Double-rotor continuous mixing mill

Abstract

The invention discloses a double-rotor continuous mixing mill which comprises a machine barrel for containing materials and rotors arranged in the machine barrel, a gap is formed between the rotors and the machine barrel in the axial direction, and the double-rotor continuous mixing mill further comprises a moving unit, a driving unit and a driving unit, and the moving unit is arranged on the outer side of the machine barrel and connected with the rotor, and the moving unit is used for driving the rotor to do reciprocating motion in the axial direction. The gap is formed between the rotor and the machine barrel in the axial direction, and the moving unit is arranged outside the machine barrel to drive the rotor to move in the axial direction, so that the oscillation field in the axial direction is formed in the machine barrel, and the unwrapping effect of a molecular chain of a high polymer material can be improved when the high polymer material is processed through a mixing mill due to the addition of the oscillation field; the performance of the blended material is improved. The rotor can be repeatedly used through transmission and is driven to do reciprocating motion, and the use cost is correspondingly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of polymer material processing, in particular to a twin-rotor continuous mixer. Background Art

[0002] During the processing of polymer materials, it is usually necessary to add various additives, functional fillers, etc. to achieve uniform dispersion and distributed mixing while controlling the size of the dispersed phase, so as to improve the material properties or give the material other properties to meet market needs. This places high demands on the mixing process and equipment.

[0003] In the field of polymer blending and processing, mixing equipment such as internal mixers, twin-screw extruders, reciprocating single-screw extruders, and twin-rotor continuous mixers are commonly used to mix materials. Twin-rotor continuous mixers primarily rely on the shearing and stretching effects of the mixing rotor on the polymer material to improve its fluidity and achieve its wetting and coating of fillers. However, the strong shearing and stretching effects can, on the one hand, cause the polymer's molecular chains to break, affecting the material's mechanical properties; on the other hand, they can damage the surface structure of some fillers and reduce other properties of the material. To address the above-mentioned shortcomings, research has found that the addition of an axially reciprocating oscillating field can increase the disentanglement of the polymer's molecular chains, improve the material's fluidity, enhance its coating effect on additives and fillers, and improve the performance of the blended material. Existing technologies typically use external ultrasonic equipment on the basis of mixers to form an axially reciprocating oscillating field within the mixer. However, during use, the external ultrasonic equipment further increases the material processing cost. Therefore, a relatively low-cost solution is needed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect of high cost in the prior art of external ultrasonic equipment for auxiliary material blending, and to provide a twin-rotor continuous mixer.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A twin-rotor continuous mixer, comprising a barrel for containing material and a rotor disposed in the barrel, wherein a gap exists between the rotor and the barrel in an axial direction, and further comprising:

[0007] A moving unit is provided on the outside of the barrel and is connected to the rotor, and is used to drive the rotor to perform reciprocating motion along the axial direction.

[0008] In this solution, a gap is created between the rotor and the barrel along the axial direction, and a movable unit is installed outside the barrel to drive the rotor to move axially, thereby forming an axially oscillating field within the barrel. The addition of this oscillating field can enhance the disentanglement of the polymer molecular chains during processing in the mixer, improve the material's fluidity, enhance its coating effect on additives and fillers, and improve the performance of the blended material. Furthermore, the movable unit does not need to be placed inside the barrel, eliminating the need to place the device inside the barrel. By transmitting and driving the rotor in reciprocating motion, it can be reused multiple times, reducing its cost. Operators can use the movable unit to generate an oscillating field at any time during processing, and response time is also shortened.

[0009] Preferably, the mobile unit includes a power mechanism and a mobile platform, a connecting shaft axially connected to the rotor is provided in the mobile platform, the relative position of the connecting shaft and the mobile platform in the axial direction remains unchanged, and the power mechanism is used to drive the mobile platform to move in the axial direction.

[0010] In this solution, a connecting shaft is provided to connect the rotor to the movable platform in the axial direction. Consequently, when the movable platform is driven by the power mechanism, the rotor inside the barrel also moves axially, forming an oscillating field. Furthermore, this structural arrangement allows the movable unit to be placed outside the barrel, eliminating the need to open the barrel to insert the drive structure each time material is processed, which would affect processing efficiency.

[0011] Preferably, the mobile unit also includes a transmission mechanism, the mobile platform is located above the transmission mechanism and the mobile platform is connected to the transmission mechanism, the transmission mechanism is arranged on the side of the power mechanism, and the mobile platform drives the transmission mechanism to move in the axial direction through the power mechanism.

