CN114104426A - 用于制造容纳在包装中的袋的设备 - Google Patents

用于制造容纳在包装中的袋的设备 Download PDF

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Publication number
CN114104426A
CN114104426A CN202111005431.3A CN202111005431A CN114104426A CN 114104426 A CN114104426 A CN 114104426A CN 202111005431 A CN202111005431 A CN 202111005431A CN 114104426 A CN114104426 A CN 114104426A
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CN
China
Prior art keywords
sealing
heating conductor
jaw
shaped recess
transverse
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Granted
Application number
CN202111005431.3A
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English (en)
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CN114104426B (zh
Inventor
托马斯·莱德夫斯基
克里斯托夫·霍伦贝克
安德里亚斯·赫夫勒
斯蒂芬·兰贝茨
汉斯·克诺普斯
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Teepack Packaging Equipment Co ltd
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Teepack Packaging Equipment Co ltd
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Publication of CN114104426A publication Critical patent/CN114104426A/zh
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Publication of CN114104426B publication Critical patent/CN114104426B/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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • 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
    • B29C65/7879—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 said parts to be joined moving in a closed path, e.g. a rectangular path
    • B29C65/7882—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 said parts to be joined moving in a closed path, e.g. a rectangular path said parts to be joined moving in a circular path
    • 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
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    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being non-straight, e.g. forming non-closed contours
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial joints
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/347—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients
    • B29C66/3472—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients in the plane of the joint, e.g. along the joint line in the plane of the joint or perpendicular to the joint line in the plane of the joint
