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JPH01316249A - Tool horn for supersonic welding machine - Google Patents

Tool horn for supersonic welding machine

Info

Publication number
JPH01316249A
JPH01316249AJP63057657AJP5765788AJPH01316249AJP H01316249 AJPH01316249 AJP H01316249AJP 63057657 AJP63057657 AJP 63057657AJP 5765788 AJP5765788 AJP 5765788AJP H01316249 AJPH01316249 AJP H01316249A
Authority
JP
Japan
Prior art keywords
width
wavelength
waveform
length
center
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
Application number
JP63057657A
Other languages
Japanese (ja)
Other versions
JPH0469870B2 (en
Inventor
Shiro Yamashita
山下 四郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Priority to JP63057657ApriorityCriticalpatent/JPH01316249A/en
Publication of JPH01316249ApublicationCriticalpatent/JPH01316249A/en
Publication of JPH0469870B2publicationCriticalpatent/JPH0469870B2/ja
Grantedlegal-statusCriticalCurrent

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Abstract

PURPOSE:To protect a tool from generating cracks and fix the width without depending on frequency to be used by forming a tool by means of a plate-shaped material of given length, width and thickness, forming the vibrating surface in the form of a crest with symmetrical left and right sides with projected section at the center of the surface and rear and recessed sections at the left and right. CONSTITUTION:A vibrating surface 1 is formed as one side surface along in the longitudinal direction of a plate-shaped material of supersonic vibration to be used consisting of length L of 1/2 wave length, width l of 1/4 wave length or longer and thickness T of 1/6 wave length or shorter, and the vibrating surface 1 is formed in the form of a crest with a peak at the center and symmetrical left and right sides from the front 3 and rear 4 having the length L and the width l. Projected sections 5 at the center and recessed sections 6 on the left and right are formed between the foot of the crest of the front 3 and rear 4 and a radiation surface 2 in a row in the width l direction with symmetrical left and right sides identical on the front 3 and rear 4, and the halves of both ends of the recessed sections 6 are deeper than the central side. The drawing is the simulation of thickness T of 45mm, width l of 255mm and length L of 160.2mm with 18.362KHz and of duralumin material quality, and the radiation surface 2 is vibrated almost evenly regardless of a little variation of width land length L.

Description

Translated fromJapanese

【発明の詳細な説明】〔産業上の利用分野〕本発明は、熱可塑性プラスチックに超音波振動を加えて
波着するために用いる超音波溶着機用工具ホーンに関す
る。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tool horn for an ultrasonic welding machine that is used for applying ultrasonic vibration to a thermoplastic to bond it.

゛〔従来の技術〕熱可塑性プラスチックを超音波溶着する場合、プラスチ
ックと接せしめられる工具ホーンの面(加工面、放射面
)が同位相でほぼ均一の縦振動変位をなすことが、溶着
を均−璧行なうために必要である。
[Conventional technology] When welding thermoplastic plastics by ultrasonic waves, the surfaces of the tool horn that come into contact with the plastic (machining surface, radiation surface) should have almost uniform longitudinal vibration displacement in the same phase to ensure even welding. - Necessary for performing well.

プラスチックに形成する溶着部の長さが、工具ホーンの
振動の波長の1/4波長以上の長さになると、第11図
に示すように、板形の場合、加振面lから放射面2の方
向に延長するスリット8を横幅lの長さに応じて設けな
いと、放射面2を均一に振動できないことが知られてい
る。この縦幅り。
When the length of the welded part formed on the plastic is longer than 1/4 wavelength of the vibration wavelength of the tool horn, in the case of a plate shape, as shown in Fig. It is known that the radiation surface 2 cannot be vibrated uniformly unless the slit 8 extending in the direction is provided in accordance with the length of the width l. This height and width.

