DE7837447U1 - CUTTING DEVICE, IN PARTICULAR FOR FILM AND PLASTIC PANELS - Google Patents

Description

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Martor-Argentax j. "." J. * '.' . "* /

EH Beermann KG >'··'·>' *: ..: ..: ".. *

Description :

The invention relates to a cutting device, in particular for foils and plates made of plastic, with a handle part, a sliding sole connected to it via a web, one held in a receiving space in the handle part Knife blade, the cutting edge of which extends across the free space between the handle part and the sliding sole, and with a hold-down device arranged on the handle part in front of the cutting edge in the cutting direction.

A well-known cutting device of this type (according to SW-PS 154,957) has a resilient, On the handle part molded tongue, the free end in the unloaded state on the upper edge of the sliding sole is applied. Half of its width of the free end of the hold-down protrudes from one side of the knife blade while its other half is notched and entirely on the other side of the knife blade is missing.

This cutting device is despite the unfavorable guidance of the material to be cut between the

Martor-Argentax
EH Beermann KG

Upper edge of the sliding sole and the lower edge of the handle part for very thin and homogeneous foils or plates made of plastic, but never for thicker materials of this type. For thicker foils or ,. Plates, especially those made of inhomogeneous, for Leaves behind materials that tend to crumble, such as polystyrene

* the hold-down on the surface of the cut

- Substantial unmistakable impressions and conditionally a relative

severe additional crumbling near the cut edge of the material in question. In addition, this Do not repair the cutter if the hold-down device breaks.

Proceeding from this prior art, the invention is based on the object while avoiding the aforementioned Disadvantages of a cutting device of the type mentioned above

_t : "A genre that is used to cut foils

and plates of various thicknesses as well as I.

universal for inhomogeneous substances that tend to crumble

> Fulfills its purpose and always does JE clean, deformation-free cut edge area of the cut Materials guaranteed.

According to the invention, this object is achieved by that the hold-down device can be adjusted in height over the entire free space between the handle part and the sliding sole and in the

Martor-Argentax
EH Beermann KG

respective altitude is lockable. Through this arrangement the hold-down device is stepless or step-by-step to the respective thickness of the material to be cut individually adjustable, which means that even with thick, even with inhomogeneous plastics, such as polystyrene with its gas insoles, an exact and distortion-free incision is ensured.

Point to a precise, blur-free guidance the hold-down device has a guide shoe that is positively guided in the handle part and a slide that can be operated from the outside on. The guide shoe has an essentially T-shaped cross-section and engages slidingly behind a correspondingly contoured recess in the handle part that runs parallel to the cutting edge of the knife blade. As a result, a constant guide length of the material to be cut is achieved in every height position of the hold-down device achieved before it comes into contact with the cutting edge.

The intended use of the new cutting device is in particular also due to the easy assembly and, if necessary easy repair of its hold-down increases, which is not possible with the previously known cutting device. This is done in that the guide shoe and the slide consist of two parts, which are detachable Connection are interconnected. The

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detachable connection formed by two resilient locking hooks of one part and two locking openings that cooperate therewith ides the other part. In order to tip-tz your detachable connection even when the i

stress during a cutting process no relative j movement of one part of the hold-down device to. each j

to allow other part, and thus always an exact 3 To ensure parallel guidance are in a part |

of the hold-down male-shaped alignment projections provided, which fit snugly into the die-shaped recesses of the other part.

According to a particularly advantageous embodiment of the invention are the locking hooks and the male-shaped Alignment projections in the side of the slide facing the handle part and the locking openings and the matrix-shaped recesses are arranged in the guide shoe.

The slide is advantageously provided with an angular shape, one of the legs of an end face of the Handle part is guided and the other, free legs are approximately parallel to the sliding surface of the sliding sole extends. Because the free leg of the

Mar tor-Argent ax
EH Beermann KG

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Slider roughly near the cutting edge of the knife blade ends and is forked there, it has a certain elasticity, which allows it to be used on uneven surfaces of the material to be cut can spring back without affecting its guidance and without deformation to leave behind. Furthermore, the fact that the free leg of the slide is approximately in the vicinity of the cutting edge the knife blade ends, ensuring that even with inhomogeneous cut materials that tend to crumble, such as E.g.! - si polystyrene, there are no crumbled particles wedge between the surface of the material to be cut and the free leg of the slide of the hold-down device can. Otherwise it could be on the surface of the cut material in the area of its Cut edge, scratch marks, grooves or the like appear, which the invention also aims to avoid has set.

