DE10137096A1 - Pencil sharpener, for lead or cosmetic pencils, has housing with cutting device and holding device for pencil moved along predetermined path of movement in housing through automatic guiding device - Google Patents

Abstract

The pencil sharpener has a housing (10) with cutting device (12) and a holding device for the pencil (16). The holding device is housed at least in part in the housing and an automatic guiding device moves the holding device along a predetermined path of movement in the housing. The automatic guiding device has at least one guide element engaging in a guide path.

Description

The invention relates to a sharpener for pens, the one Mine, such as pencils, crayons and in particular Cosmetic pens and the like.

Already known sharpeners have a housing with an opening into which a pen to be sharpened can be inserted. One end of this pin contacts an angled one cutting edge aligned to the longitudinal axis of the pin such that during a rotary movement or helical movement of the Pin around its longitudinal axis a pointed cone Cut surface at the end of the pin.

These known sharpener can be used to sharpen pens with essential cylindrical lead are used in which a Carrier body encased this lead, which is usually made of wood is made and a circular or hexagonal Has cross-section.

For many types of pens, but especially for Cosmetic pencils and the like do not want the tip to be conical. This is one of them justifies that the material for these tips is very soft and that on the one hand you have good strength of the mine, on the other hand, a not too large contact area to apply the material of the tip.

The invention is therefore based on the object Sharpener to create pencils, which is technical is designed differently. In particular, the invention is the The task is to use a sharpener to sharpen pens create through which pens with essentially any Cross section of the carrier body and the mine on reliable Way can be pointed.

The object is achieved by a sharpener according to claim 1.

Preferred developments of the invention are the subject of Dependent claims.

According to the invention, a pencil sharpener is proposed, which a cutting device, a holding device for the Pen, at least one housing and one Has positive guidance device.

According to the invention, the pen is used in particular by Holding device added. The holding device encompasses preferably the pin on its outer circumference. The Holding device is arranged within the sharpener in such a way that a free end of the pen to be sharpened is located outside the holding device so that it is the Cutting device can contact. Preferably the pen held non-rotatably within the holding device, so that a Prevents rotation about an axis parallel to its longitudinal axis becomes. The pin to be pointed is particularly preferred positively received in the holding device. Preferably the pin is axially displaceable with respect to the holding device stored its longitudinal axis so that it in the direction of Cutting device can be moved.

The housing preferably has at least two housing parts on, of which a housing part is a cover. The Housing parts are interconnected. In particular, they are Housing parts welded together, especially with ultrasound welded, glued or screwed.

The positive guidance device has at least one Guide element and at least one guideway in which the Guide element is forcibly guided when the pin is pointed.

The guideway is in particular a cam formed or has one. The is particularly preferred Guideway formed by a groove. It is preferred that the Guideway is formed by a profiling. Especially the guideway is preferably formed by a groove which has a constant or varying groove depth. One means of a varying groove depth, or a positive guidance realized by means of the groove course or A combination of these positive guides is special according to the invention prefers.

According to a particularly preferred embodiment of the invention a disk extends concentrically around the Holding device which can hold the pin, on the outer circumference this disc has a groove with a along the circumference varying groove depth is provided, so that at least one fixed with the guide pin connected to the housing engages in this groove and the position of the pin or the holding device opposite changed the housing according to a predetermined characteristic.

Are particularly preferred on one or both faces one concentrically extending around the holding device Disc grooves arranged, each in the housing engage firmly connected guide pins, these grooves are alike in terms of their course, or at least they are alike distinguish by their course.

The guideway or groove is a closed path. The Guide element is particularly preferred as a guide pin formed, which is guided in particular in a groove.

Several differently shaped guideways are preferred intended.

Even the use of a guide groove has the advantage that the holding device when rotating about the axis in one predetermined manner can be performed.

The use of two guide grooves on both sides the disc-like approach of the holding device are and in each case one firmly connected to the housing Pen engages has the main advantage that the Path of movement of the pin compared to that in the housing arranged knife can be selected in any way.

In the case of an elliptical pen, this is preferably the case In the event that a guideway ensures that the pen is moved up and down while the other guideway causes the pen to move against and away from the knife becomes. This creates a chisel-shaped edge that is straight especially with thick colored pencils or with cosmetic pencils is advantageous.

In particular, by a suitable selection of the Guide grooves are ensured that the position of the mine to the Knife is optimal, and in particular that the clearance angle, the is needed for a good cut, in the optimal one Area is.

A sharpener according to the invention can be used in particular for pens are used, which is essentially a cross-section have any shaped mine. This mine can in particular be non-rotationally symmetrical. Preferably the cross section of this mine is elliptical. The Mine carriers can also be essentially any Have cross-sectional area and in particular elliptical be trained.

In addition, a sharpener according to the invention, especially according to the training of his Forced guidance device, for a variety of other forms of mine carrier, the especially one essentially along the mine axis extending wooden shell that extends around the mine extends and thus protects them in particular, used become.

Two grooves on the respective are particularly preferred End faces provided, each for guiding a fixed in Serve mounted pin.

The cutting device is particularly preferred, that is in particular the cutting edge, firmly arranged in relation to the housing. The cutting edge is particularly preferably fixed to the housing connected, which in particular by means of a screw connection or the like is generated.

The pin is preferably rotationally fixed in the holding device recorded with respect to its longitudinal axis, the Holding device, including the pin, opposite the cutting device is movably arranged. The pen is preferred positively received in the holding device. When sharpening the Pin becomes the holding device, and thus the pin, moved relative to the cutting device.

The pin is preferably axial in the holding device slidably added, so that it towards the Cutting device can be moved and by means of a rotary movement the cutting surface of the pin relative to the cutting device of the pin can be shaped.

According to a particularly preferred embodiment of the invention is the positive guidance device or the course of the groove, in which engages a pin, or the cam, such trained that the clearance angle when sharpening always between 2 ° and 10 °, preferably essentially between 3 ° and 5 °, is particularly preferably 3 °. The clearance angle is preferred kept constant when sharpening the pen. Is preferred also that the clearance angle within an interval of 1 ° at Pointing lies.

The sharpener preferably has a sealing device. This Sealing device seals in particular the guideways, see above that leadership behavior is not due to penetrating materials, such as chips or the like.

The sealing washer is in particular made of a material which POM and / or polyamide or derin or Hostaform, manufactured, where Derin and Hostaform are product names.

The sharpener has in particular a guideway, which allows an elliptical pen with Ellipse ratios of essentially 1.3: 1 to 1.6: 1 at essentially constant clearance angle can be pointed. Especially the ellipse ratio of the pin is preferred in essential 1.45: 1. Other ellipse ratios are as well other forms of the pen are also preferred according to the invention.

The sharpener preferably has a container which catches the chips that arise during sharpening. Such a thing for example as a collecting hood or chip collecting hood trained container essentially adjoins the cutting edge and is particularly transparent.

The guide disk between two flat surfaces is preferred performed, which is a movement of the guide disc in the axial Prevent direction, i.e. perpendicular to the flat surface.

Preferably, an opening in the outer wall of the Housing through which a pin to tip into the housing is introduced through a cover, particularly as a disc is formed, at least partially covered. This cover is spring-loaded against the housing from the inside of the housing pressed. The cover has a through opening, through which is the pen and possibly part of a Guide means for this pin extends. The Through opening is dimensioned such that it is against the wall this passage opening all around the mounting device or the pen. Thus the housing is in the range of Opening through which the pen is inserted when sharpening and in which it is perpendicular to its longitudinal axis when pointed is essentially covered. The cover is there Movable perpendicular to the longitudinal axis of the pin relative to the housing arranged and is thus by the spring in each of these possible relative positions relative to the housing against the housing pressed.

The sharpener is preferably at least partially made of one high quality plastic, such as POM. In particular are the guideway and / or the holding device and / or the Guide pin and / or the container from a (high quality) Made of plastic.

The cutting device or the knife is preferably made of made of hardened steel. In particular, it is provided that the holding device has the guide sleeve. Especially the holding device is preferably the rotary insert, or vice versa.

