Abstract: A core assembly for an injection molding-machine. The assembly includes a movable mold half and a stationary mold half clamped onto each their platen of an injection molding-machine. It also includes an actuator for advancing and retracting during operation at least one core into and from a mold cavity in a mold. The actuator is connected to a core-carrier for carrying the at least one core. The core-carrier is slidingly mounted to and partly projecting from a guidance connected to one of the mold halves. A first hole is formed in the closed mold for slidingly receiving the projecting part of the core-carrier. The core assembly allows products to be continuously molded with an extremely high degree of accuracy, and it is simple, inexpensive and easy to mount and maintain while also allowing for positioning of cores at various angles relative to the mold.
Type:
Grant
Filed:
February 5, 2010
Date of Patent:
November 19, 2013
Assignee:
Etervind AB
Inventors:
Ernst Gösta Robert Axelsson, Johan Emil Rinman, Janarne Wetterheim
Abstract: An injection-moulding system for an injection-moulding machine including a clamping assembly, a temperature-adjusting system, and an ejector. The clamping assembly comprises two horizontal beams for mounting on the platens of the injection-moulding machine and two vertical beams for crosswise mounting on the horizontal beams in multiple positions. The clamping assembly allows dies of various sizes to be clamped in one and the same machine. The temperature-adjusting system includes at least one cooling tube for detachable insertion into a blind hole formed in the die. The cooling tube is attached to coolant conduits which are permanently attached to a source of coolant. Dies can thereby be replaced quickly and easily without spilling any coolant. The ejector is adapted to eject the cooled product after opening of the die. The injector pins are in an inexpensive way glued to the ejector plate. Use of the injection-moulding system provides considerable cost savings over conventional devices.