Plastic granulator

Abstract

The utility model discloses a plastic granulator, which relates to the technical field of plastic granulators, and comprises a device main body, a cutting roller, a rotating fan blade, a mounting block, a rotating rod, a cleaning sheet, a bottom contact sheet, a reset spring, an auxiliary block and a filter screen, a first dust collection box is arranged below the filter screen, and a transmission belt is arranged below the first dust collection box; a cleaning roller is connected below the conveying belt, a movable block is connected below the cleaning roller, a fixed block is connected below the movable block, and a second dust collecting box is arranged below the fixed block. The rotatable cleaning piece is arranged on the inner side of the device body, the cleaning piece is attached to the cutting roller to conduct cleaning all the time, the cutting roller cannot be damaged, meanwhile, the reset spring is used for pulling the cleaning piece, it is guaranteed that cleaning work is conducted all the time, and the cleaning piece drives the bottom contact piece to move in the moving process of the cleaning piece. And the cleaning piece is prevented from being too much thrown out and cannot be reset.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pelletizing machines, and in particular to a plastic pelletizing machine. Background Art

[0002] The plastic pelletizing machine is the terminal equipment in the plastic extrusion and pelletizing process. The plastic is heated, melted by a screw extruder, flows out through a die, is cooled, and finally can obtain plastic pellets after being pelletized by the plastic pelletizing machine. During the process of cutting materials by the existing plastic pelletizing machine, some residual plastic pellets or debris will remain on the cutting knife of the pelletizing machine, and the water remaining on the plastic pellets will stay on the pelletizing machine, which will have a certain impact on the use of the pelletizing machine. Therefore, how to clean the plastic pellets in a timely and effective manner has become a problem that many manufacturers need to solve.

[0003] The existing patent (publication number: CN108422578A) discloses a self-cleaning plastic pelletizing machine, which can clean the pelletizing machine and effectively improve the cleaning efficiency of the pelletizing machine. In the process of implementing this solution, it is found that the following problems in the existing technology have not been well solved:

[0004] During the cleaning process of this device, the plastic pellet cutting work cannot be carried out, which greatly affects the work efficiency. Secondly, during the use process, the transmission belt is cleaned by rollers, but the dust on the cleaned transmission belt still stays above the rollers and is easily redropped onto the transmission belt below. Summary of the Invention

[0005] In order to improve the problems that the plastic pellet cutting work cannot be carried out during the cleaning process, which affects the work efficiency, and the dust after cleaning is still easily redropped onto the transmission belt, the utility model provides a plastic pelletizing machine.

[0006] The utility model provides a plastic pelletizing machine, adopting the following technical scheme:

[0007] A plastic pelletizing machine includes a device main body. A cutting roller is arranged inside the device main body. A rotating fan blade is arranged on the right side inside the device main body. An installation block is arranged on the right side of the cutting roller. A rotating rod is connected to the center of the installation block. A cleaning piece is connected to the center of the rotating rod. A contact bottom piece is connected to the center of the cleaning piece. Reset springs are connected to both sides of the cleaning piece, and the other sides of the reset springs are connected to auxiliary blocks;

[0008] A filter screen is also connected to the center of the device body. A first dust collection box is arranged below the filter screen. A conveyor belt is arranged below the first dust collection box. A cleaning roller is connected below the conveyor belt. A movable block is connected below the cleaning roller. A fixed block is connected below the movable block. A second dust collection box is arranged below the fixed block.

[0009] Through the above technical solution, it is convenient to clean the cutting roller through the cleaning piece while it is cutting, ensuring the working efficiency. And symmetrically distributed cleaning rollers are arranged below the conveyor belt to lift the conveyor belt, and the cleaned dust falls into the interior of the second dust collection box, preventing the dust from falling back above the conveyor belt.

[0010] Optionally, in the above plastic granulator, the filter screen is in a trapezoidal structure, the filter screen is integrally installed with the device body, the inner wall length of the filter screen is the same as the length of the first dust collection box, and an opening and closing door is arranged on the front side of the first dust collection box.

