Replaceable cutter for plastic pelletizer

Abstract

The utility model relates to the technical field of granulator, specifically disclose a kind of replaceable cutter of plastic granulator, it includes: granulator main body, the one end of granulator main body is fixedly connected with discharge frame, the one end of granulator main body is placed with cooling box, the lateral wall of cooling box is fixedly connected with support table, the upper surface of support table is fixedly connected with motor, the one end of motor is provided with conveying mechanism, the inside of cooling box is provided with quick release mechanism, when the granulator main body is produced, plastic particle is cooled in cooling box by water, motor is started, plastic particle will be pulled and conveyed to first conveying roller and second conveying roller, then when two conveying rollers rotate, it will drive lifting plate to rotate, will make granulating knife move up and down, to carry out granulating process to plastic particle.

Description

Technical Field

[0001] This utility model relates to the field of pelletizer technology, specifically to a replaceable cutter for a plastic pelletizer. Background Technology

[0002] A plastic pelletizer is a mechanical device used to cut plastic raw materials or recycled plastic products into uniform pellets, mainly used in the plastic processing and recycling industry. Its working principle typically includes steps such as melting, extrusion, cooling, and cutting: first, the plastic is heated and softened, then extruded into strips or ribbons by a screw, and after being water-cooled or air-cooled and solidified, it is cut into pellets of uniform size by rotating blades.

[0003] Over prolonged pelletizing operations, the pelletizing blade becomes dull due to excessive cutting cycles, requiring replacement. Existing replaceable blades are cumbersome to replace, necessitating the use of specialized tools to disassemble multiple fasteners and precisely align them for re-secured installation. This process consumes significant downtime, impacting production continuity. Therefore, we propose a replaceable blade for plastic pelletizing machines. Utility Model Content

[0004] The purpose of this invention is to provide a replaceable cutter for a plastic pelletizer, addressing the issue mentioned in the background section where the pelletizing cutter becomes dull due to excessive cutting cycles during prolonged operation. Dull cutters require replacement, but existing replaceable cutters are cumbersome to replace, requiring the use of specialized tools to disassemble multiple fasteners and precise alignment for re-fixing. This process results in significant downtime, impacting production continuity.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a replaceable cutter for a plastic pelletizer, comprising: a pelletizer body, a discharge frame fixedly connected to one end of the pelletizer body, a cooling box placed at one end of the pelletizer body, a support platform fixedly connected to the side wall of the cooling box, a motor fixedly connected to the upper surface of the support platform, a conveying mechanism provided at one end of the motor, and a quick-release mechanism provided inside the cooling box.

[0006] Preferably, the conveying mechanism includes a first gear mounted to the motor drive end, a second gear meshing with the outer wall of the first gear, and a first conveying roller and a second conveying roller respectively mounted at the shaft center of the first gear and the second gear.

[0007] Preferably, a lifting plate is rotatably connected to the outer wall of the second conveying roller, the lifting plate being hexagonal, and a transverse groove is provided on the inner wall of the cooling box, with a lifting rod slidably connected to the inner wall of the transverse groove.

[0008] Preferably, the quick-release mechanism includes a fixed frame sleeved with the outer wall of the lifting rod, a limit rod fixedly connected to the upper surface of the fixed frame, and a plurality of limit rods. A movable plate is slidably connected to the outer wall of the limit rod, and a telescopic rod is fixedly connected to the upper surface of the fixed frame.

[0009] Preferably, the telescopic end of the fixed frame is fixedly connected to the bottom of the movable plate, a pelletizing knife is installed on the inner wall of the fixed frame, and a fixing rod is movably connected to the outer wall of the same end of the fixed frame and the pelletizing knife.

[0010] Preferably, a pelletizing plate is fixedly connected to the inner wall of the cooling box, and the pelletizing plate is located near the pelletizing knife directly below it. A discharge port is provided on the outer wall of the pelletizing plate, and a receiving box is placed on one side of the discharge port.

[0011] This utility model has at least the following beneficial effects:

[0012] (1) By setting up a conveying mechanism, when the pelletizer body is producing, the plastic particles are cooled by water in the cooling box. When the motor is started, the plastic particles will be pulled and conveyed to the first conveying roller and the second conveying roller. Then, when the two conveying rollers rotate, they will drive the lifting plate to rotate, which will make the pelletizing knife move up and down, thereby performing the pelletizing process on the plastic particles. This setting can not only accelerate the cooling of the material produced by the pelletizer body, but also automatically complete the pelletizing process of the material in water, which greatly improves the production efficiency.

[0013] (2) The quick-release mechanism eliminates the need for complex disassembly steps and special tools for the pelletizing blade, significantly reducing the time spent on blade replacement. This greatly shortens downtime caused by blade replacement, thereby increasing the effective working time of the equipment and ensuring production continuity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the quick-assembly mechanism of this utility model;

[0016] Figure 3 The structure of this utility model Figure 1 Enlarged view of point A in the middle.

