US20040216829A1 - Systems and methods for welding of parts - Google Patents

Systems and methods for welding of parts Download PDF

Info

Publication number
US20040216829A1
US20040216829A1 US10/633,177 US63317703A US2004216829A1 US 20040216829 A1 US20040216829 A1 US 20040216829A1 US 63317703 A US63317703 A US 63317703A US 2004216829 A1 US2004216829 A1 US 2004216829A1
Authority
US
United States
Prior art keywords
welding
curve
time
actual
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/633,177
Inventor
Kevin Gordon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schunk Ultraschalltechnik GmbH
Original Assignee
Stapla Ultrasonics Corp Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stapla Ultrasonics Corp Inc filed Critical Stapla Ultrasonics Corp Inc
Assigned to STAPLA ULTRASONICS CORPORATION, INC. reassignment STAPLA ULTRASONICS CORPORATION, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GORDON, KEVIN, JR.
Priority to CA002437647A priority Critical patent/CA2437647A1/en
Priority to MXPA03008724A priority patent/MXPA03008724A/en
Publication of US20040216829A1 publication Critical patent/US20040216829A1/en
Assigned to SCHUNK ULTRASCHALLTECHNIK GMBH reassignment SCHUNK ULTRASCHALLTECHNIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: STAPLA ULTRASONICS CORPORATION, INC.
Priority to US11/743,286 priority patent/US7491280B2/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06BMETHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/10Non-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/92Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • B29C66/92441Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time
    • B29C66/92443Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time following a pressure-time profile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/92Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • B29C66/9292Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges in explicit relation to another variable, e.g. pressure diagrams
    • B29C66/92921Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges in explicit relation to another variable, e.g. pressure diagrams in specific relation to time, e.g. pressure-time diagrams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/32Wires
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/95Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/951Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
    • B29C66/9512Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools by controlling their vibration frequency
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/95Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/951Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
    • B29C66/9513Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools characterised by specific vibration frequency values or ranges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/95Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/951Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
    • B29C66/9516Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools by controlling their vibration amplitude
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/95Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/959Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables
    • B29C66/9592Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables in explicit relation to another variable, e.g. X-Y diagrams

