CN117841222A - Equipment for manufacturing plastic particles from waste plastics - Google Patents

Abstract

The invention discloses equipment for manufacturing plastic particles from waste plastics, which relates to the technical field of plastic particle machines and comprises the following steps: the crusher, the conveyor belt structure I and the conveyor belt structure II; the outer side frame of the casing of the pulper is fixedly arranged on the ground, the outlet of the pulper is positioned above the conveying belt structure I, and the frame of the conveying belt structure I is fixedly arranged on the ground; the weighing structure is fixedly arranged on the ground, and a controller is fixedly arranged on the weighing structure; the signal processor in the controller receives the signals, and the central processing unit in the controller controls the power utilization elements of the equipment to orderly operate; according to the invention, the high-temperature heating equipment is used for heating and melting, the melted substances are extruded into a plurality of strip-shaped substances through the extrusion equipment, the strip-shaped substances move through the primary cooling equipment along with extrusion and are primarily cooled by the primary cooling equipment, so that the strip-shaped substances are conveniently cut off, and the strip-shaped substances are prevented from being adhered to the equipment in the moving process.

Description

Equipment for making plastic granules from waste plastics

Technical Field

The invention relates to the technical field of plastic granulator machines, in particular to a device for making plastic granules from waste plastics.

Background technique

Plastic is a material with excellent properties that can be used in many fields. Nowadays, with the continuous progress of society as a whole and the continuous strengthening of industrial level, the demand for plastic products is also increasing, and it is particularly important to deal with those discarded plastic products; Plastic has a characteristic, that is, the structure is stable and difficult to degrade, which not only makes plastic products have a very long service life, but also makes it difficult for discarded plastic products to degrade in the natural environment, which brings a series of hazards; visual pollution, plastic products are generally made into various colors for the sake of beauty, and various plastic wastes gathered together will bring adverse stimulation to people's vision, causing "visual pollution", and these discarded plastic wastes will also cause certain damage to the overall beauty of the city and affect the city appearance; cause great harm to the environment, due to the characteristics of plastic waste that are difficult to degrade, it will cause continuous and deep harm to the surrounding environment;

The Chinese patent with application number: 202021845776.0 discloses a plastic granule production device, including a water tank, a material guide device, a melting device, a spraying device, a through groove, a blocking net and an inclined groove. The left side of the upper surface of the water tank is welded with a material guide device, the left side of the upper surface of the material guide device is penetrated with a melting device, the right side of the material guide device is penetrated with a spraying device, the bottom of the spraying device is penetrated with a through groove, the bottom of the inner surface of the through groove is welded with a blocking net, and the right side of the upper surface of the water tank is embedded with an inclined groove; however, the mechanism designed in this patent does not reflect the advantages compared with the prior art, and the patent invention cannot achieve weighing and proportioning, and cannot improve the efficiency of making plastic granules, which has limitations;

Therefore, it is necessary to invent a device for making plastic granules from waste plastics, which can not only improve the efficiency of making plastic granules, but also perform automatic weighing and proportioning to make the proportioning more scientific and modern.

Summary of the invention

In view of the above problems, the present invention provides a device for making plastic particles from waste plastics, which not only realizes the automated production of plastic particles, but also can add corresponding additives according to the weight of the waste plastics, with a more reasonable and scientific ratio, making the production of plastic particles more precise and scientific.

The technical solution used in the present invention is: a device for making plastic particles from waste plastics, including: a crushing machine, a conveyor belt structure I, a weighing structure, a conveyor belt structure II, a modulation auxiliary agent structure, a melting extrusion cooling structure, a cooling structure, and a shredding structure;

The outer frame of the shell of the crushing machine is fixedly installed on the ground, the outlet of the crushing machine is located above the conveyor belt structure I, and the frame of the conveyor belt structure I is fixedly installed on the ground; the weighing structure is fixedly installed on the ground, and a controller is fixedly installed on the weighing structure; the signal is received by the signal processor in the controller, and the electrical components of the equipment are controlled to operate in an orderly manner by the central processing unit in the controller; the weighing structure is located below the outlet of the conveyor belt structure I, the weighing structure is located above the conveyor belt structure II, and the frame of the conveyor belt structure II is fixedly installed on the ground; the modulating agent structure is fixedly installed on the ground, the modulating agent structure is located above the high-temperature heating device of the melting extrusion cooling structure, the melting extrusion cooling structure is fixedly installed on the ground, the outlet of the preliminary cooling device of the melting extrusion cooling structure is located in front of the cooling structure, and the cooling structure is fixedly installed on the ground; the shredding structure is fixedly installed on the ground, and the shredding structure is located next to the melting extrusion cooling structure;

The cooling structure comprises: a cold water storage tank, a taking mechanism, a cooling mechanism, and a cylinder transmission mechanism;

The cold water storage tank is fixedly installed on the ground, and a water pipe is connected to the cold water storage tank, and the water pipe is connected to an external faucet; the taking mechanism is fixedly installed on the cold water storage tank, and the taking mechanism is located above the cooling mechanism, and the cooling mechanism is fixedly installed on the ground; the cylinder transmission mechanism is fixedly installed on the ground, and the cylinder transmission mechanism is located in front of the collection box I;

The shredding structure includes: a screw moving mechanism III, a push plate, a fixed cylinder, an irregular plate, a pressing plate, a special-shaped bracket, a servo motor IV, a rotating blade I, a rotating blade II, a collection box II, and a long moving mechanism III;

The screw moving mechanism III includes: a screw, a motor, a bracket, and a slider; the bracket is fixedly installed on the ground, a screw is rotatably installed on the bracket, the shaft of the screw is fixedly connected to the shaft of the motor fixedly installed on the bracket, the screw and the threaded hole of the slider are threadedly matched, the slider is slidably installed on the bracket, and the slider is fixedly connected to the push plate; the long moving mechanism III includes: a bracket, a limit rod; the bracket is fixedly installed on the ground, a limit rod is fixedly installed on the bracket, the limit rod is slidably connected to the slider, the slider is slidably installed on the bracket, and the slider is fixedly connected to the push plate; the frame of the fixed cylinder is fixedly installed on the ground; there are multiple irregular plates, and the multiple irregular plates are arranged in a circular array. A spring is fixedly installed at the rear end of each irregular plate, and the other end of the spring is fixedly connected to the inside of the fixed cylinder; there are multiple groups of pressing plates, and the multiple groups of pressing plates are installed in a linear array inside the fixed cylinder, each group of pressing plates has multiple pressing plates, and the multiple pressing plates in each group are distributed in a circular array, and a spring is fixedly installed at the rear end of the multiple pressing plates, and the other end of the spring is fixedly connected to the inside of the fixed cylinder; the special-shaped bracket is fixedly installed on the ground, and a servo motor IV is fixedly installed on the special-shaped bracket, and the shaft of the servo motor IV passes through the hole on the rotating blade I and is fixedly connected to the rotating blade II, and the rotating blade I is fixedly installed on the special-shaped bracket; the collecting box II is fixedly installed on the ground.

