JP3515052B2 - Impulse type heat sealer - Google Patents
Impulse type heat sealerInfo
- Publication number
- JP3515052B2 JP3515052B2 JP2000232653A JP2000232653A JP3515052B2 JP 3515052 B2 JP3515052 B2 JP 3515052B2 JP 2000232653 A JP2000232653 A JP 2000232653A JP 2000232653 A JP2000232653 A JP 2000232653A JP 3515052 B2 JP3515052 B2 JP 3515052B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- heating
- crimping
- bonding
- heater
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
- B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
- B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
-
- 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
- B29C65/38—Impulse heating
-
- 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
- B29C66/40—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
- B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
-
- 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
- B29C66/70—General 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
- B29C66/73—General 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
- B29C66/739—General 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
- B29C66/7392—General 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
- B29C66/73921—General 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
-
- 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
-
- 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
- B29C66/81457—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 block or layer of deformable material, e.g. sponge, foam, rubber
-
- 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
- B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
- B29C66/822—Transmission mechanisms
- B29C66/8227—Transmission mechanisms using springs
-
- 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
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/849—Packaging machines
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Package Closures (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、被シール物のシー
ル部を圧着する圧着部を有する圧着体と、前記被シール
物の前記シール部を加熱する加熱部を有する加熱体とを
備え、前記圧着体の圧着作用工程において、前記シール
部を前記圧着部と前記加熱部により挟持することによ
り、前記シール部のシールを行うように構成したインパ
ルス式ヒートシーラーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a crimping body having a crimping portion for crimping a sealing portion of an object to be sealed, and a heating body having a heating portion for heating the sealing portion of the object to be sealed. The present invention relates to an impulse heat sealer configured to seal the seal portion by sandwiching the seal portion between the pressure portion and the heating portion in the pressure-bonding step of the pressure-bonded body.
【０００２】[0002]
【従来の技術】かかるインパルス式ヒートシーラーの従
来技術の構成を模式図で示す。図７（ａ）に示すよう
に、インパルス式ヒートシーラーは、被シール物１０２
のシール部１０２ａを圧着する圧着体１００と、シール
部１０２ａを加熱する加熱部１０１とを備えている。
圧着体１００は、シリコンゴム製の圧着部１００ａを備
えている。 加熱体１０１は、第１絶縁皮膜により形成
された加熱部１０１ａと、この第１絶縁皮膜１０１ａの
裏面に取付けられたニクロムテープ等のヒーター１０１
ｂと、このヒーター１０１ｂの裏面に設けられた第２絶
縁皮膜１０１ｃと、支持ブロック１０１ｄとを備えてい
る。被シール物１０２のシールを行う場合には、圧着体
１００を下方向に移動させ圧着部１００ａと加熱部１０
１ａによりシール部１０２ａを挟持圧着すると共に、ヒ
ーター１０１ｂに短時間、電流を流しヒーター１０１ｂ
を直ちにシール温度に上昇させて被シール物１０２をシ
ールする。 そして、シールが完了した後は、圧着体１
００を上昇させて元の位置に復帰させると共に、加熱体
１０１の加熱部１０１ａを冷却するため支持ブロック１
０１ｄを介して放熱する。2. Description of the Related Art A conventional structure of such an impulse type heat sealer is shown in a schematic view. As shown in FIG. 7A, the impulse heat sealer includes
A pressure-bonding body 100 for pressure-bonding the seal part 102a and a heating part 101 for heating the seal part 102a are provided.
The crimping body 100 includes a crimping portion 100a made of silicon rubber. The heating element 101 includes a heating portion 101a formed of a first insulating film and a heater 101 such as a nichrome tape attached to the back surface of the first insulating film 101a.
b, a second insulating film 101c provided on the back surface of the heater 101b, and a support block 101d. When the object 102 to be sealed is to be sealed, the pressure-bonding body 100 is moved downward to move the pressure-bonding section 100a and the heating section 10 together.
The seal portion 102a is sandwiched and crimped by 1a, and an electric current is supplied to the heater 101b for a short time to heat the heater 101b.
Is immediately raised to the seal temperature and the object 102 to be sealed is sealed. After the sealing is completed, the crimp body 1
00 to return to the original position and to cool the heating portion 101a of the heating element 101, the support block 1
Heat is dissipated through 01d.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、加熱部
１０１ａを放熱させて所望の温度に下げるにはある程度
の時間がかかるため、単位時間あたりのシール回数を増
やすことが困難である。支持ブロック１０１ｄを内部に
冷却水を循環させるなどにより、常時冷却させておく構
成も考えられるが、そうすると、加熱部１０１ａを加熱
するときの効率が低下し加熱に時間がかかってしまう。However, since it takes a certain amount of time to radiate heat from the heating unit 101a and lower it to a desired temperature, it is difficult to increase the number of sealings per unit time. A configuration may be considered in which the support block 101d is constantly cooled by circulating cooling water inside the support block 101d. However, if this is done, the efficiency of heating the heating unit 101a decreases and it takes time to heat.