In a preferred design, the sharpener has a rotary insert on a guide sleeve with a circumferential extending wall section. This Wall section delimits a cavity in which the pin in particular, form-fitting, can be included in the tip. In the rotary insert also has this preferred design a support section over which this rotary insert in can support in the axial direction.

Preferably, the support section is designed so that it is extends in the radial direction.

The guide sleeve preferably has a circumferential direction varying wall thickness. The wall thickness is particularly preferred the guide sleeve is essentially constant in the axial direction.

The course of the wall thickness of the guide sleeve in the circumferential direction preferably affects the shape of the pencil to be sharpened.

The support section is particularly preferably axially at the end Guide sleeve arranged. The support section is supported preferably from a housing section, in particular in axial direction. The support section is preferably supported in the axial direction on an essentially radial extending housing wall section.

A housing insert is preferably provided, which is special preferably designed in several parts, such as two parts is. The housing insert can be designed so that it is a Has division plane which is substantially perpendicular to Longitudinal axis is aligned. Are in preferred design at least three cam guide surfaces on or in Housing insert arranged.

In particular, it can be provided that the housing insert is designed in two parts and each of these parts on the At least one side facing the interior of the housing Cam guide surface is arranged.

It is further preferred that the housing insert is axially on both sides each have a radially extending wall section has, which is each provided with a through opening. The guide sleeve can pass through this through opening extend. At least one is particularly preferred Boundary wall of these through openings as Cam guide surface.

Three cam disks are particularly preferably provided are axially adjacent.

Preferably has at least one cam or Cam disc set an opening that, for example, a Through opening is and radially inward in the axial direction extends. The guide sleeve can be inserted through this opening become. This opening is preferably designed so that in it the guide sleeve is form-fitting, in particular non-rotatable, can be included.

At least three cams are preferably integral with connected to each other.

It is also particularly preferred that at least three Cam discs are integrally connected to the guide sleeve.

The housing is preferably sealed, in particular end. One or more seals can be provided for this his.

At least two are preferred Cam guides arranged at an angle of 120 ° to each other.

It is further preferred that at least two Cam guides are arranged at an angle of 60 ° to each other. The cam disk guides are preferably flat, at least two cam disk guides are provided, whose normals enclose an angle of 120 °.

In the following the invention with reference to the figures that the Not intended to limit the invention, explained in more detail.

It shows:

Figure 1 shows a first exemplary embodiment of the invention in a schematic, partially sectioned view.

FIG. 2 shows a first sectional view of the illustration according to FIG. 1;

FIG. 3 shows a second sectional view of the illustration according to FIG. 1;

FIG. 4 shows the position of the knife blade in a first position of the pin;

FIG. 5 shows the position of the knife blade in a second position of the pin;

Fig. 6 the position of the knife blade in a third position of the pin;

FIG. 7 shows the position of the knife blade in a fourth position of the pin;

Figure 8 is a second exemplary embodiment of the invention in a schematic partially sectional view; FIG.

Fig. 9 is a sectional view taken along line 9-9 of Fig. 8;

FIG. 10 shows a side view from the direction of arrow 126 from FIG. 8; and

Fig. 11 is a sectional view taken along the line 11-11 of Fig. 10;

FIG. 12 is an exemplary embodiment of the invention in a schematic representation;

Fig. 13 is a sectional view seen from the line 13-13 in Fig. 12;

Fig. 14 is a sectional view as seen from line 14-14 in Fig. 12;

Fig. 15 is a sectional view as seen from line 15-15 in Fig. 12;

Fig. 16 is a sectional view as seen from line 16-16 in Fig. 12;

Fig. 17 is a sectional view as seen from line 17-17 in Fig. 12;

FIG. 18 is an exemplary embodiment of the invention in a schematic representation;

Fig. 19 is a sectional view as seen from line 19-19 in Fig. 18;

Fig. 20 is a sectional view as seen from line 20-20 in Fig. 18;

Fig. 21 is a sectional view seen from the line 21-21 in Fig. 18;

Fig. 22 is a sectional view as seen from line 22-22 in Fig. 18;

Figure 23 is an exemplary embodiment of the invention in a schematic representation.

Fig. 24 is a sectional view as seen from line 24-24 in Fig. 23;

Fig. 25 is a sectional view as seen from line 25-25 in Fig. 23;

Fig. 26 is a sectional view as seen from line 26-26 in Fig. 23;

Fig. 27 is a sectional view seen from the line 27-27 in Fig. 23;

FIG. 28 is an exemplary embodiment of the invention in a schematic representation;

Fig. 29 is a sectional view seen from the line 29-29 in Fig. 28;

Fig. 30 is a sectional view as seen from line 30-30 in Fig. 28;

Fig. 31 is a sectional view as seen from line 31-31 in Fig. 28;

Figure 32 is a sectional view as seen from line 32-32 in Figure 28;

Figure 33 is an exemplary embodiment of the invention in a schematic representation in partial sectional view. and

Figure 34 is an exemplary embodiment of the invention in a partially sectional schematic illustration of view.

Fig. 1 shows an exemplary embodiment of the Anspitzers 1 according to the invention, which is intended to provide substantially elliptical cosmetic pencils with a substantially chisel-shaped tip.

The sharpener has a housing which is identified overall by the reference number 10 . The housing has a substantially cylindrical portion 10 a, which is partially covered by an annular plate 10 b.

An essentially conical taper 10 c is formed on this circular ring plate 10 b, to which a hardened knife edge 12 made of hardened steel is fastened by means of a screw 11 .

The knife edge is designed in a conventional manner, which means that it is essentially designed as a flat plate which has a cutting edge 12 b and a tip 12 c on the surface facing the edge ( FIG. 4).

The inner cylindrical space 10 d of the housing 10 is closed with a housing cover 13 which is essentially circular and which is fastened to the housing 10 with screws 13 a which engage in threaded bores 10 e in the housing.

It should be noted that instead of this screw attachment also another connection between the housing cover and the housing can be done.

Arranged within the housing is a holding device, which is designated overall by 14 .

The holding device 14 consists of a first, the contour of the pencil to be sharpened matched tubular retaining part 14 a and an essentially disc-like part 14 b, which are preferably integrally connected.

The holding device 14 is received in the cylindrical cavity 10 a of the housing 10 such that the holding device can rotate relative to the housing.

For this purpose, the housing cover 10 is provided with a bore 13 b, which is designed so that it enables an undisturbed rotation of the tubular extension 14 a.

As already stated, the tubular extension 14 a is designed such that at least the inner contour of the outer contour of a pin 16 is adapted with a longitudinal axis 18 .

The disc-shaped part 14 b of the holding device has a first end face 22 and a second end face 24 . A first groove 26 is provided in the first end face 22 and a second groove 28 is provided in the second end face 24 . A first pin 30 , which is held firmly in the housing 10 , engages in the groove 26 and a pin 32 , which is firmly held in the housing cover 13 , engages in the second groove 28 .

The dimensions of the first and second grooves 26 , 28 and the first 30 and the second pin 32 are chosen so that the pins can slide in the grooves.

There is also a sealing washer 34 , which preferably consists of a plastic and is provided between the disk-shaped part 14 b and the cover 13 . This groove serves for sealing and also facilitates the movement of the annular part 14 b.

On the disk-shaped extension 10 b, as can be clearly seen in FIG. 1, an essentially conical, cup-shaped container 36 is provided, which was placed on an extension of the circular disk-shaped part 10 b. This container is preferably made of plastic, particularly preferably made of transparent plastic.

FIG. 2 shows a partially sectioned view along the line 2-2 in FIG. 1. Here the shape of the groove 28 can be clearly seen.

Fig. 3 shows a further sectional view, from which the shape of the groove 26 passes out. The shape of the groove or the grooves is determined in particular by a back calculation from the desired rolling movement during the point.

As can be seen in FIG. 3, the first groove 26 is essentially elliptical, the elliptical configuration essentially corresponding to the elliptical configuration of the corresponding opening of the tubular extension 14 a of the holding device. In other words, the curved path 26 is essentially elliptical-concentric to the elliptical contour of the pin 16 .

