Feeding mechanism of double-screw extruder

Abstract

The utility model discloses a feeding mechanism of a double-screw extruder, which relates to the technical field of double-screw extruders and comprises a hopper, a feeding mechanism, a feeding mechanism, a feeding mechanism and a discharging mechanism. The connecting part is communicated with the hopper and is arranged at the lower part of the hopper; the movable parts are movably connected to the interior of the hopper so as to relatively close the lower part of the hopper, and first elastic pieces are correspondingly connected between the movable parts and the connecting parts; a connecting part is arranged in the hopper, a material turning mechanism is arranged in the connecting part, an auxiliary mechanism is arranged in the connecting part, and a stirring piece is arranged between the connecting part and the hopper through a transmission mechanism. The material turning mechanism can drive the movable part to conduct regular opening and closing to achieve uniform feeding of raw materials in the hopper, convenience is achieved, the hopper can generate certain vibration under the action of the auxiliary mechanism, and therefore the situation that the raw materials are blocked and stacked is reduced, and feeding is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw extruders, in particular to a feeding mechanism of a twin-screw extruder. Background Art

[0002] The twin-screw extruder is developed on the basis of the single-screw extruder. The twin-screw extruder is mainly composed of several parts such as a transmission device, a feeding device, a barrel and a screw. Due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics, it has been widely used in the molding processing of extruded products. The feeding mechanism is one of the basic components of the twin-screw extruder.

[0003] Referring to the existing patent publication number: CN209063493U, a feeding mechanism of a twin-screw extruder includes a connecting hinge, a spring, a pull rod, an elastic paddle, a connecting frame, a spiral blade, a stirring rod and a stirring motor. The connecting hinge is symmetrically installed on the left and right sides of the inner wall of the feed hopper, the elastic paddle is installed on the lower side of the inside of the feed hopper, the pull rod is installed on the annular side of the feed hopper, the spring sleeve is arranged on the annular side of the pull rod, the stirring motor is assembled on the upper side of the inside of the feed hopper, and a connecting frame is installed on the annular side of the stirring motor. This design solves the problem that the raw materials in the feed hopper of the original twin-screw extruder are easily blocked. The utility model has a reasonable structure, is easy to control the feed amount, prevents blockage, and has a high feeding rate.

[0004] However, in actual use, the existing feeding mechanism needs to frequently and regularly control the opening and closing of the valve because the raw materials are mostly directly accumulated in the storage hopper at one time, and the valve is opened when the raw materials are applied to allow the raw materials in the hopper to be supplied. Moreover, when a large amount of raw materials are accumulated in the hopper, the space at the discharge port is limited, which can easily lead to internal congestion, slow material discharge, and low efficiency. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and propose a feeding mechanism for a twin-screw extruder. The utility model cooperates with the turning mechanism and the movable part, so that the turning mechanism can drive the movable part to open and close regularly to achieve uniform supply of raw materials in the hopper, which is more convenient, and the auxiliary mechanism can make the hopper vibrate to a certain extent, thereby reducing the congestion and accumulation of raw materials and facilitating feeding.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A twin-screw extruder feeding mechanism, comprising:

[0008] The hopper has an inclined lower portion and a storage space inside;

[0009] A connecting part, which is connected to the hopper and installed at the lower part of the hopper;

[0010] The movable parts are movably connected to the inside of the hopper to form a relative closure for the lower part of the hopper, and the first elastic parts are correspondingly connected between the movable parts and the connecting parts;

[0011] A material turning mechanism is installed inside the connecting part, an auxiliary mechanism is installed inside the connecting part, and a stirring member is installed between the connecting part and the hopper via a transmission mechanism.

[0012] The utility model is further configured that the material turning mechanism includes: a motor, a drive shaft and a cam;

[0013] The motor is mounted on the surface of the connection part, the drive shaft is connected to the output end of the motor and passes through the connection part, and the cams are distributed in a ring array and mounted on the surface of the drive shaft.

[0014] The utility model is further configured that the cams are all in contact with the movable part and can drive the movable part to flip.

[0015] The utility model is further configured that the auxiliary mechanism includes: a sleeve, a second elastic member and a knocking member;

[0016] The sleeves are all mounted on the surface of the driving shaft, the second elastic members are all mounted inside the sleeves, and the knocking members are all mounted on one relatively movable end of the second elastic members.

