JPS6140509Y2 - - Google Patents

Info

Publication number
JPS6140509Y2
JPS6140509Y2 JP1981028119U JP2811981U JPS6140509Y2 JP S6140509 Y2 JPS6140509 Y2 JP S6140509Y2 JP 1981028119 U JP1981028119 U JP 1981028119U JP 2811981 U JP2811981 U JP 2811981U JP S6140509 Y2 JPS6140509 Y2 JP S6140509Y2
Authority
JP
Japan
Prior art keywords
presser roller
horn
processing
presser
control signal
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
Application number
JP1981028119U
Other languages
Japanese (ja)
Other versions
JPS57141018U (en
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 filed Critical
Priority to JP1981028119U priority Critical patent/JPS6140509Y2/ja
Publication of JPS57141018U publication Critical patent/JPS57141018U/ja
Application granted granted Critical
Publication of JPS6140509Y2 publication Critical patent/JPS6140509Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/087Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using both a rotary sonotrode and a rotary anvil
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General 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
    • B29C66/816General 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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161General 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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/82Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822Transmission mechanisms
    • B29C66/8221Scissor or lever mechanisms, i.e. involving a pivot point
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/82Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822Transmission mechanisms
    • B29C66/8226Cam mechanisms; Wedges; Eccentric mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411Roller, cylinder or drum types
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/84Specific machine types or machines suitable for specific applications
    • B29C66/845C-clamp type or sewing machine type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411Roller, cylinder or drum types
    • B29C66/83413Roller, cylinder or drum types cooperating rollers, cylinders or drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Description

【考案の詳細な説明】 この考案は超音波振動子に固着された加工用ホ
ーンの加工面と押えローラとによりシート状の被
加工物を挾持して、加工用ホーンに超音波振動を
付与しつつ被加工物を送ることにより被加工物を
溶着する超音波加工機においてその被加工物を挾
まず即ち無負荷にて駆動せしめたときの安全性を
図る無負荷発振防止装置に関し、特に押えローラ
を回動可能に支持してそれと電気的に接続された
軸受に弾性接触子を介して制御信号発生回路を接
続し、以て既存の構成部品を巧みに利用しつつし
かも確実に作動する超音波加工機の無負荷発振防
止装置に関する。
[Detailed description of the invention] This invention clamps a sheet-shaped workpiece between the processing surface of a processing horn fixed to an ultrasonic vibrator and a presser roller, and applies ultrasonic vibration to the processing horn. In an ultrasonic processing machine that welds workpieces by feeding the workpieces while moving the workpieces, the device relates to a no-load oscillation prevention device that ensures safety when the workpieces are driven without being pinched, that is, with no load. A control signal generation circuit is connected via an elastic contact to a bearing that is rotatably supported and electrically connected to the bearing, thereby making effective use of existing components and producing ultrasonic waves that operate reliably. This invention relates to a no-load oscillation prevention device for processing machines.

従来、この種の超音波加工機においては、その
加工用ホーンの加工面と押えローラとにより被加
工物を挾持した正常な状態にて駆動せしめたとき
には、加工用ホーンに付与される超音波振動も、
被加工物を溶着せしめるのに費やされるが、この
被加工物を挾持せずに無負荷にて駆動せしめたと
きには、上記超音波振動が押えローラに直接伝達
されるため押えローラ或いは加工用ホーンの加工
面を損壊させて工具寿命を短かくするとともに騒
音の原因となる等の問題を生じていた。
Conventionally, when this type of ultrasonic processing machine is operated in a normal state in which a workpiece is held between the processing surface of the processing horn and a presser roller, the ultrasonic vibrations applied to the processing horn are too,
The ultrasonic vibrations are spent welding the workpiece, but when the workpiece is not clamped and is driven without load, the ultrasonic vibrations are directly transmitted to the presser roller, so the presser roller or processing horn is This has caused problems such as damaging the machined surface, shortening the tool life, and causing noise.

この考案は上述の問題を解決して更に一層の効
果を奏すべくなされたものであり、以下にその一
実施例を詳細に説明する。
This invention was devised to solve the above-mentioned problems and achieve further effects, and one embodiment thereof will be described in detail below.

