Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


pcb laser markers

itamar

#29464

pcb laser markers | 12 July, 2004

hello ! my name is itamar and i need information about pcb laser marking machines. my knowledge in this field is limited and i would be grateful to know the important parameters that one should check before buying such a machine. i got several proposals from different companies that sales this kind of machines but as i wrote i feel i don't have enough knowledge in order to compare between the proposals and to make the most clever and economic decision.

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Stefan

#29466

pcb laser markers | 12 July, 2004

For laser marking you don�t require as powerful lasers then for cutting. A 20 Watt laser diode does already a good job. Because of the safety requirements the laser operates in an enclosure, which means more $$$ if you want to use the laser in line with conveyor. Check out, if the software does that, what you like to do. The laser marker may read a print file and may operate like a printer. Instead of an ink dot, it turns the laser on, line by line. It may take quite a while to print (mark) a barcode this way. Although only in a small area, the laser burns the epoxy board and the odor may not be to everyone's liking or the fumes may be even hazardous. Otherwise, my thumbs up for laser.

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blnorman

#29469

pcb laser markers | 12 July, 2004

We've been using lasers to mark barcodes on our boards for some time now. We use a CO2 laser to burn through the solder mask on most of our boards. The machine is enclosed so the operators aren't exposed to the laser. The laser is also mounted on an XY gantry which allows us to use diffent locations on the PC board for different products.

Recently we started marking some of our aluminum housings with a Nd/YAG laser. More expensive, but needs the power to burn into metal.

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g2garyg2

#29566

pcb laser markers | 19 July, 2004

Laser Marking stations generally accept the product, clamp it in place, then through a motion platform move the product underneath the laser head. Marking is generally conducted with a CO2 laser ranging between 20 to 30 watts. You will loose 20% through the fiber so a 20 watt would have an effective output of 16 watts. Depending upon your application there are a variety of stations out there. Some do just bar codes (1 D and 2D) while others are more capable (text, counter, expiry, logo and more). You may also want to check if the marking station can perform marking on multiple products within a pallet VS a single product. PRO-MATION has a nice one (ELM-700 AYL)

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itamar

#30192

pcb laser markers | 24 August, 2004

hello though more than a month has passed since you replied to my massage i will be more than happy to ask you several questions about the laser marking machine your company uses. my mail is : itamarc@visonic.com many thanks itamar

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