A high-precision plastic pellet extruder
By employing a combination design of a mixing drum and a heating jacket in the plastic extruder, the problems of uneven heating and limited specifications have been solved, enabling the production of high-precision and multi-specification plastic granules.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 温州岳虹塑料机械有限公司
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-30
AI Technical Summary
Existing plastic extruders suffer from uneven heating, resulting in poor pellet production and the ability to produce only one type of plastic pellets, thus limiting their practicality.
The design employs a combination of a mixing drum and a heating jacket. The mixing motor drives the mixing rod for preheating, and the heating jacket inside the extrusion drum further heats the material, ensuring that the raw material is heated evenly to the appropriate temperature. The extrusion orifice can be adjusted by an adjustable extrusion cap and a drive motor to produce granules of different specifications.
It achieves uniform heating and production diversity, improving the production precision and practicality of plastic granules.
Smart Images
Figure CN224426090U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of extruder technology, specifically a high-precision plastic granule extruder. Background Technology
[0002] In plastic extrusion molding equipment, the plastic extruder is usually called the main machine, while the downstream equipment that is matched with it, the plastic extrusion molding machine, is called the auxiliary machine. After more than 100 years of development, the plastic extruder has evolved from the original single screw to twin screw, multi screw, and even screwless machines.
[0003] A search revealed that patent application CN218519161U discloses a high-precision twin-screw extruder for plastic granules, including a mounting base. Four motor bases arranged in a rectangular array are fixedly mounted on the upper surface of the mounting base near the rear end. A drive motor is fixedly mounted on the upper surface of each motor base. A raised platform is fixedly connected to the upper surface of the mounting base, located behind the drive motors. A motor drive platform is fixedly connected to the upper surface of the raised platform. This allows for heating of the raw materials, improving the precision of plastic granule production.
[0004] However, due to the heating barrel setting, extrusion and heating occur simultaneously, resulting in uneven heating and short heating time. Some granules cannot be heated to the required temperature, thus affecting the granule extrusion effect. In addition, since one motor drives two sets of screws, only one type of plastic granules can be produced, resulting in low practicality.
[0005] Therefore, we propose a high-precision plastic granule extruder. Utility Model Content
[0006] To address the shortcomings of existing technologies, this invention provides a high-precision plastic granule extruder, which solves the problems of poor heating effect and low practicality of existing devices.
[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a high-precision plastic granule extruder, including a fixed frame, and a stirring cylinder positioned opposite to the fixed frame is mounted on top of the fixed frame;
[0008] The top surface of the mixing drum is fitted with a drum cover. A heating jacket A of the same specifications is fixedly installed on the outer wall of the mixing drum. A stirring motor is fixedly installed on the top surface of the drum cover. A rotating rod is fitted on the output end of the stirring motor. Evenly distributed stirring rods are fixedly installed on the outer wall of the rotating rod. A connected discharge pipe is fitted on the bottom surface of the mixing drum. Two sets of opposing separation pipes are fixedly installed on the bottom surface of the discharge pipe. An extrusion cylinder of the same specifications and connected to each other is fixedly installed on the bottom surface of the separation pipe. A heating jacket B of the same specifications is fixedly installed on the outer wall of the extrusion cylinder. Electric heating components are fitted inside the heating jackets A and B.
[0009] A drive motor is fixedly installed on the right side of the extrusion cylinder. A spiral rod located inside the extrusion cylinder is mounted on the output end of the drive motor. An extrusion cap of the same specification is threaded onto the left side of the extrusion cylinder. The extrusion cap has evenly distributed extrusion holes on its left side. A collection box with a corresponding position is mounted on the top surface of the fixing frame.
[0010] Preferably, four sets of connecting rods in opposite positions are fixedly installed between the heating jacket A and the fixing frame, which can support and fix the stirring cylinder and improve stability.
[0011] Preferably, four sets of opposing fixing rods are fixedly installed on the top surface of the fixing frame, and a fixing sleeve located on the outer wall of the extrusion cylinder is fixed to the top of the fixing rod, so as to support and fix the extrusion cylinder.
[0012] Preferably, the bottom of the mixing drum is funnel-shaped, which facilitates the complete discharge of raw materials inside the mixing drum.
[0013] Preferably, the outer wall of the discharge pipe is equipped with a mechanical valve of a suitable specification, so as to control the discharge speed.
[0014] Preferably, a controller is mounted on the right side of the mounting bracket, which facilitates the control of each component.
[0015] 1. This high-precision plastic granule extruder, through the setting of a mixing drum, heating jacket A and heating jacket B, heating jacket A can preheat the raw material in the mixing drum, the mixing motor drives the mixing rod to rotate, improving the uniformity of heating, and heating jacket B can further heat the raw material in the extrusion drum, ensuring that the raw material is heated to a suitable temperature, with good heating effect and improved granule production precision.
[0016] 2. Simultaneously, through the setting of the drive motor and the extrusion cap, extrusion caps of different sizes can be installed on the left side of the extrusion cylinder by threads according to the needs. Extrusion holes of different sizes can produce plastic granules of different specifications. The two sets of drive motors can also adjust the extrusion efficiency separately, improving practicality. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the separation tube of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the extrusion cap of this utility model;
[0020] Figure 4 This is a schematic diagram of the structure of the stirring rod of this utility model.
[0021] In the diagram: 1. Fixing frame; 2. Mixing drum; 3. Drum cover; 4. Heating jacket A; 5. Mixing motor; 6. Rotating rod; 7. Mixing rod; 8. Discharge pipe; 9. Separation pipe; 10. Extrusion drum; 11. Heating jacket B; 12. Drive motor; 13. Screw rod; 14. Extrusion cover; 15. Extrusion orifice; 16. Collection box; 17. Connecting rod; 18. Fixing rod; 19. Fixing sleeve; 20. Mechanical valve; 21. Controller. Detailed Implementation
[0022] 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.
