JP5864511B2 - Rotating vibrator and vibratory transfer device using the same - Google Patents

Description

  The present invention relates to a rotary vibrator and a vibratory transfer device using the rotary vibrator.

  In general, in a vibration-type transfer device such as a bowl-type parts feeder having a spiral transfer path, a rotary vibrator for reciprocally vibrating a bowl-type transfer body in a direction rotating around an axis is used. For example, as shown in FIG. 9, the rotary vibrator has a diaphragm 2 elastically supported by a vibrator support body 1 through a vibration mechanism 4 including a piezoelectric drive body and a leaf spring. The vibration plate 2 vibrates in such a manner that the vibration mechanism 4 reciprocates in a slightly inclined direction with respect to the horizontal plane along the direction of rotation around the axis 1x. A bowl-shaped transport body 7 is fixed on the vibration plate 2. When a transported object such as a fine electronic component is put into the inner bottom portion 7a of the transport body 7, the transported object is transported upward along the spiral transport path 7b by the vibration described above.

  In the above-described vibration type conveying apparatus, when the vibration plate 2 and the conveyance body 7 vibrate in the above-described manner, the support body 1 receives a reaction force from the vibration plate 2 and the conveyance body 7. By supporting and fixing on a vibration isolator 5 made of rubber, the vibration of the support 1 is absorbed and the vibration is prevented from propagating from the base 3 to the surroundings.

JP 2007-161454 A JP 2008-265967 A

  However, in the vibration isolator 5, the vibration direction of the vibration plate 2 and the conveyance body 7 is set to be slightly inclined with respect to the horizontal plane along the direction of rotation around the axis 1x as described above. Accordingly, the support body 1 is deformed in a complicated manner by receiving a rotational direction around the axis 1x and a vertical stress along the axis 1x from the support body 1, and the support body 1, the vibration plate 2 and the transport body 7 on both sides of the vibration mechanism 4. When the weight of the vibration plate 2 and the transport body 7 is increased, the amplitude of the support body 1 is increased accordingly, so that the normal vibration isolating material 5 may not be able to absorb the vibration. Many. In order to prevent this, it is conceivable that the mass of the support 1 is set sufficiently larger than the total mass of the vibration plate 2 and the transport body 7. This leads to an increase in the size of the entire device and an increase in manufacturing costs.

  Further, if the vibration isolator 5 cannot absorb the vibration of the support 1 as described above, not only the vibration energy easily flows out to the outside, but also the vibration plate 2 and the carrier 7 are elastically supported by the support 1. Therefore, an unnecessary vibration mode other than the originally planned vibration mode necessary for transporting the transported object is increased in the vibration mode of the transport body 7, and as a result, the transported object on the transport path 7b is originally There is also a problem that the transport mode becomes unstable, such as jumping in a direction different from the transport direction, and the transport posture being easily changed.

  Therefore, the present invention solves the above-mentioned problems, and the problem is to provide a rotary vibrator capable of realizing a stable transport mode and reducing the influence of vibrations on the surroundings. is there.

In view of such circumstances, the rotary vibrator (10) of the present invention includes a first support (11), a diaphragm (12) disposed above the first support (11), A first elastic support that elastically connects the second support (13) disposed below the first support (11), the first support (11), and the diaphragm (12). A structure (15); a second elastic support structure (16) that elastically connects the first support body (11) and the second support body (13); and the first support body (11). Rotation excitation means (15b) for applying a rotation excitation force along the direction of rotation about the axis (10x) to the diaphragm (12) with respect to the vibration plate (12), and the second elastic support The structure (16) includes the first support (11) and the second support (13) at three or more positions around the axis (10x). A plate spring having a plate surface having an orientation along a direction of rotation around the axis (10x). der Ru.

In particular, in the present invention, the second elastic member (16b) has a connecting portion on the first support (11) side disposed on the inside in the radial direction, and the second support (13). ) Is connected between the first support (11) and the second support (13) in a posture arranged on the outer side in the radial direction .

  In the present invention, the rotary vibration means (15b) has an orientation on a horizontal plane along a direction rotating around the axis (10x) with respect to the first support (11), and the horizontal plane. A rotational excitation force in a direction inclined at a predetermined angle (θ1) with respect to the vibration plate (12) is applied to the vibration plate (12), and the surface normal of the plate surface of the second elastic member (16b) is the axis (10x) It is preferable to have an orientation on the horizontal plane along the direction of rotation around and a direction inclined with respect to the horizontal plane at a predetermined angle (θ2) on the same side as the predetermined angle (θ1). That is, the inclination direction of the predetermined angle (θ1) in the direction in which the rotational excitation force is applied by the rotary vibration means and the inclination direction of the predetermined angle (θ2) of the surface normal of the second elastic member are the same. Tilt to the side.

