JPS6324818B2 - - Google Patents
Info
- Publication number
- JPS6324818B2 JPS6324818B2 JP59030959A JP3095984A JPS6324818B2 JP S6324818 B2 JPS6324818 B2 JP S6324818B2 JP 59030959 A JP59030959 A JP 59030959A JP 3095984 A JP3095984 A JP 3095984A JP S6324818 B2 JPS6324818 B2 JP S6324818B2
- Authority
- JP
- Japan
- Prior art keywords
- side branch
- rod
- central side
- length
- central
- 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
Links
- 230000005284 excitation Effects 0.000 description 22
- 229920003023 plastic Polymers 0.000 description 9
- 239000004033 plastic Substances 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明はプラスチツク等の超音波加工に用いる
ホーンに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a horn used for ultrasonic processing of plastics and the like.
第１図に示すように、断面四角形の棒１の一端
面を加振面（駆動面）ｄ、他端面を加工面（放射
面）ｒとし、加振面に超音波振動を加えたときの
振動の腹点（棒１の長手方向中央部）に、棒１と
直角に側方に延長する中央側枝２を設けた超音波
加工機用ホーンは特公昭45−20224号公報にて公
知である。 As shown in Fig. 1, one end surface of a rod 1 with a square cross section is an excitation surface (driving surface) d, and the other end surface is a processing surface (radiation surface) r, and when ultrasonic vibration is applied to the excitation surface. A horn for an ultrasonic processing machine is known from Japanese Patent Publication No. 45-20224, which has a central side branch 2 extending laterally at right angles to the rod 1 at the antinode point of vibration (the central part in the longitudinal direction of the rod 1). .
このホーンは加振面ｄに加振エネルギーが加え
られて棒１が長手方向に縮んだ瞬間には、中央側
枝２は延長方向に沿つて伸び、棒１が伸びた瞬間
には、中央側枝２は延長方向に沿つて縮んだ状態
となる逆相Ｌ−Ｌ変換体である。 In this horn, at the moment when excitation energy is applied to the excitation surface d and the rod 1 contracts in the longitudinal direction, the central side branch 2 extends along the extension direction, and at the moment when the rod 1 is extended, the central side branch 2 is an antiphase L-L transformer that is in a contracted state along the extension direction.
第１図のホーン３個を中央側枝２で横に連続せ
しめると、第２図のようになるが、加工面r1，
r2，r3の間隔があきすぎているので、プラスチツ
クに帯状の連続した溶着面を形成することができ
ない。 If the three horns shown in Fig. 1 are connected horizontally by the central side branch 2, the result will be as shown in Fig. 2, but the machined surfaces r 1 ,
Since the distance between r 2 and r 3 is too large, it is not possible to form a continuous band-like weld surface on the plastic.
この問題は第３図に示すように、断面四角形で
長手方向中心線に対し左右対称に両端部間の幅を
両端部３の幅より小さくした棒１を、両端部に小
間隙４を有せしめて中央側枝２で横に連続せしめ
ることにより解決できる。このようにすると、小
間隙４の大きさは0.3〜0.4mm程度にすることが可
能であり、小間隙４の下に位置するプラスチツク
の部分も加工面r1〜r3と連続して溶着させること
ができる。但しこのプラスチツクとしては、プラ
スチツク内で振動の伝達がある程度可能な硬質の
材料に限られる。 As shown in Fig. 3, a rod 1 with a rectangular cross section and symmetrical width between both ends is smaller than the width of both ends 3 with a small gap 4 at both ends. This can be solved by connecting the central branch 2 horizontally. In this way, the size of the small gap 4 can be set to about 0.3 to 0.4 mm, and the plastic part located under the small gap 4 can also be welded continuously to the machined surfaces r 1 to r 3 . be able to. However, this plastic is limited to hard materials that can transmit vibrations to some extent within the plastic.