【０００４】本発明は上記実情に鑑みてなされたもので
あり、その課題は、加熱冷却時間を短縮して単位時間あ
たりのシール回数を増やすことのできるインパルス式ヒ
ートシーラーを提供することである。The present invention has been made in view of the above circumstances, and an object thereof is to provide an impulse type heat sealer capable of shortening the heating / cooling time and increasing the number of sealings per unit time.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
本発明に係るインパルス式ヒートシーラーは、被シール
物のシール部を圧着する圧着部を有する圧着体と、前記
被シール物の前記シール部を加熱する加熱部を有する加
熱体とを備え、前記圧着体の圧着作用工程において、前
記シール部を前記圧着部と前記加熱部により挟持するこ
とにより、前記シール部のシールを行うように構成した
インパルス式ヒートシーラーにおいて、前記加熱部を構
成するヒーターと、前記ヒーターを支持する変形可能な
中空筒状体と、前記中空筒状体を支持する支持体と、前
記中空筒状体の中空部への気体の導入・排出を制御する
制御手段とを備え、前記制御手段は、前記圧着体の前記
圧着作用開始時又は圧着作用開始前に、前記中空部に前
記気体を導入させると共に、前記シール部のシールを行
った後に、前記気体を前記中空部から排出させるように
制御し、前記気体の排出に伴い、前記圧着体で前記中空
筒状体の前記中空部を押しつぶすことにより、前記加熱
部の熱を前記支持体を介して放熱促進させるように構成
したことを特徴とするインパルス式ヒートシーラー。こ
の構成による作用・効果は次の通りである。被シール物
のシール部のシールを行うために、圧着体と加熱体とが
設けられており、シール部を圧着体の圧着部と加熱体の
加熱部により挟持圧着することにより、シール部を加熱
しシールする。 ここで、加熱部を構成するヒーターは
変形可能な中空筒状体に支持され、更にこの中空筒状体
は支持体により支持されている。中空筒状体の中空部に
は気体が導入・排出され、この導入・排出は制御手段に
より制御される。そして、圧着体による圧着作用開始時
（又は開始前）つまり被シール物のシール部のシールを
開始しようとするときに気体が中空部に導入される。
気体を導入することにより熱伝導率が低くなり、支持体
を介しての放熱がされにくくなり、短時間で加熱を行う
ことができる。そして、シール部のシールを行った後
に、気体を中空部から排出させて中空部を押しつぶして
熱伝導率を良くする。 これにより、支持体を介しての
放熱を促進させることができる。In order to solve the above problems, an impulse heat sealer according to the present invention comprises a crimping body having a crimping portion for crimping a sealing portion of an object to be sealed, and the sealing portion of the object to be sealed. And a heating member having a heating unit for heating the pressure-bonding member, and in the pressure-bonding step of the pressure-bonding member, the sealing unit is sandwiched between the pressure-bonding unit and the heating unit to seal the sealing unit. In the impulse heat sealer, a heater that constitutes the heating unit, a deformable hollow cylindrical body that supports the heater, a support that supports the hollow cylindrical body, and a hollow portion of the hollow cylindrical body. And a control means for controlling the introduction and discharge of gas, the control means introducing the gas into the hollow portion at the time of starting the pressure-bonding action of the pressure-bonded body or before starting the pressure-bonding action. Together with, after performing the sealing of the sealing portion, the gas is controlled to be discharged from the hollow portion, and with the discharge of the gas, the hollow portion of the hollow cylindrical body is crushed by the pressure bonding body. An impulse heat sealer characterized in that the heat of the heating section is accelerated through the support. The operation and effect of this configuration are as follows. A crimping body and a heating body are provided to seal the sealing part of the object to be sealed, and the sealing part is heated by sandwiching and crimping the sealing part with the crimping part of the crimping body and the heating part of the heating body. And seal. Here, the heater forming the heating unit is supported by a deformable hollow cylindrical body, and the hollow cylindrical body is further supported by a support body. Gas is introduced into and discharged from the hollow portion of the hollow cylindrical body, and the introduction and discharge are controlled by the control means. Then, gas is introduced into the hollow portion at the start of (or before the start of) the pressure-bonding action by the pressure-bonded body, that is, when the sealing of the seal portion of the object to be sealed is started.
