JP4643575B2 - ろ紙の全長をシールするための超音波ユニット - Google Patents

ろ紙の全長をシールするための超音波ユニット Download PDF

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JP4643575B2
JP4643575B2 JP2006520922A JP2006520922A JP4643575B2 JP 4643575 B2 JP4643575 B2 JP 4643575B2 JP 2006520922 A JP2006520922 A JP 2006520922A JP 2006520922 A JP2006520922 A JP 2006520922A JP 4643575 B2 JP4643575 B2 JP 4643575B2
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sealing
sonotrode
web
roller
filter paper
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JP2006528094A (ja
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カローリ，ロドルフォ
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イ．エンメ．ア．インドゥストリア マッキーネ アウトマティケ ソチエタ ペル アツィオニ
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    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • B29C65/083—Joining 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
    • B29C65/086—Joining 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 a rotary anvil
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint 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
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial joints
    • 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
    • B29C66/40—General 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
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • 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
    • B29C66/40—General 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
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/40—General 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
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • 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
    • B29C66/81463—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 comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81469—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 comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed next to the other in a single line transverse to the feed direction, e.g. shoulder to shoulder sonotrodes
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General 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
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9261—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools
    • B29C66/92611—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by controlling or regulating the gap between the joining tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F5/00—Attaching together sheets, strips or webs; Reinforcing edges
    • B31F5/008—Attaching together sheets, strips or webs; Reinforcing edges by friction, e.g. obtained ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • B65B29/028—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into filter bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
    • B65B51/225—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding by ultrasonic welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • B29C66/92431—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being kept constant over time
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9261—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools
    • B29C66/92611—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by controlling or regulating the gap between the joining tools
    • B29C66/92613—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by controlling or regulating the gap between the joining tools the gap being kept constant over time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7122—Tea bags

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Package Closures (AREA)
  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

本発明は、ろ紙の全長をシールするための超音波ユニットに関する。
特に、紅茶、カモミール（camomile）等の浸出製品の入っているフィルターバッグ又は袋を作るための機械において実行されるシールプロセスに関する。
ろ紙のウェブからフィルターバッグを作るための従来の機械は、ろ紙のウェブの供給ステーションと、折り曲げステーションと、第一ステーションを含む複数のステーションを備えていて、その第一ステーションは、ろ紙の連続した管状ラッピングを形成するために、折り曲げられたウェブを長手方向にシールするためのものであり、かつほぼ平らな形状の一連のフィルターバッグを形成するために、連続した管状を横断方向にシールするためのものである。
長手方向及び横断方向のシールステーションは、ろ紙の連続した管状ラッピング長手方向及び横断方向にシールするためのトラックを備えた特別に成形された上部ローラを有している。シールは加熱式シール手段により、又は最新の方法ではシールする製品に接触して位置決めされたソノトロードにより行なうことができる。
実際的には、ソノトロードは供給電力を、シールする製品に放出される振動に変換するトランスデューサである。
ソノトロードに基づく現在のシールユニットは、両側シールを可能にするべく並行して設置された一対のソノトロードを備えている。ソノトロードは、各ソノトロードとろ紙との間のギャップを可能な限り一定にするために、ローラに対面し剛な構造体に取り付けられるように設置されている。
出願者は、ソノトロードの放出面と製品の支持面との間の相対位置が、優れたシール性能の基本的な変数であることを発見した。
しかしながら、ソノトロードに基づく現在のシールユニットは、ソノトロードに作用する力を制御するための多重のセンサと装置とを備えた著しく剛な支持装置を含んでいて、相対位置を固定し一定に保つことを非常に困難なものにしている。
実際のところ、支持装置はろ紙のような非常に薄い材料に対しては不適切なものである。というのは、ソノトロードと製品との間の距離を維持するための、剛なサポート及び多くの外的制御変数が振動を引き起こしていて、その振動は優れたシール性能に対して許容可能なものより大きな距離をもたらし、そしてソノトロードと制御装置との間の制御及びフィードバックのためにシール操作のスローダウンをもたらしている。
従って本発明の目的は、シールする製品に対してシール用ソノトロードがほぼ一定の接触力を作用可能であり、同時に操作速度が早く、コストを低減可能な装置により、前述の欠点を克服することである。
この目的は、本発明による浸出製品用のろ紙をシールするためのシールユニットにより達成されていて、シールユニットは、少なくとも、成形した回転用のローラとシール用ソノトロード手段とを具備していて：該ローラは、該ローラの下方を移動する折り曲げられたろ紙のウェブに対して、該シール用ソノトロード手段を用いて長手方向及び横断方向の接触シールをするためにガイドとして作用する円周方向及び半径方向のトラックを備えていて、該シール用ソノトロード手段は、ろ紙の管状ウェブを形成し一連のほぼ平らなフィルターバッグがウェブ上に成形されるように、該ローラの下方で移動している該ウェブに近接したシール位置に配置されており；該シール用ソノトロード手段は、適切な手段を介して変数を制御するようになっている流体駆動手段により作動されていて、該変数は、接触力及び／又は該シール用ソノトロードと該ローラとの間の距離により構成されている。
本発明の技術的特徴は、以下の特許請求の範囲に明瞭に説明されていて、その利点は添付図面を参照した以下の説明により理解される。なお、添付図面は単に例として好適な実施形態を説明するものであって、本発明の範囲を限定するものではない。
添付図面、特に図１において、本発明によるシールユニットは浸出製品用のフィルターバッグをシールするために使用される。
より詳しくは、全体を符号１で図示するシールユニットは、ろ紙（５）（点線で図示する）のウェブに長手方向シールと横断方向シールとを作るために使用されていて、そのろ紙５はろ紙のロールからほどかれ、そして適切なステーションにおいて折り曲げられたものである（ロール及びステーションのどちらも図示ない）。
シールユニット１が、成形した回転用のローラ２とシール用ソノトロード手段６とを具備していて：
該ローラ２は、該ローラ２の下方を移動する折り曲げられたろ紙のウェブ５に対して、該シール用ソノトロード手段６を用いて長手方向及び横断方向の接触シールをするためにガイドとして作用する円周方向及び半径方向のトラック３，４を備えていて、
該シール用ソノトロード手段６は、ろ紙の管状ウェブを形成し一連のほぼ平らなフィルターバッグがウェブ上に成形されるように、該ローラ２の下方で移動している該ウェブ５に近接したシール位置に配置されている。
図１において、該シール用ソノトロード手段６は、適切な手段を介して変数を制御するようになっている流体駆動手段７により作動されていて、該変数は、接触力及び／又は該シール用ソノトロード６と該ローラ２との間の距離により構成されている。
より詳しくは、該流体駆動手段７は少なくとも一つの空気式シリンダ７ｃから構成されていて、該少なくとも一つの空気式シリンダ７ｃは、端部の一方において固定された下段フレーム９に連結され、そして端部の他方において該シール用ソノトロード６の上部に連結されている。
図２及び３に図示するように、シール用ソノトロード手段６が、二つの独立したシール操作を実行できるように、並行して取り付けられた二つの独立したソノトロードユニット６ａ及び６ｂであって、その二つの独立したソノトロードユニット６ａ及び６ｂは、通過する製品と前述のトラック３及び４とに接触しているそれぞれのプレート６ｃ，６ｄと共に作用して、長手方向シール（ユニット６ａにより作られる）と横断方向シール（ユニット６ｂにより作られる）とをもたらしている。
第一ソノトロード６ａがローラ２における円周方向トラック３に対してウェブ５に一様に接触していて、一方第二ソノトロード６ｂはウェブ５から離間していて、かつ半径方向トラック４の通過ごとに横断シールを作るようになっている。
ソノトロードユニット６ａ及び６ｂが、固定フレーム９から突出しているシャフト１１に連結されたプレート１０上に、並行して取り付けられている。該流体駆動手段７が、最上部において該プレート１０に連結されたそれぞれの空気式シリンダ７ｃ，７ｄを備えていて、該第一シリンダ７ｃは、該ウェブ５に長手方向シールを作る第一シール用ソノトロード６ａの接触力の調節を可能にしており、かつ該第二シリンダ７ｄは、他方のシール用ソノトロード６ｂの作動端部と、該シール用ソノトロード６ｂに対面しているそれぞれの横断シールトラック４との間のギャップの調節を可能にしている。
前述のシリンダ７ｃ及び７ｄを制御するための手段８は、接触力及び／又はソノトロードユニット６ａと６ｂとの間の距離を変化させるようになっているそれぞれの圧力スイッチ８ａにより構成されていてもよい。
本発明は、本発明の精神を逸脱することなく修正されてもよいことは理解されるであろう。さらに、本発明におけるすべての詳細が技術的に等価な要素と交換されてもよい。
図１は、本発明によるろ紙の全長をシールするための超音波ユニットの正面図であって、一部分は切断し一部分は断面図である。 図２は、図１における超音波ユニットの側面図であって、一部は切断し、一部は断面図である。 図３は、図１における超音波ユニットの概略平面図であって、一部は切断し、一部は断面図である。

