JP7328286B2 - triaxial planetary mixer - Google Patents

Description

The present invention relates to a three-screw planetary mixer, in particular, dispersing aggregates of particles (aggregates of aggregated particles) uniformly at high speed with high-speed shafts, and tangentially mixing and kneading them while intersecting low-speed shafts to produce raw materials. It relates to a triaxial planetary mixer that achieves a good dispersing effect and improves production efficiency by stirring the particle aggregates.

The types and uses of conventional mixers differ depending on the purpose of use, but they are all equipped with a barrel. It can be reused after it has served its purpose.
However, general-type mixers are suitable for applications with small amounts or small changes in material structure, but with the advancement of science and technology, there are cases where needs, powders, material updates, and material types are different from the past. In many cases, the role of mixers is becoming more demanding, but conventional mixers can only meet general requirements, and are capable of producing higher volume, more sophisticated dispersion requirements and consistent product quality at the same time. As for the manufacturing method, the multi-axis planetary mixer was developed because the user faced the problem that they had to find a breakthrough.
Typical mechanical high speed mixing machines on the market operate at speeds from 600 rpm to 7200 rpm, all use belt operation and are designed to include belt adjusters, but as the belt runs longer , belt loosening, belt overheating and slippage are likely to occur, causing torque loss and malfunction. Furthermore, the cabinet space is narrow, the belt adjuster is not easy to install, and replacing the belt idler is likely to cause malfunction. It affects production and causes the risk of production stoppage and transition to repair.
Furthermore, in general, the center of the four-axis arm of a conventional four-axis arm type planetary mixer is rhombic, and each axis takes up 1/6 of the installation space. Small core, easy to sway, weak dynamic load on bearing, easy to deform and bend shaft. High-speed dispersion blades are afraid of colliding with low-speed blades due to lack of space, and the dispersion effect is low and efficiency is poor.
In addition, in general, the center of the two-arm of the conventional two-arm type planetary mixer is linear, and the high-speed dispersion occupies two-fifths of the barrel diameter area. Because it is suitable for expansion, it is not easy to shake, the dynamic load of the bearing is strong, the shaft is not easy to deform and bend, and the dispersion blade can also increase the dispersion, but because the high and low speed shafts are in line , It is known that the low-speed shaft only mixes without kneading, and the blank convection on both sides cannot be operated only in revolution, and the dispersion efficiency effect is poor.

Therefore, how to solve the above-mentioned conventional problems and drawbacks is an urgent research and improvement direction for the inventors of the present invention and related manufacturers engaged in this industry.

In view of this, in order to effectively solve the above problems, the main object of the present invention is to disperse the particle aggregates uniformly at high speed in a high speed shaft and mix them tangentially while crossing the low speed shafts. And, by kneading and stirring the raw material particle aggregates, a good dispersing effect is achieved and the production efficiency is improved to provide a triaxial planetary mixer.

Another object of the present invention is to provide a three-axis planetary mixer that operates with full gears to avoid the problem of using belts.

Another object of the present invention is to provide a three-screw planetary mixer whose revolution or rotation range covers the inside of the stirring tank to enhance dispersion efficiency.

To reach the above objects, the present invention provides a three-screw planetary mixer including a box body, a gearbox and an agitating barrel. A first drive motor and a second drive motor are provided inside the box body. An expansion tank is provided above the box body. The gearbox is installed below the box body, and has a first transmission unit and a second transmission unit inside the gearbox. The first transmission unit connects to the first drive motor and the second transmission unit connects to the second drive motor.
Furthermore, two low speed gears and one high speed gear are provided in the gearbox, the low speed gear is assembled together with the first transmission unit, and the low speed gear further includes a low speed shaft. While provided, the high speed gear is mutually assembled with the second transmission unit, and the high speed gear is further provided with a high speed shaft, and the stirring barrel is provided below the gearbox.
Within the stirring barrel, a stirring tank is formed, and two low speed stirring assemblies and one high speed stirring assembly are provided within the stirring barrel. The low speed stirring assembly connects to the low speed shaft and the high speed stirring assembly connects to the high speed shaft. The two slow stirring assemblies occupy 58% to 63% of the stirring tank area. The high speed stir assembly occupies 37% to 42% of the stir tank area. Therefore, the entire space of the stirring tank is filled with the low-speed stirring assembly and the high-speed stirring assembly, and the inner wall of the stirring tank is revolved around the inner wall of the stirring tank to stir while rotating, and the particle aggregates are stirred uniformly at high speed with the high-speed shaft. While dispersing, tangentially mixing and kneading with crossing low-speed shafts to stir the raw material particle aggregates to achieve good dispersing effect and improve production efficiency. In addition, it works in full gear to avoid the problem of using belts.

