CN208134777U - 用于包装材料的感应焊接的电感器 - Google Patents

用于包装材料的感应焊接的电感器 Download PDF

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CN208134777U
CN208134777U CN201820255615.2U CN201820255615U CN208134777U CN 208134777 U CN208134777 U CN 208134777U CN 201820255615 U CN201820255615 U CN 201820255615U CN 208134777 U CN208134777 U CN 208134777U
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weld
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卢西亚诺·阿米德
朱利奥·卡西尼
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Tetra Laval Holdings and Finance SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
    • B65B51/227—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding by induction welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
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    • 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
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
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    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
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    • 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
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    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
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    • 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
    • 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
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    • 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
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    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/02—Aluminium

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • General Induction Heating (AREA)
  • Closing Of Containers (AREA)

Abstract

本实用新型涉及用于包装材料的感应焊接的电感器。公开了一种用于感应焊接具有至少一层金属箔的包装材料的电感器。所述电感器包括：焊接表面，所述焊接表面被配置为与包装材料相对地布置以对其进行加热；以及至少一个间隔元件，所述至少一个间隔元件被设置为当包装材料被布置为与焊接表面相对时沿第一方向从焊接表面朝向包装材料突出，于是至少一个间隔元件将包装材料与焊接表面分开偏移距离。

Description

用于包装材料的感应焊接的电感器
技术领域
本实用新型一般涉及感应加热领域。更具体地，本实用新型涉及用于焊接用于密封容器的包装材料的电感器、密封机器和相关方法。
背景技术
包装工业采用感应加热的方式进行层压包装材料的焊接。这种层压材料的一个例子是沿着层压材料的内表面和外表面的纸载体层、铝箔和热塑性涂层。感应焊接技术是基于这样的事实，即导体周围的由交流电流产生的磁场能够在邻接的导电材料中感应出电流，这取决于材料的电阻，使材料变暖。因此，在对包含铝箔的层压材料设置的电感器环路或线圈进行感应焊接时，将层压材料与要接合的材料压制在一起。通过适当选择的电流和处理时间加热铝箔。材料被加热到足够高的温度以密封邻接的热塑性塑料层，导致组合的热塑性塑料层熔合在一起，由此产生密封和耐用的密封。
