A biodegradable plastic particle molding machine
By designing planetary gears and a spiral guide mechanism, combined with water-cooled cutting, the problems of uneven plastic raw material size and easy clogging in existing plastic pelletizers have been solved, achieving highly continuous and uniform plastic particle generation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN YUANHAI PLASTIC PROD
- Filing Date
- 2025-09-05
- Publication Date
- 2026-07-31
AI Technical Summary
Existing plastic granulators suffer from uneven plastic raw material size and are prone to clogging during cutting and cooling, resulting in poor continuity.
By employing a planetary gear structure and a helical guide mechanism, combined with water cooling and a cutting device, the molten plastic is rapidly cooled and cut to form uniform plastic particles.
It improves the continuity of plastic particle generation, avoids clogging, and ensures uniform particle size.
Smart Images
Figure CN224575951U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of biodegradable plastic particle production technology, specifically a biodegradable plastic particle molding machine. Background Technology
[0002] Degradable plastics refer to a class of plastics whose products can meet the requirements of use, whose performance remains unchanged during the shelf life, and which can degrade into substances that are harmless to the environment under natural environmental conditions after use. When producing degradable plastic products, it is necessary to produce degradable plastic raw materials into particles with uniform particle size to facilitate subsequent production operations. In the prior art, patent CN202022444080.3 discloses a plastic granulator, including a four-legged support frame, an extrusion chamber, a pressing block, a heating chamber, a discharge chamber, and a pallet. The extrusion chamber is fixedly installed at the top of the four-legged support frame, the pressing block is slidably connected inside the extrusion chamber, the heating chamber is fixedly connected to the bottom of the extrusion chamber, the discharge chamber is fixedly connected to the bottom of the heating chamber, a baffle is inserted into one side of the discharge chamber, and a cutter is fixedly installed at the output end of the swing motor. The aforementioned plastic pelletizing machine has some problems in actual use. For example, if the plastic raw material is directly cut from a cooled and molten state, the cut molten beads are not uniform in size, and the molten plastic raw material may stick to the cutter during cutting, which can easily cause blockage after long-term use and result in low continuity. Therefore, we propose a biodegradable plastic pellet forming machine. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a biodegradable plastic particle molding machine that has good continuity and is not easy to clog, and produces particles of uniform size, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a biodegradable plastic particle molding machine, comprising a worktable, a conveying mechanism, and a continuous pelletizing mechanism; The worktable has a molten conveying channel fixedly connected to its upper side, and an extrusion die is provided on the right side of the molten conveying channel; Conveying mechanism: It is located inside the molten conveying channel; Continuous pelletizing mechanism: It includes a discharge cylinder, a main rotating column, spiral guide strips, cutting heads, cutting gears, a right-side sealing cylinder, a toothed ring, and an outer sealing plate. The discharge cylinder is fixedly connected to the right side of the extrusion die. The right side of the discharge cylinder is fixedly connected to the right-side sealing cylinder. The right side of the right-side sealing cylinder is fixedly connected to the right side of the outer sealing plate. The right side of the inner arc surface of the right-side sealing cylinder is fixedly connected to the right-side toothed ring. The left side of the inner arc surface of the right-side sealing cylinder is rotatably connected to the main rotating column. The left side of the outer arc surface of the main rotating column is provided with evenly distributed spiral guide strips. The inside of the main rotating column is rotatably connected to evenly distributed rotating rods. The left end of each rotating rod is fixedly connected to a cutting head, and the right end of each rotating rod is fixedly connected to a cutting gear. The eight cutting gears are respectively meshed with a toothed ring, which provides good continuity and is not easy to clog, and produces particles of uniform size.
[0005] Furthermore, a controller is provided on the front side of the workbench, and the input terminal of the controller is electrically connected to an external power source to control the normal operation of each electrical appliance.
[0006] Furthermore, the continuous pelletizing mechanism also includes a guiding component, which includes an inlet pipe and an outlet pipe. The inlet pipe is evenly arranged on the left side of the discharge cylinder, and the inlet end of the inlet pipe is connected to an external water supply device. The right side of the discharge cylinder is provided with an outlet pipe, which is connected to an external pellet drying device to realize the function of water circulation.
[0007] Furthermore, a second motor is provided on the right side of the upper surface of the workbench. The output shaft of the second motor is fixedly connected to the right end of the main rotating column, and the input end of the second motor is electrically connected to the output end of the controller to provide power for cutting and material discharge.
