Polyurethane Tire Machine Solutions
Industry Pain Points
01
"Path Dependence" in Molding Processes
Interface issues with traditional processes:
Both compression molding and filament winding involve bonding pre-formed sheets; these processes are complex, require extensive equipment, and consume significant amounts of energy. Additionally, the bond between the layers is not very strong, making delamination likely to occur.
Anisotropy in the injection method:
Although the injection molding process has improved mechanization and product quality, it suffers from anisotropy—that is, the material’s properties differ between the flow direction and the non-flow direction. This affects the uniformity of tire performance under different load directions.
02
The Economic Calculus of Productivity and Costs
Challenges in production line integration:
Take quiet tires as an example: traditional processes require pre-formed polyurethane foam components to be transported to the tire assembly station, involving multiple stages of intermediate storage and manual or semi-automatic operations. This increases tire manufacturing costs by 25% and typically cannot be integrated into existing tire factories.
Material waste and lack of flexibility:
The scrap generated from prefabricated foam parts results in a significant amount of waste-10. At the same time, tooling and color changes take a long time, making it difficult to meet the production requirements for small batches and a wide variety of products.
03
Mechanical Challenges in Molds and Clamping Mechanisms
Clamping force eccentricity:
In traditional designs, the gate is located on the mold; the injection pressure causes the mold to shift, resulting in an eccentric clamping force of -3. This affects product quality consistency and, in severe cases, can even damage the mold.
Clamping mechanism jammed:
Occasional jamming of the screw clamping mechanism prevented pressure relief, causing the equipment to shut down. The improved design incorporates a spring buffer and an open-type bearing housing, which enhances the control accuracy and reliability of the pressure sensor and resolves this issue.
Core of the Solution
Haifeng Automation, a veteran in the polyurethane automation equipment industry, focuses on the core demands of “comprehensive protection, long-lasting durability, green environmental protection, and intelligent efficiency”. It integrates independently accumulated solvent-free/water-based PU technology, precision manufacturing processes, and intelligent quality control systems, integrating core equipment and process solutions into the entire industrial chain of safety shoes. Leveraging technical experience in PU foaming equipment, precision metering systems, and other fields, it achieves four core goals, adapts to multi-scenario needs, and provides integrated “technical solution + equipment implementation” services.
Core Solution Modules
R&D of Scenario-Specific Specialized Materials
Ingredients and formulation：
PU polyurethane raw materials (Material A is generally polyester polyol; Material B is generally isocyanate)
The approximate ratio of the ingredients is 100:30–70.
Raw material preheating temperature: 60–70°C (Note: An oven is required.)
Other ingredients: Demolding agent (function: prevents sticking), pigment (function: for coloring), (MC) dichloromethane (function: cleans the nozzle), (DOP) dioctyl phthalate (function: cleans the tank).
Castability：
Maximum instantaneous flow rate: 200 g/s.
The casting flow rate of the outer tire casting machine is approximately 150 g/s, while that of the inner tire casting machine is about 100 g/s. For example, a small vehicle tire requires approximately 1,200 g of raw material, with around 840 g needed for the outer tire and about 360 g for the inner tire.
Measurement accuracy: ±0.5%.
Solution Advantages:
A high-precision measurement system ensures accurate raw material ratios and precise automated production processes, minimizing manual intervention. The modular design facilitates maintenance and accommodates various tire specifications. The energy-efficient and environmentally friendly design reduces operational costs.