この工具ホーンは加振面d1，d3とd2、及び加工
面r1，r3とr2が逆相の関係にある。加振面d1，d3
が伸びたときは、加工面r1，r3も伸びた状態とな
るが、このとき加振面d2と加工面r2は縮んだ状態
となつている。この様な関係にある工具ホーンで
は、軟質のビニルのような軟質プラスチツクでは
小間〓４の真下を溶着させることが出来ないの
で、気密な連続した溶着線を得ることができない
し、加振面で１個所から加振せずに３個所同時に
加振する場合、加振面d2はd1，d3に対して逆相の
動きをする様に、分極された振動子あるいは電気
回路に依り、d1，d3の加振と180゜位相をずらせる
等の配慮が必要となる。 In this tool horn, the excitation surfaces d 1 , d 3 and d 2 and the machining surfaces r 1 , r 3 and r 2 are in an opposite phase relationship. Excitation plane d 1 , d 3
When elongated, the processed surfaces r 1 and r 3 are also in an elongated state, but at this time, the excitation surface d 2 and the processed surface r 2 are in a contracted state. With a tool horn that has this kind of relationship, it is impossible to weld the area directly under the booth 4 with soft plastic such as soft vinyl, so it is not possible to obtain an airtight continuous weld line, and the excitation surface When exciting three places at the same time instead of from one place, the excitation surface d 2 moves in the opposite phase to d 1 and d 3 using a polarized vibrator or electric circuit. Consideration must be taken to shift the phase by 180° from the excitation of d 1 and d 3 .
本発明は、更にこのような問題を改良した工具
ホーンを提供することを目的としたものである。 It is an object of the present invention to provide a tool horn that further improves this problem.
本発明は上記の目的を達する為に、断面四角形
の複数個の棒と、この各棒の一端の相対する側面
に左右対称に直角に突出して形成した端側枝と、
この各棒の長手方向中央部より少し端側枝寄りに
端側枝を形成した側面と同じ相対する側面に左右
対称に直角に突出して形成した中央側枝とを具
え、前記各棒の片側の中央側枝の端から前記各他
側の中央側枝の端までの長さは前記棒の他端を加
振したときに中央側枝の突出方向に生ずる縦波の
１波長の長さに等しく形成され、各中央側枝はそ
の中心線が前記棒の他端を加振したときにこの棒
の長手方向に生ずる応力の腹点と直交するように
形成され、各棒は端側枝及び中央側枝で相互に一
体に連続され、左右両端の連続しない中央側枝
は、前記棒の他端を加振したときに中央側枝の突
出方向に生ずる縦波の1/4波長の長さに相当する
長さの中央側枝と同一断面の延長部を一体に形成
するか、前記棒の他端を加振したときに中央側枝
の突出方向に生ずる縦波の1/4波長の長さの内の
一部の長さの中央側枝と同一断面の延長部と、前
記1/4波長の長さから前記一部の長さを差し引い
た残りの長さの部分が該残りの長さの部分を中央
側枝と同一断面に形成したときの質量に等しく該
残りの長さの部分の長さよりも短いブロツクに形
成されこれら延長部及びブロツクが中央側枝から
順次に一体に形成されている超音波加工機用ホー
ンを構成したことにある。 In order to achieve the above object, the present invention includes a plurality of rods having a rectangular cross section, and end side branches formed to protrude symmetrically at right angles from opposing sides of one end of each rod.
Each rod is provided with a side surface on which the end side branch is formed a little closer to the end side branch than the longitudinal center part thereof, and a central side branch formed so as to project symmetrically at right angles to the same opposing side surface, and a central side branch on one side of each rod. The length from the end to the end of the center side branch on each other side is equal to the length of one wavelength of a longitudinal wave generated in the direction in which the center side branch projects when the other end of the rod is excited, and each center side branch is is formed such that its center line is perpendicular to the antinode point of the stress generated in the longitudinal direction of the rod when the other end of the rod is vibrated, and each rod is integrally continuous with each other at the end side branches and the central side branch. , the discontinuous central side branches at both the left and right ends have the same cross section as the central side branch with a length corresponding to 1/4 wavelength of the longitudinal wave generated in the protruding direction of the central side branch when the other end of the rod is excited. Either the extension part is formed integrally with the other end of the rod, or the length is the same as a part of the length of the 1/4 wavelength of the longitudinal wave generated in the protruding direction of the central side branch when the other end of the rod is excited. The mass when the extension of the cross section and the remaining length after subtracting the length of the part from the length of the 1/4 wavelength are formed into the same cross section as the central side branch. The horn for an ultrasonic processing machine is configured such that the extension part and the block are integrally formed sequentially from the central side branch.
