Micro-cone extruder
By setting up a hierarchical speed control that can be independently disassembled and assembled in different areas of the screw of the microcone extruder, combined with the transmission mechanism of the main drive mechanism and the secondary drive mechanism, the problems of low efficiency and material degradation of traditional extruders when dealing with complex fluids are solved, efficient mixing and extrusion are achieved, and energy consumption and spare parts costs are reduced.
Patent Information
- Application Number
- CN202510588689.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2025-06-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When traditional extruders deal with complex fluids with high viscosity, heat sensitive or micro-nano fillers, they face problems such as low mixing efficiency, uneven shear distribution, and local overheating leading to material degradation. The single drive mode of the screw structure is difficult to adapt to the production needs of complex formulas or multiple varieties, resulting in material degradation or uneven mixing.
A microcone extruder is designed. By setting up a hierarchical speed control that can be independently disassembled and assembled in different areas of the screw, a transmission mechanism combining the main drive mechanism and the secondary drive mechanism is adopted to achieve independent speed control in different sections. The low-speed operation of the feed section prevents material blockage, while the high-speed operation of the melting section, the mixing section, and the extrusion section improves efficiency.
Through the matching of segmented drives, the overall screws are avoided to operate at a single high power, reduce ineffective energy consumption, and achieve efficient mixing and extrusion. Through the design of removable mixing and extrusion sections, spare parts costs are saved and has excellent flexibility and expansion.
Smart Images
Figure CN120134583A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of extruders, and more particularly to a micro-cone extruder. Background Art
[0002] The micro-cone extruder is a new type of processing equipment developed for the precise extrusion requirements in the fields of polymer materials, nanocomposites, and biomedicine. Traditional extruders mostly adopt a cylindrical screw structure. When processing complex fluids with high viscosity, heat sensitivity, or containing micro-nano fillers, they often face problems such as low mixing efficiency, uneven shear distribution, and material degradation caused by local overheating. With the development of micro-nano manufacturing and functional materials, the market's demand for high-precision and low-damage continuous extrusion molding technology is becoming increasingly urgent, driving the innovation of the screw structure; Most of the existing screw structures for extrusion are of an integral fixed form, and the rotation speeds of each zone (such as the feeding zone, melting zone, mixing zone, and extrusion zone) are the same. The single drive mode makes it impossible to independently optimize the process parameters of each section, and it is difficult to adapt to the production requirements of complex formulations or multiple varieties, which may cause material degradation or uneven mixing; At the same time, the front section of the screw (especially the extrusion end) has a short service life due to high temperature, high pressure, and high wear. After wear, the whole needs to be replaced, which is costly and time-consuming; frequent disassembly and assembly of the transmission system may introduce calibration errors, affecting the equipment accuracy. And in actual production, the whole screw needs to be replaced according to different materials. However, in some cases, only some areas are different between different screws, and the integral structure cannot be flexibly assembled according to the needs, resulting in a relatively high overall cost and poor flexibility in use; To solve the above problems, a micro-cone extruder is proposed in this application. Summary of the Invention
[0003] The purpose of the present invention is to provide a micro-cone extruder, which improves the production efficiency by varying the speeds of different regions of the screw, and at the same time sets different regions of the screw to be independently detachable and allows matching assembly to solve the problems in the prior art.
[0004] The purpose of the present invention can be achieved by the following technical solutions: The micro-cone extruder includes a frame. A micro-cone extrusion barrel is installed at the upper end of the frame. Two screws are installed inside the micro-cone extrusion barrel through a conical channel. A feeding port is provided on one side of the upper end of the micro-cone extrusion barrel, and an extrusion head is provided at the front end of the micro-cone extrusion barrel. It further includes: a transmission mechanism installed at one end of the screw, and the other end of the transmission mechanism is connected to the main drive mechanism and the secondary drive mechanism at the same time; The screw includes a feeding section and a melting section distributed along the axial direction. The main drive mechanism can drive the feeding section and the melting section to rotate at the same speed through the transmission mechanism, and the secondary drive mechanism can drive the melting section to rotate independently through the transmission mechanism; The screw further includes a mixing section and an extrusion section that are provided at one end of the melting section and are detachable, supporting the replacement of individual worn components, saving spare part costs, and being mutually assembled to meet diverse production requirements; The drive mechanism includes a first external drive wheel and a second external drive wheel that are connected to and mesh with two feeding sections, and a first internal drive wheel and a second internal drive wheel that are connected to and mesh with two melting sections. One end of the two melting sections is further provided with a first high-speed wheel that is driven by a secondary drive mechanism and drives the melting section to rotate through meshing. A hierarchical speed control of low speed in the feeding section / high speed in the processing section is adopted, which is achieved through independent drive. The low-speed operation of the feeding section prevents material blockage, and the high-speed operation of the melting / mixing / extrusion section improves efficiency, effectively reducing ineffective energy consumption.
