Polyethylene particle processing granulator

Abstract

The utility model discloses a polyethylene particle processing granulator, which belongs to the technical field of polyethylene particle processing, and comprises a base, the top of the base is fixedly connected with two support frames, the interiors of the two support frames are fixedly connected with a sleeve, the top of the sleeve is fixedly connected with a feed hopper, the sleeve is hollow, and the feed hopper is provided with a feed port. A discharging port is fixedly connected to the end of the sleeve, the discharging port is of a conical structure, a through hole is formed in the outer surface of the discharging port, by introducing a cutting assembly driven by a second motor, automatic cutting of polyethylene particles is achieved, the second motor can accurately control the rotation amplitude and direction, and the cutting efficiency is improved. Therefore, it is ensured that the particles can be evenly and stably cut off in the moving process of the scraping plate, the problem that the lengths are inconsistent possibly occurring in the manual cutting process is solved, the production efficiency is improved, and the risks of mold blockage and damage caused by the inconsistent lengths of the particles are remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of polyethylene granule processing technology, and more specifically, to a polyethylene granule processing pelletizer. Background Technology

[0002] Polyethylene granules are a thermoplastic resin obtained by polymerizing ethylene. Industrially, it also includes copolymers of ethylene with small amounts of α-olefins. Polyethylene is odorless, non-toxic, and has a waxy feel. It has excellent low-temperature resistance (minimum operating temperature can reach -70 to -100℃, and some sources say it can still maintain good mechanical properties at -60℃), good chemical stability, and can withstand the corrosion of most acids and alkalis (but not oxidizing acids).

[0003] Patent CN217288320U discloses a granulation device for producing ultrafine polyethylene wax powder, relating to the field of polyethylene wax technology and the field of granulation devices for ultrafine polyethylene wax powder. The device includes a powder processing chamber. Crushing blade shafts are mounted on both sides of the inner front and rear surfaces of the powder processing chamber near the center via rotating shafts. A limiting discharge plate is located at the bottom of the powder processing chamber, and a powder granulation mechanism is located at the bottom of the limiting discharge plate. The powder granulation mechanism includes a square funnel shell. The rotating crushing blade shafts break up large clumps of material within the raw material, preventing these clumps from affecting the granulation process. The fully refined material, during processing, reduces the gaps between particles, increasing the conversion speed and quality of the ultrafine powder to particle size, thus improving the device's practicality.

[0004] Although the device has many beneficial effects, the following problems still exist: Although the granulation device can increase the conversion speed and quality of ultrafine powder to granules and improve the practicality of the device, in the traditional process, after the granules are extruded, they need to be cut manually with a scraper. This cannot ensure that the granules are of consistent length. Inconsistent granule length can easily cause mold blockage or even damage to the mold, because granules of different lengths may cause uneven wear and impact on the mold during the injection molding process. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a polyethylene pelletizing machine, which solves the aforementioned problems.

[0007] (II) Technical Solution

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a polyethylene pellet processing and granulation machine, comprising a base, two support frames fixedly connected to the top of the base, sleeves fixedly connected inside the two support frames, a feed hopper fixedly connected to the top of the sleeves, the sleeves being hollow, a discharge port fixedly connected to the end of the sleeves, the discharge port being conical in shape, a through hole formed on the outer surface of the discharge port, a material carrier slidably mounted on the top of the base, the material carrier being located below the discharge port, and further comprising:

[0009] A cutting assembly, located on the outer surface of the through hole, is used to cut the extruded polyethylene granules;

[0010] The extrusion assembly, located inside the sleeve, is used to extrude polyethylene granules.

[0011] Preferably, the cutting assembly includes a scraper, a mounting box, a second motor, a fixing block, gears, cams, and a connecting column. Two symmetrically distributed mounting brackets are fixedly connected to the top of the base, and a mounting box is fixedly connected between the two mounting brackets. A fixing block is fixedly connected to the bottom inner wall of the mounting box, and a second motor is fixedly installed on the bottom inner wall of the mounting box. Two gears are rotatably connected to the fixing block away from the outer surface of the second motor, and the two gears are meshed. The output end of the second motor passes through the fixing block and is fixedly connected to the adjacent gear. A rotating shaft is fixedly connected inside the other gear, and two symmetrically distributed cams are fixedly connected to the outer surface of the rotating shaft.

[0012] Preferably, the cutting assembly further includes a scraper, connecting posts, and springs. Two connecting posts are movably connected to the bottom of the mounting box. Springs are elastically connected to the outer surface of the upper side of the inner wall of the bottom of the mounting box. Two cams are in movable contact with the top of the corresponding connecting posts. Scrapers are fixedly connected to the bottom of the two connecting posts.

