Welcome to Shanghai Tongle Cable – International Official Website 简体中文简体中文 EnglishEnglish

Various Brand Cables、National Business
Consulting Telephone:400-821-8731
标签ad报错:找不到与第一套【cn】语言关联绑定的属性 aid 值。

The Artisanal Birth of an Industrial Cable

Release time:2026-04-12 12:05:26 Views:

At 7 a.m., as the first rays of sunlight bathe the modern production base of Shanghai Tongle Cable Co., Ltd. (Jiangsu), the tens of thousands of square meters of workshop are already brightly lit and roaring with machinery. From the precise operation of high-speed wire drawing machines to the intricate braiding of shielded weaving machines, and the rigorous testing in the quality inspection center, a feast of industrial manufacturing centered on precision, efficiency, and quality unfolds here every day. Countless high-flex cables, servo cables, and robot cables, which bear the mission of industrial automation, are shipped from here to all parts of the country and the world.

1. Raw Material Inspection: The First Line of Quality Control

Cable quality starts at the source. Every morning, trucks carrying 99.99% high-purity oxygen-free copper rods and environmentally friendly insulating and sheathing materials arrive at the factory on time—these are the core raw materials for Tongle Cable production. No raw material is allowed to enter the production line without passing inspection.
  • Copper Material Testing: Laboratory technicians use spectrum analyzers and resistance testers to inspect the purity and conductivity of copper batches, ensuring resistance values meet national standards and eliminating impurities that could affect electrical performance.

  • Plastic Material Inspection: Insulation and sheathing compounds undergo tensile, temperature resistance, and oil resistance tests. Only materials that meet UL and CE environmental standards are labeled as qualified.

  • Intelligent Warehousing: Qualified raw materials are scanned via RFID and logged into the MES system, automatically assigned to storage locations, and linked to batches, enabling full traceability from warehousing to usage.


2. Wire Drawing & Stranding: Forging the "Backbone" of the Cable

After raw material inspection, the first production process—wire drawing and bunching—begins. High-speed wire drawing machines precisely pull thick copper rods into ultra-fine copper wires of 0.15-0.5mm at speeds of thousands of meters per minute. Dozens of these fine wires are then orderly twisted on bunching machines to form soft, strong conductor cores.
  • Precision Control: Drawing tension and stranding pitch are automatically regulated by PLC systems, with errors controlled at the micron level to ensure uniform conductor structure and flexibility.

  • Flexible Craftsmanship: For high-flex drag chain cables and robot cables, an ultra-fine multi-strand tinned copper wire structure is adopted, allowing the cables to withstand millions of bends without breaking.

  • Real-Time Monitoring: Workshop displays show real-time data on wire diameter, speed, and temperature, with automatic early warnings for abnormalities to eliminate semi-finished product defects.


3. Insulation Extrusion & Shield Braiding: The "Protective Armor" for Signal Transmission

Once the conductor is formed, the core process—insulation extrusion and shield braiding—commences. Precision extruders uniformly coat environmentally friendly plastic around the core, with thickness errors strictly controlled within 0.01mm. For servo cables and encoder cables, double shielding (aluminum foil + tinned copper mesh) is applied, achieving a shielding rate of over 95% to completely isolate electromagnetic interference.
  • High-Precision Temperature Control: Extrusion temperature is stabilized at 180-200°C, ensuring the insulation layer is free of bubbles, scratches, and has strong adhesion.

  • Tight Shield Fit: Braiding machines operate at hundreds of revolutions per minute, with copper mesh tightly wrapping the core to build an "electromagnetic firewall" for signal transmission.

  • Online Inspection: Spark testers conduct real-time voltage resistance tests, with every meter of cable subjected to 3-5kV high-voltage testing to ensure no insulation breakdown.


4. Cabling & Sheathing: Giving the Cable Its Complete "Life Form"

Multi-core cables undergo the cabling process, where multiple cores are twisted to specification, followed by outer sheath extrusion. Large cabling machines twist cores in an orderly manner, and outer sheath extruders clad the cable in a wear-resistant, oil-resistant, low-temperature-resistant "outer layer".
  • Weather-Resistant Formula: The sheathing material uses special modified compounds, enabling stable operation in -40°C to 105°C environments, with oil resistance, acid and alkali resistance, and aging resistance.

  • Clear Marking: Cable surfaces are laser-printed with specifications, models, certifications, and length markers, ensuring clear, wear-resistant text for easy construction and maintenance.

  • Intelligent Winding: Automatic length counting and tension control ensure neat coiling, with 1.5m test sections reserved at both ends of each coil.


5. Full-Spectrum Quality Inspection: Leaving No Room for Defects

Production completion is not the end, but the start of the strictest quality inspection. Tongle Cable implements a "100% Full Inspection + Special Sampling Inspection" system, subjecting every cable to a "full physical examination".
  • Electrical Performance Testing: Conductor resistance, insulation resistance, voltage resistance, and partial discharge tests ensure electrical performance meets standards.

  • Mechanical Performance Testing: Tensile, bending, and torsion tests—drag chain cables withstand 15 million bends, and robot cables withstand ±180° torsion cycles 100,000 times.

  • Environmental Simulation Testing: Temperature, oil, weather, and flame retardant tests simulate extreme working conditions to verify stability.

  • Appearance & Dimension Inspection: Projectors measure structural dimensions to ensure outer diameter, thickness, and structure fully comply with standards.


6. Intelligent Management: Digitalization Empowers Efficient Production

In the modern workshop, the MES intelligent production system runs through the entire process:
  • Intelligent Production Scheduling: Automatically matches orders, equipment, and materials, flexibly handling urgent orders with an on-time delivery rate exceeding 98%.

  • Full Traceability: One product, one code—scanning reveals raw material batches, equipment parameters, operators, and inspection records.

  • Digital Dashboard: Real-time display of output, progress, pass rate, and equipment status for transparent, controllable production.

  • Lean Production: Implements 6S management, pre-shift safety meetings, and regular equipment maintenance to ensure safety and efficiency.


7. Artisanal Persistence: Connecting the World, Creating with Joy

From dawn to dusk, Tongle Cable’s workshop remains orderly and bustling. There are no earth-shaking feats here, only daily dedication and relentless pursuit of excellence.
  • 24-Hour Operation: Equipment runs an average of 22 hours per day, producing over 5 million kilometers of various cables annually.

  • Artisanal Team: A technical and operational team with an average of 8+ years of industry experience controls every detail with expertise and data.

  • Mission-Driven: Guided by the philosophy of "Integrity First, Quality Excellence, Service Supreme", Tongle Cable provides the "industrial nerves" for intelligent manufacturing, robotics, new energy, and automated production lines.

As Tongle cables flexibly twist at the joints of industrial robots, transmit signals accurately in CNC machine tools, and operate stably in automated production lines, they are backed by these ordinary yet persistent daily production routines—forging quality with craftsmanship, winning the future with quality.
Connecting the World, Creating with Joy — Tongle Cable safeguards the reliable pulse of industrial automation with every day of production.


 (economical bending resistant)High flexible shielded cable TRVVP
RVVP Shielding Instrumentation Electronics Automation Device Shielding
Servo shield drive high flexible cable
在线客服
联系方式

张小姐 :18117128178

孙小姐 :19921460069

黄先生 :18939781351

二维码
线