    • 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
    • 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
    • B29C66/81433—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 being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—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 being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
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    • B29C66/822—Transmission mechanisms
    • B29C66/8226—Cam mechanisms; Wedges; Eccentric mechanisms
    • B29C66/82265—Eccentric mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • B29C66/83241—Joining or pressing tools pivoting around one axis cooperating pivoting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/91231—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
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    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
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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
    • B65B2220/00—Specific aspects of the packaging operation
    • B65B2220/16—Packaging contents into primary and secondary packaging
    • B65B2220/20—Packaging contents into primary and secondary packaging the primary packaging being bags, the secondary packaging being further bags, the primary bags being either finished or formed concurrently with the secondary bags

Abstract

本发明涉及一种用于制造容纳在包装中的袋的设备，所述袋(42)包含可冲泡材料，该设备包括适于制造包含可冲泡材料的袋(42)的袋制造设备(2)和密封站台(100)，所述密封站台具有形成相对的密封表面的爪元件(200)，所述相对的密封表面从相对侧作用在包装(150)上，用于密封所述袋(42)。根据本发明的设备允许更经济地生产封装单元，该封装单元包括包装中的袋，并且该设备具有沟槽形凹部(220)，在该沟槽形凹部中容纳有螺旋铺设的加热导体(208)。

Description

用于制造容纳在包装中的袋的设备
技术领域
本发明涉及一种用于制造封装单元的设备，该封装单元包括包含可冲泡材料的袋，该袋设置在典型的不透香气的包装中。
背景技术
从EP2231479B1中已知一种具有来自前序的特征的相应设备。在这种先前已知的设备中，首先将袋放置在包装材料的相对支腿之间的包装站台中，该包装材料作为扁平网片供应。将袋放置在网片上，将该网片围绕袋折叠并从供应的包装材料上切断，使得一片预制长度的包装材料将袋容纳在其中。通过折叠包装材料，已经形成袋的包装的边缘。然而，需要形成U形的密封接缝，使得包装围绕袋周向地闭合，并且可以在袋内形成可冲泡材料的不透香气的封装。
这种可冲泡材料通常是茶叶或者干粉或叶子的其他不溶性材料，其质量和味道可能会受到环境作用的影响，因而先前提及的不透香气的封装可能是必要的。这也适用于本发明。
在上述现有技术中，U形密封接缝由密封设备形成，该密封设备在圆盘传送带的外周表面上具有多个密封单元，每个密封单元具有可朝向彼此枢转的密封爪，所述密封爪接收包装以及袋，并且在圆盘传送带的逐步旋转运动的过程中闭合，以便在圆盘传送带的旋转运动期间通过焊接来密封包装的U形边缘，并将这样闭合的包装输送到另一个站台。
该实施例基于这样的考虑，即相对于先前已知设备的其他站台，通过形成焊接接缝来密封包装中的袋在密封站台中需要比先前站台中更长的停留时间。因此，密封站台中的各个工作步骤可以通过旋转圆盘传送带来及时划分，而不会中断或干扰整个设备的循环时间。
