Plastic particle cutting machine

Abstract

The utility model discloses a plastic granule cutting machine which comprises a granule cutting box and a granule cutting mechanism, one side of the granule cutting box is provided with a limiting conveying mechanism, the limiting conveying mechanism comprises a fixed support, a first conveying belt, a movable support and a second conveying belt, one side of the granule cutting box is provided with a feeding port, the fixed support is fixedly installed in the feeding port, and the second conveying belt is fixedly installed in the fixed support. The first conveying belt is arranged between the fixed supports, the movable supports are movably arranged in the feeding port, and the second conveying belt is arranged between the movable supports. According to the plastic particle granulator provided by the utility model, the limiting conveying mechanism is arranged, so that a thin plastic strip can be clamped and conveyed when the thin plastic strip is cut, and the situations that the thin plastic strip is inclined, the front end of the thin plastic strip moves along with a cutting knife, so that the rear end of the thin plastic strip tilts, and the cutting is insufficient are avoided; and therefore, the practicability and the stability of the plastic particle cutting machine in use are improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic pelletizing technology, specifically to a plastic pelletizing machine. Background Technology

[0002] Recycled plastic pellets have a wide range of applications. In daily life, they can be used to manufacture various plastic bags, buckets, basins, toys, furniture, stationery, and other household items and plastic products. In the clothing industry, they can be used to manufacture clothing, ties, buttons, and zippers. In building materials, recycled plastic pellets are used to produce wood-plastic composite profiles, which are used to manufacture various building components and plastic doors and windows. In the chemical industry, they can be used to make reaction vessels, pipes, containers, pumps, and valves, and are used in chemical production sites where corrosion and wear are a challenge. In agriculture, they can be used to make agricultural films, water pipes, agricultural machinery, fertilizer packaging bags, and cement packaging bags. Furthermore, recycled pellets are also widely used in the electrical and telecommunications industries.

[0003] In the plastic extrusion production process, plastic raw materials are melted and extruded through an extruder at high temperature. When the plastic melt comes out of the extruder die, it appears as a series of lines. After the molten plastic is cooled in a water tank, it becomes a rigid plastic in the form of lines. At this time, the plastic has solidified from the molten state to a solid state and is then fed into a pelletizer to be cut into small pieces.

[0004] Existing pelletizers lack corresponding limiting structures at the material conveying point, which can cause tilting during conveying. Furthermore, during cutting, the front end of the plastic strips tends to move with the cutting blade, causing the rear end to curl up, resulting in poor pelletizing. The spacing between the plastic strips is often irregular and unpredictable, easily leading to clumping and making cutting difficult. Therefore, there is an urgent need to design a plastic pelletizer to solve these problems. Utility Model Content

[0005] The purpose of this invention is to provide a plastic pelletizer to address the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A plastic pelletizer includes a pelletizing box and a pelletizing mechanism. A limiting conveying mechanism is provided on one side of the pelletizing box. The limiting conveying mechanism includes a fixed bracket, a first conveyor belt, a movable bracket, and a second conveyor belt. A feed inlet is provided on one side of the pelletizing box. The fixed bracket is fixedly installed inside the feed inlet. The first conveyor belt is disposed between the fixed brackets. The movable bracket is movably disposed inside the feed inlet. The second conveyor belt is disposed between the movable brackets. A lead screw is rotatably mounted on the upper side of the fixed bracket. A threaded slider is provided on the upper side of the movable bracket. The threaded slider is threadedly connected to the lead screw.

[0008] There are two lead screws and two threaded sliders. A rotating shaft is fixedly installed on the lower side of each of the two lead screws. A synchronous belt is sleeved between the two rotating shafts. A drive motor is fixedly installed on one side of the pelletizing box. The output end of the drive motor is fixedly connected to the lower end of one of the rotating shafts.

[0009] The movable support is provided with a limiting mechanism on its lower side. The limiting mechanism includes a mounting bracket and a limiting plate, and the number of limiting plates is several.

[0010] The mounting bracket has a mounting groove on its lower side, and several bidirectional threaded rods are rotatably installed between the mounting grooves. Two corresponding limiting plates are threadedly connected to the bidirectional threaded rods, and two adjacent bidirectional threaded rods are fixedly connected. A mounting groove is provided on one side of the limiting plate, and several pulleys are rotatably installed in the mounting groove.

[0011] The pelletizing mechanism includes a cylinder, a blade holder, and a cutting blade. The cylinder is fixedly installed on the upper side of the pelletizing box, the blade holder is fixedly installed on the output end of the cylinder, the cutting blade is disposed on the lower side of the blade holder, and two guide rods are fixedly installed on the upper side of the blade holder. The guide rods are slidably connected to the pelletizing box.

[0012] The pelletizing box has a discharge port on one side, and a discharge frame is fixedly installed inside the discharge port. The discharge frame is located below the cutting blade.

