Plastic product processing leftover material recovery device

Abstract

The invention relates to the technical field of plastic product processing, and particularly provides a plastic product processing leftover material recovery device. The invention discloses a plastic product processing leftover material recycling device which comprises an outer cylinder, an inner cylinder, a feeding mechanism, a crushing mechanism, an air inlet channel, an air channel blocking mechanism and a leftover material collecting mechanism. According to the invention, the air duct plugging mechanism is connected and matched with the transmission shaft on the crushing mechanism, so that intermittent plugging of the air inlet channel is realized; when the air inlet channel is opened, airflow is directly connected with the collecting box, and fully-smashed offcut is rapidly discharged. When the air inlet channel is blocked, air flow turns upwards to blow the material leaking holes, the leftover materials which are not fully crushed are pushed to make contact with the second blades for secondary crushing, the fully crushed leftover materials can enter the air inlet channel through the material leaking holes or enter the air inlet channel through an annular filter plate and a feeding pipe, and double-path rapid discharging is achieved. And retention of fully crushed offcut is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic product processing, and specifically refers to a recycling device for plastic product processing scraps. Background Art

[0002] With the popularization of the takeaway industry, the usage amount of disposable plastic lunch boxes and tableware is increasing. The production of disposable tableware usually includes steps such as raw material melting, sheet forming, tableware thermoforming, and finished product inspection. After thermoforming the sheet, the finished product is taken off, and the remaining is the edge material. Since the tableware is thermoformed from the sheet, the generated edge material is in a continuous strip shape.

[0003] Currently, when crushing the edge material, the edge material is first wound by a winding roller to make the edge material in a roll shape, and then crushed. However, after the edge material is wound, it is very thick and not easy to be crushed into smaller particles, and the entire crushing process takes a very long time, resulting in low crushing efficiency.

[0004] Chinese Patent Document CN220547056U discloses a device for crushing edge material in the production of disposable tableware. This utility model solves the problem that in the prior art, after winding and crushing the edge material, the entire edge material roll is very thick, and the crushing difficulty is large, which will affect the subsequent recycling; and through the blowing of air flow, the uncrushed and insufficiently crushed edge material is blown to the upper part of the inner cavity of the leakage cylinder again and is crushed again by the knife roller, and the edge material is fully crushed.

[0005] Although the above-mentioned edge material crushing device solves the problem of incomplete crushing to a certain extent, there are still the following problems: the air flow will blow the uncrushed and insufficiently crushed edge material to the upper part of the inner cavity of the leakage cylinder again and is crushed again by the knife roller, but it will also blow the sufficiently crushed edge material to the upper part of the inner cavity of the leakage cylinder again, and it is impossible to separate and discharge the sufficiently crushed edge material in time, which is easy to cause some edge material to be over-crushed, resulting in difficulty in balancing the crushing efficiency and quality.

[0006] In order to enable the sufficiently crushed edge material to be discharged in real time, and at the same time ensure that the insufficiently crushed edge material is intercepted and crushed twice, we propose a recycling device for plastic product processing scraps. Summary of the Invention

[0007] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a recycling device for plastic product processing scraps.

[0008] The technical solution adopted by the present invention is as follows: A recycling device for plastic product processing scraps includes an outer cylinder, an inner cylinder, a feeding mechanism, a crushing mechanism, an air inlet channel, an air duct blocking mechanism, and a side material collection mechanism. A support partition is fixedly arranged inside the outer cylinder. The inner cylinder is fixedly arranged on the support partition and penetrates through the top of the outer cylinder. The feeding mechanism is arranged inside the inner cylinder. The crushing mechanism is arranged inside the inner cylinder and is located below the feeding mechanism. The air inlet channel horizontally penetrates the outer cylinder and is in contact with the lower part of the support partition. The side material collection mechanism is communicated with one end of the air inlet channel. The air duct blocking mechanism is arranged on the air inlet channel and is located between the outer cylinder and the side material collection mechanism. Discharge ports are spaced apart on the circumferential wall of the inner cylinder. A material leakage hole is formed in the support partition. A feeding port is formed at the top of the air inlet channel, and the feeding port is communicated below the material leakage hole. The crushing mechanism includes a transmission shaft. The transmission shaft horizontally rotates through the inner cylinder and the outer cylinder through a sealed bearing. One end of the transmission shaft is connected to the air duct blocking mechanism. The crushing mechanism further includes a crushing assembly, and the crushing assembly is connected to the transmission shaft. A second blade is arranged on the transmission shaft. The second blade is located between the inner cylinder and the outer cylinder and is above the material leakage hole. A feeding pipe is connected between the outer cylinder and the air inlet channel.

