Granulating device of plastic granulator

Abstract

The utility model relates to the field of pelletizing of a pelletizer, in particular to a pelletizing device of a plastic pelletizer, which adopts the technical scheme that the pelletizing device comprises a die head, a support rod and a top seat, a first filter plate and a second filter plate are movably inserted in the die head, and a connecting assembly is arranged at the lower end of the top seat; the connecting assembly is located between the first filter plate and the second filter plate, and limiting assemblies are symmetrically arranged on the two sides of the outer end of the die head. When the first filter plate descends in the inner cavity of the die head, the second filter plate is in a rising state, at the moment, the first filter plate can be used for filtering molten plastic in the inner cavity of the die head, and when the second filter plate descends in the inner cavity of the die head, the first filter plate can rise upwards, so that the used first filter plate is convenient to clean; and the filter screen can be taken out without repeated shutdown and startup.

Description

Technical Field

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

[0002] Plastic pelletizing and pelletizing equipment is an indispensable part of the plastic processing industry. It cuts molten plastic into pellets for subsequent processing and use. Currently, existing plastic pelletizing and pelletizing equipment mainly consists of a feeding system, pelletizing device, cooling system, discharge system and control system.

[0003] Feeding system: It usually consists of a feeding hopper, a feeding screw or a feeding pipe. When the material enters the inner cavity of the plastic pelletizer through the feeding hopper, the feeding screw rotates and pushes the molten plastic forward. It is mainly responsible for conveying the molten plastic or plastic raw materials to the pelletizing area of ​​the pelletizing device.

[0004] Pelletizing device: Includes pelletizing blade and die head, filter screen. The pelletizing blade consists of blades, a cutter shaft, and a cutter holder. The blades are mounted on the cutter holder, and the cutter shaft is mounted on the end of the cutter holder away from the die head. The cutter shaft is driven by a motor through a transmission system (usually composed of a reducer, transmission belt, or gears). The die head surface has holes, the shape and size of which are designed according to the desired shape and size of the pellets. The filter screen filters the molten plastic inside the die head. Under pressure, the molten plastic is extruded through the holes on the die head surface, forming strips or columns of plastic. At this time, the motor drives the blades to rotate through the cutter shaft, cutter holder, and other components to cut the plastic into pellets (refer to existing technology). Figure 6 ).

[0005] Cooling system: mainly includes cooling water, cooling pipes, water pumps, etc. The water pump draws cooling water and circulates it in the cooling pipes to absorb the heat generated during pelletizing. The pellets after pelletizing are cooled by contact with or in the cooling water, which rapidly reduces their temperature (the cut pellets are cooled in the water ring and carried out of the pelletizing area), so that the cut pellets can solidify quickly and prevent the pellets from sticking together.

[0006] The discharge system typically consists of a discharge pipe, a vibrating screen, and a centrifugal dryer. The chopped granules are discharged through the discharge pipe from the pelletizing device. The vibrating screen filters the granules, removing those that are too small or too large. The centrifugal dryer uses centrifugal force and hot air to remove moisture from the surface of the granules, ensuring they meet the required dryness.

[0007] Control system: It usually consists of a control cabinet, PLC, sensors (such as temperature sensors, pressure sensors, etc.), operation panel, etc. It is mainly used to control the operating parameters of the pelletizing device, such as pelletizing speed, pelletizing temperature, cooling system flow rate, etc., to ensure the stability of the pelletizing process and the consistency of product quality.

[0008] However, when using a filter screen to filter molten plastic inside the die head, the molten plastic can easily clog the filter screen. In existing technology, it is usually necessary to shut down the entire device, then use a hydraulic cylinder to pull the filter screen upwards from inside the die head, and then manually clean the filter screen. After the filter screen is cleaned, the hydraulic cylinder pushes the filter screen back into the die head, and finally the machine is turned on again for filtration. This method requires constant starting and stopping, which not only affects the lifespan of the entire device but also affects work efficiency.

[0009] Therefore, it is necessary to invent a pelletizing device for a plastic pelletizer. Utility Model Content

[0010] The purpose of this invention is to solve the problems mentioned in the background section.

[0011] To achieve the above objectives, this utility model provides the following technical solution: a plastic pelletizing machine pelletizing device, comprising a die head, support rods, and a top seat. Support rods are fixedly installed on both sides of the upper end of the die head, and a top seat is fixedly installed on the upper end of the support rods. A first filter plate and a second filter plate are movably inserted into the die head. A connecting component is provided at the lower end of the top seat, and the connecting component is located between the first filter plate and the second filter plate. Limiting components are symmetrically provided on both sides of the outer end of the die head.

