Incongruous rotation type double-screw extrusion equipment for plastic particle processing

Abstract

The utility model relates to the technical field of plastic granule processing, and discloses counter-rotating type double-screw extrusion equipment for plastic granule processing, which comprises a double-screw plastic extruder main body, an extrusion processing die head is arranged at the end part of the double-screw plastic extruder main body, a feed bin is arranged at the front end of the double-screw plastic extruder main body, and an extrusion processing die head is arranged at the rear end of the double-screw plastic extruder main body. The double-screw plastic extruder comprises a double-screw plastic extruder main body, a feeding bin is arranged on the double-screw plastic extruder main body, a feeding hopper is arranged at the top end of the feeding bin, and a blanking uniform mixing assembly used for mixing blanking is arranged above the feeding hopper. Therefore, the problem that large-particle plastic enters the double-screw plastic extruder main body and is difficult to hot melt quickly or causes blanking blockage is solved, and plastic particles with different colors entering the double-screw plastic extruder main body are uniformly mixed and then are fully hot-melted, so that the quality of an extruded product is integrally improved; and the processing and using requirements of users are met.

Description

Technical Field

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

[0002] A counter-rotating twin-screw extruder is a type of equipment commonly used in the plastics processing industry to melt and extrude plastic granules. The counter-rotating twin-screw extruder consists of two screws that rotate in opposite directions to transport plastic granules from the feed port to the discharge port. During this process, the plastic granules are heated, melted and plasticized, and then extruded through the die head of the extruder to form the desired product shape.

[0003] After searching, the authorized Chinese patent announcement number CN 216609975 U discloses a plastic extruder, which relates to the field of plastic product processing technology. It includes an extruder body, the outer surface of the extruder body is provided with a sealing box through a fixed rod cover, the upper surface of the extruder body is provided with a feed pipe near the left edge, the feed pipe is provided with an adjustment mechanism, the upper surface of the feed pipe is fixedly mounted with a storage box, the storage box is provided with a stirring mechanism, the air distribution box is connected to the sealing box through an exhaust mechanism, the lower surface of the sealing box is fixedly mounted with a refrigerator, and the refrigerator is connected to the sealing box through a first conduit. The utility model increases the stirring and drying functions of the extruder body, reduces the moisture content of the raw materials, effectively avoids condensation of the raw materials, makes feeding smoother, and at the same time makes the feeding speed and dosage more accurate, increases the cooling function, accelerates the cooling efficiency of the extruder body, and can replace the head more quickly, thereby improving work efficiency.

[0004] The plastic processing device in the above patent still has certain shortcomings. When the existing twin-screw extruder for plastic pellet processing is actually used, it is sometimes necessary to mix plastic pellets of various colors to prepare products of mixed colors. However, when mixing plastic pellets of various colors, most users adopt the method of pouring them separately and adding the plastic pellet raw materials in sequence for mixing. This mixing method can easily lead to uneven mixing of the plastic pellets, which in turn causes serious color difference in the subsequent hot-melt extruded products, which does not meet the user's production and processing requirements. Utility Model Content

[0005] In response to the deficiencies in the prior art, the utility model provides a counter-rotating twin-screw extruder for processing plastic pellets, which solves the problem that, in actual use, the existing twin-screw extruders for processing plastic pellets sometimes need to mix plastic pellets of different colors to prepare products of mixed colors. However, when mixing plastic pellets of various colors, users mostly adopt a separate pouring method, adding the plastic pellet raw materials in sequence for mixing. This mixing method can easily lead to uneven mixing of the plastic pellets, which in turn causes serious color difference in the subsequent hot-melt extruded products, which does not meet the production and processing requirements of the users.

[0006] The utility model provides the following technical solution: a counter-rotating twin-screw extruder for processing plastic pellets, comprising a twin-screw plastic extruder main body, an extrusion processing die head provided at the end of the twin-screw plastic extruder main body, a feed bin provided at the front end of the feed bin, a feed hopper provided at the top end of the feed bin, and a uniform mixing assembly for mixing and discharging materials provided above the feed hopper;

