Refrigerator Assembly Line — 26-Station Ground-Rail PU Production Line (URL-GR-26) is a CE / ISO 9001-certified производственные линии — холодильники, морозильники, холодильные камеры под ключ product manufactured by UREXCEED. Lead time: 120 – 180 days. MOQ: 1 line. Key applications: Household refrigerator cabinet foaming (top-mount, bottom-mount, French-door), Commercial chest freezer cabinet foaming (mass-production), Supermarket display cabinet foaming, Catering equipment cabinet foaming (chef base, prep table), High-volume OEM refrigerator factories (>1M cabinets/year), Multi-station continuous flow integration with full assembly line, Steam-infrastructure factories preferring lower power consumption, Cold-chain manufacturing complexes requiring large batch output.
URL-GR-26
Refrigerator Assembly Line — 26-Station Ground-Rail PU Production Line
Refrigerator assembly line: closed-loop ground-rail PU foaming line for high-volume refrigerator OEMs. 26 stations · 20-second cycle · ~3,000–6,000 cabinets/shift · steam or oil heating · POL + Cyclopentane + ISO foaming.
Характеристики
- Layout Form
- Ground rail (closed-loop track around the foaming room)
- Overall Dimensions (L×W×H)
- Approx. 29,500 × 7,950 × 3,350 mm
- Number of Stations
- 26
- Production Cycle Time
- 20 seconds per cabinet (excluding manual operation time)
- Fixture Template Size
- 2,000 × 900 mm (per station)
- Mold Closing Height
- 200 mm (customizable on request)
- Heating Method
- Steam heating or oil mold temperature controller heating
- Foaming Material
- POL + Cyclopentane + ISO, or POL + 141b + ISO
- Injection Method
- Manual vertical pouring with mold open
- Steam Capacity
- 200 m³/h
- Curing Oven Temperature
- 55 ± 5°C
- Steam Temperature
- 120 – 150°C
- Compressed Air Requirement
- Working pressure ≥ 0.5 MPa, air flow approx. 0.1 m³/min
- Power Consumption
- Steam heating ~25 kW (380V 50Hz) · Oil heating ~145 kW
- Best Fit Capacity
- ~3,000 – 6,000 cabinets per shift (single shift, 26 stations × 20s cycle)
- Lead Time
- 120 – 180 days
- MOQ
- 1 line
Применение
- Household refrigerator cabinet foaming (top-mount, bottom-mount, French-door)
- Commercial chest freezer cabinet foaming (mass-production)
- Supermarket display cabinet foaming
- Catering equipment cabinet foaming (chef base, prep table)
- High-volume OEM refrigerator factories (>1M cabinets/year)
- Multi-station continuous flow integration with full assembly line
- Steam-infrastructure factories preferring lower power consumption
- Cold-chain manufacturing complexes requiring large batch output
Сертификаты
Four pain points refrigerator factory founders bring us about PU foaming lines
These are the recurring frustrations we hear when refrigerator factories switch from manual or batch foaming to a continuous PU line.
Bottleneck at the foaming station — line speed limited by curing time
Manual / single-station setups force the entire factory to wait while each cabinet cures (5–10 min). Our multi-station lines (6–26 stations) decouple injection from cure: while station 1 is injecting, stations 2–26 are curing in parallel. Throughput jumps 5–10× without buying more PU machines.
Foam quality drifts shift-to-shift — operators tune by hand and recipe walks
Without temperature-controlled fixtures and metered PU dispensing, every operator settings drift compounds. Our line ships with PID ±0.5°C fixture temperature + ±0.5% PU metering accuracy + locked recipe storage in the PLC. Shift-to-shift variance drops from ±8 kg/m³ foam density to ±1 kg/m³.
Cabinet wall thickness variance fails type-test (EU 2019/2024 Ecodesign)
Type-test failures cluster around wall thickness variance > ±2 mm. Our line's combination of cast aluminium moulds (±0.05 mm cavity), temperature-controlled fixtures (±0.3 mm parallelism), and metered PU drops final wall thickness variance to ±0.3 mm. Type-test pass rate on first submission: 90%+.
Switching from HFC to cyclopentane breaks our existing line
EU F-gas regulations from 2025 force most factories off HFC-245fa. Adapting an old non-ATEX line costs USD 600K–1M in retrofits. Our cyclopentane-ready lines ship with ATEX Zone 1 electrics, LEL detection at 4 points, and N₂ blanket on day tanks — included in base line price, not an add-on.
