JPS5818282B2 - vibration feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for storing, aligning, and transporting articles in an apparatus for processing and assembling articles.

Among conventional vibrating feeders, a vibrating feeder for achieving substantially the same purpose as the present invention is a container surrounding wall having a helical conveyance path 21 in which the bottom 19 of the container 18 is attached to a vibrating spring 20, as shown in FIG. There is a structure that is attached to an immovable base plate 22 separately from the base plate 22.

The characteristics of this conventional example are as follows: (a) The vibration conditions applied to the container do not change much depending on the number of objects to be transported in the container 18, and the transport speed remains almost constant.

(b) Since the transported articles stored in the container 18 are not subjected to unnecessary vibrations, the noise is small and the articles are less likely to be damaged.

(c) An auxiliary storage container 23 can be attached above the bottom 19 of the container to increase the storage capacity.

On the other hand, a problem with this conventional example is that the auxiliary storage container 23
When a storage container 23 is installed, the transported articles are sequentially supplied by the action of gravity through a gap 24 provided on the circumference between the lower end of the surrounding wall of this storage container 23 and the bottom 19 of the container. The storage container 23 provided above becomes an obstacle when assembling, adjusting, and maintaining the apparatus for sorting the posture of the transported articles.

(b) The gap 24 between the lower end of the surrounding wall of the storage container 23 and the bottom 19 of the container may become clogged, making it difficult to adjust the gap to maintain an appropriate supply amount.

(c) Since the articles supplied from the storage container 23 are dependent on gravity, the supply amount is not constant and becomes unstable depending on the quantity of articles.

Furthermore, if the storage container 23 is not attached, the storage capacity will be reduced.

The present invention addresses the problems (b) to (/) without losing the features (a) to (/→ of the conventional example), namely, obstacles in the use of storage containers, clogging of transported articles, and difficulty in adjustment. as well as,
This simultaneously solves the issue of supply instability.

Embodiments of the present invention will be described below based on FIGS. 1 to 6.

In FIGS. 1 and 2, 1 is an immovable substrate, 2 is a transport container having a spiral transport path 3 provided from the lower edge to the upper edge of the surrounding wall, and the bottom thereof is circularly cut out.

4 is a vibration spring that connects the substrate 1 and the transport container 2 at a predetermined angle; 5 is a storage container, the lower edge of which connects the substrate 1;
The two wires penetrate the bottom notch of the transport container 2 and extend to the height of the top surface of the bottom with a small gap without touching the transport container 3.

6 forms the bottom of the storage container 5, which can be raised and lowered by rotating a threaded shaft 7 at its center.

The threaded shaft 7 has an unthreaded lower portion supported by a bracket 9 attached to the storage container 5, and its lower end is connected to an output shaft of an electric motor 10 with a reduction gear.

Reference numeral 11 denotes a rotation stopper attached in the axial direction in contact with the inner wall of the storage container 5, and is engaged with a notch provided in the outer circumference of the bottom 6.

12 is an electromagnet attached to the substrate 1 via a bracket 13 and for transmitting vibrations via a block 14 attached to the lower surface of the transport container 2; 15 is the number of articles to be transported in the transport container 2; This is an IJ Mitsutwitch for detecting , and is attached to a fixed arm 16 .

With the above configuration, when the quantity of transported articles stored in the storage container 5 being supplied into the transport container 2 decreases to a predetermined quantity or less, it is detected by the limit switch 15, and the reduction gear is activated for a predetermined period of time. Driven by the electric motor 10, the bottom 6 is raised via the threaded shaft 7, the articles to be transported are pushed up, a predetermined amount is replenished into the transport container 2, and the spiral transport path 3
to the outside of the transport container.

In addition, when the bottom 6 in the storage container reaches the upper limit and there are no more items in the storage container and you want to replenish the container, switch the switch (not shown) to reverse the speed reducer motor 10 and move the bottom 6 to the limit switch 17. After lowering until detection, replenish the items.

Next, a modified example of application of the present invention is shown in FIGS. 3 and 4.

