Stage-stacking lift

Patent metadata

Field	Value
Publication number	US-12344487-B2
Application number	US-202218570298-A
Country	US
Kind code	B2
Filing date	Oct 13, 2022
Priority date	Oct 13, 2021
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

A stage-stacking lift according to the present invention includes a lift unit and a stage-stacking unit mounted in the lift unit. The stage-stacking unit stacks a tray, in which accommodation targets are accommodated, in multiple stages, and the lift unit elevates the tray stacked in multiple stages.

First claim

The invention claimed is:

1. A stage-stacking lift comprising:
a lift unit; and
a stage-stacking unit mounted in the lift unit,
wherein the stage-stacking unit is configured to stack multiple trays therein, each tray configured to receive a respective accommodation target therein,
wherein the lift unit is configured to elevate the multiple trays together,
wherein the stage-stacking unit comprises a Z-axis movable part configured to move the multiple trays in a Z-axis direction that is a vertical direction and a position fixing part configured to fix a position of one of the trays in the vertical direction,
wherein the Z-axis movable part comprises a support stage configured to support a lower portion of the one of the trays and a vertically movable means configured to move the support stage in the vertical direction, and
wherein when the one of the trays is disposed at an upper portion of the support stage within the Z-axis movable part, the support stage is configured to move the one of the trays upward while moving upward.

2. The stage-stacking lift of claim 1 , wherein the stage-stacking unit further comprises a height detection sensor configured to detect a height of the support stage in the vertical direction.

3. The stage-stacking lift of claim 1 , wherein the position fixing part comprises:
a fitting bar having an end configured to fit into a groove defined in a side surface of the one of the trays; and
an actuator configured to move the fitting bar forward and backward with respect to a Y-axis perpendicular to the vertical direction,
wherein when the tray moves upward in the vertical direction to a predetermined height, the actuator is configured to move the fitting bar to fit into the groove defined in the side surface of the one of the trays so as to support the one of the trays and fix a position thereof in the vertical direction.

4. The stage-stacking lift of claim 3 , further comprising a tray detection sensor configured to detect the one of the trays when the one of the trays is disposed at the upper portion of the support stage.

5. The stage-stacking lift of claim 4 , further comprising a horizontally movable unit configured to move the one of the trays in an X-axis direction that is a horizontal direction perpendicular to the vertical direction and perpendicular to the Y-axis, wherein the horizontally movable unit is configured to move the one of the trays to the upper portion of the support stage.

6. The stage-stacking lift of claim 5 , further comprising a controller configured to control a respective operation of each of the lift unit, the stage-stacking unit, and the horizontally movable unit.

7. The stage-stacking lift of claim 6 , wherein when the tray detection sensor is configured to detect that a first tray of the multiple trays is disposed at the upper portion of the support stage, the controller is configured to control the vertically movable means of the Z-axis movable part to upward to the predetermined height in the vertical direction,
the controller is configured to control the position fixing part to fix a position of the first tray at the predetermined height, and
the controller is configured to control the horizontally movable unit to move a second tray of the multiple trays to the upper portion of the support stage, and then to move the Z-axis movable part so that the second tray supports a lower portion of the first tray, to stack the first tray with the second tray.

8. The stage-stacking lift of claim 7 , wherein the lift unit comprises:
a mounting stage in which the stage-stacking unit is mounted; and
a lift means configured to move the mounting stage in the vertical direction,
wherein the mounting stage is configured such that when the mounting stage moves upward through the lift means, the one of the trays stacked in the stage-stacking unit moves upward.

9. The stage-stacking lift of claim 8 , wherein the stage-stacking unit is bolt-coupled to the mounting stage by a bolt.

10. The stage-stacking lift of claim 9 , wherein the lift unit further comprises a lift frame, the lift frame comprises multiple vertical frames and horizontal frames, and the mounting stage is configured to slidably move along the vertical frames using the lift means.

Assignees

• Lg Energy Solution Ltd

Inventors

• Um Jae Hyung
• Park Bong Cheol

Classifications

• B66F7/02 Primary

  with platforms suspended from ropes, cables, or chains {or screws and movable along pillars} · CPC title

• B65G57/301

  by means of reciprocatory or oscillatory lifting and holding or gripping devices · CPC title

• B65G2201/0258

  Trays, totes or bins · CPC title

• B66F2700/09

  Other lifting devices · CPC title

• B65G57/303 Primary

  the stack being lowered by mobile grippers or holders onto added articles · CPC title