3 line layouts — pick by daily output, product type, and factory footprint
Most refrigerator factories don't need just any PU foaming line — they need the specific layout that matches their cabinet output target, their SKU mix, and their workshop dimensions. Here's how the 3 layouts compare side-by-side.
| Aspect | Ground Rail | Linear | Rotary Door |
|---|---|---|---|
| Stations | 26 | 6–8 | 7–8 (hub) |
| Cycle time | 20 sec | 30 sec | 46 sec |
| Daily output | 3,000–6,000 cabinets/shift | 800–2,500 cabinets/shift | 600–1,000 doors/shift |
| Footprint | ~230 m² (29.5×7.95 m) | ~80–120 m² | ~33 m² (6×5.5 m) |
| Ceiling height min | 3.5 m | 3.0 m | 4.6 m |
| Power | 25 kW (steam) or 145 kW (oil) | ≤190 kW | ~65 kW |
| Operators per shift | 4–6 | 2–3 | 2 |
| Best for | Mainstream OEM >1M units/year | SMB OEM, multi-SKU mix | Door-only specialty |
| Body or door | Cabinet body | Cabinet body | Door only |
Most large refrigerator factories run ONE ground rail line for cabinet bodies + ONE rotary door line for doors in parallel. Mid-size factories pick linear for flexibility. Send us your cabinet output target and SKU mix and we map the right layout in 1–2 days.
How the line operates — stations, cycle, integration
A PU foaming line is more than just "moulds and a foaming machine bolted to a conveyor". It's a coordinated dance of cabinet loading, mould closing, PU injection, curing oven, demould, and cabinet release — all on a timed cycle. Here's the actual workflow.
- 1
Cabinet loading station
Pre-formed steel cabinet shell + ABS/HIPS inner liner enters the line. Operator (or robot) positions the cabinet on the mould fixture, aligns it via locating pins, locks the front and rear baffles. Takes 8–12 seconds per cabinet.
- 2
Mould closing + clamping
Mould top half lowers onto the cabinet, side-locking wheels engage, pneumatic mold locking activates. Clamping force builds to 1–5 tons depending on cabinet geometry. Heated platen reaches working temperature 40–60°C.
- 3
PU injection
Mould moves to injection station. PU foaming machine high-pressure mixing head injects POL + Cyclopentane + ISO mix through the gate. Single shot of 300–800 g depending on cabinet volume. Cream time 6–8 sec; gel time 35–50 sec; the cabinet then moves to the curing oven before tack-free.
- 4
Curing oven travel
Cabinet rides the conveyor through a 55 ± 5°C heated oven (steam or hot air). Foam fully cures in 5–8 minutes depending on cabinet wall thickness. Multiple stations in parallel — while one cabinet is curing, the next is being injected.
- 5
Demould + release
Mould opens, demould assist mechanism lifts the cabinet free, conveyor transports to downstream evaporator/condenser assembly line. Mould returns to loading station, ready for next cabinet. Total round-trip station-to-station: matches the line's cycle time spec.
How the line pairs with our moulds, fixtures, machines, and PU chemicals
A PU foaming line is the integration platform — it doesn't work alone. Here's how the catalog §03 moulds, §04 mold fixture, §05 PU machines, and §02 raw materials snap together on this line.
The 6 refrigerator cabinet moulds (catalog §03) bolt directly to fixture plates on each station. Standard mounting pattern fits all our moulds; adapter plates available for non-UREXCEED moulds.
View product →The mold fixture (catalog §04) is one fixture per station — ground rail has 26, linear has 6–8, rotary door has 7–8. Each fixture is independently temperature-controlled.
View product →The cyclopentane high-pressure PU foaming machine (catalog §05) sits at the injection station and feeds via heated transfer hoses to each mould. One machine serves one line; for redundancy, factories may install a backup.
View product →PU raw materials (POL + Cyclopentane + ISO) are stored in 22.5-ton ISO tanks (polyol, MDI) + cyclopentane day tank, all with N₂ blanket and PID temperature control. Material consumption for a 26-station ground rail line at full capacity: ~30 tons polyol + ~30 tons MDI + ~3 tons cyclopentane per month.
View product →When you order moulds + fixtures + PU machine + materials + line together, we calibrate the whole stack at our factory before shipment. Cuts on-site commissioning time from 8 weeks to 2–3 weeks.