[0011] Through the above technical solution, it is convenient to filter plastic particles through the filter screen to prevent them from falling into the interior of the first dust collection box.

[0012] Optionally, in the above plastic granulator, symmetrically distributed cleaning rollers are arranged below the conveyor belt. The connection mode between the cleaning roller and the movable block is a rotational connection. The connection mode between the movable block and the fixed block is a sliding connection. The connection mode between the fixed block and the device body is a hot melt connection.

[0013] Through the above technical solution, it is convenient to limit the movable block through the fixed block, facilitate the disassembly of the movable block and the cleaning roller, and at the same time clean the conveyor belt.

[0014] Optionally, in the above plastic granulator, the connection mode between the second dust collection box and the device body is a sliding connection. An opening and closing door is arranged on the front side of the second dust collection box. The length of the second dust collection box is the same as the inner wall length of the device body.

[0015] Through the above technical solution, it is convenient to collect dust through the second dust collection box and facilitate the centralized cleaning of dust.

[0016] Optionally, in the above plastic granulator, the mounting block and the device body are mutually engaged. Rotating rods are symmetrically distributed on both sides of the mounting block. The rotating rods and the cleaning pieces are integrally rotated. The cleaning pieces are closely attached to the cutting roller.

[0017] Through the above technical solution, it is convenient to cooperate with the mounting block and the rotating rods to enable the cleaning pieces to move when cleaning the cutting roller and prevent damage to the cutting roller.

[0018] Optionally, in the above-mentioned plastic pelletizer, the cleaning piece and the contact bottom piece are connected by hot melt connection. The cleaning piece and the auxiliary block form a spring reset structure through a reset spring, and the auxiliary block and the mounting block are connected by hot melt connection.

[0019] Through the above technical solution, it is convenient to pull the cleaning piece back to its original position through the reset spring for continuous cleaning, and the contact bottom piece prevents the cleaning piece from rotating too much.

[0020] In summary, the present utility model has at least the following beneficial effects:

[0021] By arranging a rotatable cleaning piece inside the device main body, the cleaning piece fits the cutting roller for continuous cleaning without damaging the cutting roller. At the same time, the reset spring is used to pull the cleaning piece to ensure continuous cleaning work. Secondly, during the movement of the cleaning piece, the contact bottom piece is driven to move, preventing the cleaning piece from being thrown out too much during movement and unable to return to its original position.

[0022] By arranging symmetrically distributed cleaning rollers below the transmission belt to clean the transmission belt, and all the cleaned dust is centrally cleaned by the second dust collection box, without accumulating at the bottom of the device main body. Moreover, the size of the fixed block below the cleaning roller is smaller than that of the movable block, so no dust will accumulate during the installation of the cleaning roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the overall front view structural schematic diagram of the present utility model;

[0024] Figure 2 is the front view structural schematic diagram of the mounting block of the present utility model;

[0025] Figure 3 is the side view structural schematic diagram of the mounting block of the present utility model;

[0026] Figure 4 is the top view structural schematic diagram of the second dust collection box of the present utility model.

[0027] In the figure: 1, device main body; 2, rotating fan blade; 3, cutting roller; 4, filter screen; 5, first dust collection box; 6, transmission belt; 7, fixed block; 8, movable block; 9, cleaning roller; 10, second dust collection box; 11, mounting block; 12, rotating rod; 13, reset spring; 14, cleaning piece; 15, contact bottom piece; 16, auxiliary block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following is a further detailed description of the present utility model in conjunction with the attached Figures 1-4 drawings.

