| 摘要 |
The invention is for a die for a cleaning tool for the removal of surplus pieces which are obtained when punching blanks from sheet material. The invention is primarily intended for use when punching cardboard sheet in the production of e.g. packages. In a first operation thereby the pieces (28) are not completely punched out from the sheet (29) but are still to some extent connected to each other and to those parts of the sheet (29) which shall be removed to give holes of various kinds. The surplus pieces (28) which are positioned between the blanks often have the shape of thin strips. Before the continuing handling of the punched blanks these surplus pieces (28) shall be removed. According to the invention for this purpose is used a die (24) having holes (3-5) through which the surplus cardboard pieces (28) shall pass. Parts of the hole (3-5) through which a surplus piece (28) shall pass is covered by tabs of flexible material (7,8) which is present on the upper surface of the die board (24). There is also a corresponding upper die which has prutruding members (25) preferably having the shape of pins or discs, by which means the punched parts are removed from the blank and pushed beyond the tabs (7,8) through the hole (3-5). Thereby that the punched parts are clamped between the prutruding members of the upper die (25) and the flexible tabs (7,8) it is secured that the surplus pieces (28) are entirely freed and removed from the blank. |
