Auto Buffer PU Elastomer Casting Machine
Low-pressure elastomer casting system for automotive buffer blocks, featuring independent modifier tank for resilience and hardness adjustability
±0.3% Accuracy
Ratio precision
loT Ready
Remote monitoring
30% Energy Save
vs.conventional
2-4 Components
Flexible config
Product Overview
Suitable for mass production of polyurethane buffer blocks for passenger vehicles and commercial vehicles, including suspension buffer pads, limit buffers, chassis anti-collision cushions, and rebound components.
This low-pressure PU elastomer casting machine is purpose-built for the mass production of automotive buffer blocks. The 2A2B two-component system includes an independent modifier tank for resilience adjustment, supporting flexible hardness control (35~65 Shore A) compatible with buffer blocks for various vehicle types. Using solid/microcellular elastomer technology, the finished parts feature dense structure, shock absorption, compression resistance, wide temperature tolerance, and low compression set. The dedicated low-pressure elastomer process with gentle mixing prevents overheating, producing pore-free parts with resilience ≥85% and stable performance without cracking or deformation in long-term use. Precise temperature and dosing control ensure minimal deviation in hardness and density between batches, meeting high-precision automotive requirements. With low power consumption, easy maintenance, and 24-hour continuous operation capability, the machine is ideally suited for standardized automotive production lines and meets the requirements of automotive assembly lines and OEM quality standards.
Operation Workflow
Raw Material & Modifier Preparation
Prepare polyether polyol (Tank A) and isocyanate (Tank B) according to the target mix ratio (100:40~90). Select appropriate resilience modifier and load into the independent modifier tank based on target hardness requirements (35~65 Shore A).
Tank Loading & Temperature Setting
Load polyol into Tank A and isocyanate into Tank B. Set Tank A temperature to 25~55°C and Tank B to 20~45°C. Preheat the mold using the external mold heater to 40~80°C.
Metering, Mixing & Low-Pressure Casting
The PLC-controlled dosing system (accuracy ≤±0.3%) dispenses materials precisely. The mixing head operates at 1500~3500 r/min for gentle, low-pressure mixing without overheating. The dosing rate is adjustable within 50~1200 g/s, with shot weight per mold of 50~500 g/mold under casting pressure of 0.3~1.5 MPa.
Curing & Demolding
Allow the buffer block to cure in the mold at controlled temperature. The typical cycle time is 90~150 seconds per mold. After curing, demold the finished buffer block.
Request a Customized Automotive Buffer Casting Solution
Get a QuoteTechnical Specifications
Standard configuration parameters for the automotive buffer PU casting machine. Customizations are available upon request.
| Technical Parameter | HF-LPUE-2A2B-Auto-Buffer |
|---|---|
| Dosing Rate | 50～1200 g/s |
| Shot Weight Per Mold | 50～500 g/mold |
| Mix Ratio | Polyether Polyol : Isocyanate = 100:40~90 |
| Tank Capacity | 200L / 250L (optional, per tank) |
| Mixing Head Speed | 1500～3500 r/min |
| Dosing Accuracy | ≤±0.3% |
| Metering Pump Flow | 0.5～10 kg/min |
| Tank System | 2A2B two-component system + independent modifier tank for resilience |
| Temperature Control | Tank A: 25~55℃; Tank B: 20~45℃ |
| Mold Temperature Control | 40~80℃ (external mold heater) |
| Casting Pressure | 0.3～1.5 MPa |
| Cycle Time | 90~150 sec/mold |
| Cleaning System | Pneumatic liquid cleaning + automatic air purge |
| Power | 5.5～12 kW |
| Control System | PLC touch control + formula storage |
| Application System | Two-component polyurethane elastomer (CPU) / microcellular elastomer system |
| Warranty | 1 Year |
| Certification | CE, ISO9001, Complies with general specifications for automotive parts production |
Key Features & Advantages
Engineered for precision, consistency, and efficiency in automotive buffer block mass production.
Dedicated Low-Pressure Elastomer Process
Gentle mixing prevents overheating, producing pore-free parts with resilience ≥85%. Performance remains stable without cracking or deformation in long-term use.
Independent Modifier Tank for Hardness Adjustment
Supports adjustable hardness from 35~65 Shore A, compatible with buffer blocks for various vehicle types from passenger cars to commercial vehicles.
Precise Temperature & Dosing Control
Ensures minimal deviation in hardness and density between batches, meeting the high-precision requirements of automotive OEM production.
Solid/Microcellular Elastomer Technology
Finished parts feature dense structure, shock absorption, compression resistance, wide temperature tolerance, and low compression set for reliable automotive applications.
Low Power Consumption & Easy Maintenance
Designed for energy efficiency and simple maintenance, supporting 24-hour continuous operation for standardized automotive production lines.
Intelligent PLC Touch Control with Formula Storage
PLC touch control interface with formula storage simplifies operation, reduces manual errors, and enables rapid changeovers between different buffer block specifications.
Optimize Your Automotive Buffer Block Production Line
Our engineering team specializes in automotive PU casting solutions. Contact us to discuss your specific buffer types, hardness requirements, and production capacity needs.
Application Scenarios
Suitable for mass production of polyurethane buffer blocks for passenger vehicles and commercial vehicles, including suspension buffer pads, limit buffers, chassis anti-collision cushions, and rebound components. Using solid/microcellular elastomer technology, the finished parts feature dense structure, shock absorption, compression resistance, wide temperature tolerance, and low compression set. They meet the requirements of automotive assembly lines and OEM quality standards.
See It in Action
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