[0029] Please refer to the drawings in the specification Figures 1-4, An embodiment provided by the present utility model: A plastic granulator, including a device main body 1, a cutting roller 3 is arranged inside the device main body 1, a rotating fan blade 2 is arranged on the right side inside the device main body 1, and the rotating fan blade 2 drives air circulation to assist in cleaning. On the right side of the cutting roller 3, there is an installation block 11, the center of the installation block 11 is connected with a rotating rod 12, and the rotating rod 12 enables the cleaning piece 14 to move, avoiding damage caused by always fitting against the cutting roller 3. The center of the rotating rod 12 is connected with a cleaning piece 14, the center of the cleaning piece 14 is connected with a contact bottom piece 15, and the contact bottom piece 15 prevents the cleaning piece 14 from rotating too much and causing damage. On both sides of the cleaning piece 14, there are reset springs 13, and the other side of the reset springs 13 is connected with an auxiliary block 16;

[0030] The center of the device main body 1 is also connected with a filter screen 4, a first dust collection box 5 is arranged below the filter screen 4, and the first dust collection box 5 collects the dust of the cutting roller 3 to ensure the subsequent work. A transmission belt 6 is arranged below the first dust collection box 5, a cleaning roller 9 is connected below the transmission belt 6, and the cleaning roller 9 cleans the transmission belt 6 to prevent dust accumulation. A movable block 8 is connected below the cleaning roller 9, and a fixed block 7 is connected below the movable block 8. The fixed block 7 limits the movable block 8 to facilitate subsequent disassembly, and a second dust collection box 10 is arranged below the fixed block 7.

[0031] See the accompanying drawings of the specification Figures 1-4 , the filter screen 4 is in a trapezoidal structure, the filter screen 4 is integrally installed with the device main body 1, the inner wall length of the filter screen 4 is the same as the length of the first dust collection box 5, and an opening and closing door is arranged on the front side of the first dust collection box 5. The plastic particles are filtered by the filter screen 4 to prevent them from falling into the first dust collection box 5.

[0032] See the accompanying drawings of the specification Figures 1-4 , the cleaning rollers 9 are symmetrically distributed below the transmission belt 6. The connection mode between the cleaning roller 9 and the movable block 8 is a rotational connection, the connection mode between the movable block 8 and the fixed block 7 is a sliding connection, and the connection mode between the fixed block 7 and the device main body 1 is a hot melt connection. The fixed block 7 limits the movable block 8 to facilitate the disassembly of the movable block 8 and the cleaning roller 9, and at the same time cleans the transmission belt 6.

[0033] See the accompanying drawings of the specification Figures 1-4 , the connection mode between the second dust collection box 10 and the device main body 1 is a sliding connection, an opening and closing door is arranged on the front side of the second dust collection box 10, and the length of the second dust collection box 10 is the same as the inner wall length of the device main body 1. The second dust collection box 10 collects the dust to facilitate the centralized cleaning of the dust.

[0034] See the accompanying drawings of the specification Figures 1-4, the mounting block 11 is engaged with the device main body 1. Rotating rods 12 are symmetrically distributed on both sides of the mounting block 11. The rotating rods 12 are integrally rotatable with the cleaning blades 14. The cleaning blades 14 are closely attached to the cutting rollers 3. Through the cooperation of the mounting block 11 and the rotating rods 12, the cleaning blades 14 can move when cleaning the cutting rollers 3, without damaging the cutting rollers 3.

[0035] Refer to the attached drawings of the specification Figures 1-4 , the connection mode between the cleaning blade 14 and the contact bottom plate 15 is hot melt connection. The cleaning blade 14 and the auxiliary block 16 form a spring reset structure through the reset spring 13. The connection mode between the auxiliary block 16 and the mounting block 11 is hot melt connection. The reset spring 13 pulls the cleaning blade 14 to reset, always performing cleaning, and the contact bottom plate 15 prevents the cleaning blade 14 from rotating too much.