図において、1は機枠の一部を構成する作業台
であり、ベツド2を固定している。ベツド2の上
部にはアーム3が一体に形成されるとともに下部
にはモータ4が固定されている。モータ4にはプ
ーリ5が連結され、ベルト6を介してアーム3内
に支持された主軸7を回転しうるように構成され
ている。主軸7の第1図において左端にはプーリ
8が固定され、このプーリ8はベルト9を介して
アーム3のヘツド部10下方に配置された押えロ
ーラ11に作動的に連結されている。
In the figure, reference numeral 1 denotes a workbench that constitutes a part of the machine frame, and fixes the bed 2. An arm 3 is integrally formed in the upper part of the bed 2, and a motor 4 is fixed to the lower part. A pulley 5 is connected to the motor 4 and is configured to rotate a main shaft 7 supported within the arm 3 via a belt 6. A pulley 8 is fixed to the left end of the main shaft 7 in FIG.

前記アーム3のヘツド部10内には押え棒12
が上下方向に摺動可能に支持されており、押え棒
12の下端には、詳細には第2図に示す如く絶縁
材料により形成された二枚の支持板13a,13
bを同じく絶縁材料により形成された一枚の連結
板13cを挾んでいわゆる逆U字形の形態に固着
一体化して成る支持部材13を取付けている。ま
た、その支持板13a,13bには内輪14a、
外輪14bおよびこの両輪間に挾設した球体14
cの何れもが導電材料から成る軸受14を夫々埋
込み状態に固定していて、この軸受14,14に
よりやはり導電材料にて形成された前記押えロー
ラ11を回動可能に支持し、同時にこの押えロー
ラ11に軸受14,14を電気的に接続してい
る。15は一方の支持板13aに軸受14の外輪
14bに通ずる深さに穿設した穴で、此処に先ず
弾性接触子としてのコイルスプリング16を収め
て、このコイルスプリング16の先端部を上記軸
受14の外輪14bに電気的に接触させ、次いで
穴15には螺子17を螺挿してコイルスプリング
16を圧すると同時に電気的にもこのコイルスプ
リング16に接触させ、またこの折り螺子17の
頭部と支持部材13bの端面との間には端子18
を挾持して、これをリード線19を介して図示し
ない適宜の制御信号発生回路に接続している。こ
の制御信号発生回路は常には端子18の電位を接
地電位よりも高い電位に保持しており、その状態
では後述する超音波振動子27に高周波電流を供
給するための電源回路は動作状態に保持される。
A presser bar 12 is provided in the head portion 10 of the arm 3.
is supported slidably in the vertical direction, and at the lower end of the presser bar 12 are two support plates 13a and 13 made of an insulating material, as shown in FIG.
A supporting member 13 is attached to the support member 13, which is fixedly integrated with the connecting plate 13c, which is also made of an insulating material, in a so-called inverted U-shape. Further, the support plates 13a and 13b include an inner ring 14a,
Outer ring 14b and sphere 14 interposed between the two wheels
Each of the bearings 14 made of a conductive material is fixed in an embedded state, and these bearings 14, 14 rotatably support the presser roller 11, which is also made of a conductive material, and at the same time, the presser roller 11 is also made of a conductive material. Bearings 14, 14 are electrically connected to the roller 11. Reference numeral 15 denotes a hole bored in one support plate 13a to a depth that communicates with the outer ring 14b of the bearing 14.A coil spring 16 as an elastic contactor is first housed in this hole, and the tip of the coil spring 16 is inserted into the bearing 14. Then, the screw 17 is inserted into the hole 15 to press the coil spring 16 and at the same time to electrically contact the coil spring 16, and the head of the folding screw 17 and the support A terminal 18 is connected between the end face of the member 13b and the end face of the member 13b.
is held in between and connected via a lead wire 19 to an appropriate control signal generation circuit (not shown). This control signal generation circuit always maintains the potential of the terminal 18 at a potential higher than the ground potential, and in this state, the power supply circuit for supplying high-frequency current to the ultrasonic transducer 27, which will be described later, remains in an operating state. be done.

