What are the tips for selecting a dispensing needle? In fact, there are many ways to select the dispensing needle, because it is easy to block the needle. There are many ways to select the dispensing needle. For example, if the glass dispensing machine uses the instant glue, the Teflon needle should be used. Other needles are easy to block. There are many tips to select the dispensing needle head. The selection of needle can be based on the working principle of 3D dispensing.
As the dispensing technology is more and more perfect, the dispensing industry has improved the precision requirements of the 3D dispensing machine, and the selection of dispensing needle has become a concern of the manufacturer Generally speaking, the dispensing accuracy is affected by the dispensing valve. Actually, only half of the people have such idea. The dispensing needle accuracy can also affect the dispensing effect of the product. Why the glass dispensing machine needs to follow the dispensing needle in the dispensing process? In fact, in order to control the dispensing accuracy, the handheld teaching box is used to control the dispensing time of the dispensing valve, so as to control the dispensing amount of the dispensing needle. This is the working principle of the three-axis dispensing control.
If the dispensing needle is not properly selected, the dispensing volume of the 3D dispensing machine and even the product quality cannot be guaranteed. Therefore, when selecting the dispensing needle, it is necessary to select the appropriate dispensing needle according to the glue property, dispensing requirements, dispensing accuracy requirements, and air pressure. Although the handheld teaching box is used to set the dispensing parameters of the 3D dispensing machine, it cannot affect the dispensing accuracy, only the dispensing time can be controlled, and conflicts with the air pressure will cause a lot of dispensing problems, such as glue dripping of the glue valve, glue leakage of the glue valve, and plug of the needle. It is required to operate according to the working principle of 3D dispensing.
The dispensing needle used by the glass dispensing machine can be roughly divided into bayonet dispensing needle, stainless steel dispensing needle, brush dispensing needle, TT oblique dispensing needle, spiral plastic seat dispensing needle cylinder, PP flexible dispensing needle, Teflon dispensing needle, etc. These dispensing needles are manufactured by precision, especially the Teflon dispensing needle adopts the unique manufacturing process, special production method and polishing process, otherwise the glass dispensing machine uses the Teflon needle as one of the main dispensing accessories, and the high-precision process can avoid the occurrence of dispensing problems.
Too narrow diameter of the dispensing needle selected by the 3D dispensing machine will cause the back pressure of the dispensing valve to be affected by the suction, resulting in leakage of the dispensing valve. Too small size of the needle will cause the valve to open and the hose to generate bubbles. The solution to the problem of the needle is simple. Just make the dispensing needle too small, it is a very simple working principle of 3D dispensing. However, selecting the dispensing needle is the same as changing the dispensing needle. How to control the system cannot be used is the same. For example, the glass dispensing machine uses the handheld teaching box as the controller to dispense with instant glue, but does not use the Teflon needle, which will cause the needle. Blockage of.
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