JP6240123B2 - Vibrating transfer device - Google Patents

Vibrating transfer device Download PDF

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JP6240123B2
JP6240123B2 JP2015138883A JP2015138883A JP6240123B2 JP 6240123 B2 JP6240123 B2 JP 6240123B2 JP 2015138883 A JP2015138883 A JP 2015138883A JP 2015138883 A JP2015138883 A JP 2015138883A JP 6240123 B2 JP6240123 B2 JP 6240123B2
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順一 原
順一 原
神戸 祐二
祐二 神戸
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Daiichi Co Ltd
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Description

本発明は振動式搬送装置に関する。特に、直線状に部品を搬送する搬送装置、いわゆるリニアパーツフィーダ(Linear Parts Feeder)に好適な機構に関する。   The present invention relates to a vibratory transfer device. In particular, the present invention relates to a mechanism suitable for a conveying device that conveys parts in a straight line, that is, a so-called linear parts feeder.

従来から、上側質量体と基準質量体と下側質量体とを上下方向に配置して、圧電駆動体によって、上下に位置する上側質量体と下側質量体を同位相で振動させるとともに、その逆位相で真ん中の基準質量体を振動させて、上側質量体に設けられた搬送体の搬送路に沿って搬送物を搬送する振動式搬送装置が考案されている。この振動式搬送装置は上側質量体と下側質量体の振動による反力を基準質量体の振動によって相殺又は減殺するようになっているとともに、上側質量体と基準質量体によって生じる回転モーメントと、基準質量体と下側質量体によって生じる回転モーメントとを相殺又は減殺するようになっている。これにより、装置から設置面へ漏洩する振動を低減できるとともに、装置のピッチング、すなわち、搬送方向に対して直交する左右方向の軸線周りの振動を低減できる。例えば、特許文献1と特許文献2に記載されている。   Conventionally, the upper mass body, the reference mass body, and the lower mass body are arranged in the vertical direction, and the upper and lower mass bodies positioned in the upper and lower positions are vibrated in the same phase by the piezoelectric driving body. There has been devised a vibratory transfer device that vibrates a reference mass body in the middle in an opposite phase and transports a transported object along a transport path of a transport body provided on an upper mass body. This vibratory transfer device is designed to cancel or reduce the reaction force due to the vibration of the upper mass body and the lower mass body by the vibration of the reference mass body, and the rotational moment generated by the upper mass body and the reference mass body, The rotational moment generated by the reference mass body and the lower mass body is offset or reduced. Thereby, vibration leaking from the apparatus to the installation surface can be reduced, and pitching of the apparatus, that is, vibration around the axis in the left-right direction orthogonal to the transport direction can be reduced. For example, it is described in Patent Document 1 and Patent Document 2.

特許文献1に記載された振動式搬送装置は、基準質量体と上側圧電駆動部と上側増幅ばねと上側質量体とが順次接続されるとともに、基準質量体と下側圧電駆動部と下側増幅ばねと下側質量体とが順次接続される。このうち、上側増幅ばねと下側増幅ばねは上側圧電駆動部と下側圧電駆動部の変形量をそれぞれ増幅するためのものである。この場合において、上側圧電駆動部と上側増幅ばねが上下方向に配列されるとともに、下側圧電駆動部と下側増幅ばねが上下方向に配列される。なお、上側圧電駆動部と下側圧電駆動部は一体形成されており、1つの圧電駆動体の上側部分と下側部分とにそれぞれ相当する。   In the vibratory transfer device described in Patent Document 1, a reference mass body, an upper piezoelectric drive unit, an upper amplification spring, and an upper mass body are sequentially connected, and a reference mass body, a lower piezoelectric drive unit, and a lower amplification are connected. The spring and the lower mass body are sequentially connected. Among these, the upper amplification spring and the lower amplification spring are for amplifying the deformation amounts of the upper piezoelectric drive unit and the lower piezoelectric drive unit, respectively. In this case, the upper piezoelectric drive unit and the upper amplification spring are arranged in the vertical direction, and the lower piezoelectric drive unit and the lower amplification spring are arranged in the vertical direction. Note that the upper piezoelectric drive unit and the lower piezoelectric drive unit are integrally formed and correspond to an upper part and a lower part of one piezoelectric drive body, respectively.

図7は特許文献2に記載された振動式搬送装置の一部分解斜視図である。図7に示すように、特許文献2に記載された振動式搬送装置は、基準質量体1と下側圧電駆動部3adと上側増幅ばね4aと上側質量体2Aとが順次接続されるとともに、基準質量体1と上側圧電駆動部3auと下側増幅ばね5aと下側質量体2Bとが順次接続される。この状態において、下側圧電駆動部3adと上側増幅ばね4aは上下方向に対して直交する搬送方向に配列されるとともに、上側圧電駆動部3auと下側増幅ばね5aは搬送方向に配列される。このため、上側質量体2Aと基準質量体1と下側質量体2Bとにおける上下方向の間隔を狭めることができ、装置全体の高さを低減できる。   FIG. 7 is a partially exploded perspective view of the vibratory transfer device described in Patent Document 2. As shown in FIG. As shown in FIG. 7, the vibratory transfer apparatus described in Patent Document 2 includes a reference mass body 1, a lower piezoelectric drive unit 3ad, an upper amplification spring 4a, and an upper mass body 2A that are sequentially connected, and a reference mass body. The mass body 1, the upper piezoelectric drive unit 3au, the lower amplification spring 5a, and the lower mass body 2B are sequentially connected. In this state, the lower piezoelectric drive unit 3ad and the upper amplification spring 4a are arranged in the conveyance direction orthogonal to the vertical direction, and the upper piezoelectric drive unit 3au and the lower amplification spring 5a are arranged in the conveyance direction. For this reason, the space | interval of the up-down direction in 2 A of upper mass bodies, the reference | standard mass body 1, and the lower mass body 2B can be narrowed, and the height of the whole apparatus can be reduced.

ここで、下側圧電駆動部3adと上側圧電駆動部3auは一体形成されており、1つの圧電駆動体3aの下側部分と上側部分とにそれぞれ相当する。上側増幅ばね4aと下側増幅ばね5aとは上下方向に対して直交する幅方向(左右方向)に互いに配列されているとともに、それぞれ圧電駆動体3aに対して搬送方向に配列されている。この状態において、下側増幅ばね5aが圧電駆動体3aの左上部分に接続するとともに、上側増幅ばね4aが圧電駆動体3aの右下部分に接続する。これにより、装置全体をコンパクトに構成できる。なお、圧電駆動体3aの中間部分は基準質量体1と接続する。   Here, the lower piezoelectric driving unit 3ad and the upper piezoelectric driving unit 3au are integrally formed and correspond to a lower part and an upper part of one piezoelectric driving body 3a. The upper amplification spring 4a and the lower amplification spring 5a are arranged in the width direction (left-right direction) orthogonal to the up-down direction and are arranged in the transport direction with respect to the piezoelectric driving body 3a. In this state, the lower amplification spring 5a is connected to the upper left portion of the piezoelectric driving body 3a, and the upper amplification spring 4a is connected to the lower right portion of the piezoelectric driving body 3a. Thereby, the whole apparatus can be comprised compactly. The intermediate portion of the piezoelectric driving body 3a is connected to the reference mass body 1.

特許第5460903号公報Japanese Patent No. 5460903 特許第5684881号公報Japanese Patent No. 5648881

特許文献1に記載された振動式搬送装置は、上側圧電駆動部と上側増幅ばねが上下方向に配列されるとともに、下側圧電駆動部と下側増幅ばねが上下方向に配列されるので、装置全体の高さが大きくなり、装置が不安定になるという問題がある。   Since the upper piezoelectric drive unit and the upper amplification spring are arranged in the vertical direction, and the lower piezoelectric drive unit and the lower amplification spring are arranged in the vertical direction, the vibratory transfer device described in Patent Document 1 There is a problem that the overall height increases and the apparatus becomes unstable.

特許文献2に記載された振動式搬送装置は、上側圧電駆動部3auと下側増幅ばね5aが搬送方向に配列されるとともに、下側圧電駆動部3adと上側増幅ばね4aが搬送方向に配列されるので、装置全体の高さを低減できる。しかしながら、上側圧電駆動部3auが下側増幅ばね5aを介して下側質量体2Bに接続されるとともに、下側圧電駆動部3adが上側増幅ばね4aを介して上側質量体2Aに接続されるので、特許文献1とは接続態様が異なる。また、図7に示すように、特許文献2に記載された振動式搬送装置は、下側増幅ばね5aが圧電駆動体3aの左上部分に接続するとともに、上側増幅ばね4aが圧電駆動体3aの右下部分に接続するので、下側増幅ばね5aと上側増幅ばね4aの圧電駆動体3aに対する接続が複雑であり、圧電駆動体3aがねじれる方向に振動して、装置が首振り、つまり、上下方向の軸線周りに振動するおそれがあるという問題がある。この首振りは搬送体(上側質量体2A)の全体に亘って搬送速度が不均一になったり、搬送物の姿勢が乱れたりすることを引き起こす。   In the vibratory conveyance device described in Patent Document 2, the upper piezoelectric drive unit 3au and the lower amplification spring 5a are arranged in the conveyance direction, and the lower piezoelectric drive unit 3ad and the upper amplification spring 4a are arranged in the conveyance direction. Therefore, the height of the entire apparatus can be reduced. However, the upper piezoelectric drive unit 3au is connected to the lower mass body 2B via the lower amplification spring 5a, and the lower piezoelectric drive unit 3ad is connected to the upper mass body 2A via the upper amplification spring 4a. The connection mode is different from Patent Document 1. Further, as shown in FIG. 7, in the vibratory transfer device described in Patent Document 2, the lower amplification spring 5a is connected to the upper left portion of the piezoelectric driving body 3a, and the upper amplification spring 4a is connected to the piezoelectric driving body 3a. Since the connection is made to the lower right part, the connection of the lower amplification spring 5a and the upper amplification spring 4a to the piezoelectric drive body 3a is complicated, and the apparatus vibrates in the direction in which the piezoelectric drive body 3a is twisted. There is a problem that it may vibrate around the direction axis. This swinging causes the conveyance speed to be non-uniform over the entire conveyance body (upper mass body 2A) and the posture of the conveyance object to be disturbed.

そこで、本発明は上記問題点を解決するものであり、その課題は、上側圧電駆動部が上側増幅ばねを介して上側質量体に接続されるとともに、下側圧電駆動部が下側増幅ばねを介して下側質量体に接続される振動式搬送装置において、上側増幅ばねと下側増幅ばねの上下方向の長さを確保しつつ、装置全体の高さを低減できる振動式搬送装置を提供することにある。   Therefore, the present invention solves the above problems, and the problem is that the upper piezoelectric drive unit is connected to the upper mass body via the upper amplification spring, and the lower piezoelectric drive unit is connected to the lower amplification spring. In the vibratory transfer device connected to the lower mass body via the above, a vibratory transfer device capable of reducing the overall height of the device while ensuring the vertical lengths of the upper and lower amplification springs is provided. There is.

