JPH0542969Y2 - - Google Patents
Info
- Publication number
- JPH0542969Y2 JPH0542969Y2 JP3216488U JP3216488U JPH0542969Y2 JP H0542969 Y2 JPH0542969 Y2 JP H0542969Y2 JP 3216488 U JP3216488 U JP 3216488U JP 3216488 U JP3216488 U JP 3216488U JP H0542969 Y2 JPH0542969 Y2 JP H0542969Y2
- Authority
- JP
- Japan
- Prior art keywords
- leaf spring
- flexible rod
- flexible
- base
- conveyance
- 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.)
- Expired - Lifetime
Links
- 238000006073 displacement reaction Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Landscapes
- Jigging Conveyors (AREA)
- Feeding Of Articles To Conveyors (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は、電歪素子を励振することにより、搬
送台を振動させ、小型の物品を一方向から他方向
に移送する曲線型もしくは直線型のパーツフイー
ダに関する。[Detailed description of the invention] <Industrial application field> The present invention is a curved or linear type that transports small objects from one direction to another by vibrating a conveyor table by exciting an electrostrictive element. Regarding the parts feeder.
〈従来技術〉
曲線型パーツフイーダを例にとつて説明する
と、その従来態様は第8図に示すように、電極板
を兼ねる板ばねbの主表面に電歪素子cを貼着し
てなる複数の駆動体aを、搬送台dと基台eの間
に、ほぼ同一円周上に配置し、夫々の上下端を各
台に連結して、傾斜状に差渡し、各駆動体aの電
歪素子cを励振することにより搬送台dを円周方
向に振動させ、搬送物を回転方向に移送するよう
になつている。<Prior Art> Taking a curved parts feeder as an example, its conventional form, as shown in FIG. The driving bodies a are arranged on approximately the same circumference between the conveyor table d and the base e, and the upper and lower ends of each are connected to each table, and the driving bodies a are passed in an inclined manner. By exciting the element c, the conveyor table d is vibrated in the circumferential direction, and the object to be conveyed is transferred in the rotational direction.
〈考案が解決しようとする問題点〉
上記のように曲線型パーツフイーダにあつて
は、板ばねbはその少なくとも一面に一枚の電歪
素子cを貼着しており、その伸縮により、板ばね
bは湾曲変位を生ずる。ところがこの板ばねbは
径方向に配設されているため、搬送台dの回転に
伴い、その内側と、外側の移動量が異なり、該板
ばねbに捩り方向の力が働く。このため、この板
ばねbの上端部が搬送台dに直接固定されている
と、前記湾曲変位が拘束され、搬送台dを振動さ
せることができなくなる。<Problems to be solved by the invention> As mentioned above, in the case of the curved parts feeder, the leaf spring b has one electrostrictive element c attached to at least one surface thereof, and as the leaf spring b expands and contracts, the leaf spring b produces a curved displacement. However, since this leaf spring b is disposed in the radial direction, the amount of movement on the inside and outside thereof is different as the conveyance table d rotates, and a force in the torsional direction is applied to the leaf spring b. For this reason, if the upper end of the leaf spring b is directly fixed to the carrier d, the bending displacement will be restricted and the carrier d will not be able to vibrate.
そこで従来は、第9図に示すように、板ばねb
と、搬送台dとを切欠き部gが形成された接続ば
ねfで連結するようにしていた。 Therefore, conventionally, as shown in FIG.
and the conveyance table d are connected by a connection spring f having a notch g formed therein.
ところで、かかる構成では、接続ばねfが、第
8図矢線方向の駆動体aの振動に伴い、負荷をう
けて湾動し、このため該方向の変位が逃げて、力
の浪費を生ずると共に、切欠き部gはその捩れを
許容する一方、金属疲労により切断を生じ易い。 By the way, in such a configuration, the connection spring f bends under load as the driving body a vibrates in the direction of the arrow in FIG. Although the notch g allows for twisting, it is likely to break due to metal fatigue.
また、板ばねbの分だけ、搬送台dが高くな
り、これに伴つて、共振周波数が低くなり、搬送
速度が低下する。 Further, the conveyance platform d becomes higher by the amount of the leaf spring b, and accordingly, the resonant frequency becomes lower and the conveyance speed decreases.
