A twin-screw extruder for plastic particle production
Patent Information
- Application Number
- CN202522149623.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-10-11
AI Technical Summary
现有的双螺杆挤出机在进行工作时，其进料管处常常因装置内的高温，导致塑料粒子原料受热后呈胶着状态，进料管内的物料容易堆积，导致进料管被堵住，从而降低了塑料粒子双螺杆挤出机的生产效率，无法满足工作人员的使用需求
1、通过启动旋转电机，带动两个直齿轮一旋转，因此带动转轴一和直齿轮二旋转，从而带动齿条下降，因此带动了连接块和升降块下降，因此带动刮刀下降对内壁进行刮除，可以有效的防止进料管堵塞，保证了生产效率。
Smart Images
Figure CN224726386U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic particle production technology, and in particular to a twin-screw extruder for plastic particle production. Background Technology
[0002] Twin-screw extruders are a type of continuous material processing equipment widely used in industries such as plastics, rubber, food, and pharmaceuticals. Their core feature is that the barrel contains two screws that may mesh or not mesh with each other. The screws rotate and cooperate with the barrel to achieve the conveying, mixing, melting, plasticizing, and molding of materials. When existing twin-screw extruders are in operation, the high temperature inside the device often causes the plastic particles to stick together after being heated. This leads to material accumulation in the feed pipe, which can cause blockage and reduce the production efficiency of the twin-screw extruder, failing to meet the needs of operators. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a twin-screw extruder for the production of plastic particles.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A twin-screw extruder for producing plastic particles includes an extruder body, a feed pipe fixedly mounted on the extruder body, a lifting block slidably connected to the feed pipe, a scraper fixedly mounted on one end of the lifting block, a connecting block fixedly mounted on one end of the lifting block, a rack fixedly mounted on the connecting block, a rotary motor fixedly mounted on the feed pipe, a rotating shaft rotatably mounted on the feed pipe, a spur gear 1 fixedly mounted on both the output shaft of the rotary motor and one end of the rotating shaft 1, the two spur gears 1 meshing with each other, a spur gear 2 fixedly mounted on the rotating shaft 1, the spur gear 2 meshing with the rack, and two vibration components mounted on the feed pipe.
[0005] Preferably, the vibration assembly includes a second rotating shaft rotatably mounted on a feed pipe, a plurality of turntables fixedly mounted on the second rotating shaft, a plurality of push blocks fixedly mounted on the turntables, an extension plate fixedly mounted on the feed pipe, a sliding groove matching the turntables on the extension plate, a vibration block slidably connected in the sliding groove, a spring fixedly mounted on the vibration block and the extension plate, a push block fixedly mounted on the vibration block, and the second rotating shaft being connected to the first rotating shaft via a transmission assembly.
[0006] Preferably, the transmission assembly includes a third rotating shaft rotatably mounted on the feed pipe, with bevel gears fixedly mounted on one end of the third rotating shaft and one end of the second rotating shaft, the two bevel gears meshing with each other, and the first rotating shaft and the third rotating shaft connected by a belt transmission assembly.
[0007] Preferably, the rotary motor is made of a high-temperature resistant material.
[0008] Preferably, the slide groove has two limiting grooves, and the vibrating block is fixedly installed with a limiting block that matches the limiting groove, and the limiting block is slidably connected in the limiting groove.
[0009] Preferably, a slide rod is slidably connected to the extension plate, one end of the slide rod is fixedly installed on the vibration block, and the spring is sleeved on the outer wall of the slide rod.
[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. By starting the rotary motor, the two spur gears rotate, which in turn rotates the first shaft and the second spur gear, causing the rack to descend. This, in turn, causes the connecting block and the lifting block to descend, which in turn causes the scraper to descend and scrape the inner wall. This effectively prevents the feed pipe from getting clogged and ensures production efficiency.
[0011] 2. The transmission assembly drives the second rotating shaft to rotate, which in turn drives the turntable to rotate. The pushing block on the turntable will squeeze the pushed block, causing the pushed block to move backward, which in turn drives the vibrating block to move backward. The pushing block will continuously squeeze the pushed block. The push block and the spring drive the vibrating block to continuously vibrate the feed pipe, which accelerates the separation of the raw material from the inner wall and further improves the scraping efficiency. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of a twin-screw extruder for producing plastic particles, as proposed in this utility model.