Definitions

  • German Patent Application DE 198 10 509 describes welding of dissimilar materials without prior tests.
  • ultrasonic waves can be coupled into a welding material and recorded as a measurement signal based on interactions with a joining layer.
  • the measurement signal can be stored in a measurement data memory.
  • an evaluation unit can use the measurement signal to determine characteristic quantities for a welding process.
  • German Patent Application DE 43 21 874 A1 describes control and regulation of process parameters during ultrasonic welding of plastic parts.
  • the joining force can be measured during welding to monitor the energy applied to the joining point between the parts being welded.
  • European Patent Application EP 0 567 426 B1 describes a method for welding of plastic parts in which an oscillation amplitude of a sonotrode that is welding plastic parts can be reduced after a pre-determined time. As such, the sonotrode can work at a reduced oscillation amplitude during a remaining welding time.
  • a control signal for reducing the oscillation amplitude can be triggered directly or indirectly based on the power transmitted to the parts being welded, as described, for example, in International Patent Application Publication WO 98/49009 and U.S. Pat. Nos. 5,435,863, 5,658,408, and 5,855,706.
  • German Patent Application DE 101 10 048 A1 describes checking connections made by ultrasonic wire bonding.
  • connections can be monitored on-line based on pre-determined stored master values and, based on monitoring the connections, conclusions can be drawn about the strength of the connections.
  • a method for welding of parts can include generating a measured or actual curve of a time-dependent welding parameter during welding, comparing the actual curve with a set curve during the period between to (the starting time of the set curve) and t e (the ending time of the set curve), and, based on a difference between the actual curve and the set curve, altering one or more welding process parameters such that the actual curve approaches the set curve during further welding.
  • the set curve and the actual curve can be compared at least at a time t 1 , in which t 0 ⁇ t 1 ⁇ t e ,
  • the set curve and the actual curve can be compared at identical welding parameter values (e.g. power values) and/or identical areas underneath the curves (e.g. energy values).
  • the set curve and the actual curve can be compared based on an energy input, which can be represented by the integral of a power vs. time curve.
  • changes to one or more welding process parameters can be based on comparisons made at one or more times (for example, times t 1 , t 2 , . . . , t n , with n ⁇ 2) between the set curve and actual curve.
  • the welding process parameters can be gradually altered over time.
  • the welding process parameters can be regulated based on the differences between the set curve and actual curve.
  • the welding process parameters can be altered based on stored values associated with the set curve (e.g. from tables of values associated with the set curve) and/or based on mathematical functions (e.g. extrapolations and/or interpolations based on the tables of values).
  • the disclosed methods can be used in ultrasonic welding of parts.
  • the methods can be used with an ultrasonic welding device that includes a generator, a converter, and a sonotrode.
  • the time-dependent welding parameter can include the emitted and/or the received power of an ultrasonic welding device.
  • the welding process parameters can include one or more of an oscillation amplitude of a sonotrode, a pressure acting on the parts being welded, a force acting on the parts being welded, an energy input from a sonotrode, and an oscillation frequency of a sonotrode.
  • FIG. 1 shows power vs. time curves for one system for welding conductors.
  • FIGS. 2-5 show power vs. time curves for an exemplary system for welding conductors.
  • FIG. 6 shows an exemplary system for welding conductors.
  • values of welding parameters for previous empirically-determined “good” welds of conductors can be stored and associated with the total cross-sections of the conductors that were welded.
  • the welding parameters can include one or more of pressure, amplitude, frequency, tool size, energy, welding time, and other parameters known to those of ordinary skill in the art.
  • a weld of conductors having a given total cross-section can be performed based on the stored parameters associated with the given total cross-section. For example, during welding, a welding parameter (e.g. a power) can be compared to a corresponding stored parameter.
  • a time window ⁇ t following the stored welding end time t e can be determined.
  • the time window ⁇ t can be based on the time t e ⁇ t 0 , where t e is the stored welding end time and to is the stored welding start time.
  • the time window At can range from about 10% to about 20% of the time difference t e ⁇ t 0 .
  • a weld can be classified as a “good” weld if a weld of conductors can be completed between t e and t e + ⁇ t.
  • a weld can be classified as an “insufficient” weld if the weld of conductors cannot be completed until after t e + ⁇ t.
  • a power vs. time curve for a good weld can be empirically determined, in which the area underneath the curve can represent the energy input associated with a weld of conductors having a total cross-section.
  • a subsequent welding of parts having the same total cross-section can be classified as “good” if the end time of welding occurs within the power vs. time curve or in a subsequent time window thereafter.
  • FIG. 1 shows power vs. time curves for the previously described method.
  • the power vs. time curve labelled 10 can correspond to a set curve associated with a satisfactory weld of conductors.
  • the subsequent welds can be completed at different times, such as the times t e1 , and t e2 .
  • welds in which the end of welding occurs before t e of set curve 10 or within a subsequent time window ⁇ t after t e can be deemed good.
  • the weld represented by the curve 12 can be deemed good, since welding for curve 12 was completed at the time t e1 , which time occurs within the time window ⁇ t of the time t e .
  • the weld represented by the curve 14 can be rejected, because welding for curve 14 was completed at the time t e2 , which time occurs later than the time t e + ⁇ t.
  • the time window ⁇ t can range from about 10% to about 20% of the duration of welding (i.e. the time difference t e ⁇ t 0 ) associated with the set curve 10 .
  • the disclosed systems and methods can regulate welding processes to compensate for one or more of these factors.
  • FIGS. 2-5 shows power vs. time curves for an exemplary system for welding of conductors, in which set curves are labelled with reference numeral 10 .
  • set curves are labelled with reference numeral 10 .
  • comparisons can be made between welds having total cross-sections that are substantially identical to the cross-section of the weld used to generate the set curve 10 .
  • the comparisons can be made at one or more times, at one or more constant power values (i.e. when the set curve and an actual curve have the same power value), and/or at one or more constant energy input values (i.e. when the set curve and an actual curve have the same integrated area).
  • a comparison can be made at a time, e.g. time t 1 , between the set curve 10 and one or more actual curves ascertained during welding, such as actual curves 16 (dash-dotted) and 18 (dashed).
  • the actual curve 16 can have a power value that is less than the power value of the set curve 10 .
  • one or more welding process parameters in the weld represented by the actual curve 16 can be changed so that the actual curve 16 can approach the set curve 10 .
