Pushing mechanism of planetary extruder

Abstract

The utility model relates to the technical field of extruders, and discloses a material pushing mechanism of a planetary extruder, which comprises a support plate, the top of the support plate is fixedly connected with an extrusion cylinder, the output end of one side of the extrusion cylinder is provided with a discharge port, and one end of the inner wall of the extrusion cylinder is meshed with a plurality of planetary extrusion gear rollers. According to the device, through mutual cooperation of the structures, plastic particles can be uniformly and efficiently mixed and conveyed, the phenomena that the layering proportion is not uniform and the like in the heating and extruding process are prevented, and the quality of the plastic particles is improved. And batch production and use are more convenient, and practicability is higher.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, specifically to a feeding mechanism for a planetary extruder. Background Technology

[0002] Planetary extruders are developed based on extruder technology. Extruders are processing equipment widely used in industries such as plastics, rubber, and food. Their main function is to transform solid materials into a continuous and uniform molten state through processes such as heating, plasticizing, and extrusion, and then extrude them through a die. Planetary extruders adopt planetary gear transmission technology, which is a highly efficient transmission method that enables the coordinated movement of multiple gears, thereby improving extrusion efficiency and mixing effect.

[0003] Traditional extruders typically prioritize extrusion efficiency while often limiting mixing efficiency and uniformity. Due to the limited mixing method, plastic granules may not be fully mixed during extrusion, leading to inconsistent product quality. For example, Chinese patent CN205705212U discloses a planetary extruder equipped with a continuous feeding device. This device can thoroughly plasticize the raw material through the powerful extrusion and shearing of the planetary extruder, reducing raw material crystal points and improving product quality. Although this device has many beneficial effects, it still has the following problems: when mixing multiple types of granules, it is easy to cause uneven mixing ratios, resulting in delamination during heated extrusion.

[0004] To address the aforementioned issues, when extruding mixed plastic granules, the internal structure of the mixing and conveying device can be used to uniformly and efficiently mix and convey them, making it easier for mass production. Therefore, we propose a pushing mechanism for a planetary extruder. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a feeding mechanism for a planetary extruder, which solves the aforementioned problems.

[0007] (II) Technical Solution

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a feeding mechanism for a planetary extruder, including a support plate, an extrusion cylinder fixedly connected to the top of the support plate, a discharge port on one side of the extrusion cylinder, a plurality of planetary extrusion gear rollers meshing with one end of the inner wall of the extrusion cylinder, and a central drive gear roller meshing with the output end of the planetary extrusion gear rollers away from the inner wall of the extrusion cylinder, further comprising:

[0009] A mixing and feeding device is fixedly connected to one side of the top of the extrusion cylinder. The mixing and feeding device is equipped with a spiral roller and a second spiral roller. The mixing and feeding device quickly and efficiently mixes and feeds plastic granules through the spiral roller and the second spiral roller, making the plastic raw materials more uniform and stable during the heating and extrusion process, and greatly improving production stability.

[0010] Preferably, one output end of the central drive gear roller passes through the outer wall of one side of the extrusion cylinder, and a servo motor is fixedly connected to one output end of the central drive gear roller, with a support frame fixedly connected to the bottom of the servo motor.

[0011] Preferably, the mixing and conveying device includes a conveying cylinder, a connecting box, a second support frame, a spiral roller, a second spiral roller, a gear, a second gear, and a motor. The conveying cylinder is fixedly connected to one output end of the top of the extrusion cylinder, and the bottom output end of the conveying cylinder passes through the inner wall of the top of the extrusion cylinder. The connecting box is fixedly connected to the top output end of the conveying cylinder, and the second support frame is fixedly connected to the bottom of the connecting box. The spiral roller is movably connected to the inner wall of the second support frame, and the second spiral roller is movably connected to the inner wall of the second support frame near the spiral roller. The output ends of the spiral roller and the second spiral roller pass through the outer wall of the connecting box. The gear is fixedly connected to one output end of the spiral roller, and the second gear is fixedly connected to one output end of the second spiral roller. The gear and the second gear are meshed. The motor is fixedly connected to one top end of the second support frame, and the output end of the motor is fixedly connected to one output end of the spiral roller.

