Plastic recycling and granulating device for production

Abstract

The invention relates to the technical field of plastic recycling and production, and discloses a plastic recycling and granulating device for production, which comprises a pre-tightening driven mechanism and a strip-shaped shaping head, an extrusion forming hole capable of carrying out extrusion forming on flowing molten plastic and an annular cooling cavity which is arranged on the periphery of the extrusion forming hole and can store cooling liquid are formed in the extrusion forming hole. According to the plastic recycling and granulating device for production, molten plastic is cooled and shaped into strips, the strip-shaped plastic is cut into particles under the action of the rotary tool bit, and the plastic is cut after being cooled and shaped, so that the plastic recycling and granulating device has the characteristics of strong cutting effect and high yield; according to the device, the rotary tool bit can abut against the end of the discharge port in a pre-tightening mode, so that higher rotary shearing force is achieved, and the quality of particulate matter finished products is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic recycling production, in particular to a plastic recycling granulation device for production. Background Art

[0002] Traditional methods for treating waste plastics include composting, landfilling, and incineration, all of which seriously affect the reuse of plastic resources. These treatment methods not only block the path of plastic recycling, but also produce highly toxic substances such as dioxins after incineration, causing secondary pollution. Therefore, existing waste disposal technologies cannot make reasonable and effective use of plastics, and plastics cannot be re-entered into production and life, resulting in a huge waste of resources. Most of the granulation equipment in waste plastic processing equipment directly feeds the plastics into the extruder for melting, and further mixes them evenly, passes through a multi-hole die, forms multi-layer strips, and then makes pellets. However, the existing granulation device does not crush the plastic into particles of a certain size, and during the melting process, phenomena such as slow melting and difficult melting will occur, which will eventually lead to clogging of the extrusion die.

[0003] To this end, the Chinese patent publication number "CN112388863B" announced a "plastic recycling granulation device for production", whose main structure includes a crushing box, a heating box, a granulation box and a discharge box. Two crushing rollers are provided in the crushing box, and a plurality of cutters are provided on the crushing rollers. A knife groove is provided between two adjacent cutters, and the cutters on the two crushing rollers are staggered. A first partition is provided between the crushing box and the heating box, and a first discharge plate is provided in the middle of the first partition. A first rotating shaft is provided on both sides of the first partition, and a second rotating shaft is provided on the first discharge plate. Two pressing rollers are provided in the heating box, and two support plates are provided between the two pressing rollers. An extrusion box is provided, and an extrusion die is provided at the connection between the extrusion box and the discharge box. A cutting blade and a cooling pool are provided in the discharge box. The production plastic recycling and granulation device allows the melted plastic to enter the extrusion box, and the heater continues to heat to ensure that the plastic is completely melted. The second spiral pushing and stirring blade pushes the plastic to the end of the extrusion die. The plastic coming out of the extrusion die end is a strip material. The strip material can be cut into granules by the cutting blade and cooled by the cooling pool. During the whole process, the bottom of the first stirring plate and the second stirring plate are both brush-shaped, which can clean the first discharge plate and the second discharge plate to prevent blockage. At the same time, during the rotation of the cutting blade, the elastic protrusion can prevent the discharge hole of the extrusion die from being blocked.

