JP2010189073A - Fixed quantity feeder device for powder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein powder remains in a weighing groove, by finally, surely and elaborately dropping the powder in a discharge part from the weighing groove of a supply board, by the most effective table feeder, in a fixed quantity feeder of the powder. <P>SOLUTION: This fixed quantity feeder device for the powder has a storage vessel of the powder, and is constituted of a driving part arranged under the storage vessel, the main shaft projected in the storage vessel from the driving part, an agitating means installed on the main shaft, a supply means installed on the main shaft under the agitating means, the supply board installed on a rotary shaft interlocked with the driving part and forming the weighing groove of the powder in a proper pitch on the peripheral edge and a discharge chute formed under the outer end of the supply board, and is provided so that the discharge chute has a means for forcibly dropping the powder of the weighing groove of the supply board to the discharge chute. The forcibly dropping means is formed as a scraper gear having on the peripheral edge a projecting tooth meshing with the weighing groove of the supply board, and rotating in the parallel direction to the supply board. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a powder quantitative feeder device, and in particular, a powder for accurately conveying a quantitative amount in a minute range of about 1 cc to 1000 cc per hour corresponding to various powders having different physical properties. This relates to a quantitative feeder apparatus.

  Conventionally, except for powders with particularly good fluidity, accurate and quantitative supply of powder in a minute range means that the physical properties of the powder, such as differences in specific gravity, particles, particle sizes, moisture and static electricity It is very difficult work because it is affected by adhesion and cohesiveness caused by the above.

  Conventionally, vibratory feeders, screw feeders, and table feeders are known as fine powder feeders. Of these, vibratory feeders can be used for powders with good fluidity, but applicable powders are limited. In addition, it is required to control the flow manually, and a sufficient amount of control is not possible, resulting in unevenness and poor accuracy. Another major bottleneck is the need to rely on human hands.

  In addition, in the case of screw feeders, both the horizontal and auger types, when the amount of powder to be transported becomes very small, the spiral screw groove becomes inevitably smaller in both width and depth. It becomes easy to cause adhesion and sticking of the powder, and the groove is filled and becomes a rod shape. Conversely, since the amount of the powder is small, the frictional force between the particles is insufficient, slipping and impossible to discharge. More cases.

  Furthermore, in the case of a table feeder, it has been experimentally found that it is the most effective and effective, but sometimes the powder remains in the measuring groove of the supply board and does not discharge, or returns to the container as it is. Will happen. Here, a method of blowing off with air blowing is also conceivable, but this may cause powder to scatter around and deteriorate the atmosphere, or cause powder to enter the machine components and cause a failure. There is also.

Application documents for Japanese Patent Application No. 2008-26044

  The problem to be solved by the present invention is the powder feeder, which is the most effective table feeder. Finally, the powder is surely and precisely dropped from the measuring groove of the supply board to the discharge part to measure the powder. The only technology that can solve the situation in which powder remains in the groove is that disclosed in Patent Document 1.

  In order to solve this problem, a powder quantitative feeder according to the present invention has a powder container, a drive unit installed below the container, and the container from the drive unit. A main shaft protruding into the main shaft, a stirring means attached to the main shaft, a supply means attached to the main shaft below the stirring means, and a rotating shaft linked to the drive unit; And a discharge chute formed below the outer end of the supply disc, and the powder in the measurement groove of the supply disc is placed on the discharge chute on the discharge chute. In the powder quantitative feeder device, forcibly dropping, the forcibly dropping means is provided with a protruding tooth on the periphery thereof that meshes with the measuring groove of the supply board. , Parallel to its supply panel Is characterized in that the rotating Sukurepagia to.

  Further, in the powder feeder according to the present invention, the scraper gear described above is characterized in that the rotational force of the supply plate is used as a drive source and rotates in synchronization with the supply plate. It is characterized by being an L-shaped round bar whose lower end is fixed to the main shaft.

  The powder quantitative feeder according to the present invention is configured as described above. For this purpose, the powder conveyed into the metering groove of the supply board can be pushed down by the teeth of the scraper gear, and the stirring means scrape the powder into a bridge in the powder container. It can be prevented by mixing.

It is the schematic which shows the fixed_quantity | assay feeder apparatus of the powder which concerns on this invention. It is a top view which shows the principal part.

  This was realized by configuring as illustrated in the drawings and described in the examples.

  Next, an example of a preferred embodiment of the present invention will be described with reference to the drawings. In these drawings, reference numeral 9 denotes a pedestal and fixedly supports the apparatus. A disk frame 10 is provided on the gantry 9.

  In the figure, reference numeral 8 denotes a motor, and a rotational force transmission gear 8b is provided on the shaft of a speed reducer 8a connected to the lower side of the motor 8. On the other hand, reference numeral 2 in the figure denotes a powder container (hopper) having a powder inlet 1 as a material opened upward. The container 2 has a straight cylindrical shape for the purpose of preventing powder bridging. However, it can also be formed in a cone shape and is configured to be attached to the disk frame 10 described above.

