EP1995077B1 - Perforation device - Google Patents

Perforation device Download PDF

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Publication number
EP1995077B1
EP1995077B1 EP20080003852 EP08003852A EP1995077B1 EP 1995077 B1 EP1995077 B1 EP 1995077B1 EP 20080003852 EP20080003852 EP 20080003852 EP 08003852 A EP08003852 A EP 08003852A EP 1995077 B1 EP1995077 B1 EP 1995077B1
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EP
European Patent Office
Prior art keywords
perforation
roller
drive
projections
rollers
Prior art date
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Active
Application number
EP20080003852
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German (de)
French (fr)
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EP1995077B8 (en
EP1995077A1 (en
Inventor
Michael Grünert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Festool Group and Co KG
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Festool GmbH
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Publication date
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Publication of EP1995077A1 publication Critical patent/EP1995077A1/en
Publication of EP1995077B1 publication Critical patent/EP1995077B1/en
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Publication of EP1995077B8 publication Critical patent/EP1995077B8/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C7/00—Paperhanging
    • B44C7/02—Machines, apparatus, tools or accessories therefor
    • B44C7/027—Machines, apparatus, tools or accessories for removing wall paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/24—Perforating by needles or pins

Definitions

  • the invention relates to a perforation device for perforating a substrate, in particular a wallpaper, with a roller assembly with projecting in front of a roller surface of a Perforationswalzen Anlagens, perforated Perforationsvorsprüngen for perforating the substrate.
  • perforating devices are known from the prior art.
  • the utility model describes DE 80 14 118 U1 a perforating device with two perforating rollers or spiked rollers, which are arranged V-shaped at an obtuse angle next to each other.
  • the spiked rollers rotate freely, whereby a ripping effect is caused by the mutually angular axes of rotation.
  • perforating devices without an additional drive perforating devices have an insufficient tear or perforation effect.
  • perforating devices with electric drive may have a better perforation effect, but are more prone to error and more complex.
  • DE 25 34 907 A1 goes out a Putzentferner device with a scratch roller, which is driven by a drive roller.
  • the drive roller is rubber-coated and can be electrically driven if desired, for example with a tubular motor.
  • the basic principle according to the invention provides that a slip exists between the roll surfaces of the perforation roll region and the drive roll region. Due to different rolling speeds of the perforation roller area on the one hand and the drive roller area on the other hand, the perforation effect is created. It is fundamentally possible for the perforation roller area to have a higher unwinding speed than the drive roller area or vice versa.
  • the perforation device works purely mechanically. An additional drive is not required.
  • a drive roller drives a perforation roller so that it has a maximum tear effect.
  • the perforation roller is for example a kind of spiked roller.
  • the perforating device for perforating a substrate has, for example, at least one perforating roller with projecting, perforated perforation projections in front of a roller surface for perforating the substrate.
  • this perforating device is advantageously provided that it is at least one drive roller for rotatably driving the perforation roller coupled thereto, for. via a gear, and that the at least one drive roller and the at least one perforation roller for rolling on the ground next to each other are rotatably mounted on a frame.
  • the at least one drive roller has drive projections protruding in front of the roller surface.
  • these drive projections could be formed by protruding ribs or the like, for example made of rubber.
  • the drive projections are perforation drive projections, so that the perforation effect is effected on the one hand by the drive roller and on the other hand by the perforation roller.
  • the transmission between the perforating roller and the drive roller is conveniently a reduction gear which causes the perforating roller to rotate slower than the drive roller.
  • the perforation roller has a lower peripheral speed than the drive roller in its penetration area into the ground.
  • the drive roller "tows" the perforation roller in a sense behind it. This causes a tear effect of the perforation roller.
  • the torque output on the perforation roller is improved.
  • a transmission gear or a transmission with a ratio of 1: 1 is possible.
  • rollers of different diameters are motion-coupled with each other.
  • the perforating roller has a smaller diameter than the drive roller, so that it rolls more slowly on the ground than the drive roller.
  • the transmission is expediently a belt transmission, for example a toothed belt transmission. It is understood that other types of transmission, such as worm gear, friction gear or the like, are possible.
  • the perforation projections and the drive projections are geometrically the same or the same.
  • perforation projections as well as for the drive projections if they comprise, for example, spines, mandrels or the like.
  • the perforation projections or the drive projections are advantageously at an angle in front of the respective roll surface. But it is also conceivable that, for example, the drive projections protrude radially outward, while the perforation projections are inclined, or vice versa.
  • the tips of the Perforationsvorsprünge penetrate expediently in the sense of a tearing at an acute angle into the ground.
  • the perforation projections are preferably inclined against a running direction of the at least one perforation roller in an area of penetration into the ground.
  • the Perforationsvorsprünge pierce so to speak, pointed into the ground, for example, the wallpaper to be detached.
  • the drive projections are inclined in the sense of a claw with the direction of the drive roller in a penetration area in the ground.
  • the Perforationsvorsprünge and the drive projections are suitably inclined in opposite directions.
  • the tilt angles are preferably identical, so that a perforation roller can be exchanged for a drive roller and vice versa.
  • the perforation projections or the drive projections may be formed in a variety of ways.
  • An embodiment provides, for example, that the perforation projections or the drive projections are arranged on disc elements.
  • the disc elements are, for example, stamped parts, laser-cut components or the like.
  • the disc elements are expediently lined up on a support rod or a carrier shaft, wherein between each two disc elements preferably a spacer element is arranged. This creates a sandwich-like structure.
  • the perforation roller and the drive roller advantageously have a same outer diameter.
  • the perforation roller and the drive roller are even identical, so that they can be replaced in case of wear.
  • a depth adjustment device is preferably provided. This has, for example, a role that protrudes toward the ground in front of the frame.
  • a sliding projection is preferred.
  • a skid is expediently arranged or the sliding projection is designed like a runner.
  • the sliding projection is resilient, for example.
  • the sliding projection is biased against a Tiefeneinstellschraube.
  • One end of the sliding projection is preferably fixed movably on the frame of the perforation device.
  • a perforation roller is arranged behind each drive roller.
  • a perforation device In a perforation device according to the invention, different groups of drive rollers or perforation rollers can be provided.
  • a simple construction provides that, for example, only a single drive roller and only a single perforation roller are present. But even a pair of arrangement of perforation and drive rollers is appropriate.
  • the drive rollers and the perforation rollers are expediently arm-like from the frame.
  • the frame-side end portions of the respective rollers are rotatably mounted on the frame. Free ends protrude from the frame.
  • an operating handle which is fixed or hinged between the respective pair of rollers on the frame.
  • an operating handle is available in the center of the perforation device.
  • a handle or hand knob is advantageous.
  • the respective operating handle is removably attached to the frame.
  • a hand knob operating handle against a telescoping rod and vice versa to exchange.
  • a substrate 11 which is provided, for example with a wallpaper 12 or other surface coating, perforated.
  • the perforating devices 10a, 10b and 10c have roller assemblies 7a, 7b and 7c each having two perforating rollers 13a for perforating the base 11, while a roller assembly 7d of the perforating device 10d has only one perforating roller 13b.
  • the roll surfaces 14a, 14b form perforation roll areas 8a, 8b.
  • the drive roller areas 9a, 9b are assigned to the perforation roller areas 8a, 8b, the roller areas 8a, 8b or 9a, 9b having different rolling speeds on the base 11.
  • the perforation rollers 13a, 13b are associated with drive rollers 16a, 16b, which drive the perforation rollers 13a, 13b via gear 17.
  • the gear 17 are formed for example by toothed belt transmission 18.
  • one drive roller 16a, 16b is assigned to each one perforation roller 13a, 13b.
  • a respective perforation roller 13a or 13b each have a drive roller 16a or 16b available.
  • the drive rollers 16a, 16b have drive projections 19a, 19b projecting in front of their roller surfaces 20a, 20b.
  • the roller surfaces 20a, 20b form the drive roller areas 9a, 9b.
  • the drive projections 19a, 19b engage or dig into the perforation devices 10a-10d by rolling them over the substrate 11 so that the drive rollers 16a, 16b can receive driving force for driving the perforation rollers 13a, 13b.
  • This drive force transmits the gear 17 by means of a toothed belt 21 on the perforation rollers 13a, 13b.
  • the toothed belt 21 passes over a drive wheel 22, which is rotationally coupled to the drive rollers 16a, 16b, and further via a driven gear 23, which is rotationally coupled to the perforation rollers 13a, 13b.
  • a toothing 24 on the inside of the toothed belt 21 meshes with a toothing 25 of the toothed belt wheels forming drive wheels 22 and output gears 23.
  • the toothed belt 21 is guided between guide edges 26 adjacent to the serrations 25 so that it does not jump off the wheels 22, 23.
  • the drive wheels 22 are smaller in diameter than the driven wheels 23.
  • the gears 17 constitute reduction gears, that is, the perforation rollers 13a, 13b rotate slower than the drive rollers 16a, 16b when rolling the perforator 10 over the ground 11.
  • the perforation projections 15a, 15b create slot-like perforations.
  • the perforation rollers 13a, 13b tear these elongated holes into the substrate 11.
  • the drive projections 19a, 19b are inclined like a claw with respect to a running direction 27 of the drive rollers 16a, 16b in a penetration region 28 of the drive projections 19a, 19b in the ground 11 inclined.
  • the running direction 27 is the direction of rotation of the drive rollers 16a, 16b when moving the perforation devices 10a-10d in a working direction 29 via the substrate 11.