  In this case, the first elastic support structure (15) elastically connects the first support (11) and the diaphragm (12) at three or more positions around the axis (10x). A first elastic member (15b, 15c), the first elastic member (15b, 15c) having an orientation on the horizontal plane along a direction of rotation about the axis (10x) and It is desirable to provide a surface normal having a direction inclined at the predetermined angle (θ1) with respect to a horizontal plane. At this time, the first elastic member (15b, 15c) constitutes the rotational excitation means, and an inner end is connected to the first support (11) and the axis (10x) A plate-like piezoelectric driver (15b) having an orientation on the horizontal plane along the direction of rotation around and a surface normal having a direction inclined at the predetermined angle (θ1) with respect to the horizontal plane; Connected between the outer end of the piezoelectric driving body (15b) and the diaphragm (12) and having an orientation on the horizontal plane along the direction of rotation about the axis (10x) and the horizontal plane And an amplification spring (15c) having a surface normal having a direction inclined at the predetermined angle (θ1).

  In the present invention, the second support (13) is preferably elastically supported by a vibration isolating member (17).

  In the present invention, the first elastic member (15b, 15c) is arranged such that a connection portion on the first support (11) side is arranged radially inward with the axis (10x) as the center, It is preferable that the connection portion on the vibration plate (12) side is connected between the first support portion (11) and the vibration plate (12) in a posture arranged on the outer side in the radial direction.

  In the present invention, an angular position around the axis (10x) of the first elastic member (15b, 15c) and an angular position around the axis (10x) of the second elastic member (16b) are: Preferably they are different.

  In the present invention, it is preferable that the angular positions around the axis (10x) of the three or more first elastic members (15a, 15c) are arranged at equal angular intervals, and the angular intervals are different from 90 degrees.

  In the present invention, it is preferable that the angular positions around the axis (10x) of the three or more second elastic members (16b) are arranged at equal angular intervals, and the angular intervals are different from 90 degrees.

  Further, the vibratory conveying device of the present invention is fixed to the rotary vibrator (10) and the vibrating plate (12), or is configured integrally with the vibrating plate (12), and is also conveyed. And a transport body (7) provided with a transport path (7b) for transporting the water.

  Advantageous Effects of Invention According to the present invention, it is possible to achieve an excellent effect that it is possible to provide a rotary vibrator capable of realizing a stable transport mode and reducing the influence of vibration on the surroundings.

It is a disassembled perspective view of the rotary vibrator of embodiment which concerns on this invention. It is a perspective view of the embodiment. It is a front view of the embodiment. It is a top view of the 1st support body of the embodiment. It is a bottom view of the 1st support body of the embodiment. It is a bottom view of the diaphragm of the embodiment. It is a top view of the vibration support mechanism of the embodiment. It is a top view of the 2nd support body and elastic support structure of the embodiment. It is a longitudinal cross-sectional view which shows the structure of the conventional rotary vibrator, the structure of a conveyance body, and the example of an attachment aspect.

  Next, an embodiment of a rotary vibrator according to the present invention and a vibratory conveying apparatus including the same will be described in detail with reference to the accompanying drawings. First, the overall configuration of the rotary vibrator 10 of the present embodiment will be described with reference to FIGS. 1 to 3.

  The rotary vibrator 10 includes a first support body 11 having a cylindrical outer periphery, a substantially disk-shaped vibration board 12 disposed above the first support body 11, and a first support body. 11 and a second support body 13 having a substantially disk shape disposed below 11. The vibration plate 12 is provided with a substantially flat carrier mounting surface 12 a on the upper surface thereof, and is elastically supported by the first support 11 via the vibration support mechanism 15. The first support 11 is elastically supported by the second support via the elastic support structure 16. The second support 13 is elastically supported by a vibration isolating member 17 made of an annular silicone rubber or other rubber material disposed on the base 14.

  The vibration support mechanism 15 constitutes the first elastic support structure and the rotation vibration means. The vibration support mechanism 15 includes a mechanism fixing member 15a that is connected and fixed to the upper surface of the first support body 11, a piezoelectric driving body 15b that is attached to a projecting end portion, which will be described later, of the inner end of the mechanism fixing member 15a, The piezoelectric drive body 15b has three sets of excitation assemblies including an amplification spring 15c made of a leaf spring attached to the outer end of the piezoelectric drive body 15b. The outer end of the amplifying spring 15 c is connected and fixed to a mechanism mounting portion 12 b that protrudes downward from the outer peripheral portion of the vibration plate 12. These three sets of vibration assemblies are arranged at equiangular (120 degree) intervals around the axis 10x. On the upper surface of the first support 11, convex portions 11c are formed at three locations around the axis 10x, and concave portions 11b in the thickness direction are formed between the convex portions 11c. In addition, on the upper surface of the first support 11, a terminal block 15e for electrically connecting each set of piezoelectric drivers 15 and a control drive circuit (not shown) is disposed. Here, the piezoelectric driving body 15 b and the amplification spring 15 c constitute a first elastic member for elastically supporting the vibration plate 12 with respect to the first support body 11.