[0008] Furthermore, the conveying mechanism includes a conveying screw, a mixing section, a gear mounting box, a drive gear, a transmission gear, and a first motor. The conveying screws are symmetrically rotated and connected to the interior of the molten conveying channel. The gear mounting box is fixedly connected to the left end of the molten conveying channel. The mixing section is located on the right side of the outer arc surface of the two conveying screws. Transmission gears are fixedly connected to the left ends of the two conveying screws respectively. The first motor is fixedly connected to the left side of the gear mounting box. The output shaft of the first motor is fixedly connected to the drive gear. The two transmission gears and one drive gear are meshed and connected. Both transmission gears and one drive gear are located inside the gear mounting box. The input end of the first motor is electrically connected to the output end of the controller to realize the material conveying function.
[0009] Furthermore, the inner wall of the melting conveying channel is provided with a uniformly distributed heating jacket, and the oil inlet and outlet of the heating jacket are respectively connected to an external heating circulation device to realize the heating function.
[0010] Furthermore, a feeding hopper is provided on the left side of the upper surface of the melting conveying channel to realize the feeding function.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This biodegradable plastic particle molding machine has the following advantages: Employing a planetary gear structure and a spiral guide mechanism, the molten biodegradable plastic raw material is rapidly cut into plastic particles upon cooling and then quickly discharged to the outside of the equipment along the spiral water flow. The molten plastic raw material can be cooled and molded before being rapidly cut, without sticking to the cutter. This ensures good continuity and prevents clogging, resulting in uniformly sized particles. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present invention in an explosive state; Figure 3 This is a schematic diagram of the continuous pelletizing mechanism of this utility model.
[0013] In the diagram: 1. Workbench, 2. Melting conveying channel, 3. Conveying mechanism, 31. Conveying screw, 32. Mixing section, 33. Gear mounting box, 34. Drive gear, 35. Transmission gear, 36. First motor, 4. Heating jacket, 5. Extrusion die head, 6. Continuous pelletizing mechanism, 61. Discharge cylinder, 62. Main rotating column, 63. Spiral guide strip, 64. Cutting head, 65. Cutting gear, 66. Right side sealing cylinder, 67. Gear ring, 68. Outer sealing plate, 69. Guide assembly, 691. Water inlet pipe, 692. Water outlet pipe, 7. Second motor, 8. Feed hopper, 9. Controller. Detailed Implementation
[0014] 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.
[0015] Please see Figure 1-3 This embodiment provides a technical solution: a biodegradable plastic particle molding machine, including a worktable 1, a conveying mechanism 3 and a continuous pelletizing mechanism 6; Workbench 1: A melt conveying channel 2 is fixedly connected to its upper side. An extrusion die head 5 is provided on the right side of the melt conveying channel 2. A controller 9 is provided on the front side of the workbench 1. The input end of the controller 9 is electrically connected to an external power source. A heating jacket 4 is evenly distributed on the inner wall of the melt conveying channel 2. The oil inlet and oil outlet of the heating jacket 4 are respectively connected to an external heating circulation device. A feed hopper 8 is provided on the left side of the upper surface of the melt conveying channel 2. Conveying mechanism 3: Located inside the melt conveying channel 2, the conveying mechanism 3 includes conveying screws 31, mixing section 32, gear mounting box 33, drive gear 34, transmission gear 35, and a first motor 36. The conveying screws 31 are symmetrically connected to the inside of the melt conveying channel 2. The gear mounting box 33 is fixedly connected to the left end of the melt conveying channel 2. The mixing section 32 is located to the right of the outer arc surface of the two conveying screws 31. The transmission gear 35 is fixedly connected to the left end of the two conveying screws 31 respectively. The first motor 36 is fixedly connected to the left side of the gear mounting box 33. The output shaft of the first motor 36 is fixedly connected to the drive gear 34. The two transmission gears 35 are connected to a... The drive gear 34 is meshed with the two transmission gears 35 and the drive gear 34, all located inside the gear mounting box 33. The input end of the first motor 36 is electrically connected to the output end of the controller 9. When the molding machine is needed, the external heating circulation equipment can be adjusted to circulate and heat the temperature inside the jacket 4, thereby heating the temperature inside the melting conveying channel 2. At this time, the controller 9 can be adjusted, the first motor 36 will run, and the output shaft of the first motor 36 will rotate, thereby driving the two transmission gears 35 to rotate synchronously through the drive gear 34, which in turn drives the two conveying screws 31 to rotate synchronously. At this time, the pre-mixed biodegradable plastic raw material can be fed into the feed hopper 8. Inside the melting conveying channel 2, the two sets of conveying screws 31 rotate synchronously to achieve material conveying, shearing, and mixing. The melting conveying channel 2 and the conveying screws 31 cooperate