JPH03147652A - Transporting device - Google Patents
Transporting deviceInfo
- Publication number
- JPH03147652A JPH03147652A JP1286151A JP28615189A JPH03147652A JP H03147652 A JPH03147652 A JP H03147652A JP 1286151 A JP1286151 A JP 1286151A JP 28615189 A JP28615189 A JP 28615189A JP H03147652 A JPH03147652 A JP H03147652A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- displacement
- elliptical
- vibrating
- actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 abstract description 48
- 230000008602 contraction Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 9
- 229910001369 Brass Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 2
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の技術分野］
本発明は、例えば小型モータ等に代わる動力発生源とし
て利用される超音波アクチュエータを使用して、シート
状あるいは板状非搬送物の搬送を行なう搬送装置に関す
る。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention conveys sheet-like or plate-like non-transported objects using an ultrasonic actuator that is used as a power generation source in place of, for example, a small motor. Regarding a conveyance device.
［従来技術とその問題点］
従来、シート状あるいは板状の物体を搬送する場合には
、ローラをモータにより回転させ、この回転しているロ
ーラの表面に非粛送物を押圧当接させることにより、該
ローラの回転に応じて上記物体の搬送を行なっている。[Prior art and its problems] Conventionally, when conveying a sheet-like or plate-like object, a roller is rotated by a motor, and the object that is not being conveyed is forced into contact with the surface of the rotating roller. The object is conveyed according to the rotation of the roller.
しかしながら、上記モータを使用した搬送手段では、該
モータの回転をギア等を介してローラに伝達する必要が
あるため、装置の部品点数、組立て工数が多くなり、装
置の小型化を妨げる問題がある。However, in the above-mentioned conveyance means using a motor, it is necessary to transmit the rotation of the motor to the rollers via gears, etc., which increases the number of parts and the number of assembly steps for the device, which poses a problem that hinders miniaturization of the device. .
特に、プリンタにおける紙送り装置等では、上記小型化
の問題が顕著である。In particular, the above-mentioned problem of miniaturization is noticeable in paper feeding devices and the like in printers.
［発明の目的〕
本発明は上記課題に鑑みなされたもので、モータによる
ギア等を介した搬送手段を利用すること無く、シート状
あるいは板状搬送物の搬送を行なうことが可能になる搬
送装置を提供することを目的とする。[Object of the Invention] The present invention has been made in view of the above-mentioned problems, and provides a conveying device that can convey sheet-like or plate-like objects without using a conveying means using a motor gear or the like. The purpose is to provide
［発明の要点コ
すなわち本発明に係わる搬送装置は、円柱状体と、この
円柱状体を間欠的に楕円形に変形させる円柱変形手段と
、上記円柱状体の外周面に非搬送物を当接させる搬送物
当接手段とを備え、上記円柱状体の間欠的楕円変形に伴
いその外周面に非搬送物が接して搬送されるよう構成し
たものである。[Key Points of the Invention In other words, the conveying device according to the present invention comprises a cylindrical body, a cylindrical deforming means for intermittently deforming the cylindrical body into an elliptical shape, and a non-conveyed object applied to the outer peripheral surface of the cylindrical body. and conveyed object abutting means, and is configured such that the non-transferred object is conveyed in contact with the outer circumferential surface of the cylindrical body as the cylindrical body undergoes intermittent elliptical deformation.
［発明の実施例］ 以下図面により本発明の一実施例について説明する。[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.
