JPH02209339A - Paper feeder - Google Patents
Paper feederInfo
- Publication number
- JPH02209339A JPH02209339A JP1029100A JP2910089A JPH02209339A JP H02209339 A JPH02209339 A JP H02209339A JP 1029100 A JP1029100 A JP 1029100A JP 2910089 A JP2910089 A JP 2910089A JP H02209339 A JPH02209339 A JP H02209339A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- vibrator
- vibrating body
- piezoelectric
- prismatic
- 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.)
- Pending
Links
- 230000005684 electric field Effects 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/008—Feeding articles separated from piles; Feeding articles to machines using vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Handling Of Cut Paper (AREA)
- Jigging Conveyors (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】
産業上の利用分野
本発明は圧電体による弾性振動を用いて駆動力を発生す
る紙送り装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a paper feeding device that generates driving force using elastic vibrations caused by a piezoelectric body.
従来の技術
近年、圧電セラミック等の圧電体1:より構成した振動
体に弾性振動を励振し、これを駆動力とした紙送り装置
が注目されている。2. Description of the Related Art In recent years, paper feeding devices have attracted attention in which elastic vibrations are excited in a vibrating body made of a piezoelectric body 1 such as a piezoelectric ceramic, and this vibration is used as a driving force.
以下、図面を参照しながら紙送り装置の従来技術につい
て説明を行う。Hereinafter, the conventional technology of a paper feeding device will be explained with reference to the drawings.
従来の紙送り装置は、金属などの平板形の弾性体に圧電
セラミック等の圧電体を貼り合わして振動体を構成し、
上記振動体に平板の共振周波数の等しい縦振動モードと
撓み振動モードを同時に励振して、平板上のある点に楕
円軌跡を作り、この楕円軌跡の頂点にてローラとで紙を
挟むようにして紙を送るものである。In conventional paper feeding devices, a vibrating body is constructed by bonding a piezoelectric material such as a piezoelectric ceramic to a flat elastic material such as metal.
A longitudinal vibration mode and a flexural vibration mode with equal resonance frequencies of the flat plate are simultaneously excited in the vibrating body to create an elliptical locus at a certain point on the flat plate, and the paper is held between the rollers at the apex of the elliptical locus. It is something to send.
第4図は、平板に励損する共振周波数の等しい縦振動モ
ードと撓み振動モードの変位分布図である。同図(a)
は平板振動体1の縦振動モードの変位分布2であり、同
図(b)は平板振動体1の撓み振動モードの変位分布3
である。同図中の矢印は、ある時間における振動の変位
の方向を示している。縦振動は横方向の動きを、撓み振
動は縦方向の動きを作る。従って、同図中の斜線部分で
は、縦振動モードによる横方向成分の大きい楕円軌跡が
得られる。FIG. 4 is a displacement distribution diagram of the longitudinal vibration mode and the bending vibration mode, which have the same resonance frequency and are excited in the flat plate. Figure (a)
is the displacement distribution 2 of the longitudinal vibration mode of the flat plate vibrating body 1, and (b) is the displacement distribution 3 of the bending vibration mode of the flat plate vibrating body 1.
It is. The arrows in the figure indicate the direction of vibration displacement at a certain time. Vertical vibration creates horizontal movement, and flexural vibration creates vertical movement. Therefore, in the shaded area in the figure, an elliptical locus with a large lateral component due to the longitudinal vibration mode is obtained.
第5図は第1図に示した振動モードを使った紙送り装置
の概観図であり、同図(a)は電荷分布を示し、(b)
は電荷に対応した圧電体位置と紙送り装置の構造を示し
ている。縦振動モードの電荷分布に対応して圧電体8を
弾性平板6に貼り付け、撓み振動モードの電荷分布5に
対応して圧電体7a、7b、7c、7dを弾性平板6に
貼り付けて振動体を構成している。そして、第4図の横
方向成分の大きい楕円軌跡の得られる斜線部分で、それ
ぞれローラ9a、9bで紙10を加圧して挟み込む。圧
電体7.8に電界を印加することにより、撮動体に撮動
を励振して紙10を移動させる。Figure 5 is an overview of the paper feeding device using the vibration mode shown in Figure 1, with (a) showing the charge distribution and (b)
shows the piezoelectric body position corresponding to the charge and the structure of the paper feeding device. The piezoelectric body 8 is attached to the elastic flat plate 6 corresponding to the charge distribution in the longitudinal vibration mode, and the piezoelectric bodies 7a, 7b, 7c, and 7d are attached to the elastic flat plate 6 in accordance with the charge distribution 5 in the flexural vibration mode to vibrate. It makes up the body. Then, the paper 10 is pressed and pinched by the rollers 9a and 9b, respectively, at the diagonally shaded portions where an elliptical locus with a large lateral component in FIG. 4 is obtained. By applying an electric field to the piezoelectric body 7.8, the photographing body is excited to move the paper 10.
