TWI574888B - 深拉包裝機 - Google Patents

深拉包裝機 Download PDF

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Publication number
TWI574888B
TWI574888B TW102125240A TW102125240A TWI574888B TW I574888 B TWI574888 B TW I574888B TW 102125240 A TW102125240 A TW 102125240A TW 102125240 A TW102125240 A TW 102125240A TW I574888 B TWI574888 B TW I574888B
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Taiwan
Prior art keywords
film
packaging machine
top film
held
deep drawing
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TW102125240A
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English (en)
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TW201404666A (zh
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望月克
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原敏昭
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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
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/02—Feeding sheets or wrapper blanks
    • B65B41/04—Feeding sheets or wrapper blanks by grippers
    • 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
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/261—Handling means, e.g. transfer means, feeding means
    • 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
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7891—Means for handling of moving sheets or webs of discontinuously moving sheets or webs
    • 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
    • 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
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • 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
    • B29C66/80—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
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/02—Feeding sheets or wrapper blanks
    • 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
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • 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
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/08—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of fluid pressure
    • B65B47/10—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of fluid pressure by vacuum
    • 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
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/003—Delivering or advancing articles from machines; Advancing articles to or into piles by grippers
    • B65H29/005—Delivering or advancing articles from machines; Advancing articles to or into piles by grippers by chains or bands having mechanical grippers engaging the side edges of articles, e.g. newspaper conveyors
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0009—Cutting out
    • B29C2793/0018—Cutting out for making a hole
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/18—Thermoforming apparatus
    • 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
    • B29L2031/7162—Boxes, cartons, cases
    • B29L2031/7164—Blister packages

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Closing Of Containers (AREA)

Description

深拉包裝機
本發明係關於為了包裝食品等所使用的深拉包裝機，尤其是關於可以製造包裝容器而不會產生包裝膜材之廢料，藉此得以實現可減少膜材費用、產業廢棄物處理費、及二氧化碳排放量的深拉包裝機。
在習知技術中，對作為供包裝食品等所使用的深拉包裝機而言，如第6圖所示之深拉包裝機1已為眾所週知。基本上，深拉包裝機1的構成，係為將食材等(未圖示)置入已成型為凹狀的底膜2後，蓋上頂膜3，利用密封裝置4將其密封，而製得包裝有食材等之容器5。
還有，在第6圖中，元件符號6係表示用於藉模具將底膜2成型為凹狀的成型裝置，7表示底膜2的原材捲(bottom film roll)，8表示頂膜3的原材捲(top film roll)，9表示將已密封之底膜2及頂膜3朝著對其移送方向呈垂直之方向予以切斷的橫向切斷裝置(cross cutter device)，10表示將已密封之底膜2及頂膜3朝著與其移送方向呈平行之方向予以切斷的長向切斷裝置(length-cutter device)，11係表示用於將底膜2朝成型裝置6引導的內饋輥(in-feeding roller)。
