Recycled plastic granule manufacturing device

Abstract

The present invention belongs to the technical field of granulators, and specifically relates to a device for manufacturing recycled plastic particles, comprising a frame and a hot melt component, wherein the hot melt component is arranged at the top of the frame, an extrusion component is arranged at the bottom of the frame, the hot melt component and the extrusion component are connected by a connecting cylinder, a pelletizing component is arranged at one end of the extrusion component, the pelletizing component comprises a shell fixedly connected to one end of the extrusion component, a driver is arranged inside the shell, the side wall of the driver is rotatably connected to the pelletizing components equidistantly distributed around the axis of the extrusion component, and the end of the extrusion component is fixedly connected to a drive shaft for driving the driver to rotate. In the present invention, the recycled plastic is first preliminarily heated by the hot melt component, and then melted again by the extrusion component and extruded. The hot melt component and the extrusion component adopt an upper and lower layered design, which can reduce the length of the second heating cylinder, thereby saving the space occupied by the device in the horizontal direction.

Description

Technical Field

[0001] The invention belongs to the technical field of granulators, and in particular relates to a device for manufacturing recycled plastic particles. Background Art

[0002] Recycled plastic refers to plastic raw materials obtained by recycling, processing and reusing waste plastic products. The production process of this material usually includes steps such as collecting waste plastics, sorting, cleaning, crushing, melting and molding. Recycled plastics can be used to manufacture various new plastic products, thereby reducing dependence on fossil fuels, reducing greenhouse gas emissions, and reducing landfill volume. When recycled plastics are recycled, they need to be granulated for easy storage and use. A granulator is required for granulating recycled plastics.

[0003] The commonly used granulator has an integrated extruder barrel. Crushed recycled plastic is added to the barrel, and the screw in the barrel drives the plastic forward. To ensure that the plastic is fully heated, the extruder barrel needs to have a certain length. The integrated extruder barrel is long, occupies more plant area, and requires a high-torque motor to drive the extruder barrel. In addition, the pelletizing structure of the existing granulator generally drives the cutter to work by installing a motor at the tail of the machine body. This drive method requires additional drive components, which increases manufacturing costs and energy consumption. Summary of the Invention

[0004] The object of the present invention is to provide a device for producing recycled plastic particles, which can improve the working efficiency of power elements and save electric energy, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for manufacturing recycled plastic particles, comprising a frame and a hot melt assembly, wherein the hot melt assembly is arranged on the top of the frame, an extrusion assembly is arranged on the bottom of the frame, the hot melt assembly and the extrusion assembly are connected by a connecting tube, and a pelletizing device is arranged at one end of the extrusion assembly;

[0006] The pelletizing device includes a shell cover fixedly connected to one end of the extrusion component, a driver is provided inside the shell cover, the side wall of the driver is rotatably connected to the pelletizing components equidistantly distributed around the axis of the extrusion component, and the end of the extrusion component is fixedly connected to a drive shaft for driving the driver to rotate, and the drive shaft passes through the driver.

[0007] Furthermore, the rack includes an upper rack and a lower rack correspondingly distributed up and down, and support columns distributed in a rectangular array are fixedly connected between the lower rack and the upper rack.

[0008] Furthermore, the hot melt assembly includes a first heating cylinder fixedly installed on the top of the upper frame, the first heating cylinder is internally rotatably connected to a first spiral rod, one end of the top of the first heating cylinder is fixedly connected to a feed hopper, the top of the upper frame is fixedly connected to a first coupling, a first reduction gearbox and a first motor, one end of the first spiral rod is fixedly connected to one end of the first reduction gearbox through a first coupling, the output shaft of the first motor and the input shaft of the first reduction gearbox are both fixedly sleeved with a first pulley, and the two first pulleys are connected by a belt drive.

[0009] Furthermore, the extrusion assembly includes a second heating tube fixedly connected to the top of the bottom frame, the second heating tube and the first heating tube are connected through a connecting tube, the interior of the second heating tube is rotatably connected to a second screw rod, one end of the interior of the second heating tube is installed with an extrusion mold, one end of the second screw rod passes through the middle of the extrusion mold, the top of the bottom frame is fixedly connected to a second coupling, a second reduction gear box and a second motor, the other end of the second screw rod is fixedly connected to the second reduction gear box through a second coupling, the output shaft of the second motor and the input end of the second reduction gear box are fixedly sleeved with a second pulley, and the two second pulleys are connected by belt transmission.