Preferably, the weighing structure comprises: a fixed support frame I, a screw moving mechanism I, a fixed block, a weighing cylinder, a servo motor I, and a baffle;

The fixed support frame I is fixedly installed on the ground, a rod is fixedly installed on the upper end surface of the fixed support frame I, a spring is fixedly installed on the upper end surface of the fixed support frame I, the other end of the spring is fixedly connected to the lower end surface of the weighing cylinder, the side surface of the weighing cylinder is fixedly connected to the fixed block, a slide groove is provided on the fixed block, the slide groove and the rod on the upper end surface of the fixed support frame I are slidably matched, and an induction receiver is fixedly installed on the lower end surface of the fixed block; the screw moving mechanism I includes: a screw, a motor, a bracket, and a slider; the bracket is fixedly installed on the fixed support frame I, a screw is rotatably installed on the bracket, the shaft of the screw is fixedly connected to the shaft of the motor fixedly installed on the bracket, the screw is threadedly matched with the threaded hole of the slider, the slider is slidably installed on the bracket, and an induction signal transmitter is provided on the slider; the servo motor I is fixedly installed on the weighing cylinder, and the shaft of the servo motor I is fixedly connected to the baffle.

Preferably, the preparation auxiliary agent structure comprises: an irregular support I, a starting mechanism, and an auxiliary agent storage mechanism;

The irregular bracket I is fixedly installed on the ground; there are three groups of starting mechanisms, which are distributed in a circular array and fixedly installed on the irregular bracket I respectively, and the spur racks of each group of starting mechanisms intermittently cooperate with the three cylindrical gears I of the three groups of storage auxiliary mechanisms on the same side respectively; there are three groups of storage auxiliary mechanisms, which are distributed in a linear array, the storage auxiliary mechanism at the top position is connected to the storage barrel of the storage auxiliary mechanism at the middle position, and the circular support plates of the three groups of storage auxiliary mechanisms are fixedly connected respectively, among which the circular support plate of the top storage auxiliary mechanism is fixedly installed on the irregular bracket I.

Preferably, the starting mechanism comprises: a screw moving mechanism II, a spur rack, and a fixed long plate;

The screw moving mechanism II includes: a screw, a motor, a bracket, and a slider; the bracket is fixedly installed on the irregular bracket I, and a screw is rotatably installed on the bracket. The shaft of the screw is fixedly connected to the shaft of the motor fixedly installed on the bracket, the screw and the threaded hole of the slider are threadedly matched, the slider is slidably installed on the bracket, the slider is fixedly connected to the spur rack, and the spur rack and cylindrical gear I are meshed with each other; the fixed long plate is fixedly installed on the bracket of the screw moving mechanism II.

Preferably, the storage aid mechanism comprises: cylindrical gear I, a control valve, a storage barrel, and a circular support plate;

There are three storage barrels, each of which is fixedly installed with a control valve at the lower end outlet of the three storage barrels. The three storage barrels are respectively fixedly installed on a circular support plate, and the circular support plate is fixedly installed on an irregular bracket I; a pulley is respectively fixedly installed on each control valve, and the pulley and the pulley fixedly installed on the end face of the cylindrical gear I are connected by a belt; there are three cylindrical gears I, and the three cylindrical gears I are distributed in a circular array, and the three cylindrical gears I are respectively rotatably installed on a fixed long plate on the same side.

Preferably, the melting, extruding and cooling structure comprises: a high temperature heating device, an extruding device and a preliminary cooling device;

The high-temperature heating equipment is fixedly installed on the ground, the outlet of the high-temperature heating equipment is connected to the inlet of the extrusion equipment, the extrusion equipment is fixedly installed on the ground, the outlet of the extrusion equipment is connected to the inlet of the preliminary cooling equipment, and the preliminary cooling equipment is fixedly installed on the ground.

Preferably, the taking mechanism comprises: a fixed bracket, a telescopic bracket, a square fixed plate, a single-sided arc-shaped clamping plate I, a cylindrical gear II, a small cylindrical gear, a single-sided arc-shaped clamping plate II, and a servo motor II;

One end of the fixed bracket is fixedly installed on the cold water storage tank, and the other end of the fixed bracket is fixedly connected to the upper end surface of the square fixed plate; the single-sided arc clamping plate I is rotatably installed on the side of the square fixed plate, the single-sided arc clamping plate I and the shaft of the cylindrical gear II are fixedly connected, the cylindrical gear II and the small cylindrical gear are meshed with each other, the small cylindrical gear is rotatably installed on the side of the square fixed plate, the small cylindrical gear is connected to the single-sided arc clamping plate II through a belt and a pulley, and the single-sided arc clamping plate II is rotatably installed on the side of the square fixed plate; the servo motor II is fixedly installed on the side of the square fixed plate, and the shaft of the servo motor II and the shaft of the small cylindrical gear are fixedly connected.

Preferably, the cooling mechanism comprises: a long moving mechanism I, a long moving mechanism II, a collecting box I, a fixed support frame II, a servo electric cylinder, a cutting blade, a square frame plate, a rotating single plate I, a cylindrical gear III, a cylindrical gear IV, and a rotating single plate II;

The long moving mechanism I comprises: a screw, a motor, a bracket, and a slider; the bracket is fixedly mounted on the ground, a screw is rotatably mounted on the bracket, the shaft of the screw is fixedly connected to the shaft of the motor fixedly mounted on the bracket, the screw is threadedly matched with the threaded hole of the slider, the slider is slidably mounted on the bracket, and the slider is fixedly connected to the side of the collection box I; the long moving mechanism II comprises: a bracket, a limit rod; the bracket is fixedly mounted on the ground, a limit rod is fixedly mounted on the bracket, the limit rod is slidably connected to the slider, the slider is slidably mounted on the bracket, and the slider is fixedly connected to the side of the collection box I; the fixed support frame II is fixedly mounted on the ground, fixed The end face of the servo electric cylinder is fixedly installed on the lower end face of the support frame II, and the telescopic rod end of the servo electric cylinder is fixedly connected to the cutting blade; the square frame plate is fixedly installed on the ground, and the side of the square frame plate is rotatably installed with a cylindrical gear III, the cylindrical gear III and the cylindrical gear IV are meshed with each other, and the cylindrical gear III is fixedly connected to the shaft of the rotating single plate I, and the rotating single plate I is rotatably installed on the square frame plate; the rotating single plate II is rotatably installed on the square frame plate, and the shaft at one end of the rotating single plate II is connected to the cylindrical gear IV through a belt and a pulley, and the shaft at the other end of the rotating single plate II is fixedly connected to the shaft of the motor fixedly installed on the square frame plate.

Preferably, the cylinder transmission mechanism comprises: an irregular bracket II, a rotating cylindrical barrel, and a servo motor III;

The irregular bracket II is fixedly installed on the ground, and a servo motor III is fixedly installed on the irregular bracket II; there are four rotating cylindrical cylinders, which are connected by belts and pulleys respectively, and the four rotating cylindrical cylinders are rotatably installed on the irregular bracket II respectively, and the axis of one of the rotating cylindrical cylinders is fixedly connected to the axis of the servo motor III.

