A plastic particle production cutting machine

Abstract

The utility model relates to the field of granulator, disclose a granulator for plastic particle production, including granulator box, the granulator box outside is provided with cutting scraping component, the granulator box outside is provided with screening and shaking component, the cutting component includes support frame, support frame outside fixed connection in the granulator box outside, the support frame top fixedly connected with the cylinder, the cylinder output fixedly connected with cutting knife, support frame outside fixedly connected with thin shell, the thin shell inside slide connection has the limit stop, limit stop one side fixedly connected with scraper. In the utility model, in the utility model, through the mutual cooperation between cylinder, cutting knife, scraper and first spring etc. structure, realized cutting and cleaning synchronous, effectively avoid because plastic residual influence cutting precision and efficiency of cutting knife, reduce the abrasion of cutting knife because of the adhesion material, prolong its life.

Description

Technical Field

[0001] This utility model relates to the field of pelletizers, and in particular to a pelletizer for producing plastic pellets. Background Technology

[0002] Plastic granules are an important intermediate in the production of polymer synthetic materials, formed by melting and granulating resins and additives. Classified by raw materials, they come in various types, including polyethylene (PE) and polypropylene (PP). They are characterized by easy processing and adjustable properties, and are widely used in the manufacture of plastic bags, pipes, and daily necessities, making them an indispensable basic material in modern industry and daily life.

[0003] In existing technologies, pelletizers used for plastic pellet production often separate cutting and cleaning processes. During the cutting process, plastic residue can easily adhere to the cutting blade, which not only affects cutting accuracy and efficiency but also exacerbates blade wear due to material adhesion, leading to a shortened service life and the need for frequent maintenance or replacement, thus increasing production costs and downtime.

[0004] To address the above problems, a pelletizer for plastic pellet production is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a pelletizer for plastic pellet production, aiming to improve the problem that in the existing plastic pelletizer, cutting and cleaning are often carried out in separate steps. During the cutting process, plastic residue is easily attached to the cutting blade, which not only affects the cutting accuracy and efficiency, but also aggravates the wear of the cutting blade due to material adhesion, resulting in a shortened service life, requiring frequent maintenance or replacement, and increasing production costs and downtime.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pelletizer for producing plastic pellets, comprising a pelletizing box, a cutting and scraping assembly provided on the outside of the pelletizing box, and a screening and shaking assembly provided on the outside of the pelletizing box;

[0007] The cutting assembly includes a support frame, which is fixedly connected to the outside of the pelletizing box. A cylinder is fixedly connected to the top of the support frame, and a cutting blade is fixedly connected to the output end of the cylinder. A thin shell is fixedly connected to the outside of the support frame, and a limiting plate is slidably connected inside the thin shell. A scraper is fixedly connected to one side of the limiting plate, and a plurality of first springs are fixedly connected to the other side of the limiting plate.

[0008] As a further description of the above technical solution:

[0009] The screening and shaking assembly includes a screening box and a motor. The motor is fixedly connected to the inner wall of the screening box, and the screening box is fixedly connected to the outside of the pelletizing box. A first outlet is provided inside the screening box. A screening filter screen is rotatably connected to the side of the screening box near the first outlet. Two second springs are fixedly connected to the bottom of the screening filter screen. A support block is fixedly connected to the bottom end of the second springs. A rotating rod is fixedly connected to the output end of the motor. A turntable is fixedly connected to the end of the rotating rod away from the motor. A rotating shaft is fixedly connected to the outer edge of the turntable. A connecting rod is rotatably connected to the outer side of the rotating shaft. A second outlet is fixedly connected to the bottom of the screening box, and a feed inlet is provided on the upper side inside the screening box.

[0010] As a further description of the above technical solution:

[0011] The end of the first spring away from the limiting plate is fixedly connected to the inner wall of the thin shell, and the outer side of the scraper is slidably connected to the inside of the thin shell.

[0012] As a further description of the above technical solution:

[0013] The scraper and the cutting blade abut against each other.

[0014] As a further description of the above technical solution:

[0015] The outer side of the support block is fixedly connected to the inner wall of the screening box.

[0016] As a further description of the above technical solution:

[0017] The end of the connecting rod away from the rotating shaft is rotatably connected to the bottom of the screening filter screen.

[0018] As a further description of the above technical solution:

[0019] The outer side of the rotating rod is rotatably connected to the inside of the screening box.