発明が解決しようとする課題
以上、説明した従来の紙送り装置は、小さな質量を持つ
紙を移動するために、大きな質量を持つ平板を振動させ
なければならない。また縦振動モードと撓み振動モード
という異なった2つの振動モードを使っているため、2
つ振動モードの共振周波数を一致させに(<、そのため
に2つの振動のうち一方の振動の振幅が小さくなる。ま
た振動の節が振動体の中央部にしかないので位置固定も
困難である。従って、効率が低く、また寸法・重量が太
き(なるという課題があった。Problems to be Solved by the Invention As described above, the conventional paper feeding device described above must vibrate a flat plate having a large mass in order to move paper having a small mass. Also, since it uses two different vibration modes: longitudinal vibration mode and flexural vibration mode,
In order to match the resonance frequencies of the two vibration modes, the amplitude of one of the two vibrations becomes smaller.Also, since the vibration node is located in the center of the vibrating body, it is difficult to fix the position. However, there were problems with low efficiency and large dimensions and weight.
課題を解決するための手段
本発明は、角柱形の弾性体の相隣接する主面に圧電体を
接着して振動体を構成し、上記圧電体に電界を印加する
ことにより、上記振動体に空間的に振動面が直交する2
つの高次の撓み振動を励振、し、上記高次の撓み振動の
少なくても2つの節を介して撮動体の位置固定を行ない
、上記高次の撓み振動の少なくても2つの腹の位置に突
起を構成し、上記突起と平板とで紙を加圧して挾み込み
、上記紙を移動させる構成
としたものである。Means for Solving the Problems The present invention configures a vibrating body by bonding piezoelectric bodies to adjacent main surfaces of a prismatic elastic body, and applies an electric field to the piezoelectric body to cause the vibrating body to 2 where the vibration planes are spatially orthogonal
excite two high-order bending vibrations, fix the position of the object to be photographed via at least two nodes of the high-order bending vibrations, and fix the position of the object to be photographed through at least two nodes of the high-order bending vibrations; A protrusion is formed on the protrusion, and the paper is pressurized and sandwiched between the protrusion and the flat plate to move the paper.
作用
振動体を従来の平板から角柱にすることにより、形状と
重量を小さ(し、撮動モードを縦振動モードと撓み振動
モードから2つの同モードの振動を採用することにより
、2つの振動の共振周波数を一致させやすくなり、その
結果効率良く振動が励振でき、また振動の節が2つの振
動で一致するので、振動体の位置固定が簡単になる。By changing the active vibrating body from a conventional flat plate to a prism, the shape and weight are reduced (and by adopting the same mode of vibration from the longitudinal vibration mode and the flexural vibration mode as the imaging mode, the two vibration modes are reduced). It becomes easier to match the resonant frequencies, and as a result, vibrations can be excited efficiently, and since the nodes of the two vibrations match, it becomes easier to fix the position of the vibrating body.
実施例
以下、図面に従って本発明の一実施例について詳細な説
明を行う。EXAMPLE Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
第1図は1本発明の1実施例の撮動体の構成図である。FIG. 1 is a configuration diagram of a photographing object according to an embodiment of the present invention.
