JP2582365Y2 - Powder kneading equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for kneading powders and granules by a roller which is disposed in a kneading tank and revolves around itself.

[0002]

2. Description of the Related Art In the above-described kneading apparatus, a method of using an air spring instead of a coil spring, an air cylinder, or the like as a pressurizing means for the roller is disclosed in Japanese Utility Model Laid-Open No. 4-41724.
It is publicly known from Japanese Patent Publication No. However, this device has the following problems. That is, when the pressing force applied to the roller is changed, the slot in the upper part of the crank arm and the pin engaged in the slot, which are extended over the link connecting the air spring, come into contact with each other and move. Therefore, when the pressing force is increased, the crank arm and the pin are worn. The present invention has been made in view of the above-mentioned problems. Even if the pressing force of the roller is increased, the wear of the crank arm and the connecting pin is extremely small, and the crank arm can be easily rotated. It is an object of the present invention to provide a powder and particle kneading apparatus capable of performing the following.

[0003]

Means for Solving the Problems To achieve the above object, the powder and particle kneading apparatus of the present invention uses a horizontally oriented crank pin to a mounting head rotatably arranged via a rotating shaft. To rotatably support the bent portion of the crank arm, and connect a roller to the lower end of the crank arm so as to be vertically rotatable, and attach two air springs to the upper portion of the mounting head at an appropriate interval. And a long link and a short link are attached to the opposing surface of the opposing air spring, and the long link and the short link are rotated through a connection pin designated rotatably via a bearing. And the bearing is connected to the upper end of the crank arm.

[0004]

According to the present invention, by adopting the above solution, when the roller is moved up and down by the operation of the air spring, the connecting pin rotatably supported by the bearing rotates to form the long and short link and the crank arm. Is rotated so that the operation of these members is performed without any trouble, and wear due to sliding is reduced.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a rotating shaft 2 is provided upright through a bottom plate 1 constituting a kneading tank, and a mounting head 3 is provided at an upper end of the rotating shaft 2. On the front and rear surfaces of the mounting head 3, crank pins 4 and 4 'oriented in the front and rear direction are provided at target positions around the rotation shaft 2, and each of the crank pins 4 and 4' is formed in a square shape. The bent portions of the formed crank arms 5, 5 'are fitted and rotatably connected. Rollers 7, 7 'are vertically rotatably mounted and supported at the lower ends of the crank arms 5, 5' via crank shafts 6, 6 '. At the upper part of the mounting head 3, two brackets 8 and 8 are erected facing each other at an appropriate interval in the left-right direction. In addition, air springs 9 and 9 'are respectively attached (four in total). For convenience of explanation, the right air spring 9 in FIG. 1 is called a pressurizing air spring and the left air spring is called a lift air spring.

A long link 10 is connected to the lift air spring 9 in FIG. 1, and a short link 11 is connected to the pressurizing air spring 9, respectively, and is connected to the upper pressurizing air spring 9 '(left side) in FIG. A short link 11 'is connected to the lift air spring 9' (right side), and a long link 10 'is connected to the lift air spring 9' (right side). The long links 10, 10 'and the short links 11,
As shown in FIG.
Connection pins 13, 1 rotatably supported through 2 '
The bearings 12, 1 are rotatably connected via 3 '.
2 'is fixed to the upper ends of the crank arms 5, 5'. Air supply / discharge pipes 14, 14, 14 ', 14' are connected to the air springs 9, 9, 9 ', 9', and supply / discharge of compressed air is enabled through a switching valve (not shown). ing. Further, stopper bolts 15, 15 'for adjusting the clearance between the bottom plate 1 and the rollers 7, 7' are attached to the crank arms 5, 5 '.

[0007] The roller constructed as described above has a roller 7,
When a downward pressing force is applied to 7 ′, compressed air is supplied to pressurizing air springs 9 and 9 ′ to lift air springs 9 and 9 ′.
Vent the air. This allows long links 10, 10 '
And the short links 11, 11 'are lift air springs 9,
The upper end of the crank arm 5, 5 'moved to the 9' side is shown in FIG.
And the crank arms 5 and 5 'are forcibly moved in the left direction (the opposite side is operated in reverse) to move the crank arms 5 and 5'.
Rotate counterclockwise around the center to stop the stopper bolt 15
The rollers 7, 7 'are pushed down toward the bottom plate 1 until they hit the stopper (FIG. 1). At this time, the connecting pins 13, 13 '
Is slightly rotated by the movement of the links 10, 10 ', 11, 11', but is rotatably supported by the bearings 12, 12 'so that the rotation is performed without any trouble and the links 10, 10' are rotated.
There is no sliding wear with 10 ', 11, 11'. Conversely, when compressed air is supplied to the lift air springs 9 and 9 'and the air of the pressurizing air springs 9 and 9' is exhausted, the long links 10, 10 'are released.
And the short links 11, 11 'are pressurized air springs 9, 9'.
And the crank arms 5, 5 'are rotated clockwise about the crank pins 4, 4' to rotate the
7 ′ is pulled up in a direction to separate from the bottom plate 1. At this time, the connecting pins 13 and 13 'also rotate, but in the same manner as described above, the rotation is performed without any trouble and there is no sliding wear. In the above embodiment, the kneading apparatus having two rollers and a pair has been described. However, a kneading apparatus having one roller can be similarly implemented.

[0008]

As apparent from the above description, the present invention provides a mechanism for applying the pressure of the air spring to the roller, in which two long and short links are rotatably supported by a bearing for connecting the air spring. Rotatably connected via a pin,
Since the crank arm for applying pressure to the bearing is connected to the bearing, the movement of the link and the crank arm is facilitated, and the wear of the crank arm and the connecting pin is extremely reduced. The life of the pin and the pin can be greatly extended.

[Brief description of the drawings]

FIG. 1 is a cutaway front view showing a main part of a powder and particle kneading apparatus for carrying out the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 2;

[Explanation of symbols]

 2 Rotating shaft 3 Mounting head 4 Crank pin 5 Crank arm 7 Roller 9 Air spring 10 Long link 11 Short link 12 Bearing 13 Connection pin

Claims (1)

(57) [Scope of request for utility model registration] 1. A bent portion of a crank arm 5 is rotatably supported on a mounting head 3 rotatably disposed via a rotating shaft 2 via a crank pin 4 which is oriented in a horizontal direction. A roller 7 is vertically rotatably connected to the lower end of the arm 5, and two air springs 9, 9 are arranged on the upper part of the mounting head 3 at an appropriate interval to face each other. A long link 10 and a short link 11 are attached to opposing surfaces of the air springs 9, 9, and a connection pin 13 rotatably supported by the long link 10 and the short link 11 via a bearing 12.
A powder kneading device wherein the bearing 12 is connected to the upper end of the crank arm 5 via a rotatable connection through a shaft.