For printed circuit board what is mounting flexibility?

Mounting flexibility, also known as mountingflexibility, flexibility.

In the SMT industry, although people are familiar with themounting flexibility, but what is the mounting flexibility? What is the standard for flexible mountingmachines? Mounting accuracy, mountingspeed, and mountingcapabilities can all be quantified into specific data. Can placement flexibility be quantified?

Obviously, flexibility is not same as accuracyand speed, and it cannot be accurately quantified. Flexibility is similar to advanced and innovative features. It is just a conceptual, dynamic, and relative description of device characterization.

From the actual production requirements, the mountingflexibility should include the following aspects.

1.Ability to adapt to different PCBA products

This one is the basic requirement for machine flexibility. The "adaptation" here refers to a type of mountingmachine that can face a variety of products, rather than the traditional combination of high-speed machine and multi-function machine.

Different PCBA products may use different types, sizes, thicknesses, materials, and surfacesPCB. Therefore, the PCB transfer, clamping, support, and reference identification capabilities of the mountingmachine are different. At the same time, there may be different requirements for mountingmode, detection method and mountingforce. The flexible mountingmachine should be able to adapt to the different PCB variations without the need for a user to change the model.

1. 

Different PCBA products contain different components. The number and specific gravity of the chip components, the types of small chip components (0201 and 0 005), and the size, type and pitch of the IC package, the type, size and surface properties of the profiled components are all raise different requirements for the mounting ability ofthe mountingmachine. Flexible mountingmachines should be able to adapt to these different component variations without requiring the user to change models or additional investments.

2. Ability to balance accuracy and speed

This one is also a basic requirement for machine flexibility. Often in the characteristics of the mountingmachine, there is a contradiction between flexibility and speed, flexibility and precision, and speed and precision. The flexibility of mounting is often at the cost of speed, and the improvement of precision can not be achieved without loss of speed. Increasing flexibility and precision are not compatible. However, modern assembly technology is to challenge these contradictions, and it is required to balance the accuracy and speed in the process of flexibility, so that the three can be paralleled, achieve dynamic balance, and achieve optimal cooperation.

It is gratifying that due to the continuous innovation of modern technology, with the development of equipment manufacturing technology, the above contradictions are gradually being solved, and to some extent, flexiblemountingmachines with high precision and high speed can be realized.

3.Rapid production conversion

The basic purpose of flexibility is to achieve high-efficiency production in small batches and multiple varieties, so there is a relatively high requirement for the fastest production conversion and set-up time. Fast conversion is currently achieved through flexible configuration of quick-change component systems and advanced open-source, off-line programmable high-efficiency mountingmachine software systems.For the newly launched SMT machine, the theoretical conversion time has been shortened to 30 ~ 15 min. Of course, it is the same asthe theoretical mounting speed. The data provided by these equipment suppliers are only for comparison and reference.

4.Ability to upgrade

This one is also an increased requirementforthe flexibility machine.Mounting deviceas production investment, it is inevitable that the mountingequipment is expected to exert maximum benefits. However, in today's ever-changing market, an investment company is required to accurately estimate the direction and type of products in the future. Obviously, it is not the capability that every enterprise own. Therefore, the mountingmachine is required to have flexibility in the following cases.

When there is a large change in production scale (usually expanding capacity), it is possible to adapt to new requirements by adding modules or replacing parts instead of repurchasing equipment. For example, the simplest configuration is a 3-archmountingmachine with 6 mountingheads with a mountingspeed of 30 000 cph, which can be gradually increased by 5,000 cph by adding modules.

When the product type changes greatly, it can adapt to the new product mountingrequirements by adding modules or replacing some parts. For example, a new mountingmachine can be mounted in a 30 mm x 30 mm IC package that can be expanded to a 50mm x 50mm mounting range with a special mountinghead.

Upgrades can be achieved at a lower cost when new technologies are introduced in the mountingmachine equipment manufacturing.