KR101014900B1 - Rotary vibrator and vibratory conveying device using the same - Google Patents

Abstract

In order to meet the demand of high speed conveyance in recent years, it is to implement | achieve a highly efficient and durable rotary vibrator.
The rotary vibrator 10 of the present invention includes a base (base or base) 11, a vibration plate 12 disposed above the base, and an inner circumferential portion directly or indirectly connected to the base ( A piezoelectric drive body 14 extending from the inner circumferential portion 14a in the radially outward direction, and an elastic member 15 connected between the outer circumferential portion 14b of the piezoelectric drive body and the vibration plate. In the rotating vibrator provided, the elastic member is radially in a range from the inner circumferential side connecting portion 15a connected to the outer circumferential side of the piezoelectric drive body to the outer circumferential side connecting portion 15b connected to the vibration plate side. It is a plate-like material which extends and has the shape 15c curved in parallel with a tangent.

Description

ROTARY VIBRATOR AND VIBRATORY CONVEYING APPARATUS USING THE SAME}

The present invention relates to a rotary vibrator and a vibrating conveyer using the same, and more particularly, to a drive mechanism of a rotary vibrator.

BACKGROUND In general, a vibratory conveying apparatus such as a bowl-type parts feeder having a spiral track uses a rotary vibrator for vibrating the bowl conveying body in a direction parallel to the tangential line. This rotary vibrator has a vibration plate elastically supported by a leaf spring or the like on a base, and the vibration plate is in the tangential direction around the axis by an electromagnetic drive or a piezoelectric drive. In general, the vibration is in a direction parallel to the tangential direction. In recent years, a structure in which a piezoelectric drive body supported on a base is connected to the vibration plate via an elastic member of a leaf spring copper and vibrates the vibration plate in a direction parallel to the tangential line by flexural vibration of the piezoelectric drive body has been developed. Often found

As a rotary vibrator using said piezoelectric drive body, there exist some which are described in the following patent documents 1-3, for example. These rotary vibrators have a structure in which a piezoelectric drive body fixed to the center side on a base extends radially to the outer circumferential side, the outer circumferential portion of the piezoelectric drive body is connected to the elastic member, and the elastic member is connected and fixed to the outer circumferential portion of the vibration plate. have. As described above, in a horizontal-type rotary vibrator in which the piezoelectric drive body extends on the radially outer circumferential side, the vibration plate can be efficiently vibrated in the direction parallel to the tangential line, and at the same time, the rotary vibrator is compactly configured. The advantage is that you can.

[Patent Document 1] Japanese Patent Application Laid-Open No. 62-201710

[Patent Document 2] Japanese Patent Application Laid-Open No. 2007-161454

[Patent Document 3] Japanese Patent Application Laid-Open No. 2008-265967

In recent years, however, there has been a trend to further improve the conveyance speed of parts. Therefore, since the driving frequency of the piezoelectric drive body increases and the amplitude also increases, the driving load on the piezoelectric drive body is large, and the durability of the piezoelectric drive body becomes a problem. Moreover, in the horizontal-type rotary vibrator described above, the oscillating conveying apparatus, for example, operates in a state in which a bowl-type conveying body is fixed on the oscillating plate. However, since a large amplitude is required at a high frequency as described above, If the rotary vibrator is continuously operated, a gap may occur between the vibration plate and the carrier, or noise generated between the vibration plate and the carrier may be increased.

Therefore, an object of the present invention is to solve the above problems, and an object of the present invention is to realize a highly efficient and highly durable rotary vibrator capable of responding to the recent demand for high speed conveyance.

