TW307051B - - Google Patents

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TW307051B
TW307051B TW085110330A TW85110330A TW307051B TW 307051 B TW307051 B TW 307051B TW 085110330 A TW085110330 A TW 085110330A TW 85110330 A TW85110330 A TW 85110330A TW 307051 B TW307051 B TW 307051B
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TW085110330A
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Tetra Laval Holdings & Finance
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    • 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
    • B65B51/16—Applying or generating heat or pressure or combinations thereof by rotary members
    • 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
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0611—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements in a pile
    • B06B1/0618—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements in a pile of piezo- and non-piezoelectric elements, e.g. 'Tonpilz'
    • 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
    • B29C66/81427—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 comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C66/816—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
    • B29C66/8167—Quick change joining tools or surfaces
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Package Closures (AREA)

Description

307051 A7 B7 經濟部中央標準局員工消費合作社印製 五、發明説明（1 ) 技術範圍 本發明係有關於一種用於超音波密封單元之驅動單元之 裝置’該型堪動裝置包括有多數個壓電陶磁片，交錯地設 置在導電金屬板之間，該金屬板則連接至一直流電源，一 平衡荷重具有内外周緣，及—夹扣螺絲。 習知技藝 傳統的超音波密封單元正常包括—轉換器…增強器及 一號角。在該㈣器或料器中，其將電子振㈣換成機 械振盪’在驅動單元的某些型式中，其連接至一直流電 源"這類型之超音波㈣單元則揭露、在瑞典專”請案π 9300918-1 (其爲一輕巧艰麥射_ . _ 、 V 程5型獪封單兀），同時具有一驅動單 疋。這型密封單元具有一中央節點平面，其構成了該單元 义錨碇點’反應本體包圍著該驅動單元，及一號角，具有 狹長、狹有的密封平面。這種密封單元係特別爲了灌裝機 器所叹计製造，這種灌裝機係在用後即丟之包裝盒内灌裝 液體食品。 μ 用於超音波密封單元之普通型驅動單元，包括有多數片 壓電陶磁片，夹合在連接在一直流電源之導電金屬片之 間。孩等陶磁片則是利用夾扣螺絲而固定在密封單元上， 該夾扣螺絲亦同時將平衡荷重固定位。 由於一般施加在平衡荷重及陶磁片上的夫合力都非常的 f二通常爲25MPa或更高，在此情‘下，甚至相常厚的平 衡荷重都會變形’於是施加至壓電陶磁片的負載分佈也因 此被扭曲了。平衡荷重的厚度通常少於其直徑之—半。自 本紙張尺度通用巾晒家縣（CNS )丨4規格（2iQx297公產） (请先閱讀背面之注意事項再填寫本頁)
*tT
J A7 B7 307051 五、發明説明（2 然的，較厚的平衡荷重，變形便小，同時會讓杨在陶磁 片上的負載分佈更爲均勻。但是，使用較厚的平衡荷重也 有缺點，因爲相對地陶磁片的數目便因爲減少，或是必需 做的更薄。這種不平衡的負載分佈會在陶磁上造成更高更 不均勻的負載分佈。陶磁片非常脆，同時對任何型式2張 力或撓曲力都非常敏感。 有一種方法可以在陶磁片上獲得更爲均勻的負荷分佈， 即採用水平分割之平衡荷重。但是’它的缺點在於每—片 個別平衡荷重會變得太薄。而這種情形會造成每—單位平 衡荷重的彈性過大，於是因爲變形的.緣故，而根本無法得 到均勻的負載分佈4外，分割成小塊的平衡荷重在製造 上更困難，成本亦增加。同時單位平衡荷重的彈性愈大， 接觸面間產生的噪音亦愈大。再者’這種分割單位平衡荷 重會有較高之能源損失。 發明之目的 乂本^明之目的在於提供一種具有平衡荷重之驅動單元， δ心法、封早元在操作時，該平衡荷重可以在恩電陶磁片之 整個平面上提供更爲均勻之負載分佈。 