Parallel double screw double section machine for waste plastic recycling

Abstract

The present application relates to the technical field of plastic extruding machine, and discloses a parallel double-screw double-section machine for waste plastic recycling, which comprises a machine body, a power mechanism arranged on one side of the top of the machine body, a feeding mechanism arranged on the side of the power mechanism, a passage connected to the bottom of the feeding mechanism, the inside of the passage is transmissionally connected with the power mechanism at one end, a plurality of heating mechanisms are arranged outside the passage, a machine head is communicatively arranged at the end of the passage away from the power mechanism, two screws are rotationally arranged on the machine head, the two screws are symmetrically arranged inside the passage, a locking nut is screwed on the end of the screw close to the machine head, the end of the screw away from the machine head is transmissionally connected with the power mechanism, according to the setting of the pull rod seat, firstly, the locking nut is loosened, so that the screw is in the unlocked state, then, according to the insertion column, the occlusion piece and the nut, the screw is installed on the pull rod seat, and the screw can rotate during the pulling-out process, the screw is pulled out by the rack, and it is not necessary to pry the screw, so that the surface of the screw is prevented from being damaged.

Description

Technical Field

[0001] This invention relates to the field of extruder technology, specifically to a parallel twin-screw double-section extruder for waste plastic recycling. Background Technology

[0002] Extruders, also known as screw extruders, are the core machines in plastic processing. They rely on the screw to heat and shear, melting and pressurizing plastic granules and powders before continuously extruding them into shapes. With different dies and auxiliary machines, they can produce various plastic products.

[0003] In existing technology, when removing the screw from an extruder, the machine body is used as a fulcrum, and a pry bar is used to pry the screw outward for cleaning. However, when prying, the pry bar will come into contact with the threads on the screw surface, which can easily cause wear on the screw and affect its later use. In addition, after the screw is pulled out, it needs to be rotated separately for cleaning, which is inefficient. Therefore, this invention proposes a parallel twin-screw double-section extruder for waste plastic recycling to solve the above-mentioned defects. Summary of the Invention

[0004] The purpose of this invention is to provide a parallel twin-screw double-section machine for waste plastic recycling, to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: It includes a machine body, a power mechanism is provided on one side of the top of the machine body, a feeding mechanism is provided on the side of the power mechanism, a channel is connected to the bottom of the feeding mechanism, one end of the channel is connected to the power mechanism for transmission, several heating mechanisms are provided on the outside of the channel, and a machine head is connected to the end of the channel away from the power mechanism.

[0005] Two screws are rotatably mounted on the machine head, and the two screws are symmetrically arranged inside the channel. A locking nut is screwed to the end of the screw near the machine head, and the end of the screw away from the machine head is connected to the power mechanism for transmission.

[0006] Preferably, a side plate is provided on the side of the machine head, a support shaft is fixedly installed at the bottom of the side plate, a support shaft is fixedly installed on the upper side of the side plate, a lever seat is rotatably connected to the middle of the side plate, and inserts are symmetrically and rotatably arranged on the lever seat. A locking member is elastically provided on the surface of the insert near the screw. A nut is screwed through the lever seat at the center of the insert and screwed to it. The nut is screwed to the insert and the locking member abuts against the inner part of the insert.

[0007] Preferably, a toothed ring is fixedly connected to the outer surface of the insertion post. The toothed ring is adapted to the insertion post, and the two toothed rings mesh with each other. A drive mechanism is connected to the top of one of the toothed rings.

[0008] Preferably, a rack is slidably provided on the side of the heating mechanism, and a second gear ring is engaged on the side of the rack. The second gear ring has teeth inside and is rotatably disposed on the side of the heating mechanism.

[0009] Preferably, a chassis is provided below the gear ring two, a gear is fixedly connected to the bottom of the chassis, a pressure spring is hinged to the top of the chassis, and a stop plate is provided on the side of the pressure spring plate that is hinged to the chassis. The two sides of the stop plate abut against the gear ring two and the pressure spring plate respectively.

[0010] Preferably, the side of the gear meshes with a pusher, and the end of the pusher is connected to the output shaft of an electric cylinder.

