DE20312687U1 - cutter - Google Patents

Description

Applicant : SCHWELLING, Hermann
Hartmannweg 5
D-88682 Salem

Cutting device

The invention relates to a cutting device, in particular a lever cutter, for cutting sheet-like or flat material, such as paper, plastic films, films, cardboard, photos and similar materials, in order to give these materials a desired format.
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Cutting devices of this type are known to experts in a wide variety of designs. They usually consist of the functional groups base body / cutting table, blade, cutting material stop, pressing unit and protective unit.

In a lever cutting device, a cutting arm is provided with a preferably curved blade, whereby the cutting arm is pivotally mounted on a bearing at one end in order to guide the material to be cut through a

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Pivoting the cutting arm along a longitudinal edge of the cutting table which has a counter knife.

In order to fix the material to be cut in the region of the longitudinal edge along the cutting area in which the cutting process takes place, it is known to provide a pressing unit in the form of a clamping strip, which in the prior art is actuated by hand pressing or a manually operated pressing unit, as in the paper cutter according to DE 27 23 548 A, or a pressing unit which is automatically controlled during or with the movement of the pivoting cutting arm.
The construction of these well-known press units for operating the terminal strips in question is production-intensive and requires a lot of maintenance.

On the one hand, there is a need on the market for inexpensive, simple cutting devices, for example for occasional use in the private sector, and on the other hand there is a need for higher-quality cutting devices, although in this category the purchase price has increasingly become a decision criterion for purchase.

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Based on this state of the art and the demands of the market, the expert is faced with the task of improving a cutting device, in particular a lever cutter, especially with regard to handling, reducing maintenance and/or manufacturing costs, whereby as a secondary task, safety-relevant features can also be improved or supplemented.

According to the invention, this object is achieved by a cutting device having the features of claims 1 and/or 7, 21. Advantageous embodiments of the invention are the subject of the subclaims.

The new cutting device, which is designed in particular as a lever cutting device, has a one- or multi-part base body, at least one

Side stop, knives, at least one of which is movably mounted, at least one pressing unit and at least one protective unit and is characterized on the one hand in that at least one component of the protective unit, in particular its plate arranged upright in the working position, is arranged on the pressing unit so as to be foldable in the direction of the support surface.

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By folding the plate of the protective unit, the cutting device is significantly lower when not in use, meaning that less storage space is required for storing the cutting device. There are also advantages for transport from the manufacturer to the user, including intermediate storage at the dealer. As the height of the cutting device can be temporarily reduced if necessary, it is no longer necessary to install the components protecting the movement area of the movable blade to reduce the packaging volume and to reassemble them at the dealer or user's premises.

According to a further development of the cutting device, the plate is provided with an angle at its upper edge in the opened position, whereby an upper stop for the movable knife is formed.

In order to allow parts of the protective unit, in particular its plate, to be optionally folded down, it is advantageously provided according to a further development that hinges are arranged on the plate, the latter being attached to a molded part of the pressing unit arranged above the support surface for the cutting material. Hinges each with a locking mechanism with at least two locking positions are preferred.

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Advantageously, the hinges are made of plastic, preferably of a plastic with good sliding properties (self-lubrication).

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According to another development, a nose is formed on the plate which, when in the upright position, projects into a recess in a component of the pressing unit on the handle side and, when the plate is in the folded-down position, projects beyond the knife-side side surface of the pressing unit, thus also beyond the movable knife in the end position.

This design offers the additional advantage that, for safety reasons, the movable knife can only be moved if access from the support surface to the knife area is prevented by the plate of the protective unit in the working position, i.e. in the upward position.
To further improve the protective unit, a web on the handle of the movable knife extends in the direction of the plate to such an extent that a section of the plate is covered by this web, so that the plate is guided between the knife and the web in the movement area of the movable knife, thus allowing the plate to be folded down and the movement area to be released.

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of the moving knife is prevented.

It is provided that the pressing unit consists of a molded part arranged above the support surface of the base body and a push rod which is connected to the pivotable receiving part of the movable knife by means of connecting parts, which is arranged in an area close to the molded part and is mounted and guided there in at least one guide, and the molded part is operatively connected to the push rod by means of at least two connecting bolts.

According to a further development, the guide consists of two guide blocks arranged at a distance from one another, in which the two end areas of the push rod are essentially guided. The connecting bolts are guided with one side in one of the guide blocks and with their other end, which each protrude upwards through an opening in the support surface, are each connected to a section of the molded part.

It is advantageous that the molded part, seen in cross section, is C-shaped and is arranged with its upstanding leg flush with the knife-side wall of the base body on the support surface, wherein the

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The lower, essentially horizontal leg also forms a contact surface.

It is also advantageous that the edge area of the contact surface facing away from the knife is angled upwards in relation to the support surface. In addition, the vertically aligned surface of the molded part is also a protective surface.