[0013] Figure 2 This is a three-dimensional structural diagram of the spur gear at the second location of a twin-screw extruder for producing plastic particles, as proposed in this utility model.
[0014] Figure 3 This is a three-dimensional cross-sectional view of the scraper section of a twin-screw extruder for producing plastic particles, as proposed in this utility model.
[0015] In the diagram: 1 Extruder body, 2 Feed pipe, 3 Lifting block, 4 Scraper, 5 Connecting block, 6 Rack, 7 Rotary motor, 8 Shaft 1, 9 Spur gear 1, 10 Spur gear 2, 11 Shaft 2, 12 Turntable, 13 Pushing block, 14 Extension plate, 15 Vibrating block, 16 Spring, 17 Pushing block, 18 Shaft 3, 19 Bevel gear, 20 Belt drive assembly. Detailed Implementation
[0016] Reference Figures 1-3 A twin-screw extruder for producing plastic pellets, comprising: The extruder body 1 is an existing technology. During operation, the material enters the barrel through the feed pipe 2 and moves forward under the propulsion of the spiral grooves of the two screws. During the process, the external heating device of the barrel provides heat, and the shear friction between the screw and the material, and between the material and the barrel generates heat, which together gradually melts and plasticizes the solid material. The feed pipe 2 is fixedly installed on the extruder body 1. A lifting block 3 is slidably connected to the feed pipe 2. A scraper 4 is fixedly installed on one end of the lifting block 3. A connecting block 5 is fixedly installed on one end of the lifting block 3. A rack 6 is fixedly installed on the connecting block 5. A rotary motor 7 is fixedly installed on the feed pipe 2. A rotating shaft 8 is rotatably installed on the feed pipe 2. A spur gear 9 is fixedly installed on the output shaft of the rotary motor 7 and one end of the rotating shaft 8. The two spur gears 9 mesh with each other. A spur gear 10 is fixedly installed on the rotating shaft 8. The spur gear 10 meshes with the rack 6. Two vibration components are installed on the feed pipe 2. By starting the rotary motor 7, the spur gear 9 on its output shaft is driven to rotate, which in turn drives the meshing spur gear 9 to rotate, thereby driving the rotating shaft 8 to rotate, which in turn drives the spur gear 10 to rotate. At this time, the spur gear 10 drives the rack 6 to descend, and the rack 6 drives the connecting block 5 and the lifting block 3 to descend, thus driving the scraper 4 to scrape the inner wall of the feed pipe 2. The vibration assembly includes a second rotating shaft 11 rotatably mounted on the feed pipe 2, a plurality of turntables 12 fixedly mounted on the second rotating shaft 11, a plurality of push blocks 13 fixedly mounted on the turntables 12, an extension plate 14 fixedly mounted on the feed pipe 2, a sliding groove matching the turntables 12 on the extension plate 14, a vibration block 15 slidably connected in the sliding groove, a spring 16 fixedly mounted on the vibration block 15 and the extension plate 14, a push block 17 fixedly mounted on the vibration block 15, and the second rotating shaft 11 and the first rotating shaft 8 are connected by a transmission assembly; When the scraper 4 descends, the transmission assembly drives the rotating shaft 11 to rotate, which in turn drives the turntable 12 to rotate, thus causing the push block 13 to rotate continuously. The rotation of the push block 13 will squeeze the push block 17, causing the push block 17 to retract, and at the same time, it will drive the vibrating block 15 to retract. When the push block 13 leaves the push block 17, the spring 16 will reset the vibrating block 15. At this time, the vibrating block 15 will vibrate the feed pipe 2. The transmission assembly includes a rotating shaft 18 rotatably mounted on the feed pipe 2. A bevel gear 19 is fixedly mounted on one end of the rotating shaft 18 and one end of the rotating shaft 11. The two bevel gears 19 mesh with each other. The rotating shaft 18 and the rotating shaft 18 are connected by a belt transmission assembly 20. The belt transmission assembly 20 consists of two pulleys and a belt body, which is used to drive the rotation of the rotating shaft 18, so that the rotating shaft 18 rotates. When the first shaft 8 rotates, it drives the third shaft 18 to rotate through the belt drive assembly 20, which in turn causes the bevel gear 19 on the third shaft 18 to rotate, thereby driving the meshing bevel gear 19 to rotate, which in turn drives the second shaft 11 to rotate. The rotary motor 7 is made of high-temperature resistant material, which can reduce the damage of high temperature to the rotary motor 7 and extend its service life. There are two limit grooves on the slide groove. The vibration block 15 is fixedly installed with a limit block that matches the limit groove. The limit block is slidably connected in the limit groove. Through the limit block and the limit groove, the vibration block 15 can slide stably without shaking. A slide rod is slidably connected on the extension plate 14. One end of the slide rod is fixedly installed on the vibration block 15. The spring 16 is sleeved on the outer wall of the slide rod. The slide rod has a limiting function to prevent the spring 16 from deviating when it is squeezed and stretched.
