US 12,611,857 B2Granted

Stencil printing machine and alignment method

AssigneeIllinois Tool Works Inc.

InventorZaizai Cheng

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Abstract

The present disclosure provides a stencil printer for printing a viscous substance onto a substrate. The stencil printer comprises a frame, a stencil, a support table, a squeegee blade mount, a squeegee blade and a squeegee blade holder. The stencil is connected to the frame. The support table is connected to the frame and configured to support the substrate in a printing position. The support table is provided below the stencil. The squeegee blade mount is connected to the frame and provided above the stencil. The squeegee blade extends in an X direction and performing a squeegeeing operation in a Y direction perpendicular to the X direction. The squeegee blade holder comprises a fixed holder and a movable holder. The fixed holder is fixedly mounted to the squeegee blade mount, and the squeegee blade is held on the movable holder. The movable holder is configured to be movably connected to the fixed holder in the X direction to enable the squeegee blade to move relative to the support table in the X direction, so that the squeegee blade is adjustable in the X direction to a position aligned with the support table and the stencil.

A stencil printer for printing a viscous substance onto a substrate, the stencil printer comprising:

a frame;
a stencil connected to the frame;
a support table connected to the frame, the support table being configured to support the substrate in a printing position, and the support table being provided below the stencil;
a squeegee blade mount connected to the frame, the squeegee blade mount being provided above the stencil;
a squeegee blade extending in an X direction and performing a squeegeeing operation in a Y direction perpendicular to the X direction;
a squeegee blade holder comprising a fixed holder and a movable holder, the fixed holder being fixedly mounted to the squeegee blade mount, and the squeegee blade being held on the movable holder, wherein the movable holder is configured to be movably connected to the fixed holder in the X direction to enable the squeegee blade to move relative to the support table in the X direction, so that the squeegee blade is adjustable in the X direction to a position aligned with the support table and the stencil;
and
an adjusting means mounted to the fixed holder and configured to drive the movable holder to move relative to the fixed holder in a first movement direction and in a second movement direction opposite to the first movement direction, wherein the first movement direction and the second movement direction are in the X direction, the adjustment means including
a driving member comprising a handle and a push rod connected to the handle, the push rod abutting against the movable holder, and the driving member being configured to drive the push rod to move in the first movement direction relative to the fixed holder by operation of the handle, so as to push the movable holder to move in the first movement direction relative to the fixed holder;
and
a restoring member being clamped between the movable holder and the fixed holder, the restoring member being configured to accumulate a restoring force during the movement of the movable holder in the first movement direction, and to drive the movable holder to move in the second movement direction by means of the restoring force.

8 more elements

Abstract

Claims11