Granulator for recycling regenerated plastic

Abstract

The utility model discloses a granulator for recycling regenerated plastics, which comprises a forming cylinder, an extrusion rod is arranged in the forming cylinder along the direction of the central axis of the forming cylinder, auger blades are arranged on the side wall of the extrusion rod, one end of the extrusion rod is connected with a driving device for driving the extrusion rod to rotate, the granulator further comprises a forming die with a disc-shaped structure, and one end of the forming cylinder is provided with an opening. The forming mold is arranged in the opening, a plurality of forming holes are formed in the forming mold, a through hole is formed in the center axis of the forming mold, the other end of the extrusion rod penetrates through the through hole and extends to the outside of the forming cylinder, an L-shaped clamping groove is formed in the opening end of the forming cylinder, and a clamping block matched with the clamping groove is arranged on the side wall of the forming mold; and the cutting knife comprises a mounting sleeve sleeving the other end of the extrusion rod and a blade arranged on the outer wall of the mounting sleeve, so that the replacement process of the forming mold and the cutting knife can be simplified, the replacement time of the forming mold and the cutting knife is shortened, and the production efficiency of the granulator is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of recycled plastic recycling, especially to a granulator for recycling regenerated plastics. BACKGROUND

[0002] The plastic granulator is mainly used for processing waste plastic films (industrial packaging films, agricultural mulching films, greenhouse films, beer bags, handbags, etc.), woven bags, agricultural convenient bags, pots, barrels, beverage bottles, furniture, daily necessities, etc., and is suitable for most common waste plastics, is the most widely used plastic recycling processing machinery in the waste plastic recycling industry, and is the most popular among users.

[0003] At present, the forming die and the cutting knife at the discharge opening of the plastic granulator need to be replaced frequently due to wear, and the replacement process of the forming die and the cutting knife is relatively complex, which leads to a long replacement time of the forming die and the cutting knife, thereby greatly reducing the production efficiency of the granulator and having certain defects. SUMMARY

[0004] The utility model aims at overcoming the above technical deficiencies, and provides a granulator for recycling regenerated plastics, which solves the technical problem that the replacement process of the forming die and the cutting knife at the discharge opening of the plastic granulator in the prior art is relatively complex, which leads to a long replacement time of the forming die and the cutting knife, thereby greatly reducing the production efficiency of the granulator.

[0005] To achieve the above technical purpose, the technical scheme of the utility model provides a granulator for recycling regenerated plastics, which comprises a forming cylinder, an extrusion rod is arranged inside the forming cylinder along the central axis direction, a screw flight is arranged on the side wall of the extrusion rod, one end of the extrusion rod is connected with a driving device for driving the extrusion rod to rotate, the granulator further comprises a forming die in a disc structure, an opening is arranged at one end of the forming cylinder, the forming die is arranged inside the opening, a plurality of forming holes are arranged on the forming die, a through hole is arranged at the central axis of the forming die, the other end of the extrusion rod passes through the through hole and extends to the outside of the forming cylinder, an L-shaped clamping groove is arranged at the opening end of the forming cylinder, a clamping block matched with the clamping groove is arranged on the side wall of the forming die, the granulator further comprises a cutting knife, the cutting knife comprises a mounting sleeve arranged on the other end of the extrusion rod and a blade arranged on the outer wall of the mounting sleeve, a strip-shaped limiting groove is arranged on the side wall of the other end of the extrusion rod along the central axis direction, a limiting block matched with the limiting groove is arranged on the inner wall of the mounting sleeve, and a nut for fixing the mounting sleeve to the other end of the extrusion rod is threadedly connected to the side wall of the other end of the extrusion rod.

[0006] Further, the granulator further comprises a fixing frame in a disc structure, a through hole for sleeving the extrusion rod is arranged at the center of the fixing frame, and a fixing block matched with the clamping groove is arranged on the side wall of the fixing frame.

[0007] Further, a plane bearing is arranged between the fixing frame and the mounting sleeve of the cutting knife.

[0008] Further, the nut comprises a locking nut and an adjusting nut arranged between the locking nut and the mounting sleeve of the cutting knife.

[0009] Further, the locking nut is a cover-type nut.

[0010] Further, the driving device is an electric motor.

[0011] Further, the sidewall of the forming cylinder away from the open end is provided with a feeding hopper.