The elastic support structure 16 constitutes the second elastic support structure. The elastic support structure 16 includes a structure fixing member 16a connected and fixed to the lower surface of the first support 11, and a second elastic member 16b made of a leaf spring attached to the inner end of the structure fixing member 16a. It has three sets of elastic assemblies. The outer end of the second elastic member 16b is connected and fixed to a structure attachment portion 13d that protrudes upward at the outer peripheral portion 13b2 of the second support 13. These three sets of elastic assemblies are spaced equiangularly (120 degrees) around the axis 10x. On the outer peripheral portion 13b2 of the second support 13, a radial recess 13c is formed on the attachment side of the second elastic member 16b of the structural attachment portion 13d.

  Next, a detailed structure of each part will be described with reference to FIGS. 4 to 8 together with FIGS. First, as shown in FIG. 4, the first support 11 is provided with a central hole 11a. On the upper surface around the center hole 11a, the three concave portions 11b and convex portions 11c provided between the concave portions 11b and projecting in the thickness direction are alternately formed around the axis 10x. Each recess 11b has a shape opened radially outward around the axis 10x between the protrusions 11c, and the extension axis of each excitation assembly of the excitation support mechanism 15 extending radially from the axis 10x. It is formed along 15r.

  A flat mechanism fixing surface 11d for fixing the mechanism fixing member 15a of the vibration support mechanism 15 is formed in a portion on the radially inner side of each recess 11b. The mechanism fixing surface 11d is formed in an extended shape having an extending direction parallel to the extending axis 15r. The mechanism fixing surface 11d has a surface normal slightly inclined clockwise with respect to the axis 10x by an inclination angle θ1 described later. In the illustrated example, the extending axis 15r is set at intervals of 120 degrees around the axis 10x. Further, a terminal fixing surface 11e for fixing the terminal block 15e is provided in a range from the set of concave portions 11b to the convex portions 11c on the upper surface of the first support body 11.

  On the lower surface of the first support 11, as shown in FIG. 5, flat and protruding protrusions 11 f provided in three places around the axis 10 x and a radius between these protrusions 11 f Three concave groove portions 11g formed to extend in the direction are provided. These concave groove portions 11g have a shape opened toward the central hole 11a on the radially inner side and opened to the outer periphery on the radially outer side. Each groove 11g is formed along an extending axis 16r extending in the radial direction of each elastic assembly of the elastic support structure 16.

  A flat structure fixing surface 11h for fixing the structure fixing member 16a of the elastic support structure 16 is formed in a portion on the radially inner side of each concave groove portion 11g. The structure fixing surface 11h is formed in an extended shape having an extending direction parallel to the extending axis 16r. The structure fixing surface 11h has a surface normal slightly inclined clockwise with respect to the axis 10x by an inclination angle θ2 described later. Further, on the radially outer edge portion of each concave groove 11g, there are formed widened groove portions 11i and 11j that are expanded forward and backward in the direction of rotation around the axis 10x. These diameter-enlarged groove portions 11 i and 11 j facilitate the work of attaching the outer end portion of the second elastic member 16 b described later to the structure attaching portion 13 d of the second support 13.

  As shown in FIG. 6, the vibration plate 12 includes the mechanism attachment portion 12 b that protrudes downward from the lower surface at three locations around the axis 10 x of the outer peripheral portion. A flat mechanism mounting surface 12c is formed on the illustrated clockwise side of each mechanism mounting portion 12b. These mechanism attachment surfaces 12c are surfaces along the extending axis 15r extending in the radial direction. In the illustrated example, the extending axis 15r is disposed so as to overlap the mechanism mounting surface 12c. A plurality of (six in the illustrated example) recesses 12d in the thickness direction arranged around the axis 10x are formed on the lower surface of the vibration plate 12. By these recesses 12d, the central portion 12e of the diaphragm 12 and a plurality (six in the illustrated example) of rib portions 12f extending radially from the central portion 12e are configured to be thicker than the recess 12d. The mechanism attaching portions 12b are disposed on the outer peripheral sides of the corresponding rib portions 12f. The concave portion 12d, the central portion 12e, and the rib portion 12f provided on the lower surface of the vibration plate 12 ensure the rigidity of the vibration plate 12 when connected to the vibration support mechanism 15 and the transport body 7, while maintaining the rigidity of the vibration plate 12. It has a structure for reducing the weight.

