EP0116811B1 - Device for producing cardboard or corrugated paper patterns or templates - Google Patents

Description

The invention relates to a device for pattern or model making of cardboard, paper or corrugated cardboard, with a height and incline adjustable rectangular work table and a transverse to the longitudinal axis of the table, fixed to the table, on which a hand by hand over the usable width the table slide back and forth is arranged with a spring-loaded handle.

Such a device is intended for cardboard processors, case makers, pattern makers, graphic designers and other specialists in the field of pattern or model making from cardboard, paper or corrugated cardboard, who have to process the aforementioned materials on a daily basis. It is intended for small series - up to 50 pieces - of samples.

Cutting, creasing and scoring work has previously been done by punching by hand or carried out by three separate special machines. A device is also known on which the cutting, creasing and perforating work can be carried out by hand. This device contains several bars with cutting and creasing grooves which contain grooves of different widths depending on the cutting or creasing tool selected. In this device, the tools must always be replaced for different work, and the rods that are used under the table must always be replaced for different work.

The cutting, creasing and scoring operations to be carried out on the known devices are accordingly time-consuming and tedious.

FR-A-2 232 422 describes a device for grooving polypropylene films or other materials with similar mechanical properties. This device can manually or automatically create grooves of a uniform depth. The device has a work table on which the film is laid and a carriage running on rails with a creasing tool. The back and forth movement of the carriage creates grooves in the film using the creasing tool.

A disadvantage of this device is the fact that only one creasing tool is provided for making creases in a film, which means that only creasing work can be performed with this device. The cutting or scoring work must then be carried out on separate devices.

The invention specified in claim 1 has for its object to provide a device for pattern or model making, which makes it possible to make all of pattern or model from cardboard. Paper or corrugated cardboard required work to be carried out on a single device practically without loss of time, with high precision and effortlessly. All cuts, scoring and scoring should be made in repetitive or series work with the absolutely same dimensions and the same quality. Even materials from a poorer dzw. thicker quality should be able to be processed on the device. This object is achieved with a generic device by the features of the characterizing part of claim 1.

• Figur 1 eine perspektivische Ansicht der Vorrichtung mit einem am Ständer einstellbaren Arbeitstisch,
• Figur 1a einen Einschnitt eines Kartons mit einer mittels eines Ritzmessers gemachten Ritzung,
• Figur 1 b eine Rille in einem Karton von dicker oder schlechter Qualität, gemacht mittels Profilrollen ohne Verwendung von Unterlagenfolie,
• Figur 1c eine Rille in einem Karton dicker oder schlechter Qualität, gemacht mittels Profilrollen bei Verwendung von Unterlagefolie,
• Figur 1d eine Rille in einem Wellkarton, gemacht mittels einer speziellen Rillrolle,
• Figur 2 eine Ansicht eines an einem Träger hin- und herverschiebbaren Schlittens mit einem Schneid- und Rillwerkzeug,
• Figur 3 eine Seitenansicht von vorne des Schlittens nach der Fig. 2, teilweise im Schnitt,
• Figur 4 einem Schnitt des Schlittens und des Trägers entlang der Linie IV-IV der Fig. 2, jedoch ohne Rillwerkzeug,
• Figur 5 eine Draufsicht im Schnitt auf den Schlitten und den Träger entlang der Linie V-V der Fig. 2,
• Figur 6 eine Seitenansicht von vorn eines Ritzwerkzeuges,
• Figur 7 eine Ansicht des Ritzwerkzeuges nach der Fig. 6.
• Figur 8 eine Seitenansicht von vorn eines Rillwerkzeuges mit einer Rolle zur Markierung des Wellkartons,
• Figur 9 eine Ansicht im Schnitt von zwei Profilleisten mit einem Abstand zwischen denselben und einem über sie gelegten Wellkarton, der durch die Rillrolle nach der Fig. 8 markiert wird,
• Figur 10 eine perspektivische zersprengte Ansicht von Zahnrädern und zwei die Werkzeuge tragenden U-Trägern mit Verzahnung,
• Figur 11 eine Draufsicht im Schnitt auf die Profilleisten und Keilstücke zum Regulieren des Abstandes zwischen den Profilleisten,
• Figur 12 einen Teillängsschnitt der Klemmplatte zum Klemmen des zu bearbeitenden Kartons oder Papiers,
• Figur 13 eine Ansicht im Schnitt einer Vorratsrolle der Unterlagefolie,
• Figur 14 eine Draufsicht auf die Anlege- und Speichervorrichtung mit Programschiene, teilweise abgebrochen, und
• Figur 15 einen Schnitt entlang der Linie XV-XV der Fig. 1.