[0013] Preferably, a connecting frame is fixedly connected to the bottom of each of the two mounting brackets, and a limiting groove is formed on the outer surface of each of the two connecting brackets that are close to each other. A limiting block is fixedly connected to both outer surfaces of the scraper, and the two limiting blocks are slidably connected to the corresponding limiting groove.

[0014] Preferably, the extrusion assembly includes a first motor, a connecting shaft, and auger blades. The connecting shaft is rotatably connected inside the sleeve, and the auger blades are fixedly installed on the outer surface of the connecting shaft. The first motor is fixedly installed on the top of the base, and the output end of the first motor is fixedly connected to the connecting shaft.

[0015] Preferably, the extrusion granulation assembly further includes a temperature sensor and a heating tube. The heating tube is fixedly installed inside the sleeve and is arranged in a spiral pattern. The temperature sensor is fixedly installed on the outer surface of the sleeve and is electrically connected to the heating tube.

[0016] Preferably, a PLC controller is fixedly installed on the outer surface of the sleeve. The PLC controller is electrically connected to the temperature sensor and the temperature sensor is controlled by the PLC controller. Both the first motor and the second motor are controlled by the PLC controller.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a polyethylene pelletizing machine, which has the following beneficial effects:

[0019] 1. This polyethylene granule processing and pelletizing machine achieves automated cutting of polyethylene granules by introducing a cutting component driven by a second motor. The second motor can precisely control the rotation amplitude and direction, thereby ensuring that the scraper can cut the granules evenly and stably during the movement process, avoiding the problem of inconsistent lengths that may occur when cutting manually. This not only improves production efficiency, but also significantly reduces the risk of mold blockage and damage caused by inconsistent granule lengths. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0022] Figure 3 This is a schematic diagram of the cam structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the sleeve of this utility model;

[0024] Figure 5 This is a schematic diagram of the heating tube structure of this utility model.

[0025] In the diagram: 1. Base; 2. Support frame; 3. Sleeve; 4. Feed hopper; 5. First motor; 6. Temperature sensor; 7. PLC controller; 8. Discharge port; 9. Scraper; 10. Through hole; 11. Mounting box; 12. Second motor; 13. Connecting frame; 14. Limiting groove; 15. Limiting block; 16. Fixing block; 17. Gear; 18. Cam; 19. Connecting column; 20. Connecting shaft; 21. Screwdriver blade; 22. Heating tube; 23. Material box; 24. Spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 This utility model provides a technical solution:

[0028] A polyethylene pelletizing machine includes a base 1, with two support frames 2 fixedly connected to the top of the base 1. A sleeve 3 is fixedly connected inside the two support frames 2, and a feed hopper 4 is fixedly connected to the top of the sleeve 3. The sleeve 3 is hollow, and a discharge port 8 is fixedly connected to the end of the sleeve 3. The discharge port 8 has a conical structure, and a through hole 10 is formed on its outer surface. A material carrier 23 is slidably hung on the top of the base 1, and the material carrier 23 is located below the discharge port 8. The machine also includes:

[0029] A cutting assembly, located on the outer surface of the through hole 10, is used to cut the extruded polyethylene granules;

[0030] The extrusion granulation assembly, located inside the sleeve 3, is used to extrude polyethylene granules. The first motor 5 is started, and the output end of the first motor 5 drives the connecting shaft 20 to rotate, which in turn drives the auger blade 21 to rotate inside the sleeve 3. The rotation of the auger blade 21 pushes and extrudes the polyethylene raw material forward, causing it to gradually pass through the sleeve 3 and move towards the discharge port 8.

[0031] Furthermore, the cutting assembly includes a scraper 9, a mounting box 11, a second motor 12, a fixing block 16, gears 17, cams 18, and a connecting column 19. Two symmetrically distributed mounting brackets are fixedly connected to the top of the base 1, and a mounting box 11 is fixedly connected between the two mounting brackets. A fixing block 16 is fixedly connected to the bottom inner wall of the mounting box 11, and a second motor 12 is fixedly installed on the bottom inner wall of the mounting box 11. Two gears 17 are rotatably connected to the fixing block 16 away from the outer surface of the second motor 12. The two gears 17 are meshed. The output end of the second motor 12 passes through the fixing block 16 and is fixedly connected to the adjacent gear 17. A rotating shaft is fixedly connected inside the other gear 17, and two symmetrically distributed cams 18 are fixedly connected to the outer surface of the rotating shaft. When the second motor 12 is started, the output end of the second motor 12 drives one gear 17 to rotate. Since the two gears 17 are meshed, the other gear 17 will also rotate synchronously. The rotation of the two gears 17 respectively drives the two cams 18 to perform periodic reciprocating motion.