为了包装的有效密封，特别是通过焊接，有必要使包装及其边缘处于密封爪之间，将密封爪抵靠包装放置，向包装中引入充足的热量，以便使其熔化，这样包装的互相邻接的网片熔化并焊接在一起。由于施加的热量和必要的冷却时间，这种密封不能立即稳定，使得由袋和包装构成的封装单元通常只能在已经观察到一定的冷却时间之后才能进一步处理。
因为用于制造封装单元的设备是用于大量生产消耗品的设备，所以重要的是具有封装单元的快速循环时间和经济生产。
发明内容
本发明旨在提供一种上述类型的设备，该设备允许更快速并且因此更经济地制造包装在不透香气的包装中的袋。
为了解决这个问题，本发明提供了一种具有权利要求1所述的特征的设备。
在根据本发明的解决方案中，爪元件在密封表面下方具有沟槽形凹部。沟槽形凹部的底部由爪元件的形成密封表面的表面部段形成。与此相对，沟槽通常是开放的。在任何情况下，沟槽形凹部容纳螺旋铺设的加热导体。
在这方面，根据本发明的提议方案不同于先前已知的现有技术。如今，上述类型的密封站台的爪元件具有平行于密封表面延伸并且容纳圆柱形加热筒的孔。该加热筒与导热膏体一起插入孔中。先前已知的解决方案对于密封表面上的期望的热量均匀性是不利的。由于该系统，加热筒的热量输出受到限制，使得热量输出不总是足以在焊接期间快速加热包装。
在根据本发明的解决方案中，加热导体螺旋地铺设在沟槽中。加热导体包括沿着轴线一个接一个布置的多个螺旋铺设的环段。在这种情况下，如下形状是优选的，其中各环段具有相同的直径，使得沟槽可以被构造成具有均匀的高度。优选地，在沟槽中仅提供一个单个加热导体，该单个加热导体将整个热量输出引入到相应的爪元件中。
应该注意的是，爪元件通常是U形的，以形成先前提及的U形焊接接缝。根据本发明的特定特征，爪元件和沟槽形容器优选为具有纵向支腿和横向支腿的L形。爪元件优选地也形成为L形。加热导体具有纵向螺旋和与所述纵向螺旋成直角延伸的横向螺旋。这两个螺旋直接合并(merge)到彼此中。加热导体的这种L形构造是通过螺旋的适当铺设和加热导体的弯曲来实现的。在这种情况下，如下形状是优选的，其中加热导体仅弯曲而不扭结。加热导体的变形半径通常不小于各个螺旋的半径。纵向螺旋通常覆盖横向螺旋。作为纵向螺旋的纵向轴线或横向螺旋的纵向轴线的延伸，还存在相应的其他螺旋的长度部段。因此，充足的热量被引入到L形爪元件的拐角区域中，以熔化包装。这同样适用于在U形爪元件的情况下螺旋铺设的加热导体的布置。
根据本发明的优选进一步发展，两个螺旋在沟槽形凹部中彼此相邻布置。这些螺旋通常是横向螺旋，即在L形爪元件的情况下，插入到在爪元件的横向支腿中凹入的沟槽部段中的那些螺旋。在U形凹部的情况下，彼此相邻布置的两个螺旋容纳在中心基座中，该中心基座将爪元件的两个纵向支腿相互连接并将它们相互隔开。本发明显然不限于形成为L形的爪元件。在这种爪元件中，两个爪元件设置在密封平面的相对侧上，这两个爪元件可以相对于彼此枢转，以便不仅通过枢转运动而打开密封爪，而且另外在纵向支腿之间形成更多的空间，用于移除不透香气的包装单元或者用于在密封之前将包装插入到密封平面中以及爪元件之间。在U形爪元件中，密封平面的每一侧上设有一个爪元件。爪元件通常只能围绕相互平行延伸的一个或多个轴线枢转。
根据本发明的另一优选构造，至少两个热电偶被引入到沟槽形凹部中。优选地，为每个爪元件和/或每个单独的加热导体提供两个热电偶。其中一个热电偶通常被分配给密封表面并且检测其实际温度，用于控制加热功率。另一个热电偶也可以以相同的方式提供。因此，冗余度增加，并且即使其中一个热电偶发生故障，爪元件也可以继续用于控制加热导体。然而，优选地，另一个热电偶被分配给加热导体并且检测其实际温度。作为超温热电偶，它检测加热导体的可能过热，并且以数据方式连接到分配给加热导体的控制系统，使得在过热的情况下，加热导体的通电被暂停，优选地输出错误消息，并且中断操作。
在这种情况下，可以调整控制系统，使得在其中一个热电偶发生故障的情况下，另一个热电偶可以用于控制加热导体。
根据优选的进一步发展，加热导体与爪元件之间的热传递得到改善。为此，爪元件优选由带有良好导热性的金属材料构成，特别是带有良好导热性的钢。例如，这种钢是铬镍钢。形成爪元件的金属材料应该具有至少21W/mK的导热率系数。沟槽形凹部由这种固体材料通过铣削制成。凹部的底部形成为匹配螺旋铺设的加热导体的曲率。在以这种方式形成的爪元件的凹形沟槽中，加热导体的各个螺旋与爪元件的表面直接导热接触，包角至少为160°，优选为180°。这在加热导体与密封表面之间提供了短的导热路径。凹形沟槽与密封表面之间的最小距离优选不超过9mm。在螺旋铺设的加热导体插入到沟槽形凹部中之后，用导热化合物填充该凹部。这优选是以熔融形式被引入到沟槽形凹部中以填充任何剩余自由空间的焊料化合物。
根据本发明的优选进一步发展，加热导体由同轴护套加热导体形成。在这种护套加热导体中，加热导体的主要长度由薄壁的、通常是金属的管构成，该管中填充有电绝缘材料，该电绝缘材料包围位于管内部的电阻加热导体。绝缘陶瓷可以是例如氧化镁或氧化铝。在管的每一端处，电绝缘套管插入到管中，其导热系数通常低于绝缘陶瓷的导热系数。因此，加热导体的对应端部相对较冷。这些端部从沟槽形凹部突出，并且优选地设有插头连接的接触元件，用于将电源电流引入到加热导体中。
附图说明
从以下结合附图对实施例的描述中，本发明的进一步的细节和优点将变得显而易见。其中：