The introduction of gas reduces the thermal conductivity, makes it difficult for heat to be dissipated through the support, and enables heating in a short time. Then, after sealing the sealing portion, gas is discharged from the hollow portion and the hollow portion is crushed to improve the thermal conductivity. As a result, heat dissipation through the support can be promoted.
【０００６】以上のように、加熱冷却時間の短縮化を図
ることができる。その結果、加熱冷却時間を短縮して単
位時間あたりのシール回数を増やすことのできるインパ
ルス式ヒートシーラーを提供することができる。As described above, the heating / cooling time can be shortened. As a result, it is possible to provide an impulse heat sealer that can shorten the heating / cooling time and increase the number of sealings per unit time.
【０００７】本発明の好適な実施形態として、前記中空
筒状体は、耐熱性樹脂で形成されたチューブであるもの
があげられる。耐熱性樹脂を用いることにより、ヒータ
ーを直接中空筒状体に支持させることができる。チュー
ブを用いることにより、中空部の押しつぶしを容易に行
うことができる。As a preferred embodiment of the present invention, the hollow cylindrical body is a tube made of a heat resistant resin. By using the heat resistant resin, the heater can be directly supported by the hollow cylindrical body. By using the tube, the hollow portion can be easily crushed.
【０００８】[0008]
【発明の実施の形態】本発明に係るインパルス式ヒート
シーラー（以下、単に「ヒートシーラー」という。 ）
の好適な実施形態を図面を用いて説明する。 図１は、
ヒートシーラーの構成を示す側断面図である。図２は正
面図である。
＜実施形態の全体構成＞ヒートシーラーの本体１は、一
体的に結合された上部枠体２と下部枠体３とから構成さ
れる。 上部枠体２は、上部枠体２には、トランス４、
制御ボックス５、マイクロスイッチ６、圧着レバー７
（圧着体に相当する。 ）が設けられている。圧着レバ
ー７は、左右一対のアーム８が軸９に対して回転自在と
なるように取付けられている。 圧着レバー７の先端部
にはシリコンゴム１０が設けられており、被シール物の
シール部を圧着する圧着部として機能する。下部枠体３
には、冷却ファン１１と電磁石１２とショックアブソー
バ１３とが設けられている。 電磁石１２は、可動鉄心
１４と、電磁コイル１５と、継鉄１６とを備えている。
下部枠体３の下面部には脚部１７が設けられている。
電磁石１２は、上下一対のカバー部材１８，１９により
カバーされると共に、支持台板２０を介して下部枠体３
に対して取付けられている。可動鉄心１４は、継鉄１６
の内径部に沿って矢印Ａ方向に摺動可能に構成されお
り、先端面１４ａがショックアブソーバ１３の作用部１
３ａに当接可能に構成されている。 また、下部枠体３
の上面部には、ダイヤフラム２１がネジ２２により取付
けられ、このダイヤフラム２１が可動鉄心１４のフラン
ジ部１４ｂに連結されている。 また、ネジ２２は、支
持台板２０を上部枠体３に対して連結させる機能も有し
ている。BEST MODE FOR CARRYING OUT THE INVENTION An impulse heat sealer according to the present invention (hereinafter, simply referred to as "heat sealer").
A preferred embodiment of the present invention will be described with reference to the drawings. Figure 1
It is a sectional side view which shows the structure of a heat sealer. FIG. 2 is a front view. <Overall Configuration of Embodiment> The main body 1 of the heat sealer includes an upper frame body 2 and a lower frame body 3 which are integrally connected. The upper frame 2 includes a transformer 4,
Control box 5, micro switch 6, crimping lever 7
(Corresponding to a crimp body) is provided. The crimping lever 7 is attached so that a pair of left and right arms 8 can rotate about a shaft 9. Silicone rubber 10 is provided at the tip of the crimping lever 7 and functions as a crimping portion for crimping the sealing portion of the object to be sealed. Lower frame 3
A cooling fan 11, an electromagnet 12, and a shock absorber 13 are provided in the. The electromagnet 12 includes a movable iron core 14, an electromagnetic coil 15, and a yoke 16.
Legs 17 are provided on the lower surface of the lower frame 3.
The electromagnet 12 is covered by a pair of upper and lower cover members 18 and 19, and the lower frame 3 is supported by the support base plate 20.