[0017] The utility model is further configured such that the knocking piece fits the inner space of the sleeve, and the knocking piece contacts the connecting portion.

[0018] The utility model is further configured that the transmission mechanism includes: a first bevel gear, a second bevel gear and a rotating member;

[0019] The rotating member is connected to the surface of the hopper, the first bevel gear is installed at one end of the rotating member located outside the hopper, the second bevel gear is meshed with the first bevel gear and is installed at one end of the drive shaft that passes through the outside of the connecting part, and the agitator is installed at one end of the rotating member located inside the hopper.

[0020] The utility model is further configured that a base connected to the twin-screw extruder is installed at the lower part of the connecting part, and the stirring member is located above the movable part.

[0021] The beneficial effects of the utility model are as follows: the utility model cooperates with the turning mechanism and the movable part, so that the turning mechanism can drive the movable part to open and close regularly to achieve uniform supply of raw materials in the hopper, which is more convenient, and under the action of the auxiliary mechanism, the hopper can produce a certain vibration, thereby reducing the congestion and accumulation of raw materials and facilitating feeding.

[0022] The feeding mechanism of the twin-screw extruder is provided with a movable part, a first elastic member, a material turning mechanism and an auxiliary mechanism, so that when the raw material is supplied, a person can start the motor so that the motor can drive the cam to rotate through the driving shaft. During the rotation of the cam, the movable part is pushed upward so that the movable part opens the relatively closed space of the hopper. At this time, the raw material falls from the opening formed between the movable parts. Under the action of the cam, the movable part can be driven to open and close regularly to achieve uniform supply of the raw material in the hopper. It is more convenient, and under the action of the auxiliary mechanism, the hopper can generate a certain vibration, thereby reducing the congestion and accumulation of raw materials and facilitating feeding.

[0023] The feeding mechanism of the twin-screw extruder is provided with a transmission mechanism and a stirring member. When the raw material is supplied, the driving shaft will also drive the second bevel gear to rotate. The second bevel gear can drive the first bevel gear meshing therewith to rotate under the action of the rotating member. The action is transmitted to the position of the stirring member so that the stirring member can also rotate. Therefore, the stirring member can stir the raw materials in the hopper to a certain extent, improve the mixing effect of the raw materials, and reduce the accumulation of raw materials in the hopper during the stirring process, thereby improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a feeding mechanism of a twin-screw extruder proposed by the utility model;

[0025] Figure 2 This is a schematic diagram of the overall front section structure of a feeding mechanism of a twin-screw extruder proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the overall side section structure of a twin-screw extruder feeding mechanism proposed by the utility model;

[0027] Figure 4 A twin-screw extruder feeding mechanism proposed by the utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0028] In the figure: 1, hopper; 2, connecting part; 3, base; 4, motor; 5, first elastic member; 6, driving shaft; 7, cam; 8, movable part; 9, stirring member; 10, rotating member; 11, first bevel gear; 12, second bevel gear; 13, knocking member; 14, sleeve; 15, second elastic member. DETAILED DESCRIPTION

[0029] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0032] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0033] Reference Figure 1-4 A twin-screw extruder feeding mechanism comprises: a hopper 1, the lower part of which is inclined and has a material storage space inside; a connecting part 2, which is connected to the hopper 1 and installed at the lower part of the hopper 1; a movable part 8, which is movably connected to the inside of the hopper 1 to form a relative closure for the lower part of the hopper 1, and a first elastic member 5 is correspondingly connected between the movable part 8 and the connecting part 2, so that when the two movable parts 8 are in the same horizontal position, the lower part of the hopper 1 can be closed to prevent the raw materials from falling randomly, and then when the movable part 8 is rotated and turned, a certain opening can be opened to allow the raw materials to fall; a turning mechanism is installed inside the connecting part 2, and the turning mechanism The structure can drive the movable part 8 to flip, so that the raw materials in the hopper 1 can be supplied regularly and quantitatively, which is more uniform and reduces the frequent operation of personnel. An auxiliary mechanism is installed inside the connecting part 2, which can play an auxiliary role in vibrating the raw materials in the hopper 1, so that the raw materials have a certain mobility and reduce accumulation. A stirring member 9 is installed between the connecting part 2 and the hopper 1 through a transmission mechanism, and the action in the connecting part 2 can be transmitted to the stirring member 9 through the transmission mechanism, so that the stirring member 9 can drive the raw materials in the hopper 1 to be stirred after the activity, so as to improve the mixing effect of the raw materials in the hopper 1.

