JPS6248497A - Document punching machine - Google Patents

Abstract

1. Letter punch including two components (1, 2) hingedly connected in the area of their longitudinal edges for the purpose of simultaneous punching of letters in two locations by way of two circular cylindrical cutters (12, 22) and co-acting templates (11, 21) whereby the two punch components (1, 2) are of identical shape, and each component comprises both a cut-out serving as template (11 or 21 respectively) and a circular cylindrical cutter (12 or 22 respectively) co-acting with the template (21 or 11 respectively) of the other component, characterised in that each punch component (1, 2) comprises two mounting flanges (13, 14; 23, 24) of which one has a mounting pin, and the other has a mounting eye to accommodate the mounting pin of the other punch component ; that each punch component (1, 2) is formed in one piece ; that a means for fixing the position (8, 19; 28, 29) relative to each other is formed onto the punch components (1, 2).

Description

Detailed Description of the Invention Technical Field The present invention has two parts pivotally connected to each other for simultaneously punching two holes in a document using a single cylindrical blade. The invention relates to document punchers each having a punching die cooperating with a punching die.

This kind of document hole puncher is for example German Patent Publication No. 264.
It is known from the 6778 publication and usually consists of several parts which are molded into different shapes. Each of these multiple parts requires a punching tool and the appropriate equipment must be used for assembly, making assembly cumbersome and time consuming.

1. It is an object of the present invention that the two parts forming the document punch can be manufactured with only one tool, and that no additional equipment is required for assembly, simply supporting the respective parts. To provide a particularly small document hole puncher that only requires interlocking parts.

C. In order to achieve the above object, the present invention provides a method in which both the parts have the same shape and each part acts as a 5-punching die.
It is characterized by having two holes and a cylindrical blade that cooperates with the hole in the mating part.

According to the present invention, the two parts forming the document punch can be manufactured with only one tool, and no additional equipment is required for assembly, simply the support of said parts. It is only necessary to engage the parts, and the document hole puncher can be configured compactly.

Arrow] 1 juice Next, one embodiment of the present invention will be described with reference to the accompanying drawings.

The document punch according to the invention consists of two parts 1 and 2 with a double Z-shaped cross section. The two strip-shaped edges 15 and 16 or 25 and 26 are therefore 1
The central portion 17 or 27 lies in a plane parallel to said plane. The central part 17, 27 is provided with a hole 11 or 21, respectively, which serves as a punching die.

It has a circular blade 12 or 22 made by a drawing method. At the ends of both strip-shaped edges 16 or 26, supporting protrusions 13.14 or 23.24 are bent vertically, and the supporting protrusions 13, 23 have support pins formed in a cylindrical shape. The other supporting protrusion 14 or 24 has a supporting hole. The front edges of these supporting projections 13° 14. 23. 24 form stops for the document to be pierced, i.e. the supporting axis is aligned with the central part 17.
Alternatively, it extends within the plane of 27. To assemble the punch, it is only necessary to fit the two parts 1, 2 together and push the support pin into the support hole. Both parts 1 and 2
In order to fix the positions of the supporting protrusions 1 to each other,
3, 14, 23° 24 striped edges 16 and 2
The protruding plates 18, 19 or 28, 29 provided at 6 may be folded 1111 and engaged with each other.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a document hole puncher according to the present invention before being assembled, and FIG. 2 is a perspective view of the document hole puncher when assembled.

Claims (5)

[Claims] (1) having two parts pivotally connected to each other for punching two holes simultaneously in a document using a cylindrical blade, each part having a punching die cooperating with the blade; In the document hole puncher, both of the above parts (1, 2)
have the same shape and each part (1 or 2) has one hole (11 or 21) acting as a punching die and cooperating with the hole (21 or 11) of the opposite part (2 or 1). A document hole puncher characterized in that it has a cylindrical blade (12 or 22). (2) Each of the parts (1 or 2) has two supporting protrusions ( 1
3, 14 or 23, 24), of which two supporting protrusions (13, 23) are integrally formed with cylindrical support pins, and the other supporting protrusions (14, 24
2. Document punch according to claim 1, characterized in that the hole puncher ) has a support hole. (3) Each part (1 or 2) has two strip-shaped edges (15, 16 or 25, 26) provided in the same plane.
) and a central portion (17 or 27) provided in a plane parallel to the plane, as claimed in claim 1 or 2. vessel. (4) Claims 1 to 3 characterized in that the supporting projections (13, 14, 23, 24) are bent away from the strip-like edges (16, 26). A document hole puncher listed in any one of the following. (5) A projecting plate (18, 19, 28, 29) is bent in the central region of the strip-like edge (16, 26) with supporting projections (13, 14, 23, 24). Document hole puncher according to any one of claims 1 to 4, characterized in that it is provided with a document hole puncher according to any one of claims 1 to 4.