In an example implementation, a corner punching device includes a base to receive media sheets, and a female die piece removably inserted into the base and having an inner perimeter that forms multiple cutting profiles. A male die piece comprises an outer perimeter forming the multiple cutting profiles, and a pushbutton is coupled to the male die piece and moveable toward the base from a first position to a second position to push the male die piece into the female die piece and punch corners of the media sheets in shapes that correspond with the multiple cutting profiles.

In an example implementation, a corner punching device includes a base to receive media sheets, and a female die piece removably inserted into the base and having an inner perimeter that forms multiple cutting profiles. A male die piece comprises an outer perimeter forming the multiple cutting profiles, and a pushbutton is coupled to the male die piece and moveable toward the base from a first position to a second position to push the male die piece into the female die piece and punch corners of the media sheets in shapes that correspond with the multiple cutting profiles.

The book binding device includes a section for forming a cut in the end side of a conveyed sheet, a control section for controlling the section for forming a cut, and a selection section for selecting each sheet for the presence/absence of a cut to be formed by the section for forming a cut, wherein the control section controls the formation of a cut by the section for forming a cut based on the presence/absence of the formation of a cut selected by the selection section, and then the mixture of sheets in which cuts are formed and sheets in which cuts are not formed are bundled and bound to complete a booklet.

The book binding device includes a section for forming a cut in the end side of a conveyed sheet, a control section for controlling the section for forming a cut, and a selection section for selecting each sheet for the presence/absence of a cut to be formed by the section for forming a cut, wherein the control section controls the formation of a cut by the section for forming a cut based on the presence/absence of the formation of a cut selected by the selection section, and then the mixture of sheets in which cuts are formed and sheets in which cuts are not formed are bundled and bound to complete a booklet.

An electrode substrate notching device comprises: a first base comprising a first holder; a back plate in the first holder and assembled with a fastener passing through a through-hole of the first base; a second holder in the first holder and assembled on the back plate; a punch in the second holder and assembled on the back plate; a second base; and a die on the second base positioned towards the punch. The through-hole of the first base provides space for the fastener for moving the fastener by a distance in the through-hole, where the distance is greater than an adjustment range of the punch.

An electrode substrate notching device comprises: a first base comprising a first holder; a back plate in the first holder and assembled with a fastener passing through a through-hole of the first base; a second holder in the first holder and assembled on the back plate; a punch in the second holder and assembled on the back plate; a second base; and a die on the second base positioned towards the punch. The through-hole of the first base provides space for the fastener for moving the fastener by a distance in the through-hole, where the distance is greater than an adjustment range of the punch.

The present invention relates to a manufacturing method for a mower cord and includes pressing a resin wire rod and plastically deforming at least part of the wire rod in an axis perpendicular direction. Work-hardening of a surface of the plastically deformed portion allows dramatic enhancement of mowing efficiency.

The present invention relates to a manufacturing method for a mower cord and includes pressing a resin wire rod and plastically deforming at least part of the wire rod in an axis perpendicular direction. Work-hardening of a surface of the plastically deformed portion allows dramatic enhancement of mowing efficiency.

A rechargeable battery electrode substrate notching device includes a die and a punch notching an electrode substrate into an electrode having a straight part and a round part by being lifted toward the die while the electrode substrate is installed on the die, wherein the punch includes a round shear part corresponding to the round part.

A rechargeable battery electrode substrate notching device includes a die and a punch notching an electrode substrate into an electrode having a straight part and a round part by being lifted toward the die while the electrode substrate is installed on the die, wherein the punch includes a round shear part corresponding to the round part.