Patent US1431987A successfully refreshed from Google Patents.
EP0533633A2
Expired / Lapsed
EP
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Machine and method for making weakening cuts, particularly on container caps
Assignee: CMB ITALCAPS TECHNOLOGY Srl
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Filing: 1992-09-15
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Granted: —
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Expires: 2012-09-15
Abstract
Abstract There is described a machine for making weakening cuts, particularly on caps (28) provided with a side skirt (60) and a top disc (62), said side skirt (60) ending at the bottom in a ring (66) which has a reduced thickness, is provided with a fastening flap (58) and is intended to form a tamper-proof band after the weakening cuts have been made, said machine being characterised in that it comprises in combination: a support surface (40) intended for the ring (66) and provided with cutting teeth (42) generally at right angles to said surface, which are aligned and separated from one another by gaps (44); and a device which holds said ring (66) of said cap (28) in forced contact with said support surface and at the same time brings about a reciprocal rolling movement, without slipping, of the cap (28), relative to the surface (40), in the direction of alignment of said cutting teeth (42), the arrangement being such that the breakable bridges which remain in place on said ring (66), in positions corresponding to the gaps (44), are located along a circumference lying in a plane at right angles to the axis of the cap (28).
Inventors
- 👤 Franco Iacoboni
- 👤 Oliviero Zanardo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 13:55
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/0015; B26F1/0053; B26F1/18; B26F2210/00; B26F2210/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
197 words
Machine for making weakening cuts, particularly on caps (28) provided with a side skirt (60) and a top disc (62), said side skirt (60) ending at the bottom in a ring (66) which has a reduced thickness, is provided with a fastening flap (58) and is intended to form a tamper-proof band after the weakening cuts have been made, said machine being characterised by the fact that it comprises in combination: a support surface (40) intended for the ring (66) and provided with cutting teeth (42) generally at right angles to said surface, which are aligned and separated from one another by gaps (44), and a device which holds said ring (66) of said cap (28) in forced contact with said support surface and at the same time brings about a reciprocal rolling movement, without slipping, of the cap (28), relative to the surface (40), in the direction of alignment of said cutting teeth (42), the arrangement being such that the breakable bridges which remain in place on said ring (66), in positions corresponding to the gaps (44), are located along a circumference lying in a plane at right angles to the axis of the cap (28).
Claim 2
Dependent Claim
44 words
Machine according to Claim 1, characterised by the fact that said support surface (40) is provided with parts forming on said surface corrugations adapted to convert the forced contact between the cap (28) and the support surface (40) into engagement by an interference fit.
Claim 3
Dependent Claim
17 words
Machine according to Claim 2, characterised by the fact that said corrugating parts consist of rack-like channelling.
Claim 4
Dependent Claim
47 words
Machine according to any of the preceding claims, characterised by the fact that said support surface (40) is a surface forming part of a cylinder and said cutting teeth are positioned along a circumference belonging to a plane at right angles to the axis of the cylinder.
Claim 5
Dependent Claim
60 words
Machine according to any of the preceding claims, characterised by the fact that said device holding said ring (66) of said cap (28) in forced contact with said support surface (40) is provided with parts forming corrugations on its outer surface and adapted to convert the forced contact between it and the cap (28) into engagement by an interference fit.
Claim 6
Dependent Claim
17 words
Machine according to Claim 5, characterised by the fact that said corrugating parts consist of rack-like channelling.
Claim 7
Dependent Claim
38 words
Machine according to any of the precceding claims, characterised by the fact that said device holding said ring (66) of said cap (28) in forced contact with said support surface (40) consists of a rotatable cylindrical body (48).
Claim 8
Dependent Claim
50 words
Machine according to Claim 4, characterised by the fact that said device holding said ring (66) of said cap (28) in forced contact with said support surface (40) consists of a cylindrical body (48) rotating about said support surface (40) and at the same time rotating about its own axis.
Claim 9
Dependent Claim
44 words
Machine according to Claim 8, characterised by the fact that said support surface (40) is fastened to a main plate (10) and said cylindrical body (48) is mounted for rotation on a planet wheel carrier disc (14) rotating coaxially with said main plate (10).
Claim 10
Dependent Claim
47 words
Machine according to Claim 9, characterised by the fact that main gear teeth (18) are provided coaxially with said support surface and attached to said main plate (10), and said cylindrical body (48) is attached to secondary gear teeth (20) meshing with said main gear teeth (18).
Claim 11
Dependent Claim
36 words
Machine according to Claim 10, characterised by the fact that the radius of the generatrix of said main gear teeth (18) is equal to the radius of the cylinder to which the support surface (40) corresponds.
Claim 12
Dependent Claim
26 words
Machine according to any of Claims 7 to 11, characterised in that numerous cylindrical bodies (48) are provided, which in succession engage said support surface (40).
Claim 13
Dependent Claim
224 words
Method of making weakening cuts, particularly on caps (28) provided with a side skirt (60) and a top disc (62) and in which the side skirt (60) ends at the bottom in a ring (66) of reduced thickness provided with a fastening flap (58) and intended to form a tamper-proof band after the weakening cuts have been made, said method being characterised by the fact that it comprises the operations of: providing for the ring (66) a support surface (40) equipped with cutting teeth (42) generally at right angles to said surface, which are aligned and separated by gaps (44); and causing the side skirt (60) of a cap (28) to roll, in a reciprocal relative movement without slipping, in forced contact with the support surface (40), in such a manner that the cutting teeth (42) penetrate into said side skirt along a circumference lying in a plane at right angles to the axis of the cap, the arrangement being such that, at the end of one complete rotation about the side skirt of the cap, in positions corresponding to the gaps (44) between the cutting teeth (42), numerous bridges remain in place on the side skirt (60) of the cap (28), their number being equal to the number of the gaps (44), said bridges separably connecting the side skirt to the tamper-proof band.
References Cited (Backward Citations)
No citation records indexed.
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