  • a welding process parameter such as the amplitude of a sonotrode and/or a force exerted by the sonotrode on the parts being welded can be changed (e.g. increased or decreased).
  • one or more welding process parameters can be increased based on an actual curve having a power value that is less than a power value of a set curve at a given time, while one or more welding process parameters can be decreased based on an actual curve having a power value that is greater than a power value of a set curve at a given time.
  • a comparison can be made at a second time that is later than a first time, e.g. at a time t 2 that is later than the time t 1 .
  • the actual curve 16 can approach the set curve 10 , i.e. the former can comes closer to the latter at times t later than t 1 .
  • the actual curve 16 can have a power value that is greater than the power value of the set curve 10 at time t 2 .
  • one or more welding process parameters can be changed based on this difference between the actual curve 16 and the set curve 10 .
  • the amplitude and/or the force associated with a sonotrode can be changed (e.g. reduced).
  • the total energy input can be changed.
  • regulation of welding can be performed at various frequencies of an ultrasonic welding device, for example, at frequencies including one or more of 20 kHz, 35 kHz, 40 kHz, etc.
  • the welding represented by the actual curve 16 can be completed at a time t e3 which can be later than the end time t e of the set curve 10 .
  • a good weld can be formed regardless of whether the welding end time (e.g. t e3 ) occurs with a pre-determined time window ⁇ t of the ending time t e of the set curve 10 .
  • a “good” weld can include a satisfactory weld as that term is understood by those of ordinary skill in the art.
  • the welding end time of a good weld can be greater than or less than t e .
  • an upper limit on the welding end time can be chosen to inhibit continued regulation of welding.
  • the upper limit of welding end time can be denoted as time t max .
  • welds having welding end times greater than time t max can be rejected.
  • FIG. 2 shows a second actual curve 18 (dashed curve).
  • the actual curve 18 can run above the set curve 10 at time t 1 .
  • one or more welding process parameters can be changed (e.g. reduced) in order to approximate the actual curve 18 to the set curve 10 .
  • the actual curve 18 can match the set curve 10 at time t 2 .
  • the welding operation represented by the actual curve 18 can be completed at a time t e1 that is earlier than the time t e of the set curve 10 .
  • comparisons between a set curve, such as set curve 10 , and one or more actual curves, such as actual curves 16 and 18 can be made at one or more times t n and/or at one or more constant power values, and/or at one or more constant energy inputs. These comparisons are shown in FIG. 2.
  • the actual curves 16 , 18 and the set curve 10 can be compared at constant times t 1 , and/or constant areas E 1 , and/or constant power values P 1 .
  • one or more welding process parameters of a welding operation represented by an actual curve 16 , 18 can be changed based on one or more of the comparisons shown in FIG. 2.
  • the welding operations represented by the actual curves 16 , 18 can be changed, e.g. one or more welding process parameters can be increased (for curve 16 , for example) or decreased (for curve 18 , for example). Also for example, based on a comparison between the set curve 10 and actual curves 16 , 18 at constant energy input E 1 , the welding operation represented by the actual curve 16 can be changed to so that one or more welding process parameters can be increased, and the welding operation represented by the actual curve 18 can be changed so that one or more welding process parameters can be decreased.
  • FIGS. 3 to 5 show other power vs. time curves for an exemplary system for welding of parts as described herein, in which the set curves are labelled with reference numeral 10 .
  • a welding operation using an ultrasonic welding device can be regulated based on comparisons between a set curve 10 and an actual curve 20 at one or more power values P 1 . . . P n .
  • Changes in welding process parameters can be triggered based on differences between the set curve 10 and the actual curve 20 at different power values P 1 . . . P n .
  • one or more welding process parameters can be changed (e.g. increased) in order to drive actual curve 20 to set curve 10 . Regardless of this change, the total energy inputs for the welding operation to be regulated (i.e.
  • the end time t e1 at which the welding operation represented by the actual curve 20 is completed is between t 1 and t max .
  • one or more welding process parameters can be changed based on the systems and methods described herein. Regardless of this change, the welding operation represented by the actual curve 22 can be completed when the energy input of actual curve 22 is identical to that of set curve 10 .
  • one or more welding process parameters can be changed based on the schemes described herein.
  • an energy input can be changed (e.g. increased).
  • a further energy input ⁇ E ZUS can be made before the welding operation is completed at time t x .
  • comparisons between the actual curve 24 and the set curve 10 can be made at different times t 1 . . . t n .
  • FIG. 6 shows an exemplary system for welding of parts, such as electrical conductors.
  • a system 50 for welding parts as described herein can include an ultrasonic welding device 25 having a converter 26 and a sonotrode 30 .
  • the system for welding parts can include a booster 28 .
  • the sonotrode 30 i.e. the entire sonotrode 30 or a portion of the sonotrode 30
  • the counter electrode 32 can include one or more parts and can be constructed based on schemes similar to those described in U.S. Pat. Nos. 4,596,352 and 4,869,419.
  • the counter electrode 32 can provide a compression area of adjustable cross-section inside of which parts to welded can be placed.
  • the parts to be welded can include metallic parts (e.g. conductors) and/or non-metallic parts (e.g. plastic parts).
  • the converter 26 can be connected via a lead 34 to a generator 36 , and the generator 36 can be connected via a lead 38 to a digital data processing device 40 (e.g. a personal computer (PC)).
  • the digital data processing device 40 can control the ultrasonic welding device 25 and/or the generator 36 based on the schemes previously described herein. For example, the digital data processing device 40 can provide the welding process parameters and/or or the cross-section of conductors to be welded to the ultrasonic welding device 25 and/or the generator 36 .
  • the digital data processing device 40 can be configured to determine the power emission of the generator 36 , generate and/or otherwise be provided with a set curve and an actual curve of a welding process, compare the actual curve with the set curve, and alter one or more welding process parameters based on a difference between the actual curve and the set curve.
  • the digital data processing device 40 can include one or more software programs configured to perform one or more of these functions when executed on the digital data processing device 40 .
  • the systems and methods described herein can be used to weld metallic parts (e.g. conductors) and non-metallic parts (e.g. plastic parts) and are not limited to welding of electrical conductors.
  • one or more welding process parameters can be changed based on the schemes described herein.
  • the one or more welding process parameters can be altered sequentially and/or concurrently.
  • the power curves described herein can be ascertained based on the power emitted by a generator and/or the power input of a sonotrode or oscillator over time based on schemes known by those of ordinary skill in the art

