Mixing type single-screw plastic extruder

Abstract

The utility model belongs to the field of plastic extrusion processing, and particularly relates to a mixing type single-screw plastic extruder which comprises a bottom plate, side plates are arranged on the two sides of the top of one end of the bottom plate, a motor A is arranged on the top of one side plate, a rotating wheel is fixed to the output end of the motor A, a rocker arm is movably connected to one side of the top of the rotating wheel, a connecting rod is movably connected to the bottom of one end of the rocker arm, and a connecting frame is fixed to the bottom of the connecting rod; guide grooves are formed in the surface of the receiving plate at equal intervals, sliding square rings are arranged at four corners of the top surface of the receiving plate, and a treatment tank is arranged at the top of the other end of the bottom plate; a fixed cylinder is arranged on one side of the inner wall of the treatment tank; the motor A drives the rotating wheel to rotate, drives the rocker arm to swing and pulls the material receiving plate to horizontally reciprocate along the limiting rod through the connecting rod, raw materials are evenly dispersed in the material guiding groove in the surface of the material receiving plate during shaking, the phenomenon that the raw materials are stacked and blocked when the feeding hopper conducts discharging is avoided, the problem that traditional discharging is not smooth is solved, and the raw material conveying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic extrusion processing, specifically a compounding type single-screw plastic extruder. Background Technology

[0002] A single-screw plastic extruder is a machine for extruding and molding plastics. By changing various types of die heads (dies, mandrels) and using them with corresponding auxiliary machines, it can produce tubes, rods, strips, blown films, wires, blown bottles, and wrapping wires, cables, and insulation layers from raw materials such as soft and hard polyvinyl chloride, polyethylene, and polypropylene.

[0003] In the prior art, such as in CN220331917U, a compounding type single screw plastic extruder is disclosed, which includes a machine body, a feeding hopper, and a fixed frame. The feeding hopper is installed on the machine body, the fixed frame is installed on the machine body, a first servo motor is fixedly installed on the front of the fixed frame, a rotating shaft is fixedly installed on the output shaft of the first servo motor, eccentric wheels are fixedly installed on both the front and rear sides of the outer surface of the rotating shaft, and a support column is fixedly installed on the right surface of the feeding hopper.

[0004] While the aforementioned patent can drive the stirring rod to rotate by activating the second servo motor, thereby fully mixing various raw materials, and can drive the feeding screw to rotate by activating the third servo motor, thereby guiding the raw materials in the mixing box into the inner cavity of the feeding hopper, which can improve feeding efficiency and reduce the workload of workers, during the mixing process, due to the certain viscosity of the plastic raw materials, some raw materials adhere to the inner wall of the device, resulting in material waste and preventing some raw materials from participating in the mixing process, while also causing inconvenience for subsequent cleaning. Furthermore, when feeding raw materials, they tend to accumulate together, leading to discharge blockage. Therefore, to address the above problems, a mixing-type single-screw plastic extruder is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, during the mixing process, the plastic raw materials have a certain viscosity, causing some of the materials to adhere to the inner wall of the device, resulting in material waste and preventing some of the materials from participating in the mixing process. This also makes subsequent cleaning inconvenient. Furthermore, when the raw materials are fed in, they tend to accumulate together, causing material blockage. This invention proposes a mixing-type single-screw plastic extruder.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A mixing-type single-screw plastic extruder of this utility model includes a base plate; side plates are provided on both sides of the top of one end of the base plate, with motor A installed on the top of one side plate. A rotor is fixed at the output end of motor A, and a rocker arm is movably connected to the top of the rotor. A connecting rod is movably connected to the bottom of one end of the rocker arm, and a connecting frame is fixed at the bottom of the connecting rod. An inclined receiving plate is provided at the bottom of the connecting frame, and guide grooves are equidistantly formed on the surface of the receiving plate. Sliding square rings are provided at the four corners of the top surface of the receiving plate. A processing tank is provided on the top of the other end of the base plate; a fixed cylinder is provided on one side of the inner wall of the processing tank, and motor B is installed on the top of the fixed cylinder. A reciprocating lead screw is fixed at the output end of motor B. The reciprocating screw has a drive block that fits the inner wall of the fixed cylinder. A slider is fixed to the surface of the drive block, and a drive ring is fixed to the surface of the slider. An elastic rubber ring is sleeved on the outer wall of the drive ring. A stirring rod is installed inside the processing tank. A discharge pipe is connected through one side of the bottom of the processing tank. One end of the discharge pipe is connected to a single-screw plastic processing tank. An extrusion head is installed at one end of the single-screw plastic processing tank. A limiting rod is installed on one side of the side plate. A sliding square ring is slidably connected to the surface of the limiting rod. A feeding hopper is installed at the top of the side plate. The bottom of the feeding hopper is located directly above the receiving plate. An inclined plate is installed at the lower end of the side of the side plate. A guide rail groove is opened on the surface of the inclined plate. One end of the guide rail groove is located directly above the processing tank, and the other end is located below the receiving plate.