[0012] Based on the above features: the first filter plate and the second filter plate can be used alternately to filter molten plastic without stopping the machine, and when the first filter plate or the second filter plate is lowered and inserted into the inner cavity of the die head, the limiting component can limit the first filter plate or the second filter plate on both sides to prevent the first filter plate or the second filter plate from loosening and detaching.

[0013] Preferably, the first filter plate and the second filter plate have the same structure. Both the upper sides of the first filter plate and the second filter plate are symmetrically welded with lugs. The lugs are provided with positioning holes. A frame plate is fixedly installed on the upper sides of the first filter plate and the second filter plate.

[0014] Based on the above features: the first filter plate and the second filter plate are connected to the connecting assembly via a frame plate, which facilitates the lifting and lowering adjustment of the first filter plate and the second filter plate, while the limiting assembly can press on the lug to limit the lowering of the first filter plate or the second filter plate.

[0015] Preferably, the frame plate has a slot in the middle, and the upper end of the frame plate has symmetrical movable holes on both sides, with a positioning pin movably inserted into the inner side of the movable hole.

[0016] Based on the above features: the locating pin can fix the connection between the frame plate and the connecting component, and it can also fix the connection between the limiting component and the lug.

[0017] Preferably, the connecting assembly includes a connecting plate and guide grooves symmetrically opened on both sides of the connecting plate, and guide plate A and guide plate B are movably inserted into the guide grooves.

[0018] Based on the above features: guide plate A and guide plate B are inserted into the guide groove in opposite directions, which facilitates the lifting and lowering adjustment of guide plate A and guide plate B on both sides of the connecting plate.

[0019] Preferably, the connecting plate has symmetrical straight grooves at both ends, a partition plate is fixedly installed in the middle of the inner cavity of the connecting plate, and magnets A are symmetrically installed on both sides of the partition plate.

[0020] Based on the above features: the straight groove can guide and limit the guide plate A and guide plate B, and the partition plate can divide the inner cavity of the connecting plate into two.

[0021] Preferably, the guide plate A and guide plate B have the same structure, and the guide plate A and guide plate B have symmetrical connecting holes on the side surface away from the connecting plate. A magnet B is fixedly installed on the other side of the guide plate A and guide plate B, and pull plates are symmetrically welded to both ends of the guide plate A and guide plate B near the magnet B.

[0022] Based on the above features: the guide plate A and guide plate B can be pushed back into the inner side of the guide groove by the pull plate. When the guide plate A is aligned with the frame plate above the first filter plate, the pull plates on both sides of the guide plate A can be released. At this time, magnet A will automatically rebound magnet B, so that the guide plate A extends outward through the guide groove and inserts into the slot in the middle of the frame plate.

[0023] Preferably, the limiting component includes a base plate and a connecting shaft mounted on the upper end of the base plate. A limiting plate is rotatably connected to the upper end of the connecting shaft, and an insertion hole is provided on the side surface of the limiting plate away from the connecting shaft.

[0024] Based on the above features: the limiting plate can be rotated and adjusted above the connecting shaft, which makes it convenient for the limiting plate to be pressed and fixed above the lug.

[0025] The beneficial effects of this utility model are:

[0026] 1. By setting up the first filter plate and the second filter plate, the molten plastic can be filtered alternately without stopping the machine. When the first filter plate descends into the inner cavity of the die head, the second filter plate will be in the raised state. At this time, the first filter plate can be used to filter the molten plastic in the inner cavity of the die head. When the second filter plate descends into the inner cavity of the die head, the first filter plate will rise up, which makes it convenient to clean the first filter plate after use without having to repeatedly stop and start the machine to remove the filter screen.

[0027] 2. The fixing effect can be improved by setting the limiting component. When the first filter plate or the second filter plate descends into the inner cavity of the mold head, the lugs on both sides of the first filter plate or the second filter plate will be aligned with the limiting component. At this time, the limiting plate can be rotated to the top of the lugs, and then the insertion hole and the positioning hole are aligned. Then, the positioning pin is inserted into the insertion hole and the positioning hole so that the limiting plate can be pressed on the top of the lugs to limit and fix the descending first filter plate or the second filter plate. Attached Figure Description

[0028] Figure 1 A diagram showing the first filter plate in the raised state of the pelletizing device of a plastic pelletizer provided by this utility model;

[0029] Figure 2 A diagram showing the second filter plate in the raised state of the pelletizing device of a plastic pelletizer provided by this utility model;

[0030] Figure 3 A schematic diagram of the structure of the first filter plate, the second filter plate, and the connecting assembly of a plastic pelletizer pelletizing device provided by this utility model;

[0031] Figure 4 A disassembled view of the second filter plate and connecting assembly of a plastic pelletizer pelletizing device provided by this utility model;

[0032] Figure 5 A split view of the connecting plate and guide plate A of the pelletizing device of a plastic pelletizer provided by this utility model;

[0033] Figure 6 The present invention provides a structural diagram of an existing product of a plastic pelletizing and pelletizing device.