第7圖係為將深拉包裝機1之內饋輥11附近予以放大顯示的圖示。如圖所示，深拉包裝機1中，以移送底膜2的移送裝置之構成方式而言，係具有：用以挾持底膜2之兩側緣的挾持爪12；固定挾持爪12的環鏈(endless chain)13；以及繞掛環鏈13的鏈輪14。在此，藉由未圖示馬達的驅動，鏈輪14會轉動，藉此將底膜2朝圖中箭號方向移送。
再者，第8圖係顯示挾持爪12及環鏈13的詳細構造。如圖所示，挾持爪12的構成，係由上側爪15、下側爪16、以及彈簧17所組成，藉由彈簧17的彈壓作用，使上側爪15與下側爪16密接，令挾持爪12閉合以挾 持底膜2的形態。而且，如第7圖所示，挾持爪12藉由同軸地附設於鏈輪14之凸輪板(未圖示)的作用，在鏈輪14的位置處，上側爪15與下側爪16會形成打開的狀態。而且，此時，挾持爪12會如第7圖及第9圖所示，成為只有上側爪15一面移動到外側同時打開的狀態。
底膜2藉由設計成上述形態之構造的挾持爪12將兩側緣予以挾持，並利用成型裝置6成形為凹狀後，置入食材等(未圖示)，然後，如第6圖所示，蓋上頂膜3，再利用密封裝置4予以密封。此時，如第10圖所示，由挾持爪12在鏈輪14之位置處將底膜2挾持後，一邊持續挾持底膜同時進行移送，直到長向切斷裝置10之位置為止。此外，頂膜3在朝密封裝置4移送之前，與底膜2同樣，利用挾持爪12挾持其兩端緣，然後，與成型為凹狀後之底膜2一起朝密封裝置4移送。
其次，密封裝置4藉由第11圖所示之步驟將底膜2與頂膜3密封。此外，如圖所示，密封裝置4基本上由上模具4a、下模具4b、和密封熱板18所構成。
首先，如第11圖(A)所示，利用挾持爪12挾持的底膜2及頂膜3移送到已上下打開的上模具4a與下模具4b之間。之後，如第11圖之(B)所示，下模具4b上升，使上模具4a與下模具4b閉合。與此同時，使空氣從分別設於上下模具4a、4b的通氣孔19a、19b抽除，使容器5之內部形成真空狀態。
接著，如第11圖(C)所示，密封熱板18下降，利用熱熔接使底膜2與頂膜3密封，以執行容器5之密封。然後，在密封熱板18上升之同時，下模具4b下降，使上模具4a與下模具4b打開，而回到第11圖(A)的狀態。這些第11圖(A)至(C)的步驟係重複進行，以進行密封裝置4之密封步驟。
此外，第11圖(B)的步驟中，容器5內部之空氣如複數個小箭號所示，係從底膜2之兩側附近經過設在下模具4b的通氣管20，朝容器5之外側抽出。在此，如第12圖所示，底膜2沿其兩側緣設有複數個衝孔21。由於該衝孔21之位置和通氣管20之開口端20a的位置係形成一致，故容器5內部空氣會穿過衝孔21朝通氣管20流動。
還有，衝孔21在底膜2移送到密封裝置4之前，利用同軸地附設在鏈輪14的衝切用齒輪等(未圖示)開設在底膜2。而且，在開設衝孔21時，為 了使衝切時的切屑不會掉落，通常，其穿孔形狀經刻意設計。同時，因為頂膜3之存在，容器5內部之空氣並不會從上模具4a的通氣孔19a抽除，但為了保持容器5周圍的壓力平衡，也從通氣孔19a進行脫氣。
不過，在使用具有此種構成的深拉包裝機1來製造容器5時，設置衝孔21就成為必要而不可或缺。因為，若不設衝孔21，則空氣無法從容器5抽出。因此，為了確保設置衝孔21所需之空間，習知技術乃在底膜2的兩側緣設置如第12圖之S所示之具有預定寬度的多餘部分。然後，該多餘部分S因在容器5會成為無用的部分，故必須在容器5完成前予以去除，通常在製造時係利用長向切斷裝置10當作廢料切掉。
然而，經此處理而切除的廢料，必須當成廢棄物來處理，故有因該項處理而費時費事的問題。
在此種情形下，本案發明人就以解決以上問題的方法與手段一再專心銳意進行檢討，其結果，乃瞭解到將挾持爪從預定位置的底膜2或頂膜3移開的方式來構成深拉包裝機，即可解決上述問題，從而研創了本發明。
同時，在申請本發明時，經本案發明人及申請人調查過去專利文獻等的結果，在有關深拉包裝機方面，雖可發現下述的文獻，但並無法發現有詳述本發明技術性思想等的專利文獻。
【先前技術文獻】
【專利文獻】
【專利文獻1】日本特開平10-129632號公報
【專利文獻2】日本特開2005-225540號公報
本發明係有關為了包裝食品等所使用之深拉包裝機，其目的在提供特別能製造包裝容器而不會產生膜材廢料，藉此得以實現膜材費用、產業廢棄物處理費及二氧化碳排放量之減少的深拉包裝機。