[0007] Preferably, the elastic rubber ring fixed to the outer wall of the drive ring is tightly fitted to the inner wall of the treatment tank, and a sliding groove is opened on the side of the fixed cylinder and the slider is slidably connected inside the sliding groove.

[0008] Preferably, the outlet of the feeding hopper is vertically aligned with the guide groove of the receiving plate, and the inclination angle of the guide groove is consistent with the inclination direction of the receiving plate.

[0009] Preferably, the inner diameter of the sliding square ring is clearance-fitted with the outer diameter of the limiting rod, and the extension direction of the limiting rod is parallel to the reciprocating movement trajectory of the receiving plate.

[0010] Preferably, the diameter of the circular groove inside the drive ring is larger than the rotation diameter of the stirring rod, and the contact surface between the outer wall of the elastic rubber ring and the inner wall of the treatment tank is an arc-shaped structure.

[0011] Preferably, the guide rail groove surface of the inclined plate is a smooth arc transition surface, and the end of the guide rail groove is aligned with the central axis of the feed inlet of the processing tank.

[0012] The advantages of this utility model are:

[0013] 1. This utility model uses an A motor to drive the rotating wheel to rotate, which in turn drives the rocker arm to swing and pulls the receiving plate to move horizontally back and forth along the limiting rod via the connecting rod. The guide groove on the surface of the receiving plate evenly disperses the raw material during the shaking, avoiding the accumulation and blockage of raw material when the feeding hopper is discharging. This solves the problem of poor material discharge in traditional methods and improves the efficiency of raw material conveying.

[0014] 2. This utility model uses a B motor to drive a reciprocating screw inside the processing tank, which in turn drives the drive block to rise and fall. This causes the slider to move along the groove of the fixed cylinder and drives the drive ring to slide up and down. The elastic rubber ring is in close contact with the inner wall of the processing tank, scraping off the adhered raw materials. The design of the inner circular groove of the drive ring having a diameter larger than the rotation diameter of the stirring rod avoids interference between the stirring rod and the drive ring, ensuring that stirring and scraping are carried out simultaneously. This solves the problem of waste caused by raw materials adhering to the inner wall during the mixing process and improves the uniformity of mixing and cleaning efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the single-screw plastic processing tank of this utility model;

[0018] Figure 3 This is a schematic diagram of the reciprocating lead screw and motor B of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of motor A and receiving plate of this utility model.

[0020] In the diagram: 1. Base plate; 2. Side plate; 3. Motor A; 4. Rotary wheel; 5. Rocker arm; 6. Connecting rod; 7. Connecting frame; 8. Receiving plate; 9. Guide chute; 10. Sliding square ring; 11. Processing tank; 12. Fixed cylinder; 13. Motor B; 14. Reciprocating screw; 15. Drive block; 16. Slider; 17. Drive ring; 18. Elastic rubber ring; 19. Stirring rod; 20. Discharge pipe; 21. Single screw plastic processing tank; 22. Extrusion head; 23. Limiting rod; 24. Feed hopper; 25. Inclined plate; 26. Guide rail groove. Detailed Implementation

[0021] 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 scope of protection of the present utility model.