[0034] In the diagram: 1. Die head; 2. First filter plate; 21. Lug; 22. Positioning hole; 23. Frame plate; 231. Slot; 232. Movable hole; 233. Positioning pin; 3. Second filter plate; 4. Support rod; 5. Top seat; 6. Connecting assembly; 61. Connecting plate; 611. Straight groove; 612. Partition plate; 613. Magnet A; 62. Guide groove; 63. Guide plate A; 631. Connecting hole; 632. Magnet B; 633. Pull plate; 64. Guide plate B; 7. Limiting assembly; 71. Base plate; 72. Connecting shaft; 73. Limiting plate; 74. Insertion hole. Detailed Implementation

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] See attached document Figure 1-6This utility model provides a plastic pelletizing device, including a die head 1 (the die head 1 is installed at the discharge end of the pelletizer, and a pelletizing device is installed at the other end of the die head 1). A filter element (including a first filter plate 2 and a second filter plate 3) is inserted into the inner side of the die head 1. Support rods 4 are fixedly welded to both sides of the upper end of the die head 1. A top seat 5 is fixedly installed on the upper end of the support rods 4. A connecting component 6 is provided at the lower end of the top seat 5. A hole is opened in the middle of the top seat 5. A hydraulic cylinder is fixedly fixed to the middle of the upper end of the top seat 5 by bolts. A lifting plate is provided at the lower end of the top seat 5. The telescopic end of the lower end of the hydraulic cylinder passes through the hole in the middle of the top seat 5 and is connected and fixed to the lifting plate. Three connecting rods are fixedly welded to the lower end of the lifting plate. The lower ends of the three connecting rods are fixedly connected to the upper end of the connecting component 6, which facilitates the hydraulic cylinder to drive the connecting component 6 to lift and adjust through the lifting plate and the three connecting rods, thereby improving the stability of lifting.

[0037] Two insertable slots are aligned on the upper end of the mold head 1. The first filter plate 2 and the second filter plate 3 are inserted into the inner cavity of the mold head 1 from the two slots from top to bottom. The first filter plate 2 and the second filter plate 3 have the same structure. The surfaces of the first filter plate 2 and the second filter plate 3 are provided with rectangular array-shaped filter holes (the diameter of the filter holes is not specifically limited in this application and can be set as needed). The lower end of the first filter plate 2 and the second filter plate 3 is provided with a sealing plate to prevent the molten plastic from leaking after the first filter plate 2 and the second filter plate 3 are raised. The upper end of the first filter plate 2 and the second filter plate 3 is fixedly installed with a frame plate 23 to facilitate the connection and fixation of the first filter plate 2 and the second filter plate 3 with the connecting assembly 6.

[0038] The connecting assembly 6 includes a connecting plate 61 and guide grooves 62 symmetrically opened on both sides of the connecting plate 61. The lower ends of three connecting rods are fixedly connected to the upper ends of the connecting plate 61. A guide plate A63 is movably inserted into the guide groove 62 on one side of the connecting plate 61, and a guide plate B64 is movably inserted into the guide groove 62 on the other side of the connecting plate 61. The guide plates A63 and B64 are arranged symmetrically in opposite directions. The guide plates A63 and B64 have the same structure. The surfaces of the guide plates A63 and B64 away from the connecting plate 61 are symmetrically provided with connecting holes 631. A magnet B632 is fixedly installed on the other side of the guide plates A63 and B64. Pull plates 633 are symmetrically welded to both ends of the guide plates A63 and B64 near the magnet B632. The magnet B632 and the pull plates 633 are located inside the connecting plate 61. A symmetrical straight groove 611 is provided, through which a pull plate 633 moves. This facilitates the operator to push the pull plate 633 to move on both sides of the outer end of the connecting plate 61, and also prevents the guide plate A63 and guide plate B64 from disengaging from the guide groove 62. A partition plate 612 is fixedly installed in the middle of the inner cavity of the connecting plate 61, which can divide the inner cavity of the connecting plate 61 into two. Magnets A613 and B632 are symmetrically installed on both sides of the partition plate 612. The magnetic poles of magnets A613 and B632 are opposite to each other and repel each other. When the pull plate 633 pushes the guide plate A63 or guide plate B64 back into the inner cavity of the guide groove 62, magnet B632 will approach magnet A613. When the pull plate 633 is released, magnet A613 will bounce back magnet B632. At this time, guide plate A63 or guide plate B64 will extend outward through the guide groove 62.

