Feeding assembly for double-screw extruder

Abstract

The utility model discloses a feeding assembly for a twin-screw extruder, the material output end of the feeding assembly is used for being communicated with the material input end of an extruder body, the feeding assembly comprises a lifting part, a feeding part, a feeding part and a discharging part, the lifting part is located at the top end of the extruder body; the lifting screw rod is arranged in the lifting part; the bevel gear b is arranged at the tail end of the lifting screw rod; the gear transmission part is arranged at the top end of the lifting part; and the raw material storage tank is arranged at the top end of the extruder body, and the feeding screw rod is located in the raw material storage tank. According to the feeding device, the gear transmission part is arranged, in the feeding process, the feeding screw in the raw material storage tank and the lifting screw in the lifting part can be driven by the motor to rotate, so that the feeding device can feed materials into the extruder body at a constant speed while feeding the materials, and the extrusion efficiency of the extruder body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw extruders, and particularly relates to a feeding assembly for a twin-screw extruder. Background Art

[0002] A screw extruder relies on the pressure and shear force generated by the rotation of the screw, enabling the material to be fully plasticized and evenly mixed, and formed through the die. Plastic extruders can be basically classified into twin-screw extruders, single-screw extruders, and rarely seen multi-screw extruders and screwless extruders. Twin-screw extruders are often used in the production process of wire and cable to mix their raw materials.

[0003] However, in the existing twin-screw extruders, plastic raw material particles are generally directly added to the hopper above. Not only does it require operators to manually lift the plastic raw material particles to a certain height, but also adding too many plastic raw material particles at one time will cause blockage, affecting the extrusion efficiency of the plastic. Content of the Utility Model

[0004] The purpose of the utility model is to provide a feeding assembly for a twin-screw extruder to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A feeding assembly for a twin-screw extruder, the material output end of the feeding assembly is used to communicate with the material input end of the extruder body. The feeding assembly includes a lifting part, a lifting screw, a bevel gear b, a gear transmission part, a transmission bevel gear, a bevel gear a, a feeding screw, and a raw material storage tank. The lifting part is located at the top of the extruder body. The lifting screw is arranged inside the lifting part. The bevel gear b is arranged at the end of the lifting screw. The gear transmission part is arranged at the top of the lifting part. A power bevel gear is arranged inside the gear transmission part. The transmission bevel gear is located inside the gear transmission part. The bevel gear b is meshed and connected with the power bevel gear arranged inside the gear transmission part. Among them, the included angle between the power bevel gear and the bevel gear b is 90°. The transmission bevel gear is meshed and connected with the power bevel gear arranged inside the gear transmission part. Among them, the included angle between the power bevel gear and the transmission bevel gear is 90°. The bevel gear a is located inside the gear transmission part. The bevel gear a is meshed and connected with the transmission bevel gear arranged inside the gear transmission part. Among them, the included angle between the bevel gear a and the transmission bevel gear is 90°. The feeding screw is connected to the bottom end of the bevel gear a. The raw material storage tank is arranged at the top of the extruder body. The feeding screw is located inside the raw material storage tank.

[0006] By adopting the above technical solution, during the feeding process, the motor drives the driving bevel gear in the gear transmission part to rotate. The driving bevel gear drives the driven bevel gear and bevel gear b to rotate, and the driven bevel gear drives bevel gear a to rotate, thereby driving the feeding screw in the raw material storage tank and the lifting screw in the lifting part to rotate. This enables the feeding device to not only feed during the feeding process but also evenly feed the raw materials into the extruder body at a constant speed, improving the extrusion efficiency of the extruder body.

[0007] Preferably, the inside of the raw material storage tank is connected to the inside of the extruder body;

[0008] Among them, the raw material storage tank is rotatably connected to the installed feeding screw inside.

[0009] By adopting the above technical solution, the feeding screw can rotate inside the raw material storage tank and convey the plastic raw material particles in the raw material storage tank to the inside of the extruder body.

[0010] Preferably, the rotation axis of the feeding screw is the same as the rotation axis of bevel gear a,

[0011] Among them, bevel gear a is rotatably connected to the gear transmission part.

[0012] By adopting the above technical solution, bevel gear a can rotate inside the transmission part.

