JPH0192099A - Perforator for single-hole document - Google Patents

Abstract

PURPOSE: To facilitate the manufacture and assembly of individual parts of a key punch by forming a lower member of the key punch with two half-length parts, being made up into mirror image symmetry with each other to a vertical separate surface, and being connected with each other on this separate surface. CONSTITUTION: A lower member 15 in this single holed document key punch is comprised of those of mutually mirror-image symmetrical half-length parts 15' and 15" against a vertical separate surface 24 on the whole. On this vertical separate surface 24, these half-length parts 15' and 15" are joined together by means of threading or bonding so as to border a chip receiving chamber 12 being connected to the lower end of a die hole 28 via a chip path 25 on the inside. In addition, both these half-length parts 15' and 15" have a semicylindrical recess each, and this recess forms a cylindrical case 30 owed upward for a return spring 20 and a punching pin 14. At the time of assembling, before a presser lever 22 is supported, the return spring 20 and the punching pin 14 provided with a broad head part 32 are successively or simultaneously assembled after being inserted into the cylindrical case 30 from the upside.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention provides a lower part with a punching pin guide and a die hole, in which an insertion slot and a chip catch chamber are provided. and a single hole document punch having a pressure lever pivotably mounted on the lower member and acting on a punching bin under the action of a return spring.

[Prior art]

A single-sized document punch as described above can be used, for example, as a pocket punch.

However, it is basically possible to combine several single-hole document punches to create a punch that punches several holes.

[Problems to be solved by the present invention]

The invention is designed in such a way that the manufacture and installation of its individual parts can be easily automated, and in this case a reliable and robust structure is guaranteed. It is an object of the present invention to provide a single-sized document punch of the type.

[Means to solve problems]

The present invention achieves the above-mentioned problems by the configuration described in the claims. Other advantageous features and further shapes result from the embodiments shown below.

[Action and effect]

The lower part according to the invention consists of two halves, which are made essentially mirror-symmetrical to each other with respect to a vertical separation plane and are in particular made of plastic injection-molded parts or aluminum die-cast parts, which halves are Particularly in the area of the separation plane, fasteners, clips (
C1ipsen), rivets, adhesive (Kleben),
Or they are connected to each other by screws. The walls of the plurality of halves together define a chip receptacle that bounds the chamber. Furthermore, the half parts according to the invention each have a semi-cylindrical cavity which is open towards the top and which is covered by a pressure lever and which includes a cylindrical case which receives the spring and the punching pin. When assembling a document punch from the six individual parts that form it, a pusher (Dru
The spring and the punching pin can be inserted one after another or simultaneously into the cylindrical case from above, before the pressing lever is pivotally mounted to the lower part of the perforator. Such a mounting method is particularly easy to automate.

According to a preferred embodiment of the invention, the half part is provided with a slit-like recess, which complements a wide slit and forms an insertion groove in the wide slit, in which the punching pin guide and It has a die hole into which a metal insertion part bent into a U-shape is inserted. The advantage of this insert is that the punch pin guide and the die hole are in one part and are fixedly connected to each other, so that the punch pin guide is reliably guided into the die hole. On the basis of the symmetrical shape of its insert, the insert element can also be used as a turning die hole.

The provision of a groove in the area of the slit-like recess for a form-locking and secure reception of the insert makes it possible to attach the insert to the perforator lower part particularly easily and reliably.

Another advantageous embodiment of the invention provides that the halves have groove-shaped recesses facing each other and having open ends.
A groove-like recess is arranged which forms a guide groove for receiving the measuring strip. The measuring strip is made of a resilient and deflectable tape-like material, in particular spring pant steel (
consists of Federbands tah I),
At one end there is a stopper angle (Anschlagwi) which is rotatable about an axis perpendicular to the plane of the band.
nkel) is placed for the edge of the document to be punched. The groove-like recess forming the guide groove advantageously has a straight part arranged in the layer region of the lower part and a part bent upwards and arranged in the rear region of the lower part. . The guide groove accommodates the measuring strip when it is not in use.

To fulfill the stopper function, the measuring strip taken out from the guide groove is inserted into a laterally extending through hole located below the insertion groove, and a format marking is engraved on the upper surface of the measuring strip.
After the measurement (MaBgabe), it is inserted deeply or shallowly. The pivotable stopper angle allows precise double drilling of the format at both its end positions.

Another advantageous configuration according to the invention is that several single-sized document punches are arranged in an Abstandshalter
) allows it to be combined as a multi-hole punch with pre-given hole spacing. For this purpose, a distance rod of a predetermined length is attached to at least one of the two halves of the upper part of the document punch.
ge) is provided with a hole or opening for receiving it.

〔Example〕

The invention will now be explained in more detail on the basis of an embodiment schematically shown in the drawing.