As can be seen in FIG. 2, the second groove is also essentially approximately elliptical, but, roughly speaking, the ellipse here is tilted at an angle of 45 °. One could also speak of a distorted ellipse.

The function of the sharpener according to the invention will now be described with reference to FIGS. 4 to 7:

Since the circular disc-shaped extension 14 b of the holding device 14 is held between the disc-shaped extension 10 b of the housing and the housing cover 13 , it cannot move in one direction along the axis 18 of the pin. In relation to the housing 10 , the disc-shaped extension 14 b therefore executes a flat movement. As is known, the movement of a body can be represented as the sum of a translational movement with a rotational movement about the respective current axis of rotation. In the case of a planar movement, as in the present case, this results in a total of three degrees of freedom, namely two possibilities of movement in the X and Y planes (which are not shown and which would extend here perpendicular to the axis 18 ), and a rotational movement.

Since the two guide pins 30 and 32 are firmly anchored in the housing and the two guide grooves 26 and 28 are in turn firmly arranged in the circular projection 14 b, there are two fixed points for the movement of the disk-shaped part 14 b with respect to the housing 10 , so that only one degree of freedom remains.

This means that a rotation of the pin 16 leads to an exactly predetermined movement of the holding device 14 with respect to the housing 10 and thus also with respect to the knife edge 12 firmly connected to the latter.

Let to 7 see Fig. 4, as this movement is designed.

The knife 12 is arranged such that it rests with a clearance angle 40 on the tip of the pin to be shaped. With the rotation of the pin 16, this is how to 7 visible moves from the Fig. 4, in such a manner along the direction of the arrow 50 up and down respectively along the direction of the arrow 52 back and forth, that this clearance angle is maintained in all positions of the pin.

On the one hand, this ensures that the tip of the pen is exact the predetermined shape, in the present case a chisel-shaped Top achieved.

Furthermore, the constant clearance angle ensures that the cutting result is uniform and that no pressure is exerted vertically on the pin (as viewed in the direction of the illustration in FIGS. 4 to 7) during the cutting.

This is an exact in a technically simple manner Forced control of the position of the pen with respect to the Knife edge achieved.

It should be noted that the chisel-shaped tip is on an elliptical pen is the preferred application of the present invention. The solution according to the invention allows it however, the most varied forms, characterized by the linear Superposition of two cam tracks at two fixed points, that is to achieve the pens.

Fig. 8 shows a second exemplary embodiment of the invention in a schematic representation.

The sharpener 1 has a housing 10 to which a cover 60 is detachably attached. The housing 10 has a thin-walled outer wall 62 . A first intermediate part 64 and a second intermediate part 66 are arranged within the thin-walled outer wall 62 within the housing 10 .

The first 64 and the second intermediate part 66 each have an essentially flat region 68 , 70 which extends essentially perpendicular to the longitudinal axis 72 of a channel 74 which is arranged within the holding device 14 and serves to receive a pin 16 to be sharpened.

The first 64 and the second intermediate part 66 are accommodated in the housing in a rotationally fixed manner with respect to the longitudinal axis 72 . The first 42 and the second intermediate part 66 each have a flange 76 , 78 which extends in the outer area 80 , 82 from a plate 80 , 86 having the flat area 68 and 70 , respectively, perpendicular to the flat area 68 , 70 . With their respective outer surfaces 88 , 90 facing away from the longitudinal axis 72 , the circumferential flanges 76 , 78 bear against the outer wall 62 . The end face 92 of the second intermediate part 96 facing away from the plate 86 is supported against the first intermediate part 64 . The plate 84 of the first intermediate part 64 and the plate 86 of the second intermediate part 66 each have an essentially circular opening 94 , 96 . In the area of the opening 94 of the first intermediate part 96 , an extension 98 with a cylindrical part 100 and a conical part 102 formed thereon extends from the plate 84 in the direction facing away from the second intermediate part 66 , the cylindrical part 100 and the conical part 102 in each case are hollow.

At the end facing away from the second intermediate part 66 , the conical part 102 has an opening 104 which connects the inside of the conical part 102 with the inside of the cover 60 . A knife edge 12 is mounted on the shoulder 98 by means of a screw 11 at an angle to the longitudinal axis 72 .

Between the first intermediate part 64 and the second intermediate part 66 , a cam plate 20 extends parallel to the flat regions 68 , 66 , which contacts the first 64 and the second intermediate part 66 and is rotatable with respect to the longitudinal axis 72 relative to the first intermediate part 64 and the second intermediate part 66 is arranged. The cam disc 20 has on its two end faces 22 , 24 , which contact the first intermediate part 64 and the second intermediate part 66 , respectively circumferential grooves 26 , 28 , which are arranged asymmetrically with respect to a plane spanned by the cam disc 20 . In these grooves 26 , 28 each extend pins, which are fastened to the first intermediate part 64 or to the second intermediate part 66 , so that the movement path which the cam 20 can execute relative to the first intermediate part 64 and the second intermediate part 66 results from the interaction the pins with the grooves 26 , 28 is determined. The cam disc 20 has a through opening 106 . A tubular extension 14 a is formed on the cam 20 around this through-opening on the side facing away from the first intermediate part 64 , which extends through the opening 96 of the plate 86 of the second intermediate part 66 .

The plate 86 of the second intermediate part 66 also has, on its side facing away from the first intermediate part 64, a flange 108 which extends perpendicularly to the planar region 68 and is in particular designed to be circumferential, and to support the spring element 110 which is in particular designed as a spiral spring and is supported against the second intermediate part 66 , serves. With its second end 112 , the field element 110 is supported against a disk 114 with a circumferential flange 116 . This disc 114 has a through opening 118 adapted to the outer contour of the tubular extension 14 a, through which this tubular extension 14 a extends.

The disk 114 extends substantially perpendicular to the longitudinal axis 72 and is supported with its end face facing away from the field element 110 against the housing 10 . For this purpose, the housing 10 has in particular a tubular extension 122 which extends around the longitudinal axis 22 . The disc thus covers an opening 124 which extends in the outer wall 62 of the housing 10 and has an opening area which is larger than the area defined by the outer circumference of the tubular extension 14 a.

FIG. 9 shows a sectional illustration along the line 9-9 from FIG. 8.

FIG. 10 shows a side view from the direction of arrow 126 from FIG. 8.

In Fig. 10 in particular shows that the window of the housing 10 is located 114 in the direction perpendicular to the longitudinal axis 72 slidably relative to the housing 10 and the tubular extension 122nd The respective position of the disk 114 relative to the housing 10 is determined in particular by the respective relative position of the pin 16 or the tubular extension 14 a or the cam 20 relative to the housing 10 . The disk 114 pressed against the housing 10 under the action of the field element 110 follows the plane perpendicular to the longitudinal axis 72, in particular the movement of the tubular extension 14 a, since its through-hole adjoins the tubular extension from the outside. The field element 110 prevents the disk 114 from falling off the housing 10 and, on the other hand, enables flexible mobility of the disk 114 in accordance with the mobility of the tubular extension 14 a.

FIG. 11 shows a sectional view along the line 11-11 from FIG. 10.

Fig. 12 is an exemplary embodiment of a Anspitzers invention.

The sharpener 100 has a cap 102 , a housing 103 , a housing insert 108 and a rotary insert 110 .

Furthermore, a pin 116 with a longitudinal axis 118 is shown in FIG. 12, which extends into the sharpener 100 . This pin 116 is not part of the sharpener 100 itself.

The housing 103 is designed in several pieces and has a first housing part 104 and a second housing part 106 .

The first housing part 104 is inserted into the second housing part 106 and is supported with the outer surface 200 of its first wall section 202 on the inner surface 204 of the second housing part 106 .

On the radially inward inner surface 206 of the first wall section 202 , a second cam guide 122 b is provided, which can interact with a second cam 120 b.

A second wall section 208 is arranged radially within the first wall section 202 , on the radially inner inner surface 210 of which a first cam disk guide 122 a is provided, which can interact with a first cam disk 120 a.

