Particle diameter adjusting mechanism for plastic particle extruder

Abstract

This utility model discloses a particle diameter adjustment mechanism for a plastic particle extruder, relating to the field of plastic particle production. It includes an extrusion mechanism with an extrusion head at its end. One end of the extrusion head is connected to several detachable circular plates. Extrusion holes, which are circular and interconnected, are provided between the circular plates. A first connecting lug is fixedly installed on the outer side of each circular plate, and a second connecting lug is fixedly installed on the outer side of the extrusion head. A screw is inserted between the first and second connecting lugs, and a nut is threaded onto one end of the screw. By setting up circular plates and extrusion holes, and first removing the nut, then taking out the outermost circular plate, and reconnecting the nut to the screw, the radius of the extrusion holes in the extruder increases, allowing the device to extrude particles with larger diameters.

Description

Technical Field

[0001] This utility model relates to the field of plastic pellet production technology, and in particular to a pellet diameter adjustment mechanism for a plastic pellet extruder. Background Technology

[0002] Plastic pellet extruders are core equipment in polymer material processing. They are mainly used to melt and mix plastic raw materials such as resins, masterbatches, and additives, and then extrude and cut them into uniform pellets through a die. These pellets, as intermediate products, are widely used in subsequent processing techniques such as injection molding, blow molding, and extrusion molding.

[0003] A search revealed Chinese utility model patent CN222060876U, which discloses an extrusion molding device for plastic granules. The device includes a hot-melt mechanism, an extrusion tank, and a cutting and cooling box. A connecting square tube is located on the left side of the hot-melt mechanism, and its left end is fixedly connected to the outer wall of the extrusion tank. An extrusion mechanism is located on the top of the extrusion tank, and its bottom is fixedly connected to the top of the cutting and cooling box. A cooling box is movably connected to the bottom front of the cutting and cooling box. The device heats the inside of the hot-melt tank using an electric heating wire. A drive motor rotates a spiral blade inside the hot-melt tank, causing the molten plastic to be discharged into the extrusion tank through the connecting square tube.

[0004] However, the aforementioned patent can only produce plastic granules of one specification, which cannot meet the diverse market demand for plastic granules of different sizes. In view of this, this application proposes a granule diameter adjustment mechanism for a plastic granule extruder based on the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a particle diameter adjustment mechanism for a plastic particle extruder.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pellet diameter adjustment mechanism for a plastic pellet extruder includes an extrusion mechanism, an extrusion head at the end of the extrusion mechanism, a plurality of detachable circular plates connected to one end of the extrusion head, and extrusion holes provided between the plurality of circular plates. The extrusion holes are frustum-shaped and interconnected with each other.

[0008] A first connecting ear is fixedly installed on the outer side of the circular plate, and a second connecting ear is fixedly installed on the outer side of the extrusion head. A screw is inserted between the first connecting ear and the second connecting ear, and a nut is threaded onto one end of the screw.

[0009] Furthermore, a positioning ring is fixedly installed on the side of the circular plate near the extrusion head, and positioning grooves matching the positioning ring are provided on both the side of the circular plate away from the extrusion head and the side of the extrusion head near the circular plate.

[0010] Furthermore, the extrusion mechanism includes a barrel, an auger is rotatably installed inside the barrel, a motor is installed outside the barrel, a reducer is fixedly installed at the output end of the motor, the output end of the reducer is fixedly connected to the auger, and a feed hopper is provided above the barrel.

[0011] Furthermore, a positioning pin is fixedly installed on the inner side of the extrusion head, and a groove matching the positioning pin is provided at the end of the barrel near the extrusion head.

[0012] Furthermore, the barrel and the extrusion head are fixedly connected by a flange.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by setting up a circular plate and an extrusion hole, first removes the nut, then takes out the outermost circular plate, and reconnects the nut to the screw. At this time, the radius of the extrusion hole of the extruder increases accordingly, so that the device can extrude particles with larger diameters.

