JPH01287794A - Granule raw material payoff device of automatic vending machine - Google Patents

Abstract

PURPOSE:To reduce variance in the payoff amount of a raw material and to stabilize article quality by forming plural blades which differ by a specific angle in the rotating direction of a screw at the payoff-side tip part of the screw. CONSTITUTION:The screw 2 is so constituted that a 2nd blade 10 has the same pitch with a blade (1st blade) 6 is fixed on a shaft 7 on the payoff side while made 180 deg. different. Even if the tip A of the 1st blade 6 stops at a horizontal position, the tip B of the 2nd blade 10 pushes out a part of the raw material as an error component toward a right above position right before the blade stops, so that it falls by flowing. Therefore, the error quantity which is generated actually is made less than before and even if the tip of one blade passes the right above position and stops without stopping at the right above position, the tip of a following blade approaches the right above position to push out the raw material which is to stay without flowing corresponding to the error, thereby discharging it. Consequently, the article quality is stabilized.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a powder raw material dispensing device for cutting raw materials using a screw.

BACKGROUND OF THE INVENTION In a vending machine that dissolves granular raw material in hot water and dispenses it into a cup, the dispensing device for granular raw material is constructed as shown in FIG. Powder raw materials are stored in powder raw material tank 1.
A screw 2 for cutting out the raw material is provided at the bottom of the granular raw material tank (hereinafter referred to as raw material tank) 1. The base end of the screw 2 passes through the raw material tank 1 and is pulled out to the outside, and is driven by a motor 3.

A cap 5 having a rounded weir plate 4 to prevent the raw material from flowing out is attached to the outlet of the raw material tank 1. When the screw 2 rotates in the direction of arrow C, the required amount of raw material passes over the weir plate 4. paid out.

The screw 2 has one blade 6 of a fixed pitch fixed to a shaft 7, as shown in FIG.

Problems to be Solved by the Invention In such a conventional configuration, there is a problem in that the amount of dispensing varies depending on the stop angle of the screw 2.

In other words, when the tip A of the blade 6 stops at a position directly above as shown in Figs. However, as shown in FIGS. 6 and 7, if the tip A of the blade 6 stops at a horizontal position or in front of you directly above, as shown in FIG. The flow of the raw material stops at the repeller μ9 above the raw material surface 8, and the difference between the first surface 9 and the raw material surface 8 becomes an error in the dispensed amount.

Such an error does not occur when the screw 2 is rotated a whole number of revolutions, but if there is less than one revolution, such as 31 revolutions, the payout will occur at least once every several sales operations. Errors occur and product quality is unstable.

SUMMARY OF THE INVENTION An object of the present invention is to provide a powder dispensing device that can significantly reduce the above-mentioned dispensing errors even when the screw rotation is not an integral number of rotations.

Means for Solving the Problems The powder and granular raw material dispensing device of the present invention is characterized in that a plurality of blades are formed at least at the tip of the dispensing side of the screw for cutting out the raw material, and are shifted by a predetermined angle in the direction of rotation of the screw. Features.

Effect: According to this configuration, even if the tip of one blade does not stop at the directly above position but passes and stops, the tip of the succeeding blade approaches the directly above position and the error that remains without flowing down is removed. Push out the raw material and discharge it.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3. Components having the same functions as those in FIG. 4 showing the conventional example will be described with the same reference numerals.

FIG. 1 shows a granular material dispensing device of the present invention, and the shape of the screw 2 is different from FIG. 4 showing a conventional example.

Here, as shown in FIG. 2, the screw 2 has a second blade 10 with the same pitch as the blade 6 (hereinafter referred to as the first blade) fixed to the shaft 7 at the tip on the dispensing side, with a 180° deviation. ing.

Because of this configuration, even if the tip A of the first blade 6 stops at a horizontal position as shown in FIG. 3, the tip B of the second blade 10 will move directly upwards just before it stops. Since the part of the raw material that would have caused the error is pushed forward and flows down, the amount of error that actually occurs can be reduced compared to the conventional method.

In the embodiment L, the second blade 10 is provided only at the tip, but the first blade 10 is provided over the entire length of the screw 2. Second feather 6.
The same is true for multiple screws formed with 10.

In the above embodiment, the first. The explanation has been given using the case of two second blades 6.10 as an example, but by providing three or more blades, the amount of error can be further reduced and the quality of the product can be made more uniform. can.

Effects of the Invention According to the present invention, since a plurality of blades are formed at least at the distal end of the screw on the dispensing side and are shifted by a predetermined angle in the direction of rotation of the screw, the blades are rotated twice or more per one rotation of the screw. This allows the raw materials directly above to be pushed forward and flowed down, reducing variations in the amount of discharge and contributing to stabilizing the quality of the product.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of an embodiment of the powder material dispensing device of the present invention, Figs. 2 and 3 are perspective views of the screw at each stop position in the device, and Fig. 4 is a conventional one. 5 and 6 are perspective views of the screws at each stop position in the conventional device, and FIG. FIG. 3 is a partially cutaway front view illustrating the remaining state. DESCRIPTION OF SYMBOLS 1... Raw material tank, 2... Screw, 6... First blade, 10... Second blade. Agent Yoshihiro Moriki N.K. False diagram

Claims (1)

[Claims] 1. A granular raw material dispensing device configured to cut out and discharge the raw material in the raw material tank with a screw, and having a plurality of blades deviated by a predetermined angle in the direction of rotation of the screw formed on at least the distal end of the screw on the dispensing side. .