to form a "closed chamber." The heating jacket 4 heats the temperature inside the closed chamber. When the two conveying screws 31 rotate synchronously, the screw edges of the conveying screws 31 push the material forward along the "screw groove." Because the gap between the conveying screws 31 and the inner wall of the melting conveying channel 2 is extremely small, the biodegradable plastic raw material will not slip between the screw groove and the barrel, achieving "forced conveying." The temperature in this section is relatively low. After the material enters the mixing section 32, the depth of the screw groove in the mixing section 32 gradually becomes shallower (from the deep screw groove in the feeding section to the shallow screw groove in the homogenization section). In the mixing section 32, the material is forcibly compressed, its volume decreases, and its density increases. The temperature in this section rises to the melting point of the biodegradable plastic raw material, providing basic heat energy for melting. At this time, the molten material continues to move to the right as the screw 31 rotates. When it reaches the right side, the screw channel of the mixing section 32 is a "shallow screw channel". The material filling rate in the screw channel is close to 100%. When the molten material rotates with the screw 31, it generates a "strong shearing and stirring effect" on the melt. The "meshing zone" of the co-rotating screws will repeatedly "divide and merge" the melt and continue to move to the right, pressing the high-pressure uniform melt into the extrusion die 5. The high-pressure uniform melt will be extruded from the small hole on the extrusion die 5. Continuous pelletizing mechanism 6: It includes a discharge cylinder 61, a main rotating column 62, a spiral guide strip 63, a cutting head 64, a cutting gear 65, a right-side sealing cylinder 66, a gear ring 67, and an outer sealing plate 68. The discharge cylinder 61 is fixedly connected to the right side of the extrusion die head 5. The right-side sealing cylinder 66 is fixedly connected to the right side of the discharge cylinder 61. The outer sealing plate 68 is fixedly connected to the right side of the right-side sealing cylinder 66. The gear ring 67 is fixedly connected to the right side of the inner arc surface of the right-side sealing cylinder 66. The main rotating column 62 is rotatably connected to the left side of the inner arc surface of the right-side sealing cylinder 66 (a waterproof bearing can be used here for waterproofing; specifically, the inner ring surface of the waterproof bearing is fixed to the right side of the outer arc surface of the main rotating column 62, while the outer ring surface of the waterproof bearing is fixed to the right-side sealing cylinder 66). The left side of the inner arc surface of the cylinder 66 is waterproofed to prevent water from flowing to the right side of the right sealing cylinder 66. The left side of the outer arc surface of the main rotating column 62 is provided with evenly distributed spiral guide strips 63. The main rotating column 62 is rotatably connected to evenly distributed rotating rods. Cutting blades 64 are fixedly connected to the left end of each rotating rod, and cutting gears 65 are fixedly connected to the right end of each rotating rod. Eight cutting gears 65 are respectively meshed with a toothed ring 67. The continuous pelletizing mechanism 6 also includes a guide assembly 69, which includes an inlet pipe 691 and an outlet pipe 692. The inlet pipe 691 is evenly distributed on the left side of the discharge cylinder 61, and its inlet end is connected to an external water supply device. The right side of the discharge cylinder 61 is provided with... The water outlet pipe 692 is connected to an external particle drying device. A second motor 7 is located on the right side of the upper surface of the workbench 1. The output shaft of the second motor 7 is fixedly connected to the right end of the main rotating column 62. The input end of the second motor 7 is electrically connected to the output end of the controller 9. At this time, it is necessary to adjust the external water supply device. Cold water enters the discharge cylinder 61 from the three water inlet pipes 691. At the same time, the controller 9 is adjusted, the second motor 7 runs, and the output shaft of the second motor 7 rotates, thereby driving the main rotating column 62 to rotate. During the rotation of the main rotating column 62, the spiral guide strip 63 on the main rotating column 62 rotates to form a spiral water flow, forcing the water flow to the right. The water flow moves to the right and is discharged along the water outlet pipe 692. Inside the external pellet drying equipment, as the main rotating column 62 rotates, the cutting gear 65 maintains a constant meshing relationship with the gear ring 67. As the main rotating column 62 rotates, the cutting gear 65 itself also rotates at high speed, which in turn drives the cutting head 64 to rotate via the rotating rod. While the cutting head 64 rotates on its own axis, it also rotates along the central axis of the main rotating column 62. At this time, the molten raw material extruded from the small hole of the extrusion die 5 comes into contact with the cooling water and is rapidly cooled. It is then cut by the rotating cutting head 64 into plastic particles. The plastic particles are discharged from the outlet pipe 692 along the water flow direction to the external pellet drying equipment of the device, where the plastic particles in the water flow are filtered out and dried to generate biodegradable plastic particles.