[0010] Furthermore, one end of the shell cover is provided with observation grooves equidistantly distributed around the axis of the shell cover, and the bottom of the shell cover side wall is provided with a leakage groove.

[0011] Furthermore, the drive shaft is a hollow structure, and the side wall of the drive shaft is provided with equally distributed sliding grooves. The interior of the drive shaft is rotatably connected to a screw rod, and one end of the screw rod is fixedly connected to a hexagonal head.

[0012] Furthermore, the driver includes a center gear and an internal gear, the drive shaft passes through the center gear, a center hole is provided in the middle of the center gear, a threaded barrel is provided inside the center hole, the threaded barrel is connected to the screw rod thread transmission, the side wall of the threaded barrel is fixedly connected with equidistantly distributed slides, several of the slides are respectively slidably connected inside several of the slide grooves, symmetrically distributed transmission gears are provided between the center gear and the internal gear, the center gear is connected to the internal gear through the two transmission gears, and the transmission gear is rotatably connected to one end of the shell cover through a rotating shaft.

[0013] Furthermore, the middle part of the extrusion die is rotatably connected to the base cylinder, the drive shaft is rotatably connected to the base cylinder through a bearing, one end of the base cylinder is fixedly connected to a disc, and connecting rods distributed evenly are fixedly connected between the internal gear and the base cylinder. One end of the disc is fixedly connected to protrusions distributed evenly, and the surface of the center gear is provided with a groove that matches the protrusion.

[0014] Furthermore, an annular groove is provided on the edge of one end of the disc, and evenly distributed through holes are provided at one end of the annular groove. A diverter is provided inside the annular groove, and the diverter includes a circular ring, and one end of the circular ring is fixedly connected to evenly distributed ejectors. Several of the ejectors respectively pass through several of the through holes, and a spring is fixedly connected inside the through hole. The spring is sleeved on the side wall of the corresponding ejector, and one end of the spring is fixedly connected to the side wall of the ejector.

[0015] Furthermore, the pelletizing assembly includes a pelletizing knife, one end of which is fixedly connected to a shaft and a swivel, the shaft and the swivel are concentrically arranged, the side wall of the base cylinder is provided with a mounting groove corresponding to the shaft, the periphery of the mounting groove is provided with an annular groove, the swivel is rotatably connected to the inside of the annular groove, the shaft is rotatably connected to the inside of the mounting groove through a bearing, the side wall of the shaft is sleeved with a torsion spring, one end of the torsion spring is fixedly connected to the side wall of the shaft, and the other end of the torsion spring is fixedly connected to the side wall of the mounting groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the recycled plastic is first preliminarily heated by the hot melt component, and then melted again by the extrusion component and extruded. The hot melt component and the extrusion component adopt an upper and lower layered design, which can reduce the length of the second heating cylinder, thereby saving the space occupied by the device in the horizontal direction; the second screw drives the drive shaft to rotate while extruding the plastic, thereby driving the driver to rotate. After the driver rotates, it drives the pelletizing component on the side wall of the driver to rotate, and pelletizes the extruded plastic. The use of power parts can be reduced during production. When in use, it is driven by a power system, which can improve the working efficiency of the power elements and save electricity; during operation, the position of the center gear can be adjusted to produce plastic particles of different specifications, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a front view of the present invention;

[0019] Figure 3 It is a front cross-sectional view of the present invention;

[0020] Figure 4 An exploded view of the pelletizing device of the present invention;