[0020] As a further description of the above technical solution:

[0021] A protective shell is fixedly connected to the inner wall of the screening box, and the motor is fixedly connected to the inner wall of the protective shell on the outside.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the cylinder is started, and its output end drives the cutting blade to move up and down to cut the plastic material. During the cutting process, some plastic will remain on the cutting blade due to prolonged operation. At this time, the scraper scrapes off the plastic residue on the cutting blade, ensuring the cleanliness of the cutting blade and the cutting effect. Under the action of the first spring, the scraper can always maintain close contact with the cutting blade, realizing simultaneous cutting and cleaning. This effectively avoids the cutting accuracy and efficiency of the cutting blade being affected by plastic residue, reduces wear on the cutting blade caused by material adhesion, and extends its service life.

[0024] 2. In this utility model, the eccentric turntable is driven to rotate by a motor. The rotating shaft on the edge of the turntable drives the connecting rod to reciprocate, thereby causing the screening screen to vibrate periodically under the support of the second spring. This achieves efficient and accurate screening of plastic particles. At the same time, the periodic vibration can effectively prevent particles from accumulating and clogging on the screen, and promote the rapid passage or separation of particles of different sizes through the screen, which greatly improves screening efficiency and ensures the uniformity of finished particle size and product quality. Attached Figure Description

[0025] Figure 1 This is a perspective view of a pelletizer for producing plastic pellets according to the present invention.

[0026] Figure 2 This is a schematic diagram of the cylinder structure of a pelletizer for producing plastic pellets according to this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a screening filter screen for a pelletizer used in plastic pellet production, as proposed in this utility model.

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a schematic diagram of the structure of the first spring of a pelletizer for producing plastic pellets according to this utility model.

[0030] Legend:

[0031] 1. Pelletizing box; 2. Support frame; 3. Cylinder; 4. Cutting blade; 5. Thin shell; 6. Limiting plate; 7. Scraper; 8. First spring; 9. Feed inlet; 10. Screening box; 11. First outlet; 12. Second outlet; 13. Screening filter; 14. Protective shell; 15. Motor; 16. Rotating rod; 17. Turntable; 18. Rotating shaft; 19. Second spring; 20. Connecting rod; 21. Support block. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1-3 An embodiment of this utility model is provided: a pelletizer for producing plastic pellets, including a pelletizing box 1, a cutting and scraping component is provided on the outside of the pelletizing box 1, and a screening and shaking component is provided on the outside of the pelletizing box 1.

[0034] The cutting assembly includes a support frame 2, which is fixedly connected to the outside of the pelletizing box 1. A cylinder 3 is fixedly connected to the top of the support frame 2. A cutting blade 4 is fixedly connected to the output end of the cylinder 3. A thin shell 5 is fixedly connected to the outside of the support frame 2. A limiting plate 6 is slidably connected inside the thin shell 5. A scraper 7 is fixedly connected to one side of the limiting plate 6. Multiple first springs 8 are fixedly connected to the other side of the limiting plate 6.

[0035] Specifically, the pelletizing bin 1, as the main body of the entire pelletizer, is used to contain and transport plastic raw materials. It typically integrates a feeding channel that connects to an external extruder, guiding the molten plastic raw material in. A guiding device, such as a guide trough or guide roller assembly, regulates the material's movement trajectory to align with the cutting area. A cooling device uses a water-cooling or air-cooling system to reduce the temperature of the high-temperature raw material, preventing adhesion. A fixed bracket is used to securely mount the support frame 2 of the cutting and scraping components, ensuring cutting stability. A preliminary conveying mechanism, such as a screw conveyor, is fixed to the outside of the pelletizing bin 1, providing stable support for the cylinder 3 and other components. The cylinder 3 is mounted on top of the support frame 2, and its output end is connected to the cutting blade 4. Through telescopic movement, it drives the cutting blade 4 to move up and down, achieving the cutting of the plastic raw material. A thin shell 5 is fixed to the outside of the support frame 2, with a sliding limit plate 6 inside, providing installation space for the scraper 7 and the first spring 8, and limiting their range of motion. The limit plate 6 serves to transmit force and restrict the movement of the scraper 7. The scraper 7 is in close contact with the cutting blade 4. Under the action of the first spring 8, it can promptly scrape off the residual plastic on the cutting blade 4, ensuring the cleanliness of the cutting blade 4 and the cutting effect. The first spring 8 is connected between the limiting plate 6 and the thin shell 5 to provide elasticity, so that the scraper 7 always maintains close contact with the cutting blade 4, ensuring the stability of the scraping effect.