The first 202 and the second wall section 208 are connected via a third wall section 212 of the first housing part 104 , which extends essentially radially inwards, has a projection 214 on which the cap 102 can be supported, and at its radially inward end 216 has a through opening 218 .

Is substantially in the region of the through hole 218, a fourth wall portion 220 integrally formed which tapers in the third of this wall section 212 towards remote and in the interior 221, the tip 222 of the pen is added to the tips 116 at the third wall portion 212th

A knife edge 112 extends through a — preferably slot-like — through opening — of the fourth wall section 220 and is detachably fastened to the fourth wall section 220 by means of a screw 111 .

The second housing part 106 is essentially cup-shaped and has a housing sleeve 160 , which is preferably an essentially elliptical wall area, and a side cover wall 224 , which is integrally formed on the housing sleeve 160 and extends essentially radially inwards. This cover wall 224 has a through opening 226 through which the pin 116 can be inserted into the housing interior 228 .

A fifth 230 and a sixth wall section 232 extend from this cover wall 224 in the vicinity of the passage opening 226 into the housing interior 228 , the radially inner inner surfaces 234 , 236 of which extend essentially parallel to the longitudinal axis 118 of the guide sleeve 114 .

The eighth cam disk guide 122 h is arranged on the inner surface 234 and interacts with the eighth cam disk 120 h.

The seventh cam disk guide 122 g is arranged on the inner surface 236 and cooperates with the seventh cam disk 120 g.

The housing insert 108 , which can basically be designed in one or more pieces, is designed in two pieces in the design according to FIG. 8 and inserted into the housing 103 with a slight press fit. The parting plane of the two parts of the housing insert 108 extends substantially through a central longitudinal axis 119 of the housing 103, it being provided that these parts of the housing insert 108 are disposed substantially mirror-symmetrically to this plane of separation. The two parts of the housing insert 108 are supported against one another in the circumferential direction.

When put together, the two parts of the housing insert 108 can in principle form a substantially closed outer surface or a non-closed, at least not completely closed outer surface.

In the design according to FIG. 12, the two parts of the housing insert 108 , correspondingly placed one against the other, form a substantially non-closed or not completely closed jacket surface. This is realized in the design according to FIG. 12 in such a way that these two parts of the housing insert 108 each have an essentially closed coherent wall section, which forms a breakthrough-free jacket section which extends in the circumferential direction essentially parallel to the longitudinal axis 118 of the housing insert 108 and over a section in the circumferential direction. This respective coherent and breakthrough-free jacket section of the two parts of the housing insert 108 is followed in each case by tab-like extensions which extend in the circumferential direction.

In the area of this tab-like extensions is extending the outer surface of the housing insert 108 in the direction of the longitudinal axis of the housing insert 108 is not over the entire length of this insert 108th The tabs of the different parts of the housing insert 108 support each other in the circumferential direction. In the region of these tabs of the different parts of the housing insert 108 is designed such that Außenumfangsmaß compared to Innenumfangsmaß of the pod shell 160, that a slight interference fit is effected upon insertion of the housing insert 108 in the housing 103rd

The housing insert 108 has a third cam guide 122 c, which interacts with a third cam 120 c, a fourth cam guide 122 d, which interacts with a fourth cam 120 d, a fifth cam guide 122 e, which interacts with a fifth cam 120 e, and a sixth cam guide 122 f which interacts with a sixth cam 120 f.

The rotary insert 110 also has a guide sleeve 114 with a non-rotationally symmetrical, in particular elliptically shaped, jacket-like wall area 238 , with which the third 120 c, fourth 120 d, fifth 120 e and sixth 120 f cam plate are connected in one piece.

Cam disks 120 a, 120 b, 120 c, 120 d, 120 e, 120 f, 120 g, 120 h are arranged on the outer surface of this rotary insert 110 .

The first 120 a and the eighth cam plate 120 h are each formed by a section of the radially outer outer surface 240 of the jacket-like wall area 238 of the guide sleeve 114 . The disk-shaped cam disks 120 b, 120 c, 120 d, 120 e, 120 f, 120 g also extend from this outer surface 240 of the jacket-like wall area 238 in the radial direction, which, as indicated by way of example by the reference symbol, may have cutouts 123 , The thickness of these disks is preferably between 1 mm and 10 mm, and particularly preferably essentially 3 mm. But other dimensions are preferred.

The first 120 a, the second 120 b, the third 120 c and the fourth cam 120 d are assigned to a first group 242 and the fourth 120 e, the fifth 120 f, the sixth 120 g and the seventh cam 120 h are a second Assigned to group 244 .

The cams 120 a, 120 b, 120 c, 120 d of the first group 242 are, in this order, axially offset and arranged adjacent to one another, with - in the design according to FIG. 12 - two adjacent cams 120 a, 120 b, 120 c, 120 d of the cam disks 120 a, 120 b, 120 c, 120 d of the first group 242 essentially abut one another in the axial direction.

The cams 120 e, 120 f, 120 g, 120 h of the second group 244 are, in this order, axially offset and arranged adjacent to one another, with - in the design according to FIG. 12 - two adjacent cams 120 e, 120 f, 120 g, 120 h of the cam plates 120 e, 120 f, 120 g, 120 h of the second group 244 essentially abut one another in the axial direction.

The first group 242 is arranged at a distance from the second group 244 in the axial direction.

The first group 242 is arranged essentially in the end region 246 of the guide sleeve 114 which faces the fourth wall section 220 of the first housing part 104 , while the second group 244 essentially in the end region 248 of the guide sleeve 114 which faces away from the fourth wall section 220 of the first housing part 104 is arranged.

The cam disks 120 a, 120 b, 120 c, 120 d of the first group 242 interact with the cam disk guides 122 a, 122 b, 122 c, 122 d associated therewith in such a way that in each case the position of the rotary insert 110 in the circumferential direction of each Angle of rotation is defined essentially clearly and repeatably.

In a corresponding manner, the cam disks 120 e, 120 f, 120 g, 120 h of the second group 244 interact with the cam disk guides 122 e, 122 f, 122 g, 122 h assigned to them.

It should be noted that instead of the two groups 242 , 244 , one group or more than two groups can also be given. Furthermore, the number of cam disks assigned to a group can also be selected differently in order to essentially uniquely determine a position at each rotation angle of the rotary insert 110 . For example, three cam disks with correspondingly assigned cam disk guides can be provided. It is further preferred that adjacent cams of a group - at least partially - are spaced axially apart from one another. Furthermore, the order of the cams in the axial direction can be designed differently.

In a preferred embodiment , the cam disks assigned to the same group 242 , 244 differ in size.

The cam disks 120 a, 120 b, 120 c, 120 d assigned to the first group 242 are preferably arranged mirror-symmetrically to the cam disks 120 e, 120 f, 120 g, 120 h assigned to the second group 244 , with respect to a plane of symmetry that is perpendicular is aligned with the longitudinal axis of the rotary insert 110 . If appropriate, the entire rotary insert 110 is mirror-symmetrical with respect to this plane of symmetry.

The inner contour of the guide sleeve 114 is non-rotationally symmetrical, in particular elliptical, and is preferably adapted to the outer contour of the pin 116 , which has an elliptical cross-sectional area perpendicular to its longitudinal axis.

The cap 102 can be detachably connected to the first housing part 104 . The design of the cap 102 is cylindrical in the present application example. The cap 102 can be designed to be closed, facing away from the housing, and to catch the chips that arise during the tip.

FIG. 13 shows the sharpener 100 from the perspective of line 13-13 in FIG. 12.

Fig. 13 illustrates the elliptical design of the housing shell 160 , which delimits an elliptical interior 106 a. Furthermore, the cylindrical design of the cap 102 can be seen in FIG. 13. B extending through the wall portion 220 provided in the fourth slot 112 into the interior 221 extending knife edge 112 which is releasably secured by a screw 111 on the fourth wall section 220 has a cutting edge 112 on a.

Fig. 13 also shows the elliptical configuration of the second housing part 106 facing the opening cross section 104a of the through hole 218 and the circular configuration of the opening cross-section 104, the second housing part 106 facing away from the through hole 218 b.