The beneficial effects of the present invention compared with the prior art are:

1. After the strip material is spread on the rotating single plate Ⅰ and the rotating single plate Ⅱ, the servo electric cylinder is extended and retracted to drive the cutting blade to descend, thereby cutting the strip material. At this time, the motor on the square frame plate drives the rotating single plate Ⅱ to flip, and at the same time drives the cylindrical gear Ⅳ to rotate and drives the cylindrical gear Ⅲ to rotate, thereby driving the rotating single plate Ⅰ to flip, so that the cut strip material falls into the collection box Ⅰ, which is convenient for the quick cooling of the cut strip material.

2. The present invention heats and melts the material through a high-temperature heating device, and then squeezes the melted material into multiple strips through an extrusion device. The multiple strips move through a preliminary cooling device as they are extruded, and are preliminarily cooled by the preliminary cooling device, making it easier to cut the strips and preventing the strips from sticking to the device during movement.

3. The present invention repeatedly cuts the strip material several times and then drops the strip material into the servo electric cylinder until the strip material in the collection box I reaches a certain amount. By uniformly cutting multiple strip materials into plastic particles, the speed of making plastic particles can be increased.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the overall structure of the present invention from a first angle.

FIG. 2 is a schematic diagram of the overall structure of the present invention from a second angle.

FIG. 3 is a schematic diagram of a weighing structure of the present invention at a first angle.

FIG. 4 is an enlarged structural schematic diagram of point A in FIG. 3 of the present invention.

FIG. 5 is a schematic structural diagram of the modulation auxiliary agent structure of the present invention at a first angle.

FIG. 6 is an enlarged structural schematic diagram of point B in FIG. 5 of the present invention.

FIG. 7 is a schematic diagram of a cooling structure of the present invention at a first angle.

FIG. 8 is a schematic diagram of a partial structure of the cooling structure of the present invention from a first angle.

FIG. 9 is an enlarged structural schematic diagram of point C in FIG. 8 of the present invention.

FIG. 10 is a schematic diagram of another partial structure of the cooling structure of the present invention from a first angle.

FIG. 11 is a schematic diagram of the enlarged structure of point D in FIG. 10 of the present invention.

FIG. 12 is a schematic diagram of another partial structure of the cooling structure of the present invention from a first angle.

FIG. 13 is a schematic diagram of the shredding structure of the present invention from a first angle.

FIG. 14 is a second angle schematic diagram of the shredding structure of the present invention.

Figure numbers: 1. Crushing machine; 2. Conveyor belt structure Ⅰ; 3. Weighing structure; 301. Fixed support frame Ⅰ; 302. Screw moving mechanism Ⅰ; 303. Fixed block; 304. Weighing cylinder; 305. Servo motor Ⅰ; 306. Baffle; 4. Conveyor belt structure Ⅱ; 5. Modulation auxiliary structure; 501. Irregular support Ⅰ; 502. Screw moving mechanism Ⅱ; 503. Straight rack; 504. Cylindrical gear Ⅰ; 505. Control valve; 506. Storage barrel; 507. Round support plate; 508. Fixed long plate; 6. Melting extrusion cooling structure; 601. High temperature heating equipment; 602. Extrusion equipment; 603. Preliminary cooling equipment; 7. Cooling structure; 701. Cold water storage tank; 702. Fixed support; 703. Telescopic frame; 704. Square fixed plate; 705. Single-sided arc clamping plate Ⅰ; 706. Cylindrical gear Ⅱ ; 707, small cylindrical gear; 708, single-sided arc clamping plate Ⅱ; 709, servo motor Ⅱ; 710, long moving mechanism Ⅰ; 711, long moving mechanism Ⅱ; 712, collection box Ⅰ; 713, fixed support frame Ⅱ; 714, servo electric cylinder; 715, cutting blade; 716, irregular bracket Ⅱ; 717, rotating cylindrical barrel; 718, servo motor Ⅲ; 719, square frame plate; 720, rotating single plate Ⅰ; 721, cylindrical gear Ⅲ; 722, cylindrical gear Ⅳ; 723, rotating single plate Ⅱ; 8, shredding structure; 801, screw moving mechanism Ⅲ; 802, push plate; 803, fixed cylinder; 804, irregular plate; 805, pressing plate; 806, special-shaped bracket; 807, servo motor Ⅳ; 808, rotating blade Ⅰ; 809, rotating blade Ⅱ; 810, collection box Ⅱ; 811, long moving mechanism Ⅲ.

Detailed ways

Embodiment As shown in FIG. 1 to FIG. 14 , a device for making plastic particles from waste plastics comprises: a crushing machine 1, a conveyor belt structure I 2, a weighing structure 3, a conveyor belt structure II 4, a modulating auxiliary agent structure 5, a melting extrusion cooling structure 6, a cooling structure 7, and a shredding structure 8;

The outer frame of the shell of the crushing machine 1 is fixedly installed on the ground, the outlet of the crushing machine 1 is located above the conveyor belt structure Ⅰ2, and the frame of the conveyor belt structure Ⅰ2 is fixedly installed on the ground; the weighing structure 3 is fixedly installed on the ground, and a controller is fixedly installed on the weighing structure 3; the signal is received by the signal processor in the controller, and the electrical components of the equipment are controlled to operate in an orderly manner by the central processing unit in the controller; the weighing structure 3 is located below the outlet of the conveyor belt structure Ⅰ2, the weighing structure 3 is located above the conveyor belt structure Ⅱ4, and the frame of the conveyor belt structure Ⅱ4 is fixedly installed on the ground; the modulation auxiliary agent structure 5 is fixedly installed on the ground, the modulation auxiliary agent structure 5 is located above the high-temperature heating device 601 of the melting extrusion cooling structure 6, the melting extrusion cooling structure 6 is fixedly installed on the ground, and the outlet of the preliminary cooling device 603 of the melting extrusion cooling structure 6 is located in front of the cooling structure 7, and the cooling structure 7 is fixedly installed on the ground; the shredding structure 8 is fixedly installed on the ground, and the shredding structure 8 is located next to the melting extrusion cooling structure 6; the screened waste plastics are manually thrown into the crushing machine 1, and the waste plastics are crushed by the crushing machine 1 The broken waste plastic is transported to the weighing structure 3 through the conveyor belt structure Ⅰ2, and the waste plastic is weighed by the weighing structure 3. According to the weight obtained by weighing, the modulating auxiliary agent structure 5 can be controlled to prepare auxiliary agents of different weights; the weighed waste plastic is transported to the high-temperature heating device 601 of the melting, extruding and cooling structure 6 through the conveyor belt structure Ⅱ4 for heating, and at the same time, an appropriate amount of auxiliary agent is added through the modulating auxiliary agent structure 5, the auxiliary agent and the waste plastic are heated, and the heated solution is melted by the extrusion device 602 of the melting, extruding and cooling structure 6. The extruded material is in the form of multiple strips. When the strips move into the preliminary cooling device 603 of the melting, extruding and cooling structure 6, they are preliminarily cooled by the preliminary cooling device 603 of the melting, extruding and cooling structure 6, so as to facilitate cutting of the strips. When the strips move out of the melting, extruding and cooling structure 6 and move to the cooling structure 7, the strips are cut and cooled by the cooling structure 7, and the cut materials are then put into the shredding structure 8 by the cooling structure 7, and the cut materials are shredded into particles by the shredding structure 8, so as to complete the production of plastic particles.