第１図は搬送装置の外観構成を示すもので、この搬送装
置における搬送動力源には、円柱状の超音波アクチュエ
ータ１が使用される。この超音波アクチュエータ１は、
電源周波数に応じて定められる一定の周期で楕円変形を
繰返し、その外周面上の複数の点において上記搬送動力
源としての変位を生じるもので、この超音波アクチュエ
ータ１は、上記変位点を上に位置させた状態で、コ字状
の基部２に対し、その左右下面側をそれぞれゴム等の弾
性体３ａ〜３Ｃを介して支持される。FIG. 1 shows the external configuration of a conveyance device, and a cylindrical ultrasonic actuator 1 is used as a conveyance power source in this conveyance device. This ultrasonic actuator 1 is
The ultrasonic actuator 1 repeats elliptical deformation at a constant period determined according to the power frequency, and causes displacement at multiple points on its outer peripheral surface as the conveying power source. In the positioned state, the left and right lower surfaces of the U-shaped base 2 are supported via elastic bodies 3a to 3C, such as rubber, respectively.
そして、上記超音波アクチュエータ１の上部外周変位点
には、その周方向を同しにしたローラ４が当接され、ば
ね等により予め設定される圧力Ｐで押圧される。A roller 4 whose circumferential direction is the same is brought into contact with a displacement point of the upper outer periphery of the ultrasonic actuator 1, and is pressed with a preset pressure P by a spring or the like.
すなわち、上記超音波アクチュエータ１に間欠的な楕円
変形が生じると、その変位点に当接させたローラ４が矢
印ａの方向に回転されるもので、つまり、この超音波ア
クチュエータ１とローラ４との間にプリント用紙５をｔ
ｌ１人することで、該ローラ４を回転させる力はプリン
ト用紙５に伝達され、矢印Ｈで示す方向に搬送されるこ
とになる。That is, when intermittent elliptical deformation occurs in the ultrasonic actuator 1, the roller 4 that is in contact with the displacement point is rotated in the direction of arrow a. Insert the print paper 5 between
By doing so, the force for rotating the roller 4 is transmitted to the printing paper 5, and the printing paper 5 is conveyed in the direction shown by the arrow H.
第２図（Ａ）〜（Ｃ）は何れも上記超音波アクチュエー
タ１の構成を示すもので、同図（Ａ）は外観図、同図（
Ｂ）はその側面図、同図（Ｃ）はそのＡ−Ａ線断面図で
ある。2(A) to 2(C) all show the configuration of the ultrasonic actuator 1, and FIG. 2(A) is an external view, and FIG.
B) is a side view thereof, and FIG. 3(C) is a sectional view taken along line A-A.
この超音波アクチュエータ１の外形は、例えば外径１０
．３５ｍｍ、厚さ０．５開のアルミニウムあるいは真鍮
等でなる振動円筒体１１からなり、この振動円筒体１１
内部の軸方向中心付近には、棒状の圧電アクチュエータ
１２Ａ、１２Ｂが円筒体直径線に沿って設けられる。上
記第１の圧電アクチュエータ１２Ａを垂直方向に対し２
２．５’傾斜させた径方向位置に設け、さらに上記第１
の圧電アクチュエータ１２Ａから４５°傾斜させて第２
の圧電アクチュエータ１２Ｂを設ける。The outer diameter of this ultrasonic actuator 1 is, for example, 10
．． It consists of a vibrating cylindrical body 11 made of aluminum, brass, etc. with a diameter of 35 mm and a thickness of 0.5 mm.
Rod-shaped piezoelectric actuators 12A and 12B are provided near the axial center of the interior along the diameter line of the cylinder. The first piezoelectric actuator 12A is
2.5' inclined radial position, and the first
The second piezoelectric actuator 12A is tilted 45° from the piezoelectric actuator 12A.
A piezoelectric actuator 12B is provided.
第３図は上記圧電アクチュエータ１２Ａ。FIG. 3 shows the piezoelectric actuator 12A.