スリットの幅8、スリット数、スリット間の幅w1スリ
ット8の両端から加振面1や放射面2までの距離tは、
これを決定するための設計方法がないため、経験的にお
およその寸法に削り出し、振動させて使用周波数の調整
や、振動変位が放射面2で均一となるように試行錯誤的
に削り直しを行なって作っている。この問題を解決する
ために、境界値問題を扱う観点から有限要素法により、
振動モードの解析や、応力分布の解析を行ない多数のモ
デルについて実証し上記の縦幅L1スリットノ幅8、ス
リット数、スリット間の幅w1スリット8の両端から加
振面1や放射面2までの距離を等を決定する方法が特公
昭62−58899号公報にて提案されている。
The width 8 of the slit, the number of slits, the width between the slits w1, the distance t from both ends of the slit 8 to the excitation surface 1 and the radiation surface 2 are:
Since there is no design method for determining this, it is necessary to cut it to approximate dimensions empirically, vibrate it, adjust the operating frequency, and re-cut it by trial and error so that the vibration displacement becomes uniform on the radiation surface 2. I'm doing it and making it. In order to solve this problem, we use the finite element method from the perspective of dealing with boundary value problems.
We analyzed the vibration mode and stress distribution and verified a number of models. A method for determining distance, etc. is proposed in Japanese Patent Publication No. 62-58899.

しかし、このようなスリット8を有する工具では、使用
によりスリット8の両端部から亀裂が発生し、使用でき
なくなることがある。この原因は、この部分に繰返し応
力が集中するためと考えられ、その対策としてスリット
8の両端内面を鎮面仕上げにすることも行なわれている
が、完全な解決に至っていない。
However, in a tool having such a slit 8, cracks may occur from both ends of the slit 8 due to use, and the tool may become unusable. The cause of this is thought to be that repeated stress is concentrated in this part, and as a countermeasure to this problem, attempts have been made to give the inner surfaces of both ends of the slit 8 a surface finish, but a complete solution has not yet been achieved.

又この工具ホーンは共振現象を利用している為、横幅l
は、使用周波数によってとびとびの値をとり、溶着部の
長さ又は形状によって、プラスチックに傷がついたり、
溶着不完全となったりすることがあった。
Also, since this tool horn utilizes a resonance phenomenon, the width is
takes discrete values depending on the frequency used, and depending on the length or shape of the welded part, the plastic may be damaged or
In some cases, welding was incomplete.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

本発明は、スリットがなく従って亀裂の発生を防止でさ
、横幅lも使用周波数に関係なく自由に定めることので
さる工具ホーンを提供することにある。
SUMMARY OF THE INVENTION The object of the present invention is to provide a tool horn that does not have slits, thereby preventing the occurrence of cracks, and whose width l can be freely determined regardless of the operating frequency.

〔課題を解決するための手段〕[Means to solve the problem]

本発明による課題を解決するための手段は、使用超音波
振動の波長で、縦幅が1/2波長、横幅が1/4波長以
上、厚さが1/6波長以下の板状体であって)加振面が
上記の縦幅及び横幅を有する正面及び背面からみて、中
央が高い左右対称の山形をなし、正面及び背面の、前記
山の裾と放射面との間に、横幅方向に一列に、中央に凸
部と、その左右に凹部が、左右対称に、正面及び背面で
同一に形成されている超音波溶着機用工具ホーン、及び
使用超音波振動の波長で、縦幅が172波長、横幅が1
/4波長以上、厚さが176波長以下の板状体であって
、加振面が、上記の縦幅及び横幅を有する正面及び背面
からみて、中央とその左右に頂部を有する左右対称の波
形をなし、正面及び背面の、前記波形の谷と放射面との
間に、横幅方向に一列に、前記波形の中央の頂部に対応
する位置に凸部が、前記波形の傾斜部の途中から谷に対
応する位置に凹部が、前記波形の中央の頂部の左右にあ
る頂部に対応する位置に凸部が、順次に前記波形に対応
して左右対称に、正面及び背面で同一に形成されている
超音波溶着機用工具ホーンにある。
Means for solving the problems according to the present invention is a plate-shaped body having a vertical width of 1/2 wavelength, a horizontal width of 1/4 wavelength or more, and a thickness of 1/6 wavelength or less at the wavelength of the ultrasonic vibration used. ) The excitation surface has the above-mentioned vertical and horizontal widths, and forms a symmetrical mountain shape with a high center when viewed from the front and back, and between the foot of the mountain and the radiation surface on the front and back, in the width direction. A tool horn for an ultrasonic welding machine in which a convex part in the center and concave parts on the left and right sides are formed symmetrically in a line and are the same on the front and back sides, and the vertical width is 172 mm at the wavelength of the ultrasonic vibration used. Wavelength and width are 1
A plate-shaped body with a thickness of /4 wavelengths or more and a thickness of 176 wavelengths or less, and the excitation surface has a symmetrical waveform with peaks at the center and to the left and right of the center when viewed from the front and back sides having the above-mentioned vertical and horizontal widths. A convex portion is formed in a row in the width direction between the trough of the waveform and the radiation surface on the front and back sides at a position corresponding to the central peak of the waveform, and a trough is formed from the middle of the slope of the waveform. A concave portion is formed at a position corresponding to the central apex of the waveform, and a convex portion is formed at a position corresponding to the apex on the left and right sides of the central apex of the waveform. Found in the tool horn for ultrasonic welding machines.

