1. Vacuum negative pressure is insufficient
When the suction nozzle to take components, the suction nozzle at a certain negative pressure, the components adsorbed on the suction nozzle. Its determination of whether the suction nozzle picks up components is generally abnormal using negative pressure detection, when the negative pressure sensor detection value within a certain range, the machine that sucks up normal, and vice versa that sucks up bad. In the component suction, vacuum negative pressure should be above 53.33kPa, so that there is enough vacuum to suck the component. If the negative vacuum pressure is insufficient, will not be able to provide sufficient suction to absorb the components, in use, we must often check the negative vacuum pressure, and regularly clean the suction nozzle, but also pay attention to each fitting head of the vacuum filter cartridge contamination, its role is to reach the suction nozzle of the air source for filtration, the pollution of the black should be replaced to ensure that the airflow is unimpeded.
Nozzle wear, poor installation, nozzle deformation, clogging, damage caused by insufficient air pressure, resulting in suction can not afford components, so we must regularly check the degree of wear and tear of the nozzle, the serious to be replaced.
3. SMT feeder
Feeder feeding bad (feeder gear damage), the material belt hole is not stuck in the feeder gear, feeder below the foreign body, card spring wear, pressure belt cover plate, spring and other operating mechanisms to produce deformation, rust damage, etc., resulting in components to suck bad, so to feeder correctly and securely installed, and regular inspection of the feeder, and clean, clean, lubricating oil and other routine maintenance and maintenance. The feeder should be installed correctly and firmly, and the feeder should be inspected regularly, and the feeder should be cleaned, cleaned, lubricated and other routine maintenance.
4. The influence of sucking height
Ideal suction height is the patch machine processing suction nozzle contact to the component surface and then press down 0.05mm, if the depth of the pressure is too large, it will cause the component is pressed into the material slot instead of picking up the material. If a component of the sucking situation is not good, can be appropriate to absorb the height of the upward slightly adjusted, such as 0.05mm. authors in the actual work process has encountered a material table on all the components are bad sucking situation, the solution is the system parameters in the material table picking up the height of the appropriate upward shift a little bit.
5. The procurement of components
Some manufacturers produce chip components packaging quality problems, such as the perforation spacing error, paper tape and plastic film between the viscous force is too large, the size of the material tank is too small, etc. are caused by components to absorb the reasons for the bad.
Zhejiang NeoDen Technology Co., LTD., founded in 2010, is a professional manufacturer specialized in SMT pick and place machine, reflow oven, stencil printing machine, SMT production line and other SMT Products. We have our own R & D team and own factory, taking advantage of our own rich experienced R&D, well trained production, won great reputation from the world wide customers.
We are in a good position not only to supply you high quality pnp machine , but also the excellent after sales service.
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