What is Laser Plastic Welding Machine
Synchronous laser plastic welding machine uses high-power semiconductor laser as its welding light source, which has the advantages offast welding time, low thermal effect and low welding thermal stress, effectively improving production efficiency and welding quality.
Based on the synchronous laser welding system units, we have developed 4 sets synchronous laser plastic welding machine. If you want to know more about our laser welding machines, please feel free to contact us: info@jfortunemachine.com, we can show you more in details.
- Use 980nm semiconductor laser unit with high power;
- Including 32 sets of synchrotron radiation light source;
- Power and light emission of each welding area can be adjust according to the needs;
- In order to save installation space integrated water cooling structure is used;
- Laser welding equipment has the function of automatic tool change, automatic tool locking and identify the serial number and version of nesting automatically;
- Support 1.4-meter through-type taillights and fixed-side taillights for two cavities welding;
Plastic synchrotron laser transmission welding is to press the plastic parts of the upper layer through near-infrared band and the plastic parts of the lower absorption layer together, through the laser beam energy melting of the lower side material, under the action of pressure and quickly solidified with the upper material; Plastic synchronous laser welding has the advantages of fast welding speed, small thermal stress, small welding deformation, no vibration, dust and high temperature in the welding process, suitable forautomobile,3C electronics and medical industries.
In the design, the outgoing beam is homogenized, and the spot has obvious flat-top distribution
and good uniformity, which is suitable for laser welding of plastics.
Used to support the welding are used for optical structure design of optical fiber orientation and the wedge of light guide plate structure, which is strictly in accordance with our size the positioning of the optical fiber welding efficiency and the uniformity of the energies of the beams test results perform the design, structure design of guide plate to a great extent improve the efficiency of welding, using the characteristics of synchronous welding way is as follows:
- The design of the uniform distribution of each fiber combined with the light guide plate gives the flexibility of 30 welding. The fiber can be freely distributed according to the copy surface of the product to be welded, and the welding stability can be guaranteed;
- The design of light guide plate greatly improves the welding efficiency. Under the condition of ensuring good transmittance, the welding duration is generally about 3-6 seconds;
- The energy concentrated on the welding line can instantaneously melt the underside materials, which can greatly reduce the thermal deformation and internal stress of the welded products when compared with traditional welding;
- Each light source is separately controlled, and the power and light time can be separately controlled according to debugging requirements.
FAQs About Laser Plastic Welding Machine
What is a laser plastic welding machine?
A laser plastic welding machine is an advanced joining system that adopts high-power semiconductor lasers to weld thermoplastic materials. The operation principle involves near-infrared laser energy passing through the upper layer of laser-transparent plastic while causing the lower layer of laser-absorbing plastic material to melt. Under controlled pressure, this process achieves a strong, clean, and precise weld.
How does synchronous laser plastic welding work?
Synchronous laser plastic welding uses multiple laser light sources operating simultaneously along the weld contour. Laser energy is evenly distributed via optical fibers and light guides, allowing all weld points to melt at the same time. This achieves faster welding cycles, minimizes thermal stress, and keep high consistent weld quality.
What wavelength does the laser plastic welding equipment use?
This laser plastic welding machine adopts a 980 nm high-power semiconductor laser, making it highly suitable for near-infrared transmission welding of plastics. This wavelength ensures high energy efficiency, stable output, and excellent compatibility with automotive, electronics, and medical applications.
What are the main advantages of synchronous laser plastic welding?
Synchronous laser plastic welding offers significant advantages, including:
- Fast welding speed (typical single welding cycle: 3–6 seconds)
- Low thermal effect and minimal heat-affected zone
- Significantly reduced welding distortion and internal stress
- No vibration, dust, or spatter during the welding process
- High welding precision and repeatability
These advantages make it highly suitable for high-quality, high-volume industrial production.
What industries use laser plastic welding machines?
Laser plastic welding machines are widely applied in:
- Automotive manufacturing (e.g., automotive tail lights, sensors, fluid containers)
- 3C electronics (consumer electronics, connectors, housings, etc.)
- Medical device (plastic welding applications requires high cleanliness and particle-free)
Its non-contact, dust-free welding process is particularly suitable for industries demanding extremely high cleanliness and precision.
What makes this laser welding system suitable for large automotive parts?
The system supports one cavity for 1.4-meter through-type taillights and fixed side taillights with double cavities welding, making it ideal for large plastic automotive lighting components requiring long weld seams, high consistency, and excellent airtightness.
How Does Optical Design Improve Welding Quality?
The laser plastic welding machine homogenizes the emitted laser beam, producing a distinct flat-top distribution that ensures uniform energy density across the weld line. Combined with optimized optical fiber distribution and light guide plate structure design, this significantly enhances welding efficiency, consistency, and weld strength.
Does the machine support automatic tool change?
Yes. This laser plastic welding machine supports automatic tool change and automatic tool locking, and can automatically recognize the serial number and version of the tooling. This effectively reduces changeover time and improves production efficiency in multi-model production environments.
What advantages does laser plastic welding have comparing with traditional plastic welding methods?
Compared to traditional plastic welding methods such as vibration welding and hot plate welding, laser plastic welding offers:
- Lower thermal deformation
- No mechanical vibration
- Cleaner welding process with no debris
- Higher aesthetic quality of welded parts
- Precise control over weld strength and appearance
Therefore, laser plastic welding has become the preferred welding solution for high-end and high-precision plastic assemblies.