[0021] Figure 5 Exploded view of the driver of the present invention.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Frame; 11. Bottom frame; 12. Upper frame; 13. Support column; 2. Hot melt assembly; 21. First heating cylinder; 22. Feed hopper; 23. First screw; 24. First coupling; 25. First reduction gearbox; 26. First motor; 27. First pulley; 3. Extrusion assembly; 31. Second heating cylinder; 32. Second screw; 33. Extrusion die; 34. Second coupling; 35. Second reduction gearbox; 36. Second pulley; 37. Second motor; 4. Connecting cylinder; 5. Pelletizing device; 6. Housing; 61. Observation trough; 62. Drain trough; 7. Driver; 71. Center gear; 711. Slot; 712. Center hole; 713. Threaded barrel; 714. Slide; 72. Internal gear; 73. Transmission gear; 74. Base barrel; 741. Mounting slot; 742. Annular groove; 75. Disc; 751. Annular groove; 752. Through hole; 76. Connecting rod; 77. Protrusion; 78. Diverter; 781. Ring; 782. Ejector pin; 783. Spring; 8. Pelletizing assembly; 81. Pelletizing knife; 82. Shaft; 83. Swivel; 84. Torsion spring; 9. Drive shaft; 91. Screw; 92. Hexagon socket; 93. Slide. DETAILED DESCRIPTION

[0024] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0025] like Figure 1 and 4 As shown, a recycled plastic particle manufacturing device includes a frame 1 and a hot melt component 2, the hot melt component 2 is arranged on the top of the frame 1, and an extrusion component 3 is arranged at the bottom of the frame 1. The hot melt component 2 and the extrusion component 3 are connected through a connecting tube 4. A pelletizing device 5 is provided at one end of the extrusion component 3, and the pelletizing device 5 includes a shell cover 6 fixedly connected to one end of the extrusion component 3. A driver 7 is provided inside the shell cover 6. The side wall of the driver 7 is rotatably connected to the pelletizing components 8 equidistantly distributed around the axis of the extrusion component 3. The end of the extrusion component 3 is fixedly connected to a drive shaft 9 for driving the driver 7 to rotate, and the drive shaft 9 passes through the driver 7.

[0026] According to the above structure, when in use, the crushed recycled plastic is put into the interior of the hot melt component 2, and the recycled plastic is first melted by the preliminary heating of the hot melt component 2. The preliminarily melted plastic is put into the interior of the extrusion component 3 through the connecting tube 4, and then melted again by the extrusion component 3 and extruded. The extrusion component 3 drives the drive shaft 9 to rotate while extruding the plastic, thereby driving the driver 7 to rotate. After the driver 7 rotates, it drives the pelletizing component 8 on the side wall of the driver 7 to rotate to pelletize the extruded plastic. The driver 7 is driven by the extrusion component 3, which can reduce the use of power parts during production. When in use, it is driven by a power system, which can improve the working efficiency of the power components and save electricity.

[0027] like Figure 2 and 3 As shown, the frame 1 includes an upper frame 12 and a bottom frame 11 correspondingly distributed in the upper and lower parts, and support columns 13 distributed in a rectangular array are fixedly connected between the bottom frame 11 and the upper frame 12. The hot melt assembly 2 includes a first heating cylinder 21 fixedly installed on the top of the upper frame 12, and the first heating cylinder 21 is internally rotatably connected to a first screw rod 23. One end of the top of the first heating cylinder 21 is fixedly connected to a feed hopper 22. The top of the upper frame 12 is fixedly connected to a first coupling 24, a first reduction box 25 and a first motor 26. One end of the first screw rod 23 is fixedly connected to one end of the first reduction box 25 through the first coupling 24. The output shaft of the first motor 26 and the input shaft of the first reduction box 25 are fixedly sleeved with a first pulley 27. There is a first pulley 27 between the two first pulleys 27. Through belt transmission connection, the extrusion assembly 3 includes a second heating tube 31 fixedly connected to the top of the bottom frame 11, the second heating tube 31 and the first heating tube 21 are connected through the connecting tube 4, the second heating tube 31 is internally rotatably connected to the second screw rod 32, one end of the second heating tube 31 is installed with an extrusion mold 33, one end of the second screw rod 32 passes through the middle of the extrusion mold 33, the top of the bottom frame 11 is fixedly connected with a second coupling 34, a second reduction box 35 and a second motor 37, the other end of the second screw rod 32 is fixedly connected to the second reduction box 35 through the second coupling 34, the output shaft of the second motor 37 and the input end of the second reduction box 35 are fixedly sleeved with a second pulley 36, and the two second pulleys 36 are connected through belt transmission.