  • the perforation projections 15a, 15b are inclined in opposite directions to the drive projections 19a, 19b. Tips 30 of the perforation projections 15a, 15b penetrate counter to the working direction 29 in the substrate 11 perforating.
  • the tips 30 are inclined against a running direction 31 of the perforation projections 15a, 15b in their respective penetration region 32 into the substrate 11.
  • the drive rollers 16a, 16b and the perforation rollers 13a, 13b rotate in the same direction.
  • the directions of rotation 27, 31 are in the same direction.
  • the perforation rollers and the drive rollers can also perform an opposite rotation when the respective gear reverses the direction of rotation.
  • the inclination angles or inclination angles of the drive projections 19a, 19b and the perforation projections 15a, 15b are equal. This is effected, for example, in that the perforation roller 13a and the drive roller 16a and the perforation roller 13b and the drive roller 16b are identical in construction and thus can be interchanged, which minimizes wear and also has a certain re-sharpening effect for the tips 30.
  • rollers 13a, 16a on the one hand and 13b, 16b on the other hand are of identical construction, only the perforation rollers 13a, 13b are explained below:
  • disc elements 34 in front of the outer periphery of the perforation projections 15a project, lined up with the interposition of a respective spacer element 35 on a support rod 36.
  • the disk elements 34 are punched parts made of sheet metal, for example.
  • the spacer elements 35 are for example plastic or rubber discs, which define a distance between the disc elements 34.
  • two adjoining a spacer element 35 disc elements 34 have a rotational offset, such that, seen in the circumferential direction, a perforation projection 15a of the other disc element 34 is positioned at a distance between two perforation projections 15a of a disc element.
  • the disc elements 34 expediently also the spacer elements 35, are arranged on the carrier bar 36 so as to be secure against rotation.
  • the carrier bar 36 has, for example, a polygonal, in particular hexagonal, outer contour, which correlates with an inner contour of passage openings (not shown) of the disc elements 34 and the spacer elements 35.
  • the sandwiched disc elements 34 and spacers 35 are fixed, for example, by a screw 39 on the support rod 36, which at a free end of the Support rod 36 is preferably screwed with the interposition of a washer.
  • the perforation projections 15b of the perforation rollers 13b are, for example, claw or mandrel pieces 38 inserted into a base roller 37.
  • the base roller 37 is made of plastic, for example, and the claw pieces 38 are made of metal.
  • the claw pieces 38 may also be integrally formed on the base roller 37.
  • the perforation rollers 13a, 13b and the drive rollers 16a, 16b are rotatably mounted on racks 40a, 40b, 40c and 40d of the perforation devices 10a-10d.
  • Different types are possible:
  • roller pairs consisting of a respective drive roller 16a and a perforation roller 13a are provided on opposite sides in front of the racks 40a-40c.
  • the rollers 13a, 16a are arm-like in front of the frames 40a, 40b and 40c.
  • the rollers 13a, 16a are rotatably mounted about axes of rotation 41, 42 on the racks 40a, 40b and 40c.
  • the axes of rotation 41, 42 are parallel, with an inclination of one or the other axis of rotation 41 or 42 being possible in principle.
  • V-shaped inclinations are possible, for example, between drive rollers of a drive roller pair and / or perforation rollers of a perforation roller pair.
  • the support rods 36 form axle shafts 43, which are rotatably connected to the drive wheels 22 and output gears 23 of the gear 17.
  • the wheels 22, 23 are arranged on the axle shafts 43 or the axle shafts 43 project laterally in front of the wheels 22, 23.
  • a Spacer 44 between a respective wheel 22 or 23 and the adjacent first perforation projections 15a having disc element 34 is arranged.
  • the frame 40a includes a housing 45, in the interior of the gear 17 is arranged protected.
  • the housing 45 has, for example, a reinforcing rib structure.
  • the housing 45 is formed for example by two housing parts 46 (in FIG. 2 only one housing part 46 is visible), which are connected to each other by screwed in ringdome 47 screws.
  • Protective covers 48 cover the rollers 13a, 16a of the perforating device 10a.
  • the protective covers 48 are, for example, integral components of the housing 45 or cover hood parts fastened to the frame 40a.
  • the protective covers 48 reduce the risk of injury.
  • the protective covers 48 cover the tops of the rollers 13a, 16a and extend to their respective free ends.
  • the operating handle 50a is, for example, a rod 51a.
  • the rod 51a is preferably pivotally mounted on the frame 40a.
  • the front end of the rod 51a is pivotally mounted on a pivot bearing 52 of the frame 40a.
  • Bearing arms 53 at the front end of the rod 51 a pass through the recesses 49 and are pivotally mounted on the pivot bearing 52.
  • a handle 54 is advantageous.
  • the operating handle 50a is arranged in a center between the rollers 13a, 16a, so that a maximum force application by a user of the perforating device 10a is possible.
  • a skid 56 which protrudes downwardly in front of the frame 40a, has resilient holding portions 57 which are fixed to the housing 45 below, for example, glued or screwed with holes 58 penetrating, not shown screws.
  • the skid 56 and the holding portions 57 are suitably formed by a stamped and bent part, which is resilient to itself.
  • the skid 56 has through the resilient holding portions 57 the effort to spring in the direction of the frame 40 a and 45 of the housing.
  • the skid 56 is depending on the linear position of a screw 59 or other Leksverstell adopted more or less far down in front of the frame 40a and the roller circumference of the perforation roller 13a and thus influences the penetration depth of the perforation projections 15a.
  • the screw 59 is for example mounted at an angle to the frame 40a rotatably.
  • the screw 59 expediently has an operating handle 60 and displaces the skid 56, which forms a sliding projection, toward the base 11.
  • the screw 59 serves for depth adjustment of the skid 56 against the spring force of the holding portions 57th
  • the perforator 10b has as an operating handle 50b a telescoping rod 51b.
  • An upper rod portion 61 and a lower rod portion 62 are longitudinally displaceable relative to each other and with a locking device 63 relative to each other can be fixed.
  • the rod 51b is pivotally mounted on the frame 40b with a pivot bearing 52b.
  • the pivot bearing 52b includes a bearing head 64 protruding upward in front of the frame 40b, on which arms 65 are pivotally supported at the front end of the rod 51b so as to be pivotable about an axis of rotation 66.
  • the axis of rotation 66 is in a plane parallel to the axes of rotation of the rollers 13a, 16a. Perpendicular to this plane extends an optional axis of rotation 67 when the bearing head 64 is pivotally mounted on the frame 40b.
  • the pivot bearing 52b is a pivot bearing in the manner of a universal joint or a cardan pivot bearing.
  • the frame 40b is relatively simple. It includes, for example, a frame part 68 with fork ends 69, between the arms 70, the drive wheel 22 and at the other end the drive wheel 23 are rotatably received.
  • the rollers 13a, 16a are also rotatably mounted on the arms 70, wherein axle shafts penetrate the arms 70 and are rotationally coupled to the wheels 22, 23.
  • the rollers 13a, 16a are laterally from the frame 40b.
  • the frame 40b is, for example, a casting made of plastic or metal.
  • a pivot bearing holder 71 for holding the bearing head 64 sits like a rider on the frame part 68, so that in a space between the pivot bearing holder 71 and the frame part 68 of the toothed belt 21 can extend.
  • a similar fastening concept is also realized with an operating handle 50c of the perforation device 10c.
  • the operating handle 50c is formed by a handle 72, which is designed, for example, as an operating knob 73. It is understood that alternative handles are conceivable, for example, bow-like handles or the like.
  • the handle 72 is attached to retaining projections 74, for example screwed, projecting laterally on the frame part 68c of the frame 40c on opposite sides.
  • the frame part 68c has like the frame part 68 fork-shaped ends on which the wheels 22, 23 of the transmission 17 are rotatably mounted.
  • the toothed belt 21 extends below the operating knob 73 at a distance between the operating knob 73 and the frame part 68c.
  • the handle 72 sits as it were like a rider on the frame part 68c.
  • the toothed belts 21 extend around the frames 40a, 40c.
  • a depth adjuster 55c of the perforator 10c has a similar concept as the depth adjuster 55a.
  • An adjusting screw 59c is longitudinally adjustable on the frame 40c and acts with its front, free end on a skid 56c.
  • the skid 56c is fixed with retaining portions 57c resiliently on the underside of the frame 40c.
  • FIG. 6 is shown with solid lines, an upper depth adjustment of the depth adjustment 55c, which allows a deeper penetration of the perforation projections 15a as a dashed lines drawn lower position of the Tiefeneinstell issued 55c.
  • a frame 40d of the perforator 10d has two side portions 75, 76 on which the perforating roller 13b and the drive roller 16b are rotatably supported.
  • the side parts 75, 76 have bearing recesses or bearing bores (not visible) for axle shafts 77, 78 of the rollers 13b, 16b.
  • the axle shafts 77, 78 protrude laterally in front of an outer side of the side part 76, wherein the wheels 22, 23 are arranged on the projecting portions of the axle shafts 77, 78.
  • the two side parts 75, 76 are by a cross member 79, which extends between the rollers 13b, 16b at the top of the frame 40d, connected to each other.
  • the perforation projections 15b and the drive projections 19b are inclined in opposite directions, wherein the drive projections 19b are obliquely inclined in the sense of a claw, while the perforation projections 15b are inclined in the sense of a claw.
  • an operating handle for example in the manner of the handle 72 or, for example, a bracket, are attached.
  • a perforation device 10e is partially similar in construction to the perforation device 10a, that is to say it has, in front of a frame 40e, laterally projecting perforation rollers 13e and drive rollers 16e. In contrast to the perforation device 10a, however, the rollers 13e, 16e have different diameters. The perforating rollers 13e are the smaller rollers.
  • the rollers 13e, 16e are coupled to each other in motion via a gear 17e.
  • the transmission 17e is a toothed belt transmission 18e with a gear ratio of 1: 1.
  • a toothed belt 21e couples the rollers 13e, 16e of the roller assembly 7e.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

Die Erfindung betrifft eine Perforationsvorrichtung zum Perforieren eines Untergrundes, insbesondere einer Tapete, mit einer Walzenanordnung mit vor eine Walzenoberfläche eines Perforationswalzenbereichs vorstehenden, spitzen Perforationsvorsprüngen zum Perforieren des Untergrunds.The invention relates to a perforation device for perforating a substrate, in particular a wallpaper, with a roller assembly with projecting in front of a roller surface of a Perforationswalzenbereichs, perforated Perforationsvorsprüngen for perforating the substrate.

