Patents by Inventor Frank Brunnecker
Frank Brunnecker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11673342Abstract: The invention relates to a method for welding a connection between a first joining surface of a first molded part and a second joining surface of a second molded part, which by means of a clamping device are moved and braced with their joining surfaces in contact with one another, wherein the first molded part is at least partially transparent for a primary beam of a first radiation source and at least partially absorbent for a secondary beam of a second radiation source, and the second molded part is at least partially absorbent for the primary beam, wherein sequentially the second molded part is irradiated with the primary beam and the first molded part is irradiated with the secondary beam.Type: GrantFiled: February 21, 2017Date of Patent: June 13, 2023Assignee: EVOSYS LASER GMBHInventor: Frank Brunnecker
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Patent number: 11014308Abstract: The invention relates to a method for laser beam plastic welding, having the following steps: arranging a first mold part which substantially absorbs laser radiation on a receiving area, irradiating the first mold part using an electromagnetic radiation source, detecting the heat of the first mold part by means of a detector, generating an absorption profile of the first mold part, arranging a second mold part which is substantially transparent to laser radiation on the first mold part, and irradiating the two mold parts along the contour of a welding seam to be produced using a machining laser such that the energy input produced by the machining laser is controlled by a controller on the basis of the generated absorption profile of the first mold part.Type: GrantFiled: August 22, 2017Date of Patent: May 25, 2021Assignee: EVOSYS LASER GMBHInventor: Frank Brunnecker
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Publication number: 20200164594Abstract: The invention relates to a method for welding a connection between a first joining surface of a first molded part and a second joining surface of a second molded part, which by means of a clamping device are moved and braced with their joining surfaces in contact with one another, wherein the first molded part is at least partially transparent for a primary beam of a first radiation source and at least partially absorbent for a secondary beam of a second radiation source, and the second molded part is at least partially absorbent for the primary beam, wherein sequentially the second molded part is irradiated with the primary beam and the first molded part is irradiated with the secondary beam.Type: ApplicationFiled: February 21, 2017Publication date: May 28, 2020Inventor: Frank BRUNNECKER
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Publication number: 20190202135Abstract: The invention relates to a method for laser beam plastic welding, having the following steps: arranging a first mold part which substantially absorbs laser radiation on a receiving area, irradiating the first mold part using an electromagnetic radiation source, detecting the heat of the first mold part by means of a detector, generating an absorption profile of the first mold part, arranging a second mold part which is substantially transparent to laser radiation on the first mold part, and irradiating the two mold parts along the contour of a welding seam to be produced using a machining laser such that the energy input produced by the machining laser is controlled by a controller on the basis of the generated absorption profile of the first mold part.Type: ApplicationFiled: August 22, 2017Publication date: July 4, 2019Inventor: Frank BRUNNECKER
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Publication number: 20150298391Abstract: A method for joining a joining partner made of a thermoplastic material to a joining partner made of glass is provided. The method includes providing a thermoplastic joining partner made of a laser-absorbing thermoplastic material, providing a glass joining partner made of a laser-transmissive glass material, placing the thermoplastic joining partner and the glass joining partner on top of each other while applying a joining force to the joining partners, increasing the temperature of the glass joining partner, in particular using a radiation, and emitting a laser processing beam through the glass joining partner onto the boundary surface of the thermoplastic joining partner and into a joining zone, thus causing the thermoplastic joining partner to melt so as to form an adhesive bond between the two joining partners in the joining zone during the cooling thereof.Type: ApplicationFiled: November 6, 2013Publication date: October 22, 2015Inventors: Frank Brunnecker, Manuel Sieben, Tobias Jaus
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Publication number: 20140216648Abstract: In a method and an apparatus for laser welding of two joining members of plastic material in which a focussed laser beam is emitted into a welding zone in the region of the boundary surfaces of the joining members arranged in such a way as to face one another so as to form a weld seam having a particular seam depth between the joining members, it is provided that the laser power density is modulated during the welding process in a direction of the seam depth in the welding zone.Type: ApplicationFiled: August 20, 2012Publication date: August 7, 2014Applicant: LPKF LASER & ELECTRONICS AGInventors: René Geiger, Frank Brunnecker
