JPH021245B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic weighing device that automatically feeds a directional linear article and weighs it so that it has a predetermined set weight.

For example, when automatically weighing a directional linear article (hereinafter simply referred to as an article) such as dried noodles,
It is important to supply and measure items without losing their orientation.

Conventionally, the articles are conveyed from a supply trough while being aligned by a vibrating feeder, and a provisional amount close to a set amount is supplied to a sub-hopper for volume metering.
Next, the article is supplied from the sub-hopper to the weighing hopper, weighed in the weighing hopper, and a minute amount minus the set weight is supplied by another feeding mechanism, and after the article reaches the set weight in the weighing hopper, the article is weighed in the weighing hopper. An automatic weighing device is used that discharges articles from a container.

By the way, in order to improve the weighing capacity of such an automatic weighing device, it is necessary to efficiently feed a provisional amount of articles from the supply trough to the sub-hopper, but conventionally, this is done by vibration, which reduces the weighing capacity. It was difficult to improve.

In view of the above-mentioned problems of the conventional automatic weighing device, this invention improves and eliminates the problems, and stores the articles supplied from the supply trough at the tip of the trough,
By supplying the stored articles to the sub-hopper using a lifter that performs a combination of vertical movement and front-back rocking movement, the articles can be quickly and reliably fed.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a supply trough, which is appropriately vibrated by a vibrating feeder (not shown) and conveys the article A forward. Reference numeral 2 denotes a sub-hopper provided in front of the supply trough 1, which is composed of a bottom plate 3 arranged at an angle and a front plate 4 arranged in front opposite to the bottom plate 3, and the interlocking portion of the two is hawked. The hawk parts intersect with each other to form a triangular article storage part 5, and an upper input port 6 is formed.
is arranged above the supply trough 1. The front plate 4 is a frame 8 that is swingably supported on a support shaft 7.
The upper end is aligned with the frame 8, and is supported through an adjustment screw 9 attached to the frame 8. The sub-hopper 2 is opened and closed by swinging of the frame 8, and the front plate 4 is moved back and forth by turning the adjustment screw 9. The capacity is made variable. The capacity of the sub-hopper 2 is adjusted to a capacity that accommodates a provisional amount of articles A supplied so as to fill the sub-hopper 2 so that the weight is close to the set weight (usually slightly less than the set weight). 10 is supply trough 1 and sub hopper 2
The tip of the storage section 10 is shielded by a bracket that supports the bottom plate 3 of the sub-hopper 2, and there are two brackets on both sides of the bracket that support the article. Support plates 11 are arranged in parallel with a predetermined interval, and the gap between the support plates 11 is used as a passage for the lifter 17. Reference numeral 12 represents a pool hopper disposed at the lower part of the sub-hopper 2, and reference numeral 13 represents an opening/closing lid for opening and closing the pool hopper 12. 14 is a weighing hopper disposed below the pool hopper 12, and 15 is an opening/closing lid for opening and closing the weighing hopper 14. Reference numeral 16 denotes a weighing mechanism for weighing the article I in the weighing hopper 14. 17
2 is a lifter that supplies articles A on the storage section 10 to the sub-hopper 2, and as shown in FIGS. 2 and 3, the upper end surface 18 is formed into a rectangular cross section with an inclined surface downward from the front. A flange 19 is formed on the flange 19 to cut the edge of the article A on the side of the supply trough 1, and is fixed to the upper part of a bracket 20 bent into a portal shape. The bracket 20 is a swinging link of a double lever mechanism provided at the lower part of the supply trough 1, and the double lever mechanism includes a first lever 22 pivotably mounted on a frame 21, and a lever 22. A second lever 23, which is shorter than the lever 22, is pivotably attached to the frame 21 below. 24 is a hanging rod connected to an appropriate location of the first lever 22;
The lifter 17 is moved up and down by an appropriate driving means (not shown), and the lever 22 is swung about the joint with the frame 21 as a fulcrum to move the lifter 17 up and down.