[0005] The feeding section is fixed to the external drive wheel through a connecting sleeve, and the melting section is fixed to the internal drive wheel through a connecting rod. A circular hole that can pass through the connecting rod is provided through the inside of the feeding section and the connecting sleeve; In the above technical solution, the cooperation among the connecting sleeve, the circular hole, and the connecting rod divides the feeding section and the melting section into two coaxial transmission paths.
[0006] A rectangular long rod is fixed to one end of the extrusion section. A rectangular hole for the rectangular long rod to pass through is provided through the mixing section. A rectangular groove for inserting the rectangular long rod is provided at the end of the connecting rod facing away from the melting section; In the above technical solution, the extrusion section and the mixing section can be synchronously connected in series to the melting section through a rectangular long rod, which is more convenient for installation and disassembly. The axial insertion of the rectangular structure can ensure the circumferential connection stability and avoid mutual rotation after axial insertion.
[0007] A second locking groove is provided in the rectangular long rod, and a sliding locking block is provided in the second locking groove. A first locking groove is provided in the rectangular groove to cooperate with the locking block; In the above technical solution, the second locking groove and the locking block adopt a simple split structure, and at the same time, it does not affect the axial insertion between the rectangular long rod and the rectangular groove. The cooperation among the first locking groove, the second locking groove, and the locking block ensures the connection strength among the mixing section, the extrusion section, and the melting section.
[0008] A through screw hole is provided in the locking block. A through hole penetrating the rectangular groove is provided in the feeding section along the radial direction. When the locking bolt passes through the through hole and is screwed with the screw hole, the locking block is driven to at least partially insert into the first locking groove along the radial direction; In the above technical solution, the locking block is inserted into the first locking groove through the cooperation between the screw hole and the locking bolt, which has the advantages of simple structure, convenient disassembly and assembly, and firm connection.
[0009] One end of the mixing section close to the melting section is fixed with an anti-rotation plate, and an anti-rotation groove adapted to the anti-rotation plate is provided in the rectangular groove; In the above technical solution, the cooperation between the anti-rotation plate and the anti-rotation groove strengthens the connection strength between the mixing section and the melting section, and this connection part is eccentrically arranged, which can play an anti-fooling effect when the mixing section and the melting section are installed.
[0010] The transmission mechanism further includes an external driving active wheel and an internal driving active wheel fixed to the output end of the main driving mechanism. The external driving active wheel drives the two feeding sections to rotate synchronously through meshing with the first external driving wheel, and the internal driving active wheel drives the two melting sections to rotate synchronously through meshing with the first internal driving wheel; In the above technical solution, the external driving active wheel and the internal driving active wheel drive the feeding section and the melting section to rotate through two transmission paths, and can make their rotation speeds the same. The internal driving active wheel of the ratchet structure is in a power transmission state in this transmission path.
[0011] The transmission mechanism further includes a high-speed active wheel fixed to the output end of the secondary driving mechanism. The second high-speed wheel drives the two melting sections to rotate synchronously through meshing with the high-speed active wheel. When the secondary driving mechanism is started, the output speed is greater than the output speed of the main driving mechanism; In the above technical solution, since the high-speed active wheel meshes with the second high-speed wheel, and then the second high-speed wheel meshes with the first high-speed wheel, the driving force of the secondary driving mechanism can be directly transmitted to the melting section at this time. When the rotation speed of the melting section is greater than that of the feeding section, the first internal driving wheel automatically disengages from the external driving active wheel under the action of the ratchet structure.
