A multi-layer composite plastic extruder

Abstract

This utility model relates to the field of plastic processing equipment and discloses a multi-layer composite plastic extruder, including a device housing. A transmission assembly is installed inside the housing, and a locking assembly is installed on the outer wall. In this utility model, a starting motor output drives gear two to rotate, gear two drives gear one, gear one drives shaft one, which is the core actuator for plasticizing and conveying. Shaft one drives a sprocket, which in turn drives a chain. The chain enables multiple gears to rotate synchronously, which in turn drives shaft three to rotate. Shaft three then drives a rotary valve, and the rotary valve precisely dispenses a stable amount of plastic entering the extruder. This solves the significant shortcomings of existing multi-layer composite plastic extruders in handling plastic raw materials of different viscosities. Furthermore, the existing extruder design is not conducive to thorough cleaning, and residual raw materials may affect the quality of subsequent batches of products.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing equipment, and in particular to a multi-layer composite plastic extruder. Background Technology

[0002] In the plastics manufacturing industry, as market demands for plastic product performance continue to rise, single-material plastic products can no longer meet diverse application needs. Multi-layer composite plastic extruders have emerged to address this need, capable of combining multiple plastic raw materials with different properties to produce plastic products with excellent overall performance. These are used for packaging food and pharmaceuticals; in the building materials sector, they can manufacture multi-layer composite plastic pipes and sheets that combine high strength, corrosion resistance, and thermal insulation. The advent of multi-layer composite plastic extruders has greatly promoted technological progress and product innovation in the plastics industry, becoming a key piece of equipment for improving the quality and performance of plastic products.

[0003] Existing multi-layer composite plastic extruders typically consist of multiple independent single-screw extrusion units. Their working principle is as follows: plastic raw material enters the barrel from the hopper and moves forward along the barrel under the rotation of the screw. During this process, a heating device outside the barrel heats the raw material, causing it to gradually melt and plasticize. The molten plastic from different single-screw extrusion units converges into a composite die through their respective independent melt delivery channels. Inside the composite die, a complex flow channel structure is designed. These channels guide the different melts to flow along specific paths and initially combine them, ultimately extruding from the die to form a multi-layer composite plastic product.

[0004] However, existing multi-layer composite plastic extruders have significant shortcomings when dealing with plastic raw materials of different viscosities. During the composite extrusion process, different plastic raw materials may remain on the surface of components such as the flow channel and screw. The structural design of existing extruders is not conducive to thorough cleaning, and residual raw materials may affect the quality of the next batch of products. This problem is even more serious when producing composite products with high purity requirements. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-layer composite plastic extruder, which aims to improve the existing extruder's inability to accurately match the extrusion speed of each layer of melt when facing plastic raw materials with large viscosity differences. This results in uneven thickness distribution of each layer of the product. During the composite extrusion process, different plastic raw materials may remain on the surface of components such as the flow channel and screw. The structural design of the existing extruder is not conducive to thorough cleaning, and the residual raw materials may affect the quality of the next batch of products.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer composite plastic extruder, comprising a device housing, a device base disposed below the device housing, a transmission assembly disposed inside the device housing, and a locking assembly disposed on the outer wall of the device housing. The transmission assembly includes a first rotating shaft, the device housing disposed on the outer wall of the first rotating shaft, a partition fixedly connected to the outer wall of the first rotating shaft, a sprocket disposed on one side of the outer wall of the partition, a chain disposed above the device base, the chain meshing with the sprocket, a first gear fixedly connected to the outer wall of the first rotating shaft, a motor disposed above the device base, a second gear fixedly connected to the output end of the motor, the second gear meshing with the first gear, a third rotating shaft fixedly connected to the inner wall of the sprocket, a rotary valve fixedly connected to the outer wall of the third rotating shaft, a transition cavity rotatably connected to the outer wall of the third rotating shaft, and a feed hopper fixedly connected to the top of the transition cavity.

[0007] Furthermore, the engaging assembly includes an arc-shaped module, the outer wall of which is fixedly connected to a device housing, a rotating shaft six is ​​rotatably connected to the arc-shaped module, a buckle is fixedly connected to the top of the arc-shaped module, a rotating shaft five is rotatably connected to the inner wall of the buckle, an elongated handle is fixedly connected to the outer wall of the rotating shaft five, a support arm two is provided at the bottom of the arc-shaped module, a rotating shaft two is rotatably connected to the inner wall of the support arm two, a rotating bracket is fixedly connected to one end of the rotating shaft two, a support arm one is rotatably connected to the outer wall of the rotating shaft two, and a device housing is fixedly connected to one end of the support arm one.

