GB1058473A - A device for manufacturing cap shaped capsules - Google Patents

Abstract

1,058,473. Forming metal foil capsules. INDUSTRI™LE MAATSCHAPPIJ ARNHEM NV. May 29, 1964 [May 29, 1963], No. 22382/64. Heading B6J. Apparatus for producing cap shaped articles from thin metal foil comprises a frame 1 with punch 2 and die 3, the punch being mounted on a bearer element 7 and surrounded by a fixed cutting ring 4 which co-operates with a cutting member 5 capable of movement together with the die, wherein the element is a detachable sleeve 7 with an outer self centring face 8 of a conical shape, having the same length as the sleeve which is greater than half the sleeve diameter, the sleeve fitting in a bearing 9 provided in the frame and the cutting ring being secured to the sleeve. The punch 2 comprises an interchangeable punch disc 18 attached to a pressure element 19 non-rotatably located in a guide 11 but slidably removable therefrom after first unscrewing a portion 30 from a portion 31. The die comprises member 5 secured to an element 32 reciprocable in the frame 1, a pair of spring biased rings 33, 34 and a pad 38 of, e.g., rubber. The element 7 is removed from the frame to facilitate servicing of the punch and die assemblies. Scrap pieces of metal passing a spring biased ejector ring 12 may be discharged through apertures 39, 40. In operation, during the reciprocation of the element 32 the member 5, in co-operation with the ring 4, cuts a disc from the foil passing through the apparatus, further movement of the die deforming the disc into a cap with its annular edge area in the annular space between the ring 4 and the shoulder 21 of the element 11, the member 5 pushing the ejector 12 inwardly along the element 11 and the rings 33, 34 bearing against the ring 4 and shoulder 21. At the end of the stroke the pad 38 pushes the foil disc against the punch disc 18 to emboss the trade mark, name, product or date &c. thereon and during the return stroke the ring 12 ejects the cap.