[0012] The first internal driving wheel, the second internal driving wheel, the first high-speed wheel, and the second high-speed wheel all adopt ratchet structures. The first internal driving wheel and the first high-speed wheel have the same direction, the pawl directions in the first internal driving wheel and the first high-speed wheel are the same, the pawl directions in the second internal driving wheel and the second high-speed wheel are the same, and the pawl directions in the first internal driving wheel and the second internal driving wheel and the first high-speed wheel and the second high-speed wheel are opposite; In the above technical solution, through the cooperation between multiple ratchets, the driving path of the main driving mechanism does not interfere with that of the secondary driving mechanism when driving the feeding section and the melting section. At the same time, the secondary driving mechanism can independently drive the melting section to rotate during driving, and the rotation speed is greater than that of the feeding section, and the mutual cooperation is more flexible.
[0013] Advantages of the present invention: By changing the rotation speeds of different sections in the present invention, the feeding section can run at a low speed to avoid material blockage, while the melting section, the mixing section, and the extrusion section can increase the rotation speed to increase the mixing and extrusion speed. By matching the segmented driving, it is possible to avoid the overall screw running at a single high power, and the ineffective energy consumption can be reduced; The present invention sets the mixing section and the extrusion section as a split structure, and the two can be disassembled at the front end of the melting section. Firstly, the disassembly and assembly have the advantage that the mixing section or the extrusion section can be replaced separately after being worn, instead of replacing the entire screw, thus saving spare parts costs. Secondly, the detachable setting can be partially replaced according to actual material requirements, instead of replacing the entire screw, thus reducing costs and having excellent flexibility and scalability. The transmission mechanism provided in the present invention can switch online between rotating at the same speed and rotating at different speeds in all sections of the screw. By cooperating with the controller, temperature sensor and pressure sensor, the equipment can produce evenly and efficiently, which can greatly reduce ineffective energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure from a side view; Figure 3 It is a schematic diagram of the structure of the present invention from a top view; Figure 4 for Figure 3 Schematic diagram of the main view structure; Figure 5 It is a schematic diagram of the structure of a micro-cone extrusion cylinder and its connecting parts in a top view and half section; Figure 6 It is a structural schematic diagram of two screw rods and a transmission mechanism; Figure 7 It is a half-section structural schematic diagram of the melting section, mixing section, and extrusion section in a connected state; Figure 8 It is a schematic diagram of the structure of the transmission mechanism and the partial separation of the feeding section and the melting section; Figure 9 It is a schematic diagram of the structure in which the melting section, mixing section, and extrusion section are separated and partially cut; Figure 10 It is a schematic diagram of the structure enlarged at the connection between the transmission mechanism and the screw; In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. Frame; 2. Micro-cone extrusion barrel; 21. Conical channel; 22. Feed inlet; 23. Extrusion head; 3. Screw; 31. Feeding section; 311. Connecting sleeve; 312. Round hole; 32. Melting section; 321. Connecting rod; 322. Rectangular groove; 323. Anti-rotation groove; 324. First locking groove; 33. Mixing section; 331. Rectangular hole; 332. Anti-rotation plate; 34. Extrusion section; 341. Rectangular long rod; 342. Second locking groove; 343. Locking block; 3431. Threaded hole; 4. Transmission mechanism; 41. First external driving wheel; 42. Second external driving wheel; 43. External driving active wheel; 44. First internal driving wheel; 45. Second internal driving wheel; 46. Internal driving active wheel; 47. First high-speed wheel; 48. Second high-speed wheel; 49. High-speed active wheel; 5. Main driving mechanism; 6. Secondary driving mechanism; 7. Locking bolt. Detailed implementation manners