Zum Perforieren von Untergründen, die beispielsweise mit einer Tapete, mit einer Lackschicht oder dergleichen versehen sind, sind Perforationsvorrichtungen aus dem Stand der Technik bekannt. Beispielsweise beschreibt das Gebrauchsmuster DE 80 14 118 U1 eine Perforationsvorrichtung mit zwei Perforationswalzen oder Stachelwalzen, die V-förmig in einem stumpfen Winkel nebeneinander angeordnet sind. Die Stachelwalzen drehen frei, wobei durch die zueinander winkelig stehenden Drehachsen ein Reißeffekt bewirkt wird.For perforating substrates, which are provided for example with a wallpaper, with a lacquer layer or the like, perforating devices are known from the prior art. For example, the utility model describes DE 80 14 118 U1 a perforating device with two perforating rollers or spiked rollers, which are arranged V-shaped at an obtuse angle next to each other. The spiked rollers rotate freely, whereby a ripping effect is caused by the mutually angular axes of rotation.

Aus dem Gebrauchsmuster DE 298 16 176 U1 geht eine Aufbrecheinheit hervor, bei der Walzen oder Scheiben mit Aufbrech- oder Perforationsvorsprüngen über einen Untergrund geführt werden. Die Aufbrech- oder Perforationseinheit ihrerseits wird beispielsweise mit einem elektrischen Antrieb angetrieben.From the utility model DE 298 16 176 U1 shows a breaker, are performed in the rolls or discs with break-off or perforation projections over a substrate. The Aufbrech- or perforation unit in turn is driven, for example, with an electric drive.

Aus der Patentschrift DE 43 23 580 C2 geht eine Perforationsvorrichtung beziehungsweise ein Reißwerkzeug hervor, bei dem zwei Stachelwalzen eine translatorische, quer zu ihrer Drehrichtung gerichtete Bewegung durchführen, sodass dadurch ein Reißeffekt bewirkt ist. Zwischen den Stachelwalzen wird die Zwangsverschiebung durch Führungskulissen bewirkt.From the patent DE 43 23 580 C2 is a perforation or a tearing tool, in which two spiked rollers perform a translational, directed transversely to their direction of rotation, thereby causing a ripping effect. Between the spiked rollers, the forced displacement is caused by guiding scenes.

Die aus dem Stand der Technik bekannten, ohne einen zusätzlichen Antrieb ausgestatteten Perforationsvorrichtungen haben jedoch einen unzureichenden Reiß- oder Perforationseffekt. Perforationsvorrichtungen mit elektrischem Antrieb mögen zwar einen besseren Perforationseffekt haben, sind jedoch fehleranfälliger und insbesondere aufwändiger.However, known from the prior art, without an additional drive perforating devices have an insufficient tear or perforation effect. Although perforating devices with electric drive may have a better perforation effect, but are more prone to error and more complex.

Aus DE 25 34 907 A1 geht ein Putzentferner-Gerät mit einer Kratzwalze hervor, die mittels einer Antriebswalze angetrieben wird. Die Antriebswalze ist gummibeschichtet und kann auf Wunsch elektrisch angetrieben werden, beispielsweise mit einem Röhrenmotor.Out DE 25 34 907 A1 goes out a Putzentferner device with a scratch roller, which is driven by a drive roller. The drive roller is rubber-coated and can be electrically driven if desired, for example with a tubular motor.

Es ist daher die Aufgabe der vorliegenden Erfindung, eine robuste Perforationsvorrichtung mit einem guten Perforationseffekt bereitzustellen.It is therefore the object of the present invention to provide a robust perforation device with a good perforation effect.

Zur Lösung der Aufgabe ist eine Perforationsvorrichtung gemäß der technischen Lehre des Anspruchs 1 vorgesehen.To solve the problem, a perforation device according to the technical teaching of claim 1 is provided.

Das erfindungsgemäße Grundprinzip sieht vor, dass zwischen den Walzenoberflächen der Perforationswalzenbereiches und des Antriebswalzenbereiches ein Schlupf vorhanden ist. Durch unterschiedliche Abrollgeschwindigkeiten des Perforationswalzenbereichs einerseits und des Antriebswalzenbereichs andererseits entsteht die Perforationswirkung. Dabei ist es grundsätzlich möglich, dass der Perforationswalzenbereich eine höhere Abrollgeschwindigkeit aufweist, als der Antriebswalzenbereich oder umgekehrt.The basic principle according to the invention provides that a slip exists between the roll surfaces of the perforation roll region and the drive roll region. Due to different rolling speeds of the perforation roller area on the one hand and the drive roller area on the other hand, the perforation effect is created. It is fundamentally possible for the perforation roller area to have a higher unwinding speed than the drive roller area or vice versa.

Die Perforationsvorrichtung arbeitet rein mechanisch. Ein zusätzlicher Antrieb ist nicht erforderlich. Beispielsweise treibt eine Antriebswalze eine Perforationswalze an, sodass diese einen maximalen Reißeffekt aufweist. Die Perforationswalze ist beispielsweise eine Art Stachelwalze.The perforation device works purely mechanically. An additional drive is not required. For example, a drive roller drives a perforation roller so that it has a maximum tear effect. The perforation roller is for example a kind of spiked roller.

Die Perforationsvorrichtung zum Perforieren eines Untergrundes hat beispielsweise mindestens eine Perforationswalze mit vor eine Walzenoberfläche vorstehenden, spitzen Perforationsvorsprüngen zum Perforieren des Untergrunds. Bei dieser Perforationsvorrichtung ist vorteilhaft vorgesehen, dass sie mindestens eine Antriebswalze zum rotatorischen Antreiben der Perforationswalze mit dieser bewegungsgekoppelt ist, z.B. über ein Getriebe, und dass die mindestens eine Antriebswalze und die mindestens eine Perforationswalze zum Walzen auf dem Untergrund nebeneinander an einem Gestell drehbar gelagert sind.The perforating device for perforating a substrate has, for example, at least one perforating roller with projecting, perforated perforation projections in front of a roller surface for perforating the substrate. In this perforating device is advantageously provided that it is at least one drive roller for rotatably driving the perforation roller coupled thereto, for. via a gear, and that the at least one drive roller and the at least one perforation roller for rolling on the ground next to each other are rotatably mounted on a frame.

Die mindestens eine Antriebswalze hat vor die Walzenoberfläche vorstehende Antriebsvorsprünge. Diese Antriebsvorsprünge könnten zwar durch vorstehende Rippen oder dergleichen, beispielsweise aus Gummi, gebildet sein. Zweckmäßigerweise sind die Antriebsvorsprünge jedoch Perforations-Antriebsvorsprünge, sodass die Perforationswirkung einerseits durch die Antriebswalze und andererseits durch die Perforationswalze bewirkt wird.The at least one drive roller has drive projections protruding in front of the roller surface. Although these drive projections could be formed by protruding ribs or the like, for example made of rubber. Advantageously, however, the drive projections are perforation drive projections, so that the perforation effect is effected on the one hand by the drive roller and on the other hand by the perforation roller.

Das Getriebe zwischen der Perforationswalze und der Antriebswalze ist zweckmäßigerweise ein Untersetzungsgetriebe, das bewirkt, dass die Perforationswalze langsamer dreht als die Antriebswalze. Die Perforationswalze hat in ihrem Eindringbereich in den Untergrund eine geringere Umfangsgeschwindigkeit als die Antriebswalze. Die Antriebswalze "schleppt" die Perforationswalze in gewissem Sinne hinter sich her. Dies bewirkt einen Reißeffekt der Perforationswalze. Die Drehmomentabgabe auf die Perforationswalze ist verbessert.The transmission between the perforating roller and the drive roller is conveniently a reduction gear which causes the perforating roller to rotate slower than the drive roller. The perforation roller has a lower peripheral speed than the drive roller in its penetration area into the ground. The drive roller "tows" the perforation roller in a sense behind it. This causes a tear effect of the perforation roller. The torque output on the perforation roller is improved.

Es versteht sich, dass alternativ beispielsweise auch ein Übersetzungsgetriebe oder ein Getriebe mit einer Übersetzung 1:1 möglich ist. Beispielsweise sind Walzen unterschiedlichen Durchmesser miteinander bewegungsgekoppelt. Zweckmäßigerweise weist die Perforationswalze einen kleineren Durchmesser auf als die Antriebswalze, so dass sie langsamer auf dem Untergrund abrollt als die Antriebswalze.It is understood that alternatively, for example, a transmission gear or a transmission with a ratio of 1: 1 is possible. For example, rollers of different diameters are motion-coupled with each other. Conveniently, For example, the perforating roller has a smaller diameter than the drive roller, so that it rolls more slowly on the ground than the drive roller.

Das Getriebe ist zweckmäßigerweise ein Riemengetriebe, beispielsweise ein.Zahnriemengetriebe. Es versteht sich, dass auch andere Getriebearten, beispielsweise Schneckengetriebe, Reibradgetriebe oder dergleichen, möglich sind.The transmission is expediently a belt transmission, for example a toothed belt transmission. It is understood that other types of transmission, such as worm gear, friction gear or the like, are possible.

Beispielsweise sind die Perforationsvorsprünge und die Antriebsvorsprünge geometrisch gleich oder gleichartig.For example, the perforation projections and the drive projections are geometrically the same or the same.

Sowohl für die Perforationsvorsprünge als auch für die Antriebsvorsprünge ist es vorteilhaft, wenn sie beispielsweise Stacheln, Dorne oder dergleichen umfassen.It is advantageous for the perforation projections as well as for the drive projections if they comprise, for example, spines, mandrels or the like.

Die Perforationsvorsprünge oder die Antriebsvorsprünge stehen vorteilhaft schräg vor die jeweilige Walzenoberfläche vor. Es ist aber auch denkbar, dass beispielsweise die Antriebsvorsprünge nach radial außen vorstehen, während die Perforationsvorsprünge geneigt sind, oder umgekehrt.The perforation projections or the drive projections are advantageously at an angle in front of the respective roll surface. But it is also conceivable that, for example, the drive projections protrude radially outward, while the perforation projections are inclined, or vice versa.

Die Spitzen der Perforationsvorsprünge dringen zweckmäßigerweise im Sinne eines Reißens spitzwinklig in den Untergrund ein. Die Perforationsvorsprünge sind hierfür vorzugsweise gegen eine Laufrichtung der mindestens einen Perforationswalze in einem Eindringbereich in den Untergrund geneigt. Die Perforationsvorsprünge stechen sozusagen spitz in den Untergrund, beispielsweise die abzulösende Tapete, ein.The tips of the Perforationsvorsprünge penetrate expediently in the sense of a tearing at an acute angle into the ground. For this purpose, the perforation projections are preferably inclined against a running direction of the at least one perforation roller in an area of penetration into the ground. The Perforationsvorsprünge pierce so to speak, pointed into the ground, for example, the wallpaper to be detached.