Abstract

Systems and methods for welding of parts are described. In one embodiment, a method for ultrasonic welding of parts by means of an ultrasonic welding device including at least a generator, a converter, and a sonotrode based on a set curve of a time-dependent welding parameter appropriate to a welding connection meeting set requirements, where the welding duration corresponding to the set curve runs between a starting time t0 and an end time te, wherein during welding of the parts an actual curve of the time-dependent welding parameter is measured, where in the period between t0 and te the actual curve is compared with the set curve and, depending on the existing difference, at least one process parameter affecting welding is altered such that an equalization of set curve and actual curve occurs during further welding.

Description

    REFERENCE TO RELATED APPLICATIONS
  • This application claims priority to German Patent Applications DE 103 19 797.4 and DE 103 24 094.2 filed on Apr. 30, 2003 and May 27, 2003, respectively. [0001]
  • BACKGROUND
  • German Patent Application DE 198 10 509 describes welding of dissimilar materials without prior tests. In DE 198 10 509, ultrasonic waves can be coupled into a welding material and recorded as a measurement signal based on interactions with a joining layer. The measurement signal can be stored in a measurement data memory. Subsequently, an evaluation unit can use the measurement signal to determine characteristic quantities for a welding process. [0002]
  • German Patent Application DE 43 21 874 A1 describes control and regulation of process parameters during ultrasonic welding of plastic parts. In DE 43 21 874 A1, the joining force can be measured during welding to monitor the energy applied to the joining point between the parts being welded. [0003]
  • European Patent Application EP 0 567 426 B1 describes a method for welding of plastic parts in which an oscillation amplitude of a sonotrode that is welding plastic parts can be reduced after a pre-determined time. As such, the sonotrode can work at a reduced oscillation amplitude during a remaining welding time. A control signal for reducing the oscillation amplitude can be triggered directly or indirectly based on the power transmitted to the parts being welded, as described, for example, in International Patent Application Publication WO 98/49009 and U.S. Pat. Nos. 5,435,863, 5,658,408, and 5,855,706. [0004]
  • International Patent Application Publication WO 02/098636 describes a method for welding of plastic parts in which an oscillation amplitude of a sonotrode can be reduced based on a pre-determined course for optimization of welding. Subsequently, a characteristic parameter of a part being welded can be measured, and the sonotrode can complete the welding process based on the value of the measured parameter with a constant oscillation amplitude. [0005]
  • German Patent Application DE 101 10 048 A1 describes checking connections made by ultrasonic wire bonding. In DE 101 10 048 A1, connections can be monitored on-line based on pre-determined stored master values and, based on monitoring the connections, conclusions can be drawn about the strength of the connections. [0006]
  • SUMMARY
  • Systems and methods for welding of parts are described herein. [0007]
  • In one embodiment, a method for welding of parts can include generating a measured or actual curve of a time-dependent welding parameter during welding, comparing the actual curve with a set curve during the period between to (the starting time of the set curve) and t[0008] e (the ending time of the set curve), and, based on a difference between the actual curve and the set curve, altering one or more welding process parameters such that the actual curve approaches the set curve during further welding.
  • In one aspect, the set curve and the actual curve can be compared at least at a time t[0009] 1, in which t0<t1<te,
  • In one aspect, the set curve and the actual curve can be compared at identical welding parameter values (e.g. power values) and/or identical areas underneath the curves (e.g. energy values). For example, the set curve and the actual curve can be compared based on an energy input, which can be represented by the integral of a power vs. time curve. [0010]
  • In one aspect, changes to one or more welding process parameters can be based on comparisons made at one or more times (for example, times t[0011] 1, t2, . . . , tn, with n≧2) between the set curve and actual curve.
  • In one aspect, the welding process parameters can be gradually altered over time. [0012]
  • In one aspect, the welding process parameters can be regulated based on the differences between the set curve and actual curve. [0013]
  • In one aspect, the welding process parameters can be altered based on stored values associated with the set curve (e.g. from tables of values associated with the set curve) and/or based on mathematical functions (e.g. extrapolations and/or interpolations based on the tables of values). [0014]
  • The disclosed methods can be used in ultrasonic welding of parts. For example, the methods can be used with an ultrasonic welding device that includes a generator, a converter, and a sonotrode. [0015]
  • In one aspect, the time-dependent welding parameter can include the emitted and/or the received power of an ultrasonic welding device. [0016]
  • In one aspect, the welding process parameters can include one or more of an oscillation amplitude of a sonotrode, a pressure acting on the parts being welded, a force acting on the parts being welded, an energy input from a sonotrode, and an oscillation frequency of a sonotrode. [0017]
  • These and other features of the systems and methods described herein can be more fully understood by referring to the following detailed description and accompanying drawings. [0018]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows power vs. time curves for one system for welding conductors. [0019]
  • FIGS. 2-5 show power vs. time curves for an exemplary system for welding conductors. [0020]
  • FIG. 6 shows an exemplary system for welding conductors.[0021]
  • DETAILED DESCRIPTION
  • Illustrative embodiments will now be described to provide an overall understanding of the systems and methods described herein. One or more examples of the illustrative embodiments are shown in the drawings. Those of ordinary skill in the art will understand that the systems and methods described herein can be adapted and modified to provide devices, methods, schemes, and systems for other applications, and that other additions and modifications can be made to the systems and methods described herein without departing from the scope of the present disclosure. For example, aspects, components, features, and/or modules of the illustrative embodiments can be combined, separated, interchanged, and/or rearranged to generate other embodiments. Such modifications and variations are intended to be included within the scope of the present disclosure. [0022]
  • In one method of welding conductors, values of welding parameters for previous empirically-determined “good” welds of conductors (i.e. satisfactory welds of conductors) can be stored and associated with the total cross-sections of the conductors that were welded. The welding parameters can include one or more of pressure, amplitude, frequency, tool size, energy, welding time, and other parameters known to those of ordinary skill in the art. Subsequently, a weld of conductors having a given total cross-section can be performed based on the stored parameters associated with the given total cross-section. For example, during welding, a welding parameter (e.g. a power) can be compared to a corresponding stored parameter. If the value of the welding parameter is substantially similar and/or identical to the corresponding stored value of the parameter, a time window Δt following the stored welding end time t[0023] e can be determined. The time window Δt can be based on the time te−t0, where te is the stored welding end time and to is the stored welding start time. The time window At can range from about 10% to about 20% of the time difference te−t0. A weld can be classified as a “good” weld if a weld of conductors can be completed between te and te+Δt. A weld can be classified as an “insufficient” weld if the weld of conductors cannot be completed until after te+Δt.
  • In one example of the previously described method, a power vs. time curve for a good weld can be empirically determined, in which the area underneath the curve can represent the energy input associated with a weld of conductors having a total cross-section. A subsequent welding of parts having the same total cross-section can be classified as “good” if the end time of welding occurs within the power vs. time curve or in a subsequent time window thereafter. [0024]
  • FIG. 1 shows power vs. time curves for the previously described method. In FIG. 1, the power vs. time curve labelled [0025] 10 can correspond to a set curve associated with a satisfactory weld of conductors. The area underneath the set curve 10 can represent the energy input E, in which E = t = 0 t = te P t ,
    Figure US20040216829A1-20041104-M00001
  • where P represents power and t represents time. Other conductors having the same total cross-section as the conductors used to generate the [0026] set curve 10 can be welded using an energy input that is identical to that for the set curve 10 (i.e. identical to the value E, as previously provided). In FIG. 1, the power vs. time curves labelled 12 (dash-dotted curve) and 14 (dashed curve) can represent subsequent welds of conductors, in which the areas underneath the curves (i.e. the energy inputs) are identical to that of the set curve 10 (i.e. identical to the value E, as previously provided). As shown in FIG. 1, the subsequent welds can be completed at different times, such as the times te1, and te2. Based on previously collected empirical data (e.g. the empirical data used to generate the set curve 10), welds in which the end of welding occurs before te of set curve 10 or within a subsequent time window Δt after te can be deemed good. In the present example, therefore, the weld represented by the curve 12 can be deemed good, since welding for curve 12 was completed at the time te1, which time occurs within the time window Δt of the time te. In contrast, the weld represented by the curve 14 can be rejected, because welding for curve 14 was completed at the time te2, which time occurs later than the time te+Δt. As previously described, the time window Δt can range from about 10% to about 20% of the duration of welding (i.e. the time difference te−t0) associated with the set curve 10.
  • As will be understood by those of ordinary skill in the art, different materials, different placements of conductors in a welding tool (e.g. different placements of conductors between a sonotrode and an anvil), and/or fluctuations in temperature and/or environmental conditions can adversely affect welds. For example, one or more of these factors can cause a weld having the same total cross-section as a pre-determined weld to not be completed within a subsequent time window of the welding end time of a pre-determined power vs. time curve. [0027]
  • Potentially advantageously, the disclosed systems and methods can regulate welding processes to compensate for one or more of these factors. [0028]
