EP3771534A1 - Roller cutter with interchangeable blade - Google Patents
Roller cutter with interchangeable blade Download PDFInfo
- Publication number
- EP3771534A1 EP3771534A1 EP20182874.6A EP20182874A EP3771534A1 EP 3771534 A1 EP3771534 A1 EP 3771534A1 EP 20182874 A EP20182874 A EP 20182874A EP 3771534 A1 EP3771534 A1 EP 3771534A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- handle
- blade holder
- rotary cutter
- rotary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000007787 solid Substances 0.000 claims abstract description 7
- 239000003086 colorant Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 9
- 208000027418 Wounds and injury Diseases 0.000 abstract description 6
- 208000014674 injury Diseases 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 210000003811 finger Anatomy 0.000 description 1
- 210000005224 forefinger Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B25/00—Hand cutting tools involving disc blades, e.g. motor-driven
- B26B25/005—Manually operated, e.g. pizza cutters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25G—HANDLES FOR HAND IMPLEMENTS
- B25G1/00—Handle constructions
- B25G1/10—Handle constructions characterised by material or shape
- B25G1/102—Handle constructions characterised by material or shape the shape being specially adapted to facilitate handling or improve grip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B29/00—Guards or sheaths or guides for hand cutting tools; Arrangements for guiding hand cutting tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B29/00—Guards or sheaths or guides for hand cutting tools; Arrangements for guiding hand cutting tools
- B26B29/06—Arrangements for guiding hand cutting tools
Definitions
- the invention relates to a rotary cutter with a replaceable blade.
- Rotary cutters which are used to cut various types of materials, in particular for cutting textile materials, for example for hand-made items of clothing.
- Such handheld rotary cutters typically include a handle and a round blade disposed on the handle.
- Rotary cutters with exchangeable blades are already known, namely from the documents U.S. 6,438,850B2 , U.S. 5,144,749 A , WO2009 / 091697 A2 and EP 1 525 959 B1 . All known rotary cutters have the disadvantage that when the blade is changed, contact with the blade edge is possible and there is therefore a risk of injury.
- the object of the present invention is to provide an improved rotary cutter with a replaceable blade, which enables the blade to be replaced easily with a low risk of injury and which can be used in a variety of ways.
- This new rotary cutter with exchangeable blade has a handle for the user of the rotary cutter. At one end of the handle, the holding area, the handle is connected to a blade holder which comprises a blade.
- the connection between the handle and the blade holder is detachable, which enables the blade holder and thus the blade mounted in the blade holder to be changed.
- the blade holder represents a solid sheath for the blade and holds at least half of the blade in the receiving space of this sheath.
- the shape of the solid sheath of the blade holder is chosen so that the blade is between the two semicircular side walls the sheath is arranged and these semicircular side walls cover the blade on both sides.
- the blade edge is protected by the curved outer wall of the sheath of the blade holder.
- the course of the outer wall is adapted to the radial course of the blade edge so that on the one hand the blade mounted in the blade holder can be freely rotated around its axis of rotation without touching the outer wall and on the other hand the smallest possible size for the blade holder can be selected.
- a bearing bush is provided on the two side walls of the blade holder in the area around the axis of rotation of the blade and the blade has a slide bearing in the center, which engages with its cylinder protruding over the blade surface on both sides into the respective bearing bush of the side walls of the blade holder .
- the blade holder itself is also mounted on the handle so that it can rotate about the same axis of rotation.
- the rotary movement of the blade holder is limited, namely between two rotary end positions.
- the first end of rotation position - the safety position - the sheath of the blade holder is outside the handle and thus covers the blade from the outside.
- this securing position which is assumed during assembly and when the rotary cutter is not used, injuries to the blade edge cannot occur.
- the working position - the blade holder is twisted into the handle, whereby the blade protrudes from the handle and a sufficiently large circumference of the blade edge is exposed for a desired use.
- the rotary movement of the blade holder is made possible by a corresponding guide on the handle, namely a guide running in a semicircle around the common axis of rotation of the blade and the blade holder.
- This guide is arranged in an area on the rear wall of the handle, which is extended beyond the grip area. This area represents the holding area.
- the guide is provided as a recess in the rear wall. A rotary knob of the blade holder engages in this guide and projects outwards from a side wall of the blade holder.
- the aforementioned end-of-rotation positions of the blade holder can in each case ensure that the rotary knob is held securely in the respective end-of-rotation position by providing clamping or fixing elements.
- the blade holder is mounted at one end of the handle.
- the rear wall in the holding area has a hole for a pivot bolt that extends through the bearing bushes of the blade holder.
- a screw is advantageously used as a connecting means between the handle and the blade holder, which runs along the axis of rotation of the blade and the blade holder through the rotary cutter and also takes on the function of the pivot pin.
- the blade holder is arranged between the rear wall of the handle and a cover connected to the handle.
- This cover is connected to the handle, for example, via the same screw that is used to connect the blade holder and handle.
- the cover has a threaded sleeve on its inner surface facing the handle, which cooperates with a thread which is provided on the end of the shaft of the screw.
- the screw can also reach through the cover and be connected on the outside with an additional nut.
- the cover also advantageously has a recess in the form of a semicircular guide, comparable to that on the rear wall of the handle.
- Both guides have the same shape and size.
- the width of the guides is adapted in each case to the diameter of the rotary knobs, so that they can easily be moved along the guides from one end of rotation position to the other end of rotation position.
- Both guides are arranged parallel to one another and at the same distance from the axis of rotation.
- Another knob of the blade holder engages in the guide in the cover.
- Both knobs are arranged on the blade holder so that they are the same size and have the same central axis. you each point outwards, on the one hand from the front side wall to the front and on the other hand from the rear side wall of the blade holder to the rear. Guiding the blade holder on both sides by means of the two rotary knobs in the two semicircular guides ensures uniform support of the blade holder and safe movement of the blade while working.
- the blades of this new rotary cutter can also be exchanged in an advantageous manner.
- the blade holder is released from the handle.
- this screw is loosened and a unit comprising the blade holder with the blade is removed from the handle.
- the removal takes place in the safety position of the blade holder, so that the user can grasp the blade holder on the side surfaces of the solid sheath and remove the blade holder with the blade without touching the blade, in particular the blade edge, and in the same way a unit consisting of a blade holder and a can use a new blade. It is not necessary to touch the edge of the blade during assembly, so that the user is protected from injury.
