Pinch roll weft feeder with expandable transport roll
AssigneeTextilma AG
InventorFrancisco Speich
Life of this patent
Estimating the term…
Abstract
A transport roller (10) is provided on a ribbon loom and a press roller (12) is forced against said transport roller to grip a bobbin supply thread (26). In order to simplify adjustment of the transport speed while keeping the speed of the transport roller constant, a friction surface (32) is provided on the outside of the transport rollers casing or jacket (78) and can be expanded radially by an adjustment device (66, 72).
Claims17
A thread transport device for a textile machine, including but not limited to a ribbon loom comprising:
- a shaft;
- a drivable transport roller with variable circumferential speeds and a friction surface arranged on said shaft;
- and
- a pretensioned contact pressure roller with inclusion of a thread to be transported, against the transport roller,
- wherein the friction surface is formed by a seamless jacket that is radially expandable by means of a regulator device, the transport roller and the contact pressure roller are followed by a pneumatic compensation device for the thread, and including at least two thread transport devices and a joint drivable shaft carrying said thread transport devices.
A thread transport device for a textile machine, including but not limited to a ribbon loom comprising:
- a shaft;
- a drivable transport roller with variable circumferential speeds and a friction surface arranged on said shaft;
- and
- a pretensioned contact pressure roller with inclusion of a thread to be transported, against the transport roller,
- wherein the regulator device has a regulator block of substantially incompressible elastomer material arranged between the shaft and the jacket, with a support device being interconnected to said jacket, said regulator block being clamped, in an axial direction, between two presser links counteracting each other, at least one of said presser links being adjustable.
A thread transport device for a textile machine, including but not limited to a ribbon loom comprising:
- a shaft;
- a drivable transport roller with variable circumferential speeds and a friction surface arranged on said shaft;
- and
- a pretensioned contact pressure roller with inclusion of a thread to be transported, against the transport roller,
- wherein the regulator device includes a counterconical regulator link on said shaft carrying said transport roller, and the expandable jacket has a conical inner side oriented toward said and interacting with said counterconical regulator link, the jacket and the counterconical regulator link being adjustable relative to each other in an axial direction by means of an adjusting device.
A thread transport device for a textile machine, including but not limited to a ribbon loom comprising:
- a shaft;
- a drivable transport roller with variable circumferential speeds and a friction surface arranged on said shaft;
- and
- a pretensioned contact pressure roller with inclusion of a thread to be transported, against the transport roller,
- wherein the friction surface is formed by a seamless jacket that is radially expandable by means of a regulator device, and wherein the transport roller and the contact pressure roller are followed by a pneumatic compensation device for the thread.
A thread transport device for a textile machine, including but not limited to a ribbon loom comprising:
- a shaft;
- a drivable transport roller with variable circumferential speeds and a friction surface arranged on said shaft;
- and
- a pretensioned contact pressure roller with inclusion of a thread to be transported, against the transport roller,
- wherein the friction surface is formed by a seamless jacket that is radially expandable by means of a regulator device, and including at least two thread transport devices and a joint drivable shaft carrying said thread transport devices.
Dependencies are inferred from the claim text.