Feeding device of extruder

Abstract

The utility model relates to the technical field of extruders, in particular to a feeding device of an extruder, which comprises a screw feeder mounted at a feeding port of the extruder in a communicated manner, a discharge port of the screw feeder is communicated with the feeding port of the extruder, a hopper is mounted at a feeding port of the screw feeder in a communicated manner, the feeding device comprises a downward pressing mechanism, and the downward pressing mechanism is connected with the screw feeder. The downward pressing mechanism comprises a rotating shaft which is horizontally arranged in the hopper and can rotate, at least one pressing plate is installed on the peripheral side of the rotating shaft, the included angle between the pressing plate and the horizontal plane is a when the pressing plate operates to the lowest point, and a is larger than 0 and smaller than or equal to 45 degrees. The pressing plate of the device has an inclined angle a which is larger than 0 and smaller than or equal to 45 degrees, and when the pressing plate rotates, downward extrusion force can be generated on materials, so that powder raw materials are promoted to move into the screw feeder, and the feeding amount and the feeding speed are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to an extruder feeding device. Background Art

[0002] The extruder feeding device is an important part of the extruder. It is responsible for continuously feeding the raw materials into the extruder. The feeding device generally includes a screw conveyor. The feed port of the screw conveyor has a hopper and the discharge port is connected to the extruder feeding port. When working, the raw materials are poured into the hopper. Under the action of gravity, the raw materials enter the screw conveyor and continuously feed the extruder through the screw conveyor.

[0003] The raw materials used in the extruder are usually in the form of plastic granules or plastic powder. For plastic powder raw materials, since the particles are very small and the powder particles are relatively light, the efficiency of the powder raw materials entering the material conveyor is relatively low, which affects the feeding speed. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the raw material particles of the extruder are very small and light in weight, which affects the feeding speed, and proposes an extruder feeding device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An extruder feeding device comprises a screw feeder connected and installed at a feeding port of the extruder, wherein the discharge port of the screw feeder is connected to the feeding port of the extruder, and the feed port of the screw feeder is connected and installed with a hopper, and the feeding device comprises a pressing mechanism, wherein the pressing mechanism comprises a rotating shaft horizontally arranged and rotatable in the hopper, and at least one pressing plate is installed on the circumference of the rotating shaft, and the angle between the pressing plate and the horizontal plane when the pressing plate runs to the lowest point is a, wherein 0<a≤45°.

[0007] A rotating motor is fixedly installed outside the hopper, and a power output shaft of the rotating motor is drivingly connected to the rotating shaft.

[0008] The pressing plate is mounted on the rotating shaft through an adjustable support mechanism, and the adjustable support mechanism can adjust the working angle of a.

[0009] The adjusting and supporting mechanism includes a first support rod and a second support rod fixedly connected to the rotating shaft. The first support rod and the second support rod are arranged at intervals along the axis direction of the rotating shaft. A polygonal hole is formed at the end of the first support rod along the axis direction of the rotating shaft, and a circular hole is formed at the end of the second support rod along the axis direction of the rotating shaft. A first bracket and a second bracket are fixedly connected to the back of the pressing plate. A polygonal insertion rod that can be inserted into the polygonal hole in cooperation is fixedly connected to the first bracket along the axis direction of the rotating shaft. A threaded rod that can penetrate the circular hole is fixedly connected to the second bracket along the axis direction of the rotating shaft, and one end of the threaded rod penetrating the circular hole is locked by a nut.

[0010] For the feeding device of an extruder proposed by the present utility model, the beneficial effects are as follows: The pressing plate of this device has an inclination angle, and the included angle 0 < a ≤ 45°. When the pressing plate rotates, it will generate a downward extrusion force on the material, prompting the powder raw material to move into the screw feeder, thereby increasing the feeding amount and feeding speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural view of the present utility model;

[0012] Figure 2 is a three-dimensional structural view of the pressing-down mechanism of the present utility model;

[0013] Figure 3 is a front view structural view of the working state of the pressing-down mechanism of the present utility model.

[0014] In the figure: extruder 1, screw feeder 2, feed inlet 4, discharge outlet 5, hopper 6, rotating motor 7, first support rod 8, polygonal insertion rod 9, pressing plate 10, threaded rod 11, rotating shaft 12, second support rod 13, first bracket 14, polygonal hole 15, second bracket 16, circular hole 17, nut 18. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] 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.

[0016] Referring to Figures 1-3 , a feeding device for an extruder includes a screw feeder 2 connected and installed at the feeding port of the extruder 1. The discharge port 5 of the screw feeder 2 is connected to the feeding port of the extruder 1, and the feeding port 4 of the screw feeder 2 is connected and installed with a hopper 6. The feeding device includes a pressing-down mechanism. The pressing-down mechanism includes a rotating shaft 12 horizontally arranged and capable of rotating in the hopper 6. At least one pressing plate 10 is installed on the circumferential side of the rotating shaft 12. When the pressing plate 10 rotates to the lowest point, the included angle with the horizontal plane is a, where 0 < a ≤ 45°.

