JPH0396821A - Automatic measuring instrument - Google Patents

Abstract

PURPOSE:To take an accurate measurement by arranging a curved guide plate a constant gap below in the rotating direction of a drum where many feed claws are erected, arranging its tail edge slightly in an upward direction from the lowest point of the drum, and providing many scrape-out rollers nearby in opposition relation. CONSTITUTION:The drum 2 is rotated while the opening/closing plate 12 at a discharge opening 9 is held open and when a body to be measured is fed into a hopper, the body to be measured is sent in a rotating direction (a) being caught by the feed claws 3 on the peripheral surface of the drum 2 to form quantitative capacity while passing into a nearly 180 deg. arcuate path formed in a constant gap (g) with the curved guide plate 4. Then the body to be measured is discharged toward the discharge opening 9 with the scrape claws 6 of scrape rollers 5 where the tail edge of the curved guide plate 4 is passed. Consequently, the body to be measured is measured uniformly and efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic weighing device particularly suitable for use with highly viscous flexible substances.

(Prior art) Foods with particularly high viscosity and size (such as tsukudani kelp)
It is extremely difficult to properly measure a fixed amount of food, each of which is unique (size, small, long or short), so weighing is done exclusively by hand.

In recent years, there has been a proposal in Japanese Utility Model Application No. 131901/1983 to perform automatic mechanical weighing in order to improve productivity.

(Problems to be Solved by the Invention) Utility Model Application No. 121901/1983 contributes to improving productivity by eliminating the hassle of manual work. Two drums are rotated eccentrically and a scratching claw is inserted. This makes the structure complicated, and there is a problem in that the object to be measured gets stuck in the pawl groove, resulting in trapping.

The object of the present invention is to minimize such operational troubles and to enable accurate automatic weighing.

(Means for Solving the Problems) A curved guide plate is disposed at a constant gap within a range of at least 180° along the rotational direction of a drum having a large number of feed pawls erected on the outer peripheral surface, and The terminal edge is arranged to rise slightly upward from the lowest point of the drum, and a scraping roller having a large number of scraping claws on the circumferential surface is provided in an opposing state in the vicinity of the casing. .

(Embodiment) FIG. 1 is a partial cross-sectional view of an automatic metering device according to the present invention, in which 1a and 2b are hopper side wall plates, and 2 is a drum disposed below the hopper side wall plates. On the outer peripheral surface of the drum, a large number of feeding pawls 3 with a constant height dimension are planted at equal intervals in the radial direction, and the hopper side wall plates 1a and 1b are arranged in the direction of rotation of the drum 2 (indicated by the arrow). ) along the upper portion thereof at a slightly inclined angle (ρ approximately 0° to 30°).

Reference numeral 4 denotes a curved guide plate which is shaped into an arc concentric with the outer peripheral surface S of the drum at approximately 180° along the rotational direction (A) of the drum l from the lower edge of the front hopper 1a, and the inner peripheral surface f. ,
The gap f between the drum outer circumferential surface S and the feed pawl 3 is slightly larger than the height h of the feed pawl 3.

Reference numeral 5 denotes a scraping roller disposed near the terminal edge of the guide plate 4, and a large number (eight) scraping rollers are provided on the circumferential surface of the roller so as to protrude at a certain height. A claw 6 is provided. child! The protruding height h1 of the scraper 6 is set to be as close to the outer peripheral surface S of the drum 2 as possible.

Reference numeral 7 denotes a scraper scraper provided between the scraping claws 6 on the side of the scraping roller 5 facing the drum 2 in order to facilitate the removal of objects to be weighed that adhere to each claw and the drum surface. The scraping claw nucleator 7 has an upper end fixed to a support plate 8 protruding from the device frame side, and a central portion shaped into an arcuate surface that coincides with the circumferential surface of the scraping roller 5, and has a large number of holes extending downward. In addition to being shaped like a strip of paper, there are scraping claws 6 (
3) It is made to intervene (see Figure '3),
The lower end is arranged to hang vertically into the discharge port 9.

Reference numeral 10 denotes a drum scraper, which has a shape that covers the upper part of the scraping pawl 6 of the scraping roller 5 on the side facing the drum 1 in an arc shape, the upper end is fixed to the support plate 8, and the lower half has a large number of It is shaped like a strip so that the feed pawl 3 on the circumferential surface of the drum 2 which rotates between adjacent slits Fkl of each strip passes through, and the tip is in contact with the outer circumferential surface S of the drum. .