[0008] Furthermore, a heating controller is fixedly connected to the top of the device base, a heating tube is fixedly connected to the outer wall of the heating controller, the heating tube is disposed inside the device housing, a water tank is fixedly connected to the top of the device base, a water pipe is fixedly connected to the outer wall of the water tank, and the water pipe is disposed inside the device housing.

[0009] Furthermore, an extrusion screw is fixedly connected to the outer wall of the rotating shaft, and a device housing is provided on the outer wall of the extrusion screw. One end of the rotating shaft is rotatably connected to the speed control chamber, and the other end of the rotating shaft is rotatably connected to a circular module.

[0010] Furthermore, an arc-shaped module is fixedly connected to the outer wall of the device housing, and a buckle is fixedly connected to the top of the device housing.

[0011] Furthermore, the transition cavity is fixedly connected to the inner wall of the device housing, and a rotating bracket is provided at the bottom of the device housing.

[0012] Furthermore, a speed control chamber is fixedly connected to the output end of the motor, and the chain is set on one side of the outer wall of the partition.

[0013] Furthermore, a rotating bracket is fixedly connected to the top of the device base, and the rotating shaft is fixedly connected to the inner wall of the device housing.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the starting motor output drives gear two to rotate, gear two rotates to drive gear one, gear one rotates to drive shaft one, shaft one is the core actuator for plasticizing and conveying, shaft one rotates to drive sprocket to rotate, sprocket rotates to drive chain to rotate, and the chain enables multiple gears to rotate synchronously, the chain drives shaft three to rotate, shaft three rotates to drive rotary valve to rotate, and the rotary valve accurately dispenses material to keep the amount of plastic entering the extruder stable.

[0016] 2. In this utility model, by lifting the elongated handle and rotating it on the fifth rotating shaft, the fifth rotating shaft drives the outer shell of the device and the arc-shaped module. The arc-shaped module rotates on the sixth rotating shaft, and the outer shell of the device rotates on the second rotating shaft with the support of the second supporting arm. The second rotating shaft is fixed on the rotating bracket. There are two support arms, and the first support arm is provided. The support arms firmly fix the outer shell of the device, so that when it is necessary to clean the inside, the elongated handle can be lifted. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a multi-layer composite plastic extruder proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the extrusion screw structure of a multi-layer composite plastic extruder proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the rotary valve structure of a multi-layer composite plastic extruder proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the chain section structure of a multi-layer composite plastic extruder proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of the buckle structure of a multi-layer composite plastic extruder proposed in this utility model;

[0022] Figure 6 This is a schematic diagram of the arc-shaped module structure of a multi-layer composite plastic extruder proposed in this utility model.

[0023] Legend:

[0024] 1. Motor; 2. Feed hopper; 3. Chain; 4. Transition chamber; 5. Device housing; 6. Long handle; 7. Rotating bracket; 8. Support arm one; 9. Support arm two; 10. Heating controller; 11. Water tank; 12. Heating tube; 13. Water pipe; 14. Speed ​​control chamber; 15. Device base; 16. Rotating shaft one; 17. Extrusion screw; 18. Arc module; 19. Rotating shaft two; 20. Rotary valve; 21. Rotating shaft three; 22. Gear one; 23. Gear two; 24. Sprocket; 25. Buckle; 26. Partition; 27. Rotating shaft five; 28. Rotating shaft six; 29. ​​Circular module. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1-4 This utility model provides an embodiment of a multi-layer composite plastic extruder, including a device housing 5, a device base 15 below the device housing 5, a transmission assembly inside the device housing 5, and a locking assembly on the outer wall of the device housing 5. The transmission assembly includes a rotating shaft 16, which, when rotating, simultaneously drives the extrusion screw 17 and the partition plate 26 to rotate. The extrusion screw 17 pushes the material towards the die head through the rotation of the spiral blades, achieving continuous extrusion. The device housing 5 is located on the outer wall of the rotating shaft 16, and the partition plate 26 is fixedly connected to the outer wall of the rotating shaft 16. The partition plate 26 isolates the raw material to prevent it from entering the device. A sprocket 2 is located on one side of the outer wall of the partition plate 26. 4. A chain 3 is installed above the device base 15 to achieve synchronous transmission of gears. The chain 3 is meshed with the sprocket 24. A gear 22 is fixedly connected to the outer wall of the rotating shaft 16. A motor 1 is installed above the device base 15. A gear 23 is fixedly connected to the output end of the motor 1. The gear 23 is meshed with the gear 22. A rotating shaft 21 is fixedly connected to the inner wall of the sprocket 24. A rotary valve 20 is fixedly connected to the outer wall of the rotating shaft 21. After the raw material is poured into the feed hopper 2, the raw material is evenly fed through the rotary valve 20, thereby ensuring that the melt layers are evenly compounded at the composite die head according to a predetermined ratio. A transition cavity 4 is rotatably connected to the outer wall of the rotating shaft 21. The feed hopper 2 is fixedly connected to the top of the transition cavity 4.