さらに、板ばねbを搬送台dの取付面hに面接
触しなければならないから、該取付面hを平滑と
するためにフライス加工を要し、製造コストが増
加する等の欠点があつた。 Furthermore, since the leaf spring b has to come into surface contact with the mounting surface h of the conveyor table d, milling is required to smooth the mounting surface h, resulting in disadvantages such as an increase in manufacturing costs.
本考案は、前記従来欠点の無い連結機構を備え
たパーツフイーダの提供を目的とするものであ
る。 The object of the present invention is to provide a parts feeder equipped with a connecting mechanism that does not have the above-mentioned drawbacks.
〈問題点を解決するための手段〉
本考案は、板ばねの上下端のすくなくとも一方
に、軸方向で剛性を有する可撓性棒体を垂直状に
起立して支持し、該可撓性棒体の突出端を、搬送
台または基台の取付部に固定することにより、板
ばねの端部を、前記可撓性棒体を介して前記取付
け部に対して間隔をおいて連結したことを特徴と
するものである。<Means for solving the problem> The present invention supports a flexible rod having rigidity in the axial direction vertically on at least one of the upper and lower ends of a leaf spring, and supports the flexible rod in a vertical manner. By fixing the protruding end of the body to the mounting part of the carrier or the base, the end of the leaf spring is connected to the mounting part through the flexible rod at a distance. This is a characteristic feature.
ここで、軸方向で剛性を有する可撓性棒体とし
ては、金属棒又はプラスチツク棒等の他に、金属
片を密に巻回して棒状としたもの等がある。 Here, as the flexible rod having rigidity in the axial direction, there are metal rods, plastic rods, and the like, as well as rod-shaped rods made by closely winding metal pieces.
〈作用〉
板ばねは、その当該端で可撓性棒体を介して連
結されている。このため、搬送台の径方向の移送
差により、板ばねとの間で相対変位が発生して
も、該可撓性棒体の曲げ変形により吸収され、板
ばねに捩り方向の歪が生じない。<Operation> The leaf springs are connected at their respective ends via flexible rods. Therefore, even if a relative displacement occurs between the plate spring and the plate spring due to the radial transfer difference of the conveyor table, it is absorbed by the bending deformation of the flexible rod, and no torsional strain occurs in the plate spring. .
また、板ばねの揺動に伴う可撓性棒体の軸方向
に沿つた送り変位は、該棒体が、該軸方向に剛性
を有するため、その変位が逃げることなく搬送台
側に伝達される。 In addition, the feeding displacement along the axial direction of the flexible rod due to the swinging of the leaf spring is transmitted to the conveyance table side without escaping because the rod has rigidity in the axial direction. Ru.
〈実施例〉
本考案を適用した曲線型パーツフイーダの一実
施例を添付図面に従つて説明する。<Example> An example of a curved parts feeder to which the present invention is applied will be described with reference to the accompanying drawings.
第1,2図において、基台1上には、その水平
上面に搬送物を乗載する円形皿状の搬送台2が配
設されている。 In FIGS. 1 and 2, a circular dish-shaped carrier 2 is disposed on a base 1 on which an object to be transported is placed on its horizontal upper surface.
前記基台1の上面と搬送台2の裏面には、同一
径方向位置に、かつ等角度間隔に設けられた各四
本の連結片4,5が設けられている。この上下で
対向する連結片4と連結片5は、その延長線が相
互に一致するように傾斜し、四対の上下連結片
4,5間に、夫々駆動体6が差渡される。 Four connecting pieces 4 and 5 are provided on the top surface of the base 1 and on the back surface of the conveyance table 2 at the same radial position and at equal angular intervals. The vertically opposing connecting pieces 4 and 5 are inclined so that their extension lines coincide with each other, and a driving body 6 is passed between the four pairs of upper and lower connecting pieces 4 and 5, respectively.
前記駆動体6は、第3図で拡大して示すよう
に、板ばね7の表裏面に夫々径方向に二枚の電歪
素子8a,8bを貼着したものである。 As shown in an enlarged view in FIG. 3, the driving body 6 has two electrostrictive elements 8a and 8b radially attached to the front and back surfaces of a leaf spring 7, respectively.
