Feeding structure for an extruder

Abstract

The utility model relates to extruder feeding technology field, and disclose a kind of feeding structure of extruder, including double-screw extruder in prior art and the hopper of installation in double-screw extruder feed port, still include scraper, be provided with the stirring assembly of the material in hopper for stirring in scraper, be provided with the connecting assembly of driving scraper along the inner wall of hopper in hopper, rotating component is arranged on connecting component, so that connecting component makes the circumferential motion of rotating component around hopper surface, rotating component is connected with hopper surface, the drive component of the shell top of double-screw extruder is provided with the rotating component work, and the plastic particle debris adhered on the inner wall of hopper is scraped off by the scraper of movement, and the plastic particle debris of scraping off falls along the scraper to hopper bottom, to remove the particle debris adhered on the inner wall of hopper, avoid plastic particle debris residue, reduce different batches, different color plastic particle cross infection, to ensure that product color and purity are consistent.

Description

Technical Field

[0001] This utility model relates to the field of extruder feeding technology, and more specifically to a feeding structure for an extruder. Background Technology

[0002] In the field of extrusion processing, twin-screw extruders are widely used in the processing of polymer materials such as plastics and rubber due to their advantages such as uniform mixing and good plasticizing effect. The hopper, as the core feeding component of the twin-screw extruder, plays a key role in storing plastic granules and stably conveying them into the extruder.

[0003] When existing hoppers convey sticky plastic granules into a twin-screw extruder, plastic debris easily remains on the inner wall of the hopper and accumulates due to frictional resistance or the adhesiveness of the granules themselves. When processing different batches and colors of plastic granules, if the residual plastic granule debris cannot be effectively removed, it will mix into the new batch of material, resulting in uneven color and decreased purity in the finished product. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a feeding structure for an extruder to solve the problems in the background art.

[0005] This utility model provides the following technical solution: a feeding structure for an extruder, including a twin-screw extruder as in the prior art and a hopper installed at the feed inlet of the twin-screw extruder, and also including a scraper, the scraper being in close contact with the inner wall of the hopper, a stirring assembly for stirring the material in the hopper being provided on the scraper, a connecting assembly for driving the scraper to move along the inner wall of the hopper being provided inside the hopper, a rotating assembly for causing the connecting assembly to move in a circular motion around the surface of the hopper being provided on the connecting assembly, the rotating assembly being connected to the surface of the hopper, and a driving assembly for operating the rotating assembly being provided on the top of the housing of the twin-screw extruder.

[0006] Furthermore, the drive assembly includes a servo motor, a power rod, and a drive gear. The fixed end of the servo motor is fixedly connected to the top of the housing of the twin-screw extruder, the power rod is fixedly connected to the output end of the servo motor, and the drive gear is fixedly sleeved on the power rod.

[0007] Furthermore, the rotating assembly includes a fixed ring and a ring gear. The fixed ring is fixedly sleeved on the surface of the hopper, and the ring gear is sleeved on the fixed ring and rotatably connected to the fixed ring. The drive gear meshes with the outer teeth of the ring gear.

[0008] Furthermore, the connecting assembly includes a connecting rod and a connecting block. One end of the connecting rod is fixedly connected to the top of the ring gear, the connecting block is fixedly connected to the other end of the connecting rod, the scraper is fixedly connected to the connecting block, and the connecting block is slidably engaged with the top of the hopper.

[0009] Furthermore, the stirring assembly includes two first stirring rods and a second stirring rod. One end of each of the two first stirring rods is fixedly connected to a scraper, and the surface of the second stirring rod is fixedly connected to the other end of the two first stirring rods.

[0010] Furthermore, a conical block is fixedly installed on the top of the second stirring rod.

[0011] Furthermore, the hopper surface is sprayed with anti-corrosion paint.