１２Ｂの構成を示すもので、この圧電アクチュエータ１
２Ａ、１２Ｂは、ＰＺＴ（ジルコン酸チタン酸鉛）系の
圧電素子等からなる微小な圧電セラミック１２ａ、１２
ｂ、・・・を、それぞれ薄い電極１３ａ、１３ｂ、・・
・を介して多数積層してなり、その長手方向の一端及び
他端が上記振動円筒体１１の内周面に対し接着固定され
る。この場合、圧電アクチュエータ１２Ａ、１２Ｂの各
端部と振動円筒体１１との間には、アルミニウム又は真
鍮等の座板が介在されエポキシ樹脂系接着剤等の比較的
硬質な接着剤により接着される。そして、上記圧電アク
チュエータ１２Ａ、１２Ｂの各電極１３ａ、１３ｂ、・
・・に対しては、それぞれ隣接する個々の圧電セラミッ
ク１２ａ、１２ｂ、・・・間に逆相の電圧が加わるよう
電源部１４から所定の周波数を有する交流電圧を印加す
る。そして、第１及び第２の圧電アクチュエータ１２Ａ
、１２Ｂには、上記電源部１４からの交流電圧をさらに
１８０°位相を異ならせて印加する。本実施例における
印加電圧は８ Ｖ １ｌａｘ ｓその印加電圧周波数は
振動円筒体１１がアルミニウムであれば３０ｋＨｚｓ真
鍮であれば３６ｋＨｚに設定するが、この値は得たい駆
動トルク、速度あるいは振動円筒体１１の外径寸法や肉
厚等の関係により変更される。This shows the configuration of piezoelectric actuator 12B.
2A and 12B are minute piezoelectric ceramics 12a and 12 made of PZT (lead zirconate titanate)-based piezoelectric elements, etc.
b, . . . are thin electrodes 13a, 13b, .
A large number of vibrating cylinders are laminated with each other, and one longitudinal end and the other end thereof are adhesively fixed to the inner circumferential surface of the vibrating cylindrical body 11. In this case, a seat plate made of aluminum or brass is interposed between each end of the piezoelectric actuators 12A, 12B and the vibrating cylindrical body 11, and is bonded with a relatively hard adhesive such as an epoxy resin adhesive. . Then, each electrode 13a, 13b of the piezoelectric actuator 12A, 12B,
. . , an alternating current voltage having a predetermined frequency is applied from the power supply section 14 so that a voltage of opposite phase is applied between the adjacent individual piezoelectric ceramics 12a, 12b, . And the first and second piezoelectric actuators 12A
, 12B, the AC voltage from the power supply unit 14 is applied with a phase difference of 180°. The applied voltage in this example is 8 V 1lax s.The applied voltage frequency is set to 30 kHz if the vibrating cylinder 11 is made of aluminum and 36 kHz if it is made of brass. It will be changed depending on the outer diameter and wall thickness of the.
次に、上記構成による超音波アクチュエータ１の駆動力
発生動作について説明する。Next, the driving force generating operation of the ultrasonic actuator 1 with the above configuration will be explained.
まず、圧電アクチュエータ１２Ａ、１２Ｂにそれぞれ逆
位相にした例えば３０ ｋ Ｈｚの交流電圧を印加する
と、この圧電アクチュエータ１２人。First, when an AC voltage of, for example, 30 kHz with opposite phases is applied to the piezoelectric actuators 12A and 12B, 12 piezoelectric actuators are activated.
１２Ｂには印加電圧周波数に応じた長手方向の伸縮運動
がそれぞれ逆位相で発生する。12B, longitudinal expansion and contraction movements occur in opposite phases in accordance with the applied voltage frequency.
第４図は上記圧電アクチュエータ１２Ａ。FIG. 4 shows the piezoelectric actuator 12A.