[0017] In the diagram: 1. Main body of the pelletizer; 2. Discharge frame; 3. Cooling box; 4. Support platform; 5. Motor; 6. Conveying mechanism; 61. First gear; 62. Second gear; 63. First conveying roller; 64. Second conveying roller; 65. Lifting plate; 66. Transverse trough; 67. Lifting rod; 7. Quick release mechanism; 71. Fixed frame; 72. Limiting rod; 73. Movable plate; 74. Telescopic rod; 75. Pelletizer blade; 76. Fixed rod; 8. Pelletizer plate; 9. Discharge port; 10. Receiving box. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1 to 3 This utility model provides a technical solution: a replaceable cutter for a plastic pelletizer, comprising: a pelletizer body 1, a discharge frame 2 fixedly connected to one end of the pelletizer body 1, a cooling box 3 placed at one end of the pelletizer body 1, a support platform 4 fixedly connected to the side wall of the cooling box 3, a motor 5 fixedly connected to the upper surface of the support platform 4, a conveying mechanism 6 provided at one end of the motor 5, and a quick-release mechanism 7 provided inside the cooling box 3.

[0020] The conveying mechanism 6 includes a first gear 61 mounted to the drive end of the motor 5. A second gear 62 meshes with the outer wall of the first gear 61. A first conveying roller 63 and a second conveying roller 64 are respectively mounted at the shaft centers of the first gear 61 and the second gear 62. A lifting plate 65 is rotatably connected to the outer wall of the second conveying roller 64. The lifting plate 65 is hexagonal. A transverse groove 66 is formed on the inner wall of the cooling box 3. A lifting rod 67 is slidably connected to the inner wall of the transverse groove 66. The first conveying roller 63 and the second conveying roller 64 are used to convey materials, facilitating subsequent automatic pelletizing operations. When the pelletizer body 1 is in operation, the produced plastic is cylindrical and enters the cooling box 3 through the discharge frame 2. At this time, the motor 5 is started, which drives the first gear 61 to rotate. The rotation of the first gear 61 drives the meshing second gear 62 to rotate. The rotation of the two gears simultaneously drives the first conveying roller 63 and the second conveying roller 64 to rotate, sending the material between the first conveying roller 63 and the second conveying roller 64. In this way, the material is automatically pulled and then conveyed through the discharge port 9. When the second conveying roller 64 rotates, the lifting plate 65 also rotates. The hexagonal lifting plate 65 will have a part in contact with the lifting rod 67, pushing the lifting rod 67 and causing the fixed frame 71 to move upward. Since the lifting rod 67 is limited by the transverse groove 66, it can only move upward, thereby driving the pelletizing blade 75 to move upward as well. The continuous rotation of the lifting plate 65 will cause the sharp corner to separate from the lifting rod 67. Under the action of the telescopic rod 74, the fixed frame 71 will drive the pelletizing blade 75 to move downward, thereby performing the pelletizing operation.

[0021] The quick-release mechanism 7 includes a fixed frame 71 that is sleeved on the outer wall of the lifting rod 67. A limit rod 72 is fixedly connected to the upper surface of the fixed frame 71. There are several limit rods 72. A movable plate 73 is slidably connected to the outer wall of the limit rod 72. A telescopic rod 74 is fixedly connected to the upper surface of the fixed frame 71. The telescopic end of the fixed frame 71 is fixedly connected to the bottom of the movable plate 73. A pelletizing knife 75 is installed on the inner wall of the fixed frame 71. A fixed rod 76 is movably connected to the outer wall of the pelletizing knife 75 and the fixed frame 71 at the same end. A pelletizing plate 8 is fixedly connected to the inner wall of the cooling box 3. The pelletizing plate 8 is close to the bottom of the pelletizing knife 75. A discharge port 9 is opened on the outer wall of the pelletizing plate 8. A receiving box 10 is placed on one side of the discharge port 9. When motor 5 starts, it drives the first gear 61 to rotate. The rotation of the first gear 61 drives the meshing second gear 62 to rotate. The rotation of the two gears simultaneously drives the first conveying roller 63 and the second conveying roller 64 to rotate, inserting the material into the conveying groove of the two conveying rollers. At this time, the material is sent between the first conveying roller 63 and the second conveying roller 64, so the material will be automatically pulled and conveyed through the discharge port 9. The discharge port 9 facilitates the cutting blade 75 to cut the material into pellets. After cutting, the pellets fall into the collection box 10.