Another advantage is that the upper, horizontal

Leg of the molded part also a bearing

/Mounting surface for the hinges arranged on the plate.

Another advantage is that the upper leg of the C-shaped molded part, i.e. the bearing surface, has a downward bend in its free edge area.

It is also advantageously provided that the essentially vertically aligned protective surface of the molded part has, in its end region on the handle side, a recess machined from above into which the projecting nose provided on the plate extends.

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In a special design, the push rod has a recess in its end area on the pivot bearing side, into which a bolt attached to one leg effectively engages. In addition, in the area near the end of the end area on the pivot bearing side, a depression is provided that runs downwards from the upper surface and has slanted transition areas. Furthermore, a run-up slope is provided on the opposite free end area, which slopes down towards the end of the push rod.

A further development also provides that the guide blocks are essentially of identical construction, whereby, viewed in the installed position, a guide sleeve is provided in the upper area of which a connecting bolt is guided and which also accommodates a compression spring for the guided connecting bolt.

In a special design, the guide sleeves each have a centering pin arranged concentrically to the bolt guide, a ring, which is each positively inserted into an opening provided in the support surface, not further specified.

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In a special development of the invention, the guide blocks are made of a fiber-reinforced material, e.g.

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a glass fibre material or a carbon fibre material or a fibre-reinforced plastic.

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Furthermore, it is advantageously provided that the guide block arranged on the handle side in the base body has a stop that extends through a recess in the wall of the base body on the knife side. This stop limits the downward movement range of the movable knife.

In a particularly advantageous manner, a lever cutting device is equipped with one or more of the features described above in order to improve its overall functionality and cutting result and to facilitate handling.

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Further details, features and advantages of the invention emerge from the following description, in which an embodiment of the invention together with design variants are explained in more detail with the aid of schematic representations in drawings.
Show it:

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Figure 1 a new lever cutting device
perspective view;

in

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Figure 2 shows the lever cutting device according to Figure 1 in a frontal view of the knife side;

Figure 3 shows the lever cutting device according to Figure 1 in a frontal view of the cutting material support side;

Figure 4 the lever cutting device according to Fig.3 in a

Cross-section;
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Figure 4a the left side of the cross section according to Fig.4

enlarged;

Figure 4b shows the right side of the cross section of Fig.4 enlarged;

Figure 5a shows the view according to Fig.4a in a more forward sectional plane;

Figure 5b the view according to Fig.4b in a further forward

lying cutting plane;

Figure 6a is a front view of the support side,

Protective plate is folded over;
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Figure 6b shows the section of the lever cutting device shown in Figure 6a in a plan view;

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Figure 7 Figure 8a

and
Figure 8b

in perspective view the additional stop;
the guide unit for the additional stop according to Fig. 7 in a plan view

the illustration in Fig.8a with another position of the movable guide parts.

Figure 1 shows the new cutting device in a perspective view from the right. It consists of a box-shaped base body 2, preferably made from a so-called sheet metal blank, which is also colloquially referred to as a cutting table. The base body 2 has an upper support surface 21 and two opposing side walls 22 and 24, a front side wall 23 and an opposing knife-side wall 25 on or in which the fixed knife 6 is arranged. This base body 2 is supported by several feet 20 against a support surface (not shown).

Along the side wall 22 and at right angles to the knife-side wall 25, a

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Side stop 26 is provided. This side stop 26 is either glued, screwed or otherwise firmly attached to the support surface.

Depending on how robustly or carefully the user handles the cutting device, after a period of time that cannot be determined in advance, very thin cutting material in particular will get caught between the support surface 21 and the lower surface of the side stop 26 resting on the support surface 21. In order to prevent such a problem, in the present invention the left side wall of the side stop 26 facing the support surface 21 is partially covered by

Tenons or projections 26a are designed to be deeper than the opposite side wall. These

Projections/pins 26a protrude in a form-fitting manner through the recess provided in the support surface 21, see Figure 5b.

In the corner area between the side wall 24 and the knife-side wall 25 extending from it, a pivot bearing 28 for mounting the movable knife 5 is arranged on the support surface 21. The cutting knife 51 of this movable knife 5 is arranged facing the knife-side wall 25 of the base body 2 on or in a receiving part 50 and is held in place by several

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Fastening parts 52 are locked in place. The receiving part 50 is movably held at one end by means of a bearing shaft 53 in the pivot bearing 28. At the other end, a handle 54 is arranged on the receiving part 50, which has a protruding bead (not further designated) on the knife side so that the hand cannot slip in the direction of the knife 51. The aforementioned functional parts can also be seen in Figures 2 and 3 in frontal views from different directions.