[0013] In the above technical solution, the plastic pelletizer provided by this utility model has the following beneficial effects:

[0014] (1) The plastic pelletizer provided by this utility model can clamp and convey the plastic strips during the cutting process by setting a limiting conveying mechanism, thereby avoiding the plastic strips from tilting and the front end of the plastic strips from lifting up due to the movement of the cutting blade, which would result in insufficient cutting. This improves the practicality and stability of the plastic pelletizer during use.

[0015] (2) The plastic pelletizer provided by this utility model, through the setting of the limiting mechanism, can make the plastic strips evenly distributed on the upper side of the first conveyor belt, avoid the plastic strips from piling up and causing cutting difficulties, thereby further improving the practicality and stability of the plastic pelletizer during use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a plastic pelletizer according to the present invention.

[0018] Figure 2 This is a side view cross-sectional structural diagram of an embodiment of a plastic pelletizer according to the present invention.

[0019] Figure 3 This is a schematic diagram of the limiting mechanism provided in an embodiment of a plastic pelletizer according to the present invention.

[0020] 1. Pelletizing box; 2. Pelletizing mechanism; 3. Discharge frame; 4. Limiting conveyor mechanism; 5. Limiting mechanism; 6. Cylinder; 7. Knife holder; 8. Cutting knife; 9. Guide rod; 10. Fixed bracket; 11. First conveyor belt; 12. Movable bracket; 13. Second conveyor belt; 14. Drive motor; 15. Rotating shaft; 16. Synchronous belt; 17. Lead screw; 18. Threaded slider; 19. Mounting bracket; 20. Mounting slot; 21. Bidirectional threaded rod; 22. Limiting plate; 23. Pulley; 24. Mounting slot. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-3As shown in the figure, a plastic pelletizer provided by this utility model includes a pelletizing box 1 and a pelletizing mechanism 2. A limiting conveying mechanism 4 is provided on one side of the pelletizing box 1. The limiting conveying mechanism 4 includes a fixed bracket 10, a first conveyor belt 11, a movable bracket 12, and a second conveyor belt 13. A feed inlet is provided on one side of the pelletizing box 1. The fixed bracket 10 is fixedly installed in the feed inlet. The first conveyor belt 11 is arranged between the fixed brackets 10. The movable bracket 12 is movably arranged in the feed inlet. The second conveyor belt 13 is arranged between the movable brackets 12. A lead screw 17 is rotatably installed on the upper side of the fixed bracket 10. A threaded slider 18 is provided on the upper side of the movable bracket 12. The threaded slider 18 is threadedly connected to the lead screw 17. There are two lead screws 17 and two threaded sliders 18. A rotating shaft 15 is fixedly installed on the lower side of each of the two lead screws 17. A synchronous belt 16 is sleeved between the two rotating shafts 15. A drive motor 14 is fixedly installed on one side of the pelletizing box 1. The output end of the drive motor 14 is fixedly connected to the lower end of one of the rotating shafts 15.

[0023] Specifically, in this embodiment, by placing the plastic strip on the first conveyor belt 11, and then starting the drive motor 14 to drive one of the rotating shafts 15 to rotate, the rotation of the rotating shaft 15 can drive the other rotating shaft 15 to rotate via the synchronous belt 16. The synchronous rotation of the two rotating shafts 15 can drive the two lead screws 17 to rotate synchronously, and the synchronous rotation of the two lead screws 17 can drive the movable bracket 12 to move. The movement of the movable bracket 12 can drive the second conveyor belt 13 to move. By moving the second conveyor belt 13 downward and contacting the plastic strip on the first conveyor belt 11, the plastic strip can be clamped and limited. Then, by starting the first conveyor belt 11 and the second conveyor belt 13 simultaneously, the first conveyor belt 11 and the second conveyor belt 13 can drive the plastic strip forward.

[0024] The first conveyor belt 11 and the second conveyor belt 13 are both composed of a motor, two rotating rollers and a belt, and the belt surface is provided with anti-slip texture. Synchronous pulleys are fixedly installed on the sides of the two rotating shafts 15, and the synchronous belt 16 is sleeved on the sides of the two synchronous pulleys. The synchronous pulleys and the synchronous belt 16 can also be configured as a sprocket and chain drive structure.

[0025] The present invention provides a plastic pelletizer, wherein a limiting mechanism 5 is provided on the lower side of the movable support 12. The limiting mechanism 5 includes a mounting bracket 19 and a limiting plate 22. The number of limiting plates 22 is several. A mounting groove 20 is opened on the lower side of the mounting bracket 19. Several bidirectional threaded rods 21 are rotatably installed between the mounting grooves 20. Two corresponding limiting plates 22 are threadedly connected to the bidirectional threaded rods 21, and two adjacent bidirectional threaded rods 21 are fixedly connected. A mounting groove 24 is opened on one side of the limiting plate 22. Several pulleys 23 are rotatably installed in the mounting groove 24.