25 is an immovable board, 26 is a transport container, 27 is a vibration spring,
Reference numeral 28 denotes a storage container, the lower edge of which is rotatably supported by a rolling bearing 29, and has a driven gear 30 around the outer periphery of the lower edge.

The storage container 28 passes through the bottom of the transport container 26, and its upper edge extends to a predetermined height.

31 forms the bottom plate of the storage container 28, and is pivotally supported at its center by a fixed threaded shaft 32.

The threaded shaft 32 is supported by a bracket 33 at its lower end,
An arm 34 is attached to the upper end.

35 is a guide rod, 36 is an electric motor with a reduction gear, and a drive gear 37
Rotational force is transmitted to the driven gear via the driven gear.

With the above configuration, the articles stored in the storage container 28 rise together with the bottom plate 31 while rotating for a predetermined time together with the storage container 28 and the bottom plate 31, which are rotated by the electric motor 36 with a reduction gear via the driven gear 37, and the articles are It is dropped into the transport container 26 from the upper edge of the storage container 28.

The arm 34 serves to help the article fall.

The articles dropped into the transport container are sequentially transported by vibration.

Next, another modified example of application of the present invention is shown in FIGS. 5 and 6.

38 is a bottom plate, 39 is a guide shaft that guides the bottom plate in a vertically movable manner, 40 is a compression spring, and 41 is an adjustment bolt.

With the above configuration, the bottom plate is raised sequentially in inverse proportion to the weight of the articles in the storage container 42, and a constant amount of articles are always supplied into the transport container 43.

As is clear from the above description, the present invention has the following remarkable effects.

(1) By providing a fixed storage container at the bottom separate from the transport container for transporting the articles, the vibration conditions applied to the container are less likely to change depending on the number of articles in the transport container, and the transport speed is almost constant.

(2) Only the items inside the transport container are subject to vibration;
Items in storage containers are not subjected to unnecessary vibrations,
Low noise and less likely to damage items.

(3) Since the storage container is not located outside or on either side of the transport container, but is built into the transport container, when the vibratory feeder is incorporated into other equipment, it can be simplified with fewer obstacles.

Moreover, it does not become an obstacle when assembling, adjusting, and maintaining a device for sorting the posture of articles on a conveyance path.

(4) To supply goods from a storage container to a transport container,
Instead of using the gravity of the item to discharge it from the gap, the item is pushed up by force from below to the top of the bottom of the transport container, eliminating clogging of the item from the outlet.

In addition, the supply quantity is not adjusted by increasing or decreasing the area of the discharge port, but after detecting the quantity of goods in the transport container with a limit switch, the bottom plate of the storage container is pushed up for a set time or a predetermined amount to supply the goods. Therefore, the adjustment operation is easy,
Supply quantity becomes stable.

[Brief explanation of drawings]

FIG. 1 shows a vibrating feeder according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line A-A in FIG.
3 and 4 show modified application examples of the present invention, and FIG.
A cross-sectional view taken along line B-B in the figure, and FIG. 4 is a longitudinal cross-sectional view thereof. 5 and 6 show another modified example of application of the present invention, in which FIG. 5 is a cross-sectional view taken along line C-C in FIG. 6, FIG.
The figure is a sectional view of a conventional example. 1... Board, 2... Transport container, 3...
...Spiral conveyance path, 4...Vibration spring, 5
... Storage container, 6 ... Bottom plate.

Claims (1)

[Claims] 1. An immovable substrate, a transportation container that is coupled to the substrate via a vibration spring and has a surrounding wall with a spiral transportation path provided inside, and an upper opening edge of the transportation container is brought close to an opening provided at the bottom of the transportation container, A container comprising a cylindrical storage container for storing an article, and a bottom plate whose outer periphery is in sliding contact with or close to the inner wall surface of the storage container and is movable up and down within the storage container, and a container formed by the bottom plate and the storage container. A vibratory feeder characterized in that the article is stored and the stored article is replenished into the vibrating conveyance container by raising the bottom plate.