In light of these circumstances, as a result of earnestly examining by the present inventors, the following points became clear. That is, in the rotary vibrator of the type in which the piezoelectric drive body and the elastic member extend radially from the center side of the base toward the outer circumferential side, the vibration plate (actually, due to the flexural deformation of the piezoelectric drive body) In order to vibrate the vibration in the direction parallel to the tangential line, the connection point between the piezoelectric drive body and the oscillating plate of the excitation mechanism made of the elastic member is not intended to vibrate around the center of the base, but rather the radius of the center of the base. Attempts to oscillate around a position displaced outwardly (for example, a radial center position of the piezoelectric drive body). Therefore, the driving force is lost due to the difference between the vibration state of the excitation mechanism and the vibration state of the vibration plate. Whenever the reciprocating vibration in parallel with the tangent occurs, the piezoelectric drive body receives a radial tensile stress from the vibration disk, and the vibration disk receives a compressive stress radially inward from the excitation mechanism. As a result, the durability of the piezoelectric drive body is degraded and damage occurs, or when the rigidity of the vibration plate is low, distortion occurs in the vibration plate. As time passes, a gap occurs between the vibration plate and the fixed surface between the carrier plate and the vibration plate and the conveyance. Noise is generated between the sieve.

Therefore, the means devised by the present invention to solve the above problems includes a base, a vibration plate disposed above the base, and an inner circumference connected directly or indirectly to the base. And a piezoelectric drive body extending radially outward from the inner circumferential part, and an elastic member connected between the outer circumferential part of the piezoelectric drive body and the vibration plate, wherein the vibration is caused by the piezoelectric drive body and the elastic member. In the rotary vibrator which rotates a half in the direction which rotates around an axial line, the said elastic member has a radius in the range from the inner peripheral side connection part connected to the outer peripheral part side of the said piezoelectric drive body to the outer peripheral side connection part connected to the said vibration board side. Extending in the direction and having a shape bent in a direction parallel to the tangent, the outer peripheral side connecting portion of the elastic member being the pressure It is characterized by a rotary vibrator extending radially on the extension line of the bulb body.
According to the present invention, the elastic member is a plate member having a shape extending in the radial direction and bent in a direction parallel to the tangent, so that the elastic member is easily in the radial direction in a form in which the bending shape in the direction parallel to the tangent changes. I can stretch it. Therefore, due to the center point of the vibration form in the direction parallel to the tangent of the excitation mechanism, the center point of the vibration pattern does not coincide with the center of the base and the oscillation plate, so that the radial stress applied to the piezoelectric drive body and the oscillation plate at the time of operation is reduced. It becomes possible to reduce. For this reason, since the drive load which a piezoelectric drive body receives can be reduced, durability of a piezoelectric drive body can be improved and deformation of a vibration board can be suppressed.

In one aspect of the present invention, in the elastic member, both the inner circumferential side connection part and the outer circumferential side connection part extend in a radial direction, and then extend in the radial direction between the inner circumferential side connection part and the outer circumferential side connection part. After bending in one of the clockwise and counterclockwise directions parallel to the tangential line, the intermediate bend is bent to the side of the direction opposite to the above one direction, and then extends in the radial direction again. According to this, the inner circumferential side connection portion and the outer circumferential side connection portion extend in the radial direction, so that the driving force generated in the piezoelectric drive body can be accurately applied in the direction parallel to the tangent line orthogonal to the radial direction with respect to the vibration plate, and thus the vibration plate can be applied more efficiently. It can vibrate. In addition, since the intermediate bend is formed in a simple shape that bends in one of the clockwise and counterclockwise directions parallel to the tangential line, and then bends the other side, the elasticity in the radial direction is not reduced much. Can be obtained.

In another form of this invention, the outer peripheral part of the said piezoelectric drive body and the inner peripheral side connection part of the said elastic member are fixed in the state which overlapped in the connection direction, and the said outer peripheral side connection part of the said elastic member bent in the direction parallel to the said tangent line. By the shape, it is arrange | positioned at the said piezoelectric drive body side in the direction parallel to a tangent than the said inner peripheral side connection part. According to this, the tangential position displacement in connection with the outer peripheral part of a piezoelectric drive body and the inner peripheral side connection part of an elastic member superimposed in the tangential direction is correct | amended in the direction which falls by the curved shape of an elastic member. Therefore, since the extension direction of the drive mechanism which consists of a piezoelectric drive body and an elastic member as a whole can be set in the form with little displacement from a radial direction, it becomes possible to transmit a driving force to a vibration board efficiently.