The cooling structure 7 includes: a cold water storage tank 701, a taking mechanism, a cooling mechanism, and a cylinder transmission mechanism;

The cold water storage tank 701 is fixedly installed on the ground, and a water pipe is connected to the cold water storage tank 701, and the water pipe is connected to an external faucet; the taking mechanism is fixedly installed on the cold water storage tank 701, and the taking mechanism is located above the cooling mechanism, and the cooling mechanism is fixedly installed on the ground; the cylinder transmission mechanism is fixedly installed on the ground, and the cylinder transmission mechanism is located in front of the collection box I 712;

The shredding structure 8 includes: a screw moving mechanism III 801, a pushing plate 802, a fixed cylinder 803, an irregular plate 804, a pressing plate 805, a special-shaped bracket 806, a servo motor IV 807, a rotating blade I 808, a rotating blade II 809, a collecting box II 810, and a long moving mechanism III 811;

The lead screw moving mechanism III801 includes: a lead screw, a motor, a bracket, and a slider; the bracket is fixedly installed on the ground, a lead screw is rotatably installed on the bracket, the shaft of the lead screw is fixedly connected to the shaft of the motor fixedly installed on the bracket, the lead screw and the threaded hole of the slider are threadedly matched, the slider is slidably installed on the bracket, and the slider is fixedly connected to the push plate 802; the long moving mechanism III811 includes: a bracket, a limit rod; the bracket is fixedly installed on the ground, a limit rod is fixedly installed on the bracket, the limit rod is slidably connected to the slider, the slider is slidably installed on the bracket, and the slider is fixedly connected to the push plate 802 The frame of the fixed cylinder 803 is fixedly installed on the ground; there are multiple irregular plates 804, and the multiple irregular plates 804 are arranged in a circular array. A spring is fixedly installed at the rear end of each irregular plate 804, and the other end of the spring is fixedly connected to the inside of the fixed cylinder 803; there are multiple groups of pressing plates 805, and the multiple groups of pressing plates 805 are installed in a linear array inside the fixed cylinder 803, each group of pressing plates 805 has multiple pressing plates, and the multiple pressing plates 805 of each group are distributed in a circular array, and the rear ends of the multiple pressing plates 805 are fixedly installed with a spring, The other end of the spring is fixedly connected to the interior of the fixed cylinder 803; specifically, the motor of the screw moving mechanism III 801 drives the screw of the screw moving mechanism III 801 to rotate, thereby driving the slider of the screw moving mechanism III 801 to move, thereby driving the push plate 802 to push the strip material clamped by the single-sided arc clamping plate I 705 and the single-sided arc clamping plate II 708 to move, so that the strip material is inserted into the middle of the irregular plate 804, and the strip material is squeezed by the multiple groups of irregular plates 804 inside the fixed cylinder 803. When the strip material moves to the rotating blade II 8 09, the servo motor IV 807 drives the rotating blade II 809 to rotate, so that the 90 shredding structure 8 cuts the strip-shaped material to form plastic particles that fall into the collection box II 810 for easy manual collection; the special-shaped bracket 806 is fixedly installed on the ground, and the servo motor IV 807 is fixedly installed on the special-shaped bracket 806. The shaft of the servo motor IV 807 passes through the hole on the rotating blade I 808 and is fixedly connected to the rotating blade II 809, and the rotating blade I 808 is fixedly installed on the special-shaped bracket 806; the collection box II 810 is fixedly installed on the ground.

As shown in FIG3 and FIG4 , the weighing structure 3 includes: a fixed support frame I 301 , a lead screw moving mechanism I 302 , a fixed block 303 , a weighing cylinder 304 , a servo motor I 305 , and a baffle 306 ;

The fixed support frame Ⅰ301 is fixedly installed on the ground, a rod is fixedly installed on the upper end surface of the fixed support frame Ⅰ301, a spring is fixedly installed on the upper end surface of the fixed support frame Ⅰ301, the other end of the spring is fixedly connected to the lower end surface of the weighing cylinder 304, the side surface of the weighing cylinder 304 is fixedly connected to the fixed block 303, a slide groove is provided on the fixed block 303, the slide groove and the rod on the upper end surface of the fixed support frame Ⅰ301 are slidably matched, and an induction receiver is fixedly installed on the lower end surface of the fixed block 303; the screw moving mechanism Ⅰ302 includes: a screw, a motor, a bracket, and a slider; the bracket is fixedly installed on the fixed support frame Ⅰ301, and a screw is rotatably installed on the bracket, The shaft of the lead screw is fixedly connected to the shaft of the motor fixedly mounted on the bracket, the lead screw is threadedly matched with the threaded hole of the slider, the slider is slidably mounted on the bracket, and an induction signal transmitter is provided on the slider; specifically, in order to control the weight of the waste plastic, the motor of the lead screw moving mechanism Ⅰ302 drives the lead screw of the lead screw moving mechanism Ⅰ302 to rotate, thereby driving the slider of the lead screw moving mechanism Ⅰ302 to move downward, and when the slider of the lead screw moving mechanism Ⅰ302 moves to a suitable position, the motor of the lead screw moving mechanism Ⅰ302 stops working; the servo motor Ⅰ305 is fixedly mounted on the weighing cylinder 304, and the shaft of the servo motor Ⅰ305 is fixedly connected to the baffle 306.

As shown in FIG. 5 and FIG. 6 , the preparation auxiliary agent structure 5 includes: an irregular bracket I 501 , a starting mechanism, and an auxiliary agent storage mechanism;

The irregular bracket Ⅰ501 is fixedly installed on the ground; there are three groups of starting mechanisms, which are distributed in a circular array and fixedly installed on the irregular bracket Ⅰ501 respectively, and the spur rack 503 of each group of starting mechanisms intermittently cooperates with the three cylindrical gears Ⅰ504 of the three groups of storage auxiliary agent mechanisms on the same side respectively; there are three groups of storage auxiliary agent mechanisms, which are distributed in a linear array, and the storage auxiliary agent mechanism at the top position is connected to the storage barrel 506 of the storage auxiliary agent mechanism at the middle position, and the circular support plates 507 of the three groups of storage auxiliary agent mechanisms are fixedly connected respectively, among which the circular support plate 507 of the storage auxiliary agent mechanism at the top is fixedly installed on the irregular bracket Ⅰ501; the switch of the storage auxiliary agent mechanism is turned on by the starting mechanism, so that the auxiliary agent flows into the high-temperature heating device 601 of the melting, extrusion and cooling structure 6.

