Archive for the ‘Metal Dome Arrays’ Category

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THE IMPORTANCE OF VENTING METAL DOME ARRAY

Thursday, March 9th, 2017

The movement of air in and out from under metal dome array is called “venting” and it is important to have so the snap dome functions properly. Lack of venting between domes can cause adverse effects on the feel and function of the switch.

Venting metal dome array is crucial in order for snap dome to feel the way it was intended. There are a variety of ways to vent a metal dome:
1. Venting betwwen snap domes under the array;
2. Venting on the top;
3. The air hole on the PCB.

If you have any further questions for the dome array, please contact with us.

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Metal dome array burr caused reasons and solutions

Monday, June 23rd, 2014

When we make the metal dome array by mold, the burrs will be found in the production process, then why do it’s happened, and what can we do to solve it?

Caused reasons and solutions as below:
1. The mold for outline is not level – adjust mold balance;
2. The outline mold is not sharp  – to do repair again for mold;
3. The large gap between the mold – according to engineering specifications gap to adjust;
4. The material is too thinner – using the appropriate thickness of the material.

For unqualified products, we are not allow to delivery from our factory, we have a strict quality management system to ensure the quality of our metal dome arrays. If our products have the quality problems, we will take full responsibility.

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Assembly process of metal dome array

Wednesday, May 14th, 2014

Recently, we have received customers question about the assemly process of metal dome array. How do assemble the metal dome array on the pcb board?

First, dome arrays have attached to the release paper, release paper is just do a supporting role;

Secondly, use tweezers or some other tools to peel off from the release paper;

Finally, stick it on the board with glue layer, pressing a little bit, so it can be very firmly attached to the top of the pcb board.

I think it’s very details of the assembly process of metal dome array, if you want to know more, please contact us anytime.

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Metal dome array with 3M adhesive tape

Saturday, April 26th, 2014

Metal dome array with 3M adhesive tape is to use 3M adhesive tape instead of our normal adhesive tape to make the metal dome array, our company is fully can make.

Metal dome array with 3M adhesive tape is generally required from foreign customers,as the 3M adhesive with higher adhesive, afford the high temperature, and more stable. But the cost is also very higher.We are also have the 3M adhesive in stock, such as the commonly used 3M467, so if you
need the samples, we also can make for you.

Generally 3M adhesive dome array is used for one key dome array, especially four-leg snap domes, because of the higher travel. Normal adhesive maybe may the adheive tape can’t stick firmly.

If you need to make metal dome array with 3M adhesive tape, please contact us, we will provide you with a good solution.

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The five advantages of metal dome array

Friday, April 11th, 2014

Why do we choice the metal dome array as switches? Compare to silicone buttons, and ploy dome, what’s the advantages of the metal dome array?

Metal dome array between is that metal domes sheet between the pcb borad and top panel. The advantages as below:

1. Better click feeling;
2. Assembly more quickly;
3. Lower cost;
4. More easy to replace;
5. Higher life cycles.

With these five advantages, the metal dome arrays are widly use in many electronic products.

If you want to know more about metal dome arrays, please contact us.

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Set up tooling to make metal dome array

Wednesday, March 26th, 2014

Some customers’ dome array with special shape or larger size, then they should be required to set up tooling to make. So today, we will have a look at the details for this way:

The tooling of metal dome array consists: spacer tooling, holes and outline tooling, assembly tooling, three partes. The time is about 5 working days to set up. The reliability and tolerance of this way is much thigher than laser cutting to make dome array. Some customers may worry about the cost to set up tooling, please don’t worry, when your order quantity reach a certain number, we will refund back to you.

CMD Manufacture Co., Ltd. is a professional manufacturer of metal snap domes and dome arrays, if you have any needs, please contact us.

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How to assemble metal dome array on pcb board firmly?

Sunday, February 23rd, 2014

Sometimes we will encounter the metal dome array can’t assemble on pcb board firmly,why do have this phenomenon? Do the adhesive of the dome array is not strong? If not, we should take care of the below points:
1, If there is dust, grease, masonry stains on the PCB board? PCB board must be kept clean;
2, We should peel off the dome array by tooling, such as tweezers;
3, Last,we press it a while on board firmly.

Through the above steps, I think the problem can be solved, metal dome array should be very firmly attached to the top of the circuit board. If you also have the doubts, please contact us anytime.

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Incoming inspection of metal dome array

Monday, February 17th, 2014

Last time we talked about the incoming inspection of snap domes, then today to talk about the incoming inspection of metal dome array. As IQC quality staff should be well known the following test items:

1, Appearance inspection; whether there is dirty and must be kept clean;
2, Check if there have snap dome missed and double snap domes;
3, If it is exactly the same as drawing;
4, if there is EMI printed, pay attention to the printing line is uniform and quality; domestic typically require the EMI less than 3 ohms;
5, others, such as flash, tolerance and so on.

Our company manufacture the high quality of metal dome arrays, which is well known from our customers. If you have the drawing, please send to us to have making.

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How large of the metal dome array can be made by laser cutting?

Friday, December 6th, 2013

With the advent of laser cutting machine, the metal dome array also can be made by it which reduce the production cost and improve production efficiency. So there are many customers choose now. But there has a limit for laser cutting, it’s the how large can be made by it?

The maximum effective area in accordance with current laser cutting machine is: 100mm*120mm we can make. If the size of dome array over this, we would recommend to set up mold, or make it into several parts.

If you still need to know more about metal dome array, please contact us.

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What kind of snap dome is suitable to make metal dome array?

Wednesday, November 27th, 2013

Today we talk about what kind of snap dome is suitable to make metal dome array? Metal dome array is covered with a layer which has attached snap dome (metal dome) under.

Round snap domes are the most commonly used in metal dome array, such as our mobile phone.The cross snap dome is used in the membrane switches, so it’s also can make into metal dome array. Triangle snap dome with legs can’t make into dome array, as it’s with two leg, we can’t assemble it on the dome sheet.

With the current technological development, from digital, mobile phones and other high-tech products being gradually extended to all line,do also have used our metal dome array.

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