[0012] The recycling plastic granulator has the advantages that the recycling plastic granulator can simplify the replacement process of the forming die and the cutting knife, reduce the replacement time of the forming die and the cutting knife, and thus improve the production efficiency of the granulator. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a recycling plastic granulator structure schematic view of the embodiment of the utility model;

[0014] Figure 2 is a recycling plastic granulator sectional view of the embodiment of the utility model;

[0015] Figure 3 is a forming cylinder structure schematic view of the embodiment of the utility model;

[0016] Figure 4 is an extrusion rod structure schematic view of the embodiment of the utility model;

[0017] Figure 5 is a forming die structure schematic view of the embodiment of the utility model;

[0018] Figure 6 is a cutting knife structure schematic view of the embodiment of the utility model;

[0019] Figure 7 is a fixed frame structure schematic view of the embodiment of the utility model;

[0020] In the drawing: 1, forming cylinder; 11, clamping groove; 12, feeding hopper; 2, extrusion rod; 21, limiting slot; 3, auger blade; 4, driving device; 5, forming die; 51, forming hole; 52, through hole; 53, clamping block; 6, cutting knife; 61, mounting sleeve; 62, blade; 63, limiting block; 7, nut; 71, locking nut; 72, adjusting nut; 8, fixed frame; 81, perforation; 82, fixed block. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] This utility model embodiment provides a granulator for recycling plastics, such as... Figures 1-7 As shown, the granulator includes a forming cylinder 1, which is a hollow cylindrical body. An extrusion rod 2 is located inside the forming cylinder 1 along its central axis. Screw blades 3 are located on the outer wall of the extrusion rod 2. One end of the extrusion rod 2 is connected to a drive device 4 for rotating the extrusion rod 2. The granulator also includes a disc-shaped forming mold 5. One end of the forming cylinder 1 has an opening, and the forming mold 5 is located inside the opening. The forming mold 5 has several forming holes 51, and a through hole 52 is located at the central axis of the forming mold 5. The other end of the extrusion rod 2 passes through the through hole 52 and extends to the outside of the forming cylinder 1. The opening end of the forming cylinder 1 is surrounded by a ring-shaped structure with its central axis as the center. The granulator is provided with several L-shaped slots 11, one end of which is open and the other end is closed. The side wall of the forming mold 5 is provided with several locking blocks 53 that cooperate with the slots 11 in a ring around its central axis. The granulator also includes a cutting blade 6, which includes a mounting sleeve 61 sleeved on the other end of the extrusion rod 2 and a blade 62 on the outer wall of the mounting sleeve 61. The side wall of the other end of the extrusion rod 2 is provided with a strip-shaped limiting groove 21 along its central axis. The inner wall of the mounting sleeve 61 is provided with a limiting block 63 that matches the limiting groove 21. The side wall of the other end of the extrusion rod 2 is also threaded with a nut 7 for fixing the mounting sleeve 61 to the other end of the extrusion rod 2.

[0023] In this embodiment, a feeding hopper 12 is provided on the side wall of the molding cylinder 1 away from its opening. When the granulator is working, recycled plastic is added into the molding cylinder 1 through the feeding hopper 12. The extrusion rod 2 can be driven to rotate by the driving device 4. The extrusion rod 2 can drive the auger blade 3 to rotate, extruding the recycled plastic inside the molding cylinder 1 through the through hole 52 on the molding die 5. At the same time, the extrusion rod 2 can drive the cutting blade 6 to rotate, cutting the extruded strip plastic into granules. When the cutting blade 6 needs to be replaced, the nut 7 can be unscrewed from the extrusion rod 2, and then the cutting blade 6 can be removed from the extrusion rod 2 for replacement. When the molding die 5 needs to be replaced, the nut 7 can be unscrewed from the extrusion rod 2, and then the cutting blade 6 and the molding die 5 can be removed from the extrusion rod 2 in sequence for replacement. The operation is convenient, reducing the replacement time of the molding die 5 and the cutting blade 6, thereby improving the production efficiency of the granulator.

[0024] In this embodiment, the granulator further comprises a fixed frame 8 in the shape of a disc, which is arranged between the forming die 5 and the cutting knife 6. The fixed frame 8 is provided with a through hole 81 in the center for sleeving the extrusion rod 2. The side wall of the fixed frame 8 is provided with a fixing block 82 matched with the clamping groove 11. The opening end of the clamping groove 11 can be closed by the fixing block 82, so that the clamping block 53 on the side wall of the forming die 5 can be fixed inside the clamping groove 11. In this way, the forming die 5 can be prevented from loosening during the operation of the granulator, so as to affect the normal operation of the granulator.

[0025] In this embodiment, a plain bearing 9 is arranged between the fixed frame 8 and the mounting sleeve 61 of the cutting knife 6. The plain bearing 9 is sleeved on the extrusion rod 2. The fixed frame 8 can be fixed by the plain bearing 9, so as to prevent the fixed frame 8 from loosening and affecting the normal operation of the granulator. Meanwhile, the nut 7 comprises a locking nut 71 and an adjusting nut 72 arranged between the locking nut 71 and the mounting sleeve 61 of the cutting knife 6. The locking nut 71 is a cover nut. The tightness between the mounting sleeve 61 of the cutting knife 6 and the plain bearing 9 can be adjusted by the adjusting nut 72. Meanwhile, the adjusting nut 72 can be locked by the locking nut 71, so as to prevent the cutting knife 6 from loosening after being mounted and affecting the normal operation of the granulator.