１２Ｂの各伸縮運動に伴い振動円筒体１１に生じる変位
状態を示すものである。ここで、以下の説明においては
、振動円筒体１１の中心軸の垂直方向上方を００とし該
振動円筒体１１の中心軸を原点として周方向に沿って時
計回りに順次角度を付して説明する。この図において、
圧電アクチュエータ１２Ａ、１２Ｂはそれぞれ上記振動
円筒体１１に対し２２．５”−２０２，５’及び６７．
５’−２４７，５°方向に設けられたもので、この圧電
アクチュエータ１２Ａ、１２Ｂの各逆位相の伸縮運動に
応じて振動円筒体１１には垂直方向（０°−１８０°方
向）の楕円変位及び水平方向（９０”−２７０°方向）
の楕円変位がそれぞれ交互に生じるようになる。It shows the displacement state that occurs in the vibrating cylindrical body 11 due to each expansion and contraction movement of the vibrating cylinder 12B. In the following description, the vertical direction above the central axis of the vibrating cylindrical body 11 is assumed to be 00, and the central axis of the vibrating cylindrical body 11 is the origin, and angles are sequentially added clockwise along the circumferential direction. . In this diagram,
The piezoelectric actuators 12A, 12B are 22.5"-202, 5' and 67.5" relative to the vibrating cylinder 11, respectively.
The vibrating cylinder 11 is provided with an elliptical displacement in the vertical direction (0°-180° direction) in response to the opposite phase expansion and contraction movements of the piezoelectric actuators 12A and 12B. and horizontal direction (90”-270° direction)
elliptical displacements occur alternately.
つまり、２つの圧電アクチュエータ１２Ａ。That is, two piezoelectric actuators 12A.
１２Ｂの固着中心位置（４５°）に対応する振動円筒体
１１の円弧位置ｊを支点にして、例えば２２．５°位置
が外方へ伸び６７．５°位置が内方へ縮む運動と、２２
．５°位置が内方へ縮み６７．５°位置が外方へ伸びる
運動とが交互に連続して繰返されるもので、これにより
第１のアクチュエータ１２Ａが伸びた状態では６７．５
°位置から２２．５’位置へ上り傾斜となるＯ″位置最
大外方変位Ｘ１の楕円変位が生じ、また、第２のアクチ
ュエータ１２Ｂが伸びた状態では、２２．５°位置から
６７．５°位置へ上り傾斜となる９０’位置最大外方変
位の楕円変位ｙ１が生じる。この場合、振動円筒体１１
の４５″１３５°、２２５°、３１５＠方向には、上記
２つの楕円運動の支点となり径方向には全く変位しない
静止点が生じる。With the arc position j of the vibrating cylindrical body 11 corresponding to the fixed center position (45°) of 12B as a fulcrum, for example, the 22.5° position extends outward and the 67.5° position contracts inward;
．． The motion of contracting inward at the 5° position and extending outward at the 67.5° position is alternately and continuously repeated, so that when the first actuator 12A is extended, it is 67.5°.
An elliptical displacement of the O'' position maximum outward displacement X1, which is an upward slope from the 22.5° position to the 22.5' position, occurs, and when the second actuator 12B is extended, it is 67.5° from the 22.5° position. An elliptical displacement y1 of the maximum outward displacement at the 90' position, which slopes upward to the position, occurs.In this case, the vibrating cylindrical body 11
In the 135°, 225°, and 315° directions of 45″, stationary points are generated that serve as fulcrums for the two elliptical movements and are not displaced at all in the radial direction.
