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US 11,413,679 B2Granted
Long-life die for the manufacturing of elongate bodies
AssigneeEnkotec A/S
InventorsClaus Peter Matzen, Kenn Christian Prinds
Life of this patent
Estimating the term…
Abstract
A die holder mounts a die to form heads on nails or screws. A top surface of the die includes a groove for longitudinally receiving and holding an elongate body. The die has a recess merging into the groove at one end of the groove to form a nail or screw head. The die is conical for press fit by contact with an inner surface of a bore or hole in the die holder. A top surface of the die is planar to a top surface of the die holder with a bottom surface engaging bottom part of the die holder. The bottom portion of the die has a recess or engaging with a corresponding protrusion die holder fixing an angular orientation of the groove relative to the die holder. Two opposite dies are brought together by two opposite die holders forming the head.
Claims12
A die for mounting in an associated die holder for the production of heads on elongate bodies, the die comprising:
- a body with a top surface provided with a through-going groove to receive and hold an elongate body longitudinally in said groove, a recess at one end of the groove configured to form the heads on the elongate bodies, a side surface comprising a first portion with a curved shaped configured for press fit by contact with a cured portion of an inner surface of a bore or hole in the associated die holder, and a stop surface configured to engage a stop part in the hole or bore of the associated die holder, so as to determine a height of the die in relation to the associated die holder, wherein the side surface further comprises a second portion configured to engage with a corresponding portion of the inner surface of the bore or hole in the associated die holder to guide angular orientation of the groove relative to the associated die holder, wherein the first portion of the side surface has a cylindrical shape or a conical shape, wherein the second portion of the side surface comprises a plane portion configured to engage with a corresponding plane portion of the inner surface of the bore or hole in the associated die holder, and wherein said plane portion forms an angle of 0.5-2.0° with a central axis of the die.
A machine for producing heads on elongated bodies, the machine comprising:
- at least one die comprising
- a body with a top surface provided with a through-going groove to receive and hold an elongate body longitudinally in said groove,
- a recess at one end of the groove configured to form the heads on the elongate bodies,
- a side surface comprising a first portion with a curved shaped configured for press fit by contact with a curved portion of an inner surface of a bore or hole in an associated die holder, and
- a stop surface configured to engage a stop part in the hole or bore of the associated die holder, so as to determine a height of the die in relation to the associated die holder,
- wherein the side surface further comprises a second portion configured to engage with a corresponding portion of the inner surface of the bore or hole in the associated die holder to guide angular orientation of the groove relative to the associated die holder, and
- the associated die holder
- a body having a surface part, and
- a plurality of holes or bores in the surface part, wherein each of the plurality of holes or bores has a first inner side surface portion with a curved shaped and configured for receiving a die of the at least one die and for press fit engagement with the die by contact with a side surface of the die, wherein each of the holes or bores has a second inner side surface portion are configured to engage with a corresponding side surface portion of the die to fix angular orientation of the die relative to the die holder, and
- wherein in each of the holes or bores has a stop part configured to fix a height of a top surface of the die in relation to the surface part of the die holder.
7 more elements
A method of manufacturing a head on an elongate body, comprising:
- providing a die comprising
- a body with a top surface provided with a through-going groove to receive and hold an elongate body longitudinally in said groove,
- a recess at one end of the groove configured to form the heads on the elongate bodies,
- a side surface comprising a first portion with a curved shaped configured for press fit by contact with a curved portion of an inner surface of a bore or hole in the associated die holder, and
- a stop surface configured to engage a stop part in the hole or bore of the associated die holder, so as to determine a height of the die in relation to the associated die holder,
- wherein the side surface further comprises a second portion configured to engage with a corresponding portion of the inner surface of the bore or hole in the associated die holder to guide angular orientation of the groove relative to the associated die holder, and
- a ring-shaped die holder comprising
- a body having a surface part, and
- a plurality of holes or bores in the surface part, wherein each of the plurality of holes or bores has a first inner side surface portion with a curved shaped and configured for receiving a die and for press fit engagement with the die by contact with a side surface of the die, wherein each of the holes or bores has a second inner side surface portion are configured to engage with a corresponding side surface portion of the die to fix angular orientation of the die relative to the die holder, and
- wherein in each of the holes or bores has a stop part configured to fix a height of a top surface of the die in relation to the surface part of the die holder.
7 more elements
Dependencies are inferred from the claim text.