PP plastic particle processing and cutting mechanism

Abstract

The utility model relates to the technical field of plastics processing, concretely to a kind of PP plastic granule processing granulating mechanism, including cabinet, its inside upper portion is adjustably provided with granulating roller one and granulating roller two by adjusting mechanism;Frame is fixedly connected to the left end middle part outside of cabinet, and dust removal mechanism is arranged between the frame and cabinet.The utility model drives driving granulating roller by motor, and by the cooperation use of transmission chain formed by bevel gear one, bevel gear two, spline sleeve and spline shaft, it is ensured that driving granulating roller and driven granulating roller can realize mandatory synchronous relative rotation, fundamentally solve the problem that material skids, accumulates and jams easily in the prior art driven roller rely on friction.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, specifically to a pelletizing mechanism for processing PP plastic granules. Background Technology

[0002] PP plastic, also known as polypropylene, is another excellent resin variety developed after nylon. It has high impact resistance, strong mechanical properties, and resistance to various organic solvents and acid and alkali corrosion. It has wide applications in industry and is one of the most common polymer materials.

[0003] As disclosed in patent application CN211221554U, a pelletizing mechanism for processing PP plastic granules includes a pelletizing box body, a feed inlet at the top of the pelletizing box body, a feeding funnel installed at the feed inlet, and a pelletizing mechanism inside the pelletizing box body. A drive motor is installed on the outer wall of the pelletizing box body, and the output end of the drive motor is connected to a first roller, which is rotatably installed on the inner wall of the pelletizing box body. The advantages of this invention, achieved by adopting the above technical solution, are: ease of adjusting the production of PP plastic granules of different sizes and environmental purification during the granulation process.

[0004] Although the aforementioned patent allows for adjustment of the distance between the two rollers, the second roller is only mounted via a sliding frame and does not have any independent drive components. In this case, relying solely on the rotation of the first roller and its engagement with the second roller, the PP melt or softened plastic strip is sticky and easily adheres to the roller surface. When the first roller attempts to drive the second roller, it is more likely that the material will slip and accumulate in the roller gap, eventually leading to blockage, rather than being successfully pulled in and cut off. Utility Model Content

[0005] The purpose of this invention is to provide a PP plastic pelletizing and pelletizing mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A PP plastic pelletizing and pelletizing mechanism, comprising: The machine casing contains two pelletizing rollers, one and two pelletizing rollers, which can be adjusted and installed on the upper part of the casing via an adjustment mechanism. The frame is fixedly connected to the outer side of the middle left end of the chassis, and a dust removal mechanism is provided between the frame and the chassis.

[0007] Preferably, the adjustment mechanism includes a push frame disposed outside one end of the second pelletizing roller away from the first pelletizing roller, a bevel gear 1 rotatably connected to the machine housing and the left side of the push frame via bearings, and a transmission box horizontally fixedly connected to the upper left side of the machine housing. The two ends of the first pelletizing roller are rotatably connected to the machine housing via bearings, and the two ends of the second pelletizing roller are rotatably connected to the push frame via bearings. A motor is fixedly connected to the right side of the machine housing. The two bevel gears 1 are fixedly connected to the first pelletizing roller and the second pelletizing roller respectively. The output shaft of the motor is fixedly connected to the right side of the first pelletizing roller. Preferably, the adjustment mechanism further includes a fixed frame fixedly connected to the left side inside the transmission box, and a horizontal plate fixedly connected to the outside of the left side of the push frame. A spline sleeve is rotatably connected to the middle of the fixed frame via a bearing, and a spline shaft is rotatably connected to the middle of the horizontal plate via a bearing. The spline sleeve and the opposite end of the spline shaft are splinedly connected, and the opposite ends of the spline sleeve and the spline shaft are both fixedly connected to a bevel gear two that meshes with the two bevel gears one. Preferably, the adjustment mechanism further includes an electric push rod fixedly connected to the outside of the front of the chassis, and symmetrical movable holes that are opened through the chassis near the electric push rod on both sides. Guide rods are movably connected inside the two movable holes, and the ends of the guide rods are fixedly connected to the back of the push frame. Preferably, the transmission box has a sliding groove at both the upper and lower ends on the right side, and the push frame has a slider fixedly connected to both the upper and lower ends on both sides. The two sliders on the left side slide in cooperation with the sliding groove, and a sliding seat is fixedly connected to the inner wall of the right side of the housing, which slides in cooperation with the two sliders on the right side. Preferably, the dust removal mechanism includes a fan fixedly connected to the top of the frame, and suction pipes fixedly connected to the upper and lower ends of the left side of the casing respectively. A three-way valve is fixedly connected to one end of each suction pipe facing each other. A filter cartridge is detachably connected to the end of the three-way valve away from the two suction pipes and the input end of the fan via a flange. A feeding hopper is fixedly connected to the middle of the top of the casing. A discharge port is opened at the bottom front of the casing. A guide plate is fixedly connected between the discharge port and the interior of the casing.

