Screw transmission mechanism of double-screw extruder

Abstract

The utility model discloses a double-screw extruder screw transmission mechanism which comprises an extruder base, the top of the extruder base is fixedly connected with a shell, one side of the shell is rotatably connected with two extrusion screws, one end of each extrusion screw extends into the shell and is fixedly connected with a driven gear, and the other end of each extrusion screw extends into the shell. A driving gear is connected between the two driven gears in a meshed mode, a power assembly is arranged on the outer side of the shell and used for driving the two extrusion screws to rotate at the same time, and a lubricating assembly is arranged at the top of the shell. According to the utility model, the power assembly is connected with the transmission mechanism, and the transmission structure of the double-screw extruder is reinforced by utilizing the special adjustability of the worm gear and the worm, so that the double-screw extruder can be accurately adjusted and controlled according to actual requirements in the use process, the extrusion speed and torque are accurately controlled, and the production efficiency is improved. Therefore, the double-screw extruder is more convenient to use in daily work, and the use efficiency of the double-screw extruder is further improved.

Description

Technical Field

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

[0002] Twin-screw extruder is a kind of equipment used for material processing. It can efficiently extrude raw materials and form them into the desired shape. 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. Twin-screw extruder consists of several parts such as transmission mechanism, feeding device, barrel and screw.

[0003] Traditional twin-screw extruders usually use motors to directly act on the screws for transmission. Although this method can provide power support for the twin-screw extruder, it cannot be accurately adjusted according to actual usage conditions and cannot meet the process requirements of accurately controlling the extrusion speed and torque. Therefore, the twin-screw extruder has certain limitations during use. At the same time, it is difficult to apply lubricating oil during use, resulting in the screw rotating not smoothly, reducing the working efficiency of the entire twin-screw extruder. Utility Model Content

[0004] The utility model aims to provide a screw transmission mechanism for a twin-screw extruder to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a twin-screw extruder screw transmission mechanism, comprising an extruder base, the top of the extruder base is fixedly connected to a shell, one side of the shell is rotatably connected to two extrusion screws, one end of the two extrusion screws extends to the interior of the shell and is fixedly connected to a driven gear, a driving gear is meshed and connected between the two driven gears, a power assembly is arranged on the outside of the shell, the power assembly is used to drive the two extrusion screws to rotate simultaneously, a lubrication assembly is arranged on the top of the shell, one end of the lubrication assembly extends to the interior of the shell and is fixedly connected to an oil injection port.

[0006] As a further preferred embodiment of the present technical solution, the power assembly includes a mounting plate, the mounting plate is fixedly connected to one side of the shell, the bottom of the mounting plate is rotatably connected to a worm, one side of the shell is rotatably connected to a worm wheel, the tooth edge of the worm wheel is meshed with the outer side of the worm, one end of the worm wheel extends to the interior of the shell and is fixedly connected to a rotating shaft, and the outer side of the rotating shaft is fixedly connected to the driving gear.

[0007] As a further preferred embodiment of the present technical solution, the lubrication assembly includes an oiling box, a pushing piston is provided on one side of the oiling box, an output end of the oiling box is fixedly connected to a connecting pipe, one end of the connecting pipe extends to the interior of the shell and is fixedly connected to the oil injection port.

[0008] As a further preferred embodiment of the present technical solution, a power motor is fixedly mounted on the top of the mounting plate, and an output end of the power motor passes through the mounting plate and is fixedly connected to the worm.

[0009] As a further preferred embodiment of the present technical solution, an oil inlet is fixedly connected to the top of the oiling box.

[0010] As a further preferred embodiment of the present technical solution, the oil injection port is located above the driving gear.

[0011] The utility model provides a screw transmission mechanism for a twin-screw extruder, which has the following beneficial effects:

[0012] (1) The utility model connects the power assembly with the transmission mechanism and utilizes the unique adjustability of the worm gear to strengthen the transmission structure of the twin-screw extruder. This design enables the twin-screw extruder to be precisely adjusted according to actual needs during use, thereby achieving precise control of the extrusion speed and torque, making the twin-screw extruder more convenient to use in daily work and further improving its use efficiency.

[0013] (2) The utility model introduces lubricating oil into the housing through the lubricating assembly and acts between the gears, which facilitates the addition of lubricating oil to the transmission mechanism during use, making the operation of the twin-screw extruder smoother. This design improves the use efficiency of the twin-screw extruder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of a top view and cross-section structure of the utility model;

[0016] Figure 3 It is a schematic diagram of a half-section structure of the utility model;

[0017] Figure 4 For the utility model Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0018] In the figure: 1. Extruder base; 2. Shell; 3. Extrusion screw; 4. Oiling box; 5. Oil inlet; 6. Push piston; 7. Connecting pipe; 8. Mounting plate; 9. Power motor; 10. Worm gear; 11. Worm; 12. Oil injection port; 13. Driven gear; 14. Driving gear; 15. Rotating shaft. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] The utility model provides a technical solution: Figure 1-Figure 4 As shown, in this embodiment, a twin-screw extruder screw transmission mechanism includes an extruder base 1, a shell 2 is fixedly connected to the top of the extruder base 1, two extrusion screws 3 are rotatably connected to one side of the shell 2, one end of the two extrusion screws 3 extends to the interior of the shell 2 and is fixedly connected to a driven gear 13, a driving gear 14 is meshed and connected between the two driven gears 13, a power assembly is arranged on the outside of the shell 2, the power assembly is used to drive the two extrusion screws 3 to rotate simultaneously, a lubrication assembly is arranged on the top of the shell 2, one end of the lubrication assembly extends to the interior of the shell 2 and is fixedly connected to an oil injection port 12, and the oil injection port 12 is located above the driving gear 14.

