Explore our core export-grade industrial robotic arms, high-load linear units, and injection molding automation systems.
As modern manufacturing transitions toward hyper-automated, highly dynamic, and zero-defect production frameworks, standard 6-axis articulated robots and 3-axis Cartesian manipulators often encounter physical workspace boundaries. In large-scale industrial plants—ranging from multi-station injection molding centers to continuous automotive chassis assembly lines—fixed-base robots suffer from restricted operational envelopes, forcing plants to deploy redundant robotic units, which drastically inflates capital expenditure (CAPEX) and operating expenses (OPEX).
The 7th Axis Robot Track (also known as a Robot Transfer Unit - RTU or Linear Auxiliary Axis) acts as a external extended linear axis that transforms standard static industrial robots into mobile, versatile dynamic automation assets. By mounting 3-axis servo robots, 5-axis double-arm manipulators, or 6-axis articulated arms onto a precision-guided extended linear track, modern factories achieve expanded spatial coverage, multi-machine tending capabilities, seamless inter-bay material handling, and unmatched overall equipment effectiveness (OEE).
Key Engineering Gain: Integrating a Seventh Axis system extends the operational envelope of robotic arms from a localized point up to linear distances exceeding 30 to 50 meters, enabling a single high-precision robot to manage multiple work cells, CNC machines, or injection molding units simultaneously.
A high-performance Seventh Axis linear motion system demands extraordinary structural rigidity, low dynamic inertia, high torque transfer efficiency, and continuous positioning reliability under heavy payload stresses. At Zhejiang Zhiyi Intelligent Robot Co., Ltd., our engineering core integrates top-tier mechanical components with intuitive multi-axis synchronized control architecture.
Fabricated from heavy-duty structural steel profiles or stress-relieved high-grade extruded aluminum, our RTUs undergo finite element analysis (FEA) to eliminate torsional flex and resonance during high-speed acceleration and deceleration phases.
Utilizing helical rack-and-pinion technology or zero-backlash precision ball screws coupled with planetary gearboxes, our systems maintain repetitive linear accuracy down to ±0.02 mm over long distances.
Fully integrated with AC servo drive technology, the 7th axis operates as an interpolated auxiliary axis within the robot's main controller, allowing simultaneous, smooth multi-axis path motion planning.
| Performance Parameter | Light-to-Medium Duty (WKG Series) | Heavy-Duty Industrial RTU | Customized Extended Track |
|---|---|---|---|
| Nominal Payload Capacity | 15 kg – 50 kg | 100 kg – 1200 kg | Up to 3000 kg+ |
| Max Linear Speed | Up to 3.0 m/s | Up to 2.5 m/s | Tailored (1.5 - 2.0 m/s) |
| Repeatability Precision | ±0.02 mm | ±0.03 mm to ±0.05 mm | ±0.05 mm |
| Standard Track Length | 1.5m to 6.0m (Modular) | 3.0m to 12.0m (Modular) | Customized up to 50m |
| Drive Mechanism | Precision Helical Rack & Pinion | Hardened Helical Gear / Linear Motor | Heavy-Duty Dual Pinion Rack |
| Protection / Enclosure Rating | IP54 Standard | IP65 Heavy Industrial Dust/Oil Proof | Cleanroom / Anti-Corrosion Class |
Zhejiang Zhiyi Intelligent Robot Co., Ltd. provides versatile, domain-specific 7th axis linear travel solutions tailored to diverse manufacturing sectors. From precision plastic component extraction to heavy metal press automation, our systems elevate production efficiency.
Integrated with our 3-axis and 5-axis servo manipulators (e.g., WKG-1000, WKFI-950, and Bullhead series), the 7th axis tracks permit a single robot to extract molded parts across multiple high-tonnage (250T – 2300T) injection molding presses, execute fast downstream degating, and perform inline vision inspection.
Transferring raw sheet metal blanks into stamping presses, tending welding cells, and moving large automotive bumpers or dash panels over multi-meter tracks. High speed and repeatability ensure zero bottlenecking in continuous production lines.
Building upon our foundational expertise in thermos cup and metal lunchbox automation, our multi-axis robots mounted on linear tracks automate trimming, polishing, stretch-forming, insert molding, and laser marking with high throughput.
Long-reach 7th axis rail tracks enable high-speed pick-and-place packaging systems to pick finished goods from multiple input conveyors and distribute them across diverse pallet positions, minimizing factory footprint.
For international procurement directors, factory operators, and EPC contractors, evaluating automation investments requires rigorous ROI analysis. Seventh axis robot tracks significantly optimize capital deployment compared to static single-robot installations.