When the lifter 17 operates, the tip of the first lever 22 traces a trajectory shown by a dashed line, and the second lever 2
The tip of No. 3 draws a locus shown by a two-dot chain line. Therefore, the lifter 17 is moved by the upward movement of the first lever 22.
It rises while tilting forward.

Reference numeral 25 denotes an auxiliary supply trough for feeding a small amount of articles I into the weighing hopper 14.

In the above structure, the function is explained as follows: the lifter 17 waits below, the supply trough 1 vibrates for a certain period of time, transports the articles A while aligning the directions, and stores an appropriate amount of articles A on the storage section 10. let After that, pull up the hanging rod 24 and release the first and second levers 2.
2 and 23 to raise the lifter 17,
The upper end surface 18 of the support plates 11 and 11 is passed between them.
The provisional quantity is received at the sub-hopper 2, lifted along the back side of the sub-hopper 2, and thrown into the sub-hopper 2. After the lifter 17 has finished loading the article A, it descends and prepares for the next loading operation. Subsequently, the frame 8 is swung to open the front plate 4, and the article I is supplied to the pool hopper 12, and further from the pool hopper 12 to the weighing hopper 14.

In the weighing hopper 14, the weight of the article A supplied by the weighing mechanism 16 is measured, the difference from the set weight is determined, and based on this, the auxiliary supply trough 25 is operated to supply a small amount of article A to the weighing hopper 14. . When the set weight is reached, the opening/closing lid 15 is opened and the article I is discharged.

While the article A is being weighed in the weighing hopper 14, the supply trough 1 vibrates and the article A is supplied to the storage section 10, and the lifter 17 is raised to supply a temporary amount to the sub-hopper 2. Then, the front plate 4 is opened and the article A is fed to the pool hopper 12. When the article I is discharged from the weighing hopper 14 and the opening/closing lid 15 is closed, the pool hopper 12 opens the opening/closing lid 13.
is opened and the article A is fed to the weighing hopper 14.
Thereafter, the above-described operation is performed to discharge the article A of the set weight.

The above operations are repeated in sequence to weigh the article A and discharge the article A of the set weight.

When the lifter 17 supplies the article A to the sub-hopper 2, the lifter 17 rises and swings forward, so when receiving the article I from the storage section 10, it receives the article widely from the rear and approaches the sub-hopper 2 when rising. Since there is almost no gap with the lifter 17 to prevent the articles from falling off, a large amount of articles A can be supplied, and the supply to the sub-hopper 2 is also reliable.

Further, since the lifter 17 is tilted forward, the angle of inclination of the upper end surface 18 is also sharpened, so that the falling speed of the article is increased, the supply speed is increased, and the weighing ability is improved.

As explained above, according to the present invention, the articles conveyed by the vibration of the supply trough are stored in the storage section at the tip of the trough, and the stored articles are discharged all at once to the weighing hopper side by the lifter. Therefore, the ability to supply articles is improved, the amount of supply is also reliable, and the measuring ability is greatly improved. Further, since the lifter tilts forward when rising, the discharge from the lifter is ensured and no supply errors occur.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of an automatic weighing device according to the present invention, FIG. 2 is a side view of a lifter, and FIG. 3 is a front view of the lifter. 1... Supply trough, 2... Sub hopper, 10...
...Reservoir, 12...Pool hopper, 14...Measuring hopper, 16...Measuring mechanism, 17...Lifter,
22...first lever, 23...second lever,
25...Auxiliary supply trough.

Claims (1)

[Scope of Claims] 1. A supply trough that supplies a large amount of articles to a weighing hopper, and an auxiliary supply that supplies a small amount of articles to the weighing hopper while checking the weight of the articles in the weighing hopper to correct the amount of articles in the weighing hopper to a constant amount. In an automatic weighing device equipped with a trough, the tip of the supply trough on the large-volume supply side is shielded, and the tip protrudes from and retracts from the article conveying surface of the trough, and when rising, a predetermined amount on the trough is covered. An automatic weighing device characterized by being provided with a lifter that scoops up articles and discharges them to a weighing hopper side. 2. The automatic weighing device according to claim 1, wherein the lifter is fixed to a link of a double lever mechanism that tilts forward while rising.