Bei den Antriebsvorsprüngen ist eine umgekehrte Neigung vorteilhaft. Beispielsweise sind die Antriebsvorsprünge im Sinne eines Krallens mit der Laufrichtung der Antriebswalze in einem Eindringbereich in den Untergrund geneigt.In the drive projections, a reverse tilt is advantageous. For example, the drive projections are inclined in the sense of a claw with the direction of the drive roller in a penetration area in the ground.

Die Perforationsvorsprünge und die Antriebsvorsprünge sind zweckmäßigerweise gegensinnig schräg geneigt. Die Neigewinkel sind vorzugsweise identisch, sodass eine Perforationswalze gegen eine Antriebswalze und umgekehrt ausgetauscht werden kann. Zudem tritt beim Tausch der Walzen gegeneinander durch die gegensinnige Schrägposition ein Nachschärfeffekt auf.The Perforationsvorsprünge and the drive projections are suitably inclined in opposite directions. The tilt angles are preferably identical, so that a perforation roller can be exchanged for a drive roller and vice versa. In addition, occurs when exchanging the rollers against each other by the opposing oblique position a Nachschärfeffekt.

Die Perforationsvorsprünge oder die Antriebsvorsprünge können auf mannigfaltige Weise gebildet sein. Eine Ausgestaltung sieht beispielsweise vor, dass die Perforationsvorsprünge beziehungsweise die Antriebsvorsprünge an Scheibenelementen angeordnet sind. Die Scheibenelemente sind beispielsweise Stanz-Teile, lasergeschnittene Bauteile oder dergleichen.The perforation projections or the drive projections may be formed in a variety of ways. An embodiment provides, for example, that the perforation projections or the drive projections are arranged on disc elements. The disc elements are, for example, stamped parts, laser-cut components or the like.

Die Scheibenelemente sind zweckmäßigerweise auf einen Trägerstab oder eine Trägerwelle aufgereiht, wobei zwischen jeweils zwei Scheibenelementen vorzugsweise ein Distanzelement angeordnet ist. Dadurch entsteht eine sandwichartige Struktur.The disc elements are expediently lined up on a support rod or a carrier shaft, wherein between each two disc elements preferably a spacer element is arranged. This creates a sandwich-like structure.

Die Perforationswalze und die Antriebswalze haben vorteilhafterweise einen gleichen Außendurchmesser. Vorzugsweise sind die Perforationswalze und die Antriebswalze sogar baugleich, sodass sie im Verschleißfall ausgewechselt werden können.The perforation roller and the drive roller advantageously have a same outer diameter. Preferably, the perforation roller and the drive roller are even identical, so that they can be replaced in case of wear.

Zur Justierung der Eindringtiefe der Perforationsvorsprünge in den Untergrund ist vorzugsweise eine Tiefeneinstelleinrichtung vorgesehen. Diese hat beispielsweise eine Rolle, die zum Untergrund hin vor das Gestell vorsteht. Bevorzugt ist jedoch ein Gleitvorsprung. An dem Gleitvorsprung ist zweckmäßigerweise eine Gleitkufe angeordnet oder der Gleitvorsprung ist kufenartig ausgestaltet. Der Gleitvorsprung ist beispielsweise federnd. Beispielsweise ist der Gleitvorsprung gegen eine Tiefeneinstellschraube vorgespannt. Ein Ende des Gleitvorsprungs ist vorzugsweise beweglich an dem Gestell der Perforationsvorrichtung festgelegt.To adjust the penetration depth of the perforation projections into the ground, a depth adjustment device is preferably provided. This has, for example, a role that protrudes toward the ground in front of the frame. However, a sliding projection is preferred. At the sliding projection a skid is expediently arranged or the sliding projection is designed like a runner. The sliding projection is resilient, for example. For example, the sliding projection is biased against a Tiefeneinstellschraube. One end of the sliding projection is preferably fixed movably on the frame of the perforation device.

Bevorzugt ist es, wenn in Arbeits- oder Laufrichtung der Perforationsvorrichtung jeweils eine Perforationswalze hinter jeweils einer Antriebswalze angeordnet ist.It is preferred if in the working or running direction of the perforation device in each case a perforation roller is arranged behind each drive roller.

Bei einer erfindungsgemäßen Perforationsvorrichtung können unterschiedliche Gruppierungen von Antriebswalzen oder Perforationswalzen vorgesehen sein. Eine einfache Bauweise sieht vor, dass beispielsweise nur eine einzige Antriebswalze und nur eine einzige Perforationswalze vorhanden sind. Aber auch eine paarweise Anordnung von Perforations- und Antriebswalzen ist zweckmäßig.In a perforation device according to the invention, different groups of drive rollers or perforation rollers can be provided. A simple construction provides that, for example, only a single drive roller and only a single perforation roller are present. But even a pair of arrangement of perforation and drive rollers is appropriate.

Ferner ist es vorteilhaft, das Getriebe zentral zwischen den jeweiligen Walzen anzuordnen, beispielsweise zwischen zwei Antriebswalzen und/oder zwischen zwei Perforationswalzen.Furthermore, it is advantageous to arrange the transmission centrally between the respective rollers, for example between two drive rollers and / or between two perforation rollers.

Die Antriebswalzen und die Perforationswalzen stehen zweckmäßigerweise armartig von dem Gestell ab. Die gestellseitigen Endbereiche der jeweiligen Walzen sind drehbar an dem Gestell gelagert. Freie Enden stehen von dem Gestell ab.The drive rollers and the perforation rollers are expediently arm-like from the frame. The frame-side end portions of the respective rollers are rotatably mounted on the frame. Free ends protrude from the frame.

Zweckmäßig ist eine Bedienhandhabe, die zwischen dem jeweiligen Walzenpaar an dem Gestell fest oder gelenkig befestigt ist. Somit steht sozusagen im Zentrum der Perforationsvorrichtung eine Bedienhandhabe zur Verfügung.Appropriately, an operating handle which is fixed or hinged between the respective pair of rollers on the frame. Thus, as it were, an operating handle is available in the center of the perforation device.

Als Bedienhandhabe, die zentral oder an anderer Stelle am Gestell angeordnet sein kann, ist beispielsweise ein Handgriff oder Handknauf vorteilhaft. Aber auch eine Stange, insbesondere eine teleskopierbare Stange, ist als Bedienhandhabe vorteilhaft.As an operating handle, which can be arranged centrally or elsewhere on the frame, for example, a handle or hand knob is advantageous. But also a rod, in particular a telescopic rod, is advantageous as an operating handle.

Vorteilhafterweise ist die jeweilige Bedienhandhabe auswechselbar an dem Gestell befestigt. Somit ist es möglich, beispielsweise eine Handknauf-Bedienhandhabe gegen eine teleskopierbare Stange und umgekehrt auszutauschen.Advantageously, the respective operating handle is removably attached to the frame. Thus, it is possible, for example, a hand knob operating handle against a telescoping rod and vice versa to exchange.

Nachfolgend werden Ausführungsbeispiele der Erfindung anhand der Zeichnung erläutert. Es zeigen:

Figur 1
eine perspektivische Schrägansicht eines ersten Ausführungsbeispiels einer erfindungsgemäßen Perforationsvorrichtung,
Figur 2
eine Perforationseinheit der Perforationsvorrichtung gemäß Figur 1 mit einer teilweise entfernten Schutzabdeckung,
Figur 3
ein zweites Ausführungsbeispiel einer erfindungsgemäßen Perforationsvorrichtung ohne Schutzgehäuse, jedoch mit einem teleskopierbaren Stab,
Figur 4
eine Seitenansicht der Perforationsvorrichtung gemäß Figur 1, jedoch ohne Stab,
Figur 5
ein drittes Ausführungsbeispiel einer erfindungsgemäßen Perforationsvorrichtung mit einem Handknauf in perspektivischer Ansicht,
Figur 6
die Perforationsvorrichtung gemäß Figur 5 in Seitenansicht,
Figur 7
ein viertes Ausführungsbeispiel einer erfindungsgemäßen Perforationsvorrichtung mit einer Antriebsund einer Perforationswalze,
Figur 8
die Perforationsvorrichtung gemäß Figur 7 in Seitenansicht, und
Figur 9
eine Seitenansicht eines fünften Ausführungsbeispiels einer erfindungsgemäßen Perforationsvorrichtung mit Antriebs- und Perforationswalzen mit unterschiedlichen Durchmessern.
Hereinafter, embodiments of the invention will be explained with reference to the drawing. Show it:
FIG. 1
3 is an oblique perspective view of a first embodiment of a perforation device according to the invention,
FIG. 2
a perforation unit of the perforation according to FIG. 1 with a partially removed protective cover,
FIG. 3
A second embodiment of a perforation device according to the invention without protective housing, but with a telescoping rod,
FIG. 4
a side view of the perforation according to FIG. 1 but without staff,
FIG. 5
A third embodiment of a perforation device according to the invention with a hand knob in a perspective view,
FIG. 6
the perforation according to FIG. 5 in side view,
FIG. 7
A fourth embodiment of a perforation device according to the invention with a drive and a perforation roller,
FIG. 8
the perforation according to FIG. 7 in side view, and
FIG. 9
a side view of a fifth embodiment of a perforation device according to the invention with drive and perforation rollers with different diameters.

Bei den nachfolgenden Ausführungsbeispielen sind gleiche oder gleichartige Komponenten mit denselben Bezugszeichen versehen. Durch Kleinbuchstaben a, b, c und d werden ähnliche oder ähnlich wirkende Komponenten, die jedoch bei den Ausführungsbeispielen verschieden sind, gekennzeichnet.In the following embodiments, identical or similar components are provided with the same reference numerals. By lowercase letters a, b, c and d are similar or similarly acting components, but different in the embodiments, characterized.