In this case, it is preferable that the outer peripheral side connecting portion of the elastic member extends in the radial direction on the extension line of the piezoelectric vibrating body. According to this, the driving force which a piezoelectric drive body generate | occur | produces can be reliably and efficiently transmitted to a vibration board in the tangential direction orthogonal to a radial direction.

In another form of this invention, the said elastic member is equipped with the outer side comprised in the concave-curve shape respectively in the upper and lower sides. According to this, the outer edges of both the upper and lower sides of the elastic member are formed in a concave curve, thereby increasing the flexibility of the elastic member in the torsional direction and at the same time, the elastic member is distributed by the stiffness distribution in which the center portion is lowered. The stresses applied to the outer edges of the upper and lower sides of the can be distributed radially along the curve. Therefore, when the elastic member vibrates in the direction parallel to the tangent due to the bending deformation of the piezoelectric drive body, the center of the vibration plate is upward, so that the elastic member is deformed in the torsion direction as a whole even when a torsional stress is applied to the elastic member. As a result, the stress can be dispersed and accepted over the entire radial length of the elastic member. For this reason, for example, damage may occur due to local stress concentration at the boundary portion of the inner peripheral side connection portion of the elastic member fixed to the outer peripheral portion of the piezoelectric drive member or at the boundary portion of the outer peripheral side connection portion of the elastic member fixed to the vibration plate. Can be prevented.

In another aspect of the present invention, the inner circumferential portion of the piezoelectric drive body is fixed to the inner circumferential side end portion of the attachment fixing member having a fixing surface region which is fixed in contact with the base and extends in the radial direction. According to this, the attachment fixing member can be attached to the base with high fixing strength by contact fixing the region of the fixing surface extending in the radial direction on the base, and the inner circumferential portion of the piezoelectric drive body is attached to the inner peripheral side end of the attachment fixing member. By fixing, it becomes possible to approach the inner peripheral part of a piezoelectric drive body to the center of a vibration board.

Next, the vibrating conveying apparatus of the present invention includes a rotating vibrator according to any one of the above, and a conveying body provided with a spiral conveying path which is fixed on the vibrating plate and extends in parallel with the tangent line.

According to the present invention, it is possible to have an excellent effect that a highly efficient rotary vibrator can be realized with high efficiency that can cope with the recent demand for high speed conveyance.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic sectional drawing which shows the external appearance of embodiment of the rotary vibrator which concerns on this invention.
2 is a schematic plan view showing a state in which the vibration plate of the embodiment is removed.
3 is a longitudinal sectional view of the embodiment;
4 is a side view of the embodiment;
5 is a plan view of the excitation mechanism of the embodiment.
6 is a plan view (a) and a side view (b) of the elastic member of the embodiment.
FIG. 7 is a side view illustrating a vibrating conveying device including the rotary vibrator of the embodiment. FIG.
FIG. 8 is a plan view of the vibrating conveyer shown in FIG. 5. FIG.

EMBODIMENT OF THE INVENTION Next, embodiment of this invention is described in detail with reference to an accompanying drawing.

[Rotary vibrator]

BRIEF DESCRIPTION OF THE DRAWINGS The schematic perspective view which shows the external appearance of embodiment of the rotary vibrator which concerns on this invention, FIG. 2 is a schematic top view which shows the state which removed the vibration board of the said rotary vibrator, FIG. (BB line sectional drawing of FIG. 2), FIG. 4 is a side view of the said rotary vibrator.

The rotary vibrator 10 of the present embodiment includes a base 11, a disk-shaped vibration disk 12 supported above the base 11, a base 11, and a vibration disk 12. ) And in the direction of rotation around the axis 10x of the rotary vibrator 10 (also referred to as the axis of the vibration disk 12) while supporting the vibration disk 12 and parallel to the tangent line. An oscillating excitation mechanism 13 is provided. In the example of illustration, the excitation mechanism 13 is provided in multiple numbers (three in the example of illustration) around the said axis line 10x. The plurality of excitation mechanisms 13 are provided at equal angular intervals around the axis 10x. In addition, the base 11 is supported on the mounting table 10a via a dustproof member 10b such as rubber or spring.