上記課題を解決するための本発明の振動式搬送装置は、搬送方向に向いた板面を有する板ばねを備えた一対の防振ばねと、前記一対の防振ばねによって支持され、前記一対の防振ばねのそれぞれが前記搬送方向の前後位置で弾性接続された基準質量体と、前記基準質量体の上方に配置された上側質量体と、前記基準質量体の下方に配置された下側質量体と、前記搬送方向の前後位置で前記基準質量体から上方へそれぞれ突出し、前記搬送方向に向いた板面を有する板ばねを含む一対の上側部分と、前記搬送方向の前後位置で前記上側質量体にそれぞれ弾性接続され、前記搬送方向に向いた板面を有する板ばねからなる一対の上側増幅ばねと、前記搬送方向の前後位置で前記基準質量体から下方へそれぞれ突出し、前記搬送方向に向いた板面を有する板ばねを含む一対の下側部分と、前記搬送方向の前後位置で前記下側質量体にそれぞれ弾性接続され、前記搬送方向に向いた板面を有する板ばねからなる一対の下側増幅ばねと、前記基準質量体と前記上側質量体の間、及び、前記基準質量体と前記下側質量体の間の双方に加振力を与え、前記上側質量体と前記下側質量体を同位相で振動させるとともに、前記上側質量体と前記下側質量体の振動に対して前記基準質量体を逆位相で振動させる加振装置と、を具備し、前記上側質量体と前記下側質量体の少なくともいずれか一方に搬送物を搬送する搬送路が設けられ、前記一対の上側部分と前記一対の上側増幅ばねはそれぞれ搬送方向に配列されるとともに、前記一対の下側部分と前記一対の下側増幅ばねはそれぞれ搬送方向に配列され、前記基準質量体と前記一対の上側部分と前記一対の上側増幅ばねと前記上側質量体とが順次接続されるとともに、前記基準質量体と前記一対の下側部分と前記一対の下側増幅ばねと前記下側質量体とが順次接続され、前記一対の上側増幅ばねと前記上側質量体の接続位置は、前記一対の上側部分と前記一対の上側増幅ばねの接続位置より下方に位置し、前記一対の下側増幅ばねと前記下側質量体の接続位置は、前記一対の下側部分と前記一対の下側増幅ばねの接続位置より上方に位置することを特徴とする。
In order to solve the above problems, the vibration transfer device of the present invention is supported by a pair of vibration isolation springs having a plate spring having a plate surface facing in the conveyance direction, the pair of vibration isolation springs, and the pair of vibration isolation springs. A reference mass body in which each of the anti-vibration springs is elastically connected at the front and rear positions in the transport direction, an upper mass body arranged above the reference mass body, and a lower mass arranged below the reference mass body A pair of upper portions including a body , a plate spring projecting upward from the reference mass body at the front-rear position in the transport direction and having a plate surface facing the transport direction, and the upper mass at the front-rear position in the transport direction A pair of upper amplifying springs each having a plate surface elastically connected to the body and having a plate surface facing the transport direction, and projecting downward from the reference mass body at the front and rear positions in the transport direction, and facing the transport direction. the stomach plate surface A lower portion pair, including a leaf spring which, the are in longitudinal position in the conveying direction respectively elastically connected to the lower mass, a pair of lower amplification spring consisting of a leaf spring having a plate surface facing the transport direction And applying an excitation force between the reference mass body and the upper mass body and between the reference mass body and the lower mass body, and the upper mass body and the lower mass body are in phase. And a vibration device that vibrates the reference mass body in an anti-phase with respect to the vibration of the upper mass body and the lower mass body, and comprising the upper mass body and the lower mass body At least one of the transport paths for transporting the transported object is provided, and the pair of upper portions and the pair of upper amplification springs are arranged in the transport direction, respectively, and the pair of lower portions and the pair of lower sides Amplifying springs are arranged in the transport direction. The reference mass body, the pair of upper portions, the pair of upper amplification springs, and the upper mass body are sequentially connected, and the reference mass body, the pair of lower portions, and the pair of lower amplification springs, The lower mass bodies are sequentially connected, and a connection position of the pair of upper amplification springs and the upper mass body is located below a connection position of the pair of upper portions and the pair of upper amplification springs. A connection position between the lower amplification spring and the lower mass body is located above a connection position between the pair of lower portions and the pair of lower amplification springs .

この発明によれば、前記一対の上側増幅ばねと前記上側質量体の接続位置は、前記一対の上側部分と前記一対の上側増幅ばねの接続位置より下方に位置し、前記一対の下側増幅ばねと前記下側質量体の接続位置は、前記一対の下側部分と前記一対の下側増幅ばねの接続位置より上方に位置する。これにより、前記一対の上側部分と前記一対の上側増幅ばねがそれぞれ上下方向に配列されるとともに、前記一対の下側部分と前記一対の下側増幅ばねがそれぞれ上下方向に配列される場合に比べて、前記一対の上側増幅ばねと前記一対の下側増幅ばねとの上下方向の長さを確保しつつ、装置全体の高さを低減できる。
According to this invention, the connection position of the pair of upper amplification springs and the upper mass body is located below the connection position of the pair of upper portions and the pair of upper amplification springs, and the pair of lower amplification springs And the connection position of the lower mass body is located above the connection position of the pair of lower portions and the pair of lower amplification springs. Accordingly, the pair of upper portions and the pair of upper amplification springs are respectively arranged in the vertical direction, and the pair of lower portions and the pair of lower amplification springs are respectively arranged in the vertical direction. Thus, it is possible to reduce the overall height of the device while ensuring the vertical length of the pair of upper amplification springs and the pair of lower amplification springs.

本発明において、前記基準質量体の上側に前記一対の上側部分と前記一対の上側増幅ばねと前記上側質量体が配置され、前記基準質量体の下側に前記一対の下側部分と前記一対の下側増幅ばねと前記下側質量体が配置されることが好ましい。この発明によれば、前記上側質量体の加振機構と前記下側質量体の加振機構とが基準質量体を挟んで上下に分離されるので、前記一対の上側部分と前記一対の上側増幅ばねと前記上側質量体の接続構造と、前記一対の下側部分と前記一対の下側増幅ばねと前記下側質量体の接続構造とをそれぞれ複雑にすることなく、単純化できる。   In the present invention, the pair of upper portions, the pair of upper amplification springs, and the upper mass body are disposed above the reference mass body, and the pair of lower portions and the pair of pairs are disposed below the reference mass body. Preferably, a lower amplification spring and the lower mass body are arranged. According to this invention, since the vibration mechanism of the upper mass body and the vibration mechanism of the lower mass body are separated vertically with the reference mass body interposed therebetween, the pair of upper portions and the pair of upper amplification The connection structure of the spring and the upper mass body and the connection structure of the pair of lower portions, the pair of lower amplification springs, and the lower mass body can be simplified without making them complicated.

本発明において、前記基準質量体と前記一対の上側部分、及び、前記一対の上側部分と前記一対の上側増幅ばね、前記一対の上側増幅ばねと前記上側質量体、前記基準質量体と前記一対の下側部分、前記一対の下側部分と前記一対の下側増幅ばね、前記一対の下側増幅ばねと前記下側質量体は、それぞれ搬送方向に対して直交する幅方向の中央を対称軸として幅方向に対称に接続されることが好ましい。この発明によれば、搬送方向に対して直交する幅方向の中央を対称軸として幅方向に対称に各部材が接続されるので、前記一対の上側部分と前記一対の上側増幅ばねと前記一対の下側部分と前記一対の下側増幅ばねとがそれぞれねじれる方向に振動することを抑制できる。   In the present invention, the reference mass body and the pair of upper portions, the pair of upper portions and the pair of upper amplification springs, the pair of upper amplification springs and the upper mass body, the reference mass bodies and the pair of The lower portion, the pair of lower portions and the pair of lower amplification springs, and the pair of lower amplification springs and the lower mass body, each having a center in the width direction orthogonal to the transport direction as an axis of symmetry It is preferable to connect symmetrically in the width direction. According to this invention, since each member is connected symmetrically in the width direction with the center in the width direction orthogonal to the transport direction as the axis of symmetry, the pair of upper portions, the pair of upper amplification springs, and the pair of pairs It is possible to prevent the lower portion and the pair of lower amplification springs from vibrating in the twisting direction.

本発明において、前記加振装置は、前記一対の上側部分の少なくとも一方を構成する上側圧電駆動部と、前記一対の下側部分の少なくとも一方を構成する下側圧電駆動部とを有することが好ましい。この場合において、前記一対の上側部分の両方が圧電駆動部で構成されていることが望ましい。また、前記一対の下側部分の両方が圧電駆動部で構成されていることが望ましい。   In the present invention, it is preferable that the excitation device includes an upper piezoelectric drive unit that constitutes at least one of the pair of upper parts, and a lower piezoelectric drive unit that constitutes at least one of the pair of lower parts. . In this case, it is desirable that both of the pair of upper portions are constituted by piezoelectric driving units. Moreover, it is desirable that both of the pair of lower portions are constituted by piezoelectric driving units.

本発明において、前記加振装置は、前記上側圧電駆動部と前記下側圧電駆動部とが一体形成されており、前記上側圧電駆動部と前記下側圧電駆動部の間の中間部が前記基準質量体に接続されており、板面が前記搬送方向に向いた板状であり、全体として一体に撓み変形するように構成された圧電駆動体を有することが好ましい。   In the present invention, in the vibration exciter, the upper piezoelectric drive unit and the lower piezoelectric drive unit are integrally formed, and an intermediate portion between the upper piezoelectric drive unit and the lower piezoelectric drive unit is the reference. It is preferable to have a piezoelectric driving body that is connected to the mass body, has a plate-like surface facing the transport direction, and is configured to bend and deform as a whole.

この発明によれば、一体形成された圧電駆動体のうち前記上側圧電駆動部が前記上側質量体を加振し、前記下側圧電駆動部が前記下側質量体を加振するので、前記上側質量体と前記下側質量体とを容易かつ確実に同位相で振動させることができる。また、一体の圧電駆動体で前記上側質量体と前記下側質量体を加振できるため、装置全体の高さを低減でき、装置をコンパクトに構成できる。ここで、前記搬送方向の前後位置の双方で前記上側部分と前記下側部分が上記圧電駆動体で構成されていることが望ましい。この場合には、前記搬送方向の前後位置の上記圧電駆動体は相互に同位相で駆動される。   According to this invention, among the integrally formed piezoelectric driving bodies, the upper piezoelectric driving section vibrates the upper mass body, and the lower piezoelectric driving section vibrates the lower mass body. The mass body and the lower mass body can be vibrated easily and reliably in the same phase. Further, since the upper mass body and the lower mass body can be vibrated with an integral piezoelectric driving body, the overall height of the apparatus can be reduced, and the apparatus can be configured compactly. Here, it is desirable that the upper part and the lower part are constituted by the piezoelectric driving body at both the front and rear positions in the transport direction. In this case, the piezoelectric driving bodies at the front and rear positions in the transport direction are driven in phase with each other.

本発明において、前記搬送路は前記上側質量体に設けられることが好ましい。この発明によれば、前記搬送路が前記上側質量体に設けられるので、搬送物の取り扱いが容易になる。なお、前記搬送路が前記下側質量体に設けられてもよいし、前記上側質量体と前記下側質量体の両方に設けられてもよいし、前記基準質量体に設けられていてもよい。   In this invention, it is preferable that the said conveyance path is provided in the said upper mass body. According to this invention, since the said conveyance path is provided in the said upper mass body, handling of a conveyed product becomes easy. In addition, the said conveyance path may be provided in the said lower mass body, may be provided in both the said upper mass body and the said lower mass body, and may be provided in the said reference | standard mass body. .

以上、説明したように本発明によれば、上側増幅ばねと下側増幅ばねの長さを確報しつつ、装置全体の高さの低減できるという優れた効果を奏し得る。   As described above, according to the present invention, it is possible to obtain an excellent effect that the height of the entire apparatus can be reduced while confirming the lengths of the upper and lower amplification springs.

本発明に係る実施形態の振動式搬送装置の左側面図である。It is a left view of the vibration type conveying apparatus of embodiment which concerns on this invention. 本実施形態の圧電駆動体の正面図である。It is a front view of the piezoelectric drive body of this embodiment. 本実施形態の上側増幅ばねの正面図(a)と下側増幅ばねの正面図(b)である。It is the front view (a) of the upper side amplification spring of this embodiment, and the front view (b) of the lower side amplification spring. 本実施形態の圧電駆動体と上側増幅ばねと下側増幅ばねとの分解斜視図である。It is a disassembled perspective view of the piezoelectric drive body of this embodiment, an upper side amplification spring, and a lower side amplification spring. 本実施形態の圧電駆動体と上側増幅ばねと下側増幅ばねとの接続状態を示す斜視図である。It is a perspective view which shows the connection state of the piezoelectric drive body of this embodiment, an upper side amplification spring, and a lower side amplification spring. 本実施形態の振動式搬送装置と、従来の振動式搬送装置との共振周波数を対比したグラフである。It is the graph which contrasted the resonant frequency of the vibration type conveying apparatus of this embodiment, and the conventional vibration type conveying apparatus. 従来の振動式搬送装置の一部分解斜視図である。It is a partial exploded perspective view of the conventional vibration type conveying apparatus.