[0009] Further, the crushing assembly includes a frustum of a cone and crushing rollers. The frustum of the cone is fixedly installed inside the inner cylinder. The crushing rollers are symmetrically and rotatably installed on the top of the frustum of the cone. A central shaft is fixedly connected to the axis of the crushing roller. The lower end of the central shaft rotates through the frustum of the cone and is fixedly connected to a first bevel gear. The other end of the transmission shaft is connected to a first motor. The first motor is fixedly installed on the side wall of the outer cylinder. Two groups of second bevel gears are fixedly arranged on the transmission shaft. The first bevel gear meshes with the second bevel gears. First blades are respectively fixedly arranged on the two groups of crushing rollers, and the first blades on the two groups of crushing rollers that are close to each other are alternately distributed.

[0010] Further, the edge of the frustum of the cone extends to the discharge port. The discharge port is located above the transmission shaft. An annular filter plate is fixedly embedded between the inner cylinder and the outer cylinder. The annular filter plate is located above the discharge port. Cleaning rods are respectively fixedly arranged on the two groups of crushing rollers, and the cleaning rods are in sliding contact with the top of the frustum of the cone.

[0011] Further, the air duct blocking mechanism includes a housing, a reduction gear, an incomplete gear, a driven gear, a rope winding wheel, a pulling rope, and a blocking plate. The housing is fixedly arranged on the side wall of the outer cylinder. The reduction gear is fixed inside the housing. One end of the transmission shaft rotatably penetrates into the housing and is connected to the input end of the reduction gear. The incomplete gear is fixedly arranged at the output end of the reduction gear. A rotating shaft rotatably penetrates through the inner wall on the side of the housing away from the outer cylinder through a bearing. The driven gear is fixedly arranged at one end of the rotating shaft inside the housing and is intermittently engaged with the incomplete gear. The rope winding wheel is fixedly arranged at one end of the rotating shaft outside the housing. The top end of the pulling rope is fixedly arranged on the rope winding wheel. A long slot for slidingly mating with the blocking plate is opened at the top of the air inlet channel. The blocking plate is in sliding contact with the front and rear inner walls of the air inlet channel and is in contact with the bottom wall of the air inlet channel. A baffle is fixedly arranged at the top of the blocking plate, and the bottom end of the pulling rope is fixedly connected to the baffle.

[0012] Further, the air duct blocking mechanism further includes a spring. A guide rod is fixedly arranged at the top of the baffle. The spring is slidably sleeved on the guide rod. A fixing plate is fixedly arranged on the side wall of the housing away from the outer cylinder. The top end of the guide rod slidably penetrates through the fixing plate and is located on one side of the rope winding wheel. The pulling rope movably passes through the fixing plate, and the spring abuts between the fixing plate and the baffle.

[0013] Further, the feeding mechanism includes feeding rollers. The feeding rollers are rotatably installed inside the inner cylinder. There are two groups of feeding rollers, and the two groups of feeding rollers are symmetrically arranged inside the inner cylinder. The two feeding rollers are in contact with each other. A second motor is arranged on the side wall of the inner cylinder. The output end of the second motor penetrates through the inner cylinder and is connected to one group of feeding rollers. A feeding port is opened at the top of the inner cylinder.

[0014] Further, the feeding mechanism further includes a material guiding table. The material guiding table is fixedly arranged inside the inner cylinder. The feeding rollers are located above the material guiding table. A guiding groove is opened in the middle of the upper surface of the material guiding table, and a limiting hole is opened in the middle of the lower surface of the guiding groove.

[0015] Further, the side material collecting mechanism includes a collecting box. One side of the collecting box is communicated with the air inlet channel. A filter screen is horizontally installed inside the collecting box, and the filter screen is located above the connection between the air inlet channel and the collecting box. An air outlet is arranged at the top of the collecting box, and a discharge port is arranged at the bottom of the collecting box. A sealing door is arranged at the discharge port.

[0016] Further, the connection between the feeding pipe and the outer cylinder is located above the annular filter plate, and the connection between the feeding pipe and the top of the air inlet channel is located between the blocking plate and the collecting box.

[0017] Furthermore, guide ramps are fixedly provided on the front and rear sides of the top of the support partition plate. The guide ramps are respectively attached to the outer side wall of the inner cylinder and the inner wall of the outer cylinder. The guide ramps show a downward trend from the middle to both ends. The material leakage holes are located on the left and right sides of the inner cylinder and between the two ends of the two groups of guide ramps.

[0018] The beneficial effects achieved by the present invention with the above structure are as follows:

[0019] 1. Through the connection and cooperation between the air duct blocking mechanism and the transmission shaft on the crushing mechanism, the present invention realizes the intermittent blocking of the air inlet channel. When the air inlet channel is opened, the air flow is directly connected to the collection box, and the fully crushed side materials are quickly discharged. When the air inlet channel is blocked, the air flow turns upward to blow and sweep the material leakage holes, pushing the side materials that are not fully crushed into contact with the second blade for secondary crushing. The fully crushed side materials can enter the air inlet channel through the material leakage holes, or enter the air inlet channel through the annular filter plate and the feed pipe, realizing the function of rapid discharge through dual paths and reducing the retention of fully crushed side materials.