- the blade holder protects the blades - even when they are stored outside the rotary cutter - from dulling and prevents damage to work materials.
- the detachable connection between the handle and the blade holder is advantageously made up of a screw connection.
- the screw runs along the axis of rotation, rests with the screw head on the rear wall of the handle, passes through the hole on this rear wall, the bearing bushes of the blade holder and the sliding bearing of the blade and is connected at the other end, for example to the threaded sleeve on the inside of the cover.
- a nut In the case of a simpler design, for example without a cover, it is also possible to use a nut.
- the tool for forming or releasing the connection between the handle and the blade holder e.g. a screwing tool
- the tool for forming or releasing the connection between the handle and the blade holder is arranged on the rotary cutter itself.
- the grip area of the handle there is a recess, in particular reaching through the handle, in which the tool is held.
- the tool can therefore be easily inserted or removed from both sides.
- the head of the tool is adapted to the shape of the recess so that a form-fitting receptacle is realized.
- fixing elements can be provided in the recess and on the tool for a secure hold of the tool.
- the new rotary cutter has a shape that is comfortable for the user.
- the handle is formed from two shells made of plastic, the front shell leaving the holding area of the blade holder free and the rear wall of the rear shell extending into this holding area.
- at least one upper part and one lower part made of softer plastic are provided.
- the upper part and the lower part can also encompass the holding area of the handle in one piece.
- the shape of the upper part and the lower part is ergonomic so that the rotary cutter lies comfortably in the user's hand when working.
- the ergonomic shape of the handle allows comfortable use in various grip positions.
- This new ergonomic rotary cutter advantageously includes the function of safe blade change.
- the blade holder and the blade form a unit to be assembled and disassembled, so that each blade is provided with a blade guard.
- Different blades can be used with the rotary cutter for different separating cuts.
- a blade holder with a round blade with a flat blade is used for a straight severing cut; for zig-zag dividing lines, round ones are used Blades with corrugated blade and round blades with teeth on the peripheral edge of the blade are used for perforation lines.
- the different blades with a comparable outer diameter advantageously each form a unit with a blade holder of the same size.
- these blade holders can be designed in different colors.
- the blade which is clearly visible in the working position, facilitates precise work.
- the new rotary cutter can be operated equally well by left and right-handers thanks to the provision of two rotary knobs.
- the ergonomic shape of the handle makes it comfortable to use. Separating cuts and turning the blade holder from one end of rotation position to the other can easily be carried out with one hand.
- FIGS Figures 1 to 3 shows a particularly advantageous rotary cutter 10.
- the individual parts of the rotary cutter 10 are shown before assembly, namely the handle 20, the blade holder 30, the cover 28, the connecting means 40 and the tool 50 for creating a screw connection.
- the handle 20 in this case consists of two shells 25, 26 made of plastic, namely the front shell 25 and the rear shell 26, which together with the upper part 21 and the lower part 22 form the handle area 23 of the rotary cutter 10.
- the rear wall 241 of the shell 26 extends from this grip area 23, the right part of the handle 20 in FIG Figs. 1 to 3 , up to the holding area 24, the left part of the handle 20 shown.
- the blade holder 30 is placed on this rear wall 241 for assembly, with its rear rotary knob 31 inserted into a semicircular guide 27 and connected to the handle 20 via a screw connection. After assembly, the screw 40 shown runs along the axis of rotation D, about which the blade 33 and the blade holder 30 can be moved.
- the screw 40 is inserted into the bore 242 on the rear wall 241 of the rear shell 26 of the blade holder 30, pushed through the blade holder 30 and blade 33 until the shaft of the screw with its end-side thread 42 points out of the blade holder 30 at the front.
- the cover 28 is then placed on the blade holder 30.
- This cover 28 can optionally also be fixed on the rotary cutter 10 by clamping means.
- this cover 28 has a threaded sleeve on its inside, which cooperates with the thread 42 of the screw 40.
- the screw 40 has between the screw head and thread 42 a central shaft area without a thread, which functions as a pivot bearing pin for the blade holder 30 and the blade 33.
- the tool 50 shown which in this example has a shaft 51 with a hexagonal cross section, is provided for easier assembly and connection formation.
- the screw head of the screw 40 has a corresponding driving profile, in this case a hexagon socket 41, shown in FIG Fig. 1 or Fig. 3 .
- the blade holder 30 When changing the blade, the blade holder 30 is to be rotated into the safety position and can be grasped by the person to be used on its fixed cover, consisting of side walls 36, 37 and outer wall 38, and removed from the rotary cutter after loosening the screw connection and removing the cover 28.
- the blade holder 30 can, for example, be safely inserted into a plug-in container 60, where unused blade holders 30 ', 30 ", 30'" are stored.
- To insert a new blade 33 a new unit of blade holder 30 ′ with blade 33 is removed from insertable container 60.
- the blade holder 30 is held on its solid sheath by the person to be used and is inserted into the handle 20 without touching the blade edge 331.
- the blade 33 points upwards and, after being inserted in the holding area 24 of the handle 20, is already essentially covered by the handle 20.
- the cover 28 is then put on and the screw connection is made using the tool 50.
- a rotary cutter 10 shown in FIG Fig. 3 , namely in the secured position of the blade holder 30 received.
- damage to the blade edge 331 of the blade 33 can be prevented when the blade is changed.
- the slitter winder 10 is in Fig. 3 with a view of the rear shell 26, which comprises the rear wall 241, which extends into the holding area 24, with the guide 27 extending in a semicircle around the axis of rotation D.
- the width of this guide 27 is adapted to the diameter of the rear knob 31 protruding from the blade holder 30, so that it can easily be removed from the safety position - shown in FIG Fig. 3 - in the working position - shown in Fig. 2 - Can be moved in the direction of the arrow. Since the rotary knob 31 is an integral part of the fixed sheath of the blade holder 30, the sheath of the blade holder 30 is also carried along during this displacement.
- the rotary knob 31 is again in an end-of-rotation position, shown in FIG Fig. 2 , in this case at the left end of the guide 27 and the fixed sheath of the blade holder 30 has moved about the axis of rotation D and is in the working position within the handle 20, namely between the rear wall 241 and the cover 28 and covered by these.
- the Fig. 2 shows the working position.