Mit Perforationsvorrichtungen 10a, 10b, 10c und 10d kann ein Untergrund 11, der beispielsweise mit einer Tapete 12 oder einer sonstigen Oberflächenbeschichtung versehen ist, perforiert werden. Die Perforationsvorrichtungen 10a, 10b und 10c haben Walzenanordnungen 7a, 7b und 7c mit jeweils zwei Perforationswalzen 13a zum Perforieren des Untergrunds 11, während eine Walzenanordnung 7d der Perforationsvorrichtung 10d nur eine Perforationswalze 13b aufweist. Vor Walzenoberflächen 14a der Perforationswalzen 13a und Walzenoberflächen 14b der Perforationswalzen 13b stehen Perforationsvorsprünge 15b vor, die den Untergrund 11 perforieren und in die Tapete 12 eindringen, wenn die Perforationsvorrichtungen 10a-10d über den Untergrund 11 geführt werden und die Perforationswalzen 13a, 13b über den Untergrund 11 walzen.With perforation devices 10a, 10b, 10c and 10d, a substrate 11, which is provided, for example with a wallpaper 12 or other surface coating, perforated. The perforating devices 10a, 10b and 10c have roller assemblies 7a, 7b and 7c each having two perforating rollers 13a for perforating the base 11, while a roller assembly 7d of the perforating device 10d has only one perforating roller 13b. Before roll surfaces 14a of the perforation rolls 13a and roll surfaces 14b of the perforation rolls 13b are perforation projections 15b which perforate the substrate 11 and penetrate the wallpaper 12 when the perforators 10a-10d are passed over the ground 11 and the perforation rollers 13a, 13b over the ground 11 roll.

Die Walzenoberflächen 14a, 14b bilden Perforationswalzenbereiche 8a, 8b.The roll surfaces 14a, 14b form perforation roll areas 8a, 8b.

Nach dem erfindungsgemäßen Prinzip sind den Perforationswalzenbereichen 8a, 8b Antriebswalzenbereiche 9a, 9b zugeordnet, wobei die Walzenbereiche 8a, 8b bzw. 9a, 9b unterschiedliche Abrollgeschwindigkeiten auf dem Untergrund 11 aufweisen.According to the principle of the invention, the drive roller areas 9a, 9b are assigned to the perforation roller areas 8a, 8b, the roller areas 8a, 8b or 9a, 9b having different rolling speeds on the base 11.

Den Perforationswalzen 13a, 13b sind Antriebswalzen 16a, 16b zugeordnet, die die Perforationswalzen 13a, 13b über Getriebe 17 antreiben. Die Getriebe 17 sind beispielsweise durch Zahnriemengetriebe 18 gebildet.The perforation rollers 13a, 13b are associated with drive rollers 16a, 16b, which drive the perforation rollers 13a, 13b via gear 17. The gear 17 are formed for example by toothed belt transmission 18.

Bei den Perforationsvorrichtungen 10a-10d ist jeweils einer Perforationswalze 13a, 13b eine Antriebswalze 16a, 16b zugeordnet. Somit steht zum Antrieb einer jeweiligen Perforationswalze 13a oder 13b jeweils eine Antriebswalze 16a oder 16b zur Verfügung.In the case of the perforation devices 10a-10d, one drive roller 16a, 16b is assigned to each one perforation roller 13a, 13b. Thus stands for driving a respective perforation roller 13a or 13b each have a drive roller 16a or 16b available.

Die Antriebswalzen 16a, 16b haben Antriebsvorsprünge 19a, 19b, die vor ihre Walzenoberflächen 20a, 20b vorstehen. Die Walzenoberflächen 20a, 20b bilden die Antriebswalzenbereiche 9a, 9b.The drive rollers 16a, 16b have drive projections 19a, 19b projecting in front of their roller surfaces 20a, 20b. The roller surfaces 20a, 20b form the drive roller areas 9a, 9b.

Die Antriebsvorsprünge 19a, 19b verhaken oder verkrallen sich beim Walzen der Perforationsvorrichtungen 10a-10d über den Untergrund 11 in denselben ein, sodass die Antriebswalzen 16a, 16b Antriebskraft zum Antreiben der Perforationswalzen 13a, 13b aufnehmen können. Diese Antriebskraft überträgt das Getriebe 17 mit Hilfe eines Zahnriemens 21 auf die Perforationswalzen 13a, 13b. Der Zahnriemen 21 läuft über ein Antriebsrad 22, das mit den Antriebswalzen 16a, 16b drehgekoppelt ist, und ferner über ein Abtriebsrad 23, das mit den Perforationswalzen 13a, 13b drehgekoppelt ist. Eine Zahnung 24 auf der Innenseite der Zahnriemen 21 kämmt mit einer Zahnung 25 der Zahnriemenräder bildenden Antriebsräder 22 und Abtriebsräder 23. Der Zahnriemen 21 ist zwischen Führungsrändern 26 neben den Zahnungen 25 geführt, sodass er nicht von den Rädern 22, 23 abspringt.The drive projections 19a, 19b engage or dig into the perforation devices 10a-10d by rolling them over the substrate 11 so that the drive rollers 16a, 16b can receive driving force for driving the perforation rollers 13a, 13b. This drive force transmits the gear 17 by means of a toothed belt 21 on the perforation rollers 13a, 13b. The toothed belt 21 passes over a drive wheel 22, which is rotationally coupled to the drive rollers 16a, 16b, and further via a driven gear 23, which is rotationally coupled to the perforation rollers 13a, 13b. A toothing 24 on the inside of the toothed belt 21 meshes with a toothing 25 of the toothed belt wheels forming drive wheels 22 and output gears 23. The toothed belt 21 is guided between guide edges 26 adjacent to the serrations 25 so that it does not jump off the wheels 22, 23.

Die Antriebsräder 22 haben einen kleineren Durchmesser als die Abtriebsräder 23. Die Getriebe 17 bilden Untersetzungsgetriebe, das heißt, die Perforationswalzen 13a, 13b drehen beim Walzen der Perforationsvorrichtung 10 über den Untergrund 11 langsamer als die Antriebswalzen 16a, 16b. Somit erzeugen die Perforationsvorsprünge 15a, 15b langlochartige Perforationen. Die Perforationswalzen 13a, 13b reißen diese Langlöcher in den Untergrund 11.The drive wheels 22 are smaller in diameter than the driven wheels 23. The gears 17 constitute reduction gears, that is, the perforation rollers 13a, 13b rotate slower than the drive rollers 16a, 16b when rolling the perforator 10 over the ground 11. Thus, the perforation projections 15a, 15b create slot-like perforations. The perforation rollers 13a, 13b tear these elongated holes into the substrate 11.

Dieser Reißeffekt wird dadurch verstärkt, dass die Perforationsvorsprünge 15a, 15b und die Antriebsvorsprünge 19a, 19b schräg in den Untergrund 11 eindringen, und zwar gegensinnig schräg.This tearing effect is enhanced by the fact that the perforation projections 15a, 15b and the drive projections 19a, 19b obliquely penetrate into the substrate 11, in opposite directions obliquely.

Die Antriebsvorsprünge 19a, 19b sind krallenartig schräg bezüglich einer Laufrichtung 27 der Antriebswalzen 16a, 16b in einem Eindringbereich 28 der Antriebsvorsprünge 19a, 19b in den Untergrund 11 geneigt. Die Laufrichtung 27 ist die Drehrichtung der Antriebswalzen 16a, 16b beim Bewegen der Perforationsvorrichtungen 10a-10d in einer Arbeitsrichtung 29 über den Untergrund 11. Die Perforationsvorsprünge 15a, 15b sind gegensinnig zu den Antriebsvorsprüngen 19a, 19b geneigt. Spitzen 30 der Perforationsvorsprünge 15a, 15b dringen entgegen der Arbeitsrichtung 29 in den Untergrund 11 perforierend ein. Die Spitzen 30 sind entgegen einer Laufrichtung 31 der Perforationsvorsprünge 15a, 15b in ihrem jeweiligen Eindringbereich 32 in den Untergrund 11 geneigt.The drive projections 19a, 19b are inclined like a claw with respect to a running direction 27 of the drive rollers 16a, 16b in a penetration region 28 of the drive projections 19a, 19b in the ground 11 inclined. The running direction 27 is the direction of rotation of the drive rollers 16a, 16b when moving the perforation devices 10a-10d in a working direction 29 via the substrate 11. The perforation projections 15a, 15b are inclined in opposite directions to the drive projections 19a, 19b. Tips 30 of the perforation projections 15a, 15b penetrate counter to the working direction 29 in the substrate 11 perforating. The tips 30 are inclined against a running direction 31 of the perforation projections 15a, 15b in their respective penetration region 32 into the substrate 11.

Die Antriebswalzen 16a, 16b und die Perforationswalzen 13a, 13b drehen gleichsinnig. Somit sind die Laufrichtungen 27, 31 gleichsinnig. In diesem Zusammenhang sei betont, dass bei erfindungsgemäßen Perforationsvorrichtungen die Perforationswalzen und die Antriebswalzen auch eine gegensinnige Drehung durchführen können, wenn das jeweilige Getriebe die Drehrichtung umkehrt.The drive rollers 16a, 16b and the perforation rollers 13a, 13b rotate in the same direction. Thus, the directions of rotation 27, 31 are in the same direction. In this context, it should be emphasized that in perforation devices according to the invention, the perforation rollers and the drive rollers can also perform an opposite rotation when the respective gear reverses the direction of rotation.

Es versteht sich, dass auch nicht schräg geneigte Antriebs- und Perforationsvorsprünge möglich sind. Beispielsweise sind Antriebsvorsprünge 33 möglich, deren Spitzen nach radial außen vor die Walzenoberflächen 20a vorstehen.It is understood that not obliquely inclined drive and Perforationsvorsprünge are possible. For example, drive projections 33 are possible, whose tips protrude radially outward in front of the roller surfaces 20a.

Die Neigungswinkel oder Schrägstellwinkel der Antriebsvorsprünge 19a, 19b und der Perforationsvorsprünge 15a, 15b sind gleich. Dies ist beispielsweise dadurch bewirkt, dass die Perforationswalze 13a und die Antriebswalze 16a sowie die Perforationswalze 13b und die Antriebswalze 16b baugleich sind und somit gegeneinander ausgetauscht werden können, was den Verschleiß minimiert und zudem einen gewissen Nachschärfeffekt für die Spitzen 30 hat.The inclination angles or inclination angles of the drive projections 19a, 19b and the perforation projections 15a, 15b are equal. This is effected, for example, in that the perforation roller 13a and the drive roller 16a and the perforation roller 13b and the drive roller 16b are identical in construction and thus can be interchanged, which minimizes wear and also has a certain re-sharpening effect for the tips 30.