The excitation mechanism 13 has a shape extending radially about the axis 10x as a whole. The excitation mechanism 13 is a plate-shaped piezoelectric drive body 14 extending from the radially inner circumferential side to the outer circumferential side, and a plate-like elastic member (plate spring, 15) connected and fixed to the piezoelectric drive body 14. Equipped with. The inner peripheral portion 14a of the piezoelectric drive body 14 is fixed to the upper surface 11a of the base 11 via the attachment fixing member 16.

The attachment fixing member 16 has a fixing region 16s extending from the radially inner circumferential side to the outer circumferential side, and the bolt 17 in a state where the bottom surface of the fixing region 16s is in contact with the upper surface 11a of the base 11. The base 11 is fixed to the base 11 by appropriate fixing means such as The inner circumferential end 16a of the attachment fixing member 16 protrudes laterally from the inner circumference of the fixing region 16s, whereby the attachment fixing member 16 has an L-shaped planar shape as a whole. The inner circumferential end 16a is fixed to the inner circumferential portion 14a of the piezoelectric drive body 14. The piezoelectric drive body 14 and the attachment fixing member 16 are fixed by a spacer (washer) or a bolt as shown. Here, the contact fixing surface between the inner circumferential end 16a and the inner circumferential portion 14a consists of a surface facing in a direction parallel to the tangent perpendicular to the radial direction.

The piezoelectric drive body 14 is a piezoelectric drive element bonded to the surface of an elastic metal plate such as a shim plate, and a bimorph type or one side in which piezoelectric drive elements are provided on both front and back sides of the elastic metal plate. The unimorph type which provided the piezoelectric drive element only in the surface is used. The piezoelectric drive body 14 is comprised in plate shape as a whole, and the width direction becomes a direction along the up-down direction, ie, the direction which connects the base 11 and the vibration board 12, and extends radially. It is installed in the form. However, since the parts are conveyed along the helical track by a bowl-type carrier which will be described later, the diaphragm 12 needs to be vibrated obliquely upward around the axis 10x. The width direction of the sieve 14 is not a perfect vertical direction, but obliquely inclines upward.

The outer circumferential portion 14b of the piezoelectric drive body 14 is fixed to the inner circumferential side connecting portion 15a of the elastic member 15. The outer circumferential portion 14 and the inner circumferential side connecting portion 15a are fixed by spacers (bolts), bolts, nuts, and the like in a state where they overlap in a direction parallel to the tangent line. The outer circumferential side connecting portion 15b of the elastic member 15 is fixed to the projection-shaped to-be-connected portion 12a provided to protrude downward from the outer circumferential portion of the vibration plate 12 by spacers (left seats), bolts, and the like. This to-be-connected part 12a is arrange | positioned without contacting the inside of the recessed opening part 11b provided in the outer peripheral wall part of the base 11.

The elastic member 15 is comprised from an integral elastic metal material and is formed in plate shape as a whole. In the elastic member 15, both the inner circumferential side connecting portion 15a connected to the outer circumferential portion 14b of the piezoelectric drive body 14 and the outer circumferential side connecting portion 15b fixed to the vibration plate 12 are radially directed. It consists of a stretched form. And in this embodiment, the intermediate | middle bending part 15c is provided between the inner peripheral side connection part 15a and the outer peripheral side connection part 15b. The intermediate bent portion 15c is a portion having a shape bent in a direction parallel to the tangent in a form deviating from the radial direction. In this embodiment, the elastic member 15 having the intermediate bent portion 15c is used to facilitate the expansion and contraction of the excitation mechanism 13 in the radial direction.