[0011] Preferably, the top two ends of the rack are fixedly connected to a top frame, the top frame is arranged in a curved structure, and the height of the top frame on the side closer to the machine head is higher than the height of the other end.

[0012] Preferably, a mounting plate is slidably disposed on the top of the machine head, and three wire reels are slidably disposed on the mounting plate, wherein two of the wire reels are symmetrically disposed on both sides of the mounting plate, and the third wire reel is disposed in the middle of the mounting plate below the two symmetrical wire reels, and all the wire reels are disposed above the screw.

[0013] Preferably, a spring is movably sleeved on the top of the wire reel, the top of the spring abuts against the mounting plate, a spray arm is installed below the mounting plate, and a shaft is fixedly connected to the top of the mounting plate, with one end of the shaft extending beyond the side of the mounting plate.

[0014] Preferably, the shaft abuts against the lower surface of the top frame, and a spring bar is provided at the connection between the mounting plate and the machine head.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] In this invention, according to the set pull rod seat, the locking nut is first loosened to make the screw in the unlocked state. Then, according to the insert, the engaging part and the nut, the screw is installed on the pull rod seat. The screw can rotate during the pulling process. The screw is pulled outward by the rack without prying the screw, thus avoiding damage to the screw surface.

[0017] In this invention, the wire reel is used to make the screw pull-out process a synchronous cleaning operation by tightly rubbing the screw surface threads against the wire reel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the screw and locking nut structure of the present invention;

[0020] Figure 3 This is a partial structural diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the rack structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the support shaft and the abutment shaft of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the compression spring and the abutment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the wire reel of the present invention.

[0025] In the diagram: 1. Machine body; 2. Power mechanism; 3. Feeding mechanism; 4. Channel; 5. Heating mechanism; 6. Machine head; 7. Screw; 8. Locking nut; 9. Side plate; 10. Support shaft; 11. Support shaft; 12. Pull rod seat; 13. Insert post; 14. Engaging part; 15. Nut; 16. Gear ring one; 17. Drive mechanism; 18. Rack; 19. Gear ring two; 20. Toothed edge; 21. Chassis; 22. Gear; 23. Compression spring; 24. Abutment; 25. Push seat; 26. Electric cylinder; 27. Top frame; 28. Mounting plate; 29. ​​Wire reel; 30. Spring; 31. Spray arm; 32. Shaft; 33. Elastic rod. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1 to 7 The present invention provides a technical solution: including a body 1, a power mechanism 2 is provided on one side of the top of the body 1, a feeding mechanism 3 is provided on the side of the power mechanism 2, a channel 4 is connected to the bottom of the feeding mechanism 3, one end of the inside of the channel 4 is connected to the power mechanism 2 for transmission, several heating mechanisms 5 are provided on the outside of the channel 4, and an organic head 6 is connected to the end of the channel 4 away from the power mechanism 2.

[0028] Two screws 7 are rotatably mounted on the machine head 6. The two screws 7 are configured as a modular assembly structure and are symmetrically arranged inside the channel 4. A locking nut 8 is screwed to the end of the screw 7 closest to the machine head 6, and the end of the screw 7 furthest from the machine head 6 is connected to the power mechanism 2 for transmission.

[0029] A side plate 9 is provided on the side of the machine head 6. A support shaft 10 is fixedly installed at the bottom of the side plate 9. A support shaft 11 is fixedly installed on the upper side of the side plate 9. A lever seat 12 is rotatably connected to the middle of the side plate 9. A pin 13 is symmetrically and rotatably provided on the lever seat 12. A locking member 14 is elastically provided on the surface of the pin 13 near the screw 7. A nut 15 is screwed into the lever seat 12 through the axis of the pin 13. The nut 15 is screwed into the pin 13, and the nut 15 and the locking member 14 abut against each other inside the pin 13.

[0030] A toothed ring 16 is fixedly connected to the outer surface of the insert 13. The toothed ring 16 is adapted to the insert 13, and the two toothed rings 16 mesh with each other. A drive mechanism 17 is connected to the top of one of the toothed rings 16.

