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US 12,377,595 B2Granted
Extrusion and/or pultrusion device and method
AssigneeReliefed AB
InventorMark Jansson Kragh
Life of this patent
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Abstract
An extrusion- or pultrusion device for forming a profile product in a production direction comprising a rotating die having two opposite first and second side walls and an outer circumferential surface there between, wherein the rotating die comprises a first side portion in connection to the first side wall and a second side portion in connection to the second side wall and a mid-portion extending between the first and second side portions, wherein the first and/or second side portions comprises an recess extending in a radial direction with an extension being less than a radial extension of at least a part of the mid-portion.
Claims32
An extrusion- and/or pultrusion device for forming a profile product in a production direction, said device comprising:
- a rotating die, extending in a radial direction and a width direction, having two opposite first and second side walls and an outer circumferential surface extending in the width direction there between, wherein the rotating die comprises a first side portion in connection to the first side wall and a second side portion in connection to the second side wall and a mid-portion extending between the first and second side portions,
- and
- a profile definition zone having a longitudinal direction coinciding with the production direction, a height direction and the width direction being perpendicular to the height direction, comprising a through channel comprising a first channel section followed by a second channel section downstream the first channel section with reference to the production direction, wherein the rotating die is rotatable about an axis extending across the production direction and arranged to allow the outer circumferential surface to, while the rotating die rotates, exert a pressure onto a surface of a material when fed through the profile definition zone,
- wherein;
- the first channel section is circumferentially delimited by one or more walls and
- the second channel section is circumferentially delimited by
- the circumferential surface of the rotating die and
- a channel portion comprising
- a counter-bearing opposite the rotating die and
- opposing first and second channel portion side walls between the rotating die and the counter-bearing;
- and
- wherein
- the first and/or second side portions comprises one or more recesses extending at least in the width direction and the radial direction, the one or more recesses having a radial extension being smaller than a radial extension of at least a part of the mid-portion such that material flowing in a direction towards the first side wall and the second side wall will lose momentum and speed due to the decrease in pressure in the recesses in the first and second side portions, and the one or more recesses being arranged on an edge portion of the rotating die.
10 more elements
An extrusion- and/or pultrusion device for forming a profile product in a production direction, said device comprising:
- a rotating die, extending in a radial direction and a width direction, having two opposite first and second side walls and an outer circumferential surface extending in the width direction there between, wherein the rotating die comprises a first side portion in connection to the first side wall and a second side portion in connection to the second side wall and a mid-portion extending between the first and second side portions,
- and
- a profile definition zone having a longitudinal direction coinciding with the production direction, a height direction and the width direction being perpendicular to the height direction, comprising a through channel comprising a first channel section followed by a second channel section downstream the first channel section with reference to the production direction, wherein the rotating die is rotatable about an axis extending across the production direction and arranged to allow the outer circumferential surface to, while the rotating die rotates, exert a pressure onto a surface of a material when fed through the profile definition zone,
- wherein;
- the first channel section is circumferentially delimited by one or more walls and
- the second channel section is circumferentially delimited by
- the circumferential surface of the rotating die and
- a channel portion comprising
- a counter-bearing opposite the rotating die and
- opposing first and second channel portion side walls between the rotating die and the counter-bearing;
- and
- wherein
- the first and/or second side portions comprises one or more recesses extending at least in the width direction and the radial direction, the one or more recesses having a radial extension being smaller than a radial extension of at least a part of the mid-portion such that material flowing in a direction towards the first side wall and the second side wall will lose momentum and speed due to the decrease in pressure in the recesses in the first and second side portions, and the one or more recesses being arranged on an edge portion of the first and/or second side portion of the rotating die;
- and
- wherein the first side portion comprises a first extended flange portion extending in the radial direction with an extension exceeding the radial extension of at least a part of the mid-portion and a first recessed flange portion that does not exceed the radial extension of the mid-portion and wherein the second side portion comprises a second extended flange portion extending in the radial direction with an extension exceeding the radial extension of at least a part of the mid-portion and a second recessed flange portion that does not exceed the radial extension of the mid-portion.
12 more elements
Dependencies are inferred from the claim text.