CN100402380C - 密封装置 - Google Patents

密封装置 Download PDF

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Publication number
CN100402380C
CN100402380C CNB028278615A CN02827861A CN100402380C CN 100402380 C CN100402380 C CN 100402380C CN B028278615 A CNB028278615 A CN B028278615A CN 02827861 A CN02827861 A CN 02827861A CN 100402380 C CN100402380 C CN 100402380C
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CN
China
Prior art keywords
heat seal
cutting knife
relative
clamping plate
running surface
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 - Lifetime
Application number
CNB028278615A
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English (en)
Other versions
CN1617815A (zh
Inventor
矢野惠治
吉田浩三
矢野孝林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tetra Laval Holdings and Finance SA
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Tetra Laval Holdings and Finance SA
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Publication of CN1617815A publication Critical patent/CN1617815A/zh
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Publication of CN100402380C publication Critical patent/CN100402380C/zh
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B65B51/24—Applying or generating heat or pressure or combinations thereof to produce bead seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3656—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a layer of a multilayer part to be joined, e.g. for joining plastic-metal laminates
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3668—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special induction coils
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
    • B29C65/7451—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool the severing tool and the welding tool being movable with respect to one-another
    • 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
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72327—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7373—Joining soiled or oxidised materials
    • 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
    • B29C66/8141—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
    • B29C66/81431—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 cavity, e.g. a groove
    • 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
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    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81811—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83541—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
    • B29C66/83543—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement cooperating flying jaws
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    • B29C66/84—Specific machine types or machines suitable for specific applications
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2049—Package shaping devices acting on filled tubes prior to sealing the filling opening
    • 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
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    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/207—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web advancing continuously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
    • B29C66/71—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 composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
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Abstract

一种用来加强包装容器的卫生状态和折片可成形性的密封装置，它包括：热密封夹板；热密封条(29)，它具有工作表面、装备着两个平行排列的加热器而且被固定在该热密封夹板上；相对夹板，它与该热密封夹板相对地布置；相对轨道(28)，它具有工作表面并被固定在该相对夹板上；驱动装置，它用来相对地推进/收回该热密封夹板和相对夹板；加热装置，它在用该热密封条工作表面和该相对轨道工作表面夹住包装材料的同时开动该加热器；以及切刀部分(51)，它包括布置在两个该加热器之间位置的切刀和相对切刀(51)布置的弹性相对切刀(53)；其特征在于，该相对切刀(53)由保持部分(52)保持，该保持部分设置在该热密封条或该相对轨道的工作表面上，并且该相对切刀从该保持工作表面伸出从而被保持住。