[0015] 2. This utility model, by setting positioning rings and positioning grooves, ensures the stability and accuracy of the round plates after installation by positioning them together and between the round plates and the extrusion head. This allows each round plate to be accurately installed in the predetermined position, avoiding deviation of the extrusion hole caused by improper installation. At the same time, the positioning rings can also act as a new sealing surface, effectively preventing material leakage from the gap between the extrusion hole and the round plate during the extrusion process, thus improving the sealing performance of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a particle diameter adjustment mechanism for a plastic particle extruder proposed in this utility model;

[0017] Figure 2 This is a front view schematic diagram of a particle diameter adjustment mechanism for a plastic particle extruder proposed in this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of a circular plate for a plastic pellet diameter adjustment mechanism for a plastic pellet extruder, as proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the installation of the positioning ring on the circular plate of a particle diameter adjustment mechanism for a plastic particle extruder according to the present invention.

[0020] Figure 5This is a schematic diagram of a circular plate for a plastic pellet diameter adjustment mechanism for a plastic pellet extruder, as proposed in this utility model.

[0021] Figure 6 This is a schematic diagram of the barrel of a plastic granule extruder with a granule diameter adjustment mechanism proposed in this utility model.

[0022] In the diagram: 1. Extrusion mechanism; 2. Extrusion head; 3. Circular plate; 4. Extrusion orifice; 5. First connecting ear; 6. Second connecting ear; 7. Screw; 8. Nut; 9. Positioning ring; 10. Positioning groove; 11. Barrel; 12. Screw; 13. Motor; 14. Reducer; 15. Feed hopper; 16. Positioning pin; 17. Slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-3 A pellet diameter adjustment mechanism for a plastic pellet extruder includes an extrusion mechanism 1, an extrusion head 2 at the end of the extrusion mechanism 1, a plurality of detachable circular plates 3 connected to one end of the extrusion head 2, and an extrusion hole 4 between the plurality of circular plates 3. The extrusion hole 4 is frustum-shaped and interconnected with each other.

[0025] A first connecting ear 5 is fixedly installed on the outer side of the circular plate 3, and a second connecting ear 6 is fixedly installed on the outer side of the extrusion head 2. A screw 7 is inserted between the first connecting ear 5 and the second connecting ear 6, and a nut 8 is threadedly connected to one end of the screw 7.

[0026] When it is necessary to extrude particles of different diameters, first remove nut 8, then take out the outermost circular plate 3, and reconnect nut 8 to screw 7. At this time, the radius of the extrusion orifice 4 of the extruder increases, so that the device can extrude particles with larger diameters.

[0027] Reference Figure 3-5 Specifically: a positioning ring 9 is fixedly installed on the side of the circular plate 3 near the extrusion head 2. Positioning grooves 10 matching the positioning ring 9 are provided on both the side of the circular plate 3 away from the extrusion head 2 and the side of the extrusion head 2 near the circular plate 3. The circular plates 3 are positioned with each other and with the extrusion head 2 through the positioning ring 9 and the positioning groove 10, ensuring the stability and accuracy of the circular plates 3 after installation. This ensures that each circular plate 3 can be accurately installed in the predetermined position, avoiding deviation of the extrusion hole 4 due to improper installation. At the same time, the positioning ring 9 can also act as a new sealing surface, effectively preventing material from leaking from the gap between the extrusion hole 4 and the circular plate 3 during the extrusion process, thus improving the sealing performance of the equipment.

[0028] Reference Figure 1-5 Specifically, the extrusion mechanism 1 includes a barrel 11, inside which an auger 12 is rotatably mounted. A motor 13 is located outside the barrel 11, and a reducer 14 is fixedly mounted at the output end of the motor 13. The output end of the reducer 14 is fixedly connected to the auger 12. A feed hopper 15 is located above the barrel 11. Material is placed into the feed hopper 15, and the motor 13 is started. The motor 13 drives the reducer 14 to rotate, which in turn drives the auger 12. The material is extruded from the extrusion orifice 4 under the transport of the auger 12, forming plastic granules of the desired diameter. During the extrusion process, the final extrusion radius of the extrusion orifice 4 can be changed by adjusting the number of circular plates 3, thereby adjusting the diameter of the extruded granules.

