JPH059066Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a planetary mixer that can knead materials to be processed by using planetary moving blades.

Conventional planetary mixers have two blades that move planetarily inside the tank, so the load that acts on each blade during processing is different, acting as an unbalanced load on the stirring shaft, and causing vibration and other negative effects. may be given. Furthermore, when processing highly viscous materials, there was a risk that the materials would aggregate into columnar shapes, making it impossible to apply sufficient shear force.

In view of these circumstances, the present invention is a planetary mixer that allows the blades to do equal work at the same time, suppresses the occurrence of unbalanced loads, and enables uniform mixing and stirring of materials without clumping them into columns. This is related.

The planetary mixer of the present invention has three driven shafts mounted on a rotary plate fixed to a driving shaft at equal intervals around the driving shaft, and a planetary gear is provided at the tip of the driven shaft. The planet gear is engaged with the sun gear, and a blade is provided at the lower end of the driven shaft so as to move close to the inner wall of the tank.

The planetary mixer of the present invention has three blades located inside the tank that apply strong shear force to the material between the blades, the tank wall, and the blades, allowing the material to be dispersed (wet powder frame), kneaded, etc. , each blade performs a similar movement,
The load acting on each axis is always in the same state, and it is possible to prevent uneven loads from occurring.

This will be explained below along with examples.

In the figure, the main body 1 includes a removable tank 2.
A stirring head 3 is formed on the tank. The stirring head 3 is guided by a guide rod 4 and raised and lowered by a hydraulic cylinder 5, but sometimes two hydraulic cylinders are provided in the form of a gate for raising and lowering. The stirring head is provided with a motor 7 for rotating a drive shaft 6. The transmission mechanism from the motor to the drive shaft can be configured in various ways, and in the figure, a drive sprocket 8 provided on the motor shaft is used.
and a driven sprocket 9 provided on the drive shaft are connected by a chain 10.

The drive shaft 6 is inserted into a support cylinder 11 fixed to the stirring head 3, and the upper and lower parts are supported by bearings 12, 1.
3, it is rotatably supported. A rotary plate 14 is fixed to the lower end of the drive shaft 6 with a key 15. The circumferential edge of the rotary plate is formed into a cylindrical shape and extends upward, and a rotatable plate 14 is fitted around the support cylinder 11. Lid plate 1
6 is screwed on. The rotating plate 14 has three driven shafts 17, 1 surrounding the driving shaft 6.
7 and 17 are attached to the shaft. The driven shafts are arranged so that each shaft is located at each vertex of an equilateral triangle when viewed from a plane (Fig. 3), and bearings 18,
It is rotatably supported by 19. A planetary gear 20 is fixed to the tip of the driven shaft 17 with a key 21, and the planetary gear engages with a sun gear supported by the support tube 11. In the figure, the sun gear uses an internally toothed sun gear 22 fixed to the support cylinder 11 so as to surround the planet gear, but if desired, the sun gear can be placed at the tip of the support cylinder so as to be located at the center of the planet gear. may also be provided (not shown).

A blade 23 is attached to the lower end of each driven shaft 17 with a key 2 so as to move close to the inner wall of the tank.
It is attached by 4. As shown in FIG. 3, the blade can have various structures in which one side is close to the inner wall of the tank and the other side has a diameter extending to the center of the tank, but in the figure, a frame-shaped blade is used. , three blades are provided in a radial relationship as shown in FIG.
Although it is configured in a twisted shape, it may be a simple frame shape without twisting. The outer periphery of the rotating plate is surrounded by a cover 25 attached to the stirring head 3.

When the material to be treated is placed in the tank 2 and the stirring head 3 is lowered, the blade 23 revolves and rotates on its own axis within the tank. , the directions of revolution and rotation are opposite. Since the blade moves planetarily in close proximity to the inner wall of the tank, a strong shearing force is applied to the material between the blade and the tank wall and between the blade and the plate, allowing for sufficient dispersion, stirring, kneading, etc. can do. Since each of the three blades moves in the same way, the three driven shafts are equally loaded and can be used with confidence without causing unbalanced loads. It doesn't feel like it's coming together.

The present invention is constructed as described above, and three driven shafts are attached to the rotary plate, and blades are provided on each of the driven shafts.The three blades rotate on their own axis while revolving inside the tank, and move the objects to be processed. Stirring and kneading, at this time, the driven shafts surround the drive shaft, each shaft is located at the apex of an equilateral triangle when viewed from the plane, and the three driven shafts are located at equal intervals around the drive shaft. The load is applied evenly to the shaft, there is no unbalanced load, and negative effects such as vibration can be prevented.In addition, the diameter of the blade has been adjusted so that one side is close to the inner wall of the tank and the other side extends to the center of the tank. The planetary motion of the blade applies a strong shearing force to the workpiece between the blade and the inner wall of the tank and between each blade, and the blade also applies shearing force at the center of the tank. It is possible to efficiently process even highly viscous materials without causing the materials to clump together into columns.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway front view, FIG. 2 is an enlarged sectional view of the drive shaft portion, and FIG. 3 is a plan view showing the relationship between the blades. DESCRIPTION OF SYMBOLS 1... Main body, 2... Tank, 3... Stirring head, 6... Drive shaft, 11... Support tube, 14... Rotating plate, 17... Driven shaft, 20... Planetary gear, 22
...Internal sun gear.

Claims (1)

[Scope of utility model registration request] A support cylinder is provided in the stirring head located on the tank, a drive shaft is inserted into the support cylinder, a rotary plate is fixed to the drive shaft, and the rotary plate surrounds the drive shaft so that each axis is correct when viewed from a plane. Three driven shafts are mounted at the vertices of the triangle, a planetary gear is provided at the tip of the driven shaft, and the planetary gear is engaged with a sun gear supported on the support tube. A planetary mixer having a blade at the lower end with a diameter such that one side is close to the inner wall of the tank and the other side extends to the center of the tank.