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Device for the ultrasonic processing of materials having a trigger apparatus

A technology of ultrasonic processing and triggering device, which is applied in the direction of fluid using vibration, which can solve the problem that closed-loop control system is no longer sufficient.

Active Publication Date: 2017-02-22
HERRMANN ULTRACHALLTECHNIK GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] Since a constant amplitude must be reached at the latest when the next protrusion engages the material, the closed-loop control system described in DE 10 2006 020 417 is no longer adequate due to the increased processing speed

Method used

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  • Device for the ultrasonic processing of materials having a trigger apparatus
  • Device for the ultrasonic processing of materials having a trigger apparatus

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Embodiment Construction

[0034] figure 1 A circuit diagram of an ultrasonic treatment device according to the invention is shown. It has a vibration system 10 comprising a transducer 12 , an amplitude converter 14 , a sonotrode 16 and a counter tool 18 . The material 20 to be processed, for example a material web, is arranged between the welding electrode 16 and the counter tool 18 . The converter 12 is supplied with an alternating voltage by means of an ultrasonic generator (not shown).

[0035] A signal (u) is taken from the vibration system 10 and fed to a closed loop control device 24 via a feedback path 22 . The closed-loop control device 24 has a PID controller 26 . The control device 24 generates a manipulated variable, which is fed to the vibration system 10 and in particular to the converter 12 . The vibration system 10 together with the control device 24 forms a closed-loop controlled, electrical and mechanical vibration circuit 28 . The control device 24 can be integrated in the ultras...

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Abstract

The present invention relates to a device for the ultrasonic processing of materials, which has an ultrasonic processing system, which comprises: an ultrasound generator, a converter (12), a sonotrode (16), and a counter tool (18); wherein the sonotrode (16) and / or the counter tool (18) has a substantially cylindrical sealing surface having at least one elevation (45) and can be rotated such that, during the processing, the elevation (45) rotates about the axis of rotation and comes in contact with the material web (20) during a sealing time, wherein a control apparatus (24) is provided for the ultrasound generator, to which control apparatus a feedback variable from the ultrasound processing system is fed and which control apparatus determines a manipulated variable therefrom and feeds said manipulated variable to the ultrasound generator, wherein a process variable from the processing process is determined and is linked to the manipulated variable determined by the control apparatus (24) before the feeding to the ultrasound generator. In order to provide an improved device for the ultrasonic processing of materials having an ultrasonic processing system, a trigger apparatus (44) is provided, which determines the position of the elevation (45) and is designed to permit or prevent the linking of the process variable to the manipulated variable in accordance with the position determination.

Description

technical field [0001] The invention relates to a device for the ultrasonic treatment of materials, which has an ultrasonic treatment system with a sonotrode, a converter, a welding electrode and a counter tool. Background technique [0002] The sonotrode generates an alternating voltage, which is converted by means of a converter into ultrasonic vibrations whose frequency is matched to the electrode so that the latter is placed in resonance. In order to process the desired material, they are arranged between the welding electrode on the one hand and the counter tool on the other hand. The welding electrode, excited with ultrasonic vibrations, then presses the material against the mating tool and processes the material. [0003] In particular, when processing a web of material, the electrode and / or the counter tool is equipped with a substantially cylindrical sealing surface and rotates about the axis of the cylinder during the processing operation. In this case, the perip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/02B06B3/00B29C65/00B29C65/08
CPCB06B1/0246B06B3/00B06B2201/72B29C65/085B29C65/086B29C65/087B29C66/1122B29C66/43B29C66/83511B29C66/83513B29C66/9221B29C66/92921B29C66/961B29C66/962
Inventor G·格纳德
Owner HERRMANN ULTRACHALLTECHNIK GMBH & CO KG