Description

密封装置
技术领域
本发明涉及一种密封装置。
背景技术
在填充液体食物例如牛奶、软饮料之类的包装容器传统制造过程中，包括柔性层压材料的幅面料形状的包装材料输入填充机内。在该填充机中，包装材料沿着纵向进行密封从而形成为管状。在向下连续传送该管状包装材料的同时，将液体食物向上填满。将该管状包装材料传送到密封装置，并在用密封单元从两侧夹紧的同时，在该密封装置中按照预先确定的间隔进行横向密封。借助于切断该横向密封部分，就形成多个填满预定数量食物的初步容器，并使该初步容器形成为最终包装容器。
该密封单元相互面对并具有布置成自由前进/后退运动的相对夹板和热密封夹板。相对轨道和热密封条分别布置在该相对夹板和热密封夹板上。
图3是密封装置的草图，该装置用来横向密封已填满内容液体的包装材料。
图5是传统密封单元的切刀相对区段的图示。
图6是透视图，它表示已填满内容液体的容器的折片进行折叠。
在这些图中，参考编号28表示相对轨道，而参考编号29表示热密封条。
呈双片形式的幅面料形状的包装材料10被夹在相对轨道28的工作表面和热密封条29的工作表面之间。
在热密封条29内面对着相对轨道28的工作表面中，布置着具有预定上下间隔、面朝包装材料10并且具有凸起的突出部77的第一、第二感应加热器31、32。
在这种情况下，包装材料10由相对轨道28和热密封条29夹住，并借助于相互进给包装材料10在推动和加热的情况下进行横向密封。
包装材料10具有层压结构，该结构按照从已形成包装容器内侧到外侧的次序包括聚乙烯层、铝箔层、粘结剂层、纸基层以及聚乙烯层。
因此，呈双片形式的包装材料10用相对轨道28和热密封条29夹持住，并通过对于带有凸起的突出部77的第一、第二感应加热器31、32施加密封电压来进行加热。
推动包装材料10的第一部分10a最内部聚乙烯层和第二部分10b最内部聚乙烯层并且主要在对应于第一、第二感应加热器31、32的区域内相互熔化。
然后停止给第一、第二感应加热器31、32施加密封电压，并冷却第一、第二感应加热器31、32的相应部分。
在第一部分10a和第二部分10b内，在对应于第一、第二感应加热器31、32的部分中形成包括第一、第二横向密封部分S1、S2的密封部分S。
随后用切刀部分50切断密封区段S，从而形成容器。
在该切刀部分中，在热密封条29的工作表面上形成沟槽55，以便在嵌入相对轨道28内的切刀51切断包装材料10(10a和10b)时防止切刀51的任何损伤。
在该传统密封装置中，沟槽55在热密封条29和/或热密封夹板的工作表面上形成以便在切刀部分内的切刀51切断包装材料10(10a和10b)时不损伤切刀的刀尖。但是，在包装材料10被相对轨道28的工作表面和热密封条29的工作表面推动以便横向密封时，由于没有对应于沟槽55的包装材料10部分的反向压力，内容液体会作为滞留液59保留在对应于切刀凹陷部分55的包装材料10a和10b之间。
因此，由于隔开的滞留液59单独地保留在包装材料的区段S处，该滞留液的液体可能在消费者使用之前不卫生地变质。
而且，当折片71粘结到容器上形成如图6所示容器时，在该滞留液的液体弄脏粘结区的情况下，折片粘附性会降低。
发明内容
本发明解决传统密封装置的多种问题，其目的在于提供能改进包装容器卫生状况和容器形成的密封装置。
在解决问题的本发明密封装置中，该密封装置包括：(a)热密封夹板；(b)热密封条，它具有两个设置在该热密封夹板前边缘内的平行排列的加热器并具有工作表面；(c)相对夹板，它与该热密封夹板相对地布置；(d)相对轨道，它设置在该相对夹板上并具有工作表面；(e)驱动装置，它用来相对地进给/收回该热密封夹板和相对夹板；(f)加热装置，它在用该热密封条工作表面和该相对轨道工作表面夹住包装材料的同时开动该加热器；以及(g)切刀部分，它包括布置在两个该加热器之间位置上的切刀和弹性的相对切刀；以及
其特征在于，
该相对切刀由保持部分保持，该保持部分设置在该热密封条或该相对轨道的工作表面上，并且该相对切刀从该保持工作表面伸出。
在该本发明优选实施例中，该相对切刀通过与该保持部分配合来进行安装。
