CN102612428A - 用于两个塑料构件的超声波焊接的方法 - Google Patents

用于两个塑料构件的超声波焊接的方法 Download PDF

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CN102612428A
CN102612428A CN2010800524191A CN201080052419A CN102612428A CN 102612428 A CN102612428 A CN 102612428A CN 2010800524191 A CN2010800524191 A CN 2010800524191A CN 201080052419 A CN201080052419 A CN 201080052419A CN 102612428 A CN102612428 A CN 102612428A
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W·菲舍尔
D·胡格
C·费贝尔
S·舍恩菲尔德
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Robert Bosch GmbH
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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
    • 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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0672—Spin welding
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/081—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations having a component of vibration not perpendicular to the welding surface
    • B29C65/082—Angular, i.e. torsional ultrasonic welding
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B29C66/739—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 material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • 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
    • B29C66/003—Protecting areas of the parts to be joined from overheating
    • 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
    • B29C66/739—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 material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/748—Machines or parts thereof not otherwise provided for
    • B29L2031/7506—Valves

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  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

本发明涉及一种用于准备两个相互叠置的塑料构件（11，12）以借助扭转-超声波-摩擦焊来焊接这些构件的方法。为了保证非旋转对称的构件（11，12）的稳定且可靠的焊接过程及两个构件（11，12）的高密封连接的结果，在第一构件（11）的圆周中开设一个向着端面敞开的空槽（13），该空槽具有一个轴向定向的和一个径向定向的边界壁（131，132），在第二构件（12）上在面向第一构件（11）的一侧上成形上一个环绕的、轴向突出的材料鼻尖（14）作为能量方向发生器并且在背对第一构件（11）的一侧上在材料鼻尖（14）的轴向延长线上成形上一个环绕的、突出的接触区（15），该接触区具有一个形成突出超过第二构件（12）的用于焊接工具的接触面（151）的平整表面。这两个构件（11，12）这样地接合，使得所述材料鼻尖（14）伸入到所述空槽（13）中并且支撑在径向定向的边界壁（132）上。

