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公开(公告)号：US20200009798A1
公开(公告)日：2020-01-09
申请号：US16026909
申请日：2018-07-03
申请人： Dukane IAS, LLC
摘要： A laser welding system for joining first and second thermoplastic workpieces, and including a clamp, an actuator, and a laser source. The clamp includes first and second clamping structures positioned together to engage opposite sides of the workpieces when they adjoin each other. The first clamping structure has a non-flat or irregular surface, facing the first workpiece. The actuator causes the clamping structures to press the first and second workpieces together. The laser source applies laser radiation having a wavelength of 2 microns toward the workpieces to be joined, while they are pressed together by the clamp, to melt irradiated portions of the workpieces to one another. The first clamping structure transmits substantially all of the energy of the laser radiation through the material. The first workpiece has a non-flat or irregular surface facing the first clamping structure, which substantially conforms with the surface of the first clamping structure.
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公开(公告)号：US20200009797A1
公开(公告)日：2020-01-09
申请号：US16212664
申请日：2018-12-06
申请人： Dukane IAS, LLC
发明人： Alexander Savitski
摘要： A laser welding system is directed to simultaneously joining respective layers of a first bag and a second bag. The system includes a first film layer adjacent to a second film layer for forming the first bag, and a third film layer adjacent to a fourth film layer for forming the second bag, each layer of the plurality of film layers being made of a thermoplastic material that absorbs laser radiation having a wavelength of about 2 microns. A non-absorbing carrier film layer is positioned between the second film layer and the third film layer, the non-absorbing carrier film layer being made of a material that transmits substantially all energy of the laser radiation. A laser source applies the laser radiation toward portions of the plurality of film layers to be joined, forming the first bag generally simultaneously with the second bag.
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公开(公告)号：US20210213564A1
公开(公告)日：2021-07-15
申请号：US17215520
申请日：2021-03-29
申请人： Dukane IAS, LLC
IPC分类号： B23K26/28 , B23K26/082 , B23K26/06
摘要： Device and method for laser welding around a circumference of a workpiece. A fixed, non-movable unitary optical reflector has a pair of optical reflecting surface portions on a first side surface and a second side surface, respectively, arranged at an obtuse angle relative to each other. A workpiece is fixed in an assembly having the reflector. During setup, the vertical distance is adjusted between the reflector and workpiece along an axis that is transverse to a longitudinal axis thereof without any adjustment of the reflecting surfaces. The first and second side surfaces define a curve that is transverse to the longitudinal axis. Once setup has been completed, a laser beam is directed so that it moves along the optical reflector to thereby produce a 360 degree circumferential weld around the workpiece. Another assembly is provided to change the laser beam direction multiple times to irradiate a circumference of a fixed workpiece from a fixed laser source.
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公开(公告)号：US20210170525A1
公开(公告)日：2021-06-10
申请号：US17182055
申请日：2021-02-22
申请人： Dukane IAS, LLC
IPC分类号： B23K26/082 , B23K26/06
摘要： Device and method for laser welding around a circumference of a workpiece. A fixed, non-movable unitary optical reflector has a pair of optical reflecting surface portions on a first side surface and a second side surface, respectively, arranged at an obtuse angle relative to each other. A workpiece is fixed in an assembly having the reflector. During setup, the vertical distance is adjusted between the reflector and workpiece along an axis that is transverse to a longitudinal axis thereof without any adjustment of the reflecting surfaces. The first and second side surfaces define a curve that is transverse to the longitudinal axis. Once setup has been completed, a laser beam is directed so that it moves along the optical reflector to thereby produce a 360 degree circumferential weld around the workpiece. Another assembly is provided to change the laser beam direction multiple times to irradiate a circumference of a fixed workpiece from a fixed laser source.
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公开(公告)号：US20200246916A1
公开(公告)日：2020-08-06
申请号：US16352104
申请日：2019-03-13
申请人： Dukane IAS, LLC
发明人： Alexander Savitski
IPC分类号： B23K26/282 , B23K26/06 , B23K26/08
摘要： Device and method for laser welding around a circumference of a workpiece. A fixed, non-movable unitary optical reflector is provided, which has a pair of optical reflecting surface portions on a first side surface and a second side surface, respectively, arranged at an obtuse angle relative to each other. A workpiece is positioned and fixed in an assembly that includes the unitary optical reflector. During setup, the vertical distance is adjusted between the unitary optical reflector and the workpiece along an axis that is transverse to a longitudinal axis of the workpiece without any adjustment of the reflecting surfaces, which remain fixed during setup. The first and second side surfaces define a curve that is transverse to the longitudinal axis. Once setup has been completed, a laser beam is directed so that it moves along the optical reflector to thereby produce a 360 degree circumferential weld around the workpiece.
