GB606783A - Machine for hot gluing laminated boards and the like - Google Patents

Abstract

606,783. Presses. FAIRWEATHER, H. G. C. (Aktiebolaget A. K. Eriksson). Jan. 18, 1946, No. 1838. [A Specification was la id open to inspection under Sect. 91 of the Acts, July 29, 1946] [Class 140] [Also in Group XXIII] A machine for effecting hot gluing of laminated boards and the like includes a hot press between a charging frame for the workpieces to be operated upon in the press and a receiving frame for the workpieces delivered from the press, and means are provided for transferring a whole charge of workpieces at a time from the charging frame to the press, separate means being provided for withdrawing a whole charge of finished workpieces at a time from the press to the receiving frame. A vertically movable charging frame 2, Fig. la, has a number of shelves 11 on each of which is placed a workpiece comprising a bottom lamina, alternate laminae and foils of glue, and a top lamina, on a metal plate. Each shelf 11 has a space at its centre extending the whole length of the frame so that a pushing device 3 suspended from a rail 13 and movable by an endless chain 16 can pass through the frame 2 and push all the workpieces with the metal plates onto shelves 10 of a press 4. When the pressing operation is completed, the workpieces are withdrawn into a receiving frame 5 similar to the frame 2 by a number of pawls 19 which are carried by an arm 6 suspended from the rail 13 and movable along it by an endless chain 18 and which each have a depending part engaging an opening in one of of the metal plates so that as the arm 6 moves to the left all the workpieces are transferred to the frame 5. When the arm 6 reaches the left hand end of the frame 5, a cam lifts a rod 20 which disengages all the pawls 19 from the metal plates except the bottom pawl, and as the arm 6 continues to move to the left, the bottom workpiece is moved onto a table 7. The arm 6 then moves to the right and the bottom pawl 19 slides over the top of the workpiece on the table and engages the right-hand end of it An electromagnet 21 in the table 7 is now energized and the arm 6 then moves to the left again, carrying the workpiece onto a conveyer 8 but leaving the metal plate held on the table by the electromagnet, which is then de-energized to allow the plate to be returned to the table 1. The frame 5 is then lowered by one step and the next workpiece is withdrawn in the same way by the bottom pawl 19, and so on in respect of all the workpieces.