SMT Technology-SMT Equipment Facilitator

Monday, December 4, 2017

Frequently asked questions for Placement Machine

Frequently asked questions for Placement Machine

We've been using contractors for circuit board prototyping and assembly. What makes you so sure we can do these tasks in-house with no previous experience?

Many companies have seen a major decrease in PCB production expenses by bringing their circuit board prototyping and assembly in-house. Quicker turn-around, better quality control and faster test and implementation of engineering changes are added advantages.

Can anticipated savings from building boards in-house be realistically calculated? If so, how?

If you are presently outsourcing PCB assembly, your invoices should reveal cost-per-board assembly. In-house production costs can be estimated by totaling costs of materials (raw boards), components and labor. For a truer perspective, utilities and two-year equipment amortization should also be factored in.

Where can we get a quick education on circuit board assembly?

The basic technology is not all that complicated. Access this link for a 5-minute presentation on the basics of circuit board assembly. You'll easily grasp the role of each machine in the assembly process.

How much dedicated floor space is required for a pick and place machine?
The dimensions of each machine are usually found in manufacturers' specifications.

Just total the combined square footage of all machines, plus figure at least an additional 3 sq. ft. width around the entire perimeter of your assembly line to allow for feeders and operator access. If future equipment purchases are contemplated, it would be wise to also allocate this space at startup.

What do you figure our upfront costs—including equipment—will be?

Our Buyers Guide will be of major help in determining costs of pick and place machine. For stencil printer and reflow oven estimates, we recommend accessing websites of reliable equipment providers, such as www.joysmt.com.

Will this move increase our manufacturing payroll?

Possibly not, since an existing non-experienced employee or two can be trained to program and operate PCB production equipment. Your equipment vendor should provide onsite training and stay until your people are at ease with his machines.

How long will it take us to be up and running?

Once the equipment is installed and operators trained, it should take no more than two or three weeks to be in production. You will need this additional time to acquire bare boards, stencil(s) and component inventory.

Other than price, what criteria should be used for selecting an equipment supplier?
First, ask for and do contact a few of the prospective vendor's customers. Find out their experience with the machine(s) and if the location is convenient to you, arrange a visit so you can see the equipment in operation. Above all, be certain the machines you are considering will build your product effectively. Allow room for growth to protect your product investment. This is especially important if your product and component mix will change or production targets expand.

What is SMT production line

What is SMT production line

SMT is the traditional electronic components compressed into a volume of only a few tenths of the device directly to the surface assembly components paste, printed on the printed circuit board surface location of the assembly technology. Compared with the traditional process, SMT has high density, high reliability, low cost, miniaturization, sound field automation and other five characteristics.

Types of SMT production lines
SMT production line can be divided into two types, according to the degree of automation can be divided into automatic production lines and semi-automatic production lines; in accordance with the size of the production line can be divided into large, medium and small production lines.
Automatic production line refers to the entire production line equipment are fully automatic equipment, through the automatic board machine, buffer cable and unloading machine all the production equipment with a production line;
Semi-automatic production line is the main production equipment is not connected or not fully connected, the press is semi-automatic, the need for manual printing or manual loading and unloading PCB.

SMT production line of the main components are: by the surface assembly components, circuit boards, assembly design, assembly process;
The main production equipment, including printing presses, dispensers, placement machines, reflow soldering furnace and wave soldering machine. Auxiliary equipment, testing equipment, repair equipment, cleaning equipment, drying equipment and materials storage equipment.

The importance of SMT testing
SMT inspection is an important step in improving the quality of SMT products, it can improve product quality, and strive to achieve "zero defect."
The cost of assembling to the instrument and finding the fault is several times the cost of finding the fault when assembling the printed circuit board;
And the cost of finding the product after the product is put into the market will be hundreds of times the cost of finding the fault when assembling the printed circuit board.

In order to ensure the quality of SMT products, it is necessary to carry out effective testing, timely detection of defects and failures and repair, thereby effectively reducing the manufacture of products and failures caused by the cost of repair.

ICT tester
ICT is In Circuit Tester English abbreviation, the Chinese meaning is the online tester, is the modern electronic enterprise essential PCBA (Printed Circuit Board Assembly, printed circuit board assembly) production of test equipment.
ICT use, high accuracy of the measurement, the detection of the problem clear, even if the general level of electronic technology workers to deal with the problem of PCBA is also very easy.

The most basic instrument used for electrical testing is the On-Line Tester (ICT), which uses a component-level test method to test each component on the assembled circuit board.
ICT can be divided into needle bed ICT and flying needle ICT.
Flying needle ICT basically only static test, the advantage is no need to make fixture, the program development time is short.
Needle-type ICT can be simulator function and digital device logic function test, high failure rate.

In the SMT production line, the time on behalf of the efficiency.
The use of ICT can greatly improve production efficiency and reduce production costs, online tester detection failure coverage of up to 95%, its reasonable configuration in the production line can be found as soon as possible manufacturing failure and timely maintenance, or timely adjustment of the production process, Effectively reducing the cost of manufacturing defective products and repairing.

