Patent DE-102011120209-A1 (DE)
Title: Device, useful to generate pourable markings on core or mold for casting of molded part, includes position-variable mechanical units, an elastically deformable element, and a system to produce and transmit restoring force to position units
Inventor: BRAUNE STEFFEN
IPC: B22D17/20
Filed: 2011-12-05
Abstract: The device comprises: position-variable mechanical units (4) arranged at a defined position of a mold illustrating a core or a model, a mold element or a mold box illustrating a mold cavity of a casting mold so that, during the production of the core or the casting mold, bulges (11) or recesses are formed in a surface of the core or the casting mold during a casting process, where the entire bulges or recesses formed by the mechanical units constitute a marking code; and an elastically deformable element (8) arranged in a direction of the surface of the core or a surface of the casting mold. The device comprises: position-variable mechanical units (4) arranged at a defined position of a mold illustrating a core or a model, a mold element or a mold box illustrating a mold cavity of a casting mold so that, during the production of the core or the casting mold, bulges (11) or recesses are formed in a surface of the core or the casting mold during a casting process, where the entire bulges or recesses formed by the mechanical units constitute a marking code; an elastically deformable element (8) arranged in a direction of the surface of the core or a surface of the casting mold before the mechanical units formed by the bulges or recesses; a system for producing and transmitting a restoring force configured to position the mechanical units; and a control system for adjusting the marking code, where the control system is connected to the system for producing the force. The mechanical units are designed as a movable plunger within a base body between two positions, where the plunger is moved back and forth by the system to produce and transmit the force between the two positions. The deformable element: determines the surface of the core or the surface of the mold cavity of the casting mold; and comprises inlet openings formed as blind holes (10), where the inlet openings are arranged corresponding to channels (2) of the base body leading the plunger, and the plunger is engaged into the inlet openings. A bottom of the blind holes is elastically deformable by the plunger. The plunger in all positions of its to-and-fro movement is partially engaged into the blind holes. The bottom of the blind holes is not covered by the plunger in a deformed state. The surface of the deformable element facing away from the blind holes is flat. The blind holes are convexly curved so that the surface of the deformable element is formed corresponding to a bathing of the blind hole of the recess. A coupling element is arranged between the plunger and the bottom of the blind hole. Each plunger is positionable in three positions, where the bottom of the blind hole is elastically deformed in a first advanced position of the plunger such that the surface of the deformable element, which is outwardly arched (concave) in a second advanced position and inwardly arched (convex) in a third advanced position, determines the surface of the core or the surface of the mold cavity of the casting mold corresponding to the bottom of a blind hole.