[0026] In this embodiment, the driving device 4 is an electric motor.

[0027] For the driving device 4, it only needs to meet the requirement of driving the extrusion rod 2 to rotate. Therefore, it is not limited to a specific structure. For example, in other embodiments, the driving device 4 is a hydraulic motor or a pneumatic motor or other driving member capable of driving the extrusion rod 2 to rotate.

[0028] Specific principle: when the cutting knife 6 needs to be replaced due to damage, the nut 7 can be unscrewed from the extrusion rod 2, and then the cutting knife 6 can be removed from the extrusion rod 2. Then, a new cutting knife 6 is sleeved on the extrusion rod 2, and the nut 7 is screwed on the extrusion rod 2 to fix the cutting knife 6. In this way, the cutting knife 6 can be replaced. When the forming die 5 needs to be replaced, the nut 7 can be unscrewed from the extrusion rod 2, and then the cutting knife 6 can be removed from the extrusion rod 2. After the cutting knife 6 is removed from the extrusion rod 2, the forming die 5 is rotated to make the clamping block 53 on the side wall of the forming die 5 disengage from the clamping groove 11 at the opening end of the forming cylinder 1. Then, the forming die 5 is removed from the extrusion rod 2. Then, a new forming die 5 is sleeved on the extrusion rod 2, and the clamping block on the side wall of the forming die 5 is clamped into the clamping groove 11 at the opening end of the forming cylinder 1. Then, the cutting knife 6 is sleeved on the extrusion rod 2 and locked by the nut 7. In this way, the forming die 5 can be replaced. The operation is convenient, the replacement time of the forming die 5 and the cutting knife 6 is reduced, and the production efficiency of the granulator is improved.

[0029] The granulator for recycling and regenerating plastics can simplify the replacement process of the forming die and the cutting knife, reduce the replacement time of the forming die and the cutting knife, and thus improve the production efficiency of the granulator.

[0030] The specific embodiments of the present application described above do not constitute a limitation on the scope of protection of the present application. Any other corresponding changes and modifications made according to the technical concept of the present application shall be included in the scope of protection of the claims of the present application.

Claims

1. A pelletizer for recycling of plastic waste, characterized in that The granulator comprises a forming cylinder (1), an extrusion rod (2) is arranged inside the forming cylinder (1) along the central axis direction of the forming cylinder (1), the side wall of the extrusion rod (2) is provided with a screw blade (3), one end of the extrusion rod (2) is connected with a driving device (4) for driving the extrusion rod (2) to rotate, the granulator further comprises a disc-shaped forming die (5), one end of the forming cylinder (1) is provided with an opening, the forming die (5) is arranged inside the opening, a plurality of forming holes (51) are arranged on the forming die (5), a through hole (52) is arranged at the central axis of the forming die (5), the other end of the extrusion rod (2) passes through the through hole (52) and extends to the outside of the forming cylinder (1), the opening end of the forming cylinder (1) is provided with an L-shaped clamping groove (11), the side wall of the forming die (5) is provided with a clamping block (53) matched with the clamping groove (11), the granulator further comprises a cutting knife (6), the cutting knife (6) comprises a mounting sleeve (61) sleeved on the other end of the extrusion rod (2) and a blade (62) arranged on the outer wall of the mounting sleeve (61), the side wall of the other end of the extrusion rod (2) is provided with a strip-shaped limiting groove (21) along the central axis direction of the extrusion rod (2), the inner wall of the mounting sleeve (61) is provided with a limiting block (63) matched with the limiting groove (21), and the side wall of the other end of the extrusion rod (2) is further threadedly connected with a nut (7) for fixing the mounting sleeve (61) on the other end of the extrusion rod (2).

2. The pelletizer of recycled plastic as claimed in claim 1 wherein, The granulator further comprises a disc-shaped fixing frame (8), the fixing frame (8) is provided with a through hole (81) arranged on the extrusion rod (2), and the side wall of the fixing frame (8) is provided with a fixing block (82) matched with the clamping groove (11).

3. The pelletizer of recycled plastic as claimed in claim 2 wherein, A plane bearing (9) is arranged between the fixing frame (8) and the mounting sleeve (61) of the cutting knife (6).

4. The pelletizer for recycling plastic according to claim 1, wherein The nut (7) comprises a locking nut (71) and an adjusting nut (72) arranged between the locking nut (71) and the mounting sleeve (61) of the cutting knife (6).

5. The pelletizer of recycled plastic as claimed in claim 4 wherein, The locking nut (71) is a cover nut.

6. The recycled plastic pelletizer of claim 1, wherein, The driving device (4) is a motor.

7. The recycled plastic pelletizer of claim 1, wherein, The side wall of the forming cylinder (1) away from the opening end thereof is provided with a feeding hopper (12).

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