In the illustrated example, the intermediate bent portion 15c extends in the radial direction as it is in the inner circumferential side connection portion 15a, and then in either the clockwise or counterclockwise direction (the clockwise rotation in FIG. 2) which becomes parallel with the tangent. It has a shape of an S-shape which is bent, then bent in the other direction (counterclockwise in FIG. 2), and then again extends in the radial direction. In this way, since both the inner circumferential side connecting portion 15a and the outer circumferential side connecting portion 15b extend in the radial direction, transmission of the driving force between the piezoelectric drive body 14 and the vibration plate 12 is performed in the direction parallel to the tangent line. The driving force of the piezoelectric drive body 14 can be transmitted to the vibration board 12 efficiently.

Here, the elastic member 15 is not limited to the above-described bend shape, and for example, L-shape, U-shape, V-shape, crank-shape, and the like, such that the bending shape changes, the elastic expansion and contraction becomes possible. As long as it is a form, you may have what kind of bending shape. In this case, both the inner circumferential side connecting portion 15a and the outer circumferential side connecting portion 15b do not have to extend in the radial direction.

The excitation mechanism 13 composed of the piezoelectric drive body 14 and the elastic member 15 is inclined in a direction parallel to the tangent on the plane, but has an inclination angle θ (see FIG. 4) with respect to the horizontal direction. It is attached in the form. That is, the plate surface of the piezoelectric drive body 14 and the elastic member 15 has the form diagonally upward in the direction parallel to a tangent line. The inclination angle θ is oriented obliquely upward with respect to the direction parallel to the horizontal tangent line of the vibration plate 12, and the component on the carrier to be described later along the tangent line along the vibration direction S along the vibration direction S It is conveyed in the direction obliquely upward of a direction. The inclination angle θ is usually in the range of 5 to 20 degrees, but is appropriately set according to the required transport characteristics.

5 is a plan view of the excitation mechanism 13 and the attachment fixing member 16. Although the excitation mechanism 13 which consists of the piezoelectric drive body 14 and the elastic member 15 on the base 11 and the attachment fixing member 16 are parallel (preferably parallel), they may not be strictly parallel. ) All extend along the radial direction R. The space | interval is provided between the excitation mechanism 13 and the attachment fixing member 16 by the amount of protrusion of the inner peripheral end 16a of the attachment fixing member 16. As shown in FIG.

The outer circumferential portion 14b of the piezoelectric drive body 14 and the inner circumferential side connecting portion 15a of the elastic member 15 are fixed in a state where they overlap in a direction T parallel to the tangent line. For this reason, the inner peripheral side connection part 15a of the elastic member 15 is displaced in the counterclockwise rotation direction shown in the direction T parallel to the tangent from the extension line 14y extending along the radial direction R from the piezoelectric drive body 14. Is placed in position. In the illustrated example, the extension line 14y is a straight line extending along the radial direction through the axis 10x. On the other hand, the outer circumferential side connecting portion 15b of the elastic member 15 is a position displaced in the illustrated clockwise direction in the direction T parallel to the tangent line than the inner circumferential side connecting portion 15a by the intermediate bent portion 15c. And the position displaced to the side of the piezoelectric drive body 14. As a result, in the illustrated example, the outer peripheral side connecting portion 15b extends in the radial direction R on the extension line 14y of the piezoelectric drive body 14.

Thus, the positional displacement of the direction T parallel to the tangent by fixing the outer peripheral part 14b of the piezoelectric drive body 14 and the inner peripheral side connection part 15a of the elastic member 15 in the superimposed state in parallel with the tangent. Since is corrected by the bending of the intermediate bent portion 15c of the elastic member 15, the outer peripheral side connecting portion 15b can be avoided from deviating significantly from the extension line 14y of the piezoelectric drive body 14, and in the illustrated example The outer peripheral side connecting portion 15b is disposed on the extension line 14y. Therefore, since the excitation mechanism 13 extends correctly in the radial direction R as a whole, it becomes possible to drive the vibration board 12 efficiently in the direction T parallel to the tangent line.

