Improvements in or relating to a transfer device for charging a workpiece to a workpiece holder

摘要

937,322. Machine tool details. P. L. GLOCKER. April 8, 1960 [April 10, 1959], No. 12505/60. Class 83 (3). A work-transfer device for feeding articles W from a supply 1, Fig. 1, to a chuck or similar work-holder 2 comprises an oscillatable bracket 4 carrying a magazine 9. The bracket is moved by a connecting-rod 5 about the pivot 3 and during working operations occupies the broken line position where the magazine 9 is replenished from the supply 1. The magazine is exchangeably secured to the bracket by straps 10 and its lower part opens into a circular chamber 12, Fig. 2, carrying a plunger 15 the front blankengaging part of which is freely rotatable relative to the rear part. The latter is grooved for engagement by screws 22, Fig. 1, carried at the ends of arms 21 secured to a block 23 pivoted about a pin 24. An arm 25 also secured to block 23, Fig. 2, is adapted to be moved by an air-operated plunger 27. When a new workpiece is to be fed to the chuck 2, Figs. 1 and 2, the bracket 4 is rocked over against a stop 7 to bring the chamber 12 into line with the chuck as shown in Fig. 1. A workpiece W has been fed by gravity into the chamber 12, Fig. 4, and on feed movement of the plunger 15, is forced past a pair of spring-retaining fingers 18 into the chuck, the magazine is then moved away about the pivot 3. Pneumatic means may be used to feed the workpieces through the magazine and the plunger 15 may be moved hydraulically or electrically. The pivoting magazine part may be continually connected to the supply 1 by flexible means.