Claims (2)

  1. 浸出製品用のろ紙をシールするためのシールユニットであり、少なくとも、成形した回転用のローラ（２）とシール用ソノトロード手段（６）とを具備する、シールユニットであって：
    該ローラ（２）は、該ローラ（２）の下方を移動する折り曲げられたろ紙のウェブ（５）に対して、該シール用ソノトロード手段（６）を用いて長手方向及び横断方向の接触シールをするためにガイドとして作用する円周方向及び半径方向のトラック（３，４）を備えていて、
    該シール用ソノトロード手段（６）は、ろ紙の管状ウェブを形成し一連のほぼ平らなフィルターバッグがウェブ上に成形されるように、該ローラ（２）の下方で移動している該ウェブ（５）に近接したシール位置に配置されていて、該シール用ソノトロード手段（６）が、固定フレーム（９）から突出しているシャフト（１１）に連結されたプレート（１０）上に、並行して取り付けられた第一ソノトロードユニット及び第二ソノトロードユニット（６ａ，６ｂ）である；シールユニットにおいて、
    該シール用ソノトロード手段（６）は、適切な手段を介して変数を制御するようになっている流体駆動手段（７）により作動されていて、該変数は、接触力及び／又は該シール用ソノトロード（６）と該ローラ（２）との間の距離により構成されていることと、該流体駆動手段（７）が、それぞれの空気式シリンダ（７ｃ，７ｄ）を備えていて、該それぞれの空気式シリンダ（７ｃ，７ｄ）は、端部の一方において固定された下段フレーム（９）に連結され、そして端部の他方において該シール用ソノトロード（６）の上部に連結されており、該第一シリンダ７ｃは、該ウェブ（５）に長手方向シールを作る第一シール用ソノトロード（６ａ）の接触力の調節を可能にしており、かつ該第二シリンダ７ｄは、第二シール用ソノトロード（６ｂ）の作動端部と、該シール用ソノトロード（６ｂ）に対面しているそれぞれの横断シールトラック（４）との間のギャップの調節を可能にしていることとを特徴とする、
    シールユニット。
  2. 該流体駆動手段手段（７）を制御するための該手段（８）は、圧力スイッチ（８ａ）からなることを特徴とする、請求項１に記載のシールユニット。
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