Pipeline Production Process Flowchart
Swivel-arm production flowchart
Production Process Flow
| Process Step | Process Description |
|---|---|
| 1 Raw Material Pre-treatment | Preheat Polyurethane Part A (polyol) and Part B (isocyanate) in a raw material oven to 60-70°C to ensure material fluidity. |
| 2 Mold Preparation | Clean the mold and apply a release agent to ensure the tire can be demolded smoothly. |
| 3 Bead Wire Centrifugation | Place the bead preform into the specialized centrifuge mold. The centrifuge rotates at high speed to generate centrifugal force, evenly pressing the rubber-coated steel wires outward. Gaps are filled with rubber compound, creating a tighter, denser wire arrangement. At the same time, the adhesion between the rubber and the steel wires is strengthened, and the mold closes. |
| 4 Precision Pouring | The pouring machine injects the Part A and Part B materials for the outer tire and inner tire into the centrifuge according to preset ratios and flow rates, where they are mixed in sequence and injected into the mold. |
| 5 Centrifugal Molding | The materials cure under specific pressure and temperature. Centrifugal force ensures even raw material distribution before the material waits for foaming. |
| 6 Demolding & Removal | The mold opens, and the finished tire is removed. |
| 7 Post-Processing | Trimming, quality inspection, packaging, and other subsequent steps. |
Core Equipment Configuration
Pipeline-type equipment
| Non. | Equipment Name | Main Function | Technical Features | Photo Reference |
|---|---|---|---|---|
| 1 | Automatic Tire Pouring Machine (Fully Automatic) | Precisely mixes and pours polyurethane raw materials | The pouring volume required for the outer tire is typically twice that of the inner tire. Adjust according to actual conditions so that the pouring time for both outer and inner tires remains consistent. |  |
| 2 | Tire Mold System | Tire shaping / forming | High-temperature resistant alloy steel, rapid opening/closing design (different molds are used for different tire models). |  |
| 3 | Raw Material Pre-treatment System | Raw material preheating and dehumidification | Automatic temperature control, anti-crystallization design. |  |
| 4 | Automated Conveyor Line | Automatic mold conveying | 60-station design, precise positioning (configurable according to production needs). |  |
Swivel-arm type equipment
| Non. | Equipment Name | Main Function | Technical Features | Photo Reference |
|---|---|---|---|---|
| 1 | Swing Arm Pouring Machine (Semi-automatic) | Precisely mixes and pours polyurethane raw materials | The pouring volume required for the outer tire is typically twice that of the inner tire. Adjust according to actual conditions so that the pouring time for both outer and inner tires remains consistent. |  |
| 2 | Tire Mold System | Tire shaping / forming | High-temperature resistant alloy steel, rapid opening/closing design (different molds are used for different tire models). | |
| 3 | Raw Material Pre-treatment System | Raw material preheating and dewatering | Automatic temperature control, anti-crystallization design. | |
| 4 | Fixed Station System | Fixed mold positioning | 20-station design (configurable according to production requirements). |  |
Production output and production efficiency
Line-based tire production
| Production Mode | Cycle Time | Shift Output (8 hours) | Daily Output (16 hours) | Annual Output (300 days) |
|---|---|---|---|---|
| Small Tires (5-10kg) | Approx. 7 mins | ≈ 550 pcs | ≈ 1100 pcs | ≈ 330,000 pcs |
| Medium Tires (10-20kg) | Approx. 11 mins | ≈ 350 pcs | ≈ 700 pcs | ≈ 210,000 pcs |
| Large Tires (20-30kg) | Approx. 14 mins | ≈ 275 pcs | ≈ 550 pcs | ≈ 165,000 pcs |
Line-based tire production
| Production Mode | Cycle Time | Shift Output (8 hours) | Daily Output (16 hours) | Annual Output (300 days) |
|---|---|---|---|---|
| Small Tires (5-10kg) | Approx. 10-12 mins | ≈ 320 pcs | ≈ 640 pcs | ≈ 288,000 pcs |
| Medium Tires (10-20kg) | Approx. 15-18 mins | ≈ 230 pcs | ≈ 460 pcs | ≈ 192,000 pcs |
| Large Tires (20-30kg) | Approx. 19-23 mins | ≈ 180 pcs | ≈ 360 pcs | ≈ 153,600 pcs |
Key Technical Parameters
Add Your Heading Text Here
| Model | JJF-G100 |
| Max. Movement Range | X, Y=60m/min, Z=24m/min |
| Working Range | X, Y, Z=250, 800, 200 |
| Material Tank Quantity (pcs) | 4 |
| Single Tank Capacity (L) | 280 |