图1示出了用于制造包装袋的设备的实施例的基本部分的侧视图；
图2示出了图1中所示的袋制造设备在袋和薄膜被推出时的放大视图；
图3示出了根据图1的实施例的密封站台的透视俯视图，其中密封爪打开；
图4示出了爪元件的实施例的下侧的俯视透视图；
图5示出了根据图4的沿着线V-V的横截面视图；
图6示出了根据图4的沿着线VI-VI的横截面视图；以及
图7示出了由袋和薄膜构成的封装单元的俯视图。
具体实施方式
图1中所示的实施例具有由参考标记2标识的袋制造设备和由参考标记100标识的密封站台。
袋制造设备2包括圆盘传送带，该圆盘传送带具有围绕轴线旋转的用于容纳透水包装的若干容器4，该包装形成为构成包含可冲泡材料的袋，并且通常连接到线和标签。关于各个站台及其构造，可以参考现有技术，例如EP 2231479B1或WO01/62600A1。图1中的参考标记I至IV标识了容器4可以位于其中的各个位置，以便接收和处理成品袋或待成品袋的各个部件。为了清楚表示起见，在该过程中起作用的元件未示出。在位置VI中，袋被完成。
图1和图2示出了由参考标记10标识的袋处理设备和由参考标记20标识的包装材料处理设备的元件。所示实施例的包装材料是不透香气的薄膜。因此，在下面的描述中，将参考薄膜处理设备20。袋处理设备10包括两个近似平行延伸的臂12、13，它们相互铰接地连接并且经由联接杆14联接到公共驱动设备30。该公共驱动设备30具有不同的凸轮盘32，所述凸轮盘不可旋转地固定在驱动设备30的公共驱动轴33上，并且联接到拾取器34，凸轮盘32的外周表面在每种情况下都在拾取器中滚动，其中拾取器34各自枢转地安装在公共支承轴线36上并且设有杠杆37，该杠杆铰接地连接到相关联的联接杆14。联接杆14经由杠杆作用在臂12、13上。
驱动设备30致动袋处理设备10的各个部件和薄膜处理设备20的部件。因此，处理设备10、20两者设有公共的驱动器，并且被强制地同步。
从图2中可以看出，图1中示意性示出的薄膜40和袋42一起被推出袋制造设备2并且被推向运送轮50，其中通过折叠薄膜40的材料形成的且在薄膜40的两个支腿44之间形成的折叠部45在前行进，并且袋42在后行进。薄膜处理设备20接合薄膜40的边缘。通过使夹紧靴15与夹紧弹簧16一起以及与前后袋处理臂12、13的前端一起移动径向远离袋制造设备2，通过用夹紧弹簧16致动夹紧靴15而从后面推出袋42。在该运动结束时，袋42被放置在包装薄膜40中，并且被夹紧在运送轮50的夹紧臂52之间。
密封站台100具有由参考标记102和108标识的密封爪，其中在图3的底部处示出的密封爪102由第一密封爪元件104和第二密封爪元件106形成。类似地，在其上示出的上密封爪108由两个爪元件形成，这两个爪元件在下文中称为对立爪元件110和112。特别地如图3中所示，每个密封爪元件104、106在俯视图中为L形，并且具有纵向支腿204和与之成直角延伸的横向支腿206。纵向支腿204各自形成纵向密封部，相对的支腿44通过该纵向密封部在其纵向侧处联结。两个横向支腿206一起形成每个密封爪102、108的密封表面，该密封表面适于形成横向密封部并且在薄膜40上产生该横向密封部，以便密封薄膜材料的与折叠部45相对的横向侧。纵向密封部和横向密封部允许薄膜封装的内部被不透气地密封。第四侧由折叠部45密封。每个爪元件104、106、110、112形成凸起的L形密封表面113、114。
密封爪元件104和对立爪元件110由伺服电机形式的公共驱动器115驱动。为此，连杆偏心地设置在驱动器115的驱动轴116上，其中邻近驱动器115设置的连杆与对立爪元件110相关联，并且因此在下文中称为对立爪连杆118，而设置在对立爪连杆118的与驱动器115相对的一侧上的另一个连杆被称为并且标识为密封爪连杆120。密封爪连杆120与密封爪元件104相关联。
该密封爪连杆120可自由旋转并且偏心地安装在驱动轴116上。密封爪连杆120的另一端在由参考标记122标识的枢转点处铰接地附接到密封爪枢转臂124，该密封爪枢转臂在一端处承载密封爪元件104，并且在其另一端处围绕枢转轴126(在下文中标识为密封爪枢转轴)枢转地安装，该枢转轴连接到独立的驱动器(未示出)。
以相应的方式，对立爪连杆118枢转地连接到对立爪枢转臂128，该对立爪枢转臂支撑对立爪元件110并且在其相对端处枢转地安装在对立爪枢转轴130上。
从前述的描述中显而易见的是，为第一和第二对爪元件104、110；106、112中的每一对提供肘节杆，其中除了爪元件104之外，肘节杆还包括密封爪连杆120，并且除了对立爪元件110之外，肘节杆还包括对立爪连杆118。在这种情况下，两个连杆118、120围绕公共驱动轴116可旋转地安装并且由该公共驱动轴支撑。它们偏心地安装到该驱动轴116上。然而，偏心是在角度上彼此偏移。在相关联的驱动器115的旋转运动期间，所述肘节杆迫使爪元件104或对立爪元件110上的枢转运动，在其框架内，L形的爪元件104、106或对立爪元件110、112相互靠近，以形成由两个L形密封表面113、114形成的U形密封表面，并且将薄膜40夹紧在它们之间，以形成U形焊接接缝。
图4示出了与根据图3的爪元件104相对应的尚未填充(占用)的爪元件200的透视俯视图，该爪元件具有沟槽形凹部202，该爪元件是L形的并且形成纵向支腿204和横向支腿206。因此，获得了沟槽形凹部202的L形基本形状。
