Patent GB-887530-A (GB)
Title: An improved type-casting machine
IPC: B41B11/52
Filed: 1959-04-30
Abstract: 887,530. Type-bar-making machines. NEBY TREU-UNTERNEHMEN REGISTRIERT. April 30, 1959 [April 30, 1958], No. 14705/59. Class 100(3) A hand-setting casting machine for headline slugs in sizes of multiples of 9 cm. comprises a stationary crucible, means for locking the matrices, mould and injection nozzle assembly, and means to provide for (1) lifting of the machine head, matrix-carrying frame and mould, the frame and mould being virtually disposed, (II) bringing the frame with a horizontal motion near to the mould, and into engagement with the mould before the latter has reached its maximum height, compensating spring means being brought into action, (III) tightly locking together the matrices, mould and nozzle, arranged along a horizontal axis, by a screw and nut unit and interposed adjustable clamping means, (IV) closing an electric circuit to predetermine the control of a piston for injection of molten metal, (V) actuating the injection unit through a system of levers and return means to produce a nearly instantaneous shot of metal into the mould and matrices, (VI) releasing the matrix-mould-nozzle assembly, (VII) lowering the mould and cast slug to a position midway between the highest and lowest positions of the matrix frame, (VIII) planing and burring the slug, and (IX) bringing forward the pincers for dropping the slug into a collecting tray, all said means being fitted on a single frame, powered by a single motor, readily accessible and easily serviced. The matrices 206, Figs. 1, 4 and 11, are set by hand in a frame 205, Figs. 10 and 11, and made up to a length of forty ems with quads and spaces, being clamped together by a micrometer screw 67. The frame is then placed in a head 200. A motor 51 l drives a shaft 151, several cams on which operate all the moving parts of the machine. In operation, the head 200, Fig. 10, and the mould 207 are raised together by means of a slide 178, and before the vertical movement is completed, the head is moved horizontally towards the mould by means of a slider 197. Through a damper 306, Fig. 4, a screw 321 is rotated to pull a lever 332 against a pusher 203, which forces the frame 205 against the mould 207, and both against the injection nozzle, Figs. 10 and 13, of the stationary metal pot 337. This action closes a microswitch 393 to energize an electromagnet 395, Fig. 6, and release a lever 374 for upward movement. A cam 371, Fig. 6, releases a cam follower 372 to allow the lever 374 to move upwards, but the movement is prevented by a tooth 412 on a lever 408, until the latter is moved by a pin 405 on the cam engaging a lever 406, when a spring 418, Fig. 13, pulls a rod 376, pivoted on the lever 374, sharply upwards, provided the magnet 395 has been energized, to actuate the metal pump 387 and deliver the metal to the mould. A slide 267, Fig. 16, carrying a knife 270 for trimming the back of the cast slug, is moved to the right to trim the slug 280. The mould is then moved downwards to ejection position, where the slug is ejected by a camoperated pusher, and gripped by pincers 276 on the slide 267. On return movement of the slide 267, the slug is knocked against a fixed stop, thus being withdrawn from the pincers and dropped into a collecting tray. The matrix frame is moved downwards at the same time as the mould by the slide 178, to unloading position, where the frame is manually withdrawn from the head 200 for distribution of the matrices.