- the rotary cutter 10 is shown from its front side, namely with a view of the front shell 25 and the cover 28.
- This cover 28 also has a semicircular guide 29 running around the axis of rotation D which, after the cover 28 has been installed, is parallel to the guide 27 the rear wall 241 of the handle 20 extends and has the same shape and size as the guide 27.
- Another rotary knob 31 ′ engages in this guide 29 and projects outward from the front side wall 37 of the blade holder 30.
- Both rotary knobs 31, 31 ' have the same central axis and move in parallel within their guides 27, 29.
- the rotary knobs 31, 31' are fixed by constrictions 271 of the guides 27, 29. However, they can be moved with one hand from their end of rotation positions in the direction of the arrow by applying little force. Since the rotary knobs 31, 31 'are provided on both sides of the rotary cutter 10, their movement can be carried out easily by both right-handed and left-handed people in the same way.
- a round blade 33 with a corrugated blade is held rotatably in the blade holder 30, so that when the rotary cutter 10 is used, the circumferential blade edge 331 can produce zig-zag-shaped separating cuts.
- the blade 33 is held on the solid sheath of the blade holder 30, consisting of two side walls 36, 37 and the outer wall 38 arranged around the blade edge 331, and about half of it is covered to the outside by these walls 36, 37, 38.
- the outer wall 38 is after assembly at such a distance from the axis of rotation D, that a rotary movement of the blade 33 in the working position is easily possible. This distance is therefore slightly larger than the diameter of the blade 33.
- the blade holder 30 and the blade 33 represent a unit in the new rotary cutter 10.
- the blade 33 is changed by changing the blade holder 30 in which the blade 33 is received.
- the blade 33 is provided with a slide bearing 34, which is, for example, molded onto the metallic blade 33 and comprises a cylinder 35 which protrudes outward on both sides over the surface of the blade.
- the blade 33 engages in bearing bushings 32 of the blade holder 30, which are part of the side walls 36, 37, shown in FIG Fig. 4 .
- this pre-assembled unit is then inserted into the handle 20 and the screw connection is made by means of the tool 50.
- the tool 50 is always available with the new rotary cutter 10. It is namely held on the handle 20.
- the handle 20 has a recess 231 in the handle area 23 into which the tool 50 can be inserted.
- the tool head 52 is adapted to the shape of this recess 231.
- the length of the recess 231 is selected so that the shaft 51 can also be received. So that the tool 50 is securely held in this recess 231 when working with the rotary cutter 10, additional fixing elements are provided both on the tool head 52 and within the recess.
- the tool head 52 has tooth-like protruding fixing elements 53, shown in FIG Fig. 5 which fit into a central groove 232 of recess 231 shown in FIG Fig. 1 intervene.
- the tool 50 can easily be pushed in one direction or the other out of this fixing position by lateral pressure and is then available for a blade change.
- the new winder 10 can be equipped with different blades, each of which is held in blade holders 30.
- a rotary cutter set includes, for example, the rotary cutter 10 shown with a blade 33 corrugated blade also blade holder 30 'with a blade with a flat blade for straight separating cuts, blade holder 30 "with a blade with a serrated peripheral edge for perforation lines and another blade holder 30'" for another desired blade.
- the various blade holders 30 ', 30 ", 30'” are advantageously stored in the plug-in container 60 such that the blades 33 reach into the plug-in container 60 and the blade holders 30 ', 30 ", 30'” point outwards.
- a desired unit can be securely gripped by the fixed sheath of the respective blade holder 30 ', 30 ", 30'” and inserted into the handle 20 without touching the blade.
- the fixed covers of the blade holders 30 ', 30 ", 30'” with the different blades 33 are designed in different colors.
- the rotary cutter 10 can be operated with one hand, ie the blade holder 30, which is guided on both sides, can easily be moved from its secured position to the working position and back. If the blade holder 30 is in its working position, the user can make any separating cuts.
- the ergonomic shape of the handle 20 facilitates the comfortable use of the rotary cutter 10.
- the upper part 21 and the lower part 22 of the handle 20 are ergonomically shaped and made of a soft plastic material, which provides a comfortable grip.
- the upper part 21 is slightly indented at the transition between the grip area 23 and the holding area 24 and provides a surface for the thumb or forefinger to exert pressure when using the rotary cutter 10.
- the lower part 22 offers an ergonomically designed surface for the encompassing fingers.
- the upper part 21 and lower part 22 are connected to one another, so that the user's comprehensive hand also rests against soft plastic on the right-hand side of the rotary cutter 10.
- the rotary cutter 10 can be used in various hand positions and guided during the severing cut.
- the blade edge 331 of the blade 33 is always clearly visible during the severing cut. After a severing cut can be easy the safety position can be set again to prevent injury to the user or damage to the textile materials used.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Textile Engineering (AREA)
- Knives (AREA)
Abstract
Die Erfindung betrifft einen Rollschneider (10) mit auswechselbarer Klinge (33), der ein einfaches Auswechseln der Klinge (33) bei geringer Verletzungsgefahr ermöglicht und variabel einsetzbar ist. Der Rollschneider (10) umfasst einen Haltegriff (20) und einen Klingenhalter (30), der lösbar mit dem Haltegriff (20) verbunden ist. Eine feste Hülle des Klingenhalters (30) nimmt die Klinge (33) zumindest zur Hälfte in sich auf (Fig. 1).The invention relates to a rotary cutter (10) with an exchangeable blade (33) which enables the blade (33) to be exchanged easily with a low risk of injury and which can be used in a variety of ways. The rotary cutter (10) comprises a handle (20) and a blade holder (30) which is detachably connected to the handle (20). A solid sheath of the blade holder (30) takes up at least half of the blade (33) (FIG. 1).
Description
Die Erfindung betrifft einen Rollschneider mit auswechselbarer Klinge.The invention relates to a rotary cutter with a replaceable blade.
Rollschneider, die zum Schneiden verschiedenartiger Materialien verwendet werden, insbesondere zum Zuschneiden von textilen Materialien z.B. für handgefertigte Kleidungsstücke. Solche mit der Hand zu führenden Rollschneider umfassen typischerweise einen Handgriff und eine am Handgriff angeordnete runde Klinge. Es sind bereits Rollschneider mit auswechselbarer Klinge bekannt, nämlich aus den Dokumenten
Aufgabe der vorliegenden Erfindung ist es, einen verbesserten Rollschneider mit auswechselbarer Klinge bereitzustellen, der ein einfaches Auswechseln der Klinge bei geringer Verletzungsgefahr ermöglicht und variabel einsetzbar ist.The object of the present invention is to provide an improved rotary cutter with a replaceable blade, which enables the blade to be replaced easily with a low risk of injury and which can be used in a variety of ways.