以下、本発明に係る実施形態の振動式搬送装置について詳細に説明する。図1は本発明に係る実施形態の振動式搬送装置の左側面図である。図1において、矢印Uで示す方向を上側とし(紙面の上側)、矢印Dで示す方向を下側とし(紙面の下側)、矢印Fで示す方向を前側とし(紙面に対して向かって左側)、矢印Bで示す方向を後側とする(紙面に対して向かって右側)。これら上側と下側と前側と後側は相対的な位置関係を示すものであり、重力方向に対する絶対的な位置関係を示すものではない。   Hereinafter, the vibration type conveying apparatus according to the embodiment of the present invention will be described in detail. FIG. 1 is a left side view of a vibration type conveying apparatus according to an embodiment of the present invention. In FIG. 1, the direction indicated by the arrow U is the upper side (upper side of the paper), the direction indicated by the arrow D is the lower side (lower side of the paper), and the direction indicated by the arrow F is the front side (left side of the page). ), The direction indicated by the arrow B is the rear side (right side of the page). The upper side, the lower side, the front side, and the rear side indicate relative positional relationships, and do not indicate an absolute positional relationship with respect to the direction of gravity.

図1に示すように、本実施形態の振動式搬送装置10は、基準質量体11と、この基準質量体11の上側に配置される上側質量体12Aと、基準質量体11の下側に配置される下側質量体12Bとを有する。つまり、上側質量体12Aと下側質量体12Bが基準質量体11の上下両側に配置されており、これら上側質量体12Aと基準質量体11と下側質量体12Bとが上側から下側に向かって上下方向に順次配置されている。これにより、基準質量体11の重心位置と、上側質量体12A及び下側質量体12Bの合計の重心位置と、の上下方向のずれを容易に低減できる。なお、基準質量体11の重心位置と、上側質量体12A及び下側質量体12Bを合わせた重心位置と、が一致するように設計することが好ましい。   As shown in FIG. 1, the vibratory transfer device 10 according to the present embodiment includes a reference mass body 11, an upper mass body 12 </ b> A disposed on the upper side of the reference mass body 11, and a lower side of the reference mass body 11. Lower mass body 12B. That is, the upper mass body 12A and the lower mass body 12B are arranged on both upper and lower sides of the reference mass body 11, and the upper mass body 12A, the reference mass body 11 and the lower mass body 12B are directed from the upper side to the lower side. Are arranged sequentially in the vertical direction. Thereby, the vertical shift | offset | difference of the gravity center position of the reference | standard mass body 11 and the total gravity center position of 12 A of upper mass bodies and the lower mass body 12B can be reduced easily. In addition, it is preferable to design so that the gravity center position of the reference | standard mass body 11 and the gravity center position which combined 12 A of upper mass bodies, and the lower mass body 12B may correspond.

基準質量体11は中央に配置された膨張部11xと、膨張部11xの前後両側に設けられた連結部11a,11bとを有する。膨張部11xは上下方向に幅広に形成されている。連結部11a,11bは膨張部11xより上下方向に幅狭に形成されており、膨張部11xの上下方向中央部から前側と後側とにそれぞれ突出している。基準質量体11の重心位置は、前後位置にある連結部11a,11bを結ぶ直線上に配置されるように設計することが望ましい。   The reference mass body 11 has an inflating portion 11x disposed in the center, and connecting portions 11a and 11b provided on both front and rear sides of the inflating portion 11x. The expansion part 11x is formed wide in the vertical direction. The connecting portions 11a and 11b are formed narrower in the vertical direction than the inflating portion 11x, and project from the center in the up-down direction of the inflating portion 11x to the front side and the rear side, respectively. The center of gravity of the reference mass body 11 is preferably designed so as to be arranged on a straight line connecting the connecting portions 11a and 11b at the front and rear positions.

上側質量体12Aの下側部分は側面から見てU字状に形成されており、中央部が上側に凹んでいる。下側質量体12Bは側面から見てU字状に形成されており、中央部が下側に凹んでいる。上側質量体12Aと基準質量体11と下側質量体12Bとが上下方向に配列された状態では、上側質量体12Aの凹部の中に基準質量体11における膨張部11xの上側部分が収容され、下側質量体12Bの凹部の中に基準質量体11における膨張部11xの下側部分が収容される。これにより、装置全体の高さが低減される。   The lower portion of the upper mass body 12A is formed in a U shape when viewed from the side, and the center portion is recessed upward. The lower mass body 12B is formed in a U-shape when viewed from the side, and the central portion is recessed downward. In the state where the upper mass body 12A, the reference mass body 11 and the lower mass body 12B are arranged in the vertical direction, the upper portion of the expansion portion 11x of the reference mass body 11 is accommodated in the concave portion of the upper mass body 12A. The lower portion of the expansion portion 11x of the reference mass body 11 is accommodated in the concave portion of the lower mass body 12B. Thereby, the height of the whole apparatus is reduced.

上側質量体12Aの上側部分には搬送体20が設けられている。この搬送体20は前後方向に伸びる図示しない搬送路が形成されており、この搬送路に沿って電子部品等の搬送物を後側から前側へ搬送するように構成されている。これにより、搬送物の取り扱いや搬送態様の調整を容易にできる。この場合、上側質量体12Aは搬送体20を含めた質量を有する慣性体として作用する。振動式搬送装置10は矢印Fと矢印Bの両方で示す前後方向が矢印Pで示す搬送方向となっている。   A transport body 20 is provided on the upper portion of the upper mass body 12A. The transport body 20 is formed with a transport path (not shown) extending in the front-rear direction, and is configured to transport a transported object such as an electronic component from the rear side to the front side along the transport path. Thereby, handling of a conveyed product and adjustment of a conveyance mode can be made easy. In this case, the upper mass body 12A acts as an inertial body having a mass including the transport body 20. In the vibratory conveyance device 10, the front-rear direction indicated by both arrows F and B is the conveyance direction indicated by arrow P.

図2は本実施形態の圧電駆動体の正面図である。図2に示すように、振動式搬送装置10には加振装置として圧電駆動体13a,13bが設けられている。この圧電駆動体13a,13bは、一方向に伸びる略矩形状であり、長手方向が上下方向となるように振動式搬送装置10の前側と後側とにそれぞれ配置されている。この圧電駆動体13a,13bはシム板と呼ばれる金属製の弾性基板13Sと、この弾性基板13Sの表裏両面に貼付(積層)された圧電体(圧電層)13Pとを有する。つまり、この圧電駆動体13a,13bは2枚の圧電素子を張り合わせてなるバイモルフ(bimolf)である。圧電体13Pは弾性基板13Sの長手方向中央(上下方向中央)に配置されている。圧電体13Pの幅方向両側に弾性基板13Sの一部が張り出しており、この張り出し部分に貫通孔13hc,13hcがそれぞれ形成されている。換言すると、圧電駆動体13a,13bの長手方向中央には2つの貫通孔13hc,13hcが圧電体13Pを挟んで形成されている。これにより、圧電体13Pを避けて、基準質量体11やスペーサ17a,17bを圧電駆動体13a,13bに接続できる。   FIG. 2 is a front view of the piezoelectric driving body of the present embodiment. As shown in FIG. 2, the vibratory transfer device 10 is provided with piezoelectric drive bodies 13a and 13b as vibration devices. The piezoelectric driving bodies 13a and 13b have a substantially rectangular shape extending in one direction, and are arranged on the front side and the rear side of the vibration type conveying device 10 so that the longitudinal direction is the vertical direction. The piezoelectric driving bodies 13a and 13b include a metal elastic substrate 13S called a shim plate, and a piezoelectric body (piezoelectric layer) 13P attached (laminated) on both front and back surfaces of the elastic substrate 13S. That is, the piezoelectric drivers 13a and 13b are bimorphs formed by bonding two piezoelectric elements. The piezoelectric body 13P is disposed at the center in the longitudinal direction (vertical center) of the elastic substrate 13S. A part of the elastic substrate 13S protrudes on both sides in the width direction of the piezoelectric body 13P, and through holes 13hc and 13hc are formed in the protruding portions, respectively. In other words, two through holes 13hc and 13hc are formed at the center in the longitudinal direction of the piezoelectric driving bodies 13a and 13b with the piezoelectric body 13P interposed therebetween. Accordingly, the reference mass body 11 and the spacers 17a and 17b can be connected to the piezoelectric driving bodies 13a and 13b while avoiding the piezoelectric body 13P.

また、圧電駆動体13a,13bの長手方向の両端部、つまり上端部と下端部はそれぞれ圧電駆動体13a,13bの長手方向に対して直交する幅方向両側に張り出しており、これら上端部と下端部とにはそれぞれ3つの貫通孔13hu,13hu,13hu(13hd,13hd,13hd)が形成されている。これら3つの貫通孔は圧電駆動体13a,13bの幅方向に互いに所定間隔を開けて一列に配列されている。これら3つの貫通孔のうち、真ん中の貫通孔13hu(13hd)は圧電駆動体13a,13bの幅方向中央に位置し、両側の貫通孔13hu,13hu(13hd,13hd)は幅方向両側の張り出し部にそれぞれ位置する。なお、これら貫通孔13hu,13hc,13hdは全て平面視円形の丸孔である。   Further, both ends in the longitudinal direction of the piezoelectric driving bodies 13a and 13b, that is, the upper end and the lower end are projected on both sides in the width direction orthogonal to the longitudinal direction of the piezoelectric driving bodies 13a and 13b, respectively. Three through-holes 13hu, 13hu, 13hu (13hd, 13hd, 13hd) are formed in each part. These three through holes are arranged in a line at predetermined intervals in the width direction of the piezoelectric driving bodies 13a and 13b. Among these three through-holes, the middle through-hole 13hu (13hd) is located at the center in the width direction of the piezoelectric driving bodies 13a and 13b, and the through-holes 13hu and 13hu (13hd and 13hd) on both sides are the protruding portions on both sides in the width direction. Located in each. The through holes 13hu, 13hc, and 13hd are all round holes that are circular in plan view.

この圧電駆動体13a,13bは上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdとを有する。上側圧電駆動部13au,13buは圧電駆動体13a,13bの長手方向中央(上下方向中央)から上側の部分であり、下側圧電駆動部13ad,13bdは圧電駆動体13a,13bの長手方向中央(上下方向中央)から下側の部分である。これら上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdは上記上側部分と上記下側部分にそれぞれ相当する。本実施形態では上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdが一体形成されている。これにより、上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdとが均一かつ一体に撓み変形するようになっている。   The piezoelectric driving bodies 13a and 13b have upper piezoelectric driving portions 13au and 13bu and lower piezoelectric driving portions 13ad and 13bd. The upper piezoelectric drive parts 13au and 13bu are the upper part from the longitudinal center (vertical center) of the piezoelectric drive bodies 13a and 13b, and the lower piezoelectric drive parts 13ad and 13bd are the longitudinal center of the piezoelectric drive bodies 13a and 13b. This is the lower part from the center in the vertical direction. The upper piezoelectric drive units 13au and 13bu and the lower piezoelectric drive units 13ad and 13bd correspond to the upper part and the lower part, respectively. In the present embodiment, the upper piezoelectric driving units 13au and 13bu and the lower piezoelectric driving units 13ad and 13bd are integrally formed. As a result, the upper piezoelectric drive units 13au and 13bu and the lower piezoelectric drive units 13ad and 13bd are bent and deformed uniformly and integrally.