[0004] However, the plastic will form a quick-dissolving state after melting. When the quick-dissolving state is cut by the cutting blade, due to its own viscosity, the melted plastic will adhere to the surface of the equipment or the surface of the cutting blade, which will seriously affect the formation of particles. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a plastic recycling and granulation device for production, which allows the melted plastic to cool and shape into strips, and the strip-shaped plastic is cut into particles under the action of a rotating cutter head. Since the plastic is cut after cooling and shaping, it has the characteristics of strong cutting effect and high yield. In addition, the device can make the rotating cutter head contact the end of the discharge port in a pre-tightened manner, thereby having a stronger rotational shear force, further improving the quality of the finished particle product, and solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plastic recycling and granulation device for production, comprising a horizontal conveying pipe with a support base installed at the bottom, a No. 1 raw material conveying chamber arranged inside the horizontal conveying pipe and having an opening at one end, a driving motor fixedly installed at the solid end of the horizontal conveying pipe, a raw material storage shell arranged above the horizontal conveying pipe, and a raw material storage chamber arranged inside the raw material storage shell and connected to the No. 1 raw material conveying chamber at the bottom, and also comprising a pre-tightened driven mechanism, the interior of which is provided with a metal screw capable of rotating with the rotor of the driving motor and directing the raw material, a rotating cutter head capable of cutting the shaped strip body when rotating, and a coil spring capable of generating an elastic pre-tightening force on the rotating cutter head; and a strip-shaped forming head, the interior of which is provided with an extrusion forming hole capable of extruding the flowing molten plastic, and an annular cooling chamber arranged around the extrusion forming hole and capable of storing cooling liquid.

[0007] Preferably, the pre-tightened driven mechanism includes a coupling for mounting a metal screw on the rotor end of the driving motor, one end of the metal screw is provided with a hollow rotating shaft with an integral structure therewith, a horizontal component movable cavity is provided inside the hollow rotating shaft, one end of the horizontal component movable cavity is provided with a limiting slide groove, and the other end of the horizontal component movable cavity is provided with a rod body through-hole connected to the external space. The hollow rotating shaft is provided with a built-in movable block capable of horizontally moving along the horizontal component movable cavity located inside the horizontal component movable cavity, and the built-in movable block is fixedly installed with a horizontal limiting rod capable of sliding along the limiting slide groove at the end facing the limiting slide groove, and the other end of the built-in movable block is fixedly installed with a horizontal telescopic rod passing through the rod body through-hole, and the horizontal telescopic rod is provided with a coil spring in a compressed state on the outer periphery of the rod body located inside the horizontal component movable cavity, and the horizontal telescopic rod is fixedly installed with a rotating cutter head on the rod body located outside the hollow rotating shaft.

[0008] Preferably, after the driving motor is started, its rotor drives the metal screw to rotate, so that the raw materials around the metal screw move toward the first raw material conveying chamber.

[0009] Preferably, the structural shape of the cross section of the rod body through hole is consistent with the structural shape of the cross section of the horizontal telescopic rod, both of which are polygonal structures, and the structural dimensions of the cross section of the rod body through hole match the structural dimensions of the cross section of the horizontal telescopic rod.

[0010] Preferably, the strip forming head includes a strip forming head, one end of the strip forming head is provided with a No. 1 flange plate which is an integral structure with it, the interior of the strip forming head is provided with a No. 2 raw material conveying cavity which is connected to the open end of the No. 1 raw material conveying cavity, the interior of the strip forming head is provided with a plurality of extrusion forming holes which are connected to the edge of one end of the No. 2 raw material conveying cavity and the external space, the center of the strip forming head is provided with a shaft placement hole for placing a hollow rotating shaft, the strip forming head is provided with an annular cooling cavity on the periphery of the middle area of the extrusion forming hole, the bottom of the strip forming head is provided with an injection channel which is connected to the bottom area of the annular cooling cavity on the side away from the No. 1 flange plate, the bottom of the strip forming head is provided with a liquid outlet channel which is connected to the top area of the annular cooling cavity on the side close to the No. 1 flange plate, and the extrusion forming hole and the shaft placement hole are provided with a conical guide structure at the open end located inside the No. 2 raw material conveying cavity to facilitate the movement of the molten plastic toward the extrusion forming hole.

[0011] Preferably, during operation, the liquid injection channel is communicated with a liquid outlet of a refrigerator for discharging refrigeration liquid, and the liquid inlet of the refrigerator is communicated with the liquid outlet channel.

[0012] Preferably, one end of the rotary cutter head abuts against the end surface of the strip-shaped shaping head, and the rotary cutter head can cut the molded plastic discharged outward from the extrusion molding hole.

[0013] Preferably, it also includes a high-frequency induction heating mechanism, which is provided with an annular hollow shell installed between the open end of the horizontal conveying pipe and the No. 1 flange, and an induction coil installed inside the annular hollow shell and capable of heating the metal screw after a high-frequency current is passed through it.