A locking device that has proven itself in long-term use the hold-down device at the desired altitude is created in that the guided Leg of his slider has a locking edge and the facing face of the handle part has several locking grooves own. The locking edge at the free end of a substantially U-shaped notched one is therefore advantageous

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E. H. Beermann KG

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Arranged edge area of the slide, whereas the locking hooks and the alignment jumps about ■ in the vicinity of the axis of symmetry of a tongue-like central area of the slide are attached. With this arrangement, on the one hand, the U-shape can be clipped out Edge area of the slide with its locking edge located at the free end for height adjustment from the respective Bend back the locking groove, overcoming the elasticity forces impressed on it, while after the height adjustment under these elasticity forces again automatically in the new locking groove belonging to the relevant height engages resiliently. At the same time, the locking hooks remain or alignment projections with the locking openings or the die-shaped recesses in the Guide shoe in immovable engagement, creating a blur-free Height adjustment of the free leg of the slide is ensured.

To achieve an exact cutting edge retention of the Even with high cutting forces, the knife blade has one side in a recess except for its cutting edge area a side cheek of the connecting web is used and lies with its end face facing the sliding sole at a stop edge of this recess.

Martor-Argentax E, H. Beermann KG

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The lower edge of the handle and the upper edge of the
The sliding soles run advantageously on both sides of the
Parallel web.

An embodiment of the invention is shown in i

Drawing shown. It shows: '

Fig. 1 is a side view of the new cutting device,

Fig, 2 is a plan view of the slide of the

Hold-down,

3 shows a plan view of the guide shoe of the hold-down device, f

Fig. 4 is a sectional view along the line IV / IV of ^

Fig. 2, and I.

Fig. 5 is a sectional view along the line V / V of k Flg. 3. ■ - 'I.

The new cutting device 10 consists essentially of
the handle part 11, which is connected to it via the web 12
Sliding sole 13, which is in the receiving space 14 in the handle part 11

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held knife blade 15 whose cutting edge 16 extends across the free space 17 between the handle part 11 and Sliding sole 13 extends, and from which in the cutting direction of the Arrow 18 in front of the cutting edge 16 on the handle 11 arranged hold-down device 19.

The hold-down device 19 is made up of two parts, namely the guide shoe 20 and that which can be actuated from the outside Formed slide 21, which are connected to one another by a releasable connection. This releasable connection is in turn supported by two resilient locking hooks 22 of one part and two cooperating locking openings 23 of the other part formed.

In addition, male-shaped alignment projections 24 are provided in a part of the hold-down device, which engage properly in the die-shaped recesses 25 of the other part. In the present case, the locking hooks are 22 and the male-shaped alignment projections 24 in the side facing the handle part 11 of the slide 21 and the locking openings 23 and the die-shaped recesses 25 in the guide shoe arranged. The guide shoe 20 has an essentially T-shaped cross-section and engages in a slidable manner from behind a correspondingly contoured as well as parallel

Martor-Argentax
Ü. H. Beermann KG

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to the cutting edge 16 of the knife blade 15 running recess 27 in the handle part 11. In this way, the sliding shoe 20 with the two sliding strips 28 low-friction in the Recess 27 slidable over slide 21.

As can be seen most clearly from Figures 1 and 4, the slide 21 has an angular shape, one leg 29 of which is guided on the end face 30 of the handle part 11, while the other leg extends approximately parallel to the sliding surface 32 of the sliding sole 13.

The guided leg 29 of the slide 21 is provided with a locking edge 33 and the end face 30 of the handle part 11 facing it is provided with a plurality of locking grooves 34.

As can be seen in particular from FIGS. 2 and 4, the locking edges 33 are essentially at the free end of a U-shaped notched edge area 35 of the slide 21 is arranged, whereas the locking hooks 22 and the alignment projections 24 approximately in the vicinity of the axis of symmetry 36 of a tongue-like central region 37 of the slide 21 are located. In this way, the tongue-like central region 37 of the slide 21 is on the one hand over the hooks 22 and the aligning projections 24 on the other hand immovable,

Martor-Argentax E. H. Beermann KG

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but releasably engaged with the guide shoe 20, whereas the U-shaped notched edge area 35 of the slide 21 with the locking edge 33 can be pivoted in the direction of the arrow 38 in FIG. 1 against its impressed elasticity forces from the locking grooves 34. This creates a hold-down device 19 which is adjustable in height over the entire free space 17 between the handle part 11 and the sliding sole 13, that is to say over the entire height of the web 12, and can be locked in the desired height position.

As can be seen in particular from FIG. 1 in connection with FIGS. 2 and 4, the free leg ends of the slide 21 approximately in the vicinity of the cutting edge 16 and is forked into two tongues 39 there. This arrangement offers the particular advantage that on uneven surfaces of the material to be cut this under the elastic tongues 39 of the leg 31 of the hold-down 19 can slide away without leaving undesired surface deformations of the cut material. It is In particular with cut materials that tend to crumble, e.g. inhomogeneous polystyrene sheets, it is essential that the tongue-like ends 39 of the free leg 31 of the slide 21 in the vicinity of the cutting edge 16 of the knife blade 15 ends. Because this will crumbled and as a result of the pulling cut of the knife blade 15 on the

Martor-Argentax
E. H "Beermann KG

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Surface of the cut material not reaching particles between the free leg 31 of the hold-down 19 and the surface of the cut material concerned on the one hand and the knife blade 15 on the other hand jammed, as this would otherwise lead to increased frictional forces and thus to Deformations leads.