[0013] Preferably, one end of the lifting part is provided with a feeding port, and the other end of the lifting part is provided with a connecting pipe.

[0014] By adopting the above technical solution, the plastic raw material particles can enter the inside of the lifting part through the feeding port and enter the inside of the connecting pipe after being lifted.

[0015] Preferably, the inside of the lifting part is connected to the inside of the raw material storage tank through the connecting pipe, and the lifting part is rotatably connected to the installed lifting screw inside.

[0016] By adopting the above technical solution, through the rotation of the lifting screw, the plastic raw material particles in the lifting part can enter the inside of the raw material storage tank from the connecting pipe after being lifted.

[0017] Preferably, the rotation axis of the lifting screw is the same as the rotation axis of bevel gear b,

[0018] Among them, bevel gear b is rotatably connected to the gear transmission part.

[0019] By adopting the above technical solution, bevel gear b can rotate inside the gear transmission part.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] 1. By providing a gear transmission part, during the feeding process, the motor can drive the driving bevel gear in the gear transmission part to rotate. The driving bevel gear drives the driven bevel gear and bevel gear b to rotate, and the driven bevel gear will drive bevel gear a to rotate, thereby driving the feeding screw in the raw material storage tank and the lifting screw in the lifting part to rotate. This enables the feeding device to not only feed while also evenly feeding into the extruder body, improving the extrusion efficiency of the extruder body.

[0022] 2. By providing the driving bevel gear and the driven bevel gear, they can drive the feeding screw and the lifting screw to rotate simultaneously, improving the utilization rate of power and saving labor costs and time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of this application;

[0024] Figure 2 is a schematic diagram of the overall front cross-sectional structure of this application;

[0025] Figure 3 is a schematic diagram of the overall side cross-sectional structure of this application;

[0026] Figure 4 is a schematic diagram of the connection structure of the feeding screw and the lifting screw of this application.

[0027] In the figure: 1. Extruder body; 2. Raw material storage tank; 3. Gear transmission part; 4. Lifting part; 5. Feeding screw; 6. Bevel gear a; 7. Lifting screw; 8. Bevel gear b; 9. Driven bevel gear; 10. Driving bevel gear; 11. Motor; 12. Inlet; 13. Connecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figure 1 , Figure 2 and Figure 3, the present utility model provides a technical solution: a feeding assembly for a twin-screw extruder. The material output end of the feeding assembly is used to communicate with the material input end of the extruder body 1. The feeding assembly includes: a lifting part. The lifting part 4 is located at the top of the extruder body 1. A raw material storage tank 2 is installed at the top of the extruder body 1. The inside of the raw material storage tank 2 is connected to the inside of the extruder body 1, and the raw material storage tank 2 is rotatably connected to the feeding screw 5 installed inside. The feeding screw 5 can rotate inside the raw material storage tank 2 and convey the plastic raw material particles in the raw material storage tank 2 into the inside of the extruder body 1. A lifting part 4 is installed on one side of the raw material storage tank 2. An inlet 12 is provided at one end of the lifting part 4, and a connecting pipe 13 is provided at the other end of the lifting part 4. The plastic raw material particles can enter the inside of the lifting part 4 through the inlet 12 and enter the inside of the connecting pipe 13 after being lifted. The inside of the lifting part 4 is connected to the inside of the raw material storage tank 2 through the connecting pipe 13, and the lifting part 4 is rotatably connected to the lifting screw 7 installed inside. By rotating the lifting screw 7, the plastic raw material particles in the lifting part 4 can be lifted and then enter the raw material storage tank 2 from the connecting pipe 13.

[0030] Please refer to Figure 2 , Figure 3 and Figure 4 , a gear transmission part 3 is installed at the top of the raw material storage tank 2. A motor 11 is installed on the side of the gear transmission part 3. A driving bevel gear 10 is installed inside the gear transmission part 3. The driving bevel gear 10 is meshed with the transmission bevel gear 9 on one side. The included angle between the driving bevel gear 10 and the transmission bevel gear 9 is 90°. The driving bevel gear 10 is coaxial with the output end of the motor 11. A bevel gear b8 is installed at the top of the lifting screw 7, and the bevel gear b8 is rotatably connected to the gear transmission part 3. The bevel gear b8 can rotate inside the gear transmission part 3. The driving bevel gear 10 is meshed with the bevel gear b8 on one side. The included angle between the driving bevel gear 10 and the transmission bevel gear b8 is 90°. A bevel gear a6 is installed at the top of the feeding screw 5, and the bevel gear a6 is rotatably connected to the gear transmission part 3. The bevel gear a6 can rotate inside the gear transmission part 3. The transmission bevel gear 9 is meshed with the bevel gear a6 on one side. The included angle between the driving bevel gear 10 and the bevel gear a6 is 90°.