[0014] Preferably, the high-frequency induction heating mechanism includes a No. 2 flange and a No. 3 flange arranged at both ends of the annular hollow shell, the No. 2 flange and the No. 3 flange are fixedly connected to the open end of the horizontal conveying pipe and the No. 1 flange respectively, and a No. 3 raw material conveying cavity for placing a metal screw and material conveying is provided in the center of the annular hollow shell, and an annular component mounting cavity is provided at the annular wall thickness of the annular hollow shell, and an induction coil is installed in the annular component mounting cavity of the annular hollow shell, and a terminal penetrating the annular hollow shell is fixedly installed at both ends of the induction coil.

[0015] Preferably, during operation, the terminal is connected to the current output end of an output transformer, and the current input end of the output transformer is connected to the current output end of a high-frequency generator.

[0016] Compared with the prior art, the present invention provides a plastic recycling and granulation device for production, which has the following beneficial effects: The melted plastic is cooled and shaped into strips, which are then cut into granules by the rotating cutter head. Since the plastic is cut after cooling and shaping, it has the characteristics of strong cutting effect and high yield rate. In addition, the device can make the rotating cutter head contact the end of the discharge port in a pre-tightened manner, thereby having a stronger rotary shear force, further improving the quality of the finished granules. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 is a three-dimensional cross-sectional view of the present invention; Figure 3 is a three-dimensional diagram of the preloaded follower mechanism of the present invention; Figure 4 is a three-dimensional cross-sectional view of the preloaded follower mechanism of the present invention; Figure 5 A three-dimensional diagram of the extrusion cooling and shaping mechanism of the present invention; Figure 6 It is a three-dimensional cross-sectional view of the extrusion cooling shaping mechanism of the present invention; Figure 7 A perspective view of the high-frequency induction heating mechanism of the present invention; Figure 8 It is a three-dimensional cross-sectional view of the high-frequency induction heating mechanism of the present invention.

[0018] Among them: 1. Horizontal conveying pipe; 2. Support base; 3. No. 1 raw material conveying chamber; 4. Drive motor; 5. Raw material storage shell; 6. Raw material storage chamber; 7. Preloaded driven mechanism; 71. Metal screw; 72. Coupling; 73. Hollow shaft; 74. Horizontal component movable chamber; 75. Limiting slide; 76. Rod body perforation; 77. Built-in moving block; 78. Horizontal limiting rod; 79. Horizontal telescopic rod; 710. Coil spring; 711. Rotating cutter head; 8. Extrusion cold Cooling and shaping mechanism; 81. Strip shaping head; 82. Flange No. 1; 83. Raw material conveying cavity No. 2; 84. Shaft placement hole; 85. Extrusion forming hole; 86. Annular cooling cavity; 87. Liquid outlet channel; 88. Liquid injection channel; 89. Conical guide structure; 9. High-frequency induction heating mechanism; 91. Annular hollow shell; 92. Flange No. 2; 93. Flange No. 3; 94. Raw material conveying cavity No. 3; 95. Annular component installation cavity; 96. Induction coil; 97. Terminal. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 and Figure 2 A plastic recycling and granulation device for production includes a horizontal conveying pipe 1 with a support base 2 installed at the bottom, a raw material conveying chamber 3 arranged inside the horizontal conveying pipe 1 and open at one end, a driving motor 4 fixedly installed at the solid end of the horizontal conveying pipe 1, a raw material storage shell 5 arranged above the horizontal conveying pipe 1, and a raw material storage chamber 6 arranged inside the raw material storage shell 5 and connected to the No. 1 raw material conveying chamber 3 at the bottom. First, the injection channel 88 is connected to the liquid outlet of a refrigerator for discharging refrigeration liquid, and the liquid inlet of the refrigerator is connected to the liquid outlet channel 87, and then the terminal 97 is connected to the current output end of an output transformer, and the current input end of the output transformer is connected to the current output end of a high-frequency generator, and then the plastic is put into the raw material storage chamber 6. When the metal screw 71 is heated to a suitable temperature, the driving motor 4 is started, and the rotor will drive the metal screw 71 to rotate, thereby realizing directional drive of the plastic.