[0022] Please see Figures 1-4 As shown, a compounding type single-screw plastic extruder includes a base plate 1; side plates 2 are provided on both sides of the top of one end of the base plate 1, one of which is equipped with an A motor 3, the output end of which is fixed with a rotor 4, a rocker arm 5 is movably connected to the top of the rotor 4, a connecting rod 6 is movably connected to the bottom of one end of the rocker arm 5, a connecting frame 7 is fixed to the bottom of the connecting rod 6, an inclined receiving plate 8 is provided at the bottom of the connecting frame 7, the surface of the receiving plate 8 is provided with guide grooves 9 at equal intervals, and sliding square rings 10 are provided at the four corners of the top surface of the receiving plate 8; a processing tank 11 is provided on the top of the other end of the base plate 1; a fixed cylinder 12 is provided on one side of the inner wall of the processing tank 11, a B motor 13 is provided on the top of the fixed cylinder 12, a reciprocating screw 14 is fixed to the output end of the B motor 13, and a drive mechanism adapted to the inner wall of the fixed cylinder 12 is provided on the surface of the reciprocating screw 14. Moving block 15, driving block 15 has a fixed slider 16 on its surface, a driving ring 17 on the surface of slider 16, and an elastic rubber ring 18 sleeved on the outer wall of driving ring 17. A stirring rod 19 is set inside the processing tank 11. A discharge pipe 20 is connected through one side of the bottom of the processing tank 11. One end of the discharge pipe 20 is connected to a single screw plastic processing tank 21. An extrusion head 22 is set at one end of the single screw plastic processing tank 21. A limiting rod 23 is set on one side of the side plate 2. A sliding square ring 10 is slidably connected to the surface of the limiting rod 23. A feeding hopper 24 is set at the top of the side plate 2. The bottom of the feeding hopper 24 is located directly above the receiving plate 8. An inclined plate 25 is set at the lower side of the side plate 2. A guide rail groove 26 is opened on the surface of the inclined plate 25. One end of the guide rail groove 26 is located directly above the processing tank 11 and the other end is located below the receiving plate 8.

[0023] During operation, side plates 2 are installed on both sides of one end of the base plate 1. The A motor 3 on the top of one side plate 2 drives the rotating wheel 4 to rotate. The rotating wheel 4 drives the rocker arm 5 to swing. The rocker arm 5 pulls the connecting frame 7 through the connecting rod 6, so that the inclined receiving plate 8 moves horizontally back and forth along the limiting rod 23. The guide groove 9 on the surface of the receiving plate 8 evenly disperses the raw material into the guide rail groove 26 of the inclined plate 25 and slides into the processing tank 11. The B motor 13 inside the processing tank 11 drives the reciprocating screw 14 to rotate, which drives the drive block 15 to rise and fall along the slide groove of the fixed cylinder 12. The elastic rubber ring 18 on the outer wall of the drive ring 17 scrapes off the raw material adhering to the inner wall of the processing tank 11. The mixed material is conveyed to the single screw plastic processing tank 21 for extrusion molding through the discharge pipe 20. The reciprocating movement of the receiving plate 8 achieves uniform feeding through the guide groove 9, avoiding raw material accumulation and blockage. The elastic rubber ring 18 is in close contact with the inner wall of the processing tank 11, effectively scraping off the adhering raw material, reducing waste and improving cleaning efficiency.

[0024] Furthermore, the elastic rubber ring 18 fixed to the outer wall of the drive ring 17 is tightly fitted to the inner wall of the processing tank 11, and the side of the fixed cylinder 12 has a groove and the slider 16 is slidably connected inside the groove.

[0025] During operation, the elastic rubber ring 18 on the outer wall of the drive ring 17 forms a flexible scraping contact with the inner wall of the processing tank 11. The sliding groove on the side of the fixed cylinder 12 restricts the slider 16 to move only in the vertical direction, ensuring that the drive ring 17 rises and falls stably. The flexible design of the elastic rubber ring 18 avoids scratching the tank wall, and the sliding groove structure ensures that the vertical movement trajectory of the drive ring 17 is stable.