The invention is explained in more detail below with reference to the drawings, for example. Show it

• FIG. 1 shows a perspective view of the device with a work table adjustable on the stand,
• FIG. 1a shows an incision in a carton with a scoring made by means of a scoring knife,
• 1b shows a groove in a carton of thick or poor quality, made by means of profile rolls without the use of an underlay film,
• 1c shows a groove in a carton of thick or poor quality, made by means of profile rolls when using a base film,
• 1d a groove in a corrugated cardboard, made by means of a special creasing roller,
• FIG. 2 shows a view of a slide that can be pushed back and forth on a carrier with a cutting and creasing tool,
• FIG. 3 shows a side view from the front of the carriage according to FIG. 2, partly in section,
• FIG. 4 shows a section of the carriage and the carrier along the line IV-IV of FIG. 2, but without a creasing tool,
• 5 shows a plan view in section of the carriage and the carrier along the line VV of FIG. 2,
• FIG. 6 shows a side view from the front of a scribing tool,
• FIG. 7 shows a view of the scribing tool according to FIG. 6.
• FIG. 8 shows a side view from the front of a creasing tool with a roller for marking the corrugated cardboard,
• 9 shows a view in section of two profiled strips with a distance between them and a corrugated cardboard placed over them, which is marked by the creasing roller according to FIG. 8,
• FIG. 10 shows a perspective, exploded view of gear wheels and two U-carriers with teeth, which carry the tools,
• FIG. 11 shows a plan view in section of the profile strips and wedge pieces for regulating the distance between the profile strips,
• FIG. 12 shows a partial longitudinal section of the clamping plate for clamping the cardboard or paper to be processed,
• FIG. 13 shows a view in section of a supply roll of the base film,
• Figure 14 is a plan view of the mooring and Memory device with program rail, partially broken off, and
• FIG. 15 shows a section along the line XV-XV in FIG. 1.

The device shown in the figures is used to make samples from cardboard, paper or corrugated cardboard by means of this single device, the cardboard or the corrugated cardboard is cut, grooved or scored in repetitive or series work or the paper is cut or grooved continuously.

On a rectangular work table 1, which is arranged on a stand 9 adjustable in height and inclination, a support 2 extending transversely to the longitudinal axis of the work table 1 is fixed in place. A carriage 3 which can be pushed back and forth by hand over the useful width of the work table 1 is arranged on the carrier 2. The carriage 3 is provided with a spring-loaded, depressible handle 4 with a lever 91.

As can be seen from FIGS. 2, 5, one end of the lever 91 of the handle 4 is rotatably attached to a bolt 51 screwed into the carriage 3. A push button 27 is arranged on the handle 4, the push rod 52 of which can be pushed back and forth against the action of a compression spring 74 in the lever of the handle 4. The end part of the push rod 52 is formed by a block 53 running transversely to the longitudinal axis of the push rod 52. This block is optionally operatively connected to one of two gear wheels 33, 34, which are in engagement with the teeth 36 of two U-beams 28, 29 via a further pair of gear wheels 46. Depending on how deep the push rod 52 is pressed in, the block 53 engages once in the recess 54 of the gear 33 (FIG. 10), sliding on the flanks 57 of the other gear 34. When the push rod 52 is pushed in deeper, the block 53 engages in the recess 55 of the gearwheel 34, whereby it slides on the flanks 56 of the gearwheel 33. In this way, the gear 33 and the gear 34 are brought into operative connection with the handle 4, which can be pressed downwards, in order to carry out a partial rotary movement.

