A mixing device includes: a guide module which has a preset length, to which the mixing container is rotatably seated along a longitudinal direction and to which the mixing container is selectively fixed to be attachable and detachable; a rotating module which is provided on the guide module and selectively rotates the mixing container so that a first rotation axis is formed along the vertical direction of the mixing container; and a tilting module which is formed long along the vertical direction, has a second rotation axis on both sides along a width direction of the guide module, is rotatably coupled, and selectively rotates the guide module in the vertical direction to tilt the mixing container in a direction intersecting the first rotation axis.

A mixing device includes: a guide module which has a preset length, to which the mixing container is rotatably seated along a longitudinal direction and to which the mixing container is selectively fixed to be attachable and detachable; a rotating module which is provided on the guide module and selectively rotates the mixing container so that a first rotation axis is formed along the vertical direction of the mixing container; and a tilting module which is formed long along the vertical direction, has a second rotation axis on both sides along a width direction of the guide module, is rotatably coupled, and selectively rotates the guide module in the vertical direction to tilt the mixing container in a direction intersecting the first rotation axis.

A liquid supply apparatus includes a liquid container including a containing part having flexibility, and a connecting part provided at an end portion of the containing part, a channel connected to the connecting part and configured to flow a liquid out of the liquid container, a rotation unit configured to rotate the containing part with respect to the connecting part, a regulating unit configured to regulate displacement of the connecting part in a direction crossing a connection direction between the connecting part and the channel.

A liquid supply apparatus includes a liquid container including a containing part having flexibility, and a connecting part provided at an end portion of the containing part, a channel connected to the connecting part and configured to flow a liquid out of the liquid container, a rotation unit configured to rotate the containing part with respect to the connecting part, a regulating unit configured to regulate displacement of the connecting part in a direction crossing a connection direction between the connecting part and the channel.