[0012] In this solution, a transmission mechanism is provided to reduce the space occupied by the twin-rotor continuous mixer in the axial direction.

[0013] Preferably, the movable platform further includes a positioning mechanism, which is disposed in the movable platform and sleeved on the outer circumference of the connecting shaft, and an end portion of the positioning mechanism abuts against a side wall of the movable platform.

[0014] In this solution, a positioning mechanism is provided to keep the relative position between the connecting shaft and the rotor unchanged when the mobile platform moves, thereby preventing the rotor from remaining stationary while the mobile platform moves and the operator being unable to discover the situation in time.

[0015] Preferably, a connecting piece is provided at the connection between the rotor and the connecting shaft, and a clamping portion is provided on the connecting piece, and the end of the rotor cooperates with the clamping portion.

[0016] In this solution, a connecting piece is provided to effectively connect the connecting shaft and the rotor. The provision of the locking portion can ensure smooth transmission of torque and avoid possible damage to the connection between the connecting shaft and the rotor when the rotor rotates alone but the connecting shaft does not rotate.

[0017] Preferably, a seal is provided on the barrel corresponding to the rotor, the seal is located on the outer surface of the barrel, the seal is sleeved on the rotor and the seal and the rotor are clearance-matched.

[0018] In this solution, a seal is installed to prevent the material being processed in the barrel, or the materials required for blending, from escaping from the connection between the rotor and the barrel, improving the sealing performance during material processing. Furthermore, the seal further enhances the sealing function by reducing the number of barrel openings through the externally positioned moving unit, enabling efficient material processing and reducing processing costs.

[0019] Preferably, the twin-rotor continuous mixer further comprises an input portion, which is disposed on one side of the barrel, connected to the rotor and configured to drive the rotor to rotate.

[0020] In this solution, the above arrangement is used to realize the rotation of the rotor, and the rotating rotor can shear and stretch the material in the barrel, that is, effectively process the material.

[0021] Preferably, the input shaft of the input part extends toward the rotor and is coaxially connected to the end of the rotor. A connecting sleeve is sleeved on the input shaft, and the connecting sleeve is clearance-fitted with the input shaft.

[0022] In this solution, a connecting sleeve is provided to position the rotor in the axial direction to prevent it from moving in the axial direction.

[0023] Preferably, an involute spline is provided on the side wall of the connecting sleeve facing the input shaft.

[0024] In this solution, the above arrangement ensures that the connecting sleeve is always located at a fixed position when the input shaft rotates and does not move toward the input part or the rotor and the barrel.

[0025] Preferably, the frequency of the reciprocating motion of the rotor in the axial direction is 5-50 Hz, and the displacement range of the reciprocating motion of the rotor in the axial direction is 0.5-3 mm.

[0026] In this solution, the above-mentioned configuration creates a high oscillation frequency, promoting molecular chain disentanglement during polymer material processing, improving material fluidity and reducing processing difficulty. The rotor's displacement range enables the formation of an effective drag flow within the barrel, enhancing the distribution and mixing of materials during mixing. Furthermore, excessive rotor displacement is prevented from affecting other structures or functions of the mixer.

[0027] The positive and progressive effects of the present invention are as follows: by providing a gap between the rotor and the barrel in the axial direction and disposing a moving unit outside the barrel to drive the rotor to move axially, an oscillating field is formed in the barrel along the axial direction. The addition of the oscillating field can enhance the disentanglement of the polymer molecular chains when the polymer material is processed through the mixer, improve the material's fluidity, enhance its coating effect on additives and fillers, and improve the performance of the blended material. Furthermore, the moving unit does not need to be placed inside the barrel, eliminating the step of placing the device inside the barrel. By transmitting and driving the rotor to perform reciprocating motion, the device can be reused multiple times, and the cost of use is correspondingly reduced. The operator can use the moving unit to generate the oscillating field at any time during processing, and the response time is correspondingly shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional diagram of a twin-rotor continuous mixer according to a preferred embodiment of the present invention.

[0029] Figure 2 FIG. 1 is a diagram showing the positional relationship between the connecting shaft and the positioning mechanism according to a preferred embodiment of the present invention.

[0030] Figure 3 1 is a diagram showing the positional relationship between the connector and the rotor according to a preferred embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the initial position of the rotor in the barrel according to a preferred embodiment of the present invention.