[0034] Specifically, refer to Figure 2-3The material turning mechanism includes: a motor 4, a drive shaft 6 and a cam 7; the motor 4 is installed on the surface of the connecting part 2, the drive shaft 6 is connected to the output end of the motor 4 and passes through the connecting part 2, and the cams 7 are distributed in a ring array and installed on the surface of the drive shaft 6. Through this implementation, the motor 4 can drive the drive shaft 6 to rotate after working, and the drive shaft 6 will drive the cam 7 to rotate after rotating. The cam 7 can continue to move through the working time of the motor 4.

[0035] Furthermore, the cams 7 are in contact with the movable part 8 and can drive the movable part 8 to flip. In this embodiment, when the cams 7 are continuously rotated, the movable part 8 can be regularly lifted up so that the movable part 8 opens the relatively closed space of the hopper 1. At this time, the raw materials fall from the opening formed between the movable parts 8. Under the action of the cams 7, the movable parts can be driven to open and close regularly to achieve uniform supply of raw materials in the hopper 1, which is more convenient.

[0036] Specifically, refer to Figure 2-4 The auxiliary mechanism includes: a sleeve 14, a second elastic member 15 and a knocking member 13; the sleeves 14 are installed on the surface of the drive shaft 6, the second elastic members 15 are installed inside the sleeve 14, and the knocking members 13 are installed at the relatively movable end of the second elastic member 15. Through this implementation, the drive shaft 6 will also drive the sleeve 14 to move during the rotation process, and the height of the sleeve 14 is less than the height of the cam 7, so that the sleeve 14 can interact with the connecting part 2 and avoid interacting with the movable part 8.

[0037] Furthermore, the knocking piece 13 fits in the internal space of the sleeve 14, and the knocking piece 13 is in contact with the connecting part 2. In the present embodiment, a relative seal is formed between the knocking piece 13 and the sleeve 14, which can effectively prevent the raw material from entering the sleeve 14. When the driving shaft 6 drives the sleeve 14 to rotate, the knocking piece 13 inside it will be thrown outward due to the action of centrifugal force, thereby knocking the connecting part 2 to generate vibration, and the second elastic piece 15 can generate a certain traction force and elastic potential energy on the knocking piece 13, so that the knocking piece 13 can also regularly knock and vibrate the connecting part 2, thereby reducing the congestion and accumulation of raw materials and facilitating feeding.

[0038] Specifically, refer to Figure 3The transmission mechanism includes: a first bevel gear 11, a second bevel gear 12 and a rotating member 10; the rotating member 10 is connected to the surface of the hopper 1, the first bevel gear 11 is installed at the end of the rotating member 10 located outside the hopper 1, the second bevel gear 12 is meshed with the first bevel gear 11 and is installed at the end of the driving shaft 6 that penetrates to the outside of the connecting portion 2, and the agitator 9 is installed at the end of the rotating member 10 located inside the hopper 1. Through this embodiment, the driving shaft 6 will also drive the second bevel gear 12 to rotate, and the second bevel gear 12 can drive the first bevel gear 11 meshed therewith to rotate under the action of the rotating member 10, and the action is transmitted to the position of the agitator 9 so that the agitator 9 can also rotate, so that the raw materials in the hopper 1 can be stirred to a certain extent through the agitator 9, thereby improving the mixing effect of the raw materials and reducing the accumulation of raw materials in the hopper 1 during the stirring process, thereby improving the use effect.

[0039] Specifically, refer to Figure 1-3 A base 3 connected to the twin-screw extruder is installed at the lower part of the connecting part 2. Furthermore, the stirring member 9 is located above the movable part 8. In this embodiment, the stirring member 9 will first stir and mix the raw materials in the hopper 1 to improve the processing effect of the raw materials.