[0022] When the pelletizer 75 needs to be replaced, the operator simply pulls out the retaining rod 76 to separate the pelletizer 75 from the retaining frame 71, thus removing the pelletizer 75. For installation, simply align the retaining rod 76 with the through holes on the retaining frame 71 and the pelletizer 75, and then insert the retaining rod 76 directly. The quick-installation mechanism 7 eliminates the need for complex disassembly steps and special tools, significantly reducing the time spent on pelletizer replacement. This significantly shortens downtime caused by pelletizer replacement, thereby increasing the effective operating time of the equipment and ensuring production continuity.

[0023] Working principle: When the pelletizer body 1 is in production, the produced plastic is cylindrical and enters the cooling box 3 through the discharge frame 2. At this time, the motor 5 is started, driving the first gear 61 to rotate. The rotation of the first gear 61 drives the meshing second gear 62 to rotate. The rotation of the two gears simultaneously drives the first conveying roller 63 and the second conveying roller 64 to rotate, inserting the material into the conveying groove of the two conveying rollers. At this time, the material is delivered between the first conveying roller 63 and the second conveying roller 64, so that the material is automatically pulled and then conveyed through the discharge port 9. When the second conveying roller 64 rotates, the lifting plate 65 also rotates. The hexagonal lifting plate 65 will partially align with the lifting plate. When the lowering rod 67 contacts and pushes the lifting rod 67, it causes the fixed frame 71 to move upward. Since the lifting rod 67 is limited by the transverse groove 66, it can only move upward, thus moving the pelletizing blade 75 upward as well. The continuous rotation of the lifting plate 65 causes the sharp corner to separate from the lifting rod 67. Under the action of the telescopic rod 74, the fixed frame 71 then moves the pelletizing blade 75 downward, thus pelletizing the material. When the water temperature inside the cooling box 3 rises, the water can be replaced. This setup not only accelerates the cooling of the material produced by the pelletizer body 1 but also automatically completes the pelletizing process in water, greatly improving production efficiency. When the pelletizing blade 75 needs to be replaced, the operator pulls out the fixing rod 76 directly, separating the pelletizing blade 75 from the fixed frame 71, thus disassembling the pelletizing blade 75. For installation, simply align the fixing rod 76 with the through holes on the fixed frame 71 and the pelletizing blade 75, and then insert the fixing rod 76 directly. This mechanism is time-saving, labor-saving, simple, and convenient to operate.

[0024] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0026] 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 illustrative of the principles of this 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 replaceable cutter for a plastic pelletizer, comprising: The pelletizer body (1) is characterized in that: a discharge frame (2) is fixedly connected to one end of the pelletizer body (1), a cooling box (3) is placed at one end of the pelletizer body (1), a support platform (4) is fixedly connected to the side wall of the cooling box (3), a motor (5) is fixedly connected to the upper surface of the support platform (4), a conveying mechanism (6) is provided at one end of the motor (5), and a quick-release mechanism (7) is provided inside the cooling box (3).

2. The replaceable cutter of a plastic pelletizer according to claim 1, characterized in that: The conveying mechanism (6) includes a first gear (61) installed at the drive end of the motor (5), a second gear (62) meshing with the outer wall of the first gear (61), and a first conveying roller (63) and a second conveying roller (64) respectively installed at the axis of the first gear (61) and the second gear (62).

3. The replaceable cutter of a plastic pelletizer according to claim 2, characterized in that: The outer wall of the second conveying roller (64) is rotatably connected to a lifting plate (65), which is hexagonal. The inner wall of the cooling box (3) is provided with a transverse groove (66), and a lifting rod (67) is slidably connected to the inner wall of the transverse groove (66).

4. The replaceable cutter of a plastic pelletizer according to claim 1, characterized in that: The quick-release mechanism (7) includes a fixed frame (71) sleeved with the outer wall of the lifting rod (67). A limit rod (72) is fixedly connected to the upper surface of the fixed frame (71). There are several limit rods (72). A movable plate (73) is slidably connected to the outer wall of the limit rod (72). A telescopic rod (74) is fixedly connected to the upper surface of the fixed frame (71).

5. The replaceable cutter of a plastic pelletizer according to claim 4, characterized in that: The telescopic end of the fixed frame (71) is fixedly connected to the bottom of the movable plate (73). A pelletizing knife (75) is installed on the inner wall of the fixed frame (71). A fixing rod (76) is movably connected to the outer wall of the same end of the fixed frame (71) and the pelletizing knife (75).

6. The replaceable cutter of a plastic pelletizer according to claim 1, characterized in that: The inner wall of the cooling box (3) is fixedly connected to a pelletizing plate (8), and the pelletizing plate (8) is located near the pelletizing knife (75) directly below it. The outer wall of the pelletizing plate (8) is provided with a discharge port (9), and a receiving box (10) is placed on one side of the discharge port (9).

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