押えローラ11の一側にはV溝が一体に形成さ
れており、このV溝には押えローラ11より数百
μ程度大きい外径を有する断面円形の環状弾性部
材20が嵌装されている。一方、前記押え棒12
の中間部にはストツパ21が固定され、このスト
ツパ21とアーム3との間には押えばね22が介
在され、押え棒12を常に下方へ押圧している。
ストツパ21の下面には押え上げレバー23のカ
ム部が当接しており、このレバー23が第1図に
示すように上方へ上げられているときには押え棒
12は上方のリリース位置に掛止され、この状態
ではプーリ8と押えローラ11との間に掛けられ
たベルト9は緩んでいる。押え上げレバー23が
下方に下げられると押え棒12は押えばね22に
より下方へ押圧され、支持部材13を介して押え
ローラ11が第2図に示すように後述する加工用
ホーン28に圧接される。
A V-groove is integrally formed on one side of the presser roller 11, and an annular elastic member 20 having a circular cross section and having an outer diameter several hundred microns larger than the presser roller 11 is fitted into the V-groove. On the other hand, the presser bar 12
A stopper 21 is fixed to an intermediate portion of the arm 3, and a presser spring 22 is interposed between the stopper 21 and the arm 3 to constantly press the presser bar 12 downward.
A cam portion of a presser foot lifting lever 23 is in contact with the lower surface of the stopper 21, and when this lever 23 is raised upward as shown in FIG. 1, the presser foot bar 12 is latched at the upper release position. In this state, the belt 9 placed between the pulley 8 and the presser roller 11 is loose. When the presser foot lifting lever 23 is lowered, the presser bar 12 is pressed downward by the presser spring 22, and the presser roller 11 is pressed against a processing horn 28, which will be described later, via the support member 13, as shown in FIG. .

前記ベツド2の下面には第1図に示すように下
方へ垂下したフレーム1aが固定されている。こ
のフレーム1aの側面には一対のL状の支持体2
4が固定されている。この一対の支持体24には
図示しないベアリングを介して振動子組体25の
ケーシング26を上下方向の中心軸のまわりに回
転可能に支持している。このケーシング26内に
は超音波振動子27が一体的に固定されており、
その振動子27は高周波電力が供給されると上下
方向に超音波振動される。
A frame 1a hanging downward is fixed to the lower surface of the bed 2, as shown in FIG. A pair of L-shaped supports 2 are provided on the sides of this frame 1a.
4 is fixed. A casing 26 of a vibrator assembly 25 is rotatably supported by the pair of supports 24 via bearings (not shown) about a central axis in the vertical direction. An ultrasonic transducer 27 is integrally fixed within this casing 26,
The vibrator 27 is ultrasonically vibrated in the vertical direction when high frequency power is supplied.

前記超音波振動子27には上部が円筒状に形成
された加工用ホーン28が一体的に固着され、こ
の加工用ホーン28の上端面はこのホーン28の
振動方向と直交するように設けられた平坦な環状
の加工面29が形成されている。この加工面29
は前記作業台1およびベツド2に形成された円孔
30を通してベツド2の上面と同レベルになるよ
うに配置されるとともに、前記押えローラ11と
加工面29の回転中心から半径方向へ離れた位置
で対向するよう配置されている。また、第2図に
示すように押えローラ11と加工面29との当接
部においては押えローラ11と加工面29との回
転方向が一致し、後述する被加工物39を先方へ
直線的に送り得るように構成されている。
A machining horn 28 having a cylindrical upper portion is integrally fixed to the ultrasonic vibrator 27, and the upper end surface of the machining horn 28 is disposed perpendicular to the vibration direction of the horn 28. A flat annular processed surface 29 is formed. This processed surface 29
is arranged through a circular hole 30 formed in the workbench 1 and the bed 2 so as to be on the same level as the top surface of the bed 2, and is located at a position radially away from the center of rotation of the presser roller 11 and the processing surface 29. are arranged to face each other. Further, as shown in FIG. 2, at the contact portion between the presser roller 11 and the processing surface 29, the rotational directions of the presser roller 11 and the processing surface 29 are the same, and the workpiece 39, which will be described later, is linearly moved forward. It is configured so that it can be sent.