[0016] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in combination with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0017] As Figure 1 - Figure 10 shown: This embodiment provides a micro-cone extruder, which includes a frame 1. At the upper end of the frame 1, a micro-cone extrusion barrel 2 is installed. Inside the micro-cone extrusion barrel 2, two screw rods 3 are installed through two interconnected conical channels 21. On one side of the upper end of the micro-cone extrusion barrel 2, there is a feed port 22 for feeding materials. At the front end of the micro-cone extrusion barrel 2, a detachable extrusion head 23 is provided. The extruder further includes: a transmission mechanism 4 connected to the same end of the two screw rods 3 at the same time. The other end of the transmission mechanism 4 is connected to the main drive mechanism 5 and the secondary drive mechanism 6 at the same time. Both the main drive mechanism 5 and the secondary drive mechanism 6 are composed of a motor and a gearbox. The motor is used to drive the gearbox, and the output end of the gearbox is connected to the transmission mechanism 4. When only the main drive mechanism 5 works, the two screw rods 3 are driven to rotate at the same speed through the transmission mechanism 4. At this time, the secondary drive mechanism 6 does not intervene in the work. When it is necessary to accelerate the melting section 32, the mixing section 33, and the extrusion section 34 in the screw rod 3, at this time, the secondary drive mechanism 6 intervenes in the work and its rotation speed is greater than the output rotation speed of the main drive mechanism 5. The feeding section 31 maintains the transmission speed of the main drive mechanism 5. The secondary drive mechanism 6 drives the melting section 32, the mixing section 33, and the extrusion section 34 to accelerate and form a speed difference with the feeding section 31 to avoid material blockage and accelerate the extrusion speed. The present invention is controlled by a single-chip microcomputer. Pressure sensors for detecting the pressures of multiple sections on the screw rod 3 can be set in the micro-cone extrusion barrel 2. When the pressure of the feeding section 31 is much smaller than that of other sections, in this state, the melting section 32, the mixing section 33, and the extrusion section 34 are prone to blockage. At this time, the secondary drive mechanism 6 receives a start command to accelerate the extrusion. After the pressure is restored, the secondary drive mechanism 6 stops.
[0018] As an embodiment of the present invention, the screw 3 includes a feeding section 31 and a melting section 32 distributed along the axial direction. The main driving mechanism 5 can drive the feeding section 31 and the melting section 32 to rotate at the same speed through the transmission mechanism 4, and the secondary driving mechanism 6 can drive the melting section 32 to rotate independently through the transmission mechanism 4. The screw 3 further includes a mixing section 33 and an extrusion section 34 which are arranged at one end of the melting section 32 and are detachable. The feeding section 31 is fixed to the outer driving wheel through a connecting sleeve 311, and the melting section 32 is fixed to the inner driving wheel through a connecting rod 321. A circular hole 312 capable of passing through the connecting rod 321 is formed through the feeding section 31 and the connecting sleeve 311. A rectangular long rod 341 is fixed at one end of the extrusion section 34. A rectangular hole 331 for the rectangular long rod 341 to pass through is formed through the mixing section 33. A rectangular groove 322 for inserting the rectangular long rod 341 is formed at one end of the connecting rod 321 away from the melting section 32. A second locking groove 342 is formed in the rectangular long rod 341, and a sliding locking block 343 is arranged in the second locking groove 342. A first locking groove 324 is formed in the rectangular groove 322 to cooperate with the locking block 343. A through screw hole 3431 is formed in the locking block 343. A through hole penetrating the rectangular groove 322 is formed in the feeding section 31 in the radial direction. When the locking bolt 7 passes through the through hole and is screwed with the screw hole 3431, the locking block 343 is driven to be at least partially inserted into the first locking groove 324 in the radial direction. An anti-rotation plate 332 is fixed at one end of the mixing section 33 close to the melting section 32. An anti-rotation groove 323 adapted to the anti-rotation plate 332 is formed in the rectangular groove 322. Specifically, when the mixing section 33 and the extrusion section 34 are assembled with the melting section 32, the locking block 343 is placed in the second locking groove 342. The rectangular long rod 341 penetrates through the rectangular hole 331 in the mixing section 33 and is inserted into the rectangular groove 322, and at the same time, the anti-rotation plate 332 at the front end of the mixing section 33 is inserted into the anti-rotation groove 323. At this time, the screw hole 3431 is coaxial with the through hole on the melting section 32. The locking bolt 7 penetrates through the through hole on the melting section 32 in the radial direction and is screwed tightly with the screw hole 3431. Under the action of the thread, the locking block 343 is driven to be partially inserted into the first locking groove 324.