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In the area of the knife-side wall 25, an assembly of the pressing unit 3 is arranged on the support surface 21. In the embodiment shown, this is a molded part 30, which, viewed in cross section, is preferably C-shaped. This molded part 30 is connected with its lower leg 31 via connecting bolts 30a and 3b to an actuating device belonging to the pressing unit 3 and arranged in the base body 2. The molded part 30 is also held so that it can move in the vertical direction in the direction of the support surface 21 and opposite thereto, in a predetermined area.

In continuation of the vertical leg 32 of the molded part 30, a plate 40 protrudes upwards, which belongs to the protective unit 4. This plate 40 is in the preferred embodiment shown

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Designed to be foldable and secured to the upper leg 33 of the molded part 30 by means of hinges 41 and 42 attached to the same 40. Folding preferably takes place towards the support surface 21.
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At the edge of the plate 40 sloping from the upper point towards the pivot bearing 28, this edge region is angled outwards so that a stop 43 is formed which limits the range of movement of the movable knife 5 upwards.

As part of the protective unit 4 of this cutting device 1, a web 55 pointing in the direction of the plate 40 is arranged on the support surface side of the handle 54. This ensures that the plate 40 is held between the moving knife 51 and the web 55 during the movement of the movable knife from its upper position downwards, i.e. during the cutting movement, and thus cannot swing away or fold down, so that the safety function is maintained during the movement of the cutting knife.

At the bearing-side end 56 of the receiving part 50 of the movable knife 5, a connecting part 57 is provided, which is connected via a leg 58 and a bolt 59 to the actuating device of the

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The actuating device itself and the interaction with the molded part 30 belonging to the pressing unit 3 will be described in more detail later.

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As shown in Figure 3, a ruler 27 can be placed on the side stop 26 in a movable and lockable manner if required, so that a workpiece to be cut can be aligned on both sides in preparation for the cutting process.

In Figures 1 to 3, an arrow 8 on the base surface 29 indicates that a guide unit 8 is arranged on or in the base surface 29 of the base body 2, in which an additional stop 7, see Figure 2, is guided so that it can be moved and locked. The button 88 is part of this guide unit 8. This guide unit 8 and the additional stop 7 will be described in more detail later.

The bottom surface 29 of the base body 2 can be formed as a surface over the entire surface or in sections. It is within the scope of the invention to form the bottom surface 29 by appropriately bending sections of the side walls 22 and 24 and the knife-side wall 25 and the front wall 23; such an embodiment can be seen in Figures 4a and 4b.

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Figure 4 shows the new cutting device 1 as viewed in Figure 3, namely in a sectional view, the cut being a cross-section from the side wall 24 to the side wall 22 and passing transversely through the pressing unit 3 near the knife-side wall 25. The movable knife 5 is positioned in the upper, rest position and is guided on the plate 40. The connecting part 57 provided on the bearing-side end 56 lies almost against the side wall 24.

When the movable knife 5 moves upwards, the push rods belonging to the pressing unit 3 are pushed in the direction of the side wall 22 by means of the connecting part 57 and the leg 58 - not visible in this cutting plane - together with the bolt 59. Through recesses with inclined transition surfaces worked into the body of the push rod 11 from above, connecting bolts 30a and 30b loaded with spring force, which engage the shaped part 30 of the pressing unit 3, and thus the shaped part 30 itself, are pushed upwards away from the support surface 21, so that a gap is formed between the lower surface of the shaped part 30 and the support surface 21, into which the material to be cut can be guided and beyond the cutting edge area of the cutting device 1.

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The connecting bolts 30a and 30b are each mounted and guided in a guide block 8 and 10 respectively. The push rod 11 is also guided and mounted in these guide blocks 9 and 10.

Figures 4a and 4b show enlarged sections of the illustration shown in Figure 4. Figure 4a shows the left area and Figure 4b shows the right area.

Figure 4a shows the movable knife 5 in the upper position. The connecting part 57 arranged on the end 56 of its receiving part 50 together with the leg 58 is in the "pressing unit released" position.
The molded part 30 of the pressing unit 3 has a lower horizontal surface, the pressing surface 31, an upstanding vertical surface, the protective surface 32, and a substantially horizontal surface extending from the latter 32, the bearing surface 33. On the bearing surface 33, which can also be called a fastening surface, sits a part of a hinge while the other part of the same hinge is connected to the upright plate 40 of the protective unit 4.

The vertically movable mold part 30, in particular the contact surface 31, is fixed on this side of the cutting device 1 by means of a

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and connected to the actuating device of the pressing unit 3 by a bearing pin 30a fastened to the same 31.
The bearing pin 30a is with its middle and the other end area in a

Guide sleeve 91 of the guide block 9 and held under spring pressure 93. The guide sleeve 91 is open downwards towards the push rod 11 so that the relevant end region of the connecting bolt 30a can come into contact with the upper surface of the push rod 11 and rests against it.