Installed against. The movable iron core 14 is a yoke 16
Is configured to be slidable in the direction of the arrow A along the inner diameter of the shock absorber 13, and the tip end surface 14a of the shock absorber 13 acts on the acting portion 1 of the shock absorber 13.
It is configured to be able to abut on 3a. Also, the lower frame 3
A diaphragm 21 is attached to the upper surface of the with a screw 22, and the diaphragm 21 is connected to the flange portion 14 b of the movable iron core 14. The screw 22 also has a function of connecting the support base plate 20 to the upper frame body 3.
【０００９】圧着レバー７の横幅方向の中央位置にショ
ックアブソーバ１３付きの電磁石１２が設けられてい
る。 また、同じく圧着レバー７の中央位置には、作動
ロッド２３が摺動可能なように嵌挿されている。作動ロ
ッド２３に外嵌した弾性部材２４が、同じく作動ロッド
２３に外嵌した押え板２５と圧着レバー７とで挟持され
ている。 作動ロッド２３の上端部に螺合されている圧
着力調整つまみ２６の回転操作により、弾性部材２４に
対する作動ロッド２３の上下位置を細密に変更できるよ
うになっている。圧着レバー７は、不図示の機構によ
り、図１の初期位置よりも上方向に移動しないようにな
っている。An electromagnet 12 with a shock absorber 13 is provided at the center of the crimping lever 7 in the lateral width direction. Similarly, the actuating rod 23 is slidably fitted in the central position of the crimping lever 7. The elastic member 24 externally fitted to the actuating rod 23 is sandwiched between the pressing plate 25 and the crimping lever 7 also externally fitted to the actuating rod 23. By rotating the crimping force adjusting knob 26 screwed onto the upper end of the operating rod 23, the vertical position of the operating rod 23 with respect to the elastic member 24 can be finely changed. The crimping lever 7 is prevented from moving upward from the initial position in FIG. 1 by a mechanism (not shown).
【００１０】作動ロッド２３と可動鉄心１４とは、２箇
所のリンクピン２８，２９により、リンクレバー２７を
介して連結されている。これにより、可動鉄心１４の直
線運動がスムーズに圧着レバー７の回転運動に変換され
るようになっている。 また、作動ロッド２３とリンク
レバー２７の周りに、圧着レバー７の復帰用の圧縮コイ
ルスプリング３０が、上部枠体２と圧着レバー７との間
に配置されている。さらに、下部枠体３には、加熱体３
１と冷却体４０（支持体に相当する。 ）とが取付けら
れている。 加熱体３１は、中空のゴムチューブ３１ｂ
（中空筒状体に相当する。 ）の上部に取り付け支持さ
れたヒーター３１ａを備えており、このヒーター３１ａ
は加熱部として機能する。シリコンゴム１０の圧着部１
０ａにヒーター３１ａが対向配置され、ヒーター３１ａ
はニクロムテープ等の電熱リボンにより形成される。
冷却体４０には、ペルチェ素子４５と放熱板４６とが設
けられている。圧着レバー７が作動して圧着部１０ａが
ヒーター３１ａに到達すると、不図示のスイッチ操作機
構によりマイクロスイッチ６をオンにし、ニクロムテー
プに通電を行う。これにより、圧着部１０ａとヒーター
３１ａとで挟持された被シール物Ｆのシール部Ｆａを溶
融しシールする。 制御ボックス５に対応した位置に
は、電源スイッチ３２とサイクルタイム調整つまみ３３
が設けられている。 制御ボックス５には、ニクロムテ
ープへの通電時間や、電磁コイル１５への励磁時間の調
整機構も設けられている。The operating rod 23 and the movable iron core 14 are connected via link levers 27 by two link pins 28 and 29. As a result, the linear motion of the movable iron core 14 is smoothly converted into the rotary motion of the crimping lever 7. A compression coil spring 30 for returning the crimping lever 7 is arranged between the upper frame 2 and the crimping lever 7 around the operating rod 23 and the link lever 27. Further, the lower frame 3 has a heating element 3
1 and a cooling body 40 (corresponding to a support body) are attached. The heating body 31 is a hollow rubber tube 31b.
The heater 31a is attached and supported on the upper part of the (corresponding to a hollow cylindrical body).
Functions as a heating unit. Crimping part 1 of silicone rubber 10
The heater 31a is arranged to face the heater 0a
Is formed by an electrothermal ribbon such as nichrome tape.