[0012] The technical effects and advantages of this utility model are as follows: 1. This utility model uses a connecting block to drive a scraper to move along the inner wall of the hopper. The moving scraper scrapes off the plastic granules and debris adhering to the inner wall of the hopper. The scraped plastic granules and debris fall along the scraper to the bottom of the hopper, thereby removing the granules and debris adhering to the inner wall of the hopper, avoiding the residue of plastic granules and debris, reducing cross-contamination between different batches and different colors of plastic granules, and thus ensuring the consistency of the color and purity of the finished product.

[0013] 2. This utility model uses a rotating first and second stirring rod to stir the plastic granules in the hopper, preventing the accumulation of a large number of plastic granules and generating compressive stress. It also controls the feeding speed of the plastic granules, ensuring a stable amount of plastic granules entering the twin-screw extruder. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the hopper structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the hopper of this utility model.

[0015] The attached figures are labeled as follows: 1. Twin-screw extruder; 2. Hopper; 3. Scraper; 4. Mixing assembly; 401. First mixing rod; 402. Second mixing rod; 5. Connecting assembly; 501. Connecting rod; 502. Connecting block; 6. Rotating assembly; 601. Fixed ring; 602. Ring gear; 7. Drive assembly; 701. Servo motor; 702. Power rod; 703. Drive gear; 8. Conical block. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0017] Figures 1-3This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figure 1 ~Attached Figure 3 The present invention will be further described below.

[0018] This utility model discloses a feeding structure for an extruder, including a twin-screw extruder 1 as in the prior art and a hopper 2 installed at the feed inlet of the twin-screw extruder 1. It also includes a scraper 3, which is in close contact with the inner wall of the hopper 2. The scraper 3 is provided with a stirring assembly 4 for stirring the material in the hopper 2. A connecting assembly 5 is provided inside the hopper 2 to drive the scraper 3 to move along the inner wall of the hopper 2. A rotating assembly 6 is provided on the connecting assembly 5 to make the connecting assembly 5 move in a circular motion around the surface of the hopper 2. The rotating assembly 6 is connected to the surface of the hopper 2. A driving assembly 7 is provided on the top of the housing of the twin-screw extruder 1 to make the rotating assembly 6 work.

[0019] In this implementation scheme, when in use, the operator pours plastic granules into the hopper 2. The drive assembly 7 rotates, causing the connecting assembly 5 to rotate around the surface of the hopper 2. The rotating connecting assembly 5 drives the scraper 3 to rotate, which in turn drives the stirring assembly 4 to rotate. The rotating scraper 3 and the stirring assembly 4 stir the plastic granules entering the hopper 2, preventing the plastic granules from squeezing each other and accumulating. The feeding speed of the granules can be controlled to ensure a stable amount of plastic granules entering the twin-screw extruder 1, thus ensuring consistent product quality. The rotating scraper 3 rotates along the inner wall of the hopper 2, scraping off the plastic granule debris remaining on the inner wall of the hopper 2. The scraped plastic granule debris falls along the scraper 3 to the bottom of the hopper 2, thereby removing the granule debris adhering to the inner wall of the hopper 2, avoiding plastic granule residue, reducing cross-contamination between different batches and different colors of plastic granules, and ensuring consistent color and purity of the finished product.

[0020] The twin-screw extruder 1 is an existing device and will not be explained here.

[0021] Specifically, the drive assembly 7 includes a servo motor 701, a power rod 702, and a drive gear 703. The fixed end of the servo motor 701 is fixedly connected to the top of the housing of the twin-screw extruder 1, the power rod 702 is fixedly connected to the output end of the servo motor 701, and the drive gear 703 is fixedly sleeved on the power rod 702.

[0022] In this embodiment, when material is fed through hopper 2, servo motor 701 is started, servo motor 701 drives power rod 702 to rotate, and power rod 702 drives drive gear 703 to rotate.