[0012] Preferably, the bottom output end of the feed cylinder is located above the planetary extrusion gear roller.

[0013] Preferably, the mixing and conveying device further includes a universal joint, a third spiral roller, a second universal joint, a fourth spiral roller, a material box, and a second material box. The output end of the spiral roller away from the gear is fixedly connected to the universal joint. The output end of the universal joint away from the spiral roller is fixedly connected to the third spiral roller. The output end of the second spiral roller away from the second gear is fixedly connected to the second universal joint. The output end of the second universal joint away from the second spiral roller is fixedly connected to the fourth spiral roller. The third spiral roller and the fourth spiral roller are located at one end of the inner wall of the conveying cylinder. The material box is fixedly connected to one side of the top of the connecting box. The second material box is fixedly connected to the top of the connecting box near the material box. The bottom output ends of the material box and the second material box penetrate through the top of the inner wall of the connecting box.

[0014] Preferably, the bottom output end of the material box is located directly above the spiral roller, and the bottom output end of the second material box is located directly above the second spiral roller.

[0015] Preferably, a heating column is fixedly connected to one side of the inner wall of the planetary extrusion gear roller.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a feeding mechanism for a planetary extruder, which has the following beneficial effects:

[0018] 1. The feeding mechanism of this planetary extruder, through the design of the spiral roller and the second spiral roller, as well as the third and fourth spiral rollers connected by universal joints, achieves multi-directional and efficient mixing of plastic particles, ensuring the uniformity and stability of plastic raw materials during the heating and extrusion process, and improving product quality.

[0019] 2. The feeding mechanism of this planetary extruder adopts a planetary gear transmission system, which drives multiple planetary extrusion gear rollers to rotate through a central transmission gear roller, thereby realizing a highly efficient extrusion process and improving production efficiency and extrusion effect.

[0020] 3. The feeding mechanism of this planetary extruder and the heating column set on the inner wall of the planetary extrusion gear roller can accurately heat the plastic particles to ensure that the plastic reaches the ideal melting state, while improving the temperature control accuracy and ensuring the stability of the extruded products. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a side view of the structure of this utility model;

[0023] Figure 3 This is a cross-sectional view of the present invention;

[0024] Figure 4 This is a schematic diagram of the mixing and conveying device of this utility model.

[0025] In the diagram: 1. Support plate; 2. Extrusion cylinder; 3. Discharge port; 4. Planetary extrusion gear roller; 5. Central drive gear roller; 6. Servo motor; 7. Support frame; 8. Feeding cylinder; 9. Connecting box; 10. Second support frame; 11. Spiral roller; 12. Second spiral roller; 13. Gear; 14. Second gear; 15. Motor; 16. Universal joint; 17. Third spiral roller; 18. Second universal joint; 19. Fourth spiral roller; 20. Material box; 21. Second material box; 22. Heating column. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-4 A feeding mechanism for a planetary extruder includes a support plate 1, an extrusion cylinder 2 fixedly connected to the top of the support plate 1, a discharge port 3 on one side of the extrusion cylinder 2, a plurality of planetary extrusion gear rollers 4 meshing with one end of the inner wall of the extrusion cylinder 2, and a central drive gear roller 5 meshing with the output end of the planetary extrusion gear rollers 4 away from the inner wall of the extrusion cylinder 2. The mechanism also includes:

[0028] The mixing and conveying device is fixedly connected to one side of the top of the extrusion cylinder 2. The mixing and conveying device is equipped with a spiral roller 11 and a second spiral roller 12. The mixing and conveying device quickly and efficiently mixes and conveys plastic granules through the spiral roller 11 and the second spiral roller 12, making the plastic raw materials more uniform and stable during the heating and extrusion process, and greatly improving the production stability.

[0029] Furthermore, one output end of the central drive gear roller 5 passes through the outer wall of one side of the extrusion cylinder 2, and a servo motor 6 is fixedly connected to one output end of the central drive gear roller 5. A support frame 7 is fixedly connected to the bottom of the servo motor 6.

