CN104812673A - 用于在管状袋制造设备中制造包装单元的方法 - Google Patents

用于在管状袋制造设备中制造包装单元的方法 Download PDF

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CN104812673A
CN104812673A CN201380053875.1A CN201380053875A CN104812673A CN 104812673 A CN104812673 A CN 104812673A CN 201380053875 A CN201380053875 A CN 201380053875A CN 104812673 A CN104812673 A CN 104812673A
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sealing device
film
transverse
transverse sealing
sealing
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彼得·鲁库斯
马库斯·斯克马克泰尔
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Hastamat Verpackungstechnik GmbH and Co KG
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Hastamat Verpackungstechnik GmbH and Co KG
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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
    • 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
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/067—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it the web advancing continuously
    • 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
    • B65B23/00—Packaging fragile or shock-sensitive articles other than bottles; Unpacking eggs
    • B65B23/10—Packaging biscuits
    • 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
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/343—Making tension-free or wrinkle-free joints
    • B29C66/3432—Making tension-free or wrinkle-free joints by holding the material loose or tension-free during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—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
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/005—Packaging other articles presenting special problems packaging of confectionery
    • 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
    • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
    • B65B35/30—Arranging and feeding articles in groups
    • B65B35/44—Arranging and feeding articles in groups by endless belts or chains
    • 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
    • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
    • B65B35/30—Arranging and feeding articles in groups
    • B65B35/50—Stacking one article, or group of articles, upon another before packaging
    • 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
    • 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
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • 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
    • B65B9/10—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
    • 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
    • B29C65/02—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
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

本发明涉及一种用于在管状袋制造设备中制造包装单元(20)的方法。竖直输送盘状产品(11)，盘状产品(11)在部分堆(10)中一个位于另一个的上方，以及采用通过移送装置平行于产品输送的膜网对盘状产品(11)进行包裹。为了形成膜管(12)，膜网通过纵向密封装置设有纵向密封接缝，膜网随后通过横向密封装置(14)在部分堆的上方和下方设有横向密封接缝(18)，横向密封装置(14)由独立于移送装置的驱动装置驱动，并且在密封装置为了密封的目的而接触膜网时，横向密封装置与膜网在相同方向上运动。在密封装置为了密封的目的而接触膜管时，横向密封装置在与膜管的输送方向相反的方向上相对于膜管进行竖直运动。