[0036] Reference Figures 1-3The screening and shaking assembly includes a screening box 10 and a motor 15. The motor 15 is fixedly connected to the inner wall of the screening box 10. The screening box 10 is fixedly connected to the outer side of the pelletizing box 1. The screening box 10 has a first outlet 11 inside. A screening filter screen 13 is rotatably connected to the side of the screening box 10 near the first outlet 11. Two second springs 19 are fixedly connected to the bottom of the screening filter screen 13. A support block 21 is fixedly connected to the bottom end of the second springs 19. A rotating rod 16 is fixedly connected to the output end of the motor 15. A turntable 17 is fixedly connected to the end of the rotating rod 16 away from the motor 15. A rotating shaft 18 is fixedly connected to the outer edge of the turntable 17. A connecting rod 20 is rotatably connected to the outer side of the rotating shaft 18. A second outlet 12 is fixedly connected to the bottom of the screening box 10. A feed inlet 9 is opened on the upper side inside the screening box 10.

[0037] Specifically, the screening box 10 is used to accommodate the screening components and receive plastic particles from the pelletizing box 1, serving as the main space for screening operations; the motor 15 is fixed to the inner wall of the screening box 10, providing power for the screening process; the first outlet 11 is opened inside the screening box 10 to discharge plastic particles that do not meet size requirements; the screening filter 13 is rotatably connected to the side of the screening box 10 near the first outlet 11, and performs size screening of plastic particles through its own mesh; the second spring 19 is fixed between the bottom of the screening filter 13 and the support block 21, providing elastic support and assisting the screening filter 13 in generating vibration; the support block 21 is fixed to the inner wall of the screening box 10 to fix the second spring 19 and ensure the spring support effect; the rotating rod 16 is connected to the electric motor. The output end of the machine 15 and the turntable 17 transmit the power of the motor 15 to the turntable 17; the turntable 17 rotates under the drive of the rotating rod 16, and drives the connecting rod 20 to move through the rotating shaft 18 on the outer edge; the rotating shaft 18 serves as the connecting hub between the turntable 17 and the connecting rod 20, so that the connecting rod 20 reciprocates with the rotation of the turntable 17; one end of the connecting rod 20 is rotatably connected to the rotating shaft 18, and the other end is rotatably connected to the bottom of the screening screen 13, converting the circumferential motion of the turntable 17 into the shaking of the screening screen 13; the second outlet 12 is fixed at the bottom of the screening box 10 for discharging plastic particles that meet the size requirements; the feed inlet 9 is opened on the upper side inside the screening box 10 for receiving plastic particles from the pelletizing box 1, so that they enter the screening box 10 for screening.

[0038] Reference Figures 1-5 The first spring 8 is fixedly connected to the inner wall of the thin shell 5 at the end away from the limiting plate 6. The scraper 7 is slidably connected to the inside of the thin shell 5 on the outside. The scraper 7 and the cutting blade 4 abut against each other. The support block 21 is fixedly connected to the inner wall of the screening box 10 on the outside. The connecting rod 20 is rotatably connected to the bottom of the screening filter screen 13 at the end away from the rotating shaft 18. The rotating rod 16 is rotatably connected to the inside of the screening box 10 on the outside. The protective shell 14 is fixedly connected to the inner wall of the screening box 10 on the inside. The motor 15 is fixedly connected to the inner wall of the protective shell 14 on the outside.

[0039] Specifically, the first spring 8 provides elasticity to keep the scraper 7 in close contact with the cutting blade 4; the scraper 7 scrapes away residual plastic on the surface of the cutting blade 4; the scraper 7 and the cutting blade 4 abut against each other to ensure the cleanliness of the cutting blade 4; the support block 21 is fixed to the inner wall of the screening box 10 to support the second spring 19; the connecting rod 20 transmits power to make the screening filter screen 13 vibrate; the rotating rod 16 supports the turntable 17 and transmits power to the motor 15; the protective shell 14 protects the motor 15 from the influence of plastic particles; the motor 15 is fixed to the inner wall of the protective shell 14 to provide power to the screening vibration assembly.