上記圧電駆動体13a,13bは、圧電体13Pに電圧を印加すると、電圧に応じて圧電体13Pが変形し、これによって弾性基板13Sは長さ方向(上下方向)に撓むように構成される。このため、所定周波数の交番電圧を印加することにより、圧電駆動体13a,13bは、交互に逆方向に撓み変形することで振動する。この振動は、後述する上側増幅ばね14a,14bや下側増幅ばね15a,15bを介して基準質量体11を基準として上側質量体12Aと下側質量体12Bに搬送方向にほぼ沿った振動を生じさせる。   The piezoelectric drive bodies 13a and 13b are configured such that when a voltage is applied to the piezoelectric body 13P, the piezoelectric body 13P is deformed in accordance with the voltage, whereby the elastic substrate 13S is bent in the length direction (vertical direction). For this reason, by applying an alternating voltage of a predetermined frequency, the piezoelectric driving bodies 13a and 13b vibrate by alternately bending and deforming in opposite directions. This vibration generates vibrations substantially along the conveying direction in the upper mass body 12A and the lower mass body 12B with reference to the reference mass body 11 via upper amplification springs 14a and 14b and lower amplification springs 15a and 15b described later. Let

このとき、搬送方向の前後位置に取り付けられた圧電駆動体13a,13bは共に振動方向に同位相で撓み変形し、それぞれの上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdも搬送方向に同位相で変形する。このため、基準質量体11に対して上側質量体12Aと下側質量体12Bも搬送方向に同位相で振動する。このとき、基準質量体11は、上側質量体12A及び下側質量体12Bとは逆位相で振動して、上側質量体12Aと下側質量体12Bの振動による反力を打ち消すようになっている。   At this time, the piezoelectric driving bodies 13a and 13b attached at the front and rear positions in the conveying direction are both bent and deformed in the same phase in the vibration direction, and the upper piezoelectric driving portions 13au and 13bu and the lower piezoelectric driving portions 13ad and 13bd are also conveyed. Deforms in the same phase in the direction. For this reason, the upper mass body 12A and the lower mass body 12B also vibrate in the same direction in the transport direction with respect to the reference mass body 11. At this time, the reference mass body 11 vibrates in an opposite phase to the upper mass body 12A and the lower mass body 12B, and cancels the reaction force caused by the vibration of the upper mass body 12A and the lower mass body 12B. .

ここで、この圧電駆動体13a,13bは、長手方向中央を対象軸として長手方向に対称に形成されているとともに、幅方向中央を対称軸として幅方向にも対称に形成されている。これにより、上側質量体12Aと下側質量体12Bの双方に対して均等な同位相の加振力を与えることができる。   Here, the piezoelectric driving bodies 13a and 13b are formed symmetrically in the longitudinal direction with the center in the longitudinal direction as the target axis, and are also symmetrically formed in the width direction with the center in the width direction as the symmetrical axis. Thereby, an equal in-phase excitation force can be applied to both the upper mass body 12A and the lower mass body 12B.

図3(a)は本実施形態の上側増幅ばねの正面図である。図3(b)は本実施形態の下側増幅ばねの正面図である。振動式搬送装置10の前側と後側とには上記圧電駆動体13a,13bの振動を増幅する上側増幅ばね14a,14bと下側増幅ばね15a,15bとがそれぞれ設けられている。図3(a)と図3(b)に示すように、上側増幅ばね14a,14bと下側増幅ばね15a,15bとはそれぞれ正面から見て略矩形状である。上側増幅ばね14a,14bと下側増幅ばね15a,15bとの幅方向(左右方向)の長さは同一又は略同一であり、上側増幅ばね14a,14bと下側増幅ばね15a,15bとの幅方向に対して直交する上下方向の長さは同一又は略同一である。   Fig.3 (a) is a front view of the upper side amplification spring of this embodiment. FIG. 3B is a front view of the lower amplification spring of this embodiment. Upper and lower amplification springs 14a and 14b and lower amplification springs 15a and 15b for amplifying vibrations of the piezoelectric driving bodies 13a and 13b are provided on the front side and the rear side of the vibration transfer device 10, respectively. As shown in FIGS. 3A and 3B, the upper amplification springs 14a and 14b and the lower amplification springs 15a and 15b are substantially rectangular when viewed from the front. The lengths in the width direction (left-right direction) of the upper amplification springs 14a, 14b and the lower amplification springs 15a, 15b are the same or substantially the same, and the widths of the upper amplification springs 14a, 14b and the lower amplification springs 15a, 15b. The lengths in the vertical direction perpendicular to the direction are the same or substantially the same.

この上側増幅ばね14a,14bの下端部と、下側増幅ばね15a,15bの上端部とには、幅方向中央に凹部14as,14bs(15as,15bs)がそれぞれ形成されている。これら凹部は基準質量体11の連結部11a,11bを避けるためのものである。上側増幅ばね14a,14bと下側増幅ばね15a,15bは上下方向に所定間隔を開けて上下にそれぞれ配置されている。このとき、上側増幅ばね14a,14bの凹部14as,14bsと、下側増幅ばね15a,15bの凹部15as,15bsとは上下方向に対向している。   Concave portions 14as and 14bs (15as and 15bs) are formed at the center in the width direction at the lower ends of the upper amplification springs 14a and 14b and the upper ends of the lower amplification springs 15a and 15b, respectively. These concave portions are for avoiding the connecting portions 11 a and 11 b of the reference mass body 11. The upper amplifying springs 14a and 14b and the lower amplifying springs 15a and 15b are vertically arranged with a predetermined interval therebetween. At this time, the recesses 14as and 14bs of the upper amplification springs 14a and 14b and the recesses 15as and 15bs of the lower amplification springs 15a and 15b face each other in the vertical direction.

図3(a)に示すように、上側増幅ばね14a,14bの上端部には3つの貫通孔14hu,14hu,14huが形成されており、これら3つの貫通孔は互いに所定間隔を開けて幅方向に一列に配列されている。このうち、真ん中の貫通孔14huは幅方向中央に位置し、両側の貫通孔14hu,14huは幅方向両側にそれぞれ位置する。また、上側増幅ばね14a,14bの下端部には2つの貫通孔14hd,14hdが形成されており、これら2つの貫通孔は上記凹部14as,14bsを挟むように幅方向両側にそれぞれ位置する。上側増幅ばね14a,14bの上端部と下端部とにある貫通孔は全て平面視円形の丸孔である。   As shown in FIG. 3 (a), three through holes 14hu, 14hu, 14hu are formed at the upper ends of the upper amplification springs 14a, 14b. These three through holes are spaced apart from each other in the width direction. Are arranged in a row. Among these, the middle through-hole 14hu is located in the center in the width direction, and the through-holes 14hu, 14hu on both sides are located on both sides in the width direction. In addition, two through holes 14hd and 14hd are formed at the lower ends of the upper amplification springs 14a and 14b, and these two through holes are located on both sides in the width direction so as to sandwich the recesses 14as and 14bs, respectively. The through holes in the upper and lower ends of the upper amplifying springs 14a and 14b are all round holes that are circular in plan view.

同様に、図3(b)に示すように、下側増幅ばね15a,15bの下端部には3つの貫通孔15hd,15hd,15hdが形成されており、これら3つの貫通孔は互いに所定間隔を開けて幅方向に一列に配列されている。このうち、真ん中の貫通孔15hdは幅方向中央に位置し、両側の貫通孔15hd,15hdは幅方向両側にそれぞれ位置する。また、下側増幅ばね15a,15bの上端部には2つの貫通孔15hu,15huが形成されており、これら2つの貫通孔は上記凹部15as,15bsを挟むように幅方向両側にそれぞれ位置する。下側増幅ばね15a,15bの下端部と上端部とにある貫通孔は全て平面視円形の丸孔である。このため、これら上側増幅ばね14a,14bと下側増幅ばね15a,15bは、それぞれ幅方向中央を対称軸として幅方向に対称に形成されている。   Similarly, as shown in FIG. 3B, three through holes 15hd, 15hd, and 15hd are formed at the lower ends of the lower amplification springs 15a and 15b, and these three through holes are spaced from each other at a predetermined interval. Open and arranged in a row in the width direction. Among these, the middle through hole 15hd is located in the center in the width direction, and the through holes 15hd and 15hd on both sides are located on both sides in the width direction, respectively. Further, two through holes 15hu and 15hu are formed at the upper ends of the lower amplification springs 15a and 15b, and these two through holes are located on both sides in the width direction so as to sandwich the recesses 15as and 15bs, respectively. The through holes in the lower end and the upper end of the lower amplification springs 15a and 15b are all circular holes in a plan view. Therefore, the upper amplification springs 14a and 14b and the lower amplification springs 15a and 15b are formed symmetrically in the width direction with the center in the width direction as an axis of symmetry.

図1に示すように、上記基準質量体11は前側と後側とに防振ばね16a,16bがそれぞれ接続されており、これら防振ばね16a,16bの下端部は基台19に接続されている。この基台19は設置面上に配置されている。これにより、基準質量体11は前側と後側とで防振ばね16a,16bによって下方から支持されている。   As shown in FIG. 1, the reference mass body 11 has anti-vibration springs 16a and 16b connected to the front side and the rear side, respectively, and the lower ends of the anti-vibration springs 16a and 16b are connected to a base 19. Yes. The base 19 is disposed on the installation surface. Thereby, the reference mass body 11 is supported from below by the vibration-proof springs 16a and 16b on the front side and the rear side.

また、基準質量体11と上側質量体12Aは前側と後側とで上側圧電駆動部13au,13buと上側増幅ばね14a,14bとを介して接続されている。このため、上側質量体12Aは前側と後側とで上側圧電駆動部13au,13buと上側増幅ばね14a,14bとによって下方から支持されている。   Further, the reference mass body 11 and the upper mass body 12A are connected to the front side and the rear side via the upper piezoelectric drive units 13au and 13bu and the upper amplification springs 14a and 14b. Therefore, the upper mass body 12A is supported from below by the upper piezoelectric driving portions 13au and 13bu and the upper amplification springs 14a and 14b on the front side and the rear side.

さらに、基準質量体11と下側質量体12Bは前側と後側とで下側圧電駆動部13ad,13bdと下側増幅ばね15a,15bとを介して接続されている。このため、下側質量体12Bは前側と後側とで下側圧電駆動部13ad,13bdと下側増幅ばね15a,15bとによって上方から吊り下げられている。   Further, the reference mass body 11 and the lower mass body 12B are connected to the front side and the rear side via the lower piezoelectric drive portions 13ad and 13bd and the lower amplification springs 15a and 15b. Therefore, the lower mass body 12B is suspended from above by the lower piezoelectric driving portions 13ad, 13bd and the lower amplification springs 15a, 15b on the front side and the rear side.

ここで、上記上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdとは板状であり、上記上側増幅ばね14a,14bと下側増幅ばね15a,15bと防振ばね16a,16aとは板ばねである。これら上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdと上側増幅ばね14a,14bと下側増幅ばね15a,15bと防振ばね16a,16bとは全て板面が撓み変形可能に構成されているとともに、全て板面が前後方向(搬送方向)に向いている。このため、これら上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdと上側増幅ばね14a,14bと下側増幅ばね15a,15bと防振ばね16a,16bとは全て搬送方向に撓み変形可能に構成されている。   Here, the upper piezoelectric drive units 13au and 13bu and the lower piezoelectric drive units 13ad and 13bd are plate-shaped, and the upper amplification springs 14a and 14b, the lower amplification springs 15a and 15b, and the vibration isolation springs 16a and 16a. Is a leaf spring. These upper piezoelectric drive units 13au and 13bu, lower piezoelectric drive units 13ad and 13bd, upper amplification springs 14a and 14b, lower amplification springs 15a and 15b, and vibration-proof springs 16a and 16b are all configured so that their plate surfaces can be bent and deformed. In addition, all the plate surfaces are directed in the front-rear direction (conveyance direction). For this reason, the upper piezoelectric drive portions 13au and 13bu, the lower piezoelectric drive portions 13ad and 13bd, the upper amplification springs 14a and 14b, the lower amplification springs 15a and 15b, and the vibration-proof springs 16a and 16b are all bent and deformed in the conveyance direction. It is configured to be possible.

