Press for perforating and trimming boards of filamentary materia

Details Press for perforating and trimming boards of filamentary materia Press for perforating and trimming boards of filamentary materia

1975-02-14

1976-06-15

Simpson, Othell M.

Cutting

Tool engages work during dwell of intermittent workfeed

Work feed means controlled by means mounted on tool or tool...

83157, 83620, B26D 520

Patent

active

039629414

ABSTRACT:
A mat of filamentary material is loaded onto a transport tray formed with an array of holes having a predetermined inside diameter. The transport tray is displaced between an upper and lower platen of a press. The upper press platen is provided with an array of downwardly extending pins having an outside diameter much smaller than the inside diameter of the holes in the transport tray, each pin being alignable with a respective transport-tray hole. The lower press platen is formed with an array of upstanding tubular nipples having an outside diameter smaller than the inside diameter of the transport-tray hole and an inside diameter corresponding to the diameter of the pin. Each nipple is arrayed beneath a respective hole in the transport tray and therefore beneath a respective pin so that as the upper platen descends the pin punches a hole in the mat using the nipple as a die. The upper end of each nipples lies in the plane of the upper surface of the transport tray. In addition a peripheral blade is provided on the upper platen to trim off the edge of the mat as the upper platen is lowered.

REFERENCES:
patent: 1454841 (1923-05-01), Allen
patent: 1510008 (1924-09-01), Lumb
patent: 2380123 (1945-07-01), Smith
patent: 2818923 (1958-01-01), Pascuale et al.
patent: 3229556 (1966-01-01), Jensen

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