As shown in FIG. 5 and FIG. 6 , the starting mechanism includes: a screw moving mechanism II 502 , a spur rack 503 , and a fixed long plate 508 ;

The lead screw moving mechanism II 502 includes: a lead screw, a motor, a bracket, and a slider; the bracket is fixedly mounted on the irregular bracket I 501, a lead screw is rotatably mounted on the bracket, the shaft of the lead screw is fixedly connected to the shaft of the motor fixedly mounted on the bracket, the lead screw and the threaded hole of the slider are threadedly matched, the slider is slidably mounted on the bracket, the slider is fixedly connected to the spur rack 503, the spur rack 503 and the cylindrical gear I 504 are meshed with each other; the fixed long plate 508 is fixedly mounted on the bracket of the lead screw moving mechanism II 502.

As shown in FIG. 5 and FIG. 6 , the storage auxiliary agent mechanism includes: a cylindrical gear I 504 , a control valve 505 , a storage barrel 506 , and a circular support plate 507 ;

There are three storage barrels 506, and a control valve 505 is fixedly installed at the lower end outlet of each of the three storage barrels 506. The three storage barrels 506 are respectively fixedly installed on a circular support plate 507, and the circular support plate 507 is fixedly installed on an irregular bracket Ⅰ501; a pulley is fixedly installed on each control valve 505, and the pulley and the pulley fixedly installed on the end face of the cylindrical gear Ⅰ504 are connected by a belt; there are three cylindrical gears Ⅰ504, and the three cylindrical gears Ⅰ504 are distributed in a circular array, and the three cylindrical gears Ⅰ504 are respectively rotatably installed on a fixed long plate 508 on the same side.

As shown in FIG. 1 and FIG. 2 , the melting extrusion cooling structure 6 includes: a high temperature heating device 601 , an extrusion device 602 , and a preliminary cooling device 603 ;

The high-temperature heating device 601 is fixedly installed on the ground, and the outlet of the high-temperature heating device 601 is connected to the inlet of the extrusion device 602. The extrusion device 602 is fixedly installed on the ground, and the outlet of the extrusion device 602 is connected to the inlet of the preliminary cooling device 603. The preliminary cooling device 603 is fixedly installed on the ground. Specifically, the high-temperature heating device 601 is used to heat and melt the material, and then the extrusion device 602 is used to extrude the melted material into multiple strips of material. The multiple strips of material pass through the preliminary cooling device 603 as they are extruded, and are preliminarily cooled by the preliminary cooling device 603.

As shown in FIGS. 7 to 12 , the taking mechanism includes: a fixed bracket 702 , a telescopic bracket 703 , a square fixed plate 704 , a single-sided arc-shaped clamping plate I 705 , a cylindrical gear II 706 , a small cylindrical gear 707 , a single-sided arc-shaped clamping plate II 708 , and a servo motor II 709 ;

One end of the fixed bracket 702 is fixedly installed on the cold water storage tank 701, and the other end of the fixed bracket 702 is fixedly connected to the upper end surface of the square fixed plate 704; the single-sided arc clamping plate I 705 is rotatably installed on the side of the square fixed plate 704, the single-sided arc clamping plate I 705 and the shaft of the cylindrical gear II 706 are fixedly connected, the cylindrical gear II 706 and the small cylindrical gear 707 are meshed with each other, the small cylindrical gear 707 is rotatably installed on the side of the square fixed plate 704, the small cylindrical gear 707 is connected to the single-sided arc clamping plate II 708 through a belt and a pulley, and the single-sided arc clamping plate II 708 is rotatably installed on the side of the square fixed plate 704; the servo motor II 709 is fixedly installed on the side of the square fixed plate 704, and the shaft of the servo motor II 709 and the shaft of the small cylindrical gear 707 are fixedly connected.

As shown in FIGS. 7 to 12 , the cooling mechanism includes: a long moving mechanism I 710, a long moving mechanism II 711, a collecting box I 712, a fixed support frame II 713, a servo electric cylinder 714, a cutting blade 715, a square frame plate 719, a rotating single plate I 720, a cylindrical gear III 721, a cylindrical gear IV 722, and a rotating single plate II 723;

The long moving mechanism Ⅰ710 includes: a lead screw, a motor, a bracket, and a slider; the bracket is fixedly installed on the ground, a lead screw is rotatably installed on the bracket, the shaft of the lead screw is fixedly connected to the shaft of the motor fixedly installed on the bracket, the lead screw and the threaded hole of the slider are threadedly matched, the slider is slidably installed on the bracket, the slider is fixedly connected to the side of the collection box Ⅰ712, and the collection box Ⅰ712 is provided with many holes, the holes can allow cold water to enter the collection box Ⅰ712, so that the long strip material inside the collection box Ⅰ712 is cooled; the long moving mechanism Ⅱ711 includes: a bracket, a limit rod; the bracket is fixedly installed on the ground The support frame Ⅱ713 is fixedly installed on the ground, and the lower end face of the fixed support frame Ⅱ713 is fixedly installed with the end face of the servo electric cylinder 714, and the telescopic rod end of the servo electric cylinder 714 is fixedly connected with the cutting blade 715; the square frame plate 719 is fixedly installed on the ground, and the side face of the square frame plate 719 is rotatably installed with a cylindrical gear Ⅲ721, and the cylindrical gear Ⅲ721 and the cylindrical gear Ⅳ722 are mutually rotated. The cylindrical gear III 721 is meshed, and the shaft of the rotating single plate I 720 is fixedly connected. The rotating single plate I 720 is rotatably mounted on the square frame plate 719; the rotating single plate II 723 is rotatably mounted on the square frame plate 719, and the shaft at one end of the rotating single plate II 723 is connected to the cylindrical gear IV 722 through a belt and a pulley, and the shaft at the other end of the rotating single plate II 723 is fixedly connected to the shaft of the motor fixedly mounted on the square frame plate 719. Specifically, the motor of the long moving mechanism I 710 drives the lead screw of the long moving mechanism I 710 to rotate, thereby driving the long moving mechanism I The slider of 710 moves, thereby driving the collection box I 712 to move to the bottom of the telescopic frame 703; the telescopic frame 703 descends to make the single-sided arc clamping plate I 705 and the single-sided arc clamping plate II 708 close to the strip material inside the servo electric cylinder 714, and then the servo motor II 709 drives the small cylindrical gear 707 to rotate, thereby driving the cylindrical gear II 706 and the single-sided arc clamping plate II 708 to rotate, thereby driving the single-sided arc clamping plate I 705 to rotate, and then the single-sided arc clamping plate I 705 and the single-sided arc clamping plate II 708 clamp the strip material inside the servo electric cylinder 714.