前記電歪素子8a,8bは、逆方向または順方
向に、常法により分極されており、板ばね7を電
極板として兼用している。そして、その外側電極
は交流電源に直列または並列接続され、該電源に
よる電圧印加による各電歪素子8a,8bを夫々
伸縮して、板ばね7の湾曲を生ずる。 The electrostrictive elements 8a, 8b are polarized in the opposite direction or in the forward direction by a conventional method, and the leaf spring 7 also serves as an electrode plate. The outer electrodes are connected in series or in parallel to an AC power source, and each electrostrictive element 8a, 8b is expanded or contracted by voltage application from the power source, thereby causing the leaf spring 7 to curve.
尚、交流電源に換えて、スイツチング機構を設
けることにより直流電源を使用することもでき
る。 Note that instead of the AC power source, a DC power source can also be used by providing a switching mechanism.
この駆動体6にあつて、第4図に示すように、
板ばね7の下端部と、連結片4の取付面4aとは
左右二個の連結螺子10,10により連結固定さ
れる。 Regarding this driving body 6, as shown in FIG.
The lower end of the leaf spring 7 and the mounting surface 4a of the connecting piece 4 are connected and fixed by two left and right connecting screws 10, 10.
また、板ばね7の上端部には透孔11が形成さ
れ、該透孔11に両端に螺子部13a,14aが
形成された金属材から成る可撓性棒体12aが遊
挿され、板ばね7を挟んで螺子部13aに螺着し
たナツト15a,15bを緊締することにより、
該棒体12aは、板ばね7に対して垂直状に起立
して固定されている。そしてその突出端の螺子部
13bを連結片5の取付面5aに形成した螺子孔
16に螺合し、これにより、該板ばね7の上端
を、搬送台2の前記連結片5に対して、可撓性棒
体12aを介して間隔をおいて連結している。 Further, a through hole 11 is formed at the upper end of the leaf spring 7, and a flexible rod 12a made of a metal material and having threaded portions 13a and 14a formed at both ends is loosely inserted into the through hole 11. By tightening the nuts 15a and 15b screwed onto the threaded portion 13a with 7 in between,
The rod 12a is fixed to the leaf spring 7 so as to stand upright. Then, the threaded portion 13b of the protruding end is screwed into the threaded hole 16 formed in the mounting surface 5a of the connecting piece 5, and thereby the upper end of the leaf spring 7 is connected to the connecting piece 5 of the conveyor table 2. They are connected at intervals via a flexible rod 12a.
前記可撓性棒体12aは、軸方向に剛性を有す
ると共に、曲げ変位を生じることができ、本考案
の可撓性棒体の条件を備える。 The flexible rod 12a has rigidity in the axial direction and is capable of bending, meeting the requirements of the flexible rod of the present invention.
而て、駆動体6は、基台1、搬送台2に対し
て、連結片4,5の角度に沿つた傾斜を付与さ
れ、その幅方向を搬送台2の径方向と一致するよ
うに配設される。 The drive body 6 is inclined with respect to the base 1 and the conveyance table 2 along the angle of the connecting pieces 4 and 5, and arranged so that its width direction coincides with the radial direction of the conveyance table 2. will be established.
かかる構成にあつて、電圧印加により各電歪素
子8a,8bが夫々伸縮すると、板ばね7の湾曲
により搬送台2の回転を生ずる。このとき板ばね
7は径方向に配設されているが、可撓性棒体12
aの弾性変形により微傾動することにより板ばね
7自体に歪を生ずることなく、捩り方向の力が吸
収される。一方、可撓性棒体12aは、その板ば
ね7上端の揺動方向(可撓性棒体12aの軸方
向)には変形し難く、このため、該揺動に伴う変
位を、搬送台2に対して、良好に伝達し得ること
となる。 In this configuration, when each electrostrictive element 8a, 8b expands or contracts by applying a voltage, the conveying table 2 rotates due to the bending of the leaf spring 7. At this time, the leaf spring 7 is arranged in the radial direction, but the flexible rod 12
Due to the slight tilting caused by the elastic deformation of a, the force in the torsional direction is absorbed without causing distortion in the leaf spring 7 itself. On the other hand, the flexible rod 12a is difficult to deform in the direction in which the upper end of the leaf spring 7 swings (in the axial direction of the flexible rod 12a). This means that good transmission can be achieved.
