Power supply system used for ultrasonic welder

A technology of ultrasonic welding and power supply system, applied in the field of ultrasonic welding, can solve the problems of output amplitude stability and continuous adjustability being difficult to meet actual requirements, poor frequency automatic tracking performance, etc., to achieve convenient function expansion, stable output amplitude, fast and accurate tracking

Inactive Publication Date: 2016-06-01
GUANGDONG SUNWILL PRECISING PLASITC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The structure has the above defects, that is, the frequency automatic tracking performance is poor, the output amplitude stability and continuous adjustability are difficult to meet the actual requirements, therefore, it is necessary to make further improvements

Method used

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  • Power supply system used for ultrasonic welder
  • Power supply system used for ultrasonic welder

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Embodiment Construction

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] see figure 1 , This power supply system for ultrasonic welding machine includes a main circuit and a control circuit; it is characterized in that: the main circuit includes a rectifier filter circuit, a power inverter circuit and a high-frequency transformer connected in sequence; the control circuit includes a phase detection circuit Circuit, voltage feedback circuit, current feedback circuit, power control chip, DDS frequency tracking circuit, phase-shifting pulse generating circuit and driving circuit; the phase detection circuit, voltage feedback circuit, current feedback circuit, DDS frequency tracking circuit and phase-shifting pulse The generating circuits are respectively connected with the power supply control chip, and the phase-shifting pulse generating circuit is connected with the power inverter circuit through the driving circuit.

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Abstract

The invention discloses a power supply system used for an ultrasonic welder. The power supply system comprises a main circuit and a control circuit, wherein the main circuit comprises a rectifying filter circuit, a power inverter circuit and a high-frequency transformer which are sequentially connected; the control circuit comprises a phase detecting circuit, a voltage feedback circuit, a current feedback circuit, a power supply control chip, a DDS frequency tracking circuit, a phase-shift pulse generating circuit and a drive circuit; the phase detecting circuit, the voltage feedback circuit, the current feedback circuit, the DDS frequency tracking circuit and the phase-shift pulse generating circuit are separately connected to the power supply control chip; and the phase-shift pulse generating circuit is connected to the power inverter circuit through the drive circuit. The power supply system has the beneficial effects that: a frequency resolution rate reaches 1Hz, and quick and accurate tracking of the resonant frequency of a transducer can be realized; the output voltage and the output current can be continuously adjustable, and the output amplitude of the transducer is stable; and fault diagnosis and protection functions for over-current, over-heating and the like are achieved.

Description

technical field [0001] The invention relates to the field of ultrasonic welding, in particular to a power supply system for an ultrasonic plastic welding machine. Background technique [0002] Ultrasonic plastic welding technology is a new type of processing technology. It does not need to add any adhesives, solvents or fillers. It has fast welding speed, high connection strength and simple operation, which is very suitable for the needs of modern mass production. Therefore, ultrasonic plastic welding technology has been more and more widely used. However, as a key part of ultrasonic welding, the power supply for ultrasonic welding still has the problems of poor frequency automatic tracking performance, output amplitude stability and continuous adjustability in current domestic products that cannot meet actual requirements. [0003] Chinese Patent Document No. CN202275295U disclosed an ultrasonic welding power supply system on June 13, 2012, and specifically disclosed that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/08
CPCB29C65/08B29C66/95
Inventor 黄禹龙仕均丁斌张强徐中
Owner GUANGDONG SUNWILL PRECISING PLASITC CO LTD
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