[0023] Specifically, the rotating assembly 6 includes a fixed ring 601 and a ring gear 602. The fixed ring 601 is fixedly sleeved on the surface of the hopper 2, and the ring gear 602 is sleeved on the fixed ring 601 and rotatably connected to the fixed ring 601. The driving gear 703 meshes with the external teeth of the ring gear 602.

[0024] In this embodiment, the drive gear 703 rotates, which in turn drives the ring gear 602 to rotate, and the ring gear 602 rotates along the fixed ring 601.

[0025] Specifically, the connecting component 5 includes a connecting rod 501 and a connecting block 502. One end of the connecting rod 501 is fixedly connected to the top of the ring gear 602, and the connecting block 502 is fixedly connected to the other end of the connecting rod 501. The scraper 3 is fixedly connected to the connecting block 502, and the connecting block 502 is slidably engaged with the top of the hopper 2.

[0026] In this embodiment, when the ring gear 602 rotates, it drives the connecting rod 501 to move in a circular motion around the hopper 2. The connecting rod 501 drives the connecting block 502 to move, so that the moving connecting block 502 slides along the top of the hopper 2. The sliding connecting block 502 scrapes off the plastic particles remaining on the top of the hopper 2. When the connecting block 502 moves and drives the scraper 3 to move along the inner wall of the hopper 2, the moving scraper 3 scrapes off the plastic particle debris adhering to the inner wall of the hopper 2. The scraped plastic particle debris falls along the scraper 3 to the bottom of the hopper 2, thereby removing the particle debris adhering to the inner wall of the hopper 2, avoiding the residue of plastic particle debris, reducing cross-contamination of plastic particles of different batches and colors, and thus ensuring the consistency of the color and purity of the finished product.

[0027] Specifically, the stirring assembly 4 includes two first stirring rods 401 and a second stirring rod 402. One end of each of the two first stirring rods 401 is fixedly connected to the scraper 3, and the surface of the second stirring rod 402 is fixedly connected to the other end of the two first stirring rods 401.

[0028] In this embodiment, when the scraper 3 moves in a circular motion along the inner wall of the hopper 2, it drives the two first stirring rods 401 to rotate. The two first stirring rods 401 drive the second stirring rod 402 to rotate. The rotating first stirring rods 401 and second stirring rods 402 stir the plastic particles in the hopper 2, preventing the accumulation of a large number of plastic particles and generating compressive stress. This prevents the accumulation of plastic particles, controls the feeding speed of the plastic particles, and ensures that the amount of plastic particles entering the twin-screw extruder 1 is stable.

[0029] Specifically, a conical block 8 is fixedly installed on the top of the second stirring rod 402.

[0030] In this implementation scheme, when the worker pours plastic granules into the hopper 2, the plastic granules fall into the hopper 2 and come into contact with the conical part of the conical block 8. The conical part disperses the plastic granules, thereby reducing the risk of plastic granules being squeezed and clogging the hopper 2.

[0031] Specifically, the surface of hopper 2 is sprayed with anti-corrosion paint.

[0032] In this implementation plan, anti-corrosion paint is sprayed to prevent rust from forming on the surface of the hopper 2, thereby increasing the service life of the equipment.