6A is a plan view of the elastic member 15, and FIG. 6B is a side view of the elastic member 15. As shown in FIG. Here, the inner circumferential side connecting portion 15a has a flat plate shape, and a through hole 15t for bolt insertion is formed. Moreover, the said outer peripheral side connection part 15b is also comprised in flat form, and the through-hole 15u for bolt insertion is formed. Both the inner circumferential side connecting portion 15a and the outer circumferential side connecting portion 15b are configured in a band shape extending in the width direction (up and down direction in the figure). In the illustrated example, the inner circumferential side connecting portion 15a corresponds to the outer circumferential side connecting portion (15a) corresponding to the width of the outer circumferential portion 14b of the piezoelectric drive body 14 and the upper and lower widths of the to-be-connected portion 12a of the vibration plate 12. It has a wider width than 15b).

The middle bent portion 15c has a shape bent in a direction parallel to the tangent as described above, but when viewed from the width direction, the outer edges 15d and 15e of both width directions (up and down sides in the illustration) are concave and curved (concave circle), respectively. Arc-shaped), the inner peripheral side connecting portion 15a and the outer peripheral side connecting portion 15b are configured to have a narrow width. The radial stiffness (shear modulus of elasticity) of the elastic member 15 is the smallest in the radial center portion due to the concave curved outer edges 15d and 15e, and the inner circumferential side connecting portion 15b and the outer circumferential connecting portion are smallest in the radial center portion. It is configured to gradually increase as it faces 15b.

The radial distribution of the stiffness ratio as described above is based on the boundary line between the inner circumferential side connecting portion 15a and the intermediate bent portion 15c in which the elastic member 15 receives the stress in the torsional direction received from the piezoelectric drive body 14 and the vibration plate 12. (15a) (for example, a portion used to contact the spacer or the edge of the seat used in the connection fixing portion with the piezoelectric drive member 14) or the boundary line 15bc of the outer peripheral side connecting portion 15b and the intermediate bent portion 15c (for example, For example, it is effective in that it can avoid intensive reception by the spacer used in the connection fixing part with the vibration board 12, or the part which contacts the edge of a seating element. Here, the stress in the torsional direction is the center of the base 11 on which the excitation mechanism 13 extending in the radial direction is fixed below, and the center of the vibration disk 12 driven by the excitation mechanism 13. This inevitably occurs due to the configuration disposed above.

That is, for example, in the case where the width of the elastic member 15 is constant in the radial direction, when the stress in the torsional direction is applied, stress concentrates on the boundary line 15ac or 15bc and cracks or wears on the widthwise ends of these boundary lines. The back may be damaged. However, in this embodiment, since the width | variety narrows and goes down from the boundary line 15ac or 15bc in the intermediate | middle bending part 15c toward the radial intermediate position, it is comprised so that a rigidity may fall, so that it may be stressed in the said torsional stress The amount of deformation due to increase with separation from the boundary line 15ac or 15bc. Therefore, this stress in the torsional direction can be taken as a deformation over the entire radial direction of the elastic member 15, so that inconvenience such as occurrence of damage due to stress concentration becomes less likely to occur. Moreover, since the outer edge 15d, 15e of the elastic member 15 is formed in concave curvature, the dispersibility along the outer edge of the said stress in the torsional direction is further improved.

In addition, although the rigidity in the direction parallel to the tangent of the intermediate portion 15c is reduced by the concave curved outer edges 15d and 15e, the decrease in the rigidity is the tangent of the intermediate curved portion 15c. It is suppressed by the curved shape in the direction parallel to. Therefore, in this embodiment, there also exists an advantage that the effect by the concave curved outer edge shape demonstrated above can be acquired, suppressing the fall of rigidity in the direction parallel to the tangent of the elastic member 15. FIG.

In this embodiment, since the elastic member 15 is bent in the direction parallel to the tangent as described above, it is easy to stretch in the radial direction, so that the vibration form of the excitation mechanism 13 is reciprocating around the axis 10x. It becomes possible to absorb the radial stress which arises between the excitation mechanism 13 and the vibration board 12 by non-rotational motion.