〔作用〕[Effect]

本発明は、振動モードの解析を縦幅が172波長、横幅
が1/4波長以上、厚さが1/6波長以下の板状体に限
定して、有限要素法により解析を行ない、多数のシュミ
レーション3行なった。第7図がら第8図に示す振動モ
ードの解析図は、何れも仮状の工具ホーンの加振面の中
央に振動子を結合して振動させた場合の加振点から右半
分の振動モードを示したものである。これらの図におい
て、実線は静止状態を、点線は動作(振動)状態を示し
たものである。第7図はスリットを有しない表面が平ら
な矩形の板からなる工具ホーンを振動させた場合であっ
て、両端(図では右端、以下同じ)で大さく歪むことが
判る。第8図は第1〜3図に示した実施例の振動モード
な示したもので、正面3からみて振動子を結合する部分
を頂部とする左右対称な山形に加振面1を形成し、この
山に対応して正面3及び背面4に同一の、凸部5及び凹
部6を形成すると、放射面2を均一に振動させることが
出来ることを見いだしたものである。第9図は、正面3
及び背面4が平らな板の加振面1に、中央と両端に山な
作りその間に谷を有する波形としたものである。この場
合には、谷に相対する放射面2では振動が殆ど生ぜず、
その両側では大きく振動し、放射面2が均一に振動しな
いことが判る。
The present invention limits the vibration mode analysis to a plate-shaped body with a vertical width of 172 wavelengths, a horizontal width of 1/4 wavelength or more, and a thickness of 1/6 wavelength or less, and performs analysis using the finite element method to analyze a large number of vibration modes. I did 3 simulations. The analysis diagrams of the vibration modes shown in Figures 7 and 8 are the vibration modes in the right half from the excitation point when a vibrator is coupled to the center of the excitation surface of a temporary tool horn and vibrated. This is what is shown. In these figures, solid lines indicate a stationary state, and dotted lines indicate a moving (vibrating) state. FIG. 7 shows a case where a tool horn made of a rectangular plate with a flat surface and no slits is vibrated, and it can be seen that it is greatly distorted at both ends (the right end in the figure, the same applies hereinafter). FIG. 8 shows the vibration mode of the embodiment shown in FIGS. 1 to 3, in which the excitation surface 1 is formed in a symmetrical chevron shape with the portion where the vibrator is coupled as the top when viewed from the front 3. It has been discovered that if the same convex portions 5 and concave portions 6 are formed on the front surface 3 and the rear surface 4 in correspondence with these peaks, the radiation surface 2 can be vibrated uniformly. Figure 9 shows front view 3
The excitation surface 1 of a plate with a flat back surface 4 has a corrugated shape with ridges at the center and both ends and troughs in between. In this case, almost no vibration occurs on the radiation surface 2 facing the valley,
It can be seen that the radiation surface 2 does not vibrate uniformly because it vibrates greatly on both sides.

