An ejecting system for a workpiece from a die cavity in a stamping machine is disclosed. The ejecting system has a spring plunger mechanism to fetch the workpiece from the die cavity of the die platen of the stamping machine. The spring plunger mechanism is provided with a picker which is integrated with a vacuum system to hold the workpiece. Underneath the spring plunger mechanism, there is an actuator, including a positioning sensor, for triggering both synchronous upward and downward movement of the linear actuator to the punch of a die set.

An ejecting system for a workpiece from a die cavity in a stamping machine is disclosed. The ejecting system has a spring plunger mechanism to fetch the workpiece from the die cavity of the die platen of the stamping machine. The spring plunger mechanism is provided with a picker which is integrated with a vacuum system to hold the workpiece. Underneath the spring plunger mechanism, there is an actuator, including a positioning sensor, for triggering both synchronous upward and downward movement of the linear actuator to the punch of a die set.

A hat-shaped cross-section component manufacturing apparatus includes: a die that includes a forming face that presses both side portions of a metal stock sheet; a punch that includes a forming face that presses a central portion of the metal stock sheet; a pad that includes a forming face that presses and grips the central portion of the metal stock sheet against the punch; and a blank holder that includes a forming face that presses and grips the both side portions of the metal stock sheet against the die. The hat-shaped cross-section component manufacturing apparatus further includes a pressure limiting device configured including a floating block that moves together with the blank holder when forming of a curving component has been completed, that is interposed between the pad and the blank holder, and that limits pressing of the formed curving component between the pad and the blank holder during demolding.

A hat-shaped cross-section component manufacturing apparatus includes: a die that includes a forming face that presses both side portions of a metal stock sheet; a punch that includes a forming face that presses a central portion of the metal stock sheet; a pad that includes a forming face that presses and grips the central portion of the metal stock sheet against the punch; and a blank holder that includes a forming face that presses and grips the both side portions of the metal stock sheet against the die. The hat-shaped cross-section component manufacturing apparatus further includes a pressure limiting device configured including a floating block that moves together with the blank holder when forming of a curving component has been completed, that is interposed between the pad and the blank holder, and that limits pressing of the formed curving component between the pad and the blank holder during demolding.

An example of a blanking die includes a blanking apparatus configured to form a series of at least two metallic blanks from sheet metal, and an ejection apparatus configured to eject a first one of the series of the metallic blanks out of the blanking die in a predetermined direction and a second one of the series of the metallic blanks out of the blanking die in said predetermined direction.

An example of a blanking die includes a blanking apparatus configured to form a series of at least two metallic blanks from sheet metal, and an ejection apparatus configured to eject a first one of the series of the metallic blanks out of the blanking die in a predetermined direction and a second one of the series of the metallic blanks out of the blanking die in said predetermined direction.

In a cutting die having a cutting chip, applied to a punch press, and cutting a work in collaboration with a cutting punch, a resistance member for guiding swarf generated during cutting of the work through the cutting chip and dividing it by giving resistance to it is provided around a scrap discharge hole so that the divided swarf does not remain in the scrap discharge hole but is discharged to an outside so as to prevent clogging by scrap.

In a cutting die having a cutting chip, applied to a punch press, and cutting a work in collaboration with a cutting punch, a resistance member for guiding swarf generated during cutting of the work through the cutting chip and dividing it by giving resistance to it is provided around a scrap discharge hole so that the divided swarf does not remain in the scrap discharge hole but is discharged to an outside so as to prevent clogging by scrap.

There is provided a method of manufacturing a tooth-shaped component including drawing process of draw-forming a workpiece so as to obtain a cylindrical container which has a bottom surface portion and a side surface portion; diameter-reducing process of reducing a diameter of a particular part in which a tooth tip portion is to be formed in the side surface portion of the cylindrical container, so as to increase a thickness of a corner portion such that an external shape of the corner portion between the bottom surface portion and the side surface portion satisfies the following conditional expression (1); and tooth shape-forming process of forming the tooth tip portion in the particular part of the cylindrical container reduced in diameter in the diameter-reducing process, so as to obtain a tooth-shaped component which has the bottom surface portion, the side surface portion, and the tooth tip portion.

(R+H)2t(1)

The present invention relates to an apparatus for manufacturing a rechargeable battery case, the apparatus comprising: a punch which presses an object; a die which comprises an extrusion part for extruding the pressed object, wherein, when the punch presses the object such that the object enters the extrusion part, the die is elastically deformed so that the width of the extrusion part is increased, and when the punch continues to press the object such that the object is separated from the extrusion part, the die is elastically deformed so that the width of the extrusion part is restored to an initial value; and a knockout unit which is raised through the extrusion part of the die, has the object seated thereon, raises or lowers the object, and raises the object when the object interferes with the die such that the punch and the object are separated from each other.