The lower edge 40 of the handle part 11 and the upper edge of the sliding sole 13 run on both sides of the web parallel, so that the film or sheet to be cut remains in the same position during the cutting process and is not exposed to any distortion stress.

The knife blade 15 is located approximately in the middle of the web 12. This is achieved in a simple arrangement in that they are down to their cutting edge area is inserted with one side in a recess 43 of a side wall of the connecting piece 12 and with its the The end edge 45 facing the sliding sole 13 rests against a stop edge 46 of this recess 43. Furthermore, the Knife blade 15 with its lower edge 47 into a recess 48 in the sliding sole 13. That way you get connected with the clamp J forcibly guided in the handle part 11 Slide 49 achieved an overall extremely rigid clamping of the knife blade 15. This in turn leads even to a great deal

Martor-Argentax //.

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hard materials made of plastic to an optimal edge retention of the knife blade 15 and thus to excellent Cuts.

It goes without saying that modifications are also possible within the scope of the invention. For example, the step-by-step height adjustment and lockability of the hold-down device 19, which in the case shown is effected by the locking edge 33 in conjunction with the locking grooves 34, can be achieved by a slide similar to the clamping slide 49, which acts directly on the guide shoe 20 and this; Recess 27 in the handle part 11 of the cutting device 10 is stuck. This would easily allow the hold-down device 19 to be continuously adjusted in height and locked.

Claims (13)

Martor-Argentax
EH Beefmann KG S c h u t ζ a η s ρ r ü c h e: - 1} Cutting device, especially for foils and sheets made of plastic, with a handle part, a sliding sole connected to it via a web, one in a receiving space in the Handle part held knife blade, the cutting edge of which extends across the free space between the handle part and the sliding sole extends, and with a hold-down device arranged in front of the cutting edge aiu handle part, characterized in that the hold-down device (19) over the entire free space (17) between _q Handle part (11) and sliding sole (13) are height-adjustable and can be locked in the respective height position. 2. Cutting device according to claim 1, characterized in that the hold-down device (19) has a guide shoe (20) positively guided in the handle part (11) and a slide (21) which can be actuated from the outside. MartorrArgentax
EH Beermann KG 3. Cutting device according to claims 1 and 2, characterized in that the Guide shoe (20) and the slide (21) in two parts - exist, which by a detachable connection (22, 23) are connected to each other. 4. Cutting device according to claims 1 to 3, characterized 5 that the detachable Connection of two resilient locking hooks (22) of one part (e.g. 21) and two interacting with it Locking openings (23) of the other part (e.g. 20) is formed. 5. Cutting device according to claims 1 to 4, characterized in that in one Part (21) of the hold-down device (19) shaped like a male f. directional projections (24) are provided, which are is shaped recesses (25) of the other part (20) properly fitting % intervene. 6. Cutting device according to claims 1 to 5, d a - characterized by the fact that the locking hooks (22) and the male-shaped alignment tabs (24) in the side (26) facing the handle part (11) the slide (21) and the locking openings (23) and § the die-shaped recesses (25) in the guide shoe (20) are arranged. Martor-Argentax
EH Beermann KG 7. Cutting device according to claims 1 to 6, characterized in that the Guide shoe (20) has a substantially T-shaped cross section and has a correspondingly contoured recess that runs parallel to the cutting edge (16) of the knife blade (15) (27) in the handle part (11) slidably engages behind. 8. Cutting device according to claims 1 to 7, characterized in that the slide (21) is provided with an angular shape, one of the "legs (29) is guided on an end face (30) of the handle part (11) and its other, free leg (31) is approximately extends parallel to the sliding surface (32) of the sliding sole (13). 9. Cutting device according to claim 8, characterized | characterized in that the guided leg (29) of the slide (21) has a locking edge (33) and the end face (30) of the handle part (11) facing it has several locking grooves (34) own. 10. Cutting device according to claims 1 to 9, characterized in that the locking edge (33) at the free end of a substantially U-shaped notched edge region (35) of the slide (21) and the locking hook (22) and the alignment projections (24) approximately are arranged in the vicinity of the axis of symmetry (36) of a sung-like central region (37) of the slide (21). Mart or-Argentax E. H. Beermann KG 11. Cutting device according to claims 1 to 10, characterized in that the free legs (31) of the slide (21) ends approximately in the vicinity of the cutting edge (16) of the knife blade (15) and forked there is. 12. Cutting device according to one or more of claims 1 to 11, characterized in that the lower edge (40) of the handle part (11) and the upper edge (41) of the sliding sole (13) run parallel on both sides of the web (12). 13. Cutting device according to one or more of the - Claims 1 to 12, characterized in that (that the knife blade apart from its exposed cutting i edge area (42) with one side in a recess (43) § a side wall (44) of the connecting web (12) used and with its end edge (45) facing the sliding sole (13) on a stop edge (46) of this recess (43) is applied.