[0028] According to the above structure, when in use, the crushed recycled plastic is fed into the interior of the first heating cylinder 21 through the feed hopper 22, and driven by the first motor 26, the first screw rod 23 rotates to drive the plastic forward. After the first heating cylinder 21 works, it heats the plastic to melt it. The plastic that has been initially heated and melted by the first heating cylinder 21 enters the end of the second heating cylinder 31 through the connecting cylinder 4. Driven by the second motor 37, the second screw rod 32 rotates to drive the plastic forward. When the plastic moves to the extrusion mold 33, the plastic is extruded along the through holes on the surface of the extrusion mold 33. This device adopts an upper and lower layered design, which can reduce the length of the second heating cylinder 31, thereby saving the space occupied by the device in the horizontal direction.

[0029] like Figure 4 As shown, one end of the shell cover 6 is provided with observation grooves 61 equidistantly distributed around the axis of the shell cover 6 , and the bottom of the side wall of the shell cover 6 is provided with a leakage groove 62 .

[0030] According to the above structure, after being pelletized, the extruded plastic falls along the trough 62 into the matching cooling device for cooling.

[0031] like Figure 4 and 5 As shown, the drive shaft 9 is a hollow structure, and the side wall of the drive shaft 9 is provided with equidistantly distributed slide grooves 93, the internal rotation of the drive shaft 9 is connected to the screw rod 91, and one end of the screw rod 91 is fixedly connected to the inner hexagonal head 92, the driver 7 includes a central gear 71 and an internal gear 72, the drive shaft 9 passes through the central gear 71, and the middle part of the central gear 71 is provided with a central hole 712, and the interior of the central hole 712 is provided with a threaded barrel 713, the threaded barrel 713 is threadedly connected to the screw rod 91, and the side wall of the threaded barrel 713 is fixedly connected with equidistantly distributed slides 714, and a plurality of slides 714 are respectively slidably connected to the interior of a plurality of slide grooves 93, and the central A symmetrically distributed transmission gear 73 is provided between the gear 71 and the internal gear 72. The center gear 71 is connected to the internal gear 72 through two transmission gears 73. The transmission gear 73 is rotatably connected to one end of the shell cover 6 through a rotating shaft. The middle part of the extrusion mold 33 is rotatably connected to the base cylinder 74. The drive shaft 9 is rotatably connected to the base cylinder 74 through a bearing. One end of the base cylinder 74 is fixedly connected to a disc 75. An equidistantly distributed connecting rod 76 is fixedly connected between the internal gear 72 and the base cylinder 74. One end of the disc 75 is fixedly connected to an equidistantly distributed protrusion 77. The surface of the center gear 71 is provided with a card groove 711 that matches the protrusion 77.

[0032] According to the above structure, the second screw rod 32 drives the driving shaft 9 to rotate synchronously after rotating. After the driving shaft 9 rotates, the central gear 71 is driven to rotate through the transmission of the slide 714. The transmission central gear 71 through the transmission gear 73 drives the internal gear 72 to rotate. After the transmission of the connecting rod 76, the base cylinder 74 rotates with the internal gear 72, and the pelletizing assembly 8 on the base cylinder 74 rotates with the base cylinder 74 to pelletize the extruded plastic strips. At this time, the rotation direction of the internal gear 72 and the base cylinder 74 is opposite to the rotation direction of the driving shaft 9, and the rotation speed is less than the rotation speed of the driving shaft 9. In this state, the size of the pellet is L1. When the size of the pellet needs to be adjusted, the hexagonal head 92 is rotated by the hexagonal screwdriver to drive the screw rod 91 to rotate. After the screw rod 91 rotates, the threaded cylinder is driven 713 moves along the axial direction of the screw rod 91, thereby driving the center gear 71 to move. When the center gear 71 moves to the side close to the disc 75, the protrusion 77 can be inserted into the corresponding slot 711. During the insertion process, the docking can be observed through the observation slot 61. If there is a deviation between the slot 711 and the protrusion 77, the internal gear 72 can be rotated through the leakage slot 62 to change the position of the protrusion 77 so that it can be plugged into the slot 711. When the slot 711 is matched with the protrusion 77, the center gear 71 rotates, directly driving the disc 75 and the base cylinder 74 to rotate. At this time, the rotation speed and rotation direction of the disc 75 and the base cylinder 74 are the same as the drive shaft 9. In this state, the size of the pellet is L2, and L2 is smaller than L1, thereby playing a role in adjusting the pellet size.

