Electronics Forum | Mon Apr 26 15:04:14 EDT 2004 | pjc
You are correct in understanding that the vision system comes into play for subsequent boards- to align them. Yes- if you missalign the first board and set the cameras to that board, all subsequet boards will not be aligned. Mylar is a thin polyester
Electronics Forum | Mon Apr 26 08:15:37 EDT 2004 | pjc
MPM uses a one-print-Mylar system, as do other printer mfrs. In this system there is a Mylar sheet attached to a frame that is secured over the printer table with the board on it. You print onto the Mylar. The table X-Y-theta manual adjustments are u
Electronics Forum | Thu Apr 29 14:41:12 EDT 2004 | pjc
OK if the paper is transparent and you can adjust the table X-Y-Theta under the paper- without moving the paper - the align with the solder lands on the board. If you have a DEK or MPM machine, the Mylar frame is like $300. I belive other printer mfr
Electronics Forum | Thu Apr 29 10:49:05 EDT 2004 | pjc
Yes, using an illuminated magnifing glass helps. How well your board fixuring is on the table will effect print alignment on other boards loaded. 0.5mm & 0.4mm will require very good fixuring, like you can get with tooling pins if the board has non-p
Electronics Forum | Thu Apr 29 16:58:00 EDT 2004 | pjc
You should be able to get a one-print Mylar frame for the SMTech 90 machine from SigmaPrint, http://www.sigmaprint.co.uk Yes, with vision you store images of two features such as solder lands or fidicial marks from opposite corners of the board. With
Electronics Forum | Thu Apr 15 16:13:13 EDT 2004 | pjc
Best recommendation is to compare the two machines with your boards and stencils. Either vendor should be able to arrange for a �test drive� at one of their demonstration facilities or at a local friendly customer. I�m afraid that your request for �o
Electronics Forum | Wed Aug 18 21:10:23 EDT 1999 | se
| | | Hi, | | | I'd like to ask some tips about the merits and shortcomings o | | | of both screen printer and stencil printer. For small quantity and highly mixed usage, which type of printer is suitable to our | | | application? | | | The board
Electronics Forum | Tue Aug 04 13:45:03 EDT 2020 | oxygensmd
There are one value for thickness during PCB-teach function which is the PCB thickness. The other one is the camera focus in machine option but it is a dangerous function because the camera focus is adjusted by raising/lowering table.
Electronics Forum | Wed Aug 05 06:34:33 EDT 2020 | oxygensmd
Yes if you adjust the thickness to be thin than the machine raise the PCB more to the stencil - than the foil have better tension but it string out faster.
Electronics Forum | Thu Aug 13 19:23:06 EDT 2020 | kojotssss
Call +4 (Christian) Ekra screen printer specialist.
