JPH01226615A - Carrying device of oscillating drive type - Google Patents

Abstract

PURPOSE:To make it possible to provide optimum oscillation feed for an article to be carried is well as to change the direction of feed with simple adjustment made by letting a stretcher project from an elastic plate, and thereby mounting the article to be carried in such a way as to be capable of being changed in the oscillation direction of the elastic plate while a gap is being kept with the exception of a connecting section. CONSTITUTION:When voltage is applied to piezo-electric elements 4 and 5, each elastic plate 3 oscillates with an amplitude angle alpha which is equal to the right and left. In this case, a line connecting a connecting point (a1) at which a stretcher 6 is to be fixed to an article 10 to be carried, with a connecting point (a2) forms the line of action W, let the article jump up at this moment to the direction indicated by an arrow head along the line of action N so that the article is forwarded to the arrow head 13. However, the article 10 is actually fixed onto the stretcher 6, when the load is therefore applied, the stretcher 6 is rocked horizontally so that the plate is subjected to moment which is greater when rocked to the left than when rocked to the opposite side. Even if the amplitude angle alpha is therefore equal from side to side, as for the relation between the right component H1 and the left component H2 of horizontal oscillation, H2 is greater than H1. In addition, the vertical component P of oscillation can be obtained so that the article is carried to the direction same as that of the arrow head 13.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention transmits minute vibrations generated by a piezoelectric element or an electromagnet to a conveyor through an elastic plate to move a small article placed on the conveyor in a straight line. Alternatively, the present invention relates to a vibration-driven transfer device that transfers in a rotational direction.

[Conventional technology]

This type of device is also known, for example, from Japanese Patent Application Laid-open No. 111815/1981, but its outline is that an elastic plate is interposed diagonally between a base and a carrier, and a piezoelectric element is attached to the elastic plate. Alternatively, micro-vibrations generated by an electromagnet are applied, and the micro-vibrations cause the elastic plate to vibrate diagonally up and down, and the amplitude of the vibrations applies an actuation force to flip the articles on the carrier in one direction, thereby conveying them.

[Problem that the invention attempts to solve]

By the way, the above-mentioned conveyance device adjusts the factors such as the inclination angle of the elastic plate, the wall thickness and length of the elastic plate, the natural frequency, the applied voltage, etc. according to the article to be conveyed, that is, the size of the article, the weight, and the conveyance speed. It is manufactured according to the following. However, the object to be transported has a unique coefficient of repulsion, and conventional methods adjust the applied voltage to adjust the flip-up angle to match that coefficient, but the amplitude of the vibration is affected by the load applied to the elastic plate. Since the elastic plate does not change uniformly, it is not possible to adjust it to a suitable state, and sometimes the elastic plate has to be replaced with another one.

In view of the above, the present invention was developed with the objective of providing a vibrating feeder that can provide a vibration feeder action that is most suitable for the articles to be conveyed through simple adjustment operations. Furthermore, the adjustment operation aims to provide a vibration-driven conveyance device configured to be able to cope with changes in the direction of conveyance of articles.

[Means to solve the problem]

A vibration-driven conveyance device according to the present invention is a conveyance device that uses vibrations applied to an elastic plate as a driving source to transport articles to one side.
A stretcher connected perpendicularly to the elastic plate is mounted on the carrier for transporting the articles so that its position can be displaced in the vibration direction of the elastic plate, and the stretcher is attached to a fixed portion between the carrier and the stretcher. The above-mentioned problem is solved by maintaining a gap between the conveying bodies except for.

Further, the means for changing the feeding direction is provided by vertically standing elastic plates connected to the stretcher body having the adjusting means.

[For production]

When attaching the stretcher to the carrier, the vibration direction angle becomes smaller as the position of the stretcher moves closer to the elastic plate side of the stretcher.