第10図は、第4〜6図に示した実施例の振動モードを
示したもので、正面3及び背面4の、加振面1の中央の
山に対応する部分には、凸部5を、加振面1の両端の山
に対応する部分には凸部7を、加振面1の中央の山の裾
から谷にかけてに対応する部分には凹部6を形成すると
、放射面2が均一に振動することを示すものである。
Fig. 10 shows the vibration mode of the embodiment shown in Figs. By forming convex portions 7 in the portions corresponding to the peaks at both ends of the excitation surface 1, and forming concave portions 6 in the portion corresponding to the valley from the base of the central peak of the excitation surface 1, the radiation surface 2 can be made uniform. This shows that it vibrates.

〔実施例〕〔Example〕

実施例1第1図ないし第3図は、請求項(1)に対応する実施例
な示したものである。使用超音波振動の波長で、縦幅り
が172波長、横幅lが1/4波長以上、厚さTが17
6波長以下の板状体の長平方向に沿う一側面を加振面1
とし、加振面1を、縦幅り及び横幅tfr:’:xする
正面3及び背面4からみて、中央が高い左右対称の山形
に形成しである。正面3及び背面4の、前記用の裾と、
放射面2との間に、横幅!方向に一列に、中央に凸部5
と、その左右に凹部6が、左右対称に正面3及び背面4
で同一に形成されている。凹部6は両端側半分が中央側
よりも深くなっている。この図形は、材質をジュラルミ
ンとし、18.362 KH2で、厚さT45鼎、横幅
1255 止、縦幅L 160.2 Mでシュミレーシ
ョンして得たものである。横幅!及び縦幅りが多少大さ
くても小さくても、同様に加振面2がほぼ均一に振動す
る。
Embodiment 1 FIGS. 1 to 3 show an embodiment corresponding to claim (1). The wavelength of the ultrasonic vibration used is 172 wavelengths in length, 1/4 wavelength or more in width l, and 17 in thickness T.
One side along the longitudinal direction of the plate-shaped body with 6 wavelengths or less is the excitation surface 1
The excitation surface 1 is formed into a symmetrical chevron shape with a high center when viewed from the front 3 and back 4 with vertical and horizontal widths tfr:':x. The hem for the front side 3 and the back side 4,
Width between radiation surface 2! Convex portion 5 in the center in a row in the direction
and a recess 6 on the left and right sides, and a front 3 and a back 4 symmetrically.
are formed identically. The recessed portion 6 is deeper at both end halves than at the center. This figure was obtained by simulation using duralumin as the material, 18.362 KH2, thickness T45, width 1255 mm, and vertical width L 160.2 M. Width! Even if the vertical width is somewhat large or small, the excitation surface 2 vibrates almost uniformly.

実施例2第4図ないし第6図は請求項(2)に対応する実施例3
示したものである。縦幅りが172波長、横幅lが1/
4波長以上、厚さTが176波長以下の板状体の長平方
向に沿う一側面を加振面1とし、加振面1を、縦幅り及
び横幅tを有する正面3及び背面4からみて、中央とそ
の左右に頂部を有する左右対称の波形に形成しである。
Example 2 FIGS. 4 to 6 are Example 3 corresponding to claim (2)
This is what is shown. The vertical width is 172 wavelengths, and the horizontal width l is 1/
One side along the longitudinal direction of a plate-shaped body having 4 wavelengths or more and a thickness T of 176 wavelengths or less is an excitation surface 1, and the excitation surface 1 is viewed from a front surface 3 and a rear surface 4 having a vertical width and a horizontal width t. It is formed into a symmetrical waveform with a center and peaks on either side.