前記振動子組体25の下部には絶縁体31を挾
んで一対の集電リング32,33がケーシング2
6と一体に回転するように固定されている。これ
らの集電リング32,33にはフレーム1aに一
端が固定されたばね性を有する接触子34,35
がそれぞれ接触しており、接触子34,35の一
方は高周波発振装置(図示せず)のプラス極に接
続され、他方はマイナス極に接続されている。ま
た集電リング32,33のそれぞれは超音波振動
子27のそれぞれの極に接続されている。
At the bottom of the vibrator assembly 25, a pair of current collecting rings 32 and 33 are connected to the casing 2 with an insulator 31 in between.
It is fixed so that it rotates together with 6. These current collecting rings 32, 33 have spring contacts 34, 35 fixed at one end to the frame 1a.
are in contact with each other, one of the contacts 34 and 35 is connected to the positive pole of a high frequency oscillator (not shown), and the other is connected to the negative pole. Further, each of the current collecting rings 32 and 33 is connected to each pole of the ultrasonic vibrator 27.

ここで、前記フレーム1aは適宜アースされて
おり、従つてこのフレーム1aに前記支持体24
等も介して電気的に接続された加工用ホーン28
も接地電位に保持されている。
Here, the frame 1a is suitably grounded, and therefore the support 24 is connected to the frame 1a.
A machining horn 28 electrically connected to the
is also held at ground potential.

前記振動子組体25の下端にはプーリ36が一
体に固定されている。また、フレーム1aの下部
にはモータ37が固定され、前記プーリ36はベ
ルト38を介してモータ37に連結されている。
A pulley 36 is integrally fixed to the lower end of the vibrator assembly 25. Further, a motor 37 is fixed to the lower part of the frame 1a, and the pulley 36 is connected to the motor 37 via a belt 38.

このような構成においてシート状の熱可塑性樹
脂材料よりなる被加工物39を重ねて溶着する場
合には、まず、第1図に示すように押え上げレバ
ー23を押し上げて押えローラ11と弾性部材2
0を上方位置に保持する。そして二枚以上重ね合
せた被加工物39をベツド2上に載せて押えロー
ラ11と加工用ホーン28との間に置き、加工開
始位置を設定した上で押え上げレバー23を下ろ
すと弾性部材20は自身の弾性により押えローラ
11が被加工物39に当接するまで変形し、被加
工物39を押えローラ11および弾性部材20と
加工用ホーン28とで挾持する。この状態で加工
開始スイツチ(図示せず)を投入すると高周波発
振装置(図示せず)から接触子34,35および
集電リング32,33を介して超音波振動子27
に高周波電力が供給され、加工用ホーン28に上
下方向の超音波振動が付与され、その振動により
重ね合された被加工物39が溶着される。このと
き同時にモータ4および37にも通電されて、押
えローラ11と加工用ホーン28が加工部におい
て同方向へほぼ同速度で回転され、被加工物39
が順次送られつつ連続的に溶着される。このとき
弾性部材20は被加工物39に圧接されているた
め、被加工物39を押えローラ11の接線方向に
送るように作用し、被加工物39の直進性はきわ
めて良好なものとなる。
When welding the workpieces 39 made of sheet-like thermoplastic resin materials in such a configuration, first, as shown in FIG.
0 in the upper position. Then, two or more workpieces 39 stacked one on top of the other are placed on the bed 2 between the presser roller 11 and the machining horn 28, the machining start position is set, and the presser foot lifting lever 23 is lowered to release the elastic member 20. is deformed by its own elasticity until the presser roller 11 comes into contact with the workpiece 39, and the workpiece 39 is held between the presser roller 11, the elastic member 20, and the machining horn 28. When a processing start switch (not shown) is turned on in this state, a high frequency oscillator (not shown) sends an ultrasonic wave to the ultrasonic vibrator 27 via the contacts 34, 35 and the current collecting rings 32, 33.
High frequency power is supplied to the machining horn 28 to apply vertical ultrasonic vibrations, and the overlapping workpieces 39 are welded by the vibrations. At this time, the motors 4 and 37 are also energized, and the presser roller 11 and the machining horn 28 are rotated in the same direction at approximately the same speed in the machining section, and the workpiece 39
are successively fed and welded continuously. At this time, since the elastic member 20 is in pressure contact with the workpiece 39, it acts to feed the workpiece 39 in the tangential direction of the presser roller 11, and the straightness of the workpiece 39 is extremely good.

