Ply-rolling pack for pack ply-rolling of titanium alloy sheet

The invention discloses a ply-rolling pack for pack ply-rolling of a titanium alloy sheet, and relates to the ply-rolling pack which is used in the production process of rolling the titanium alloy sheet by a ply-rolling method. The ply-rolling pack is characterized by comprising a ply-rolling pack core block and a ply-rolling pack cover, wherein the ply-rolling pack core block is a square core block which is formed by directly laminating titanium alloy sheets; the ply-rolling pack cover comprises surface covering steel sheets and lateral sealing steel sheets; the surface covering steel sheets are attached to the outside the uppermost layer of titanium alloy sheet and the lowermost layer of titanium alloy sheet of the ply-rolling pack core block; the lateral sealing steel sheets are attached to the side faces of the ply-rolling pack core block; the steel sheets are mutually welded to form a square pack cover; and a pair of opposite lateral sealing steel sheets are provided with through holes. Through the ply-r