Twin-screw extruder for processing plastic particles

Abstract

The utility model discloses a twin-screw extruder for processing plastic particles, which comprises a working frame, a driving box is arranged at the top of the working frame, one side of the driving box is connected with a conveying cylinder, a heating box fixedly communicated with the conveying cylinder is fixedly mounted at the top of the working frame, one side of the heating box is connected with an extrusion die, and the other side of the heating box is connected with a screw rod. A protection frame is fixedly connected to the top of the working frame and located on the outer surface of the heating box, an adjusting mechanism is fixedly connected to one side of the protection frame and located on the outer surface of the extrusion die, and a cutting mechanism for conducting centered cutting on extruded materials is fixedly connected to one end of the adjusting mechanism. Plastic particles extruded by the extrusion die can be centered and cut by the cutting mechanism, so that the plastic particles which are not completely cured can be prevented from being adhered during cutting, and the extruded plastic particles can be cut in different sizes by the adjusting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic particle processing, in particular to a twin-screw extruder for plastic particle processing. Background Art

[0002] Plastic particles generally refer to plastic granules. Plastic granules refer to granular plastics, which are generally divided into more than 200 types and subdivided into thousands of types. Common plastic granules include general-purpose plastics, engineering plastics, and special plastics.

[0003] When producing plastic particles, an extruder is usually required for extrusion molding. When the extruder is in use, the molded plastic particles need to be cut. In existing equipment, when cutting plastic particles, only a set of single pieces are usually used for unidirectional cutting. Such a cutting method can easily cause uncured plastic particles to stick together. For this reason, we propose a twin-screw extruder for plastic particle processing. Utility Model Content

[0004] The utility model aims to provide a twin-screw extruder for processing plastic particles to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a twin-screw extruder for processing plastic particles, comprising a working frame, a driving box is arranged on the top of the working frame, a conveying cylinder is connected to one side of the driving box, a heating box fixedly installed on the top of the working frame and fixedly connected to the conveying cylinder, an extrusion die is connected to one side of the heating box, a feed bin is penetrated through the top of the conveying cylinder, a protective frame is fixedly connected to the top of the working frame and the outer surface of the heating box, an adjusting mechanism is fixedly connected to one side of the protective frame and the outer surface of the extrusion die, and a cutting mechanism for centering the extruded material is fixedly connected to one end of the adjusting mechanism.

[0006] Furthermore, the cutting mechanism includes a cutting frame, a guide rail, a slider, a first mounting plate, a second mounting plate and a first motor, the inner wall of the cutting frame is fixedly connected with two groups of guide rails, the outer surface of the guide rail is slidably connected with a slider, the slider is fixedly connected with a first mounting plate, the opposite sides of the two groups of the first mounting plates are fixedly connected with cutting knives, one side of the cutting frame is fixedly connected with a second mounting plate, one side of the second mounting plate is fixedly mounted with a first motor, the output end of the first motor is fixedly connected with a driving rod, one side of the driving rod is rotatably connected with a pull rod through two groups of first positioning shafts, one side of the first mounting plate is fixedly connected with a second positioning shaft, and the side of the pull rod away from the driving rod is rotatably connected with the second positioning shaft.

[0007] Furthermore, the adjustment mechanism includes a hollow tube, a telescopic rod and a locking bolt. The hollow tube is arranged in multiple groups and fixedly installed on one side of the protective frame. The telescopic rod is slidably connected inside the hollow tube. A locking bolt is arranged on one side of the hollow tube. One end of the locking bolt passes through one side of the hollow tube and contacts with the telescopic rod.

[0008] Furthermore, the cross section of the telescopic rod is set to be rectangular, and a spring is fixedly connected to the outer surface of the first mounting plate and located on the guide rail, and the side of the spring away from the first mounting plate is fixedly connected to the cutting frame.

[0009] Furthermore, a first support frame is fixedly connected to the top of the hollow tube, a second motor is fixedly installed inside the first support frame, a fan blade is fixedly connected to the output end of the second motor, and a filter is arranged on the top of the first support frame.

[0010] Furthermore, a second support frame is fixedly connected to one side of the cutting frame, and a support ring is fixedly connected to the top of the second support frame at a position corresponding to the extrusion die.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model can prevent the heating box from causing burns to the staff by setting a protective frame, and the cutting mechanism can perform center cutting on the plastic particles extruded by the extrusion die, thereby preventing the incompletely solidified plastic particles from sticking together during cutting, and the adjusting mechanism can cut the extruded plastic particles into different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the connection structure of the first stereogram of the adjusting mechanism and the cutting mechanism of the utility model;

[0014] Figure 3 It is a schematic diagram of the second stereoscopic connection structure of the adjusting mechanism and the cutting mechanism of the utility model.