[0007] The uniform mixing assembly for discharging the materials includes a discharging bin arranged above the feed hopper, the bottom end of the discharging bin is connected to the feed hopper, a discharge hole is opened on the side of the discharging hole, a closing plate is rotatably arranged on the outer side of the discharging hole, a first transmission rod is rotatably arranged in the discharging bin, a plurality of first stirring rods are evenly arranged on the first transmission rod, a second transmission rod is arranged on the side of the first transmission rod, and the ends of the second transmission rod are rotatably connected to the inner wall of the discharging bin, a plurality of second stirring rods are evenly arranged on the second transmission rod, and the second stirring rods are staggered with the first stirring rods, and a side rotating bin is provided on the outer side of the discharging bin, and the ends of the first transmission rod and the second transmission rod are both rotatably passed through the inner wall of the discharging bin and extend to the side rotating bin The transmission gear of the present invention is a gear which is connected to the gear of the said first gear and the gear of the said second gear is connected with the gear of the said first gear and the gear of the said second gear is connected with the gear of the said second gear.

[0008] Preferred technical solution 1: Two collision blocks are symmetrically provided at both ends of the third transmission rod body, and one end of the third transmission rod rotates and passes through the inner wall of the lower hopper.

[0009] Preferred technical solution 2: A fourth pulley is provided at the end of the third transmission rod, and the fourth pulley is connected to the third pulley via a second transmission belt.

[0010] Preferred technical solution three: The four sides of the outer side of the lower hopper are fixedly connected to the top of the feed hopper through support rods.

[0011] This solution can make the lower bin be fixed on the feed hopper more stably.

[0012] Preferred technical solution four: the particle screen is arranged obliquely in the lower hopper, and the inclined bottom of the particle screen extends to the side of the discharge hole.

[0013] This solution can enable large plastic particles filtered by the particle screen to move to the discharge hole for discharge more quickly.

[0014] Preferred technical solution five: the collision and conflict blocks are all semi-disc-shaped, and the side edges of the collision and conflict blocks conflict with the bottom side of the particle screen.

[0015] This solution can enable the third transmission rod to drive the collision block to repeatedly collide with the bottom of the particle screen when it rotates.

[0016] Compared with the prior art, the present invention provides a counter-rotating twin-screw extruder for plastic pellet processing, which has the following beneficial effects:

[0017] (1) The utility model is provided with a feed hopper on the main body of the twin-screw plastic extruder, and a uniform material mixing assembly is provided above the feed hopper, wherein a plurality of first stirring rods and second stirring rods are staggered on the first transmission rod and the second transmission rod in the uniform material mixing assembly, thereby being able to stir and mix the plastic particles of different colors falling from the discharge bin evenly, and at the same time, the particle screen provided above the first transmission rod can screen the large particles in the plastic particles, thereby avoiding the problem that the large particles of plastic entering the main body of the twin-screw plastic extruder are difficult to melt quickly or cause material blockage, and ensuring that the plastic particles of different colors entering the main body of the twin-screw plastic extruder are evenly mixed and fully melted, thereby improving the quality of the extruded products as a whole and meeting the processing and use requirements of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For the utility model Figure 1 A magnified view of the structure of the middle discharge hole;

[0020] Figure 3 For the utility model Figure 1 Schematic diagram of the internal structure of the middle and lower material uniform mixing component;

[0021] Figure 4 For the utility model Figure 3 Schematic diagram of the structure of the middle and lower silo from the side.

[0022] In the figure: 1. Twin-screw plastic extruder body; 2. Extrusion die head; 3. Feed bin; 4. Feed hopper; 5. Discharging and mixing assembly;

[0023] 501. Discharge bin; 502. Discharge hole; 503. Closing plate; 504. First transmission rod; 505. First stirring rod; 506. Second transmission rod; 507. Second stirring rod; 508. Side rotating bin; 509. First pulley; 510. Second pulley; 511. First transmission belt; 512. Servo motor; 513. Third pulley; 514. Particle screen; 515. Third transmission rod; 516. Collision block; 517. Fourth pulley; 518. Second transmission belt. DETAILED DESCRIPTION

[0024] See also Figure 1-4 ,

[0025] Embodiment 1: A counter-rotating twin-screw extruder equipment for processing plastic pellets includes a twin-screw plastic extruder body 1, an extrusion processing die head 2 is provided at the end of the twin-screw plastic extruder body 1, a feed bin 3 is provided at the front end of the twin-screw plastic extruder body 1, a feed hopper 4 is provided at the top of the feed bin 3, and a uniform mixing component 5 for mixing and discharging materials is provided above the feed hopper 4.

