GB890434A - An improved method and apparatus for assembling box lids on box bottoms - Google Patents

Abstract

890,434. Endless conveyers. ANDREW & SUTER Ltd. Oct. 21, 1959 [Oct. 21, 1958], No. 33690/58. Class 78 (1). [Also in Group XVII] A machine for telescoping lids over box bodies comprises a conveyer for the lids which converges with a conveyer for the bodies and has means for turning the lids over through 180 degrees, and also means preventing the front part of the lid descending too far over the walls of the body so that all four walls of the lid engage outside the four walls of the body before the lid and base are moved into the fully closed position. The conveyer 2 for the bodies and the conveyer 3 for the lids are belt-driven from an electric motor 6. The conveyer 3 delivers the lids to a shoot 16, a driven belt 24 protruding through a rectangular cut out in the base of the shoot. The lids are delivered from a lid wrapping machine by a transversely positioned conveyer 54 (Fig. 3) and by means of an inclined guide-plate 55 are stood on one of their sides on the conveyer 3 (see Fig. 3). A guide 68<SP>1</SP> inclined across the conveyer 3 and another guide 61 turn the lids over so that their tops are uppermost. At the exit end of the shoot 16 a brush 36 checks each lid until its forward end is engaged by a box on the conveyer 2 (Fig. 6). The box draws the lid on to guides 41 which position the lid and box in parallel relation after which the lid and box pass beneath a brush 46 which presses them together and the closed boxes are delivered to a platform 86. A resiliently mounted roller 38 (Fig. 6) checks the lid which is immediately behind the lid being fitted to a box. The boxes on the conveyer 2 are checked by a brush 51 until a slat 53 on the conveyer engages the box and forces it past the brush, the slats thereby space the boxes on the conveyer. Guide rails at the sides of the two conveyers are adjustable to accommodate different size boxes and lids. The angle of the shoot is adjustable by screw means. In another embodiment (Fig. 8) a brush 144, which corresponds to the brush 36, is connected by a linkage to one of two brushes 152, 157 which grip the lateral sides of the lids. When a box body draws a lid past the brush 144, the linkage moves the brush 152 and releases the next lid. In this embodiment the box body and lid are finally aligned by rollers 163, 164, respectively (Fig. 10), and a vertical rod 197 realigns a lid that is misplaced on the conveyer. In a modification, the brushes 152, 157 may be replaced by guide plates.