[0032] Furthermore, the cutting assembly also includes a scraper 9, a connecting post 19, and a spring 24. Two connecting posts 19 are movably connected to the bottom of the mounting box 11. Both connecting posts 19 are elastically connected to the outer surface of the upper side of the inner wall of the bottom of the mounting box 11 with springs 24. Two cams 18 are in movable contact with the top of the corresponding connecting posts 19. The scraper 9 is fixedly connected to the bottom of the two connecting posts 19. When the protruding part of the cam 18 contacts the connecting post 19, it will push the connecting post 19 and the scraper 9 at the bottom to move downward. When the protruding part of the cam 18 separates from the connecting post 19, the connecting post 19 is reset due to the action of the spring 24, thereby driving the scraper 9 to move upward.

[0033] Furthermore, a connecting frame 13 is fixedly connected to the bottom of each of the two mounting brackets. Limiting grooves 14 are formed on the outer surfaces of the two connecting frames 13 that are close to each other. Limiting blocks 15 are fixedly connected to the outer surfaces of both sides of the scraper 9. The two limiting blocks 15 are slidably connected to the corresponding limiting grooves 14. The limiting blocks 15 slide in the limiting grooves 14 on the connecting frame 13 to ensure that the scraper 9 can only move along the predetermined path.

[0034] Furthermore, the extrusion pelletizing assembly includes a first motor 5, a connecting shaft 20, and auger blades 21. The connecting shaft 20 is rotatably connected inside the sleeve 3, and the auger blades 21 are fixedly installed on the outer surface of the connecting shaft 20. The first motor 5 is fixedly installed on the top of the base 1, and the output end of the first motor 5 is fixedly connected to the connecting shaft 20. When the first motor 5 is started, the output end of the first motor 5 drives the connecting shaft 20 to rotate, which in turn drives the auger blades 21 to rotate inside the sleeve 3. The rotation of the auger blades 21 pushes and extrudes the polyethylene raw material forward, causing it to gradually pass through the sleeve 3 and move towards the discharge port 8.

[0035] Furthermore, the extrusion assembly also includes a temperature sensor 6 and a heating tube 22. The heating tube 22 is fixedly installed inside the sleeve 3 and is arranged in a spiral pattern. The temperature sensor 6 is fixedly installed on the outer surface of the sleeve 3. The temperature sensor 6 is electrically connected to the heating tube 22. The heating temperature is monitored in real time by the temperature sensor 6 and the temperature signal is transmitted to the PLC controller 7. The PLC controller 7 compares the preset temperature range with the temperature signal fed back by the temperature sensor 6. When the temperature is lower than the set value, the PLC controller 7 will start the heating tube 22 to heat; when the temperature reaches or exceeds the set value, the PLC controller 7 will turn off the heating tube 22 to maintain the stability of the internal temperature of the sleeve 3.

[0036] Furthermore, a PLC controller 7 is fixedly installed on the outer surface of the sleeve 3. The PLC controller 7 is electrically connected to the temperature sensor 6 and the temperature sensor 6 is controlled by the PLC controller 7. The first motor 5 and the second motor 12 are both controlled by the PLC controller 7. Throughout the process, the PLC controller 7 acts as the control center, responsible for receiving the signal from the temperature sensor 6 and controlling the working status of the heating tube 22, the first motor 5 and the second motor 12 to ensure the smooth progress of the granulation process.