  • FIGS. 2-5 shows power vs. time curves for an exemplary system for welding of conductors, in which set curves are labelled with [0029] reference numeral 10. Generally, as further described herein, comparisons can be made between welds having total cross-sections that are substantially identical to the cross-section of the weld used to generate the set curve 10. In embodiments, the comparisons can be made at one or more times, at one or more constant power values (i.e. when the set curve and an actual curve have the same power value), and/or at one or more constant energy input values (i.e. when the set curve and an actual curve have the same integrated area).
  • As shown in FIG. 2, in one embodiment, a comparison can be made at a time, e.g. time t[0030] 1, between the set curve 10 and one or more actual curves ascertained during welding, such as actual curves 16 (dash-dotted) and 18 (dashed). As shown, at time t1, the actual curve 16 can have a power value that is less than the power value of the set curve 10. Based on the power values of the actual curve 16 and the set curve 10 at time t1, one or more welding process parameters in the weld represented by the actual curve 16 can be changed so that the actual curve 16 can approach the set curve 10. For example, a welding process parameter such as the amplitude of a sonotrode and/or a force exerted by the sonotrode on the parts being welded can be changed (e.g. increased or decreased). In some embodiments, one or more welding process parameters can be increased based on an actual curve having a power value that is less than a power value of a set curve at a given time, while one or more welding process parameters can be decreased based on an actual curve having a power value that is greater than a power value of a set curve at a given time.
  • As shown in FIG. 2, in one embodiment, a comparison can be made at a second time that is later than a first time, e.g. at a time t[0031] 2 that is later than the time t1. Based on changing one or more welding process parameters at time t1, the actual curve 16 can approach the set curve 10, i.e. the former can comes closer to the latter at times t later than t1. As shown in FIG. 2, the actual curve 16 can have a power value that is greater than the power value of the set curve 10 at time t2. As previously described, in some embodiments, one or more welding process parameters can be changed based on this difference between the actual curve 16 and the set curve 10. For example, in some embodiments, the amplitude and/or the force associated with a sonotrode can be changed (e.g. reduced). Alternatively and/or in combination, the total energy input can be changed. In embodiments, regulation of welding can be performed at various frequencies of an ultrasonic welding device, for example, at frequencies including one or more of 20 kHz, 35 kHz, 40 kHz, etc.
  • As shown in FIG. 2, the welding represented by the [0032] actual curve 16 can be completed at a time te3 which can be later than the end time te of the set curve 10. Generally, for the disclosed systems and methods, a good weld can be formed regardless of whether the welding end time (e.g. te3) occurs with a pre-determined time window □t of the ending time te of the set curve 10. As used herein, a “good” weld can include a satisfactory weld as that term is understood by those of ordinary skill in the art. For the disclosed systems and methods, the welding end time of a good weld can be greater than or less than te. As will be understood by those of ordinary skill in the art, an upper limit on the welding end time can be chosen to inhibit continued regulation of welding. For example, as shown in FIG. 2, the upper limit of welding end time can be denoted as time tmax. In one embodiments, welds having welding end times greater than time tmax can be rejected.
  • FIG. 2 shows a second actual curve [0033] 18 (dashed curve). As shown in FIG. 2, the actual curve 18 can run above the set curve 10 at time t1. As previously described herein, one or more welding process parameters can be changed (e.g. reduced) in order to approximate the actual curve 18 to the set curve 10. As also shown in FIG. 2, the actual curve 18 can match the set curve 10 at time t2. Based on the value of the welding process parameter previously stored and/or changed based of the difference between the set curve 10 and the actual curve 18 at time t1, the welding operation represented by the actual curve 18 can be completed at a time te1 that is earlier than the time te of the set curve 10.
  • Generally, comparisons between a set curve, such as [0034] set curve 10, and one or more actual curves, such as actual curves 16 and 18, can be made at one or more times tn and/or at one or more constant power values, and/or at one or more constant energy inputs. These comparisons are shown in FIG. 2. For example, the actual curves 16, 18 and the set curve 10 can be compared at constant times t1, and/or constant areas E1, and/or constant power values P1. As described herein, one or more welding process parameters of a welding operation represented by an actual curve 16, 18 can be changed based on one or more of the comparisons shown in FIG. 2. For example, based on a comparison between the set curve 10 and actual curves 16, 18 at constant power value P1, the welding operations represented by the actual curves 16, 18 can be changed, e.g. one or more welding process parameters can be increased (for curve 16, for example) or decreased (for curve 18, for example). Also for example, based on a comparison between the set curve 10 and actual curves 16, 18 at constant energy input E1, the welding operation represented by the actual curve 16 can be changed to so that one or more welding process parameters can be increased, and the welding operation represented by the actual curve 18 can be changed so that one or more welding process parameters can be decreased.
  • FIGS. [0035] 3 to 5 show other power vs. time curves for an exemplary system for welding of parts as described herein, in which the set curves are labelled with reference numeral 10.
  • As previously described herein with reference to FIG. 2, a welding operation using an ultrasonic welding device can be regulated based on comparisons between a [0036] set curve 10 and an actual curve 20 at one or more power values P1 . . . Pn. Changes in welding process parameters can be triggered based on differences between the set curve 10 and the actual curve 20 at different power values P1 . . . Pn. For example, as shown in FIG. 3, based on comparing the set curve 10 and the actual curve 20 at a power value P2, one or more welding process parameters can be changed (e.g. increased) in order to drive actual curve 20 to set curve 10. Regardless of this change, the total energy inputs for the welding operation to be regulated (i.e. the welding operation represented by the actual curve 20) and the process upon which the set curve 10 is based can be kept identical. As shown in FIG. 3, the end time te1 at which the welding operation represented by the actual curve 20 is completed is between t1 and tmax.
  • As shown in FIG. 4, a regulation between the [0037] set curve 10 and an actual curve 22 can be performed based on an energy input. For example, as shown in FIG. 4, if the actual curve 22 and the set curve 10 diverge with reference to the energy input E at the respective measurement times t1, t2, . . . , tn, in which E = t = 0 t = t1 tn P t
    Figure US20040216829A1-20041104-M00002
  • then one or more welding process parameters can be changed based on the systems and methods described herein. Regardless of this change, the welding operation represented by the [0038] actual curve 22 can be completed when the energy input of actual curve 22 is identical to that of set curve 10.
  • As previously described, one or more welding process parameters, such as a pressure and/or an amplitude of an ultrasonic welding device, can be changed based on the schemes described herein. Alternatively and/or in combination, an energy input can be changed (e.g. increased). For example, as shown in FIG. 5, when the integral of actual curve [0039] 24 is identical to that of the set curve 10, a further energy input ΔEZUS can be made before the welding operation is completed at time tx. As previously described, comparisons between the actual curve 24 and the set curve 10 can be made at different times t1 . . . tn.
  • FIG. 6 shows an exemplary system for welding of parts, such as electrical conductors. As shown in FIG. 6, in one embodiment, a [0040] system 50 for welding parts as described herein can include an ultrasonic welding device 25 having a converter 26 and a sonotrode 30. As shown in FIG. 6, in some embodiments, the system for welding parts can include a booster 28. The sonotrode 30 (i.e. the entire sonotrode 30 or a portion of the sonotrode 30) can be associated with a counter electrode 32 serving as an anvil. The counter electrode 32 can include one or more parts and can be constructed based on schemes similar to those described in U.S. Pat. Nos. 4,596,352 and 4,869,419. The counter electrode 32 can provide a compression area of adjustable cross-section inside of which parts to welded can be placed. The parts to be welded can include metallic parts (e.g. conductors) and/or non-metallic parts (e.g. plastic parts). The converter 26 can be connected via a lead 34 to a generator 36, and the generator 36 can be connected via a lead 38 to a digital data processing device 40 (e.g. a personal computer (PC)). The digital data processing device 40 can control the ultrasonic welding device 25 and/or the generator 36 based on the schemes previously described herein. For example, the digital data processing device 40 can provide the welding process parameters and/or or the cross-section of conductors to be welded to the ultrasonic welding device 25 and/or the generator 36. The digital data processing device 40 can be configured to determine the power emission of the generator 36, generate and/or otherwise be provided with a set curve and an actual curve of a welding process, compare the actual curve with the set curve, and alter one or more welding process parameters based on a difference between the actual curve and the set curve. The digital data processing device 40 can include one or more software programs configured to perform one or more of these functions when executed on the digital data processing device 40.
  • While the systems and methods described herein have been shown and described with reference to the shown embodiments, those of ordinary skill in the art will recognize or be able to ascertain many equivalents to the embodiments described herein by using no more than routine experimentation. Such equivalents are intended to be encompassed by the scope of the present disclosure and the appended claims. [0041]
  • For example, the systems and methods described herein can be used to weld metallic parts (e.g. conductors) and non-metallic parts (e.g. plastic parts) and are not limited to welding of electrical conductors. [0042]
  • Also for example, one or more welding process parameters can be changed based on the schemes described herein. The one or more welding process parameters can be altered sequentially and/or concurrently. [0043]
  • Also for example, the power curves described herein can be ascertained based on the power emitted by a generator and/or the power input of a sonotrode or oscillator over time based on schemes known by those of ordinary skill in the art [0044]
  • Accordingly, the appended claims are not to be limited to the embodiments described herein, can comprise practices other than those described, and are to be interpreted as broadly as allowed under prevailing law. [0045]