本發明之進一目的在於可以製造—種用於驅動單元之平 衡荷重，其不會具任何分割平衡荷重所具有之缺點。 解決 Λ這些及其他根據本發明之目的，-可藉由提供一種特徵之 裝置而達成，其中在該平衡荷重之内周緣處設置有一槽道 以平衡夾扣負載。 表紙張尺度適财國國家橾準（⑽）Μ規格（2丨〇>< 297公慶 --------γ y------訂------^ (請先閔讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作杜印製 經濟部中央樣準局員工消費合作社印製 307051 五、發明説明（3 ) 本發明較佳實施例之進-步特徵，則揭露在申請專利範 固之附屬項内。 圖示之簡要説明 本發明之-較佳實施例’將配合圏示做更詳細地説明， 其中： 圖1爲一超音波密封單元之立體圖； 圖2爲傳統驅動單元之負載分佈圖； 圖3爲根據本發明驅動單元之負載分佈；及 圖4爲根據本發明之驅動單元。 較佳實施例之説明 每—型超音波密封單元丨都必需具備—驅動單元2，如圖 揭露之密封單元夏。圖i所揭露之密封單元i係特別設計 製U以便安裝在灌裝機器之有限空間内，灌裝機器係用 於將液趙食品灌裝在用後即丟之包裝盒内，㈣單元^ 全。I5長度則剛好爲波長之_半。& 了堪動單元2，該密封 單元1具有反應本體3,包圍住驅動單元2，一設置在中央 之節點平面4，密封單元1即固定在該處，及一號角5,具 有—狹長、狹窄之密封平面6 ^根據本發明之裝置，可以 很f易地安裝在傳统超音波密封單元1之驅動單元2上，該 型密封單元1包括轉換器，增強器及一號角。 .孩达封單元1之驅動單元2係連接在一直流電源上（圖中 手不）’以將電位勢轉換成機械位移，該位移轉換成振 盪，以利單701進行密封工作。該驅動單元2包括有多數片 具内部及外部周緣之壓電陶磁片7 »在各壓電陶磁片7間設 -6 - (請先閲讀背面之注意事項再填寫本頁)
-•IT 4...
'發明説明（4 經濟部中央榡準局員工消費合作社印製 置有導電金屬板8，最好該金屬板係採用鎳或鈹青銅製 造。該金屬板8係連接至一直流電源（圖中未示），因此該 等壓電陶磁片7係以並聯連接。 該等鋈電陶磁片7可承受著極大的壓縮應力，但是卻非常 跪’並對張性及撓曲性應力非常敏感。於是，當該超音波 密封單元1在運轉時，該壓電陶磁片7必需是在受壓力負荷 下，該負荷係以夾扣力出現，並且較由驅動單元2產生之 最大幅度還要高。該夾扣力則是由平衡荷重9及夾扣螺絲 10所產生。 平衡荷重9係由多數片金屬板所構、成，其具有内及外周 緣’並且最好疋採用剛性材料來製造，如鋼片。平衡荷重 9會施加部份的夹扣力至壓電材料片7上，同時也部份地做 爲反應質量’以獲得特殊之共振頻率，該共振頻率係用於 激發堪動單元2。夹扣螺絲10則將平衡荷重9，該陶磁片7 及金屬板8在特定之夹扣力下固定在一起，同時將驅動單 元2固定在密封單元丨上。 實務上，作用在陶磁片7上的夹扣力愈是均勻愈好，因 爲陶磁片7對不均勻負荷非常敏感。但是，如圖2所示，在 習知平衡荷重上所進行之改良，卻會因爲高達乃让以或更 高之夹扣力而出現變形，因此集中在平衡荷重9内周緣之 壓縮負荷會高於集中在外周緣之壓縮負荷。這種在陶磁片 7邊緣產生高負荷是非常不利的，因爲陶磁片非常跪。這 種問題可藉著採用分割平衡荷重9來而獲得部份的改善， 因爲分割平衡荷重9可提供較均勻的負載分佈。但是，分 本纸張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） --------------IT------^ (請先閣讀背面之注意事項再填寫本頁) s〇7〇5l
五、發明説明（ 經濟部中夬榡準局員工消費合作社印製 割平衡荷重較薄，因此較富彈性。其結果是，因爲單位平 衡荷重無可避免的變形，因此完全無法達到均句負荷分 佈^丨於彈性增加，單元分割平衡荷重9接觸平面間產 生之噪音也愈大。此外，分割平衡荷重9亦造大量的能量 損失。 請參閲圖3，根據本發明則可以得到夾扣負荷之均勻分 佈。請參閲圖3及圖4所示，根據本發明可以達成夾扣負荷 ^均勻分佈，其係在平衡荷重9之内周緣設置一槽道12。 藉由在平衡荷重9之内周緣設置一槽道12，沿著平衡荷重9 材料之力量便被迫轉彎朝向外周緣，.於是在陶磁片7整個 平面上便得到了更佳之均勻負荷分佈，甚至平衡荷重的厚 度僅有直徑的一半亦如是。 槽道12繞著平衡荷重9之整個内周緣延伸，同時平衡荷 重9必需設置在中央。該槽道12可以爲直線型，u型或v t 槽道12必需進一步地具有一緩和的半徑η，即半徑I〗 愈大愈好。在較佳之實施例中，該槽道12爲¥字型。較小 的半徑13或直角會使平衡荷重9容易產生裂缝。該槽道以 ，其最大範圍，係佔該平衡荷重9厚度A之百分之2〇至8〇 。在較佳之實施例中，該槽道12係佔該平衡荷重9厚度A 之百分之40至50。該槽道12之深度係佔該平衡荷重9在該 内周緣及外周緣間材料厚度B之百分之μ至40 ;在較佳之 ★施例中，該槽道12之深度佔該平衡荷重9材料厚度B之百 分之20至30。如圖3及圖4所示，該平衡荷重9可具有不同 的直徑。在平衡荷重9之上部份，其内徑〇1係由該夾扣螺 (請先閲讀背面之注意事項再填寫本頁)
307051 at B7 五、發明説明（6 ) 絲10之直徑決定，而在平衡荷重9之下部份，其内徑〇2係 由該陶磁片7之内徑決定。直徑D2必需與陶磁片7之内徑相 等。 由以上的説明可以很明顯地看到，本發明用於超音波密 封單元1之驅動單元2之裝置可以在該陶磁片7上提供更爲 均勾的負荷分佈。該裝置使得堪動單元2較傳統驅動單元2 之效率更高，同時該裝置亦使得驅動單元2具有更長之壽命。 本發明之範圍並不僅限制於揭露在圖中之實施例，在不 脱離以下申請專利範圍之精神.及範卧下，可以有許多不同 之修飾實施。 (請先閱讀背面之注意事項再填寫本頁)
J 經濟部中央標準局員工消費合作社印製 準 I標 I家 一國 -國 |中 用 適 度 尺 ,紙 本
S N 一资 一公