The guide block 9 is arranged on the inside of the support surface 21, i.e. in the base body 2. In order to position and adjust this guide block 9 and the molded part 30 including the contact surface 31 and the push rod 11 relative to the effective area of the cutting device, i.e. the cutting edge, i.e. the fixed knife 6, a centering pin 90 in the form of a guide ring is arranged on the top of the guide sleeve 91 of the guide block 9. This centering pin 90 engages in a recess machined in the support surface 21 in a form-fitting manner and is thus adjusted in position to the relevant edge. In addition to the form-fitting, the guide block 9 is attached to the inside of the housing part 21 and/or the knife-side wall 25 in a force-fitting manner by screwing, gluing or welding.

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For precise, user-friendly and maintenance-friendly guidance, guide surfaces 92 and 92' are provided in the guide block 9, in the area of its lower surface, which are spaced apart from one another and arranged in the same plane.
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The push rod 11 can be moved linearly in the directions shown by arrows "BK" and "BL". During the movement, the depression 110, which is set into a section of the push rod 11 near the end and has slanted transition areas, is moved along under the end area of the connecting bolt 30a. Since the connecting bolt 30a is pre-tensioned with spring force, this connecting bolt 30a is lowered when the push rods move to the left. This inevitably also lowers the contact surface 31 of the molded part 30, which is fixed at the other end of the connecting bolt 30a, whereby the cutting material placed on the support surface 21 and guided under the contact surface 31 is pressed against it. Since the movement in the direction of arrow BK, i.e. clamping, takes place by actuation, i.e. downward movement of the movable knife, because the leg 58 together with the bolt 59 of the connecting part 57 move to the left and thus also the end region 112 of the push rod 11 provided with a recess, preferably an elongated hole, in which the bolt 9 engages, is moved.

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In Figure 4b, the right-hand area of the illustration shown in Figure 4 is shown enlarged. The guide block 10 provided in this area is constructed essentially in the same way as the guide block 9, essentially a mirror image.

In this guide block 10, a guide sleeve is also provided which is similar to the guide sleeve 91 of the guide block 9 arranged on the other side and is designated here with 101. The connecting bolt 30b is guided in this guide sleeve 101, which also passes through the contact surface 31 on the other end of the molded part 30 and is also fixed to the molded part 30 by a counter element 30b'.
As with the guide sleeve 91 already described, a centering pin 100 is also provided on the guide sleeve 101, which is also ring-shaped and engages in a form-fitting manner in a recess provided in the support surface 21.
The near-end and end region of the push rod 11 are guided on guide surfaces 102 and 102' of the guide block 10. The end region of the push rod 11 is provided with a run-up slope 111 which slopes down from above to the outer edge.
When the push rod 11 is moved in the direction of the arrow "BK", the contact surface 31 also lowers on this side.

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Movement of the push rod 11 in the opposite direction, i.e. in the direction of the arrow "BL", the end areas of the bolts 30a and 30b run onto the slopes 111 and 110 and are pressed upwards in the direction of the support surface 21, whereby simultaneously and evenly the

Connecting bolts 30a and 30b and together with them the contact surface 31 of the molded part 30 are moved upwards, i.e. away from the support surface 21.

In both figures 4a and 4b it is also indicated that the bottom surface 29 of the base body 2 does not have to be formed over the entire surface. It is quite sufficient if the bottom surface 29 is formed by appropriately dimensioned bends of the side walls 22, 24, 24 and 25 in order to achieve sufficient shape and connection rigidity in the base body 2. In the two figures mentioned it is also indicated that a guide unit 8 is provided on, on or in the bottom surface 29, in which an additional stop 7 is guided, in particular with its guide part 70. In particular, according to figure 4b the guide part 70 of the additional stop 7 is held on the right-hand side in the fixed guide parts 81. In this illustration it can also be seen that the nose 44 provided on the handle side on the plate 40 of the protective unit 4 is in a recess on the molded part 30 directed inwards from the edge of the body.

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not further designated recess.

The representations in Figures 5a and 5b are analogous to the representations in Figures 4a and 4b, but the plane of the guided cross-section in these Figures 5a and 5b is shifted further in the direction of the front wall 23, so that the guide blocks 9 and 10 are shown in a non-cut state. Otherwise, the parts and assemblies of the cutting device 1 shown are numbered with the same reference numerals, so that a repeated description can be dispensed with.
From both Figures 5a and 5b it is also clear that in the case of the molded part 30, the lower leg directed away from the cutting edge, the contact surface 31, is angled upwards in its front edge area, i.e. away from the support surface 21. This makes it easier to insert the cutting material under the contact surface 31, especially if the available height of the gap between the contact surface 31 and the support surface 21 is to be fully utilized.

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Furthermore, it can be seen from these two figures that the edge region of the upper leg of the C-shaped molded part 30 is also angled downwards, essentially parallel to the vertically aligned protective surface 32 of the molded part 30. As a result,

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This ensures that the bearing/mounting surface 33 for the attachment of the hinges 41 and 42 is more stable.