[0031] A rack 18 is slidably arranged on the side of the heating mechanism 5, and a gear ring 19 is engaged on the side of the rack 18. The gear ring 19 has a toothed opening 20 inside, and the gear ring 19 is rotatably arranged on the side of the heating mechanism 5.

[0032] A base 21 is provided below the gear ring 29. A gear 22 is fixedly connected to the bottom of the base 21. A pressure spring 23 is hinged to the top of the base 21. A stop plate 24 is provided on the side of the pressure spring 23 and is hinged to the base 21. The two sides of the stop plate 24 abut against the gear ring 29 and the pressure spring 23 respectively.

[0033] The side of the gear 22 is engaged with the push seat 25, and the end of the push seat 25 is connected to the output shaft of the electric cylinder 26.

[0034] The top two ends of the rack 18 are fixedly connected to the top frame 27. The top frame 27 is set in a curved structure, and the height of the top frame 27 on the side closer to the machine head 6 is higher than the height of the other end.

[0035] A mounting plate 28 is slidably mounted on the top of the machine head 6. Three wire reels 29 are slidably mounted on the mounting plate 28. Two of the wire reels 29 are symmetrically arranged on both sides of the mounting plate 28, and the third wire reel 29 is located in the middle of the mounting plate 28, below the two symmetrical wire reels 29. All the wire reels 29 are located above the screw 7.

[0036] A spring 30 is movably sleeved on the top of the wire reel 29. The top of the spring 30 abuts against the mounting plate 28. A spray arm 31 is installed below the mounting plate 28. A shaft 32 is fixedly connected to the top of the mounting plate 28. One end of the shaft 32 extends beyond the side of the mounting plate 28.

[0037] The shaft 32 abuts against the lower surface of the top frame 27, and a spring rod 33 is provided at the connection between the mounting plate 28 and the machine head 6.

[0038] The method of use and advantages of this invention: The working process of this parallel twin-screw double-section waste plastic recycling machine is as follows:

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown:

[0040] S1: Before starting the screw 7 pull-out operation, first open the machine head 6 sealing plate, loosen the locking nut 8 and remove it, and disconnect the power mechanism 2 at the other end from the screw 7;

[0041] S2: The operator rotates the lever seat 12 to change it from a leaning state to a horizontal state, with its bottom contacting the support shaft 10. The lever seat 12 is pushed on the side plate 9 towards the screw 7, and the end of the insert 13 is inserted into the screw 7. Then the nut 15 is tightened, so that the engagement member 14 is squeezed by the nut 15. The engagement member 14 opens outward and bites the threaded end of the screw 7, so that the screw 7 is connected to the lever seat 12.

[0042] S3: Start the electric cylinder 26 to reciprocate outward and retract the push seat 25. During this process, the gear 22 drives the chassis 21 to rotate, and the pressure spring 23 squeezes the abutment 24, so that the abutment 24 is tightly attached to the inner wall of the gear ring 19. This drives the gear ring 19 to push the rack 18. The rack 18 slides along the outer side of the heating mechanism 5. During this process, the screw 7 is pulled outward. During the return of the push seat 25, the gear ring 19 does not rotate according to the pressure spring 23 and the abutment 24, thus realizing the stop and pullout of the screw 7.

[0043] S4: When the pull rod seat 12 pulls the screw 7 outward, the top frame 27 moves with the rack 18 and continuously presses the shaft 32 downward. When the top frame 27 contacts the shaft 32 at its low position, the mounting plate 28 is driven to a low position by the shaft 32. During the process, two symmetrically arranged wire discs 29 continuously abut against the threads of the two screws 7, and another centrally arranged wire disc 29 abuts against the junction of the two screws 7, continuously rubbing the surface of the screws 7. During the process, the spray arm 31 sprays out the desiccant, which rubs against the wire discs 29 to clean the screws 7. According to the drive mechanism 17 and the gear ring 16, the two screws 7 rotate relative to each other for comprehensive cleaning.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A parallel twin-screw (7) double-section machine for waste plastic recycling, characterized in that, Includes a body (1), a power mechanism (2) is provided on one side of the top of the body (1), a feeding mechanism (3) is provided on the side of the power mechanism (2), a channel (4) is connected to the bottom of the feeding mechanism (3), one end of the inside of the channel (4) is connected to the power mechanism (2) for transmission, several heating mechanisms (5) are provided on the outside of the channel (4), and an organic head (6) is connected to the end of the channel (4) away from the power mechanism (2). Two screws (7) are rotatably mounted on the machine head (6). The two screws (7) are symmetrically arranged inside the channel (4). A locking nut (8) is screwed to the end of the screw (7) near the machine head (6). The end of the screw (7) away from the machine head (6) is connected to the power mechanism (2) for transmission.