[0030] Furthermore, the mixing and conveying device includes a conveying cylinder 8, a connecting box 9, a second support frame 10, a spiral roller 11, a second spiral roller 12, a gear 13, a second gear 14, and a motor 15. The conveying cylinder 8 is fixedly connected to one output end of the top side of the extrusion cylinder 2, and the bottom output end of the conveying cylinder 8 penetrates through the inner wall of the top of the extrusion cylinder 2. The connecting box 9 is fixedly connected to the top output end of the conveying cylinder 8, and the second support frame 10 is fixedly connected to the bottom of the connecting box 9. The spiral roller 11 is movably connected to the inner wall of the second support frame 10. A second spiral roller 12 is movably connected to the inner wall of the second support frame 10 near the spiral roller 11. The output ends of the spiral roller 11 and the second spiral roller 12 pass through the outer wall of the connecting box 9. A gear 13 is fixedly connected to the output end of the spiral roller 11, and a second gear 14 is fixedly connected to the output end of the second spiral roller 12. The gear 13 and the second gear 14 are meshed. A motor 15 is fixedly connected to the top end of the second support frame 10, and the output end of the motor 15 is fixedly connected to the output end of the spiral roller 11.

[0031] Furthermore, the bottom output end of the feed cylinder 8 is located above the planetary extrusion gear roller 4.

[0032] Furthermore, the mixing and conveying device also includes a universal joint 16, a third spiral roller 17, a second universal joint 18, a fourth spiral roller 19, a material box 20, and a second material box 21. The output end of the spiral roller 11 away from the gear 13 is fixedly connected to the universal joint 16. The output end of the universal joint 16 away from the spiral roller 11 is fixedly connected to the third spiral roller 17. The output end of the second spiral roller 12 away from the second gear 14 is fixedly connected to the second universal joint 18. The output end of the second universal joint 18 away from the second spiral roller 12 is fixedly connected to the fourth spiral roller 19. The third spiral roller 17 and the fourth spiral roller 19 are located at one end of the inner wall of the conveying cylinder 8. The material box 20 is fixedly connected to one side of the top of the connecting box 9. The second material box 21 is fixedly connected to the top of the connecting box 9 near the material box 20. The bottom output ends of the material boxes 20 and the second material box 21 penetrate through the top of the inner wall of the connecting box 9.

[0033] Furthermore, the bottom output end of the material box 20 is located directly above the spiral roller 11, and the bottom output end of the second material box 21 is located directly above the second spiral roller 12.

[0034] Furthermore, a heating column 22 is fixedly connected to one side of the inner wall of the planetary extrusion gear roller 4 to heat the plastic particles, soften them, and make them easier to extrude.

[0035] Working principle: First, plastic granules enter the mixing and conveying device through the material bin 20 and the second material bin 21. The motor 15 drives the spiral roller 11 to rotate. The spiral roller 11 drives the second spiral roller 12 to rotate through the meshing connection of the gear 13 and the second gear 14. The spiral roller 11 and the second spiral roller 12 quickly and efficiently mix the plastic granules in the conveying cylinder 8, ensuring that the plastic raw material is more uniform and stable during the heating and extrusion process. The universal joint 16 and the second universal joint 18 are respectively connected to the third spiral roller 17 and the fourth spiral roller 19 to further increase the mixing effect and convey the mixed plastic granules into the extrusion cylinder 2. The mixed plastic granules fall into the planetary extruder. Above the gear roller 4, the plastic granules are captured by the planetary extrusion gear roller 4 and the extrusion process begins. The planetary extrusion gear roller 4 is meshed with one end of the inner wall of the extrusion cylinder 2 and is also meshed with the central drive gear roller 5 to form a planetary gear transmission system. The servo motor 6 is fixed by the support frame 7 and drives the central drive gear roller 5 to rotate, which in turn drives the planetary extrusion gear roller 4 to rotate and extrude the plastic granules. The heating column 22 is fixed on one side of the inner wall of the planetary extrusion gear roller 4 to heat the plastic granules, making them softer and easier to extrude. Under the extrusion action of the planetary extrusion gear roller 4, the plastic is pushed to the output end of the extrusion cylinder 2 and finally extruded through the discharge port 3.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feeding mechanism for a planetary extruder, comprising a support plate (1), characterized in that: The top of the support plate (1) is fixedly connected to an extrusion cylinder (2), and an outlet (3) is provided at one output end of the extrusion cylinder (2). A plurality of planetary extrusion gear rollers (4) are meshed with one end of the inner wall of the extrusion cylinder (2), and a central drive gear roller (5) is meshed with the output end of the planetary extrusion gear rollers (4) away from the inner wall of the extrusion cylinder (2). The feature is that it further includes: The mixing and conveying device is fixedly connected to one side of the top of the extrusion cylinder (2). The mixing and conveying device is equipped with a spiral roller (11) and a second spiral roller (12). The mixing and conveying device performs fast and efficient mixing and conveying of plastic particles through the spiral roller (11) and the second spiral roller (12).