即ち、第５図に示すような断面四角形の棒１の
一端の相対する側面に直角に左右対称に突出せし
めて端側枝５を形成すると共に、端側枝５を形成
した側面と同じ側面の棒１の長手方向中央部より
少し端側枝５寄りに中央側枝２を棒１に直角に左
右対称に突出せしめて形成する。片側の中央側枝
２の端から他側の中央側枝２の端までの長さは、
棒１の他端の加振面ｄを加振したときに中央側枝
２の突出方向に生ずる縦波の一波長の相当する長
さとし、中央側枝２の中心線は、加振面ｄを加振
したときに棒１の長手方向に沿つて生ずる応力の
腹点と直交するように形成されている。このよう
な同じ棒１を複数個第４図に示すように、中央側
枝２及び端側枝５で一列に接続する。そして左右
両端の連続しない中央側枝２に、第６図に示す、
中央側枝２と同一断面の延長部６を形成し、この
延長部６を、棒１の他端を加振したときに中央側
枝２の突出方向に生ずる縦波の1/4波長の長さに
相当する長さの中央側枝２と同一断面の延長部６
を一体に形成するか、前記棒１の他端を加振した
ときに中央側枝２の突出方向に生ずる縦波の1/4
波長の長さの内の一部の長さの中央側枝２と同一
断面の延長部６と、前記1/4波長の長さから前記
一部の長さを差し引いた残りの長さの部分が該残
りの長さの部分を中央側枝２と同一断面に形成し
たときの質量に等しく該残りの長さの部分の長さ
よりも短いブロツク７に形成されこれら延長部６
及びブロツク７を中央側枝２から順次に一体に形
成したものである。ブロツク７は図のように厚さ
は延長部６と等しく延長部６とでＴ字形をなすよ
うに延長部６を中心として棒１の延長方向両側に
突出せしめてもよいし、Ｌ字形としてもよいし、
延長部６の断面よりも断面の大きいブロツク等と
してもよい。 That is, one end of a rod 1 having a rectangular cross section as shown in FIG. A central side branch 2 is formed by projecting symmetrically at right angles to the rod 1 a little closer to the end side branch 5 than the central part in the longitudinal direction. The length from the end of the central side branch 2 on one side to the end of the central side branch 2 on the other side is:
When the excitation surface d at the other end of the rod 1 is vibrated, the length corresponds to one wavelength of the longitudinal wave generated in the protruding direction of the central side branch 2, and the center line of the central side branch 2 is the excitation surface d. It is formed so as to be perpendicular to the antinode point of the stress generated along the longitudinal direction of the rod 1 when the rod 1 is bent. As shown in FIG. 4, a plurality of such rods 1 of the same type are connected in a line by a central side branch 2 and an end side branch 5. Then, as shown in FIG.
An extension part 6 having the same cross section as the central side branch 2 is formed, and this extension part 6 has a length of 1/4 wavelength of the longitudinal wave generated in the protruding direction of the central side branch 2 when the other end of the rod 1 is excited. an extension 6 of the same cross section as the central branch 2 of corresponding length;
1/4 of the longitudinal wave generated in the protruding direction of the central side branch 2 when the other end of the rod 1 is vibrated.
An extension part 6 having the same cross section as the central side branch 2 having a length of a part of the wavelength, and a part having the remaining length obtained by subtracting the part length from the length of the 1/4 wavelength. These extensions 6 are formed into a block 7 which is equal to the mass when the remaining length is formed to have the same cross section as the central side branch 2 and is shorter than the remaining length.
and blocks 7 are sequentially integrally formed from the central side branch 2. As shown in the figure, the block 7 may have the same thickness as the extension part 6 and may protrude on both sides in the direction of extension of the rod 1 with the extension part 6 as the center so that the extension part 6 forms a T-shape, or it may be L-shaped. Good and
It may be a block or the like whose cross section is larger than that of the extension portion 6.
