CHMT36VA Vibration Feeder for 8mm tubes

thingiverse

This is a vibration feeder for the Chinese Pick and Place machine CHMT36VA and similar machines. The feeder consists of two blocks: a lower fixed part and an upper vibrating section that holds component tubes. A 3mm thick double stick foam tape was used to join the two halves, providing enough elasticity for a small motor to move the upper section. You will need to experiment to find the right amount of foam tape that holds everything together but also allows the fan to vibrate the upper half. For the motor, a 12V 25mm fan was used and hot-glued with a nut off-center so it vibrates as it turns. This is probably very hard on the bearings, but fans are cheap and easy to replace when they wear out. The block was made a little short on purpose to allow for different tapes and chip heights; you will need to add shims between the machine and the lower block to place chips at the right position for the nozzle. A small PCB placed under the block usually provides the right elevation, but you will need to experiment. Be careful not to elevate the block too much, or it may hit the nozzles (you are on your own if you break your machine). Also make sure the machine does not hit the upper block when finding the HOME position; I had to shave the left side wall of the vibration block to provide some needed clearance. To help chips slide off easily, the top and sides of the feeder tube were shaved so that only the portion under the chip extends all the way to the feeder area. This prevents 3D material from coming into contact with the chips and jamming the slide. The SolidWorks design file is included so you may modify it to suit your tubes. On your machine setup, use feeder numbers 74-79.