Parameter essentials of ultrasonic welding machine

1、 Setting of wave generation time: the specific time shall be determined according to the falling stroke and speed of the ultrasonic mold (welding head), so as to release the ultrasonic wave at the moment before touching the plastic part when the ultrasonic mold (welding head) falls.

2、 Setting of contact time: it is determined according to the pressure of pressing plastic parts and the effect of welding; For example: 1. If there is a "splashed flash" of plastic material at the welding interface, it means that the "welding time" is too long or the pressure is too large, or the "falling stroke adjustment (limit) screw" is adjusted too low; If the welding interface is not melted enough, it happens to be the opposite of the former. 2. If the melting of each section on the welding interface is inconsistent, it indicates that the pressure on each section is different. This may be because the pressure is low and the plastic parts are deformed more. Raise the pressure test, or the "ultrasonic bottom mold" can not make the two halves of the plastic parts completely match. You can use adhesive tape or gasket to pad up the position where the "ultrasonic bottom mold" is not welded enough, Repeat the test to achieve the best welding effect.

3、 Special attention: when the 'welding time' and the 'position of the falling stroke adjustment (limit) screw' are unchanged, adjusting the air pressure value of the air pressure can also change the welding effect. Therefore, in the process of normal use, the air pressure of the air pressure source must be kept stable.

4、 Pressure (cooling) time setting: if the plastic parts are "no deformation", "no internal stress after welding" and "solidification is not very slow", the cooling time value is usually not selected (or only 1 / 5 second).

The trigger shall be advanced, the welding shall not be delayed, and the cooling shall be as short as possible. The welding time [about 0.3 seconds] and holding pressure (cooling time) shall be preliminarily selected, with the exception of slow setting plastic materials.