[0015] In the figure: 1 working frame, 2 driving box, 3 conveying cylinder, 4 heating box, 5 feeding bin, 6 extrusion die, 7 protection frame, 8 adjustment mechanism, 9 cutting mechanism, 10 cutting frame, 11 guide rail, 12 slider, 13 first mounting plate, 14 second mounting plate, 15 first motor, 16 driving rod, 17 first positioning shaft, 18 pull rod, 19 second positioning shaft, 20 hollow tube, 21 telescopic rod, 22 locking bolt, 23 first support frame, 24 second motor, 25 fan blade, 26 filter screen, 27 spring, 28 cutting knife, 29 second support frame, 30 support ring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-Figure 3 The utility model provides a technical solution: a twin-screw extruder for processing plastic particles, comprising a working frame 1, a driving box 2 is arranged on the top of the working frame 1, a conveying cylinder 3 is connected to one side of the driving box 2, a heating box 4 fixedly installed on the top of the working frame 1 and connected to the conveying cylinder 3, an extrusion die 6 is connected to one side of the heating box 4, a feeding bin 5 is penetrated through the top of the conveying cylinder 3, a protective frame 7 is fixedly connected to the top of the working frame 1 and located on the outer surface of the heating box 4, an adjusting mechanism 8 is fixedly connected to one side of the protective frame 7 and located on the outer surface of the extrusion die 6, and a cutting mechanism 9 for centering the extruded material is fixedly connected to one end of the adjusting mechanism 8.

[0018] Among them, the protection frame 7 can prevent the heating box 4 from causing harm to the staff, and the cutting mechanism 9 can cut the plastic particles extruded by the extrusion mold 6 in the center, thereby preventing the incompletely solidified plastic particles from sticking together during cutting, and the adjustment mechanism 8 can cut the extruded plastic particles into different sizes.

[0019] See also Figure 2 and Figure 3 A first support frame 23 is fixedly connected to the top of the hollow tube 20, a second motor 24 is fixedly installed inside the first support frame 23, a fan blade 25 is fixedly connected to the output end of the second motor 24, a filter screen 26 is arranged on the top of the first support frame 23, a second support frame 29 is fixedly connected to one side of the cutting frame 10, and a support ring 30 is fixedly connected to the top of the second support frame 29 and at the position corresponding to the extrusion die 6.

[0020] Among them, when the linear plastic particles are extruded from the extrusion die 6, the second motor 24 is started to operate, and the second motor 24 can drive the fan blades 25 to rotate, so that the extruded linear plastic can be quickly solidified, and then the plastic particles are pulled to the top of the support ring 30. Then, as the plastic particles are continuously extruded, they can be cut by the cutting mechanism 9.

[0021] See also Figure 1 , Figure 2 and Figure 3The cutting mechanism 9 includes a cutting frame 10, a guide rail 11, a slider 12, a first mounting plate 13, a second mounting plate 14 and a first motor 15. The inner wall of the cutting frame 10 is fixedly connected with two groups of guide rails 11, and the outer surface of the guide rail 11 is slidably connected with the slider 12. The first mounting plate 13 is fixedly connected to the slider 12. The opposite sides of the two groups of the first mounting plates 13 are fixedly connected with cutting knives 28. One side of the cutting frame 10 is fixedly connected with the second mounting plate 14, and one side of the second mounting plate 14 is fixedly installed with a first motor 15. The output end of the first motor 15 is fixedly connected with a driving rod 16, and one side of the driving rod 16 is rotatably connected with a pull rod 18 through two groups of first positioning shafts 17. One side of the first mounting plate 13 is fixedly connected with a second positioning shaft 19, and the side of the pull rod 18 away from the driving rod 16 is rotatably connected with the second positioning shaft 19.

[0022] Among them, when the plastic particles pass through the two sets of cutting knives 28, the first motor 15 is started to rotate, and the first motor 15 can drive the driving rod 16 to rotate, and then the driving rod 16 can push the two sets of pull rods 18 to rotate, and then the slider 12, the first mounting plate 13 and the cutting knife 28 can be moved along the guide rail 11, so that the plastic particles can be cut in the center.

[0023] See also Figure 1 , Figure 2 and Figure 3 The adjustment mechanism 8 includes a hollow tube 20, a telescopic rod 21 and a locking bolt 22. The hollow tube 20 is arranged in multiple groups and fixedly installed on one side of the protection frame 7. The interior of the hollow tube 20 is slidably connected with the telescopic rod 21. A locking bolt 22 is arranged on one side of the hollow tube 20. One end of the locking bolt 22 passes through one side of the hollow tube 20 and contacts with the telescopic rod 21. The cross-section of the telescopic rod 21 is arranged to be rectangular.

[0024] When the cutting position of the cutting mechanism 9 needs to be adjusted, the locking bolt 22 is unscrewed to move the telescopic rod 21 and the cutting mechanism 9 connected to the telescopic rod 21 along the hollow tube 20, so that the distance between the cutting knife 28 and the extrusion die 6 can be adjusted, so that plastic particles of different sizes can be cut.