一方、Ｏｏ及び１８０”方向の楕円変位に伴い、０″あ
るいは１８０＠に位置する質点Ｘが幅ｘ１で径方向に変
位すると、上記静止点となる４５” 、１３５” 、２
２５” 、３１５”の質点ｊには周方向変位ｊ１が生じ
、また、９０＠及び２７０”方向の楕円変位に伴い ９
０″あるいは２７００に位置する質点ｙが幅ｙ１で径方
向に変位すると、上記各静止点となる質点ｊには周方向
変位ｊ２が生じる。すると、上記径方向変位最大点とな
るＸ及びｙ（０”、９０゜１８０°、２７０’）と周方
向変位最大点となるｊ （４５”、１３５”、２２５”
３１５”）との間の各質点ｋ（例えば２２．５”
６７．５゜１１２．５” １５７．５” ２
０２．５”２４７、５° ２９２．５° ３３７．５°
）には、その径及び周方向変位が組合わされた変位に１
及びに２が生じるもので、この径及び周方向の組合わせ
変位点ｋに円筒状の回転子を当接させると、この回転子
は該質点ｋが径方向外方へに１で変位する際の周方向変
位ｊ１に一致する方向に回転するようになる。On the other hand, when the mass point X located at 0" or 180@ is displaced in the radial direction with a width x1 due to the elliptical displacement in the Oo and 180" directions, the above stationary points are 45", 135", 2
Circumferential displacement j1 occurs at mass point j at 25" and 315", and due to elliptical displacement in the 90@ and 270" directions, 9
When the mass point y located at 0" or 2700 is displaced in the radial direction with a width y1, a circumferential displacement j2 occurs at the mass point j, which is the stationary point. Then, X and y (which are the maximum points of radial displacement) 0", 90°, 180°, 270') and the maximum circumferential displacement point (45", 135", 225")
315”) and each mass point k (e.g. 22.5”)
67.5゜112.5"157.5" 2
02.5”247, 5° 292.5° 337.5°
), the combined radial and circumferential displacement is 1
and 2 occur, and when a cylindrical rotor is brought into contact with this combined displacement point k in the radial and circumferential directions, this rotor will move when the mass point k is displaced radially outward at 1. It comes to rotate in the direction that corresponds to the circumferential displacement j1 of.
第５図（Ａ）及び（Ｂ）はそれぞれ上記振動円筒体１１
の楕円変位に伴う径方向変位及び周方向変位の分布状態
を示すもので、径方向変位は振動円筒体１１の楕円変位
に対応して０”、９０゜１８０° ２７０’方向で最大
になり、４５゜１３５° ２２５° ３１５°方向で“
０″になるのに対し、周方向変位は、上記径方向変位が
“０″になる振動円筒体１１の４５”、１３５”２２５
° ３１５’方向で最大になり、上記径方向変位が最大
になる０’ 、９０’ 、１８０’２７０’方向で“０
″になる。FIGS. 5(A) and 5(B) respectively show the vibrating cylindrical body 11.
This shows the distribution state of the radial displacement and circumferential displacement accompanying the elliptical displacement of the vibrating cylindrical body 11. The radial displacement is maximum in the 0", 90°, 180°, and 270' directions, corresponding to the elliptical displacement of the vibrating cylindrical body 11. 45°135° 225° 315°
0'', while the circumferential displacement is 45'', 135''225 of the vibrating cylindrical body 11 where the radial displacement is 0''.
° It is maximum in the 315' direction, and "0" in the 0', 90', 180' and 270' directions, where the above radial displacement is maximum.
"become.
すなわち、圧電アクチュエータ１２Ａ、１２Ｂにそれぞ
れ逆位相の交流電圧を印加して高周期の交互伸縮運動を
発生させ、振動円筒体１１に垂直方向に長径を有する楕
円変位と水平方向に長径を有する楕円変位とを真円状態
を経て連続的に生じさせると、０＠〜４５° ４５°〜
９０° ・・・２７０°〜３１５°、３１５°〜０°そ
れぞれの間の円弧には、何れもその中間点を最大にした
径方向及び周方向の組合わせ変位が生じるようになる。That is, alternating current voltages with opposite phases are applied to the piezoelectric actuators 12A and 12B, respectively, to generate high-frequency alternating expansion and contraction movements, and the vibrating cylindrical body 11 is subjected to an elliptical displacement having a major axis in the vertical direction and an elliptical displacement having a major axis in the horizontal direction. If these are caused continuously through a perfect circle state, 0 @ ~ 45° 45° ~
In each of the arcs between 90°, 270° and 315°, and between 315° and 0°, a combined displacement in the radial direction and the circumferential direction occurs, with the maximum at the intermediate point.