[0017] In this invention, the working principle is as follows: Starting the rotary motor 7 drives the spur gear 9 on its output shaft to rotate, which in turn drives the meshing spur gear 9 to rotate, thereby driving the rotating shaft 8 to rotate. This, in turn, drives the spur gear 10 to rotate. At this time, the spur gear 10 drives the rack 6 to descend, which in turn drives the connecting block 5 and the lifting block 3 to descend, thus driving the scraper 4 to scrape the inner wall of the feed pipe 2. While the rotating shaft 8 rotates, the belt drive assembly 20 drives the rotating shaft 18 to rotate. This causes the bevel gear 19 on the rotating shaft 18 to rotate, which in turn drives the meshing bevel gear 19 to rotate, thus driving the rotating shaft 11 to rotate. The rotating shaft 11 drives the turntable 12 to rotate, which in turn drives the push block 13 to rotate continuously. The rotation of the push block 13 will squeeze the pushed block 17, causing the pushed block 17 to retract. At the same time, it will drive the vibrating block 15 to retract. When the push block 13 leaves the pushed block 17, the spring 16 will reset the vibrating block 15. At this time, the vibrating block 15 will vibrate the feed pipe 2.
Claims
1. A twin-screw extruder for producing plastic particles, comprising an extruder body (1), characterized in that, The extruder body (1) is fixedly installed with a feed pipe (2), a lifting block (3) is slidably connected to the feed pipe (2), a scraper (4) is fixedly installed on one end of the lifting block (3), a connecting block (5) is fixedly installed on one end of the lifting block (3), a rack (6) is fixedly installed on the connecting block (5), a rotary motor (7) is fixedly installed on the feed pipe (2), a rotating shaft (8) is rotatably installed on the feed pipe (2), a spur gear (9) is fixedly installed on the output shaft of the rotary motor (7) and one end of the rotating shaft (8), the two spur gears (9) mesh with each other, a spur gear (10) is fixedly installed on the rotating shaft (8), the spur gear (10) meshes with the rack (6), and two vibration components are installed on the feed pipe (2).
2. The twin-screw extruder for producing plastic particles according to claim 1, characterized in that, The vibration assembly includes a second rotating shaft (11) rotatably mounted on the feed pipe (2), a plurality of turntables (12) fixedly mounted on the second rotating shaft (11), a plurality of push blocks (13) fixedly mounted on the turntables (12), an extension plate (14) fixedly mounted on the feed pipe (2), a groove matching the turntables (12) is opened on the extension plate (14), a vibration block (15) is slidably connected in the groove, a spring (16) is fixedly mounted on the vibration block (15) and the extension plate (14), a push block (17) is fixedly mounted on the vibration block (15), and the second rotating shaft (11) is connected to the first rotating shaft (8) through a transmission assembly.
3. A twin-screw extruder for producing plastic particles according to claim 2, characterized in that, The transmission assembly includes a rotating shaft three (18) rotatably mounted on the feed pipe (2). A bevel gear (19) is fixedly mounted on one end of the rotating shaft three (18) and one end of the rotating shaft two (11). The two bevel gears (19) mesh with each other. The rotating shaft one (8) and the rotating shaft three (18) are connected by a belt transmission assembly (20).
4. A twin-screw extruder for producing plastic particles according to claim 1, characterized in that, The rotary motor (7) is made of high-temperature resistant material.
5. A twin-screw extruder for producing plastic particles according to claim 2, characterized in that, The slide groove has two limiting grooves, and the vibration block (15) is fixedly installed with a limiting block that matches the limiting groove. The limiting block is slidably connected in the limiting groove.
6. A twin-screw extruder for producing plastic particles according to claim 2, characterized in that, A sliding rod is slidably connected to the extension plate (14), one end of which is fixedly installed on the vibration block (15), and the spring (16) is sleeved on the outer wall of the sliding rod.