[0020] 2. The present invention drives the transmission shaft through the first motor, simultaneously realizing the rotation of the crushing roller (through bevel gear transmission) and the intermittent movement of the air duct blocking mechanism (through a reducer + incomplete gear transmission), forming an integrated and coordinated whole, reducing the introduction of power sources, having strong linkage and synergy, reducing energy consumption and failure points, and improving the compactness and reliability of the device.

[0021] 3. The present invention guides the crushed side materials to slide towards the discharge port through the inclined surface of the conical frustum, and the cleaning rod rotates with the crushing roller to scrape off the residual side materials, ensuring the continuous conveyance of the side materials between the outer cylinder and the inner cylinder and avoiding the accumulation of side materials in the crushing area. The guide ramps on the support partition plate guide the side materials to gather towards the material leakage holes, and at the same time, in cooperation with the air flow intermittently ejected from the material leakage holes, the side materials that are not fully crushed move upward under the action of the air flow and enter the secondary crushing cycle, improving the crushing sufficiency, realizing the full-process automated continuous operation of the side materials, and avoiding the reduction in efficiency or equipment failure caused by material accumulation. Description of the Drawings

[0022] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0023] Figure 1 is the overall structural schematic diagram of the present invention;

[0024] Figure 2 is the partial cross-sectional view of the present invention;

[0025] Figure 3 is the connection structural schematic diagram of the crushing mechanism, the air inlet channel and the air duct blocking mechanism in the present invention;

[0026] Figure 4 is Figure 3 a schematic diagram of a three-dimensional structure from another perspective;

[0027] Figure 5 is a schematic diagram of the connection structure of the inner cylinder, the crushing mechanism and the feeding mechanism in the present invention;

[0028] Figure 6 is Figure 5 a schematic diagram of a three-dimensional structure from another perspective;

[0029] Figure 7 is Figure 5 a partial cross-sectional view of;

[0030] Figure 8 is a schematic diagram of the connection structure of the side material collection mechanism, the air inlet channel and the air duct blocking mechanism in the present invention;

[0031] Figure 9 is Figure 8 a partial cross-sectional view of;

[0032] Figure 10 is Figure 4 an enlarged view at position B in;

[0033] Figure 11 is Figure 2 an enlarged view at position A in.

[0034] Among them, 1. outer cylinder, 2. inner cylinder, 3. feeding mechanism, 4. crushing mechanism, 5. air inlet channel, 6. air duct blocking mechanism, 7. side material collection mechanism, 8. discharge port, 9. leakage hole, 10. feeding port, 11. feeding pipe, 12. annular filter plate, 13. support partition, 41. transmission shaft, 42. conical table, 43. crushing roller, 44. central shaft, 45. bevel gear one, 46. bevel gear two, 47. motor one, 48. blade one, 49. blade two, 410. cleaning rod, 411. material guiding ramp, 61. housing, 62. reducer, 63. incomplete gear, 64. driven gear, 65. rope winding wheel, 66. pulling rope, 67. blocking plate, 68. rotating shaft, 69. baffle, 610. spring, 611. guiding rod, 612. fixing plate, 31. feeding roller, 32. motor two, 33. feeding port, 34. material guiding table, 35. guiding groove, 36. limiting hole, 71. collection box, 72. filter screen, 73. air outlet, 74. sealing door. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0037] As Figures 1 - 7 shown, a waste plastic recycling device for plastic product processing according to the present invention includes an outer cylinder 1, an inner cylinder 2, a feeding mechanism 3, a crushing mechanism 4, an air inlet passage 5, an air duct blocking mechanism 6, and a waste material collection mechanism 7. A support partition 13 is fixedly provided inside the outer cylinder 1. The inner cylinder 2 is fixedly arranged on the support partition 13 and penetrates through the top of the outer cylinder 1. The feeding mechanism 3 is arranged inside the inner cylinder 2. The crushing mechanism 4 is arranged inside the inner cylinder 2 and is located below the feeding mechanism 3. The air inlet passage 5 horizontally penetrates the outer cylinder 1 and is in contact with the lower part of the support partition 13. The waste material collection mechanism 7 is communicated with one end of the air inlet passage 5. The air duct blocking mechanism 6 is arranged on the air inlet passage 5 and is located between the outer cylinder 1 and the waste material collection mechanism 7. Discharge ports 8 are spaced apart on the circumferential wall of the inner cylinder 2. A material leakage hole 9 is opened on the support partition 13. A feeding port 10 is opened at the top of the air inlet passage 5. The feeding port 10 is communicated below the material leakage hole 9. The crushing mechanism 4 includes a transmission shaft 41. The transmission shaft 41 horizontally rotates through the inner cylinder 2 and the outer cylinder 1 through a sealed bearing. One end of the transmission shaft 41 is connected to the air duct blocking mechanism 6. The crushing mechanism 4 further includes a crushing assembly. The crushing assembly is connected to the transmission shaft 41. A second blade 49 is provided on the transmission shaft 41. The second blade 49 is located between the inner cylinder 2 and the outer cylinder 1 and is located above the material leakage hole 9. A feeding pipe 11 is connected between the outer cylinder 1 and the air inlet passage 5.

