Gripper bar body for a gripper carriage arrangement
AssigneeBobst Mex SA
InventorsStephane Chesaux, Jean-Claude Rebeaud
Life of this patent
Estimating the term…
Abstract
The invention relates to a gripper bar body for a gripper bar in a gripper carriage arrangement in a machine for treating sheet material, the gripper bar body being configured to carry gripper brackets for movement between sheet gripping and sheet releasing positions. The gripper bar body is formed as a hollow structure comprising at least two different materials, the two different materials comprising at least a metal material and a composite material and the at least two different materials being at least partly arranged in a superposed manner. The resulting bar has a better resistance to wear than the ones of the state-of-the-art.
Claims20
A gripper bar body for a gripper bar for gripping sheet material, the gripper bar body being configured to carry gripper brackets for movement between sheet gripping and sheet releasing positions, the gripper bar body comprising:
- a substantially hollow structure comprising at least two different materials, the substantially hollow structure having a top wall, a bottom wall, a first side wall connecting the top wall and the bottom wall, and a second side wall connecting the top wall and the bottom wall, wherein the top wall, the bottom wall, the first side wall, and the second side wall define a cavity, and wherein at least one of the top wall or the bottom wall includes a first surface and a stepped portion that extends vertically to a second surface which is recessed with respect to the first surface and extends horizontally to connect to the first side wall or the second side wall,
- wherein the at least two different materials include at least a metal material and a composite material,
- the at least two different materials are at least partly arranged in a superposed manner, and
- an abrasion resistance of the composite material is larger than an abrasion resistance of the metal material.
A gripper bar body for a gripper bar for gripping sheet material, the gripper bar body being configured to carry gripper brackets for movement between sheet gripping and sheet releasing positions, the gripper bar body comprising:
- a substantially hollow structure comprising a metal material, the substantially hollow structure having a top wall, a bottom wall, a first side wall connecting the top wall and the bottom wall, and a second side wall connecting the top wall and the bottom wall, wherein the top wall, the bottom wall, the first side wall, and the second side wall define a cavity, and at least one of the top wall or the bottom wall include a first surface and a stepped portion that extends vertically to a second surface which is recessed with respect to the first surface and extends horizontally to connect to the first side wall or the second side wall, and
- a composite material superposed on the metal material and having an abrasion resistance larger than an abrasion resistance of the metal material, wherein the composite material is omitted from at least one area of the substantially hollow structure such that the metal material is exposed.
A gripper bar body for a gripper bar for gripping sheet material, the gripper bar body being configured to carry gripper brackets for movement between sheet gripping and sheet releasing positions, the gripper bar body comprising:
- a substantially hollow structure comprising a metal material, the substantially hollow structure having a top wall, a bottom wall, a first side wall connecting the top wall and the bottom wall, and a second side wall connecting the top wall and the bottom wall, wherein the top wall, the bottom wall, the first side wall, and the second side wall define a cavity, and wherein at least one of the top wall or the bottom wall includes a first surface and a stepped portion that extends vertically to a second surface which is recessed respect to the first surface and extends horizontally to connect to the first side wall or the second side wall, and
- only one coating of composite material superposed on the metal material,
- wherein an abrasion resistance of the composite material is larger than an abrasion resistance of the metal material.
Dependencies are inferred from the claim text.