The invention belongs to the technical field of
machining of lock catches for cold-rolled strip
package and particularly relates to a
machining die for a steel strip open-type lock catch for
package. The
machining die comprises an upper die
assembly, a lower die
assembly, a material pushing device and two upper die lifting guide column devices, wherein the upper die
assembly consists of an upper die plate, a dip mold base, a
punching and shearing die, a
punching pressure plate, two
extrusion block bases, two inclined
extrusion blocks and a reciprocating lifting pressure plate; the lower die assembly comprises a lower die plate, a base plate, a lower molding die base, a left concave die block, a left movable
punching die I, a left movable punching die II, a right concave die block, a right movable punching die I, a right movable punching die II, a feeding cover plate and a locating baffle; the two inclined
extrusion blocks are respectively and slidably connected with the left movable punching die I, the right movable punching die I, the left movable punching die II, and the right movable punching die II. The machining die is capable of finishing
continuous production processes such as feeding, punching, press molding, dimpling and discharging of steel strip latch catches for
package only by use of one punching
machine, greatly lowering the equipment investment volume and improving the productivity.