一方、第６図（Ａ）〜（Ｃ）はそれぞれ上記振動円筒体
１１の全体に生じる楕円変位を拡大して示すもので、圧
電アクチュエータ１２を振動円筒体１１の長手方向の略
中心に配設した場合、垂直方向（０”−１８０＠方向）
及び水平方向（９０’−２７０＠方向）の楕円変位共、
振動円筒体１１の両端に近い程大きくなることが実験よ
り得られた。つまり、上記振動円筒体１１では、その両
端円弧上の２２．５°の質点ｋから４５″毎に径及び周
方向組合わせの最大変位が得られることになる。On the other hand, FIGS. 6(A) to 6(C) respectively show enlarged elliptical displacements occurring in the entire vibrating cylindrical body 11, in which the piezoelectric actuator 12 is arranged approximately at the longitudinal center of the vibrating cylindrical body 11. Vertical direction (0”-180@direction)
and elliptical displacement in the horizontal direction (90'-270@ direction),
Experiments have shown that the closer to both ends of the vibrating cylindrical body 11 the larger the size becomes. In other words, in the vibrating cylindrical body 11, the maximum combined displacement in the radial and circumferential directions is obtained every 45'' from the mass point k at 22.5° on the arc at both ends.
したがって、第７図に示すように、上記振動円筒体１１
の２２．５°位置から４５°毎に、矢印Ｐで示すように
回転子１５ａ、１５ｂ、・・・を押圧当接させることで
、それぞれの回転子１５ａ。Therefore, as shown in FIG.
By pressing the rotors 15a, 15b, .
１５ｂ、・・・に対し上記径及び周方向の組合わせ変位
に対応する矢印ａ又はｂ方向の回転力を伝達することが
きる。15b, . . . can transmit a rotational force in the direction of arrow a or b corresponding to the combined displacement in the radial and circumferential directions.
これにより、上記超音波アクチュエータ１では、例えば
第８図に示すように、板状の移動体１６を振動円筒体１
１の２２．５＠位置から４５°毎に存在する径及び周方
向変位点の何れかに対し、矢印Ｐで示すように押圧当接
させることで、振動円筒体１１が外方変位する際の周方
向変位に対応する方向の直線運動ｉを得ることができる
。As a result, in the ultrasonic actuator 1, as shown in FIG.
By pressing and contacting any of the radial and circumferential displacement points that exist every 45 degrees from the 22.5@ position of 1 as shown by the arrow P, the vibration when the vibrating cylinder 11 is displaced outward is A linear motion i in a direction corresponding to the circumferential displacement can be obtained.
第９図は上記超音波アクチュエータ１を動力源とした搬
送装置によるプリント用紙５の搬送状態を示すもので、
すなわち、振動円筒体１１の２２．５＠位置に対応する
外周変位点と、この振動円筒体１１の変位点に矢印Ｐで
示すように押圧当接されたローラ４との間にプリント用
紙５を挿入することで、該プリント用紙５は、上記第８
図における直線運動ｉと同様の運動を受け、矢印Ｈで示
す方向に搬送されるようになる。FIG. 9 shows the conveyance state of the printing paper 5 by the conveyance device using the ultrasonic actuator 1 as the power source.
That is, the printing paper 5 is placed between the outer peripheral displacement point corresponding to the 22.5@ position of the vibrating cylinder 11 and the roller 4 which is pressed into contact with the displacement point of the vibrating cylinder 11 as shown by the arrow P. By inserting the print paper 5, the above-mentioned eighth
It undergoes a movement similar to the linear movement i in the figure, and is conveyed in the direction shown by arrow H.