[0021] For directional drive of plastics and preloaded cutting effects, see Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , it is necessary to set up a pre-tightened driven mechanism 7, which is internally provided with a metal screw 71 that can rotate with the rotor of the driving motor 4 and directionally transport the raw material, a rotating cutter head 711 that can cut the shaped strip body when rotating, and a coil spring 710 that can generate an elastic pre-tightening force on the rotating cutter head 711. The rotation of the metal screw 71 will cause the plastic to be directionally transported. At the same time, it will drive the horizontal telescopic rod 79 to rotate. The rotation of the horizontal telescopic rod 79 can cut the strip-shaped shaped material discharged outward from the extrusion molding hole 85, thereby forming granular plastic. While cutting, due to the elastic force of the coil spring 710, the rotating cutter head 711 can contact the end face of the strip-shaped shaping head 81 with elastic pressure, so that the rotating cutter head 711 forms a pre-tightening shearing force, which has a more efficient cutting effect.

[0022] For the specific structure of the preloaded follower mechanism 7, please refer to Figure 3 and Figure 4, including a coupling 72 for mounting a metal screw 71 on the rotor end of the drive motor 4, one end of the metal screw 71 is provided with a hollow rotating shaft 73 with an integral structure therewith, a horizontal component movable cavity 74 is provided inside the hollow rotating shaft 73, one end of the horizontal component movable cavity 74 is provided with a limiting slide groove 75, and the other end of the horizontal component movable cavity 74 is provided with a rod body through-hole 76 communicating with the external space, and the hollow rotating shaft 73 is provided with a built-in moving block 77 capable of horizontally moving along the horizontal component movable cavity 74 in the interior of the horizontal component movable cavity 74, and the built-in moving block 77 is fixedly installed with a horizontal limiting rod 78 capable of sliding along the limiting slide groove 75 at the end facing the limiting slide groove 75, and the built-in moving block The other end of 77 is fixedly installed with a horizontal telescopic rod 79 that passes through the rod body through-hole 76. The horizontal telescopic rod 79 is provided with a helical spring 710 in a compressed state on the outer periphery of the rod body located inside the movable cavity 74 of the horizontal component. The horizontal telescopic rod 79 is fixedly installed with a rotating cutter head 711 on the rod body located outside the hollow rotating shaft 73. After the driving motor 4 is started, its rotor drives the metal screw 71 to rotate, causing the raw materials around the metal screw 71 to move toward the direction of the No. 1 raw material conveying cavity 3. The structural shape of the cross section of the rod body through-hole 76 is consistent with the structural shape of the cross section of the horizontal telescopic rod 79, both of which are polygonal structures, and the structural dimensions of the cross section of the rod body through-hole 76 match the structural dimensions of the cross section of the horizontal telescopic rod 79.

[0023] To achieve cooling and shaping of molten plastic, please refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 , it is necessary to set a strip-shaped shaping head 8, which is provided with an extrusion shaping hole 85 capable of extruding the flowing molten plastic, and an annular cooling cavity 86 arranged outside the extrusion shaping hole 85 and capable of storing cooling liquid. When the refrigerator is started, the cooling liquid will circulate inside the annular cooling cavity 86. Since the cooling liquid enters through the injection channel 88 and is discharged to the outside through the liquid outlet channel 87, and the injection channel 88 and the liquid outlet channel 87 are staggered relative to the annular cooling cavity 86, the flowing cooling liquid can cool the plastic passing through the extrusion shaping hole 85 to a greater extent, so that the melted plastic forms strips after cooling and is discharged outwardly through the extrusion shaping hole 85, thereby realizing the cooling and shaping of the melted plastic.