Steam heating vs oil heating — running cost reality
Ground rail lines can be configured for steam heating (25 kW power draw) or oil heating (145 kW). The 6× power-consumption gap looks dramatic, but the real total-cost-of-ownership picture depends on your existing factory infrastructure.
| Aspect | Steam Heating | Oil Heating |
|---|---|---|
| Equipment cost | ~baseline | ~baseline (similar) |
| Line power consumption | ~25 kW | ~145 kW |
| Boiler / heater capex | High (need separate steam boiler if no existing) | Built-in electric heater, no extra capex |
| Running cost (cheap electricity, no steam) | High capex but low ongoing | Low capex, moderate ongoing |
| Running cost (existing steam plant) | Very low (marginal cost) | Wasteful (paying for electric heat you don't need) |
| Best fit | Existing steam-infrastructure factories | Factories without steam, cheap electricity |
Rule of thumb: if your factory already has a steam boiler running for other processes (curing rooms, washing, sterilization), add steam heating to the foaming line — marginal cost is near zero. If you're a greenfield factory in a region with cheap industrial electricity (USA, parts of Europe, Middle East), oil heating saves the boiler capex.
Installation timeline — from PO to first cabinet rolling off the line
A refrigerator PU production line is a 10–14 week project from purchase order to first foamed cabinet. Here's the realistic timeline with each milestone.
Week 1–2: Design freeze — finalize line layout, mould fixture spec, civil works drawing. We send foundation drawing + utility hookup spec to your contractor.
Week 3–6 (parallel): Civil works at your site (foundation pad, drainage, utilities). Equipment fabrication at our factory.
Week 5–10: Sea freight shipping (4–6 weeks transit depending on port).
Week 10–12: On-site installation by our 3–5 engineer team — 1–2 weeks for linear / rotary door, 2–3 weeks for ground rail.
Week 12–14: Commissioning + first 20–50 trial cabinets + operator training. Sign-off and handover.
Ongoing: Remote diagnostics free for 24 months. Engineer return visit at 3 months and 12 months included.
Optional upgrade modules — extend a base line without buying a new one
The base line covers the foaming workflow end-to-end. These modular add-ons slot in at specific stations to unlock additional capacity or quality control.
Automatic mould release dispenser — robotic spray of release agent before each cycle. Cuts manual operator step, improves coating uniformity. +USD 18K–35K. Pays back in 8–14 months at 1,500+ units/day.
ABB / KUKA 6-axis robot integration — robotic mould loading, demoulding, palletizing, or insertion of internal components (evaporator, condenser). +USD 80K–180K per robot. Boost throughput +30%, cut labor 4 operators per shift.
Full sensor + traceability pack — embedded thermocouples + pressure sensors per station + PLC data logging + cabinet serial-number-to-batch traceability. +USD 40K–80K. Required for medical refrigerator / ULT / regulated markets.
Auto-demould assist mechanism — pneumatic lifters that pull cabinets free from mould without operator handling. +USD 22K–48K. Reduces cabinet damage rate from 1% to <0.1%.
Vision-based quality inspection — 4-camera scan of each cabinet (wall thickness, surface defects, dimensional accuracy) before line exit. +USD 60K–120K. Catches 95%+ of foam defects before downstream assembly.
In-line foam scrap recycling — grinds foam offcuts back into raw material feed (up to 8% recycled content). +USD 35K–60K. Cuts raw material cost 5–7% and meets EU PEF recycled-content thresholds.
Customization — line layout adapted to your factory and capacity target
No two refrigerator factories are identical. We customize the line on 5 axes so you don't over-spec capacity you don't need or under-spec capacity you can't expand later.
Station count
Station count — 6 (linear / rotary) / 12 (small ground rail) / 18 / 26 (full ground rail). Pick by daily output target (500–10,000 cabinets/day). Modular backbone — add stations later as production scales.
Factory layout
Factory footprint — straight L-rail (60–80 m long, narrow factory) / parallel double-rail (compact 30 m × 20 m, wide factory) / rotary hub (15 m radius circular, square factory). Our engineers design to your floor plan.
Cabinet SKU mix
Cabinet SKU mix — single-SKU (highest throughput, fixed mould fixtures) / multi-SKU (3–8 SKUs rotating through quick-change fixtures, 25–30% throughput hit). Pick based on your product line.