[0038] Working principle: The trimming materials to be crushed are fed into the inner cylinder 2 through the set feeding mechanism 3. The crushing components in the inner cylinder 2 crush the trimming materials. The crushed trimming materials enter the leakage holes 9 on the supporting partition plate 13 through the discharge port 8. The trimming materials meeting the crushing requirements will pass through the leakage holes 9 and the feeding port 10 and enter the air inlet channel 5. The air flow in the air inlet channel 5 will blow the crushed trimming materials into the trimming material collection mechanism 7 for collection, enabling timely collection of the completely crushed trimming materials. The set air duct blocking mechanism 6 can block the air inlet channel 5, causing the air flow in the air inlet channel 5 to flow upward from the leakage holes 9, thereby being able to blow the trimming materials that are not sufficiently crushed above the leakage holes 9 upward. The upwardly blown trimming materials are crushed by the second blade 49, enabling the trimming materials to be sufficiently crushed. And through the feeding pipe 11, the sufficiently crushed trimming materials can be fed into the air inlet channel 5 to further timely collect the completely crushed trimming materials.

[0039] As Figures 3 - 7 shown, the crushing components include a frustum 42 and crushing rollers 43. The frustum 42 is fixedly installed inside the inner cylinder 2. The crushing rollers 43 are symmetrically and rotatably installed at the top of the frustum 42. A central shaft 44 is fixedly connected to the axis of the crushing roller 43. The lower end of the central shaft 44 rotatably penetrates the frustum 42 and is fixedly connected to a first bevel gear 45. The other end of the transmission shaft 41 is connected to a first motor 47. The first motor 47 is fixedly installed on the side wall of the outer cylinder 1. Two sets of second bevel gears 46 are fixedly provided on the transmission shaft 41. The first bevel gear 45 meshes with the second bevel gears 46. First blades 48 are respectively fixedly provided on the two crushing rollers 43, and the first blades 48 on the two crushing rollers 43 that are close to each other are alternately distributed.

[0040] As Figures 3 - 7 shown, the edge of the frustum 42 extends to the discharge port 8. The discharge port 8 is located above the transmission shaft 41. An annular filter plate 12 is fixedly embedded between the inner cylinder 2 and the outer cylinder 1. The annular filter plate 12 is located above the discharge port 8. Cleaning rods 410 are respectively fixedly provided on the two crushing rollers 43. The cleaning rods 410 are in sliding contact with the top of the frustum 42.

[0041] Working principle of the crushing component: By starting the first motor 47, the first motor 47 drives the transmission shaft 41 to rotate, and then drives the second bevel gear 46 to rotate. The second bevel gear 46 drives the first bevel gear 45 to rotate, and the first bevel gear 45 drives the central shaft 44 to rotate, and then drives the two groups of crushing rollers 43 to rotate at high speed. The first blades 48 on the crushing rollers 43 crush the edge materials; the crushed edge materials will slide down along the conical platform 42 towards the discharge port 8, and the edge materials pass through the discharge port 8 and fall into the space between the outer cylinder 1 and the inner cylinder 2. Then, the sufficiently crushed edge materials will sequentially pass through the leakage holes 9 and the feed port 10 and enter the air inlet channel 5. The cleaning rod 410 will clean and scrape off the edge materials at the top of the conical platform 42. The rotation directions of the two groups of crushing rollers 43 are opposite, and the initial positions of the cleaning rods 410 on the two groups of crushing rollers 43 point in the same direction, and there will be no movement interference when the two groups of cleaning rods 410 rotate; it should also be noted that there will be a cleaning blind area at the top of the conical platform 42 in the area covered by the rotation of the cleaning rods 410 on the two groups of crushing rollers 43. In this application, the cleaning blind area is set as an inclined downward ramp surface (not shown in the figure) to facilitate the sliding of the edge materials, which can not only make up for the cleaning blind area of the cleaning rod 410 and enable the edge materials to slide down along the ramp surface at the cleaning blind area, but also does not affect the cleaning of the cleaning rod 410.

[0042] As Figure 4 , Figure 8 , Figure 9 , Figure 10 shown, the air duct blocking mechanism 6 includes a housing 61, a speed reducer 62, an incomplete gear 63, a driven gear 64, a rope winding wheel 65, a pull rope 66 and a blocking plate 67. The housing 61 is fixedly arranged on the outer side wall of the outer cylinder 1. The speed reducer 62 is fixed in the housing 61. One end of the transmission shaft 41 rotates and penetrates into the housing 61 and is connected to the input end of the speed reducer 62. The incomplete gear 63 is fixedly arranged at the output end of the speed reducer 62. A rotating shaft 68 is rotatably penetrated through the inner wall on the side of the housing 61 away from the outer cylinder 1 through a bearing. The driven gear 64 is fixedly arranged at one end of the rotating shaft 68 located inside the housing 61 and meshes with the incomplete gear 63 intermittently. The rope winding wheel 65 is fixedly arranged at one end of the rotating shaft 68 located outside the housing 61. The top end of the pull rope 66 is fixedly arranged on the rope winding wheel 65. A long strip opening for slidingly matching with the blocking plate 67 is formed at the top of the air inlet channel 5. The blocking plate 67 is in sliding contact with the front and rear inner walls of the air inlet channel 5. The blocking plate 67 is in contact with the bottom wall of the air inlet channel 5. A baffle 69 is fixedly arranged at the top of the blocking plate 67. The bottom end of the pull rope 66 is fixedly connected to the baffle 69.