As can be seen particularly well from FIG. 10, the outer surfaces of the legs of the adjacent U-beams 28, 29 facing the pair of gearwheels 46 are toothed. The U-beam 28 carries a creasing tool 6 at its end facing the work table 1, whereas the U-beam 29 carries a cutting tool 5 on its end facing the work table 1 (FIG. 2).

As can be seen from FIGS. 2 and 3, the cutting tool 5 and the creasing tool 6 are held on the corresponding U-beams 29, 28 by means of fastening bolts 37 with fluted nuts 86. The cutting tool 5 contains a circular knife 15 which is loaded by a compression spring 38. The circular knife 15 is adjustable in height and held on the tool 5 in the desired position by means of a nut 50. The creasing tool 6 comprises three profile rollers 16 with the same profile, which are arranged one behind the other at different heights in steps of 0.1 mm on a sliding carriage 11 and are held in place by nuts 58. The scoring tool 6 with the three profile rollers 16 arranged one behind the other can be exchanged on the U-beam 28 and replaced by a scoring tool 7 with a scoring knife 17 or another scoring roller 18 (see FIGS. 6, 7 and 8).

One U-beam 28 can be pressed downward by actuating the handle 4 against the action of a coil spring 59 and the other U-beam 29 against the action of a coil spring 60. The stroke of the creasing tool 6 or the scoring tool 7 or the creasing roller 18 can be adjusted by means of a micrometer screw 23 which is operatively connected to the U-beam 28. With 89 a holding block of the U-beams 28, 29 and 90 fastening screws of the holding block 89 is designated.

The carriage 3 runs along the one long side of the carrier 2 in guide rails 62 on ball bearings 61 (see FIG. 4). On both sides of the carriage 3, a traction cable 41 is fastened to it, which is guided around deflection rollers (not shown) and fastened to a weight 40 (see FIG. 5). The weight 40 is provided with two rollers 42 which run in guide grooves 63 of a box 92 fastened to the other longitudinal side of the carrier 2.

As can be seen from FIGS. 2, 4 and 5, each U-beam 28, 29 has a pin 64, which pins abut a control part 65. The outward-facing surface 66 of the control part 65 is offset inwards in its lower half; the control part 65 is also slit. Through the slot 67, a locking bolt 51 is passed, the part protruding outwards from the control part 65 is provided with two coaxial rollers 68 which rest on the outer surface 66 of the control part 65. The locking bolt 51 has a shoulder 69 on its inner end, on which a compression spring 70 acts. By actuating the handle 4, one of the U-beams 28, 29 is moved downward with its pin 64. As a result, the control part 65 is also pressed down, the rollers 68 running over the non-offset part of the outer surface 66 of the control part 65. As a result, the shoulder 69 of the locking bolt 51 is brought out of braking engagement with a brake lining 71 attached to the carrier 2, so that the slide 3 can be moved back and forth smoothly over the useful width of the table 1. As soon as the handle 4 is released from its depressed position. the carriage 3 is locked in its movement by the braking action of the locking bolt 51 pressed against the brake lining 71. The control part 65 is pressed down against the action of a coil spring 72.

3, 4 and 11, the inserted into the work table 1 steel strip 8 and the profile strips 10 can be seen. The distance between the two profile strips 10 is adjustable. This is done by means of a vernier 25, which is in a wrap connection with two wedge pieces 26 arranged on both sides of the profile strips 10. By the mutual displacement of the wedge pieces 26, the distance between ben two profile strips is made smaller or larger. The range in which the distance can be changed is between 0 and 4 mm. 87 (FIG. 4) designates guide pins of the two profile strips 10 and mif 45 (FIG. 11) compression springs, by means of which the two profile strips 10 are held apart. The adjustable distance between the two profile strips 10 creates a groove into which the cardboard, paper or corrugated cardboard is partially pressed during the work process by the profiles of the three profile rollers 16. When marking a corrugated cardboard 44, the creasing tool 6 with three profile rollers 16 is replaced by a single roller 18 according to FIG. 8. In this case, an insert 43 is inserted into the groove formed between the two profile strips 10.