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公开(公告)号：US10538036B2
公开(公告)日：2020-01-21
申请号：US15266182
申请日：2016-09-15
申请人： Dukane IAS, LLC
IPC分类号： B29C65/16 , B29C65/00 , B29L9/00 , B29K101/12
摘要： A laser welding method and system for joining portions of first and second workpieces of thermoplastic material that is partially permeable to a laser beam but absorbs radiation from the laser beam. The first and second workpieces, which are made of material that absorbs radiation from a laser beam, are clamped together. A mask is placed on a first surface of the first workpiece, the first surface being opposite the surface engaging the second workpiece. The mask is impermeable to a laser beam and forms a slot for passing a laser beam to the portion of the first surface of the upper workpiece exposed by the slot, so that heating and melting of the material of the workpieces is limited to the width of the slot. A laser beam is directed onto the slot and moved in a manner to illuminate the slot to melt and join the workpieces.
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公开(公告)号：US20180071990A1
公开(公告)日：2018-03-15
申请号：US15266182
申请日：2016-09-15
申请人： Dukane IAS, LLC
摘要： A laser welding method and system for joining portions of first and second workpieces of thermoplastic material that is partially permeable to a laser beam but absorbs radiation from the laser beam. The first and second workpieces, which are made of material that absorbs radiation from a laser beam, are clamped together. A mask is placed on a first surface of the first workpiece, the first surface being opposite the surface engaging the second workpiece. The mask is impermeable to a laser beam and forms a slot for passing a laser beam to the portion of the first surface of the upper workpiece exposed by the slot, so that heating and melting of the material of the workpieces is limited to the width of the slot. A laser beam is directed onto the slot and moved in a manner to illuminate the slot to melt and join the workpieces.
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公开(公告)号：US20220024143A1
公开(公告)日：2022-01-27
申请号：US17493328
申请日：2021-10-04
申请人： DUKANE IAS, LLC
发明人： Alexander Savitski , Leo Klinstein , Kenneth Andrew Holt , Hardik Shailesh Pathak , Robert Edward Aldaz
摘要： A method for optimizing a welding process to produce a weld joint having a predetermined strength includes measuring a plurality of melt layer thicknesses of weld joints for a plurality of sample assemblies formed by the welding process, measuring a plurality failure loads of weld joints for the plurality of sample assemblies, each of the measured plurality of failures loads being associated with one of the measured plurality of melt layer thicknesses, selecting a first failure load from the plurality of measured failure loads responsive to determining that the first failure load corresponds to a predetermined weld strength, and selecting a first melt layer thickness from the plurality of measured melt layer thicknesses that is associated with the selected first measured failure load.
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公开(公告)号：US11135778B2
公开(公告)日：2021-10-05
申请号：US16440371
申请日：2019-06-13
申请人： Dukane IAS, LLC
发明人： Alexander Savitski , Leo Klinstein , Kenneth Andrew Holt , Hardik Shailesh Pathak , Robert Edward Aldaz
摘要： A method for optimizing a welding process to produce a weld joint having a predetermined strength includes measuring a plurality of melt layer thicknesses of weld joints for a plurality of sample assemblies formed by the welding process, measuring a plurality failure loads of weld joints for the plurality of sample assemblies, each of the measured plurality of failures loads being associated with one of the measured plurality of melt layer thicknesses, selecting a first failure load from the plurality of measured failure loads responsive to determining that the first failure load corresponds to a predetermined weld strength, and selecting a first melt layer thickness from the plurality of measured melt layer thicknesses that is associated with the selected first measured failure load.
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公开(公告)号：US20180099456A1
公开(公告)日：2018-04-12
申请号：US15291600
申请日：2016-10-12
申请人： Dukane IAS, LLC
CPC分类号： B29C65/1635 , B29C59/026 , B29C65/16 , B29C65/1616 , B29C65/1658 , B29C66/1122 , B29C66/24245 , B29C66/306 , B29C66/30621 , B29C66/41 , B29C66/73366 , B29C66/73921 , B29C66/81431 , B29C66/8322 , B29C66/9161 , B29C66/934 , B29K2101/12 , B29K2105/253 , B29L2009/00 , B29L2031/712 , B65B51/22
摘要： A laser welding method and system join portions of two workpieces of thermoplastic material by clamping together the portions of the workpieces to be joined, against a baseplate engraved or etched to form an image to be replicated in the joined portions of the workpieces, and applying laser radiation to the portions of the clamped workpieces to be joined, to melt those portions of the clamped workpieces to be joined and to replicate the image in the joined portions of the clamped workpieces when the material solidifies. The thermoplastic material of the workpieces can be optically transparent but absorbs a portion of the laser radiation, so that both workpieces are heated and melted by the laser radiation. A portion of the melted workpiece material flows into the engraved or etched portions of the baseplate, forming an embossed surface on the lower surface of the area where the workpieces are joined.
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