DE2062982C3 - Paper punching machine - Google Patents

Description

The invention relates to a machine for drilling stacks of sheets of paper or similar material along a line, with a fixed table to accommodate the stack of sheets to be processed, mi one arranged above the table continuously borrowed from the stack of sheets by spring pressure lowering jaw, with at least one moving opposite the table normal to the plane of the same able plate, soft a series of mutually frictionally connected drills in parallel OrtlnuiiiZ carries which are driven together at the same time pierce the "ülattstapel" (French patent specification 1 57S539).

Such a known machine has the disadvantage that two machining operations are required are to put holes in the stack in parallel to drill with the smallest possible distance.

The invention is based on the object of creating a machine of the type mentioned at the beginning which allows closely adjacent, parallel holes to be produced in one operation.

The solution to this problem can be seen in the fact that there is one on the opposite side of the table further plate movably guided on columns with drills arranged in a row is provided whose axes lie between the drilling axes of the other plate, with both plates under the action are designed to be movable by compression springs in the direction of the material to be cut. Such a machine still has the advantage that d- ° <3 is the feed movement the drill adapts to the hardness of the material to be machined during the cutting process.

The invention is more schematically illustrated below with reference to hand Drawings of several exemplary embodiments additionally described.

F i g. 1 is a front view of the device according to the invention for producing round holes;

FIG. 2 is a sectional view taken along line FI-II of FIG. 1;

F i g. 3 is a top plan view of FIG. 2 with partial tear-off;

Fig. 4 is a front view of a drill for piercing the paper;

Fig. 5 is a top plan view of the drill of Fig. 4;

Fig.6 is a partial view showing how det Stack of paper is compressed during piercing;

Fig. 7 is a schematic representation of a machine for making rectangular holes;

Figure 8 is a top plan view of the machine of Figure 7;

9 and 10 show perspective viewers from two modified thorns;

Fig. 11 schematically shows the size ratio between the drill and the mandrel.

The punching machine for cylindrical holes consists of a U-shaped frame 1 with a table 2,

<t

λ elcher four on both ropes of the table stretching, stretching, having pillars 3 firmly connected to this

A clamping jaw 4 is attached to these columns 3. which the paper sheets F on the table 2 .Irücki. and two movable plates 5 and 6 which hold special drills 7.

A balanced fetler 8 is provided on each column 3, between the corresponding one Drill holder plate and the head 3 'of the column.

The spring tension of the normally compressed spring 8 causes the displacement in Direction of the blades / · 'of the two rows of drills?, With the axes of the drills sitting on the plate 5 are arranged on the plate 6 between the axes of the drills.

This arrangement offers two advantages:

1. The movement of the drill depends on the resistance of the paper, and

2. The center-to-center distance between the holes can be very small.

Dp: Sieueiung the clamping jaw 4 and tier IMaHe 5 ! -! by means of two spindles 9 passing through it, L'isiei. which are each seen with two stops 10 and 11 * S

D-. Stop 10 is located under the plate 5. v.ähi η ;! the stop 11 in one with the clamping jaw 4 form.ichlüssigen housing is housed, with a spring 13 between the stop and the (Underside of the housing is provided.

When the spindles are displaced in the direction of the arrow F1, the stops 11 press the springs 13 together and press the clamping jaw 4 against the paper sheets located between this clamping jaw and the table 2; the springs 13 only have the task of compressing ilen more or less thick stacks of paper.

At the same time, the stops 10 allow the springs 8 to tilt, relax and the drill holder plate 5 to nod. *O

Control of the lower plate; 6 is the same: way ensured by two spindles 14, each of which has a sight 15 extending over the plate 6.

The simultaneous control of the spindles 9 and 14 is ensured, for example, by a lever 16 (Fig. 2). find its hinge pin on both has a disc 17, on the outer periphery of which two levers 18 and 19 are attached.

Each of these Flebel 18 is supported with its one linden -liif an eccentric bearing pin 20 which is supported by a Hilde of a swing arm 21, the other F.ndc of which is supported on the corresponding spindle 9. Each of the two levers 19 is in the same way via a bearing pin 22 and a swing sj arm 23 connected to its spindle 14.

