Patent EP-2052779-A1 (EP)
Inventor: OKYUA YASUAKI
IPC: B02C1/04
Filed: 2006-07-18
Abstract: In a background art, one side and other side tool apparatus (casting breaking apparatus) upper and lower faces of which are opened are constituted by one side and other side tool support bases, one side and other side tool posts provided at the one side and the other side tool support bases, a number of pieces of one side and other side tools in a ridge shape projected from the one side and the other side tool posts respectively in a zigzag shape and brought into a fitting relationship, and movable means (cylinder) for making the other side tool post movable, and  characterized in that  sliding faces provided at both sides of the other side tool support base and/or the other side tool post are advanced and retreated along an inner face of a side plate. Further, explaining an operation (method) of crushing and breaking of the casting breaking apparatus, in retreating the other side tool post, a casting waste is thrown from a throwing opening (throwing port) formed between the other side tool post and the one side tool post, and the casting waste is broken by utilizing a fitting relationship between the other side tool of the other side tool post advanced by the cylinder and the one side tool of the one side tool post. The sliding face of the other side tool post is advanced or retreated to be brought into sliding contact with the side plate of the breaking apparatus. By the advance, the casting waste thrown to the casting breaking apparatus is broken, and by the retreat, a broken piece of the broken casting waste is discharged from a discharge port formed between the other side tool post and the one side tool post by natural dropping. 
     Further, according to the kind of apparatus, the other side tool post is brought into sliding contact with the side plate when the other side tool post is made to be movable, and there is a probability of generating wear at the face to be slid (sliding face). Further, when a particle, or a small piece of the casting waste invades a gap between the other side tool post and the side plate, a problem of accelerating a degree of the wear is conceivable. 
     In view of the above-described, according to the invention, by constituting other side tool support base and/or other side tool post mounted to a casting breaking apparatus constructed by a constitution in which both sides of other side tool support base and/or other side tool post are formed with sliding faces brought into sliding contact with both side plates, the sliding face is formed with a cut recess streak reaching upper and lower sides of the sliding face, the cut recess streak is subjected to overlay welding, and an overlay weld streak piece substantially in flush with the sliding face is formed by polishing means for making an overlayer of Lhe overlay welding substantially in flush with the sliding face, it is intended to make wear of the sliding face as less as possible, or, when a particle or a small piece of the casting waste invades a gap between the other side tool support base and/or the other side tool post and the side plate, a degree of wear is accelerated, and therefore, it is intended to avoid the wear. 
     Further, according to the invention, an axially fixed portion provided at the side plate of supporting the other side tool support base is constituted by a bearing provided at the side plate, a thin-walled ring-like metal provided at an inner peripheral face of the bearing, and dust seals provided at both ends of the inner peripheral face of the bearing, and it is intended to protect the axially fixed portion of the other side tool support base on a movable side applied with a load, or swiftly execute repair in failure.