[0016] The working principle of the biodegradable plastic particle molding machine provided by this utility model is as follows: When the molding machine is needed, the external heating circulation equipment can be adjusted to circulate and heat the temperature inside the jacket 4, thereby heating the temperature inside the melting conveying channel 2. At this time, the controller 9 can be adjusted to start the first motor 36. The output shaft of the first motor 36 rotates, which in turn drives the two transmission gears 35 to rotate synchronously through the drive gear 34, thereby driving the two conveying screws 31 to rotate synchronously. At this time, the pre-mixed biodegradable plastic raw material can be fed into the melting conveying channel 2 through the feed hopper 8. The two sets of conveying screws 31 rotating synchronously realize material conveying, shearing and mixing. The melting conveying channel 2 and the conveying screws 31 cooperate to form a "closed cavity". The heating jacket 4 heats the enclosed chamber. When the two conveying screws 31 rotate synchronously, the screw edges of the conveying screws 31 push the material forward along the "screw groove". Because the gap between the conveying screws 31 and the inner wall of the molten conveying channel 2 is extremely small, the biodegradable plastic raw material will not slip between the screw groove and the barrel, achieving "forced conveying". The temperature in this section is relatively low. After the material enters the mixing section 32, the depth of the screw groove in the mixing section 32 gradually becomes shallower (from the deep screw groove in the feeding section to the shallow screw groove in the homogenization section). The material is forcibly compressed, its volume decreases, and its density increases. The temperature in this section rises to the melting point of the biodegradable plastic raw material, providing basic heat energy for melting. At this time, the molten material continues to move to the right as the screws 31 rotate, moving to the right side. At this time, the screw groove of the mixing section 32 is... In the "shallow screw channel," the material filling rate within the screw channel is close to 100%. At this point, the molten material, as the screw 31 rotates, generates a strong shearing and stirring effect on the melt. The "meshing zone" of the co-rotating screws repeatedly "divides and merges" the melt and continues to move to the right, pressing the high-pressure, uniform melt into the extrusion die 5. The high-pressure, uniform melt is extruded from the small holes on the extrusion die 5. At this time, it is necessary to regulate the external water supply equipment. Cold water enters the discharge cylinder 61 from the three inlet pipes 691. Simultaneously, the controller 9 is regulated, and the second motor 7 operates. The output shaft of the second motor 7 rotates, thereby driving the main rotating column 62 to rotate. During the rotation of the main rotating column 62, the spiral guide strip 63 on the main rotating column 62 rotates to form a spiral water flow, forcing the water flow to the right. The water flows to the right and is discharged into the external particle drying equipment through the outlet pipe 692. At the same time, as the main rotating column 62 rotates, the cutting gear 65 maintains a constant meshing relationship with the gear ring 67. As the main rotating column 62 rotates, the cutting gear 65 itself also rotates at high speed, which in turn drives the cutting head 64 to rotate through the rotating rod. The cutting head 64 rotates along the central axis of the main rotating column 62 while rotating on its own. At this time, the molten raw material extruded from the small hole of the extrusion die 5 comes into contact with the cooling water and is quickly cooled. It is then cut by the rotating cutting head 64 into plastic particles. The plastic particles are discharged from the outlet pipe 692 along the water flow direction to the external particle drying equipment of the device, where the plastic particles in the water flow are filtered out and dried to generate biodegradable plastic particles.