[0026] The uniform mixing component 5 for discharging materials includes a discharging bin 501 arranged above the feed hopper 4, the bottom end of the discharging bin 501 is connected to the feed hopper 4, a discharge hole 502 is opened on the side of the discharging hole 502, a closing plate 503 is rotatably arranged on the outer side of the discharge hole 502, a first transmission rod 504 is rotatably arranged in the discharging bin 501, a plurality of first stirring rods 505 are evenly arranged on the first transmission rod 504, a second transmission rod 506 is arranged on the side of the first transmission rod 504, and the ends of the second transmission rod 506 are rotatably connected to the inner wall of the discharging bin 501.

[0027] Several second stirring rods 507 are evenly arranged on the second transmission rod 506, and the second stirring rods 507 are staggered with the first stirring rods 505. A side rotating bin 508 is arranged on the outside of the lower material bin 501. The ends of the first transmission rod 504 and the second transmission rod 506 rotate through the inner wall of the lower material bin 501 and extend into the side rotating bin 508. A first pulley 509 is provided at the end of the first transmission rod 504, and a second pulley 510 is provided at the end of the second transmission rod 506. The first pulley 509 and the second pulley 510 are connected to each other through a first transmission belt 511. A servo motor 512 is provided on the outside of the side rotating bin 508.

[0028] The driving shaft of the servo motor 512 rotates and passes through the side rotating bin 508 and is fixedly connected to the side of the second pulley 510. The other end of the first transmission rod 504 rotates and passes through the side wall of the lower bin 501. A third pulley 513 is provided at the end of the first transmission rod 504. A particle screen 514 is provided above the first transmission rod 504. The side of the particle screen 514 is rotatably connected to the inner wall of the lower bin 501 through a hinge. A third transmission rod 515 is rotatably provided in the lower bin 501. The third transmission rod 515 is located on the bottom side of the particle screen 514.

[0029] Two collision blocks 516 are symmetrically provided at both ends of the rod body of the third transmission rod 515. One end of the third transmission rod 515 rotates and passes through the inner wall of the lower hopper 501. A fourth pulley 517 is provided at the end of the third transmission rod 515. The fourth pulley 517 is connected to the third pulley 513 through a second transmission belt 518.

[0030] Embodiment 2: The difference between this embodiment and embodiment 1 is that the four sides of the outer side of the lower hopper 501 are fixedly connected to the top of the feed hopper 4 through support rods.

[0031] This enables the lower bin 501 to be fixed on the feed hopper 4 more stably.

[0032] Example 3: The difference between this example and Example 1 is that the particle screen 514 is arranged obliquely in the lower hopper 501 , and the inclined bottom of the particle screen 514 extends to the side of the discharge hole 502 .

[0033] This allows the large plastic particles filtered by the particle screen 514 to move to the discharge hole 502 more quickly for discharge.

[0034] Embodiment 4: The difference between this embodiment and embodiment 1 is that the collision and abutment blocks 516 are all semi-disc-shaped, and the side of the collision and abutment blocks 516 abuts against the bottom side of the particle screen 514 .

[0035] When the third transmission rod 515 rotates, it can drive the collision block 516 to repeatedly collide with the bottom of the particle screen 514.

[0036] In this embodiment, due to the actual use of the existing twin-screw extruder for plastic pellet processing, it is sometimes necessary to mix plastic pellets of various colors to prepare products of mixed colors. However, when mixing plastic pellets of various colors, users mostly adopt the method of pouring them separately and adding the plastic pellet raw materials in sequence for mixing. This mixing method can easily lead to uneven mixing of the plastic pellets, and then cause serious color difference in the subsequent hot-melt extruded products, which does not meet the user's production and processing requirements.

[0037] In summary, in specific implementation, when the user needs to add plastic particles of different colors into the twin-screw plastic extruder body 1 for mixed processing, the user needs to first start the servo motor 512, and the servo motor 512 drives the second pulley 510 to rotate, and the second pulley 510 is connected to the first pulley 509 through the first transmission belt 511, which can drive the first transmission rod 504 and the second transmission rod 506 to rotate at the same time, and the second stirring rod 507 and the first stirring rod 505 are staggered, so that the plastic particles falling between the second transmission rod 506 and the first transmission rod 504 can be mixed and stirred, so that the plastic particles fall into the feed hopper 4 after stirring and mixing.