[0019] As an embodiment of the present invention, the transmission mechanism 4 includes a first external drive wheel 41 and a second external drive wheel 42 that are connected to and mesh with two feeding sections 31, and a first internal drive wheel 44 and a second internal drive wheel 45 that are connected to and mesh with two melting sections 32. One end of the two melting sections 32 is also provided with a first high-speed wheel 47 and a second high-speed wheel 48 that are driven by the secondary drive mechanism 6 and drive the melting sections 32 to rotate through meshing. The transmission mechanism 4 further includes an external drive active wheel 43 and an internal drive active wheel 46 that are fixed to the output end of the main drive mechanism 5 and rotate counterclockwise. The external drive active wheel 43 drives the two feeding sections 31 to operate synchronously through meshing with the first external drive wheel 41, and the internal drive active wheel 46 drives the two melting sections 32 to operate synchronously through meshing with the first internal drive wheel 44. The transmission mechanism 4 further includes a high-speed active wheel 49 that is fixed to the output end of the secondary drive mechanism 6 and rotates clockwise. The second high-speed wheel 48 drives the two melting sections 32 to operate synchronously through meshing with the high-speed active wheel 49. When the secondary drive mechanism 6 is started, the output speed is greater than the output speed of the main drive mechanism 5. The first internal drive wheel 44, the second internal drive wheel 45, the first high-speed wheel 47, and the second high-speed wheel 48 all adopt ratchet structures. The first internal drive wheel 44 and the first high-speed wheel 47 have the same direction, the pawl directions in the first internal drive wheel 44 and the first high-speed wheel 47 are the same, the pawl directions in the second internal drive wheel 45 and the second high-speed wheel 48 are the same, and the pawl directions in the first internal drive wheel 44 and the second internal drive wheel 45 and the first high-speed wheel 47 and the second high-speed wheel 48 are opposite; Specifically, when the main drive mechanism 5 drives, it drives the external drive active wheel 43 and the internal drive active wheel 46 to rotate simultaneously. The external drive active wheel 43 drives one feeding section 31 to rotate through meshing with the first external drive wheel 41, and the second external drive wheel 42 drives the other feeding section 31 to rotate through the inner core of the first external drive wheel 41. The internal drive active wheel 46 meshes with and drives the first internal drive wheel 44 to rotate. At this time, the inner pawl of the first internal drive wheel 44, which is a ratchet, is in a stuck state, so it directly drives the melting section 32 to rotate. At the same time, the outside of the first internal drive wheel 44 meshes with the second internal drive wheel 45. At this time, the inner pawl of the second internal drive wheel 45, which is a ratchet, is in a stuck state, so it directly drives the other melting section 32 to rotate. In this case, the two screws 3 output a synchronous operation state. The inner rings of the first high-speed wheel 47 and the second high-speed wheel 48 are fixed to the melting section 32. At this time, the melting section 32 is the active end relative to the first high-speed wheel 47 and the second high-speed wheel 48, and the pawls are in a non-engaged state and cannot drive the outer rings of the first high-speed wheel 47 and the second high-speed wheel 48 to rotate; Specifically, the secondary drive mechanism 6 works when the main drive mechanism 5 is in a driving state. When the secondary drive mechanism 6 works, it drives the high-speed active wheel 49 to engage with the outer ring of the second high-speed wheel 48, and the outer ring of the second high-speed wheel 48 engages with the outer ring of the first high-speed wheel 47. At this time, the outer ring is the active end, and the ratchets in the first high-speed wheel 47 and the second high-speed wheel 48 are engaged, driving the two melting sections 32 to rotate. Since the rotation speed of the melting section 32 is greater than the rotation speed of the first inner drive wheel 44 and the second inner drive wheel 45, the ratchets in the first inner drive wheel 44 and the second inner drive wheel 45 are disengaged, and power cannot be transmitted to the melting section 32.