[0032] Figure 5 Schematic diagram of the position of the rotor after moving in the barrel according to a preferred embodiment of the present invention.

[0033] Figure 6 Schematic diagram of the structure of the rotor and seal according to a preferred embodiment of the present invention.

[0034] Description of reference numerals:

[0035] Barrel 1

[0036] Rotor 2

[0037] Mobile Unit 3

[0038] Power mechanism 31

[0039] Mobile Platform 32

[0040] Connecting shaft 321

[0041] Transmission mechanism 33

[0042] Positioning mechanism 4

[0043] Connector 5

[0044] Engaging portion 51

[0045] Seal 6

[0046] Input unit 7

[0047] Input shaft 71

[0048] Connecting sleeve 8 DETAILED DESCRIPTION

[0049] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0050] This embodiment provides a twin-rotor continuous mixer, the specific structure of which is as follows: Figure 1 、 Figure 2 and Figure 3 As shown, the twin-rotor continuous mixer includes a barrel 1 for containing materials and a rotor 2 arranged in the barrel 1. The barrel 1 is a rectangular structure and the rotor 2 is arranged along the length direction of the rectangular structure. Both ends of the rotor 2 extend out of the ends of the barrel 1 along the length direction respectively. The rotor 2 is a rod and the outer surface of the rotor 2 is provided with protrusions for stirring the material, so that when the material is placed in the barrel 1, the rotor 2 rotates and the material is sheared and stretched in the radial direction. This is the existing technology and will not be described in detail here.

[0051] Among them, there is a gap between the rotor 2 and the barrel 1 along the axial direction. Compared with the method in the prior art in which the barrel 1 is provided with a limiting structure along the axial direction of the rotor 2, the rotor 2 has the basis for moving in the axial direction, that is, the rotor 2 can move in the axial direction on the basis of being able to rotate by itself and making the protrusion rotate accordingly, and the protrusion can also move in the axial direction accordingly. Under the axial movement, the rotor 2 will form a force in the barrel 1 to push the material to move in the axial direction, so that the material is not only subjected to shearing and stretching in the radial direction, but also pushed in the axial direction, which promotes the disentanglement of the molecular chain of the material, such as the processing of polymer materials, and improves the fluidity of the material.

[0052] Meanwhile, the twin-rotor continuous mixer further includes a moving unit 3 , which is disposed outside the barrel 1 and connected to the rotor 2 , and is used to drive the rotor 2 to reciprocate in the axial direction.

[0053] Specifically, the moving unit 3 is arranged at the end of the barrel 1 in the length direction and is spaced apart from the barrel 1. The moving unit 3 drives the rotor 2 to move in the axial direction, so that the rotor 2 can smoothly realize reciprocating motion in the axial direction on the basis of moving in the axial direction and form an oscillation field in the axial direction in the barrel 1. The oscillation field causes the material to oscillate in the axial direction, and under this oscillation, the material, such as the disentanglement of molecular chains in the processing of polymer materials, is promoted, and the coating effect of the material on additives and fillers is enhanced, the performance of the blended material is improved, and the processing difficulty is greatly reduced.

[0054] Furthermore, the mobile unit 3 need not be placed inside the barrel 1, eliminating the need to open the barrel 1 and insert the device into it each time. This allows materials to be placed directly into the barrel 1 for multiple processing operations. The operator can use the mobile unit 3 to generate an oscillation field at any time during processing. When the mobile unit 3 is connected to the rotor 2, the resulting oscillation field is more uniform, and the response time is correspondingly shortened. The method of using the mobile unit 3 to drive the rotor 2 in reciprocating motion can be reused multiple times and is significantly less expensive than using external equipment, such as an ultrasonic probe, for oscillation.

[0055] In other embodiments, the mobile unit 3 can also be set on the side, top or bottom of the barrel 1. On the basis of the connection between the mobile unit 3 and the rotor 2, changing the setting position of the mobile unit 3 can still achieve the above functions. This is the existing technology and will not be elaborated here.

[0056] Furthermore, in this embodiment, the mobile unit 3 includes a power mechanism 31 and a mobile platform 32. A connecting shaft 321 axially connected to the rotor 2 is provided in the mobile platform 32. The relative position of the connecting shaft 321 and the mobile platform 32 along the axial direction remains unchanged. The power mechanism 31 is used to drive the mobile platform 32 to move along the axial direction.