The cooling body 40 is provided with a Peltier element 45 and a heat dissipation plate 46. When the crimping lever 7 operates and the crimping portion 10a reaches the heater 31a, the micro switch 6 is turned on by a switch operating mechanism (not shown) to energize the nichrome tape. As a result, the seal portion Fa of the object to be sealed F sandwiched between the pressure bonding portion 10a and the heater 31a is melted and sealed. At a position corresponding to the control box 5, a power switch 32 and a cycle time adjusting knob 33.
Is provided. The control box 5 is also provided with a mechanism for adjusting the energizing time to the nichrome tape and the exciting time to the electromagnetic coil 15.
【００１１】電磁コイル１５に通電すると、可動鉄心１
４が吸引され、リンクレバー２７と作動ロッド２３を介
して圧着レバー７を圧縮コイルスプリング３０の付勢力
に抗して図１の反時計方向に回転させる。これにより、
被シール物Ｆのシールを行うことができる。なお、手動
で圧着レバー７を操作することもできる。
＜主要部分の構成＞図３は、加熱体３１の構成を示す斜
視図である。すでに述べたように、加熱体３１はヒータ
ー３１ａとゴムチューブ３１ｂとで構成されている。ゴ
ムチューブ３１ｂは、３００℃以上の耐熱性のある樹脂
で形成され、ゴムチューブ３１ｂには中空部３１ｃが形
成されており空気（気体に相当する。 ）の導入・排出
がされる。冷却体４０は、加熱体３１の熱を逃がす（放
熱する）ためのものであり、図１に示すようにペルチェ
素子４５により冷却され、放熱を促進する。When the electromagnetic coil 15 is energized, the movable iron core 1
4 is attracted, and the pressure-bonding lever 7 is rotated counterclockwise in FIG. 1 through the link lever 27 and the operating rod 23 against the biasing force of the compression coil spring 30. This allows
The object F to be sealed can be sealed. The crimping lever 7 can also be manually operated. <Structure of Main Part> FIG. 3 is a perspective view showing the structure of the heating body 31. As described above, the heating element 31 is composed of the heater 31a and the rubber tube 31b. The rubber tube 31b is formed of a resin having a heat resistance of 300 ° C. or higher, and a hollow portion 31c is formed in the rubber tube 31b so that air (corresponding to gas) can be introduced and discharged. The cooling body 40 is for releasing the heat of the heating body 31 (radiating heat), and is cooled by the Peltier element 45 as shown in FIG.
【００１２】図４は、ゴムチューブ３１ｂへの空気の導
入・排出の制御機構を説明するためのブロック図であ
る。この制御機構は、ゴムチューブ３１ｂ内に空気を送
り込むためのポンプ５１と、空気の導入管５２と、導入
弁５３と、ゴムチューブ３１ｂから空気を排出させるた
めの排出弁５４と、排出弁５４を閉鎖方向に付勢するば
ね５５と、ポンプ５１及び排出弁５４を制御するための
制御装置５０（制御手段に相当する。 ）とを備えてい
る。 導入弁５３は通常は閉じ方向に付勢されており、
ポンプ５１から所定圧力以上の空気が送られてくること
により付勢力に抗して開き状態になる。閉鎖弁５４は電
磁弁であり通常は閉じ方向に付勢されている。制御装置
５０からの開信号によりばね５５に抗して矢印Ｂ方向に
移動させることにより、開き状態にすることができ、こ
れによりゴムチューブ３１ｂ内の空気を排出させること
ができる。なお、封入される気体は空気に限定されるも
のではない。FIG. 4 is a block diagram for explaining a control mechanism for introducing / exhausting air into / from the rubber tube 31b. This control mechanism includes a pump 51 for sending air into the rubber tube 31b, an air introduction pipe 52, an introduction valve 53, a discharge valve 54 for discharging air from the rubber tube 31b, and a discharge valve 54. A spring 55 for urging in the closing direction and a control device 50 (corresponding to control means) for controlling the pump 51 and the discharge valve 54 are provided. The introduction valve 53 is normally biased in the closing direction,
When the air having a pressure equal to or higher than a predetermined pressure is sent from the pump 51, it is opened against the biasing force. The closing valve 54 is a solenoid valve and is normally biased in the closing direction. By moving in the direction of arrow B against the spring 55 in response to the open signal from the control device 50, the open state can be achieved, whereby the air in the rubber tube 31b can be discharged. The enclosed gas is not limited to air.