在这种密封工艺中经常遇到的问题是电感器的污染。这是由于包装材料化合物(例如，聚乙烯残留物)堆积在电感器的有源焊接表面上。通常将电感器压在包装材料上，以防止在电感器和包装材料中的金属箔之间形成的感应电路的电参数的波动。例如，感应电路的阻抗的波动否则会影响对密封工艺的控制，导致由于超过阻抗阈值而导致次最佳封装密封或工艺中断。化学残留物的积累也需要频繁地清洁电感器，这又增加了电感器的磨损，并且降低了使用寿命。
因此，改进的电感器将是有利的，并且特别地允许避免更多的上述问题和折衷，包括避免化学残留物的累积并使得能够增加电感器的寿命。用于密封包装材料的相关密封机器和包装材料的焊接方法也是有利的。
实用新型内容
因此，本实用新型的示例优选寻求单独地或以任何组合通过提供根据所附专利权利要求的装置来缓和、减轻或消除本领域中诸如上述的一个或多个缺陷、缺点或问题。
根据第一方面，提供了一种用于具有至少一个金属箔层的包装材料的感应焊接的电感器。所述电感器包括：焊接表面，所述焊接表面被配置为与包装材料相对地布置以对其进行加热；以及至少一个间隔元件，所述至少一个间隔元件被设置为当包装材料被布置为与焊接表面相对时沿第一方向从焊接表面朝向包装材料突出，于是至少一个间隔元件将包装材料与焊接表面分开偏移距离。
根据第二方面，提供了一种用于密封包装材料的密封机器，其包括根据第一方面的电感器，其中所述包装材料被传送以布置成与所述电感器的焊接表面相对，并且至少一个间隔元件被布置成沿第一方向从焊接表面朝向包装材料突出，于是当所述包装材料在密封机器中被传送时所述至少一个间隔元件将所述包装材料与所述焊接表面分开偏移距离。
根据第三方面，提供了一种利用电感器焊接具有至少一个金属箔层的包装材料的方法。所述电感器具有焊接表面，该焊接表面被构造成与包装材料相对地布置以对其进行加热。该方法包括：通过在被布置成从所述焊接表面突出的至少一个间隔元件上方移动所述包装材料，在距离所述焊接表面偏移距离处在所述焊接表面上方传送所述包装材料。
在从属权利要求中限定了本实用新型的其他示例，其中本公开的第二和第三方面的特征与第一方面相比在细节上作必要的修改。
本公开的一些示例提供了用于感应焊接包装材料的电感器，所述电感器对包装材料残留物的污染较不敏感。
本公开的一些示例使得用于感应焊接包装材料的电感器具有增加的使用寿命。
本公开的一些示例使得用于感应焊接包装材料的电感器需要较少的维护。
本公开的一些示例提供了允许提高感应加热电路的电参数的稳定性的电感器。
本公开的一些示例提供了允许改进对密封工艺的控制的电感器加热电路。
本公开的一些示例提供了包装材料容器的更可靠的密封。
本公开的一些示例提供了感应密封生产线中增加的生产量。
具体而言，本实用新型的一些方面可以阐述如下：
1.一种用于感应焊接具有至少一个金属箔层的包装材料(101)的电感器(100)，所述电感器包括：
焊接表面(102)，其被配置成与所述包装材料相对地布置以对其进行加热，
至少一个间隔元件(103,103’,103”,103”’)，所述至少一个间隔元件被设置为当所述包装材料被布置为与所述焊接表面相对时沿第一方向(104)从所述焊接表面朝向所述包装材料突出，于是所述至少一个间隔元件将所述包装材料与所述焊接表面分开偏移距离(105)。
2.根据条款1所述的电感器，其中，所述至少一个间隔元件包括至少一个辊(103,103’,103”,103”’)，所述至少一个辊(103,103’,103”,103”’)枢转地固定到所述电感器并且并能围绕旋转轴线(106)旋转，由此所述至少一个辊被配置为在所述偏移距离处横跨所述焊接表面传送所述包装材料。
3.根据条款2所述的电感器，其中，所述焊接表面具有沿进给方向(107)的细长延伸部，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向被传送，并且其中所述旋转轴线平行于所述焊接表面并且垂直于所述进给方向延伸。
4.根据条款2或3所述的电感器，其中，所述至少一个辊布置在所述焊接表面中的对应的凹部(108,108’,108”,108”’)中。
5.根据条款2至4中任一项所述的电感器，其包括至少一个支撑件(110)，所述至少一个辊枢转地固定在所述支撑件中，其中所述至少一个支撑件能够相对于所述焊接表面移动，使得枢转地固定到所述支撑件的所述辊在垂直于所述焊接表面和所述旋转轴线的所述第一方向上具有可变的位置。
6.根据条款2至5中任一项所述的电感器，其中，所述至少一个辊包括被弹性材料(111)覆盖的圆柱形表面。
7.根据条款1至6中任一项所述的电感器，其包括多个间隔元件(103,103’,103”,103”’)，所述多个间隔元件彼此分开设定分隔距离(109)，所述设定分隔距离(109)被限定为使得所述包装材料在沿所述进给方向被传送时沿着所述分隔距离与所述焊接表面保持分离。
8.根据条款7所述的电感器，其中，所述多个间隔元件包括多个辊(103,103’,103”,103”’)，每个辊布置在所述焊接表面中的相应的凹部(108,108’,108”,108”’)中。