Da die Walzen 13a, 16a einerseits und 13b, 16b andererseits jeweils baugleich sind, werden nachfolgend nur die Perforationswalzen 13a, 13b erläutert:Since the rollers 13a, 16a on the one hand and 13b, 16b on the other hand are of identical construction, only the perforation rollers 13a, 13b are explained below:

Bei den Perforationswalzen 13a sind Scheibenelemente 34, vor deren Außenumfang die Perforationsvorsprünge 15a vorstehen, unter Zwischenschaltung von jeweils einem Distanzelement 35 auf einen Trägerstab 36 aufgereiht. Die Scheibenelemente 34 sind beispielsweise Stanzteile aus Blech. Die Distanzelemente 35 sind beispielsweise Kunststoff- oder Gummischeiben, die einen Abstand zwischen den Scheibenelementen 34 definieren. Jeweils zwei neben einem Distanzelement 35 anliegende Scheibenelemente 34 weisen einen Drehversatz auf, derart, dass in einem Abstand zwischen zwei Perforationsvorsprüngen 15a des einen Scheibenelements in Umfangsrichtung gesehen ein Perforationsvorsprung 15a des anderen Scheibenelements 34 positioniert ist. Die Scheibenelemente 34, zweckmäßigerweise auch die Distanzelemente 35, sind verdrehsicher auf dem Trägerstab 36 angeordnet. Hierzu weist der Trägerstab 36 beispielsweise eine polygonale, insbesondere sechseckige, Außenkontur auf, die mit einer Innenkontur von Durchgangsöffnungen (nicht dargestellt) der Scheibenelemente 34 und der Distanzelemente 35 korreliert.In the perforation rollers 13a disc elements 34, in front of the outer periphery of the perforation projections 15a project, lined up with the interposition of a respective spacer element 35 on a support rod 36. The disk elements 34 are punched parts made of sheet metal, for example. The spacer elements 35 are for example plastic or rubber discs, which define a distance between the disc elements 34. In each case two adjoining a spacer element 35 disc elements 34 have a rotational offset, such that, seen in the circumferential direction, a perforation projection 15a of the other disc element 34 is positioned at a distance between two perforation projections 15a of a disc element. The disc elements 34, expediently also the spacer elements 35, are arranged on the carrier bar 36 so as to be secure against rotation. For this purpose, the carrier bar 36 has, for example, a polygonal, in particular hexagonal, outer contour, which correlates with an inner contour of passage openings (not shown) of the disc elements 34 and the spacer elements 35.

Die sandwichartig aufgereihten Scheibenelemente 34 und Distanzelemente 35 werden beispielsweise durch eine Schraube 39 an dem Trägerstab 36 fixiert, die an ein freies Ende des Trägerstabs 36 vorzugsweise unter Zwischenlage einer Unterlegscheibe aufgeschraubt ist.The sandwiched disc elements 34 and spacers 35 are fixed, for example, by a screw 39 on the support rod 36, which at a free end of the Support rod 36 is preferably screwed with the interposition of a washer.

Die Perforationsvorsprünge 15b der Perforationswalzen 13b sind beispielsweise in eine Basis-Walze 37 eingesetzte Krallen- oder Dornstücke 38. Die Basis-Walze 37 besteht beispielsweise aus Kunststoff, die Krallenstücke 38 bestehen aus Metall. Selbstverständlich können die Krallenstücke 38 auch an die Basis-Walze 37 angeformt sein.The perforation projections 15b of the perforation rollers 13b are, for example, claw or mandrel pieces 38 inserted into a base roller 37. The base roller 37 is made of plastic, for example, and the claw pieces 38 are made of metal. Of course, the claw pieces 38 may also be integrally formed on the base roller 37.

Die Perforationswalzen 13a, 13b und die Antriebswalzen 16a, 16b sind an Gestellen 40a, 40b, 40c und 40d der Perforationsvorrichtungen 10a-10d drehbar gelagert. Dabei sind unterschiedliche Bauformen möglich:The perforation rollers 13a, 13b and the drive rollers 16a, 16b are rotatably mounted on racks 40a, 40b, 40c and 40d of the perforation devices 10a-10d. Different types are possible:

Bei den Gestellen 40a-40c stehen Walzenpaare bestehend aus jeweils einer Antriebswalze 16a und einer Perforationswalze 13a an einander entgegengesetzten Seiten vor die Gestelle 40a-40c vor. Die Walzen 13a, 16a stehen armartig vor die Gestelle 40a, 40b und 40c vor. Die Walzen 13a, 16a sind um Drehachsen 41, 42 drehbar an den Gestellen 40a, 40b und 40c gelagert. Die Drehachsen 41, 42 sind vorliegend parallel, wobei prinzipiell auch eine Schrägstellung der einen oder anderen Drehachse 41 oder 42 möglich ist.In the racks 40a-40c, roller pairs consisting of a respective drive roller 16a and a perforation roller 13a are provided on opposite sides in front of the racks 40a-40c. The rollers 13a, 16a are arm-like in front of the frames 40a, 40b and 40c. The rollers 13a, 16a are rotatably mounted about axes of rotation 41, 42 on the racks 40a, 40b and 40c. In the present case, the axes of rotation 41, 42 are parallel, with an inclination of one or the other axis of rotation 41 or 42 being possible in principle.

Ferner sind V-förmige Schrägstellungen beispielsweise zwischen Antriebswalzen eines Antriebswalzenpaars und/oder Perforationswalzen eines Perforationswalzenpaars möglich.Furthermore, V-shaped inclinations are possible, for example, between drive rollers of a drive roller pair and / or perforation rollers of a perforation roller pair.

Die Trägerstäbe 36 bilden Achswellen 43, die mit den Antriebsrädern 22 und Abtriebsrädern 23 der Getriebe 17 drehfest verbunden sind. Beispielsweise sind die Räder 22, 23 auf den Achswellen 43 angeordnet oder die Achswellen 43 stehen seitlich vor die Räder 22, 23 vor. Zweckmäßigerweise ist ein Distanzelement 44 zwischen einem jeweiligen Rad 22 oder 23 und dem benachbarten ersten Perforationsvorsprünge 15a aufweisenden Scheibenelement 34 angeordnet.The support rods 36 form axle shafts 43, which are rotatably connected to the drive wheels 22 and output gears 23 of the gear 17. For example, the wheels 22, 23 are arranged on the axle shafts 43 or the axle shafts 43 project laterally in front of the wheels 22, 23. Conveniently, a Spacer 44 between a respective wheel 22 or 23 and the adjacent first perforation projections 15a having disc element 34 is arranged.

Das Gestell 40a enthält ein Gehäuse 45, in dessen Innenraum das Getriebe 17 geschützt angeordnet ist. Das Gehäuse 45 weist beispielsweise eine Verstärkungsrippenstruktur auf. Das Gehäuse 45 ist beispielsweise durch zwei Gehäuseteile 46 gebildet (in Figur 2 ist nur ein Gehäuseteil 46 sichtbar), die durch in Schraubdome 47 eingeschraubte Schrauben miteinander verbunden sind.The frame 40a includes a housing 45, in the interior of the gear 17 is arranged protected. The housing 45 has, for example, a reinforcing rib structure. The housing 45 is formed for example by two housing parts 46 (in FIG. 2 only one housing part 46 is visible), which are connected to each other by screwed in Schraubdome 47 screws.

Schutzabdeckungen 48 überdecken die Walzen 13a, 16a der Perforationsvorrichtung 10a. Die Schutzabdeckungen 48 sind beispielsweise integrale Bestandteile des Gehäuses 45 oder am Gestell 40a befestigte Abdeckhaubenteile. Die Schutzabdeckungen 48 verringern ein Verletzungsrisiko. Die Schutzabdeckungen 48 überdecken die Oberseiten der Walzen 13a, 16a und reichen bis zu deren jeweiligen freien Enden vor.Protective covers 48 cover the rollers 13a, 16a of the perforating device 10a. The protective covers 48 are, for example, integral components of the housing 45 or cover hood parts fastened to the frame 40a. The protective covers 48 reduce the risk of injury. The protective covers 48 cover the tops of the rollers 13a, 16a and extend to their respective free ends.

In einem Bereich zwischen den Schutzabdeckungen 48 und dem Basis-Gehäuse 45 sind Ausnehmungen 49 vorgesehen, die von einer Bedienhandhabe 50a durchgriffen werden. Die Bedienhandhabe 50a ist beispielsweise eine Stange 51a.In a region between the protective covers 48 and the base housing 45 recesses 49 are provided, which are penetrated by an operating handle 50a. The operating handle 50a is, for example, a rod 51a.

Die Stange 51a ist vorzugsweise schwenkbeweglich an dem Gestell 40a gelagert. Beispielsweise ist das vordere Ende der Stange 51a an einem Schwenklager 52 des Gestells 40a schwenkbar gelagert. Lagerarme 53 am vorderen Ende der Stange 51a durchgreifen die Ausnehmungen 49 und sind schwenkbeweglich an dem Schwenklager 52 befestigt. Am freien Ende des Stabes 51a ist ein Handgriff 54 vorteilhaft.The rod 51a is preferably pivotally mounted on the frame 40a. For example, the front end of the rod 51a is pivotally mounted on a pivot bearing 52 of the frame 40a. Bearing arms 53 at the front end of the rod 51 a pass through the recesses 49 and are pivotally mounted on the pivot bearing 52. At the free end of the rod 51 a, a handle 54 is advantageous.

Die Bedienhandhabe 50a ist in einem Zentrum zwischen den Walzen 13a, 16a angeordnet, sodass eine maximale Krafteinleitung durch einen Benutzer der Perforationsvorrichtung 10a möglich ist.The operating handle 50a is arranged in a center between the rollers 13a, 16a, so that a maximum force application by a user of the perforating device 10a is possible.