【００１３】＜作動説明＞次に、本実施形態に係るヒー
トシーラーを作動させて被シール物をシールする場合の
作動を図５、図６（タイムチャート）により説明する。
図５（ａ）は初期位置を示す。まず、被シール物である
フィルムＦのシール部Ｆａを圧着部１０ａとヒーター３
１ａとの間に挿入する。 そして、不図示の始動スイッ
チを操作することにより、電磁コイル１５に通電し可動
鉄心１４を図１の矢印Ａ方向に移動させる。 これによ
り、圧着レバー７を軸９中心に反時計方向に回転させ
る。 圧着レバー７による圧着作用が開始する前に、ポ
ンプ５１を作動させてゴムチューブ３１ｂの中空部３１
ｃに空気を送り込む。このとき、排出弁５４は閉じた状
態にある。よって、中空部３１ｃに空気が導入される。<Description of Operation> Next, the operation when the heat sealer according to the present embodiment is operated to seal an object to be sealed will be described with reference to FIGS. 5 and 6 (time chart).
FIG. 5A shows the initial position. First, the seal portion Fa of the film F, which is the object to be sealed, is attached to the pressure-bonding portion 10a and the heater 3.
Insert between 1a. Then, by operating a start switch (not shown), the electromagnetic coil 15 is energized to move the movable iron core 14 in the direction of arrow A in FIG. As a result, the crimping lever 7 is rotated counterclockwise about the shaft 9. Before the crimping action by the crimping lever 7 is started, the pump 51 is operated to operate the hollow portion 31 of the rubber tube 31b.
Inject air into c. At this time, the discharge valve 54 is in a closed state. Therefore, air is introduced into the hollow portion 31c.
【００１４】圧着レバー７の圧着部１０ａとヒーター３
１ａによりフィルムＦを挟持圧着するまでの圧着レバー
７の空走距離は、図１に符号Ｌ１で示される。 フィル
ムＦの圧着開始と同時又はほぼ同時に、マイクロスイッ
チ６がＯＮとなり、ヒーター３６を加熱する（図６
（ｂ）参照）。 さらに、圧着開始と同時又はほぼ同時
にショックアブソーバ１３が作動する。 これにより、
圧着作用開始時における衝撃を吸収し、スムーズな圧着
作用を実現する。ヒーター３１ａの加熱により加熱部の
温度は徐々に上昇する（図６参照）。また、空気を導入
していることにより、その断熱効果（熱伝導率が低い状
態）により冷却体４０への放熱量は少ない。Crimping portion 10a of crimping lever 7 and heater 3
The idling distance of the crimping lever 7 until the film F is sandwiched and crimped by 1a is indicated by reference numeral L1 in FIG. At the same time or almost at the same time as the pressure bonding of the film F is started, the micro switch 6 is turned on to heat the heater 36 (see FIG. 6).
(See (b)). Further, the shock absorber 13 operates at the same time or almost at the same time as the start of the crimping. This allows
It absorbs the shock at the start of the crimping action and realizes a smooth crimping action. The temperature of the heating section gradually rises due to the heating of the heater 31a (see FIG. 6). Further, since the air is introduced, the amount of heat released to the cooling body 40 is small due to its heat insulating effect (a state in which the thermal conductivity is low).
【００１５】所定の加熱時間が経過した後に、制御装置
５０により排出弁５４を開き方向に作動させる。圧着レ
バー７の圧着力により、中空部３１ｃ内の空気は排出さ
れていく。これにより、圧着レバー７の圧着部１０ａも
下降する。空気が完全に排出されると（圧着部１０ａが
下降しきった状態）、図５（ｃ）に示すようにゴムチュ
ーブ３１ｂの中空部３１ｃは押しつぶされた状態にな
る。 空気がなくなることにより、熱伝導率が高い状態
になり、ヒーター３１ａの熱は冷却体４０を介してスム
ーズに放熱される。After the elapse of a predetermined heating time, the controller 50 operates the discharge valve 54 in the opening direction. The air in the hollow portion 31c is discharged by the pressure force of the pressure lever 7. As a result, the crimp portion 10a of the crimp lever 7 is also lowered. When the air is completely discharged (the pressure-bonding portion 10a is completely lowered), the hollow portion 31c of the rubber tube 31b is crushed as shown in FIG. 5 (c). By eliminating the air, the heat conductivity becomes high, and the heat of the heater 31a is smoothly radiated through the cooling body 40.