[0024] For the specific structure of the strip shaping head 8, please refer to Figure 5 and Figure 6, including a strip-shaped shaping head 81, one end of which is provided with a No. 1 flange 82 of an integral structure therewith, a No. 2 raw material conveying cavity 83 communicating with the open end of the No. 1 raw material conveying cavity 3 is provided inside the strip-shaped shaping head 81, a plurality of extrusion forming holes 85 communicating with the edge of one end of the No. 2 raw material conveying cavity 83 and the external space are provided inside the strip-shaped shaping head 81, a shaft placement hole 84 for placing the hollow rotating shaft 73 is provided at the center of the strip-shaped shaping head 81, an annular cooling cavity 86 is provided on the periphery of the central area of the extrusion forming hole 85, and a bottom of the strip-shaped shaping head 81 is provided on the side away from the No. 1 flange 82 to communicate with the annular cooling cavity 8 6. The bottom of the strip-shaped forming head 81 is provided with a liquid outlet channel 87 connected to the top area of the annular cooling chamber 86 on the side close to the No. 1 flange 82. The extrusion forming hole 85 and the shaft placement hole 84 are provided with a conical guide structure 89 at the open end located inside the No. 2 raw material conveying chamber 83 to facilitate the movement of the molten plastic toward the extrusion forming hole 85. When working, the liquid injection channel 88 is connected with the liquid outlet of a refrigerator for discharging refrigeration liquid, and the liquid inlet of the refrigerator is connected with the liquid outlet channel 87. One end of the rotating cutter head 711 abuts against the end face of the strip-shaped forming head 81, and the rotating cutter head 711 can cut the molded plastic discharged outward from the extrusion forming hole 85.

[0025] For the melting function of plastic during plastic conveying, please refer to Figure 1 、 Figure 2 、 Figure 7 and Figure 8 , it is necessary to set up a high-frequency induction heating mechanism 9, which is provided with an annular hollow shell 91 installed between the open end of the horizontal conveying pipe 1 and the No. 1 flange 82, and an induction coil 96 installed inside the annular hollow shell 91 and capable of heating the metal screw 71 after a high-frequency current is passed through it. The high-frequency generator is started, and the high-frequency current is transmitted to the induction coil 96 through the output transformer. The induction coil 96 generates a strong magnetic flux with an instantaneous change in polarity. The metal screw 71 is placed at the center of the induction coil 96. The strong magnetic flux penetrates the entire metal screw 71, and eddy currents opposite to the heating current are generated inside it. Due to the resistance of the metal screw 71, the eddy current generates heat energy during the flow process, thereby increasing the temperature of the metal screw 71 until the temperature of the metal screw 71 reaches an appropriate temperature. When the plastic passes through this area, it will be melted by the metal screw 71 to form molten plastic, thereby performing the melting function of the plastic during the plastic transportation process.

[0026] For the specific structure of the high-frequency induction heating mechanism 9, please refer to Figure 7 and Figure 8, including a No. 2 flange 92 and a No. 3 flange 93 arranged at both ends of an annular hollow shell 91, the No. 2 flange 92 and the No. 3 flange 93 are fixedly connected to the open end of the horizontal conveying pipe 1 and the No. 1 flange 82 respectively, and a No. 3 raw material conveying cavity 94 for placing the metal screw 71 and material conveying is provided in the center of the annular hollow shell 91, and an annular component mounting cavity 95 is provided at the annular wall thickness of the annular hollow shell 91. The annular hollow shell 91 is provided with an induction coil 96 inside the annular component mounting cavity 95, and a terminal 97 that passes through the annular hollow shell 91 is fixedly installed at both ends of the induction coil 96. When working, the terminal 97 is connected to the current output end of an output transformer, and the current input end of the output transformer is connected to the current output end of a high-frequency generator.