Claims (15)

1. A method for ultrasonic welding of parts by means of an ultrasonic welding device including at least a generator, a converter, and a sonotrode, based on a set curve of a time-dependent welding parameter appropriate to a welding connection meeting set requirements, where the welding duration corresponding to the set curve runs between a starting time t0 and an end time te, wherein during welding of the parts an actual curve of the time-dependent parameter is measured, where in the period between t0 and te the actual curve is compared with the set curve and, depending on the existing difference, at least one welding process parameter affecting welding is altered such that an equalization of set curve and actual curve occurs during further welding.
2. The method of claim 1, wherein the set curve is compared with the actual curve at a time t1, where t0<t1<te.
3. The method of claim 1, wherein the actual curve is compared with the set curve at an identical power value.
4. The method of claim 1, wherein the actual curve is compared with the set curve at an identical energy input measured from the beginning of welding.
5. The method of claim 1, further comprising: based on a difference between the actual curve and the set curve, altering at least one process parameter of correspondingly stored values.
6. The method of claim 1, wherein at least one welding process parameter is altered gradually over time.
7. The method of claim 1, wherein the actual curve is matched to the set curve by a regulation process.
8. The method of claim 1, wherein the at least one welding process parameter is altered based on comparisons made at various times t1, t2 . . . tn where n≧2 between the set values and actual values.
9. The method of claim 8, wherein a regulation of the at least one welding process parameter based on differences between the set curve and actual curve is performed at the times t1, t2 . . . tn where n≧2.
10. The method of claim 1, wherein the emitted/received power of the ultrasonic welding device is selected as the time-dependent welding parameter.
11. The method of claim 1, wherein the welding process parameter to be altered includes one or more of: an amplitude of the sonotrode, a frequency of the sonotrode, a pressure acting on the parts to be welded, a force acting on the parts to be welded, and an energy input into the parts to be welded.
12. The method of claim 1, wherein one or more welding process parameters are altered singly.
13. The method of claim 1, wherein one or more welding process parameters are altered jointly.
14. The method of claim 1, wherein welding is regulated over its full duration based on the respective current difference between set curve and actual curve.
15. The method of claim 1, wherein welding is regulated over at least part of its duration based on the respective current difference between set curve and actual curve.
US10/633,177 2003-04-30 2003-08-01 Systems and methods for welding of parts Abandoned US20040216829A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002437647A CA2437647A1 (en) 2003-04-30 2003-08-19 Systems and methods for welding of parts
MXPA03008724A MXPA03008724A (en) 2003-04-30 2003-09-25 Systems and methods for welding of parts.
US11/743,286 US7491280B2 (en) 2003-04-30 2007-05-02 Systems and methods for welding of parts

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEDE10319797.4 2003-04-30
DE10319797 2003-04-30
DE10324094A DE10324094B3 (en) 2003-04-30 2003-05-27 Ultrasonic welding system for joining electrical conductors together has converter and sonotrode and has control circuit comparing actual curve of pressure plotted against time with ideal curve
DEDE10324094.2 2003-05-27

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/743,286 Continuation US7491280B2 (en) 2003-04-30 2007-05-02 Systems and methods for welding of parts

Publications (1)

Publication Number Publication Date
US20040216829A1 true US20040216829A1 (en) 2004-11-04

Family

ID=33311759

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/633,177 Abandoned US20040216829A1 (en) 2003-04-30 2003-08-01 Systems and methods for welding of parts
US11/743,286 Expired - Lifetime US7491280B2 (en) 2003-04-30 2007-05-02 Systems and methods for welding of parts

