The core application of high-frequency equipment in the manufacturing of pneumatic waist supports

In the manufacturing of pneumatic lumbar supports, high-frequency equipment utilizes high-frequency electromagnetic field heating to weld materials such as TPU, serving as a critical tool for enhancing welding strength, efficiency, and personalized lumbar support functionality. Specific applications and advantages are as follows:

I. Core Applications of High-Frequency Equipment in Pneumatic Lumbar Support Manufacturing

Enhanced Welding Strength
High-frequency equipment employs high-frequency electromagnetic field heating to generate frictional heat at the molecular level of TPU materials, resulting in a robust welded structure. For instance, Puxiong’s patented technology utilizes multi-mold combinations—such as inner weld seams, outer weld seams, and air tube welding—to achieve high-strength welding of various components of the lumbar support airbag. This ensures the airbag remains leak-free and deformation-resistant during inflation and deflation.

High Efficiency and Process Integration
Traditional lumbar support airbag welding requires two steps (single-side welding + tube port welding), whereas high-frequency equipment enables one-step integrated molding. For example, Puxiong’s newly patented high-frequency welding machine, featuring a dual-sliding table structure and dual-end high-frequency release technology, increases welding efficiency by over 50% while eliminating the need for tube port welding, thereby reducing production costs.

Personalized Lumbar Support Design
Puxiong’s high-frequency equipment supports the manufacturing of complex-shaped lumbar support airbags to meet personalized support needs. Custom molds, for instance, can create ergonomic curved or wave-shaped airbags. Combined with pneumatic adjustment functions, this enables precise control over support intensity and range, enhancing driving and seating comfort.

II. Technical Advantages of High-Frequency Equipment

Reliable Welding Quality

• Molecular-Level Fusion: The high-frequency electromagnetic field induces direct molecular friction-generated heat, resulting in welding strength close to the material’s intrinsic strength—far superior to adhesive bonding or mechanical fastening.
• Excellent Sealing: Welded edges are smooth and gap-free, ensuring the airbag remains leak-proof under high-pressure inflation and extending its service life.
• Strong Weather Resistance: Welded areas exhibit excellent anti-aging and low-temperature resistance, making them suitable for harsh automotive interior environments.

High Production Efficiency

• High Automation: Integrated with automation devices such as sliding tables and rotary indexers, the equipment enables continuous production, with daily output reaching thousands of units per machine.
• Rapid Heating and Cooling: High-frequency heating takes only 0.1–3 seconds, and the product can be demolded immediately after cooling, significantly shortening the production cycle.
• Easy Mold Changeover: Modular design allows quick mold replacements, accommodating multi-variety, small-batch production needs.

Wide Material Compatibility
High-frequency equipment can weld various thermoplastic materials, including TPU, PVC, and EVA, making it particularly suitable for manufacturing lumbar support airbags made of TPU-nylon composites. For example, Puxiong’s 12KW high-frequency welding machine supports welding materials up to 8mm thick, meeting production requirements for airbags of varying thicknesses.

III. Typical Application Cases

Automotive Lumbar Support Airbag Molding
A company developed a high-frequency welding machine for automotive lumbar support airbag molding. Utilizing dual high-frequency cylinders and copper electrode current guidance design, it achieves integrated welding of airbags and tube ports, increasing welding efficiency by 30% and achieving a product qualification rate of over 99.5%.

TPU Airbag Welding Tooling
In patented automotive component technology, multi-mold combinations—such as inner weld seams, outer weld seams, and air tube welding—are used alongside felt plate welding molds to achieve fully automated production of lumbar support airbags. This increases welding strength by 20% compared to traditional processes.

Smart Pneumatic Lumbar Support System
Combining high-frequency welding technology with pneumatic adjustment modules, a smart lumbar support system with personalized support intensity and range adjustment has been developed. This system allows users to control airbag inflation and deflation via a mobile app or in-car screen, catering to the comfort needs of users with different body types.