[0040] Working principle: When plastic is extruded from the mold at the front of the pelletizing box 1, the cylinder 3 is activated, and its output end drives the cutting blade 4 to move up and down, cutting the plastic raw material to obtain preliminary plastic pellets. During the cutting process, some plastic will remain on the cutting blade 4 due to prolonged operation. At this time, the scraper 7 scrapes off the residual plastic on the cutting blade 4, ensuring the cleanliness of the cutting blade 4 and the cutting effect. Under the action of the first spring 8, the scraper 7 can always maintain close contact with the cutting blade 4, ensuring the stability of the scraping effect.

[0041] After cutting, the plastic granules enter the screening box 10 of the screening and shaking assembly through the feed inlet 9. The motor 15 is fixed inside the protective shell 14 on the inner wall of the screening box 10. After the motor 15 is started, the rotating rod 16 at its output end drives the turntable 17 to rotate. The rotating shaft 18 on the outer edge of the turntable 17 rotates with the turntable 17, which in turn drives the connecting rod 20 to move. The end of the connecting rod 20 away from the rotating shaft 18 is rotatably connected to the bottom of the screening filter screen 13, so that the screening filter screen 13 vibrates under the cooperation of the second spring 19. During the vibration process, plastic granules that meet the size requirements are discharged from the second outlet 12 through the screening filter screen 13, while granules that do not meet the size requirements are discharged from the first outlet 11, thus realizing the screening of plastic granules.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pelletizer for producing plastic pellets, comprising a pelletizing box (1), characterized in that: A cutting and scraping assembly is provided on the outside of the pelletizing box (1), and a screening and shaking assembly is provided on the outside of the pelletizing box (1); The cutting and scraping assembly includes a support frame (2), which is fixedly connected to the outside of the pelletizing box (1). A cylinder (3) is fixedly connected to the top of the support frame (2), and a cutting blade (4) is fixedly connected to the output end of the cylinder (3). A thin shell (5) is fixedly connected to the outside of the support frame (2), and a limiting plate (6) is slidably connected inside the thin shell (5). A scraper (7) is fixedly connected to one side of the limiting plate (6), and a plurality of first springs (8) are fixedly connected to the other side of the limiting plate (6).

2. The pelletizer for producing plastic pellets according to claim 1, characterized in that: The screening and shaking assembly includes a screening box (10) and a motor (15). The motor (15) is fixedly connected to the inner wall of the screening box (10) on the outside. The screening box (10) is fixedly connected to the outside of the pelletizing box (1). A first outlet (11) is provided inside the screening box (10). A screening filter (13) is rotatably connected to the side of the screening box (10) near the first outlet (11). Two second springs (19) are fixedly connected to the bottom of the screening filter (13). A support block (21) is fixedly connected to the bottom of the two springs (19). A rotating rod (16) is fixedly connected to the output end of the motor (15). A turntable (17) is fixedly connected to the end of the rotating rod (16) away from the motor (15). A rotating shaft (18) is fixedly connected to the outer edge of the turntable (17). A connecting rod (20) is rotatably connected to the outer side of the rotating shaft (18). A second outlet (12) is fixedly connected to the bottom of the screening box (10). A feed inlet (9) is opened on the upper side inside the screening box (10).

3. A pelletizer for producing plastic pellets according to claim 1, characterized in that: The first spring (8) is fixedly connected to the inner wall of the thin shell (5) at the end away from the limiting plate (6), and the scraper (7) is slidably connected to the inside of the thin shell (5) on the outside.

4. A pelletizer for producing plastic pellets according to claim 1, characterized in that: The scraper (7) and the cutting blade (4) abut against each other.

5. A pelletizer for producing plastic pellets according to claim 2, characterized in that: The outer side of the support block (21) is fixedly connected to the inner wall of the screening box (10).

6. A pelletizer for producing plastic pellets according to claim 2, characterized in that: The connecting rod (20) is rotatably connected to the bottom of the sieve filter (13) at one end away from the rotating shaft (18).

7. A pelletizer for producing plastic pellets according to claim 2, characterized in that: The rotating rod (16) is rotatably connected to the inside of the screening box (10) on the outside.

8. A pelletizer for producing plastic pellets according to claim 2, characterized in that: The inner wall of the screening box (10) is fixedly connected to a protective shell (14), and the outer side of the motor (15) is fixedly connected to the inner wall of the protective shell (14).

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