さて、以上に対し、ここで押えローラ11と加
工用ホーン28との間に被加工物39を挾まずに
駆動させようとした場合、その押えローラ11は
被加工物39を介さず直接加工用ホーン28の加
工面29に接触するため、これにより弾性接触子
としてのコイルスプリング16が電気的に軸受1
4から押えローラ11を介し加工用ホーン28に
通じて接地電位となり、よつてコイルスプリング
16に螺子17や端子18およびリード線19を
介して接続された図示しない制御信号発生回路か
らは、上記加工用ホーン28の接地点まで制御信
号としての例えば微電流が流れ、これに基づいて
前記高周波発振装置から超音波振動子27への高
周波電力の供給が停止される。故に加工用ホーン
28からの超音波振動の付与も行なわれないので
ある。
Now, in contrast to the above, if it is attempted to drive the workpiece 39 without sandwiching it between the presser roller 11 and the machining horn 28, the presser roller 11 can be directly used for machining without intervening the workpiece 39. Since it comes into contact with the machined surface 29 of the horn 28, the coil spring 16 as an elastic contact is electrically connected to the bearing 1.
4 to the machining horn 28 via the presser roller 11, and is connected to the ground potential. For example, a small current as a control signal flows to the ground point of the commercial horn 28, and based on this, the supply of high frequency power from the high frequency oscillator to the ultrasonic vibrator 27 is stopped. Therefore, no ultrasonic vibration is applied from the machining horn 28.

なお、以上のようにして高周波発振装置から超
音波振動子27への高周波電力の供給を停止させ
るとき、同時にモータ4およびモータ37の運
転、換言すれば押えローラ11と加工用ホーン2
8の回転をも停止させるようにしても良い。ま
た、その押えローラ11と加工用ホーン28とに
ついては、そのうちの一方のみをモータによつて
回転駆動し、他方はそれに連動させて回転させる
ようにしても良い。さらに、弾性接触子もコイル
スプリング16以外、例えば板ばね等を用いるよ
うにしても良い。
Note that when the high-frequency power supply from the high-frequency oscillator to the ultrasonic transducer 27 is stopped as described above, the motor 4 and the motor 37 are simultaneously operated, in other words, the presser roller 11 and the machining horn 2 are stopped.
8 may also be stopped. Further, regarding the presser roller 11 and the machining horn 28, only one of them may be driven to rotate by a motor, and the other may be rotated in conjunction with the motor. Furthermore, the elastic contactor may also be made of other than the coil spring 16, such as a plate spring.

以上詳述したように、この考案による超音波加
工機の無負荷発振防止装置は、押えローラが加工
用ホーンに接触することによつて、その押えロー
ラを回動可能に支持した軸受に電気的に接触され
た弾性接触子が加工用ホーンと同じ接地電位とな
つたとき、その弾性接触子に接続された制御信号
発生回路からの制御信号により超音波振動子への
高周波電力の供給を停止するようしたことを特徴
とするものであつて、これにより前記押えローラ
と加工用ホーンとの間に被加工物を挾まず駆動せ
しめたときの押えローラの或いは加工用ホーンの
損壊等を防止することができ、しかもそれには押
えローラを回動可能に支持する軸受がその押えロ
ーラと電気的にも接続されていることに着目して
この軸受や押えローラならびに加工用ホーンとい
う既存の構成部品を巧みに利用しているので構造
の複雑化を充分に抑制でき、さらには上記軸受に
は弾性接触子が接触していてこの弾性接触子に制
御信号発生回路を接続しているから振動等に対し
ても追従性が良く確実に作動せしめ得るのであ
る。
As detailed above, the no-load oscillation prevention device for an ultrasonic processing machine according to this invention is such that when the presser roller comes into contact with the machining horn, the bearing that rotatably supports the presser roller receives an electric charge. When the elastic contact brought into contact with the processing horn reaches the same ground potential as the processing horn, the supply of high-frequency power to the ultrasonic vibrator is stopped by a control signal from the control signal generation circuit connected to the elastic contact. This is a feature of the present invention, which prevents damage to the press roller or the machining horn when the workpiece is driven without being sandwiched between the press roller and the machining horn. Moreover, by focusing on the fact that the bearing that rotatably supports the presser roller is electrically connected to the presser roller, we cleverly modified existing components such as the bearing, the presser roller, and the machining horn. Since the bearing is used for the above-mentioned purpose, the complexity of the structure can be sufficiently suppressed.Furthermore, since the above-mentioned bearing is in contact with an elastic contact and the control signal generation circuit is connected to this elastic contact, it can be easily resistant to vibrations, etc. It also has good followability and can be operated reliably.

