Automatic lead supply apparatus for plotter
AssigneeMutoh Industries Ltd.
InventorHiroshi Oguchi
Life of this patent
Estimating the term…
Abstract
When a pen holder of a drawing head of an automatic lead supply apparatus is raised and lowered, and a knocking pipe of a pencil holder held by the pen holder strikes or is pressed against a knocking plate in order to repeatedly raise and lower the knocking pipe, a lead contained in the pencil holder is fed to a front end of the pencil holder. Before the lead feeding operation, a controller functions to finely oscillate the drawing head in order to prevent the lead from clogging the knocking pipe. As a result, a single lead will be properly and reliably guided to a lead chucking mechanism.
Claims8
An automatic lead supply apparatus for a plotter having a linear Y-rail and a Y-motor for moving a drawing head along the linear Y-rail, said apparatus comprising:
- a pen holder adapted to be mounted to the drawing head so as to be movable therewith along the Y-rail;
- a multi-lead knocking type pencil holder engaged with said pen holder for movement therewith along the Y-rail, said pencil holder including a chuck member, a knocking pipe, a lead housing part, and a lead guiding member for guiding lead from said lead housing part to said chuck member;
- and
- oscillation means for operating the Y-motor to move the drawing head back and forth along the Y-rail to cause oscillation of said pencil holder along a longitudinal direction of the Y-rail during a lead feeding operation.
An automatic lead supply apparatus for a plotter, said apparatus comprising:
- a linear Y-rail;
- a drawing head mounted to said Y-rail for movement therealong;
- a Y-motor operably coupled with said drawing head to move said drawing head along said Y-rail;
- a pen holder mounted to said drawing head for movement therewith along said Y-rail;
- a multi-lead knocking type pencil holder engaged with said pen holder for movement therewith along said Y-rail, said pencil holder including a chuck member, a knocking pipe, a lead housing part, and a lead guiding member for guiding lead from said lead housing part to said chuck member;
- and
- oscillation means for operating said Y-motor to move said drawing head back and forth along said Y-rail to cause oscillation of said pencil holder along a longitudinal direction of said Y-rail during a lead feeding operation.
Dependencies are inferred from the claim text.