したがって、上記構成の搬送装置によれば、超音波アク
チュエータ１の所定の外周変位点に対し、プリント用紙
５を押圧当接させるだけで、該プリント用紙５を容易に
搬送させることができる。この場合、振動円筒体１１と
圧電アクチュエータ１２Ａ、１２Ｂとにより構成される
超音波アクチュエータ１が、直接プリント用紙５に対し
て搬送力を伝えるので、モータを動力源とした従来の搬
送装置に較べて、部品点数及び組立て工数を大幅に削減
することが可能になり、プリンタ等における用紙搬送装
置を小型化することができる。Therefore, according to the conveyance device configured as described above, the print paper 5 can be easily conveyed simply by pressing the print paper 5 into contact with a predetermined outer peripheral displacement point of the ultrasonic actuator 1. In this case, the ultrasonic actuator 1 made up of the vibrating cylindrical body 11 and the piezoelectric actuators 12A and 12B directly transmits the conveying force to the print paper 5, which is more effective than a conventional conveying device using a motor as a power source. , it becomes possible to significantly reduce the number of parts and the number of assembly steps, and it is possible to downsize the paper conveyance device in a printer or the like.
尚、上記実施例では、プリント用紙５を超音波アクチュ
エータ１の外周変位点に抑圧させる手段としてローラ４
を用いたが、例えば第１０図で示すように、プリント用
紙５に対する摩擦係数が極めて小さい押圧部材６を用い
てもよい。In the above embodiment, the roller 4 is used as a means for suppressing the printing paper 5 at the outer peripheral displacement point of the ultrasonic actuator 1.
However, as shown in FIG. 10, for example, a pressing member 6 having an extremely small coefficient of friction with respect to the printing paper 5 may be used.
また、上記実施例では、２本の圧電アクチュエータ１２
Ａ、１２Ｂを使用して振動円筒体１１に楕円変位を生じ
させたが、その本数は何等制限されるものではない。Further, in the above embodiment, two piezoelectric actuators 12
A and 12B were used to cause elliptical displacement in the vibrating cylindrical body 11, but the number is not limited in any way.
［発明の効果］
以上のように本発明によれば、円柱状体と、この円柱状
体を間欠的に楕円形に変形させる円柱変形手段と、上記
円柱状体の外周面に非搬送物を当接させる搬送物当接手
段とを備え、上記円柱状体の間欠的楕円変形に伴いその
外周面に非搬送物が接して搬送されるよう構成したので
、モータによるギア等を介した搬送手段を利用すること
無く、容易にシート状あるいは板状搬送物の搬送を行な
うことが可能になる搬送装置を提供できる。[Effects of the Invention] As described above, according to the present invention, a cylindrical body, a cylindrical deforming means for intermittently deforming the cylindrical body into an ellipse shape, and a non-conveyed object on the outer peripheral surface of the cylindrical body are provided. Since the cylindrical body is configured to be conveyed in contact with the outer circumferential surface of the cylindrical body due to the intermittent elliptical deformation of the cylindrical body, the conveyance means via a motor-driven gear or the like is provided. It is possible to provide a conveyance device that can easily convey a sheet-like or plate-like conveyed object without using.
第１図は本発明の一実施例に係わる搬送装置の構成を示
す外観図、第２図（Ａ）〜（Ｃ）はそれぞれ上記搬送装
置に使用される超音波アクチュエータを示す外観図及び
側面図及びＡ−Ａ線断面図、第３図は上記超音波アクチ
ュエータにおける圧電アクチュエータを示す構成図、第
４図は上記超音波アクチュエータの振動円筒体に生じる
変位状態を示す図、第５図（Ａ）及び（Ｂ）はそれぞれ
上記超音波アクチュエータにおける振動円筒体の楕円変
位に伴う径方向変位及び周方向変位の分布状態を示す図
、第６図（Ａ）〜（Ｃ）はそれぞれ上記超音波アクチュ
エータにおける振動円筒体の全体に生じる楕円変位を拡
大して示す図、第７図は上記超音波アクチュエータによ
り得られる回転運動を示す図、第８図は上記超音波アク
チュエータにより得られる直線運動を示す図、第９図は
上記超音波アクチュエータを使用した搬送装置による用
紙搬送状態を示す図、第１０図は上記搬送装置の他の実
施例の構成を示す図である。
１・・・超音波アクチュエータ、２・・・基部、３ａ〜
３Ｃ・・・弾性部材、４・・・ローラ、５・・・プリン
ト用紙、６・・・押圧部材、１１・・・振動円筒体、１
２Ａ、１２Ｂ・・・圧電アクチュエータ、１２ａ。
１２ｂ、・・・圧電セラミック、１３ａ、１３ｂ、・・
・電極、１４・・・電源部、１５ａ、１５ｂ、・・・回