  A drive unit is provided below the container 2, and the drive unit has a stirring shaft (main shaft) 11 whose upper end projects into the container 2, and the lower end of the stirring shaft 11 has the gear described above. A gear for transmitting the rotational force from 8b and rotating the stirring shaft 11 is provided, and a transmission gear is interposed between this gear and the gear 8b.

  Above this stirring shaft 11, a substantially L-shaped stirring bar 3 made of a round bar is attached in the container 2. The stirring rod 3 rotates in synchronism with the stirring shaft 11 so that the powder is constantly stirred so that the powder is not bridged or adhered in the container 2. Further, a partition plate 12 is provided below the stirring bar 3 with a slight gap from the inner wall surface of the container 2, and the presence of the partition plate 12 can further prevent bridging and adhesion. .

  Further, on the lower end side of the agitation shaft 11, a supply means 4 for sending and supplying a fixed amount of powder into a measurement groove of a supply board described later is attached. A plurality of blade bodies 4a, 4a,... Are provided along the tangential direction of the stirring shaft 11, and the tangential edge of the blade body 4a pushes the powder by rotation.

  Further, a gear that transmits the rotational force from the motor 8 is attached below the gear that receives the rotational force of the stirring shaft 11, and this transmitted gear is a gear of the rotational shaft 5 a provided with the supply panel 5 at the upper end. The rotating shaft 5a, and thus the supply board 5 is rotated.

  The above-mentioned supply board 5 is formed of a disk, and has a substantially spur gear shape in which measuring grooves 5b, 5b,... The blade bodies 4a, 4a,... Are partly in sliding contact with the upper surface of the supply board 5, and the powder sent by the blade bodies 4a, 4a,. 5b... And the measuring grooves 5b, 5b.

  On the other hand, reference numeral 7 in the figure denotes a discharge chute, and the powder put in the measuring grooves 5b, 5b,... Of the supply board 5 is sequentially dropped from above the discharge chute 7 and discharged. That is, one of the measurement grooves 5b, 5b... Of the supply board 5 passes through the upper surface opening of the discharge chute 7 in sliding contact.

  Above the discharge chute 7, a forced discharge portion 6 is provided in the disk frame 10. In this embodiment, the forced discharge portion 6 uses a scraper gear, and the projecting teeth 6a, 6a,... Mesh with the measuring grooves 5b, 5b,.

  This scraper gear rotates synchronously with the supply board 5 by meshing the measuring grooves 5b, 5b... Of the supply board 5 with the projecting teeth 6a, 6a. That is, the scraper gear itself does not require a special rotational drive source. When the teeth 6a, 6a,... Mesh with the measuring grooves 5b, 5b, the powder remaining in the measuring grooves 5b, 5b, is forcibly pushed out or scraped off to the discharge chute 7.

  By this action, powder does not remain in the measuring grooves 5b, 5b, etc., and the precise amount is continuously discharged. Since this action is performed regardless of the physical properties of the powder, its use is not limited by the type of powder.

  The powder quantitative feeder according to the present invention is configured as described above. For this reason, the object is a powder that is not bound by physical properties, but it can also be applied to a wide range of viscous soils and creamy liquids as necessary. Can continue to discharge.

1 Input 2 Storage container (hopper)
DESCRIPTION OF SYMBOLS 3 Stirring bar 4 Supply means 4a Blade body 5 Supply board 5a Rotating shaft 5b Measuring groove 6 Forced discharge part (scraper gear)
6a teeth 7 discharge chute 8 motor 8a speed reducer 8b gear 9 mount 10 disk frame 11 stirring shaft 12 partition plate

Claims (3)

  A drive unit having a powder container, installed below the container, a main shaft protruding from the drive unit into the storage container, a stirring unit attached to the main shaft, and a stirring unit A supply means attached to the main shaft below the supply shaft, a supply plate attached to a rotary shaft interlocked with the drive unit, and a powder measuring groove formed on the periphery at an appropriate pitch, and below the outer end of the supply plate And a discharge chute formed on the discharge chute, comprising a means for forcibly dropping the powder in the measurement groove of the supply board onto the discharge chute on the discharge chute. In the feeder device, the above-mentioned means for forcibly dropping is a scraper gear provided with a projecting tooth meshing with the measuring groove of the above-mentioned supply board at the periphery, and rotating in a direction parallel to the supply board. Quantitative feeder Location.   2. The powder quantitative feeder according to claim 1, wherein the scraper gear rotates using the rotational force of the supply plate as a drive source in synchronization with the supply plate.   3. The powder quantitative feeder according to claim 1, wherein the stirring means is an L-shaped round bar having a lower end fixed to a main shaft.

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