  FIG. 7 is a plan view showing a state in which the vibration support mechanism 15 is arranged in a state of being fixed to the upper surface of the first support 11. The mechanism fixing member 15a has an extended fixed portion extending in parallel with the extending axis 15r. When the fixed portion is fixed to the mechanism fixing surface 11d of the first support 11, the mechanism is fixed. The region has the same extended shape as described above, which is in close contact with the surface 11d. In the illustrated example, two fixing holes are formed in the mechanism fixing member 15a along the extending axis 15r, and the illustrated bolts respectively inserted into these fixing holes are screw holes in which the mechanism fixing surface 15a is opened. The mechanism fixing member 15a is fixed to the first support 11 by being screwed into the first support 11 or the like.

  The mechanism fixing member 15a is formed with a protruding end portion that protrudes counterclockwise in the figure from the radial inner end of the fixed portion, and the radial inner end portion of the piezoelectric driving body 15b is a bolt, washer, or the like at the protruding end portion. It is fixed by the fixing means. The piezoelectric driver 15b extends straight in the radial direction along the extending axis 15r from the inner end attached to the protruding end of the mechanism fixing member 15a. The piezoelectric driving body 15b has a plate-like structure (unimorph type or bimorph type structure) in which a piezoelectric body (not shown) is stuck on an elastic substrate such as a shim plate, and a voltage is applied to the front and back of the piezoelectric body. Thus, the plate-like body extending in the radial direction as a whole is bent and deformed in the direction of rotation around the axis 10x. Since such a piezoelectric driving body has a well-known structure, the details thereof will be omitted. However, by applying an alternating voltage having a predetermined frequency to the piezoelectric body, the piezoelectric body is bent in a manner of alternately bending in the opposite direction, and along the rotating direction. Generate reciprocating vibration.

  An inner end portion of an amplification spring 15c made of a leaf spring is fixedly attached to the outer end portion of the piezoelectric driving body 15b by a fixing means such as a bolt or a washer. The amplification spring 15c as a whole extends in the radial direction along the extending axis 15r, but includes a curved portion that is curved in a direction rotating around the axis 10x. In the amplifying spring 15c, an extension portion (inner end portion) attached to the outer end portion of the piezoelectric driving body 15b and an attachment portion (outer end portion) of the vibration plate 12 to the mechanism attachment surface 12c both extend in the radial direction. While extending linearly along the axis 15r, the bending portion provided between the two attachment portions is curved in an S shape. Since the amplification spring 15c is easily expanded and contracted in the radial direction by forming the curved portion, the arc-shaped vibration locus of the outer end portion of the piezoelectric driving body 15b when the piezoelectric driving body 15b vibrates, and the vibration plate It is possible to absorb the deviation from the arc-shaped vibration locus centering on the axis 10x when the 12 mechanism mounting portions 12b vibrate, and to stabilize the vibration mode of the vibration plate 12, and to drive the piezoelectric drive. The load applied to the body 15b can be reduced.

  The piezoelectric driving body 15b and the amplification spring 15c as a whole extend in the radial direction along the extending axis 15r and are fixed to the mechanism mounting portion 12b on the outer peripheral portion of the vibration plate 12. At this time, when the piezoelectric driving body 15b vibrates, the vibration supporting mechanism 15 vibrates in the direction indicated by the arrow in FIG. 7, that is, the direction having the azimuth 15s on the horizontal plane along the direction of rotation around the axis 10x. The board 12 is vibrated. Here, the horizontal plane is a plane orthogonal to the axis 10x, and the orientation on the horizontal plane is the orientation indicated by the projection component of the vector along the horizontal plane when a vector indicating a certain direction is projected onto the horizontal plane. Say.

  At this time, in this embodiment, the plate surfaces of the piezoelectric driving body 15b and the amplification spring 15c have a surface normal 15p indicated by an arrow in FIGS. 1 and 7, and the surface normal 15p is the axis 10x as described above. Is provided with a surface orientation 15s on a horizontal plane along the direction of rotation around the horizontal plane, but has a direction inclined at an inclination angle θ1 with respect to the horizontal plane. That is, the surface normal 15p has an orientation on a horizontal plane along the direction of rotation about the axis 10x, and has a direction inclined at an inclination angle θ1 with respect to the horizontal plane.

  In the present embodiment, the mechanism fixing surface 11d of the first support 11 has a surface normal that is inclined so as to have an inclination angle θ1 with respect to the axis 10x toward the direction of rotation about the axis 10x. The mechanism fixing member 15a is mounted and fixed on the mechanism fixing surface 11d, whereby the plane orientation 15p of the plate surfaces of the piezoelectric driver 15p and the amplification spring 15c is set. Further, the mechanism mounting surface 12c of the mechanism mounting portion 12b of the vibration plate 12 to which the outer end portion of the amplification spring 15c is mounted is also tilted at an inclination angle θ1 with respect to the axis 10x so as to match the surface orientation 15p. It is a surface along.