In order to obtain clean edges on the outside of the creases when using profile rollers 16, a base film 12 is placed over the upper surface of the profile strips 10. The base film 12 is removed by means of a crank 13 and two guide rollers 32, the crank 13 being operatively connected to the lower guide roller, from a supply roller 14 accommodated under the work table 1. With the help of the marking roller 18, 44 of poor quality or of more than 600 g weight (gray cardboard) is also creased cleanly in the case of a corrugated cardboard which is difficult to crease.

As can be seen from FIGS. 4 and 12, the carrier 2 has on its transverse side facing the operator a lever 22 which is operatively connected to a chain 47. The chain 47 runs in the carrier 2 over its entire length. The chain 47 runs over a plurality of gearwheels 49 arranged one behind the other in the longitudinal direction of the carrier 2. A roller 93 is provided on each side of each gearwheel 49, which rollers are designed such that they operate when the lever 22 is actuated and the chain 47 is displaced thereby press on a clamping plate 48 with clamping bolts 39 and compression springs 96 and press them against the cardboard, the paper or the corrugated cardboard lying on the steel bar 8 of the work table 1. When the lever 22 is released, the clamping plate 48 is brought back into its starting position by means of tension springs 73.

The application and storage device according to FIGS. 14 and 15 has a measuring strip 19 with a triple scale 20, to which a guide rail 77 for guiding a carriage 24 is fastened. The carriage 24 is guided on the guide rail 77 by means of guide rollers 78 and can be clamped in the desired position by means of a clamping lever 76. A contact ruler 21 with a drawing head 88 is pivotably arranged on the carriage 24. The position of the contact ruler 21 can be fixed by means of an adjusting screw 75. Each scale 20 corresponds to the zero position of the cutting tool 5, scoring tool 6 or scoring tool 7. The carriage 24 is laterally adjustable on both sides.

The storage device comprises a program rail 35 with cutouts 30 in the form of longitudinal slots. Set screws 31 provided with nuts 82 are slidably arranged in the longitudinal slots from below. These set screws engage in nuts 79 which lie above the cutouts 30. A cone 83 is incorporated in each nut 79. In the carriage 24, vertical spring-loaded positioning pins 80 are arranged so that their conical tips 84 protrude from the carriage 24 on its lower side. The conical tips 84 are designed to engage in selected cones 83 of the nuts 79. By turning the nut 81 of a positioning pin 80 by 180 °, the conical tip 84 of the same is completely disengaged from the cone 83 in the nut 79. By moving the carriage 24, the conical tips 84 of the positioning pins 80 can be brought out of the cones 83 of the nuts 79 without turning the nut 81 and can snap into other desired cones 83 due to the action of the compression spring 85.

Cardboard, paper or corrugated cardboard are cut by the shearing action of the rotating circular knife 15. The cutting tool 5 is provided with a roller 95 which is supported against a rail 94 fastened to the carrier 2 (FIG. 3). The lower part of the rail is offset inwards on the outer surface facing the roller 95. When the handle 4 is lowered, the roller 95 runs first along the non-offset part and then along the offset part of the rail outer surface, so that the circular knife 15 comes to bear against the steel bar 8 in the working position. By lowering the handle 4 and pressing the push button 27, it is possible to alternate between cutting and creasing. The circular knife 15 is easily accessible and can be easily replaced for regrinding.

The creasing tool 6 with the three profile rollers 16 enables clean creasing in the cardboard, paper or corrugated cardboard. The required stroke of the creasing tool 6 or the marking roller 18 corresponds in each case to the weight, the nature and the strength of the cardboard, the paper or the corrugated cardboard. The creasing effect on the carton takes place with increasing depth, which ensures a clean creasing. For diagonal grooving, the required angle can be adjusted with the movable drawing head 88 on the mobile carriage 24. This work is facilitated by the fact that the guide rail 77 for the carriage 24 can be used on both sides of the work table 1 as required. The adjustment screw 75 on the carriage 24 can be actuated for the production of grooves which have to be displaced slightly to take account of or to compensate for the carton thickness, depending on the box function. The transfers and precise creation can be read from the scale 20. Partial creases can also be produced easily and precisely.