9.根据条款1-8中任一项所述的电感器，其中所述至少一个间隔元件被布置为使得所述偏移距离沿进给方向(107)在所述焊接表面上方基本恒定，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向(107)被传送。
10.根据条款1至9中任一项所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
11.根据条款1至10中任一项所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
12.一种用于密封包装材料(101)的密封机器，所述密封机器包括根据条款1至11中任一项所述的电感器(100)，其中所述包装材料被传送以布置成与所述电感器的焊接表面(102)相对，并且至少一个间隔元件(103,103’,103”,103”’)被布置成沿第一方向(104)从所述焊接表面朝向所述包装材料突出，于是当所述包装材料在密封机器中被传送时所述至少一个间隔元件将所述包装材料与所述焊接表面分开偏移距离(105)。
应该强调的是，在本说明书中使用时，术语“包括/包含”被用来指定所陈述的特征、整体、步骤或部件的存在，但并不排除一个或多个其他特征、整体、步骤、部件或其组合的存在。
附图说明
本实用新型的实施例能够实施的这些和其他方面、特征和优点将从以下参考附图对本实用新型实施例的描述中变得清楚和阐明，其中：
图1示意性示出了根据一个示例的用于焊接包装材料的电感器；
图2示意性示出了根据一个示例的用于焊接包装材料的电感器；
图3示意性示出了根据一个示例的用于焊接包装材料的电感器的侧视图；
图4示意性示出了根据一个示例的用于包装材料的焊接的电感器的侧视图；以及
图5是焊接包装材料的方法的流程图。
具体实施方式
现在将参照附图描述本实用新型的具体示例。然而，本实用新型可以以许多不同的形式来体现，并且不应该被解释为限于在此阐述的示例；相反，提供这些示例是为了使本公开透彻和完整，并将本实用新型的范围充分地传达给本领域技术人员。在附图中示出的示例的详细描述中使用的术语不旨在限制本实用新型。在附图中，相同的数字表示相同的元件。
图1示意性地示出了用于感应焊接具有至少一个金属箔层的包装材料101的电感器100。电感器100包括焊接表面102，焊接表面102被配置为与包装材料101相对地布置以用于对其加热。至少一个间隔元件103,103’,103”,103”’布置成当包装材料101被布置为与焊接表面相对时沿第一方向104从焊接表面102朝向包装材料101突出。至少一个间隔元件103,103’,103”,103”’(以下简称103-103”’)由此将包装材料101与焊接表面102分开偏移距离105。通过具有从焊接表面102突出的至少一个间隔元件103-103”’，包装材料101被阻止接触焊接表面102，并且相反保持在距离焊接表面105偏移距离105处。因此可以防止在焊接表面102上形成来自包装材料101(例如，来自由于暴露于包装材料101的高温而形成的聚乙烯)的残留物。这有利地提供了增加的检修间隔，因为需要较少的电感器100的清洁。同时，从焊接表面102突出的至少一个间隔元件103-103”’使得能够获得感应电路的电气参数的稳定特性，因为包装材料101可以容易地抵靠至少一个间隔元件103-103”’布置，并由此保持在距焊接表面102的良好限定的偏移距离105处。具有这种限定的间隔使得最大限度地减少例如感应加热电路的阻抗的波动的风险，这提供了焊接工艺的优化控制。因此，包装容器的密封工艺可以更加可靠并且在更短的时间内完成，因为由于涉及该工艺的电特性的改进的稳定性，可以更精确地控制向电感器的功率输送。由于优化的功率控制和由于较少的电感器磨损，电感器100的使用寿命也可以延长，这是较少暴露于污染物的结果，并且部分地还因为较少的导致电感器100的整体磨损的清洁操作。因此，具有从焊接表面102突出的至少一个间隔元件103-103”’提供具有增加的寿命的更鲁棒的电感器以及改进的感应密封工艺的控制。至少一个间隔元件103-103”’从焊接表面102突出应当被解释为从电感器的焊接表面102所处的平面延伸。即转向例如图1中，间隔元件103在第一方向104上延伸或突出超过该平面(该平面在进给方向107上延伸)。在图1的示例中，清楚的是，间隔元件103可以不需要与焊接表面102邻接，但是不管怎样都应当被解释为从焊接表面102沿第一方向104朝包装材料101突出或延伸，如所讨论的。
如在例如图1中示意性示出的，至少一个间隔元件103-103”’可以包括至少一个辊103-103”’，至少一个辊103-103”’可枢转地固定到电感器100并且可以围绕旋转轴线106旋转，旋转轴线106进一步在图2中的电感器100的自顶向下的视图中示出。至少一个辊103-103”’被配置为在偏移距离105处跨越焊接表面102传送包装材料101。具有至少一个辊103-103”’提供了具有上述优点的偏移距离105，同时允许在包装材料101和焊接表面102之间施加最小的摩擦力的情况下跨越焊接表面102有效地传送包装材料101。至少一个辊103-103”’因此可以相对于焊接表面102自由旋转。但是也可以设想，至少一个间隔元件103-103”’可以包括在包装材料101和至少一个间隔元件103-103”’之间提供有效的滑动运动的静态的(即不旋转的)低摩擦材料。静态间隔元件103-103”’可以提供需要最少维护的电感器100，尽管至少一个辊103-103”’可以提供相对于包装材料提供最小摩擦力的优点101。静态间隔元件103-103”’可以包括具有低摩擦系数的材料，同时具有高度抗污染性和耐磨性。可以进一步想到的是，在电感器100的某些应用中，至少一个静态间隔元件103-103”’可以与至少一个可移动间隔元件103-103”’组合，以在维护、制造成本和可移动性之间提供平衡。可以进一步设想，可以提供其他可移动间隔元件103-103”’，例如可以相对于焊接表面102旋转的球形元件。