Figure 5b also shows the guide unit 8 arranged in the base area 29 of the base body 2 with its base plate 80, the fixed guide parts 81 and the long side 80c. The guide part 70 of the additional stop 7 is shown inserted into the L-shaped tab 81a of the fixed guide parts 81. Finally, the stop part 71 of the additional stop 7, which is located behind the cutting edge, is shown between the support surface 21 and the raised contact surface 31.

Additional stop 7 can be seen.

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Figures 6a and 6b show sections of the cutting device 1, with the movable blade 5 shown in its lower position, i.e. the "cut" working position. In Figure 6a, the view goes from the front wall 23 in the direction of the molded part 30 of the pressing unit 3. The plate 40 of the protective unit 4 is lowered in the direction of the support surface 21 by pivoting in the hinges 41 and 42. Figure 6b shows the state of the cutting device 1 according to Figure 6a in a top view.

The folded plate 44 at least partially covers the

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Support surface 21 together with side stop 26. The circles visible in the plate 40 at the top right are known connecting elements, not further designated, for fastening a part of the hinge 41 to the plate 40. The bearing surface 33 of the molded part 30, to which the hinge 41 is also fastened, can be seen as a narrow strip. The nose-shaped projection 44 of the plate 40 provided on the handle side projects at least partially over the knife 51 and the receiving part 50 of the movable knife 5. If, contrary to the

Operating instructions and working instructions for

If the movable knife 5 were to be raised in the cutting device 1, the web 55 of the movable knife 5 would at the latest hit the nose 44 of the plate 40, which limits the upward movement in the position shown. The distances between the parts, which are not further designated here, are kept such that when the web 55 hits the nose 44, the cutting gap that can be created between the knife 51 of the movable knife 5 and the fixed knife 6 is not yet open, thus eliminating the risk of injury from the cutting edges. Only when the plate 40 is returned to its working position, i.e. into the vertical position, is it possible for the movable knife 5 to move towards its uppermost position. The cutting gap between the two knives 51 and 6 is formed by the protective surface 32 of the molded part 30 of the pressing unit 3 and

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that of the plate 40 placed thereon. Since these design measures also prevent reaching through the open cutting gap, an effective protective unit 4 is formed.

Figures 7, 8a and 8b show the additional stop 7 itself and the guide unit for this part 7 in detail. The additional stop 7 consists of a guide part 70 which is horizontally aligned in the functional position and a stop part 71 which is connected to it on one side and extends essentially at a right angle. On this stop part 71, tabs 72 and 73 are bent over in the side areas so that they protrude and are oriented horizontally parallel to the guide part 70. One leg 74 or 75 is arranged on each of these tabs so that it can pivot. If the stop part 71 is very far away from the knife-side wall 35, the free space created opposite the support surface 21 can be bridged by pivoting the legs 74 and 75, so that even relatively wide paper projections over the cutting edge are well supported, so that the plane of the support surface 21 is also essentially maintained on the other side of the cutting edge, i.e. on the knife side. The guide unit 8 is arranged on or in the bottom surface 29 of the base body 2 and is designed in such a way that the

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Additional stop 7 can be arranged both from the knife-side wall 25 and from the front wall 23 on the base body 2 - the cutting table.
For example, in Figure 6b, the additional stop 7 is arranged on the base body 2 from the knife-side wall 25. The legs 74 and 75 are pivoted in this position because the distance between the cutting edge and the stop part 71 is small.

Figures 8a and 8b show details of the guide unit 8, whose fixed guide parts 81 are aligned at right angles to the fixed blade 6. To facilitate the adjustment of the base plate 80 of the guide unit 8 relative to the cutting edge defined by the fixed blade 6 - the reference edge - form-fitting parts and form-fitting recesses are provided in or on the base plate 80 and corresponding to this in parts of the base surface 29 of the cutting device 1. After the form-fitting connection has been established, the base plate 80 is also connected in a force-fitting manner to parts of the base surface 29, for example by screwing, gluing or welding.

Following are details of the guide unit 8. It (8) has a base plate 80, with a narrow side 80a and an opposite narrow side 80b as well as a

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Longitudinal side 80c and an opposite longitudinal side 80d, wherein fixed guide parts 81 are arranged in the region of the longitudinal side 80c and movable guide parts 82 are arranged in the region of the longitudinal side 80d. At least two L-shaped tabs 81a and 81b are provided as fixed guide parts 81, which are arranged one behind the other in the direction of insertion of the stop 7.
In the embodiment shown here, the movable guide parts 82 are two pivotable legs 83 and 84, which are each pivotably mounted about a pivot bearing 83a or 84a in the direction of the longitudinal sides 8c or 8d and each have a guide tab 83b or 84b in an area close to the pivot bearings, the latter 83b, 84b preferably being L-shaped.