Diese Aufgabe wird mit einem Rollschneider mit den Merkmalen des Anspruchs 1 gelöst. Weitere vorteilhafte Merkmale für eine solche Vorrichtung enthalten die Unteransprüche.This object is achieved with a rotary cutter with the features of claim 1. The subclaims contain further advantageous features for such a device.
Dieser neue Rollschneider mit auswechselbarer Klinge besitzt einen Haltegriff für den Benutzer des Rollschneiders. An einem Ende des Haltegriffs, dem Haltebereich, ist der Haltegriff mit einem Klingenhalter verbunden, welcher eine Klinge umfasst. Die Verbindung zwischen Haltegriff und Klingenhalter ist lösbar, was ein Wechseln des Klingenhalters und damit der im Klingenhalter gelagerten Klinge ermöglicht. Hierbei stellt der Klingenhalter eine feste Hülle für die Klinge dar und nimmt im Aufnahmeraum dieser Hülle zumindest die Hälfte der Klinge auf. Die Form der festen Hülle des Klingenhalters ist so gewählt, dass die Klinge zwischen den beiden halbkreisförmigen Seitenwänden der Hülle angeordnet ist und diese halbkreisförmigen Seitenwände die Klinge beidseitig abdecken. Die Klingenkante ist in diesem abgedeckten Bereich durch die gebogene Außenwand der Hülle des Klingenhalters geschützt. Der Verlauf der Außenwand ist dabei an den radialen Verlauf der Klingenkante angepasst, so dass einerseits die im Klingenhalter gelagerte Klinge frei um ihre Drehachse drehbar ist, ohne die Außenwand zu berühren und andererseits eine möglichst kleine Größe für den Klingenhalter gewählt werden kann. Zur drehbaren Lagerung der Klinge sind an den beiden Seitenwänden des Klingenhalters im Bereich um die Drehachse der Klinge je eine Lagerbuchse vorhanden und die Klinge besitzt mittig ein Gleitlager, welches mit seinem jeweils über die Klingenoberfläche ragenden Zylinder beidseitig in die jeweilige Lagerbuchse der Seitenwände des Klingenhalters eingreift.This new rotary cutter with exchangeable blade has a handle for the user of the rotary cutter. At one end of the handle, the holding area, the handle is connected to a blade holder which comprises a blade. The connection between the handle and the blade holder is detachable, which enables the blade holder and thus the blade mounted in the blade holder to be changed. Here, the blade holder represents a solid sheath for the blade and holds at least half of the blade in the receiving space of this sheath. The shape of the solid sheath of the blade holder is chosen so that the blade is between the two semicircular side walls the sheath is arranged and these semicircular side walls cover the blade on both sides. In this covered area, the blade edge is protected by the curved outer wall of the sheath of the blade holder. The course of the outer wall is adapted to the radial course of the blade edge so that on the one hand the blade mounted in the blade holder can be freely rotated around its axis of rotation without touching the outer wall and on the other hand the smallest possible size for the blade holder can be selected. For the rotatable mounting of the blade, a bearing bush is provided on the two side walls of the blade holder in the area around the axis of rotation of the blade and the blade has a slide bearing in the center, which engages with its cylinder protruding over the blade surface on both sides into the respective bearing bush of the side walls of the blade holder .
Besonders vorteilhaft ist, dass der Klingenhalter selbst ebenfalls drehbeweglich um die gleiche Drehachse am Haltegriff gelagert ist. Hierbei ist die Drehbewegung des Klingenhalters beschränkt, nämlich zwischen zwei Drehendpositionen. Bei der ersten Drehendposition - der Sicherungsposition - befindet sich die Hülle des Klingenhalters außerhalb des Haltegriffs und deckt damit die Klinge nach außen ab. Dadurch kann es in dieser Sicherungsposition, welche bei der Montage und bei Nichtverwendung des Rollschneiders eingenommen wird, nicht zu Verletzungen an der Klingenkante kommen. In der zweiten Drehendposition - der Arbeitsposition - ist der Klingenhalter in den Haltegriff hinein verdreht, wodurch die Klinge aus dem Haltegriff heraus ragt und ein ausreichend großer Umfang der Klingenkante für eine gewünschte Benutzung freigelegt ist. Die Drehbewegung des Klingenhalters wird durch eine entsprechende Führung am Haltegriff möglich, nämlich einer halbkreisförmig um die gemeinsame Drehachse von Klinge und Klingenhalter verlaufenden Führung. Diese Führung ist in einem Bereich an der Rückwand des Haltegriffs angeordnet, welcher über den Griffbereich hinaus verlängert ist. Dieser Bereich stellt den Haltebereich dar. Die Führung ist als Ausnehmung in der Rückwand vorgesehen. In diese Führung greift ein Drehknopf des Klingenhalters ein, welcher von einer Seitenwand des Klingenhalters nach außen absteht.It is particularly advantageous that the blade holder itself is also mounted on the handle so that it can rotate about the same axis of rotation. Here, the rotary movement of the blade holder is limited, namely between two rotary end positions. In the first end of rotation position - the safety position - the sheath of the blade holder is outside the handle and thus covers the blade from the outside. As a result, in this securing position, which is assumed during assembly and when the rotary cutter is not used, injuries to the blade edge cannot occur. In the second end of rotation position - the working position - the blade holder is twisted into the handle, whereby the blade protrudes from the handle and a sufficiently large circumference of the blade edge is exposed for a desired use. The rotary movement of the blade holder is made possible by a corresponding guide on the handle, namely a guide running in a semicircle around the common axis of rotation of the blade and the blade holder. This guide is arranged in an area on the rear wall of the handle, which is extended beyond the grip area. This area represents the holding area. The guide is provided as a recess in the rear wall. A rotary knob of the blade holder engages in this guide and projects outwards from a side wall of the blade holder.