[0027] Reference Figures 1-6The locking assembly includes an arc-shaped module 18, with a device housing 5 fixedly connected to its outer wall. A rotating shaft 28 is rotatably connected to the arc-shaped module 18. A buckle 25 is fixedly connected to the top of the arc-shaped module 18, securing the device housing 5 and preventing loosening during operation. A rotating shaft 27 is rotatably connected to the inner wall of the buckle 25, and an elongated handle 6 is fixedly connected to the outer wall of the rotating shaft 27, allowing the device housing 5 to be disassembled. The bottom of the arc-shaped module 18 is provided with... Support arm 2 9, with a rotating shaft 2 19 rotatably connected to its inner wall. The rotating shaft 2 19 is used to fix and rotate the device housing 5 when it is disassembled. A rotating bracket 7 is fixedly connected to one end of the rotating shaft 2 19, and support arm 1 8 is rotatably connected to its outer wall. The device housing 5 is fixedly connected to one end of support arm 1 8. The device housing 5 can be opened and closed by moving support arm 1 8 and support arm 2 9. A heating controller 10 is fixedly connected to the top of the device base 15, and a heating controller 10 is fixedly connected to its outer wall. Heating tube 12 is heated by heating controller 10 to heat the raw material. Heating tube 12 is installed inside the device housing 5. Water tank 11 is fixedly connected to the top of device base 15. Water pipe 13 is fixedly connected to the outer wall of water tank 11. Water is supplied from water tank 11 to water pipe 13 to cool the raw material. Water pipe 13 is installed inside device housing 5. Extrusion screw 17 is fixedly connected to the outer wall of rotating shaft 16. Device housing 5 is installed on the outer wall of extrusion screw 17. One end of rotating shaft 16 is rotatably connected to... In the speed control chamber 14, a circular module 29 is rotatably connected to the other end of the rotating shaft 16. An arc-shaped module 18 is fixedly connected to the outer wall of the device housing 5. A buckle 25 is fixedly connected to the top of the device housing 5. The transition cavity 4 is fixedly connected to the inner wall of the device housing 5. A rotating bracket 7 is provided at the bottom of the device housing 5. The output end of the motor 1 is fixedly connected to the speed control chamber 14. The chain 3 is provided on one side of the outer wall of the partition 26. The rotating bracket 7 is fixedly connected to the top of the device base 15. The rotating shaft 28 is fixedly connected to the inner wall of the device housing 5.

[0028] Working principle: When a multi-layer composite plastic extruder is used, the starting motor 1 drives gear 23 to rotate, gear 23 drives gear 22 to rotate, gear 22 drives shaft 16 to rotate, shaft 16 drives sprocket 24 to rotate, sprocket 24 drives chain 3 to rotate, achieving synchronous rotation. Sprocket 24 drives shaft 3 to rotate, shaft 21 drives rotary valve 20 to rotate, pouring plastic into the feed hopper 2. The rotary valve 20 precisely dispenses the plastic into the extruder, keeping the amount of plastic entering the extruder stable. Shaft 3 rotates inside the device housing 5. Shaft 16 drives the extrusion screw 17 to rotate, and the extrusion screw 17 melts and mixes the plastic particles inside the device housing 5. Shaft 16 drives the partition 26 and the circular module 29 to rotate synchronously, preventing plastic from spilling out.