この本発明にかかる超音波加工機用ホーンの作
用を第７図及び第８図について説明する。第７
図、第８図に示すごとく棒１の縦方向の振動変位
分布は、それぞれの図の棒１中に曲線ｆで示すよ
うに加振面ｄ，d1，d2，d3及び加工面ｒ，r1，r2，
r3で最大となる。これに対し応力分布は各図の左
側に曲線Ｆで示したようになつている。棒１には
端側枝５による付加質量が加わるので、棒１に加
わる縦波の振動の節点、即ち応力の最大点は、棒
１の中央部よりも端側枝５寄りとなる。この節点
に中心線が直交するように中央側枝２を設けて棒
１の縦振動が中央側枝２に伝達するようにしてあ
る。棒１から中央側枝２に伝達した中央側枝２の
突出方向の縦振動の振動変位分布は、中央側枝２
中に曲線ｅで示すように両端で零（最小）で、図
のそれぞれ下側に曲線Ｅで示すように、応力分布
は最大となる。従つてこの状態では、加振面に加
えられた振動に共振することはできない。共振す
る為には棒１及び中央側枝２の両端が応力最小で
振動変位が最大となる分布とならなければならな
いので、この場合では、中央側枝２の自由な両端
を（この周波数を変えないで）応力最小とし、振
動変位最大となるようにしなければならない。こ
のようにする為に、本発明では第６図に示すよう
な中央側枝２と同一断面で、中央側枝２の突出方
向縦波の1/4波長に相当する長さの延長部６を、
中央側枝２の左右の自由端に一体に形成して、第
８図から判るように中央側枝２の左右両端を応力
最小とし振動変位が最大となるようにしたもので
ある。 The operation of the horn for an ultrasonic processing machine according to the present invention will be explained with reference to FIGS. 7 and 8. 7th
As shown in Fig. 8, the longitudinal vibration displacement distribution of the rod 1 is determined by the excitation surfaces d, d 1 , d 2 , d 3 and the machined surface r, as shown by the curve f in the rod 1 in each figure. , r 1 , r 2 ,
Maximum at r 3 . On the other hand, the stress distribution is as shown by curve F on the left side of each figure. Since the additional mass of the end branch 5 is added to the rod 1, the node of vibration of the longitudinal wave applied to the rod 1, that is, the maximum point of stress, is closer to the end branch 5 than the center of the rod 1. The central side branch 2 is provided so that the center line is perpendicular to this node, so that the longitudinal vibration of the rod 1 is transmitted to the central side branch 2. The vibration displacement distribution of the longitudinal vibration in the protrusion direction of the central lateral branch 2 transmitted from the rod 1 to the central lateral branch 2 is
The stress distribution is zero (minimum) at both ends as shown by curve e in the middle, and maximum as shown by curve E at the bottom of the figure. Therefore, in this state, the vibration applied to the excitation surface cannot resonate. In order to resonate, both ends of the rod 1 and the central side branch 2 must have a distribution in which the stress is minimum and the vibration displacement is maximum, so in this case, the free ends of the central side branch 2 must be ) Stress must be minimized and vibration displacement must be maximized. In order to do this, in the present invention, an extension part 6 having the same cross section as the central side branch 2 as shown in FIG.
It is formed integrally with the left and right free ends of the central side branch 2, so that the stress is minimized at both left and right ends of the central side branch 2 and the vibration displacement is maximized, as seen from FIG.
