JPS60209287A - Screen machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sieve for sieving wheat flour and the like. More specifically, the present invention relates to a free-swing type sieve that uses a rotating shaft connected to a drive device to rotate the sieve.

Conventional 1 This type of device generally has a main body a with a pivot shaft 0 having a way b, as shown in FIG. The main body a is rotated and sieved by a sieving member such as a screen (not shown). 〇 indicates a belt, f indicates a bearing, and f indicates a hanging rod.

Such sieving machines are widely used.

However, the above-mentioned sieving machine has the following problems. That is, when the operation is stopped and started, the main body a exceeds the range of the predetermined turning movement and causes what is called a large shaking. Although this phenomenon occurs during startup, it is especially severe when the operation is stopped. And the above-mentioned sieving machine: M, @ As one form, it may start and stop frequently at small intervals - in such a case, when the operation is stopped, it cannot be restarted until Fushu 1 comes to a standstill. This results in loss of time and reduces one-work efficiency.

This invention was made to solve such problems. 1. This invention will be described with reference to the drawings. 2. In the off-line drawings, there is a screen 1 having a sieving member such as a screen,
Rotary wheels @#+3 and 1 provided on the main body 1 and connected to the drive device
In a sieving machine consisting of two balance weights 4.5 provided on the rotating shaft 3 so that the opening angle α can be freely changed, 1) the opening angle a of the two balance weights 4.5 is set in a direction in which the opening angle a becomes smaller at the time of startup; Furthermore, this sieve machine is characterized in that it is equipped with a device 6 for reducing the size in the direction of increasing size when the operation is stopped.

As an example, the device 6 is the third v! It is formed as shown in i. In the figure, reference numeral 9 denotes a shaft provided on the pivot shaft 3, and an auxiliary weight 10 is slidably provided on the shaft 9. 11.12 is a connecting rod, 13 is a fixing member for the shaft 9, 14 is a holding plate, and 15.16 is an oil damper. 19 in the spear 11ffi is hanging,
Indicates the lower rod. Further, although the driving device is a motor, illustration thereof is omitted.

When the rotating shaft 3 is rotated in the direction of arrow A'3 by the drive device, the balance weights 4.5 approach each other so as to narrow the opening angle a due to the starting torque of the drive device. The balance weight 4 is fixed to the pivot shaft 3, and the second balance weight 5 is rotatably disposed on the shaft. The shaft 9 is also swingably provided on the pivot axis 3.0 And when the opening angle α is narrowed -
As shown in Figure 4, it is formed to be fixed in its open angle e & narrowed state, and is automatically fixed.

In the same figure, the holder is an arc-shaped guide fixed to the pivot shaft 3, and the guide is provided with a notch-shaped engagement portion 21 as shown in Fig. 6. A hook is attached to the second balance weight 5 and fished. This hook is always urged in the direction of applying the guide by the spring force.

Therefore, when the rotating part 21 reaches the engaging part 21, the rotating part 2
1, the second balance weight 5 is fixed at the + position. 2 shows the fixing device thus formed.

Next, to explain the case of releasing the fixation by the above-mentioned fixing part [24], it is necessary to release the release member shown in FIG.
This is done by rotating in 25 directions. The member 5 is rotated by an air cylinder 26 shown in FIG. That is, as a result, the force A27 rotates in the direction indicated by the arrow 27 from the axis fulcrum row, and the follower 4 is rotated in the direction indicated by the arrow 4.

As a result, the release member 25'Ik rotates as described above, releases the engagement of the hook n, and releases the fixation. This cancellation occurs almost simultaneously with the suspension of operation.
Or after a few seconds to 10 seconds have passed.

to be done. In this way, by identifying the opening angle α at a constant value and releasing it at an appropriate time when the operation is stopped, large shaking of the main body 1 can be better prevented.

Next, both weights are 4.6y! #The method d for changing the opening angle aW so as to bring them closer or farther away from each other is as follows:
Although the centrifugal force was used to create the auxiliary way (auxiliary way) 10, this is just an example and is not limited to this. ◎ This sieving machine is constructed in KW as described above, and the balance weight 4.5 is set in the direction in which the iM angle a becomes smaller when starting up, and in the direction in which it becomes larger when stopping operation. Since the opening angle α of the balance weight that controls the rotational movement of the main body 1 can be changed when starting and stopping the operation, large shaking of the main body 1 can be prevented.

[Brief explanation of the drawing]

Figure 1 is a plan view of a part showing the outline of a conventional sieving machine, Figures 2 and 3 show examples of the present invention, Figure 2A is a front view of the sieve, and Figure 3 is a partial plan view of the sieve. Figures 1 and 1'4 are off-line views taken from the l/-M line, Figure 5 is a V-VS arrow view of 7rA, Figure 16 is an enlarged view of the portion shown in Figure 4, and off-line views are of the sieve. FIG. 3 is a side view of a portion of the machine. 1...Main body 3...Swivel axis 4.5...Balance weight 6...Device for changing the opening angle α...Opening angle

Claims (1)

[Claims] In a clearing machine consisting of two balance weights,
A sieve machine characterized by being provided with a device that changes the opening angle of the two balance weights in a direction in which the opening angle becomes smaller when starting up and in a direction where it becomes larger when stopping operation.