Automatic dispensing machine is to pre-point a special glue on the PCB board where the patch is needed to fix the patch components, and then solder through wave soldering after solidification. The dispensing is carried out automatically according to the procedure. 1. Tube-shaped rotating rubber tapping control; General and digital time controller. 2. The micro-touch switch is set on the dispensing pen head, which is easy to operate and can work without air pressure.

　　1. 工作原理：压缩空气送入胶瓶(注射器)，将胶压进进给管中，胶流经以固定时间、特定速度旋转的螺杆。螺杆的旋转在胶剂上形成剪切力，使胶剂沿螺纹流下，螺杆的旋转在胶剂上不断加压，使其从滴胶针嘴流出。

　　1. Working Principle: Compressed air is fed into the rubber bottle (syringe), the rubber is pressed into the feed pipe, and the rubber flows through the screw which rotates at a fixed time and a specific speed. The rotation of the screw forms a shear force on the adhesive, which causes the adhesive to flow down the thread, and the rotation of the screw keeps pressing on the adhesive to make it flow out of the dropping needle nozzle.

　　2. 特点：具有胶点点径无固定限制的灵活性。可通过软件进行调整。但是滴大胶点时，螺杆旋转时间长，会降低整台机器的产量。另外，胶剂的粘度和流动特性会影响其稳定性。

　　2. Characteristic: It has the flexibility of no fixed restriction on the diameter of the adhesive point. It can be adjusted by software. But when dropping large adhesive point, the screw rotates for a long time, which will reduce the output of the whole machine. In addition, the viscosity and flow characteristics of the adhesive will affect its stability.

　　无接触式滴胶泵：

　　Contactless drip pump:

　　1. 工作原理：压缩空气送入胶瓶(注射器)，将胶压进和活塞室相连的进给管中，在此加热，温度受控制，以达到佳的始终如一的粘性。使用一个球座结构，胶剂填充由于球从座中缩回留下的空缺。当球回来时，由于加速产生的力量断开胶剂流，使其从滴胶针嘴喷射出，滴到板上形成胶点。

　　1. Working Principle: Compressed air is fed into the rubber bottle (syringe), the rubber is pressed into the feed pipe connected with the piston chamber, where the temperature is controlled to achieve the best consistency of viscosity. Using a ball seat structure, the glue fills the vacancies left by the ball retracting from the seat. When the ball comes back, due to the acceleration force, the glue flow is disconnected, so that it is ejected from the nozzle of the dropping needle and dripped onto the board to form a glue point.

　　2. 特点：1)、了传统方法产生的胶点拉尾。2)、没有滴胶针的磨损和和其它零件 干涉的问题。3)、无针嘴损坏。4)、无由于基板弯曲和被针嘴损害的报废。

　　2. Features: 1) Eliminate the traditional method of adhesive tailing. 2) No wear and tear of dropping needle and interference with other parts. 3) No pin nozzle damage. 4) No scrap due to the bending of the base plate and the damage of the needle nozzle.