第5図は、変形例の可撓性棒体12bを示し、
その中央部に縮径部20を形成し、かつ両端に螺
子部13b,14bを形成したものである。すな
わち前記実施例の可撓性棒体12aは、同径であ
るため、その弾性変形時に、両端の固定基部に応
力集中を生じて、折損することが予想される。と
ころが、かかる構成にあつては、前記搬送台2の
回動に伴つて中央の縮径部20が無理なく撓ん
で、前記した取り付け基部への応力集中が緩和さ
れる。従つて、金属疲労が軽減され、耐用寿命が
伸びる利点を有する。 FIG. 5 shows a modified flexible rod 12b,
A reduced diameter portion 20 is formed at the center thereof, and screw portions 13b and 14b are formed at both ends. That is, since the flexible rods 12a of the above embodiment have the same diameter, it is expected that stress concentration will occur at the fixed bases at both ends when the rods are elastically deformed, leading to breakage. However, in such a configuration, the central diameter-reduced portion 20 is naturally bent as the conveyance table 2 rotates, and the stress concentration on the mounting base is alleviated. Therefore, it has the advantage of reducing metal fatigue and extending its service life.
前記した可撓性棒体12a,12bは、プラス
チツク材料により構成しても良い。 The flexible rods 12a, 12b described above may be made of plastic material.
第6図は、線材21を密に巻回して構成した可
撓性棒体12cを示し、曲げ方向の変形に対して
は追従性が良く、軸方向への力の伝達は、各線材
21に間隙がないから変形することなく、良好に
変位を搬送台2側に伝達し得る。 FIG. 6 shows a flexible rod 12c constructed by tightly winding wire rods 21, which has good followability against deformation in the bending direction, and transmission of force in the axial direction to each wire rod 21. Since there is no gap, the displacement can be transmitted to the transfer table 2 side without deformation.
第7図は、第8図の従来構成のものと、第3図
の実施例のものの、搬送台2の搬送速度を比較し
たものであつて、該可撓性棒体12がその軸方向
への変位を良好に搬送台2に伝達することができ
ることにより、搬送台2の変位を向上し得る事が
示される。 FIG. 7 compares the conveyance speed of the conveyor table 2 between the conventional structure shown in FIG. 8 and the embodiment shown in FIG. It is shown that the displacement of the conveyance table 2 can be improved by being able to satisfactorily transmit the displacement of the conveyance table 2 to the conveyance table 2.
前記各構成の連結部材は板ばね7の下端と連結
片4の取付面4a間に適用することもできる。ま
たは板ばね7の上下端の両方に適用してもよい。 The connecting members of each of the above configurations can also be applied between the lower end of the leaf spring 7 and the mounting surface 4a of the connecting piece 4. Alternatively, it may be applied to both the upper and lower ends of the leaf spring 7.
その他、前記板ばね7の揺動をさらに容易にす
るために、第3図鎖線で示すように、金属棒可撓
性棒体12の両側位置に削成部22,22を形成
するようにしてもよい。 In addition, in order to further facilitate the rocking of the leaf spring 7, cut portions 22, 22 are formed on both sides of the flexible metal rod body 12, as shown by chain lines in FIG. Good too.
尚、これまで曲線型パーツフイーダを例にとつ
て説明したが、本考案はトラフ搬送台を用いた直
線型パーツフイーダにおいても適用でき、駆動体
の取付偏倚やトラフ重心のばらつきなどにより板
ばねの取付部に惹起する捩り応力を吸収して上記
と同様の効果を達成し得る。 Although the explanation has been given using a curved parts feeder as an example, the present invention can also be applied to a linear parts feeder using a trough conveyor, and the mounting part of the leaf spring may be affected due to the installation deviation of the drive body or the variation in the center of gravity of the trough. The same effect as above can be achieved by absorbing torsional stress caused by
〈考案の効果〉
本考案は、板ばね7の上下端のいずれかまたは
両方を可撓性棒体12a〜12cを介して搬送台
2又は基台1の取付部4,5に、間隔を置いて連
結したから、板ばね7の湾曲駆動に伴う変位の拘
束と、捩れは該可撓性棒体12a〜12cで吸収
され、かつ、該可撓性棒体12a〜12cの軸方
向への剛性により、板ばね7の揺動変位を変位逃
げを生ずることなく伝達され、搬送台2の印加電
圧当たりの変位量が向上する。また、接続ばねが
不要となつて搬送台2の高さを低くすることがで
き、これに伴つて共振周波数を上昇させることが
できて、同じ電圧で高い搬送速度を得ることがで
きる。さらには板ばね7が連結される取付面は、
高い平滑度を要せずフライス加工が不要となり、
製造コストが低減する等の効果がある。<Effects of the invention> The present invention connects either or both of the upper and lower ends of the leaf spring 7 to the mounting portions 4 and 5 of the conveyor table 2 or the base 1 via the flexible rods 12a to 12c at a distance. Since the plate springs 7 are connected by the flexible rods 12a to 12c, the displacement and torsion caused by the bending drive of the leaf spring 7 are absorbed by the flexible rods 12a to 12c, and the rigidity in the axial direction of the flexible rods 12a to 12c is As a result, the oscillating displacement of the leaf spring 7 is transmitted without causing a displacement escape, and the amount of displacement of the conveyor table 2 per applied voltage is improved. Further, since the connection spring is not required, the height of the conveyance platform 2 can be lowered, and the resonant frequency can be increased accordingly, making it possible to obtain a high conveyance speed with the same voltage. Furthermore, the mounting surface to which the leaf spring 7 is connected is
High smoothness is not required and milling is not required.