正面3及び背面4の、前記波形の谷と放射面2との間に
、横幅方向に一列に、前記波形の中央の頂部に対応する
位置に凸部5を、前記波形の傾斜部の途中から谷に対応
する位置に凹部6を、前記波形の中央の頂部の左右にあ
る頂部に対応する位置に凸部7を、順次に前記波形に対
応して左右対称に、正面3及び背面4で同一に形成され
ている。左右両端の凸部7は中央側半分が外側半分より
ちゃ〈低くなっている。この図形は、材質をジュラルミ
ンとし、使用周波数18.360 KHzで、厚さT4
0mfl、縦幅L152mm 、横幅1400 ”でシ
ュミレーションして得たものである。この場合も、縦幅
L1横幅tが多少大さくても、小さくても、放射面2企
均−に振動させることが出来る。又、横幅tが更に長い
場合には、放射面2で振動が均一となるように、シュミ
レーションにより、谷や山を左右に連続して形成すると
共に、それに対応して正面3及び背面4に凹部や凸部を
形成することができる。
On the front face 3 and back face 4, between the trough of the waveform and the radiation surface 2, a convex part 5 is arranged in a row in the width direction at a position corresponding to the central peak of the waveform, and from the middle of the slope part of the waveform. Concave portions 6 are formed at positions corresponding to the valleys, and convex portions 7 are formed at positions corresponding to the apexes on the left and right of the central apex of the waveform. is formed. The center half of the convex portions 7 on both the left and right ends is much lower than the outer half. This figure is made of duralumin, has a working frequency of 18.360 KHz, and has a thickness of T4.
0mfl, height L152mm, and width 1400''.In this case, even if the vertical width L1 and the horizontal width t are somewhat larger or smaller, it is possible to vibrate the radiation surface 2 evenly. In addition, if the width t is even longer, in order to make the vibration uniform on the radiation surface 2, by simulation, valleys and peaks are formed continuously on the left and right, and the front surface 3 and rear surface 4 are formed in a corresponding manner. Concave portions and convex portions can be formed on the surface.

〔発明の効果〕〔Effect of the invention〕

本発明工具ホーンによれば、スリットが無いので亀裂が
発生しにくい。従って、工具寿命を著しく大きくでさる
。スリットがないので工具ホーンの横幅を使用周波数に
無関係に取ることが出来るので、必要な溶着長さに一致
した工具ホーンを提供できる。放射面を溶着面に合わせ
て途中を一部切り欠く場合、スリットがあるとスリット
の端から切り欠きまでが薄くなり、亀裂が発生しゃすい
問題があったが、この問題も無くなる。
According to the tool horn of the present invention, since there is no slit, cracks are less likely to occur. Therefore, the tool life is significantly increased. Since there is no slit, the width of the tool horn can be adjusted regardless of the operating frequency, so a tool horn that matches the required welding length can be provided. When aligning the radiation surface with the welding surface and cutting out part of the way, if there was a slit, the area from the end of the slit to the notch would be thin, which caused cracks to easily occur, but this problem is also eliminated.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明工具ホーンの実施例1の正面図、第2図
は第1図の上面図、第3図は第1図の右側面図、第4図
は本発明工具の実施例2の正面図、第5図は第4図の上
面図、第6図は第4図の右側面図、第7図は正面及び背
面に凸部、凹部がなくスリットもない表面が平らな板を
加振面1で振動せしめた場合のシュミレーション図、第
8図は実施例1のシュミレーション図、第9図は加振面
1に左右対称に2個の谷を有する正面、背面が平らな飯
のシュミレーション図、第10図は実施例2のシュミレ
ーション図、第11図はスリットを有する従来の工具ホ
ーンの正面図、第12図は第11図の右側面図である。L・・縦幅 l・・横幅 T・・厚さl・・加振面 2・・放射面 3・・正面4・・背面 
5・・凸部 6・・凹部 7・・凸部8・・スリット 
S・・スリット幅W・・スリット間の幅t・・スリットの両端がら加振面、放射面までの距離
Figure 1 is a front view of Example 1 of the tool horn of the present invention, Figure 2 is a top view of Figure 1, Figure 3 is a right side view of Figure 1, and Figure 4 is Example 2 of the tool of the present invention. Fig. 5 is a top view of Fig. 4, Fig. 6 is a right side view of Fig. 4, and Fig. 7 shows a flat plate with no protrusions, recesses, or slits on the front and back sides. Fig. 8 is a simulation diagram of Example 1 when vibration is made on the excitation surface 1, and Fig. 9 is a simulation diagram of a rice plate with two symmetrical valleys on the excitation surface 1 with a flat front and back surface. 10 is a simulation diagram of the second embodiment, FIG. 11 is a front view of a conventional tool horn having a slit, and FIG. 12 is a right side view of FIG. 11. L... Vertical width l... Width T... Thickness l... Excitation surface 2... Radiation surface 3... Front 4... Back
5. Convex portion 6. Concave portion 7. Convex portion 8. Slit
S...Slit width W...Width between slits t...Distance from both ends of the slit to the excitation surface and radiation surface