[0033] like Figure 4 and 5 As shown, an annular groove 751 is provided at one end of the disc 75, and through holes 752 are evenly distributed at one end of the annular groove 751. A diverter 78 is provided inside the annular groove 751. The diverter 78 includes a ring 781. One end of the ring 781 is fixedly connected to equidistantly distributed ejector pins 782. Several ejector pins 782 pass through several through holes 752 respectively. A spring 783 is fixedly connected inside the through hole 752. The spring 783 is sleeved on the side wall of the corresponding ejector pin 782. One end of the spring 783 is fixedly connected to the side wall of the ejector pin 782. The pelletizing assembly 8 includes The pelletizer 81 has one end fixedly connected to a shaft 82 and a swivel 83, the shaft 82 and the swivel 83 are concentrically arranged, the side wall of the base cylinder 74 is provided with a mounting groove 741 corresponding to the shaft 82, the periphery of the mounting groove 741 is provided with an annular groove 742, the swivel 83 is rotatably connected to the inside of the annular groove 742, the shaft 82 is rotatably connected to the inside of the mounting groove 741 through a bearing, and a torsion spring 84 is sleeved on the side wall of the shaft 82, one end of the torsion spring 84 is fixedly connected to the side wall of the shaft 82, and the other end of the torsion spring 84 is fixedly connected to the side wall of the mounting groove 741.

[0034] According to the above structure, after the slot 711 is engaged with the protrusion 77, the central gear 71 directly drives the base cylinder 74 and the disc 75 to rotate. At this time, the rotation direction of the base cylinder 74 and the disc 75 is the same as the rotation direction of the drive shaft 9. At this time, the rotation direction of the pelletizing assembly 8 on the side wall of the base cylinder 74 is opposite to the rotation direction when the central gear 71 drives the internal gear 72 to rotate through the transmission gear 73. If the inclination direction of the pelletizing knife 81 is not changed, the angle between the blade of the pelletizing knife 81 and the plastic strip is too small, which will cause pelletizing failure. When the central gear 71 approaches the disc 75, one side of the central gear 71 The ring 781 is squeezed, so that one end of the ejector pin 782 extends. As the center gear 71 continues to move, the ejector pin 782 continues to extend and presses against the other side of the pelletizer 81, thereby driving the pelletizer 81 to rotate around the axis of the shaft 82, so that the other side of the pelletizer 81 contacts one side of the extrusion die 33, so that the pelletizer 81 can cut pellets normally. When the center gear 71 moves away from the disk 75, the ring 781 and the ejector pin 782 move away from the pelletizer 81 under the push of the spring 783. As the ejector pin 782 moves away, the pelletizer 81 rotates in the opposite direction and automatically resets under the torsion force of the torsion spring 84.