[0021] During the operation of the twin-screw extruder, the power component drives the two driven gears 13 to rotate inside the housing 2 through the driving gear 14, so that the two extrusion screws 3 connected to the two driven gears 13 rotate on the outside of the housing 2, thereby extruding the raw materials. When adding lubricating oil, the operator manually adjusts the lubrication component so that the lubricating oil sprays out from the oil injection port 12 and covers the teeth of the driving gear 14. The lubricating oil is applied after the teeth of the driving gear 14 and the driven gear 13 are in contact. In summary, the power component enables the twin-screw extruder to be precisely controlled according to actual needs, and the use of the lubrication component facilitates the application process of the lubricating oil. These improvements improve the smoothness of the transmission mechanism during operation and further enhance the convenience of the twin-screw extruder.

[0022] like Figure 1-Figure 4 As shown, the power assembly includes a mounting plate 8, which is fixedly connected to one side of the housing 2. A worm 11 is rotatably connected to the bottom of the mounting plate 8, and a worm wheel 10 is rotatably connected to one side of the housing 2. The tooth edge of the worm wheel 10 meshes with the outer side of the worm 11. One end of the worm wheel 10 extends to the interior of the housing 2 and is fixedly connected to a rotating shaft 15. The outer side of the rotating shaft 15 is fixedly connected to a driving gear 14. A power motor 9 is fixedly installed on the top of the mounting plate 8. The output end of the power motor 9 passes through the mounting plate 8 and is fixedly connected to the worm 11.

[0023] The worm 11 is driven by the power motor 9 to rotate at the bottom of the mounting plate 8, so that the worm wheel 10 meshing therewith drives the rotating shaft 15 to rotate between the inner walls of the housing 2, thereby facilitating the two driven gears 13 to rotate simultaneously through the driving gear 14, so that the twin-screw extruder can be accurately adjusted according to actual needs during use, which is convenient for use.

[0024] like Figure 1-Figure 4 As shown, the lubrication assembly includes an oiling box 4, a pushing piston 6 is provided on one side of the oiling box 4, a connecting pipe 7 is fixedly connected to the output end of the oiling box 4, one end of the connecting pipe 7 extends to the interior of the shell 2 and is fixedly connected to the oil injection port 12, and an oil inlet 5 is fixedly connected to the top of the oiling box 4.

[0025] The lubricating oil is introduced into the oiling box 4 through the oil inlet 5, and then the lubricating oil inside the oiling box 4 is sprayed out from the oil spraying port 12 through the connecting pipe 7 by pushing the piston 6, and covers the teeth between the driving gear 14, so as to facilitate the addition of lubricating oil to the transmission mechanism.

[0026] The utility model provides a screw transmission mechanism for a twin-screw extruder, and the specific working principle is as follows: during the operation of the twin-screw extruder, a power motor 9 drives a worm 11 to rotate at the bottom of a mounting plate 8, so that a worm wheel 10 meshing with the worm 11 drives a rotating shaft 15 to rotate between the inner walls of a housing 2, and then a driving gear 14 drives two driven gears 13 and two extrusion screws 3 outside the housing 2 to rotate simultaneously, so as to realize the extrusion of raw materials. When adding lubricating oil, the lubricating oil is introduced into an oiling box 4 through an oil inlet 5, and then the lubricating oil inside the oiling box 4 is sprayed out from an oil spray port 12 through a connecting pipe 7 by pushing a piston 6 and covers the teeth between the driving gear 14, and the lubricating oil is applied after the teeth between the driving gear 14 and the driven gear 13 are in contact.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A twin-screw extruder screw transmission mechanism, comprising an extruder base (1), characterized in that: The top of the extruder base (1) is fixedly connected to a shell (2), one side of the shell (2) is rotatably connected to two extrusion screws (3), one end of each of the two extrusion screws (3) extends into the interior of the shell (2) and is fixedly connected to a driven gear (13), a driving gear (14) is meshingly connected between the two driven gears (13), a power assembly is arranged on the outside of the shell (2), the power assembly is used to drive the two extrusion screws (3) to rotate simultaneously, and a lubrication assembly is arranged on the top of the shell (2), one end of the lubrication assembly extends into the interior of the shell (2) and is fixedly connected to an oil injection port (12).

2. A twin-screw extruder screw transmission mechanism according to claim 1, characterized in that: The power assembly comprises a mounting plate (8), wherein the mounting plate (8) is fixedly connected to one side of a housing (2), a worm (11) is rotatably connected to the bottom of the mounting plate (8), a worm wheel (10) is rotatably connected to one side of the housing (2), a tooth edge of the worm wheel (10) is meshed with the outer side of the worm wheel (11), one end of the worm wheel (10) extends into the interior of the housing (2) and is fixedly connected to a rotating shaft (15), and the outer side of the rotating shaft (15) is fixedly connected to a driving gear (14).

3. A twin-screw extruder screw transmission mechanism according to claim 1, characterized in that: The lubrication assembly comprises an oiling box (4), one side of which is provided with a pushing piston (6), an output end of the oiling box (4) is fixedly connected to a connecting pipe (7), one end of the connecting pipe (7) extends to the interior of the housing (2) and is fixedly connected to an oil injection port (12).

4. A twin-screw extruder screw transmission mechanism according to claim 2, characterized in that: A power motor (9) is fixedly mounted on the top of the mounting plate (8), and an output end of the power motor (9) passes through the mounting plate (8) and is fixedly connected to the worm (11).

5. The screw transmission mechanism of a twin-screw extruder according to claim 3, characterized in that: The top of the oiling box (4) is fixedly connected with an oil inlet (5).

6. The screw transmission mechanism of a twin-screw extruder according to claim 1, characterized in that: The oil injection port (12) is located above the driving gear (14).

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