As shown in Fig. 7 to Fig. 12, the cylinder transmission mechanism includes: an irregular bracket II 716, a rotating cylinder 717, and a servo motor III 718;

The irregular bracket Ⅱ716 is fixedly installed on the ground, and a servo motor Ⅲ718 is fixedly installed on the irregular bracket Ⅱ716; there are four rotating cylindrical barrels 717, and the four rotating cylindrical barrels 717 are respectively connected by belts and pulleys. The four rotating cylindrical barrels 717 are respectively rotatably installed on the irregular bracket Ⅱ716, and the shaft of one of the rotating cylindrical barrels 717 is fixedly connected to the shaft of the servo motor Ⅲ718.

working principle:

First, in order to control the weight of the waste plastic, the motor of the screw moving mechanism Ⅰ302 drives the screw of the screw moving mechanism Ⅰ302 to rotate, thereby driving the slider of the screw moving mechanism Ⅰ302 to move downward. When the slider of the screw moving mechanism Ⅰ302 moves to a suitable position, the motor of the screw moving mechanism Ⅰ302 stops working;

The screened waste plastics are manually thrown into the crushing machine 1, and the crushing machine 1 crushes the waste plastics, and the crushed waste plastics fall onto the belt of the conveyor belt structure Ⅰ2, and the crushed waste plastics are transmitted to the inside of the weighing cylinder 304 through the conveyor belt structure Ⅰ2. As the weight inside the weighing cylinder 304 gradually increases, the weighing cylinder 304 will press down the spring on the fixed support frame Ⅰ301; the screw moving mechanism Ⅰ302 has three gears, when the first gear is set, only the additives in the bottom storage barrel 506 can flow out; when the second gear is set, only the additives in the bottom storage barrel 506 and the additives in the middle storage barrel 506 can flow out; when the third gear is set, the additives in the three storage barrels 506 can flow out;

When the inductive receiver on the fixed block 303 touches the inductive transmitter on the slider of the screw moving mechanism Ⅰ302, the inductive transmitter on the screw moving mechanism Ⅰ302 transmits a signal to the servo motor Ⅰ305, and then the servo motor Ⅰ305 starts to work and drives the baffle 306 to rotate, thereby opening the outlet of the weighing cylinder 304, so that the broken waste plastic inside the weighing cylinder 304 flows out to the conveyor belt structure Ⅱ4;

At the same time, at this moment, when the weight of the weighing cylinder 304 is at the first gear, the controller starts the motor of one of the screw moving mechanisms II502, and the motor of the screw moving mechanism II502 drives the screw of the screw moving mechanism II502 to rotate, thereby driving the slider of the screw moving mechanism II502 to move, and then driving the spur rack 503 to move, thereby driving the cylindrical gear I504 at the bottom to rotate, thereby driving the control valve 505 at the bottom to open, so that the storage barrel 506 at the bottom is opened, and the corresponding auxiliary agent can flow out of the storage barrel 506 at the bottom; when the weighing cylinder 304 is at the first gear, the controller starts the motor of the screw moving mechanism II502, and drives the screw of the screw moving mechanism II502 to rotate, thereby driving the slider of the screw moving mechanism II502 to move, thereby driving the spur rack 503 to move, thereby driving the cylindrical gear I504 at the bottom to rotate, thereby driving the control valve 505 at the bottom to open, so that the storage barrel 506 at the bottom is opened, and the corresponding auxiliary agent can flow out of the storage barrel 506; when the weighing cylinder 304 is at the first gear, the controller starts the motor of the screw moving mechanism II502, and drives the slider of the screw moving mechanism II502 to move, thereby driving ... When the weight of the cylinder 304 is at the second gear, the controller starts the motor of one of the screw moving mechanisms II502, and the motor of the screw moving mechanism II502 drives the screw of the screw moving mechanism II502 to rotate, thereby driving the slider of the screw moving mechanism II502 to move, and then driving the spur rack 503 to move, thereby driving the cylindrical gear I504 at the bottom to rotate, and the motor of the screw moving mechanism II502 drives the screw of the screw moving mechanism II502 to rotate, thereby driving the slider of the screw moving mechanism II502 to move, and then driving the spur rack 503 to move the belt The cylindrical gear I504 at the middle position is driven to rotate, thereby driving the control valve 505 at the bottom and the control valve 505 at the middle position to open, so that the storage barrels 506 at the bottom and the middle position are opened, and the auxiliary agent can flow out of the storage barrel 506 at the bottom; when the weight of the weighing cylinder 304 is at the third gear, the controller starts the motor of one of the screw moving mechanisms II502, and the motor of the screw moving mechanism II502 drives the screw of the screw moving mechanism II502 to rotate, thereby driving the slider of the screw moving mechanism II502 to move, and then driving the spur rack 5 03 moves, thereby driving the cylindrical gear I 504 at the bottom to rotate, and the motor of the screw moving mechanism II 502 drives the screw of the screw moving mechanism II 502 to rotate, thereby driving the slider of the screw moving mechanism II 502 to continue to move, and then driving the spur rack 503 to move and drive the cylindrical gear I 504 at the middle position and the top to rotate, thereby driving the control valve 505 at the bottom and the control valve 505 at the middle position and the top to open, so that the storage barrel 506 at the bottom, the middle position and the top is opened, so that the auxiliary agent can flow out of the storage barrel 506 at the bottom;

When the additives in the three storage barrels 506 of one group are used up, the three storage barrels 506 of another group are opened to add additives to the three storage barrels 506 of the other group, until the additives in the three groups of storage barrels 506 are all used up, and then the additives are added to the multiple storage barrels 506 manually;

After the broken waste plastics and additives flow into the high temperature heating device 601, they are heated and melted by the high temperature heating device 601, and then the melted materials are squeezed out into multiple strips by the extrusion device 602. The multiple strips of materials move through the preliminary cooling device 603 as they are extruded, and are preliminarily cooled by the preliminary cooling device 603;

After the strip material is initially cooled, it moves to the rotating cylinder 717, and then the servo motor III 718 drives the rotating cylinder 717 to rotate, which in turn drives the belt and the pulley to rotate, thereby driving the other rotating cylinders 717 to rotate, so that the rotating cylinder 717 drives the strip material to move to the rotating single plate I 720 and the rotating single plate II 723;

After the strip material is spread on the rotating single plate Ⅰ 720 and the rotating single plate Ⅱ 723, the cutting blade 715 is driven down by the extension and contraction of the servo electric cylinder 714, so that the cutting blade 715 cuts the strip material. At this moment, the rotating single plate Ⅱ 723 is turned over by the motor on the square frame plate 719, and the cylindrical gear Ⅳ 722 is driven to rotate, and the cylindrical gear Ⅲ 721 is driven to rotate, so that the rotating single plate Ⅰ 720 is turned over, and the cut strip material falls into the collection box Ⅰ 712.

Since cold water is stored in the cold water storage tank 701, the cut strips are immersed in the cold water for cooling. The above-mentioned operation of cutting the strips and dropping the strips into the servo electric cylinder 714 is repeated several times until the strips in the collecting box I 712 reach a certain amount.