That is, if the vibration form of the outer peripheral portion of the excitation mechanism 13 is a reciprocating rotational movement centering on the axis 10x, the above stress will not occur, but as a practical problem, the inner peripheral end of the excitation mechanism 13 is moved along the axis 10x. It is physically very difficult to arrange on, and even if this inner circumferential end can be arranged on the axis 10x, in practice, the vibration form is obtained by the piezoelectric drive body 14 generating bending vibration, so in many cases The center point of this vibration form comes to the radially intermediate position of the piezoelectric drive body. Therefore, since the radius of the vibration form of the outer peripheral side connection part 15b of the elastic member 15 becomes smaller than the distance of the to-be-connected part 12a of the vibration board 12 and the axis line 10x, the elastic member 15 The radial stress generated between the mechanism 13 and the oscillation plate 12 with the amplitude of the direction parallel to the tangent of the becomes large.

The stress increases the stress load in the radial direction given to the piezoelectric drive body 14, which causes damage to the piezoelectric drive body 14, and at the same time, decreases durability. Moreover, stress deformation is brought into the vibration board 12, for example, the support surface 12s of the vibration board 12 which supports and fixes the carrier mentioned later is deformed. This deformation of the support surface 12s causes distortion between the carrier and the gap between the carrier and the vibration disk 12, thereby lowering the vibration efficiency and increasing noise from both contact portions. .

In this embodiment, since the above-mentioned radial stress can be reduced by giving a bending shape to the elastic member 15, the radial stress load and the vibration plate 12 applied to the piezoelectric drive body 14 It is possible to reduce the deformation. Therefore, to prevent damage to the piezoelectric drive body 14, to improve durability, to reduce the vibration plate 12, to prevent noise, to reduce the distortion of the carrier body, to improve the transmission efficiency of vibration from the vibration plate to the carrier body, and the like. It becomes possible.

Next, with reference to FIG. 7 and FIG. 8, the Example of the vibration conveyance apparatus which concerns on this invention is described. 7 is a schematic side view showing an embodiment of a vibrating conveying apparatus according to the present invention, and FIG. 8 is a schematic plan view of the same apparatus. The vibration conveying apparatus 4 is what is called a bowl-type parts feeder, and is arrange | positioned on the support stand 3 supported by the dustproof member 2, such as a coil spring, in multiple places on the mounting base 1. On the support stand 3, the rotary vibrator 10 described above is provided, and a bowl-shaped carrier 42 is fixed on the vibration plate 12 of the rotary vibrator 10. In the conical shape of the conveyance body 42, the bottom part 42a which accommodates a component, and the conveyance path (track 42b) which spirally upwards from this bottom part 42a spirally upward are formed. This conveying path 42b finally reaches the upper part of the outer periphery of the conveying body 42, and is attached to the conveying path 52a of the other vibrating conveying apparatus 5 separately arrange | positioned on the support stand 3 at the front-end | tip part 42c. It is configured to run.

Said other vibrating conveying apparatus 5 is what is called a linear part feeder, and is provided with the excitation mechanism 51 provided on the support stand 3, and is supported on this excitation mechanism 51, and provided with the linear conveyance path 52a. The carrier 52 is provided. Moreover, the side of this vibrating conveying apparatus 5 is provided with the other vibrating conveying apparatus 6 which has the conveying body 62 provided with the linear collection | recovery path 62a on the above excitation mechanism. The vibrating conveying apparatus 6 is a part without a normal form or a defective part excluded from the component exclusion unit provided in the middle of the conveying path 52a among the parts conveyed to the right side of the drawing along the conveying path 52a. Is received and conveyed to the left side of the drawing in the direction opposite to the conveying path 52a in the recovery path 62a, and the parts import part 42d inside the conveying body 42 of the vibrating conveying device 4 described above. Return to

In the vibrating conveying apparatus 4, the conveyance body 42 is fixed to the vibrating plate 12 of the rotary vibrator 10 by the bolt 43 etc. And when the vibration board 12 vibrates in parallel with a tangent as mentioned above, the conveyance body 42 vibrates integrally with the vibration board 12 in parallel with a tangent. At this time, in the present embodiment, since the stress in the radial direction applied to the vibration plate 12 is lowered, the same applies to the carrier body 42, and the occurrence of distortion in the carrier body 42 is prevented. In addition, when the support surface 12s of the vibration board 12 is deformed due to the stress, a gap is generated between the vibration board 12 and the carrier body 42, which may cause unnecessary vibration or increase noise. However, in this embodiment, since deformation of the support surface 12s can be suppressed, unnecessary vibration and noise can be reduced.