Due to its small dimensions, the single-sized document perforator shown in the drawings is suitable above all as a pocket-type perforator. Lower member 1 inserted
5 and a pressure lever 22 which is supported for rotation about a horizontal axis 16 on the lower part 15 and which acts on the punched pin 14 under the influence of a return spring 20 by means of a pressure body 18 formed as a crossbar. ing.

The lower part 15 has halves 15', 15' which are substantially mirror images of each other, with their vertical separating surfaces 24, and which halves have a chip channel (Schnitzelka) in their interior.
A chip catcher connected to the lower side of the die hole 28 via the die hole 26 is threaded or adhesively bonded so as to border the chamber.

Furthermore, both half-parts 15', 15' have a semi-cylindrical recess, which forms an upwardly open cylindrical case 30 for the return spring 20 and the punched pin 14. When assembling, before the pressing lever 22 is pivoted,
The return spring 20 and the punched pin 14 with wide head 32 can be inserted one after another or simultaneously into the cylindrical case 30 from above. Therefore, the punched bin 14
The spring 20 can be easily replaced when necessary.

The punching pin guide 34 and the opening forming the die hole 28 are arranged in a generally U-shaped bent metal insert 36 which has two half-parts 15', When assembling the lower part 15 from 15', it is inserted into the groove of the slit-like recesses 10', 10', where it is embedded in a form-restricting manner by the connection of the half parts 15', 15'. The punching pin guide 34 and the die hole 28 are thus immovably connected to each other, which ensures correct insertion of the punching pin 14 into the die hole 28 regardless of the load.

In the lower region and the rear region of the lower part 15, the half part 1
Slit-like channels 3B', 38 with open ends at 5', 15''
# is provided, the slit-like channel forming an undercut guide groove 38 for accommodating the flexible measuring strip 40. The guide groove 38 has a linear section in the front circumferential region of the perforator upper part and opens in the rear region into a curved section 42, which in the embodiment according to FIG. 1 is completely circular. In the case of the embodiment shown in FIG. 5, a partially circular deflection portion opening into the upper linearly extending portion 44 is formed. In the embodiment of FIG. 5, with the measuring strip 40 inserted, the chip receptacle is secondarily used as a closing means for the opening 46 above the chamber 12.

As can be seen in Figures 6a and 6b, the measurement strip 40
transverse to be inserted for example roll measuring rod
It consists of a spring steel band 48 bent in the directions , . - angle piece (Winkelstick) 52 which can be pivoted into two end positions around an axis 50 at the - end;
is pivotally mounted on the measuring strip together with a stopper 54,
A stopper pin 56 is caulked to the other end. The guide grooves 38, 24, 44 serve only for storing the measuring strip 40 when not in use. For use, the measuring strip 40 is removed from the guide groove 38 and inserted into a laterally extending through-hole 5 in the upper part 15 of the perforator. The measuring strip 40 is engraved with a format scale;
The 8-format scale, together with the stopper 54, makes it possible to punch format-appropriate holes in the document.

An opening 58, which is closed in the embodiment of FIG. 1 and open-rimmed in the embodiment of FIG. 5, is provided for the measuring strip.

The pressure lever 22 with the bends 60 on the sides is connected in the front region by the penetrating pin 16 to the half parts 15', 15.
It is supported on a # sturdy base block (Lagerbock) 62. In the rear region of the pressure lever 22, it further has an open-rimmed opening 64 on one side and a closed-edged opening 66 on the other side, which hole is bounded by the perforator upper part and is movable. A locking pin is provided to accommodate 6 days. In the case of Fig. 1, there is a foamed strip on the inner surface of the pressure lever (Set
70 is pasted, and when the strip is in one position of the pressure lever, the chip catcher is in the opening 12 facing towards the top of the chamber 12.
block. When the pressure lever is in the raised position, the shoulder 72 of the lower part forms a limit stop against which the narrow edge 74 of the pressure lever 22 bent forward comes into contact.

The embodiments of the present invention are as follows.

(1) One slit-like recess (10', 10'') is provided in each of the half parts (15', 15'), the slit-like recess forms a wide slit, and the slit-like recess is inserted into the slit-like recess. According to claim 1, characterized in that a metal insert (36) formed with a slit (10), having a punching pin guide (34) and a die hole (28) and having an approximately U-shaped bend is inserted therein. single-sized document punch.

(2) The unit size according to the above item 1, characterized in that a groove for accommodating the insertion member (36) in a shape-restricted manner is provided in the region of the slit-like recess (10', 10'). Document punch.

(3) In the region of the lower half portion (15', 15') of the slit-like recess (10', 10''), the chip catcher is located in the chamber (12).
3. A single-hole document punch according to claim 1 or 2, characterized in that a chip path half is formed which forms a chip path (26) opening into the hole.