Die vorgenannten Drehendpositionen des Klingenhalters können jeweils durch das Vorsehen von Klemm- oder Fixierelementen ein sicheres Halten des Drehknopfs in der jeweiligen Drehendposition gewährleisten.The aforementioned end-of-rotation positions of the blade holder can in each case ensure that the rotary knob is held securely in the respective end-of-rotation position by providing clamping or fixing elements.
Der Klingenhalter ist, wie vorbeschrieben, an einem Ende des Haltegriffs gelagert. Hierzu besitzt die Rückwand im Haltebereich eine Bohrung für einen die Lagerbuchsen des Klingenhalters durchgreifenden Drehbolzen. In vorteilhafter Weise wird bei einer Ausführungsform eine Schraube als Verbindungsmittel zwischen Haltegriff und Klingenhalter verwendet, welche entlang der Drehachse von Klinge und Klingenhalter durch den Rollschneider verläuft und auch die Funktion des Drehbolzens übernimmt.As described above, the blade holder is mounted at one end of the handle. For this purpose, the rear wall in the holding area has a hole for a pivot bolt that extends through the bearing bushes of the blade holder. In one embodiment, a screw is advantageously used as a connecting means between the handle and the blade holder, which runs along the axis of rotation of the blade and the blade holder through the rotary cutter and also takes on the function of the pivot pin.
Bei einer besonders vorteilhaften Ausführungsform wird der Klingenhalter zwischen der Rückwand des Haltegriffs und einer mit dem Haltegriff verbundenen Abdeckung angeordnet. Diese Abdeckung wird beispielsweise über die gleiche Schraube, welche der Verbindung von Klingenhalter und Haltegriff dient, mit dem Haltegriff verbunden. Hierzu besitzt die Abdeckung auf ihrer dem Haltegriff zugerichtete Innenfläche eine Gewindehülse, welches mit einem Gewinde zusammenwirkt, das endseitig am Schaft der Schraube vorgesehen ist. Die Schraube kann die Abdeckung auch durchgreifen und an der Außenseite mit einer zusätzlichen Mutter verbunden werden.In a particularly advantageous embodiment, the blade holder is arranged between the rear wall of the handle and a cover connected to the handle. This cover is connected to the handle, for example, via the same screw that is used to connect the blade holder and handle. For this purpose, the cover has a threaded sleeve on its inner surface facing the handle, which cooperates with a thread which is provided on the end of the shaft of the screw. The screw can also reach through the cover and be connected on the outside with an additional nut.
Die Abdeckung besitzt in vorteilhafter Weise ebenfalls eine Ausnehmung in Form einer halbkreisförmig verlaufenden Führung, vergleichbar zu der an der Rückwand des Haltegriffs. Die beiden Führungen sind in Form und Größe gleich gestaltet. Die Breite der Führungen ist jeweils an den Durchmesser der Drehknöpfe angepasst, so dass sich diese leicht entlang der Führungen von einer Drehendposition in die andere Drehendposition verschieben lassen. Beide Führungen sind parallel zueinander und im gleichen Abstand von der Drehachse angeordnet. In die Führung in der Abdeckung greift ein weiterer Drehknopf des Klingenhalters ein. Beide Drehknöpfe sind so am Klingenhalter angeordnet, dass sie die gleiche Größe besitzen und die gleiche Mittelachse haben. Sie zeigen jeweils nach außen, zum einen von der vorderseiteigen Seitenwand nach vorn und zum anderen von der rückseitigen Seitenwand des Klingenhalters nach hinten. Die beidseitige Führung des Klingenhalters mittels der beiden Drehknöpfe in den beiden halbkreisförmig verlaufenden Führungen gewährleistet eine gleichmäßige Abstützung des Klingenhalters und eine sichere Bewegung der Klinge während des Arbeitens.The cover also advantageously has a recess in the form of a semicircular guide, comparable to that on the rear wall of the handle. Both guides have the same shape and size. The width of the guides is adapted in each case to the diameter of the rotary knobs, so that they can easily be moved along the guides from one end of rotation position to the other end of rotation position. Both guides are arranged parallel to one another and at the same distance from the axis of rotation. Another knob of the blade holder engages in the guide in the cover. Both knobs are arranged on the blade holder so that they are the same size and have the same central axis. you each point outwards, on the one hand from the front side wall to the front and on the other hand from the rear side wall of the blade holder to the rear. Guiding the blade holder on both sides by means of the two rotary knobs in the two semicircular guides ensures uniform support of the blade holder and safe movement of the blade while working.
In vorteilhafter Weise sind bei diesem neuen Rollschneider ebenfalls die Klingen auswechselbar. Hierzu wird der Klingenhalter aus dem Haltegriff gelöst. Bei einer Verbindung des Klingenhalters mittels einer Schraube am Haltegriff, wird diese Schraube gelöst und eine Einheit umfassend den Klingenhalter mit der Klinge dem Haltegriff entnommen. Die Entnahme erfolgt in der Sicherungsposition des Klingenhalters, so dass der Benutzer den Klingenhalter an den Seitenflächen der festen Hülle ergreifen kann und ohne Berührung der Klinge, insbesondere der Klingenkante, den Klingenhalter mit der Klinge entnehmen und in gleicher Weise eine Einheit aus einem Klingenhalter und einer neuen Klinge einsetzen kann. Bei der Montage ist es nicht notwendig die Klingenkante zu berühren, so dass der Benutzer vor Verletzungen geschützt ist. Darüber hinaus schützt der Klingenhalter die Klingen - auch bei der Lagerung außerhalb vom Rollschneider - vor Abstumpfen und verhindert Schäden an Arbeitsmaterialien.The blades of this new rotary cutter can also be exchanged in an advantageous manner. To do this, the blade holder is released from the handle. When the blade holder is connected to the handle using a screw, this screw is loosened and a unit comprising the blade holder with the blade is removed from the handle. The removal takes place in the safety position of the blade holder, so that the user can grasp the blade holder on the side surfaces of the solid sheath and remove the blade holder with the blade without touching the blade, in particular the blade edge, and in the same way a unit consisting of a blade holder and a can use a new blade. It is not necessary to touch the edge of the blade during assembly, so that the user is protected from injury. In addition, the blade holder protects the blades - even when they are stored outside the rotary cutter - from dulling and prevents damage to work materials.