作為用以達成上述目的之手段，本發明的深拉包裝機具備：密封裝置，以上模具和下模具挾住頂膜和底膜進行密封；挾持爪，挾持頂膜及/或 底膜的兩側緣；以及移送裝置，將利用該挾持爪所挾持之頂膜及/或底膜進行移送，其特徵在於：該深拉包裝機之構成方式為：在前述密封裝置之上模具和下模具閉合時，位在藉該等上模具和下模具所挾持之範圍內的頂膜及底膜，會與前述挾持爪形成非接觸狀態。
再者，本發明之深拉包裝機具備：密封裝置，以上模具和下模具挾住頂膜和底膜進行密封；挾持爪，挾持頂膜及/或底膜的兩側緣；以及移送裝置，將利用該挾持爪所挾持之頂膜及/或底膜進行移送，其特徵在於：該深拉包裝機之構成方式為：在前述密封裝置之上模具和下模具閉合時，位在藉該等上模具和下模具所挾持之範圍內的頂膜及底膜，會在與前述挾持爪之間產生空隙。
此外，本發明之深拉包裝機具備：密封裝置，以上模具和下模具挾住頂膜和底膜進行密封；挾持爪，挾持頂膜及/或底膜的兩側緣；移送裝置，將利用該挾持爪所挾持之頂膜及/或底膜進行移送；以及刀具，將已密封之頂膜及底膜在預定的位置進行切斷，其特徵在於：該深拉包裝機之構成方式為：在前述密封裝置之上模具和下模具閉合時，位在藉該等上模具和下模具所挾持之範圍內的頂膜及底膜，會與前述挾持爪形成非接觸狀態；而且，位於與前述刀具接觸範圍內的頂膜及底膜，均會與前述挾持爪形成非接觸狀態。
又，本發明之深拉包裝機具備：密封裝置，以上模具和下模具挾住頂膜和底膜進行密封；挾持爪，挾持頂膜及/或底膜的兩側緣；移送裝置，將利用該挾持爪所挾持之頂膜及/或底膜進行移送；以及刀具，將已密封之頂膜及底膜在預定的位置進行切斷，其特徵在於：該深拉包裝機之構成方式為：在前述密封裝置之上模具和下模具閉合時，位在藉該等上模具和下模具所挾持之範圍內的頂膜及底膜，會與前述挾持爪之間產生空隙；而且，位於與前述刀具接觸範圍內的頂膜及底膜，與前述挾持爪之間亦產生空隙。
若依本發明，可以提供一種有關為了包裝食品等所使用之深拉包裝機，特別是能夠製造包裝容器而不會產生膜材廢料，藉此得以實現膜材費用 、產業廢棄物處理費及二氧化碳排放量之減少的深拉包裝機。
1‧‧‧深拉包裝機
2‧‧‧底膜
3‧‧‧頂膜
4‧‧‧密封裝置
4a‧‧‧上模具
4b‧‧‧下模具
5‧‧‧容器
6‧‧‧成型裝置
7‧‧‧底膜2之原材捲
8‧‧‧頂膜3之原材捲
9‧‧‧橫向切斷裝置
10‧‧‧長向切斷裝置
11‧‧‧內饋輥
12‧‧‧挾持爪
13‧‧‧環鏈
14、14a-14k‧‧‧鏈輪
15‧‧‧上側爪
16‧‧‧下側爪
17‧‧‧彈簧
18‧‧‧密封熱板
19a、19b‧‧‧通氣孔
20‧‧‧通氣管
21‧‧‧衝孔
22‧‧‧膜材暫時結合裝置
23‧‧‧回行滾子
24‧‧‧匣式加熱器
24a‧‧‧突設部
25‧‧‧氣缸
26‧‧‧膜材暫時結合點
27‧‧‧軸
28‧‧‧滾子
29‧‧‧打開塊
29a‧‧‧設於打開塊29之溝
30‧‧‧外板
31‧‧‧鏈條導件
32‧‧‧套筒
第1圖為顯示本發明實施形態之深拉包裝機1的圖；第2圖為顯示本發明實施形態中之底膜2的圖；第3圖為顯示本發明實施形態之深拉包裝機1的圖；第4圖為顯示膜材暫時結合裝置22的圖；第5圖為顯示本發明實施形態中之底膜2的圖；第6圖為顯示深拉包裝機1的圖；第7圖為顯示深拉包裝機1所具備之移送裝置的圖；第8圖為顯示挾持爪12及環鏈13的圖；第9圖為顯示挾持爪12及環鏈13的圖；第10圖為顯示習知深拉包裝機1的圖；第11圖為顯示習知深拉包裝機1之密封裝置4的圖；第12圖為顯示習知深拉包裝機1中之底膜2的圖；第13圖為顯示本發明實施形態之鏈條13的圖；以及第14圖為顯示本發明實施形態之鏈條13的圖。
〔發明的實施形態〕
以下，就本發明深拉包裝機的實施形態加以說明。此外，本實施形態之深拉包裝機的基本構成，與第6圖所示之習知技術並無不同，故此處之說明中，係直接援用第6圖及第6圖中所用的符号。
本實施形態之深拉包裝機1和習知技術不同之點，如第1圖所示，在密封裝置4及橫向切斷裝置9的動作位置處，挾持爪12並不挾持底膜2或頂膜3，而是以離開底膜2或頂膜3再動作的方式構成。而且，第1圖中，存在於最初挾持底膜2之位置的鏈輪係當作第1鏈輪14a，此後環鏈13所接觸之鏈輪，在本說明書中係依序以第2至第11鏈輪(14b至14k)來表示。