2. The feeding mechanism of a planetary extruder according to claim 1, characterized in that: The output end of the central drive gear roller (5) extends through the outer wall of one side of the extrusion cylinder (2). A servo motor (6) is fixedly connected to the output end of the central drive gear roller (5). A support frame (7) is fixedly connected to the bottom of the servo motor (6).

3. The feeding mechanism of a planetary extruder according to claim 1, characterized in that: The mixing and conveying device includes a conveying cylinder (8), a connecting box (9), a second support frame (10), a spiral roller (11), and a second spiral roller. (12), gear (13), second gear (14), motor (15), the top output end of the extrusion cylinder (2) is fixedly connected to a feeding cylinder (8), and the bottom output end of the feeding cylinder (8) passes through the top inner wall of the extrusion cylinder (2), the top output end of the feeding cylinder (8) is fixedly connected to a connecting box (9), the bottom of the connecting box (9) is fixedly connected to a second support frame (10), the inner wall end of the second support frame (10) is movably connected to a spiral roller (11), the second support frame (10) A second spiral roller (12) is movably connected to the inner wall of one end of the spiral roller (11), and the output ends of the spiral roller (11) and the second spiral roller (12) pass through the outer wall of one end of the connecting box (9). A gear (13) is fixedly connected to the output end of the spiral roller (11), and a second gear (14) is fixedly connected to the output end of the second spiral roller (12). The gear (13) and the second gear (14) are meshed. A motor (15) is fixedly connected to the top end of the second support frame (10), and the output end of the motor (15) is fixedly connected to the output end of the spiral roller (11).

4. The feeding mechanism of a planetary extruder according to claim 3, characterized in that: The bottom output end of the feed cylinder (8) is located above the planetary extrusion gear roller (4).

5. The feeding mechanism of a planetary extruder according to claim 3, characterized in that: The mixing conveyor The device also includes a universal joint (16), a third spiral roller (17), a second universal joint (18), and a fourth spiral roller (19). Material box (20), second material box (21), the output end of the spiral roller (11) away from the gear (13) is fixedly connected to a universal joint (16), the output end of the universal joint (16) away from the spiral roller (11) is fixedly connected to a third spiral roller (17), the output end of the second spiral roller (12) away from the second gear (14) is fixedly connected to a second universal joint (18), the output end of the second universal joint (18) away from the second spiral roller (12) is fixedly connected to a fourth spiral roller (19), and the third spiral roller (17) and the fourth spiral roller (19) are located at one end of the inner wall of the conveying cylinder (8), the top side of the connecting box (9) is fixedly connected to the material box (20), the top side of the connecting box (9) near the material box (20) is fixedly connected to the second material box (21), and the bottom output ends of the material box (20) and the second material box (21) penetrate through the top of the inner wall of the connecting box (9).

6. The feeding mechanism of a planetary extruder according to claim 5, characterized in that: The bottom output end of the material box (20) is located directly above the spiral roller (11), and the bottom output end of the second material box (21) is located directly above the second spiral roller (12).

7. The feeding mechanism of a planetary extruder according to claim 1, characterized in that: A heating column (22) is fixedly connected to one side of the inner wall of the planetary extrusion gear roller (4).

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