[0026] Furthermore, the outlet of the feeding hopper 24 is vertically aligned with the guide groove 9 of the receiving plate 8, and the inclination angle of the guide groove 26 is consistent with the inclination direction of the receiving plate 8.

[0027] During operation, the outlet of the feeding hopper 24 is vertically aligned with the guide groove 9 of the receiving plate 8. The inclination angle of the guide groove 26 is consistent with the inclination direction of the receiving plate 8. After being dispersed by the guide groove 9, the raw material slides into the processing tank 11 along the guide groove 26. The alignment design of the feeding hopper 24 and the guide groove 9 ensures accurate feeding of the raw material. The inclination angle of the guide groove 26 optimizes the sliding path of the raw material and reduces the risk of blockage.

[0028] Furthermore, the inner diameter of the sliding square ring 10 is clearance-fitted with the outer diameter of the limiting rod 23, and the extension direction of the limiting rod 23 is parallel to the reciprocating movement trajectory of the receiving plate 8.

[0029] During operation, the inner diameter of the sliding square ring 10 is clearance-fitted with the outer diameter of the limiting rod 23. The extension direction of the limiting rod 23 is parallel to the reciprocating movement trajectory of the receiving plate 8, restricting the receiving plate 8 to move only horizontally. The clearance fit between the sliding square ring 10 and the limiting rod 23 ensures that the receiving plate 8 moves smoothly, and the parallel direction design of the limiting rod 23 ensures the accuracy of the horizontal movement trajectory.

[0030] Furthermore, the diameter of the circular groove inside the drive ring 17 is larger than the rotation diameter of the stirring rod 19, and the contact surface between the outer wall of the elastic rubber ring 18 and the inner wall of the processing tank 11 is an arc-shaped structure.

[0031] During operation, the diameter of the circular groove inside the drive ring 17 is larger than the rotation diameter of the stirring rod 19, thus avoiding interference between the drive ring 17 and the stirring rod 19. The arc-shaped structure of the outer wall of the elastic rubber ring 18 fits tightly against the inner wall of the treatment tank 11. The circular groove of the drive ring 17 avoids the rotation of the stirring rod 19, and the arc-shaped contact surface of the elastic rubber ring 18 enhances the scraping effect and sealing.

[0032] Furthermore, the surface of the guide rail groove 26 of the inclined plate 25 is a smooth arc transition surface, and the end of the guide rail groove 26 is aligned with the central axis of the feed inlet of the processing tank 11.

[0033] During operation, the surface of the guide rail groove 26 of the inclined plate 25 is a smooth arc transition surface. The end of the guide rail groove 26 is aligned with the central axis of the feed inlet of the processing tank 11. The raw material slides into the processing tank 11 along the smooth surface. The smooth arc surface of the guide rail groove 26 reduces the frictional resistance of the raw material, and the alignment of the end with the feed inlet of the processing tank 11 ensures accurate input of the raw material.

