Laser welding has become a new technology for the production of car cameras

The camera is considered the eyes of the car. With the gradual maturity of the active safety driving functions of smart cars, the functional requirements are getting higher and higher. Forward view. Look around. Rear view cameras are gradually becoming the standard, and the increase in the number of bicycle cameras has also brought new opportunities and challenges to related companies in the industrial chain. Plastic laser welding technology is based on the requirements of camera assembly sealing stability, and more and more automakers are applying it to the processing and assembly of cameras.

Intelligent driving requires more accurate perception of the environment, and the resolution and frame number of cameras are also increasing, and algorithms and multi-sensor integration are also increasing. Ultrasonic welding or screw locking packaging methods are limited, and the high-frequency vibration transmission welding of ultrasonic welding will affect the internal chip of the camera; in bad weather, the screw locking has the risk of loosening and falling off, affecting the function of the camera. In this case, plastic laser welding reflects the advantages of camera packaging.

Through the principles and characteristics of plastic laser welding, understand the application advantages of plastic laser welding on cameras;

1. Principle of Plastic Laser Welding

Plastic laser welding applies the beam generated by the laser to the area to be welded. During the solidification process, the molten material forms a new molten material to connect the welded parts.

The main process is:

Plastic pressure ring, plastic lens barrel, base, bracket and other hardware are mainly made of so-called black material. According to the requirements of laser welding for laser penetration, the upper layer is laser penetrating plastic and the lower layer is light-absorbing plastic. Many manufacturers are also developing laser welding materials such as PBT.LCP.PPS.PC/ABS and PA.

Second, the advantages of plastic laser welding

The following advantages are for reference:

1. The two materials melt into each other, the welding stability is good, and the appearance is clean.

The traditional camera housing uses glue or screw buckles, which are easy to fall off under certain external environments, and the seal is unstable, affecting the use of the camera. Laser welding combines the two materials to form a new mutually fused material, without excess material, with high appearance cleanliness and good stability.

2. Slight structural optimization, adjustable welding line position.

With the optimization of the upper and lower shell structures of the camera, the welding line can be arranged on the side of the product through clever design and plastic laser welding tools.

3. Monitoring and tracing of welding quality.

During the plastic laser welding process, by optimizing the program, adding CCD lenses, monitoring the welding process and final quality, and eliminating suspicious parts.

4. Fully automatic processing, low welding cost.

For large-scale production, especially with more and more in-car cameras, some even reaching 15.21 units, the camera market has broad prospects, and laser welding realizes the automation process, further reducing the processing cost.

In view of the high standard sealing of vehicle-mounted cameras, taking Shanghai Sanshu as an example, the camera laser welding equipment developed has been imported in batches by customers, with multi-station conversion, realizing automated production, high processing efficiency and short welding time.

In addition to car cameras, plastic lasers are also widely used in smart car atmosphere lights, headlights, taillights, millimeter-wave radars, and even medical products.

The development of smart cars is first and foremost affected by the sensor industry, among which car cameras can be said to be one of the important guarantees for smart car driving safety in the sensor industry, which is currently mature in application and rapidly growing in scale. Car cameras have strict requirements on accuracy and reliability.