2. The parallel twin-screw (7) double-section machine for waste plastic recycling according to claim 1, characterized in that: The side of the machine head (6) is provided with a side plate (9), a support shaft (10) is fixedly installed at the bottom of the side plate (9), a support shaft (11) is fixedly installed on the upper side of the side plate (9), a lever seat (12) is rotatably connected to the middle of the side plate (9), a plug (13) is symmetrically and rotatably provided on the lever seat (12), a biting part (14) is elastically provided on the surface of the plug (13) near the screw (7), the axis of the plug (13) passes through the lever seat (12) and is screwed with a nut (15), the nut (15) is screwed to the plug (13), and the nut (15) and the biting part (14) are located in the inner part of the plug (13) and abut against each other.

3. The parallel twin-screw (7) double-section machine for waste plastic recycling according to claim 2, characterized in that: A toothed ring (16) is fixedly connected to the outer surface of the insert (13). The toothed ring (16) is adapted to the insert (13), and the two toothed rings (16) mesh with each other. A drive mechanism (17) is connected to the top of one of the toothed rings (16).

4. The parallel twin-screw (7) double-section machine for waste plastic recycling according to claim 1, characterized in that: A rack (18) is slidably provided on the side of the heating mechanism (5), and a second gear ring (19) meshes with the side of the rack (18). The second gear ring (19) has a toothed opening (20) inside, and the second gear ring (19) is rotatably provided on the side of the heating mechanism (5).

5. The parallel twin-screw (7) double-section machine for waste plastic recycling according to claim 4, characterized in that: A base (21) is provided below the gear ring 2 (19). A gear (22) is fixedly connected to the bottom of the base (21). A pressure spring (23) is hinged to the top of the base (21). A stop plate (24) is provided on the side of the pressure spring (23) and is hinged to the base (21). The two sides of the stop plate (24) abut against the gear ring 2 (19) and the pressure spring (23) respectively.

6. A parallel twin-screw (7) double-section machine for waste plastic recycling according to claim 5, characterized in that: The side of the gear (22) is engaged with a pusher (25), and the end of the pusher (25) is connected to the output shaft of the electric cylinder (26).

7. A parallel twin-screw (7) double-section machine for waste plastic recycling according to claim 4, characterized in that: The top two ends of the rack (18) are fixedly connected to the top frame (27). The top frame (27) is arranged in a curved structure, and the height of the top frame (27) on the side closer to the machine head (6) is higher than the height of the other end.

8. A parallel twin-screw (7) double-section machine for waste plastic recycling according to claim 7, characterized in that: A mounting plate (28) is slidably disposed on the top of the machine head (6). Three wire reels (29) are slidably disposed on the mounting plate (28). Two of the wire reels (29) are symmetrically disposed on both sides of the mounting plate (28), and the other wire reel (29) is disposed in the middle of the mounting plate (28) below the two symmetrical wire reels (29). All the wire reels (29) are disposed above the screw (7).

9. A parallel twin-screw (7) double-section machine for waste plastic recycling according to claim 8, characterized in that: A spring (30) is movably sleeved on the top of the wire reel (29). The top of the spring (30) abuts against the mounting plate (28). A spray arm (31) is installed below the mounting plate (28). A shaft (32) is fixedly connected to the top of the mounting plate (28). One end of the shaft (32) extends beyond the side of the mounting plate (28).

10. A parallel twin-screw (7) double-section machine for waste plastic recycling according to claim 9, characterized in that: The shaft (32) abuts against the lower surface of the top frame (27), and a spring rod (33) is provided at the connection between the mounting plate (28) and the machine head (6).

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