FIG. 14 shows the sharpener 100 from the view of line 14-14 in FIG. 12.

The housing insert 108 is inserted into the housing shell 160 with a slight interference fit, the two parts of this housing insert 108 being supported on one another by tabs 250 , 252 , 254 , 256 extending in the circumferential direction.

Fig. 14 also shows the first cam guide 122 and a second cam guide 122 a. The first guide surface 258 a of the first cam disk guide 122 a and the second guide surface 258 b of the second cam disk guide 122 b are each flat and axially offset from one another and arranged parallel to one another.

The first cam disk 120 a makes contact with the first cam disk guide 122 a in at least one rotational position, as shown in FIG. 14. The first cam disk 120 a preferably contacts the first cam disk guide 122 a in every rotational position.

FIG. 15 shows a view along line 15-15 in FIG. 12.

The rotational position of the rotary insert 110 corresponds to that shown in FIG. 14 in the illustration according to FIG. 15.

The sectional view of FIG. 15 is compared with the offset axially from FIG. 14.

As can be seen from the regions 260 and 262 in FIG. 15, in the axial position shown there, the parts 264 , 266 of the housing insert 108 are objected to in the circumferential direction.

The second, elliptically designed cam disk 120 b lies against the second cam disk guide 122 b in at least one rotational position, in particular in all rotational positions.

The first 120 a and the second cam plate 120 b are arranged with respect to one another in such a way that their respective major axes 124 a and 124 b are perpendicular to one another.

Further, FIG. 15, the third 122 c and the fourth cam guide 122 d, each extending as a kind of intermediate wall from the outer wall 268 of the housing insert 108 inwards, in particular perpendicular to the longitudinal axis 118 of.

The third guide surface 258 c of the third cam guide 122 c and the fourth guide surface 258 d of the fourth cam guide 122 d are each designed flat and axially offset from one another and arranged parallel to one another.

The third 258 c and the fourth guide surface 258 d are further arranged perpendicular to the first 258 a and the second guide surface 258 b.

The third cam disk 120 c bears on the third cam disk guide 122 c at least in one rotational position, in particular in all rotational positions. The circumferential surface of the third cam disc has two curved regions which abut one another with their respective ends, so that two substantially tapering transition regions 270 , 272 are formed between the curved regions. These tips 270 , 272 lie opposite each other and are rotated clockwise by approximately 45 degrees with respect to the major axis 124 a of the first cam plate 120 a and by approximately 45 degrees with respect to the major axis 124 d of the second cam plate 120 b. The third cam plate 120 c is designed such that the curvature 123 a extending to the main axis 124 b of the second cam plate 120 b is somewhat rounder than the curvature 123 b that runs in the opposite direction. Furthermore, the third cam plate 120 c is point-symmetrical in the view plane running perpendicular to the longitudinal axis 118 .

FIG. 16 shows a view along the line 16-16 in FIG. 12.

In FIG. 16, the entire rotating insert 108 is rotated 90 degrees with respect to the position in FIGS. 14 and 15.

The fourth cam disk 120 d lies against the fourth cam disk guide 122 d at least in one rotational position, in particular in all. The fourth cam 120 d is mirror-symmetrical to the third cam 120 c with respect to the major axis 124 b of the second cam 120 b.

FIG. 17 shows a view along line 17-17 in FIG. 12.

The third cam disc 120 c is asymmetrical. The sections 125 a to 125 d of the cam guides 122 a to 122 h facing the cam disks 120 a to 120 h are essentially flat.

Due to the interaction of the cam disks 120 a to 120 d with the cam disk guides 122 a to 122 d, the guide sleeve 114 is held in every rotational position such that the tip of a pin received in the guide sleeve 114 is guided along the cutting edge 112 a.

Here, the terms left, right, below and above should be understood as follows: In the section plane perpendicular to the central longitudinal axis 119 , directions above and below are to be understood, which extend in a first direction. Left and right are to be understood as directions that extend in a second direction perpendicular to the first direction. The position of the knife edge 112 is defined as above. The first cam disk guide 122 a prevents the rotating insert 110 from moving upwards by contact with the first cam disk 120 a. As Fig. 15 shows, the second cam plate 120 b, in addition to the first cam plate 120 a is located axially, a guide upward group; that is, it prevents the rotary insert 110 from moving downward. FIG. 16 120 indicates the third cam plate c and c whose cam guide 122. The rotary insert 110 is prevented from evading to the left or from ensuring that the rotary insert 110 is guided to the right. FIG. 17 shows the fourth cam plate 120 d and the fourth cam plate guide 122 d, which, in their interaction, enable guidance to the right. Seen from the first housing part 104 , in the rear part of the sharpener there is a corresponding arrangement of four cam disks 120 a to h and their four cam disk guides 122 g and 122 h (two cam disk guides cannot be seen), which ensures an even more smooth running; tilting in particular is prevented. The total of eight cam disks 120 a to 120 h and eight cam disk guides 122 a to 122 h thus make it possible for the rotary insert 110 to move up and down in the direction of arrow 150 and to the right and left in arrow direction 152 ( FIG. 17), so that the pin rests on the cutting edge in every rotational angle position. The position of the rotary insert 110 is clearly defined by each angle of rotation.

In a preferred embodiment, the rotary insert 108 can only be axially displaced in a limited number of rotational positions when the housing 103 is open, in particular for assembly. This can be one or two or three or four or more rotational positions, for example. In the remaining rotational positions, stops act in the axial direction, in particular in both orientations of the axial direction.

The stops can be designed, for example, in such a way that alternating, if necessary, cams in the axial direction to adjacent cam disk guides under axial load attacks.

Fig. 18 shows an exemplary embodiment of the invention in a schematic representation.

The sharpener 100 has a housing 103 with a first housing part 104 and with a second housing part 106 .

The second housing part 106 has a first housing wall section 400 and a second housing wall section 402 , which is fixedly and integrally connected to the first housing wall section 400 .

The first housing wall section 400 of the second housing part 106 is designed to be ring-elliptical and extends around a housing longitudinal axis 404 .

The second housing wall section 402 of the second housing part 106 extends essentially radially to the housing longitudinal axis 404 . This second housing wall section 402 is designed as an elliptical plate and has an elliptical through opening 406 . A, in particular circular, depression 408 extends on the side of the second housing wall section 402 facing the housing interior 228 around the through opening 406 .

A, in particular disc-shaped, sealing element 410 is received in this recess. This sealing element 410 has a through opening 412 . This has an elliptical cross-sectional area that is smaller than the elliptical cross-sectional area of the through opening 406 , which is provided in the second housing wall section 402 . The outer peripheral contour of the sealing element 410 can, for example, be circular, the diameter of this circular shape being smaller than the diameter of the circular recess 408 .

The first housing part 104 is designed in one piece and is fixedly or detachably connected to the second housing part 106 .

The first housing part 104 has a disk-like region 414 which extends essentially perpendicular to the longitudinal axis 404 of the housing. This disk-like region 414 has an outer circumferential contour radially on the outside, which is essentially adapted to the inner circumferential contour of the first housing wall section 400 . A through opening 416 is provided radially on the inside in the disk-like region 414 .

An extension is provided on this disk-like area 414 , which extends from this area 414 in the direction facing away from the housing interior 228 and receives the knife edge 112 by means of a screw 111 .

Furthermore, two flanges 510 , 512 are provided on the disk-like region 414 , which project from the radially outer section of the region 414 in the axial direction and toward the housing interior 228 . These flanges 510 , 512 terminate radially on the outside with the disk-like region 414 , are each designed as a ring ellipse section and are spaced apart from one another in the circumferential direction by spaces 417 , 418 .

The first housing part 104 is inserted axially into the second housing part 106 .

Optionally, a cap or lid 102 is releasably attached to the housing 103 to create a space 420 for collecting the chips. This cap 102 can, for example, have a shoulder 422 in its wall 424 and can be inserted with an area 426 adjoining this shoulder in or on the first housing wall section 400 , in particular centered.

In the disk-like area 414 of the first housing part 104 , an, in particular elliptical, through opening 428 is also provided, through which the pin 16 can extend to the knife edge 112 .