Claims (1)

  1. 39(70081 307051 A8 B8 C8 D8 六、申請專利範圍 1. 一種用於超音波密封單元（1)之驅動單元（2)之裝置， 該型驅動裝置（2)包括多數個壓電陶磁片（7)交錯於導 電金屬板（8 )之間，該金屬板係與一直流電源連接，一 平衡荷重（9 )具有内外周緣，及一夹扣螺絲（10)，其特 徵在於在該平衡荷重（9)之内周緣處設置有一槽道（12) ，用以平衡夹合荷重。 2. 根據申請專利範圍第1項之裝置，其特徵在於該槽道（12) 係設置在該平衡荷重（9 )之内周緣。 3 .根據申請專利範圍第1項之裝置’其特徵在於該槽道（12) 呈V-字型。 . 4. 根據申請專利範圍第丨項之裝置，其特徵在於該槽道（12) 之深度係在該平衡荷重（9)厚度（A)之百分之二十至八 十之間。 5. 根據申請專利範圍第丨項之裝置，其特徵在於該槽道（12) 之深度係在該平衡荷重（9)材料厚度（B)之百分之十五 至四十之間。 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製
TW085110330A 1995-06-19 1996-08-24 TW307051B (zh)

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KR970001152A (ko) 1997-01-21
AR002516A1 (es) 1998-03-25
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CN1145990A (zh) 1997-03-26
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EP0749901A1 (en) 1996-12-27
JPH09103740A (ja) 1997-04-22
RU2175936C2 (ru) 2001-11-20
CN1093785C (zh) 2002-11-06
CA2179445C (en) 2005-09-27
CA2179445A1 (en) 1996-12-20
DE69601980T2 (de) 1999-08-05
SE503822C2 (sv) 1996-09-16
ATE178548T1 (de) 1999-04-15
DE69601980D1 (de) 1999-05-12
ES2130719T3 (es) 1999-07-01
DK0749901T3 (da) 1999-10-18
KR100232502B1 (ko) 1999-12-01
JP3727725B2 (ja) 2005-12-14

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