[0043] As Figure 4 , Figure 8 , Figure 9 , Figure 10As shown, the air duct plugging mechanism 6 further includes a spring 610. A guide rod 611 is fixedly provided at the top of the baffle 69. The spring 610 is slidably sleeved on the guide rod 611. A fixing plate 612 is fixedly provided on the side wall of the housing 61 away from the outer cylinder 1. The top end of the guide rod 611 slidably penetrates through the fixing plate 612 and is located on one side of the rope winding wheel 65. The pulling rope 66 movably passes through the fixing plate 612. The spring 610 abuts between the fixing plate 612 and the baffle 69.

[0044] Working principle of the air duct plugging mechanism 6: When the transmission shaft 41 rotates, the incomplete gear 63 is driven by the speed reducer 62 to rotate at a reduced speed. When the incomplete gear 63 meshes with the driven gear 64, the driven gear 64 is driven to rotate, thereby driving the rotating shaft 68 and the rope winding wheel 65 to rotate. The rope winding wheel 65 winds the pulling rope 66, thereby driving the baffle 69, the plugging plate 67 and the guide rod 611 to rise. The spring 610 is compressed. At this time, the plugging plate 67 temporarily no longer blocks the air inlet channel 5. When the incomplete gear 63 is separated from the driven gear 64, at this time, under the elastic return action of the spring 610, the baffle 69, the plugging plate 67 and the guide rod 611 are driven to move downward. At this time, the plugging plate 67 re-blocks the air inlet channel 5. Through the intermittent meshing of the incomplete gear 63 and the driven gear 64, the function of the plugging plate 67 intermittently plugging the air inlet channel 5 is realized.

[0045] As Figures 5 - 7 As shown, the feeding mechanism 3 includes a feeding roller 31. The feeding roller 31 is rotatably installed in the inner cylinder 2. There are two groups of the feeding rollers 31, and the two groups of feeding rollers 31 are symmetrically arranged in the inner cylinder 2. The two feeding rollers 31 are in contact with each other. An electric motor two 32 is arranged on the side wall of the inner cylinder 2. The output end of the electric motor two 32 penetrates through the inner cylinder 2 and is connected to one group of the feeding rollers 31. A feeding port 33 is opened at the top of the inner cylinder 2.

[0046] As Figures 5 - 7 As shown, the feeding mechanism 3 further includes a material guiding table 34. The material guiding table 34 is fixedly arranged in the inner cylinder 2. The feeding roller 31 is located above the material guiding table 34. A guiding groove 35 is opened in the middle of the upper surface of the material guiding table 34. A limiting hole 36 is opened in the middle of the lower surface of the guiding groove 35.

[0047] Working principle of the feeding mechanism 3: Through the rubber sleeve sleeved on the surface of the feeding roller 31, the two feeding rollers 31 can be in close contact, so that the relative rotation of the two feeding rollers 31 can be realized. At the same time, the edge material is pressed tightly through the rubber sleeve. Under the action of friction, the edge material is driven to move downward, and the edge material passes through the guiding groove 35 and the limiting hole 36 on the material guiding table 34 and enters the inside of the inner cylinder 2 and enters between the two groups of crushing rollers 43.

[0048] By providing a guiding groove 35 on the material guiding table 34, the side materials conveyed downward can be guided into the limiting hole 36, so that the side materials conveyed downward can be crushed by the first blade 48.

[0049] As Figures 8 - 9 shown, the side material collecting mechanism 7 includes a collecting box 71. One side of the collecting box 71 is communicated with the air inlet channel 5. A filter screen 72 is horizontally installed inside the collecting box 71, and the filter screen 72 is located above the connection between the air inlet channel 5 and the collecting box 71. The filter screen 72 is horizontally installed. An air outlet 73 is provided at the top of the collecting box 71. A discharge port is provided at the bottom of the collecting box 71. A sealing door 74 is provided at the discharge port. During the process of crushing and collecting side materials, the sealing door 74 is closed. When the crushing is completed, the sealing door 74 is opened to take out the crushed side materials in the collecting box 71.