[0057] Specifically, the movable platform 32 is a rectangular parallelepiped structure and is used to accommodate a connecting shaft 321. The connecting shaft 321 is arranged axially within the movable platform 32. The end of the connecting shaft 321 extends out of the movable platform 32 and connects to the end of the rotor 2. The power mechanism 31 is a servo motor as known in the art, which provides stable power for the reciprocating motion of the rotor 2 in the axial direction. Of course, the power mechanism 31 can also be other driving structures, such as a hydraulic cylinder. It is important to note that when the power mechanism 31 drives the movable platform 32 to reciprocate, the position of the connecting shaft 321 relative to the movable platform 32 in the axial direction remains unchanged. For example, the distance between the end of the connecting shaft 321 and the corresponding side wall of the movable platform 32 remains unchanged. This prevents the connecting shaft 321 from moving with the movable platform 32, preventing the rotor 2 from moving axially. By locating the movable unit 3 outside the barrel 1, the need to open the barrel 1 and insert the drive structure each time material is processed is reduced, which reduces processing efficiency.

[0058] In this embodiment, the mobile unit 3 also includes a transmission mechanism 33, the mobile platform 32 is located above the transmission mechanism 33 and the mobile platform 32 is connected to the transmission mechanism 33, the transmission mechanism 33 is arranged on the side of the power mechanism 31, and the mobile platform 32 drives the transmission mechanism 33 to move along the axial direction through the power mechanism 31.

[0059] Specifically, the power mechanism 31 and the transmission mechanism 33 are located below the mobile platform 32, and the transmission mechanism 33 is located on the side of the power mechanism 31. By arranging the transmission mechanism 33 below the mobile platform 32, compared with the way in which the power mechanism 31, the transmission mechanism 33 and the mobile platform 32 are arranged in sequence along the axial direction, the space occupied by the twin-rotor continuous mixer is reduced along the axial direction.

[0060] The power mechanism 31 is connected to the transmission mechanism 33. In this embodiment, the transmission mechanism 33 is described as a screw mechanism, but it is not limited to it. The transmission mechanism 33 can also be other transmission structures such as a synchronous belt. By setting a screw mechanism, when the power mechanism 31 transmits power through the transmission mechanism 33, the servo motor provides stable power for the axial reciprocating motion of the rotor 2, and at the same time, it can drive the screw mechanism of the mobile platform 32 to accurately control the axial reciprocating movement distance of the rotor 2, so as to improve the oscillation accuracy of the oscillation field and correspondingly improve the performance of the material after processing.

[0061] In this embodiment, the movable platform 32 further includes a positioning mechanism 4 . The positioning mechanism 4 is disposed inside the movable platform 32 and sleeved on the outer circumference of the connecting shaft 321 . An end of the positioning mechanism 4 abuts against a side wall of the movable platform 32 .

[0062] Specifically, the connecting shaft 321 and the rotor 2 are located on the same horizontal plane, a cavity is provided in the movable platform 32, and the movable platform 32 is covered on the connecting shaft 321, both ends of the connecting shaft 321 extend out of the cavity, and a positioning mechanism 4 is also provided in the cavity, the positioning mechanism 4 is a shaft sleeve and is sleeved on the connecting shaft 321, and the end of the shaft sleeve abuts against the inner wall of the cavity to ensure that the connecting shaft 321 follows the movement when the movable platform 32 moves without axial movement.

[0063] In addition, in this embodiment, multiple sets of bearings are installed within the cavity. The bearings are connected to the inner wall of the cavity, and the connecting shaft 321 is disposed within the bearings. Simultaneously, the connecting shaft 321 extends out of the cavity through a through hole, and a clearance fit between the connecting shaft 321 and the through hole ensures that the connecting shaft 321 rotates with the rotor 2 without causing wear to the cavity. Accordingly, multiple sets of bushings are provided when installing the bearings, one at each end of the bearings. The bearings and bushings cooperate to position the connecting shaft 321 relative to the movable platform 32.

[0064] like Figure 3 As shown, in this embodiment, a connecting member 5 is provided at the connection between the rotor 2 and the connecting shaft 321 . The connecting member 5 is provided with a clamping portion 51 , and the end of the rotor 2 cooperates with the clamping portion 51 .

