EP0433585B1 - Device for binding perforated single sheets - Google Patents

Description

The invention relates to a device for combing and binding punched single sheets into a prefabricated wire comb, which consists of a plurality of tines bent into circles and connected to one another, which are inserted into the punched-out areas, with a closing device which provides a movable locking bar with a counterpressure plate for Bending the prefabricated wire comb into the circular shape.

With devices of this type, as are known, for example, from DE-A-3 903 506, single sheets for brochures, catalogs, Calendar, instructions for use, operating instructions, etc. bound like a book.

After the holes have been punched into the single sheets, they are manually inserted into the prefabricated wire comb in the desired order. For this purpose, the wire comb is not yet bent into its final circular shape, but is still open at the top, so that the teeth of the wire comb can be inserted into the punched-out leaves. When all sheets have been inserted, the wire comb is placed by hand under the locking bar of the device. The locking bar is then moved downwards using a lever, which clamps the wire comb between the locking bar and the counter pressure plate. During the further downward closing movement, the wire comb rolls up accordingly and forms the closed circular shape, with which the single sheets are bound.

However, inserting or combing the single sheets into the tines is tedious and time-consuming with such a binding process. If you insert the leaves into the tines by hand, you need to be adept. Then carefully with the wire comb and the sheets inserted in it be avoided, especially when inserting under the locking bars so that they do not slip out of the teeth of the wire comb. When binding such a ring binder, which is to be provided with a suspension device, such as a calendar, the suspension device must additionally be laboriously threaded into the wire comb immediately before the binding process under the locking bar.

In practice, a simplification is already known in such a way that a prefabricated wire comb is clamped under a magnetic rail, with which the wire comb is at least held and thus the insertion of the single sheets with both hands becomes easier. However, it is also disadvantageous that, after insertion, the wire comb, which is still open, has to be transported by hand to the locking bar with appropriate care.

The present invention is therefore based on the object of improving a device of the type mentioned at the outset in such a way that its handling is facilitated, in particular in which combing and binding can take place more quickly and more easily.

According to the invention this object is achieved in that Holding members are arranged on the counter-pressure plate, which position at least a part of the prongs of the wire comb, and that the counter-pressure plate with the holding members can be moved from the position in which the single sheets are inserted into the wire comb under the locking bar for binding.

By means of the holding members according to the invention, the wire comb is held for combing in the individual sheets, so that the operator has both hands free for the combing-in process. During the combing process, the wire comb is held securely by the holding members. An additional work step is then avoided by the displaceability of the counter-pressure plate according to the invention in the manner specified, one of the main advantages being that it prevents sheets from slipping out of the wire comb which is still open.

Another advantage is that you can now insert a possible suspension device into the wire comb after combing the single sheets and before inserting them under the locking bars, without having to do this by hand - as was previously the case - can slip out again or move.

Due to the simplification of the device according to the invention, it is now also suitable for office purposes, because ring binders bound in this way have generally only been used in printing works, bookbinding and the like. Like. Manufactured, since skill and practice were necessary to handle them.

A simple embodiment of the holding members can consist in that they have pins projecting upwards from the counterpressure plate.

The upper ends can also serve in a simple manner as hold-downs for the teeth of the wire comb, with which the latter is positioned even more securely.

The backing plate can be moved in the desired manner in various ways. In general, a simple sliding guide in the housing of the device will be sufficient.

The displaceability of the Rann counter-pressure plate can be achieved in a simple manner by moving it accordingly by hand. However, actuation by a lever device is also possible.

If you move the counterpressure plate by hand in a simple way, then it is advantageous to provide recessed grips in the contact surface of the counterpressure plate or a plate connected to it, so that one or more fingers can be gripped when the individual sheets are combed into the wire comb reach under the bottom sheet and move the entire unit more easily.

It is advantageous if it is provided that the counter pressure plate can be displaced in the direction of the locking bar against the force of a return spring. In this way, the bound ring binder is automatically pulled back into the starting position after the binding process has ended and can thus be removed in a simple manner, after which the next combing-in process can take place after a prefabricated wire comb has been inserted again.

A return spring device can be achieved in a variety of ways. In a simple manner it can be provided that the return spring device has at least one spring, which has one end on the counterpressure plate or a part connected to it and the other end on a fixed one Part of the housing is attached.

It is advantageous if it is provided that the holding members are adjustable in height.

In this way, wire combs with different diameters can be processed in a simple manner in the same device.

The height can be adjusted in a variety of ways, with care being taken to ensure that, as far as possible, all of the holding members are correspondingly adjusted in one operation or with a few handles.

In a further development of the invention it can be provided that the rear plate of the locking bar is provided with cutouts into which the hold-down devices of the pins can be inserted.

In order to be able to process wire comb bindings with small diameters well, it may be necessary to bring the holding links as close as possible to the rear plate of the locking bar so that individual sheets do not slip out. If there are corresponding recesses in the rear plate are provided, the parts of the hold-down device which are bent backwards can, if necessary, even be pushed into the recesses in a non-disturbing manner, so that the holding members can be brought as close as possible to the rear plate.