[0037] Working principle: When the operator needs to use this polyethylene pellet mill, the polyethylene raw material is first fed into the feed hopper 4, and then enters the sleeve 3. The first motor 5 is started, and the output end of the first motor 5 drives the connecting shaft 20 to rotate, which in turn drives the auger blades 21 to rotate inside the sleeve 3. The rotation of the auger blades 21 pushes and compresses the polyethylene raw material forward, causing it to gradually move through the sleeve 3 towards the discharge port 8. Inside the sleeve 3, heating tubes 22 are also installed. These heating tubes 22 are spirally distributed and used to heat the polyethylene raw material inside the sleeve 3. The heating temperature is monitored in real time by temperature sensor 6, and the temperature signal is transmitted to PLC controller 7. PLC controller 7 compares the preset temperature range with the temperature signal fed back by temperature sensor 6. When the temperature is lower than the set value, PLC controller 7 will activate heating tube 22 for heating; when the temperature reaches or exceeds the set value, PLC controller 7 will shut off heating tube 22 to maintain a stable internal temperature of sleeve 3. When the polyethylene raw material is squeezed to discharge port 8, due to the conical structure of discharge port 8, the raw material is further squeezed and shaped at this point, forming a continuous... Continuing with the production of polyethylene granules, the cutting assembly begins operation, activating the second motor 12. The output of the second motor 12 drives a gear 17 to rotate. Since the two gears 17 are meshed, the other gear 17 also rotates synchronously. The rotation of the two gears 17 drives the two cams 18 to perform periodic reciprocating motion. When the protruding part of the cam 18 contacts the connecting post 19, it pushes the connecting post 19 and the scraper 9 at the bottom to move downwards. When the protruding part of the cam 18 separates from the connecting post 19, the connecting post 19 returns to its original position due to the action of the spring 24, thereby driving the scraper 9 to move upwards. The position of the two cams 18 changes, causing the scraper 9 to move up and down. Limiting blocks 15 are fixedly connected to the outer surfaces of both sides of the scraper 9. These limiting blocks 15 slide in the limiting grooves 14 on the connecting frame 13 to ensure that the scraper 9 can only move along the predetermined path. When the scraper 9 moves downward, it will come into contact with the polyethylene granules extruded from the through hole 10 of the discharge port 8, thereby cutting the continuous granules into individual granules. Finally, the cut polyethylene granules fall into the loading box 23 located below the discharge port 8, completing the entire granulation process. The length of the granules is controlled by controlling the rotation speed of the second motor 12.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A polyethylene pellet processing granulator, comprising a base (1), wherein two support frames (2) are fixedly connected to the top of the base (1), and sleeves (3) are fixedly connected inside the two support frames (2), and a feed hopper (4) is fixedly connected to the top of the sleeves (3), characterized in that: The sleeve (3) is hollow, and an outlet (8) is fixedly connected to the end of the sleeve (3). The outlet (8) has a conical structure, and a through hole (10) is opened on the outer surface of the outlet (8). A material box (23) is slidably hung on the top of the base (1). The material box (23) is located below the outlet (8). The base also includes: A cutting assembly, located on the outer surface of the through hole (10), is used to cut the extruded polyethylene granules; The extrusion assembly, located inside the sleeve (3), is used to extrude polyethylene granules.

2. The polyethylene pelletizing machine according to claim 1, characterized in that: The cutting assembly includes a scraper (9), a mounting box (11), a second motor (12), a fixing block (16), a gear (17), a cam (18), and a connecting column (19). The top of the base (1) is fixedly connected to two symmetrically distributed mounting brackets, and the mounting box (11) is fixedly connected between the two mounting brackets. The bottom inner wall of the mounting box (11) is fixedly connected to the fixing block (16), and the second motor (12) is fixedly installed on the bottom inner wall of the mounting box (11). The fixing block (16) is rotatably connected to two gears (17) away from the outer surface of the second motor (12). The two gears (17) are meshed. The output end of the second motor (12) passes through the fixing block (16) and is fixedly connected to the adjacent gear (17). The interior of the other gear (17) is fixedly connected to a rotating shaft, and the outer surface of the rotating shaft is fixedly connected to two symmetrically distributed cams (18).

3. The polyethylene pelletizing machine according to claim 2, characterized in that: The cutting assembly also includes a scraper (9), a connecting post (19), and a spring (24). The bottom of the mounting box (11) is movably connected to two connecting posts (19). The two connecting posts (19) are elastically connected to the outer surface of the inner wall of the bottom of the mounting box (11) with springs (24). The two cams (18) are in movable contact with the top of the corresponding connecting posts (19). The bottom of the two connecting posts (19) is fixedly connected to the scraper (9).

4. A polyethylene pelletizing machine according to claim 2, characterized in that: Both mounting brackets are fixedly connected to the bottom of the two mounting brackets. Limiting grooves (14) are opened on the outer surfaces of the two connecting brackets (13) that are close to each other. Limiting blocks (15) are fixedly connected to the outer surfaces of both sides of the scraper (9). The two limiting blocks (15) are slidably connected to the corresponding limiting grooves (14).

5. A polyethylene pelletizing machine according to claim 1, characterized in that: The extrusion pelletizing assembly includes a first motor (5), a connecting shaft (20), and auger blades (21). The connecting shaft (20) is rotatably connected inside the sleeve (3). The auger blades (21) are fixedly installed on the outer surface of the connecting shaft (20). The first motor (5) is fixedly installed on the top of the base (1). The output end of the first motor (5) is fixedly connected to the connecting shaft (20).

6. A polyethylene pelletizing machine according to claim 5, characterized in that: The extrusion granulation assembly also includes a temperature sensor (6) and a heating tube (22). The heating tube (22) is fixedly installed inside the sleeve (3). The heating tube (22) is arranged in a spiral shape. The temperature sensor (6) is fixedly installed on the outer surface of the sleeve (3). The temperature sensor (6) is electrically connected to the heating tube (22).

7. A polyethylene pelletizing machine according to claim 6, characterized in that: A PLC controller (7) is fixedly installed on the outer surface of the sleeve (3). The PLC controller (7) is electrically connected to the temperature sensor (6) and the temperature sensor (6) is controlled by the PLC controller (7). The first motor (5) and the second motor (12) are both controlled by the PLC controller (7).

Images