Mounting flexibility, also known as placement flexibility, flexibility.
In the pcb industry, although people are familiar with the flexibility of placement, what is the flexibility of placement? What is the standard for flexible placement machines? Mounting accuracy, placement speed, and placement capabilities can all be quantified into specific data. Can placement flexibility be quantified?
Obviously, flexibility is not accurate and accurate, 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 placement flexibility 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 placement machine 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 PCBs of different types, sizes, thicknesses, materials, and surfaces. Therefore, the PCB transfer, clamping, support, and reference identification capabilities of the placement machine are different, and may be different. There are different requirements for patch mode, detection method and placement force. The flexible placement machine should be able to adapt to the different PCB variations without the need for a user to change the model.
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 attached to the placement machine. The ability to install has different requirements. Flexible placement machines 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 placement machine, there is a contradiction between flexibility and speed, flexibility and precision, and speed and precision. Mounting flexibility often comes at the expense of speed, and accuracy cannot be lost without losing speed. Flexibility and accuracy are not safe. 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 not 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, flexible placement machines 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 placement machine software systems. With the new placement machine, the theoretical conversion time has been shortened to 30 to 15 minutes. Of course, like the theoretical placement speed, the data given by these equipment suppliers is only for comparison and reference.
(4) Ability to upgrade
This one is also an increase in the flexibility of the machine. As a production investment, it is inevitable that the placement equipment 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 has. Therefore, the placement machine 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-scene placement machine with 6 placement heads with a placement speed of 30 000 cph, which can be gradually increased by 5,000 cph by adding modules.
• Adapt to new product placement requirements by adding modules or replacing parts when there is a large change in product type. For example, a new placement machine 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 placement head.
• Upgrades can be achieved at a lower cost when new technologies are introduced into the placement machine equipment manufacturing.
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