11は金属などで作られた角柱弾性体、12a、12b
、12c、12d、12e、12fは高次の撓み撮動を
励振するために角柱弾性体11に固着された圧電体群、
また13a、13b、13c、13d、13e、13f
は上記の高次の撓み撮動に直交する高次の撓み撮動を励
振するために角柱弾性体11に固着された圧電体群であ
り、これらの圧電体は厚さ方向に分極されている。14
a、14bは円柱突起、15a、15k)は支持溝であ
り、振動体16を構成している。同図中の圧!体群に付
けられた正負の符号は、圧電体の分極の方向を示してい
る。11 is a prismatic elastic body made of metal etc., 12a, 12b
, 12c, 12d, 12e, and 12f are piezoelectric bodies fixed to the prismatic elastic body 11 in order to excite high-order deflection imaging;
Also 13a, 13b, 13c, 13d, 13e, 13f
is a group of piezoelectric bodies fixed to the prismatic elastic body 11 in order to excite high-order deflection motion perpendicular to the above-mentioned high-order deflection motion, and these piezoelectric bodies are polarized in the thickness direction. . 14
A and 14b are cylindrical projections, 15a and 15k) are support grooves, and constitute a vibrating body 16. The pressure in the same figure! The positive and negative signs attached to the body groups indicate the direction of polarization of the piezoelectric body.
第2図は、第1図に示した振動体に励振される高次の撓
み振動の変位分布である。同図に示した変位分布は、圧
電体群12または13に電界を印加して駆動した時の変
位分布で、両方の圧電体群を駆動すれば、図の変位分布
と直交した変位分布が同時に励振できる。支持溝15a
・15bは上記撓み振動の節位置に対応して設置され、
円柱突起14a・14bは撓み振動の腹位置に対応して
設置される。圧電体群12・13を同時に、90度位相
の異なる2つの電界で駆動すれば、互いに直交した撓み
振動によって、円柱突起14a・14bは角柱振動体1
6に垂直な面内でほぼ円軌跡を描いて振動する。FIG. 2 shows a displacement distribution of high-order bending vibration excited in the vibrating body shown in FIG. 1. FIG. The displacement distribution shown in the figure is the displacement distribution when an electric field is applied to and driven the piezoelectric group 12 or 13.If both piezoelectric groups are driven, the displacement distribution orthogonal to the displacement distribution shown in the figure can be obtained simultaneously. Can be excited. Support groove 15a
・15b is installed corresponding to the nodal position of the above-mentioned bending vibration,
The cylindrical projections 14a and 14b are installed corresponding to the antinode position of the bending vibration. If the piezoelectric body groups 12 and 13 are simultaneously driven by two electric fields with a phase difference of 90 degrees, the cylindrical protrusions 14a and 14b will move into the prismatic vibrating body 1 due to mutually orthogonal bending vibrations.
It vibrates in a nearly circular locus in a plane perpendicular to 6.
第3図は、以上述べたような撮動体を使用した紙送り装
置の構造例である。振動体16は支持溝15a・15b
を介して、支持台17によって位置固定される。円柱突
起14a・14bと支持台17の上に紙18が加圧して
設置され、圧電体群12・13に振動体16の共振周波
数近傍の交流電界を印加することにより、円柱突起14
a・14bは角柱振動体16に垂直な面内でほぼ円軌跡
を描いて振動するので、紙18は図中の矢印の方向に移
動する。FIG. 3 shows an example of the structure of a paper feeding device using the above-mentioned moving body. The vibrating body 16 has support grooves 15a and 15b.
The position is fixed by the support stand 17 via. Paper 18 is placed under pressure on the cylindrical projections 14a and 14b and the support base 17, and by applying an alternating current electric field near the resonance frequency of the vibrating body 16 to the piezoelectric body groups 12 and 13, the cylindrical projection 14
Since a and 14b vibrate in a plane perpendicular to the prismatic vibrating body 16, drawing a substantially circular locus, the paper 18 moves in the direction of the arrow in the figure.
尚、本実施例では、以上に示したような圧電体群を用い
たが、12a〜12fまたは13a〜13fの圧電体群
のうち任意の圧電体を間引いても良い。また、本実施例
では、振動モードとして両端自由の角柱の高次の撓み撮
動を用いたが、もっと高次のモードを使用することもで
き、また両端固定の高次の撓み撮動を用いても同様に紙
送り、装置を構成することができる。In this embodiment, the piezoelectric body group shown above is used, but any piezoelectric body from the piezoelectric body groups 12a to 12f or 13a to 13f may be thinned out. In addition, in this example, high-order deflection imaging of a prism with both ends free is used as the vibration mode, but a higher-order mode can also be used, or high-order deflection imaging with both ends fixed is used. The paper feeding device can also be configured in the same way.
