Device and method for manufacturing plastic containers
AssigneeKocher-Plastik Maschinenbau GmbH
InventorMichael Schnell
Life of this patent
Estimating the term…
Abstract
A device for producing plastic containers (10) by a molding, filling and sealing process includes a molding device (16) having individual molding tools (18), which can be moved repeatedly relative to one another from an open receiving position into a molding sealing position, and includes an extrusion unit (12), which can be used to insert at least one extruded plastic hose (14) into the open receiving position of the molding tools (18). A traversing unit (20) moves the extrusion unit (12) in conjunction with each extruded plastic hose (14) in opposite directions with respect to the molding device (16), which is stationary in every position of the molding tools (18).
Claims9
A device for producing plastic containers by a molding, filling and sealing process, comprising:
- a mold having individual molding tools movable repeatedly relative to one another in opposite directions between an open receiving position and a molding sealing position by a mold traverser coupled to the molding tools, the mold being stationary in every position of the molding tools, the molding tools of the mold being subdivided as pairs into groups as a main mold for molding a container body of a container and a head mold for molding a head part of the container;
- an extruder capable of producing extruded plastic hose into the open receiving position of the molding tools, the main mold having an inlet end facing the extruder for receiving the extruded plastic hose and an outlet end facing away from the extruder through which the container produced in the mold is discharged;
- an extruder traverser being coupled to and moving the extruder with the extruded plastic hose in opposite directions transverse with respect to the mold;
- a gripper being insertable into the outlet end of the main mold and gripping at least part of the container produced in a preceding production step in a detachable manner at least when the head mold is closed while the main mold is open;
- and
- an actuator configured to move the gripper from a lower end position below the outlet end of the main mold to an upper end position above the outlet end of the main mold and below the head mold.
A method of manufacturing plastic containers, comprising method steps of:
- continuously extruding a vertically oriented plastic extruded hose by an extruder movably vertically up and down in a direction of a mounting space of a stationary molding tool;
- moving the extruder in the direction of the molding tool when the molding tool is opened along a distance substantially equal to a total height of a finished plastic container or bringing a part of the extruded hose being continuously extruded into a molding position in a receiving space of the molding tool;
- molding and sealing the part of the extruded hose while forming the plastic container by actuating the molding tool and simultaneously moving the extruder after being lowered in an opposite direction while increasing the axial distance of the extruded hose to the molding tool;
- continuously producing a plastic container chain by passing through process steps the moving of the extruder and the molding and sealing the part of the extruded hose at least twice;
- inserting a gripper into an outlet end of a main mold of the molding tool facing away from the extruder and opposite from an inlet end of the main mold facing the extruder, the gripper gripping at least part of the container produced in a preceding production step in a detachable manner at least when a head mold of the molding tool is closed while the main mold is open;
- and
- separating each plastic container from a formed plastic container chain.
Dependencies are inferred from the claim text.