Description

用于在管状袋制造设备中制造包装单元的方法
技术领域
本发明涉及一种用于在管状袋成型、填充和密封设备中制造包装单元的方法，该方法包括：竖直输送盘状产品，盘状产品在部分堆(portion stack)中一个位于另一个的上方，以及采用通过移送装置平行于产品输送的膜网对产品进行包裹，其中，为了形成膜管，膜网通过纵向密封装置设有纵向密封接缝，膜网随后还通过横向密封装置在部分堆的上方和下方设有横向密封接缝，该横向密封装置由独立于移送装置的横向密封驱动装置驱动，并且在密封装置为了密封的目的而接触膜网时，该横向密封装置与膜网在相同方向上运动。
背景技术
当制造管状袋时，通过铸造肩部(molding shoulder)对最初作为平的元件进给到该铸造肩部中的膜网进行成形以形成塑料管，该塑料管具有重叠的纵向接合部并用于容纳以平行于膜网的方式输送至膜网并且在部分堆中一个位于另一个上方的产品。在通过纵向密封装置对纵向接合部密封之后，通过用于制造包装单元的横向密封装置形成横向密封接缝，在每种情况下，包装单元容纳在输送方向上的一排中一个位于另一个后面的一个或多个部分堆。
通过在部分堆中将一个盘状产品放置在另一个的上方，尤其是在在三明治饼干中具有奶油夹心的饼干和类似物的情况下，已经表明由于形成横向密封接缝，在膜网中产生拉应力，该拉应力可引起作用在饼干上的径向应力，使得三明治饼干在奶油夹心中形成楔形倾斜，进而使产品产生非预期的形变，其中在制造包装单元时，奶油夹心通常还是热的而且软的。
避免这个非预期楔形效果的一种可能是在生成横向密封接缝时，在膜网的输送方向上，在布置在膜管内的部分堆之间维持足够大的空间，使得生成横向密封接缝时产生的拉应力减小，由此作用在饼干上的径向应力也相应地变小。但是，各个包装单元的填充度的相应减小和膜网消耗的增加与此相关联，使得除生产设备的生产率降低之外，制造成本也会增加。
发明内容
因此，本发明基于提出一种用于在管状袋成型、填充和密封设备中制造包装单元的方法的任务，该方法在使得生产设备具有较高的生产率的同时允许对产品轻柔的包装。
这个任务由具有权利要求1的特征的方法完成。
在根据本发明的方法中，当密封装置为了密封目的而接触膜管时，横向密封装置在与膜管的运动方向相反的方向上进行相对于膜管的竖直运动。
由于横向密封装置为了密封目的而接触膜管的事实，在与膜管的运动方向相反的方向上发生的竖直相对运动的叠加导致膜管的积聚，所述积聚位于横向密封接缝和布置在横向密封接缝上方的部分堆之间的区域内。所述积聚致使膜管在相应的包装单元的下端区域内保持大体无拉应力状态，并形成松弛袋结点(bag gusset)。
因此，可以保证的是，通过在横向密封接缝区域内形成密封，在膜管内不会产生可引起作用在部分堆的下端上的非预期横向力的拉应力。
因此，甚至可能包装易变形的饼干，该饼干尤其是指具有奶油夹心的三明治饼干，无需在包装之前通过冷却在中间的饼干以确定奶油夹心足够稳定，就可以在烘焙过程之后立即对其进行包装。
由于膜管优选地在横向密封接缝形成的同时在横向密封接缝区域内被切断，所以，可以避免由于积聚在布置于横向密封装置下方的包装单元的上包装端的区域内产生增大的拉应力。
证明特别有利的是，横向密封装置的相对运动通过横向密封装置的竖直运动的延迟实现，因为通过移送装置可在管状袋成型、填充和密封设备内连续地且以恒定速度输送膜网，由此所需的相对运动可通过对横向密封装置的相应运动学控制单独地实现。
如果在用于密封目的的接触的最终阶段，横向密封装置的竖直运动的延迟在相互倚靠的膜网部分之间的至少部分材料连接之后实现，通过用于密封目的的接触，可向膜管中实现足够高的热传递进而利用膜管的小塑性变形以支持包装单元的松弛袋结点的形成。
为了防止在膜管的输送方向上在部分堆上施加由横向密封装置的竖直相对运动引起的作用力，有利的是，横向密封装置的相对运动所覆盖的运动距离s小于横向密封装置和布置在横向密封装置上方的部分堆之间的间隔a。
附图说明
接下来，在附图的帮助下对本发明优选的实施例进行说明。
在图中：
图1：示出了处于接触膜管以用于密封目的的开始阶段的横向密封装置；
图2：示出了图1所示的处于接触膜管以用于密封目的的最终阶段的横向密封装置。
具体实施方式
图1示出了在管状袋成型、填充和密封设备中形成的膜管12的下端，膜管12用于包裹在部分堆10中一个位于另一个上方的盘状产品11。通过移送装置(未在图1中更详细示出)，膜管12在竖直输送方向13上被输送到横向密封装置14，横向密封装置14包括由运动传动装置(未详细示出)驱动的两个密封工具15、16，从而在两个密封工具15、16接触膜管以用于密封目的时，两个密封工具15、16通过密封表面17抵靠在设置在密封工具15、16之间的膜管12上，其中所述接触如图1所示。
在图1所示的密封阶段之外，密封工具15、16处于图1中点划线所示的入口位置，在该位置密封工具15、16分开，从而在其中容纳产品11的膜管12能够通过横向密封装置14的密封工具15、16。
密封工具15、16的运动驱动形成为：当密封工具15、16接触膜网以用于密封目的时，处于图1中所示密封位置的密封工具15、16通过驱动装置(未更详细示出)在膜管12的输送方向13上运动。然后，为了在随后用于生成横向密封接缝18的密封过程中密封工具15、16被再次转移到图1所示的密封位置，密封工具15、16向后移动到入口位置，并在与膜管12的输送方向13相反的方向上沿在用于密封目的的接触期间在输送方向13上实现的运动路径移动。
在密封位置，通过集成到横向密封装置中的切割装置19，在横向密封接缝18的区域内对膜管12进行切割，以便在其长度上由两个相邻的横向密封接缝18限定的包装单元20被从膜管12上切下。
例如，图1中所示产品11为像三明治一样的饼干，其可在周围饼干21和22之间容纳奶油夹心23。在制造包装单元20时，在烘焙过程之后立即被进给到管状袋成型、填充和密封设备中的产品11的奶油夹心23还是相对柔软的，从而作用在三明治饼干21、22上的径向应力很容易导致产品变形或奶油夹心23渗出产品11。
在图1的帮助下可以理解的是，由于密封过程，在横向密封接缝18和产品11的部分堆10之间形成的袋结点24区域内的膜管12中产生拉应力，该拉应力导致作用在与横向密封接缝18相对的产品边缘区域25上的径向应力F，当达到临界大小并且如果奶油夹心23还是柔软的，所述径向应力可使三明治饼干21、22产生相对于彼此的楔形倾斜，因此可导致相应的产品变形。
如图2所示，在用于密封目的的接触的最终阶段，在相互抵靠的膜网部分28、29的至少部分材料连接之后，横向密封装置14的密封工具15、16进行相对运动，以形成横向密封接缝18，该相对运动具有运动路径s，以在与膜管12的输送方向13相反的方向上，相对于膜管12从图2中点划线所示的用于密封目的的接触的开始阶段移动密封工具15、16。
在这种情况下，该相对运动由与膜管在相同的方向上运动的横向密封装置14的延迟(或减速)实现。
从图2中变得清楚的是，可防止袋结点24中拉应力的形成以及达到临界大小的径向应力F的形成，因为由于横向密封装置14的相对运动，实现了袋结点24的松弛形式。
从图2中进一步可以看出的是，横向密封装置14的相对运动所覆盖的运动距离s小于横向密封装置14和布置在横向密封装置14上方的部分堆10之间的间隔a。
为了支撑在横向密封接缝18处以确定的方式形成的袋结点24，在所示示例性实施例的情况下，在每种情况下，横向密封装置14的上方和下方分别设有折叠推杆27、28，该折叠推杆27、28可朝向膜管12枢转到与膜管12的输送方向13成一个角度，并且允许形成确定的结点折叠，以使在底部结点区域内彼此相对放置的膜网部分以复写簿的方式一个放置在另一个的上方，并且能够以相应地确定的方式形成横向密封接缝。

