Classifications

• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
  • B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
  • B23K20/106—Features related to sonotrodes
• • 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
  • B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
• • 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
  • B29C66/81411—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
• • 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
  • B29C66/81411—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
  • B29C66/81425—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 stepped, e.g. comprising a shoulder
• • 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
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
  • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
  • H01R43/0207—Ultrasonic-, H.F.-, cold- or impact 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
  • B29C66/80—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

Definitions

• the invention relates to a device for welding metal parts and for welding plastic parts, such as at least partially enclosing the welded metal parts with the plastic parts with an ultrasonic welding device having a sonotrode and at least one first counter electrode associated therewith, the ones to be welded Metal parts can be arranged between the counter electrode and a first sonotrode surface section which runs parallel to the sonotrode vibration direction.
• the invention further relates to a method for welding metal parts and for welding plastic parts.
• the welding surface In the case of metal parts, the welding surface must run parallel to the sonotrode vibration axis. In addition, a force must be applied to the parts to be welded, which is achieved by means of the counter electrode.
• the sonotrode oscillation axis runs perpendicular to the surfaces to be welded, so that consequently a separate sonotrode is used for each welding station in the known devices, in particular when a compression space which is adjustable in cross section is to be provided. This is the case when welding electrical conductors to nodes and then covering them with plastic material.
• the object of the present invention is to design a device and a method of the type mentioned at the outset such that metal or plastic can be welded by means of ultrasound using structurally simple means without connecting elements for deflecting the direction of vibration having to start from the sonotrode and without that the sonotrode must be converted or supplemented with parts if plastic is to be welded after a metal welding or vice versa.
• the object is essentially achieved in that a second section of the same sonotrode running perpendicular to the sonotrode vibration direction is assigned a further counter electrode or a section of the first counter electrode to form a receptacle for welding the plastic.
• the receptacle is preferably a compression space, the cross section of which is adjustable.
• one and the same sonotrode is consequently used to directly weld metal or plastic parts to it. Modifications to the sonotrode are not required for this.
• no auxiliary devices have to emanate from the sonotrode in order to redirect the direction of vibration. Rather, only sonotrode surface sections running perpendicular to one another are used, which interact with the parts to be welded, these sonotrode surface sections running either perpendicularly or parallel to the sonotrode oscillation axis.
• electrical conductors can consequently be connected to nodes with a single sonotrode and then encased in an electrically insulating manner by the elements being held in receptacles or Compression spaces are introduced, which are limited in sections by a single sonotrode.
• a peripheral sonotrode head section is preferably a limitation when welding metal parts, whereas an end face section of the sonotrode head forms the limitation of a receiving or compression space for plastic welding.
• a method for welding metal and plastic parts with an ultrasonic welding device having a sonotrode and at least one counter electrode is characterized in that the sonotrode is used directly for welding both plastic and metal, in which the plastic or metal parts are also used two sonotrode sections and these associated sections of one or more counter electrodes are brought into interaction, one of the sonotrode sections being aligned parallel and the other perpendicular to the sonotrode vibration direction.
• the invention is characterized by the use of the device described above for welding electrically conductive elements for producing a knot-shaped connection point and subsequent enveloping with electrically insulating material, the electrically conductive elements being in a first compression space which can be set in cross section and then the knot-shaped connection point is introduced into a second compression space that can be adjusted in cross section, the sonotrode surfaces of the two compression spaces that are effective for welding running parallel and perpendicular to the sonotrode vibration axis.
• Fig. 1 is a side view of a sonotrode of a device according to the invention.
• FIG. 2 shows a top view of the sonotrode according to FIG. 1.
• the figures show a sonotrode (10) of an ultrasound welding device which is known from the design and which comprises a rod-shaped sonotrode body (12) with a sonotrode head (14) present in the end region.
• the sonotrode is set in motion in the direction of its longitudinal axis (16) in order to transmit the required energy to the parts to be welded.
• the sonotrode (10) is designed and assigned to counter electrodes or anvils (18) and (20) in such a way that metal parts or plastic parts can optionally be welded by means of ultrasound. Since the vibration energy has to be applied parallel to the direction of vibration (16) for metal welding, perpendicular to the direction of vibration (16) for plastic welding, sections (22) and (24) of the sonotrode head (14) which run perpendicular to each other are used to delimit compression spaces (26) and (28) selected, which are adjustable in cross-section in a known manner for adjustment to the parts to be welded.
• the section (22) and thus the longitudinal axis of the compression space (26) runs parallel to the direction of oscillation (16), so that consequently electrical conductors such as cables (30), (32) are welded therein to achieve a node (34) can be.
• the compression space is consequently limited laterally by the section (22) of the sonotrode head (14) and the anvil or the counter electrode (18), the end faces of the compression space (26) being open.
• the adjustability of the compression chamber (26) can be achieved by splitting the anvil (18) into at least two parts that can be moved in different directions, as is made possible, for example, by the MINIC ultrasonic welding device from Schunk Ultrasound GmbH.
• the node (34) thus obtained is inserted into the compression space (28) in order to e.g. to be encased by strip-shaped plastic materials (36) and (38).
• a nose-shaped projection (42) extends from the end face (40) of the sonotrode head (14), which together with the end face (40) itself form a lateral boundary of the compression space (28).
• the other boundary surfaces are formed by the anvil (20), specifically by a projection (44) extending in the direction of the end surface (40) and by a surface (46) running parallel to the end surface (40).
• FIGS. 1 and 2 The adjustability of the anvils (18) and (20) assigned to the sonotrode sections (22) and (24) is illustrated by the arrows drawn in FIGS. 1 and 2, which shows that the compression spaces (26) and (28) are on Cross sections of the parts to be welded is adjustable.
• the sonotrode (10) or the sonotrode head (14) can also have a different geometry. It is crucial, however, that this provides sections in order to form compression spaces in which the surfaces of the metal parts to be welded can be aligned parallel and the surfaces of the plastic parts to be welded can be aligned perpendicular to the axis of vibration of the sonotrodes.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Manufacturing Of Electrical Connectors (AREA)
• Pressure Welding/Diffusion-Bonding (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6392058

Family Applications (1)

Country Status (2)

Cited By (3)

Families Citing this family (3)

Citations (2)

Family Cites Families (1)

• 1989
  • 1989-10-24 DE DE3935335A patent/DE3935335C1/de not_active Expired - Fee Related
• 1990
  • 1990-10-18 WO PCT/EP1990/001764 patent/WO1991006394A1/de unknown

Patent Citations (2)

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