Single-screw plasticizing extruder
By designing a single screw plasticizing extruder feeding mechanism with motor, helical gear and rotating rod, the problem of blockage caused by sticking plastic raw materials during feeding is solved, and efficient dispersion and transportation of plastic raw materials is achieved, which improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202421943318.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-12
AI Technical Summary
When feeding, the existing single-screw plasticization extruders are prone to stick to clumps or build up due to the physical and chemical properties of the plastic raw materials, resulting in blockage of the feed channel, affecting production efficiency and increasing costs.
A feeding mechanism for a single screw plasticizing extruder is designed, including a motor, helical gear, rotating rod, rotating cylinder, twisting dragon and feeding rod. The gears and rods are driven to rotate through the motor to break up the plastic raw materials to prevent adhesion, and the broken raw materials are conveyed through the twisting dragon.
Effectively prevent plastic raw materials from sticking into clumps when feeding, avoid blockage of feed channels, improve production efficiency, and reduce production costs and time costs.
Smart Images
Figure CN223001049U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic film production and processing, and specifically relates to a single-screw plasticizing extruder. Background Art
[0002] When producing plastic films, a single-screw plasticizing extruder is required to melt and extrude plastic raw materials. However, when the existing single-screw plasticizing extruder feeds materials, due to the physical properties and chemical properties of the raw materials, such as high water content in the plastic raw materials or being affected by high temperature and other factors, it is easy for the materials to adhere to each other at the feed inlet, forming lumps or accumulations, which will block the feed channel. This not only leads to unsmooth feeding, affects production efficiency, but also may cause production interruption, increasing production costs and time costs. Content of the Utility Model
[0003] The purpose of the utility model is to provide a single-screw plasticizing extruder, which is used to solve the problems that the adhesion of plastic raw materials during feeding causes blockage, thereby affecting production efficiency and increasing production costs and time costs.
[0004] To achieve the above purpose, the utility model provides the following technical solution: a single-screw plasticizing extruder, including an extruder body and a feeding mechanism arranged at the feed inlet of the extruder body. The feeding mechanism includes a feed hopper connected to the feed inlet of the extruder body, a first support plate and a second support plate arranged on the feed hopper, a motor arranged at one end of the first support plate, a rotating rod hinged at one end of the second support plate, and a rotating cylinder sleeved on the rotating rod and rotatably connected to the rotating rod; a first bevel gear is connected to the output shaft of the motor, second bevel gears are arranged at the ends of the rotating rod and the rotating cylinder, and the two second bevel gears are arranged vertically opposite to each other. The first bevel gear meshes with the two second bevel gears respectively. A screw conveyor is arranged at the bottom of the rotating rod at the discharge port of the feed hopper, and stirring rods are arranged on both the rotating rod and the rotating cylinder.
[0005] Further, a scraping plate is arranged at the bottom end of the rotating rod and is attached to the inner wall of the feed hopper.
[0006] Further, a housing is arranged on the first support plate, and one end of the second support plate extends into the housing.
[0007] Further, the stirring rods on the rotating rod and the rotating cylinder are both inclined. The inclination angle of the stirring rod on the rotating rod is upward, and the inclination angle of the stirring rod on the rotating cylinder is downward.
[0008] Further, the feed hopper is conical.
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0010] The first helical gear is driven by a motor to rotate, thereby driving the two meshing second helical gears to rotate. Since the two second helical gears are arranged vertically opposite to each other and are respectively connected to the rotating rod and the rotating cylinder, the first helical gear will drive the two second helical gears to rotate in opposite directions, thereby driving the rotating rod and the rotating cylinder to rotate in opposite directions, and further driving the two feeding rods to rotate in opposite directions, so as to disperse the plastic raw materials entering the feeding hopper to prevent them from sticking to each other;
[0011] When the rotating rod rotates, it will drive the auger located at the discharge port of the feeding hopper to rotate, so as to convey the dispersed plastic raw materials into the single-screw plasticizing extruder to prevent the plastic raw materials from being squeezed and blocked, affecting subsequent production;
[0012] The scraping plate arranged at the bottom end of the rotating rod and fitting the inner wall of the feeding hopper can scrape off the plastic raw materials adhering to the inner wall of the feeding hopper during rotation, so as to clean and further improve the dispersion effect. Description of the Drawings
[0013] Figure 1 is the overall structure diagram of the present utility model;
[0014] Figure 2 is a partial cross-sectional view of the present utility model;
[0015] Figure 3 is the internal structure of the present utility model.