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/743,286 Expired - Lifetime US7491280B2 (en) 2003-04-30 2007-05-02 Systems and methods for welding of parts

Country Status (9)

Country Link
US (2) US20040216829A1 (en)
JP (1) JP2006524577A (en)
KR (1) KR101067259B1 (en)
CN (1) CN100563901C (en)
CA (1) CA2437647A1 (en)
CH (1) CH697295B1 (en)
DE (1) DE10324094B3 (en)
MX (1) MXPA03008724A (en)
WO (1) WO2004096480A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1997580A1 (en) 2007-05-29 2008-12-03 Leoni Wiring Systems France Method and device for welding a busbar and cables by vibrations
US7810699B1 (en) * 2009-04-22 2010-10-12 Gm Global Technology Operations, Inc. Method and system for optimized vibration welding
US20120226373A1 (en) * 2011-03-03 2012-09-06 GM Global Technology Operations LLC Multi-mode ultrasonic welding control and optimization
US20150288123A1 (en) * 2012-12-03 2015-10-08 Schunk Sonosystems Gmbh Ultrasound welding device and method for welding electrical conductors
US11179812B2 (en) 2017-05-02 2021-11-23 Lg Chem, Ltd. Apparatus and method for inspecting welding of secondary battery

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004022509A1 (en) * 2004-01-07 2005-08-25 Stapla Ultraschall-Technik Gmbh Consolidating and sealing a tube between a sonotrode and the anvil of an ultrasonic welder where the sonotrode is activated and displaced relative to a counter electrode useful for automatic consolidation and sealing of tubes
DE102006043605B3 (en) 2006-09-16 2008-03-27 Stapla Ultraschalltechnik Gmbh Method for quality monitoring in ultrasonic welding
CN101211375B (en) * 2006-12-29 2010-08-25 英业达股份有限公司 Part unusual action information generation method
DE102008060301B4 (en) 2008-12-03 2012-05-03 Grenzebach Maschinenbau Gmbh Method and device for non-positive connection of vitreous components with metals and computer program and machine-readable carrier for carrying out the method
DE202008016010U1 (en) 2008-12-03 2009-02-19 Grenzebach Maschinenbau Gmbh Device for non-positive connection of vitreous components with metals
JP5335450B2 (en) * 2009-01-22 2013-11-06 カルソニックカンセイ株式会社 Ultrasonic metal bonding machine
JP5335463B2 (en) * 2009-02-10 2013-11-06 カルソニックカンセイ株式会社 Ultrasonic metal bonding machine
US20120153006A1 (en) * 2010-12-16 2012-06-21 Lg Chem, Ltd. Ultrasonic welding system and method for forming a weld joint
DE102012106491A1 (en) 2012-07-18 2014-01-23 Herrmann Ultraschalltechnik Gmbh & Co. Kg Method for controlling an ultrasonic machining process
DE102015120165A1 (en) 2015-11-20 2017-05-24 Kromberg & Schubert Gmbh Apparatus and method for monitoring an ultrasonic welding process
DE102017220233A1 (en) * 2017-10-27 2019-05-02 Robert Bosch Gmbh WELDING CONTROL FOR A WELDING SYSTEM, WELDING SYSTEM AND WELDING METHOD FOR CONTROLLING QUALITY OF A WELDING CONNECTION
EP3871822A1 (en) 2020-02-27 2021-09-01 Telsonic Holding AG Vibration processing system, method for monitoring the state of a vibration processing system and method for determining a reference value
GB2595710B (en) * 2020-06-04 2022-06-08 Advance Technical Systems Ltd Operation analysis
CN114103133B (en) * 2020-08-25 2023-03-24 比亚迪股份有限公司 Ultrasonic generator, method for calibrating working frequency of ultrasonic generator and welding equipment
CN112163693A (en) * 2020-08-27 2021-01-01 福建摩尔软件有限公司 Control and optimization method, device, equipment and medium for reflow soldering process
CN112355440B (en) * 2020-10-29 2022-08-05 哈尔滨工业大学(威海) Ultrasonic tracking system for underwater welding seam
CN112427797A (en) * 2020-11-04 2021-03-02 珠海泰坦新动力电子有限公司 Visual debugging method, device, system and medium for welding machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4631685A (en) * 1984-12-07 1986-12-23 General Motors Corporation Method and apparatus for ultrasonic plastic forming and joining
US4818313A (en) * 1985-06-28 1989-04-04 Tetra Pak International Method for regulating the energy supply to a sealing device for the sealing of thermoplastic material
US5435863A (en) * 1992-04-21 1995-07-25 Branson Ultrasonics Corporation Method for processing workpieces by ultrasonic energy
US5658408A (en) * 1992-04-21 1997-08-19 Branson Ultrasonics Corporation Method for processing workpieces by ultrasonic energy
US5855706A (en) * 1992-04-21 1999-01-05 Branson Ultrasonics Corporation Simultaneous amplitude and force profiling during ultrasonic welding of thermoplastic workpieces

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2823361A1 (en) 1978-05-29 1979-12-13 Siemens Ag MONITORING OF ULTRASONIC AND SOUND DEVICES
DD154343A1 (en) * 1980-12-22 1982-03-17 Wolfgang Klimes PROCESS FOR LIMITING THE WELDING ENGINE TRANSMITTED TO THE WORKPIECE IN ULTRASOUND LUBRICANTS
DE3429776A1 (en) * 1984-08-13 1986-02-13 Siemens AG, 1000 Berlin und 8000 München Method for quality control in ultrasonic welding and associated apparatus
EP0319631A1 (en) 1987-11-09 1989-06-14 Emerson Electric Co. Method of controlling an ultrasonic generator
DE58907246D1 (en) * 1989-10-06 1994-04-21 Siemens Ag Method and device for welding metallic workpieces by ultrasound.
DE4131565C2 (en) 1991-09-18 2002-04-25 Bleich Karl Heinz Process for optimizing the welding process in bonding processes
DE4321874A1 (en) * 1993-07-01 1995-01-12 Ver Foerderung Inst Kunststoff Process and device for the open-loop and closed-loop control of process parameters in ultrasonic welding
DE4429684A1 (en) * 1994-08-22 1996-02-29 Schunk Ultraschalltechnik Gmbh Method for compacting and welding of electric conductors, e.g. braid joints
JP3780636B2 (en) * 1997-06-24 2006-05-31 株式会社デンソー Ultrasonic welding method
DE19810509C2 (en) * 1998-03-11 2000-02-10 Fraunhofer Ges Forschung Ultrasonic welding device
DE10110048A1 (en) * 2001-03-02 2002-09-05 Bosch Gmbh Robert Method for testing connections made by ultrasonic wire bonding
DE10126943A1 (en) 2001-06-01 2002-12-12 Stapla Ultaschalltechnik Gmbh Plastic component welding or deformation method involves reduction of amplitude and measurement of a parameter to determine a subsequent period at constant amplitude
US20040178249A1 (en) 2003-03-14 2004-09-16 Stapla Ultrasonics Corporation, Inc. Schemes for ultrasonically connecting electrical conductors