[0029] In addition, when the elongated handle 6 is lifted, it causes the buckle 25 to rotate. The buckle 25 rotates on the fifth rotating shaft 27. When the buckle 25 moves, it causes the arc-shaped module 18 to rotate. The arc-shaped module 18 rotates on the sixth rotating shaft 28. When the buckle 25 moves, it causes the device housing 5 to move. The device housing 5 moves through the first support arm 8 and the second support arm 9. The first support arm 8 and the second support arm 9 rotate simultaneously on the second rotating shaft 19. The second rotating shaft 19 is fixed on the rotating bracket 7.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is 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, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-layer composite plastic extruder comprising a device housing (5), characterized in that: A device base (15) is provided below the device housing (5), a transmission component is provided inside the device housing (5), and a locking component is provided on the outer wall of the device housing (5). The transmission assembly includes a rotating shaft (16), a device housing (5) is provided on the outer wall of the rotating shaft (16), a partition (26) is fixedly connected to the outer wall of the rotating shaft (16), a sprocket (24) is provided on one side of the outer wall of the partition (26), a chain (3) is provided above the device base (15), the chain (3) is meshed with the sprocket (24), a gear (22) is fixedly connected to the outer wall of the rotating shaft (16), a motor (1) is provided above the device base (15), a gear (23) is fixedly connected to the output end of the motor (1), the gear (23) is meshed with the gear (22), a rotating shaft (21) is fixedly connected to the inner wall of the sprocket (24), a rotary valve (20) is fixedly connected to the outer wall of the rotating shaft (21), a transition cavity (4) is rotatably connected to the outer wall of the rotating shaft (21), and a feed hopper (2) is fixedly connected to the top of the transition cavity (4).

2. A multi-layered composite plastic extruder as claimed in claim 1, wherein: The locking assembly includes an arc-shaped module (18), the outer wall of which is fixedly connected to a device housing (5), the arc-shaped module (18) is rotatably connected to a pivot six (28), the top of the arc-shaped module (18) is fixedly connected to a buckle (25), the inner wall of the buckle (25) is rotatably connected to a pivot five (27), the outer wall of the pivot five (27) is fixedly connected to a long handle (6), the bottom of the arc-shaped module (18) is provided with a support arm two (9), the inner wall of the support arm two (9) is rotatably connected to a pivot two (19), one end of the pivot two (19) is fixedly connected to a rotating bracket (7), the outer wall of the pivot two (19) is rotatably connected to a support arm one (8), and one end of the support arm one (8) is fixedly connected to a device housing (5).

3. A multi-layered composite plastic extruder as claimed in claim 2, wherein: A heating controller (10) is fixedly connected to the top of the device base (15). A heating tube (12) is fixedly connected to the outer wall of the heating controller (10). The heating tube (12) is located inside the device housing (5). A water tank (11) is fixedly connected to the top of the device base (15). A water pipe (13) is fixedly connected to the outer wall of the water tank (11). The water pipe (13) is located inside the device housing (5).

4. A multi-layered composite plastic extruder as claimed in claim 1, wherein: The outer wall of the rotating shaft (16) is fixedly connected to an extrusion screw (17), and the outer wall of the extrusion screw (17) is provided with a device housing (5). One end of the rotating shaft (16) is rotatably connected to the speed control chamber (14), and the other end of the rotating shaft (16) is rotatably connected to a circular module (29).

5. A multi-layered composite plastic extruder as claimed in claim 2, wherein: An arc-shaped module (18) is fixedly connected to the outer wall of the device housing (5), and a buckle (25) is fixedly connected to the top of the device housing (5).

6. A multi-layered composite plastic extruder as claimed in claim 2, wherein: The transition cavity (4) is fixedly connected to the inner wall of the device housing (5), and a rotating bracket (7) is provided at the bottom of the device housing (5).

7. A multi-layered composite plastic extruder as claimed in claim 1, wherein: The output end of the motor (1) is fixedly connected to a speed control chamber (14), and the chain (3) is set on one side of the outer wall of the partition (26).

8. A multi-layered composite plastic extruder as claimed in claim 2, wherein: The device base (15) is fixedly connected to a rotating bracket (7) at the top, and the rotating shaft (28) is fixedly connected to the inner wall of the device housing (5).

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