Furthermore, if the elastic plate is vertical, the feeding direction can be changed by protruding the stretcher attached to its upper end toward either the left or right, and the attachment of the stretcher can be done by changing the position. The vibration direction angle can be adjusted by

〔Example〕

To specifically explain the present invention by way of an example, the example shown in FIG. It is fixed by standing up and tightening screws, piezoelectric elements 4 and 5 are attached to both the front and back sides of the elastic plate 3, and a stretcher 6 is held at right angles to the elastic plate 3 at the upper end of the elastic plate 3 and protrudes horizontally. Similarly, the stretcher body 6 is fixed by tightening the screws.
A long hole 7 is formed in the hole 7 so as to become longer in the direction of protrusion from the elastic plate 3, and a bolt 8 inserted through the long hole 7 is used to attach the stretcher 6 to the carrier 10. The carrier body 6 is connected and fixed via a spacer 9, and the spacer 9 maintains a gap S so that the lower surface of the transport body 10 does not come into contact with any part of the stretcher body 6 other than the connected and fixed part.

The stretcher 6 is made of a rigid plate made of high steel, but as shown in FIG. It is also possible to connect the elastic plate 3 integrally with the elastic plate 3 or separately with screws.Furthermore, as shown in FIG.
may be provided in one piece, a screw hole 12 for a bolt for attaching the elastic plate 3 is provided in the hanging piece 11, and a long hole 7 is provided in the horizontal portion.

Further, the surface of the bracket 2 provided on the base 1 to which the elastic plate 3 is fixed is formed into a vertical plane since the elastic plate 3 is mounted upright, and this vertical plane is formed on one side of the bracket 2 or as shown in the figure. However, the elastic plate 3 does not necessarily need to be installed upright, and may be installed at an angle as shown in FIG.

Further, the examples shown in FIGS. 6 and 7 and FIGS. 8 and 9 are bowl-shaped conveyance devices, in which 4 The brackets 2 are cut out in a step-like manner, and both end surfaces of each bracket 2 are formed into vertical surfaces, and an elastic plate 3 is provided with piezoelectric elements 4 and 5 on the end surfaces of each bracket 2 in the same direction.・・・・・・
... is erected, and each stretcher body 6 ...... provided at the upper end of each bullet plate 3 ...... has a long hole 7 ......
. . , as shown in FIG. Note that the above-mentioned modification can be applied to this example as well.

Furthermore, although the piezoelectric elements 4 and 5 are attached to the elastic plate 3 on each side described above, it is not necessary to use piezoelectric elements, and an electromagnetic type can also be applied.

The operating principle of the present invention is shown in FIG. 10 of the apparatus having the above-mentioned structure, in which the elastic plate 3 having the piezoelectric elements 4.5 is vertically erected and a rigid carrier body 6 is provided thereon. The thin lines in the figure indicate the effect when the carrier 10 is not attached, that is, when there is no load, but if a voltage is applied to the piezoelectric elements 4 and 5,
The elastic plate 3 vibrates left and right with equal amplitude angles α. The line connecting the connecting point a1 and the connecting point a2 of the stretcher 6 to the carrier 10 at that time is the line of action W, and the article is flipped up in the direction of the arrow of the line of action W and sent toward the arrow 13. become. However, in reality, the carrier 10 is fixed to the stretcher 6, and when a load is applied, the stretcher 6 is swung while maintaining a horizontal state, as shown by the thick line in the figure. Since a larger bending moment acts on the left side than on the opposite side, even if the left and right amplitude angles α are the same, the relationship between the left and right horizontal vibration components H1 and H2 is H2>Hl, and the vertical vibration component P is obtained, and the arrow 1 mentioned above
The article is conveyed in the same direction as 3. In addition, elastic plate 3
A similar effect can be obtained even when the plate is provided at an angle.

FIG. 11 shows a case where the stretcher body 6 is made of low steel, and this is a diagram illustrating the mode based on an experiment, and the line of action W is at the 9th point.
This works in the opposite direction to the case shown in the figure.