[0008] Compared with the prior art, the beneficial effects of this utility model are: This PP plastic pelletizing and pelletizing mechanism uses a motor to drive the active pelletizing roller, and through the cooperation of a transmission chain consisting of bevel gear one, bevel gear two, spline sleeve and spline shaft, it ensures that the active pelletizing roller and the driven pelletizing roller can achieve forced synchronous relative rotation, fundamentally solving the problems of material slippage and accumulation blockage that easily occur when the driven roller relies on friction to drive in the prior art.

[0009] This PP plastic pelletizing and pelletizing mechanism uses an electric push rod to drive the push frame, and with the sliding guidance of the guide rod and the sliding engagement of the slider and the chute, the distance between the two pelletizing rollers can be adjusted. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall main structure of this utility model; Figure 2 This is a schematic diagram of the guide rod installation structure of this utility model; Figure 3 For the present utility model Figure 1 Enlarged view of point A in the middle; Figure 4 For the present utility model Figure 2 Enlarged diagram of point B in the middle.

[0011] In the diagram: 1. Chassis; 2. Pelletizing roller one; 3. Pelletizing roller two; 4. Frame; 5. Push frame; 6. Transmission box; 7. Motor; 8. Bevel gear one; 9. Fixed frame; 10. Horizontal plate; 11. Spline sleeve; 12. Spline shaft; 13. Bevel gear two; 14. Electric push rod; 15. Movable hole; 16. Guide rod; 17. Slide groove; 18. Slider; 19. Fan; 20. Suction pipe; 21. Three-way valve; 22. Filter cartridge; 23. Feed hopper; 24. Discharge port; 25. Guide inclined plate. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] like Figure 1-4 As shown, this utility model provides a technical solution: A PP plastic granulation and pelletizing mechanism includes a housing 1, inside which pelletizing roller 2 and pelletizing roller 3 are adjustablely mounted via an adjustment mechanism. The adjustment mechanism includes a push frame 5 located outside the end of pelletizing roller 3 away from pelletizing roller 2; bevel gears 8 rotatably connected to the housing 1 and the left side of the push frame 5 via bearings; and a transmission box 6 horizontally fixedly connected to the upper left side of the housing 1. Both ends of pelletizing roller 2 are rotatably connected to the housing 1 via bearings, and both ends of pelletizing roller 3 are rotatably connected to the push frame 5 via bearings. A motor 7 is fixedly connected to the outer right side of the housing 1. Two bevel gears 8 are also present. The adjustment mechanism is fixedly connected to pelletizing roller 2 and pelletizing roller 3 respectively. The output shaft of motor 7 is fixedly connected to the right side of pelletizing roller 2. The adjustment mechanism also includes a fixed frame 9 fixedly connected to the left side inside the transmission box 6, and a horizontal plate 10 fixedly connected to the outside of the left side of the push frame 5. A spline sleeve 11 is rotatably connected to the middle of the fixed frame 9 via a bearing. A spline shaft 12 is rotatably connected to the middle of the horizontal plate 10 via a bearing. The spline sleeve 11 and the opposite ends of the spline shaft 12 are splinedly connected. The opposite ends of the spline sleeve 11 and the spline shaft 12 are both fixedly connected to bevel gears 13 that mesh with two bevel gears 8. The adjustment mechanism further... The system includes an electric push rod 14 fixedly connected to the outside of the front of the chassis 1, and symmetrical movable holes 15 that are opened through both sides of the chassis 1 near the electric push rod 14. Guide rods 16 are movably connected inside each of the two movable holes 15. The ends of the guide rods 16 are fixedly connected to the back of the push frame 5. Slide grooves 17 are provided at the upper and lower ends of the right side of the transmission box 6. Slider blocks 18 are fixedly connected to the upper and lower ends of both sides of the push frame 5. The two sliders 18 on the left side slide in cooperation with the slide grooves 17. A sliding