(4) The chip catcher has a chamber (12) facing upwards and a press lever (2).
4. Single-sized document punch according to claim 1 or any one of the preceding claims, characterized in that it has an opening (42) covered by 2).

(5) The single hole s according to claim 1 or any one of the above items 1 to 4, characterized in that the pressing lever (22) is lockable to the lower member (15) in the pressed down position.
perforators.

(6) On the pressing lever (22) in its locking position the chip catcher is arranged with a closing member made of foamed material or foamed rubber as an elastic strip (70) which closes the chamber opening (46). The single-hole document punch according to item 4 or 5 above.

(7) Guideways (38', 38#) with open ends facing each other are provided which are arranged in the half-parts (15', 15") and which guideways are connected to the measuring strips (40). The grass-sized document punch according to claim 1 or any one of claims 1 to 6, characterized in that it is formed to accommodate a.

(8) the measuring strip (40) consists of a resilient and deflectable tape-like material (48), in particular a spring steel band;
The groove-like recesses (38', 3B') forming the guide path are connected to the straight parts (38', 3B') arranged in the layer region of the lower member (15).
8. The grass-sized document punch according to claim 7, characterized in that it has a portion (42) arranged in the rear region of the lower member (15) and bent upward.

(9) The opening (46) of the chamber (12) is the guide path (
3rd, 42.44)
10. The grass-sized document puncher according to item 8, which is capable of being closed by means 0).

0ffl The half-parts (15', 15'') are pierced in order to insert the measuring strip (40) with stops (54, 56) in the lower region of the slit-like recess (10', 10'). 10. Single-hole document punch according to claim 1, characterized in that there is in each case a slit recess forming a through opening (58).

θ1) The pressing lever (22) has a bent part (60) on the side that partially grips the side surface of the lower member (15), and the lower member (15) is attached to the bent part (60) near one end of the free lever.
2. The locking member (68) disposed in the locking member (68) is provided with at least one recess (64, 69) for locking the pushing lever (22) in the pushed down terminal position. Any 1 of item 1 to item 1O
Single-hole document punch described in .

0ri The grass size according to claim 1 or any one of the above items 1 to 11, characterized in that the half body portions (15', 15'') are formed as injection molded members of synthetic resin. Document punch.

0. The grass-sized document perforation according to claim 1 or any one of items 1 to 11, wherein the half portions (15', 15') are formed of an aluminum die-cast member. vessel.

041. or any one of the preceding claims 1 to 12, characterized in that the opening (42) forms a wrapping cylinder for the measuring strip (40) in the rear region of the lower part (15). The grass-sized document punch described in .

051 One semi-cylindrical recess is arranged in each of the half parts (15', 15'), and if the recess opens upward and is covered by the pressing lever (22), the spring (20) and the punching pin (14) Single-hole document punch according to claim 1 or any one of the preceding claims, characterized in that it forms a cylindrical case (30) containing a cylindrical case (30).

Q51 A single-hole document punch, characterized by a plurality of grass-sized document punches according to claim 1 or any one of claims 1 to 14, which can be connected to each other by spaced-apart holders.

071 characterized in that at least one of the two half-parts of the document perforation layer lower part (15) is provided with at least one hole or opening in each case for accommodating a distance frame forming a spacing holder. 17. The document punch according to item 16.

[Brief explanation of the drawing]

1 is a side view of the grass-sized document perforator opened and partially cut away in the area of the central separation plane; FIG. 2 is a sectional view of the entire perforation layer along section line 2--2 in FIG. 1; , FIG. 3 is a sectional view of the entire perforated layer along section line m3-3 in FIG. 1, FIG. 4 is a sectional view of the entire perforated layer along section line 4-4 in FIG. 1, and FIG.
The figure corresponds to FIG. 1 of a modified embodiment of the grass-sized document punch, and FIGS. 6a and 6b can be used in relation to any one of the punches from FIGS. 1 to 5. FIG. 3 shows a side view and a top view of a measuring strip with a stop that can be used; 10... Insertion groove 12... Chip receiver is chamber 14... Punching bin 15... Lower member 1
5', 15"...Half part 20...Spring 22...
・Press lever 24...Separation surface 28...Die hole

Claims (1)

[Claims] (1) Pressure acting on a lower member having a punching pin guide and a die hole, and provided with an insertion slit and a chip receiving chamber, and a punching pin pivotally connected to the lower member and under the action of a return spring. In a single-hole document punch with a lever, the lower part (15) has two halves formed approximately mirror-symmetrically to each other with respect to a vertical separating surface (24) and connected to each other in the region of said separating surface (24). A single-hole document punch consisting of a body part, characterized in that the walls of the halves together bound a chip receiving chamber (12).