Patents Assigned to Ultraschalltechnik GmbH
  • Patent number: 9056427
    Abstract: The present invention concerns a sonotrode for a device for continuously processing material webs by means of ultrasound. To provide a sonotrode and an ultrasonic processing device having a sonotrode which is simple to produce and ensures reliable transverse sealing seam production, wherein the energy consumption of the sonotrode is low and the sonotrode also has a high level of rotational truth accuracy and adequate stiffness, it is proposed according to the invention that the sonotrode comprises a substantially roller-shaped core and at least two bars, wherein the bars extend in the direction of the core axis and each have a sealing surface facing away from the roller-shaped core.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: June 16, 2015
    Assignee: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventor: Ulrich Vogler
  • Patent number: 8955574
    Abstract: The present invention relates to an ultrasonic welding device with a generator for generating a high-frequency a.c. voltage, a converter for converting the a.c. voltage into a mechanical ultrasonic vibration and a sonotrode for transmitting the ultrasonic vibration to material to be worked, wherein the converter and the sonotrode are rotatable and a rotary coupler is arranged between the generator and the converter for the transmission of electrical energy from a static arrangement to a rotating arrangement, comprising a stationary element and an element that is rotatable in relation to the stationary element, wherein the stationary element comprises a primary circuit with two input terminals, which are connected to each other by means of a second coil with M turns, wherein the first and second coils are arranged in such a way that, when an a.c. voltage is applied to the input terminals, the magnetic field generated by the first coil induces an a.c. voltage in the second coil.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: February 17, 2015
    Assignee: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventor: Dieter Jurzitza
  • Patent number: 8899295
    Abstract: The present invention concerns an ultrasonic oscillating unit comprising a converter and a sonotrode (1) optionally connected to the converter by way of an amplitude transformer (2), wherein the sonotrode (1) has a sealing surface (10) which is substantially in the form of a circular ring or a cylinder surface and the ultrasonic oscillating unit has a holder (3) for fastening the ultrasonic oscillating unit to a machine stand. To achieve that it is proposed according to the invention that the holder (3) is fastened directly to the sonotrode (1).
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: December 2, 2014
    Assignee: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventor: Ulrich Vogler
  • Publication number: 20140230994
    Abstract: The present invention relates to a method for reshaping a workpiece, in which a reshaping force is exerted on the workpiece by means of a reshaping tool and the workpiece is heated during or before the reshaping of the workpiece, wherein the heating of the workpiece is performed by the at least partial absorption of an ultrasonic vibration in the workpiece. In order to provide a method and a device for reshaping a workpiece that avoids the aforementioned. disadvantages, in particular when reshaping materials with a highly temperature-dependent damping constant, it is proposed according to the invention that, before the reshaping force is applied to the workpiece, at least a first portion of the workpiece is brought to a temperature which differs from the temperature of a second portion of the workpiece that comes into contact with the reshaping tool.
    Type: Application
    Filed: October 5, 2012
    Publication date: August 21, 2014
    Applicant: Hermann Ultraschalltechnik GmbH & Co. KG
    Inventor: Ulf Riehm
  • Publication number: 20140157899
    Abstract: The present invention relates to a method for determining the oscillation amplitude of a sonotrode excited by a converter, wherein the converter is connected to a current generator and the current IE(t) provided by the current generator and flowing through the converter is measured. According to the invention, in order to provide a method for determining the oscillation amplitude of a sonotrode excited by a converter, the voltage UE(t) applied to the converter by the current generator is measured and the oscillation amplitude of the sonotorode or a field quantity of the electrical oscillation system comprising the current generator and the converter, said field quantity being related to the oscillation amplitude of the sonotrode, is calculated from the measured voltage UE(t) and from the measured current IE(t).
    Type: Application
    Filed: July 23, 2012
    Publication date: June 12, 2014
    Applicant: HERRMANN ULTRASCHALLTECHNIK GMBH & CO. KG
    Inventor: Dieter Jurzitza
  • Patent number: 8702883
    Abstract: Invention relating to a method for controlling an ultrasonic machining, in which an ultrasonic vibration is transmitted via a sonotrode into the material to be machined. During the first machining interval, a first welding variable of the group S, consisting of the frequency f and the amplitude ü of the ultrasonic vibration, the force F, which the sonotrode exerts on the material to be machined, the power P, which the generator delivers, and the speed v, with which the sonotrode is moved in the direction of the material to be machined, is kept constant until a first target variable of the group Z adopts a predetermined value. During an adjoining second machining interval, a second welding variable of the group S is kept constant until a second target variable of the group Z adopts a predetermined value, wherein the first and the second target value differ.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: April 22, 2014
    Assignee: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventors: Thomas Herrmann, Volker Aust
  • Publication number: 20140092712
    Abstract: The present invention relates to an ultrasonic sonotrode with a main sonotrode body and a sealing area arranged on one side of the main sonotrode body. The main sonotrode body has two through-slits extending in or through the main sonotrode body respectively along a slit axis. These through-slits intersect in such a way that a through-channel through the main sonotrode body is formed from the one through-slit into the other through-slit. This creates a slit portion that is formed both by the one through-slit and the other through-slit. Provided in this main sonotrode body is a processing channel, which extends along a processing channel axis from a side area of the main sonotrode body up to the through-channel and is arranged substantially symmetrically about the processing channel axis.
