Device for an ultrasonic welding of a workpiece, and method for operating such a device

EP4504497A1Pending Publication Date: 2025-02-12HERRMANN ULTRACHALLTECHNIK GMBH & CO KG
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Patent Information

Application Number
EP2023716772
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-04-07
Filing Date
2023-03-23
Publication Date
2025-02-12

AI Technical Summary

Technical Problem

Ultrasonic welding devices face challenges in optimizing cycle time and welding accuracy due to the need for manual repositioning and long travel distances required for interchangeable sonotrodes and anvils, leading to increased cycle times and reduced efficiency.

Method used

The device incorporates two independent carriage drives with a control unit, allowing for automated movement of the welding unit and sonotrode, enabling precise adaptation to different workpieces and sonotrodes, and includes features like force sensors and displacement sensors for optimized welding processes.

Benefits of technology

This solution significantly reduces cycle times and improves welding accuracy by enabling automated and precise movement of the welding unit, allowing for faster processing and better adaptation to various workpieces, while minimizing wear on drive units through clamping devices and optimized force control.

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Abstract

The invention relates to a device for an ultrasonic welding of a workpiece (100), comprising a machine stand (20), a welding unit (50) which has a sonotrode (55), and an adjusting slide (30) which is connected to the machine stand (20) and which supports the welding unit (50) and can be moved in an advancing direction (Z) between a rear position and a front position relative to the machine stand (20). A processing slide (40) is provided which is connected to the welding unit (50) and the adjusting slide (30) and which can be moved together with the welding unit (50) between a starting position and an end position relative to the adjusting slide (30) in the advancing direction (Z), wherein a processing slide drive is provided by means of which the processing slide (40) can be moved relative to the adjusting slide (30) in the advancing direction (Z). In order to improve the cycle time and the welding precision, the invention proposes an adjusting slide drive by means of which the adjusting slide (30) can be moved relative to the machine stand (20) in the advancing direction (Z).
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