[0027] When in use, the injection channel 88 is connected to the liquid outlet of a refrigerator for discharging refrigerant liquid, and the liquid inlet of the refrigerator is connected to the liquid outlet channel 87, and then the terminal 97 is connected to the current output end of an output transformer, and the current input end of the output transformer is connected to the current output end of a high-frequency generator, and then the plastic is placed inside the raw material storage chamber 6, and the high-frequency generator is started. The high-frequency current is transmitted to the induction coil 96 through the output transformer, and the induction coil 96 generates a strong magnetic flux with instantaneous polarity change. The metal screw 71 is placed at the center of the induction coil 96. The strong magnetic flux penetrates the entire metal screw 71, and eddy currents opposite to the heating current are generated inside it. Due to the resistance of the metal screw 71, the eddy currents generate heat energy during the flow process, thereby increasing the temperature of the metal screw 71 until the temperature of the metal screw 71 increases to Appropriate temperature. When the metal screw 71 is heated to a suitable temperature, the drive motor 4 is started, and the rotor will drive the metal screw 71 to rotate. When the plastic passes through the heated metal screw 71, it will be melted by the metal screw 71 to form melted plastic. The refrigerator is started, and the refrigerant liquid circulates inside the annular cooling chamber 86. Since the refrigerant liquid enters through the injection channel 88 and is discharged to the outside through the outlet channel 87, and the injection channel 88 and the outlet channel 87 are offset relative to the annular cooling chamber 86, the flowing refrigerant can cool the plastic passing through the extrusion forming hole 85 to a greater extent, so that the melted plastic forms strips after cooling and is discharged outward through the extrusion forming hole 85. The rotation of the horizontal telescopic rod 79 can cut the strip-shaped shaped object discharged outward from the extrusion forming hole 85 to form granular plastic.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A plastic recycling and granulating device for production, comprising a horizontal conveying pipe (1) with a support base (2) installed at the bottom, a first raw material conveying chamber (3) arranged inside the horizontal conveying pipe (1) and having an open end, a driving motor (4) fixedly mounted on the solid end of the horizontal conveying pipe (1), a raw material storage shell (5) arranged above the horizontal conveying pipe (1), and a raw material storage chamber (6) arranged inside the raw material storage shell (5) and communicating with the first raw material conveying chamber (3) at the bottom, characterized in that: Also includes, A preloaded driven mechanism (7) is provided with a metal screw (71) capable of rotating with the rotor of the drive motor (4) and directional conveying the raw material, a rotating cutter head (711) capable of cutting the shaped strips during rotation, and a coil spring (710) capable of generating an elastic preload force on the rotating cutter head (711); A strip-shaped shaping head (8) is provided inside which an extrusion forming hole (85) capable of extruding flowing molten plastic is provided, and an annular cooling cavity (86) is provided outside the extrusion forming hole (85) and capable of storing cooling liquid inside.

2. The plastic recycling and granulation device for production according to claim 1, characterized in that: The preloaded driven mechanism (7) includes a coupling (72) for mounting a metal screw (71) on the rotor end of a driving motor (4), one end of the metal screw (71) is provided with a hollow rotating shaft (73) with an integral structure therewith, a horizontal component movable cavity (74) is provided inside the hollow rotating shaft (73), one end of the horizontal component movable cavity (74) is provided with a limiting sliding groove (75), the other end of the horizontal component movable cavity (74) is provided with a rod body through hole (76) connected to the external space, and the hollow rotating shaft (73) is provided with a rod body through hole (76) that can move along the horizontal component movable cavity (74) inside the horizontal component movable cavity (74). The movable cavity (74) is provided with a built-in movable block (77) that moves horizontally. The built-in movable block (77) is fixedly installed with a horizontal limiting rod (78) that can slide along the limiting sliding groove (75) at the end facing the limiting sliding groove (75). The other end of the built-in movable block (77) is fixedly installed with a horizontal telescopic rod (79) that passes through the rod body through-hole (76). The horizontal telescopic rod (79) is provided with a helical spring (710) in a compressed state on the outer periphery of the rod body located inside the movable cavity (74) of the horizontal component. The horizontal telescopic rod (79) is fixedly installed with a rotating cutter head (711) on the rod body located outside the hollow rotating shaft (73).

3. The plastic recycling and granulation device for production according to claim 2, characterized in that: After the driving motor (4) is started, its rotor drives the metal screw (71) to rotate, causing the raw materials around the metal screw (71) to move toward the first raw material conveying chamber (3).