[0050] When the blocking plate 67 does not block the air inlet channel 5, the airflow in the air inlet channel 5 drives the side materials that are sufficiently crushed into the collecting box 71; when the blocking plate 67 blocks the air inlet channel 5, at this time, the area of the air inlet channel 5 between the collecting box 71 and the outer cylinder 1 is blocked. At this time, the airflow in the air inlet channel 5 can only flow into the outer cylinder 1 through the material leakage holes 9. The airflow passing through the material leakage holes 9 will blow the side materials that are not sufficiently crushed at the material leakage holes 9 from bottom to top. The side materials blown upward come into contact with the second blade 49 for secondary crushing. After the side materials blown upward are crushed by the second blade 49, after being filtered by the annular filter plate 12, the side materials that are not sufficiently crushed are blocked by the annular filter plate 12, while the side materials that are sufficiently crushed enter the air inlet channel 5 through the feed pipe 11, and then enter the collecting box 71; by intermittently blocking the air inlet channel 5 with the blocking plate 67, the side materials that are sufficiently crushed can enter the air inlet channel 5 through the material leakage holes 9 and can also enter the air inlet channel 5 through the annular filter plate 12 and the feed pipe 11, so that the side materials that are sufficiently crushed can enter the collecting box 71 as soon as possible, reducing the crushing time of the side materials, avoiding over-crushing of some side materials, which will affect the subsequent recycling and cause excessive dust generation during production; the size specifications of the material leakage holes 9 are the same as those of the filter holes on the annular filter plate 12, and only the side materials that are sufficiently crushed can pass through.

[0051] As Figures 1 - 2 shown, the connection between the feed pipe 11 and the outer cylinder 1 is located above the annular filter plate 12, and the connection between the feed pipe 11 and the top of the air inlet channel 5 is located between the blocking plate 67 and the collecting box 71, which can ensure that the side materials blown upward can be blocked and filtered by the annular filter plate 12, and the side materials passing through the annular filter plate 12 can enter the air inlet channel 5 along the feed pipe 11 and finally enter the collecting box 71.

[0052] As Figures 5 - 7As shown in the figure, guide ramps 411 are fixedly provided on the front and rear sides of the top of the support partition 13. The guide ramps 411 are respectively in contact with the outer side wall of the inner cylinder 2 and the inner wall of the outer cylinder 1. The guide ramps 411 show a downward trend from the middle to both ends. The material leakage holes 9 are located on the left and right sides of the inner cylinder 2 and between the two ends of the two groups of guide ramps 411. By providing the guide ramps 411, the side materials sliding down from the discharge port 8 can be guided to the material leakage holes 9, facilitating the discharge of the side materials from the material leakage holes 9. At the same time, it is also convenient for the airflow ejected from the material leakage holes 9 to blow the side materials that are not completely pulverized upward for secondary pulverization.

[0053] During specific use, when pulverizing and recycling the processing side materials of plastic products, the end of the coiled side materials is placed between the two feeding rollers 3 through the feeding port 33, and the second motor 32 is started. The second motor 32 drives one group of feeding rollers 31 to rotate. Through the rubber sleeves sleeved on the surfaces of the feeding rollers 31, the two feeding rollers 31 can be in close contact, thereby realizing the relative rotation of the two feeding rollers 31. And the side materials are pressed tightly through the rubber sleeves. At the same time, under the action of friction, the side materials are driven to move downward, and the side materials pass through the guiding grooves 35 and limiting holes 36 on the guiding table 34 and enter the interior of the inner cylinder 2 and between the two groups of pulverizing rollers 43.

[0054] At the same time, the first motor 47 is started. The first motor 47 drives the transmission shaft 41 to rotate, thereby driving the second bevel gear 46 to rotate. The second bevel gear 46 drives the first bevel gear 45 to rotate. The first bevel gear 45 drives the central shaft 44 to rotate, thereby driving the two groups of pulverizing rollers 43 to rotate at high speed. The blades 48 on the pulverizing rollers 43 pulverize the side materials.

[0055] The pulverized side materials will slide down along the conical platform 42 towards the discharge port 8, and the cleaning rod 410 will clean and scrape off the side materials on the top of the conical platform 42. The side materials pass through the discharge port 8 and fall into the space between the outer cylinder 1 and the inner cylinder 2, and then slide towards the material leakage holes 9 through the guide ramps 411. The side materials that are not sufficiently pulverized and those that are not pulverized in time will be intercepted above the material leakage holes 9. The side materials that are sufficiently pulverized will successively pass through the material leakage holes 9 and the feeding port 10 and enter the air inlet channel 5.

[0056] At the same time, the air inlet channel 5 is connected to a blower. The blower conveys gas into the air inlet channel 5. The gas flows from the right end to the left end of the air inlet channel 5 and drives the side materials that are sufficiently pulverized into the collection box 71. After the gas is filtered by the filter screen 72 in the collection box 71, it is discharged from the air outlet 73, while the side materials remain at the bottom of the collection box 71.