    Type: Application
    Filed: March 12, 2012
    Publication date: April 3, 2014
    Applicant: HERMANN ULTRASCHALLTECHNIK GMBH & CO. KG
    Inventor: Stefan Zendler
  • Publication number: 20140083623
    Abstract: The present invention relates to an ultrasonic welding device with a generator for generating a high-frequency a.c. voltage, a converter for converting the a.c. voltage into a mechanical ultrasonic vibration and a sonotrdoe for transmitting the ultrasonic vibration to material to be worked, wherein the converter and the sonotrode are rotatable and a rotary coupler is arranged between the generator and the converter for the transmission of electrical energy from a static arrangement to a rotating arrangement, comprising a stationary element and an element that is rotatable in relation to the stationary element, wherein the stationary element comprises a primary circuit with two input terminals, which are connected to each other by means of a second coil with M turns, wherein the first and second coils are arranged in such a way that, when an a.c. voltage is applied to the input terminals, the magnetic field generated by the first coil induces an a.c. voltage in the second coil.
    Type: Application
    Filed: May 29, 2012
    Publication date: March 27, 2014
    Applicant: HERMANN ULTRASCHALLTECHNIK GMBH & CO. KG
    Inventor: Dieter Jurzitza
  • Publication number: 20140020816
    Abstract: Invention relating to a method for controlling an ultrasonic machining, in which an ultrasonic vibration is transmitted via a sonotrode into the material to be machined. During the first machining interval, a first welding variable of the group S, consisting of the frequency f and the amplitude ü of the ultrasonic vibration, the force F, which the sonotrode exerts on the material to be machined, the power P, which the generator delivers, and the speed v, with which the sonotrode is moved in the direction of the material to be machined, is kept constant until a first target variable of the group Z adopts a predetermined value. During an adjoining second machining interval, a second welding variable of the group S is kept constant until a second target variable of the group Z adopts a predetermined value, wherein the first and the second target value differ.
    Type: Application
    Filed: July 12, 2013
    Publication date: January 23, 2014
    Applicant: Hermann Ultraschalltechnik GmbH & Co., KG
    Inventors: Thomas Herrmann, Volker Aust
  • Publication number: 20130306219
    Abstract: The invention relates to a method for producing a transverse sealing seam in a tubular bag (6) having a longitudinal sealing seam (5), wherein the tubular bag (6) is passed through between a sonotrode (1) and an anvil (2) and, in order to produce the transverse sealing seam, the sonotrode (1) and the anvil (2) are moved toward each other so that a welding force is applied to the tubular bag (6). In order to provide a method and transverse sealing device with which the stated disadvantages can be overcome at least reduced, the longitudinal sealing seam (5) is moved through a gap (8, 7?) formed in the sonotrode (1) or the counter tool (2) at least during the application of the welding force.
    Type: Application
    Filed: February 9, 2012
    Publication date: November 21, 2013
    Applicant: HERRMANN ULTRASCHALLTECHNIK GMBH & CO. KG
    Inventors: Thomas Herrmann, Franz Bobschek-Born
  • Patent number: 8557071
    Abstract: The present invention relates to an ultrasound welding device for welding material webs, for example, films, having an anvil (1) with an anvil welding surface, and a sonotrode (2) with a sonotrode welding surface, wherein the anvil is movable relative to the sonotrode. In order to provide an ultrasound welding device that reacts promptly to changes in material thickness and properties of the material to be welded, the invention proposes to provide a counterforce generator, which exerts a counterforce on the anvil in the direction of the sonotrode, if the anvil is moved out of a reference position away from the sonotrode.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: October 15, 2013
    Assignee: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventor: Klaus Weiler
  • Publication number: 20130213198
    Abstract: A device for processing workpieces using ultrasound has an ultrasound oscillating structure and an anvil with a counter tool, wherein the ultrasound oscillating structure has an ultrasound sonotrode which can be moved by a carriage in the axial direction thereof and in the direction of the counter tool. A force storage is provided for the counter tool to urge the counter tool with a force towards the ultrasound sonotrode.