Description

用于两个塑料构件的超声波焊接的方法
技术领域
本发明涉及一种用于准备两个相互叠置的塑料构件以借助扭转-超声波-摩擦焊来焊接这些构件的方法。
背景技术
已知的扭转-超声波-摩擦焊通常用于在这样的情况中连接旋转对称的塑料构件，其中对待焊接的构件的连接的密封性以及低热载荷提出高的要求。其例子是壳体与位于内部的电子装置的密封焊接和非纯粹的塑料的焊接，它们必须经得起灭菌时的热载荷，例如医学中的软管连接。
发明内容
按本发明的具有权利要求1的特征的方法具有优点，即通过待接合的塑料构件的几何设计造型获得接合伙伴在焊接区域中的焊接几何结构，该焊接几何结构即便在非旋转对称的构件时仍保证在扭转-超声波-摩擦焊时的可靠焊接过程并且导致接合伙伴的高密封的连接。在此，在需要时在一个或另一个构件中含有的、对温度敏感的零件、例如电力或电子元件不受损坏。按本发明设想和制成的焊接几何结构具有用于放置焊接装置的超声焊极的突出的接触区和用于将力和能量引入到焊接区中的能量方向发生器，这确保了，力和能量在焊接时从焊接装置的超声焊极垂直于接触面传递到焊接区上并且由此将最大的能量引入到焊接区中。材料鼻尖熔化并且建立材料锁合连接，其中，通过该焊接几何结构也保证了，熔液不从第一构件中的空槽排出并且形成径向或轴向突出的材料毛刺或者通过流入到构件中损坏在一个或另一个构件中含有的敏感元件、例如滑动触头、电子结构元件等。
通过在图2至6中列出的措施能够实现在权利要求1中给出的方法的有利的扩展构型和改进构型。
总体上通过给出的措施实现了焊接结果的优化，例如优化了从接触面向着焊接区的力和能量流并且用材料鼻尖的熔化材料优化地填满了空槽并且避免了熔液排出到第一构件的端面或圆周上。
根据按本发明的方法准备的并且接下来焊接成的、由两个齐平地相互叠置的塑料构件组成的组件在权利要求7中给出，有利的构造在权利要求8至10中给出。
附图说明
本发明的方法根据一个有待由两个塑料构件焊接成的组件的在附图中示出的实施例在下面的说明书中详细地阐述。其示出：
图1示出由两个相互叠置的、准备焊接的塑料构件组成的组件的纵剖面，
图2示出图1中在箭头II的方向上看组件的俯视图，
图3示出图1中的一部分的放大视图，
图4示出在两个构件的焊接之后并且在取下焊接装置的超声焊极之前图1中组件的纵剖面。
具体实施方式
下面根据在图1中示出的由两个塑料构件11、12组成的组件说明用于准备两个相互叠置的塑料构件以借助已知的扭转-超声波-摩擦焊来焊接这些构件的方法。在示出的实施例中，第一构件11是一个单侧敞开的壳体，例如用于接收陶瓷电位计形式的节流阀传感器，第二构件12是一个封闭该壳体的面状盖，该面状盖支承在壳体的端棱上。两个构件11、12在此不是旋转对称的并且齐平地相互叠置。
为了用已知的扭转-超声波-摩擦焊实现两个构件11、12之间的可靠的、高密封的连接，这两个构件11、12在它们的焊接区的区域中设有如下设计的焊接几何结构：
在第一构件11的圆周中开设一个向着第一构件11的端面敞开的空槽13，该空槽具有一个轴向定向的边界壁131和一个垂直于该轴向边界壁径向定向的边界壁132，下面简称为轴向边界壁131和径向边界壁132（图3）。一方面在第二构件12上在面向第一构件11的一侧上成形上一个环绕的、轴向突出的材料鼻尖14作为能量方向发生器。另一方面在第二构件12上在背对第一构件11的一侧上在材料鼻尖14的轴向延长线上成形上一个具有平整表面的突出的接触区15，该平整表面在该实施例中沿着构件边缘延伸。平整表面形成用于放置焊接工具的接触面151。如在图1中和放大地在图3中所示，两个构件11、12在焊接之前这样地接合，即材料鼻尖14伸入到空槽13中并且在此贴靠在轴向边界壁131上并且支撑在径向边界壁132上。
在示出的实施例中，这样地成形上该接触区15，即接触区15具有一个梯形横截面，该梯形横截面的较长的底边与第二构件12的外边缘齐平地结束并且其较短的底边位于接触面151中。接触区15的梯形横截面在此这样地匹配于第一构件11中的空槽13的横截面，即梯形横截面的较长的底边明显大于空槽13的径向深度。
环绕的材料鼻尖14这样地成形在第一构件11上，即材料鼻尖14具有一个横截面，该横截面呈具有不同长度的直角边（勾、股）的直角三角形的形式。在此，材料鼻尖14这样地定向，即在两个构件11、12接合时较长的直角边141贴靠在第二构件12中的空槽13的轴向边界壁131上并且三角尖支撑在第一构件11中的空槽13的径向边界壁132上。第一构件11中的空槽13的尺寸和第二构件12上的材料鼻尖14的横截面这样地相互匹配，即较长的直角边141大于轴向边界壁131的高度并且材料鼻尖14的横截面的较短的直角边小于空槽14的径向深度。
如上所述地准备好的并且在图1中示出的接合的两个构件11、12被安放到焊接装置中，其中第一构件11被固定在保持装置上并且在第二构件12上放置焊接装置的一个焊接工具，即所谓超声焊极16（图4）。超声焊极16在此仅仅支承在第二构件12上的接触区15的接触面151上。在焊接过程中，超声焊极16的能量从接触面151垂直地被传送给作为能量方向发生器工作的材料鼻尖14。因此，材料鼻尖14的一部分材料熔化并且与在第一构件11中对空槽13限界的边界壁131、132建立材料锁合连接。通过材料鼻尖14的设计构型，仅熔化这么多材料，使得熔液虽然填满空槽13，如在图4中所示，但是不向外挤出，从而在第一构件11的端面上以及在圆周上不出现塑料毛刺。在结束焊接过程之后，超声焊极16（图4）被去掉并且由两个固定地并且以高密封性相互连接的构件11、12组成的组件从焊接装置的保持装置中被取出。通过焊接过程，超声焊极16表面的型廓被塑造在接触区15的接触面151中，从而接触面16在从焊接装置被取出之后显示一个与超声焊极型廓的阴模相对应的表面图案。环绕的空槽13在不形成毛刺的情况下完全被材料填满，从而不需要在焊接好的组件上对焊接区进行事后加工。