[0039] A slot 231 is provided in the middle of the frame plate 23 to facilitate the insertion of the guide plate A63 or the guide plate B64 into the slot 231. The upper end of the frame plate 23 has symmetrical movable holes 232 on both sides. A positioning pin 233 is movably inserted into the inner side of the movable hole 232. The movable hole 232 and the connecting hole 631 have the same diameter. When the guide plate A63 or the guide plate B64 is inserted into the slot 231, the movable hole 232 and the connecting hole 631 are aligned, and finally the positioning pin 233 is used to pass through.

[0040] Based on the above structural effects, this application includes the following embodiments:

[0041] Reference Figure 1First, the first filter plate 2 and the second filter plate 3 are inserted into the inner cavity of the mold head 1 from top to bottom through the two slots above the mold head. Then, the hydraulic cylinder drives the connecting plate 61 to descend via the lifting plate. During this process, the guide plate A63 and the guide plate B64 are pushed back to the inside of the guide groove 62 by the pull plate 633. When the guide plate A63 is aligned with the frame plate 23 above the first filter plate 2, the pull plates 633 on both sides of the guide plate A63 can be released. At this time, the magnet A613 will automatically spring back the magnet B632, so that the guide plate A63... 63 extends outward through the guide groove 62 and is inserted into the slot 231 in the middle of the frame plate 23. When the connecting hole 631 on the surface of the guide plate A63 is aligned with the movable hole 232 on the surface of the frame plate 23, the positioning pin 233 is inserted through. Then, the hydraulic cylinder can drive the connecting plate 61 to rise through the lifting plate. The connecting plate 61 will also pull the first filter plate 2 to rise through the guide plate A63. The second filter plate 3 is inserted into the inner cavity of the mold head 1 and remains stationary. At this time, the second filter plate 3 can filter the molten plastic in the inner cavity of the mold head 1.

[0042] When cleaning the first filter plate 2 is required, please refer to... Figure 2 The hydraulic cylinder again lowers the connecting plate 61 via the lifting plate, causing the connecting plate 61 to lower the first filter plate 2 via the guide plate A63 and insert it into the inner cavity of the mold head 1 (during this process, the guide plate B64 can be pushed back into the guide groove 62). After the first filter plate 2 is fully inserted, the positioning pin 233 between the guide plate A63 and the frame plate 23 can be removed. Then, the guide plate A63 is pushed back into the guide groove 62 via the pull plate 633, separating the guide plate A63 from the upper end of the first filter plate 2. At the same time, the guide plate B64 is released, allowing the guide plate B64 to... The guide plate 64 extends outward and inserts into the middle of the frame plate 23 above the second filter plate 3. When the connecting hole 631 on the surface of the guide plate B64 is aligned with the movable hole 232 on the surface of the frame plate 23, the positioning pin 233 is inserted through it. Finally, the hydraulic cylinder can drive the connecting plate 61 to rise through the lifting plate. The connecting plate 61 will also pull the second filter plate 3 to rise through the guide plate B64. Meanwhile, the first filter plate 2 is inserted into the inner cavity of the mold head 1 and remains stationary. At this time, the first filter plate 2 can filter the molten plastic, while the second filter plate 3 can rise and detach from the inner cavity of the mold head 1 for cleaning.

[0043] The present invention provides a plastic pelletizing and pelletizing device, which further includes the following structure: A limiting component 7 is symmetrically arranged on both sides of the outer end of the die head 1; lugs 21 are symmetrically welded on both sides of the upper end of the first filter plate 2 and the second filter plate 3; positioning holes 22 are opened on the surface of the lugs 21 to facilitate the limiting component 7 to limit the first filter plate 2 or the second filter plate 3 that is inserted into the die head 1; the limiting component 7 includes a base plate 71 and a connecting shaft 72 installed on the upper end of the base plate 71; the base plate 71 is fixedly welded to both sides of the outer end of the die head 1; a limiting plate 73 is rotatably connected to the upper end of the connecting shaft 72; an insertion hole 74 is opened on the side of the limiting plate 73 away from the connecting shaft 72; the diameter of the insertion hole 74 and the positioning hole 22 is the same as the movable hole 232 and the connecting hole 631 of the positioning hole 22 to facilitate the penetration of the positioning pin 233.

