JPS641284Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a piezoelectric driven parts feeder using piezoelectric ceramics.

Conventional parts feeders have either an electromagnetic drive method or a piezoelectric drive method, but in either method, the long axis of a rectangular leaf spring is oriented vertically, which increases the height of the parts feeder. In particular, electromagnetic drive type parts feeders have a high height due to the installation of an electromagnetic drive source, making it difficult to use them in locations with limited height.

The present invention solves the above-mentioned problems by arranging a piezoelectrically driven leaf spring in which a piezoelectric ceramic is attached to the leaf spring so that its long axis is horizontal and its short axis is inclined with respect to the vertical line. To provide a piezoelectric drive parts feeder with a reduced height by connecting a parts container and a mounting base.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

Figures 1 to 3 show four piezoelectric drive plate springs 5a~
5d is sorbed radially with the long axis direction being horizontal and the short axis direction forming equal inclination angles in the same direction with respect to the vertical line. Attachment pieces 4a to 4d are respectively attached to four equal parts of the circumference. Its installation angle is approximately 35° with respect to the vertical line. 2 is a square-shaped mounting base with anti-vibration rubber legs 3 attached to the four corners of the bottom surface, and an angle between the top tip of the square column and the vertical line in the center of the top surface is approximately
35 degrees, and piezoelectric drive springs 5a to 5 described below on the four sides.
Attach a fixing post 8 cut out with a width equal to the width of d.
5a to 5d are piezoelectric driven leaf springs, which have a structure in which a rectangular piezoelectric ceramic 7 to which lead wires are connected is attached to the surface of a rectangular leaf spring 6 with mounting holes at both ends. It may be attached to. One end in the longitudinal direction thereof is screwed to each of the mounting pieces 4a to 4d, and the other end is screwed to the slope at the top end of the fixed column 8, respectively. Thus, each piezoelectric drive plate spring 5
a to 5d are arranged so as to be inclined at equal angles to the vertical line. In this case, a small distance is required between the upper end surface of the fixed column 8 and the component container 1, and the piezoelectric drive plate springs 5a to 5d are not positioned above the upper end surface of the fixed column 8. Also, piezoelectric drive plate springs 5a to 5
Attachment pieces 4a to 4 so that d can be screwed on without bending.
Place d.

In operation, when commercial power is applied to each of the piezoelectric ceramics 7, the piezoelectric drive plate springs 5a to 5d vibrate, giving vibration in the rotational direction to the component container 1 about the fixing column 8, and causing the parts housed in the component container 1 to vibrate. The parts that move around the circumference in a fixed direction due to vibration. here,
The piezoelectric drive leaf springs 5a to 5d are arranged so as to be inclined at equal angles to the vertical line, so that
The generated vibration is a combination of a first vibration component that vibrates the component container 1 in the vertical direction and a second vibration component that vibrates the component container 1 in the component transfer direction. Therefore, the parts in the parts container 1 are transferred in the direction of the second vibration component.

FIG. 4 shows three piezoelectric drive plate springs 15a, 15.
This is an embodiment in which parts b and 15c are mounted symmetrically with respect to the center, and the operation is the same as that shown in FIG.

Figure 5 shows a typical wiring example with an input power supply of AC 100V.
(200V), the piezoelectric drive parts feeder P is connected to the amplitude regulator D, and the amplitude regulator D adjusts the amplitude of the piezoelectric drive parts feeder. The amplitude regulator D changes the voltage.

As described above, the present invention is a parts feeder that applies piezoelectric ceramics, and the piezoelectric drive leaf spring is arranged with its long axis horizontal and its short axis inclined, so that the long axis is vertical. Since there is no longer a need to arrange the parts feeder in the same way as before, the height of the parts feeder is lower than before, making the whole thing more compact, which greatly reduces space restrictions, making it easier to design automatic machines, and reducing costs. This has a great practical effect because it can be provided.

[Brief explanation of the drawing]

Fig. 1 is a front view of essential parts of an embodiment of the present invention, Fig. 2 is a sectional view taken along the line X-X' in Fig. 1, Fig. 3 is a plan view of the piezoelectric drive plate spring, and Fig. 4 is a similar one of another embodiment. FIG. 5 is a sectional view of the main parts of the embodiment, and a connection diagram showing an example of wiring. 1: Parts container, 2: Mounting base, 4a to 4d: Mounting piece, 5a to 5d: Piezoelectric drive leaf spring, 6: Leaf spring,
7: Piezoelectric ceramic, 8: Fixed column.

Claims (1)

[Scope of utility model registration request] A plurality of piezoelectric drive plate springs are made by pasting piezoelectric ceramics on rectangular plate springs so as to cause the plate springs to vibrate in the thickness direction, and one end thereof is connected to a component container with the long axis direction of the plurality of piezoelectric drive plate springs being horizontal. The other end of each piezoelectric drive leaf spring is connected to a mounting base, and each of the piezoelectric drive leaf springs generates a first vibration component that vibrates the component container in the vertical direction and a second vibration component that vibrates the component container in the component transfer direction. A piezoelectric drive parts feeder characterized in that the short axis direction is arranged at an equiangular inclination with respect to a vertical line so as to generate electricity.