[0017] When the device is working, the powder raw material is loaded into the hopper 6, the screw feeder 2 and the pressing mechanism are started, and the pressing plate 10 is driven to rotate through the rotating shaft 12. Figure 3 The pressing plate 10 of the device has an inclined angle, and the angle 0<a≤45°. When the pressing plate 10 rotates, it will produce a downward squeezing force on the material, prompting the powder raw material to move into the screw feeder 2, thereby increasing the feeding amount and feeding speed.

[0018] As a movement mode of the rotating shaft 12, a rotating motor 7 is fixedly installed on the outside of the hopper 6, and the power output shaft of the rotating motor 7 is transmission-connected to the rotating shaft 12, for example, through a coupling or a gearbox, and the rotating motor 7 drives the rotating shaft 12 to rotate.

[0019] The pressing plate 10 is installed on the rotating shaft 12 by adjusting the supporting mechanism. The adjusting supporting mechanism can adjust the working angle of a. Within a certain range, different angles a will produce different pressing thrusts. Different angles a are set according to specific working conditions.

[0020] refer to Figure 2 The adjusting support mechanism includes a first support rod 8 and a second support rod 13 fixed on the rotating shaft 12. The first support rod 8 and the second support rod 13 are arranged at intervals along the axial direction of the rotating shaft 12. A polygonal hole 15 is opened at the end of the first support rod 8 along the axial direction of the rotating shaft 12, and a circular hole 17 is opened at the end of the second support rod 13 along the axial direction of the rotating shaft 12. A first bracket 14 and a second bracket 16 are fixed to the back of the pressing plate 10. The first bracket 14 is fixed with a polygonal insertion rod 9 that can be inserted into the polygonal hole 15 along the axial direction of the rotating shaft 12. The second bracket 16 is fixed with a threaded rod 11 that can pass through the circular hole 17 along the axial direction of the rotating shaft 12. One end of the threaded rod 11 passing through the circular hole 17 is locked by a nut 18.

[0021] The device is provided with at least one polygonal plug rod 9 and at least one threaded rod 11. During installation, the threaded rod 11 is passed through the round hole 17 and is locked by the nut 18, and the polygonal plug rod 9 is inserted into the polygonal hole 15 at the same time. In this way, the locking of the pressure plate 10 is achieved through the round hole 17 and the nut 18, and the positioning of the angle of the pressure plate 10 is achieved through the cooperation of the polygonal plug rod 9 and the polygonal hole 15. The structural angle is convenient for angle adjustment and has good stability.

[0022] As an implementation manner, the polygon may be a hexagon, a heptagon, an octagon, etc. in radial cross section.

[0023] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes to obtain technical solutions, concepts, and designs, which should all be covered within the protection scope of the present utility model.

Claims

1. An extruder feeding device, comprising a screw feeder (2) connected to a feeding port of an extruder (1), a discharge port (5) of the screw feeder (2) connected to the feeding port of the extruder (1), and a feed port (4) of the screw feeder (2) connected to a hopper (6), characterized in that: The feeding device comprises a pressing mechanism, wherein the pressing mechanism comprises a rotating shaft (12) which is horizontally arranged and rotatable in the hopper (6), and at least one pressing plate (10) is installed on the circumference of the rotating shaft (12). When the pressing plate (10) runs to the lowest point, the angle between the pressing plate (10) and the horizontal plane is a, wherein 0<a≤45°.

2. An extruder feeding device according to claim 1, characterized in that: A rotating motor (7) is fixedly mounted on the outside of the hopper (6), and a power output shaft of the rotating motor (7) is drivingly connected to a rotating shaft (12).

3. An extruder feeding device according to claim 1, characterized in that: The pressing plate (10) is mounted on the rotating shaft (12) via an adjustable support mechanism, and the adjustable support mechanism is capable of adjusting a working angle.

4. An extruder feeding device according to claim 3, characterized in that: The adjustment support mechanism comprises a first support rod (8) and a second support rod (13) fixedly connected to the rotating shaft (12); the first support rod (8) and the second support rod (13) are arranged at intervals along the axial direction of the rotating shaft (12); a polygonal hole (15) is opened at the end of the first support rod (8) along the axial direction of the rotating shaft (12); a circular hole (17) is opened at the end of the second support rod (13) along the axial direction of the rotating shaft (12); a first bracket (14) and a second bracket (16) are fixedly connected to the back of the pressure plate (10); the first bracket (14) is fixedly connected to a polygonal insertion rod (9) capable of being inserted into the polygonal hole (15) along the axial direction of the rotating shaft (12); the second bracket (16) is fixedly connected to a threaded rod (11) capable of passing through the circular hole (17) along the axial direction of the rotating shaft (12); one end of the threaded rod (11) passing through the circular hole (17) is locked by a nut (18).

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