| 摘要 |
<p>799,123. Trimming machines. MULLER, H April 3, 1957 [May 9, 1956], No. 10885/57. Class 31 (1). [Also in Group XXX] A machine for automatically trimming the front and opposite side edges of stapled booklets comprises a vertically reciprocable block 5 provided with a pair of knives 8 co-operable with counter-knives 12, 13 for trimming the opposite side edges of each booklet at a first trimming station and with a knife 10 co-operable with a counter-knife 14 for trimming the front edge of each booklet at a second trimming station, conveyer belts 15, 21 for carrying the booklets, stapled edges leading, towards and away from the trimming stations, and vertically reciprocable abutments 26, 27 for arresting the booklets at the first and second trimming stations respectively. The block 5 is reciprocated from a motor-driven shaft 4 by means of cranks 7. While the booklets are being conveyed by the belts 15 they are aligned by means of dogs 18 on chains 17, moving slower than the belts 15, and by means of converging belts 19 driven from shafts 20. The belts 15, 21 and chains 17 are driven by means of a common driving belt 25 passing round a pulley 24 on the shaft 4. Pressure rollers 23 act to force the booklets against the belts 15, 21'at the intervals between the trimming operations. The pressure rollers 23 and abutments 26, 27 are carried by a beam 28 which is reciprocated vertically by means of a cam 29 on the shaft 4. Adjustable brushes 31, 32 prevent the booklets from moving backwards at the trimming stations.</p> |
