A twin-screw extruder feeding device for producing plastic granules

Abstract

This utility model discloses a feeding device for a twin-screw extruder used in the preparation of plastic granules, belonging to the field of materials processing engineering technology. It includes a base with two fixed frames fixedly connected to it. Material bins are fixedly connected to the two fixed frames, and a discharge port is fixedly connected to the lower side of the material bins. A guide cylinder is fixedly connected to the lower side of the discharge port, and a transmission rod is installed inside the guide cylinder. A connecting plate is fixedly connected to the upper side of the transmission rod. The beneficial effect of this utility model is that during material transportation, the motor drives the first transmission shaft to rotate, which in turn drives the cam to rotate. The cam abuts against the transmission rod, ultimately causing the transmission rod to move up and down. Under the action of the transmission device, the transmission rod ultimately causes the stirring blades to rotate, scattering the material in the material bins, thus affecting production output and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of materials processing engineering technology, and in particular to a twin-screw extruder feeding device for preparing plastic granules. Background Technology

[0002] In the context of modern industry and intelligent manufacturing, the feeding device of twin-screw extruder is developing rapidly towards high precision, automation and integration. The feeding device, also known as the feeder or feeding system, is the "throat" of the twin-screw extrusion production line. Its stability, accuracy and uniformity directly determine the quality of the final product and production efficiency. Currently, the feeding devices of traditional twin-screw extruders have encountered problems in actual production and daily life. Powder or easily adhering materials tend to form arches in the hopper, which cannot fall naturally under gravity, affecting feeding efficiency and thus affecting overall production efficiency and output. Furthermore, metal impurities (such as iron filings) or large foreign objects in the raw materials in the hopper can mix into the feeding screw, causing the screw to jam or the particles to be scrapped. Due to the lack of a mechanical filtration structure, the overall production output, quality and efficiency are affected. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a twin-screw extruder feeding device for preparing plastic granules.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A twin-screw extruder feeding device for preparing plastic granules includes a base with two fixed frames fixedly connected to it. A material hopper is fixedly connected between the two fixed frames. A discharge port is fixedly connected to the lower side of the material hopper, and a guide cylinder is fixedly connected to the lower side of the discharge port. A transmission rod is installed inside the guide cylinder, and a connecting plate is fixedly connected to the upper side of the transmission rod. A fixed block is fixedly connected to one end of the connecting plate, and a rack is fixedly connected to the upper side of the fixed block. A first transmission shaft is rotatably connected to the side wall of the material hopper. A gear and a first helical gear are fixedly connected to the outer side of the first transmission shaft. A second transmission shaft is rotatably connected to the upper side of the material hopper, and a second helical gear is fixedly connected to the outer side of the second transmission shaft. Multiple stirring blades are fixedly connected to the outer side of the second transmission shaft. The rack and gear are meshed together, and the first and second helical gears are meshed together.

[0005] Preferably, two rotating plates are rotatably connected to both sides of the transmission rod, and each of the two rotating plates is rotatably connected to a connecting block. An arc-shaped plate is fixedly connected to the connecting block, and a screening disc is slidably connected to the outside of the transmission rod.

[0006] Preferably, a conveying cylinder is fixedly and through-connected to the lower side of the guide cylinder, a first rotating shaft is rotatably and through-connected inside the conveying cylinder, a rotating blade is fixedly connected to the outer side of the first rotating shaft, and a cam is fixedly connected to the outer side of the first rotating shaft. The cam and the transmission rod are abutting each other in the initial position.

[0007] Preferably, a motor is fixedly connected to one end of the first rotating shaft, and a transfer bin is fixedly connected to one end of the conveying cylinder.

[0008] Preferably, a cleaning brush is fixedly installed on the lower side of the arc-shaped plate and slides relative to the screening disc.

[0009] Preferably, a plurality of support plates are fixedly connected to the lower side of the conveying cylinder.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. First, when materials need to be transported, the motor is started. The motor drives the first transmission shaft to rotate, which in turn drives the cam to rotate. The cam abuts against the transmission rod, which in turn drives the transmission rod to move up and down, ultimately causing the mixing blades to rotate. This disperses the material in the material bin, preventing it from forming an arch and falling naturally, thus affecting production output and efficiency.

[0011] 2. At the same time, the up-and-down movement of the transmission rod will also drive the two rotating plates to move. Compared with the left-and-right movement of the transmission rod, the movement of the rotating plates will drive the fixed block and the arc plate to move synchronously. From the overall perspective, the movement of the rotating plates will drive the arc plate to slide left and right on the screening plate. The brush on the lower side of the arc plate will push the material to contact the screening plate. The brush will clean the screen holes of the screening plate, thereby improving the screening efficiency and thus improving the production efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a twin-screw extruder feeding device for preparing plastic granules, as proposed in this utility model.

