The dual-station vacuum machine for liquid silicone rubber (LSR) is a specialized device for degassing and venting. Its core feature is a dual-chamber independent vacuum system, capable of processing two sets of molds/material cups simultaneously, doubling the efficiency of a single-station system. It is widely used in the production of silicone labels, sealing rings, watch straps, and medical accessories. (PVC Machine,Pvc Vacuum Machine, Vacuum Machine, Silicone Vacuum Machine, blending equipment, dosing machine, batching machine, compounding machine, vacuum defoaming machine, raw material mixing and blending system)
Core Structure and Principle:
Dual Independent Vacuum Chambers: The left and right chambers can be independently switched, evacuated, and timed without interference; simultaneous prototyping and mass production are possible.
Vacuum System: Equipped with dual vacuum pumps (commonly 2X-15/2X-30), achieving an ultimate vacuum of -0.095 to -0.1 MPa, with rapid evacuation in 3–5 seconds.
Control System: PLC + digital display panel, allowing setting of vacuum level, evacuation time, and pressure holding time; includes emergency stop and overload protection.
Cavity Material: Vacuum chambers are made of 304 stainless steel, corrosion-resistant and non-contaminating to silicone; the frame is made of carbon steel with powder coating.
Workflow: Mold placement/molding pouring → Capping → Vacuuming → Degassing (1–5 min) → Vacuum breaking → Cap opening and part removal.
The parameter of Jinyu Machinery's vacuum machine:
Power Supply: 380V/50Hz, Power 2.2kW
Vacuum Chamber Dimensions: Approx. 400×400×100mm (customizable)
Vacuum Pump Model: XD series rotary vane silent vacuum pump
Pumping Rate: 15L/S, Ultimate Vacuum: -0.1MPa
Dimensions: 1120*620*1100mm, Weight approx. 250kg
Control Method: Dual-station independent electronic control, digital display timing
Core Advantages:
Double Efficiency: Dual-station parallel operation increases production capacity by approximately 100% per unit time. Two stations serve two purposes: one can be used for direct vacuuming within the mold, and the other for vacuuming within the material cylinder, suitable for mass production of small, medium, and large parts.
Thorough Degassing: High vacuum + pressure holding eliminates micro-bubbles inside the silicone, improving product strength, transparency, and sealing.
Flexible Production: Dual independent chambers allow simultaneous processing of different molds and colors of silicone, suitable for multi-variety, small-batch orders.
Easy Operation: One-button start, automatic vacuuming, pressure holding, and vacuum breaking; even beginners can operate it in 10 minutes.
Durable and Easy to Maintain: Stainless steel chamber; vacuum pump only requires periodic oil changes; low failure rate.
Application Scenarios:
Silicone Products: Trademarks, logos, wristbands, watch straps, sealing rings, miscellaneous parts.
Mold Casting: Degassing after filling the liquid silicone mold prevents material shortages and air bubble marks after molding.
Multi-Component Materials: Degassing and mixing of LSR, epoxy resin, PU, etc.
Industries: Apparel accessories, electronics, medical, gifts, automotive parts, etc.
Selection Points:
Vacuum Degree: Prioritize ultimate vacuum ≥ -0.095MPa to ensure microbubble removal.
Cavity Size: Allow for the largest commonly used mold size + 50mm to avoid insufficient space.
Vacuum pump configuration: Dual independent pumps, pumping speed ≥15L/s, ensuring rapid evacuation.
Material: The vacuum chamber must be made of 304 stainless steel to prevent rust and contamination of the silicone sealant.
Control precision: Digital display timing + vacuum level display, supports parameter memory for easy model changeover.