In a special new design, the pivotable legs 83 and 84 are each provided with a

Equipped with gear teeth 85 and 86, which mesh with each other.

Furthermore, a web 83c or 84c is provided at each of these end regions, which are arranged at least partially overlapping with their free ends, wherein a rod 87 mounted in the opposite longitudinal side 80c, which is movable in the direction of the double arrow 87', is also attached to these webs 83c and 84c.

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Furthermore, a force accumulator 89 is arranged on the rod 87, which is supported on one of the long sides, in particular the long side 80c.

The two extreme positions of the pivoting legs 83 and 84 are marked with the reference numbers "P1" and "P2". In the illustration in Figure 8a, the rod 87 is pushed in the direction of the opposite long side 80d by actuating the button 88. The pivoting legs 83 and 84 are in the "clamping released" position, i.e. in position P1. The guide part 70 of the additional stop 7 can be pushed into the L-shaped tabs 81a, 81b and 83b and 84b without resistance. After reaching the target position of the stop part 71 of the additional stop 7 (not shown here), the button 88 is released by the operator. Due to the force of the spring 89 on the rod 87, the pivoting legs 83 and 84, together with the guide tab 83b or 84b arranged on them, are moved in the opposite direction, i.e. towards the long side 80c.

moved. Through the interlocking

The movement on both guide plates 83b and 84b occurs simultaneously and evenly thanks to the gear teeth 85 and 86. This ensures that the stop part 71, on which the material to be cut can be placed, is aligned at right angles to the cutting edge, the fixed blade 6, since the guide part 70

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by the guide tabs 83b and 84b against the fixed guide parts 81, which are also aligned with respect to the cutting edge of the fixed knives 6, in particular against the tabs 81a and 81b of the guide 8.

All features mentioned in the above description as well as those that can be inferred from the drawings alone are further components of the invention even if they are not specifically highlighted and mentioned in the claims.

The invention is not limited to the embodiment described but is variable in many ways within the scope of the disclosure

15

All of the new measures mentioned and disclosed in the application documents for a cutting device for paper and similar materials not only improve the cutting result and simplify handling, but also reduce the manufacturing effort for such a device compared to known cutting devices.

3-390 G Sw
2003-08-12

PAe HANSMANN & VOGESER, Göppingen

Reference list:

20 25

1 20 Cutting device (lever cutter) 2 21 Base body (cutting table) 22 Feet 23 Support surface 24 Side wall 25 front wall 26 Side wall 26a knife-side wall 27 Side stop 28 cone 29 Ruler (movable and lockable) Swivel bearing 30 Floor area 3 30a, 30b Contact pressure unit 30a', 30b' molded part 31 Connecting bolt 32 Fasteners 33 Contact surface Protective area 40 storage area 4 Protection unit plate

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2003-08-12

PAe HANSMANN & VOGESER, Göppingen

5 41 hinge 42 hinge 43 attack 44 Nose 5 movable knife 50 Recording part 51 Knife 52 Fasteners 53 Bearing shaft 10 54 Handle 55 web 6 56 bearing end 7 57 Connecting part 58 Legs of Pos. 57 15 59 bolt fixed knife Additional stop 70 Guide part 71 Stop part 20 8th 72 Tabs 73 Tabs 74 leg 75 leg Guide unit 25 80 Base plate

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PAe HANSMANN & VOGESER, .···

Goeppingen .. ·· " ··

- 32 -

20 25

80a 9 90 Narrow side 80b 91 Narrow side 80c Long side 8Od Long side 81 fixed guide parts 81a Tabs (L-shaped) 81b Tabs (L-shaped) 82 moving guide parts 83 pivoting leg 83a Swivel bearing 83b Guide tab 83c web 84 pivoting leg 84a Swivel bearing 84b Guide tab 84c web 85 Gearing 86 Gearing 87 Rod 87' Double arrow (movement directions from item 87) 88 Button 89 Energy storage (spring) Guide block Centering pin Guide sleeve

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2003-08-12

PAe HANSMANN & VOGESER, Göppingen

10

- 33 -

92, 92' 10 100 11 110 Guide surfaces 93 101 111 Compression spring 102, 102' 112 Guide block 103 113 Centering pin 104 Guide sleeve Guide surfaces Compression spring attack Push rod Lowering (with sloping transition areas) Ramp End area free end area

15 P1 Position of legs 83 and 84 in the

the clamping of Pos. 7 is released P2 Position of legs 83 and 84 in the

Pos. 7 is clamped

BK Movement direction "clamping" from position

20 BL Direction of movement "Release" from position

3-390 G Sw 2003-08-12

Claims (30)