図1に示すように、ボルトや座金やスペーサ等の連結部材が圧電駆動体13a,13bの長手方向中央(上下方向中央)の貫通孔13hc,13hcに挿通されてから基準質量体11の連結部11a,11bにねじ込まれている。このため、基準質量体11の連結部11a,11bと圧電駆動体13a,13bとがそれぞれ接続されている。言い換えると、圧電駆動体13a,13bの長手方向中央には、前後方向内側に基準質量体11が接続されている。この状態において、上側圧電駆動部13au,13buは基準質量体11から上方へ伸びており、下側圧電駆動部13ad,13bdは基準質量体11から下方へ伸びている。   As shown in FIG. 1, after connecting members such as bolts, washers and spacers are inserted through the through holes 13hc and 13hc in the longitudinal center (vertical center) of the piezoelectric driving bodies 13a and 13b, the connecting portion of the reference mass body 11 is inserted. It is screwed into 11a and 11b. Therefore, the connecting portions 11a and 11b of the reference mass body 11 and the piezoelectric driving bodies 13a and 13b are connected to each other. In other words, the reference mass body 11 is connected to the inner side in the front-rear direction at the longitudinal center of the piezoelectric driving bodies 13a, 13b. In this state, the upper piezoelectric drive parts 13au and 13bu extend upward from the reference mass body 11, and the lower piezoelectric drive parts 13ad and 13bd extend downward from the reference mass body 11.

これに対して、圧電駆動体13a,13bの長手方向中央(上下方向中央)には前後方向外側(搬送方向外側)にスペーサ17a,17bが接続されている。これらスペーサ17a,17bの前後方向外側に、つまり、これらスペーサ17a,17bの基準質量体11に対して反対側の端部に、防振ばね16a,16bがそれぞれ接続されている。これら防振ばね16a,16bはスペーサ17a,17bと基台19とを接続している。したがって、これら防振ばね16a,16bは圧電駆動体13a,13bよりも搬送方向外側に配置されている。このため、振動式搬送装置10の主要振動系全体の安定性が向上する。   On the other hand, spacers 17a, 17b are connected to the longitudinal direction center (vertical direction center) of the piezoelectric driving bodies 13a, 13b on the outer side in the front-rear direction (outward in the transport direction). Anti-vibration springs 16a and 16b are connected to the outer sides of the spacers 17a and 17b in the front-rear direction, that is, to the ends of the spacers 17a and 17b opposite to the reference mass body 11, respectively. These anti-vibration springs 16 a and 16 b connect the spacers 17 a and 17 b to the base 19. Therefore, these vibration-proof springs 16a and 16b are arranged on the outer side in the transport direction than the piezoelectric drivers 13a and 13b. For this reason, the stability of the whole main vibration system of the vibration type conveying apparatus 10 is improved.

図4は本実施形態の圧電駆動体と上側増幅ばねと下側増幅ばねとの分解斜視図である。図5は本実施形態の圧電駆動体と上側増幅ばねと下側増幅ばねとの接続状態を示す斜視図である。図4と図5に示すように、圧電駆動体13a,13bの上端部にある貫通孔13hu,13hu,13huと、上側増幅ばね14a,14bの上端部にある貫通孔14hu,14hu,14huとに図示しない連結部材が挿通されて締結されており、圧電駆動体13a,13bの上端部と上側増幅ばね14a,14bの上端部とが接続している。すなわち、上側圧電駆動部13au,13buの上端部と上側増幅ばね14a,14bの上端部とが接続している。   FIG. 4 is an exploded perspective view of the piezoelectric driving body, the upper amplification spring, and the lower amplification spring of this embodiment. FIG. 5 is a perspective view showing a connection state of the piezoelectric driving body, the upper amplification spring, and the lower amplification spring of the present embodiment. As shown in FIGS. 4 and 5, the through holes 13hu, 13hu, 13hu at the upper ends of the piezoelectric drivers 13a, 13b and the through holes 14hu, 14hu, 14hu at the upper ends of the upper amplification springs 14a, 14b are formed. A connecting member (not shown) is inserted and fastened, and the upper ends of the piezoelectric drivers 13a and 13b are connected to the upper ends of the upper amplification springs 14a and 14b. That is, the upper end portions of the upper piezoelectric drive portions 13au and 13bu and the upper end portions of the upper amplification springs 14a and 14b are connected.

この上側増幅ばね14a,14bの下端部にある貫通孔14hd,14hdには図示しない連結部材が挿通されて、上側質量体12Aの前側と後側とにねじ込まれており、上側増幅ばね14a,14bの下端部と上側質量体12Aとが搬送方向の前後位置で接続されている。このため、基準質量体11と上側圧電駆動部13au,13buと上側増幅ばね14a,14bと上側質量体12Aとが順次接続されている。   A connecting member (not shown) is inserted into the through holes 14hd and 14hd at the lower ends of the upper amplification springs 14a and 14b and screwed into the front side and the rear side of the upper mass body 12A, and the upper amplification springs 14a and 14b. Are connected at the front and rear positions in the transport direction. For this reason, the reference mass body 11, the upper piezoelectric driving portions 13au and 13bu, the upper amplification springs 14a and 14b, and the upper mass body 12A are sequentially connected.

同様に、圧電駆動体13a,13bの下端部にある貫通孔13hd,13hd,13hdと、下側増幅ばね15a,15bの下端部にある貫通孔15hd,15hd,15hdとに図示しない連結部材が挿通されて締結されており、圧電駆動体13a,13bの下端部と下側増幅ばね15a,15bの下端部とが接続している。すなわち、下側圧電駆動部13ad,13bdの下端部と下側増幅ばね15a,15bの下端部とが接続している。   Similarly, connecting members (not shown) are inserted into the through holes 13hd, 13hd, 13hd at the lower ends of the piezoelectric driving bodies 13a, 13b and the through holes 15hd, 15hd, 15hd at the lower ends of the lower amplification springs 15a, 15b. The lower ends of the piezoelectric drivers 13a and 13b and the lower ends of the lower amplification springs 15a and 15b are connected. That is, the lower end portions of the lower piezoelectric drive portions 13ad and 13bd are connected to the lower end portions of the lower amplification springs 15a and 15b.

この下側増幅ばね15a,15bの上端部にある貫通孔15hu,15huには図示しない連結部材が挿通されて、下側質量体12Bの前側と後側とにねじ込まれており、下側増幅ばね15a,15bの上端部と下側質量体12Bとが搬送方向の前後位置で接続されている。このため、基準質量体11と下側圧電駆動部13ad,13bdと下側増幅ばね15a,15bと下側質量体12Bとが順次接続されている。   A connecting member (not shown) is inserted into the through holes 15hu and 15hu at the upper ends of the lower amplification springs 15a and 15b and screwed into the front side and the rear side of the lower mass body 12B. The upper ends of 15a and 15b and the lower mass body 12B are connected at the front and rear positions in the transport direction. For this reason, the reference mass body 11, the lower piezoelectric driving portions 13ad and 13bd, the lower amplification springs 15a and 15b, and the lower mass body 12B are sequentially connected.

この状態において、上側圧電駆動部13au,13buと上側増幅ばね14a,14b、及び、下側圧電駆動部13ad,13bdと下側増幅ばね15a,15bは、それぞれ搬送方向に積層(配置)されている。上側増幅ばね14a,14bは上側圧電駆動部13au,13bu(圧電駆動体13a,13b)の上端部から圧電駆動体13a,13bの上下方向中央の近くまで下方へ伸びている。一方、下側増幅ばね15a,15bは下側圧電駆動部13ad,13bd(圧電駆動体13a,13b)の下端部から圧電駆動体13a,13bの上下方向中央の近くまで上方へ伸びている。このため、上側増幅ばね14a,14bの下端部は上側圧電駆動部13au,13buの上端部より下方に位置し、下側増幅ばね15a,15bの上端部は下側圧電駆動部13ad,13bdの下端部より上方に位置する。つまり、上側増幅ばね14a,14bと上側質量体12Aの接続位置は上側増幅ばね14a,14bと上側圧電駆動部13au,13buの接続位置より下方に位置する。これに対して、下側増幅ばね15a,15bと下側質量体12Bの接続位置は下側増幅ばね15a,15bと下側圧電駆動部13ad,13bdの接続位置より上方に位置する。これにより、装置全体の高さを低減できる。   In this state, the upper piezoelectric drive units 13au and 13bu and the upper amplification springs 14a and 14b, and the lower piezoelectric drive units 13ad and 13bd and the lower amplification springs 15a and 15b are stacked (arranged) in the transport direction. . The upper amplifying springs 14a and 14b extend downward from the upper ends of the upper piezoelectric drivers 13au and 13bu (piezoelectric drivers 13a and 13b) to near the vertical center of the piezoelectric drivers 13a and 13b. On the other hand, the lower amplifying springs 15a and 15b extend upward from the lower ends of the lower piezoelectric driving portions 13ad and 13bd (piezoelectric driving bodies 13a and 13b) to near the center in the vertical direction of the piezoelectric driving bodies 13a and 13b. Therefore, the lower ends of the upper amplification springs 14a and 14b are positioned below the upper ends of the upper piezoelectric drive portions 13au and 13bu, and the upper ends of the lower amplification springs 15a and 15b are lower ends of the lower piezoelectric drive portions 13ad and 13bd. It is located above the part. That is, the connection position of the upper amplification springs 14a and 14b and the upper mass body 12A is located below the connection position of the upper amplification springs 14a and 14b and the upper piezoelectric drive units 13au and 13bu. On the other hand, the connection positions of the lower amplification springs 15a and 15b and the lower mass body 12B are located above the connection positions of the lower amplification springs 15a and 15b and the lower piezoelectric drive units 13ad and 13bd. Thereby, the height of the whole apparatus can be reduced.

このとき、上側増幅ばね14a,14bと下側増幅ばね15a,15bとの上下方向の長さは、それぞれ圧電駆動体13a,13bの上下方向の長さの半分より短く設定されており、これら上側増幅ばね14a,14bと下側増幅ばね15a、15bとは上下方向に離れて配置されている。上側圧電駆動部13au,13buと上側増幅ばね14a,14bが基準質量体11の上側に配置されており、下側圧電駆動部13ad,13bdと下側増幅ばね15a,15bが基準質量体11の下側に配置されている。つまり、上側質量体12Aの加振機構と下側質量体12Bの加振機構とが上下に分離している。   At this time, the vertical lengths of the upper amplification springs 14a and 14b and the lower amplification springs 15a and 15b are set to be shorter than half the vertical lengths of the piezoelectric driving bodies 13a and 13b, respectively. The amplification springs 14a and 14b and the lower amplification springs 15a and 15b are arranged apart from each other in the vertical direction. The upper piezoelectric drive parts 13au and 13bu and the upper amplification springs 14a and 14b are arranged above the reference mass body 11, and the lower piezoelectric drive parts 13ad and 13bd and the lower amplification springs 15a and 15b are below the reference mass body 11. Arranged on the side. That is, the vibration mechanism of the upper mass body 12A and the vibration mechanism of the lower mass body 12B are separated vertically.

また、圧電駆動体13a,13bの上端部と上下方向中央と下端部とにある貫通孔は、それぞれ圧電駆動体13a,13bの幅方向中央を対称軸として幅方向に対称に形成されている。同様に、上側増幅ばね14a,14bの上端部と下端部とにある貫通孔は、それぞれ上側増幅ばね14a,14bの幅方向中央を対称軸として幅方向に対称に形成されており、下側増幅ばね15a,15bの上端部と下端部とにある貫通孔は、それぞれ下側増幅ばね15a,15bの幅方向中央を対象軸として幅方向に対称に形成されている。このとき、これら圧電駆動体13a,13bと上側増幅ばね14a,14bと下側増幅ばね15a,15bは、全て板面が前後方向(搬送方向)に向いており、幅方向が搬送方向に直交する左右方向になっている。このため、基準質量体11と圧電駆動体13a,13b、及び、上側圧電駆動部13au,13bu(圧電駆動体13a,13b)と上側増幅ばね14a,14b、上側増幅ばね14a,14bと上側質量体12A、下側圧電駆動部13ad,13bd(圧電駆動体13a,13b)と下側増幅ばね15a,15b、下側増幅ばね15a,15bと下側質量体12Bは、それぞれ搬送方向に直交する左右方向に対称に接続されている。これにより、上側圧電駆動部13au,13bu(圧電駆動体13a,13b)と下側圧電駆動部13ad,bd(圧電駆動体13a,13b)と上側増幅ばね14a,14bと下側増幅ばね15a,15bとがそれぞれねじれる方向に振動することが抑制される。   Further, the through holes in the upper end portion, the vertical center and the lower end portion of the piezoelectric drive bodies 13a and 13b are formed symmetrically in the width direction with the width direction center of the piezoelectric drive bodies 13a and 13b as the symmetry axis. Similarly, the through holes in the upper end and the lower end of the upper amplification springs 14a and 14b are formed symmetrically in the width direction with the center in the width direction of the upper amplification springs 14a and 14b as symmetry axes, respectively. The through holes in the upper end and the lower end of the springs 15a and 15b are formed symmetrically in the width direction with the center in the width direction of the lower amplification springs 15a and 15b being the target axes, respectively. At this time, as for these piezoelectric drive bodies 13a and 13b, upper side amplification springs 14a and 14b, and lower side amplification springs 15a and 15b, the plate | board surface has all faced the front-back direction (conveyance direction), and the width direction is orthogonal to a conveyance direction. It is in the horizontal direction. Therefore, the reference mass body 11 and the piezoelectric driving bodies 13a and 13b, the upper piezoelectric driving portions 13au and 13bu (piezoelectric driving bodies 13a and 13b), the upper amplification springs 14a and 14b, the upper amplification springs 14a and 14b, and the upper mass body. 12A, lower piezoelectric drive portions 13ad, 13bd (piezoelectric drive bodies 13a, 13b) and lower amplification springs 15a, 15b, lower amplification springs 15a, 15b, and lower mass body 12B are respectively in the left-right direction orthogonal to the conveying direction. Are connected symmetrically. As a result, the upper piezoelectric drive parts 13au and 13bu (piezoelectric drive bodies 13a and 13b), the lower piezoelectric drive parts 13ad and bd (piezoelectric drive bodies 13a and 13b), the upper amplification springs 14a and 14b, and the lower amplification springs 15a and 15b. And vibrate in the twisting direction.