  In FIG. 7, the surface normal line 15p is a direction heading obliquely upward at an inclination angle θ1 with respect to the horizontal plane in the counterclockwise direction. And when the piezoelectric drive body 15b and the amplification spring 15c comprised by plate shape bend and vibrate, the vibration direction turns into the direction along the said surface normal line 15p. Therefore, when the piezoelectric driving body 15b vibrates, the vibration is transmitted to the horizontal plane through the amplification spring 15c along the direction 15s on the horizontal plane shown in FIG. 7 and counterclockwise in FIG. On the other hand, the diaphragm 12 is vibrated in a direction obliquely upward at an inclination angle θ1.

  FIG. 8 is a plan view showing a state in which the elastic support structure 16 is arranged in a manner fixed to the upper surface of the second support 13. The structural fixing member 16a has an extended fixed portion extending in parallel with the extending axis 16r. When the fixed portion is fixed to the structural fixing surface 11h of the first support 11, the structural fixing is performed. The region has the same extended shape as described above, which is in close contact with the surface 11h. In the illustrated example, two fixing holes are formed in the structure fixing member 16a along the extending axis 16r, and the illustrated bolts inserted respectively into these fixing holes are screw holes in which the structure fixing surface 11h is opened. The structural fixing member 16a is fixed to the first support 11 by being screwed into the first support 11 or the like.

  The inner end portion of the second elastic member 16b made of a leaf spring is fixedly attached to the side surface of the structure fixing member 16a by a fixing means such as a bolt or a washer. The second elastic member 16 b extends in the radial direction along the extending axis 16 r as a whole, and its outer end is fixed to the second support 13. In the illustrated example, the second elastic member 16r extends linearly in the radial direction.

  The second support 13 is provided with a central hole 13a, an inner peripheral part 13b1 around the central hole 13a, and an outer peripheral part 13b2 configured to be slightly thicker than the inner peripheral part 13b1. At three locations arranged at equiangular intervals (120 degrees) around the axis 10x of the outer peripheral portion 13b2, radial recesses 13c are formed in a cutout shape. In addition, a structure attachment portion 13d that protrudes upward from the upper surface of the second support 13 is formed at a position facing each concave portion 13c of the outer peripheral portion 13b from the counterclockwise direction in the figure. A flat structure attachment surface 13e is formed on the clockwise side of each structure attachment portion 13d. The outer end portion of the second elastic member 16b is attached and fixed to the structure attachment surface 13e by a fixing means such as a bolt or a washer. In the present embodiment, since the upper surface of the inner peripheral portion 13b1 is configured to be lower than the upper surface of the outer peripheral portion 13b2, the structural fixing member 16a is less likely to touch the upper surface of the second support 13, and therefore the second The elastic member 16b can be disposed close to the upper surface of the second support 13, and as a result, the distance between the first support 11 and the second support 13 can be reduced.

  In the present embodiment, the extension axis 15r where the mechanism assembly of the vibration support mechanism 15 is arranged and the extension axis 16r where the structure assembly of the elastic support structure 16 is arranged are both around the axis 10x. It is set at three locations at angular intervals. However, the number of each assembly should just be three or more, and the number of the excitation support mechanism 15 and the elastic support structure 16 may differ. However, when arranged at equal angular intervals, the rotation excitation force application efficiency and the rotation balance can be improved and the vibration system stability can be improved by avoiding 90 ° intervals as much as possible. It is preferable for reducing the load applied to 15b. Further, the relationship between the angular positions of the extending axis 15r and the extending axis 16r is not particularly limited, but in the present embodiment, the assembly between the diaphragm 12, the first support 11 and the second support 13 is performed. In consideration of workability, the balance of the rigidity and mass distribution of the first support 11, the balance of the entire vibration system, and the like, the angular positions of the extending axes 15r and 16r are shifted by about 18 degrees.

  At this time, in this embodiment, the plate surface of the second elastic member 16b faces the surface normal 16p indicated by the arrow shown in FIGS. 1 and 8, and this surface normal 16p is around the axis 10x as described above. Although it has a plane orientation on a horizontal plane along the direction of rotation, the direction is inclined at an inclination angle θ2 with respect to the horizontal plane. That is, the surface normal 16p has a direction on a horizontal plane along the direction of rotation around the axis 10x, and is inclined with an inclination angle θ2 with respect to the horizontal plane.

  In the present embodiment, the structure fixing surface 11h of the first support 11 has a surface normal that is inclined so as to have an inclination angle θ2 with respect to the axis 10x toward the direction of rotation about the axis 10x. Then, the surface fixing direction 16p of the plate surface of the second elastic member 16b is set by mounting and fixing the structure fixing member 16a on the structure fixing surface 11h. Further, the structure attachment surface 13e of the structure attachment portion 13d of the second support 13 to which the outer end portion of the second elastic member 16b is attached is also inclined with respect to the axis 10x so as to match the surface orientation 16p. It is a surface along the direction inclined by the angle θ2.