| Metering Pump Displacement (L/R) | 40-100 |
| Metering Pump Quantity (pcs) | 4 |
| Metering Pump Speed (r/min) | 60-280 |
| Metering Accuracy (%) | 0.5 |
| Pouring Head Mixing Shaft Speed (r/min) | 8600±200 rpm |
| Pouring Head Cleaning Method | Automatic |
| Continuous Pouring Count per Cleaning Cycle (times) | ≥80 |
| Max. Output (G/S) | 80-560 |
| Number of Stations | 60 |
| Raw Material Ratio Range | 100:30-100 (A:B) |
| Working Pressure | 0.6-0.8MPa |
| Total Power (kW) | 37.5KW |
Work conditions requirements
| Project | Requirement |
|---|---|
| Workshop Requirements | Flat ground (area approx. 30m × 8m), power supply, compressed air, cooling water, good ventilation |
| Environmental Temperature & Humidity | ≤35°C, relative humidity ≤80%, non-condensing environment |
| Power Supply | 3×380V ± 5%, 50Hz, reliable grounding, total power approx. 100-120KW |
| Compressed Air | 0.7-0.8MPa, dry and oil-free, displacement ≥5m³/min |
| Cooling Water | Clean, low mineral content, max inlet water temperature 20°C, flow rate ≥8m³/h |
| Operators | 5-6 trained operators (including pouring control, mold operation, quality inspection, etc.) |
Full-Process Automated Production System
Integrated production line
Provide customized complete production lines covering all processes from raw material pretreatment to intelligent sorting. Core equipment adopts Haifeng's independently developed imported configuration, ensuring material mixing uniformity ≥98% and stable and reliable operation.
Customized adaptation
Rely on the CAD modeling and 3D printing capabilities of the Mechanical Design Research Institute to quickly produce customized molds and non-standard components, shortening the R&D cycle of new styles to 7-10 days.
Existing equipment transformation
Install Haifeng's intelligent temperature control, precision proportioning, and automated conveying modules to realize the transformation from solvent-based to solvent-free/water-based processes, reducing labor and raw material losses.
Comprehensive Quality Verification and Compliance Assurance
Intelligent quality inspection
Equip Haifeng's independently developed integrated testing equipment, covering thickness, defect, bonding strength, and key performance tests. With an efficiency of ≥50 pairs per minute, defective products are automatically sorted out.
Real-time control
Adopt Haifeng's intelligent production control system to dynamically adjust parameters, controlling the defect rate at 2-3%; integrate environmental monitoring modules to achieve near-zero VOC emissions.
Certification support
Cooperate with authoritative testing institutions to assist in completing multi-standard certifications, providing technical parameters and sample support to help obtain CE and LA certifications and break through high-end market barriers.
Solution Value and Effects
| Dimension | Traditional Process | Haifeng Automation Solution | Improvement Effects |
|---|---|---|---|
| Compliance Rate of Protective Performance | Below 85% | Above 99% | Meet national/international standards and eliminate safety hazards |
| Defect Rate | 10-15% | 2-3% | Reduce by over 75% and minimize rework losses |
| Raw Material Waste Rate | ≥15% | ≤5% | Reduce by 67%, saving over 300,000 yuan in raw material costs per line annually |
| Labor Requirement | 8-10 people/line | 2-3 people/line | Reduce by 75% and lower the risk of operational errors |
| VOC Emissions | Excessive | Near zero | Achieve environmental compliance and obtain international certifications |
| R&D Cycle | 30-45 days | 7-15 days | Shorten by over 60% for rapid market response |
Implementation Process
Demand Research
Technical team conducts on-site investigations to formulate personalized solutions.
Formula and Process Design
Complete customization and feasibility verification relying on the R&D Center.
Equipment Customization/Transformation and Commissioning
Factory completes production, with engineers conducting on-site installation and commissioning.
Small-Batch Trial Production
Technical team tracks and optimizes parameters.
On-Site Installation and Mass Production
Implement the production line and start mass production, providing technical guidance.
Quality Inspection and Certification Support
Assist in completing testing and certification applications.
After-Sales Operation and Maintenance
Provide maintenance and upgrading services relying on the national service network.