[0033] The working principle and usage process of this utility model are as follows: When in use, the operator pours plastic granules into the hopper 2. The plastic granules fall into the hopper 2 and come into contact with the conical part of the conical block 8. The conical part disperses the plastic granules, thereby reducing the risk of plastic granules being squeezed and clogging the hopper 2. The servo motor 701 is started, which drives the power rod 702 to rotate. The power rod 702 drives the drive gear 703 to rotate, which in turn drives the ring gear 602 to rotate. The ring gear 602 rotates along the fixed ring 601. When the ring gear 602 rotates, it drives the connecting rod 501 to move in a circular motion around the hopper 2. The connecting rod 501 drives the connecting block 502 to move, causing the moving connecting block 502 to slide along the top of the hopper 2. The sliding connecting block 502 scrapes off the plastic granules remaining on the top of the hopper 2. When the connecting block 502 moves, it drives the scraper 3 to move along the inner wall of the hopper 2. The moving scraper 3 scrapes off the plastic granules adhering to the inner wall of the hopper 2. The plastic granules are scraped off and fall along the scraper 3 to the bottom of the hopper 2, thus removing the plastic granules adhering to the inner wall of the hopper 2, avoiding plastic granule residue, reducing cross-contamination between different batches and colors of plastic granules, and ensuring the consistency of the finished product color and purity. When the scraper 3 moves in a circular motion along the inner wall of the hopper 2, it drives the two first stirring rods 401 to rotate. The two first stirring rods 401 drive the second stirring rod 402 to rotate. The rotating first stirring rods 401 and second stirring rods 402 stir the plastic granules in the hopper 2, preventing the accumulation of a large number of plastic granules and generating compressive stress. It can control the feeding speed of the granules and ensure a stable amount of plastic granules entering the twin-screw extruder 1. The plastic granules fall from the hopper 2 into the twin-screw extruder 1 and are conveyed by the twin-screw structure in the twin-screw extruder 1. During the conveying process, the plastic granules are heated, and the heated and melted plastic granules are extruded from the extrusion end of the twin-screw extruder 1.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A feeding structure for an extruder, comprising a twin-screw extruder (1) as in the prior art and a hopper (2) installed at the feed inlet of the twin-screw extruder (1), characterized in that: It also includes a scraper (3), which is in close contact with the inner wall of the hopper (2). The scraper (3) is provided with a stirring assembly (4) for stirring the material in the hopper (2). The hopper (2) is provided with a connecting assembly (5) that drives the scraper (3) to move along the inner wall of the hopper (2). The connecting assembly (5) is provided with a rotating assembly (6) that makes the connecting assembly (5) move in a circular motion around the surface of the hopper (2). The rotating assembly (6) is connected to the surface of the hopper (2). The top of the shell of the twin-screw extruder (1) is provided with a drive assembly (7) that makes the rotating assembly (6) work.

2. The feeding structure of an extruder according to claim 1, characterized in that: The drive assembly (7) includes a servo motor (701), a power rod (702), and a drive gear (703). The fixed end of the servo motor (701) is fixedly connected to the top of the housing of the twin-screw extruder (1). The power rod (702) is fixedly connected to the output end of the servo motor (701). The drive gear (703) is fixedly sleeved on the power rod (702).

3. The feeding structure of an extruder according to claim 2, characterized in that: The rotating assembly (6) includes a fixed ring (601) and a ring gear (602). The fixed ring (601) is fixedly sleeved on the surface of the hopper (2). The ring gear (602) is sleeved on the fixed ring (601) and rotatably connected to the fixed ring (601). The driving gear (703) meshes with the external teeth of the ring gear (602).

4. The feeding structure of an extruder according to claim 3, characterized in that: The connecting assembly (5) includes a connecting rod (501) and a connecting block (502). One end of the connecting rod (501) is fixedly connected to the top of the ring gear (602), and the connecting block (502) is fixedly connected to the other end of the connecting rod (501). The scraper (3) is fixedly connected to the connecting block (502), and the connecting block (502) is slidably engaged with the top of the hopper (2).

5. The feeding structure of an extruder according to claim 4, characterized in that: The stirring assembly (4) includes two first stirring rods (401) and a second stirring rod (402). One end of each of the two first stirring rods (401) is fixedly connected to the scraper (3), and the surface of the second stirring rod (402) is fixedly connected to the other end of the two first stirring rods (401).

6. The feeding structure of an extruder according to claim 5, characterized in that: A conical block (8) is fixedly installed on the top of the second stirring rod (402).

7. The feeding structure of an extruder according to claim 1, characterized in that: The surface of the hopper (2) is sprayed with anti-corrosion paint.

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