Patent ID: 9492940
Filing Date: 2016-11-15
CPC Classification: B21D,B21F,B26D,B26F,Y10T

Claim Text:
1. A stationery punching device for punching a sheet material to form a decorative craft, comprising: a die support frame having first and second ends that are opposite to each other in a first direction, and two opposite sides that are opposite to each other in a second direction which is transverse to the first direction; a die mounted in said die support frame and formed with a die hole; a punch guiding frame disposed above and aligned with said die support frame along a vertical direction that is transverse to the first and second directions, said punch guiding frame having first and second ends and first and second sides, said first and second ends of said punch guiding frame being opposite to each other in the first direction and being respectively disposed adjacent to said first and second ends of said die support frame, said first and second sides of said punch guiding frame being opposite to each other in the second direction, being respectively disposed adjacent to said two opposite sides of said die support frame, and extending between said first and second ends of said punch guiding frame, said punch guiding frame cooperating with said die support frame to define a sheet-receiving slot therebetween for receiving the sheet material, said first ends of said die support frame and said punch guiding frame being securely connected to each other; a punch disposed movably on said punch guiding frame so as to be movable in the vertical direction relative to said die support frame and said punch guiding frame into said die hole; a pivot seat having a seat-pivot end that is disposed adjacent to said second end of said punch guiding frame, a connecting end that is opposite to said seat-pivot end in the first direction and that is disposed at and that is securely connected to at least one of said first ends of said die support frame and said punch guiding frame, and two side arms that are opposite to each other in the second direction and that are disposed adjacent to said first and second sides of said punch guiding frame, respectively; an operating lever having a lever-pivot end that is pivoted to said seat-pivot end of said pivot seat, and an operating end that is opposite to said lever-pivot end, said operating lever abutting against said punch and being rotatable relative to said die support frame for driving movement of said punch in the vertical direction; an urging unit for urging said punch; and first and second slits configured to respectively form a space between the side arms of said pivot seat and the sides of said punch guiding frame, said pivot seat being spaced apart from said second end of said punch guiding frame; wherein, when an upward pulling force acts on said seat-pivot end of said pivot seat, the upward pulling force cannot be transmitted from said side arms of said pivot seat to said first and second sides of said punch guiding frame due to the first and second slits and from said seat-pivot end of said pivot seat to said second end of said punch guiding frame due to said pivot seat being spaced apart from said second end of said punch guiding frame.