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

第1図はこの考案の一実施例を示す一部破断し
た要部正面図、第2図は部分拡大断面図である。 図中、11は押えローラ、13は支持部材、1
4は軸受、16はコイルスプリング(弾性接触
子)、25は振動子組体、27は超音波振動子、
28は加工用ホーン、29は加工面である。
FIG. 1 is a partially cutaway front view of the main part showing an embodiment of this invention, and FIG. 2 is a partially enlarged sectional view. In the figure, 11 is a presser roller, 13 is a support member, 1
4 is a bearing, 16 is a coil spring (elastic contactor), 25 is a transducer assembly, 27 is an ultrasonic transducer,
28 is a processing horn, and 29 is a processing surface.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 高周波発生装置から高周波電力が供給されて超
音波振動する振動子と、その振動子に固着される
とともに接地電位に保持された加工用ホーンと、
その加工用ホーンの加工面と協働してシート状の
被加工物を挾持する導電材料にて形成された押え
ローラと、その押えローラと電気的に接続されそ
の押えローラを回動可能に支持する軸受と、その
軸受を固定するとともに前記押えローラを前記加
工面に対して接離可能に支持した絶縁材料により
形成された支持部材と、前記軸受に電気的に接触
した弾性接触子と、その弾性接触子に接続された
制御信号発生回路とを設け、前記押えローラが加
工用ホーンに接触して前記弾性接触子が接地電位
となつたとき、前記制御信号発生回路からの制御
信号により前記振動子への高周波電力の供給を停
止するようにしたことを特徴とする超音波加工機
の無負荷発振防止装置。
A vibrator that vibrates ultrasonically when high-frequency power is supplied from a high-frequency generator; a processing horn that is fixed to the vibrator and held at ground potential;
A presser roller made of a conductive material that cooperates with the machining surface of the processing horn to clamp the sheet-like workpiece, and is electrically connected to the presser roller and rotatably supports the presser roller. a support member formed of an insulating material that fixes the bearing and supports the presser roller so as to be able to move toward and away from the processing surface; an elastic contact that electrically contacts the bearing; and a control signal generating circuit connected to the elastic contact, and when the presser roller contacts the processing horn and the elastic contact reaches the ground potential, the control signal from the control signal generating circuit generates the vibration. A no-load oscillation prevention device for an ultrasonic processing machine, characterized in that the supply of high-frequency power to the child is stopped.
JP1981028119U 1981-02-27 1981-02-27 Expired JPS6140509Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1981028119U JPS6140509Y2 (en) 1981-02-27 1981-02-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1981028119U JPS6140509Y2 (en) 1981-02-27 1981-02-27

Publications (2)

Publication Number Publication Date
JPS57141018U JPS57141018U (en) 1982-09-03
JPS6140509Y2 true JPS6140509Y2 (en) 1986-11-19

Family

ID=29825792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1981028119U Expired JPS6140509Y2 (en) 1981-02-27 1981-02-27

Country Status (1)

Country Link
JP (1) JPS6140509Y2 (en)

Also Published As

Publication number Publication date
JPS57141018U (en) 1982-09-03

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