According to one embodiment of the three-axis planetary mixer according to the invention, said first drive motor comprises a first transmission assembly connected to said first transmission unit.

According to an embodiment of the three-axis planetary mixer according to the invention, said second drive motor comprises a second transmission assembly connected to said second transmission unit.

According to an embodiment of the three-screw planetary mixer according to the present invention, the expansion tank has a communication passage that communicates with the inside of the gearbox.

According to one embodiment of the three-screw planetary mixer according to the invention, a counterweight is further provided within said gearbox.

According to one embodiment of the three-axis planetary mixer according to the invention, said first drive motor comprises a slow speed assembly.

According to one embodiment of the three-screw planetary mixer according to the invention, said high speed stirring assembly is a stirrable assembly such as dispersing blades, butterfly blades, paddle blades, disc blades or bar blades.

According to one embodiment of the triple-screw planetary mixer according to the invention, said slow stirring assembly is a straight frame blade or a helical blade.

According to one embodiment of the three-screw planetary mixer according to the invention, the slow stirring assembly has a top side and a bottom side. The low speed agitating assembly is connected to the ends of the top and bottom sides by extending side portions thereof, respectively, and the low speed agitating assembly is connected to the low speed shaft at the top side.

According to an embodiment of the triaxial planetary mixer according to the present invention, the cross-sectional shape of the side portion is a mirror-symmetric hexagon having a maximum interior angle of 120 degrees or more and a minimum interior angle of 70 to 78 degrees. configured to
the length of the top portion is greater than the distance between the low speed shafts of adjacent low speed agitating assemblies;
Each of the low-speed stirring assemblies revolves and simultaneously rotates about each of the low-speed shafts,
The upper side portion and the lower side portion are alternately arranged to form an X shape in projection,
The side part is configured to have a mirror-symmetrical hexagonal cross-sectional shape with a maximum interior angle of 120 degrees or more and a minimum interior angle of 70 degrees to 78 degrees,
The maximum horizontal width (L), the maximum vertical width (W), and the minimum side length (N) of the mirror-symmetrical hexagon satisfy the following equations (1) and (2).
6:5≤L:W≤7:5 (1)
15:5≤L:N≤40:5 (2)

FIG. 1 is a combined schematic diagram of a triaxial planetary mixer according to the present invention. FIG. 2 is a partial schematic diagram of a three-screw planetary mixer according to the invention. FIG. 3A is a partial schematic view of the low speed stirring assembly of a three-screw planetary mixer in accordance with the present invention. FIG. 3(B) is a schematic diagram of the cross-sectional angle of FIG. 3(A). FIG. 4 is a schematic diagram of a partially implemented operation of a three-screw planetary mixer in accordance with the present invention;

The above objects of the present invention and its structure and functional features will be explained on the basis of preferred embodiments in the accompanying drawings.

1, 2, 3(A) and 3(B) are, respectively, a combination schematic, partial schematic and a partial schematic and sectional angle view of a three-screw planetary mixer according to the present invention. 1 is a schematic diagram; FIG. First, as is clear from the drawing, the triaxial planetary mixer includes a box body 2, a gearbox 3, and a stirring barrel 4. As shown in FIG.

A first drive motor 21 and a second drive motor 22 are provided inside the box body 2 . The first drive motor 21 has a first transmission assembly 211 and a slow speed assembly 212 . An expansion tank 23 is provided in the box body 2 . The expansion tank 23 has a communication passage 231 . A through hole 232 is formed in the expansion tank.

Here, the gearbox 3 is provided at the bottom of the box body 2 . One end of the communication passage 2311 of the expansion tank 23 communicates with the gearbox 3 , and the gearbox 3 is provided with a first transmission unit 31 and a second transmission unit 32 . The first transmission unit 31 is interconnected with the first transmission assembly 211 and the second transmission unit 32 is interconnected with the second transmission assembly 221 .
Inside the gearbox 3 there are further two low speed gears 33 and one high speed gear 34 , the low speed gear 33 being assembled together with the first transmission unit 31 . A low speed shaft 331 is provided below the low speed gear 33 , while the high speed gear 34 is assembled together with the second transmission unit 32 . A high-speed shaft 341 is provided below the high-speed gear 34 , and a counterweight 35 is further provided inside the gearbox 3 .