Heating method
Heating method — steam (cheap if factory has boiler) / electric oil (no boiler needed, 6× power draw) / hybrid. Choose at quote stage based on your factory utilities.
Automation tier
Automation tier — manual labor (4–6 operators per shift) / semi-auto with robot loading (2–3 operators) / full-auto with vision QC + auto-demould (1 operator monitoring). Capex scales 1× → 1.5× → 2× across tiers.
Service, warranty, and what happens 5 years later
A refrigerator PU foaming line is a 10–15-year asset. Here's the long-game support picture.
Warranty
Standard 24-month warranty on mechanical structure (rails, frames, lifting drives). 12-month on electrical/PLC components. 6-month on wear parts (seals, sensors, heating elements). Extended 4-year mechanical warranty available at order time (+5% line cost).
Spare parts kit
Recommended spare parts kit at order: ~3% of line cost. Covers 2 years of routine wear (seals, O-rings, sensor heads, heating elements). 24/7 spare-parts emergency hotline.
Spares locations
Critical spares stocked in Shanghai (main), Istanbul (covers EU / Russia / MENA), Dammam (GCC + East Africa). Critical parts ship in 2–5 days.
Remote diagnostics
Remote diagnostics included for 24 months (free), then USD 3,000–6,000/year. Pulls PLC logs, walks your operator through fixes, can take control of HMI to adjust settings remotely. About 70% of issues we resolve without an on-site visit.
Routine maintenance
Routine maintenance cost: ~2–3% of equipment value per year for wear parts. Heavier service (chain replacement on ground rail, bushing renewal on rotary hub) every 5–7 years runs another 5–8%.
Operator training refreshers
Refresher training for new operators: USD 500/day on-site, free remote sessions. Private training video channel with installation guides, troubleshooting, and SOP videos.
Часто задаваемые вопросы
Three layout forms — ground rail, linear, rotary door — how do I pick?
How much factory space and ceiling height do I need?
What heating method should I pick — steam or oil?
What blowing agent / foaming material does each line support?
How many people does it take to run each line?
What about integration with my existing assembly, refrigeration loop, and packaging lines?
How long does installation + commissioning take?
What's the warranty, spare parts, and service coverage?
Can I upgrade from ground rail to add a rotary door line later?
What about cyclopentane safety — is the line ATEX-rated?
Сопутствующие товары
URL-LIN-8
Linear PU Production Line — 6 to 8 Stations
Linear in-line PU foaming for small-to-medium refrigerator factories. 6–8 stations · 30-second cycle · multi-spec mixed-line production · single-head horizontal pouring · ≤190 kW.
URL-RD-8
Rotary Door PU Production Line — 7/8 Stations Hub
Rotary (hub-type) door foaming line dedicated to refrigerator and cabinet DOOR foaming. 7–8 stations · 46-second cycle · compact 33 m² footprint · ~65 kW · fast variety changeover.
URL-IB-2000
Линия производства термоконтейнеров
Логистические и медицинские контейнеры, 10–600 л
Cross-Sell · One-Partner Synergy
Match Your Production Line With Factory Solutions
Pick the factory type that matches your buyer market — we engineer the complete production line for that vertical.
Browse 13 Factory Solutions
Refrigerator / Chef Base / Freezer / Display Cabinet / Commercial Freezer + 8 specialized markets.
Learn morePU Foaming Machines
High-pressure (cyclopentane / 2C / 3C) + low-pressure + spray-foam — pick the foaming line that matches your factory.
Learn moreRefrigerator-Grade Moulds
Vacuum-forming + foaming moulds engineered to your cabinet/door geometry. Custom mould design service available.
Learn moreService & Support
Гарантия и сервис
Выезд на объект возможен во всех регионах, куда мы поставляли проекты.
On-Site Installation
Our engineers fly to your factory to supervise installation, layout verification, and first-run production.
Commissioning + Tuning
Trial run + parameter tuning to your local raw material, climate, and target product spec — until throughput meets contract.
Operator Training
5-10 day on-site training for production team, QC, and maintenance — bilingual manuals + video tutorials provided.
3-Year Warranty + Spares
Core equipment 3-year warranty, electrical 2-year. Spare parts in stock with global express shipment 24h dispatch.
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Turnkey Production Lines for Refrigeration Equipment Factories
"From a Single Pump to a Turnkey Line — One Partner Through Every Tier."
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