[0023] Example 1: As Figure 1-4 As shown: A cylinder cover 3 is fitted on the top surface of the mixing drum 2. A heating jacket A4 of the same specifications is fixedly installed on the outer wall of the mixing drum 2. A stirring motor 5 is fixedly installed on the top surface of the cylinder cover 3. A rotating rod 6 is fitted on the output end of the stirring motor 5. Evenly distributed stirring rods 7 are fixedly installed on the outer wall of the rotating rod 6. A connected discharge pipe 8 is fitted on the bottom surface of the mixing drum 2. Two sets of opposing separation pipes 9 are fixedly installed on the bottom surface of the discharge pipe 8. An extrusion cylinder 10 of the same specifications and connected to the bottom surface of the separation pipe 9 is fixedly installed. A heating jacket B11 of the same specification is fixedly installed on the outer wall of the cylinder 10. The heating jacket A4 and the heating jacket B11 are equipped with electric heating components. Through the arrangement of the stirring cylinder 2, the heating jacket A4 and the heating jacket B11, the heating jacket A4 can preheat the raw material in the stirring cylinder 2. The stirring motor 5 drives the stirring rod 7 to rotate, which improves the uniformity of heating. The heating jacket B11 can further heat the raw material in the extrusion cylinder 10, ensuring that the raw material is heated to a suitable temperature, with good heating effect and improved precision of pellet production.
[0024] Example 2: As Figure 2-4 As shown: A drive motor 12 is fixedly installed on the right side of the extrusion cylinder 10. A screw rod 13 located inside the extrusion cylinder 10 is mounted on the output end of the drive motor 12. An extrusion cap 14 of the same specification is threaded onto the left side of the extrusion cylinder 10. The left side of the extrusion cap 14 has evenly distributed extrusion holes 15. A collection box 16 with the opposite position is mounted on the top surface of the fixing frame 1. Through the setting of the drive motor 12 and the extrusion cap 14, extrusion caps 14 of different sizes can be threaded onto the left side of the extrusion cylinder 10 as needed. Extrusion holes 15 of different sizes can produce plastic granules of different specifications. The two sets of drive motors 12 can also adjust the extrusion efficiency separately, improving practicality.
[0025] Example 3: As Figure 2-3 As shown: The bottom of the mixing drum 2 is funnel-shaped, which facilitates the complete discharge of the raw materials inside the mixing drum 2.
[0026] The working principle and usage process of this utility model are as follows: When the device needs to work, the heating jacket A4 can preheat the raw material in the stirring cylinder 2, the stirring motor 5 drives the stirring rod 7 to rotate, improving the uniformity of heating, and the heating jacket B11 can further heat the raw material in the extrusion cylinder 10 to ensure that the raw material is heated to a suitable temperature, resulting in good heating effect and improving the precision of granule production. At the same time, according to the requirements, extrusion caps 14 of different sizes can be installed on the left side of the extrusion cylinder 10 by threads. Extrusion holes 15 of different sizes can produce plastic granules of different specifications. The two sets of drive motors 12 can also adjust the extrusion efficiency separately, improving practicality.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A high-precision plastic granule extruder, comprising a fixed frame (1), wherein a stirring cylinder (2) is mounted on the fixed frame (1) and positioned opposite each other. Its features are: The top surface of the mixing drum (2) is fitted with a drum cover (3). A heating sleeve A (4) of the same specification is fixedly installed on the outer wall of the mixing drum (2). A stirring motor (5) is fixedly installed on the top surface of the drum cover (3). A rotating rod (6) is fitted on the output end of the stirring motor (5). A uniformly distributed stirring rod (7) is fixedly installed on the outer wall of the rotating rod (6). A connected discharge pipe (8) is fitted on the bottom surface of the mixing drum (2). Two sets of oppositely positioned separation pipes (9) are fixedly installed on the bottom surface of the discharge pipe (8). An extrusion cylinder (10) of the same specification and connected to the bottom surface of the separation pipe (9) is fixedly installed. A heating sleeve B (11) of the same specification is fixedly installed on the outer wall of the extrusion cylinder (10). An electric heating component is fitted inside the heating sleeve A (4) and the heating sleeve B (11). A drive motor (12) is fixedly installed on the right side of the extrusion cylinder (10). A screw rod (13) located inside the extrusion cylinder (10) is mounted on the output end of the drive motor (12). An extrusion cap (14) of the same specification is threaded onto the left side of the extrusion cylinder (10). The left side of the extrusion cap (14) has evenly distributed extrusion holes (15). A collection box (16) with opposite positions is mounted on the top surface of the fixing frame (1).
2. The high-precision plastic granule extruder according to claim 1, characterized in that: Four sets of connecting rods (17) with opposite positions are fixedly installed between the heating jacket A (4) and the fixing frame (1).
3. The high-precision plastic granule extruder according to claim 1, characterized in that: The top surface of the fixing frame (1) is fixedly installed with four sets of fixing rods (18) in opposite positions, and the top of the fixing rods (18) is fixed with a fixing sleeve (19) located on the outer wall of the extrusion cylinder (10).
4. The high-precision plastic granule extruder according to claim 1, characterized in that: The bottom of the stirring tube (2) is funnel-shaped.
5. A high-precision plastic granule extruder according to claim 1, characterized in that: The outer wall of the discharge pipe (8) is equipped with a mechanical valve (20) of the appropriate specifications.
6. The high-precision plastic granule extruder according to claim 1, characterized in that: The controller (21) is mounted on the right side of the mounting bracket (1).