[0065] Specifically, the end of the rotor 2 is provided with a screw for threaded connection and a boss located on the side of the screw, the end of the connecting shaft 321 is provided with a threaded through hole corresponding to the screw, and the connecting shaft 321 is provided with an external thread at the connection with the rotor 2, the connecting shaft 321 and the rotor 2 are screwed together through the screw and the threaded through hole, and a connecting piece 5 is sleeved at the connection between the connecting shaft 321 and the rotor 2, the connecting piece 5 is a cylindrical structure and is provided with a clamping portion 51, the clamping portion 51 corresponds to the boss on the side of the screw and is matched and connected, the clamping portion 51 is a groove. Of course, the positions of the groove and the boss can also be interchanged, so that the connecting shaft 321 is locked by the connecting member 5 after being connected to the rotor 2. In the locked state, the self-rotation of the rotor 2 can drive the connecting shaft 321 to rotate, and there is no need to worry about the threaded connection between the connecting shaft 321 and the rotor 2 being unlocked during rotation. In other words, the setting of the locking portion 51 can ensure the smooth transmission of the torque of the rotor 2, and avoid possible damage to the connection between the connecting shaft 321 and the rotor 2 when the rotor 2 rotates alone and the connecting shaft 321 does not rotate.

[0066] like Figure 4 and Figure 5 As shown, in this embodiment, a seal 6 is provided on the barrel 1 corresponding to the rotor 2 . The seal 6 is located on the outer surface of the barrel 1 , is sleeved on the rotor 2 , and the seal 6 and the rotor 2 are clearance-matched.

[0067] Specifically, the end of the barrel 1 along the length direction is provided with the end of the rotor 2 extending out of the barrel 1. In addition, a seal 6 is provided. The seal 6 is fixedly connected to the barrel 1. The seal 6 is a circular ring structure and is sleeved on the portion of the rotor 2 extending out of the barrel 1. Figure 6 As shown, in this embodiment, the radial clearance between the rotor 2 and the seal 6 is 0.1 to 0.15 mm. The seals 6 are arranged in pairs corresponding to the number of rotors 2 and located at both ends of the barrel 1 along the length direction, so that the reciprocating axial motion of the rotor 2 does not cause the seals 6 to move. The provision of the seal 6 prevents the material being processed within the barrel 1 or the materials required for blending from escaping from the connection between the rotor 2 and the barrel 1, thereby improving the sealing performance during material processing. Furthermore, by reducing the number of times the barrel 1 needs to be opened by the externally positioned moving unit 3, the seal 6 further enhances the sealing effect, enabling efficient material processing and reducing processing costs.

[0068] In this embodiment, the twin-rotor continuous mixer further includes an input portion 7 , which is disposed on one side of the barrel 1 , connected to the rotor 2 and used to drive the rotor 2 to rotate.

[0069] Specifically, input portion 7 is located at the end of barrel 1 away from moving unit 3 and is connected to the end of rotor 2. Input portion 7 drives rotor 2 to rotate, thereby causing the protrusions on rotor 2 to rotate with it and process the material in barrel 1, achieving shearing and stretching of the material. Input portion 7 can be a servo motor or other structure for driving rotor 2 to rotate. This is conventional technology and will not be described in detail here.

[0070] Furthermore, the input shaft 71 of the input portion 7 extends toward the rotor 2 and is coaxially connected to the end of the rotor 2 . A connecting sleeve 8 is sleeved on the input shaft 71 , and the connecting sleeve 8 is clearance-fitted with the input shaft 71 .

[0071] Specifically, the input shaft 71 is a rod extending horizontally toward the end of the rotor 2. The end of the input shaft 71 is coaxially connected to the end of the rotor 2. The connecting sleeve 8 is a sleeve structure. The inner wall of the connecting sleeve 8 facing the input shaft 71 is larger than the input shaft 71 and has a clearance fit, allowing the connecting sleeve 8 to rotate with the input shaft 71. By providing the connecting sleeve 8 between the input portion 7 and the rotor 2, the rotor 2 is positioned axially, preventing the rotor 2 from moving axially and contacting the input portion 7.

[0072] In this embodiment, an involute spline is provided on the side wall of the connecting sleeve 8 facing the input shaft 71 .

[0073] Specifically, an involute spline is provided on the side wall of the connecting sleeve 8 facing the input shaft 71, and the input shaft 71 cooperates with the involute spline so that the connecting sleeve 8 can follow the rotation when the input shaft 71 rotates. Moreover, because the involute spline itself has a centering function, the connecting sleeve 8 can always rotate around the axial direction when following the rotation, avoiding shaking of the connecting sleeve 8 when following the rotation under clearance fit, reducing noise generation and avoiding movement of the connecting sleeve 8.