The stirring barrel 4 is provided below the gear box 3 , and a stirring tank 41 is formed inside the stirring barrel 4 . Furthermore, two low speed stirring assemblies 42 and one high speed stirring assembly 43 are provided in said stirring barrel 4 .
The low speed stirring assembly 42 connects to the low speed shaft 331, and the two low speed stirring assemblies 42 connect to the stirring tank 41 and occupy 58 % -63 % of the stirring tank area. Also, the high speed stirring assembly 43 is connected to the high speed shaft 341 , and the high speed stirring assembly 43 occupies 37% to 42% of the area of the stirring tank 41 . The high-speed stirring assembly 43 uniformly mixes the raw material particles and the resin with a dispersing blade, a butterfly blade, a paddle blade, a disc type blade, a rod type blade, or the like according to the properties of the raw material molecular particles, thereby obtaining desired molecular particles. shape can be reached. The low-speed stirring assembly 42 may be a straight frame blade or a spiral blade, etc., to uniformly mix the raw material particles and the resin to reach the desired shape of the molecular particles.

The slow stirring assembly 42 further comprises a top side 421 and a bottom side 422 . The low speed stirring assembly 42 is extended and connected to both ends of the upper side portion 421 and the lower side portion 422 by side portions 423 respectively. The low speed stirring assembly 42 is connected to the low speed shaft 331 at the upper side 421 . The length of the upper side 421 is greater than the distance between the low speed shafts 331 of adjacent low speed agitating assemblies 42 . Each of the low-speed stirring assemblies 42 revolves and simultaneously rotates around each of the low-speed shafts 331, and the upper side portions 421 and the lower side portions 422 are alternately arranged so as to form an X shape in projection. .

In addition, from the viewpoint of uniformity of kneading and stirring effect, the side part 423 is appropriately configured to have a cross-sectional shape of any of three-way symmetrical hexagons, equiangular hexagons, regular hexagons, or mirror image symmetrical hexagons. preferably. More preferably, mirror-symmetrical hexagons as shown in FIGS. 3(A) and 3(B) are formed.
That is, the side portion 423 is configured to have a mirror-symmetrical hexagonal cross-sectional shape with a maximum interior angle of 120 degrees or more and a minimum interior angle of 70 to 78 degrees. Further, as shown in FIG. 3B, the maximum horizontal width (L), the maximum vertical width (W), and the minimum side length (N) of this mirror-symmetrical hexagon are given by the following equation (1), (2) is satisfied.
6:5≤L:W≤7:5 (1)
15:5≤L:N≤40:5 (2)

Further, from the viewpoint of improving the structural strength of the side portion 423 and avoiding the occurrence of acute angle cracks, each apex angle of the mirror image symmetrical hexagon of the side portion 423 is further formed as an arc angle. For example, arc angles with curvature radii r1 and r2 as shown in FIG. 3(B) may be formed. From the viewpoint of shortening the retention delay time and enhancing the stirring effect, the curvature radii r1 and r2 of the circular arc angle are preferably in the range of 1/12 to 1/8 of the lateral maximum width (L). More preferably, it ranges from 1/11 to 1/9. On the other hand, r1 and r2 may be the same or different.

Also, FIG. 4 is a schematic diagram 1 of a partially implemented operation of a three-axis planetary mixer according to the present invention. Referring to FIG. 4 in conjunction with the above drawings, when the three-axis planetary mixer starts up, the first drive motor 21 is driven through the first transmission assembly 211 and slow speed assembly 212 to the first transmission The unit 31 revolves, the first transmission unit 31 rotates at a low speed through the slow speed assembly 212, and the low speed gear 33 rotates at the same time as the first transmission unit 31 rotates, and the low speed gear 33 rotates. rotates, the low-speed shaft 331 revolves and rotates in the stirring barrel 4 to perform stirring.
In addition, the second driving motor 22 revolves the second transmission unit 32 through the second transmission assembly 221, and rotates the high-speed gear 34 at the same time as the second transmission unit 32 rotates. , the high-speed gear 34 rotates, and at the same time, the high-speed shaft 341 revolves and rotates in the stirring barrel 4 to perform stirring.
Moreover, the two low speed stirring assemblies 42 occupy 58%-63% of the area of the stirring tank 41 . The high speed stirring assembly 43 occupies 37% to 42% of the area of the stirring tank 41 . Therefore, the low-speed stirring assembly 42 and the high-speed stirring assembly 43 revolve along the inner wall of the stirring tank 41 to stir, and the high-speed stirring assembly 43 occupies 58% to 63% of the area of the stirring tank 41. occupy For this reason, the rotatable space is large, and if the rotatable space is large, the bearing and shaft center can be enlarged, so that it will not shake easily, the dynamic load on the bearing will be strong, and the shaft will not deform. It is not difficult, the range of blades used can also be increased, and its dispersion effect efficiency can reach a high effect.
In addition, the space for rotation of its high speed stirring assembly 43 is small, and the space is quickly filled with revolution, while the low speed stirring assembly 42 kneads and mixes, both of which mix the mass of raw material aggregate particles, and the convection and dispersion efficiency high effect can be achieved rapidly.