[0020] It is understandable that the adoption of segmented drive, through the zoned speed control of low-speed anti-blocking in the feeding section and high-speed efficiency improvement in the processing section, combined with the modular and detachable design of the mixing section and the extrusion section, can realize the individual replacement of wear parts and flexible reorganization of functional sections. At the same time, it integrates multi-mode dynamic matching, can switch between the same speed and differential speed operation modes online, and cooperates with sensors to optimize energy consumption in real time, reduce effective energy consumption and improve overall energy efficiency.
[0021] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicate orientation or positional relationship, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.
[0022] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A micro-cone extruder, comprising a frame, a micro-cone extrusion barrel is installed on the upper end of the frame, and two screws are installed inside the micro-cone extrusion barrel through a conical channel, characterized in that: It also includes: a transmission mechanism installed at one end of the screw, and the other end of the transmission mechanism is connected to the main drive mechanism and the secondary drive mechanism at the same time; The screw comprises a feeding section and a melting section distributed along the axial direction, the main driving mechanism can drive the feeding section and the melting section to rotate at the same speed through the transmission mechanism, and the secondary driving mechanism can drive the melting section to rotate independently through the transmission mechanism; The screw further comprises a mixing section and an extrusion section which are arranged at one end of the melting section and are detachable; The transmission mechanism includes a first outer drive wheel and a second outer drive wheel connected to the two feeding sections and meshing with each other, and a first inner drive wheel and a second inner drive wheel connected to the two melting sections and meshing with each other. One end of the two melting sections is also provided with a first high-speed wheel and a second high-speed wheel driven by the secondary drive mechanism and driving the melting sections to rotate through meshing.
2. The micro-cone extruder according to claim 1, characterized in that: The feed section is fixed to the outer drive wheel via a connecting sleeve, the melting section is fixed to the inner drive wheel via a connecting rod, and a circular hole through which the connecting rod can pass is formed inside the feed section and the connecting sleeve.
3. The micro-cone extruder according to claim 2, characterized in that: A rectangular long rod is fixed at one end of the extrusion section, a rectangular hole for the rectangular long rod to pass through is opened in the mixing section, and a rectangular groove for plugging with the rectangular long rod is opened at one end of the connecting rod away from the melting section.
4. The micro-cone extruder according to claim 3, characterized in that: A second locking groove is provided in the rectangular long rod, a sliding locking block is provided in the second locking groove, and a first locking groove is provided in the rectangular groove to cooperate with the locking block.
5. The micro-cone extruder according to claim 4, characterized in that: A screw hole is provided in the locking block, and a through hole is radially provided on the feed section and penetrates the rectangular groove. When the locking bolt passes through the through hole and is screwed with the screw hole, the locking block is driven to be at least partially radially plugged into the first locking groove.
6. The micro-cone extruder according to claim 3, characterized in that: An anti-rotation plate is fixed to one end of the mixing section close to the melting section, and an anti-rotation groove adapted to the anti-rotation plate is provided in the rectangular groove.
7. The micro-cone extruder according to claim 1, characterized in that: The transmission mechanism also includes an external drive wheel and an internal drive wheel fixed to the output end of the main drive mechanism. The external drive wheel drives the two feeding sections to operate synchronously by meshing with the first external drive wheel, and the internal drive wheel drives the two melting sections to operate synchronously by meshing with the first internal drive wheel.
8. The micro-cone extruder according to claim 7, characterized in that: The transmission mechanism also includes a high-speed driving wheel fixed to the output end of the secondary drive mechanism. The second high-speed wheel drives the two melting sections to operate synchronously by meshing with the high-speed driving wheel. When the secondary drive mechanism is started, the output end rotation speed is greater than the output rotation speed of the main drive mechanism.
9. The micro-cone extruder according to claim 8, characterized in that: The first inner drive wheel, the second inner drive wheel, the first high-speed wheel and the second high-speed wheel all adopt a ratchet structure.
10. The micro-cone extruder according to claim 1, characterized in that: A feed inlet is arranged at one side of the upper end of the micro-cone extrusion cylinder, and an extrusion head is arranged at the front end of the micro-cone extrusion cylinder.