[0026] In another embodiment of this utility model, when a plastic strip is placed on the first conveyor belt 11 and the plastic strip is clamped and limited by the downward movement of the second conveyor belt 13, the plastic strip is placed between two corresponding limiting plates 22. By rotating the outer bidirectional threaded rod 21, since several bidirectional threaded rods 21 are fixedly connected to each other, rotating the outer bidirectional threaded rod 21 can drive several bidirectional threaded rods 21 to rotate synchronously, thereby causing several bidirectional threaded rods 21 to synchronously drive the corresponding two limiting plates 22 to move towards each other. The two limiting plates 22 moving towards each other can limit the two sides of the plastic strip, and through the pulley 23, the plastic strip can be smoothly conveyed forward with the first conveyor belt 11 and the second conveyor belt 13. The bidirectional threaded rod 21 is driven to rotate by a motor.

[0027] In other embodiments, the limiting mechanism 5 is provided on the upper side of the fixed bracket 10, which can limit the plastic strip on both sides when the plastic strip is placed on the first conveyor belt 11. At the same time, the limiting mechanism 5 can also be provided on both the fixed bracket 10 and the movable bracket 12 to improve the limiting effect.

[0028] This utility model provides a plastic pelletizer. The pelletizing mechanism 2 includes a cylinder 6, a blade holder 7, and a cutting blade 8. The cylinder 6 is fixedly installed on the upper side of the pelletizing box 1. The blade holder 7 is fixedly installed on the output end of the cylinder 6. The cutting blade 8 is located on the lower side of the blade holder 7. Two guide rods 9 are fixedly installed on the upper side of the blade holder 7. The guide rods 9 are slidably connected to the pelletizing box 1. A discharge port is opened on one side of the pelletizing box 1. A discharge frame 3 is fixedly installed in the discharge port. The discharge frame 3 is located on the lower side of the cutting blade 8.

[0029] In another embodiment of this utility model, the cutting blade 8 is located on the upper front end of the first conveyor belt 11 and the second conveyor belt 13, and the discharge frame 3 is located on the lower side of the cutting blade 8, the first conveyor belt 11 and the second conveyor belt 13. The starting cylinder 6 drives the blade holder 7 to reciprocate, so that the blade holder 7 can drive the cutting blade 8 to reciprocate, thereby enabling the cutting blade 8 to perform granulation on the plastic strips. The granulated plastic particles fall into the discharge frame 3 and slide out of the pelletizing box 1 along the discharge frame 3. The pelletizing box 1 is provided with an inspection door on one side, through which the cutting blade 8 can be replaced.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A plastic pelletizer, comprising a pelletizing box (1) and a pelletizing mechanism (2), characterized in that, A limiting conveying mechanism (4) is provided on one side of the pelletizing box (1). The limiting conveying mechanism (4) includes a fixed bracket (10), a first conveyor belt (11), a movable bracket (12), and a second conveyor belt (13). A feed inlet is provided on one side of the pelletizing box (1). The fixed bracket (10) is fixedly installed in the feed inlet. The first conveyor belt (11) is arranged between the fixed brackets (10). The movable bracket (12) is movably arranged in the feed inlet. The second conveyor belt (13) is arranged between the movable brackets (12). A lead screw (17) is rotatably installed on the upper side of the fixed bracket (10). A threaded slider (18) is provided on the upper side of the movable bracket (12). The threaded slider (18) is threadedly connected to the lead screw (17).

2. The plastic pelletizer according to claim 1, characterized in that, There are two lead screws (17) and two threaded sliders (18). A rotating shaft (15) is fixedly installed on the lower side of each of the two lead screws (17). A synchronous belt (16) is sleeved between the two rotating shafts (15). A drive motor (14) is fixedly installed on one side of the pelletizing box (1). The output end of the drive motor (14) is fixedly connected to the lower end of one of the rotating shafts (15).

3. A plastic pelletizer according to claim 1, characterized in that, The movable support (12) is provided with a limiting mechanism (5) on its lower side. The limiting mechanism (5) includes a mounting bracket (19) and a limiting plate (22). The number of limiting plates (22) is several.

4. A plastic pelletizer according to claim 3, characterized in that, The mounting bracket (19) has a mounting groove (20) on its lower side. Several bidirectional threaded rods (21) are rotatably installed between the mounting grooves (20). Two corresponding limiting plates (22) are threadedly connected to the bidirectional threaded rods (21), and two adjacent bidirectional threaded rods (21) are fixedly connected. The limiting plate (22) has an installation groove (24) on one side. Several pulleys (23) are rotatably installed in the installation groove (24).

5. A plastic pelletizer according to claim 1, characterized in that, The pelletizing mechanism (2) includes a cylinder (6), a knife holder (7), and a cutting knife (8). The cylinder (6) is fixedly installed on the upper side of the pelletizing box (1). The knife holder (7) is fixedly installed on the output end of the cylinder (6). The cutting knife (8) is located on the lower side of the knife holder (7). Two guide rods (9) are fixedly installed on the upper side of the knife holder (7). The guide rods (9) are slidably connected to the pelletizing box (1).

6. A plastic pelletizer according to claim 5, characterized in that, The pelletizing box (1) has a discharge port on one side, and a discharge frame (3) is fixedly installed inside the discharge port. The discharge frame (3) is located below the cutting blade (8).

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