Claims (4)

1.一种用于在管状袋成型、填充和密封设备中制造包装单元(20)的方法，所述方法包括：竖直地输送盘状产品(11)，所述盘状产品(11)在部分堆(10)中一个位于另一个的上方，以及采用通过移送装置平行于所述产品输送的膜网对所述产品进行包裹，其中，为了形成膜管(12)，所述膜网通过纵向密封装置设有纵向密封接缝，所述膜网随后通过横向密封装置(14)在所述部分堆的上方和下方设有横向密封接缝(18)，所述横向密封装置(14)由独立于所述移送装置的驱动装置驱动，且在所述密封装置为了密封的目的而接触所述膜网时，所述横向密封装置(14)与所述膜网在相同的方向上运动，
其特征在于，在所述密封装置为了密封的目的而接触所述膜管时，所述横向密封装置在与所述膜管的输送方向相反的方向上相对于所述膜管进行竖直运动。
2.根据权利要求1所述的方法，其特征在于，所述横向密封装置(14)的所述相对运动通过所述横向密封装置的所述竖直运动的延迟实现。
3.根据权利要求2所述的方法，其特征在于，在所述为了密封目的的接触的最终阶段，所述横向密封装置(14)的所述相对运动的所述延迟在相互倚靠的膜网部分(28、29)的至少部分材料连接之后实现。
4.根据前述权利要求中任一项所述的方法，其特征在于，所述横向密封装置(14)的所述相对运动所覆盖的运动距离s小于所述横向密封装置和布置在所述横向密封装置上方的所述产品(11)的所述部分堆(10)之间的间隔a。
CN201380053875.1A 2012-10-16 2013-07-16 用于在管状袋制造设备中制造包装单元的方法 Pending CN104812673A (zh)

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