Claims (2)

Translated fromJapanese
【特許請求の範囲】[Claims](1)使用超音波振動の波長で、縦幅が1/2波長、横
幅が1/4波長以上、厚さが1/6波長以下の板状体で
あつて、加振面が、上記の縦幅及び横幅を有する正面及
び背面から見て、中央が高い左右対称の山形をなし、正
面及び背面の、前記山の裾と放射面との間に、横幅方向
に一列に、中央に凸部と、その左右に凹部が、左右対称
に、正面及び背面で同一に形成されている超音波溶着機
用工具ホーン。
(1) A plate-shaped body with a vertical width of 1/2 wavelength, a horizontal width of 1/4 wavelength or more, and a thickness of 1/6 wavelength or less at the wavelength of the ultrasonic vibration used, and the excitation surface is one of the above A symmetrical mountain shape with a high center when viewed from the front and back having vertical and horizontal widths, and a convex part in the center in a line in the width direction between the foot of the mountain and the radial surface on the front and back. A tool horn for an ultrasonic welding machine, in which concave portions are formed symmetrically on the left and right sides, and are the same on the front and back sides.
(2)使用超音波振動の波長で、縦幅が1/2波長、横
幅が1/4波長以上、厚さが1/6波長以下の板状体で
あつて、加振面が、上記の縦幅及び横幅を有する正面及
び背面から見て、中央とその左右に頂部を有する左右対
称の波形をなし、正面及び背面の、前記波形の谷と放射
面との間に、横幅方向に一列に、前記波形の中央の頂部
に対応する位置に凸部が、前記波形の傾斜部の途中から
谷に対応する位置に凹部が、前記波形の中央の頂部の左
右にある頂部に対応する位置に凸部が、順次に前記波形
に対応して左右対称に、正面及び背面で同一に形成され
ている超音波溶着機用工具ホーン。
(2) A plate-shaped body with a vertical width of 1/2 wavelength, a horizontal width of 1/4 wavelength or more, and a thickness of 1/6 wavelength or less at the wavelength of the ultrasonic vibration used, and whose excitation surface is the same as above. When viewed from the front and back, the waveform has a symmetrical waveform having a center and peaks on the left and right sides thereof, and is arranged in a line in the width direction between the trough of the waveform and the radial surface on the front and back. , a convex portion at a position corresponding to the central peak of the waveform, a concave portion at a position corresponding to a trough from the middle of the slope of the waveform, and a convex portion at a position corresponding to the peaks on the left and right of the central peak of the waveform. A tool horn for an ultrasonic welding machine, in which portions are formed symmetrically and identically on the front and back surfaces in accordance with the waveform.
JP63057657A1988-03-111988-03-11Tool horn for supersonic welding machineGrantedJPH01316249A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP63057657AJPH01316249A (en)1988-03-111988-03-11Tool horn for supersonic welding machine

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP63057657AJPH01316249A (en)1988-03-111988-03-11Tool horn for supersonic welding machine

Publications (2)

Publication NumberPublication Date
JPH01316249Atrue JPH01316249A (en)1989-12-21
JPH0469870B2 JPH0469870B2 (en)1992-11-09

Family

ID=13061970

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP63057657AGrantedJPH01316249A (en)1988-03-111988-03-11Tool horn for supersonic welding machine

Country Status (1)

CountryLink
JP (1)JPH01316249A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US5643801A (en)1992-11-061997-07-01Semiconductor Energy Laboratory Co., Ltd.Laser processing method and alignment

Also Published As

Publication numberPublication date
JPH0469870B2 (en)1992-11-09

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