seat is fixedly connected to the inner wall of the right side of the chassis 1, sliding in cooperation with the two sliders 18 on the right side. A frame 4 is fixedly connected to the chassis. A dust removal mechanism is provided between the frame 4 and the housing 1 on the outer side of the middle left end of the 1. The dust removal mechanism includes a fan 19 fixedly connected to the top of the frame 4, and suction pipes 20 fixedly connected to the upper and lower ends of the left side of the housing 1 respectively. A three-way valve 21 is fixedly connected to one end of the two suction pipes 20 facing each other. A filter cartridge 22 is detachably connected to the input end of the three-way valve 21 away from the two suction pipes 20 and the fan 19 through a flange. A feeding hopper 23 is fixedly connected to the middle of the top of the housing 1. A discharge port 24 is opened at the bottom of the front of the housing 1. A guide plate 25 is fixedly connected between the discharge port 24 and the interior of the housing 1. In this embodiment, the active pelletizing roller is driven by the motor 7, and the transmission chain consisting of bevel gear 8, bevel gear 13, spline sleeve 11 and spline shaft 12 is used to ensure that the active pelletizing roller and the driven pelletizing roller can achieve forced synchronous relative rotation, which fundamentally solves the problem of material slippage and accumulation blockage that easily occurs when the driven roller relies on friction to drive in the prior art.

[0014] Furthermore, by pushing the pusher frame 5 with the electric push rod 14, and cooperating with the sliding guide rod 16 and the movable hole 15, as well as the sliding engagement of the slider 18 and the groove 17, the distance between the two pelletizing rollers can be adjusted.

[0015] Working principle: During processing, the material is fed into the machine housing 1 from the feeding hopper 23 and falls into the gap between pelletizing roller 1 2 and pelletizing roller 2 3. The motor 7 is started to drive pelletizing roller 1 2 to rotate. The bevel gear 1 8 at the left end of pelletizing roller 1 2 transmits power to the spline sleeve 11 through the bevel gear 2 13 in the transmission box 6. The spline sleeve 11 transmits the rotational motion to the spline shaft 12 through the spline connection. The bevel gear 2 13 at the other end of the spline shaft 12 then meshes with the bevel gear 1 8 at the left end of pelletizing roller 2 3, thereby driving pelletizing roller 2 3 to rotate relative to pelletizing roller 1 2. The cutting blades on the two roller surfaces bite into and cut the strip-shaped material into pellets. When it is necessary to adjust the gap between pelletizing roller 1 2 and pelletizing roller 2 3, the electric push rod 14 is started to push or pull the push frame 5. The push frame 5 is guided by the guide rod 16 in the movable hole 15. At the same time, the sliders 18 on both sides of the push frame 5 move in the transmission box 6. The slid slides in the groove 17 and the sliding seat on the inner right side of the casing 1, thereby smoothly changing the distance between the pelletizing roller 2 and the pelletizing roller 3. During the adjustment process, the spline connection between the spline sleeve 11 and the spline shaft 12 allows axial relative displacement but always maintains power transmission. The meshing of the bevel gear 2 13 and the bevel gear 8 also adaptively adjusts with the change of distance. Dust is continuously generated during the pelletizing process and during the falling of the cut pellets. Therefore, the two suction pipes 20 set at the upper and lower ends of the casing 1 can effectively suck up the pelletizing area and the feeding area at the same time. The generated dust and odor are generated by the negative pressure generated by the fan 19, and are collected by the two suction pipes 20 to the three-way valve 21. Then they are drawn into the filter cylinder 22 for filtration and purification. Finally, the clean gas is discharged by the fan 19. The processed plastic pellets fall to the guide plate 25 by gravity. After being guided by the guide plate 25, they are discharged and collected from the discharge port 24.