4. The plastic recycling and granulation device for production according to claim 3, characterized in that: The structural shape of the cross section of the rod body through hole (76) is consistent with the structural shape of the cross section of the horizontal telescopic rod (79), both of which are polygonal structures, and the structural dimensions of the cross section of the rod body through hole (76) match the structural dimensions of the cross section of the horizontal telescopic rod (79).

5. The plastic recycling and granulation device for production according to claim 4, characterized in that: The strip-shaped shaping head (8) comprises a strip-shaped shaping head (81), one end of the strip-shaped shaping head (81) is provided with a No. 1 flange (82) integrally formed therewith, the interior of the strip-shaped shaping head (81) is provided with a No. 2 raw material conveying cavity (83) communicating with the open end of the No. 1 raw material conveying cavity (3), the interior of the strip-shaped shaping head (81) is provided with a plurality of extrusion forming holes (85) communicating with the edge of one end of the No. 2 raw material conveying cavity (83) and the external space, the center of the strip-shaped shaping head (81) is provided with a shaft body placement hole (84) for placing a hollow rotating shaft (73), and the strip-shaped shaping head (81) is provided with a shaft body placement hole (84) for placing a hollow rotating shaft (73), and the strip-shaped shaping head (81) is provided with a shaft body placement hole (84) for placing a hollow rotating shaft (73) at the extrusion forming hole. An annular cooling cavity (86) is provided on the periphery of the middle area of (85), a liquid injection channel (88) communicating with the bottom area of the annular cooling cavity (86) is provided at the bottom of the strip-shaped shaping head (81) on the side away from the No. 1 flange (82), and a liquid outlet channel (87) communicating with the top area of the annular cooling cavity (86) is provided at the bottom of the strip-shaped shaping head (81) on the side close to the No. 1 flange (82), and a conical guide structure (89) is provided at the open end of the extrusion molding hole (85) and the shaft placement hole (84) located inside the No. 2 raw material conveying cavity (83) to facilitate the movement of the molten plastic toward the extrusion molding hole (85).

6. The plastic recycling and granulation device for production according to claim 5, characterized in that: During operation, the liquid injection channel (88) is communicated with a liquid outlet of a refrigerator for discharging refrigeration liquid, and the liquid inlet of the refrigerator is communicated with the liquid outlet channel (87).

7. The plastic recycling and granulation device for production according to claim 6, characterized in that: One end of the rotating cutter head (711) abuts against the end surface of the strip-shaped shaping head (81), and the rotating cutter head (711) is capable of cutting the molded plastic discharged outward from the extrusion molding hole (85).

8. The plastic recycling and granulation device for production according to claim 7, characterized in that: It also includes a high-frequency induction heating mechanism (9), which is provided with an annular hollow shell (91) installed between the open end of the horizontal conveying pipe (1) and the first flange (82), and an induction coil (96) installed inside the annular hollow shell (91) and capable of heating the metal screw (71) after a high-frequency current is passed through it.

9. The plastic recycling and granulation device for production according to claim 8, characterized in that: The high-frequency induction heating mechanism (9) includes a second flange (92) and a third flange (93) provided at both ends of an annular hollow shell (91), wherein the second flange (92) and the third flange (93) are fixedly connected to the open end of the horizontal conveying pipe (1) and the first flange (82), respectively. A third raw material conveying cavity (94) for placing a metal screw (71) and conveying materials is provided at the center of the annular hollow shell (91), and an annular component mounting cavity (95) is provided at the annular wall thickness of the annular hollow shell (91). An induction coil (96) is installed inside the annular component mounting cavity (95) of the annular hollow shell (91), and a terminal (97) penetrating the annular hollow shell (91) is fixedly installed at both ends of the induction coil (96).

10. The plastic recycling and granulating device for production according to claim 9, characterized in that: During operation, the terminal (97) is connected to the current output end of an output transformer, and the current input end of the output transformer is connected to the current output end of a high-frequency generator.

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