Automatic auxiliary material conveying device for double-screw extruder

Abstract

The utility model relates to the technical field of conveying mechanisms, in particular to an automatic auxiliary material conveying device for a double-screw extruder, which comprises a moving frame, two fixing frames distributed in an axial symmetry manner are fixedly mounted on the upper surface of the moving frame, and a material conveying mechanism is arranged on the inner sides of the two fixing frames. A hopper is arranged over each fixing frame, a conveying pipe is arranged at the top end of each hopper, a clamping mechanism used for the conveying pipes is arranged on the outer side of the upper end of each hopper, a conveying mechanism is arranged on the inner side of each fixing frame, meanwhile, a movable frame is installed on a sliding rail in a sliding mode, and under the mutual cooperation of the conveying pipes, the hoppers and the conveying mechanisms, the movable frames can move in a sliding mode. The auxiliary materials conveyed in the material conveying pipe can be conveniently conveyed into the material conveying mechanism and then conveyed into the extruder through the material conveying mechanism, the sliding rail is arranged below the moving frame, the moving frame can be pushed to a feeding port of the extruder when the auxiliary materials are needed, the moving frame can be moved out when the auxiliary materials are not needed, and meanwhile the extruder is not hindered to put plastic particles.

Description

Technical Field

[0001] This utility model relates to the field of conveying mechanism technology, and in particular to an automatic conveying device for auxiliary materials in a twin-screw extruder. Background Technology

[0002] Twin-screw extruders are widely used in plastics processing, rubber processing, chemical products, and the food industry, and the auxiliary material conveying device is a very important component. The auxiliary material conveying device is mainly used to accurately and uniformly transport auxiliary materials (such as color masterbatch, additives, fillers, stabilizers, etc.) from the raw materials into the extruder to ensure product quality and production efficiency.

[0003] In existing technologies, most extruder auxiliary material transport devices directly place the auxiliary materials into the extruder feed inlet through the feed pipe during the transport process. However, when the extruder needs to add plastic particles, the feed pipe needs to be removed, and this cycle repeats. This process is relatively frequent during operation, resulting in a rather cumbersome operation. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution: an automatic auxiliary material conveying device for a twin-screw extruder, comprising a movable frame, on the upper surface of which two axially symmetrically distributed fixed frames are fixedly mounted, a material conveying mechanism is provided on the inner side of the two fixed frames, a hopper is provided directly above each fixed frame, a material conveying pipe is provided at the top of the hopper, a locking mechanism for fixing the material conveying pipe is provided on the outer side of the upper end of the hopper, and slide rails are provided on both sides of the lower end of the movable frame, with the support legs of the movable frame slidably mounted inside the slide rails.

[0005] As an improvement to the above technical solution, the material conveying mechanism includes a conveying pipe fixedly installed inside the fixed frame, a screw rod rotatably installed inside the conveying pipe, a motor fixedly installed on the outer side of one end of the conveying pipe, and the output shaft of the motor fixedly connected to one end of the screw rod.

[0006] As an improvement to the above technical solution, a discharge pipe is provided between the ends of the two conveying pipes. The discharge pipe is fitted into the middle position inside the movable frame, and both conveying pipes are connected to the inside of the discharge pipe. The upper end of the discharge pipe is sealed, and the lower end of the discharge pipe is provided with an integrally formed discharge port, which is located below the movable frame.

[0007] As an improvement to the above technical solution, the lower end of each hopper is sequentially penetrated by a fixing frame and a conveying pipe, and the hopper and the conveying pipe are connected.

[0008] As an improvement to the above technical solution, the positioning mechanism includes fixed platforms fixedly installed on both sides of the upper end of the hopper. A fixed clamp is fixedly installed on the upper end of one of the fixed platforms, and a movable clamp is provided on the inner side of the other fixed platform. The material conveying pipe is located between the fixed clamp and the movable clamp. A positioning plate is fixedly installed on the side surface of the movable clamp. An integrally formed square slot is provided on the upper end of the fixed platform, and the positioning plate is movably inserted into the inside of the square slot.

[0009] As an improvement to the above technical solution, a fixing plate is fixedly installed on one side of the fixing fixture, and a lead screw is rotatably provided on the outer side of the fixing plate. The end of the lead screw is rotatably connected to the fixing plate through a rotating shaft. A connecting piece is screwed onto the outer surface of the lead screw, and one end of the connecting piece is fixedly connected to the side surface of the movable fixture.

