为了帮助大家更好地保证产品质量，提高生产效率，下面是济南双组份打胶机厂家总结的几点关于双组份打胶机的点胶知识要点。

In order to help everyone better ensure product quality and improve production efficiency, the following are the key points of dispensing knowledge about two-component dispenser summarized by the manufacturer of Jinan two-component dispenser.

1.根据工作经验，胶点的直径应为焊盘间距的一半，粘贴后胶点的直径应为胶点直径的1.5倍。这可确保有足够的胶水来粘合组件，并防止过多的胶水浸渍焊盘。

1. According to work experience, the diameter of the glue point should be half of the pad spacing, and the diameter of the glue point after pasting should be 1.5 times of the glue point diameter. This ensures that there is enough glue to bond the components and prevents excessive glue from dipping the pads.

2.点胶压力背压过大容易造成溢出和胶水过量；如果压力太小，将会有间歇的点胶和泄漏，从而造成缺陷。应根据相同质量的胶水和工作环境温度选择压力。高环境温度会降低胶水的粘度并提高其流动性。在这种情况下根据双组份打胶机知识要点，可以通过降低背压来保证胶水的供应，反之亦然。

2. Excessive back pressure of dispensing pressure may cause overflow and excessive glue; If the pressure is too low, there will be intermittent dispensing and leakage, resulting in defects. The pressure shall be selected according to the glue of the same quality and the working ambient temperature. High ambient temperature will reduce the viscosity of glue and improve its fluidity. In this case, the supply of glue can be ensured by reducing the back pressure according to the knowledge points of the two-component glue dispenser, and vice versa.

3.实际上，针的内径应该是胶水分配点直径的1/2。点胶过程中，点胶针应根据印刷电路板上焊盘的尺寸进行选择:如果焊盘尺寸0805和1206没有不同，可以选择相同的针，但不同尺寸的焊盘应选择不同的针，这样不仅可以保证胶点的质量，还可以提高生产效率。

3. In fact, the inner diameter of the needle should be 1/2 of the diameter of the glue distribution point. In the dispensing process, the dispensing pin should be selected according to the size of the pad on the PCB: if the pad size 0805 and 1206 are not different, the same pin can be selected, but different pins should be selected for pads of different sizes, which can not only ensure the quality of the bonding point, but also improve the production efficiency.

4.针距印刷电路板

4. Needle pitch PCB

不同的双组份打胶机使用不同的针，有些针有一定的停止度。针和印刷电路板之间的距离应在每次工作开始时进行校准，即Z轴高度校准。

Different two-component dispensers use different needles, some of which have a certain degree of stop. The distance between the needle and the printed circuit board shall be calibrated at the beginning of each work, i.e. Z-axis height calibration.

5.胶水温度

5. Glue temperature

一般环氧胶水应储存在0-5℃的冰箱中。使用时应提前半小时取出，使胶水完全符合工作温度。胶水的使用温度应为23℃-25℃；环境温度对胶水的粘度有很大影响。如果温度过低，胶点会变小，并会发生拉丝。环境温度相差5℃将导致分配体积发生50%的变化。因此根据双组份打胶机知识要点，应该控制环境温度，同时，还应保证环境温度，湿度小的胶点容易干燥，影响附着力。

Generally, epoxy glue should be stored in a refrigerator at 0-5 ℃. Take it out half an hour in advance to make the glue fully meet the working temperature. The use temperature of glue shall be 23 ℃ - 25 ℃; The ambient temperature has a great influence on the viscosity of glue. If the temperature is too low, the glue point will become smaller and wire drawing will occur. A difference of 5 ℃ in ambient temperature will result in a 50% change in the distribution volume. Therefore, according to the knowledge points of two-component glue dispenser, the ambient temperature should be controlled, and at the same time, the ambient temperature should also be guaranteed. The glue points with low humidity are easy to dry, affecting the adhesion.

双组份打胶机的操作需要严格按照相关步骤和注意事项来做，避免不规范的操作损坏设备影响点胶效果和危及自身。您要明白这些，关注我们http://www.jntiannuo.com带您了解更多！

The operation of two-component glue dispenser shall be carried out in strict accordance with relevant steps and precautions to avoid non-standard operation damaging the equipment, affecting the dispensing effect and endangering your own safety. You should understand these and pay attention to us http://www.jntiannuo.com Learn more!