Claims (10)

1.用于准备两个相互叠置的塑料构件（11，12）以借助扭转-超声波-摩擦焊来焊接这些构件的方法，其特征在于，在第一构件（11）的圆周中开设一个向着第一构件的端面敞开的空槽（13），该空槽具有一个轴向定向的和一个径向定向的边界壁（131，132），在第二构件（12）上在面向第一构件（11）的一侧上成形上一个环绕的、轴向突出的材料鼻尖（14）作为能量方向发生器并且在背对第一构件（11）的一侧上在材料鼻尖（14）的轴向延长线上成形上一个环绕的、突出的接触区（15），该接触区具有一个形成用于放置焊接工具的接触面（151）的平整表面，并且所述构件（11，12）这样地接合，使得所述材料鼻尖（14）伸入到所述空槽（13）中并且支撑在所述空槽（13）的径向定向的边界壁（132）上。
2.根据权利要求1的方法，其特征在于，这样地成形上所述接触区（15），使得所述接触区（15）具有一个具有两个平行底边的梯形横截面，这些底边中的较长的底边与所述第二构件（12）的外边缘齐平地结束并且所述梯形横截面的较短的底边位于所述接触面（151）中。
3.根据权利要求2的方法，其特征在于，所述第二构件（12）上的接触区（15）的梯形横截面这样地匹配于所述第一构件（11）中的空槽（13）的横截面，使得所述梯形横截面的较长的底边明显大于所述空槽（13）的径向深度。
4.根据权利要求1至3之一的方法，其特征在于，这样地将环绕的材料鼻尖（14）成形在所述第二构件（12）上，使得所述材料鼻尖（14）具有一个呈具有不同长度的直角边的直角三角形形式的横截面并且这样地定向，即在这两个构件（11、12）接合时较长的直角边（141）贴靠在所述空槽（13）的轴向定向的边界壁（131）上并且三角尖支撑在所述第一构件（11）中的空槽（13）的径向定向的边界壁（132）上。
5.根据权利要求4的方法，其特征在于，所述第一构件（11）中的空槽（13）的尺寸和所述第二构件（12）上的材料鼻尖（14）的横截面这样地相互匹配，使得较长的直角边（141）大于所述空槽（13）的轴向深度并且较短的直角边小于所述空槽（13）的径向深度。
6.根据权利要求1至5之一的方法，其特征在于，作为第一构件（11）使用一个端侧敞开的、具有环绕的平整端壁的壳体并且作为第二构件（12）使用一个封闭该壳体的面状盖，所述面状盖放置在所述壳体的端壁上。
7.由两个相互叠置的、通过扭转-超声波-摩擦焊相互连接的塑料构件（11，12）组成的组件，其特征在于，第一构件（11）具有一个环绕的、向着端面敞开的空槽（13），该空槽具有一个轴向定向的和一个径向定向的边界壁（131，132），并且第二构件（12）一方面具有一个轴向突出的、伸入到所述空槽（13）中的、环绕的材料鼻尖（14），所述材料鼻尖在焊接时至少部分地以填满所述空槽（13）的方式熔化，并且所述第二构件另一方面具有一个在背对第一构件（11）的一侧上在材料鼻尖（14）的轴向延长线上设置的、环绕的、突出的焊接装置接触区（15），该焊接装置接触区具有一个平整表面。
8.根据权利要求7的组件，其特征在于，所述接触区（15）一体地成形在所述第二构件（12）上并且具有一个具有平行底边的梯形横截面，这些底边中的较长的底边与所述第二构件（12）的外边缘齐平地结束。
9.根据权利要求8的组件，其特征在于，所述接触区（15）的梯形横截面的较长的底边明显大于所述空槽（13）的径向深度。
10.根据权利要求7至9之一的组件，其特征在于，所述第一构件（11）是一个端侧敞开的、具有环绕的平整端壁的壳体并且所述第二构件（12）是一个封闭该壳体的面状盖，所述面状盖支承在所述端壁上。
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