延長部６を1/4波長の長さに延長した場合、相
当左右に突出するようになり、使用場所の関係や
取付等の関係から突出度を短かくしたい時には、
延長部を少なくとも僅か残し、残部を、残部と同
質量で残部より短かいブロツクとすることにより
突出長さを短縮するようにしたものである。ここ
で延長部を少なくとも僅か残すのは、ブロツク７
への中央側枝２からの応力がなめらかに伝達され
るようにするためである。相隣る棒１の中心線の
間隔は中央側枝２を伝搬する縦波の１波長に相当
する長さとされる。 When the extension part 6 is extended to the length of 1/4 wavelength, it will protrude considerably to the left and right, and if you want to shorten the protrusion due to the location of use or installation, etc.
The length of the protrusion is shortened by leaving at least a small portion of the extension and making the remaining part a block having the same mass as the remaining part and shorter than the remaining part. Here, leaving at least a small extension is block 7.
This is to ensure that the stress from the central side branch 2 to the central side branch 2 is transmitted smoothly. The distance between the center lines of adjacent rods 1 is set to a length corresponding to one wavelength of the longitudinal wave propagating through the central side branch 2.
このホーンは端側枝５を有する一端を連続した
平面に形成して加工面Ｒとし、他端面を加振面
d1，d2，d3として使用するものである。端側枝５
は、加振面d1，d2，d3に同一位相同振幅の縦振動
を加えた時に、棒１の端側枝５を除いた端面と同
一位相で振動し、棒１の共振周波数にも影響を及
ぼさない様な質量に形成される。棒１の幅は、中
央側枝２に生ずる縦波が侵入しない、中央側枝２
に生ずる縦波の1/2×0.6〜0.8倍の幅とするのが
よい。このように棒１と中央側枝２とは、応力最
大点で交差しているので、棒１に加えられた縦方
向振動エネルギーが中央側枝２へ変換される効率
は最大であり、加振面d2より加圧力が加わつても
変化することなく、充分左右の中央側枝２に転送
され、更に再びr3，d3とr1，d1方向へエネルギー
変換が同様の理由で行われ、r3，r1においてr2と
同相で同じ大きさの振動変位が得られる。 This horn has one end with an end side branch 5 formed into a continuous plane to serve as a processed surface R, and the other end surface as an excitation surface.
These are used as d 1 , d 2 , and d 3 . End side branch 5
When longitudinal vibrations of the same phase and amplitude are applied to the excitation surfaces d 1 , d 2 , and d 3 , they vibrate in the same phase as the end face of rod 1 excluding the end side branches 5, and the resonance frequency of rod 1 also increases. The mass is formed so that it has no influence. The width of the rod 1 is such that the longitudinal waves generated in the central side branch 2 do not penetrate into the central side branch 2.
The width should be 1/2 x 0.6 to 0.8 times the longitudinal wave generated in the wave. In this way, the rod 1 and the central side branch 2 intersect at the point of maximum stress, so the efficiency with which the longitudinal vibration energy applied to the rod 1 is converted to the central side branch 2 is maximum, and the excitation plane d Even when pressure is applied from 2 , it does not change and is sufficiently transferred to the left and right central side branches 2, and energy conversion is performed again in the r 3 , d 3 and r 1 , d 1 directions for the same reason, and r 3 , r 1 has the same phase and magnitude of vibration displacement as r 2 .
従つて本発明によるホーンにおいてはd1，d2，
d3の各加振面を、同相、同振幅の振動をする振動
子により駆動することが可能となると共に、中央
の加振面d2のみより加振した場合でも中央側枝２
により振動のエネルギーが左右の棒１にも供給さ
れ、加工面Ｒ全面を同相で振動させることができ
る。負荷が重いときは連結された棒１の加振面を
すべて加振し、負荷が軽いときは、連結された棒
１のうちの一つまたは二つを加振するという使い
分けができる。その結果、第２図、第３図に示し
た逆相Ｌ−Ｌ変換体を基本としたホーンでは出来
なかつたプラスチツク成形品や軟質シートの気密
性のある連続溶着帯の形成加工が可能となり、更
に間隔が不規則な多点のプラスチツクのリベツテ
ィングや、プラスチツク中への金属の埋込み加工
等も、加工面Ｒにチツプをつけたり、チツプを削
り出しで形成することにより可能となる。 Therefore, in the horn according to the present invention, d 1 , d 2 ,
It becomes possible to drive each excitation surface of d 3 with a vibrator that vibrates in the same phase and with the same amplitude, and even when excitation is performed only from the central excitation surface d 2 , the central side branch 2
Vibration energy is also supplied to the left and right rods 1, making it possible to vibrate the entire machined surface R in the same phase. When the load is heavy, all of the excitation surfaces of the connected rods 1 are vibrated, and when the load is light, one or two of the connected rods 1 are vibrated. As a result, it has become possible to form an airtight continuous welded band on plastic molded products and soft sheets, which could not be done with the horn based on the reverse phase L-L converter shown in Figures 2 and 3. Furthermore, riveting of plastic at multiple points with irregular intervals, embedding of metal into plastic, etc. are also possible by attaching chips to the processed surface R or by cutting out the chips.