A rotary insert 110 is arranged in the housing interior 228 , which has a guide sleeve or bush 114 and a support section 430 which extends essentially radially to the longitudinal axis 404 . This support section 430 is designed in such a way that it can absorb any tilting moments which act on the guide sleeve 114 about an axis which is directed perpendicular to the longitudinal axis 404 of the housing.

In the design according to FIG. 18, this support section 430 is designed as a disk with a round outer peripheral contour, which is arranged axially at the end on the guide sleeve 114 and is integrally connected to the latter. This disk can be supported on the disk-like region 414 of the first housing part 104 and / or on the housing insert 108 . The through opening provided in this support section 430 corresponds - in particular also with regard to the contour - to the through opening 432 provided in the guide sleeve 114 .

In the design according to FIG. 18, a cam disk arrangement 434 is also provided, which is designed as a one-piece cam disk insert 436 with three cam disks 438 , 440 , 442 arranged axially adjacent to one another.

This cam disk insert 436 has a through opening 444 which is designed in such a way that the outer surface 446 of the guide sleeve 114 can be received in a form-fitting manner, in particular essentially or almost free of play.

Each of the cams 438 , 440 , 442 interacts with a cam guide 448 , 450 , 452 . Correspondingly, these cam disk guides 448 , 450 , 452 , of which the cam disk guide 452 is shown in FIG. 18, are likewise axially offset and arranged adjacent to one another.

The third cam disk guide 452 is formed by the inner surface 454 of a through opening 456 which is provided in a first, radially extending wall section 458 of the housing insert 108 .

A second, radially extending wall section 460 of the housing insert 108 is provided in the axial direction at a distance from this first radially extending wall section 458 .

On each of the first 458 and the second radially extending wall section 460 , a web 462 , 464 protrudes, which is essentially straight and elongated. These webs 460 , 462 serve as the first 448 or second cam disk guide 450 for the first 438 or second cam disk 440 .

On one of the wall sections 458 , 460 , two axially and circumferentially extending flanges or wall sections 492 , 494 are arranged radially on the outside, which are spaced apart in the circumferential direction and are therefore not shown in the sectional view according to FIG. 18.

In the second, radially extending wall section 460 of the housing insert 108 , a through opening 466 is provided, through which the guide sleeve 114 extends.

The first 438 and the second cam disc 440 are arranged axially between the first 458 and the second, radially extending wall section 460 of the housing insert 108 .

FIG. 19 shows a view along the line 19-19 from FIG. 18 with the cover 102 removed.

In Fig. 19, the first Gehäusewandungsabschnitt 400 to recognize the second housing part 106.

In this first housing wall section 400 , the second housing part 104 is inserted, on which an extension 480 is provided, which receives the knife edge 112 by means of a screw 111 .

A section of the passage opening 428 of the first housing part 104 can also be seen.

FIG. 20 shows a sectional view along the line 20-20 from FIG. 18 in a representation rotated by 90 °.

In Fig. 20 of the cam insert 436 is shown having the first cam 438 and second cam 440th These cams 438 , 440 are firmly connected to a sleeve 490 , the surface of which forms the third cam 442 in an axially offset plane.

In Fig. 20, the guide sleeve 114 is also shown.

The cam disk insert 436 or the sleeve 490 of the cam disk insert 436 is arranged around this guide sleeve 114 in the circumferential direction and in a form-fitting manner.

Fig. 20 is also designed as the web 462 first cam guide 448, as well as - indicated by broken lines - the designed as a web 464 second cam guide 450th

Furthermore, FIG. 20 shows two wall sections 492 , 494 , which are arranged fixedly on the radial wall section 458 of the housing insert 108 and extend radially on the outside in the circumferential direction and axially, between which, viewed in the circumferential direction, there are spaces 496 , 498 .

The first 438 and / or the second cam disc 440 can extend into these spaces 496 , 498 , with a corresponding rotational position.

FIG. 21 shows a sectional view of the design according to FIG. 18 along the line 21-21 in a representation rotated by 90 °.

FIG. 22 shows a sectional illustration of the design according to FIG. 18 along the line 22-22 in a representation rotated by 90 °.

That of the first housing part 104 arranged on the disc-like portion 414. Flanges 510, 512 are also shown in Fig. 22, which protrude from the facing radially external portion of the area 414 in the axial direction and the housing interior 228th The circumferential gaps 416 , 418 between these flanges 510 , 512 are also shown.

Here designed as a disc - - support portion 430 shown, and through this support portion 430 and the guide sleeve 114 extending through hole 432. Further, 22 is in Fig..

The through opening 428 of the first housing part 104 is indicated by the line 514 , which in the sectional view according to FIG. 22 is partially covered by the support section 430 .

The lines 430 'and 432 ' indicate the position of the support section 430 or the through opening 432 , which is given when a pin or the guide sleeve 114 is rotated 90 degrees with respect to the above-described position according to FIG. 22. As can be seen from these different positions of the support section, the latter extends temporarily into the interstices 416 , 418 , in particular alternately.

Fig. 23 shows an exemplary embodiment of the invention in a schematic representation.

The sharpener 100 according to FIG. 23 differs from the exemplary embodiment according to FIG. 18 in particular by the design of the rotary insert 110 and the design of the cam disk arrangement 434 .

The rotary insert 110 is connected in one piece to the cam disk arrangement 434 in the exemplary embodiment according to FIG. 23. Further, the rotary lug 110 in the embodiment according to Fig. 23 is not the disc 430 described with reference to FIG. 18 that in the local design between the housing insert 108 and the disc-like portion of the housing insert 104 is arranged.

In the design according to FIG. 23, a further sealing device or sealing disk 530 is provided instead at said location. The sealing devices 410 and 530 - as seen in the axial direction - are arranged on different sides of the housing insert 108 . The sealing device or sealing disk 530 has a through opening 532 radially on the inside, through which the guide sleeve 114 of the rotary insert 110 extends.

The cam assembly 434 is in the exemplary embodiment according to FIG. 23 so that the first 438 and the second cam are disposed 440 at the two axial sides of a radially extending slice 534, which radially outwardly from the respective cam guides 448 and 450 can be contacted.

In the radial direction, there is a material-free space 536 and 538 between the first 438 and the second cam 440 and the guide sleeve 114 .

Furthermore, in the design according to FIG. 23, flanges 540 , 542 extending in sections in the circumferential direction are provided at the radially outer end of the disk 534 , each of which, for example, extends along a section of a circular path and is spaced in the circumferential direction by spaces 544 , 546 .

In the embodiment according to Fig. 23, the third cam is formed by a surface region 442 of the guide sleeve 114.

Fig. 24 shows a sectional view of the embodiment according to FIG. 23 along the line 24-24 in a 90 ° rotation representation with a removed cover 102.

FIG. 25 shows a sectional illustration of the design according to FIG. 23 along the line 25-25 in a representation rotated by 90 °.

Fig. 25 it can be seen that the guide sleeve 114 of the turning insert 110 is integrally connected to the first cam 438th

Furthermore, FIG. 25 shows a first cam disk guide 448, which is rounded radially outward and radially inward. The first cam disk guide 448 plunges into the intermediate space 546 or, if appropriate, into the intermediate space 544 , with the rotary insert 110 in a corresponding rotational position.

FIG. 26 shows a sectional illustration of the design according to FIG. 23 along the line 26-26 in a representation rotated by 90 °.

FIG. 26 shows that the guide sleeve 114 of the rotary insert 110 is connected in one piece to the second cam disc 440 .

Furthermore, the second cam disk guide 450 according to FIG. 26 is designed in the manner that was explained with reference to FIG. 25 with respect to the first cam disk guide 448 .

FIG. 27 shows a sectional illustration of the design according to FIG. 23 along the line 27-27 in a representation rotated by 90 °.

FIG. 27 shows in particular that the third cam plate 442 is formed by a region of the guide sleeve 114 or a region of the outer surface of the guide sleeve 114 .

Figs. 28 to 32 show different views and sectional views showing an exemplary configuration according to the invention that is similar to the design 18 to 22 explained with reference to FIGS..