The scoring tool 7 is used for scoring cardboard, which is arranged in the same place as the scoring tool 6 removed and is actuated in the same way. With the scoring knife 17, regular and clean scoring can be produced over the entire useful width of the work table 1. As with local scoring, the scoring knife 17 can also be used as a knife for incisions, windows, etc. For this purpose, only a protective sheet of cardboard or plastic needs to be inserted under the cardboard to be processed.

A sample of the scribing made with the device described above is shown in Fig. 1a. The creasing consolidated with a creasing tool with three profile rollers, but without using the base film, is shown in FIG. 1 and the creasing that was produced with the same tool, but using base film 12, is shown in FIG. 1c; finally the creasing carried out with the marking roller 18 is shown in FIG. 1d.

Test samples are usually grooved and / or scored individually. All positions are selected as required using the application device with millimeter scales. With the drawing head 88 arranged on the laterally movable carriage 24, any angle of the contact ruler 21 can be set in the range from 0 to 180 °. For repetitive or series processing, there is a special device for registering all positions and processes. To find out earlier positions, the laterally adjustable carriage 24 is simply adjusted on the guide rail 77. With the device for carrying out the method described above, all cuts, scoring and scoring are produced in repetitive or series work with the absolutely same dimensions and the same quality as if they were carried out with a die.

Claims (6)

1. Device for making patterns or models of cardboard, paper, or corrugated board, having a height- and tilt-adjustable rectangular work table (1) and a support (2) running at right angles to the longitudinal axis of the table and fixedly attached to the table, on which support a slide block (3) reciprocatingly displaceable by hand over the useful width of the table and having a spring-biased handle (4) is disposed, characterized in that the slide block (3) is equipped with a cutting tool (5) and a grooving tool (6) which can be brought selectively into working position by actuation of the handle (4), the grooving tool (6) comprising either three interchangeable shaping rollers (16) disposed one behind the other on a sliding carriage (11) or a single roller (18) for marking corrugated board (44), the three shaping rollers (16) grooving the cardboard or paper in co-operation with two shaping rails (10) attached to the table (1) and having adjustable spacing between them or in co-operation with the shaping rails (10) and a backing film (12) laid over the shaping rails (10), which grooving tool (6) is exchangeable and replaceable by a scoring tool (7), that the cutting operation can be switched over to the grooving operation and vice versa by means of a push button (27) provided on the handle (4), which push button is operatively connected via its presser bar (52) and gearwheels (33, 34) to one of two U-supports (28, 29), one of which (28) bears the grooving tool (6) and the other (29) the cutting tool (5), that the slide block (3) can be stopped on the support (2) after the terminated working operation by means of a spring-biased stop bolt (51), and that there is provided for the cardboard, paper, or corrugated board to be cut. grooved, or scored a feeder device and a storage device registering all positions of repeat or series operations which comprises a program rail (35) having recesses (30) into which setscrews (31) with nuts (79) can be screwed fast, which nuts have cones (83) for the snapping-in of positioning pins (80).

2. Device according to patent claim 1, characterized in that the cutting tool (5) comprises an adjustable circular knife (15) which cuts the cardboard, paper, or corrugated board along a steel strip (8) set into the table (1).

3. Device according to patent claim 1, characterized in that the scoring tool (7) comprises a scoring knife (17) which scores the cardboard in cooperation with the steel surface of the shaping rails (10).

4. Device according to patent claim 1, characterized in that the spacing between the two shaping rails (10) is adjustable in the range of from 0 to 4 mm by means of a vernier (25) which is operatively connected to wedge pieces (26) disposed two on each side of the shaping rails (10), and the stroke of the grooving tool (6) or scoring tool (7) is adjustable by means of a micrometer screw (23).

5. Device according to patent claim 1, characterized in that the backing film (12) can be unwound by means of a crank (13) from a supply roll (14) accommodated under the table (1).

6. Device according to patent claim 1, characterized in that the feeder device comprises a measuring strip (19) having a triple scale (20), each scale corresponding to the zero position of the cutting (5), grooving (6), or scoring tool (7), and a laterally adjustable carriage (24) having a signal head (88) and a guide rule (21).

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