SYSTEM FOR SLUICING, METERING AND INJECTION-MOULDING MATERIAL

• Main Authors: SCHÜTZ, Christine, SCHMIEMANN, Achim, QUABECK, Till, MÜLLER, Michael, HOMEY, Eric, HAIN, Jörg
• Format: Patent
• Language: English; French; German
• Published: 25.01.2017
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; PACKING; PERFORMING OPERATIONS; PNEUMATIC TUBE CONVEYORS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SHOP CONVEYOR SYSTEMS; STORING; TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

System for sluicing, metering and injection-moulding material (M), wherein the system comprises a material sluice (10) for sluicing material between regions at different pressure levels, a sluicing passage (12), which has a passage inlet (13) for connecting to a first region (B1), at a first pressure level (P1), and a passage outlet (14), for connecting to a second region (B2), at a second pressure level (P2), which is different from the first pressure level (P1), wherein the passage inlet and the passage outlet are at a distance from one another in a longitudinal direction (LR) of the sluicing passage, and has a piston arrangement (30), which is designed to define a sluicing chamber (12.1) in the sluicing passage such that the sluicing chamber has two longitudinal ends opposite from one another in the longitudinal direction of the sluicing passage and sealed in a gastight manner from the sluicing passage, wherein the piston arrangement can be made to move along the sluicing passage such that the sluicing chamber can be displaced between a receiving position, in which it is in connection with the passage inlet and is separated in a gastight manner from the passage outlet, and a discharging position, in which it is in connection with the passage outlet and is separated in a gastight manner from the passage inlet. The material sluice is of a simple construction and reliably prevents an exchange of gas between the regions at different pressure levels.