転子、１６・・・板状移動体。FIG. 1 is an external view showing the configuration of a conveyance device according to an embodiment of the present invention, and FIGS. 2 (A) to (C) are external views and side views showing an ultrasonic actuator used in the above-mentioned conveyance device, respectively. 3 is a configuration diagram showing a piezoelectric actuator in the ultrasonic actuator, FIG. 4 is a diagram showing a displacement state generated in the vibrating cylindrical body of the ultrasonic actuator, and FIG. 5 (A) and (B) are diagrams showing the distribution states of radial displacement and circumferential displacement accompanying elliptical displacement of the vibrating cylindrical body in the ultrasonic actuator, respectively, and FIGS. FIG. 7 is a diagram showing an enlarged elliptical displacement occurring in the entire vibrating cylindrical body, FIG. 7 is a diagram showing rotational motion obtained by the ultrasonic actuator, and FIG. 8 is a diagram showing linear motion obtained by the ultrasonic actuator. FIG. 9 is a diagram showing a sheet conveyance state by a conveyance device using the above-mentioned ultrasonic actuator, and FIG. 10 is a diagram showing the configuration of another embodiment of the above-mentioned conveyance device. 1... Ultrasonic actuator, 2... Base, 3a~
3C... Elastic member, 4... Roller, 5... Print paper, 6... Pressing member, 11... Vibrating cylindrical body, 1
2A, 12B...Piezoelectric actuator, 12a. 12b,... piezoelectric ceramic, 13a, 13b,...
- Electrode, 14... Power source section, 15a, 15b,... Rotor, 16... Plate-shaped moving body.
Claims (1)
段と、 上記円柱状体の外周面に非搬送物を当接させる搬送物当
接手段とを具備し、 上記円柱状体の間欠的楕円変形に伴いその外周面に非搬
送物が接して搬送されることを特徴とする搬送装置。[Scope of Claims] A cylindrical body, cylindrical deformation means for intermittently deforming the cylindrical body into an elliptical shape, and conveyed object contact means for bringing a non-conveyed object into contact with the outer peripheral surface of the cylindrical body. A conveying device comprising: a non-conveyed object is conveyed in contact with the outer circumferential surface of the cylindrical body as the columnar body undergoes intermittent elliptical deformation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1286151A JP2847817B2 (en) | 1989-11-02 | 1989-11-02 | Transfer device |
| US07/605,071 US5199701A (en) | 1988-11-25 | 1990-10-29 | Carrier apparatus using ultrasonic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1286151A JP2847817B2 (en) | 1989-11-02 | 1989-11-02 | Transfer device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03147652A true JPH03147652A (en) | 1991-06-24 |
| JP2847817B2 JP2847817B2 (en) | 1999-01-20 |
Family
ID=17700599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1286151A Expired - Lifetime JP2847817B2 (en) | 1988-11-25 | 1989-11-02 | Transfer device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2847817B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6277071A (en) * | 1985-09-26 | 1987-04-09 | Sony Corp | Linear elastic wave motor |
| JPH02209340A (en) * | 1989-02-08 | 1990-08-20 | Matsushita Electric Ind Co Ltd | Paper feeder |
-
1989
- 1989-11-02 JP JP1286151A patent/JP2847817B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6277071A (en) * | 1985-09-26 | 1987-04-09 | Sony Corp | Linear elastic wave motor |
| JPH02209340A (en) * | 1989-02-08 | 1990-08-20 | Matsushita Electric Ind Co Ltd | Paper feeder |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2847817B2 (en) | 1999-01-20 |
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