JP3605322B2 - 包材の超音波シール装置 - Google Patents

包材の超音波シール装置 Download PDF

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JP3605322B2
JP3605322B2 JP25125399A JP25125399A JP3605322B2 JP 3605322 B2 JP3605322 B2 JP 3605322B2 JP 25125399 A JP25125399 A JP 25125399A JP 25125399 A JP25125399 A JP 25125399A JP 3605322 B2 JP3605322 B2 JP 3605322B2
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hammer
film
movable
packaging material
base
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JP2001072020A (ja
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栄太郎 九十歩
典明 畝田
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Furukawa Mfg Co Ltd
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Furukawa Mfg Co Ltd
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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
    • 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
    • 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
    • B29C53/52—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 using external forming surfaces, e.g. sleeves
    • 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
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • 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
    • 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
    • B29C66/81467—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 arranged in an offset pattern
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—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 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
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
    • B29C66/9512—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools by controlling their vibration 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
    • B29C66/9516—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools by controlling their vibration amplitude
    • 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
    • B29C66/8141—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—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 surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • B29C66/83241—Joining or pressing tools pivoting around one axis cooperating pivoting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets

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Description

【０００１】
【発明の属する技術分野】
本発明は、２枚重ねの包材を連続溶着するために、相対移動する包材の重なり部を、超音波振動による発熱によって溶着する装置に関する。
【０００２】
【発明が解決しょうとする課題】
例えば筒形に丸めたフイルム両側縁の重なり部を超音波振動によつて生ずる熱により溶着する従来装置は、図７に示すごとく、上下に振動するハンマー１０と、機台１１に固定したハンマー台１２との間に２枚の重ね合わせたフイルム１３を、矢印１４の方向に移動させ、ハンマーから加わる振動熱によってフイルム１３を連続的に溶着するものであるが、前記フイルム１３の厚みには微妙な差があり、また局部的に材質むらがあるから、常に同じ振動では発熱量が各領域で異なり、このような溶着手段によって形成した容器を用いて例えば真空包装した場合、該容器のシール部分でのピンホールや不完全溶着によって空気漏れが起こる可能性がある。
【０００３】
【目的】
そこで本発明は、包材に対して複数の可動ハンマーで振動を加え、溶着の平均化によって溶着強度のバランスを図るものである。
【０００４】
【その解決手段】
本発明は、包材と相対移動の関係にあるハンマー台と、該ハンマーに対して超音波振動衝撃を加える可動ハンマーとによって、前記の２枚重ねの包材を発熱溶着する手段であつて、相対移動する前記包材の移動方向に向け横複数列に設置した可動ハンマー各々の振動に、周波数或いは振幅数の差を形成して構成する。かかる周波数の差により、フイルムの薄い部分で周波数の大きいハンマーは過剰熱をもたらすが、他方の周波数の小さいハンマーが適温をもたし、対称的にフイルムの厚い部分では周波数の大きいハンマーが適温をもたらせる。
【０００５】
また両側縁を襟重状に折り曲げた筒形プレートに沿って帯状フイルムを移動させ、該フイルムを同筒形フレームの断面形状に倣って連続的なチューブに加工する手段において、前記の襟重ね部における一側の側縁に一端を固定したバネ片の他端にハンマー台を形成すると共に、前記ハンマー台と、該ハンマー台に対して超音波振動衝撃を並列的に加える複数の可動ハンマーとによって、前記チューブフイルムの襟重ね部分を溶着する手段であつて、前記可動ハンマー各々の振動に、周波数或いは振幅数の差を形成して構成する。かかる振幅数の差により、フイルムの薄い部分で振幅数の大きいハンマーは過剰熱をもたらすが、他方の振幅数の小さいハンマーが適温をもたし、対称的にフイルムの厚い部分では振幅数の大きいハンマーが適温をもたらせる。
【０００６】
【発明の実施形態】
図１及びそれを斜めに見た図２のごとく、断面筒形に折り曲げたプレート１５は、その両側縁１６．１７を着物の襟のごとく上下で重ね合せると共に、帯状フイルム１８の進入口１９には、該フイルムの抵抗を少なくするために傾斜縁２０とＶ字形縁２１とを形成する。このため該筒形プレート１５に沿って引き出されるフイルム１８の一側の縁２２は内側の側縁１６の下に潜り、他側縁２３は外側縁１７の下に潜る。ただこの場合プレートの内側縁一部を盗み欠き２４しているので、フイルムの一側縁２２はこの盗み欠き部分２４から上に導き出される結果、両側縁２２ａ．２３ａは前記の盗み欠き部分から出た位置で襟重ねされる（図４をも参照のこと）。
【０００７】
また前記の筒形プレートにおける内側の側縁１６の中央部に内面に短冊形のバネ片３０を固定し、該バネ片他端の開放端に米粒形の２個のハンマー台３１、６１をそれぞれ並列に膨出すると共に、図４のごとく前記両ハンマー台３１、６１に２個の超音波ハンマー３２、６２をそれぞれ対向して設置する。
【０００８】
前記両ハンマー３２、６２を超音波によって振動させる場合、各ハンマー間に周波数の差を形成する。この差をフイルムを通して両ハンマー台３１、６１に作用させると、フイルムには発熱量の異なる複数列のシール痕跡でもってチューブ状に溶着される。要するにフイルムの薄い部分で周波数の大きいハンマーは過剰熱をもたらすが、他方の周波数の小さいハンマーが適温をもたし、対称的にフイルムの厚い部分では周波数の大きいハンマーが適温をもたらせる。結局フイルム１８に微妙な厚みの誤差があつても、複数ハンマー間の周波数の差はフイルムに温度差のある複数列のシールを行い溶着強度を平均化する。
【０００９】
また前記両ハンマー３２、６２を超音波によって振動させる場合、各ハンマー間に振幅数の差を形成する。この差を、フイルムを通して両ハンマー台３１、６１に作用させると、フイルムは発熱量の異なる複数列のシール痕跡でもってチューブ状に溶着され、上記と同じように、にフイルムの薄い部分で振幅数の大きいハンマーは過剰熱をもたらすが、他方の振幅数の小さいハンマーが適温をもたし、対称的にフイルムの厚い部分で振幅数の大きいハンマーが適温をもたらしてフイルム溶着度を平均化する。
【００１０】
なお図１ないし図４の実施例は、下方向から引き出した帯状フイルム１８を筒形プレート１５によつてチューブ化するごとく説明したが、筒形フイルムを１８０度回転してフイルムを上方向から導き入れることは可能であり、これは下記の実施例でも逆使用可能なことに当てはまる。
【００１１】
すなわち図５および図６に示すごとく機台４０に固定した筒形プレート４１は下面中央に連続的なスリツト４２を形成し、帯状フイルム４３は上方から導かれて、その両側縁４４を合掌状に前記スリツト４２から食み出しながら丸める。
【００１２】
前記筒形プレートの下面には前記スリツト４２を隔て一側に基礎材４５を垂設し、該基礎材に短冊状のバネ片４６の一端を固定すると共に、該バネ片の多端に２個のハンマー台４７、６４を膨出する一方、機台８に支持したベルクランク４９のハンマー５０を前記ハンマー台４７に対向させ、前記ベルクランクを振動機５１に連結する。そこで前記振動機５１の動力でハンマー５０を介してハンマー台４７に振動を作用させると、スリット４２から食み出て移動するフイルム合掌部は連続的に溶着される。なおかかる実施例においても２個のハンマー台４７、６４に対して２個のハンマーを対向させている。
【図面の簡単な説明】
【図１】第１実施例の底面図
【図２】前図面の斜示図
【図３】前図面のＩＩＩ−ＩＩＩ線断面図
【図４】図２におけるＩＶ−ＩＶ線の断面図
【図５】第２実施例の側面図
【図６】前図のＶＩ−ＶＩ線の断面図
【図７】従来技術の説明図
【符号の説明】
１５−筒形プレート
１６−一側の側縁
１７−他側の側縁
１８−フイルム
１９−フイルム進入口
２２−フイルム一側縁
２３−フイルム他側縁
２４−盗み欠き部
３０−バネ片
３１、６１−ハンマー台
３２、６２−ハンマー
４１−筒形プレート
４２−スリツト
４３−フイルム
４４−合掌縁
４５−基礎材
４６−バネ片
４７、６４−ハンマー台
５０−ハンマー