[0035] The working principle of the present invention is as follows: when in use, the crushed recycled plastic is fed into the interior of the first heating cylinder 21 through the feed hopper 22, and driven by the first motor 26, the first screw rod 23 rotates and drives the plastic to move forward. After the first heating cylinder 21 works, it heats the plastic to melt it. The plastic that has been preliminarily heated and melted by the first heating cylinder 21 enters the end of the second heating cylinder 31 through the connecting cylinder 4. Driven by the second motor 37, the second screw rod 32 rotates and drives the plastic to move forward. When the plastic moves to the extrusion die 33, the plastic is extruded along the through holes on the surface of the extrusion die 33. The device adopts an upper and lower layered design, which can reduce the length of the second heating cylinder 31, thereby saving the space occupied by the device in the horizontal direction. After the plastic is pelletized, it falls along the leakage groove 62 into the matching cooling device for cooling. After the second screw 32 rotates, it drives the drive shaft 9 to rotate synchronously. After the drive shaft 9 rotates, it drives the central gear 71 to rotate through the transmission of the slide 714. The transmission central gear 71 of the transmission gear 73 drives the internal gear 72 to rotate. After the transmission of the connecting rod 76, the base cylinder 74 rotates with the internal gear 72. The pelletizing assembly 8 on the base cylinder 74 rotates with the base cylinder 74 to pelletize the extruded plastic strips. At this time, the rotation direction of the internal gear 72 and the base cylinder 74 is opposite to the rotation direction of the drive shaft 9, and the rotation speed is less than the rotation speed of the drive shaft 9. In this state, the size of the pellet is L1. When the size of the pellet needs to be adjusted, the six The angle screwdriver rotates the hexagonal head 92, thereby driving the screw rod 91 to rotate. After the screw rod 91 rotates, the threaded cylinder 713 is driven to move along the axial direction of the screw rod 91, thereby driving the central gear 71 to move. When the central gear 71 moves to one side close to the disc 75, the protrusion 77 can be inserted into the corresponding slot 711. During the insertion process, the docking can be observed through the observation groove 61. If there is a deviation between the slot 711 and the protrusion 77, the internal gear 72 can be rotated through the leakage groove 62 to change the position of the protrusion 77, so that it can be plugged into the slot 711. When the slot 711 is engaged with the protrusion 77, the central gear 71 rotates, directly driving the disc 75 and the base cylinder 74 to rotate. At this time, the rotation speed of the disc 75 and the base cylinder 74 is The degree and rotation direction are the same as those of the drive shaft 9. In this state, the size of the pelletizer is L2, which is smaller than L1, thereby playing the role of adjusting the pelletizer size. After the slot 711 cooperates with the protrusion 77, the central gear 71 directly drives the base cylinder 74 and the disc 75 to rotate. At this time, the rotation direction of the base cylinder 74 and the disc 75 is the same as the rotation direction of the drive shaft 9. At this time, the rotation direction of the pelletizer assembly 8 on the side wall of the base cylinder 74 is opposite to the rotation direction when the central gear 71 drives the internal gear 72 to rotate through the transmission gear 73. If the inclination direction of the pelletizer 81 is not changed, the angle between the blade of the pelletizer 81 and the plastic strip is too small, which will cause pelletizing failure. When the central gear 71 approaches the disc 75, one side of the central gear 71 squeezes the ring 781,As a result, one end of the ejector pin 782 extends and, as the central gear 71 continues to move, the ejector pin 782 continues to extend and press against the other side of the pelletizer 81, thereby driving the pelletizer 81 to rotate about the axis of the shaft 82, causing the other side of the pelletizer 81 to contact one side of the extrusion die 33, so that the pelletizer 81 can cut pellets normally. When the central gear 71 moves away from the disk 75, the spring 783 pushes the ring 781 and the ejector pin 782 away from the pelletizer 81. As the ejector pin 782 moves away, the pelletizer 81 automatically returns to its original position due to the torsion force of the torsion spring 84.

[0036] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A device for producing recycled plastic particles, comprising a frame (1) and a hot melt assembly (2), characterized in that: The hot melt assembly (2) is arranged on the top of the frame (1), and an extrusion assembly (3) is arranged at the bottom of the frame (1). The hot melt assembly (2) and the extrusion assembly (3) are connected via a connecting tube (4), and a pelletizing device (5) is arranged at one end of the extrusion assembly (3); The pelletizing device (5) comprises a housing (6) fixedly connected to one end of the extrusion assembly (3), a driver (7) is provided inside the housing (6), a side wall of the driver (7) is rotatably connected to pelletizing assemblies (8) equidistantly distributed around the axis of the extrusion assembly (3), and a drive shaft (9) for driving the driver (7) to rotate is fixedly connected to the end of the extrusion assembly (3), and the drive shaft (9) passes through the driver (7); The frame (1) comprises an upper frame (12) and a lower frame (11) which are correspondingly distributed up and down, and support columns (13) distributed in a rectangular array are fixedly connected between the lower frame (11) and the upper frame (12); The hot melt assembly (2) includes a first heating cylinder (21) fixedly mounted on the top of the upper frame (12), the first heating cylinder (21) is internally rotatably connected to a first screw rod (23), one end of the top of the first heating cylinder (21) is fixedly connected to a feed hopper (22), the top of the upper frame (12) is fixedly connected to a first coupling (24), a first reduction gearbox (25) and a first motor (26), one end of the first screw rod (23) is fixedly connected to one end of the first reduction gearbox (25) through the first coupling (24), the output shaft of the first motor (26) and the input shaft of the first reduction gearbox (25) are both fixedly sleeved with a first pulley (27), and the two first pulleys (27) are connected by a belt transmission; The extrusion assembly (3) includes a second heating tube (31) fixedly connected to the top of the bottom frame (11), the second heating tube (31) and the first heating tube (21) are connected through a connecting tube (4), the interior of the second heating tube (31) is rotatably connected to a second screw rod (32), one end of the interior of the second heating tube (31) is installed with an extrusion die (33), one end of the second screw rod (32) passes through the middle of the extrusion die (33), the top of the bottom frame (11) is fixedly connected to a second coupling (34), a second reduction box (35) and a second motor (37), the other end of the second screw rod (32) is fixedly connected to the second reduction box (35) through the second coupling (34), the output shaft of the second motor (37) and the input end of the second reduction box (35) are both fixedly sleeved with a second pulley (36), and the two second pulleys (36) are connected by a belt drive.