[0044] Based on the above structural effects, this application includes the following embodiments:

[0045] See attached document Figure 1-3 Before the first filter plate 2 and the second filter plate 3 are installed, the limiting plate 73 is rotated first so that the side of the limiting plate 73 with the insertion hole 74 is away from the mold head 1. When the first filter plate 2 rises and the second filter plate 3 falls, the lugs 21 on both sides of the upper part of the second filter plate 3 will be aligned with the limiting component 7. At this time, the limiting plate 73 close to both sides of the second filter plate 3 can be rotated. When the limiting plate 73 is rotated above the lugs 21, the insertion hole 74 and the positioning hole 22 are aligned. Since the lowered second filter plate 3 does not need to be connected to the guide plate B64, the corresponding positioning pin 233 can be inserted into the insertion hole 74 and the positioning hole 22 so that the limiting plate 73 can be pressed on the upper part of the lugs 21 to limit the second filter plate 3.

[0046] When the first filter plate 2 descends and the second filter plate 3 rises, the lugs 21 on both sides of the top of the first filter plate 2 will align with the other two limiting components 7. At this time, the limiting plates 73 near the sides of the first filter plate 2 can be rotated. When the limiting plates 73 are rotated above the lugs 21, the insertion holes 74 and positioning holes 22 are aligned. Since the descending first filter plate 2 does not need to be connected to the guide plate A63, the corresponding positioning pins 233 can be inserted into the insertion holes 74 and positioning holes 22 so that the limiting plates 73 can be pressed against the lugs 21 to limit the first filter plate 2.

[0047] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A pelletizing device for a plastic pelletizer, comprising a die head (1), support rods (4), and a top seat (5), wherein support rods (4) are fixedly installed on both sides of the upper end of the die head (1), and a top seat (5) is fixedly installed on the upper end of the support rods (4), characterized in that: The mold head (1) is movably connected to a first filter plate (2) and a second filter plate (3). A connecting component (6) is provided at the lower end of the top seat (5). The connecting component (6) is located between the first filter plate (2) and the second filter plate (3). Limiting components (7) are symmetrically provided on both sides of the outer end of the mold head (1).

2. The pelletizing device for a plastic pelletizer according to claim 1, characterized in that: The first filter plate (2) and the second filter plate (3) have the same structure. The first filter plate (2) and the second filter plate (3) are symmetrically welded with lugs (21) on both sides of the upper end. The lugs (21) are provided with positioning holes (22) on the surface. The first filter plate (2) and the second filter plate (3) are fixedly installed with frame plates (23) on the upper end.

3. The pelletizing device for a plastic pelletizer according to claim 2, characterized in that: The frame plate (23) has a slot (231) in the middle, and movable holes (232) are symmetrically opened on both sides of the upper end of the frame plate (23). A positioning pin (233) is movably inserted into the inner side of the movable hole (232).

4. The pelletizing device for a plastic pelletizer according to claim 1, characterized in that: The connecting component (6) includes a connecting plate (61) and guide grooves (62) symmetrically opened on both sides of the connecting plate (61). Guide plate A (63) and guide plate B (64) are movably inserted into the guide grooves (62).

5. The pelletizing device for a plastic pelletizer according to claim 4, characterized in that: The connecting plate (61) has symmetrical straight grooves (611) at both ends. A partition plate (612) is fixedly installed in the middle of the inner cavity of the connecting plate (61). Magnets A (613) are symmetrically installed on both sides of the partition plate (612).

6. The pelletizing device for a plastic pelletizer according to claim 4, characterized in that: The guide plate A (63) and guide plate B (64) have the same structure. The guide plate A (63) and guide plate B (64) have symmetrical connecting holes (631) on the side surface away from the connecting plate (61). The magnet B (632) is fixedly installed on the other side of the guide plate A (63) and guide plate B (64). The guide plate A (63) and guide plate B (64) have symmetrical pull plates (633) welded to both ends on the side of the guide plate A (63) and guide plate B (64) near the magnet B (632).

7. The pelletizing device for a plastic pelletizer according to claim 1, characterized in that: The limiting component (7) includes a base plate (71) and a connecting shaft (72) mounted on the upper end of the base plate (71). A limiting plate (73) is rotatably connected to the upper end of the connecting shaft (72). An insertion hole (74) is provided on the side surface of the limiting plate (73) away from the connecting shaft (72).

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