Reference numeral 11 denotes a scraper for a scraping roller, and on the side of the scraping roller 5 opposite to the scraping nail scraper 7, the upper end is not fixed to the support plate 8, and the lower half has a large number of scraping claws. It is shaped like a strip and has a length such that the tip edge contacts the roller surface, and a scraping claw 6 is interposed between each adjacent slit.

12 is an opening/closing plate for the discharge port 9, which is arranged on the side (4). Reference numeral 14 denotes a measuring device disposed at a lower position, and a measuring container 14a, a load sensor 14b, and a bottom opening/closing cylinder 14C operate to open the bottom lids 14e and 14e' via the bottom lid opening/closing arm 14d. ing.

Next, the effect will be explained. When the drum 2 is rotated with the opening/closing plate 12 of the discharge port 9 open and an object to be weighed is introduced into the hopper 1, the object to be weighed is caught by the feed pawl 3 on the circumferential surface of the drum 2 and rotates. Since it is sent in the moving direction (a) and forms a quantitative volume while passing through an arcuate path of approximately 180° defined by a constant gap g with the curved guide plate 4,
At its terminal end, it is scraped out by a scraping claw 6 of a scraping roller 5. Specifically, the object to be weighed is discharged toward the discharge port 9 by the scraping pawl 6 of the scraping roller 5 at the point where it passes the terminal edge of the curved guide plate 4 .

At this time, a drum scraper 10 having a side-covering shape is provided at the upper part of the side facing the scraping claw 6 and the drum 2, and the tip thereof is provided so as to be in contact with the drum circumferential surface S. Since the object to be processed on the surface of the drum 2 is continuously moved toward the scraping roller 5 side, the scraping action is effectively performed by the scraping claws 6. Therefore, the workpieces entangled with the feed pawl 3 and the scraping pawl 6 pass between the slits k formed in strips in the drum scraper 10, the scraping pawl, and the scraper 7, respectively, during the rotation process. Therefore, it will be effectively removed.

In this embodiment, the hopper side wall plates 1a and 1b are provided in a slightly inclined state in the direction of rotation of the drum 2. This is due to the fact that the hopper side wall plates 1a and 1b are provided in a slightly inclined state in the direction of rotation of the drum 2. It is excellent in that it can be carried out efficiently.

When a certain amount of the object to be weighed is discharged and dropped into the weighing container 14a, the rotation speed of the drum 2 is changed to feed the object in small quantities, and the amount is detected by the load controller 6D and v4b. Then, the opening/closing plate 12 moves and opens the discharge port 9.
Therefore, the bottom lid opening/closing cylinder 14C is operated to open the bottom ffil4e, 14e1 of the measuring container 14a.
The weighing plate 12 is opened and the weighed object is put into the lower packaging container. When the discharge is completed, the opening/closing plate 12 is closed again and the same operation as described above is repeated.

(Effects of the Invention) Since the inner plate 4 is arranged so that its terminal edge rises slightly upward from the lowest point of the drum, the object to be weighed is While passing through the curved guide plate 4, the object to be weighed is formed into a well-quantitated volume, and the object to be weighed is uniformly and efficiently weighed. However, arranging the curved guide plate 4 so that the end edge faces slightly upward from the lowest point of the drum is effective in preventing natural fall. This will greatly contribute to improving weighing accuracy.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional explanatory diagram of the automatic weighing device according to the present invention;
The figure is a cross-sectional view taken along line A-A in figure 1, and figure 3 is a cross-sectional view taken along line A-A in figure 1.
FIG. 4 is a partial cross-sectional view taken along line CC in FIG. 1. 2... Drum 3... Feed, Q Claw 4... Curved guide plate 5... Scraping roller 6...
Scraping claw 7... Scraping claw scraper 9... Discharge rl 10... Drum scraper 11... Scraping roller scraper 12... Opening/closing plate 14a... Measuring container 14b
...Load cell

Claims (1)

[Claims] (1) A curved guide plate is disposed at a certain interval within a range of at least 180° along the rotational direction of the drum, which has a large number of feed pawls erected on the outer circumferential surface, and its terminal edge is located at the bottom of the drum. An automatic weighing device that is arranged to rise slightly upward from a point, and has a number of scraping rollers facing each other on its circumferential surface in the vicinity.