JPS6190870U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of the main parts of a drilling machine that embodies this idea, Figure 2 is a perspective view showing the entire drilling machine, Figure 3 is a partial cross-sectional view of the drilling machine, and Figure 4 is a partial cross-sectional view of the same. FIG. In the figure, 1 is a machine frame, 6 is a head, 7 is a punch, 31 is an eccentric cam, 33 is a motor as a drive source, 41 is a reduction gear mechanism, 42 is a rotating member, 44 is a cam contact piece, and 45 is an operating piece. , 47 is a release piece.

Claims (1)

[Claims for Utility Model Registration] 1. To perforate a card C by moving in a direction perpendicular to the surface of the card C on a machine frame 1 that supports a card C to be perforated in a stepwise movable manner. In a drilling machine equipped with a punch 7 and a drive source 33 such as a motor for moving the punch 7, between the punch 7 and the drive source 33, the drive action of the drive source 33 causes the An eccentric cam 31 is provided which rotates around an axis substantially parallel to the card C surface, and an intermediate portion rotates around an axis substantially parallel to the axis of the eccentric cam 31 between the eccentric cam 31 and the punch 7. A rotatable rotating member 42 is provided, and a pair of cam contact pieces 44 are provided at one end of the rotating member 42 to sandwich the axis of the eccentric cam 31 and the outer peripheral surface of the cam 31. At the other end of the member 42, there is an actuating piece 45 that causes the punch 7 to act on the card C by rotating the rotating member 42 in one direction, and an actuating piece 45 that causes the punch 7 to act on the card C by rotating the rotating member 42 in the other direction. A punch actuating device for a punching machine, characterized in that a release piece 47 is provided to separate the card C from the card C. 2. The operating piece 45 is configured of a bullet plate whose base end is fixed to the rotating member 42, whose free end abuts the punch 7, and has elasticity to withstand the drilling load caused by the punch 7. The punch operation of the drilling machine according to claim 1, wherein the pair of cam contact pieces 44 and the release piece 47 are integrally formed with the rotating member 42. Device. 3. The punch actuating device for a drilling machine according to claim 1 or 2, wherein the eccentric cam 31 and the drive source 33 are connected via a reduction gear mechanism 41.