[0038] At the same time, a third pulley 513 is provided at the end of the first transmission rod 504, and the third pulley 513 is connected to the fourth pulley 517 by a second transmission belt 518, which can drive the third transmission rod 515 to rotate, so that the collision resistance block 516 provided on the third transmission rod 515 can intermittently collide with the bottom side of the particle screen 514, so that the plastic particles falling on the particle screen 514 can fall quickly when filtered, and the large plastic particles retained by the filtration can quickly move to the side of the discharge hole 502.

[0039] The plastic particles are quickly discharged through the discharge hole 502, and the uniform mixing component 5 allows the particles of different colors to be mixed more evenly before entering the twin-screw plastic extruder body 1. At the same time, the large particles that are difficult to hot-melt can be filtered and screened, thereby making it more convenient for the plastic particles to be hot-melted and extruded in the twin-screw plastic extruder body 1, greatly improving the color of the extruded product to meet the user's needs.

Claims

1. A counter-rotating twin-screw extruder for processing plastic pellets, comprising a twin-screw plastic extruder body (1), characterized in that: An extrusion processing die head (2) is provided at the end of the twin-screw plastic extruder body (1), a feed bin (3) is provided at the front end of the twin-screw plastic extruder body (1), a feed hopper (4) is provided at the top end of the feed bin (3), and a uniform mixing assembly (5) for mixing and discharging materials is provided above the feed hopper (4); The uniform mixing component (5) includes a feeding bin (501) arranged above the feeding hopper (4), the bottom end of the feeding bin (501) is connected to the feeding hopper (4), a discharge hole (502) is provided on the side of the feeding bin (501), a closing plate (503) is rotatably provided on the outer side of the discharge hole (502), a first transmission rod (504) is rotatably provided in the feeding bin (501), a plurality of first stirring rods (505) are uniformly provided on the first transmission rod (504), and the side of the first transmission rod (504) is provided with a plurality of first stirring rods (505). A second transmission rod (506) is provided, and the ends of the second transmission rod (506) are rotatably connected to the inner wall of the lower material bin (501), and a plurality of second stirring rods (507) are evenly arranged on the second transmission rod (506), and the second stirring rods (507) are staggered with the first stirring rods (505). A side rotating bin (508) is provided on the outer side of the lower material bin (501), and the ends of the first transmission rod (504) and the second transmission rod (506) are rotatably passed through the inner wall of the lower material bin (501) and extended to the side rotating bin (508). In the bin (508), a first pulley (509) is provided at the end of the first transmission rod (504), and a second pulley (510) is provided at the end of the second transmission rod (506). The first pulley (509) and the second pulley (510) are connected to each other through a first transmission belt (511). A servo motor (512) is provided on the outside of the side rotating bin (508). The driving shaft of the servo motor (512) rotates through the side rotating bin (508) and is connected to the side of the second pulley (510). The first transmission rod (504) is fixedly connected, and the other end of the first transmission rod (504) rotates and passes through the side wall of the lower hopper (501). A third pulley (513) is provided at the end of the first transmission rod (504). A particle screen (514) is provided above the first transmission rod (504). The side of the particle screen (514) is rotatably connected to the inner wall of the lower hopper (501) through a hinge. A third transmission rod (515) is rotatably provided in the lower hopper (501), and the third transmission rod (515) is located on the bottom side of the particle screen (514).

2. The counter-rotating twin-screw extruder for plastic pellet processing according to claim 1, characterized in that: Two collision blocks (516) are symmetrically provided at both ends of the third transmission rod (515), and one end of the third transmission rod (515) rotates and penetrates the inner wall of the lower bin (501).

3. The counter-rotating twin-screw extruder for plastic pellet processing according to claim 2, characterized in that: A fourth pulley (517) is provided at the end of the third transmission rod (515), and the fourth pulley (517) is connected to the third pulley (513) through a second transmission belt (518).

4. The counter-rotating twin-screw extruder for plastic pellet processing according to claim 3, characterized in that: The four sides of the outer side of the lower hopper (501) are fixedly connected to the top of the feed hopper (4) via support rods.

5. The counter-rotating twin-screw extruder for plastic pellet processing according to claim 4, characterized in that: The particle screen (514) is tiltedly arranged in the lower hopper (501), and the tilted bottom of the particle screen (514) extends to the side of the discharge hole (502).

6. The counter-rotating twin-screw extruder for plastic pellet processing according to claim 5, characterized in that: The collision and abutment blocks (516) are all semi-disc-shaped, and the side edges of the collision and abutment blocks (516) abut against the bottom side of the particle screen (514).

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