rock frame

anglais vers français Technique / Génie Textiles / vêtements / mode in a patent for vehicle upholstery

This invention relates to an interior structure for a vehicle interior. More particularly, the invention relates to an apparatus and method for stitching vehicle interior components.

wherein the post assembly is operatively coupled to a motor configured to drive the needle bar assembly in a reciprocating fashion, the post assembly being operatively coupled to the head via a cylinder arm assembly and a downshaft assembly; and wherein the cylinder arm assembly is rotated in a synchronized manner with a rock frame through mechanical linkage connecting a rock frame drive shaft to the cylinder arm assembly.
Attached to a rock frame drive shaft 101 of the head 10 is a cylinder arm drive link 102 which in turn is pivotally connected to a cylinder arm driven link 103. The cylinder arm driven link 103 is pivotally connected to a cylinder arm rotational drive clamp 104, which is connected to the cylinder drive assembly 16. This configuration enables the cylinder arm assembly 16 to rotate about the lower shaft 42 in sequence with the rotation of a rock frame 105 about the rock frame drive shaft 101. Because the rotation of the rock frame 105 about the rock frame drive shaft 101 controls the position of the needle in the direction of sewing, connecting the rotational motion of the cylinder arm assembly 16 to the rock frame drive shaft 101 will ensure the interface of the needle 72 to the looper 12 will always be correct when upper needle bar transport is utilized.

[Fig. 16ABC] illustrate the orientation of a rock frame relative to a cylinder arm at three points during the stitch cycle;