[0029] Reference Figure 3 , Figure 6 Specifically: a positioning pin 16 is fixedly installed on the inner side of the extrusion head 2, and a slot 17 matching the positioning pin 16 is provided at one end of the barrel 11 near the extrusion head 2. The extrusion head 2 is connected to the barrel 11 through the positioning pin 16 and the slot 17.

[0030] Reference Figure 2 Specifically, the barrel 11 and the extrusion head 2 are fixedly connected by a flange.

[0031] Working principle: When it is necessary to extrude particles of different diameters, first remove the nut 8, then take out the outermost circular plate 3, and reconnect the nut 8 to the screw 7. At this time, the radius of the extrusion orifice 4 of the extruder increases, so that the device can extrude particles with larger diameters.

[0032] Material is placed into the feed hopper 15, and the motor 13 is started. The motor 13 drives the reducer 14 to rotate, and the reducer 14 drives the auger 12 to rotate. The material is extruded from the extrusion hole 4 under the transport of the auger 12, forming plastic granules of the required diameter. During the extrusion process, the final extrusion radius of the extrusion hole 4 can be changed by adjusting the number of circular plates 3, thereby adjusting the diameter of the extruded granules. The circular plates 3 are positioned with each other and with the extrusion head 2 by positioning rings 9 and positioning grooves 10, ensuring the stability and accuracy of the circular plates 3 after installation. This ensures that each circular plate 3 can be accurately installed in the predetermined position, avoiding deviation of the extrusion hole 4 due to improper installation. At the same time, the positioning rings 9 also act as a new sealing surface, effectively preventing material leakage from the gap between the extrusion hole 4 and the circular plates 3 during the extrusion process, improving the sealing performance of the equipment. The extrusion head 2 is connected to the barrel 11 by positioning pins 16 and slots 17.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0034] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent 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 limitations on this patent.

Claims

1. A particle diameter adjusting mechanism for a plastic particle extruder, characterized by, It includes an extrusion mechanism (1), an extrusion head (2) is provided at the end of the extrusion mechanism (1), a plurality of detachable circular plates (3) are connected to one end of the extrusion head (2), and an extrusion hole (4) is provided between the plurality of circular plates (3). The extrusion hole (4) is frustum-shaped and the extrusion holes (4) are interconnected. A first connecting ear (5) is fixedly installed on the outside of the circular plate (3), and a second connecting ear (6) is fixedly installed on the outside of the extrusion head (2). A screw (7) is inserted between the first connecting ear (5) and the second connecting ear (6), and a nut (8) is threadedly connected to one end of the screw (7).

2. The particle diameter adjusting mechanism for a plastic particle extruder according to claim 1, characterized by, A positioning ring (9) is fixedly installed on the side of the circular plate (3) near the extruder (2). Positioning grooves (10) matching the positioning ring (9) are provided on both the side of the circular plate (3) away from the extruder (2) and the side of the extruder (2) near the circular plate (3).

3. The granule diameter adjusting mechanism for a plastic granulator according to claim 1, wherein The extrusion mechanism (1) includes a barrel (11), an auger (12) is rotatably installed inside the barrel (11), a motor (13) is provided outside the barrel (11), a reducer (14) is fixedly installed at the output end of the motor (13), the output end of the reducer (14) is fixedly connected to the auger (12), and a feed hopper (15) is provided above the barrel (11).

4. The particle diameter adjusting mechanism for a plastic particle extruder according to claim 3, characterized by A positioning pin (16) is fixedly installed on the inner side of the extrusion head (2), and a slot (17) matching the positioning pin (16) is provided on the barrel (11) near the end of the extrusion head (2).

5. The particle diameter adjusting mechanism for a plastic particle extruder according to claim 3, characterized by The barrel (11) and the extruder (2) are fixedly connected by a flange.

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