至少一个辊103-103”’可以在旋转轴线106的方向上延伸穿过焊接表面102的宽度112的至少一半。这可以进一步确保包装材料101被维持在距离焊接表面102偏移距离105处，并且包装材料101可以有效且可靠地在焊接表面102上方传送。
如例如在图1和图2中所示，焊接表面102可以具有在进给方向107上的细长延伸部，当包装材料101布置成与焊接表面102相对时，包装材料101在该进给方向107上被传送。旋转轴线106可以平行于焊接表面102延伸，即在焊接表面102的平面中且垂直于进给方向107。使旋转轴线106在焊接表面102的平面内延伸可以进一步保证包装材料101横跨焊接表面102保持在恒定的偏移距离105处。通过使旋转轴线106垂直于进给方向107延伸，包装材料101可以暴露于来自至少一个辊103-103”’的最小摩擦力。
至少一个辊103-103”’可以设置在焊接表面102中的对应的凹部108,108’,108”,108”’中，如例如在图1和3的侧视图或图4的透视图中所示。将至少一个辊103-103”’布置在凹部中允许选择辊103-103”’的优化的直径，以便提供辊103-103”’和包装材料101之间的相对运动的期望动力学(dynamics)，同时能够将偏移距离105设定为期望的值。
电感器100可以包括至少一个支撑件110，至少一个辊103-103”’枢转地固定在该支撑件110中，如图2中示意性地示出的那样。至少一个支撑件110可以可移动地固定到电感器100，并且因此可相对于焊接表面102移动，使得枢转地固定到支撑件110的对应辊103-103”’在垂直于焊接表面102和旋转轴线106的第一方向104上具有可变位置。因此，通过将支撑件110和相应的辊103-103”’在第一方向104上朝向包装材料101移动，可以容易地改变偏移距离105并将其设置为值的范围。在具有多个辊103-103”’的情况下，辊103-103”’中的每一个可以分别相对于彼此移动以优化包装材料101横跨焊接表面102的轨迹。还可以设想，在具有静态间隔元件103-103”’的情况下，如上所述，静态间隔元件103-103”’在第一方向104上的位置可以被单独地调整。
至少一个辊103-103”’可以包括由弹性材料(未示出)覆盖的圆柱形表面。这种弹性材料可以适应包装材料101在第一方向104上的轻微移动，从而平滑化当包装材料101在焊接表面102上方传送时在包装材料101中发生的可能的振动。这可以提供包装材料101相对于电感器100的轨迹的增加的稳定性，并且提供关于通过电感器100与包装材料101的金属箔的磁耦合建立的感应加热电路的电特性的进一步处理稳定性。
如图1-4所示，电感器100可以包括多个间隔元件103,103’,103”,103”’。间隔元件103-103”’的数量可以根据特定的应用来选择，该特定的应用可以关于例如电感器100的尺寸而规定不同的要求。图1-4示出了在这些示例中具有四个间隔元件103-103”’(即四个辊103-103”’)的示例，但是这些示例不应被视为限制性的，而仅仅是间隔元件103-103”’的数量的示例。因此，可以想象的是，间隔元件的数量可以比所提供的例子中的数量更多或者更少，这取决于例如电感器100在进给方向107上的长度。多个间隔元件103-103”’可以彼此分开设定分隔距离109，该设定分隔距离109被限定成使得当包装材料101沿进给方向107输送时，包装材料101沿分隔距离109保持与焊接表面102分离。因此，分隔距离109被选择为使得包装材料101在给定特定应用的情况下不抵靠间隔元件103-103”’之间的焊接表面102。例如，包装材料101在焊接表面102上沿进给方向107传送的速度可以在各种应用中不同，以及包装材料本身的性质也可能不同，这可能影响包装材料101在两个间隔元件103-103”’之间的弯曲量。分隔距离109因此可以变化以适应这些因素，并且防止包装材料101弯曲到使其延伸到接触焊接表面102的程度。还可以设想的是，间隔元件103-103”’可以在进给方向107能移动，即被配置为以不同的分隔距离109固定，以使得能够基本保持横跨焊接表面102的偏移距离105，同时具有使包装材料101上的摩擦最小化的分隔距离109。
多个间隔元件103-103”’可以包括多个辊103,103’,103”,103”’，每个辊都布置在焊接表面102中的相应的凹部108,108’,108”,108”’中，如在图1-4的示例中示意性地示出的。这样的配置可以提供具有改进的寿命和感应加热电路的稳定电特性的特别有利的电感器100。