[0074] In another embodiment, the involute spline can also be set on the outer surface of the input shaft 71, and the side wall of the connecting sleeve 8 facing the input shaft 71 cooperates with the involute spline, that is, the setting position of the involute spline is interchangeable between the connecting sleeve 8 and the input shaft 71, which can also achieve the above-mentioned function. This is the existing technology and will not be elaborated on here.

[0075] In this embodiment, the frequency of the reciprocating motion of the rotor 2 in the axial direction is 5-50 Hz, and the displacement range of the reciprocating motion of the rotor 2 in the axial direction is 0.5-3 mm.

[0076] Specifically, the motion frequency of the power mechanism 31 is generally maintained at 5-50 Hz. The transmission mechanism 33 drives the mobile platform 32 and the rotor 2 connected to the mobile platform 32 to maintain the same motion frequency, thereby generating a higher oscillation frequency. This promotes molecular chain disentanglement during polymer material processing, improves material fluidity, and reduces processing difficulty. Furthermore, because the rotors of the twin-rotor continuous mixer are non-meshing, their self-cleaning effect is relatively weak. However, when the rotors reciprocate axially at a high frequency, a drag flow is generated between the rotor 2 and the inner wall of the barrel 1. This drag flow promotes axial movement of the material, effectively preventing localized accumulation and retention of the material, and improving the distribution and mixing of the material within the barrel 1. While the rotor 2 maintains the aforementioned frequency, the displacement range of the rotor 2's reciprocating motion is limited in this embodiment. This further enhances the distribution and mixing of the material within the barrel 1, compared to when the axial reciprocating motion is too short, resulting in an ineffective drag flow within the barrel 1. This also prevents other structures or functions of the twin-rotor continuous mixer from being affected by excessive axial movement of the rotor 2.

[0077] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A twin-rotor continuous mixer, comprising a barrel for containing materials and a rotor disposed in the barrel, characterized in that: There is a gap between the rotor and the barrel in the axial direction, and the twin-rotor continuous mixer further comprises: A moving unit is provided on the outside of the barrel and is connected to the rotor, and is used to drive the rotor to perform reciprocating motion along the axial direction.

2. The twin-rotor continuous mixer according to claim 1, wherein The mobile unit includes a power mechanism and a mobile platform. A connecting shaft axially connected to the rotor is provided in the mobile platform. The relative position of the connecting shaft and the mobile platform in the axial direction remains unchanged. The power mechanism is used to drive the mobile platform to move in the axial direction.

3. The twin-rotor continuous mixer according to claim 2, wherein: The mobile unit also includes a transmission mechanism, the mobile platform is located above the transmission mechanism and the mobile platform is connected to the transmission mechanism, the transmission mechanism is arranged on the side of the power mechanism, and the mobile platform drives the transmission mechanism to move in the axial direction through the power mechanism.

4. The twin-rotor continuous mixer according to claim 2, wherein: The mobile platform further includes a positioning mechanism, which is arranged in the mobile platform and sleeved on the outer peripheral side of the connecting shaft. The end of the positioning mechanism abuts against the side wall of the mobile platform.

5. The twin-rotor continuous mixer according to claim 2, wherein: A connecting piece is provided at the connection point between the rotor and the connecting shaft. A clamping portion is provided on the connecting piece. The end of the rotor matches the clamping portion.

6. The twin-rotor continuous mixer according to claim 1, wherein A sealing member is provided on the barrel corresponding to the rotor. The sealing member is located on the outer surface of the barrel. The sealing member is sleeved on the rotor and has clearance fit with the rotor.

7. The twin-rotor continuous mixer according to claim 1, wherein The twin-rotor continuous mixer further includes an input portion, which is disposed on one side of the barrel, connected to the rotor and used to drive the rotor to rotate.

8. The twin-rotor continuous mixer according to claim 7, wherein: An input shaft of the input part extends toward the rotor and is coaxially connected to an end portion of the rotor. A connecting sleeve is sleeved on the input shaft, and the connecting sleeve is clearance-fitted with the input shaft.

9. The twin-rotor continuous mixer according to claim 8, wherein: An involute spline is provided on the side wall of the connecting sleeve facing the input shaft.

10. The twin-rotor continuous mixer according to claim 1, wherein: The frequency of the reciprocating motion of the rotor in the axial direction is 5-50 Hz, and the displacement range of the reciprocating motion of the rotor in the axial direction is 0.5-3 mm.

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