[0016] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model 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 utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A PP plastic granule processing cutting mechanism, characterized in that: include The machine casing (1) has a pelletizing roller 1 (2) and a pelletizing roller 2 (3) that can be adjusted on the upper part of the casing via an adjustment mechanism. The frame (4) is fixedly connected to the outer side of the middle left end of the chassis (1), and a dust removal mechanism is provided between the frame (4) and the chassis (1).

2. The PP plastic particle processing and cutting mechanism according to claim 1, characterized in that: The adjustment mechanism includes a pusher frame (5) located outside the end of the second pelletizing roller (3) away from the first pelletizing roller (2), a bevel gear (8) rotatably connected to the left side of the housing (1) and the pusher frame (5) via bearings, and a transmission box (6) horizontally fixedly connected to the upper left side of the housing (1). The two ends of the first pelletizing roller (2) are rotatably connected to the housing (1) via bearings, and the two ends of the second pelletizing roller (3) are rotatably connected to the pusher frame (5) via bearings. A motor (7) is fixedly connected to the right side of the housing (1). Two bevel gears (8) are fixedly connected to the first pelletizing roller (2) and the second pelletizing roller (3) respectively. The output shaft of the motor (7) is fixedly connected to the right side of the first pelletizing roller (2).

3. The PP plastic particle processing and cutting mechanism according to claim 2, characterized in that: The adjustment mechanism also includes a fixed frame (9) fixedly connected to the left side of the transmission box (6) and a horizontal plate (10) fixedly connected to the outside of the left side of the push frame (5). A spline sleeve (11) is rotatably connected to the middle of the fixed frame (9) through a bearing, and a spline shaft (12) is rotatably connected to the middle of the horizontal plate (10) through a bearing. The spline sleeve (11) and the spline shaft (12) are spline connected at opposite ends. The opposite ends of the spline sleeve (11) and the spline shaft (12) are both fixedly connected to a bevel gear (13) that meshes with the two bevel gears (8).

4. The PP plastic particle processing and cutting mechanism according to claim 3, characterized in that: The adjustment mechanism further includes an electric push rod (14) fixedly connected to the outside of the front of the chassis (1), and symmetrical movable holes (15) that are opened through the chassis (1) on both sides near the electric push rod (14). Guide rods (16) are movably connected inside the two movable holes (15), and the ends of the guide rods (16) are fixedly connected to the back of the push frame (5).

5. The PP plastic particle processing and cutting mechanism according to claim 2, characterized in that: The transmission box (6) has a sliding groove (17) on the upper and lower right sides. The push frame (5) has a slider (18) fixedly connected to the upper and lower sides. The two sliders (18) on the left side slide in cooperation with the sliding groove (17). A sliding seat that slides in cooperation with the two sliders (18) on the right side is fixedly connected to the inner wall of the right side of the housing (1).

6. The PP plastic particle processing and cutting mechanism according to claim 1, characterized in that: The dust removal mechanism includes a fan (19) fixedly connected to the top of the frame (4) and suction pipes (20) fixedly connected to the upper and lower ends of the left side of the casing (1). A three-way valve (21) is fixedly connected to one end of the two suction pipes (20). A filter cartridge (22) is detachably connected to the input end of the fan (19) of the three-way valve (21) away from the two suction pipes (20) via a flange. A feeding hopper (23) is fixedly connected to the middle of the top of the casing (1). A discharge port (24) is opened at the bottom of the front of the casing (1). A guide plate (25) is fixedly connected between the discharge port (24) and the interior of the casing (1).

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