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
  • 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
  • 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
  • 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
• • 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
  • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
  • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
• • 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
  • 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
  • B29C66/812—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
  • B29C66/8126—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 intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
  • B29C66/81264—Mechanical properties, e.g. hardness
• • 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
  • B29C66/812—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
  • B29C66/8126—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 intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
  • B29C66/81265—Surface properties, e.g. surface roughness or rugosity
• • 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
  • B29C66/81—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

Definitions

• the present invention relates to an ultrasonic welding device with a sonotrode transmitting ultrasonic vibrations and an anvil arranged on an anvil, the anvil being replaceably arranged on the anvil carrier, such that a bearing surface of the anvil with a normal force generated by a pretensioning device against a support surface of the anvil carrier is applied.
• the known ultrasonic welding device designed as a welding tongs has an anvil which is arranged exchangeably on an anvil carrier and which by means of a screw connection, the one as a normal force between a support surface of the anvil support and a bearing surface of the anvil acting biasing force is held fixed in a connecting plane between the bearing surface of the anvil and the support surface of the anvil support, to prevent longitudinal vibrations of the sonotrode passing through the support surface of the anvil are transferred to the support surface of the anvil carrier, lead to relative movements between the anvil and the anvil carrier. Otherwise, the occurrence of such relative movements could lead to local welds between the anvil and the anvil carrier in the connection plane, which would prevent a separation of the anvil from the anvil carrier necessary for the replacement of the anvil.
• the present invention is therefore based on the object to propose an ultrasonic welding device, the effective
• the ultrasonic welding device has the features of claim 1.
• the support surface of the anvil has a surface hardness which is greater than the surface hardness of the support surface of the anvil support, the support surface having a surface structure at least in the region of a partial surface, and wherein the support surface has a surface roughness at least in the region of the partial surface
• the differently shaped surface hardness with a relative to the support surface of the anvil carrier comparatively harder formed bearing surface of the anvil allows that at least in one Part surface of the support surface formed surface structure can impress under normal force in the support surface, if the support surface has a surface roughness with R z / R a > 2 at least in the region of the partial surface.
• the average roughness R a of the averaged roughness R z is sufficiently exceeded in order to form an effective obstacle to movement by the surface structure for a relative movement in the direction of the longitudinal vibrations of the sonotrode.
• a fixation that is to say an axial fixing of the anvil with respect to the anvil carrier, is achieved if a surface structure forms an obstacle to a relative movement in the longitudinal direction of vibration of the sonotrode, at least in the region of a partial surface.
• the surface structure has a linear structure component with an at least partially inclined at an angle ⁇ relative to the longitudinal direction of the sonotrode alignment, for example, already a single line-shaped structure with a ⁇ under an angle ⁇ to the longitudinal direction of the sonotrode formed as a line segment structural component be enough.
• the line structure can be formed in a straight line or as a serpentine line.
• the support surface of the anvil carrier has a surface hardness of less than 58 HRC and the bearing surface of the anvil has a surface hardness greater than 59 HRC.
• the surface structure is formed from a line grid, wherein preferably the grid has raised grid lines with a height determined by R z .
• a reproducible embodiment of the line grid is possible if the grid by means of laser irradiation of at least one
• Partial surface of the bearing surface is generated, wherein a machined in a milling process bearing surface of the anvil for generating the grid lines can be scanned with a laser beam in parallel feed paths.
• An advantageous embodiment can already be achieved if the bearing surface has a surface roughness with R z / R a > 5 at least in the region of the partial surface.
• Figure 1 is an isometric view of a designed as a welding gun ultrasonic welding device arranged in a pliers housing, located in the closed position welding jaws.
• Fig. 2 is an illustration of the open welding jaws of in
• Fig. 1 illustrated welding gun with an anvil disposed on anvil
• FIG. 3 shows the anvil illustrated in FIG. 2 in a bottom view with a schematic representation of a surface structure formed in a bearing surface of the anvil;
• FIG 4 shows an exemplary embodiment of the support surface with a surface structure formed in a partial surface of the support surface as a line grid.
• an ultrasonic welding device 10 designed as an ultrasonic welding gun with an upper tong part 11 and a lower tong part 12, which are arranged in a common tong housing 13.
• the upper tong part 1 1 has as an essential part of an ultrasonic vibration device with a arranged at the front end of the ultrasonic vibrator sonotrode 14, which forms a first welding jaw.
• the anvil 15 forms a second welding jaw, which is pivotable by means of an actuator not shown here around a formed in the rear part of the tong housing 13 pivot axis 1 8 against the sonotrode 14, such that one on the anvil 15th formed counter-surface 19 is moved against a working surface 20 of the longitudinal oscillations in the present case sonotrode 14.
• the anvil 15 is connected to the anvil carrier 17 via the screw connection 16 in such a way that a support surface 21 forming the underside of the anvil 15 (see also FIG. 3) on a top side of the anvil carrier 17 forming support surface 22 rests.
• the anvil support 17 is provided at its longitudinal edges with guide webs 23, 24, which form an axial guide device 25, such that for replacing the anvil 15 of the anvil 15 after loosening the two bolt connections 26, 27 in the present case screw 16 in Longitudinal direction 28 of the sonotrode 14, which in the present case coincides with the main direction of vibration of the sonotrode 14, can be taken.
• the screw connection 16 serves to produce a clamping or normal force N, with which the support surface 21 for fixing the anvil 15 in the longitudinal direction 28 is pressed against the support surface 22.
• the bearing surface 21 of the anvil in which two threaded bores 29, 30 are provided for the execution of the bolt connections 26, 27 in the illustrated embodiment, in the region of a partial surface 3 1 with a surface structure 32 only schematically shown in the present case provided, which is provided a plurality of, here as structure lines formed structural components 33.
• the structural components 33 form in the support surface 21 at least partially or partially raised grid lines 34, which in the illustrated in Fig.
• the anvil 15 and the anvil support 17 are formed in the present case of different materials, so that the anvil 15 and the anvil support 17 at least in the region of the support surface 21 and the support surface 22 have different surface hardness, in the present case 62 HRC for the anvil and 57 HRC for the anvil carrier 17 have.
• 4 shows an illustration of a support surface 36 of an anvil 37 having a part surface 38 formed therein, which has a line grid 39 which is produced by means of a laser application of the support surface 36 in the region of the part surface 38.
• a laser loading of the bearing surface 36 produced in milling machining takes place, such that the formation of a line screen 39 in the Y-axis direction extending raster lines 40 by the laser loading along parallel extending feed paths of the laser to form grooves 41 a material removal takes place.

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

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Citations (1)

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• 2017
  • 2017-09-04 DE DE102017215483.7A patent/DE102017215483B4/de not_active Revoked
• 2018
  • 2018-08-14 KR KR1020207006621A patent/KR102574555B1/ko active IP Right Grant
  • 2018-08-14 MX MX2020002387A patent/MX2020002387A/es unknown
  • 2018-08-14 JP JP2020512803A patent/JP7237937B2/ja active Active
  • 2018-08-14 US US16/641,856 patent/US11225033B2/en active Active
  • 2018-08-14 EP EP18765012.2A patent/EP3678809A1/de not_active Withdrawn
  • 2018-08-14 CN CN201880057168.2A patent/CN111065484A/zh active Pending
  • 2018-08-14 WO PCT/EP2018/072049 patent/WO2019042765A1/de unknown

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