  In FIG. 8, the surface normal 16 p is a direction that is inclined downward at an inclination angle θ <b> 2 with respect to the horizontal plane in the clockwise direction. And when the 2nd elastic member 16b comprised by plate shape bends and vibrates, the vibration direction turns into the said surface normal line 16p. Therefore, when the first support body 11 vibrates due to the reaction of the piezoelectric driving body 15 b, the first support body 11 is moved relative to the second support body 13 based on the elastic support by the second elastic member 16 b. 8 oscillates in the direction along the azimuth 16 s on the horizontal plane shown in FIG. 8 and in the diagonally downward direction at an inclination angle θ2 with respect to the horizontal plane in the clockwise direction of FIG. 8.

  In the present embodiment, the vibratory transport device can be configured by fixing the transport body 7 shown in FIG. 9 to the vibration plate of the rotary vibrator 10 having the above-described configuration with the bolts 8 or the like. In this case, when the conveyed product is accommodated in the inner bottom portion 7 a of the conveying member 7, the conveyed item is conveyed upward along the spiral conveying path 7 a by the vibration of the conveying member 7 generated by the rotary vibrator 10. The conveyance mode of the conveyed product is determined by the frequency, amplitude, and direction of vibration of the vibration plate 12 of the rotary vibrator 10. Here, the inclination angle θ1 and the inclination angle θ2 are preferably adjusted according to the vibration frequency, the spring constants of the amplification spring 15c and the second elastic member 16b, the size and mass of the conveyed object, etc. Is preferably within a range of 1 to 10 degrees, and particularly preferably within a range of 2 to 7 degrees. Here, it is desirable that the inclination angles θ1 and θ2 are equal, but the inclination angles θ1 and θ2 are made different according to the mass and size of the first support 11, the second support 13, and the transport body 7. Sometimes it is better to do this.

  In the present embodiment, a rotational excitation force is applied between the first support body 11 and the vibration plate 12 by the piezoelectric driving body 15b serving as a rotational vibration means, so that the axis 10x is rotated around the amplification spring 15c. Vibrations in the direction along the direction of rotating are generated in the diaphragm 12. At this time, the first support member 11 is elastically supported by the second support member 13 via the second elastic member 16b, and the second elastic member 16b rotates in the direction of rotation around the axis 10x. By being configured by a leaf spring having a plate surface having a direction along the first elastic support, the first support 11 can easily rotate along the direction of rotation around the axis 10x with respect to the second support 13. Is in a state. For this reason, the first support 11 vibrates in the opposite phase to the vibration plate 12 based on the reaction force received when the vibration plate 12 is vibrated. At this time, since the reaction force received by the first support 11 is absorbed by the second elastic member in the direction of rotation around the axis 10x, the posture of the first support 11 with respect to the axis 10x is stable. A stable vibration state can be obtained. Therefore, it is possible to suppress the support body 1 which is only installed through the vibration isolator 5 as in the conventional case from vibrating irregularly by the reaction force, and as a result, elastic support is provided on the first support body 11. The vibration mode of the vibration plate 12 is also more stable. For this reason, the transport posture of the transported material on the transport path 7b of the transport body 7 is also stable, and jumping and posture change are reduced, so that high-speed transport, reduction of dirt on the transported material, improvement in alignment efficiency, and the like are achieved. Can do.

  In addition, the reaction force received by the first support body 11 is absorbed between the first support body 11 and the second support body 13 via the second elastic member 16b. The outflow of vibration energy from the second support 13 to the surroundings via the vibration isolating member 17 can be suppressed, and the influence of surrounding vibrations can be reduced.

  In the present embodiment, in particular, the surface normal 16p of the plate surface of the second elastic member 16c has an orientation on a horizontal plane along the direction of rotation about the axis 10x, and an inclination angle θ2 with respect to the horizontal plane. Therefore, the first support 11 has an inclination angle θ1 of the surface normal 15p, which is the direction of vibration that the first support 11 gives to the diaphragm 12. It is elastically supported by the second support 13 so that it can be easily displaced in the direction inclined to the same side as the direction of inclination. Thereby, not only the direction of rotation around the axis line 10x as described above, but also the vertical movement of the mode that inhibits the conveyance due to the vibration component in the vibration direction inclined at the inclination angle θ1 is offset or reduced.