Mit Hilfe einer Tiefeneinstelleinrichtung 55a ist eine Eindringtiefe der Perforationsvorsprünge 15a einstellbar. Eine Gleitkufe 56, die nach unten vor das Gestell 40a vorsteht, hat federnde Halteabschnitte 57, die am Gehäuse 45 unten festgelegt, beispielsweise festgeklebt oder mit Bohrungen 58 durchdringenden, nicht dargestellten Schrauben angeschraubt ist. Die Gleitkufe 56 sowie die Halteabschnitte 57 werden zweckmäßigerweise durch ein Stanz-Biegeteil gebildet, das an sich federnd ist. Die Gleitkufe 56 hat durch die federnden Halteabschnitte 57 das Bestreben, in Richtung des Gestells 40a beziehungsweise des Gehäuses 45 zu federn.With the aid of a depth adjustment device 55a, a penetration depth of the perforation projections 15a is adjustable. A skid 56 which protrudes downwardly in front of the frame 40a, has resilient holding portions 57 which are fixed to the housing 45 below, for example, glued or screwed with holes 58 penetrating, not shown screws. The skid 56 and the holding portions 57 are suitably formed by a stamped and bent part, which is resilient to itself. The skid 56 has through the resilient holding portions 57 the effort to spring in the direction of the frame 40 a and 45 of the housing.

Die Gleitkufe 56 steht abhängig von der Linearposition einer Schraube 59 oder einer sonstigen Längsverstelleinrichtung mehr oder weniger weit nach unten vor das Gestell 40a und den Walzenumfang der Perforationswalze 13a vor und beeinflusst so die Eindringtiefe der Perforationsvorsprünge 15a. Die Schraube 59 ist beispielsweise schräg an dem Gestell 40a drehbar gelagert. Die Schraube 59 hat zweckmäßigerweise einen Bedienhandgriff 60 und verlagert die Gleitkufe 56, die einen Gleitvorsprung bildet, zum Untergrund 11 hin. Die Schraube 59 dient zur Tiefenverstellung der Gleitkufe 56 entgegen der Federkraft der Halteabschnitte 57.The skid 56 is depending on the linear position of a screw 59 or other Längsverstelleinrichtung more or less far down in front of the frame 40a and the roller circumference of the perforation roller 13a and thus influences the penetration depth of the perforation projections 15a. The screw 59 is for example mounted at an angle to the frame 40a rotatably. The screw 59 expediently has an operating handle 60 and displaces the skid 56, which forms a sliding projection, toward the base 11. The screw 59 serves for depth adjustment of the skid 56 against the spring force of the holding portions 57th

Die Perforationsvorrichtung 10b hat als eine Bedienhandhabe 50b eine teleskopierbare Stange 51b. Ein oberes Stangenteil 61 und ein unteres Stangenteil 62 sind relativ zueinander längsverschieblich und mit einer Feststelleinrichtung 63 relativ zueinander festlegbar.The perforator 10b has as an operating handle 50b a telescoping rod 51b. An upper rod portion 61 and a lower rod portion 62 are longitudinally displaceable relative to each other and with a locking device 63 relative to each other can be fixed.

Die Stange 51b ist mit einem Schwenklager 52b schwenkbeweglich an dem Gestell 40b gelagert. Das Schwenklager 52b enthält einen nach oben vor das Gestell 40b vorstehenden Lagerkopf 64, an dem Arme 65 am vorderen Ende der Stange 51b schwenkbeweglich um eine Drehachse 66 schwenkbar gelagert sind. Die Drehachse 66 befindet sich in einer zu den Drehachsen der Walzen 13a, 16a parallelen Ebene. Senkrecht zu dieser Ebene verläuft eine optionale Drehachse 67, wenn der Lagerkopf 64 schwenkbeweglich am Gestell 40b gelagert ist. Dann ist das Schwenklager 52b ein Schwenklager in der Art eines Kardangelenks oder eines Kardan-Schwenklagers.The rod 51b is pivotally mounted on the frame 40b with a pivot bearing 52b. The pivot bearing 52b includes a bearing head 64 protruding upward in front of the frame 40b, on which arms 65 are pivotally supported at the front end of the rod 51b so as to be pivotable about an axis of rotation 66. The axis of rotation 66 is in a plane parallel to the axes of rotation of the rollers 13a, 16a. Perpendicular to this plane extends an optional axis of rotation 67 when the bearing head 64 is pivotally mounted on the frame 40b. Then, the pivot bearing 52b is a pivot bearing in the manner of a universal joint or a cardan pivot bearing.

Das Gestell 40b ist verhältnismäßig einfach aufgebaut. Es enthält beispielsweise ein Gestellteil 68 mit Gabelenden 69, zwischen deren Armen 70 das Antriebsrad 22 und am anderen Ende das Antriebsrad 23 drehbar aufgenommen sind. Die Walzen 13a, 16a sind ebenfalls an den Armen 70 drehbar gelagert, wobei Achswellen die Arme 70 durchdringen und mit den Rädern 22, 23 drehgekoppelt sind. Die Walzen 13a, 16a stehen seitlich von dem Gestell 40b ab.The frame 40b is relatively simple. It includes, for example, a frame part 68 with fork ends 69, between the arms 70, the drive wheel 22 and at the other end the drive wheel 23 are rotatably received. The rollers 13a, 16a are also rotatably mounted on the arms 70, wherein axle shafts penetrate the arms 70 and are rotationally coupled to the wheels 22, 23. The rollers 13a, 16a are laterally from the frame 40b.

Das Gestell 40b ist beispielsweise ein Gussteil aus Kunststoff oder Metall. Eine Schwenklagerhalterung 71 zum Halten des Lagerkopfes 64 sitzt reiterartig auf dem Gestellteil 68, sodass in einem Zwischenraum zwischen der Schwenklagerhalterung 71 und dem Gestellteil 68 der Zahnriemen 21 verlaufen kann.The frame 40b is, for example, a casting made of plastic or metal. A pivot bearing holder 71 for holding the bearing head 64 sits like a rider on the frame part 68, so that in a space between the pivot bearing holder 71 and the frame part 68 of the toothed belt 21 can extend.

Ein ähnliches Befestigungskonzept ist auch bei einer Bedienhandhabe 50c der Perforationsvorrichtung 10c realisiert. Die Bedienhandhabe 50c wird durch einen Handgriff 72 gebildet, der beispielsweise als ein Bedienknauf 73 ausgestaltet ist. Es versteht sich, dass auch alternative Handgriffe denkbar sind, beispielsweise bügelartige Handgriffe oder dergleichen.A similar fastening concept is also realized with an operating handle 50c of the perforation device 10c. The operating handle 50c is formed by a handle 72, which is designed, for example, as an operating knob 73. It is understood that alternative handles are conceivable, for example, bow-like handles or the like.

Der Handgriff 72 ist an Haltevorsprüngen 74 befestigt, beispielsweise angeschraubt, die seitlich am Gestellteil 68c des Gestells 40c an entgegengesetzten Seiten vorstehen. Das Gestellteil 68c hat wie das Gestellteil 68 gabelförmige Enden, an denen die Räder 22, 23 des Getriebes 17 drehbar gelagert sind. Der Zahnriemen 21 verläuft unterhalb des Bedienknaufs 73 in einem Abstand zwischen dem Bedienknauf 73 und dem Gestellteil 68c. Der Handgriff 72 sitzt sozusagen reiterartig auf dem Gestellteil 68c.The handle 72 is attached to retaining projections 74, for example screwed, projecting laterally on the frame part 68c of the frame 40c on opposite sides. The frame part 68c has like the frame part 68 fork-shaped ends on which the wheels 22, 23 of the transmission 17 are rotatably mounted. The toothed belt 21 extends below the operating knob 73 at a distance between the operating knob 73 and the frame part 68c. The handle 72 sits as it were like a rider on the frame part 68c.

Die Zahnriemen 21 verlaufen um die Gestelle 40a, 40c herum.The toothed belts 21 extend around the frames 40a, 40c.

Eine Tiefeneinstelleinrichtung 55c der Perforationsvorrichtung 10c hat ein ähnliches Konzept wie die Tiefeneinstelleinrichtung 55a. Eine Stellschraube 59c ist an dem Gestell 40c längsverstellbar und wirkt mit ihrem vorderen, freien Ende auf eine Gleitkufe 56c. Die Gleitkufe 56c ist mit Halteabschnitten 57c federnd an der Unterseite des Gestells 40c festgelegt. In Figur 6 ist mit durchgezogenen Linien eine obere Tiefeneinstellung der Tiefeneinstelleinrichtung 55c dargestellt, die ein tieferes Eindringen der Perforationsvorsprünge 15a zulässt als eine in gestrichelten Linien gezeichnete tiefere Stellung der Tiefeneinstelleinrichtung 55c.A depth adjuster 55c of the perforator 10c has a similar concept as the depth adjuster 55a. An adjusting screw 59c is longitudinally adjustable on the frame 40c and acts with its front, free end on a skid 56c. The skid 56c is fixed with retaining portions 57c resiliently on the underside of the frame 40c. In FIG. 6 is shown with solid lines, an upper depth adjustment of the depth adjustment 55c, which allows a deeper penetration of the perforation projections 15a as a dashed lines drawn lower position of the Tiefeneinstelleinrichtung 55c.

Ein Gestell 40d der Perforationsvorrichtung 10d hat zwei Seitenteile 75, 76, an denen die Perforationswalze 13b und die Antriebswalze 16b drehbar gelagert sind. Beispielsweise haben die Seitenteile 75, 76 Lagerausnehmungen oder Lagerbohrungen (nicht sichtbar) für Achswellen 77, 78 der Walzen 13b, 16b. Die Achswellen 77, 78 stehen seitlich vor eine Außenseite des Seitenteils 76 vor, wobei an den vorstehenden Abschnitten der Achswellen 77, 78 die Räder 22, 23 angeordnet sind. Die beiden Seitenteile 75, 76 sind durch einen Querträger 79, der zwischen den Walzen 13b, 16b an der Oberseite des Gestells 40d verläuft, miteinander verbunden.A frame 40d of the perforator 10d has two side portions 75, 76 on which the perforating roller 13b and the drive roller 16b are rotatably supported. For example, the side parts 75, 76 have bearing recesses or bearing bores (not visible) for axle shafts 77, 78 of the rollers 13b, 16b. The axle shafts 77, 78 protrude laterally in front of an outer side of the side part 76, wherein the wheels 22, 23 are arranged on the projecting portions of the axle shafts 77, 78. The two side parts 75, 76 are by a cross member 79, which extends between the rollers 13b, 16b at the top of the frame 40d, connected to each other.

