Products Description
Introduction to Leather Wrapping Line for Automotive Interior Parts
The Leather Wrapping Line for Automotive Interior Parts is a core automated production line in the automotive interior manufacturing process. It is mainly used to accurately wrap leather materials on the surface of substrates such as plastics and metals, producing high-quality interior components including seat covers, door trim panels, soft-wrapped instrument panels, and center console panels. It is a key equipment system for enhancing the luxury, tactile feel, and durability of automotive interiors.
I. Core Component Modules
1. Substrate Preprocessing Unit
As the basic preparation link before wrapping, this unit mainly functions to perform surface treatment on interior part substrates (such as PP, ABS plastic parts or aluminum alloy frames): After the substrates are conveyed by the automatic feeding mechanism, they first pass through a plasma cleaning machine to remove surface impurities like oil stains and dust. Then, a primer spraying device applies a uniform coat of special adhesive. Finally, the substrates enter a constant-temperature drying tunnel (with temperature controlled at 60-80℃) to ensure the adhesive reaches the optimal activation state, laying a solid foundation for subsequent leather bonding.
2. Leather Cutting and Preprocessing Unit
According to the shape requirements of different interior parts, this unit first uses a CNC cutting machine (equipped with a CCD visual positioning system) to cut the whole roll of leather into blanks of corresponding sizes, with an error controlled within ±0.5mm. Subsequently, a pre-softening device (adjusting temperature and pressure based on leather material) performs shaping preprocessing on the blanks to avoid wrinkles or uneven stretching during wrapping—this is especially suitable for materials with high elasticity such as genuine leather and microfiber leather.
3. Automated Wrapping Unit
As the core link of the production line, it adopts two mainstream processes based on the structural differences of interior parts:
Vacuum Thermoforming Wrapping: Suitable for flat or slightly curved parts (e.g., center console panels). The preprocessed leather is covered on the substrate surface, and the leather is tightly bonded to the substrate through vacuum negative pressure (vacuum degree ≥ -0.09MPa) in a sealed cavity. Meanwhile, a heating plate (temperature 120-150℃) is used to soften the leather, ensuring no air bubbles or edge warping.
Robotic Arm Pressure Wrapping: Suitable for parts with complex curved surfaces (e.g., door trim panels, seat backs). A 6-axis robotic arm carries a special wrapping mold (customized according to part shape) to accurately press the leather onto the substrate surface. At the same time, an edge folding mechanism wraps the excess leather (folding width 2-5mm) to achieve a "seamless wrapping" effect, with a wrapping efficiency of 30-50 pieces per hour.
4. Post-processing and Inspection Unit
After wrapping, the parts undergo multiple rounds of processing and inspection:
Cooling and Setting: The parts are quickly cooled through a cold air tunnel (temperature 15-25℃) to stabilize the bonding between leather and substrate, preventing delamination during subsequent use.
Trimming and Polishing: A CNC trimming machine cuts off the excess leather at the part edges, and then a sandpaper polishing mechanism (using 400-600 grit sandpaper) removes edge burrs to improve the appearance refinement.
Quality Inspection: A combination of "visual inspection + manual sampling inspection" is adopted. The visual system uses a high-definition camera (resolution ≥ 20 million pixels) to detect surface defects such as air bubbles, scratches, and wrinkles; manual inspection focuses on checking the uniformity of tactile feel and edge bonding strength (which must meet the industry standard of ≥ 5N/cm peel strength).
II. Core Technical Advantages
High Automation and Stability: The automation rate of the entire production line can reach over 90%. Through a PLC control system (equipped with a human-machine interface), it realizes parameter setting, process monitoring, and fault alarm, reducing errors caused by manual intervention. The product qualification rate remains stable at over 98%.
Multi-material Compatibility: It can adapt to various leather materials such as genuine leather, microfiber leather, and PVC artificial leather. By replacing molds and adjusting process parameters (e.g., temperature, pressure, vacuum degree), it can quickly switch production between interior parts of different vehicle models, with model changeover time controlled within 30 minutes—meeting the flexible production needs of "multiple varieties, small batches" in automotive manufacturing.
Eco-friendly and Energy-saving Design: It uses low-VOC (Volatile Organic Compounds) adhesives and is equipped with a waste gas collection and treatment system (purification efficiency ≥ 95%), complying with national automotive interior environmental standards (e.g., GB/T 27630-2011). Meanwhile, a waste heat recovery device is adopted to reuse the waste heat from the drying tunnel for preheating fresh air, reducing energy consumption by 15%-20% compared with traditional production lines.
III. Application Scenarios and Industry Value
The Leather Wrapping Line for Automotive Interior Parts is widely used in the production of interiors for mid-to-high-end passenger cars and new energy vehicles. Especially in luxury brand models (e.g., BMW, Mercedes-Benz, Audi) and new energy vehicle manufacturers (e.g., Tesla, NIO), it is a key equipment for realizing "interior personalization" and "quality upgrading". The interior parts produced by this line not only enhance the sensory experience of the vehicle (e.g., delicate tactile feel, uniform luster) but also improve the durability of the leather (with wear resistance reaching over 5,000 cycles and light aging resistance grade ≥ Level 4), helping automakers create differentiated advantages in market competition.
As consumers' demand for "luxury" and "environmental friendliness" in automotive interiors increases, this production line is developing towards "greater flexibility" (supporting customized interior part production), "higher intelligence" (integrating AI visual inspection and digital twin technology), and "stronger environmental protection" (using water-based adhesives and recyclable leather)—becoming an important driving force for technological upgrading in automotive interior manufacturing.