参考标记208标识加热导体，该加热导体被构造为同轴护套加热导体，并且螺旋地插入到沟槽形凹部202中。在纵向支腿204的区域中，仅布置了一个螺旋，该螺旋基本上在纵向支腿204的整个长度上延伸，其中从该纵向螺旋210的自由端突出的加热导体208的端部经由沿直线延伸的导体部段212被引回到L形爪元件200的拐角区域中，并且在那里被引出以形成第一连接元件214。与此直接相邻的是第二连接元件216，该第二连接元件由加热导体208的另一端部形成，并且最初合并到第一横向螺旋220中，该第一横向螺旋被铺设直到横向支腿206的自由内端，并且在那里合并到第二横向螺旋222中，该第二横向螺旋被引导到爪元件200的拐角区域。在那里，纵向螺旋210的中心纵向轴线与第二横向螺旋220的匝相交。第二横向螺旋220以其最后一匝延伸大致直到纵向螺旋210的外周表面。换句话说，最后一匝位于以直线延伸的导体部段212旁边。因此，第二横向螺旋220的最后一匝延伸直到在其外侧上限定沟槽形凹部202的内表面，内侧指向横向支腿206。
在拐角区域附近并且直接与两个连接元件214、216相邻，设置有两个热电偶224、226，其中由参考标记224标识的热电偶延伸到沟槽形凹部202的底部，以便确定密封表面113处的实际温度，并且另一个热电偶226布置在两个横向螺旋220、222之间，并且在两个横向螺旋的高度处终止。该第二热电偶226用于检查加热导体208的实际温度。
热电偶224、226和两个连接元件214、216各自穿过陶瓷套管228，在螺旋铺设的加热导体208已经插入之后，所述陶瓷套管被焊料化合物包围并且实质性地结合到焊料化合物，该焊料化合物以熔融形式填充到沟槽形凹部202中，以改善加热导体208与爪元件200之间的热传导。
图5和图6示出了沟槽形凹部202的底部的构造。在那里，底部形成为沟槽形凹陷230，该沟槽形凹陷的凹形曲率适合加热导体208的螺旋的半径。纵向支腿204具有单个相应的凹陷230。横向支腿206具有两个这样的凹陷，用于分别接收横向螺旋220、222中的一个。
图7示出了以上述方式制造的封装(由参考标记150标识的包装构成)，该封装作为周向包装容纳以点示出的其中带有线和标签的袋42，并且以不透香气的方式将其封闭。包装150具有由折叠部45闭合的第一宽侧。纵向密封部L以直角从该折叠部45延伸。在这些纵向密封部L的端部处是平行于折叠部45延伸的横向密封部Q。纵向密封部L和横向密封部Q相互合并或穿透。
参考标记列表
2 袋制造设备
4 容器
10 袋处理设备
12 前袋处理臂
13 后袋处理臂
14 联接杆
15 夹紧靴
16 夹紧弹簧
20 薄膜处理设备
30 驱动设备
32 凸轮盘
33 驱动轴
34 拾取器
36 支承轴线
37 杠杆
40 薄膜
42 袋
44 支腿
45 折叠部
50 运送轮
52 夹紧臂
100 密封站台
102 下密封爪
104 爪元件
106 爪元件
108 上密封爪
110 对立爪元件
112 对立爪元件
113 L形密封表面
114 L形密封表面
115 驱动器
116 驱动轴
118 对立爪连杆
120 密封爪连杆
122 枢转点
124 密封爪枢转臂
126 密封爪枢转轴
128 对立爪枢转臂
130 对立爪枢转轴
150 包装
200 爪元件
202 凹部
204 纵向支腿
206 横向支腿
208 加热导体
210 纵向螺旋
212 以直线延伸的导体部段
214 第一连接元件
216 第二连接元件
220 第一横向螺旋
222 第二横向螺旋
224 热电偶
226 热电偶
228 陶瓷套管
230 凹陷
L 纵向密封部
Q 横向密封部
I-IV 容器4的位置

Claims (8)

1.一种用于制造容纳在包装(150)中的包含可冲泡材料的袋(42)的设备，包括适于制造包含可冲泡材料的袋(42)的袋制造设备(2)和密封站台(100)，所述密封站台具有形成相对的密封表面的爪元件(200)，所述密封表面从相对侧作用在包装(150)上，用于密封所述袋(42)，
其特征在于，
所述爪元件(200)中的至少一个在所述密封表面(113)下方形成沟槽形凹部(202)，所述沟槽形凹部中容纳有螺旋铺设的加热导体(208)。
2.根据权利要求1所述的设备，其特征在于，所述爪元件(200)和所述沟槽形凹部(202)为具有纵向支腿(204)和横向支腿(206)的L形，并且所述加热导体(208)形成纵向螺旋(210)和横向螺旋(220、222)，所述纵向螺旋和横向螺旋彼此成直角布置并且彼此直接毗邻。
3.根据权利要求1所述的设备，其特征在于，两个横向螺旋(220、222)彼此相邻地布置在所述沟槽形凹部(202)中。
4.根据权利要求1所述的设备，其特征在于，至少两个热电偶(226)被引入到所述沟槽形凹部(202)中。
5.根据权利要求1所述的设备，其特征在于，所述沟槽形凹部(202)用焊料化合物浇注。
6.根据权利要求1所述的设备，其特征在于，所述沟槽形凹部(202)的底部具有凹形凹陷(230)，所述凹形凹陷被形成为匹配螺旋铺设的加热导体(208)的曲率。
7.根据权利要求1所述的设备，其特征在于，所述爪元件(200)由具有良好导热性的钢制成。
8.根据权利要求1所述的设备，其特征在于，所述加热导体(208)由同轴护套加热导体形成。
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