In addition, the rotary vibrator and vibrating conveying apparatus of this invention are not limited only to the example of illustration mentioned above, Of course, various changes can be added within the range which does not deviate from the summary of this invention. For example, although the base 11 and the piezoelectric drive body 14 are indirectly connected and fixed through the attachment fixing member 16 in the said embodiment, the base 11 and the piezoelectric drive body 14 are directly connected. You may fix the connection. In addition, although the piezoelectric drive body 14 and the elastic member 15 are directly connected and fixed in the said embodiment, you may fix and connect through some member between them. In addition, although the elastic member 15 and the vibration board 12 are directly connected and fixed in the said embodiment, they may be connected and fixed through some member between them.

10... Rotary vibrator 10x... Axis
11 ... Base 11a... Top
12... Vibration plate 12a... Connection
12s... . Support surface 13.. Utensil
14... Piezoelectric drive body 14a... Housewife
14b... Outer periphery 14y... extension
15... Elastic member 15a... Inner peripheral connection
15b... Outer peripheral connection portion 15c... Middle bend
15d, 15e... Outer side 16.. Attachment fixing member
16a... Inner peripheral end 16s... Fixed area
4… Vibrating conveying device 42... Carrier
42a... Return path

Claims (7)

Base,
A vibration plate disposed above the base,
A piezoelectric drive body having an inner circumference directly or indirectly connected to the base, and extending radially outward from the inner circumference;
And an elastic member connected between an outer circumferential portion of the piezoelectric drive member and the vibration plate,
In the rotary vibrator for rotating the vibrating plate in the direction of rotation around the axis by the piezoelectric drive member and the elastic member,
The elastic member extends in the radial direction in a range from an inner circumferential side connecting portion connected to the outer circumferential side of the piezoelectric drive body to an outer circumferential side connecting portion connected to the vibration plate side, and has a shape that is bent in a direction parallel to the tangent line. It is a plate material, The outer periphery side connection part of the said elastic member is a rotating vibrator characterized by extending radially in the extension line of the said piezoelectric drive body.
The method of claim 1,
In the said elastic member, the said inner peripheral side connection part and the said outer peripheral side connection part both extend radially, and between the said inner peripheral side connection part and the said outer peripheral side connection part, it extends radially, and becomes a direction parallel to a tangential line And an intermediate bend portion which bends in the other direction opposite to the one direction after bending in one of the direction and the counterclockwise direction, and then extends in the radial direction again.
3. The method according to claim 1 or 2,
The outer circumferential portion of the piezoelectric drive body and the inner circumferential side connection portion of the elastic member are fixed in a state overlapping in parallel with a tangent line, and the outer circumferential side connection portion of the elastic member is bent in a direction parallel to the tangential line. A rotary vibrator, characterized in that it is arranged toward the side of the piezoelectric drive body in a direction parallel to the tangent than the inner circumferential side connecting portion.
delete 3. The method according to claim 1 or 2,
The elastic member, the upper and lower sides of the rotary vibrator, characterized in that each having an outer rim formed in a concave curve.
3. The method according to claim 1 or 2,
An inner circumferential portion of the piezoelectric drive body is fixed to an inner circumferential side end portion of the attachment fixing member having a fixing surface region which is fixed in contact with the base and extends in a radial direction.
A vibrating conveying apparatus comprising the rotating vibrator according to claim 1 or 2, and a conveying body which is fixed on the vibrating plate and has a spiral conveying path extending in a direction parallel to a tangent line.

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