Die Perforationsvorsprünge 15b und die Antriebsvorsprünge 19b sind gegensinnig schräg, wobei die Antriebsvorsprünge 19b im Sinne eines Krallens schräg geneigt sind, während die Perforationsvorsprünge 15b im Sinne eines Krallens schräg stehen.The perforation projections 15b and the drive projections 19b are inclined in opposite directions, wherein the drive projections 19b are obliquely inclined in the sense of a claw, while the perforation projections 15b are inclined in the sense of a claw.

An dem Querträger 79 kann eine Bedienhandhabe, beispielsweise in der Art des Handgriffes 72 oder beispielsweise auch ein Bügel, befestigt werden.On the cross member 79, an operating handle, for example in the manner of the handle 72 or, for example, a bracket, are attached.

Eine Perforationsvorrichtung 10e ist teilweise gleichartig aufgebaut wie die Perforationsvorrichtung 10a, das heißt sie hat vor ein Gestell 40e jeweils seitlich vorstehende Perforationswalzen 13e und Antriebswalzen 16e. Im Unterschied zu der Perforationsvorrichtung 10a haben die Walzen 13e, 16e jedoch unterschiedliche Durchmesser. Die Perforationswalzen 13e sind die kleineren Walzen.A perforation device 10e is partially similar in construction to the perforation device 10a, that is to say it has, in front of a frame 40e, laterally projecting perforation rollers 13e and drive rollers 16e. In contrast to the perforation device 10a, however, the rollers 13e, 16e have different diameters. The perforating rollers 13e are the smaller rollers.

Die Walzen 13e, 16e sind über ein Getriebe 17e miteinander bewegungsgekoppelt. Das Getriebe 17e ist ein Zahnriemengetriebe 18e mit einem Übersetzungsverhältnis 1:1. Ein Zahnriemen 21e koppelt die Walzen 13e, 16e der Walzenanordnung 7e.The rollers 13e, 16e are coupled to each other in motion via a gear 17e. The transmission 17e is a toothed belt transmission 18e with a gear ratio of 1: 1. A toothed belt 21e couples the rollers 13e, 16e of the roller assembly 7e.

Unterschiedliche Abrollgeschwindigkeiten von Perforationswalzenbereichen 8e an den Perforationswalzen 13e gegenüber Antriebswalzenbereichen 9e der Antriebswalzen 16e werden durch deren jeweils unterschiedliche Durchmesser bewirkt. Die Perforationswalzen 13e rollen langsamer auf dem Untergrund 11 ab als die Antriebswalzen 16e der Walzenanordnung 7e.Different unwinding speeds of perforation roller areas 8e on the perforation rollers 13e relative to drive roller areas 9e of the drive rollers 16e are caused by their respective different diameters. The perforation rollers 13e roll more slowly on the substrate 11 than the drive rollers 16e of the roller assembly 7e.

Claims (23)

  1. Perforation device for perforating a background (11), in particular a wallpaper (12), with a roller arrangement (7a - 7e) with pointed perforation projections (15a; 15b; 15e) projecting from a roller upper surface (14a; 14b; 14e) of a perforation roller area (8a - 8e) for perforating the background (11), characterised in that the roller arrangement (7a - 7e) comprises at least one drive roller area (9a - 9e) for driving the perforation roller area (8a - 8e) in a rotating manner, and that the at least one perforation roller area (8a - 8e) and the at least one drive roller area (9a - 9e) have different rolling speeds on the background (11) so that the perforation roller area (8a - 8e) perforates the background (11) in a tearing manner, that the at least one perforation roller area (8a - 8e) is provided with at least one perforation roller (13a; 13b; 13e), and that the at least one drive roller area (9a - 9e) is provided with at least one drive roller (16a; 16b; 16e) for driving the perforation roller (13a; 13b; 13e) in a rotating manner, and that the at least one drive roller (16a; 16b; 16e) is coupled to move with the at least one perforation roller (13a; 13b; 13e), that the at least one perforation roller (13a; 13b; 13e) and the at least one drive roller (16a; 16b; 16e) are pivoted on a frame (40a; 40b; 40c; 40d) to roll next to each other on the background (11), and that the at least one drive roller (16a; 16b; 16e) comprises drive projections (19a; 19b; 33; 19e) projecting from a roller upper surface (20a; 20b; 20e).
  2. Perforation device according to claim 1, characterised in that the at least one perforation roller (13a; 13b; 13e) is coupled with the at least one drive roller (16a; 16b; 16e) by a transmission (17; 17e).
  3. Perforation device according to claim 2, characterised in that the transmission (17; 17e) is a reduction gear unit so that the at least one perforation roller (13a; 13b; 13e) rotates more slowly than the at least one drive roller (16a; 16b; 16e).
  4. Perforation device according to claim 2 or 3, characterised in that that the transmission (17; 17e) is a belt drive, in particular a toothed belt drive.
  5. Perforation device according to one of the foregoing claims, characterised in that the diameter of the at least one perforation roller (13a; 13b; 13e) is smaller than that of the at least one drive roller (16a; 16b; 16e).
  6. Perforation device according to one of the foregoing claims, characterised in that the perforation projections (15a; 15b; 15e) and the drive projections (19a; 19b; 33; 19e) are geometrically identical or similar.
  7. Perforation device according to one of the foregoing claims, characterised in that the perforation projections (15a; 15b; 15e) and / or the drive projections (19a; 19b; 33; 19e) comprise spikes.
  8. Perforation device according to one of the foregoing claims, characterised in that the perforation projections (15a; 15b; 15e) and / or the drive projections (19a; 19b; 33; 19e) project obliquely from the respective roller upper surface (14a; 14b; 14e).
  9. Perforation device according to claim 7, characterised in that the perforation projections (15a; 15b; 15e) are inclined away from a direction of travel of the at least one perforation roller (13a; 13b; 13e) in a penetration area into the background (11).
  10. Perforation device according to claim 8 or 9, characterised in that the drive projections (19a; 19b; 33; 19e) are inclined in the sense of a claw with the direction of travel of the drive roller (16a; 16b; 16e) in a penetration area into the background (11).
  11. Perforation device according to one of claims 8 to 10, characterised in that the perforation projections (15a; 15b; 15e) and the drive projections (19a; 19b; 33; 19e) are inclined obliquely in a counter-rotating direction.
  12. Perforation device according to one of the foregoing claims, characterised in that the outer diameters of the at least one perforation roller (13a; 13b; 13e) and the at least one drive roller (16a; 16b; 16e) are identical.
  13. Perforation device according to one of the foregoing claims, characterised in that the construction of the at least one perforation roller (13a; 13b; 13e) and the at least one drive roller (16a; 16b; 16e) is identical.
  14. Perforation device according to one of the foregoing claims, characterised in that the perforation projections (15a; 15b; 15e) and / or the drive projections (19a; 19b; 33; 19e) are arranged on disc elements (34).
  15. Perforation device according to claim 14, characterised in that the disc elements (34) are arranged in a row on a carrier shaft (36) and a distancing element (35) is arranged sandwiched between every two disc elements (34).
  16. Perforation device according to one of the foregoing claims, characterised in that it comprises a depth adjustment device (55a; 55c) to adjust the penetration depth of the perforation projections (15a; 15b; 15e).
  17. Perforation device according to claim 16, characterised in that the depth adjustment device (55a; 55c) comprises a sliding projection, in particular a sliding shoe (56).
  18. Perforation device according to claim 17, characterised in that the sliding projection is spring-loaded.
  19. Perforation device according to claim 17 or 18, characterised in that the sliding projection is movably secured to one end of the frame (40a; 40b; 40c; 40d).
  20. Perforation device according to one of the foregoing claims, characterised in that it comprises at least two drive rollers (16a; 16b; 16e) or at least two perforation rollers (13a; 13b; 13e) and that the transmission (17; 17e) is arranged between the respective pairs of rollers.
  21. Perforation device according to one of the foregoing claims, characterised in that two drive rollers (16a; 16b; 16e) and two perforation rollers (13a; 13b; 13e) extend in an arm-like fashion out from the frame (40a; 40b; 40c; 40d) on opposite sides.
  22. Perforation device according to one of the foregoing claims, characterised in that it comprises an operator's handle (50a; 50b; 50c) which comprises a hand grip (72), in particular an operating knob (73) or an in particular telescopic rod (51 a; 51 b).
  23. Perforation device according to claim 22, characterised in that the operator's handle (50a; 50b; 50c) is attached either fixed or articulated between the respective pairs of rollers on the frame (40a; 40b; 40c; 40d).
EP20080003852 2007-05-19 2008-03-01 Perforation device Active EP1995077B8 (en)

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Publication number Priority date Publication date Assignee Title
DE2534907A1 (en) 1975-08-05 1977-02-17 Maximilian Zitzelsberger Plaster surface finish stripper - has one of two parallel rollers rotatable with scraper wedges
DE8014118U1 (en) * 1980-05-24 1980-08-28 Bonumwerke Tigges & Winckel Gmbh & Co Kg, 5620 Velbert DEVICE FOR PERFORATING WALLPAPERS INTENDED FOR REMOVAL
DE8217780U1 (en) * 1982-06-22 1982-09-09 HEBRU Gardinenland Brunnemer GmbH, 6741 Hochstadt DEVICE FOR PERFORATING WALLS INTENDED FOR DETACHING
DE4323580C1 (en) * 1993-07-14 1995-03-23 Elias Lebessis Tear tool
DE29816176U1 (en) * 1998-09-09 1998-12-24 Boenke, Fabian, 40231 Düsseldorf Device for pretreating the surface of a wallpaper to be removed

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EP1995077B8 (en) 2012-12-26
DE102007023477B3 (en) 2009-01-22
EP1995077A1 (en) 2008-11-26

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