第１図は逆相Ｌ−Ｌ変換体からなる従来の超音
波加工機用ホーンの斜視図、第２図は第１図のホ
ーンを側枝で複数個連結した従来のホーンの斜視
図、第３図は第２図のホーンを改良した従来のホ
ーンの正面図、第４図は本発明によるホーンの一
実施例の正面図、第５図は本発明によるホーンの
単位体の斜視図、第６図は第４図の延長部及びブ
ロツクの斜視図、第７図は第５図の、第８図は第
４図の振動変位分布と応力分布を示した図であ
る。
１……棒、２……中央側枝、３……両端部、４
……小間隙、５……端側枝、６……延長部、７…
…ブロツク、ｄ，d1，d2，d3……加振面、ｒ，
r1，r2，r3，Ｒ……加工面。
Fig. 1 is a perspective view of a conventional horn for an ultrasonic processing machine consisting of a reverse phase L-L converter, Fig. 2 is a perspective view of a conventional horn in which a plurality of the horns of Fig. 1 are connected by side branches, and Fig. 3 The figures are a front view of a conventional horn that is an improved version of the horn shown in FIG. 2, FIG. 4 is a front view of an embodiment of the horn according to the present invention, FIG. The figure is a perspective view of the extension part and block of FIG. 4, FIG. 7 is a diagram showing the vibration displacement distribution and stress distribution of FIG. 5, and FIG. 8 is a diagram showing the vibration displacement distribution and stress distribution of FIG. 4. 1... Rod, 2... Central side branch, 3... Both ends, 4
... small gap, 5 ... end branch, 6 ... extension, 7 ...
...Block, d, d 1 , d 2 , d 3 ... Excitation surface, r,
r 1 , r 2 , r 3 , R...machined surface.
Claims (1)
の相対する側面に左右対称に直角に突出して形成
した端側枝と、この各棒の長手方向中央部より少
し端側枝寄りに端側枝を形成した側面と同じ相対
する側面に左右対称に直角に突出して形成した中
央側枝とを具え、前記各棒の片側の中央側枝の端
から前記各他側の中央側枝の端までの長さは前記
棒の他端を加振したときに中央側枝の突出方向に
生ずる縦波の１波長の長さに等しく形成され、各
中央側枝はその中心線が前記棒の他端を加振した
ときにこの棒の長手方向に生ずる応力の腹点と直
交するように形成され、各棒は端側枝及び中央側
枝で相互に一体に連続され、左右両端の連続しな
い中央側枝は、前記棒の他端を加振したときに中
央側枝の突出方向に生ずる縦波の1/4波長の長さ
に相当する長さの中央側枝と同一断面の延長部が
一体に形成されていることを特徴とする超音波加
工機用ホーン。 ２ 断面四角形の複数個の棒と、この各棒の一端
の相対する側面に左右対称に直角に突出して形成
した端側枝と、この各棒の長手方向中央部より少
し端側枝寄りに端側枝を形成した側面と同じ相対
する側面に左右対称に直角に突出して形成した中
央側枝とを具え、前記各棒の片側の中央側枝の端
から前記各他側の中央側枝の端までの長さは前記
棒の他端を加振したときに中央側枝の突出方向に
生ずる縦波の１波長の長さに等しく形成され、各
中央側枝はその中心線が前記棒の他端を加振した
ときにこの棒の長手方向に生ずる応力の腹点と直
交するように形成され、各棒は端側枝及び中央側
枝で相互に一体に連続され、左右両端の連続しな
い中央側枝は、前記棒の他端を加振したときに中
央側枝の突出方向に生ずる縦波の1/4波長の長さ
の内の一部の長さの中央側枝と同一断面の延長部
と、前記1/4波長の長さから前記一部の長さを差
し引いた残りの長さの部分が該残りの長さの部分
を中央側枝と同一断面に形成したときの質量に等
しく該残りの長さの部分の長さよりも短いブロツ
クに形成されこれら延長部及びブロツクが中央側
枝から順次に一体に形成されていることを特徴と
する超音波加工機用ホーン。[Scope of Claims] 1. A plurality of rods having a rectangular cross section, an end side branch formed to protrude symmetrically and at right angles to the opposing side surfaces of one end of each rod, and an end a little further from the longitudinal center of each rod. A side branch forming an end side branch near the side branch and a central side branch formed symmetrically and projecting at right angles from the same opposing side surface, from the end of the central side branch on one side of each rod to the end of the central side branch on each other side. The length is equal to the length of one wavelength of the longitudinal wave generated in the protruding direction of the central side branch when the other end of the rod is vibrated, and the center line of each central side branch extends from the other end of the rod. The rod is formed so as to be perpendicular to the antinode point of the stress generated in the longitudinal direction of this rod when it is vibrated, and each rod is integrally continuous with the end side branches and the central side branches, and the central side branches that are not continuous at both the left and right ends are the same as those mentioned above. It should be noted that an extension part with the same cross section as the central side branch is formed integrally with a length corresponding to 1/4 wavelength of the longitudinal wave generated in the protruding direction of the central side branch when the other end of the rod is vibrated. Features a horn for ultrasonic processing machines. 