これら上側増幅ばね14a,14bと下側増幅ばね15a,15bとの幅長は、それぞれ圧電駆動体13a,13bの張り出し部がある部分(圧電駆動体13a,13bの上端部と上下方向中央部と下端部)の幅長と同一又は略同一であり、圧電駆動体13a,13bの張り出し部がない部分の幅長よりも幅広である。上側増幅ばね14a,14bの下端部にある貫通孔14hd,14hdと、下側増幅ばね15a,15bの上端部にある貫通孔15hu,15huとは、それぞれ圧電駆動体13a,13bの張り出し部がない部分の幅方向外側に配置されており、それぞれ圧電駆動体13a,13bと重ならないように圧電駆動体13a,13bの幅方向外側に露出している。これにより、上側増幅ばね14a,14bと上側質量体12A、及び、下側増幅ばね15a,15bと下側質量体12Bは、それぞれ圧電駆動体13a,13bを避けて接続できるようになっている。   The widths of the upper amplifying springs 14a and 14b and the lower amplifying springs 15a and 15b are respectively determined by the portions where the piezoelectric driving bodies 13a and 13b are overhanging (the upper end portion and the vertical center portion of the piezoelectric driving bodies 13a and 13b). It is the same as or substantially the same as the width of the lower end portion, and is wider than the width of the portion of the piezoelectric drive bodies 13a, 13b where there is no overhanging portion. The through holes 14hd and 14hd at the lower ends of the upper amplification springs 14a and 14b and the through holes 15hu and 15hu at the upper ends of the lower amplification springs 15a and 15b do not have the protruding portions of the piezoelectric driving bodies 13a and 13b, respectively. It arrange | positions at the width direction outer side of the part, and is exposed to the width direction outer side of the piezoelectric drive bodies 13a and 13b so that it may not overlap with the piezoelectric drive bodies 13a and 13b, respectively. Thus, the upper amplification springs 14a and 14b and the upper mass body 12A, and the lower amplification springs 15a and 15b and the lower mass body 12B can be connected to each other while avoiding the piezoelectric driving bodies 13a and 13b.

このとき、上側増幅ばね14a,14bの下端部と、圧電駆動体13a,13bの上下方向中央の張り出し部と、下側増幅ばね15a,15bの上端部とが、上下方向に互いに接近している。このため、これら上側増幅ばね14a,14bの下端部と、圧電駆動体13a,13bの上下方向中央の張り出し部と、下側増幅ばね15a,15bとに、上側質量体12Aと基準質量体11と下側質量体12Bとを、それぞれ接続すると、上側質量体12Aと基準質量体11と下側質量体12Bとが上下方向に互いに接近した位置に配置される。これにより、振動式搬送装置10の高さをさらに低減できる。   At this time, the lower end portions of the upper amplification springs 14a and 14b, the projecting portion at the center in the vertical direction of the piezoelectric driving bodies 13a and 13b, and the upper end portions of the lower amplification springs 15a and 15b are close to each other in the vertical direction. . For this reason, the upper mass body 12A and the reference mass body 11 are connected to the lower ends of the upper amplification springs 14a and 14b, the protruding portion at the center in the vertical direction of the piezoelectric driving bodies 13a and 13b, and the lower amplification springs 15a and 15b. When the lower mass body 12B is connected to each other, the upper mass body 12A, the reference mass body 11 and the lower mass body 12B are arranged at positions close to each other in the vertical direction. Thereby, the height of the vibration type conveying apparatus 10 can be further reduced.

また、圧電駆動体13a,13bと上側増幅ばね14a,14bの間と、圧電駆動体13a,13bと下側増幅ばね15a,15bの間とには、それぞれ図示しないスペーサが介挿されている。このため、圧電駆動体13a,13bと上側増幅ばね14a,14b、及び、圧電駆動体13a,13bと下側増幅ばね15a,15bは、それぞれ前後方向(搬送方向)に所定間隔を開けて配置される。この状態で圧電駆動体13a,13bを加振させると、上側増幅ばね14a,14bの下端部の振動方向と、下側増幅ばね15a,15bの上端部の振動方向とが、それぞれ前側に向かって斜め上方になる。これにより、搬送体20を含む上側質量体12Aと下側質量体12Bとは、それぞれ前側に向かって斜め上方に振動する。この振動は、搬送体20の搬送路上の搬送物に前側へ移動する推進力を与える。本実施形態では、圧電駆動体13a,13bと上側増幅ばね14a,14bの間の間隔と、圧電駆動体13a,13bと下側増幅ばね15a,15bの間の間隔とは、それぞれ0.5mmに設定されている。   In addition, spacers (not shown) are interposed between the piezoelectric drive bodies 13a and 13b and the upper amplification springs 14a and 14b, and between the piezoelectric drive bodies 13a and 13b and the lower amplification springs 15a and 15b, respectively. For this reason, the piezoelectric drive bodies 13a and 13b and the upper amplification springs 14a and 14b, and the piezoelectric drive bodies 13a and 13b and the lower amplification springs 15a and 15b are arranged at predetermined intervals in the front-rear direction (conveyance direction), respectively. The When the piezoelectric driving bodies 13a and 13b are vibrated in this state, the vibration direction of the lower ends of the upper amplification springs 14a and 14b and the vibration direction of the upper ends of the lower amplification springs 15a and 15b are directed toward the front side, respectively. Slightly upward. As a result, the upper mass body 12A and the lower mass body 12B including the transport body 20 vibrate obliquely upward toward the front side. This vibration gives a propulsive force that moves forward to the transported object on the transport path of the transport body 20. In the present embodiment, the distance between the piezoelectric drive bodies 13a, 13b and the upper amplification springs 14a, 14b and the distance between the piezoelectric drive bodies 13a, 13b and the lower amplification springs 15a, 15b are each 0.5 mm. Is set.

図1に示すように、これら上側増幅ばね14a,14bと下側増幅ばね15a,15bとの双方は、圧電駆動体13a,13bの後側に配置されている。言い換えると、搬送方向の前方位置にある圧電駆動体13aは、上側増幅ばね14aと下側増幅ばね15aの前側に配置されており、搬送方向の後方位置にある圧電駆動体13bも、上側増幅ばね14bと下側増幅ばね15bの前側に配置されている。これにより、搬送体20における搬送路全体に亘る搬送力を均一化できる。   As shown in FIG. 1, both the upper amplification springs 14a and 14b and the lower amplification springs 15a and 15b are arranged on the rear side of the piezoelectric driving bodies 13a and 13b. In other words, the piezoelectric drive body 13a at the front position in the transport direction is disposed in front of the upper amplification spring 14a and the lower amplification spring 15a, and the piezoelectric drive body 13b at the rear position in the transport direction is also the upper amplification spring. 14b and the front side of the lower amplification spring 15b. Thereby, the conveyance force over the whole conveyance path in the conveyance body 20 can be equalize | homogenized.

また、基台19の両側面には、図示しないカバー板が取り付けられている。これらカバー板は、基台19から上方へ伸びており、上側質量体12Aの下側部分の側方位置まで達しており、搬送体20はカバー板の上側に露出する。つまり、これらカバー板の内側に上側質量体12Aの下側部分と基準質量体11と下側質量体12Bとが収容される。   In addition, cover plates (not shown) are attached to both side surfaces of the base 19. These cover plates extend upward from the base 19 and reach the lateral position of the lower portion of the upper mass body 12A, and the conveying body 20 is exposed on the upper side of the cover plate. That is, the lower portion of the upper mass body 12A, the reference mass body 11, and the lower mass body 12B are accommodated inside these cover plates.

図6は本実施形態の振動式搬送装置と、従来の振動式搬送装置との共振周波数を対比したグラフである。図6に示すように、本実施形態の振動式搬送装置10の共振周波数は約490Hzであり、その振幅が0.17mmである。これに対して、従来の振動式搬送装置の共振周波数は約380Hzであり、その振幅が0.44mmである。これは上側増幅ばね14a,14bと下側増幅ばね15a,15bとの上下方向の長さが従来に比べて短いことに起因する。これにより、本実施形態の振動式搬送装置10では、従来に比べて、高周波、かつ、小さい振幅の振動で搬送物を搬送できる。   FIG. 6 is a graph comparing the resonance frequencies of the vibration transfer device of the present embodiment and the conventional vibration transfer device. As shown in FIG. 6, the resonant frequency of the vibration type conveyance device 10 of this embodiment is about 490 Hz, and the amplitude thereof is 0.17 mm. On the other hand, the resonance frequency of the conventional vibratory transfer device is about 380 Hz, and the amplitude thereof is 0.44 mm. This is because the vertical lengths of the upper amplification springs 14a and 14b and the lower amplification springs 15a and 15b are shorter than the conventional one. Thereby, in the vibration type conveying apparatus 10 of this embodiment, compared with the past, a conveyed product can be conveyed with the vibration of a high frequency and small amplitude.

このように構成された振動式搬送装置10において、圧電駆動体13a,13bを図示しない制御駆動ユニットにより稼働させると、圧電駆動体13a,13bは相互に同位相で搬送方向の前後で撓み変形して振動を発生する。この振動は、圧電駆動体13a,13bの上側圧電駆動部13au,13buから上側増幅ばね14a,14bを経由して上側質量体12Aに伝達されるとともに、圧電駆動体13a,13bの下側圧電駆動部13ad,13bdから下側増幅ばね15a,15bを経由して下側増幅ばね12Bに伝達される。   In the vibration type conveying apparatus 10 configured as described above, when the piezoelectric driving bodies 13a and 13b are operated by a control driving unit (not shown), the piezoelectric driving bodies 13a and 13b are flexibly deformed before and after the conveying direction in the same phase. Generate vibration. This vibration is transmitted from the upper piezoelectric driving portions 13au and 13bu of the piezoelectric driving bodies 13a and 13b to the upper mass body 12A via the upper amplification springs 14a and 14b, and the lower piezoelectric driving of the piezoelectric driving bodies 13a and 13b. The signals are transmitted from the portions 13ad and 13bd to the lower amplification spring 12B via the lower amplification springs 15a and 15b.

