DEKUMA RC SERIES
AUTOMOTIVE SEALING STRIP CORNER INJECTION AND MOLDING MACHINES
Dekuma RC Series automotive sealing strip corner machines are specialized rubber injection and molding systems developed for the high-precision production of corner and joint components used in automotive door, window, and trunk sealing strips. The RC series is specifically designed for applications that require dimensional accuracy, superior surface quality, and mechanical strength in the corner areas of EPDM and similar elastomer-based sealing profiles.
Developed based on Dekuma's decades-long experience in the automotive industry, the RC series is widely preferred by OEMs and Tier-1 suppliers thanks to its high level of automation, stable process control, and suitability for mass production.
AUTOMOTIVE SEALING STRIP CORNER PRODUCTION TECHNOLOGY AND OPERATING PRINCIPLE
RC series machines operate on the injection molding principle to form the required geometry at the corner areas of extruded sealing profiles. The profile ends are placed into the mold, and rubber material is injected precisely to fill the corner region.
Main process steps:
• Placement of the extruded sealing strip profile into the machine
• Fixing of the profile ends inside the mold
• Plasticization of the rubber compound
• Precise injection into the corner area
• Vulcanization and curing
• Automatic or semi-automatic part removal
This process ensures excellent sealing performance, aesthetic appearance, and mechanical integrity at sealing strip corners.
STRUCTURAL DESIGN OF RC SERIES MACHINES
Dekuma RC series machines are specially engineered with the precision and repeatability requirements of automotive sealing strip production in mind.
Structural features include:
• High-rigidity steel machine frame
• Vertical clamping structure
• Special mold design suitable for profile fixation
• Precise platen parallelism and clamping force control
• Durable mechanical construction designed for long-term operation
This structure maintains process stability even during high-volume production.
TECHNICAL AND NUMERICAL SPECIFICATIONS
Typical technical parameters of Dekuma RC series machines are provided within the following ranges:
Clamping Force
• 80 tons - 200 tons
Injection Unit
• Injection volume: 50 - 300 cm³
• Injection pressure: 1200 - 1800 bar
• Injection speed: multi-stage, adjustable
Screw Diameter
• 30 mm - 60 mm
Plasticizing Capacity
• 5 - 25 kg/hour
Mold Opening Stroke
• 300 - 600 mm
Platen Dimensions
• 400 × 400 mm - 600 × 600 mm
Heating System
• Multi-zone barrel heating
• PID-controlled temperature management
These values can be customized according to the sealing strip type and corner geometry.
SERVO HYDRAULIC SYSTEM AND PROCESS STABILITY
The servo hydraulic system used in RC series machines enables highly precise control of injection and clamping movements.
Key advantages:
• Low energy consumption
• Stable injection pressure
• Low noise level
• Long system service life
The servo-controlled structure increases dimensional consistency in corner areas and minimizes scrap rates.
AUTOMATION AND LINE INTEGRATION
Dekuma RC series machines can be fully integrated into automotive sealing strip production lines.
Supported systems include:
• Automatic profile feeding systems
• Robotic part removal and placement
• Conveyor line integration
• Vision inspection and quality control systems
• Production data collection and monitoring
These features ensure high efficiency and consistent quality in mass production.
APPLICATION AREAS
RC series machines are widely used in the following automotive applications:
• Door sealing strip corners
• Window and frame sealing strip corner joints
• Trunk and hood sealing strip corner parts
• Custom-designed automotive sealing profiles
These components are critical for vehicle water, dust, and wind insulation performance.
ADVANTAGES OF THE DEKUMA RC SERIES
• Design dedicated to automotive sealing strip corner production
• High surface quality and dimensional accuracy
• Low scrap rates
• High production repeatability
• Compatibility with automation and line integration
• Long machine service life and global service support
