智能音箱点胶机AB点胶机

智能音箱用AB胶点，我来介绍下AB阀的情况

6.4.1 glue hanging or no glue out of nozzle

 1. The impact force is too small (increase need life)

2. The falling speed of the striker is too slow (reduce falling)

3. The air pressure is not enough. The thicker the glue, the greater the air pressure (increase the air pressure)

4. Increase the dispensing speed (decrease the delay)

5. There is a gap between the nozzle and the striker, which causes the nozzle to overflow. It can be compensated by setting the correction deviation value or manually rotating the nozzle adjusting nut (rotating the nozzle nut clockwise, generally not more than half a turn).

 6.4.2 scattered points (often appear in glue with low viscosity)

 Ø the impact force is too large, so it is necessary to reduce the stroke of the striker, (reduce needlelife)

Ø the falling time is too fast, (adding falling)

Ø the nozzle is too far from the product, and the dispensing distance should be kept at 1-3mm

Ø the viscosity of the glue is too low, the surface tension of the glue is too small after impact, and the scattered points are not smooth. Reduce the heating temperature or increase the curing conditions of the glue

6.5 precautions for hot melt adhesive

Ø the heating temperature shall not be too high, which will cause softening and deformation of the rubber barrel. Generally, the set temperature of hot melt glue is 110-120 degrees (rubber barrel 110-120, nozzle 120-170)

Ø during disassembly and maintenance of the injection valve, it is not allowed to wait for the temperature of the flow channel to decrease before cleaning. It must be cleaned immediately after disassembly. It will be difficult to handle after the hot melt adhesive is cured

Ø the air cooling of the valve body must be turned on (the inlet and outlet pressure of the cooling gas is about 0.015mbar) to ensure that the temperature of the valve body does not exceed 40 (error 502 is reported when the temperature is too high)

Ø the air pressure shall not exceed 0.3mbar to prevent the rubber cylinder from bursting under pressure overload

Ø when the machine is shut down for more than 12 hours and is not used, it is recommended to clean the injection valve (or fill it with paraffin, and clean it every 3-5 days)

Ø it is not allowed to spray the secondary heated glue or the glue that exceeds the use time (generally, the glue is easy to hang if the glue exceeds 6 hours, and the glue is easy to hang if the amount of glue in the hose is too small)

6.4.1　喷嘴挂胶或者不出胶

1.撞击力太小(增加Needle Life)

2.撞针下降速度太慢(减小Falling)

3.气压不够，越稠胶水，需要气压值越大(增大气压)

4.增加出胶速度(调小Delay)

5.喷嘴与撞针之间有间隙，造成喷嘴溢胶，可通过设置校正偏差值或者手动旋转喷嘴调整螺母补偿(顺时针旋转喷嘴螺母，一般不超过半圈)。

6.4.2　散点（常出现在黏度较低胶水）

Ø撞击力太大，需要降低撞针行程，（减少 Needlelife）

Ø 下降时间太快，（增加 Falling）

Ø喷嘴离产品距离太远，点胶距离保持在 1-3 毫米

Ø胶水黏度过低，撞击后胶水表面张力过小散点不圆滑，降低加热温度或者增加胶水固化条件

6.5　热熔胶注意事项

Ø加热温度不可过高，温度过高会造成胶桶软化变形，一般热熔胶设定温度为 110-120 度（胶桶 110-120，碰嘴 120-170）

Ø喷射阀拆卸维护时，不能等流道温度降低再清洗，必须拆卸下来后立即清洗，热熔胶固化后将很难处理

Ø阀体空气冷却必须开启（冷却气体上进下出压力，气力 0.015mbar 左右），保证阀体温度不超过 40（温度过高报错 502）

Ø气压不能超过 0.3mbar，避免胶筒承受压力过载爆开

Ø超过 12 小时停机不使用时，建议把喷射阀清洗干净（或者填充石蜡，填充石蜡间隔 3-5 天清洗一次）

Ø不能喷射二次加热的胶水或者超过使用时间的胶水（通常胶水超过 6 小时容易挂胶，胶管胶量过少容易挂胶）