[0034] Working principle: Motor A 3 drives the rotating wheel 4 to rotate, which in turn drives the rocker arm 5 to swing. This causes the connecting rod 6 to pull the receiving plate 8 to move horizontally back and forth along the limiting rod 23. The guide groove 9 of the receiving plate 8 evenly disperses the raw material falling from the feeding hopper 24 into the guide rail groove 26 of the inclined plate 25 and slides into the processing tank 11. When the stirring rod 19 in the processing tank 11 mixes the material, Motor B 13 drives the reciprocating screw 14 to drive the drive block 15 to rise and fall along the slide groove of the fixed cylinder 12, which scrapes off the elastic rubber ring 18 on the outer wall of the drive ring 17. The raw materials adhering to the inner wall of the processing tank 11 are mixed and transported through the discharge pipe 20 to the single-screw plastic processing tank 21, where they are extruded by the extrusion head 22. The smooth arc transition surface of the guide rail groove 26 and the alignment design of its end with the feed port of the processing tank 11 ensure smooth input of raw materials. The clearance fit between the sliding square ring 10 and the limiting rod 23 ensures the stability of the moving trajectory of the receiving plate 8. The circular groove of the drive ring 17 avoids the rotation path of the stirring rod 19. The arc contact surface of the elastic rubber ring 18 enhances the sealing performance of the scraping material.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A compounding type single-screw plastic extruder, characterized in that: Includes a base plate (1); side plates (2) are provided on both sides of the top of one end of the base plate (1), an A motor (3) is provided on the top of one side plate (2), a rotating wheel (4) is fixed at the output end of the A motor (3), a rocker arm (5) is movably connected to the top side of the rotating wheel (4), a connecting rod (6) is movably connected to the bottom of one end of the rocker arm (5), a connecting frame (7) is fixed to the bottom of the connecting rod (6), an inclined receiving plate (8) is provided at the bottom of the connecting frame (7), a guide groove (9) is opened at equal intervals on the surface of the receiving plate (8), a sliding square ring (10) is provided at the four corners of the top surface of the receiving plate (8), and a processing tank (11) is provided on the top of the other end of the base plate (1); A fixed cylinder (12) is provided on one side of the inner wall of the processing tank (11). A B motor (13) is provided on the top of the fixed cylinder (12). A reciprocating lead screw (14) is fixed at the output end of the B motor (13). A drive block (15) adapted to the inner wall of the fixed cylinder (12) is provided on the surface of the reciprocating lead screw (14). A slider (16) is fixed on the surface of the drive block (15). A drive ring (17) is fixed on the surface of the slider (16). An elastic rubber ring (18) is sleeved on the outer wall of the drive ring (17). A stirring rod (19) is provided inside the processing tank (11). A discharge pipe (20) is connected through one side of the bottom of the processing tank (11). One end of the feed pipe (20) is connected to a single-screw plastic processing tank (21). One end of the single-screw plastic processing tank (21) is provided with an extrusion head (22). A limiting rod (23) is provided on one side of the side plate (2). The sliding square ring (10) is slidably connected to the surface of the limiting rod (23). A feeding hopper (24) is provided at the top of the side plate (2). The bottom of the feeding hopper (24) is located directly above the receiving plate (8). An inclined plate (25) is provided at the lower end of the side of the side plate (2). A guide rail groove (26) is opened on the surface of the inclined plate (25). One end of the guide rail groove (26) is located directly above the processing tank (11) and the other end is located below the receiving plate (8).

2. The compounding type single-screw plastic extruder according to claim 1, characterized in that: The elastic rubber ring (18) fixed to the outer wall of the drive ring (17) is tightly fitted to the inner wall of the treatment tank (11), and the side of the fixed cylinder (12) has a groove and the slider (16) is slidably connected inside the groove.

3. The compounding type single-screw plastic extruder according to claim 1, characterized in that: The outlet of the feeding hopper (24) is vertically aligned with the guide groove (9) of the receiving plate (8), and the inclination angle of the guide groove (26) is consistent with the inclination direction of the receiving plate (8).

4. A compounding type single-screw plastic extruder according to claim 1, characterized in that: The inner diameter of the sliding square ring (10) is clearance-fitted with the outer diameter of the limiting rod (23), and the extension direction of the limiting rod (23) is parallel to the reciprocating movement trajectory of the receiving plate (8).

5. A compounding type single-screw plastic extruder according to claim 1, characterized in that: The diameter of the circular groove inside the drive ring (17) is larger than the rotation diameter of the stirring rod (19), and the outer wall of the elastic rubber ring (18) and the inner wall of the treatment tank (11) have an arc-shaped contact surface.

6. A compounding type single-screw plastic extruder according to claim 1, characterized in that: The guide groove (26) of the inclined plate (25) has a smooth arc transition surface, and the end of the guide groove (26) is aligned with the central axis of the feed inlet of the processing tank (11).

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