[0057] Meanwhile, when the transmission shaft 41 rotates, it also drives the incomplete gear 63 to rotate at a reduced speed through the speed reducer 62. When the incomplete gear 63 meshes with the driven gear 64, it drives the driven gear 64 to rotate, and then drives the rotating shaft 68 and the rope winding wheel 65 to rotate. The rope winding wheel 65 winds the pulling rope 66, thereby driving the baffle 69, the plugging plate 67 and the guide rod 611 to rise, and the spring 610 is compressed. At this time, the plugging plate 67 temporarily no longer blocks the air inlet passage 5; when the incomplete gear 63 is separated from the driven gear 64, at this time, under the rebounding action of the spring 610, it drives the baffle 69, the plugging plate 67 and the guide rod 611 to move downward. At this time, the plugging plate 67 re-blocks the air inlet passage 5. Through the intermittent meshing of the complete gear and the driven gear 64, the function of the plugging plate 67 intermittently blocking the air inlet passage 5 is realized;

[0058] When the plugging plate 67 does not block the air inlet passage 5, the airflow in the air inlet passage 5 drives the fully pulverized side materials into the collection box 71; when the plugging plate 67 blocks the air inlet passage 5, at this time, the area of the air inlet passage 5 between the collection box 71 and the outer cylinder 1 is blocked, and the airflow in the air inlet passage 5 can only flow into the outer cylinder 1 through the material leakage holes 9. The airflow passing through the material leakage holes 9 will blow the side materials that are not fully pulverized at the material leakage holes 9 from bottom to top. The side materials blown upward contact the second blade 49 for secondary pulverization. After the side materials blown upward are pulverized by the second blade 49, after passing through the filtration of the annular filter plate 12, the side materials that are not fully pulverized are blocked by the annular filter plate 12, while the fully pulverized side materials enter the air inlet passage 5 through the feed pipe 11, and then enter the collection box 71; by intermittently blocking the air inlet passage 5 with the plugging plate 67, the fully pulverized side materials can not only enter the air inlet passage 5 through the material leakage holes 9, but also enter the air inlet passage 5 through the annular filter plate 12 and the feed pipe 11, so that the fully pulverized side materials can enter the collection box 71 as soon as possible, reducing the pulverization time of the side materials, avoiding excessive pulverization of some side materials, affecting subsequent recycling and causing excessive dust generation during production.

[0059] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0060] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced by the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0061] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for recycling plastic processing scraps, characterized in that: It includes an outer cylinder (1), an inner cylinder (2), a feeding mechanism (3), a crushing mechanism (4), an air inlet channel (5), an air duct blocking mechanism (6) and a side material collection mechanism (7). A support partition plate (13) is fixedly arranged inside the outer cylinder (1). The inner cylinder (2) is fixed on the support partition plate (13) and penetrates through the top of the outer cylinder (1). The feeding mechanism (3) is arranged inside the inner cylinder (2). The crushing mechanism (4) is arranged inside the inner cylinder (2) and is located below the feeding mechanism (3). The air inlet channel (5) horizontally penetrates the outer cylinder (1) and is attached to the lower part of the support partition plate (13). The side material collection mechanism (7) is communicated with one end of the air inlet channel (5). The air duct blocking mechanism (6) is arranged on the air inlet channel (5) and is located between the outer cylinder (1) and the side material collection mechanism (7). Discharge ports (8) are spaced apart on the circumferential wall of the inner cylinder (2). A material leakage hole (9) is formed in the support partition plate (13). A feeding port (10) is formed at the top of the air inlet channel (5), and the feeding port (10) is communicated below the material leakage hole (9). The crushing mechanism (4) includes a transmission shaft (41). The transmission shaft (41) horizontally rotates through the inner cylinder (2) and the outer cylinder (1) through a sealed bearing. One end of the transmission shaft (41) is connected to the air duct blocking mechanism (6). The crushing mechanism (4) further includes a crushing assembly, and the crushing assembly is connected to the transmission shaft (41); a second blade (49) is arranged on the transmission shaft (41). The second blade (49) is located between the inner cylinder (2) and the outer cylinder (1) and is located above the material leakage hole (9); A feeding pipe (11) is connected between the outer cylinder (1) and the air inlet channel (5).

2. The recycling device for plastic product processing scraps according to claim 1, characterized in that: The crushing assembly includes a conical frustum (42) and crushing rollers (43). The conical frustum (42) is fixedly installed inside the inner cylinder (2). The crushing rollers (43) are symmetrically and rotatably installed on the top of the conical frustum (42). A central shaft (44) is fixedly connected to the axis of the crushing roller (43). The lower end of the central shaft (44) rotates through the conical frustum (42) and is fixedly connected to a first bevel gear (45). The other end of the transmission shaft (41) is connected to a first motor (47). The first motor (47) is fixedly installed on the outer side wall of the outer cylinder (1). Two groups of second bevel gears (46) are fixedly arranged on the transmission shaft (41). The first bevel gear (45) meshes with the second bevel gears (46); First blades (48) are respectively fixedly arranged on the two groups of crushing rollers (43), and the first blades (48) on the two groups of crushing rollers (43) that are close to each other are alternately distributed.