[0025] See also Figure 1 and Figure 2 A spring 27 is fixedly connected to the first mounting plate 13 and located on the outer surface of the guide rail 11. The spring 27 is fixedly connected to the cutting frame 10 on the side away from the first mounting plate 13. The spring 27 can reset the slider 12 and the first mounting plate 13 more quickly.

[0026] When in use, firstly, the protection frame 7 is provided to prevent the heating box 4 from causing harm to the staff, and the cutting mechanism 9 provided can perform center cutting on the plastic particles extruded by the extrusion die 6, so as to prevent the incompletely solidified plastic particles from sticking together during cutting, and the adjusting mechanism 8 provided can cut the extruded plastic particles into different sizes. When the linear plastic particles are extruded by the extrusion die 6, the second motor 24 is started to operate, and the second motor 24 can drive the fan blades 25 to rotate, so as to quickly solidify the extruded linear plastic, and then the plastic particles are pulled to the top of the support ring 30, and then as the plastic particles are continuously extruded, they can be cut by the cutting mechanism 9. Cutting, when the plastic particles pass through the two sets of cutting knives 28, start the first motor 15 to rotate, the first motor 15 can drive the driving rod 16 to rotate, and then the driving rod 16 can push the two sets of pull rods 18 to rotate, and then the slider 12, the first mounting plate 13 and the cutting knife 28 can be moved along the guide rail 11, so that the plastic particles can be centered cut, and when the cutting position of the cutting mechanism 9 needs to be adjusted, unscrew the locking bolt 22, so that the telescopic rod 21 and the cutting mechanism 9 connected to the telescopic rod 21 are moved along the hollow tube 20, so that the distance between the cutting knife 28 and the extrusion die 6 can be adjusted, so that plastic particles of different sizes can be cut.

[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 for processing plastic particles, comprising a working frame (1), a driving box (2) is arranged on the top of the working frame (1), a conveying cylinder (3) is connected to one side of the driving box (2), a heating box (4) fixedly installed on the top of the working frame (1) and connected to the conveying cylinder (3), an extrusion die (6) is connected to one side of the heating box (4), and a feeding bin (5) is arranged through the top of the conveying cylinder (3), characterized in that: A protective frame (7) is fixedly connected to the top of the working frame (1) and located on the outer surface of the heating box (4); an adjustment mechanism (8) is fixedly connected to one side of the protective frame (7) and located on the outer surface of the extrusion die (6); and a cutting mechanism (9) for cutting the extruded material in the center is fixedly connected to one end of the adjustment mechanism (8).

2. A twin-screw extruder for processing plastic particles according to claim 1, characterized in that: The cutting mechanism (9) comprises a cutting frame (10), a guide rail (11), a slider (12), a first mounting plate (13), a second mounting plate (14) and a first motor (15); the inner wall of the cutting frame (10) is fixedly connected with two groups of guide rails (11); the outer surface of the guide rail (11) is slidably connected with a slider (12); the slider (12) is fixedly connected with the first mounting plate (13); the opposite sides of the two groups of the first mounting plates (13) are fixedly connected with cutting knives (28); the cutting frame (10) A second mounting plate (14) is fixedly connected to one side of the first mounting plate (14), a first motor (15) is fixedly mounted to one side of the second mounting plate (14), a driving rod (16) is fixedly connected to the output end of the first motor (15), one side of the driving rod (16) is rotatably connected to a pull rod (18) via two sets of first positioning shafts (17), one side of the first mounting plate (13) is fixedly connected to a second positioning shaft (19), and a side of the pull rod (18) away from the driving rod (16) is rotatably connected to the second positioning shaft (19).

3. A twin-screw extruder for processing plastic particles according to claim 2, characterized in that: The adjustment mechanism (8) comprises a hollow tube (20), a telescopic rod (21) and a locking bolt (22); the hollow tube (20) is arranged in multiple groups and fixedly mounted on one side of the protection frame (7); the interior of the hollow tube (20) is slidably connected with the telescopic rod (21); a locking bolt (22) is arranged on one side of the hollow tube (20); one end of the locking bolt (22) passes through one side of the hollow tube (20) and contacts with the telescopic rod (21).

4. A twin-screw extruder for processing plastic particles according to claim 3, characterized in that: The cross section of the telescopic rod (21) is arranged to be rectangular, and a spring (27) is fixedly connected to the outer surface of the guide rail (11) on the first mounting plate (13), and the side of the spring (27) away from the first mounting plate (13) is fixedly connected to the cutting frame (10).

5. A twin-screw extruder for processing plastic particles according to claim 3, characterized in that: A first support frame (23) is fixedly connected to the top of the hollow tube (20), a second motor (24) is fixedly installed inside the first support frame (23), a fan blade (25) is fixedly connected to the output end of the second motor (24), and a filter screen (26) is arranged on the top of the first support frame (23).

6. A twin-screw extruder for processing plastic particles according to claim 3, characterized in that: A second support frame (29) is fixedly connected to one side of the cutting frame (10), and a support ring (30) is fixedly connected to the top of the second support frame (29) at a position corresponding to the extrusion die (6).

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