このとき、圧電駆動体13a,13bの上端部、つまり、上側圧電駆動部13au,13buの上端部は圧電駆動体13a,13bの上下方向中央を中心としてほぼ円弧状に振動し、上側増幅ばね14a,14bの下端部は上記円弧状より大きな曲率半径の円弧状に振動する。同様に、圧電駆動体13a,13bの下端部、つまり、下側圧電駆動部13ad,13bdの下端部は圧電駆動体13a,13bの上下方向中央を中心としてほぼ円弧状に振動し、下側増幅ばね15a,15bの上端部は上記円弧状より大きな曲率半径の円弧状に振動する。上記振動により、基準質量体11と、上側質量体12A及び下側質量体12Bとは、相互に搬送方向に逆位相で振動し、上側質量体12Aと下側質量体12Bとは相互に搬送方向に同位相で振動する。   At this time, the upper end portions of the piezoelectric drive bodies 13a and 13b, that is, the upper end portions of the upper piezoelectric drive portions 13au and 13bu vibrate in a substantially arc shape around the center in the vertical direction of the piezoelectric drive bodies 13a and 13b, and the upper amplification spring 14a. , 14b vibrate in an arc shape having a larger radius of curvature than the arc shape. Similarly, the lower end portions of the piezoelectric drive bodies 13a and 13b, that is, the lower end portions of the lower piezoelectric drive sections 13ad and 13bd vibrate in a substantially arc shape around the center in the vertical direction of the piezoelectric drive bodies 13a and 13b. The upper ends of the springs 15a and 15b vibrate in an arc shape having a larger radius of curvature than the arc shape. Due to the vibration, the reference mass body 11, the upper mass body 12 </ b> A, and the lower mass body 12 </ b> B vibrate in opposite phases in the transport direction, and the upper mass body 12 </ b> A and the lower mass body 12 </ b> B are transported in the transport direction. Vibrate in the same phase.

本実施形態においては、圧電駆動体13a,13bと上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdと上側増幅ばね14a,14bと下側増幅ばね15a,15bとは全て搬送方向に撓み変形可能に構成されており、基準質量体11と圧電駆動体13a,13b、及び、上側圧電駆動部13au,13buと上側増幅ばね14a,14b、上側増幅ばね14a,14bと上側質量体12A、下側圧電駆動部13ad,13bdと下側増幅ばね15a,15b、下側増幅ばね15a,15bと下側質量体12Bは、それぞれ搬送方向に直交する左右方向に対称に接続されているので、圧電駆動体13a,13bと上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdと上側増幅ばね14a,14bと下側増幅ばね15a,15bとがそれぞれねじれる方向に振動することを抑制できる。これにより、装置全体の首振りを防止でき、搬送路全体に亘って搬送速度を均一にできるとともに、振動による搬送物の搬送姿勢の乱れも低減できる。   In the present embodiment, the piezoelectric drive bodies 13a and 13b, the upper piezoelectric drive units 13au and 13bu, the lower piezoelectric drive units 13ad and 13bd, the upper amplification springs 14a and 14b, and the lower amplification springs 15a and 15b are all in the transport direction. The reference mass body 11 and the piezoelectric drive bodies 13a and 13b, the upper piezoelectric drive sections 13au and 13bu and the upper amplification springs 14a and 14b, the upper amplification springs 14a and 14b and the upper mass body 12A, The lower piezoelectric drive units 13ad and 13bd and the lower amplification springs 15a and 15b, and the lower amplification springs 15a and 15b and the lower mass body 12B are connected symmetrically in the left-right direction orthogonal to the conveying direction. Driving bodies 13a and 13b, upper piezoelectric driving sections 13au and 13bu, lower piezoelectric driving sections 13ad and 13bd, and upper amplification springs 14a and 14b It is possible to prevent the lower amplification spring 15a, and a 15b vibrate in the direction of twisting respectively. As a result, the entire apparatus can be prevented from swinging, the transport speed can be made uniform over the entire transport path, and disturbances in the transport posture of the transported object due to vibration can be reduced.

この実施形態においては、上側圧電駆動部13au,13buと上側増幅ばね14a,14bと上側質量体12Aが基準質量体11の上側に配置されており、下側圧電駆動部13ad,13bdと下側増幅ばね15a,15bと下側質量体12Bが基準質量体11の下側に配置されており、上側質量体12Aの加振機構と下側質量体12Bの加振機構とが上下に分離されるので、上側質量体12Aの振動系に下側質量体12Bの振動が混入したり、下側質量体12Bの振動系に上側質量体12Aの振動が混入したりすることを防止でき、上側質量体12Aの振動系と下側質量体12Bの振動系とのそれぞれの振動の乱れを低減できる。   In this embodiment, the upper piezoelectric drive units 13au and 13bu, the upper amplification springs 14a and 14b, and the upper mass body 12A are disposed above the reference mass body 11, and the lower piezoelectric drive units 13ad and 13bd and the lower amplification unit are disposed. Since the springs 15a and 15b and the lower mass body 12B are arranged below the reference mass body 11, the vibration mechanism of the upper mass body 12A and the vibration mechanism of the lower mass body 12B are separated vertically. The vibration of the lower mass body 12B can be prevented from being mixed into the vibration system of the upper mass body 12A, and the vibration of the upper mass body 12A can be prevented from being mixed into the vibration system of the lower mass body 12B. The vibration disturbances of the vibration system of the lower mass body 12B and the vibration system of the lower mass body 12B can be reduced.

また、基準質量体11と、上側質量体12A及び下側質量体12Bとは、相互に搬送方向に逆位相で振動し、上側質量体12Aと下側質量体12Bは相互に搬送方向に同位相で振動するので、基準質量体11の反力と、上側質量体12A及び下側質量体12Bの反力とが互いに打ち消し合って、互いに相殺又は減殺される。その結果、基準質量体11から防振ばね16a,16bを介して基台19へ伝達される振動を低減できる。   Further, the reference mass body 11, the upper mass body 12A, and the lower mass body 12B vibrate in opposite phases in the transport direction, and the upper mass body 12A and the lower mass body 12B are in phase with each other in the transport direction. Therefore, the reaction force of the reference mass body 11 and the reaction force of the upper mass body 12A and the lower mass body 12B cancel each other and cancel each other or are reduced. As a result, vibration transmitted from the reference mass body 11 to the base 19 via the vibration isolation springs 16a and 16b can be reduced.

このとき、上側質量体12Aと基準質量体11と下側質量体12Bとは上下方向に配置されており、上側質量体12Aと基準質量体11から生じる回転モーメントと、基準質量体11と下側質量体12Bから生じる回転モーメントとが逆向きになるので、これら回転モーメントが互いに打ち消し合って、互いに相殺又は減殺される。このため、振動式搬送装置10のピッチング(搬送方向に対して直交する水平方向の軸線周りの振動)を低減でき、基準質量体11から防振ばね16a,16bを介して基台19へ伝達される上下方向の振動が低減され、搬送路全体に亘る搬送速度を均一にできるとともに、搬送物の姿勢の乱れを低減できる。   At this time, the upper mass body 12A, the reference mass body 11 and the lower mass body 12B are arranged in the vertical direction, the rotational moment generated from the upper mass body 12A and the reference mass body 11, the reference mass body 11 and the lower mass body Since the rotational moments generated from the mass body 12B are opposite to each other, the rotational moments cancel each other and are offset or reduced. For this reason, the pitching (vibration around the horizontal axis perpendicular to the conveyance direction) of the vibration type conveyance device 10 can be reduced, and the vibration is transferred from the reference mass body 11 to the base 19 via the vibration isolation springs 16a and 16b. The vertical vibrations can be reduced, the transport speed over the entire transport path can be made uniform, and the posture disturbance of the transported object can be reduced.

尚、上記実施形態の振動式搬送装置10は、上述の図示例にのみ限定されるものではなく、本考案の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。例えば、本実施形態の振動式搬送装置10は搬送体20が上側質量体12Aに設けられているが、下側質量体12Bに設けられていてもよいし、基準質量体11に設けられていてもよいし、上側質量体12Aと下側質量体12Bの双方に設けられていてもよい。搬送体20が基準質量体11に設けられる場合には搬送物は前側から後側へ搬送される。   In addition, the vibration type conveying apparatus 10 of the said embodiment is not limited only to the above-mentioned example of illustration, Of course, it can add various changes within the range which does not deviate from the summary of this invention. For example, in the vibration type conveyance device 10 of the present embodiment, the conveyance body 20 is provided on the upper mass body 12A, but may be provided on the lower mass body 12B or provided on the reference mass body 11. Alternatively, both the upper mass body 12A and the lower mass body 12B may be provided. When the transport body 20 is provided on the reference mass body 11, the transported object is transported from the front side to the rear side.

なお、本実施形態の振動式搬送装置10は上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdが一体形成された圧電駆動体13a,13bを用いているが、上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdが別々の圧電駆動体であってもよい。この場合、上側圧電駆動部13au,13buに相当する圧電駆動体と、下側圧電駆動部13ad,13bdに相当する圧電駆動体とはそれぞれ基準質量体11に接続される。また、本実施形態の振動式搬送装置10は圧電駆動体13a,13bが前側と後側(搬送方向の前後位置)にそれぞれ配置されているが、前側(搬送方向の前位置)のみに配置されていてもよいし、後側(搬送方向の後位置)のみに配置されていてもよい。上側圧電駆動部13au,13buと下側圧電駆動部13ad,bdとが別々の圧電駆動体である場合には、上側圧電駆動部13auが前側(搬送方向の前位置)に配置されて、下側圧電駆動部13bdが後側(搬送方向の後位置)に配置されていてもよいし、この反対に、上側圧電駆動部13adが後側(搬送方向の後位置)に配置されて、下側圧電駆動部13adが前側(搬送方向の前位置)に配置されていてもよい。   In addition, although the vibration type conveying apparatus 10 of this embodiment uses the piezoelectric drive bodies 13a and 13b in which the upper piezoelectric drive units 13au and 13bu and the lower piezoelectric drive units 13ad and 13bd are integrally formed, the upper piezoelectric drive unit 13au. , 13bu and the lower piezoelectric drive units 13ad, 13bd may be separate piezoelectric drive bodies. In this case, the piezoelectric driving body corresponding to the upper piezoelectric driving units 13au and 13bu and the piezoelectric driving body corresponding to the lower piezoelectric driving units 13ad and 13bd are connected to the reference mass body 11, respectively. Further, in the vibration type conveyance device 10 of the present embodiment, the piezoelectric driving bodies 13a and 13b are arranged on the front side and the rear side (front and rear positions in the conveyance direction), respectively, but are arranged only on the front side (front position in the conveyance direction). It may be arranged only on the rear side (rear position in the transport direction). When the upper piezoelectric drive units 13au and 13bu and the lower piezoelectric drive units 13ad and bd are separate piezoelectric drive bodies, the upper piezoelectric drive unit 13au is disposed on the front side (the front position in the transport direction) and the lower side. The piezoelectric drive unit 13bd may be disposed on the rear side (rear position in the transport direction), and on the contrary, the upper piezoelectric drive unit 13ad is disposed on the rear side (rear position in the transport direction), and the lower piezoelectric element The drive unit 13ad may be disposed on the front side (front position in the transport direction).

また、本実施形態に用いる圧電駆動体13a,13bは、圧電体13Pが圧電駆動体13a,13bの上下方向中央に配置されているが、上側圧電駆動部13au,13buと下側圧電駆動部13ad,13bdとにそれぞれ配置されていてもよい。さらに、本実施形態に用いる圧電駆動体13a,13bはバイモルフであるが、弾性基板13Sの片面のみに圧電体13Pが配置されてなるユニモルフでもよいし、その他、公知の種々の圧電駆動体でもよい。また、上側圧電駆動部13au,13buと上側増幅ばね14a,14b、及び、下側圧電駆動部13ad,13bdは、それぞれ別体に構成されているが、搬送方向に対して直交する側方から見てU字状に一体形成されていてもよい。さらに、圧電駆動体13a,13bと上側増幅ばね14a,14bと下側増幅ばね15a,15bとは別体に構成されているが、一体形成されていてもよい。   Further, the piezoelectric driving bodies 13a and 13b used in the present embodiment have the piezoelectric body 13P arranged at the center in the vertical direction of the piezoelectric driving bodies 13a and 13b, but the upper piezoelectric driving sections 13au and 13bu and the lower piezoelectric driving section 13ad. , 13bd, respectively. Furthermore, although the piezoelectric driving bodies 13a and 13b used in the present embodiment are bimorphs, they may be unimorphs in which the piezoelectric body 13P is disposed only on one surface of the elastic substrate 13S, or may be various other known piezoelectric driving bodies. . The upper piezoelectric drive units 13au and 13bu, the upper amplification springs 14a and 14b, and the lower piezoelectric drive units 13ad and 13bd are configured separately, but are viewed from the side orthogonal to the transport direction. And may be integrally formed in a U shape. Further, although the piezoelectric drive bodies 13a and 13b, the upper amplification springs 14a and 14b, and the lower amplification springs 15a and 15b are configured separately, they may be integrally formed.