  That is, in the conventional rotary vibration machine and the vibratory transfer device shown in FIG. 9, the support 1 is only supported on the base 3 via the vibration isolator 5, so the support 1 is When the reaction force received from 2 vibrates in a complicated manner in the rotational direction and the vertical direction, the vibration manner of the diaphragm 2 is destabilized. This instability of the vibration state occurs because the reaction force received by the support 1 from the vibration plate 2 cannot be received in a manner that does not affect the originally planned vibration direction of the vibration plate 2. However, in this embodiment, as described above, the elastic support direction inclined by the inclination angle θ1 of the first elastic member and the elastic support direction inclined by the inclination angle θ2 of the second elastic member 16b are inclined to the same side. Therefore, when the first support 11 and the vibration plate 12 vibrate in opposite phases, the first elastic member (piezoelectric drive) having a vertical interval between the first support 11 and the vibration plate 12 is used. The mode of increase / decrease by the body 15b and the amplification spring 15c) and the mode of increase / decrease by the second elastic member 16b in the vertical interval between the first support 11 and the second support 13 are opposite to each other. Therefore, the reaction force that the first support 11 receives from the vibration plate 12 is well absorbed between the second support 13 and, as a result, the influence of the vibration plate 12 on the originally planned vibration mode. Can be reduced. The reduction of this influence is such that the vibration mode of the vibration plate 12 and the transport body 7 is close to the vibration mode that contributes to the originally planned transport force, and does not contribute to the transport force or obstructs the transport. Suppresses the generation of vibration modes.

  In the present embodiment, a first elastic member including a piezoelectric driving body 15b and an amplification spring 15c is connected between the first support body 11 and the vibration plate 12, and the first support body 11 of the first elastic member. The connection portion on the side of the first elastic member is arranged on the inner side in the radial direction, and the connection portion on the vibration plate 12 side of the first elastic member is arranged on the outer side in the radial direction. The excitation force is received from the first elastic member on the outer side in the radial direction from the position where the reaction force is received from the first elastic member. For this reason, the relationship between the first support 11 and the vibration plate 12 depends on the magnitude of the inertia moment of the support 11 and the vibration plate 12, but if the inertia moment is the same, the vibration plate 12 side Is large, and the amplitude on the first support 11 side is small. However, in actuality, the carrier 7 is mounted on the vibration plate 12, and the first support 11 is connected to the second support via the second elastic member 16b. The relationship between the total moment of inertia of the vibration plate 12 and the transport body 7 and the influence of being connected to the second support 13 by the second elastic member 16b (mainly the elastic resistance by the second elastic member 16b) are considered. This depends on the relationship with the moment of inertia of the first support 11.

  On the other hand, the second elastic member 16b is connected between the first support body 11 and the second support body 13, and the connection portion of the second elastic member 16b on the first support body 11 side has a radius. The second support member 13 is disposed on the inner side in the direction, and the connection portion of the second elastic member 16b on the second support member 13 side is disposed on the outer side in the radial direction. The elastic support force is received from the second elastic member 16b on the radially inner side from the position where the reaction force is received from the second elastic member. Thereby, in the relationship between the first support body 11 and the second support body 13, the elastic support force toward the surface orientation 16p that the first support body 11 receives from the second elastic member 16b is the axis line. Since it is given at a position close to 10x, the moment of the first support 11 caused by the reaction force received from the first elastic member is received with a relatively small spring constant as a result. Accordingly, since the elastic support resistance along the direction of the reaction force received from the vibration plate 12 of the first support 11 is substantially reduced, an unnecessary vibration mode caused by the elastic support of the first support 12 is reduced. Generation | occurrence | production is suppressed, The vibration aspect of the vibration board 12 and the conveyance body 7 can be brought further closer to the vibration mode originally planned, and the conveyance aspect of a conveyed product can be stabilized further.

  The above effect seems to be obtained in the same manner by reducing the spring constant of the second elastic member 16b. In practice, however, in order to ensure the support rigidity and support stability in the direction of the axis 10x. It is difficult to reduce the spring constant of the surface normal (direction perpendicular to the plate surface) of the plate spring while maintaining the spring constant in the vertical direction (direction along the plate surface) of the plate spring at a high level. Therefore, the above-described configuration of the present embodiment secures the support rigidity and stability in the vertical direction along the axis 10x, and allows the reaction along the surface orientation 16p of the first support body 11 to have a relatively small elastic resistance. It is advantageous in that it can be received.

Note that the rotary vibrator and the vibratory transfer device according to the present invention are not limited to the above-described illustrated examples, and various modifications can be made without departing from the scope of the present invention .

For example , in the vibration type conveyance device of the above embodiment, the conveyance body 7 is attached and fixed on the vibration plate 12 of the rotary vibrator 10, but the conveyance body 7 may be configured integrally with the vibration plate 12. Furthermore, in the rotary vibrator and the vibratory transfer device according to the above-described embodiment, the vibration support mechanism 15 uses the piezoelectric driving body 15b that is connected in series with the amplification spring 15c and constitutes the first elastic member as the rotation driving means. However, for example, the first elastic member is composed only of a leaf spring, and the rotary vibration means is provided separately from the first elastic support structure. You may comprise by the electromagnetic drive body which gives an electromagnetic force between the 1st support body 11 and the diaphragm 12 which were made.