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Patent number: 8759710Abstract: A process is described for form locking joining of two components through plastic deformation of one of the two components. In order for the tool for forming the form locking connection not to get in direct contact with the plasticized area of the joining partners, a third component between the tool and the two components to be joined through form locking is being used, which simultaneously enters into an adhesive bond with one of the two components to be joined through form locking. The thermal energy for creating the plastic state of one of the joining partners and for developing the adhesive bond is applied through electromagnetic radiation through the third component.Type: GrantFiled: May 11, 2007Date of Patent: June 24, 2014Assignee: LPKF Laser & Electronics AGInventors: Frank Brunnecker, Alexander Hofmann
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Patent number: 8415583Abstract: The invention relates to a clamping device for clamping at least two components (6, 7) in a radiation-protected machine tool, particularly in a laser welding device (1), comprising—a receptacle (18) for supporting the first component (6), —a clamping head (16) for applying a force to the second component (7) in order to generate clamping pressure at the joint surface (8, 9) between the two components (6, 7), —an inner clamping jaw (11) located within the peripheral beam path (10) of the machine tool, the jaw having a clamping surface (12) for internally clamping the components (6, 7), and—narrow connecting struts (15) for connecting the inner clamping jaw (11) to the external clamping head (16), said connecting struts (15) bridging the passage gap (7) in the clamping head (16) allowing access for the beam path (10) of the machine tool to the components (6, 7).Type: GrantFiled: April 10, 2008Date of Patent: April 9, 2013Assignee: LPKF Laser & Electronics AGInventors: Frank Brunnecker, Holger Aldebert, Andreas Kraus
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Publication number: 20100140232Abstract: The invention relates to a clamping device for clamping at least two components (6, 7) in a radiation-protected machine tool, particularly in a laser welding device (1), comprising—a receptacle (18) for supporting the first component (6), —a clamping head (16) for applying a force to the second component (7) in order to generate clamping pressure at the joint surface (8, 9) between the two components (6, 7), —an inner clamping jaw (11) located within the peripheral beam path (10) of the machine tool, the jaw having a clamping surface (12) for internally clamping the components (6, 7), and—narrow connecting struts (15) for connecting the inner clamping jaw (11) to the external clamping head (16), said connecting struts (15) bridging the passage gap (7) in the clamping head (16) allowing access for the beam path (10) of the machine tool to the components (6, 7).Type: ApplicationFiled: April 10, 2008Publication date: June 10, 2010Applicant: LPKF LASER & ELECTRONICS AGInventors: Frank Brunnecker, Holger Aldebert, Andreas Kraus
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Patent number: 7540934Abstract: In a method and an apparatus for irradiation welding of two thermoplastic components, a local temperature maximum, which circulates together with the laser beam and increases from cycle to cycle, and a correspondingly circulating, locally increased clamping pressure are generated in the area of joining.Type: GrantFiled: January 31, 2005Date of Patent: June 2, 2009Assignee: LPKF Laser & Electronics AGInventors: Alexander Hofmann, Stefan Hierl, Frank Brunnecker
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Publication number: 20070228106Abstract: A process is described for form locking joining of two components through plastic deformation of one of the two components. In order for the tool for forming the form locking connection not to get in direct contact with the plasticized area of the joining partners, a third component between the tool and the two components to be joined through form locking is being used, which simultaneously enters into an adhesive bond with one of the two components to be joined through form locking. The thermal energy for creating the plastic state of one of the joining partners and for developing the adhesive bond is applied through electromagnetic radiation through the third component.Type: ApplicationFiled: May 11, 2007Publication date: October 4, 2007Applicant: LPKF Laser & Electronics AGInventors: Frank BRUNNECKER, Alexander Hofmann
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Publication number: 20070204954Abstract: A process is described for form locking joining of two components through plastic deformation of one of the two components. In order for the tool for forming the form locking connection not to get in direct contact with the plasticized area of the joining partners, a third component between the tool and the two components to be joined through form locking is being used, which simultaneously enters into an adhesive bond with one of the two components to be joined through form locking. The thermal energy for creating the plastic state of one of the joining partners and for developing the adhesive bond is applied through electromagnetic radiation through the third component.Type: ApplicationFiled: May 11, 2007Publication date: September 6, 2007Applicant: LPKF Laser & Electronics AGInventors: Frank Brunnecker, Alexander Hofmann
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Publication number: 20050167042Abstract: In a method and an apparatus for irradiation welding of two thermoplastic components, a local temperature maximum, which circulates together with the laser beam and increases from cycle to cycle, and a correspondingly circulating, locally increased clamping pressure are generated in the area of joining.Type: ApplicationFiled: January 31, 2005Publication date: August 4, 2005Applicant: Laserquipment AGInventors: Alexander Hofmann, Stefan Hierl, Frank Brunnecker