1. Cutting device, in particular a lever cutting device, with - a one- or multi-part base body ( 2 ), - at least one side stop ( 26 ), - knives ( 5 and 6 ), at least one of which is movably mounted, - at least one pressing unit ( 3 ) and - at least one protection unit ( 4 ), characterized in that
at least one component of the protective unit ( 4 ), in particular a plate ( 40 ), is arranged so as to be foldable, preferably in the direction of the support surface ( 21 ) for the material to be cut, preferably on the pressing unit ( 3 ). 2. Cutting device according to claim 1, characterized in that the plate ( 40 ) has a bend ( 43 ) on its upper edge in the unfolded position, which ( 43 ) is an upper stop for the movable knife ( 5 ). 3. Cutting device according to claim 1 or 2, characterized in that hinges ( 41 and 42 ) are arranged on the plate ( 40 ), the latter ( 41 and 42 ) being fastened to the pressing unit ( 3 ), preferably to a molded part ( 30 ) of the latter ( 3 ). 4. Cutting device according to claim 3, characterized in that the hinges ( 41 , 42 ) each have a locking mechanism with at least two locking positions. 5. Cutting device according to claim 3 or 4, characterized in that the hinges ( 41 , 42 ) consist of plastic, preferably of a plastic with good sliding properties. 6. Cutting device according to one of claims 1 to 5, characterized in that a nose ( 44 ) is formed on the plate ( 40 ), which, on the handle side of the pressing unit ( 3 ), projects in the upright position into a recess of the latter ( 3 ) and, when the plate ( 40 ) is folded over, projects beyond the blade-side side surface of the pressing unit ( 3 ) or beyond the imaginary cutting line of the blades ( 5 , 6 ). 7. Cutting device, in particular a lever cutting device, with - a one- or multi-part base body ( 2 ), - at least one side stop ( 26 ), - knives ( 5 and 6 ), at least one of which is movably mounted, - at least one pressing unit ( 3 ) and - at least one protection unit ( 4 ), characterized in that
the pressing unit ( 3 ) consists of a molded part ( 30 ) provided above the support surface ( 21 ) of the base body ( 2 ) and a push rod ( 11 ) which is connected to the pivotable receiving part ( 50 ) of the movable knife ( 5 ) by means of connecting parts ( 57 , 58 , 59 ), which is arranged within the base body ( 2 ) in an area close to the molded part ( 30 ) and is mounted and guided there in at least one guide, and the molded part ( 30 ) is operatively connected to the push rod ( 11 ) by means of at least two guided, movable connecting bolts ( 30a , 30b ). 8. Cutting device according to claim 7, characterized in that the guide for the push rod ( 11 ) consists of two guide blocks ( 9 and 10 ) arranged at a distance from one another and in alignment with one another, in which ( 9 , 10 ) the push rod ( 11 ) is guided, preferably at its end regions. 9. Cutting device according to claim 7 or 8, characterized in that the connecting bolts ( 30 a, 30 b) are each guided with their one side in one of the guide blocks ( 9 or 10 ) and with their other end, which each project upwards through an opening in the support surface ( 21 ), are each connected to a section of the molded part ( 30 ). 10. Cutting device according to claim 3, 7, 8 or 9, characterized in that the molded part ( 30 ), seen in cross section, is C-shaped and is arranged with its upstanding, vertical leg ( 32 ) flush with the knife-side wall ( 25 ) of the base body ( 2 ) on the support surface ( 21 ), wherein the lower, substantially horizontal leg simultaneously forms a contact surface ( 31 ). 11. Cutting device according to claim 10, characterized in that the edge region of the pressing surface ( 31 ) facing away from the fixed knife ( 6 ) is angled upwards with respect to the support surface ( 21 ). 12. Cutting device according to claim 3, 7, 8, 9 or 10, characterized in that the vertically aligned surface of the molded part ( 30 ) is at the same time a protective surface ( 32 ). 13. Cutting device according to one of claims 3, 9, 10, 11 or 12, characterized in that the upper, substantially horizontal leg of the molded part ( 30 ) is a bearing surface ( 33 ) for the hinges ( 41 , 42 ) arranged on the plate ( 40 ). 14. Cutting device according to claim 10, 11, 12 or 13, characterized in that the substantially vertically aligned protective surface ( 32 ) of the molded part ( 30 ) has, in its end region on the handle side, a recess machined from above into which the projecting nose ( 44 ) provided on the plate ( 40 ) extends. 15. Cutting device according to claim 10, 11, 12, 13 or 14, characterized in that the upper leg of the C-shaped molded part ( 30 ), i.e. the bearing surface ( 33 ), has a downwardly directed bend in its free edge region. 16. Cutting device according to claim 7, characterized in that
the push rod ( 11 ) has a recess in its pivot bearing-side end region ( 112 ) into which a bolt ( 59 ) fastened in a leg ( 58 ) operatively engages,
