GB959737A - Tape applying mechanism - Google Patents

Abstract

959,737. Tape applying mechanisms. LOVESHAW CORPORATION. Sept. 21, 1962 [Sept. 21, 1961], No. 36067/62. Heading B8F. In a machine for applying tape 35, Fig. 1, to cartons C advanced on a conveyer 21a, the upper and lower tape applying devices 14 each comprises two pairs of pivoted arms 50, 51 and 52, 53, Fig. 2, provided with tape applying rollers 54, each pair of arms being mounted on a common pivotal axis and spring means, or, as shown, fluid pressure cylinder means 112 acting through an operating unit 90 to urge the arms of each pair in a closing direction towards one another but permitting opening of the arms during application of the tape. The pivoted arms are also caused to move together to an appropriate position defined by a stop 108, Fig. 2, for initial engagement with an advancing carton at the corner thereof as shown in Fig. 1. The fluid pressure cylinder 112 is of the impositive type and is suspended in a floating position between two operating units 90, 110, the cylinder 112 having a finger 113 pivoted at 114 to the unit 90 whilst the piston rod 115 is pivoted at 117 to the unit 110, the units 90, 110 being mounted for movement about pivots 91, 111 respectively. On supply of fluid pressure through the pipe 120, the unit 90 is caused to move anticlockwise about its pivot 91 and by means of an arrangement of sprocket and chains, a torque is applied on each arm 52, 53 so that they move or tend to move towards each other but the torque applied to one arm 52 is greater than that applied to the other arm 53 so that when the arms are free of a carton, they swing together in a clockwise direction until they meet the stop 108. The arms 50, 51 are acted on similarly by the unit 110 at the same time. The sequence of tape applying operations is indicated in Figs. 6a, 6b, 6c (not shown).