In vorteilhafter Weise besteht die lösbare Verbindung zwischen Haltegriff und Klingenhalter aus einer Schraubverbindung. Die Schraube verläuft entlang der Drehachse, liegt mit dem Schraubkopf an der Rückwand des Haltegriffs an, durchgreift die Bohrung an dieser Rückwand, die Lagerbuchsen des Klingenhalters sowie das Gleitlager der Klinge und ist am anderen Ende beispielsweise mit der Gewindehülse an der Innenseite der Abdeckung verbunden. Bei einer einfacheren Ausführung, z.B. ohne Abdeckung, ist auch die Verwendung einer Mutter möglich.The detachable connection between the handle and the blade holder is advantageously made up of a screw connection. The screw runs along the axis of rotation, rests with the screw head on the rear wall of the handle, passes through the hole on this rear wall, the bearing bushes of the blade holder and the sliding bearing of the blade and is connected at the other end, for example to the threaded sleeve on the inside of the cover. In the case of a simpler design, for example without a cover, it is also possible to use a nut.
Besonders vorteilhaft ist bei einer Ausführung des Rollschneiders, dass am Rollschneider selbst das Werkzeug für die Verbindungsbildung bzw. Verbindungslösung zwischen Haltegriff und Klingenhalter, z.B. ein Schraubwerkzeug, angeordnet ist. Hierzu ist im Griffbereich des Haltegriffs eine den Haltegriff insbesondere durchgreifende Ausnehmung vorhanden, in welcher das Werkzeug gehalten wird. Das Werkzeug kann daher von beiden Seiten leicht eingesetzt oder auch entnommen werden. Der Kopf des Werkzeugs ist an die Form der Ausnehmung angepasst, so dass eine formschlüssige Aufnahme realisiert wird. Zusätzlich können in der Ausnehmung und an dem Werkzeug Fixierelemente für einen sicheren Halt des Werkzeugs vorgesehen werden.In one embodiment of the rotary cutter, it is particularly advantageous that the tool for forming or releasing the connection between the handle and the blade holder, e.g. a screwing tool, is arranged on the rotary cutter itself. For this purpose, in the grip area of the handle, there is a recess, in particular reaching through the handle, in which the tool is held. The tool can therefore be easily inserted or removed from both sides. The head of the tool is adapted to the shape of the recess so that a form-fitting receptacle is realized. In addition, fixing elements can be provided in the recess and on the tool for a secure hold of the tool.
Zusätzlich weist der neue Rollschneider eine für den Benutzer angenehme Form auf. Bei einer Ausführungsform ist der Haltegriff aus zwei Schalen aus Kunststoff gebildet, wobei die vordere Schale den Haltebereich des Klingenhalters frei lässt und sich die Rückwand der hinteren Schale bis in diesen Haltebereich erstreckt. Zusätzlich sind bei dieser vorteilhaften Ausführung zumindest ein Oberteil und ein Unterteil aus weicherem Kunststoff vorgesehen. Oberteil und Unterteil können auch einteilig den Haltebereich des Haltegriffs umgreifen. Oberteil und Unterteil sind in ihrer Form ergonomisch ausgestaltet, so dass der Rollschneider beim Arbeiten gut in der Hand des Benutzers liegt. Die ergonomische Form des Haltegriffs erlaubt eine komfortable Benutzung in verschiedenen Griffpositionen.In addition, the new rotary cutter has a shape that is comfortable for the user. In one embodiment, the handle is formed from two shells made of plastic, the front shell leaving the holding area of the blade holder free and the rear wall of the rear shell extending into this holding area. In addition, in this advantageous embodiment, at least one upper part and one lower part made of softer plastic are provided. The upper part and the lower part can also encompass the holding area of the handle in one piece. The shape of the upper part and the lower part is ergonomic so that the rotary cutter lies comfortably in the user's hand when working. The ergonomic shape of the handle allows comfortable use in various grip positions.
Dieser neue ergonomische Rollschneider enthält in vorteilhafter Weise die Funktion des sicheren Klingenwechsels. Klingenhalter und Klinge bilden eine zu montierende und demontierende Einheit, so dass jede Klinge mit einem Klingenschutz versehen ist. Für unterschiedliche Trennschnitte sind unterschiedliche Klingen mit dem Rollschneider verwendbar. Zum Beispiel wird für einen geraden Trennschnitt ein Klingenhalter mit einer runden Klinge mit ebenen Klingenblatt eingesetzt, für Zig-Zag-Trennlinien werden runde Klingen mit gewellten Klingenblatt und für Perforationslinien runde Klingen mit Zähnen an der Umfangskante des Klingenblatts verwendet.This new ergonomic rotary cutter advantageously includes the function of safe blade change. The blade holder and the blade form a unit to be assembled and disassembled, so that each blade is provided with a blade guard. Different blades can be used with the rotary cutter for different separating cuts. For example, a blade holder with a round blade with a flat blade is used for a straight severing cut; for zig-zag dividing lines, round ones are used Blades with corrugated blade and round blades with teeth on the peripheral edge of the blade are used for perforation lines.
Die unterschiedlichen Klingen mit vergleichbarem Außendurchmesser bilden in vorteilhafter Weise jeweils mit einem gleich großen Klingenhalter eine Einheit. Zur besseren Unterscheidung können diese Klingenhalter farblich unterschiedlich gestaltet sein. Die Einheiten, z.B. aufbewahrt in einem Einsteckbehälter, bilden zusammen mit dem Rollschneider ein Rollschneiderset.The different blades with a comparable outer diameter advantageously each form a unit with a blade holder of the same size. For better differentiation, these blade holders can be designed in different colors. The units, e.g. stored in a plug-in container, form a rotary cutter set together with the rotary cutter.
Vorteilhaft ist, dass die in der Arbeitsposition gut sichtbare Klinge das präzise Arbeiten erleichtert. Darüber hinaus ist der neue Rollschneider durch das Vorsehen von zwei Drehknöpfen in gleich guter Weise von Links- als auch von Rechtshändern zu betätigen. Die ergonomische Form des Haltegriffs macht die Benutzung komfortabel. Trennschnitte und das Verdrehen des Klingenhalters von einer in die andere Drehendposition sind einhändig leicht ausführbar.It is advantageous that the blade, which is clearly visible in the working position, facilitates precise work. In addition, the new rotary cutter can be operated equally well by left and right-handers thanks to the provision of two rotary knobs. The ergonomic shape of the handle makes it comfortable to use. Separating cuts and turning the blade holder from one end of rotation position to the other can easily be carried out with one hand.