This has the effect of reducing manufacturing costs.
添付図面は本考案の一実施例を示し、第1図は
側面図、第2図は平面図、第3図は駆動体6の斜
視図、第4図は連結部の拡大縦断側面図、第5図
は変形例の可撓性棒体12bを示す側面図、第6
図は変形例の可撓性棒体12cを示す側面図、第
7図は搬送台2の搬送速度と印加電圧との関係
を、本考案と従来構成とを比較して示すグラフで
ある。また第8図は従来構成の駆動体aの斜視
図、第9図は切欠き部gの付いた接続バネfの平
面図である。
1……基台、2……搬送台、4a……取付面、
5a……取付面、6……駆動体、7……板ばね、
8a,8b……電歪素子、11……透孔、12a
〜12c……可撓性棒体、13a,13b……螺
子部、20……縮径部。
The accompanying drawings show an embodiment of the present invention, in which FIG. 1 is a side view, FIG. 2 is a plan view, FIG. 3 is a perspective view of the driver 6, FIG. 5 is a side view showing a flexible rod 12b of a modified example;
The figure is a side view showing a modified example of the flexible rod 12c, and FIG. 7 is a graph showing the relationship between the transport speed of the transport platform 2 and the applied voltage, comparing the present invention and the conventional structure. Further, FIG. 8 is a perspective view of a drive body a having a conventional structure, and FIG. 9 is a plan view of a connecting spring f with a notch g. 1...Base, 2...Transfer platform, 4a...Mounting surface,
5a... Mounting surface, 6... Drive body, 7... Leaf spring,
8a, 8b... Electrostrictive element, 11... Through hole, 12a
~12c...Flexible rod, 13a, 13b...Threaded portion, 20...Reduced diameter portion.
Claims (1)
着してなる複数の駆動体を、搬送台と、基台の間
に、夫々の上下端を各台に連結してなるものにお
いて、 板ばねの上下端のすくなくとも一方に、軸方向
で剛性を有する可撓性棒体を垂直状に起立して支
持し、該可撓性棒体の突出端を、搬送台または基
台の取付部に固定することにより、板ばねの端部
を、前記可撓性棒体を介して前記取付け部に対し
て間隔をおいて連結したことを特徴とするパーツ
フイーダ。[Scope of Claim for Utility Model Registration] A plurality of driving bodies each having an electrostrictive element affixed to the main surface of a leaf spring that also serves as an electrode plate is placed between a conveyance table and a base, with the upper and lower ends of each unit connected to each other. A flexible rod having rigidity in the axial direction is vertically supported on at least one of the upper and lower ends of the leaf spring, and the protruding end of the flexible rod is A parts feeder characterized in that an end portion of a leaf spring is connected to the mounting portion at a distance via the flexible rod by being fixed to the mounting portion of a transport table or a base.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3216488U JPH0542969Y2 (en) | 1988-03-10 | 1988-03-10 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3216488U JPH0542969Y2 (en) | 1988-03-10 | 1988-03-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01134615U JPH01134615U (en) | 1989-09-13 |
JPH0542969Y2 true JPH0542969Y2 (en) | 1993-10-28 |
Family
ID=31258496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3216488U Expired - Lifetime JPH0542969Y2 (en) | 1988-03-10 | 1988-03-10 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0542969Y2 (en) |
-
1988
- 1988-03-10 JP JP3216488U patent/JPH0542969Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH01134615U (en) | 1989-09-13 |
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