所述至少一个间隔元件103-103”’可以被布置成使得偏移距离105在焊接表面102上方沿进给方向107基本恒定，当包装材料101与焊接表面102相对地布置时，包装材料101沿进给方向107传送。恒定的偏移距离105可以进一步使得能够实现感应加热电路的电参数的最佳稳定性和控制。
至少一个间隔元件103-103”’可以与焊接表面102热绝缘。热绝缘应该被解释为至少一个间隔元件103-103”’和焊接表面102之间的热耦合减少，从而使得它们之间传递的热能的量减少。至少一个间隔元件103-103”’可以通过在至少一个间隔元件103-103”’与焊接表面102之间布置绝热材料(即，比焊接表面102具有更低的传热系数的材料)而与焊接表面102热绝缘。替代地，至少一个间隔元件103-103”’可以与焊接表面102分离，如图1-4的示例所示的具有至少一个辊103-103”’的情况一样。至少一个辊103-103”’和焊接表面102之间的气隙可以变化以达到所需的绝热量，使得包装材料101在与至少一个辊103-103”’接触时不被过度地加热。由此可以防止在至少一个辊103-103”’上形成诸如聚乙烯之类的化合物残余物。
至少一个间隔元件103-103”’可以可移除地固定到电感器100。因此可以允许对电感器上的至少一个间隔元件103-103”’进行有效且便利的维护和优化。也可以设想，间隔元件103-103”’(例如，辊103-103”’)的数量可根据需要通过取决于具体应用移除辊103-103”’或将其附接到电感器100来改变。由此提供电感器100的高度可定制性，并且可以避免整个电感器100的替换。
提供了用于密封包装材料101的密封机器。密封机器包括如上关于图1-4所述的电感器100。在密封机器中，包装材料101被传送以布置成与电感器100的焊接表面102相对，并且至少一个间隔元件103,103’,103”,103”’被布置成在第一方向104上从焊接表面102朝向包装材料101突出，于是在包装材料101在密封机器中输送时，至少一个间隔元件103-103”’将包装材料101与焊接表面102分开偏移距离105。这因此提供了具有如上关于电感器100和图1-4所描述的优点的密封机器。
图5示出了利用电感器100焊接具有至少一个金属箔层的包装材料101的方法300的流程图。描述和示出方法300的步骤的顺序不应被解释为限制性的，并且可以想象的是，这些步骤可以以不同的顺序执行。电感器100具有焊接表面102，该焊接表面102被配置为与包装材料101相对设置以对其进行加热。方法300包括通过在布置成从焊接表面102突出的至少一个间隔元件103,103’,103”,103”’上方移动302包装材料101，在距离焊接表面102偏移距离105处在焊接表面102上方传送301包装材料101。因此，用电感器100焊接包装材料101的方法300具有如上关于电感器100和图1-4所述的相关优点。
至少一个间隔元件103-103”’可以包括多个辊103,103’,103”,103”’。方法300可以包括在焊接表面102上方在辊103–103”’上滚压303包装材料101以沿着进给方向107维持包装材料101和焊接表面102之间的偏移距离105，焊接表面102沿着进给方向107延伸并且包装材料101沿着进给方向107被传送。
以上参照具体示例描述了本实用新型。然而，除了上面描述的示例之外的其它示例在本实用新型的范围内同样是可能的。本实用新型的不同特征和步骤可以以不同于所描述的组合的其他组合的方式进行组合。本实用新型的范围仅由所附专利权利要求限制。
更一般地，本领域技术人员将容易理解，本文所描述的所有参数、尺寸、材料和配置都是示例性的，并且实际参数、尺寸、材料和/或配置将取决于特定的一个或多个应用，本实用新型的教导用于这些应用。

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1.一种用于感应焊接具有至少一个金属箔层的包装材料(101)的电感器(100)，所述电感器包括：
焊接表面(102)，其被配置成与所述包装材料相对地布置以对其进行加热，
至少一个间隔元件(103,103’,103”,103”’)，所述至少一个间隔元件被设置为当所述包装材料被布置为与所述焊接表面相对时沿第一方向(104)从所述焊接表面朝向所述包装材料突出，于是所述至少一个间隔元件将所述包装材料与所述焊接表面分开偏移距离(105)。
2.根据权利要求1所述的电感器，其中，所述至少一个间隔元件包括至少一个辊(103,103’,103”,103”’)，所述至少一个辊(103,103’,103”,103”’)枢转地固定到所述电感器并且并能围绕旋转轴线(106)旋转，由此所述至少一个辊被配置为在所述偏移距离处横跨所述焊接表面传送所述包装材料。
3.根据权利要求2所述的电感器，其中，所述焊接表面具有沿进给方向(107)的细长延伸部，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向被传送，并且其中所述旋转轴线平行于所述焊接表面并且垂直于所述进给方向延伸。
4.根据权利要求2所述的电感器，其中，所述至少一个辊布置在所述焊接表面中的对应的凹部(108,108’,108”,108”’)中。
