Servo metering valve

Abstract

The invention belongs to the technical field of dispensing, and particularly relates to a servo metering valve which comprises a servo motor. A speed reducer is fixedly mounted on one side of the servo motor, a miniature gear pump is fixedly mounted on the side, away from the servo motor, of the speed reducer, a first input shaft and a first output shaft are arranged on the speed reducer, and a second output shaft is arranged on the servo motor. The second output shaft and the first input shaft are fixedly connected together, a third input shaft is arranged on the miniature gear pump, the first output shaft and the third input shaft are fixedly connected together, and a transfer plate is fixedly installed on the side, away from a fixed vertical plate, of the miniature gear pump. According to the servo metering valve, a front proportioning metering mode is adopted, the device is directly installed at the tail end of equipment and directly connected with a dispensing valve integrally, hose transition does not exist in the middle, the influence of a pipeline system on metering precision is thoroughly eliminated, and the influence of viscosity, temperature, pipeline length and gun stopping interval time is avoided.

Description

technical field [0001] The invention relates to the field of dispensing technology, in particular to a servo metering valve. Background technique [0002] In the existing single-component glue quantitative gluing system, the quantitative mechanism of most of the gluing equipment of traditional manufacturers adopts a fixed plunger metering cylinder or a gear metering pump, using a motor as a power source to push out the glue, and then passes through a certain length of glue. The hose connects to a dispensing valve at the end, where it is applied to the workpiece. [0003] However, after modern technology adopts robotic glue application and high-viscosity glue, because the viscosity of the glue is very sensitive to temperature changes and the deviation is large, the delivery hose is soft and long, and the filling amount error caused by the deformation of the hose itself increases. This is almost fatal for a single medium and small dose of glue application, and due to the exis...

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Problems solved by technology

[0003] However, after modern technology adopts robotic glue application and high-viscosity glue, because the viscosity of the glue is very sensitive to temperature changes and the deviation is large, the delivery hose is soft and long, and the filling amount error caused by the deformation of the hose itself increases. This is almost fatal for a single medium and small dose of glue application, and due to the existence of the rubber hose, the pressure of the quantitative mechanism needs to be transmitted to the end dispensing valve through the hose. The pressure is released instantaneously during the valve opening process, which may easily cause uneven glue patterns In the case of anticlimactic conditions, the accuracy of glue application and the reliability of repetition cannot be guaranteed, and it is completely unable to adapt to the requirements of modern technological processes. Therefore, a servo metering valve is proposed

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