The designs according to FIGS. 28 to 32, on the one hand, and according to FIG. 18 to 22, on the other hand, differ not only the geometry, such as in particular the geometry of the cam plates 438, 440, 442, in particular by the relative arrangement of the first cam guide 448 relative to the second cam guide 450 .

While these cam guides 448 , 450 or their normals in the design according to FIGS. 18 to 22 enclose an angle of approximately 145 degrees, this angle in the design according to FIGS. 28 to 32 is 120 degrees. In this context, however, it should be noted that other angular relationships are preferred according to the invention.

FIGS. 33 and 34 each show a teilgeschnitte exemplary embodiment of the invention in a schematic representation.

Are shown by way of example with reference to these FIGS. 33 and 34 should, as the shape of the tip can be influenced 560th

In Figs. 33 and 34 a cross-section through a guide sleeve 114 and a portion is on the one hand each of these respective guide sleeve 114 shown having disposed therein a pin portion 562, respectively.

In the design according to FIG. 33, the guide sleeve 114 has a non-constant wall thickness in the circumferential direction. In this exemplary design, the smallest wall thickness 564 is given in the area of the small main axis of the ring-elliptical cross-sectional shape and the thickest wall thickness 566 in the area of the large main axis.

By means of this guide sleeve 114 , a relatively flat tip 560 of the pin 562 to be sharpened can be produced in comparison to the design according to FIG. 34.

In the embodiment according to Fig. 34, the wall thickness of the guide sleeve 114 in the circumferential direction is constant.

18 are used to 32, the guide sleeve 114 according to Figs. 33 and 34 may, in particular in the embodiments shown Figs.. Reference number 1 sharpener
10 housing
10 a cylindrical cavity of the housing 10
10 b circular ring plate
10 c taper
10 d inner cylindrical space
10 e threaded holes
10 g approach of the circular disc-shaped part 10 b
11 screw
12 knife edge
12 b cutting edge
12 c tip of the knife edge
13 housing cover
13 a screw
13 b hole
12 knife edge
14 holding device
14 a tubular approach
14 b disc-like part
16 pen
18 longitudinal axis
20 cam
22 first end face
24 second end face
26 first groove
28 second groove
30 first pen
32 second pin
34 sealing washer
36 containers
40 clearance angle
50 direction of movement up and down
52 Direction of movement back and forth
60 lids
62 outer wall
64 first intermediate part
66 second intermediate part
68 flat area of 64
70 flat area of 66
72 longitudinal axis
74 channel
76 flange
78 flange
80 outer area of 84
82 outer area of 86
84 plate of 64
86 plate of 66
88 outer surface
90 outer surface
92 end face
94 opening in 84
96 opening in 86
98 Approach of 84
100 'cylindrical part of 98
102 'conical part of 98
104 'opening in 102
106 'through opening
108 'flange
110 'field element
112 'end of 110
114 'disc
116 'flange
118 'through opening
120 face of 114
122 tubular neck
124 opening
100 sharpeners
102 cap
103 housing
104 first housing part
104 a rear elliptical opening of the first housing part
106 second housing part
106 a inner elliptical space
108 housing insert
110 turning insert
111 screw
112 knife edge
112 a cutting edge
114 guide sleeve
114 a inner elliptical space of the guide sleeve
114 b outer surface of the guide sleeve
116 pen
118 longitudinal axis
119 central longitudinal axis
120 a first cam
120 b second cam
120 c third cam
120 d fourth cam
120 e fifth cam
120 f sixth cam
120 g seventh cam
120 h eighth cam
122 a first cam guide
122 b second cam guide
122 c third cam guide
122 d fourth cam guide
122 e fifth cam guide
122 f sixth cam guide
122 g seventh cam guide
122 h eighth cam guide
123 a Course of the curve of the third cam clockwise away from the tip
123 b Course of the curve of the third cam disc counter-clockwise away from the tip
Major axis of 124 a of 120 a
Major axis of 124 b of 120 b
125 a first section of the cam guide facing the cam disk
125 b second section of the cam guide facing the cam disk
125 c third section of the cam guide facing the cam
125 d fourth section of the cam guide facing the cam
150 Direction of movement up and down
152 Direction of movement to the left and right
160 housing shell
200 outer surface of wall section 202
202 first wall section of 104
204 inner surface of 106
206 inner surface of 202
208 second wall section of 104
210 inner surface of 208
212 third wall section of 104
214 head start
216 radially inner end of 212
218 through opening in 212
220 fourth wall section of 104
221 interior of 220
222 top of 116
224 side cover wall of 106
226 through opening in 224
228 housing interior
230 fifth wall section
232 sixth wall section
234 inner surfaces of 230
236 inner surfaces of 232
238 jacket-like wall area of 114
240 outer surface of 238
242 first group
244 second group
246 end range of 114
248 end range of 114
250 tab of 108
252 tab of 108
254 tab of 108
256 tab of 108
258 a first guide surface of 122 a
258 b first guide surface of 122 b
258 c first guide surface of 122 c
258 d first guide surface of 122 d
260 area
262 area
264 part of 108
266 part of 108
268 outer wall of 108
270 tapered transition area
272 tapered transition area
400 first housing wall section 400 from 106
402 second housing wall section of 106
404 housing longitudinal axis
406 through opening in 402
408 deepening in 402
410 sealing element
412 through opening in 410
414 disc-like area of 104
416 through opening
417 space
418 space
420 space to collect the chips
422 paragraph of 424
424 wall of 102
426 area of 424
428 through opening in 414
430 support section
432 through opening in 114
434 cam arrangement
436 cam disc insert
438 cam
440 cam
442 cam
444 through opening in 434
446 outer surface of 114
448 cam guide
450 cam guide
452 cam guide
454 inner surface
456 through opening in 454
458 first radial wall section of 108
460 second radial wall section from 108
462 footbridge
464 footbridge
466 through opening in 460
480 continuation of 104
490 sleeve of 436
492 axially and circumferentially extending wall portion of 108
494 axially and circumferentially extending wall portion of 108
496 space
498 space
510 flange to 104
512 flange to 104
Line 514
530 sealing device or sealing washer
532 through opening in 530
534 disc from 434
536 material-free space
538 material-free space
540 flange to 534
542 flange to 534
544 space
546 space
560 tip of 562
562 pen
564 wall thickness of 114
566 wall thickness of 114

Claims (50)