[0036] Working principle: When in use, first, the plastic strip enters the interior of the device main body 1 through the feeding port and is then cut into plastic pellets by the cutting rollers 3. During the cutting process, since the cutting rollers 3 are in contact with the cleaning blades 14, the cleaning blades 14 clean the debris on the surface of the cutting rollers 3. At the same time, because the cleaning blades 14 are movable structures, when the cutting rollers 3 rotate rapidly, the collision with the cleaning blades 14 will drive the cleaning blades 14 to rotate, preventing the cleaning blades 14 from colliding violently with the cutting rollers 3 and causing damage. Then, the reset spring 13 drives the cleaning blades 14 to reset, always performing the cleaning work. When the rotation angle of the cleaning blades 14 is relatively large, the contact bottom plate 15 abuts against the cutting rollers 3, avoiding damage to the reset spring 13 caused by the cleaning blades 14 rotating too much. At the same time, the rotating fan blades 2 assist in cooling, performing air cooling work on the cutting rollers 3;

[0037] As described above, after cleaning, the plastic particle fines enter the interior of the first dust collection box 5 after being filtered by the filter screen 4, while the large-sized formed plastic particles fall on the upper side of the conveyor belt 6 along the filter screen 4 and are conveyed out of the device main body 1. At the same time, when the conveyor belt 6 circulates from below, it is in contact with the cleaning roller 9, scraping off the dust and falling into the interior of the second dust collection box 10. When in use for a long time, just take out the first dust collection box 5 and the second dust collection box 10 to clean the dust.

[0038] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited hereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A plastic pelletizing machine, comprising a device main body (1), and a cutting roller (3) is arranged inside the device main body (1), characterized in that: On the right side inside the device main body (1), a rotating fan blade (2) is provided. On the right side of the cutting roller (3), a mounting block (11) is provided. The center of the mounting block (11) is connected to a rotating rod (12). The center of the rotating rod (12) is connected to a cleaning blade (14). The center of the cleaning blade (14) is connected to a contact bottom plate (15). On both sides of the cleaning blade (14), a return spring (13) is connected. The other side of the return spring (13) is connected to an auxiliary block (16). The center of the device main body (1) is also connected to a filter net (4). Below the filter net (4), a first dust collection box (5) is provided. Below the first dust collection box (5), a transmission belt (6) is provided. Below the transmission belt (6), a cleaning roller (9) is connected. Below the cleaning roller (9), a movable block (8) is connected. Below the movable block (8), a fixed block (7) is connected. Below the fixed block (7), a second dust collection box (10) is provided.

2. The plastic granulator according to claim 1, characterized in that: The filter net (4) is in a trapezoidal structure. The filter net (4) is integrally installed with the device main body (1). The inner wall length of the filter net (4) is the same as the length of the first dust collection box (5). On the front side of the first dust collection box (5), an opening and closing door is provided.

3. A plastic pelletizing machine according to claim 1, characterized in that: Below the transmission belt (6), cleaning rollers (9) are symmetrically distributed. The connection mode between the cleaning roller (9) and the movable block (8) is a rotational connection. The connection mode between the movable block (8) and the fixed block (7) is a sliding connection. The connection mode between the fixed block (7) and the device main body (1) is a hot melt connection.

4. A plastic granulator according to claim 1, characterized in that: The connection mode between the second dust collection box (10) and the device main body (1) is a sliding connection. On the front side of the second dust collection box (10), an opening and closing door is provided. The length of the second dust collection box (10) is the same as the inner wall length of the device main body (1).

5. A plastic granulator according to claim 1, characterized in that: The mounting block (11) is engaged with the device main body (1). On both sides of the mounting block (11), rotating rods (12) are symmetrically distributed. The rotating rod (12) and the cleaning blade (14) are integrally rotated. The cleaning blade (14) closely adheres to the cutting roller (3).

6. A plastic granulator according to claim 1, characterized in that: The connection mode between the cleaning blade (14) and the contact bottom plate (15) is a hot melt connection. The cleaning blade (14) and the auxiliary block (16) form a spring return structure through the return spring (13). The connection mode between the auxiliary block (16) and the mounting block (11) is a hot melt connection.

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