2. A device for producing recycled plastic particles according to claim 1, characterized in that: One end of the shell cover (6) is provided with observation grooves (61) distributed equidistantly around the axis of the shell cover (6), and the bottom of the side wall of the shell cover (6) is provided with a leakage groove (62).

3. A device for producing recycled plastic particles according to claim 2, characterized in that: The drive shaft (9) is a hollow structure. The side wall of the drive shaft (9) is provided with equally spaced sliding grooves (93). The interior of the drive shaft (9) is rotatably connected to a screw rod (91). One end of the screw rod (91) is fixedly connected to a hexagonal socket head (92).

4. A device for producing recycled plastic particles according to claim 3, characterized in that: The driver (7) includes a center gear (71) and an internal gear (72), the drive shaft (9) passes through the center gear (71), a center hole (712) is provided in the middle of the center gear (71), a threaded barrel (713) is provided inside the center hole (712), the threaded barrel (713) is threadedly connected to the screw rod (91), the side wall of the threaded barrel (713) is fixedly connected with equidistantly distributed slides (714), a plurality of the slides (714) are respectively slidably connected to the inside of a plurality of the slide grooves (93), symmetrically distributed transmission gears (73) are provided between the center gear (71) and the internal gear (72), the center gear (71) is meshed and connected to the internal gear (72) through two of the transmission gears (73), and the transmission gear (73) is rotationally connected to one end of the housing (6) through a rotating shaft.

5. The device for producing recycled plastic particles according to claim 4, characterized in that: The middle part of the extrusion die (33) is rotatably connected to a base cylinder (74), the drive shaft (9) is rotatably connected to the base cylinder (74) via a bearing, one end of the base cylinder (74) is fixedly connected to a disc (75), connecting rods (76) distributed at equal intervals are fixedly connected between the internal gear (72) and the base cylinder (74), one end of the disc (75) is fixedly connected to protrusions (77) distributed at equal intervals, and a surface of the central gear (71) is provided with a slot (711) that matches the protrusion (77).

6. The device for producing recycled plastic particles according to claim 5, characterized in that: An annular groove (751) is provided at the edge of one end of the disc (75), and through holes (752) distributed at equal intervals are provided at one end of the annular groove (751). A diverter (78) is provided inside the annular groove (751), and the diverter (78) includes a ring (781), and one end of the ring (781) is fixedly connected to equidistantly distributed ejector pins (782), and a plurality of the ejector pins (782) respectively penetrate a plurality of the through holes (752). A spring (783) is fixedly connected inside the through hole (752), and the spring (783) is sleeved on the side wall of the corresponding ejector pin (782), and one end of the spring (783) is fixedly connected to the side wall of the ejector pin (782).

7. The device for producing recycled plastic particles according to claim 6, characterized in that: The pelletizing assembly (8) includes a pelletizing knife (81), one end of which is fixedly connected to a shaft (82) and a rotating ring (83), the shaft (82) and the rotating ring (83) being concentrically arranged, the side wall of the base cylinder (74) being provided with a mounting groove (741) corresponding to the shaft (82), the periphery of the mounting groove (741) being provided with an annular groove (742), the rotating ring (83) being rotatably connected inside the annular groove (742), the shaft (82) being rotatably connected inside the mounting groove (741) via a bearing, the side wall of the shaft (82) being sleeved with a torsion spring (84), one end of the torsion spring (84) being fixedly connected to the side wall of the shaft (82), and the other end of the torsion spring (84) being fixedly connected to the side wall of the mounting groove (741).

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