Rather than purchasing three separate robots for three adjacent injection molding machines, a factory can install a single multi-axis servo robot mounted on a 12-meter 7th axis linear rail—cutting machinery capital cost by up to 40%.
Replaces manual operators in hazardous environments (high temperature molding, toxic fumes, heavy lifting), reducing factory labor overhead by up to 30% while achieving continuous 24/7 continuous operation.
Compact track layout preserves valuable shop-floor real estate. Advanced regenerative servo drives minimize overall energy consumption during dynamic braking cycles.
Empirical data across 500+ deployment cases shows that Zhiyi's high-efficiency robotic tracks yield full investment payback within 8 to 14 months of operational deployment.
Established in 2017, Zhejiang Zhiyi Intelligent Robot Co., Ltd. stands as a pioneer of intelligent manufacturing solutions. Founded on a deep insight into global Industry 4.0 trends, the company has grown into a recognized National High-Tech Enterprise specializing in R&D, structural design, controller integration, and international export of advanced industrial robotics.
Established with a focused mission to automate manual metal stretching and plastic molding lines using robust truss manipulators.
Achieved massive technological breakthroughs in the thermos cup, stainless steel lunch box, and daily hardware sectors, earning strong market trust.
Expanded into multi-axis articulated robots, 7th axis linear tracks, and automatic packaging machines, serving automotive parts, precision electronics, and household goods.
Awarded the honorary status of "National High-Tech Enterprise" with over 11 utility patents and practical invention patents.
Our state-of-the-art production base is designed for high-precision manufacturing, assembly, and rigorous quality testing. Supported by an elite foreign trade team, we deliver professional, fast, economical, and safe automated systems worldwide.
Continuous innovation, broad application scenarios, deep industry integration, and dedicated client-first support.
We leverage deep learning algorithms, neural network motion planning, intelligent vision sensors, and custom end-of-arm tooling (EOAT) to ensure dynamic accuracy in highly complex work cells.
By closely tracking evolving market demands, Zhiyi designs tailored solutions that seamlessly adapt to new materials, tight cycle times, dynamic payloads, and complex workspace layouts.
By integrating upstream raw component sourcing with downstream software customization, Zhiyi guarantees fast delivery schedules, strict quality control, and competitive wholesale pricing.
From tailor-made welding/inlay upgrade packages to 24/7 technical assistance, our engineers deliver live factory demonstrations, system integration training, and ongoing operational support.
In response to international demand and China's "Belt and Road" initiative, Zhejiang Zhiyi Intelligent Robot Co., Ltd. has expanded its strategic footprint across Southeast Asia, Europe, and the Americas. By establishing regional service centers and local technical partnerships, we ensure fast response times, seamless installation support, and on-site training for overseas clients.
Increasing annual R&D investment to drive next-generation linear motor 7th axis systems, cloud-connected digital twin modeling, and predictive maintenance algorithms that prevent unscheduled line shutdowns.
All machinery adheres to international electrical and mechanical standards, including CE marking, ISO9001 certification, and UL-compliant panel configurations for North American markets.
Committed to eco-friendly production practices, our energy-efficient drive systems reduce carbon footprints, supporting global industrial sustainability goals.
Expert insights addressing key technical, logistical, and purchasing considerations for Seventh Axis Robotics.
A Seventh Axis Robot, or Robot Transfer Unit (RTU), is an auxiliary linear motion track that extends the workspace of standard 3-axis, 5-axis, or 6-axis industrial robots. By mounting robots on linear rails, a single robot can service multiple machines (such as injection molding machines or CNC lathes) over distances up to 50+ meters, reducing total machinery capital costs, floor space usage, and labor overhead.
Zhiyi designs and manufactures customized linear motion tracks supporting payloads from 15kg up to 3,000kg+. Standard track modules range from 1.5 meters to 12 meters, and can be seamlessly joined to extend up to 50 meters or more based on project requirements.
Yes. Our linear transfer units can be engineered to seamlessly integrate with our own servo robot series (WKG, WKFI series) as well as major international robot brands (such as KUKA, ABB, FANUC, Yaskawa, and Kawasaki) using customized mounting adapter carriages and synchronized controller interfaces.
Our precision helical rack-and-pinion transmission systems paired with linear guide rails deliver repeatability down to ±0.02 mm. Built-in automatic lubrication units and heavy-duty dust covers maintain long-term precision even in demanding industrial environments.
Zhiyi provides a comprehensive 12-month standard warranty, remote technical diagnostics, lifetime spare parts supply, and 24/7 technical customer support. For major international deployments, our field application engineers can provide on-site installation, commissioning, and staff training.
Discover our extended range of precision servo robots, double-section manipulators, and high-speed factory automation solutions.
ZHIYI Robotics