The motor of the long moving mechanism Ⅰ710 drives the lead screw of the long moving mechanism Ⅰ710 to rotate, and then drives the slider of the long moving mechanism Ⅰ710 to move, thereby driving the collection box Ⅰ712 to move to the bottom of the telescopic frame 703; the telescopic frame 703 is lowered to make the single-sided arc clamping plate Ⅰ705 and the single-sided arc clamping plate Ⅱ708 close to the strip material inside the servo electric cylinder 714, and then the servo motor Ⅱ709 drives the small cylindrical gear 707 to rotate, and then drives the cylindrical gear Ⅱ706 and the single-sided arc clamping plate Ⅱ708 to rotate, thereby driving the single-sided arc clamping plate Ⅰ705 to rotate, and then the single-sided arc clamping plate Ⅰ705 and the single-sided arc clamping plate Ⅱ708 clamp the strip material inside the servo electric cylinder 714; and then The motor of the screw moving mechanism III801 drives the screw of the screw moving mechanism III801 to rotate, thereby driving the slider of the screw moving mechanism III801 to move, thereby driving the pushing plate 802 to push the strip material clamped by the single-sided arc clamping plate I705 and the single-sided arc clamping plate II708 to move, so that the strip material is inserted into the middle of the irregular plate 804, and the strip material is squeezed by the multiple groups of irregular plates 804 inside the fixed cylinder 803. When the strip material moves to the position of the rotating blade II809, the rotating blade II809 is driven to rotate by the servo motor IV807, so that the 90 shredding structure 8 cuts the strip material, forming plastic particles that fall into the collection box II810 for easy manual collection.

Claims (9)

1. An apparatus for producing plastic granules from waste plastic, comprising: the device comprises a pulper (1), a conveyor belt structure I (2), a weighing structure (3), a conveyor belt structure II (4), a modulation auxiliary agent structure (5), a melting extrusion cooling structure (6), a cooling structure (7) and a shredding structure (8);

the outer side frame of the shell of the pulper (1) is fixedly arranged on the ground, the outlet of the pulper (1) is positioned above the conveying belt structure I (2), and the frame of the conveying belt structure I (2) is fixedly arranged on the ground; the weighing structure (3) is fixedly arranged on the ground, and the controller is fixedly arranged on the weighing structure (3); the signal processor in the controller receives the signals, and the central processing unit in the controller controls the power utilization elements of the equipment to orderly operate; the weighing structure (3) is positioned below an outlet of the conveying belt structure I (2), the weighing structure (3) is positioned above the conveying belt structure II (4), and a frame of the conveying belt structure II (4) is fixedly arranged on the ground; the preparation auxiliary agent structure (5) is fixedly arranged on the ground, the preparation auxiliary agent structure (5) is positioned above the high-temperature heating equipment (601) for melting the extrusion cooling structure (6), the melting extrusion cooling structure (6) is fixedly arranged on the ground, an outlet of the preliminary cooling equipment (603) for melting the extrusion cooling structure (6) is positioned at the front position of the cooling structure (7), and the cooling structure (7) is fixedly arranged on the ground; the shredding structure (8) is fixedly arranged on the ground, and the shredding structure (8) is positioned beside the melting extrusion cooling structure (6);

The cooling structure (7) comprises: a cold water storage tank (701), a taking mechanism, a cooling mechanism and a cylinder transmission mechanism;

the cold water storage tank (701) is fixedly arranged on the ground, the cold water storage tank (701) is connected with a water pipe, and the water pipe is connected with an external faucet; the taking mechanism is fixedly arranged on the cold water storage tank (701), the taking mechanism is positioned above the cooling mechanism, and the cooling mechanism is fixedly arranged on the ground; the cylinder transmission mechanism is fixedly arranged on the ground and is positioned in front of the collecting box I (712);

the shredding structure (8) comprises: screw rod moving mechanism III (801), pushing plate (802), fixed cylinder (803), irregular plate (804), pressing plate (805), special-shaped bracket (806), servo motor IV (807), rotating blade I (808), rotating blade II (809), collecting box II (810) and long moving mechanism III (811);

the screw rod moving mechanism III (801) comprises: the device comprises a screw rod, a motor, a bracket and a sliding block; the support is fixedly arranged on the ground, the support is rotatably provided with a screw rod, the shaft of the screw rod is fixedly connected with the shaft of the motor fixedly arranged on the support, the screw rod is in threaded fit with a threaded hole of the sliding block, the sliding block is slidably arranged on the support, and the sliding block is fixedly connected with the pushing plate (802); the long moving mechanism III (811) includes: a bracket and a limiting rod; the support is fixedly arranged on the ground, the support is fixedly provided with a limiting rod, the limiting rod is in sliding connection with the sliding block, the sliding block is slidably arranged on the support, and the sliding block is fixedly connected with the pushing plate (802); the frame of the fixed cylinder (803) is fixedly arranged on the ground; the plurality of irregular plates (804) are arranged, the plurality of irregular plates (804) are respectively in a circumferential array, a spring is fixedly arranged at the rear end of each irregular plate (804), and the other end of the spring is fixedly connected with the inside of the fixed cylinder (803); the pressing plates (805) are in multiple groups, the pressing plates (805) are arranged in the fixed cylinder (803) in a linear array, the pressing plates (805) in each group are in multiple groups, the pressing plates (805) in each group are distributed in a circumferential array, the rear ends of the pressing plates (805) are fixedly provided with springs, and the other ends of the springs are fixedly connected with the inside of the fixed cylinder (803); the special-shaped bracket (806) is fixedly arranged on the ground, a servo motor IV (807) is fixedly arranged on the special-shaped bracket (806), a shaft of the servo motor IV (807) passes through a hole on a rotary blade I (808) to be fixedly connected with a rotary blade II (809), and the rotary blade I (808) is fixedly arranged on the special-shaped bracket (806); the collecting box II (810) is fixedly arranged on the ground.

2. An apparatus for producing plastic granules from waste plastic according to claim 1, characterized in that said weighing structure (3) comprises: a fixed support frame I (301), a screw rod moving mechanism I (302), a fixed block (303), a weighing cylinder (304), a servo motor I (305) and a baffle plate (306);

the fixed support frame I (301) is fixedly arranged on the ground, a rod is fixedly arranged on the upper end face of the fixed support frame I (301), a spring is fixedly arranged on the upper end face of the fixed support frame I (301), the other end of the spring is fixedly connected with the lower end face of the weighing cylinder (304), the side face of the weighing cylinder (304) is fixedly connected with the fixed block (303), a sliding groove is formed in the fixed block (303), the sliding groove is in sliding fit with the rod on the upper end face of the fixed support frame I (301), and an induction receiver is fixedly arranged on the lower end face of the fixed block (303); the screw moving mechanism I (302) includes: the device comprises a screw rod, a motor, a bracket and a sliding block; the bracket is fixedly arranged on a fixed support frame I (301), a screw rod is rotatably arranged on the bracket, the shaft of the screw rod is fixedly connected with the shaft of a motor fixedly arranged on the bracket, the screw rod is in threaded fit with a threaded hole of the sliding block, the sliding block is slidably arranged on the bracket, and an induction signal emitter is arranged on the sliding block; the servo motor I (305) is fixedly arranged on the weighing cylinder (304), and the shaft of the servo motor I (305) is fixedly connected with the baffle plate (306).