Claims (4)

  1. 包材と相対移動の関係にあるハンマー台と、該ハンマーに対して超音波振動衝撃を加える可動ハンマーとによって、前記の２枚重ねの包材を発熱溶着する手段であつて、相対移動する前記包材の移動方向に向け横複数列に設置した可動ハンマー各々の振動に、周波数の差を形成したシール装置。
  2. 包材と相対移動の関係にあるハンマー台と、該ハンマーに対して超音波振動衝撃を加える可動ハンマーとによって、前記の２枚重ねの包材を発熱溶着する手段であつて、相対移動する前記包材の移動方向に向け横複数列に設置した可動ハンマー各々の振動に、振幅数の差を形成したシール装置。
  3. 両側縁を襟重状に折り曲げた筒形プレートに沿って帯状フイルムを移動させ、該フイルムを同筒形フレームの断面形状に倣って連続的なチューブに加工する手段において、前記の襟重ね部における一側の側縁に一端を固定したバネ片の他端にハンマー台を形成すると共に、前記ハンマー台と、該ハンマー台に対して超音波振動衝撃を並列的に加える複数の可動ハンマーとによって、前記チューブフイルムの襟重ね部分を溶着する手段であつて、前記可動ハンマー各々の振動に、周波数の差を形成したシール装置。
  4. 両側縁を襟重状に折り曲げた筒形プレートに沿って帯状フイルムを移動させ、該フイルムを同筒形フレームの断面形状に倣って連続的なチューブに加工する手段において、前記の襟重ね部における一側の側縁に一端を固定したバネ片の他端にハンマー台を形成すると共に、前記ハンマー台と、該ハンマー台に対して超音波振動衝撃を並列的に加える複数の可動ハンマーとによって、前記チューブフイルムの襟重ね部分を溶着する手段であつて、前記可動ハンマー各々の振動に、振幅数の差を形成したシール装置。
JP25125399A 1999-09-06 1999-09-06 包材の超音波シール装置 Expired - Lifetime JP3605322B2 (ja)

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