that in the region near the end of the pivot bearing-side end region ( 112 ) there is provided a depression ( 110 ) which is machined from the upper surface downwards and has oblique transition regions, and
that at the opposite free end region ( 113 ) a run-up slope ( 111 ) is provided which slopes down towards the end of the push rod ( 11 ). 17. Cutting device according to claim 8, characterized in that the guide blocks ( 9 and 10 ) are constructed essentially identically, wherein, viewed in the installed position, a guide sleeve ( 91 or 101 ) is provided in the upper region thereof, in which the respective connecting bolt ( 30 a or 30 b) is guided together with a compression spring ( 93 or 103 ) which surrounds the latter ( 30 a, 30 b) in a partial section. 18. Cutting device according to claim 17, characterized in that the guide sleeves ( 91 or 101 ) each have a centering pin, a ring, arranged concentrically with respect to their bolt guide, which is each inserted, preferably in a form-fitting manner, into an opening not further designated in the support surface ( 21 ). 19. Cutting device according to claim 17 or 18, characterized in that the guide blocks ( 9 and 10 ) consist of a fiber-reinforced material, e.g. a glass fiber material or a carbon fiber material or a fiber-reinforced plastic. 20. Cutting device according to claim 8, 9, 17, 18 or 19, characterized in that the guide block ( 10 ) arranged on the handle side in the base body ( 2 ) has a stop ( 104 ) which projects outwards through a recess in the knife-side wall ( 25 ) of the base body ( 2 ), as a lower stop for limiting the range of movement of the movable knife ( 5 ). 21. Cutting device, in particular a lever cutting device, with - a one- or multi-part base body ( 2 ), - at least one side stop ( 26 ), - knives ( 5 and 6 ), at least one of which is movably mounted, - at least one pressing unit ( 3 ) and - at least one protection unit ( 4 ), characterized in that
on or in the bottom surface ( 29 ) of the base body ( 2 ) there is provided a guide unit ( 8 ) whose direction of movement is aligned at right angles to the knife-side wall ( 25 ) of the base body ( 2 ) or the cutting edge, in which an additional stop ( 7 ) can be guided. 22. Cutting device according to claim 21, characterized in that the additional stop ( 7 ) can be inserted into the guide unit ( 8 ) from the knife-side wall ( 25 ) or from the opposite front wall ( 23 ) of the base body ( 2 ). 23. Cutting device according to claim 21 or 22, characterized in that the guide unit ( 8 ) has a base plate ( 80 ) with a narrow side ( 80a ) and an opposite narrow side ( 80b ) as well as a long side ( 80c ) and an opposite long side ( 80d ), wherein fixed guide parts ( 81) are arranged in the region of the long side (80c ) and movable guide parts ( 82 ) are arranged in the region of the long side ( 80d ). 24. Cutting device according to claim 23, characterized in that the fixed guide parts ( 81 ) are at least two L-shaped tabs ( 81 a and 81 b) which are arranged one behind the other in alignment in the insertion direction of the stop ( 7 ). 25. Cutting device according to claim 23, characterized in that the movable guide parts ( 82 ) are two pivotable legs ( 83 and 84 ), which are each pivotably mounted about a pivot bearing ( 83 a or 84 a) in the direction of the longitudinal sides ( 8 c or 8 d) and each have a guide tab ( 83 b or 84 b) in an area close to the pivot bearings, the latter ( 83 b, 84 b) preferably being L-shaped. 26. Cutting device according to claim 25, characterized in that
the pivotable legs ( 83 and 84 ) each have a toothing ( 85 or 86 ) at their end region facing away from the pivot bearing (83a or 84a) which engage with one another, and that a web ( 83 c or 84 c) is provided at each of these end regions, which are arranged at least partially overlapping with their free ends,
and that a rod ( 87 ) mounted in the opposite longitudinal side ( 80c ) which is movable in the direction of the double arrow ( 87 ') acts on these webs ( 83c and 84c ). 27. Cutting device according to claim 26, characterized in that a force accumulator ( 89 ) is arranged on the rod ( 87 ), which is supported on one of the longitudinal sides, in particular the longitudinal side ( 80 c). 28. Cutting device according to at least one of claims 1 to 27, characterized in that on the support surface ( 21 ), associated with the handle-side side wall ( 22 ), a side stop ( 26 ) is provided, which is arranged at right angles to the cutting edge determined by the position of the fixed knife ( 6 ). 29. Cutting device according to claim 28, characterized in that a ruler ( 27 ) is arranged on or on the side stop ( 26 ) so as to be displaceable and lockable. 30. Cutting device according to claim 28, characterized in that the left side wall of the side stop ( 26 ) facing the support surface ( 21 ) is designed in sections by pins or projections ( 26a ) in a prong-like manner and deeper than its opposite side wall and these projections/pins ( 26a ) protrude in a form-fitting manner through corresponding recesses provided in the support surface ( 21 ).