In practice, the spacing of the holding members from each other by one inch has proven to be the most advantageous, because in this way the device according to the invention can be used to bind the three divisions generally used, namely 4: 1, 3: 1 and 2: 1 - related to a customs division.

Of course, if necessary, it is also possible to make the distances between the holding members adjustable.

An exemplary embodiment of the invention is described in principle with reference to the drawing.

Fig. 1

einen Längsschnitt durch die erfindungsgemäße Vorrichtung in Ausgangsstellung

Fig. 2

einen Längsschnitt entsprechend dem Schnitt nach der Fig. 1 in Schließstellung des Drahtkammes

Fig. 3

eine Draufsicht auf die Vorrichtung nach den Fig. 1 und 2, wobei in der oberen Hälfte die Ausgangsstellung und in der unteren Hälfte die Schließstellung dargestellt sind

Fig. 4 und 5

vergrößerte Schnittdarstellungen der Halteglieder gemäß Ausschnitt A der Fig. 1.

It shows:

Fig. 1

a longitudinal section through the device according to the invention in the starting position

Fig. 2

a longitudinal section corresponding to the section of FIG. 1 in the closed position of the wire comb

Fig. 3

a plan view of the device according to FIGS. 1 and 2, wherein the starting position and the closed position are shown in the upper half in the upper half

4 and 5

enlarged sectional views of the holding members according to section A of FIG. 1st

The device according to the invention is basically of a known type, which is why only the parts essential to the invention are discussed in more detail below.

A punching device 2 is arranged in a housing 1 in the rear area, in which individual sheets are inserted into a slot 3 for punching out the holes, wherein they rest against a rear wall 4. The corresponding recesses or holes are punched into the individual sheets by means of a corresponding number of punching dies 5, which are actuated via pressure pieces 6. The pressure pieces 6 are a gear device 7 and a together Working gear transmission 8, the shaft 9 is actuated by a lever, pushed back and forth accordingly horizontally. A stop 10 is used for the exact placement of the single sheets to be punched.

A threading and locking device is located in the front area of the housing. To thread the perforated single sheets in a desired order, an open wire comb 11 is placed on a support surface which is connected to a counter pressure plate 13. The support plate 12 can be moved in the horizontal direction together with the counter-pressure plate 13 in a guide (not shown) in the housing 1. In the central area of the device there is a locking device 14 which has a locking bar 15 which can be displaced in the vertical direction. The locking bar 15 is displaced together with a vertical rear plate 16 in the vertical direction by means of a toothed rack 17 and a gearwheel device 18 which cooperates therewith. The adjusting shaft 19 of the gear device 18 is actuated by a lever 20.

One end of a spring device 22 is fastened to the counterpressure plate 13 or a sliding plate 21 connected thereto, while the other end of the spring is supported on the housing 1, the support being in the front region of the housing 1.

From below through the counter pressure plate 13, a plurality of holding members in the form of pins 23 are inserted through corresponding holes in the counter pressure plate 13. The pins 23 are next to each other at an inch spacing. On the upper side, the pins 23 protrude upward beyond the contact surface and are angled backwards in the horizontal direction at their upper ends, with which they form hold-down devices 24.

The device according to the invention now works in the following way:
The device is in the position shown in FIG. 1 for inserting the single sheets previously provided with holes in the punching device 2. In this position, single sheets 25 (see dashed line) are inserted into the wire comb, which is still open and which is provided in the usual manner with a large number of prongs which are inserted through the holes in the single sheets. The correspondingly previously positioned wire comb 11 is held by the holding members 23, the hold-down devices 24 holding the lower teeth of the wire comb 11, whereby there is both a positioning of the wire comb 11 and also prevents the wire comb from twisting. The individual sheets 25 can thus be inserted or combed from above. The wire comb 11 is securely positioned by the pins 23 and the hold-down 24. This means that in spite of the ring that is still open, hanging devices such as a piece of wire for a calendar can also be inserted.

If the single sheets are completely inserted, the counter-pressure plate together with the support surface 12 and the sliding plate 21 are shifted in the horizontal direction in the direction of the arrow in FIG. 1, to the extent that the counter-pressure plate 13 comes to rest under the locking bar 15 (see FIG ). If this is the case, the lever 20 is actuated and, via the gearwheel device 18 and the toothed rack 17, the closing bar 15 is moved downwards together with the rear plate 16. During this downward movement, the wire comb 11 is rolled in until a closed ring is obtained, which ends the ring binding.

After the closing process is completed, the lever movement is reversed and the locking bar moves back moved up. Due to the spring force of the spring tension that occurred during the displacement process of the support surface 12 with the counterpressure plate 13, the unit, consisting of the support surface 12, counterpressure plate 13 and slide plate 21, is pulled back into the starting position (to the right in the drawing). The finished ring binder can thus be removed and a new open wire comb 11 inserted and held in place by the holding members 23.