[0040] Working principle: When using the utility model, first connect and install the feeding mechanism with the twin-screw extruder through the base 3, and then add raw materials into the hopper 1, so that when feeding, the motor 4 can be started, and the motor 4 can drive the cam 7 and the sleeve 14 to rotate through the driving shaft 6, and the cam 7 can regularly lift the movable part 8 during the rotation process, so that the movable part 8 opens the relatively closed space of the hopper 1. At this time, the raw materials fall from the opening formed between the movable parts 8. Under the action of the cam 7, the movable part can be driven to open and close regularly to achieve uniform supply of raw materials in the hopper 1, which is more convenient. During the process of driving the sleeve 14 to rotate, the knocking piece 13 inside it will be thrown outward due to the action of centrifugal force, thereby connecting The part 2 is knocked to produce vibration, and the second elastic member 15 can generate a certain traction force and elastic potential energy on the knocking member 13, so that the knocking member 13 can also regularly knock and vibrate the connecting part 2, thereby reducing the congestion and accumulation of raw materials, facilitating feeding, and when the raw materials are supplied, the driving shaft 6 will also drive the second bevel gear 12 to rotate, and the second bevel gear 12 can drive the first bevel gear 11 meshing therewith to rotate under the action of the rotating member 10, and the action is transmitted to the position of the agitator 9 so that the agitator 9 can also rotate, so that the agitator 9 can perform a certain stirring effect on the raw materials in the hopper 1, thereby improving the mixing effect of the raw materials and reducing the accumulation of raw materials in the hopper 1 during the stirring process, thereby improving the use effect.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A twin-screw extruder feeding mechanism, characterized in that: include: A hopper (1), the lower portion of which is arranged in an inclined manner and has a material storage space inside; A connecting portion (2) which is connected to the hopper (1) and is installed at the bottom of the hopper (1); The movable parts (8) are movably connected to the inside of the hopper (1) to form a relative closure for the lower part of the hopper (1), and the first elastic parts (5) are correspondingly connected between the movable parts (8) and the connecting parts (2); A material turning mechanism is installed inside the connecting portion (2), an auxiliary mechanism is installed inside the connecting portion (2), and a stirring member (9) is installed between the connecting portion (2) and the hopper (1) via a transmission mechanism.

2. A twin-screw extruder feeding mechanism according to claim 1, characterized in that: The material turning mechanism comprises: a motor (4), a drive shaft (6) and a cam (7); The motor (4) is mounted on the surface of the connecting portion (2), the drive shaft (6) is connected to the output end of the motor (4) and passes through the connecting portion (2), and the cams (7) are distributed in a ring array and mounted on the surface of the drive shaft (6).

3. A twin-screw extruder feeding mechanism according to claim 2, characterized in that: The cams (7) are in contact with the movable part (8) and can drive the movable part (8) to flip.

4. A twin-screw extruder feeding mechanism according to claim 1, characterized in that: The auxiliary mechanism comprises: a sleeve (14), a second elastic member (15) and a knocking member (13); The sleeves (14) are all mounted on the surface of the drive shaft (6), the second elastic members (15) are all mounted inside the sleeves (14), and the knocking members (13) are all mounted on a relatively movable end of the second elastic member (15).

5. A twin-screw extruder feeding mechanism according to claim 4, characterized in that: The knocking piece (13) fits in the inner space of the sleeve (14), and the knocking piece (13) is in contact with the connecting portion (2).

6. A twin-screw extruder feeding mechanism according to claim 1, characterized in that: The transmission mechanism comprises: a first bevel gear (11), a second bevel gear (12) and a rotating member (10); The rotating member (10) is connected to the surface of the hopper (1), the first bevel gear (11) is mounted on an end of the rotating member (10) located outside the hopper (1), the second bevel gear (12) is meshed with the first bevel gear (11) and is mounted on an end of the drive shaft (6) that passes through the outside of the connecting portion (2), and the stirring member (9) is mounted on an end of the rotating member (10) located inside the hopper (1).

7. A twin-screw extruder feeding mechanism according to claim 1, characterized in that: A base (3) connected to the twin-screw extruder is installed at the lower part of the connecting part (2), and the stirring member (9) is located above the movable part (8).

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