    Type: Application
    Filed: March 26, 2013
    Publication date: August 22, 2013
    Applicant: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventor: Herrmann Ultraschalltechnik GmbH & Co. KG
  • Patent number: 8468782
    Abstract: The invention relates to a method of producing a bottle-like or tube-like container, especially a tubular pouch (10), having a tubular pouch body (20) and a sealed-in end (30), such as, for example, a base, especially a stand-up base, and optionally a sealed-in top part and/or shoulder part, wherein at least the base (30) and, where applicable, the top part and/or the shoulder part is introduced into the tubular pouch body (20), the tubular pouch body (20) being stretched, especially expanded, at least in the region of introduction, by a predetermined amount before and/or during introduction of the base (30) and, where applicable, of the top part and/or the shoulder part. The invention relates also to a tubular pouch so produced.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: June 25, 2013
    Assignee: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventors: Andreas Michalsky, Jürgen Pfrommer
  • Publication number: 20130028675
    Abstract: The present invention concerns a tool head comprising a machine connection for connecting the tool head to a machine tool, and a tool 5 portion which either has at least one geometrically defined cutting edge or has a receiving means for a tool insert having a geometrically defined cutting edge. To provide a tool head, like a drilling head, and a method with which highly precise machining is possible with very high feed speeds and good surface quality without the cutting edge being exposed to 10 a high rate of wear, it is proposed that there is a converter for converting electrical AC voltage into a mechanical vibration, wherein the converter is arranged, designed and connected to the tool portion so that the unit comprising the converter and the tool portion and possibly a tool insert 15 received in the receiving means can be excited to perform an ultrasonic vibration.
    Type: Application
    Filed: July 26, 2012
    Publication date: January 31, 2013
    Applicant: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventors: Ulrich Vogler, Francois Brouet, Thorsten Fausta
  • Patent number: 8216408
    Abstract: The invention concerns an ultrasonic sonotrode having a sealing surface which is intended to come into contact with the material to be processed. To provide an ultrasonic sonotrode, an ultrasonic sealing apparatus and a method of ultrasonic processing, which avoids complicated and expensive positioning of the sonotrode and which nonetheless ensures uniform good quality for the weld seam, it is proposed according to the invention that the sealing surface is of a two-part configuration and the two sealing surface parts are formed by two mutually facing sealing surface portions.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: July 10, 2012
    Assignee: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventors: Ulrich Vogler, Hartmut Möglich, Thomas Wipfler
  • Publication number: 20120118476
    Abstract: The present invention relates to an ultrasound welding device for welding material webs, for example, films, having an anvil (1) with an anvil welding surface, and a sonotrode (2) with a sonotrode welding surface, wherein the anvil is movable relative to the sonotrode.
    Type: Application
    Filed: April 26, 2010
    Publication date: May 17, 2012
    Applicant: HERRMANN ULTRASCHALLTECHNIK GMBH & CO. KG
    Inventor: Klaus Weiler
  • Publication number: 20120012258
    Abstract: The present invention concerns a sonotrode for a device for continuously processing material webs by means of ultrasound. To provide a sonotrode and an ultrasonic processing device having a sonotrode which is simple to produce and ensures reliable transverse sealing seam production, wherein the energy consumption of the sonotrode is low and the sonotrode also has a high level of rotational truth accuracy and adequate stiffness, it is proposed according to the invention that the sonotrode comprises a substantially roller-shaped core and at least two bars, wherein the bars extend in the direction of the core axis and each have a sealing surface facing away from the roller-shaped core.
    Type: Application
    Filed: May 27, 2010
    Publication date: January 19, 2012
    Applicant: HERRMANN ULTRASCHALLTECHNIK GMBH & CO. KG
    Inventor: Ulrich Vogler
  • Patent number: 8096339
    Abstract: An ultrasonic welding tool with fluid drive, wherein the ultrasonic welding tool (2) is connected by way of a piston rod (3) to a working piston (5) which is guided in a housing (4) of the drive, wherein the working piston (5) sub-divides the drive housing (4) into a primary chamber (6) and a secondary chamber (7), wherein each of the chambers is able to communicate by way of a valve (16) with a fluidized pressure source, wherein at least one sensor (18, 19) is provided for detecting a physical property of the fluid drive which sensor emits an actual signal which is in relationship with the physical property detected and which via a control circuit controls the two valves in such a way that the physical property detected follows a reference value profile.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: January 17, 2012
    Assignee: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventor: Volker Aust
  • Patent number: 8047420
    Abstract: A method for production of a welded connection between at least one first electrical conductor and at least one second electrical conductor, in which the conductors are brought into a compression chamber enclosed by delimitation elements and welded therein by an ultrasound welding device, one of the delimitation elements forming a sonotrode which may be subjected to ultrasound vibration. According to the invention, in order to connect a first conductor in the desired circumference with second conductors, where the total cross-section of the second conductors for connection to the first conductor can optionally be greater than the usual cross-section with the ultrasound device used, the first conductor is welded sequentially with two or more second conductors in the compression chamber.
    Type: Grant
    Filed: October 7, 2006
    Date of Patent: November 1, 2011
    Assignee: Ultraschalltechnik GmbH
    Inventor: Dieter Stroh
  • Patent number: 7959054
    Abstract: A device for processing workpieces using ultrasound, comprising an ultrasound sonotrode and an anvil, wherein a workpiece is processed between the ultrasound sonotrode and the anvil, the ultrasound sonotrode having a recess with open edges in the axial direction and a die is disposed in the recess in the direction towards the workpiece and/or the anvil, the die being displaceable between a rest position retracted into the ultrasound sonotrode and an operating position in which it partially projects out of the ultrasound sonotrode.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: June 14, 2011
    Assignee: Hermann Ultraschalltechnik GmbH
    Inventor: Mike Konieczka