[0010] The beneficial effects of this utility model are:

[0011] By fixing a frame to the upper surface of the mobile frame, and setting a hopper at the upper end of the frame, a conveying pipe at the upper end of the hopper, and a conveying mechanism on the inner side of the frame, while sliding the mobile frame on a slide rail, the auxiliary material conveyed in the conveying pipe can be conveniently transported to the conveying mechanism through the cooperation of the conveying pipe, the hopper, and the conveying mechanism, and then transported to the extruder by the conveying mechanism. The slide rail at the bottom of the mobile frame allows the mobile frame to be pushed to the feed port of the extruder when auxiliary material is needed, and moved out when auxiliary material is not needed, without obstructing the extruder from feeding plastic particles, thus increasing the convenience of using the overall device. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a side view of the present invention.

[0014] Figure 3 This is a bottom structural diagram of the present invention;

[0015] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0016] Figure 5 This utility model Figure 2 Enlarged structural diagram at point B in the middle.

[0017] Reference numerals in the attached drawings: 1. Movable frame; 2. Hopper; 21. Fixed platform; 22. Movable clamp; 221. Positioning plate; 222. Square slot; 23. Fixed clamp; 24. Screw; 25. Connector; 26. Fixed plate; 3. Conveying pipe; 4. Fixed frame; 5. Conveying pipe; 51. Screw rod; 6. Discharge pipe; 61. Discharge port; 7. Motor; 8. Slide rail. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0019] Please see Figure 1-5 This utility model provides a technical solution: an automatic auxiliary material conveying device for a twin-screw extruder, including a movable frame 1. Two fixed frames 4 are fixedly installed on the upper surface of the movable frame 1 in an axisymmetrical manner. A material conveying mechanism is provided on the inner side of the two fixed frames 4. A hopper 2 is provided directly above each fixed frame 4. A material conveying pipe 3 is provided at the top of the hopper 2. A locking mechanism for fixing the material conveying pipe 3 is provided on the outer side of the upper end of the hopper 2. Slide rails 8 are provided on both sides of the lower end of the movable frame 1. The support legs of the movable frame 1 are slidably installed inside the slide rails 8.

[0020] In this embodiment, a fixed frame 4 is fixedly installed on the upper surface of the movable frame 1, and a hopper 2 is provided at the upper end of the fixed frame 4. A conveying pipe 3 is fixedly connected to the upper end of the hopper 2 via a locking mechanism. A conveying mechanism is provided inside the fixed frame 4. The movable frame 1 is slidably installed on a slide rail 8. With the cooperation of the conveying pipe 3, the hopper 2, and the conveying mechanism, the auxiliary material conveyed in the conveying pipe 3 can be conveniently transported to the conveying mechanism, and then transported to the extruder by the conveying mechanism. A slide rail 8 is provided below the movable frame 1, which can push the movable frame 1 to the feed port of the extruder when auxiliary material is needed and remove the movable frame 1 when auxiliary material is not needed, without obstructing the extruder from feeding plastic particles, thereby increasing the convenience of using the overall device. In addition, the conveying pipe 3 is fixedly installed at the top of the hopper 2 via a locking mechanism, so that the hopper 2 and the conveying pipe 3 are directly connected, which can prevent the intrusion of external dust and impurities during the auxiliary material conveying process.

[0021] Specifically, the material conveying mechanism includes a conveying pipe 5 fixedly installed inside the fixed frame 4. A screw rod 51 is rotatably installed inside the conveying pipe 5. A motor 7 is fixedly installed on the outer side of one end of the conveying pipe 5, and the output shaft of the motor 7 is fixedly connected to one end of the screw rod 51. A discharge pipe 6 is provided between the ends of the two conveying pipes 5. The discharge pipe 6 is embedded in the middle position inside the movable frame 1, and both conveying pipes 5 are connected to the inside of the discharge pipe 6. The upper end of the discharge pipe 6 is sealed, and the lower end of the discharge pipe 6 is provided with an integrally formed discharge port 61, which is located below the movable frame 1. The lower end of each hopper 2 passes through the fixed frame 4 and the conveying pipe 5 in sequence, and the hopper 2 and the conveying pipe 5 are connected.

[0022] In this embodiment, by setting a feeding mechanism inside the fixed frame 4, when the feeding pipe 3 transports the auxiliary material into the hopper 2, the motor 7 is started under the action of the feeding mechanism. At this time, the screw rod 51 set in the conveying pipe 5 starts to rotate, thereby transporting the auxiliary material falling into the conveying pipe 5 from the hopper 2 to the discharge pipe 6. The discharge port 61 at the lower end of the discharge pipe 6 can transport the auxiliary material to the feed port of the extruder.

