LSR Injection Machine One Drives Two, One Feeding System Supply Two Moulding System

A vertical Liquid Silicone Rubber (LSR) injection molding machine is designed specifically for processing two-component liquid silicone rubber (A/B compounds) where the clamping unit operates vertically (top-to-bottom or bottom-to-top).Because gravity works with the orientation rather than against it, vertical machines excel at insert molding (overmolding silicone onto metal, plastic, or ceramic substrate inserts) and multi-station rotary/table production. （Silicone Baby Feeding Set Machine, Baby Production Making Machine, Automatic Silicone Injection Molding Machine, LSR Injection Molding Machine）

 

Core System ArchitecturePrecision Dosing & Mixing Unit: Pumps Component A and Component B at a strict 1:1 ratio, introducing color pigment paste before passing through a static mixer.Cooled Injection Barrel & Nozzle: Unlike thermoplastic machines that heat the barrel, LSR injection units maintain cold-water circulation ($10^\circ\text{C}$–$20^\circ\text{C}$) to prevent premature vulcanization (curing) inside the screw.Heated Mold Platens: Molds are electrically heated ($170^\circ\text{C}$–$210^\circ\text{C}$) so the liquid silicone cures rapidly upon injection.Vertical Clamping Unit: Can feature fixed platens, single slide tables, double slide tables, or rotary tables for continuous loading/unloading.

 

 

A "One Drives Two" (1-to-2) system refers to using one central Liquid Silicone Rubber (LSR) dosing & feeding system to supply two separate injection molding machines simultaneously.Instead of equipping every single molding press with its own expensive dosing pump unit, this architecture centralized raw material delivery—significantly cutting capital expenditure while maintaining automated, precise $A/B$ silicone mixing.

 

Central Pumping & Metering: The hydraulic or electric dosing unit draws Component A and Component B from standard 20L or 200L drums at a precise 1:1 ratio.Pressure Accumulation / Diverter Manifold: High-pressure delivery lines route the pressurized A/B streams through a distribution block equipped with dual directional check valves and pressure-regulating sensors.Independent Pigment & Static Mixing: To keep colors or cure speeds independent, static mixers and color injection heads are usually mounted right before the barrel of each individual molding machine rather than at the central pump.

 

Capital Cost Savings: Cuts initial equipment investment by avoiding the purchase of a second high-precision dosing system.Floor Space Efficiency: Frees up valuable cleanroom or workshop floor space by eliminating one drum-pump footprint.Streamlined Maintenance: Maintenance teams only manage, clean, and purge one set of $A/B$ main pumps instead of two.Consistent Batch Quality: Both molding presses draw from the exact same raw material lot, eliminating batch-to-batch variation between the two machines.

 

Pressure Drop / Cross-Interference: When Machine #1 injects, it takes a large shot of silicone, which can cause a sudden pressure drop at Machine #2.Solution: Install individual line pressure accumulators or high-precision flow-control valves for each machine.Curing / Residence Time in Lines: Long delivery hoses can lead to material stagnation if cycle times differ significantly.Solution: Keep feed lines short, well-insulated, or water-chilled ($15^\circ\text{C}$–$20^\circ\text{C}$) to prevent premature reaction.

 

Best-Fit Applications

High-Volume Identical Parts: Running two identical molds on two machines using the same raw material and color.

Complementary Sets: Running a two-part assembly (e.g., a left and right housing seal) simultaneously on adjacent presses.

Automated Cells: Pairing two vertical LSR machines side-by-side with a single shared robot or operator position in between.