首先，在密封裝置4的動作位置處，如圖所示，環鏈13被引導至第2鏈輪14b及第3鏈輪14c，通過下模具4b之下側，然後，被引導至第4鏈 輪14d及第5鏈輪14e，再回復至可挾持底膜2及頂膜3之高度為止。
在此，第2鏈輪14b同軸地附設有凸輪板(未圖示)，藉該凸輪板之作用，在第2鏈輪14b之位置處，上側爪15與下側爪16會打開，藉此作用，挾持爪12得以從底膜2及頂膜3離開。
然後，第5鏈輪14e亦同軸地附設有凸輪板(未圖示)，藉該凸輪板之作用，在第5鏈輪14e之位置處，上側爪15與下側爪16會閉合，藉此作用，挾持爪12得以挾持底膜2及頂膜3。
亦即，本實施形態之深拉包裝機1之構成特徴係在：在密封裝置4之上模具4a和下模具4b閉合時，位於藉該等上模具4a和下模具4b所挾持之範圍內的頂膜3及底膜2，與挾持爪12係形成非接觸狀態。
而且，換句話也可說，關於該特徴，本實施形態之深拉包裝機1的構成方式係：在密封裝置4之上模具4a和下模具4b閉合時，位在藉該等上模具4a和下模具4b所挾持之範圍內的頂膜3及底膜2，與挾持爪12之間會產生空隙。
又，在橫向切斷裝置9之動作位置處，如圖所示，環鏈13被引導至第6鏈輪14f及第7鏈輪14g，並移動至較底膜2及頂膜3高度靠下側之處，然後，引導至第8鏈輪14h，再回歸至可挾持底膜2及頂膜3之高度為止。
在此，第6鏈輪14f亦同軸地附設有凸輪板(未圖示)，藉該凸輪板之作用，在第6鏈輪14f之位置處，上側爪15與下側爪16會打開。藉此機制，挾持爪12得以從底膜2及頂膜3離開。
又，第8鏈輪14h亦同軸地附設有凸輪板(未圖示)，藉該凸輪板之作用，在第8鏈輪14h之位置處，上側爪15與下側爪16會閉合。藉此機制，挾持爪12得以挾持底膜2及頂膜3。
亦即，本實施形態之深拉包裝機1之構成特徴係在；挾持爪12和位於與橫向切斷裝置9接觸範圍內之頂膜3或底膜2都成為非接觸狀態。
而且，有關該特徴，換句話也可說，本實施形態之深拉包裝機1的構成係在：位在與橫向切斷裝置9接觸範圍內之頂膜3或底膜2，也與挾持爪12之間產生空隙。
此外，以上實施形態中，藉由將環鏈13降到比可挾持底膜2及頂膜3之高度更低，挾持爪12就會與頂膜3及底膜2形成非接觸狀態，但只要挾 持爪12能與頂膜3及底膜2形成非接觸狀態，其手段並無特別限定。
例如，如第13圖所示，藉由將鏈條13之軸27設成較一般為長，挾持爪12也可與頂膜3及底膜2形成非接觸狀態。以下，有關該實施形態之詳細內容，一併加以說明。
第13圖所示之鏈條13，其軸27甚長，鏈條13之滾子28可以沿著軸27大幅横向移動。因此，具備本實施形態之鏈條13的深拉包裝機1中，藉由將形成如第14圖所示之剖面形狀的打開塊29(opener block)配置於挾持爪12及鏈條13之下側，並如第14圖(a)至(b)所示使其上升，然後横方向移動，俾在令鏈條13之外板30横向移動之同時，得以使挾持爪12打開。
所以，藉由該構成，具備本實施形態之鏈條13的深拉包裝機1，在密封裝置4之上模具4a和下模具4b閉合時，在該等上模具4a和下模具4b所挾持之範圍內的位置處、或與橫向切斷裝置9接觸之範圍內的位置處，挾持爪12會與頂膜3及底膜2形成非接觸狀態。
此外，打開塊13移動之位置處，固定設置有如第14圖所示之鏈條導件31，即使打開塊29横向移動，滾子28也不會隨著横向移動。此外，第14圖中，29a為設在打開塊29的溝，其係用以藉打開塊29使外板30沿著外軸27横向移動的溝。
又，本實施形態之構成形態上，如第13圖所示，軸27與滾子28之間，即使因穿過套筒32而對鏈條13施加張力的情況中，也只有套筒32會受到該張力，滾子28可以沿著軸27横向移動，沒有阻力。
以上實施形態之深拉包裝機1，由於係形成為如上述的構成，在利用密封裝置4將底膜2及頂膜3密封時，其兩側緣不會被挾持爪12挾到。因此，在將容器5內部抽成真空狀態時，可以從底膜2及頂膜3的兩側緣抽除空氣，故沒必要在底膜2設置衝孔21。因而，若使用本實施形態之深拉包裝機1，可以使用如第2圖所示之不需設置衝孔用空間的底膜2，可以製造容器5而不會產生廢料。藉此得以實現產業廢棄物處理費、及二氧化碳排放量的減少。