Weitere Maßnahmen und Vorteile der Erfindung sind in der nachfolgenden Beschreibung dargelegt. Die Erfindung richtet sich dabei auf alle daraus ersichtlichen neuen Merkmale. Die nachfolgende Zeichnung zeigt:
- Fig. 1
- eine perspektivische Ansicht der Einzelteile eines Rollschneiders vor der Montage des Klingenhalters,
- Fig. 2
- eine Vorderansicht des montierten Rollschneiders von
Fig. 1 in Arbeitsposition, - Fig. 3
- eine Rückansicht des montierten Rollschneiders von
Fig. 1 in Sicherungsposition, - Fig. 4
- eine perspektivische Ansicht des Klingenhalters von
Fig. 1 vor dem Einsetzen der Klinge, - Fig. 5
- eine perspektivische Ansicht des Werkzeugs von
Fig. 1 , - Fig. 6
- eine perspektivische Ansicht eines gefüllten Einsteckbehälters.
- Fig. 1
- a perspective view of the individual parts of a rotary cutter before the assembly of the blade holder,
- Fig. 2
- a front view of the assembled rotary cutter of FIG
Fig. 1 in working position, - Fig. 3
- a rear view of the assembled rotary cutter of
Fig. 1 in safety position, - Fig. 4
- FIG. 3 is a perspective view of the blade holder of FIG
Fig. 1 before inserting the blade, - Fig. 5
- FIG. 3 is a perspective view of the tool of FIG
Fig. 1 , - Fig. 6
- a perspective view of a filled plug-in container.
Die Ausführungsform, gezeigt in den
Der Haltegriff 20 besteht in diesem Fall aus zwei Schalen 25, 26 aus Kunststoff, nämlich die vordere Schale 25 und die hintere Schale 26, welche zusammen mit dem Oberteil 21 und dem Unterteil 22 den Griffbereich 23 des Rollschneiders 10 bilden. Die Rückwand 241 der Schale 26 reicht von diesem Griffbereich 23, dem rechten Teil des Haltegriffs 20 in
Bei einem Klingenwechsel ist der Klingenhalter 30 in die Sicherungsposition zu drehen und kann an seiner festen Hülle, bestehend aus Seitenwänden 36, 37 und Außenwand 38, von der zu benutzenden Person gefasst und nach Lösen der Schraubverbindung und Abnehmen der Abdeckung 28 dem Rollschneider entnommen werden. Der Klingenhalter 30 kann beispielsweise in einen Einsteckbehälter 60 sicher eingesetzt werden, wo nicht verwendete Klingenhalter 30', 30", 30'" bevorratet werden. Zum Einsetzen einer neuen Klinge 33 wird eine neue Einheit aus Klingenhalter 30' mit Klinge 33 dem Einsteckbehälter 60 entnommen. Der Klingenhalter 30 wird an seiner festen Hülle von der zu benutzenden Person gehalten und so ohne Berührung der Klingenkante 331 in den Haltegriff 20 eingesetzt. Die Klinge 33 zeigt in diesem Fall nach oben und wird nach dem Einsetzen im Haltebereich 24 des Haltegriffs 20 bereits im Wesentlichen vom Haltegriff 20 abgedeckt. Anschließend wird die Abdeckung 28 aufgesetzt und die Schraubverbindung mittels des Werkzeugs 50 vorgenommen. Nach der Montage wird ein Rollschneider 10, gezeigt in
Der Rollenschneider 10 ist in
Im Klingenhalter 30 ist in diesem gezeigten Beispiel eine runde Klinge 33 mit gewelltem Klingenblatt drehbeweglich gehalten, so dass bei Benutzung des Rollschneiders 10 die umlaufende Klingenkante 331 zig-zag-förmige Trennschnitte erzeugen kann. Wie der
Das Werkzeug 50 steht bei dem neuen Rollschneider 10 immer zur Verfügung. Es ist nämlich am Haltegriff 20 gehalten. Der Haltegriff 20 besitzt im Griffbereich 23 eine Ausnehmung 231, in welche das Werkzeug 50 eingesetzt werden kann. Hierzu ist der Werkzeugkopf 52 an die Form dieser Ausnehmung 231 angepasst. Die Länge der Ausnehmung 231 ist so gewählt, dass auch der Schaft 51 aufgenommen werden kann. Damit beim Arbeiten mit dem Rollschneider 10 das Werkzeug 50 sicher in dieser Ausnehmung 231 gehalten wird, sind zusätzlich Fixierelemente sowohl am Werkzeugkopf 52 als auch innerhalb der Ausnehmung vorgesehen. In diesem Beispiel besitzt der Werkzeugkopf 52 zahnartig abstehende Fixierelemente 53, gezeigt in
Der neue Rollenschneider 10 kann mit verschiedenen Klingen bestückt werden, welche jeweils in Klingenhaltern 30 gehalten sind. Ein Rollschneiderset umfasst beispielsweise neben dem gezeigten Rollschneider 10 mit einer Klinge 33 gewelltem Klingenblatt auch Klingenhalter 30' mit einer Klinge mit ebenen Klingenblatt für gerade Trennschnitte, Klingenhalter 30" mit einer Klinge mit gezahnter Umfangskante für Perforationslinien und einen weiteren Klingenhalter 30'" für eine weitere gewünschte Klinge. Die verschiedenen Klingenhalter 30', 30", 30'" werden in vorteilhafter Weise in dem Einsteckbehälter 60 so gelagert, dass die Klingen 33 in den Einsteckbehälter 60 reichen und die Klingenhalter 30', 30", 30'" nach außen zeigen. Zum Klingenwechsel kann eine gewünschte Einheit sicher an der festen Hülle des jeweiligen Klingenhalter 30', 30", 30'" gegriffen werden und ohne Klingenberührung in den Haltegriff 20 eingesetzt werden. Um die Auswahl des richtigen Klingenhalters 30', 30", 30'" beim Klingenwechsel zu erleichtern, werden die festen Hüllen der Klingenhalter 30', 30", 30'" mit den unterschiedlichen Klingen 33 farblich unterschiedlich gestaltet.The