[0013] Figure 2 This is a schematic diagram showing the connection between the feed cylinder and the conveying cylinder in a twin-screw extruder feeding device for preparing plastic granules, as proposed in this utility model.

[0014] Figure 3 This is a schematic diagram of the internal structure of the conveyor cylinder in a twin-screw extruder feeding device for preparing plastic granules, as proposed in this utility model.

[0015] Figure 4 This is a schematic diagram of the internal structure of the material bin in a twin-screw extruder feeding device for preparing plastic granules, as proposed in this utility model.

[0016] Figure 5This is a schematic diagram showing the connection between the arc-shaped plate and the rotating plate in a twin-screw extruder feeding device for preparing plastic granules, as proposed in this utility model.

[0017] In the diagram: 1. Base, 2. Motor, 3. Fixing frame, 4. Material bin, 5. Conveying cylinder, 6. Transfer bin, 7. Discharge port, 8. Guide cylinder, 9. Support plate, 10. First rotating shaft, 11. Rotating blade, 12. Cam, 13. Spiral blade, 14. Transmission rod, 15. Screening disc, 16. Connecting plate, 17. Fixing block, 18. Rack, 19. First transmission shaft, 20. Gear, 21. First helical gear, 22. Second helical gear, 23. Second transmission shaft, 24. Stirring blade, 25. Rotating plate, 26. Connecting block, 27. Arc plate. Detailed Implementation

[0018] Reference Figures 1-5 A twin-screw extruder feeding device for preparing plastic granules includes a base 1, two fixed frames 3 fixedly connected to the base 1, a material bin 4 fixedly connected between the two fixed frames 3, a discharge port 7 fixedly connected to the lower side of the material bin 4, a guide cylinder 8 fixedly connected to the lower side of the discharge port 7, a transmission rod 14 installed inside the guide cylinder 8, a connecting plate 16 fixedly connected to the upper side of the transmission rod 14, a fixed block 17 fixedly connected to one end of the connecting plate 16, a rack 18 fixedly connected to the upper side of the fixed block 17, a first transmission shaft 19 rotatably connected to the side wall of the material bin 4, a gear 20 and a first helical gear 21 fixedly connected to the outer side of the first transmission shaft 19, a second transmission shaft 23 rotatably connected to the upper side of the material bin 4, a second helical gear 22 fixedly connected to the outer side of the second transmission shaft 23, and multiple stirring blades 24 fixedly connected to the outer side of the second transmission shaft 23. The rack 18 and the gear 20 are meshed, and the first helical gear 21 and the second helical gear 22 are meshed. First, as the transmission rod 14 moves up and down, it drives the connecting plate 16 to move synchronously. The connecting plate 16 drives the fixed block 17 to move. The movement of the fixed block 17 drives the rack 18 to move synchronously with the transmission rod 14. The rack 18 drives the gear 20 meshing with it to rotate. Under the action of the first transmission shaft 19, the gear 20 drives the first helical gear 21 to rotate. The first helical gear 21 then drives the second helical gear 22 meshing with it to rotate. Under the action of the second transmission shaft 23, the stirring blade 24 rotates. The rotation of the stirring blade 24 will break the static friction balance between the materials, avoid the formation of an arch bridge. If an arch bridge has already formed, it will also break the arch bridge, allowing the materials to fall normally, avoiding the phenomenon of the threaded rod spinning idly or lacking material, and improving output and production efficiency.

[0019] Two rotating plates 25 are rotatably connected to both sides of the transmission rod 14. Each rotating plate 25 is rotatably connected to a connecting block 26. An arc-shaped plate 27 is fixedly connected to the connecting block 26. A screening disc 15 is slidably connected to the outside of the transmission rod 14. A cleaning brush is fixedly installed on the lower side of the arc-shaped plate 27 and slides relative to the screening disc 15. The up-and-down movement of the transmission rod 14 will drive the two rotating plates 25 to move. The left-and-right movement of the rotating plates 25 relative to the transmission rod 14 will drive the connecting block 26 and the arc-shaped plate 27 to move synchronously. From the overall perspective, the movement of the rotating plates 25 causes the arc-shaped plate 27 to slide left and right on the screening disc 15. The brush on the lower side of the arc-shaped plate 27 will push the material to contact the screening disc 15. The brush will clean the screen holes of the screening disc, thereby improving screening efficiency and thus improving production efficiency.