F i g. 1 and 2 show the moving parts in a position corresponding to the end of the through hole. If the lever 16 is moved in the direction of the arrow Fl (FIG. 2), the levers 18 and 19 set the bearing journals 20 and 22 in rotation in the direction of the arrow Fi and take the swing arms 21 and 23 with them, which move the spindles 9 and 14 in an animal direction Fl opposite direction determine. This displacement of the spindles 9 and 5 14 causes, on the one hand, the spacing between the plates 5 and 6 and the compression of the springs 8 and, on the other hand, the clamping of the clamping jaw 4.

The actuation of the lever 16 can be done manually or automatically when the machine is in a larger, automatically operated whole isi.

The control of the drill 7 is done via a Electric motor 24, which has a wide drive pinion 25. This engages in gears 26 and 27, which in turn mesh with gears 28, 29 and 30. Each gear 28, 29 and 30 meshes with a gear 31, which is clamped onto the holding device of a drill 6, which in turn is shown in Gears 32 of the adjacent drill engages.

The gears 26 to 32 are between two flanges 33 and 34 arranged on a plate 35 arranged, the whole then forming the plate 5 and 6, respectively.

A flywheel 36 attached to the end of the shaft of the motor 24 is used during the drilling process the stored kinetic energy is available and thus the limitation of the performance of the

Engine.

Fiü.d shows that with the clamping jaw 4, form-fitting drill bushings 37 extend beyond the underside of the clamping jaw and press on the paper F in order to avoid excessive forces being released. in order to ensure the compression during the piercing of these sheets, which moreover press with their cut surface against a stop 38 of the table 2 (FIG. 2).

F i g. Figures 4 and 5 show that the drills have a very pointed end and the cutting lips 39 extend taper sharply towards the rear in order to avoid overheating due to friction and the counter-torque to reduce.

In the following a special embodiment of the invention will be explained, with the principle the machine described above rectangular holes and especially square holes in one Stacks of paper can be produced.

F i g. 7 shows this machine made up of three different Devices consists, namely a device for making round holes, a device to shape these holes into square holes and a device to .τι transporting the perforated sheets from one device to another. The first device consists essentially of a table 40 on which the sheets F are pressed together by means of a clamping jaw 4 actuated by a spring 42 will.

The displacement of the clamping jaw 4 depends on the upper drill holder plate 43.

The drills del Plaiten 43 and 44 are by means of two electric motors 45 attached to the corresponding plate. However, this can also done with a single engine described above.

The second device consists of a table 46 located at the level of table 40 and a movable one.] Clamping jaw 47 which presses the sheets against the table 46.

Above the clamping jaw 47 there is one Holding head 48 for the rectangular mandrels 49, the Absiani 'between the mandrels being equal to the Haifte of the distance / wipe the drills of one of the drill support plates 43 and 44 is.

Fin the cams i51 and 52 actuating motor guaranteed the movement of the mandrels 49 and the clamping jaw 47.

The mandrels can continuously oiler \ ibnei'-nd be lowered.

The third device serves / to I ιanspotl tier Dialer from the first to the wi'ile device and / entrierl the axes of the round holes made in the most device on those of the mandrels of the / wide device.

I- ig. H shows that the device / u this /.weck consists of a transport table 5Λ on at the height of tables 40 and 46 and one in the extension of the stop at table 4 (1 located brim 53 '(this stop is shown in Fig. 2 under the De / ugs / eichen 38).

The table 53 has two elongated slots 54 over which two pairs of plungers 55 overhang which are inserted into the Joints can snap back by swinging in only one direction, using a counterweight to be able to straighten up again.

The tappets 55 are positively locked with a rod 56 connected, which is axially displaceable according to an alternative movement, the variable width is equal to the distance between the two devices.

The movement of the rod 56 can be controlled by an electric motor 57 with a hand crank 58, the free line of which rests on a sliding block 59 which can be moved into the opening 60 of a lever, one of which rests on the body of the machine while the other end via a telcskopartigc ^I: edenu | uei'verbindung 62 superimposed on the pole.