JUKI NF ATF CTF FTF series smt feeder of applicable models and differences?|Juki feeder feature

1.NF12, NF16, NF32, NF44, NF56, NF56 is mainly used for the processing of JUKI KE730 KE740 KE750 KE760 placement machine.

2. JUKI ATF feeder is Japan's JUKI manufacturers for KE2070 high-speed placement machine research and development of the new feeder.
As this kind of feeder is easily to use, can be achieved non-stop refueling, waste plastic tape and tape without the need to automatically pulley into the waste box.
ATF feeder launched early there have been frequent cassette phenomenon, waste plastic belt can not be properly exported.
JUKI company to improve this problem, and now the market's ATF feeder has been completely solve the cassette problems.
ATF fly up to AF03HP, AF05HP, AF081E, AF081P and other models.
At present ATF feeder has been developed to AF32MM.

3.JUKI CTF feeder is JUKI company based on KE2050 KE2060 and FX-1 medium speed machine developed the old feeder.
The feeder use convenience, waste plastic belt through the reel tape, tape is automatically drooping into the waste box.
CTF is now the market share of the highest feeder, good reputation and stable quality.
CTF fly up to CF03HP paste 0201 components;
CF05HP is 8 * 2 posted 0402 of the material;
CF081E, CF081P is posted 0603 material.
Now JUKI manufacturer launched CTF upgrade section CTFR.

JUKI CF series feeder

4.TCF feeder is JUKI company from 12MM (including 12MM) above all mechanical feeder collectively.
At present the domestic market is almost all large FTF models. which feeder also because of the stability of the quality of the customer to win a very good reputation.

JUKI FF series feeder

Analysis of smt nozzle Material

Smt nozzle have many various kinds of material, quality and feature is difference, and with advantages & defects,

For this sutiation,Joysmt do a simple comparison, only providing a reference.

1.The feature of Wolfram stee smt nozzle :

it have the advantages of cheap & toughness ,but a defect that tends to whiten

2.Smt ceramic nozzle: The advantages never whiten, the price is not expensive, the disadvantage is easy to

fragmentation.

3. Diamond steel nozzle: The advantages never whiten, and it is difficult to break off, The disadvantage is

expensive.

What's the price of the SMT placement machine?

PCB Placement machine is the most important equipment in SMT line, the SMT machine 's cost is the total 70% production lines, to achieve high speed and precision automatic placement of components of the equipment, is the most important and complex equipment of the production of SMT. The automatic placement machine is the main equipment in the SMT production line. The automatic placement machine has been developed from the early low speed mechanical Mounter to the high-speed optical alignment
Placement machine, and to multi-functional, flexible connection modular development. At present, foreign SMT machine has SONY, SONY (Japan),
Assembleon Anbiang, Siemens SIEMENS (Germany), Panasonic (Japan), Matsushita (Japan), FUJI Fuji YAMAHA YAMAHA (Japan), JUKI (Japan), MIRAE (Korea), SAMSUNG Samsung (Korea), global UNIVERSAL (United States)

Other brands, from looking at the past 10 years, SMT abroad continued to control the market and voice of high-end machine absolutely, the price has been high, Japan has been considerable advantages in the field of machine technology, this is because the Japanese have a very good industrial base and technical accumulation, especially servo motor, high precision guide screw, excellent quality is complete, the short term Chinese domestic manufacturers is difficult to have a big breakthrough, many manufacturers will buy new original machine, including Fuji, Matsushita, SIEMENS's most expensive, ultra high speed machine more than 1 million very common, but for some small and medium-sized circuit board manufacturers, large one-time investment is risky, some of the original second-hand machine can meet the requirements, to provide these small manufacturers a very high price solution Resolution!
High cost secondary placement machine has the following brands (prices according to the number of years and maintenance changes, some brands for reference):
Samsung Samsung Mounter: Samsung CP45:USD12000, CP45FV-NEO price: USD14000, SM421 price: USD30000, SM411 price: USD35000;
YS12 price of YAMAHA YAMAHA, Japan: USD50000-80000;
Japan heavy machine JUKI:2070 price: USD30000-50000; 2080 price: USD40000-90000;
The price of the mobile placement machine is also different according to their application, and the price difference is also compared
In addition, the automatic placement machine is the earliest to foreign automatic placement machine based. The price differentials of these brands are also relatively large. In recent years, the domestic placement machine development is relatively fast, the domestic automatic placement machine brand is also
More, the price difference is also relatively large. Automatic placement machine how much money? The following will be explained by the Beijing British science and technology mounter
The amount of automatic Mounter depends mainly on the following factors.

