JPH0144090B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that raw material particles that require fine grinding or ultrafine grinding, such as new ceramic raw materials, and grinding balls are placed in a grinding container in a pot, and the fine grinding container is rotated. This device performs pulverization by rotating the pot in an inverted conical shape rather than simply rotating on its own axis based on the revolution of the table. It is designed to match the rotation speed.

As shown in Japanese Patent Publication No. 48-36381, a planetary type pulverizer is known in which a rotary table is revolved and a pot provided on an eccentric portion of the table is rotated. However, the known device does not show a configuration in which the pot rotates on its own axis in an inverted conical trajectory. The present invention embodies this with a unique mechanism.

Next, one embodiment of the present invention will be described.

1 and 2 illustrate a longitudinal side view of the pulverizing device 1 of the present invention, in which a rotating table 3 for revolution fixed to the upper portion of the device case 4 is provided in the upper part of the stand 2,
A rotating drive tube shaft 5 is fixed by a chain wheel 6 on which a chain 23 is hung at the center of the lower surface of the device case 4. The lower end of the drive tube shaft 5 is externally fitted onto a non-rotating shaft 7 fixed to the stand 2, and the drive tube shaft 5 is supported by the non-rotating shaft 7 together with the rotary table 3, the device case 4, etc. via a bearing 8. The non-rotating shaft 7 is hollow, and a central shaft 9 for rotating the pot shaft, which projects to the lower side of the table 2, is inserted into the center of the non-rotating shaft 7 through a bearing 10 so as to rotate freely.

Several pot support shafts 12 at equal angular intervals are rotatably supported by bearings 13 at an eccentric portion around the center of the rotary table 3 on a virtual circle 11 (see FIG. 3) centered on the center of the table. and insert it. The pot support shaft 12 has a tubular shape.

Reference numeral 15 denotes a pot into which the pulverization container a is taken out and freely inserted, and a shaft 16 protruding from the center of the bottom surface is attached to the upper end of a pot drive shaft 18 which is rotatably inserted through the center of the pot support shaft 12. Free joint 2
0, and the inclined surface of the lower surface of the ring 14 provided on the outer periphery of the shaft element 16 via a bearing 17 is joined to the upper end surface of the pot support shaft 12 to tilt the pot 15.

A chain ring 21 having the same number of teeth as the chain ring 6 is fixed to the part of the pot shaft rotation center shaft 9 that protrudes from the lower end of the non-rotating shaft 7, and a motor 2 is attached to the lower side of the stand 2.
2 through chains 23, 24 to chain rings 6, 2.
1. Rotate the drive tube shaft 5, the device case 4, and the pot shaft rotation central shaft 9 at the same axial speed and in the same direction. In addition, a chain ring 25 for pot rotation is fixed to the upper end of the central shaft 9 for rotating the pot shaft that protrudes from the non-rotating shaft 7, and a fixed chain ring 26 for swinging is fixed to the upper end of the non-rotating shaft 7 that protrudes into the device case 4. establish. A rotation chain ring 27 is fixed to the lower end of the pot support shaft 12 at the same level as the pot rotation chain ring 25 and has one tooth more or one tooth less than the chain ring 25, and supports the pot drive shaft 18. An interlocking chain ring 28 made at the same level as the fixed chain ring 26 for swinging is fixed to a part projecting downward from the shaft 12. Endless chains 29 and 30 forming an interlocking rotation mechanism are connected to a rotation chain ring 27 that engages the entire pot rotation chain ring 25, and an interlocking chain ring 28 that engages the fixed chain ring 26 and the entire oscillation chain ring 26. Hang each piece as shown in the diagram. As shown in the figure, one tension chain ring 31, 32 is attached to each of the endless chains 29, 30.