なお、圧電駆動体13a,13bと上側増幅ばね14a,14bと下側増幅ばね15a,15bとには、それぞれ貫通孔が形成されているが、貫通孔の内周にねじ山が形成されていてもよい。圧電駆動体13a,13bと上側増幅ばね14a,14bと下側増幅ばね15a,15bとのそれぞれの貫通孔は平面視円形の丸孔であるが、平面視四角形や五角形や六角形や八角形の角孔でもよいし、平面視楕円形でもよいし、長孔でもよい。   The piezoelectric driving bodies 13a and 13b, the upper amplification springs 14a and 14b, and the lower amplification springs 15a and 15b are each formed with a through hole, but a thread is formed on the inner periphery of the through hole. Also good. The through holes of the piezoelectric driving bodies 13a and 13b, the upper amplification springs 14a and 14b, and the lower amplification springs 15a and 15b are round holes in a plan view. However, the through holes are rectangular, pentagonal, hexagonal, and octagonal in plan view. A square hole may be sufficient, a planar view ellipse may be sufficient, and a long hole may be sufficient.

さらに、圧電駆動体13a,13bの上端部と下端部、及び、上側増幅ばね14a,14bの上端部、下側増幅ばね15a,15bの下端部には、それぞれ貫通孔が3つ形成されているが、幅方向中央を対称軸として幅方向に対称に形成されていればよく、貫通孔の数は特に限定されず、それぞれ貫通孔が1つ形成されていてもよいし、2つ形成されていてもよいし、4つ形成されていてもよいし、5つ形成されていてもよいし、6つ形成されていてもよい。同様に、圧電駆動体13a,13bの上下方向中央と、上側増幅ばね14a,14bの下端部と、下側増幅ばね15a,15bの上端部とには、それぞれ幅方向両側に貫通孔が1つずつ形成されているが、幅方向中央を対称軸として幅方向に対称に形成されていればよく、貫通孔の数は特に限定されず、それぞれ幅方向両側に貫通孔が2つずつ形成されていてもよいし、3つずつ形成されていてもよい。   Further, three through holes are formed in the upper and lower ends of the piezoelectric driving bodies 13a and 13b, the upper ends of the upper amplification springs 14a and 14b, and the lower ends of the lower amplification springs 15a and 15b, respectively. However, the number of through holes is not particularly limited as long as the center in the width direction is an axis of symmetry, and the number of through holes may be one, or two through holes may be formed. Alternatively, four may be formed, five may be formed, or six may be formed. Similarly, there is one through hole on each side in the width direction at the center in the vertical direction of the piezoelectric driving bodies 13a and 13b, the lower ends of the upper amplification springs 14a and 14b, and the upper ends of the lower amplification springs 15a and 15b. However, the number of through-holes is not particularly limited, and two through-holes are formed on each side in the width direction. Or three of them may be formed.

10…振動式搬送装置、1,11…基準質量体、11x…膨張部、11a,11b…連結部、2A,12A…上側質量体、2B,12B…下側質量体、3a,13a,13b…圧電駆動体、13S…弾性基板、13P…圧電体、13hc,13hu,13hd,14hu,14hd,15hu,15hd…貫通孔、3au,13au,13bu…上側圧電駆動部、3ad,13ad,13bd…下側圧電駆動部、4a,14a,14b…上側増幅ばね、14as,14bs,15as,15bs…凹部、5a,15a,15b…下側増幅ばね、16a,16b…防振ばね、17a,17b…スペーサ、19…基台、20…搬送体、U,D,F,B,P…矢印。   DESCRIPTION OF SYMBOLS 10 ... Vibration type conveying apparatus, 1,11 ... Reference | standard mass body, 11x ... Expansion part, 11a, 11b ... Connection part, 2A, 12A ... Upper mass body, 2B, 12B ... Lower mass body, 3a, 13a, 13b ... Piezoelectric driving body, 13S ... elastic substrate, 13P ... piezoelectric body, 13hc, 13hu, 13hd, 14hu, 14hd, 15hu, 15hd ... through hole, 3au, 13au, 13bu ... upper piezoelectric driving part, 3ad, 13ad, 13bd ... lower side Piezoelectric drive unit, 4a, 14a, 14b ... upper amplification spring, 14as, 14bs, 15as, 15bs ... recess, 5a, 15a, 15b ... lower amplification spring, 16a, 16b ... anti-vibration spring, 17a, 17b ... spacer, 19 ... base, 20 ... conveyance body, U, D, F, B, P ... arrows.

Claims (6)

搬送方向に向いた板面を有する板ばねを備えた一対の防振ばねと、
前記一対の防振ばねによって支持され、前記一対の防振ばねのそれぞれが前記搬送方向の前後位置で弾性接続された基準質量体と、
前記基準質量体の上方に配置された上側質量体と、
前記基準質量体の下方に配置された下側質量体と、
前記搬送方向の前後位置で前記基準質量体から上方へそれぞれ突出し、前記搬送方向に向いた板面を有する板ばねを含む一対の上側部分と、
前記搬送方向の前後位置で前記上側質量体にそれぞれ弾性接続され、前記搬送方向に向いた板面を有する板ばねからなる一対の上側増幅ばねと、
前記搬送方向の前後位置で前記基準質量体から下方へそれぞれ突出し、前記搬送方向に向いた板面を有する板ばねを含む一対の下側部分と、
前記搬送方向の前後位置で前記下側質量体にそれぞれ弾性接続され、前記搬送方向に向いた板面を有する板ばねからなる一対の下側増幅ばねと、
前記基準質量体と前記上側質量体の間、及び、前記基準質量体と前記下側質量体の間の双方に加振力を与え、前記上側質量体と前記下側質量体を同位相で振動させるとともに、前記上側質量体と前記下側質量体の振動に対して前記基準質量体を逆位相で振動させる加振装置と、
を具備し、
前記上側質量体と前記下側質量体の少なくともいずれか一方に搬送物を搬送する搬送路が設けられ、
前記一対の上側部分と前記一対の上側増幅ばねはそれぞれ搬送方向に配列されるとともに、前記一対の下側部分と前記一対の下側増幅ばねはそれぞれ搬送方向に配列され、
前記基準質量体と前記一対の上側部分と前記一対の上側増幅ばねと前記上側質量体とが順次接続されるとともに、前記基準質量体と前記一対の下側部分と前記一対の下側増幅ばねと前記下側質量体とが順次接続され
前記一対の上側増幅ばねと前記上側質量体の接続位置は、前記一対の上側部分と前記一対の上側増幅ばねの接続位置より下方に位置し、前記一対の下側増幅ばねと前記下側質量体の接続位置は、前記一対の下側部分と前記一対の下側増幅ばねの接続位置より上方に位置する
ことを特徴とする振動式搬送装置。
A pair of anti-vibration springs including a leaf spring having a plate surface facing the conveying direction;
A reference mass body supported by the pair of anti-vibration springs, each of the pair of anti-vibration springs being elastically connected at front and rear positions in the transport direction;
An upper mass disposed above the reference mass;
A lower mass disposed below the reference mass;
A pair of upper portions including leaf springs each projecting upward from the reference mass body at the front-rear position in the transport direction and having a plate surface facing the transport direction;
A pair of upper amplifying springs each comprising a leaf spring elastically connected to the upper mass body at the front and rear positions in the transport direction and having a plate surface facing the transport direction;
A pair of lower portions including a leaf spring that protrudes downward from the reference mass body in the front-rear position in the transport direction and has a plate surface facing the transport direction;
A pair of lower amplifying springs each comprising a leaf spring elastically connected to the lower mass body at front and rear positions in the transport direction and having a plate surface facing the transport direction;
An excitation force is applied between the reference mass body and the upper mass body and between the reference mass body and the lower mass body, and the upper mass body and the lower mass body vibrate in the same phase. And a vibration device that vibrates the reference mass body in an opposite phase with respect to the vibration of the upper mass body and the lower mass body,
Comprising
A transport path for transporting a transported object is provided in at least one of the upper mass body and the lower mass body,
The pair of upper portions and the pair of upper amplification springs are each arranged in the carrying direction, and the pair of lower portions and the pair of lower amplification springs are arranged in the carrying direction, respectively.
The reference mass body, the pair of upper portions, the pair of upper amplification springs, and the upper mass body are sequentially connected, and the reference mass body, the pair of lower portions, and the pair of lower amplification springs, The lower mass body is sequentially connected ,
The connection position of the pair of upper amplification springs and the upper mass body is located below the connection position of the pair of upper portions and the pair of upper amplification springs, and the pair of lower amplification springs and the lower mass body The vibration transfer device is characterized in that the connection position is located above the connection position between the pair of lower portions and the pair of lower amplification springs .
前記基準質量体の上側に前記一対の上側部分と前記一対の上側増幅ばねと前記上側質量体が配置され、前記基準質量体の下側に前記一対の下側部分と前記一対の下側増幅ばねと前記下側質量体が配置されることを特徴とする請求項1に記載の振動式搬送装置。 The pair of upper portions, the pair of upper amplification springs, and the upper mass body are disposed above the reference mass body, and the pair of lower portions and the pair of lower amplification springs are disposed below the reference mass body. The vibratory transfer device according to claim 1, wherein the lower mass body is disposed. 前記基準質量体と前記一対の上側部分、及び、前記一対の上側部分と前記一対の上側増幅ばね、前記一対の上側増幅ばねと前記上側質量体、前記基準質量体と前記一対の下側部分、前記一対の下側部分と前記一対の下側増幅ばね、前記一対の下側増幅ばねと前記下側質量体は、それぞれ搬送方向に対して直交する幅方向の中央を対称軸として幅方向に対称に接続されることを特徴とする請求項1又は請求項2に記載の振動式搬送装置。   The reference mass body and the pair of upper portions; the pair of upper portions and the pair of upper amplification springs; the pair of upper amplification springs and the upper mass body; the reference mass body and the pair of lower portions; The pair of lower portions and the pair of lower amplification springs, and the pair of lower amplification springs and the lower mass body are symmetrical in the width direction with the center in the width direction orthogonal to the transport direction as the symmetry axis. The vibratory transfer device according to claim 1, wherein the vibration transfer device is connected to the vibration transfer device. 前記加振装置は、前記一対の上側部分の少なくとも一方を構成する上側圧電駆動部と、前記一対の下側部分の少なくとも一方を構成する下側圧電駆動部とを有することを特徴とする請求項1から請求項3までのいずれか1項に記載の振動式搬送装置。   2. The vibration exciter includes an upper piezoelectric drive unit that constitutes at least one of the pair of upper parts, and a lower piezoelectric drive unit that constitutes at least one of the pair of lower parts. The vibration type conveying apparatus according to any one of claims 1 to 3. 前記加振装置は、前記上側圧電駆動部と前記下側圧電駆動部とが一体形成されており、前記上側圧電駆動部と前記下側圧電駆動部の間の中間部が前記基準質量体に接続されており、板面が前記搬送方向に向いた板状であり、全体として一体に撓み変形するように構成された圧電駆動体を有することを特徴とする請求項4に記載の振動式搬送装置。   In the vibrating device, the upper piezoelectric drive unit and the lower piezoelectric drive unit are integrally formed, and an intermediate portion between the upper piezoelectric drive unit and the lower piezoelectric drive unit is connected to the reference mass body. 5. The vibratory transfer device according to claim 4, further comprising: a piezoelectric driving body configured such that the plate surface has a plate shape facing the transfer direction and is bent and deformed integrally as a whole. . 前記搬送路は前記上側質量体に設けられることを特徴とする請求項1から請求項5までのいずれか1項に記載の振動式搬送装置。   The vibratory transfer apparatus according to claim 1, wherein the transfer path is provided in the upper mass body.
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