再者，如使用以上實施形態之深拉包裝機1，除了不需設置衝孔21用空間，又不必考慮在密封裝置4及橫向切斷裝置9之動作位置處因挾持爪12所導致的干擾，就底膜2及頂膜3之任一者而言，均可使用寬度較習知 技術為窄的材料。藉此，可以減少膜材費用。此外，若依本案發明人之計算，現在的一般膜材寬度為420mm，而本發明可改用膜材寬度380mm的製品，從寬度減少直接反映在膜材價格的事實來看，實際上，可認為膜材費用減少將近10%。
接著，就本發明之其他實施形態加以說明。如第3圖之中央附近所顯示，本實施形態之深拉包裝機1與前述實施形態相異之點，在於又設有膜材暫時結合裝置22。如圖所示，膜材暫時結合裝置22係以配置於頂膜3之回行滾子23與密封裝置4之間的環鏈13上側，俾在利用密封裝置4將底膜2和頂膜3密封之前，暫時將底膜2與頂膜3結合而構成。
第4圖係顯示膜材暫時結合裝置22的基本構造。如圖所示，膜材暫時結合裝置22由匣式加熱器24與氣缸25所構成。匣式加熱器24之下側設有以熱能可傳遞到其前端的方式構成的三個突設部24a。再者，匣式加熱器24形成為可藉氣缸25上下動作的形態，且在密封裝置4的前面處，利用突設部24a之熱使底膜2與頂膜3溶接而暫時結合。第5圖係顯示藉膜材暫時結合裝置22而暫時結合之狀態的底膜2與頂膜3，本圖中，26係表示藉突設部24a之熱予以溶接的暫時結合點。
利用具備這種膜材暫時結合裝置22，本實施形態之深拉包裝機1中，因底膜2與頂膜3施以暫時結合，故在通過密封裝置4時，即使不被挾持爪12挾持，也可防止底膜2從頂膜3垂下，而且，可以有效防止底膜2與頂膜3朝寬度方向偏移。暫時結合點26的面積非常小，相鄰結合點彼此之間隔也很充分，在暫時結合後的密封裝置4處將空氣從容器5抽除時，也不會特別造成問題。
〔產業上的可利用性〕
如以上所說明，若依本發明，係有關為了包裝食品等所使用之深拉包裝機，能夠提供特別能製造包裝容器而不會產生膜材廢料，藉此得以實現膜材費用、產業廢棄物處理費及二氧化碳排放量之減少的深拉包裝機。
2‧‧‧底膜
3‧‧‧頂膜
4‧‧‧密封裝置
4a‧‧‧上模具
4b‧‧‧下模具
6‧‧‧成型裝置
9‧‧‧橫向切斷裝置
10‧‧‧長向切斷裝置
12‧‧‧挾持爪
13‧‧‧環鏈
14a~14k‧‧‧鏈輪

Claims (4)

  1. 一種深拉包裝機，具備：密封裝置，以上模具和下模具挾住頂膜和底膜進行密封；挾持爪，挾持頂膜及/或底膜的兩側緣；以及移送裝置，將利用該挾持爪挾持的頂膜及/或底膜進行移送，其特徵在於：該深拉包裝機之構成方式為：在前述密封裝置之上模具和下模具閉合時，位在藉該等上模具和下模具所挾持之範圍內的頂膜及底膜，係與前述挾持爪形成非接觸狀態。
  2. 一種深拉包裝機，具備：密封裝置，以上模具和下模具挾住頂膜和底膜進行密封；挾持爪，挾持頂膜及/或底膜的兩側緣；以及移送裝置，將利用該挾持爪挾持的頂膜及/或底膜進行移送，其特徵在於：該深拉包裝機之構成方式為：在前述密封裝置之上模具和下模具閉合時，位在藉該等上模具和下模具所挾持之範圍內的頂膜及底膜，在與前述挾持爪之間會產生空隙。
  3. 一種深拉包裝機，具備：密封裝置，以上模具和下模具挾住頂膜和底膜進行密封；挾持爪，挾住頂膜及/或底膜的兩側緣；移送裝置，將利用該挾持爪所挾持的頂膜及/或底膜進行移送；以及刀具，將已密封之頂膜及底膜在預定的位置進行切斷，其特徵在於：該深拉包裝機之構成方式為：在前述密封裝置之上模具和下模具閉合時，位在藉該等上模具和下模具所挾持之範圍內的頂膜及底膜，係與前述挾持爪形成非接觸狀態；而且，位於與前述刀具接觸範圍內的頂膜及底膜，均與前述挾持爪形成非接觸狀態。
  4. 一種深拉包裝機，具備：密封裝置，以上模具和下模具挾住頂膜和底膜進行密封；挾持爪，挾持頂膜及/或底膜的兩側緣；移送裝置，將利用該挾持爪挾持的頂膜及/或底膜進行移送；以及刀具，將已密封之頂膜及底膜在預定的位置進行切斷，其特徵在於：該深拉包裝機之構成方式為：在前述密封裝置之上模具和下模具閉合時 ，位在藉該等上模具和下模具所挾持之範圍內的頂膜及底膜，係與前述挾持爪之間產生空隙；而且，位於與前述刀具接觸範圍內的頂膜及底膜，與前述挾持爪之間也會產生空隙。
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