在该本发明优选实施例中，该相对切刀从具有人字形截面形状的工作表面伸出。
在该本发明优选实施例中，该相对切刀从具有矩形截面形状的工作表面伸出。
附图说明
图1是本发明实施例密封装置的切刀部分说明性视图。
图2是本发明实施例中相对切刀的详细截面图；
图3是密封装置的示意图示，该装置用来横向密封已填满内容液体的包装材料。
图4是在将该内容液体填满已纵向密封包装材料之后通过横向密封形成容器的说明性视图。
图5是传统密封装置的切刀相对区段的图示。
图6是透视图，它表示已填满内容液体的容器折片进行折叠。
图7是截面图，它表示本发明另一实施例切刀部分的切断功能，以及
图8是本发明其它实施例的相对切刀截面图。
具体实施方式
下面参照附图，详细描述本发明模式。在图1、2、3和4中，包括柔性层压材料的管状包装材料10通过对于幅面料形状的包装材料11、12进行弯曲并通过在纵向上密封两个边缘来形成。
包装材料10被连续地向下传送到密封装置处，并在该密封装置内通过处于预先确定间隔的两个密封单元14、15夹持，而且通过横向密封形成密封区段S。在此期间，该液体食物12向上填满包装材料10。两个密封单元14、15具有相对夹板14a、15a以及热密封夹板14b、15b。相对夹板14a、15a与热密封夹板14b、15b相对地布置。
在安装在相对夹板14a、15a前边缘的相对轨道28和安装在热密封夹板14b、15b前边缘的热密封条29中，安装着作为驱动装置的缸体(未表示)，该缸体相对地进给和收回(在图3中向右和向左方向)热密封夹板14b、15b和相对夹板14a、15a。
一对由相对夹板14a、15a和热密封夹板14b，15b自由摇摆地支承并且引导包装材料10的成形折片21a、21b，使该包装材料10形成为长方形。
如图3所示，借助于将相对夹板14a和热密封夹板14b从密封开始位置推进到包装材料10，密封单元14就从两侧夹住包装材料10。
密封装置14在夹住包装材料10的情况下向下移动，热密封条29和相对轨道28有力地压迫密封区段S，热密封条29借助于感应加热在包装材料10的铝箔层内产生热，于是横向密封包装材料10。
当密封装置15运动到密封开始位置时，借助于密封单元14的密封结束，而且相对夹板15a和热密封夹板15b提前开始启动。
按照这种方式，在密封和在每个密封区段S中部用切刀部分的切刀切断包装材料10之后，就形成初步的容器。
将初步容器最终形成为所需容器的方法为：传送到成形部分(图中未表示)，形成预定形状，以及将折片粘附在容器的顶部和底部。
下文描述使用密封单元14、15的密封方法。
在图1中，在相对轨道28的工作表面和热密封条29工作表面之间呈双片形式的包装材料10被夹住并被横向密封。
第一、第二感应加热器31、32布置在热密封条29与相对轨道28相对的表面内，而且具有预先确定的上下间隔、面对包装材料10并具有凸起的突出部77。第一、第二感应加热器31、32呈管状，并能在加热器内通冷却水。
包装材料10具有层压结构，该结构按照从已形成包装容器内侧到外侧的次序包括聚乙烯层、铝箔层、粘结剂层、纸基层以及聚乙烯层。
包装材料10用相对轨道28和热密封条29夹持住并通过相互向前进给包装材料10来横向密封。
呈双片形式的包装材料10用相对轨道28和热密封条29夹持住，并通过该加热部分的控制器(图中未表示)对于带有凸起的突出部77的第一、第二感应加热器31、32施加密封电压来进行加热。
推动包装材料10的第一部分10a最内部聚乙烯层和第二部分10b最内部聚乙烯层并且主要在对应于第一、第二感应加热器31、32的区域内相互熔化。
然后停止给第一、第二感应加热器31、32施加密封电压，并冷却第一、第二感应加热器31、32的相应部分。
包括第一、第二横向密封区段S1、S2的密封区段S在第一部分10a和第二部分10b内形成在对应于第一、第二感应加热器31、32的部分中形成。
用切刀部分50切断密封区段S，从而形成每个容器。该切刀部分包括嵌入相对轨道28的切刀51和嵌入热密封条29的相对切刀53。
相对切刀53由弹性材料例如软橡胶、硬橡胶、合成树脂、合成柔性材料和天然柔性材料制成，并且通过用来保持该相对切刀的保持部分来进行安装。