[0031] Working principle: First, during the feeding process, the operator first pours plastic raw material particles into the feeding port 12, and then starts the motor 11. The motor 11 drives the power bevel gear 10 in the gear transmission part 3 to rotate, causing the power bevel gear 10 to drive the transmission bevel gear 9 and bevel gear b 8 engaged with it to rotate inside the gear transmission part 3. Then, the transmission bevel gear 9 drives the bevel gear a 6 engaged with it to rotate inside the gear transmission part 3, further driving the feeding screw 5 in the raw material storage tank 2 and the lifting screw 7 in the lifting part 4 to rotate. As a result, the plastic raw material particles in the feeding port 12 are lifted and conveyed into the interior of the lifting part 4, and after lifting, they enter the interior of the connecting pipe 13, enter the interior of the raw material storage tank 2 from the connecting pipe 13, and are then evenly conveyed into the interior of the extruder body 1 by the rotating feeding screw 5, improving the extrusion efficiency of the extruder body 1;

[0032] Secondly, by setting the power bevel gear 10 and the transmission bevel gear 9, the feeding screw 5 and the lifting screw 7 can be driven to rotate simultaneously, improving the utilization rate of power and saving labor costs and time costs. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feeding assembly for a twin-screw extruder, wherein the material output end of the feeding assembly is used to communicate with the material input end of the extruder body, characterized in that: The loading components include: A lifting part, the lifting part is located at the top of the extruder body; a lifting screw rod, the lifting screw rod being arranged inside the lifting part; a bevel gear b, wherein the bevel gear b is arranged at the end of the lifting screw; a gear transmission part, the gear transmission part is arranged at the top end of the lifting part, a power bevel gear is arranged inside the gear transmission part, the bevel gear b is meshed and connected with the power bevel gear arranged inside the gear transmission part; wherein the angle between the power bevel gear and the bevel gear b is 90°; A transmission bevel gear, the transmission bevel gear is located inside the gear transmission part, and the transmission bevel gear is meshed with the power bevel gear arranged inside the gear transmission part; wherein the included angle between the power bevel gear and the transmission bevel gear is 90°; a bevel gear a, wherein the bevel gear a is located inside the gear transmission part and is meshedly connected with a transmission bevel gear disposed inside the gear transmission part; wherein the bevel gear a and the transmission bevel gear form an angle of 90°; A feeding screw connected to the bottom end of the bevel gear a; A raw material storage tank is arranged at the top of the extruder body, and the feeding screw is located in the raw material storage tank.

2. A feeding assembly for a twin-screw extruder according to claim 1, characterized in that: The interior of the raw material storage tank is connected to the interior of the extruder body; the raw material storage tank is rotationally connected to a feeding screw installed inside.

3. A feeding assembly for a twin-screw extruder according to claim 2, characterized in that: The rotation axis of the feeding screw is the same as the rotation axis of the bevel gear a, and the bevel gear a is rotationally connected to the gear transmission part.

4. A feeding assembly for a twin-screw extruder according to claim 3, characterized in that: A material inlet is provided at one end of the lifting part, and a connecting pipe is provided at the other end of the lifting part.

5. A feeding assembly for a twin-screw extruder according to claim 4, characterized in that: The interior of the lifting part is connected to the interior of the raw material storage tank through the connecting pipe, and the lifting part is rotationally connected to the lifting screw installed inside the lifting part.

6. A feeding assembly for a twin-screw extruder according to claim 5, characterized in that: The rotation axis of the lifting screw is the same as the rotation axis of the bevel gear b, and the bevel gear b is rotationally connected to the gear transmission part.

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