[0017] It is worth noting that the core chip of the controller 9 disclosed in the above embodiments is a microcontroller, specifically the STC12C5A60S2. The first motor 36 and the second motor 7 can be freely configured according to the actual application scenario. It is recommended that the first motor 36 be a YS series three-phase asynchronous motor, and the second motor 7 be a CH22-100-60S model geared motor. The microcontroller or PLC controller controls the operation of the first motor 36 and the second motor 7 using methods commonly used in the prior art.
[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A degradable plastic pellet forming machine characterized by: It includes a workbench (1), a conveying mechanism (3), and a continuous pelletizing mechanism (6); Workbench (1): A melt conveying channel (2) is fixedly connected to its upper side, and an extrusion die (5) is provided on the right side of the melt conveying channel (2). Conveying mechanism (3): It is located inside the melt conveying channel (2); Continuous pelletizing mechanism (6): It includes a discharge cylinder (61), a main rotating column (62), a spiral guide strip (63), a cutting head (64), a cutting gear (65), a right-side sealing cylinder (66), a gear ring (67), and an outer sealing plate (68). The discharge cylinder (61) is fixedly connected to the right side of the extrusion die (5). The right-side sealing cylinder (66) is fixedly connected to the right side of the discharge cylinder (61). The outer sealing plate (68) is fixedly connected to the right side of the right-side sealing cylinder (66). The inner side of the right-side sealing cylinder (66) is... A toothed ring (67) is fixedly connected to the right side of the arc surface. A main rotating column (62) is rotatably connected to the left side of the inner arc surface of the right sealing cylinder (66). A spiral guide bar (63) is evenly distributed on the left side of the outer arc surface of the main rotating column (62). A rotating rod is evenly distributed inside the main rotating column (62). A cutting head (64) is fixedly connected to the left end of the rotating rod. A cutting gear (65) is fixedly connected to the right end of the rotating rod. Eight cutting gears (65) are meshed with a toothed ring (67) respectively.
2. A degradable plastic pellet forming machine as claimed in claim 1, wherein: The front side of the workbench (1) is provided with a controller (9), and the input end of the controller (9) is electrically connected to an external power source.
3. A degradable plastic pellet forming machine as claimed in claim 1, wherein: The continuous pelletizing mechanism (6) also includes a guide assembly (69), which includes an inlet pipe (691) and an outlet pipe (692). The inlet pipe (691) is evenly arranged on the left side of the discharge cylinder (61). The inlet end of the inlet pipe (691) is connected to an external water supply device. The right side of the discharge cylinder (61) is provided with an outlet pipe (692), which is connected to an external pellet drying device.
4. A degradable plastic pellet forming machine as claimed in claim 2, wherein: The upper surface of the workbench (1) is provided with a second motor (7) on the right side. The output shaft of the second motor (7) is fixedly connected to the right end of the main rotating column (62). The input end of the second motor (7) is electrically connected to the output end of the controller (9).
5. The degradable plastic pellet molding machine according to claim 1, wherein: The conveying mechanism (3) includes a conveying screw (31), a mixing section (32), a gear mounting box (33), a drive gear (34), a transmission gear (35), and a first motor (36). The conveying screw (31) is symmetrically rotated and connected to the inside of the melt conveying channel (2). The gear mounting box (33) is fixedly connected to the left end of the melt conveying channel (2). The mixing section (32) is located on the right side of the outer arc surface of the two conveying screws (31). The transmission gear (35) is fixedly connected to the left end of the two conveying screws (31). The first motor (36) is fixedly connected to the left side of the gear mounting box (33). The output shaft of the first motor (36) is fixedly connected to the drive gear (34). The two transmission gears (35) are meshed with one drive gear (34). The two transmission gears (35) and one drive gear (34) are both located inside the gear mounting box (33). The input end of the first motor (36) is electrically connected to the output end of the controller (9).
6. A degradable plastic pellet forming machine as claimed in claim 1, wherein: The inner wall of the melt conveying channel (2) is provided with a uniformly distributed heating jacket (4), and the oil inlet and oil outlet of the heating jacket (4) are respectively connected to an external heating circulation device.
7. A degradable plastic pellet forming machine as claimed in claim 1, wherein: The upper surface of the melting conveying channel (2) is provided with a feed hopper (8) on the left side.