根据本发明，该相对切刀被保持在热密封条或相对轨道表面上设置的保持部分内。在该实施例中，该相对切刀从具有人字形截面形状的热密封条29的工作表面伸出。
当切刀切断包装材料10(10a和10b)时，由于来自相对轨道28和用于横向密封的热密封条29对于包装材料10的压力，以及由于对应于切刀部分55的包装材料10的相对切刀弹性反压力，内容液体被挤出，因而在相对切刀53近旁的包装材料10a和10b之间不会产生滞留液。
此外，该相对切刀能尽可能多地控制切刀51刀尖的磨耗损坏，这是因为在通过由保持相对切刀的保持部分安装的切刀51切断包装材料10(10a和10b)步骤中，当切刀51刀尖碰撞弹性缓冲材料时，能将冲击保持在最小程度。所以，切刀寿命能得到长时间保护。
此外，该相对切刀借助图2进行详细描述。
图2(A)表示该相对切刀在包装材料10被相对轨道28和热密封条29压迫之前的状态。
图2(B)表示该相对切刀在包装材料10被相对轨道28和热密封条29压下以便横向密封的状态。
在该图中，R1、R2是各自相对切刀从保持部分伸出的长度。与位移长度R1-R2相当的弹性排斥力P如下表示：
P＝E×S(R1-R2)/Q
其中：E为弹性模量
S为相对切刀位移部分的横截面
然而，根据如图2所示的本发明另一实施例，相对切刀保持部分的K1部分变得比K2部分小，于是该相对切刀通过配合得以保持。
由于该相对切刀在需要时易于更换，用于更换的劳动和时间能最小化。
此外，本发明不局限于上文提及的实施例，基于本发明精神的各种可能变型均不被排除在本发明范围之外。
例如，如图7所示，由于热密封条29没有突出部，该热密封条的工作表面可能是平坦的。
如图7所示，由于在切刀51切断包装材料10(10a和10b)之后弹性相对切刀的变形能使冲击保持在低等级，切刀51的刀尖得到保护不受磨耗损坏。
热密封法可包括超声波加热、电阻加热以及感应加热。
相对切刀的截面形状包括如图8(A)所示的实施例以及图8(B)所示的实施例，图8(A)实施例中相对切刀从具有矩形截面形状的工作表面伸出，而图8(B)实施例中相对切刀从具有矩形截面形状和倾斜表面的工作表面伸出。
如同上文所述，由于滞留液不会停留在密封部分中，该包装材料是卫生的。
在切断时，防止来自滞留液的内装物漏泄和容器壁污染，因而能适当地形成容器。
而且，由于具有由弹性材料制成的相对切刀，切刀寿命能在长时间内得到保护。
相对切刀通过配合在保持部分内而得以保持。
因此，每个人能方便地装卸该相对切刀。
作为与上文所述实施例相反的实施例，布置在相对轨道工作表面内的保持部分能用来保持相对切刀。
工业实用性
本发明密封装置用于机械包装以及填充容器，该容器包装例如牛奶、软饮料之类的液体食物。

Claims (4)

1.一种密封装置，它包括：
(a)热密封夹板；
(b)热密封条，该热密封条具有两个设置在热密封夹板前边缘内的平行排列的加热器，并具有工作表面；
(c)相对夹板，该相对夹板与热密封夹板相对地布置；
(d)相对轨道，该相对轨道设置在相对夹板上并具有工作表面；
(e)驱动装置，该驱动装置用来相对地推进/收回热密封夹板和相对夹板；
(f)加热装置，该加热装置在通过热密封条工作表面和相对轨道工作表面夹住包装材料的同时开动加热器；以及
(g)切刀部分，该切刀部分包括布置在两个加热器之间位置上的切刀和弹性的相对切刀；
其特征在于，
相对切刀由保持部分保持，保持部分设置在热密封条或相对轨道的工作表面上，并且相对切刀从保持工作表面伸出。
2.如权利要求1所述的密封装置，其特征在于，相对切刀通过与保持部分配合来进行安装。
3.如权利要求1所述的密封装置，其特征在于，相对切刀从具有人字形截面形状的工作表面伸出。
4.如权利要求1所述的密封装置，其特征在于，相对切刀从具有矩形截面形状的工作表面伸出。
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US7389623B2 (en) 2008-06-24
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