1, automatic placement machine, how much money to distinguish between domestic or imported mounter?.
Automatic placement machine prices on the whole, imports of automatic placement machine and domestic automatic placement machine has several times the gap, the low-end domestic automatic placement machine in general
About one hundred thousand, high-speed domestic automatic placement machine is generally less than six hundred thousand. Imported automatic placement machine is low-end automatic placement machine, also more automatic than domestic high-speed paste
The price of the film machine is much higher, if it is a high-speed machine, usually USD150000-USD250000.

2, the quality of the automatic placement machine also determines the price of the automatic placement machine:
The quality of the product is closely related to the price, whether it is an automatic placement machine or an automatic placement machine imported
Materials and accessories are made of high quality materials, in addition to quality assurance, then its price is naturally more expensive.

3, automatic placement machine operating mode is different, price differentiation is also relatively large:
Automatic placement machine operation mode can generally be divided into high-speed automatic placement machine, automatic placement machine at the middle speed, multi-function automatic placement machine (commonly known as pan machine) and so on,
According to the automatic placement machine operation mode, its price also has some differences. For example, high-speed SMT machines are generally more automatic than middle speed
The price of the film machine is a little higher.

4, the automatic placement machine is also determined by the number of automatic placement machine brand:
The import of those brands of automatic placement machine, each price is not the same, as well as domestic automatic placement machine brand different prices are not the same.

Frequently quality problems of SMT maching process.

Frequently quality problems of SMT maching process.

1, leading to leakage of patch main factors
1.1, SMT placement process, medium component feeding rack (feeder) feeding is not in place
1.2, SMT placement process, components suction nozzle gas road plug, suction nozzle damage,

suction nozzle height is not correct

1.3, the equipment vacuum, gas road failure, congestion
1.4, the circuit board purchase bad, produce deformation
1.5, there is no solder paste or solder paste on the circuit board
1.6, components quality problems, the thickness of the same species inconsistent
1.7, the patch machine calling program has errors or leaks, or programming, the choice of the

thickness parameters of components is wrong

1.8, because the operation is not standard, such as factors accidentally touch.

2, leading to the SMC resistor chip, flip side, side pieces of the main factors
2.1, components feeding rack (feeder) feeding abnormal
2.2 、 the height of the nozzle is not right
2.3 、 the height of the head is not right
2.4. The size of the loading hole of the component braid is too large, and the component is

turned over by vibration

2.5 the direction of the loose material into the braid is reversed

3, leading to the main component bias
3.1, patch machine programming, components of the X-Y axis coordinates is not correct
3.2, chip suction nozzle reason, so that the suction instability

4, leading to the main components of the patch damage

4.1, the positioning pin is too high, so that the position of the circuit board is too high,

the components are pressed when mounted

4.2, patch machine programming, components of the Z axis coordinates is not correct
4.3. The suction head spring of the mounting head is jammed

How Many Feeder Slots Will You Need?

How Many Feeder Slots Will You Need?

Feeder slots can be one of the most confusing aspects of pick and place machines. A machine that has 64
feeder slots won’t necessarily hold 64 feeders. Feeder slots are designed for 8-mm tape feeders. If you
have larger tape feeders and/or sticks and waffle trays, each feeder will take up two or more feeder slots.

To determine whether a machine has enough capacity for your requirements, you will need to calculate
just how many 8-mm feeder slots you’ll need.

Tape Feeders Slot Requirements
To calculate your feeder slot requirements, first list how many of each tape feeder size you will need.
Then multiply each of those by the number of feeder slots the pick & place manufacturer says each will require.

Tape Feeder Example
For example, if you need 44 8-mm tape feeders and the manufacturer specifications say that each 8-mm
tape feeder requires one feeder slot, you will need 44 feeder slots for your 8-mm tape feeders.
If you also need two 12-mm feeders, and the manufacturer’s specs say that 12-mm tape feeders require
two slots each, you will need an additional four 8-mm tape slots (2 feeders x 2 slots/feeder) for your
12-mm feeders, bringing your total slot requirement to 48.

Stick/Tube Feeder Slot Requirements
Generally, each manufacturer’s stick feeder will hold multiple sticks or tubes, so you’ll first figure
out how many sticks or tubes of components you’ll have, then figure out how many stick feeders you’ll
need in order to accommodate them, based on the number of lanes a stick feeder from that manufacturer
holds. Finally, calculate out how many slots in the feeder base your stick feeder(s) will take up.

Stick Feeder Example
If you have 4 sticks and the available stick feeder holds 10 sticks, you would need one stick feeder. If
the stick feeder requires 9 slots, your total slot requirement, building on the tape feeder example
above, is now 57.

Matrix Trays and Cut Strip Tape Holders
Matrix tray holders and cut strip tape holders are sometimes mounted in feeder slots and sometimes
placed in the board area. If the tray holder for the machine you’re looking at takes up feeder slots,
you’ll need to find out how many and add that your requirement.
If, on the other hand, the matrix tray holder goes in the placement area, this will affect the size of
the PCB/panel that the machine can handle, so be sure to keep that in mind.