[0023] Specifically, the positioning mechanism includes fixed platforms 21 fixedly installed on both sides of the upper end of the hopper 2. A fixed clamp 23 is fixedly installed on the upper end of one fixed platform 21, and a movable clamp 22 is provided on the inner side of the other fixed platform 21. The material conveying pipe 3 is located between the fixed clamp 23 and the movable clamp 22. A positioning plate 221 is fixedly installed on the side surface of the movable clamp 22. An integrally formed square slot 222 is provided on the upper end of the fixed platform 21, and the positioning plate 221 is movably inserted into the inside of the square slot 222. A fixed plate 26 is fixedly installed on one side of the fixed clamp 23. A lead screw 24 is rotatably installed on the outer side of the fixed plate 26. The end of the lead screw 24 is rotatably connected to the fixed plate 26 through a rotating shaft. A connector 25 is screwed onto the outer surface of the lead screw 24. One end of the connector 25 is fixedly connected to the side surface of the movable clamp 22.

[0024] In this embodiment, a locking mechanism is provided at the upper end of the hopper 2. Under the action of the locking mechanism, when the conveying pipe 3 needs to convey auxiliary materials, the conveying pipe 3 is placed between the movable clamp 22 and the fixed clamp 23. Then, the screw 24 is rotated. As the screw 24 rotates, the connecting piece 25 begins to move, which in turn drives the movable clamp 22 to move. When the movable clamp 22 fully clamps and stabilizes the conveying pipe 3, the screw 24 is stopped. The positioning plate 221 and the square slot 222 provided on the rear side of the movable clamp 22 cooperate to guide the movement of the movable clamp 22, ensuring its stable movement and preventing it from shifting during movement. Under the clamping action of the movable clamp 22 and the fixed clamp 23, the conveying pipe 3 can stably convey auxiliary materials, preventing instability during the conveying process and ensuring that the conveyed auxiliary materials do not reach the interior of the hopper 2. This increases the stability of the overall device during use.

[0025] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An automatic material conveying device for a twin-screw extruder, comprising a movable frame (1), characterized in that: Two fixed frames (4) are fixedly installed on the upper surface of the mobile frame (1) in an axisymmetric distribution. A material conveying mechanism is provided on the inner side of the two fixed frames (4). A hopper (2) is provided directly above each fixed frame (4). A material conveying pipe (3) is provided at the top of the hopper (2). A locking mechanism for fixing the material conveying pipe (3) is provided on the outer side of the upper end of the hopper (2). Slide rails (8) are provided on both sides of the lower end of the mobile frame (1). The support legs of the mobile frame (1) are slidably installed inside the slide rails (8).

2. The automatic auxiliary material conveying device for a twin-screw extruder according to claim 1, characterized in that: The material conveying mechanism includes a conveying pipe (5) fixedly installed inside the fixed frame (4), a screw rod (51) is rotatably installed inside the conveying pipe (5), a motor (7) is fixedly installed on the outer side of one end of the conveying pipe (5), and the output shaft of the motor (7) is fixedly connected to one end of the screw rod (51).

3. The automatic auxiliary material conveying device for a twin-screw extruder according to claim 2, characterized in that: A discharge pipe (6) is provided between the ends of the two conveying pipes (5). The discharge pipe (6) is fitted into the middle position inside the movable frame (1), and both conveying pipes (5) are connected to the inside of the discharge pipe (6). The upper end of the discharge pipe (6) is sealed, and an integrally formed discharge port (61) is provided at the lower end. The discharge port (61) is located below the movable frame (1).

4. The automatic auxiliary material conveying device for a twin-screw extruder according to claim 3, characterized in that: The lower end of each hopper (2) is sequentially penetrated by a fixing frame (4) and a conveying pipe (5), and the hopper (2) and the conveying pipe (5) are connected.

5. The automatic auxiliary material conveying device for a twin-screw extruder according to claim 1, characterized in that: The positioning mechanism includes fixed platforms (21) fixedly installed on both sides of the upper end of the hopper (2). A fixed clamp (23) is fixedly installed on the upper end of one of the fixed platforms (21), and a movable clamp (22) is provided on the inner side of the other fixed platform (21). The material conveying pipe (3) is located between the fixed clamp (23) and the movable clamp (22). A positioning plate (221) is fixedly installed on the side surface of the movable clamp (22). An integrally formed square slot (222) is provided on the upper end of the fixed platform (21), and the positioning plate (221) is movably inserted into the inside of the square slot (222).

6. The automatic auxiliary material conveying device for a twin-screw extruder according to claim 5, characterized in that: A fixing plate (26) is fixedly installed on one side of the fixing clamp (23). A lead screw (24) is rotatably provided on the outer side of the fixing plate (26). The end of the lead screw (24) is rotatably connected to the fixing plate (26) through a rotating shaft. A connector (25) is screwed onto the outer surface of the lead screw (24). One end of the connector (25) is fixedly connected to the side surface of the movable clamp (22).

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