Apparatus at a carding machine having a cylinder and clothed and/or unclothed elements located opposite the cylinder
AssigneeTruetzschler GmbH & Co. KG
InventorsStefan Schlichter, Axel S. Herrmann
Life of this patent
Estimating the term…
Abstract
A carding machine has a number of rollers including a cylinder and having at least one clothed and/or unclothed machine element located opposite the cylinder at a spacing therefrom. The machine may have further elements influencing the carding nip. In order to make possible a carding nip between the cylinder and the clothed and/or unclothed counterpart element that remains constant or virtually constant when heat is generated, the parts influencing the carding nip are so construed that they have thermal expansion characteristics which are such that, when subjected to the heat acting on them in use, the carding nip remains substantially constant.
Claims29
A carding machine having a carding nip, comprising:
- a carding cylinder having a positive thermal expansion coefficient and a support structure adapted to hold card top clothing at a distance from the carding cylinder to define a carding nip, wherein the support structure has a negative thermal expansion coefficient, and wherein the positive thermal expansion coefficient and the negative thermal expansion coefficient are selected to maintain a substantially constant carding nip when subjected to heat generated by normal operation of the carding machine.
A carding machine having a carding nip, comprising:
- a carding cylinder having a positive thermal expansion coefficient and a cylindrical sheath surrounding the carding cylinder, wherein the cylindrical sheath has a negative thermal expansion coefficient, and wherein the positive thermal expansion coefficient and the negative thermal expansion coefficient are selected to maintain a substantially constant carding nip when subjected to heat generated by normal operation of the carding machine.
A carding machine having a carding nip, comprising:
- a carding cylinder having a positive thermal expansion coefficient and a support structure adapted to couple a shaft of the carding cylinder to a card top bar, wherein the support structure has a positive thermal expansion coefficient, and wherein the positive thermal expansion coefficients of the carding cylinder and the support structure are selected maintain a substantially constant carding nip when subjected to the heat generated by normal operation of the carding machine.
A carding machine having a carding nip, comprising:
- a cylindrical sheath having a negative thermal expansion coefficient and at least one of a flexible bend or an extension bend having a positive thermal expansion coefficient, wherein the negative thermal expansion coefficient and the positive thermal expansion coefficient are selected to maintain a substantially constant carding nip subjected to heat generated by normal operation of the carding machine.
A carding machine having a carding nip, comprising a carding cylinder and a support structure, each having a respective thermal expansion coefficient that is selected to maintain a substantially constant carding nip when raised to operating temperature of the machine from the heat generated by normal operation of the carding machine, by virtue of one or more of
- (a) the carding cylinder having a positive thermal expansion coefficient and the support structure haying a negative thermal expansion coefficient;
- or
- (b) the carding cylinder having a positive thermal expansion coefficient and the support structure having a positive thermal expansion coefficient.
Dependencies are inferred from the claim text.