5.根据权利要求3所述的电感器，其中，所述至少一个辊布置在所述焊接表面中的对应的凹部(108,108’,108”,108”’)中。
6.根据权利要求2至5中任一项所述的电感器，其包括至少一个支撑件(110)，所述至少一个辊枢转地固定在所述支撑件中，其中所述至少一个支撑件能够相对于所述焊接表面移动，使得枢转地固定到所述支撑件的所述辊在垂直于所述焊接表面和所述旋转轴线的所述第一方向上具有可变的位置。
7.根据权利要求2至5中任一项所述的电感器，其中，所述至少一个辊包括被弹性材料(111)覆盖的圆柱形表面。
8.根据权利要求6所述的电感器，其中，所述至少一个辊包括被弹性材料(111)覆盖的圆柱形表面。
9.根据权利要求1至5中任一项所述的电感器，其包括多个间隔元件(103,103’,103”,103”’)，所述多个间隔元件彼此分开设定分隔距离(109)，所述设定分隔距离(109)被限定为使得所述包装材料在沿所述进给方向被传送时沿着所述分隔距离与所述焊接表面保持分离。
10.根据权利要求6所述的电感器，其包括多个间隔元件(103,103’,103”,103”’)，所述多个间隔元件彼此分开设定分隔距离(109)，所述设定分隔距离(109)被限定为使得所述包装材料在沿所述进给方向被传送时沿着所述分隔距离与所述焊接表面保持分离。
11.根据权利要求7所述的电感器，其包括多个间隔元件(103,103’,103”,103”’)，所述多个间隔元件彼此分开设定分隔距离(109)，所述设定分隔距离(109)被限定为使得所述包装材料在沿所述进给方向被传送时沿着所述分隔距离与所述焊接表面保持分离。
12.根据权利要求8所述的电感器，其包括多个间隔元件(103,103’,103”,103”’)，所述多个间隔元件彼此分开设定分隔距离(109)，所述设定分隔距离(109)被限定为使得所述包装材料在沿所述进给方向被传送时沿着所述分隔距离与所述焊接表面保持分离。
13.根据权利要求9所述的电感器，其中，所述多个间隔元件包括多个辊(103,103’,103”,103”’)，每个辊布置在所述焊接表面中的相应的凹部(108,108’,108”,108”’)中。
14.根据权利要求10所述的电感器，其中，所述多个间隔元件包括多个辊(103,103’,103”,103”’)，每个辊布置在所述焊接表面中的相应的凹部(108,108’,108”,108”’)中。
15.根据权利要求11所述的电感器，其中，所述多个间隔元件包括多个辊(103,103’,103”,103”’)，每个辊布置在所述焊接表面中的相应的凹部(108,108’,108”,108”’)中。
16.根据权利要求12所述的电感器，其中，所述多个间隔元件包括多个辊(103,103’,103”,103”’)，每个辊布置在所述焊接表面中的相应的凹部(108,108’,108”,108”’)中。
17.根据权利要求1-5中任一项所述的电感器，其中所述至少一个间隔元件被布置为使得所述偏移距离沿进给方向(107)在所述焊接表面上方基本恒定，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向(107)被传送。
18.根据权利要求6所述的电感器，其中所述至少一个间隔元件被布置为使得所述偏移距离沿进给方向(107)在所述焊接表面上方基本恒定，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向(107)被传送。
19.根据权利要求7所述的电感器，其中所述至少一个间隔元件被布置为使得所述偏移距离沿进给方向(107)在所述焊接表面上方基本恒定，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向(107)被传送。
20.根据权利要求8所述的电感器，其中所述至少一个间隔元件被布置为使得所述偏移距离沿进给方向(107)在所述焊接表面上方基本恒定，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向(107)被传送。
21.根据权利要求9所述的电感器，其中所述至少一个间隔元件被布置为使得所述偏移距离沿进给方向(107)在所述焊接表面上方基本恒定，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向(107)被传送。
22.根据权利要求10所述的电感器，其中所述至少一个间隔元件被布置为使得所述偏移距离沿进给方向(107)在所述焊接表面上方基本恒定，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向(107)被传送。
23.根据权利要求11所述的电感器，其中所述至少一个间隔元件被布置为使得所述偏移距离沿进给方向(107)在所述焊接表面上方基本恒定，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向(107)被传送。
24.根据权利要求12所述的电感器，其中所述至少一个间隔元件被布置为使得所述偏移距离沿进给方向(107)在所述焊接表面上方基本恒定，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向(107)被传送。
