Up-down worktable

An up-down worktable comprising:

• a base frame;
• a lifting member installed on the base frame to be vertically slidable;
• a work support having one side surface provided with a mounting surface to allow an object to be transferred to be mounted thereon and having an end pivotably installed on the lifting member;
• a lift support portion installed on the base frame to move the lifting member upward while elastically supporting the lifting member to allow the lifting member to move downward according to a load of the object mounted on the mounting surface;
• and
• an angle restriction portion configured to restrict a pivoting angle of the work support so that the mounting surface is set in a direction of intersecting with a sliding direction of the lifting member to mount the object on the mounting surface or so that the work support stands straight with respect to the base frame,
• wherein the work support comprises:
• a bracket installed on the lifting member;
• a pivoting shaft formed on one end of the bracket;
• a pivoting frame extending in a direction away from the bracket and comprising a pivoting hole into which the pivoting shaft is inserted so that an end thereof is pivotably coupled to the bracket;
• and
• a support plate installed on the pivoting frame and provided with the mounting surface on one side surface thereof,
• wherein the pivoting frame comprises a first interference surface formed to extend along an extension direction of the pivoting frame and a second interference surface extending in a direction of intersecting with the first interference surface while a corner part between the first interference surface and the second interference surface is formed to be curved,
• wherein the pivoting hole is extended along the extension direction of the pivoting frame, and
• wherein the angle restriction portion comprises one or more interference blocks formed on respective brackets at positions separated from the pivoting shaft toward ends of the brackets so as to interfere with the first interference surface or the second interference surface of the pivoting frame and restrict pivoting of the pivoting frame.