As can be seen from FIG. 1 and the upper half of FIG. 3, the rear plate 16 is provided with vertical cutouts 26 which are arranged such that they are aligned with the pins 23 and their hold-down devices 24. As can be seen from FIG. 2 and the lower half of FIG. 3, it is thereby possible to move the counter-pressure plate 13 as close as possible to the rear plate 16, the horizontal parts of the hold-down devices 24 being able to be pushed into the recesses in the rear plate 16.

The displacement of the displaceable unit can be done by simply moving the package of single sheets 25 horizontally to the left (as shown in FIG. 1), with the support surface 12, the pressure plate 13 and the sliding plate 21 accordingly can also be moved by friction. For this purpose, one may provide recessed grips 27 (see FIG. 3) in the support surface 12, so that it is easier for Rann to reach under with the fingers and thereby ensure that all the sheets are taken along and the pushing process can be carried out properly.

Of course, the displacement can also be carried out by lever actuation or by actuating handles (not shown) which protrude upward from the support surface 12.

In order to hold wire combs with different diameters, in particular very small and also very large wire combs 11, without problems, the pins 23 can be height-adjustable in such a way that their height above the contact surface 12 can be adjusted so that the hold-down devices 24 always hold the prongs of the wire comb to avoid twisting the wire comb.

A height adjustment device is shown, for example, in FIGS. 4 and 5, FIG. 4 showing the positioning of a pin for a very small wire comb 11, while FIG. 5 shows the positioning a very large wire comb 11 can be seen. For height adjustment, the pins 23 have a thread in the rear or lower area, onto each of which an adjusting nut 28 is screwed. Spacers 29 can be arranged between the adjusting nut 28 and the underside of the counterpressure plate 13, which spacers can also have different thicknesses according to the desired height.

With wire combs with a smaller diameter, it can sometimes happen that during the closing movement, i.e. when the wire comb rolls in, the holding members 23 or hold-down devices 24 cannot always slide out of the teeth of the wire comb properly. For this reason, it is advantageous if, for such cases, the downward movement of the locking bar, i.e. when the wire comb 11 rolls in, the holding members or pins 23 bend back somewhat (see arrow in FIG. 2), so that they come free from the teeth of the wire comb.

This bending back, ie the removal of the pins from the rear plate 16 can be coordinated, for example, with the closing movement of the locking bar 15, so that no separate actuation is required for bending the pins 23 back. One way of doing this can consist, for example, in that the pins are manufactured from a stamped part, these protruding from a stamped base plate. If you then, for example, insert a wedge during the downward movement of the locking bar 15 also from above between the rear plate 16 and the pins 23 or the base plate on which the pins are arranged, the pins are forcibly bent away. It is only necessary to ensure that the pins have sufficient inherent elasticity so that they can then spring back again. Of course, the pins 23 can instead also be pushed back a little by hand or by mechanical movement in the direction of the starting position.

Claims (12)

1. Device for combing-in and binding perforated single sheets to form a prefabricated wire comb, consisting of a plurality of teeth which are connected together and bent into circles and are inserted into the perforations, comprising a closing device having a movable closing bar with a counter-pressure plate for bending the prefabricated wire comb into the circular shape, characterised in that retaining members (23) are arranged on the counter-pressure plate (13) or on a component connected to the counter-pressure plate and position at least some of the teeth of the wire comb (11), and that, for binding, the counter-pressure plate (13) with the retaining members (23) can be displaced under the closing bar (15) from a position in which the single sheets (25) are inserted into the wire comb (11).
2. Device according to claim 1, characterised in that the retaining members of the counter-pressure plate (13) have upwardly projecting pins (23).
3. Device according to claim 2, characterised in that the upper ends of the retaining members (23) are designed as hold-down devices (24) for the teeth of the wire comb (11).
4. Device according to claim 1, 2 or 3, characterised in that the counter-pressure plate (13) can be displaced via its horizontal bearing surface (12) in a sliding guide (sliding plate 21) of the housing (1).
5. Device according to claim 4, characterised in that the bearing surface (12) of the counter-pressure plate (13) or a plate connected thereto or the housing is provided with recessed grips (27).
6. Device according to one of claims 1 to 4, characterised in that the counter-pressure plate (13) can be displaced via a lever device.
7. Device according to one of claims 1 to 6, characterised in that the counter-pressure plate (13) can be displaced against the force of a return spring device in the direction of the closing bar (15), the return spring device having at least one spring (22) which is secured via one end to the counter-pressure plate (13) or a component (21) connected to the counter-pressure plate (13) and via its other end to a fixed component of the housing (1).
8. Device according to one of claims 1 to 7, characterised in that the retaining members (23) are vertically adjustable.
9. Device according to claim 8, characterised in that the retaining members (23) are inserted through vertical bores in the counter-pressure plate (13) and are vertically adjustable by a screw connection (28).
10. Device according to claim 3, characterised in that the rear plate (16) of the closing bar (15) is provided with recesses (26) into which the hold-down devices (24) of the pins (23) can be inserted.
11. Device according to one of claims 1 to 10, characterised in that the retaining members (23) are arranged an inch apart or that their horizontal spacings are adjustable.
12. Device according to one of claims 1 to 11, characterised in that the retaining members (23) can be moved away from the teeth of the wire comb (11) during the closing movement.

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