25.根据权利要求13所述的电感器，其中所述至少一个间隔元件被布置为使得所述偏移距离沿进给方向(107)在所述焊接表面上方基本恒定，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向(107)被传送。
26.根据权利要求14所述的电感器，其中所述至少一个间隔元件被布置为使得所述偏移距离沿进给方向(107)在所述焊接表面上方基本恒定，所述包装材料在被布置为与所述焊接表面相对时沿所述进给方向(107)被传送。
27.根据权利要求1至5中任一项所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
28.根据权利要求6所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
29.根据权利要求7所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
30.根据权利要求8所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
31.根据权利要求9所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
32.根据权利要求10所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
33.根据权利要求11所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
34.根据权利要求12所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
35.根据权利要求13所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
36.根据权利要求14所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
37.根据权利要求17所述的电感器，其中，所述至少一个间隔元件与所述焊接表面热绝缘。
38.根据权利要求1至5中任一项所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
39.根据权利要求6所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
40.根据权利要求7所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
41.根据权利要求8所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
42.根据权利要求9所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
43.根据权利要求10所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
44.根据权利要求11所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
45.根据权利要求12所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
46.根据权利要求13所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
47.根据权利要求14所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
48.根据权利要求17所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
49.根据权利要求27所述的电感器，其中所述至少一个间隔元件能移除地固定到所述电感器。
50.一种用于密封包装材料(101)的密封机器，所述密封机器包括根据权利要求1至49中任一项所述的电感器(100)，其中所述包装材料被传送以布置成与所述电感器的焊接表面(102)相对，并且至少一个间隔元件(103,103’,103”,103”’)被布置成沿第一方向(104)从所述焊接表面朝向所述包装材料突出，于是当所述包装材料在密封机器中被传送时所述至少一个间隔元件将所述包装材料与所述焊接表面分开偏移距离(105)。
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CN108528851B (zh) * 2017-03-03 2022-02-01 利乐拉瓦尔集团及财务有限公司 用于包装材料的感应焊接的电感器

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US20190389145A1 (en) 2019-12-26
CN108528851A (zh) 2018-09-14
WO2018158383A1 (en) 2018-09-07
EP3369557A1 (en) 2018-09-05

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