Next, the difference in the vibration direction angle when the connection position of the carrier 6 with the carrier 10 is changed will be explained with reference to FIG. 12. The stretcher 6 is made of a rigid plate, and the dashed line in the figure shows the neutral line when there is no vibration, and shows the state in which it is swinging left and right. The connecting point a is provided at the farthest position from the fixed position of the elastic plate 3, and the thin line indicates the case where the connecting point a with the conveyor 10 is shifted toward the fixed position of the elastic plate 3. Also, the length Ll from the fixed position of the elastic plate 3 to the connection point a, and the length L2 to the connection point
The relationship between LL and L2 is LL>L2, and the amount of deflection of the elastic plate 3 at the connection point a is greater than that at the connection point I. Therefore, if vibration is applied to the elastic plate 3, the amount of deflection between the connection point a and the connection point In this case, the amplitudes A0 and A2 are almost the same, but the vibration direction angle θ formed by the line of action W8 connecting the two points on the left and right of the amplitude of the connecting point a,
, and the line of action W2 in the case of connection point S is
The relationship between the vibration direction angle θ2 formed by the vibration direction angle θ2 and the vibration direction angle θ1 of the connection point a is θ1>θ2. Therefore, the flip-up angle at connection point a is larger than that at connection point A.

In addition, when the stretcher 6 is made of low steel, it is sent in the opposite direction as described above. Also, when the elastic plate 3 is tilted, the same effect as described above can be obtained.

Next, if the device is constructed by vertically standing the elastic plate 3,
As shown in FIG. 4, the elastic plate 3 can be replaced and fixed on the opposite side of the bracket 2 of the base from that shown in FIG. The mounting direction may be changed, and the same effect as described above can be obtained in this case as well. In addition, in the examples shown in FIGS. 8 and 9, the attachment state of the elastic plate 3 and the stretcher 6 is reversed from that shown in FIGS. 6 and 7, and the article is sent in the opposite direction. be.

〔Effect of the invention〕

According to the vibration-driven conveyance device according to the present invention, a stretcher is provided protruding from an elastic plate subjected to vibration amplitude, and a conveyor body is attached to the stretcher, and the position of the attachment can be displaced in the direction of vibration of the elastic plate. In addition, only the joint between the stretcher and the transport body is in contact with the other parts while maintaining a gap. By adjusting the movement of the joint between the stretcher and the transport body, the flip-up angle can be adjusted. For example, it is a plastic product or a metal product, and it can be adjusted to the most suitable state depending on the size of the shape, and this adjustment can be done by displacing the connecting part between the stretcher and the carrier. Since it is possible to make fine adjustments, the operation is extremely easy and simple.

In addition, if the elastic plate connected to the stretcher having the above function is installed vertically, all you need to do is reverse the direction in which the stretcher attached to one end of the elastic plate projects. The feeding direction can be changed, and the same effects as described above can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a linear vibration-driven conveyor according to the present invention, FIGS. 2 and 3 are sectional views showing similar examples of a stretcher, and FIG. 4 shows an elastic plate in the example of FIG. 1. FIG. 5 is a front view showing an example in which the elastic plate is provided at an angle; FIG. 6 is a partially cutaway front view showing a bowl-shaped vibration-driven conveyance device; 7 is a plan view, FIG. 8 is a front view showing an example in which the elastic plate is installed in the opposite direction, FIG. 9 is a plan view, and FIGS. 10 and 11 are front views showing the operating principle in line diagrams. , FIG. 12 is a front view that compares and shows the operation when the connection position of the stretcher body is displaced. 1... Base 2... Bracket 3... Elastic plate 4
．． 5... Piezoelectric element 6... Stretcher 7... Long hole 8
...Bolt 9...Spacer 10...Transporter Fig. 7 Fig. 6 Fig. 9 Fig. 8

Claims (1)

[Claims] 1. In a conveyance device that conveys articles to one side using vibration applied to an elastic plate (3) as a driving source, a conveyor (10) that conveys articles;
, a stretcher (6) connected perpendicularly to the elastic plate (3)
) is provided so that its attachment position can be displaced in the vibration direction of the elastic plate (3), and the stretcher (6) is mounted on the carrier (10).
A vibration-driven transport device 2 characterized in that a gap (S) is maintained between the transport body (10) except for a fixed part between the carrier body (6) and the stretcher body (6), and an elastic plate connected to the stretcher body (6). The vibration-driven conveyance device according to claim 1, wherein (3) stands vertically.