In this embodiment, each pot 15 contains crushed material b,
Grinding container a containing grinding balls c (ideally, grinding balls c and grinding container a should be made of material with the same properties as the grinding material b, hardened by compaction, etc., but there are exceptions. ), and after fixing the crushing container a with the fastener 33, the motor 22 is started. At this time, the drive tube shaft 5 and the pot shaft rotation central shaft 9 rotate concentrically at the same shaft speed, and the rotary table 3 rotates concentrically at the same shaft speed.
revolves around the drive tube axis 5. The pot rotation chain ring 25 fixed to the pot axis rotation center shaft 9 and the rotation chain ring 27 fixed to the pot support shaft 12 have slightly different tooth ratios. If the number of teeth is slightly small, the endless chain 29 rotates at a slow speed in the same direction as the revolution rotation direction of the rotary table 3 (for example, clockwise direction), and if the number of teeth is slightly large, it rotates in the opposite direction (for example, counterclockwise direction). ) rotates at a slow speed. On the other hand, the pot drive shaft 18 rotates along with the revolution of the rotary table 3, and rotates the interlocking chain ring 28 around the swinging fixed chain ring 26, so that the endless chain 30 causes interlocking rotation. The shaft element 16 of the pot 15, which is connected to the pot drive shaft 18 by a free joint 20, is in contact with the pot support shaft 12 on the lower slope of the ring 14. Since the systems and drive speeds are different, the pot 15 and ring 14 swing and rotate conically on the upper surface of the pot support shaft 12. Therefore, the crushed material b and the crushed balls c stored in the crushed container a are transferred to the pot 15.
The powder flows in a waveform in the crushing container a as it oscillates and rotates.

Rotation speed of pot support shaft 12 and pot drive shaft 1
Since the number of swing rotations of 8 is not the same,
The trajectory 41 of the flow changes into a spiral shape as illustrated in FIG. 4, and the rotational movement of the crushing material b in the crushing container a of the crushing ball c follows the trajectory 41 in FIG. 4. For this reason, the above-mentioned conical oscillation and rotation of the pot 15 becomes complicated, and the crushing efficiency is significantly improved.

The present invention has the configuration illustrated above, in which a rotary table 3 and a drive tube shaft 5 provided on the bottom surface of the device case 4 are passed almost concentrically in order to revolve the rotary table 3 and the device case 4 on which the table 3 is attached. The rotary table 3 is driven by the central shaft 9 for rotating the pot shaft.
The pot drive shaft 18 passed through the pot support shaft 12 passed through an eccentric position, and the shaft 1 on the bottom surface of the pot 15.
6 by a free joint 20, and a ring 14 rotatably provided on the outer periphery of the shaft element 16.
By using a special structure in which the inclined surface of the lower surface contacts the upper surface of the pot support shaft 12, the pot 15 does not simply rotate on its own axis, but also causes an inverted conical oscillating rotation. 3, and as a result, the pulverization efficiency of the pulverized material b can be improved as mentioned above, making it suitable for industrial use. .

[Brief explanation of drawings]

The accompanying drawings show an embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional side view of the entire device, FIG. 2 is an enlarged vertical cross-sectional side view of the same part, and FIG. 3 is a plan view cut along the line AA in FIG. 1.
FIG. 4 is a plan view illustrating the locus 41. 1→Fine grinding device, 3→rotary table, 5→drive tube shaft, 6→chain ring, 7→non-rotating shaft, 9→center shaft for pot shaft rotation, 12→pot support shaft, 14→ring, 15→pot , 16 → shaft element, 18 → pot drive shaft, 20 → free joint, 21 → chain ring, 22 → motor, 25 → pot rotation chain ring, 26 → fixed chain ring for swinging, 27 → bicycle chain ring, 28 →Interlocking chain ring, 2
9,30→Endless chain.

Claims (1)

[Claims] 1 A drive tube shaft 5 for revolving the rotary table 3 is fixed to the center of the lower surface of the device case 4 with the rotary table 3 attached to the upper surface, and a non-rotating tube shaft 7 is fixed inside the drive tube shaft, and a non-rotating tube shaft 7 is also fixed inside the drive tube shaft. The central shafts 9 for pot shaft rotation are inserted into the shafts 7 almost concentrically, and several hollow pot support shafts 1 are inserted into the eccentric part of the rotary table 3.
2 are inserted at approximately equal angular intervals, and a pot drive shaft 18 is inserted freely into each center of the pot support shaft 12, and the drive shaft 18 and the shaft element 16 on the lower surface of the pot 15 are connected by a free joint 20. A rotatable ring 14 that is connected and further has the shaft 16 fitted therein.
The inclined surface provided on the lower surface of the pot 1 is connected to the upper surface of the pot support shaft 12, and the pot support shaft 18 and the pot 1 are connected to each other via an interlocking device by the central shaft 9 for rotating the pot shaft.
5 is rotated by an interlocking device provided between a non-rotating shaft 7 and a pot drive shaft 18 to generate an inverted conical oscillation rotation.