[0016] In the figure:
[0017] 1. Extruder body; 2. Feeding mechanism; 3. Feeding hopper; 4. First support plate; 5. Second support plate; 6. Motor; 7. Rotating rod; 8. Rotating cylinder; 9. First helical gear; 10. Second helical gear; 11. Auger; 12. Feeding rod; 13. Scraping plate; 14. Shell. Detailed Embodiment
[0018] Please refer to Figures 1 to 3, a single-screw plasticizing extruder, which consists of an extruder body 1 and a feeding mechanism 2 arranged at the feeding port of the extruder body 1. The feeding mechanism 2 is provided for feeding during the production of plastic films. The feeding mechanism 2 is composed of a feeding hopper 3 connected to the feeding port of the extruder body 1, a first support plate 4 and a second support plate 5 arranged on the feeding hopper 3, a motor 6 arranged at one end of the first support plate 4, a rotating rod 7 hinged at one end of the second support plate 5, and a rotating cylinder 8 sleeved on the rotating rod 7 and rotatably connected to the rotating rod 7. And among them, a first bevel gear 9 is connected to the output shaft of the motor 6, and second bevel gears 10 are arranged at the ends of the rotating rod 7 and the rotating cylinder 8. The two second bevel gears 10 are arranged vertically opposite to each other. The first bevel gear 9 meshes with the two second bevel gears 10 respectively. A screw 11 is arranged at the bottom of the rotating rod 7 at the discharge port of the feeding hopper 3. Stirring rods 12 are arranged on both the rotating rod 7 and the rotating cylinder 8. A scraping plate 13 that fits the inner wall of the feeding hopper 3 is arranged at the bottom end of the rotating rod 7. During feeding, the motor 6 drives the first bevel gear 9 to rotate, and then drives the two second bevel gears 10 meshing with it to rotate. Since the two second bevel gears 10 are arranged vertically opposite to each other and are respectively connected to the rotating rod 7 and the rotating cylinder 8, the first bevel gear 9 will drive the two second bevel gears 10 to rotate and in opposite directions, and then drive the rotating rod 7 and the rotating cylinder 8 to rotate and in opposite directions, further driving the two stirring rods 12 to rotate and in opposite directions, so as to disperse the plastic raw materials entering the feeding hopper 3 to prevent them from sticking to each other. When the rotating rod 7 rotates, it will drive the screw 11 at the discharge port of the feeding hopper 3 to rotate, so as to convey the dispersed plastic raw materials into the single-screw plasticizing extruder for plasticizing and extrusion. The scraping plate 13 arranged at the bottom end of the rotating rod 7 and fitting the inner wall of the feeding hopper 3 can scrape off the plastic raw materials adhering to the inner wall of the feeding hopper 3 when rotating.
[0019] A housing 14 is arranged on the first support plate 4, and one end of the second support plate 5 extends into the housing 14 to protect the motor 6, the first bevel gear 9 and the second bevel gear 10.
[0020] The stirring rods 12 on the rotating rod 7 and the rotating cylinder 8 are both arranged obliquely. The stirring rod 12 on the rotating rod 7 has an upward inclination angle, and the stirring rod 12 on the rotating cylinder 8 has a downward inclination angle to improve the dispersion effect of the plastic raw materials.
[0021] By setting the feeding hopper 3 to be conical, it is convenient for feeding.
[0022] Working principle of the utility model: When feeding, first start the motor 6, then put the plastic raw materials into the feeding hopper 3. The motor 6 drives the first helical gear 9 to rotate, and then drives the two second helical gears 10 meshing with it to rotate. Since the two second helical gears 10 are arranged vertically opposite and are respectively connected to the rotating rod 7 and the rotating cylinder 8, the first helical gear 9 will drive the two second helical gears 10 to rotate in opposite directions, and then drive the rotating rod 7 and the rotating cylinder 8 to rotate in opposite directions, and further drive the two material stirring rods 12 to rotate in opposite directions, so as to disperse the plastic raw materials entering the feeding hopper 3, prevent the plastic raw materials from sticking to each other, forming lumps or accumulating, and then blocking the feeding passage; when the rotating rod 7 rotates, it will drive the auger 11 located at the discharge port of the feeding hopper 3 to rotate, so as to convey the dispersed plastic raw materials into the single-screw plasticizing extruder, prevent the plastic raw materials from being blocked by extrusion and affect the subsequent production; the scraping plate 13 provided at the bottom end of the rotating rod 7 and attached to the inner wall of the feeding hopper 3 can scrape off the plastic raw materials adhering to the inner wall of the feeding hopper 3 during rotation, so as to clean and further improve the dispersion effect.
Claims
1. A single-screw plasticizing extruder, comprising an extruder body (1) and a feeding mechanism (2) arranged at a feeding port of the extruder body (1), characterized in that: The feeding mechanism (2) comprises a feeding hopper (3) connected to a feeding port of an extruder body (1), a first support plate (4) and a second support plate (5) arranged on the feeding hopper (3), a motor (6) arranged on one end of the first support plate (4), a rotating rod (7) hinged on one end of the second support plate (5), and a rotating cylinder (8) sleeved on the rotating rod (7) and rotatably connected to the rotating rod (7); a first bevel gear (9) is connected to an output shaft of the motor (6); second bevel gears (10) are arranged at the ends of the rotating rod (7) and the rotating cylinder (8); the two second bevel gears (10) are arranged vertically opposite to each other; the first bevel gear (9) is meshed with the two second bevel gears (10) respectively; a screw auger (11) is arranged at the bottom of the rotating rod (7) and located at the feeding port of the feeding hopper (3); and a material shifting rod (12) is arranged on the rotating rod (7) and the rotating cylinder (8).
2. A single screw plasticizing extruder as claimed in claim 1, characterized in that: The bottom end of the rotating rod (7) is provided with a scraper plate (13) which is in contact with the inner wall of the feed hopper (3).
3. A single screw plasticizing extruder as claimed in claim 1, characterized in that: An outer shell (14) is provided on the first support plate (4), and one end of the second support plate (5) extends into the outer shell (14).
4. A single screw plasticizing extruder as claimed in claim 1, characterized in that: The material-moving rods (12) on the rotating rod (7) and the rotating cylinder (8) are both arranged at an angle, with the material-moving rod (12) on the rotating rod (7) tilted upwards, and the material-moving rod (12) on the rotating cylinder (8) tilted downwards.
5. A single screw plasticizing extruder as claimed in claim 1, characterized in that: The feed hopper (3) is conical.