[0020] A conveying cylinder 5 is fixedly connected to the lower side of the guide cylinder 8. A first rotating shaft 10 is rotatably connected inside the conveying cylinder 5. A rotating blade 11 is fixedly connected to the outer side of the first rotating shaft 10. A cam 12 is fixedly connected to the outer side of the first rotating shaft 10. The cam 12 and the transmission rod 14 are abutting each other in the initial position. A motor 2 is fixedly connected to the outer side of the conveying cylinder 5. The first rotating shaft 10 and the output end of the motor 2 are fixedly connected. A transfer chamber 6 is fixedly connected to one end of the conveying cylinder 5. Multiple liftable support plates 9 are fixedly connected to the lower side of the conveying cylinder 5. When a material transportation task is required, motor 2 is started first. Motor 2 drives the first rotating shaft 10 to rotate. The first rotating shaft 10 drives the cam 12 to rotate. The rotation of the cam 12 causes the transmission rod 14, which is opposed to it, to move up and down relative to the first rotating shaft 10, providing power for subsequent mechanical movement. At the same time, the first rotating shaft 10 drives the rotating blade 11 and the spiral blade 13 to rotate, generating power for transporting logistics. The material falling from the material bin 4 and passing through the discharge port 7 and the guide cylinder 8 is transported to the transfer bin 6.

[0021] In this utility model, the motor 2 is started, which drives the first rotating shaft 10 to rotate. The first rotating shaft 10 drives the cam 12 to rotate. The cam 12 drives the transmission rod 14 to move up and down. During the up and down movement of the transmission rod 14, the connecting plate 16 moves synchronously. The connecting plate 16 drives the fixed block 17 to move, which in turn drives the rack 18 and the transmission rod 14 to move. The rack 18 drives the gear 20 to rotate. The rotation of the gear 20 drives the first helical gear 21 to rotate. The first helical gear 21 drives the second helical gear 22 to rotate. Under the action of the second transmission shaft 23, the stirring blade 24 rotates. At the same time, the up-and-down movement of the transmission rod 14 will drive the two rotating plates 25 to move. Relative to the left-and-right movement of the transmission rod 14, the movement of the rotating plates 25 will drive the connecting block 26 and the arc plate 27 to move synchronously. From the overall perspective, the movement of the rotating plates 25 will cause the arc plate 27 to slide left and right on the screening disc 15. The brush on the lower side of the arc plate 27 will push the material to contact the screening disc 15, and the brush will clean the screen holes of the screening disc, thereby improving the screening efficiency and thus improving the production efficiency.

Claims

1. A twin-screw extruder feeding device for preparing plastic granules, comprising a base (1), characterized in that, Two fixed frames (3) are fixedly connected to the base (1), and a material bin (4) is fixedly connected between the two fixed frames (3). A discharge port (7) is fixedly connected to the lower side of the material bin (4), and a guide cylinder (8) is fixedly connected to the lower side of the discharge port (7). A transmission rod (14) is installed inside the guide cylinder (8), and a connecting plate (16) is fixedly connected to the upper side of the transmission rod (14). A fixing block (17) is fixedly connected to one end of the connecting plate (16), and a rack (18) is fixedly connected to the upper side of the fixing block (17). The side wall of the silo (4) is rotatably connected to a first drive shaft (19), and a gear (20) and a first helical gear (21) are fixedly connected to the outside of the first drive shaft (19). The upper side of the silo (4) is rotatably connected to a second drive shaft (23), and a second helical gear (22) is fixedly connected to the outside of the second drive shaft (23). Multiple stirring blades (24) are fixedly connected to the outside of the second drive shaft (23). The rack (18) and the gear (20) are meshed together, and the first helical gear (21) and the second helical gear (22) are meshed together.

2. The twin-screw extruder feeding device for preparing plastic granules according to claim 1, characterized in that, The transmission rod (14) is rotatably connected to two rotating plates (25) on both sides. Each of the two rotating plates (25) is rotatably connected to a connecting block (26). The connecting block (26) is fixedly connected to an arc plate (27). A screening disc (15) is slidably connected to the outside of the transmission rod (14).

3. The twin-screw extruder feeding device for preparing plastic granules according to claim 1, characterized in that, The lower side of the guide cylinder (8) is fixedly connected to the conveying cylinder (5), and the inside of the conveying cylinder (5) is rotatably connected to the first rotating shaft (10). The outside of the first rotating shaft (10) is fixedly connected to the rotating blade (11), and the outside of the first rotating shaft (10) is fixedly connected to the cam (12).

4. The twin-screw extruder feeding device for preparing plastic granules according to claim 3, characterized in that, A motor (2) is fixedly connected to the outside of the conveying cylinder (5), the first rotating shaft (10) is fixedly connected to the output end of the motor (2), and a transfer chamber (6) is fixedly connected to one end of the conveying cylinder (5).

5. A twin-screw extruder feeding device for preparing plastic granules according to claim 2, characterized in that, A cleaning brush is fixedly installed on the lower side of the arc plate (27).

6. The twin-screw extruder feeding device for preparing plastic granules according to claim 3, characterized in that, Multiple support plates (9) are fixedly connected to the lower side of the conveying cylinder (5).

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