DESCRIPTION OF SYMBOLS 10 ... Rotary vibrator, 11 ... 1st support body, 11a ... Center hole, 11b ... Concave part, 11c ... Convex part, 11d ... Mechanism fixing surface, 11e ... Terminal fixing surface, 11f ... Convex part, 11g ... Concave groove part, 11h: Structure fixing surface, 11i, 11j: Expanding groove, 12 ... Vibration plate, 12a ... Conveying body mounting surface, 12b ... Mechanism mounting portion, 12c ... Mechanism mounting surface, 12d ... Recessed portion, 12e ... Center portion, 12f ... Rib portion, 13 ... second support, 13a ... center hole, 13b1 ... inner peripheral portion, 13b2 ... outer peripheral portion, 13c ... concave portion, 13d ... structural attachment portion, 13e ... structural attachment surface, 14 ... base, 15 ... Excitation support mechanism, 15a ... Mechanism fixing member, 15b ... Piezoelectric driving body, 15c ... Amplifying spring, 15e ... Terminal block, 16 ... Elastic support structure, 16a ... Structure fixing member, 16b ... Second elastic member, 17 ... Anti-corrosion Vibration member, θ1, θ2 ... inclination angle, 7 ... transport body, 7a ... inner bottom, 7b ... conveying path

Claims (7)

A first support (11);
A diaphragm (12) disposed above the first support (11);
A second support (13) disposed below the first support (11);
A first elastic support structure (15) for elastically connecting the first support (11) and the diaphragm (12);
A second elastic support structure (16) for elastically connecting the first support (11) and the second support (13);
Rotational excitation means (15b) for applying a rotational excitation force along the direction of rotation around the axis (10x) to the diaphragm (12) with respect to the first support (11);
Comprising
The second elastic support structure (16) is a second elastic connection that elastically connects the first support (11) and the second support (13) at three or more locations around the axis (10x). The elastic member (16b)
It said second elastic member (16b) is Ri plate Banedea comprising a plate surface having an orientation along a direction of rotation about said axis (10x),
In the second elastic member (16b), the connection portion on the first support body (11) side is disposed on the inner side in the radial direction, and the connection portion on the second support body (13) side is rotary vibrator, wherein connected Rukoto between the said radially of the deployed position outside the first support (11) and said second support (13). The rotational excitation means (15b) has an orientation on a horizontal plane along a direction of rotation around the axis (10x) with respect to the first support (11), and is predetermined with respect to the horizontal plane. A rotational excitation force in a direction inclined at an angle (θ1) is applied to the diaphragm (12),
The surface normal of the plate surface of the second elastic member (16b) has an orientation on the horizontal plane along the direction of rotation about the axis (10x) and the predetermined angle (θ1) with respect to the horizontal plane. The rotary vibrator according to claim 1, wherein the rotary vibrator has a direction inclined at a predetermined angle (θ2) on the same side as.   The first elastic support structure (15) is a first elastic member that elastically connects the first support (11) and the diaphragm (12) at three or more locations around the axis (10x). (15b, 15c), and the first elastic support member (15b, 15c) has an orientation on the horizontal plane along the direction of rotation about the axis (10x) and with respect to the horizontal plane. The rotary vibrator according to claim 2, further comprising a surface normal having a direction inclined at the predetermined angle (θ1). The first elastic support structure (15) includes first elastic members (15b, 15c), and the first elastic members (15b, 15c) are arranged on the first support body (11) side. Between the first support and the vibration plate (12) in a posture in which the connection portion is disposed on the inner side in the radial direction and the connection portion on the vibration plate (12) side is disposed on the outer side in the radial direction. rotational vibration machine according to claim 1 or 2, characterized in that it is connected. The first elastic member (15b, 15c)
The rotary excitation means is configured, and an inner end is connected to the first support (11) and has an orientation on the horizontal plane along a direction rotating around the axis (10x) and A plate-like piezoelectric driver (15b) having a surface normal (15p) having a direction inclined at the predetermined angle (θ1) with respect to a horizontal plane;
The axis (10x) is connected between the outer end of the piezoelectric driving body (15b) and the diaphragm (12).
An amplification spring (15c) having a surface normal (15p) having an orientation on the horizontal plane along the direction of rotation around and a direction inclined with respect to the horizontal plane at the predetermined angle (θ1);
The rotary vibrator according to claim 3 , wherein:   The rotary vibrator according to any one of claims 1 to 5, wherein the second support (13) is elastically supported by a vibration isolating member (17).   The rotary vibrator (10) according to any one of claims 1 to 6 and the diaphragm (12) are fixed to or integrated with the diaphragm (12), And a conveying body (7) provided with a conveying path (7b) for conveying.