1. Sharpener for pens ( 16 ), in particular for pens ( 16 ) with a rotationally asymmetrical lead or for pens ( 16 ), the lead of which is arranged within a mine carrier, the cross-sectional area of which is perpendicular to the longitudinal axis and is non-hexagonal and non-circular is with
at least one housing ( 10 );
a cutter connected to this housing;
a holding device for the pin ( 16 ) which is at least partially accommodated in the housing; and
a positive guidance device which guides the holding device along a predetermined movement path in this housing. 2. Sharpener according to claim 1, characterized in that this positive guidance at least one guide element and has at least one guideway in which this Guide element engages. 3. Pencil sharpener according to claim 2, characterized in that the Guide element is a guide pin. 4. Sharpener according to one of the preceding claims, characterized characterized in that the guideway is a groove. 5. Sharpener according to one of the preceding claims, characterized in that the shape of the guideway is substantially the same as the outer contour of the cross-sectional area of the cutting surface which the cutting device produces on the pin ( 16 ). 6. Sharpener according to one of the preceding claims, characterized by a guide disk which extends radially outward from the holding device and has at least one groove for receiving a guide element which is fixedly arranged relative to the housing ( 10 ). 7. Sharpener according to one of the preceding claims, characterized in that the cutting device is fixedly arranged relative to the housing ( 10 ). 8. Sharpener according to one of the preceding claims, characterized in that the pin ( 16 ) is rotatably received in the holding device relative to this holding device and the holding device is arranged movably with respect to the cutting device. 9. Sharpener according to one of the preceding claims, characterized in that the pin ( 16 ) is received axially displaceably in the holding device in the direction of the longitudinal axis of the pin. 10. Sharpener according to one of the preceding claims, characterized in that the pin ( 16 ) is guided with respect to the cutting device by means of the positive guide device during sharpening such that the clearance angle is between 2 ° and 10 °. 11. Sharpener according to one of the preceding claims, characterized in that the clearance angle when the pin ( 16 ) is pointed is substantially constant. 12. Sharpener according to one of the preceding claims, characterized by at least one sealing device for Sealing the guideways. 13. Pencil sharpener according to one of the preceding claims, characterized in that the pencil sharpener ( 1 ) is at least partially made of plastic. 14. Sharpener according to one of the preceding claims, characterized by at least one container for receiving Chips. 15. Sharpener according to one of the preceding claims, characterized characterized in that by means of this sharpener non-rotationally symmetrical cut surfaces can be generated. 16. Sharpener according to one of the preceding claims, characterized characterized in that the guide disc between two Flat surfaces is performed, these flat surfaces a Prevent movement of the guide disc in the axial direction. 17. Sharpener according to one of the preceding claims, characterized by a cover device ( 114 ) for at least partially covering an opening in the housing ( 10 ) through which the pin ( 16 ) can be inserted into the interior of the housing, this cover being spring-loaded on the housing ( 10 ) is present. 18. Sharpener according to one of the preceding claims, characterized in that a rotary insert ( 110 ) is at least partially in a housing ( 106 ) and moves there on rotation along the longitudinal axis on a predetermined path. 19. Sharpener according to one of the preceding claims, characterized in that the rotary insert ( 110 ) has a guide sleeve ( 114 ) in which a pin ( 116 ) can move axially displaceably, a rotation of the pin ( 116 ) about its longitudinal axis ( 118 ) causes the rotating insert ( 110 ) to rotate with the guide sleeve ( 114 ). 20. Sharpener according to one of the preceding claims, characterized in that the rotary insert ( 110 ) has a guide sleeve ( 114 ) and with this cam discs firmly connected ( 120 a, 120 b, 120 c, 120 d, 120 e, 120 f, 120 g , 120 h). 21. Sharpener according to one of the preceding claims, characterized in that the rotary insert ( 110 ) has at least three cams. 22. Sharpener according to one of the preceding claims, characterized in that in the interior ( 106 a) of the housing ( 103 ) cam guides ( 122 a, 122 b, 122 c, 122 d, 122 e, 122 f, 122 g, 122 h) are provided, which interact with the cams ( 120 a, 120 b, 120 c, 120 d, 120 e, 120 f, 120 g 120 h). 23. Sharpener according to one of the preceding claims, characterized in that at least one of the cam guides ( 122 a, 122 b, 122 c, 122 d, 122 e, 122 f, 122 g, 122 h) one of the cam disks ( 120 a) to ( 120 h) facing section ( 125 a, 125 b, 125 c, 125 d) which extends substantially straight or flat. 24. Sharpener according to one of the preceding claims, characterized in that at least one of the cams ( 120 a) to ( 120 h) is formed by part of the outer surface ( 114 b) of the guide sleeve ( 114 ). 25. Sharpener according to one of the preceding claims, characterized in that the cams ( 120 a) to ( 120 h) are elliptical or asymmetrical. 26. Sharpener according to one of the preceding claims, characterized in that at least three cam disks ( 120 a) to ( 120 h) and cam disk guides ( 122 a) to ( 122 h) face each other and the position of the rotary insert ( 110 ) at each angle of rotation essentially define clearly. 27. Sharpener according to one of the preceding claims, characterized in that the rotary insert ( 110 ) at least two groups ( 242 , 244 ) of cams ( 120 a, 120 b, 120 c, 120 d; 120 e, 120 f, 120 g, 120 h) has an axial distance from each other. 28. Sharpener according to one of the preceding claims, characterized in that the rotary insert ( 110 ) is axially displaceable at a maximum of three positions in the housing, the position being defined by an angular range which is preferably less than 10 degrees, or preferably less than 5 degrees, or is preferably less than 3 degrees, or preferably less than 2 degrees or preferably less than 1 degree. 29. Pencil sharpener according to one of the preceding claims, characterized in that characterized in that the pen tip when rotated about the longitudinal axis (118) (A 112) of the knife blade (112) bears at each rotational position of the cutting edge. 30. Sharpener according to one of the preceding claims, characterized in that a rotary insert ( 110 ) is provided which has a guide sleeve ( 114 ) in which the pin ( 562 ), in particular in a form-fitting manner, can be received, and a support section ( 430 ) , over which this rotary insert ( 110 ) can be supported in the axial direction. 31. Sharpener according to one of the preceding claims, characterized in that the support section ( 430 ) is designed as a radially extending section. 32. Sharpener according to one of the preceding claims, characterized in that the guide sleeve ( 114 ) has a non-constant wall thickness in the circumferential direction. 33. Sharpener according to one of the preceding claims, characterized in that the shape of the wall thickness of the guide sleeve ( 114 ) in the circumferential direction influences the shape of the tip ( 560 ) of the pin ( 562 ) to be pointed. 34. Sharpener according to one of the preceding claims, characterized in that the support section ( 430 ) is designed plate-like. 35. Sharpener according to one of the preceding claims, characterized in that the support section ( 430 ) is arranged axially at the end of the guide sleeve ( 114 ). 36. Sharpener according to one of the preceding claims, characterized in that the support section ( 430 ), in particular axially, is supported on a housing section, in particular on a substantially radially extending housing wall section. 37. Pencil sharpener according to one of the preceding claims, characterized in that a housing insert ( 108 ) is provided. 38. Pencil sharpener according to one of the preceding claims, characterized in that the housing insert ( 108 ) is designed in several parts, in particular in two parts. 39. Pencil sharpener according to one of the preceding claims, characterized in that the housing insert ( 108 ) has a parting plane which is oriented substantially perpendicular to the longitudinal axis. 40. Pencil sharpener according to one of the preceding claims, characterized in that at least three cam guide surfaces ( 448 , 450 , 452 ) are arranged on or in the housing insert ( 108 ). 41. Sharpener according to one of the preceding claims, characterized in that at least two cams ( 438 , 440 , 442 ) are arranged within the housing insert ( 108 ). 42. Sharpener according to one of the preceding claims, characterized in that at least one cam ( 438 , 440 , 442 ) is supported axially on the housing insert ( 108 ), in particular on the inside of the housing insert ( 108 ). 43. Sharpener according to one of the preceding claims, characterized in that at least two cam disk guides ( 448 , 450 , 452 ) are provided in the housing insert ( 108 ). 44. Pencil sharpener according to one of the preceding claims, characterized in that the housing insert ( 108 ) has axially on both sides a substantially radially extending wall ( 458 , 460 ) which is each provided with an, in particular elliptical, through-opening ( 466 ) and through which the guide sleeve ( 114 ) extends. 45. Sharpener according to one of the preceding claims, characterized in that the support section ( 430 ), in particular axially, is supported on a radially extending wall ( 458 , 460 ) of the housing insert ( 108 ). 46. Pencil sharpener according to one of the preceding claims, characterized in that a wall of a through opening ( 456 ) which is provided in a radially extending wall ( 458 ) of the housing insert ( 108 ) is a guide surface. 47. Sharpener according to one of the preceding claims, characterized in that at least one cam ( 438 , 440 , 442 ), and in particular a cam set ( 434 ), such as a one-piece cam set ( 434 ) with a plurality of cams ( 438 , 440 , 442 ), radially has an axially extending opening on the inside, and this cam plate ( 438 , 440 , 442 ) or this cam plate set ( 434 ) with this opening is placed on the guide sleeve ( 114 ). 48. Sharpener according to one of the preceding claims, characterized in that at least three cams ( 438 , 440 , 442 ) are integrally connected to the guide sleeve ( 114 ). 49. Pencil sharpener according to one of the preceding claims, characterized in that the housing ( 103 ) is sealed, in particular at the ends or on both sides. 50. Sharpener according to one of the preceding claims, characterized in that at least two cam guides ( 448 , 450 , 452 ) are arranged at an angle of 120 degrees to one another.