【００１６】ヒーター３１ａを加熱開始してから冷却開
始までの圧着レバー７の移動距離（加熱距離）は、図１
において符号Ｌ２で示される。 トータルの圧着レバー
７の移動距離は、符号Ｌで示される。 中空部３１ｃに
空気を導入しているため、加熱作用時はヒーター３１ａ
が冷却体４０による冷却作用を受けることはなく、ヒー
ター３１ａによる熱が熱伝導により逃げていかない。そ
して、ヒーター３１ａが下降した後は、ただちに冷却体
４０による冷却がされる（図６参照）。ヒーター３１ａ
の熱は、放熱板４６を介して放熱される。冷却開始位置
にて、加熱体３１を所定時間冷却させる。 所定時間経
過後、電磁コイル１５への通電をＯＦＦにする（図６の
冷却終了位置）。なお、冷却開始位置と冷却終了位置と
は同じ位置である。 圧着レバー７は、圧縮コイルスプ
リング３０の付勢力により、初期位置に復帰する。ま
た、ゴムチューブ３１ｂの中空部３１ｃ内にポンプ５１
により再び空気を送り込むことにより、ゴムチューブ３
１ｂは図５（ａ）の状態に復帰し、これによりヒーター
３１ａも初期位置に復帰する。 ヒーター３１ａの初期
位置への復帰は、次の圧着作用が開始されるまでに行わ
れればよい。
＜別実施形態＞
（１）被シール物としては特定の形態のものに限定され
るものではない。
（２）中空筒状体としては、ゴムチューブ以外の形態の
ものを採用することができる。
（３）冷却体による冷却は、ペルチェ素子４５に限定さ
れるものではなく、例えば、冷却水を循環させる構造等
を採用してもよい。The moving distance (heating distance) of the pressure bonding lever 7 from the start of heating the heater 31a to the start of cooling is shown in FIG.
Is indicated by reference numeral L2. The total moving distance of the crimping lever 7 is indicated by the symbol L. Since air is introduced into the hollow portion 31c, the heater 31a is used during heating.
Is not affected by the cooling effect of the cooling body 40, and the heat generated by the heater 31a does not escape due to heat conduction. Then, immediately after the heater 31a descends, cooling by the cooling body 40 is performed (see FIG. 6). Heater 31a
Is radiated through the heat dissipation plate 46. The heating element 31 is cooled for a predetermined time at the cooling start position. After a lapse of a predetermined time, the power supply to the electromagnetic coil 15 is turned off (the cooling end position in FIG. 6). The cooling start position and the cooling end position are the same position. The crimping lever 7 returns to the initial position by the urging force of the compression coil spring 30. In addition, the pump 51 is placed in the hollow portion 31c of the rubber tube 31b.
The rubber tube 3 by sending air again by
1b returns to the state of FIG. 5 (a), whereby the heater 31a also returns to the initial position. The heater 31a may be returned to the initial position by the time when the next pressure bonding operation is started. <Other Embodiments> (1) The object to be sealed is not limited to a specific one. (2) As the hollow cylindrical body, a shape other than the rubber tube can be adopted. (3) The cooling by the cooling body is not limited to the Peltier element 45, and for example, a structure in which cooling water is circulated may be adopted.
【図１】ヒートシーラーの構成を示す側断面図FIG. 1 is a side sectional view showing the structure of a heat sealer.
【図２】ヒートシーラーの構成を示す正面図FIG. 2 is a front view showing the configuration of the heat sealer.
【図３】加熱体の構成を示す斜視図FIG. 3 is a perspective view showing the configuration of a heating element.
【図４】ヒートシーラーの作動を説明する図FIG. 4 is a diagram for explaining the operation of the heat sealer.
【図５】ゴムチューブへの空気の導入・排出の制御を説
明するためのブロック図FIG. 5 is a block diagram for explaining control of introduction / exhaust of air into a rubber tube.
【図６】ヒートシーラーの作動を説明するタイムチャー
トFIG. 6 is a time chart explaining the operation of the heat sealer.
【図７】従来技術に係るヒートシーラーの構成を示す図FIG. 7 is a diagram showing a configuration of a heat sealer according to a conventional technique.