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4631685A (en) * 1984-12-07 1986-12-23 General Motors Corporation Method and apparatus for ultrasonic plastic forming and joining
US4818313A (en) * 1985-06-28 1989-04-04 Tetra Pak International Method for regulating the energy supply to a sealing device for the sealing of thermoplastic material
US5435863A (en) * 1992-04-21 1995-07-25 Branson Ultrasonics Corporation Method for processing workpieces by ultrasonic energy
US5658408A (en) * 1992-04-21 1997-08-19 Branson Ultrasonics Corporation Method for processing workpieces by ultrasonic energy
US5855706A (en) * 1992-04-21 1999-01-05 Branson Ultrasonics Corporation Simultaneous amplitude and force profiling during ultrasonic welding of thermoplastic workpieces

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1997580A1 (en) 2007-05-29 2008-12-03 Leoni Wiring Systems France Method and device for welding a busbar and cables by vibrations
FR2916665A1 (en) * 2007-05-29 2008-12-05 Valeo Electronique Sys Liaison METHOD AND DEVICE FOR WELDING A BUS BAR AND CABLES
US7810699B1 (en) * 2009-04-22 2010-10-12 Gm Global Technology Operations, Inc. Method and system for optimized vibration welding
US20100270358A1 (en) * 2009-04-22 2010-10-28 Gm Global Technology Operations, Inc. Method and system for optimized vibration welding
CN101898275A (en) * 2009-04-22 2010-12-01 通用汽车环球科技运作公司 The method and system of optimal vibration welding
US20120226373A1 (en) * 2011-03-03 2012-09-06 GM Global Technology Operations LLC Multi-mode ultrasonic welding control and optimization
US8450644B2 (en) * 2011-03-03 2013-05-28 GM Global Technology Operations LLC Multi-mode ultrasonic welding control and optimization
US20150288123A1 (en) * 2012-12-03 2015-10-08 Schunk Sonosystems Gmbh Ultrasound welding device and method for welding electrical conductors
US9496670B2 (en) * 2012-12-03 2016-11-15 Schunk Sonosystems Gmbh Ultrasound welding device and method for welding electrical conductors
US11179812B2 (en) 2017-05-02 2021-11-23 Lg Chem, Ltd. Apparatus and method for inspecting welding of secondary battery

Also Published As

Publication number Publication date
US20070199641A1 (en) 2007-08-30
MXPA03008724A (en) 2004-11-09
WO2004096480A1 (en) 2004-11-11
WO2004096480B1 (en) 2005-01-13
DE10324094B3 (en) 2004-09-09
JP2006524577A (en) 2006-11-02
CN1816413A (en) 2006-08-09
KR101067259B1 (en) 2011-09-27
CN100563901C (en) 2009-12-02
CA2437647A1 (en) 2004-10-30
CH697295B1 (en) 2008-08-15
US7491280B2 (en) 2009-02-17
KR20060017505A (en) 2006-02-23

Similar Documents

Publication Publication Date Title
US7491280B2 (en) Systems and methods for welding of parts
US8021504B2 (en) Quality control method for ultrasound welding
US7647828B2 (en) Method for measuring and/or regulating the oscillation amplitude of an ultrasonic transmitter, and an ultrasonic welding device
JP3161339B2 (en) Method for controlling welding conditions of resistance welding machine
US5406044A (en) Displacement monitoring system for stud welding
US4434351A (en) Method and system for determining weld quality in resistance welding
US8450644B2 (en) Multi-mode ultrasonic welding control and optimization
CN100352592C (en) Ultrasonic wave coating apparatus
EP0891836A2 (en) Electric resistance welding system
CN102971105A (en) Systems and methods for statistically analyzing welding operations
US20090283569A1 (en) System and method for monitoring welding
EP1301331A1 (en) Energy controller for vibration welder
US20110233174A1 (en) Spot welding method
US6912906B2 (en) Method and apparatus for the production and quality testing of a bonded wire connection
CN110227878B (en) Method for detecting dislocation or loss of nut by using resistance welding equipment
US6308881B1 (en) Quality control method
KR102166234B1 (en) System and method for resistance spot welding control
US20220075341A1 (en) Method for Detecting the Making or Breaking of Contact of a Sonotrode with a Counter-Element
JPH09216072A (en) Control device of resistance welding equipment
JP3128500B2 (en) Nugget formation monitoring device
JP4232257B2 (en) Projection welding pass / fail judgment method
JP2000102880A (en) Method and device for controlling welding conditions of resistance welding
JPH07266060A (en) Resistance welding electric source
JP3120933B2 (en) Resistance welding control method
JPH03207581A (en) Method for controlling resistance welding machine

Legal Events

Date Code Title Description
AS Assignment

Owner name: STAPLA ULTRASONICS CORPORATION, INC., MASSACHUSETT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GORDON, KEVIN, JR.;REEL/FRAME:014371/0440

Effective date: 20030731

AS Assignment

Owner name: SCHUNK ULTRASCHALLTECHNIK GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:STAPLA ULTRASONICS CORPORATION, INC.;REEL/FRAME:016144/0084

Effective date: 20050404

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE