SMT Stencil Printer Manufacturing Factory

What is an SMT solder paste screen printer machine?

A solder paste printer (SMT printer) is an important equipment in the surface mount technology (SMT) production line, which is used to accurately apply solder paste on the printed circuit board (PCB). The main function of the solder paste printer is to print the solder paste evenly on the pad position of the PCB to prepare for the subsequent electronic component placement work.

How many types of SMT printers are there?

There are three main types of SMT printers: manual printers, semi-automatic printers and fully automatic printers.

Manual printers require manual operation and are suitable for small batch production and sample production.

Semi-automatic printers can be controlled by simple programs and are suitable for medium batch production needs.

Fully automatic printers are the most advanced type, which can automatically complete printing tasks and are suitable for large-scale production.

The main functions of the Stencil Printer

1. Provide solder paste coating: solder paste is an important material in SMT production, used to connect electronic components to the pads of PCB. The solder paste printer evenly applies the solder paste to the pad position of the PCB through the coating device to ensure the stability and reliability of the welding quality.

2.  Achieve high-precision printing: The printing head of the solder paste printer has a high-precision motion control system that can control the coating position and thickness of the solder paste at the millimeter level. This can ensure the accuracy and consistency of the soldering and improve the welding quality between electronic components and PCBs.

3.  Improve production efficiency: The solder paste printer has a high-speed coating function and can quickly complete large-scale printing work. Compared with traditional manual coating, the solder paste printer can greatly improve production efficiency and save labor costs.

4.  Reduce human errors: The solder paste printer can avoid human errors in the manual coating process through automated control. It can ensure the uniform coating of the solder paste and avoid welding problems caused by inconsistent manual operations

5. Improve the working environment: The tin sound printer can effectively reduce the impact of the odor and dust emitted by the solder paste on the operator through the closed structure and suction device, and improve the working environment.

6. Data management and quality control: Solder paste printers are usually equipped with data management and quality control systems, which can record relevant data of each printing process, including the amount of solder paste used, printing position, printing speed, etc. These data can be used for subsequent quality control and process optimization to improve product consistency and stability.

7. Realize special process requirements: Solder paste printers can also realize some special process requirements, such as local coating of solder paste, printing of multi-layer PCBs, etc. These special requirements often require highly precise control and adjustment, and solder paste printers can provide corresponding functions and flexibility.

How to maintain SMT Stencil Printer?

1. Daily cleaning and inspection

1. Clean the surface of the equipment regularly to remove dust and dirt, and keep the equipment clean and dry.

2. Clean the steel mesh template and use a special cleaning fluid or ultrasonic cleaning machine to remove the solder paste remaining in the opening to prevent the dried solder paste from affecting the effect of the next printing.

3. Check whether the scraper is worn or damaged. If necessary, replace the scraper in time and adjust the angle and pressure of the scraper.

4. Check whether the steel plate is worn or damaged, especially after repeated use, to ensure that the steel plate is firmly fixed and not loose.

2. Component maintenance

1. Clean and lubricate the transmission system, transport rails, platforms and other parts to reduce wear and failure rate.

2. Regularly check the key components such as the electrical system, control system, and printing head to ensure that they are in good working condition.

3. Regularly replace wearing parts such as printing heads and scrapers to ensure the printing quality of the equipment.

3. Lubrication and adjustment

1. Regularly lubricate the moving parts of the equipment, use appropriate lubricants, and lubricate according to the requirements of the equipment manual.

2. Check the tension and wear of the chain, and adjust or replace if necessary.

3. Check the pneumatic system, clean the cylinder, solenoid valve and air source to ensure the normal operation of the pneumatic system, and check whether the air pressure is stable and whether there is any leakage.

What are the precautions for SMT printers?

1. When the printed PCB board has no patch, the online storage time cannot exceed 1 hour. When adding solder paste in the middle, the scraper rolling amount shall prevail, which should not be more or less.

2. The equipment safety door cannot be opened when the printer is running, which may cause personal injury.

3. During the equipment maintenance process, the power supply must be cut off first.

4.  During the operation of the equipment, do not put other parts on the internal work surface of the equipment (such as scrapers, solder paste bottles, dust-free cloths).

What are the consequences of improper maintenance of SMT printer?

Printing quality decline: such as poor printing, offset, too much tin, too little tin and other problems, affecting the quality and qualification rate of products.

Increased equipment failure rate: Long-term lack of maintenance or improper maintenance will lead to increased wear of equipment parts, increased failure rate, and affect production efficiency and equipment life.

Safety hazards: Improper behavior such as not turning off the power and not wearing personal protective equipment may cause safety accidents such as electric shock and mechanical injury.

Why choose us to buy a pcb screen printer?

1. The company has hundreds of SMT printers in stock all year round, and both the quality of the equipment and the timeliness of delivery are guaranteed.

2. We have an expert technical team that can provide one-stop technical services such as relocation, repair, maintenance, CPK precision testing, board repair, motor repair, camera repair, etc. of SMT printers.

3. In addition to new and original accessories in stock, we also have domestic accessories, such as scrapers, scraper blades, etc. We have our own factory to produce them, which to a large extent helps customers reduce operating costs and increase profit margins.

4. Our technical team operates 24 hours a day and night shifts. For all technical problems encountered by SMT factories, engineers can answer them remotely at any time. For complex technical problems, senior engineers can also be sent to provide technical services on site.

In short, solder paste printers play a vital role in SMT production lines. When purchasing such important SMT equipment, you should carefully choose suppliers with technical teams and inventory, and consider the importance and timeliness of equipment after-sales service, so that production efficiency will not be affected by equipment downtime.