７ 圧着レバー １０ａ 圧着部 ３１ 加熱体 ３１ａ ヒーター ３１ｂ ゴムチューブ ３１ｃ 中空部 ４０ 冷却体 Ｆ フィルム（被シール物） Ｆａ シール部 7 Crimping lever 10a Crimping part 31 heating body 31a heater 31b rubber tube 31c hollow part 40 Cooling body F film (object to be sealed) Fa seal part
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−133721（ＪＰ，Ａ) 特開 昭56−41127（ＪＰ，Ａ) 特開 昭53−97067（ＪＰ，Ａ) 実開 平２−80506（ＪＰ，Ｕ) 実開 昭58−194015（ＪＰ，Ｕ) 実開 平６−1210（ＪＰ，Ｕ) 実開 昭64−25118（ＪＰ，Ｕ) 特表 昭62−501902（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B65B 51/10 B29C 65/38 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-3-133721 (JP, A) JP-A-56-41127 (JP, A) JP-A-53-97067 (JP, A) 80506 (JP, U) Actually open Sho 58-194015 (JP, U) Actually open Flat 6-1210 (JP, U) Actually open Sho 64-25118 (JP, U) Special table Sho 62-501902 (JP, A) (58) Fields surveyed (Int.Cl. 7 , DB name) B65B 51/10 B29C 65/38
Claims (2)
を有する圧着体と、 前記被シール物の前記シール部を加熱する加熱部を有す
る加熱体とを備え、 前記圧着体の圧着作用工程において、前記シール部を前
記圧着部と前記加熱部により挟持することにより、前記
シール部のシールを行うように構成したインパルス式ヒ
ートシーラーにおいて、 前記加熱部を構成するヒーターと、 前記ヒーターを支持する変形可能な中空筒状体と、 前記中空筒状体を支持する支持体と、 前記中空筒状体の中空部への気体の導入・排出を制御す
る制御手段とを備え、 前記制御手段は、前記圧着体の前記圧着作用開始時又は
圧着作用開始前に、前記中空部に前記気体を導入させる
と共に、前記シール部のシールを行った後に、前記気体
を前記中空部から排出させるように制御し、 前記気体の排出に伴い、前記圧着体で前記中空筒状体の
前記中空部を押しつぶすことにより、前記加熱部の熱を
前記支持体を介して放熱促進させるように構成したこと
を特徴とするインパルス式ヒートシーラー。1. A pressure-bonding step of the pressure-bonding body, comprising: a pressure-bonding body having a pressure-bonding section that pressure-bonds a sealing section of the object to be sealed; and a heating body having a heating section that heats the sealing section of the object to be sealed. In the impulse heat sealer configured to seal the seal portion by sandwiching the seal portion between the pressure-bonding portion and the heating portion, a heater constituting the heating portion, and the heater are supported. A deformable hollow cylindrical body, a support that supports the hollow cylindrical body, and a control unit that controls the introduction and discharge of gas into the hollow portion of the hollow cylindrical body, the control unit, At the start of the crimping action of the crimped body or before the start of the crimping action, the gas is introduced into the hollow portion, and after sealing the sealing portion, the gas is discharged from the hollow portion. Control so as to crush the hollow portion of the hollow cylindrical body with the pressure-bonded body as the gas is discharged, thereby accelerating the heat of the heating portion through the support. Impulse-type heat sealer characterized by
れたチューブであることを特徴とする請求項１に記載の
インパルス式ヒートシーラー。2. The impulse heat sealer according to claim 1, wherein the hollow cylindrical body is a tube formed of a heat resistant resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000232653A JP3515052B2 (en) | 2000-08-01 | 2000-08-01 | Impulse type heat sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000232653A JP3515052B2 (en) | 2000-08-01 | 2000-08-01 | Impulse type heat sealer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002037221A JP2002037221A (en) | 2002-02-06 |
| JP3515052B2 true JP3515052B2 (en) | 2004-04-05 |
Family
ID=18725303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000232653A Expired - Fee Related JP3515052B2 (en) | 2000-08-01 | 2000-08-01 | Impulse type heat sealer |
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| Country | Link |
|---|---|
| JP (1) | JP3515052B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009007059A (en) * | 2007-06-29 | 2009-01-15 | Fuji Impulse Kk | Heat-sealer |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006502672A (en) | 2002-10-09 | 2006-01-19 | エクスポディスク インコーポレイテッド | Diffusion apparatus and method for effectively performing white balance operation procedure of electronic camera |
| JP4574121B2 (en) * | 2003-03-31 | 2010-11-04 | 株式会社イシダ | Display body, display body manufacturing method and display body manufacturing apparatus for manufacturing the display body |
| JP2007307812A (en) * | 2006-05-19 | 2007-11-29 | Fujikura Ltd | Impulse welding machine and method therefor |
| JP5416512B2 (en) * | 2009-09-03 | 2014-02-12 | 富士インパルス株式会社 | Impulse heat sealer |
| JP6856934B2 (en) * | 2017-09-12 | 2021-04-14 | 富士インパルス株式会社 | Heat sealer |
-
2000
- 2000-08-01 JP JP2000232653A patent/JP3515052B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009007059A (en) * | 2007-06-29 | 2009-01-15 | Fuji Impulse Kk | Heat-sealer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002037221A (en) | 2002-02-06 |
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