3. The recycling device for plastic product processing scraps according to claim 2, characterized in that: The edge of the conical frustum (42) extends to the discharge port (8). The discharge port (8) is located above the transmission shaft (41). An annular filter plate (12) is fixedly embedded between the inner cylinder (2) and the outer cylinder (1). The annular filter plate (12) is located above the discharge port (8); Cleaning rods (410) are respectively fixedly arranged on the two groups of crushing rollers (43), and the cleaning rods (410) are in sliding contact with the top of the conical frustum (42).

4. A plastic product processing scrap recycling device according to claim 3, characterized in that: The air duct blocking mechanism (6) includes a housing (61), a reduction gear (62), an incomplete gear (63), a driven gear (64), a rope winding wheel (65), a pulling rope (66) and a blocking plate (67). The housing (61) is fixedly arranged on the side wall of the outer cylinder (1). The reduction gear (62) is fixed inside the housing (61). One end of the transmission shaft (41) rotatably penetrates into the housing (61) and is connected to the input end of the reduction gear (62). The incomplete gear (63) is fixedly arranged at the output end of the reduction gear (62). A rotating shaft (68) is rotatably penetrated through the inner wall of one side of the housing (61) away from the outer cylinder (1) by means of a bearing. The driven gear (64) is fixedly arranged at one end of the rotating shaft (68) located inside the housing (61) and is intermittently engaged with the incomplete gear (63). The rope winding wheel (65) is fixedly arranged at one end of the rotating shaft (68) located outside the housing (61). The top end of the pulling rope (66) is fixedly arranged on the rope winding wheel (65). A long slot for sliding cooperation with the blocking plate (67) is opened at the top of the air inlet channel (5). The blocking plate (67) is in sliding contact with the front and rear inner walls of the air inlet channel (5). The blocking plate (67) is in contact with the bottom wall of the air inlet channel (5). A baffle (69) is fixedly arranged at the top of the blocking plate (67). The bottom end of the pulling rope (66) is fixedly connected to the baffle (69).

5. The recycling device for plastic product processing scraps according to claim 4, characterized in that: The air duct blocking mechanism (6) further includes a spring (610). A guide rod (611) is fixedly arranged at the top of the baffle (69). The spring (610) is slidably sleeved on the guide rod (611). A fixing plate (612) is fixedly arranged on the side wall of the housing (61) away from the outer cylinder (1). The top end of the guide rod (611) slidably penetrates through the fixing plate (612) and is located on one side of the rope winding wheel (65). The pulling rope (66) movably passes through the fixing plate (612). The spring (610) abuts between the fixing plate (612) and the baffle (69).

6. The recycling device for plastic product processing scraps according to claim 5, characterized in that: The feeding mechanism (3) includes a feeding roller (31). The feeding roller (31) is rotatably installed inside the inner cylinder (2). There are two groups of the feeding rollers (31), and the two groups of feeding rollers (31) are symmetrically arranged inside the inner cylinder (2). The two feeding rollers (31) are in contact with each other. A motor two (32) is arranged on the side wall of the inner cylinder (2). The output end of the motor two (32) penetrates through the inner cylinder (2) and is connected to one group of the feeding rollers (31). A feeding port (33) is opened at the top of the inner cylinder (2).

7. An apparatus for recycling plastic processing scraps according to claim 6, wherein: The feeding mechanism (3) further includes a material guiding table (34). The material guiding table (34) is fixedly arranged inside the inner cylinder (2). The feeding roller (31) is located above the material guiding table (34). A guiding groove (35) is opened in the middle of the upper surface of the material guiding table (34). A limiting hole (36) is opened in the middle of the lower surface of the guiding groove (35).

8. A plastic product processing waste recycling device according to any one of claims 1-7, characterized in that: The edge material collection mechanism (7) includes a collection box (71). One side of the collection box (71) is communicated with the air inlet channel (5). A filter screen (72) is horizontally installed inside the collection box (71), and the filter screen (72) is located above the connection between the air inlet channel (5) and the collection box (71). An air outlet (73) is provided at the top of the collection box (71), and a discharge port is provided at the bottom of the collection box (71). A sealing door (74) is provided at the discharge port.

9. The recycling device for plastic product processing scraps according to claim 8, wherein: The connection between the feed pipe (11) and the outer cylinder (1) is located above the annular filter plate (12), and the connection between the feed pipe (11) and the top of the air inlet channel (5) is located between the plugging plate (67) and the collection box (71).

10. A waste recycling device for plastic product processing according to claim 7, characterized in that: Guide material ramps (411) are respectively fixedly provided on the front and rear sides of the top of the support partition plate (13). The guide material ramps (411) are respectively in contact with the outer side wall of the inner cylinder (2) and the inner wall of the outer cylinder (1). The guide material ramps (411) show a downward trend from the middle to both ends. The material leakage holes (9) are located on the left and right sides of the inner cylinder (2) and between the two ends of the two groups of guide material ramps (411).

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