2 A plurality of rods with a rectangular cross section, an end side branch formed by projecting symmetrically at right angles to the opposing side surfaces of one end of each of these rods, and an end side branch slightly closer to the end side branch from the longitudinal center of each of these rods. and a central side branch formed to protrude symmetrically at right angles from the same opposing side surface as the formed side surface, and the length from the end of the central side branch on one side of each rod to the end of the central side branch on each other side is as described above. The length of each central side branch is equal to one wavelength of the longitudinal wave generated in the protruding direction of the central side branch when the other end of the rod is excited, and each central side branch has a center line that is equal to the length of the longitudinal wave generated in the protruding direction of the central side branch when the other end of the rod is excited. The rod is formed so as to be perpendicular to the antinode point of the stress generated in the longitudinal direction of the rod, and each rod is integrally continuous with the end side branch and the central side branch, and the central side branch that is not continuous at both the left and right ends applies the other end of the rod. An extension part having the same cross section as the central side branch and having a length that is a part of the length of the 1/4 wavelength of the longitudinal wave generated in the protruding direction of the central side branch when shaken, and The remaining length after subtracting a part of the length is equal to the mass when the remaining length is formed to have the same cross section as the central side branch, and the block is shorter than the length of the remaining length. A horn for an ultrasonic processing machine, characterized in that the extension portions and blocks are integrally formed sequentially from a central side branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59030959A JPS60174630A (en) | 1984-02-20 | 1984-02-20 | Horn for ultrasonic processing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59030959A JPS60174630A (en) | 1984-02-20 | 1984-02-20 | Horn for ultrasonic processing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60174630A JPS60174630A (en) | 1985-09-07 |
| JPS6324818B2 true JPS6324818B2 (en) | 1988-05-23 |
Family
ID=12318211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59030959A Granted JPS60174630A (en) | 1984-02-20 | 1984-02-20 | Horn for ultrasonic processing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60174630A (en) |
-
1984
- 1984-02-20 JP JP59030959A patent/JPS60174630A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60174630A (en) | 1985-09-07 |
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