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

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Availability of GRID-LOK

Anthony_B

#7464

Availability of GRID-LOK | 30 July, 2001

According to your web site, "engineering is working on refining a module that will be compatible with lower height systems found in other printers, placement machines, and dispensing equipment. Our list includes the following as of June 2001: MPM Printers with vacuum PCB hold down only, MPM 1500 - 1.54" (39 mm) tooling height, DEK Autoflex and Fine Pitch Autoflex Tables, Universal GSM and GDM platforms, Fuji CP6, QP351, IP3 placement machines, Philips GEM line machines,Siemens S-25"

Can you tell us more about this please? Do you have a demo yet? How is your product different from the others who have tried to create this type of fixture?

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Keith E.

#7468

Availability of GRID-LOK | 30 July, 2001

I am also interested in one of Anthony's questions....How is this different from other "similar" products. After having some experience with similar technology, I ask.... 1. How does your initial set-up address the fact that you are conforming to a PCB which has already gone through re-flow, which, therefore, already has some warp in it? Does the grid-lock not simply conform to the warp - which would seem to defeat the purpose? 2. During some set-ups, you are likely to have a pin which comes very close to a component, yet is still allowed to extend to the board surface. Now let's say the next PCB conveyed in place has the same component skewed a bit, just 10 or 20 mils or so, into the path of the now fully extended pin. How do you address this? 3. Are stuck pins and or drifting of pin positions ever an issue?

Thanks,

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#7475

Availability of GRID-LOK | 30 July, 2001

1. The grid-lok technology affords itself the flexibility to come in a variety of heights. The list of machines given are customers we are working with currently. Please contact me offline at jhinerman@ovationproducts.net if you have a specific application that you would like to discuss.

For example, we have a plug-in grid that bolts to the Fuji CP-6 table, and module strips for the GDM and Philips lines

2. We do have a demonstration. Video will be up on the website shortly, and if you email me I can send you a CD-ROM. We do offer demonstrations at our facility or yours. Just give us a call or send a message.

3. How is the product different? -All of our pins lock independently, giving you the freedom to lower individual pins -The locking force of Grid-lok is 5 grams, as compared to 100 grams for a known competing system. Grid-lok's no seal system is self-regulating and does not build up pressure -No setup fixture is required for most products -The Grid-lok is a completely pnuematic system, with no fluids other than air

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#7476

Availability of GRID-LOK | 30 July, 2001

1. Realizing not all PCBs will be warped, but for those that are, the tooling can be set when the board is in contact with the stencil, which will take out some warp. On an MPM, the vacuum box helps to hold the board flat

If the warp is more severe, or on placement machines, a setting plate can be used. If you have board sag, the pnuematic setup force can be increased to put more force on the board once the pins come in contact with it.

How do you currently handle warp, and how much do you see?

2. The compliance of the cap would take care of small components that would be likely to skew in such a manner as you described. The cap is compliant on its edges, with a diameter of .250". The pin is 0.125", giving a 'doughnut' of 0.0625" If the component had a low enough height, no defects would be seen, as it would 'sink' into the edge of the cap. If the height of the component is likely to be a concern, the pin could be lowered away to prevent further defects.

Grid-lok pins are independently, mechanically locked in place. They do not move once locked, unless lowered by purpose, which they can be.

Pins would become stuck if mechanically damaged or material was forced into the bore. We do not see pins sticking in normal production currently. We offer a warranty and service agreement on module performance.

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Carlton F.

#7478

Availability of GRID-LOK | 30 July, 2001

You mentioned a few specific machines that this technology is working with now. Which have had the best results? Which have experienced problems and what were they? What changes are planned for the ones in current use if any?

Thanks

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#7563

Availability of GRID-LOK | 3 August, 2001

This technology currently works with stencil printers, placement machines, and dispensing equipment with equal success. Not all are commercially available yet.

The placement machines with a moving table and weight resrtrictions are more of a challenge, but modules can be developed to overcome these difficulties

No changes are currently being planned, but active discussions are being conducted to add features that particular customers desire.

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SP700avi inline stencil printer