Laser marking, also known as laser engraving in factories, is a precision marking process widely used in modern manufacturing. It uses a high-energy-density laser beam to locally irradiate the material surface, vaporizing, melting or chemically discoloring the surface material to engrave permanent marks such as texts, logos, QR codes and serial numbers. Different from ink printing, sticker labels or mechanical stamping, the laser is an invisible "light knife". The whole processing does not make direct contact with the product surface. Nowadays, it is widely applied in production lines of electronics factories, hardware, auto parts and so on. When Darfon Electronics manufactures Apple keyboards, many brand characters on keycaps are made by laser marking.

As manufacturing increasingly adopts automation and digital traceability, permanent product identification has become more critical than ever. QR codes are now widely used to store manufacturing data, batch numbers, serial numbers, warranty information and inspection records.

However, conventional marking methods such as ink‑jet printing, labels and adhesive stickers often fail under harsh industrial conditions. Inks fade, labels peel off, and printed QR codes become unreadable over time.

A UV laser marking machine addresses these challenges by generating permanent, high‑contrast QR codes directly on plastic components while avoiding thermal damage. Its cold‑laser technology delivers precise, long‑lasting marks that remain readable throughout the product’s service life.

In this article, we will explain how UV laser marking machines work, why they are the preferred choice for QR‑code marking on plastics, and how they improve industrial traceability.

The lenses used in the laser head are the core components of the laser equipment. They play a key role in the laser head to adjust and control the optical path. They include focusing lenses, collimating lenses, protective lenses and reflective lenes.

High-precision laser cutting machine is a cutting equipment designed by using laser technology and CNC technology. It has the characteristics of stable laser power, good beam mode, high peak power, high efficiency, low cost, safety, stability and easy operation.

The equipment is equipped with a high-precision CNC workbench controlled by a working PC. During cutting, high-precision cutting and punching are performed by adjusting the laser frequency, pulse width, workbench speed and moving direction.

High-precision laser cutting machine: It integrates multiple design concepts, adopts a fully enclosed safety design, a large-format body, high-speed maneuverability, and a follow-up dynamic focusing device to achieve automatic focus cutting of materials of different thicknesses. The workbench adopts a universal wheel design, which saves more manpower consumption and facilitates material feeding. It adopts a fully enclosed design, which is safe, environmentally friendly, generous, beautiful, meets CE standards, and has a wide range of applicable performance! !

The heat-affected zone on the substrate during laser cladding is small, and the workpiece deformation is small:. The cladding layer can achieve metallurgical bonding with the substrate material, and the dilution rate of the cladding material is low. The cladding layer has fine grains and a dense structure, which can obtain higher hardness and wear resistance, corrosion resistance and other properties. Selective local repair can be achieved, effectively reducing the repair cost: the powder material system has a relatively high adaptability, and most conventional and special metal powder materials can be clad on the surface of metal parts.

The cutting robot arm is an automated device that can complete the cutting tasks of various materials through the flexible movement and precise control of the robot arm. It is widely used in industrial production and can improve production efficiency and product quality. The composition and working principle of the cutting robot arm The cutting robot is mainly composed of a robot arm, a control system and a tool. The robot arm is usually connected by multiple joints and can imitate the movements of the human arm. The control system achieves precise cutting by precisely controlling the motion trajectory and speed of the robot arm. The tool is the core component of the cutting robot, and different types of tools can be selected according to different cutting requirements. Application fields of cutting robot arms Cutting robots are widely used in various fields of industrial production. For example, the cutting robot arm in the metal processing industry can be used for cutting metal sheets; the cutting robot arm in the woodworking industry can perform precise wood cutting; the cutting robot arm in the textile industry can be used for cutting cloth, etc. Advantages and challenges of cutting robot arms The cutting robot has the following advantages over traditional cutting methods: it can achieve high-precision cutting, greatly improving product quality; the cutting robot arm has the characteristics of high efficiency, which can greatly improve production efficiency; due to the application of automation, it can also reduce labor costs and reduce the risk of work-related injuries.

The welding robot arm mainly consists of three parts: the robot arm, the welding machine power supply and the control cabinet. (including its control system), wire feeder (arc welding), welding gun (pliers) and other parts. For intelligent robots, there should also be a sensing system, such as laser or camera sensors and their control devices.

The robot arm can realize welding automation, improve productivity and reduce enterprise costs. It can also improve the corporate image.

To achieve high-efficiency welding, two prerequisites are required:

1. The cutting accuracy is high and the product consistency is high, so as to better realize automated welding.

2. The assembly accuracy of the workpiece should be high, and the assembly error should be less than the directness of the welding wire.