In addition, the three-axis planetary mixer is arranged with full gears in its gearbox 3 to solve the problems caused by the conventional belt operation, and the positive pressure gas generated by the low speed gear 33 and the high speed gear 34. is discharged to the expansion tank 23 via the communication passage 231 and then discharged from the through hole 232 of the expansion tank 23 .
The expansion tank 23 can recover excess lubricant from gearing and divert it to the gearbox 3 after shutdown to maintain and replenish gear lubrication over time.
Also, two low speed stirring assemblies 42 and one high speed stirring assembly 43 in the stirring barrel 4 form a triangular arrangement, with two low speed stirring assemblies provided on one side, while a high speed stirring assembly 43 is provided on the other side. provided on the side. Therefore, by providing the gearbox 3 with a counterweight 35, the balance can be maintained when the gearbox 3 revolves or rotates, and the planetary mixer is prevented from swinging or vibrating due to loss of balance. be able to.

Although the present invention has been described in detail above, what has been described above is only one preferred embodiment of the present invention, and is not intended to limit the scope of implementation of the present invention, namely by the scope of the present invention. Equivalent changes, modifications, etc. made should fall within the scope of the claims of the present invention.

1 triaxial planetary mixer 2 box body 21 first drive motor 221 first transmission assembly 212 slow speed assembly 22 second drive motor 221 second transmission assembly 23 expansion tank 231 communication passage 3 gearbox 31 first Transmission unit 32 Second transmission unit 33 Low speed gear 331 Low speed shaft.
34 high speed gear 341 high speed shaft 35 counterweight 4 stirring barrel 41 stirring tank 42 low speed stirring assembly 421 upper side 422 lower side.
423 side 43 high speed stir assembly

Claims (8)

a box body having a first drive motor and a second drive motor provided therein and an expansion tank having a through hole formed thereon;
Installed below the box body and internally having a first transmission unit connected to the first drive motor and a second transmission unit connected to the second drive motor Further, there are provided two low speed gears and one high speed gear, said low speed gear being mutually assembled with said first transmission unit to provide a low speed shaft, while said high speed gear being connected to said second transmission unit. a gearbox assembled with and provided with a high speed shaft;
forming a stirred tank and provided with two low speed stirring assemblies and one high speed stirring assembly, said low speed stirring assembly connecting to said low speed shaft, said high speed stirring assembly connecting to said high speed shaft, and said two low speed stirring assemblies wherein the stirring assembly occupies 58% to 63% of the stirring tank area, and the high speed stirring assembly comprises a stirring barrel occupying 37% to 42% of the stirring tank area ;
the slow stirring assembly has a top side and a bottom side;
the slow stirring assembly is connected to each end of the top side and the bottom side by extending side portions thereof, and
the low speed agitation assembly is connected to the low speed shaft at the top;
The cross-sectional shape of the side part is configured to be a mirror-symmetric hexagon having a maximum interior angle of 120 degrees or more and a minimum interior angle of 70 degrees to 78 degrees,
the length of the top portion is greater than the distance between the low speed shafts of adjacent low speed agitating assemblies;
Each of the low-speed stirring assemblies revolves and simultaneously rotates about each of the low-speed shafts,
The upper side portion and the lower side portion are alternately arranged to form an X shape in projection,
The side part is configured to have a mirror-symmetrical hexagonal cross-sectional shape with a maximum interior angle of 120 degrees or more and a minimum interior angle of 70 degrees to 78 degrees,
The maximum horizontal width (L), the maximum vertical width (W), and the minimum side length (N) of the mirror-symmetrical hexagon satisfy the following equations (1) and (2). , triaxial planetary mixer.
6:5≤L:W≤7:5 (1)
15:5≤L:N≤40:5 (2) 3. The three-axis planetary mixer of claim 1, wherein said first drive motor has a first transmission assembly connected to said first transmission unit. 2. The three-axis planetary mixer of claim 1, wherein said second drive motor has a second transmission assembly connected to said second transmission unit. 2. A triaxial planetary mixer according to claim 1, wherein said expansion tank has a communication passage communicating with the inside of said gearbox. 2. The three-axis planetary mixer of claim 1, further comprising a counterweight within said gearbox. 3. The three-axis planetary mixer of claim 1, wherein said first drive motor comprises a slow speed assembly. 2. A triple-screw planetary mixer according to claim 1, wherein said high speed stirring assembly is a stirrable assembly such as disperser blades, butterfly blades, paddle blades, disc blades or bar blades. 3. The triple-screw planetary mixer of claim 1, wherein said slow stirring assembly is a straight frame blade or a helical blade.

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