発明の効果
以上、説明したように、本発明によれば、簡単な構造に
よって、寸法の小さな、重さの軽い、しかも効率の高い
紙送り装置を提供できる。Effects of the Invention As described above, according to the present invention, it is possible to provide a paper feeding device with a simple structure, small size, light weight, and high efficiency.
第1図は本発明の1実施例の振動体の概観図、第2図は
第1図の振動体の高次の撓み振動の変位分布図、第3図
は第1図の振動体を使用した紙送り装置の1実施例の概
観図、第4図は従来の紙送り装置の振動体の縦振動モー
ドと撓み振動モードの変位分布図、第5図は第1図に示
した振動モードを使った紙送り装置の概観図である。
11・・・・・・角柱弾性体、12a・12b・12c
・12d・12e・12f・・・・・・圧電体群、13
a・13b・13C・13d・13e・13f・・・・
・・圧電体群、14a・14b・・・・・・円柱突起、
15a・15b・・・・・・支持溝、16・・・・・・
振動体、17・・・・・・支持台、18・・・・・・紙
。
代理人の氏名 弁理士 粟野重孝 ほか1名図
43 図
第4図
(a)
図
!Fig. 1 is an overview of a vibrating body according to an embodiment of the present invention, Fig. 2 is a displacement distribution diagram of high-order bending vibration of the vibrating body of Fig. 1, and Fig. 3 is a diagram using the vibrating body of Fig. 1. Fig. 4 is a diagram showing the displacement distribution of the longitudinal vibration mode and bending vibration mode of the vibrating body of the conventional paper feeding device, and Fig. 5 shows the vibration mode shown in Fig. 1. FIG. 2 is an overview diagram of the paper feeding device used. 11...Prismatic elastic body, 12a, 12b, 12c
・12d・12e・12f・・・Piezoelectric body group, 13
a, 13b, 13C, 13d, 13e, 13f...
...Piezoelectric body group, 14a, 14b...Cylindrical projection,
15a/15b...Support groove, 16...
Vibrating body, 17... Support stand, 18... Paper. Name of agent: Patent attorney Shigetaka Awano and one other figure 43 Figure 4 (a) Figure!
Claims (1)
動体を構成し、上記圧電体に電界を印加することにより
、上記振動体に空間的に振動面が直交する2つの高次の
撓み振動を励振し、上記高次の撓み振動の少なくても2
つの節を介して振動体を位置固定し、上記高次の撓み振
動の少なくても2つの腹の位置に突起を構成し、上記突
起と平板とで紙を加圧して挟み込み、上記紙を移動する
ことを特徴とする紙送り装置。A vibrating body is constructed by bonding a piezoelectric body to adjacent main surfaces of a prismatic elastic body, and by applying an electric field to the piezoelectric body, two heights whose vibration planes are spatially perpendicular to the vibrating body are created. Excite the following flexural vibrations, and at least 2 of the above higher-order flexural vibrations.
The vibrating body is fixed in position via two nodes, protrusions are formed at at least two antinode positions of the high-order bending vibration, and the paper is pressurized and sandwiched between the protrusions and the flat plate, and the paper is moved. A paper feeding device characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1029100A JPH02209339A (en) | 1989-02-08 | 1989-02-08 | Paper feeder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1029100A JPH02209339A (en) | 1989-02-08 | 1989-02-08 | Paper feeder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02209339A true JPH02209339A (en) | 1990-08-20 |
Family
ID=12266927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1029100A Pending JPH02209339A (en) | 1989-02-08 | 1989-02-08 | Paper feeder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02209339A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0682407A1 (en) * | 1994-05-12 | 1995-11-15 | Murata Manufacturing Co., Ltd. | Piezoelectric vibrator |
CN102347708A (en) * | 2010-07-28 | 2012-02-08 | 三星电机株式会社 | Vibration generator and electronic device including the same |
-
1989
- 1989-02-08 JP JP1029100A patent/JPH02209339A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0682407A1 (en) * | 1994-05-12 | 1995-11-15 | Murata Manufacturing Co., Ltd. | Piezoelectric vibrator |
CN102347708A (en) * | 2010-07-28 | 2012-02-08 | 三星电机株式会社 | Vibration generator and electronic device including the same |
US8917009B2 (en) | 2010-07-28 | 2014-12-23 | Samsung Electro-Mechanics Co., Ltd. | Vibration generator and electronic device including the same |
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