Der Rollschneider 10 ist einhändig zu bedienen, d.h. der beidseitig geführte Klingenhalter 30 kann leicht von seiner Sicherungsposition in die Arbeitsposition und zurück bewegt werden. Befindet sich der Klingenhalter 30 in seiner Arbeitsposition, so kann der Benutzer beliebig verlaufende Trennschnitte vornehmen. Hierbei erleichtert die ergonomische Form des Haltegriffs 20 das komfortable Benutzen des Rollschneiders 10. So ist hier das Oberteil 21 und das Unterteil 22 des Haltegriffs 20 ergonomisch geformt und aus einem weichen Kunststoffmaterial vorgesehen, welches ein angenehmes Griffgefühl vermittelt. Das Oberteil 21 ist am Übergang zwischen Griffbereich 23 und Haltebereich 24 leicht eingedellt und bietet eine Oberfläche für den Daumen oder Zeigefinger, um Druck beim Benutzen des Rollschneiders 10 auszuüben. Das Unterteil 22 bietet eine ergonomisch gestaltete Oberfläche für die umgreifenden Finger. Oberteil 21 und Unterteil 22 sind bei diesem Rollschneider 10 miteinander verbunden, so dass auch an der rechten Seite des Rollschneiders 10 die umfassende Hand des Benutzers an weichem Kunststoff anliegt. Der Rollschneider 10 kann in verschiedenen Handpositionen benutzt und beim Trennschnitt geführt werden. Beim Trennschnitt ist die Klingenkante 331 der Klinge 33 immer gut sichtbar. Nach einem Trennschnitt kann leicht wieder die Sicherungsposition eingestellt werden, um Verletzungen des Benutzers oder Schäden an verwendeten textilen Materialien zu verhindern.The
- 1010
- RollschneiderRotary cutter
- 2020th
- HaltegriffGrab handle
- 2121st
- OberteilTop
- 2222nd
- UnterteilLower part
- 2323
- GriffbereichGrip area
- 231231
- AusnehmungRecess
- 232232
- Rippe, RinneRib, gutter
- 2424
- HaltebereichHolding area
- 241241
- Rückwand, integralBack wall, integral
- 242242
- Bohrungdrilling
- 2525th
- SchaleBowl
- 2626th
- SchaleBowl
- 2727
- halbkreisförmige Führungsemicircular guide
- 271271
- VerengungenConstrictions
- 2828
- Abdeckungcover
- 2929
- halbkreisförmige Führungsemicircular guide
- 291291
- VerengungenConstrictions
- 30, 30', 30", 30"'30, 30 ', 30 ", 30"'
- KlingenhalterBlade holder
- 31, 31'31, 31 '
- DrehknopfKnob
- 3232
- LagerbuchseBearing bush
- 3333
- Klingeblade
- 331331
- KlingenkanteBlade edge
- 3434
- Gleitlagerbearings
- 3535
- Zylindercylinder
- 36, 3736, 37
- Seitenwand von 30Side wall of 30
- 3838
- Außenwand von 30Outer wall of 30
- 4040
- Schraube, MetallScrew, metal
- 4141
- Mitnahmeprofil, InnensechskantDriving profile, hexagon socket
- 4242
- GewindeschaftThreaded shaft
- 5050
- Werkzeug, SchraubkopfantriebTool, screw head drive
- 5151
- hexagonale Schafthexagonal shaft
- 5252
- WerkzeugkopfTool head
- 5353
- FixierelementFixing element
- 6060
- EinsteckbehälterInsertable container
- DD.
- DrehachseAxis of rotation
Claims (16)
dadurch gekennzeichnet,
characterized,
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DE202019104152.8U DE202019104152U1 (en) | 2019-07-29 | 2019-07-29 | Rotary cutter with exchangeable blade |
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EP20182874.6A Active EP3771534B1 (en) | 2019-07-29 | 2020-06-29 | Roller cutter with interchangeable blade |
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US (1) | US11400612B2 (en) |
EP (1) | EP3771534B1 (en) |
CN (1) | CN112301718B (en) |
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US11400612B2 (en) * | 2019-07-29 | 2022-08-02 | William Prym Gmbh & Co. Kg | Rotary cutter with interchangeable blade |
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US11077572B2 (en) * | 2018-10-04 | 2021-08-03 | Velocity, A Managed Services Company, Inc. | Edge guide |
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US5144749A (en) | 1992-03-30 | 1992-09-08 | Chen Chien Tang | Utility knife |
WO2000007783A2 (en) * | 1998-08-07 | 2000-02-17 | Youngkeun Cho | Rotary cutter with a blade cartridge |
US6438850B2 (en) | 2000-04-12 | 2002-08-27 | Progressive International Corp. | Roller cutter with retractable and removable cutter wheel |
US6484405B1 (en) * | 2001-10-01 | 2002-11-26 | John D. Martelli | Rotary wheel cutting apparatus with a spring-biased blade cover |
EP1525959B1 (en) | 2003-10-22 | 2010-09-08 | Clover Mfg. Co., Ltd. | Hand-held tool with discal blade |
EP1878546A1 (en) * | 2006-07-12 | 2008-01-16 | Dart Industries Inc. | Rotary cutting tool assembly |
WO2009091697A2 (en) | 2008-01-18 | 2009-07-23 | Fiskars Brands, Inc. | Cutting device |
US20150266193A1 (en) * | 2014-03-21 | 2015-09-24 | Grant Bell | Rotary cutting tool |
EP3040170A1 (en) * | 2015-01-02 | 2016-07-06 | King's Flair Development Ltd. | Cutter combination device for foodstuffs |
US20170297214A1 (en) * | 2016-04-15 | 2017-10-19 | Qiuping Liu | Handheld rotary cutting blade |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11400612B2 (en) * | 2019-07-29 | 2022-08-02 | William Prym Gmbh & Co. Kg | Rotary cutter with interchangeable blade |
Also Published As
Publication number | Publication date |
---|---|
CN112301718A (en) | 2021-02-02 |
US11400612B2 (en) | 2022-08-02 |
US20210031392A1 (en) | 2021-02-04 |
RU2020123907A3 (en) | 2022-01-20 |
ES2906199T3 (en) | 2022-04-13 |
EP3771534B1 (en) | 2021-11-10 |
RU2020123907A (en) | 2022-01-20 |
CN112301718B (en) | 2023-07-11 |
DE202019104152U1 (en) | 2019-08-05 |
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