JPH0240015Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) This invention relates to a parts feeding device, and particularly to a parts feeding device for aligning parts in a certain direction and feeding them to the next process in automatic assembly of products.

(Technical background of the invention) Various parts supply devices of this type are known. One is an electromagnetic drive method, and the other is a piezoelectric drive method. In either method, a parts container containing parts to be supplied is oscillated, and the oscillation is used to regulate and sequentially supply the parts into a groove provided in the container.

Among these, the piezoelectric drive method involves installing a piezoelectric element in a plate spring or the like that supports a component container to cause it to swing. This method saves space compared to electromagnetic drive methods that use electromagnets.

However, because the leaf spring that fixes the piezoelectric element has one end fixed to a mounting base and the other end fixed to a component container, there is a lot of loss in the vibrating part of the leaf spring, resulting in poor efficiency. In particular, when the parts container is circular, the width of the leaf spring is wide, and the "kink" of the leaf spring further deteriorates efficiency, making it impossible to supply the necessary parts.
Also, supply efficiency was poor.

(Purpose of the invention) This invention was made in an attempt to eliminate the above-mentioned drawbacks of the conventional technology, and its purpose is to provide a component feeding device that can be applied to both electromagnetic drive method and piezoelectric drive method. do.

(Structure of the invention) In order to achieve such an object, this invention includes a mounting base, a parts container containing parts to be supplied, and a plurality of plate-shaped members having one end fixed to the mounting base. A fixing member having one end pivotably combined with the plate member and the other end fixed to the component, and a drive source for swinging the component container with respect to the mounting base. .

(Effects of the invention) With the above-described configuration, according to this invention, it is possible to provide a component supply device that has the following effects.

(1) High efficiency with little loss in the parts moved by the drive source.

(2) By making the attachment parts of the plate member and the fixing member have complementary shapes of concavities and convexities, twisting of the plate member can be reduced, and vibration loss in the circular component container described in the embodiment of this invention can be avoided. be able to.

(3) By adopting a complementary shape to the one in (2) above, space can be saved. Therefore, for example, in the case of a linear component supply device, it is possible to reduce the width.

(4) By using a piezoelectric drive method, it is possible to reduce the thickness of the entire device, saving space.

(Embodiments of the invention) Examples of the invention will be described below with reference to the accompanying drawings. In addition, in each drawing, the same code|symbol shall indicate the same object.

FIG. 1 is a partially cutaway side view a and a partially cutaway top view b of an embodiment of this invention. Figure b is Figure a.
The case where the opening is at line AA' is shown.

According to the figure, a circular mounting base 11 and a parts container 12 containing parts to be supplied are shown. The mounting base 11 includes a mounting block 11a and legs 11.
It has b. The mounting block 11a is attached to the plate member 1
This is for fixing 3. Instead of using such a block 11a, a recess is provided on the surface of the mounting base 11,
The plate member 13 may be fixed.

The component container 12 is a so-called circular saucer, and has, for example, a spiral groove cut inside. The parts are aligned within this groove by swinging and are sent out in a predetermined direction. Containers of this type are known.

A plate member 13 and a fixing member 15 are provided between the mounting base 11 and the component container 12, and a cylindrical cover 19 is provided on the side surface to protect these from dust.

As described above, the plate member 13 has one end fixed to the block 11a with the screw 16. A plurality of blocks 11a are arranged on a disk-shaped mounting base 11 at 90 degrees apart from each other, and a plate-shaped member 13
The plate-like member 13 is mounted so that the projection of the longitudinal direction is parallel to the tangential direction of the mounting base 11 (FIG. 1b).

A fixing member 15 is pivotally attached to the other end of the plate member 13. The other end of this fixing member 15 is fixed to the component container 12 by welding or the like.

Further, according to this embodiment, a piezoelectric element 14 as a driving source is provided on the plate member 13. According to the drawing, the upper element of the plate member 13 is 14
a, the lower element is 14b. These piezoelectric elements 14a and 14b are polarized in a direction such that they bend and vibrate when connected in parallel and a voltage is applied. Lead wires 17a and 17b for applying voltage are drawn out from the surfaces of the elements 14a and 14b.

FIG. 2 is for explaining the pivoting portion in FIG. 1 in more detail. The figure is a partially cutaway front view a and a vertical cross-sectional view b of the periphery of one plate-like member 13.

According to FIG.
has a convex shape. Furthermore, the convex tip portion 13c has steel balls 20a, 20b.
A recess is formed for positioning.

On the other hand, the fixing member 15 has a concave portion 15a complementary to the convex shape of the plate member 13 at one end. In addition, bolts 21a and 21b each having a needle-shaped tip are used to support the steel balls mentioned above.
is inserted. These bolts 21a and 21b are tightened with a constant torque after running-in.

According to such a system using steel balls, the optimum operating point can be easily obtained by adjustment, and high precision and high performance can be expected. It goes without saying that a lubricant such as grease may be used when assembling the steel balls.

Figure 3 shows the main parts of a so-called pivot structure in which the steel balls shown in Figure 2 are not used and bolts 31a and 31b with conical tips are used in place of the bolts 21a and 21b. There is.

FIG. 4 shows a partially cutaway front view a and a side view b of a structure in which the plate member 13 and the fixing member 15 are fixed by the same pivot structure as in FIG. 3. However, a shaft member having a conical tip is fixed to the end of the plate member 13 by spot welding or the like, and this is supported by bolts 41a and 41b having conical recesses at the tips.

In FIG. 5, a ball bearing 50 is fixed to one side of a plate member 13 by a mounting member 51, and is supported by bolts 52a and 52b having conical ends. Figure a shows a partially cutaway front view, and figure b shows a side view.

In the above embodiments and modifications, a piezoelectric drive system component supply device has been described, but it goes without saying that an electromagnetic drive system may also be used.

This invention is not limited to the above-described embodiments and modifications, but includes various other contents.
For example, the component container of the component supply device may be of a linear type.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of an embodiment of this invention, Fig. 2 is an explanatory diagram of main parts of the embodiment of Fig. 1, and Figs. 3 to 5 are explanatory diagrams of modified examples of the embodiment of Fig. 1. . 11... Mounting stand, 12... Parts container, 13...
Plate member, 14... piezoelectric element, 15... fixing member.

Claims (1)

[Claims for Utility Model Registration] (1) A mounting base, a parts container containing parts to be supplied, a plurality of plate-like members having one end fixed to the mounting base, and one end pivoting with the plate-like member. A parts supply device comprising a fixing member that can be freely assembled and whose other end is fixed to the parts container, and a drive source for swinging the parts container with respect to the mounting base. (2) Utility Model Registration The device according to claim 1, wherein the drive source is a piezoelectric element fixed to the plate member. (3) Utility model registration In the device according to claim 1 or 2, the plate-like member and the fixing member have complementary shapes with substantially the same width in the combined portion thereof. A parts supply device made up of several types of parts.