3. An apparatus for producing plastic granules from waste plastic according to claim 1, characterized in that said modulation aid structure (5) comprises: the device comprises an irregular bracket I (501), a starting mechanism and an auxiliary agent storing mechanism;

the irregular bracket I (501) is fixedly arranged on the ground; the starting mechanisms are in three groups, the three groups of starting mechanisms are distributed in a circumferential array, the three groups of starting mechanisms are respectively and fixedly arranged on the irregular bracket I (501), and straight racks (503) of each group of starting mechanisms are respectively and intermittently matched with three cylindrical gears I (504) of three groups of auxiliary agent storage mechanisms on the same side; the storage auxiliary agent mechanisms are in three groups, the three groups of storage auxiliary agent mechanisms are distributed in a linear array, the storage auxiliary agent mechanism at the uppermost position is connected with the storage barrel (506) of the storage auxiliary agent mechanism at the middle position, the round support plates (507) of the three groups of storage auxiliary agent mechanisms are respectively and fixedly connected, and the round support plates (507) of the uppermost storage auxiliary agent mechanism are fixedly arranged on the irregular support frame I (501).

4. An apparatus for producing plastic granules from waste plastic as claimed in claim 3, wherein said actuating mechanism comprises: a screw rod moving mechanism II (502), a straight rack (503) and a fixed long plate (508);

The screw rod moving mechanism II (502) comprises: the device comprises a screw rod, a motor, a bracket and a sliding block; the support is fixedly arranged on an irregular support I (501), a screw rod is rotatably arranged on the support, the shaft of the screw rod is fixedly connected with the shaft of a motor fixedly arranged on the support, the screw rod is in threaded fit with a threaded hole of a sliding block, the sliding block is slidably arranged on the support, the sliding block is fixedly connected with a straight rack (503), and the straight rack (503) and a cylindrical gear I (504) are meshed with each other; the fixed long plate (508) is fixedly arranged on a bracket of the screw rod moving mechanism II (502).

5. An apparatus for producing plastic granules from waste plastic as claimed in claim 3, wherein said storage aid means comprises: the cylindrical gear I (504), the control valve (505), the storage barrel (506) and the circular support plate (507);

the three storage barrels (506) are fixedly arranged at the outlets of the lower ends of the three storage barrels (506), a control valve (505) is fixedly arranged at the outlets of the lower ends of the three storage barrels (506), the three storage barrels (506) are fixedly arranged on round support plates (507) respectively, and the round support plates (507) are fixedly arranged on an irregular support I (501); each control valve (505) is fixedly provided with a belt pulley, and the belt pulleys are connected with the belt pulley fixedly arranged on the end face of the cylindrical gear I (504) through a belt; the cylindrical gears I (504) are three, the three cylindrical gears I (504) are distributed in a circumferential array, and the three cylindrical gears I (504) are respectively and rotatably arranged on a fixed long plate (508) on the same side.

6. An apparatus for producing plastic granules from waste plastic according to claim 1, characterized in that said melt extrusion cooling structure (6) comprises: a high-temperature heating device (601), an extrusion device (602), and a preliminary cooling device (603);

the high-temperature heating device (601) is fixedly arranged on the ground, an outlet of the high-temperature heating device (601) is connected with an inlet of the extrusion device (602), the extrusion device (602) is fixedly arranged on the ground, an outlet of the extrusion device (602) is connected with an inlet of the primary cooling device (603), and the primary cooling device (603) is fixedly arranged on the ground.

7. The apparatus for producing plastic granules from waste plastic as claimed in claim 1, wherein said picking mechanism comprises: the device comprises a fixed bracket (702), a telescopic bracket (703), a square fixed plate (704), a single-sided arc clamping plate I (705), a cylindrical gear II (706), a small cylindrical gear (707), a single-sided arc clamping plate II (708) and a servo motor II (709);

one end of the fixed bracket (702) is fixedly arranged on the cold water storage tank (701), and the other end of the fixed bracket (702) is fixedly connected with the upper end surface of the square fixed plate (704); the single-sided arc clamping plate I (705) is rotatably arranged on the side surface of the square fixing plate (704), the single-sided arc clamping plate I (705) is fixedly connected with the shaft of the cylindrical gear II (706), the cylindrical gear II (706) is meshed with the small cylindrical gear (707), the small cylindrical gear (707) is rotatably arranged on the side surface of the square fixing plate (704), the small cylindrical gear (707) is connected with the single-sided arc clamping plate II (708) through a belt and a belt pulley, and the single-sided arc clamping plate II (708) is rotatably arranged on the side surface of the square fixing plate (704); the servo motor II (709) is fixedly arranged on the side surface of the square fixing plate (704), and the shaft of the servo motor II (709) is fixedly connected with the shaft of the small cylindrical gear (707).

8. The apparatus for producing plastic granules from waste plastic as claimed in claim 1, wherein said cooling mechanism comprises: the device comprises a long moving mechanism I (710), a long moving mechanism II (711), a collecting box I (712), a fixed support frame II (713), a servo electric cylinder (714), a cutting blade (715), a square frame plate (719), a rotary single plate I (720), a cylindrical gear III (721), a cylindrical gear IV (722) and a rotary single plate II (723);

the long moving mechanism I (710) comprises: the device comprises a screw rod, a motor, a bracket and a sliding block; the support is fixedly arranged on the ground, the support is rotatably provided with a screw rod, the shaft of the screw rod is fixedly connected with the shaft of the motor fixedly arranged on the support, the screw rod is in threaded fit with a threaded hole of the sliding block, the sliding block is slidably arranged on the support, and the sliding block is fixedly connected with the side face of the collecting box I (712); the long movement mechanism II (711) includes: a bracket and a limiting rod; the support is fixedly arranged on the ground, the support is fixedly provided with a limiting rod, the limiting rod is in sliding connection with the sliding block, the sliding block is slidably arranged on the support, and the sliding block is fixedly connected with the side face of the collecting box I (712); the fixed support frame II (713) is fixedly arranged on the ground, the end face of the servo electric cylinder (714) is fixedly arranged on the lower end face of the fixed support frame II (713), and the telescopic rod end of the servo electric cylinder (714) is fixedly connected with the cutting blade (715); the square frame plate (719) is fixedly arranged on the ground, a cylindrical gear III (721) is rotatably arranged on the side surface of the square frame plate (719), the cylindrical gear III (721) is meshed with a cylindrical gear IV (722), the cylindrical gear III (721) is fixedly connected with a shaft of the rotary single plate I (720), and the rotary single plate I (720) is rotatably arranged on the square frame plate (719); the rotary single plate II (723) is rotatably arranged on the square frame plate (719), a shaft at one end of the rotary single plate II (723) is connected with the cylindrical gear IV (722) through a belt and a belt pulley, and a shaft at the other end of the rotary single plate II (723) is fixedly connected with a shaft of a motor fixedly arranged on the square frame plate (719).

9. The apparatus for producing plastic granules from waste plastic as claimed in claim 1, wherein said cylinder driving mechanism comprises: an irregular bracket II (716), a rotary cylinder (717) and a servo motor III (718);

the irregular bracket II (716) is fixedly arranged on the ground, and the irregular bracket II (716) is fixedly provided with a servo motor III (718); the four rotating cylinder drums (717) are respectively connected with the belt pulley through the belt, the four rotating cylinder drums (717) are respectively and rotatably arranged on the irregular bracket II (716), and the shaft of one rotating cylinder drum (717) is fixedly connected with the shaft of the servo motor III (718).