When the plunger 55 moves in the arrow direction / 4 take the matter with you. because they can do not turn in the opposite direction: in the opposite direction, on the other hand, they snap back and get under the stack of paper, but straighten themselves again due to their counterweight dyke aut.

I'm a good positional setting of the pap'.stapel / '■' to achieve in the work equipment, muli one r> Defesligiingspuiikt the pestle on the Si eye 56 can move.

In this case, the rod has oil openings 63, for example. by means of which the distance between the joint axes of the ram can be changed

! '.' can.

By means of the telescope-like Quci connection 62 the running differences between the rod 56 and the I lebel 61 can be absorbed.

The two punching devices and the transport device are synchronized in such a way that a pile of paper punctures with one revolution of the hand crank 58 will.

Fig. ') And K) show two modified embodiments the mandrel with eight cutting edges 64 each, which act like a cutting machine. In the Embodiment according to FIG. 10 are two cutting edges 64 summarized along a curved surface 65: an analogous result can be obtained with flat surfaces can be achieved.

In this way, the paper is not perforated, but cut through, which is why square holes can be placed in the back stacks of paper. I-i g. Ii shows that the diameter of the drill is equal to the cut side of the mandrels. To the

Round holes can be used to facilitate the cutting process Provide the diameter of which is a few tenths of a millimeter larger than that of the mandrels.

Other mandrel shapes can also be provided being. They can have a centering device or a paper pull-out device in their middle. Line such / s! 1 !!! device can also be seen on the table being.

In addition 5 sheets of drawings

·· τ rc

Claims (7)

Patent claims: 1. Machine for drilling out stacks of sheets Paper or similar material along a line, with a fixed table to hold the stack of sheets to be processed, with a continuously arranged above the table through Spring pressure on the stack of sheets of lowering clamping jaw, with at least one opposite the Table normal to the plane of the same movable plate, which is a number of frictionally interlocking connected bores in a parallel arrangement that are driven together at the same time pierce the stack of sheets, characterized in that on the opposite Side of the table (2) another plate (6) movably guided on columns (3) with in one Row arranged drills (7) is provided, the axes of which between the drilling axes of the other P) .. le (S), both plates (5.6) under the action of compression springs (8) in Direction of the material to be cut are designed to be movable. 2. Machine according to claim 1, characterized in that that the upper plate (5) and the clamping jaw (4) of sliding spindles (9) are traversed, which each have two stops (10. 11), the one stop (10) is arranged below the upper plate (5) and the .'weit ·. * stop (11) each in one Housing part (12) of the clamping jaw (4) lies and serves as a shoulder for one F-der (P), the other one End rests on the bottom ilc (ielvfuseteils (12), and that the unn e plate (6) of at least j5 a slidable spindle (14) is traversed. which has a stop (15) above the Plate (6) licgC and that the spindles (9, 14) are coupled to the drive devices (18 to 23) are. 3. Machine according to claim 2, characterized in that that the driven ends of the spindles (9. 14) each with a swing arm (21, 23) are coupled, which on the other hand to eccentric pins mounted in the frame (20, 22) attack, which is coupled via lever (18.19) to a disc (17) provided with the pin are, which can be driven in a partial rotary movement. 4. Machine according to claim 1 to 3, characterized characterized in that the drill (7) attached to the upper plate (5) attaches the clamping jaw (4) to traverse in a known manner in drill bushes (37) and that these drill bushes extend up to over extend the underside of the jaw. 5. Machine according to claim 1 to 4, characterized in that the shanks of the drill (7) on each plate (S, 6) are provided with gears (31, 32) of the same size, which one below the other are in engagement and via intermediate gears (26 to 30) with the drive pinion (25) one Electric motor are connected. 6. Machine according to claim 5, characterized in that the drive pinion (25) is as wide is dimensioned so that it engages the idler gears of both rows of drills. 7. Machine according to claim! to ίί, thereby characterized in that the drills (7) have a relatively pointed head and UaB c | ji .Cutting lips (39) taper sharply towards the rear gene.