EP2355943B1 - Wedge drive - Google Patents

Description

The invention relates to a wedge drive according to the preamble of claim 1.

Wedge drives are used in tools in metalworking, eg. B. used in presses. Associated with these wedge drives are usually the punching or otherwise deforming enabling facilities. A conventional wedge drive has an upper guide part comprising a slider element and a slider guide element and a lower guide part comprising a driver element and vice versa. The wedge drives are moved by the slider guide member by a, a generally vertical pressing force applying drive. On the part of the driver element wedge drives are mounted in the tool or the press on a base plate on which the workpiece to be machined is placed directly or via a corresponding support means.

From the DE 26 40 318 B2 is a wedge drive for redirecting a vertical pressing force in a, for the forming process this angularly acting force known. This wedge drive consists of a drive wedge on which a vertical force of a corresponding work press acts and a slide wedge, which transmits the force to the horizontal. The driver wedge and slide wedge run either on a rounded cooperating Range or in another embodiment via a roller.

From the DE 24 39 217 A1 a wedge press with a prism-shaped wedge guide is known, wherein the contact surfaces are roof-shaped or channel-like and with the roof or gutter extending over the entire pressure-receiving width of the wedge.

From the DE 23 29 324 B2 is a wedge press with a device for preventing unwanted movements of the wedge with a prism-shaped wedge guide known.

Usually, overhead wedge drives used in the body industry consist of a driver, a slider, and a slider receiver. On the top of the slider recording acts a vertical force that pushes the slider recording down. The driver is firmly anchored in the tool, so that when pressing on the slide holder, the slide anchored in the slide holder is pushed in any direction outside the vertical working direction.

Frequently, overhead wedge drives are used. In this design, the slider depends in his leadership movable in the slide holder. The driver sits rigidly in the lower part and specifies the working direction of the slider. During the downward stroke of the press, the spring-loaded slider sets on the driver and is pushed by the continuing slide holder over the driver surface in the working direction.

The known from this prior art wedge drives have disadvantages, so that the slide used often have short life and due to their constructive Structure are exposed to high wear. They therefore often have to be replaced after short running times, because they show signs of wear, so that an exact deflection of the vertical pressing forces is no longer possible, which leads to unacceptable tolerances in metalworking.

From the DE 197 53 549 C2 is known a wedge drive, which is produced in a continuous industrial production process and should have long service lives. For guiding the slide in the slide holder angle brackets are present, which are formed of bronze and have mounted on the angle bar sliding elements made of graphite. In general, this wedge drive for deflecting a vertical pressing force with a driver, a slider and a slider receiving equipped, the driver has a prismatic guide and the travel of the slider on the driver is shorter than the travel of the slider on the slider recording and the ratio of the paths to each other is at least 1 to 1.5 and the angle α between the traverse paths is 50 ° to 70 °. In such a slider, the driver element has a prismatic surface, wherein the flanks of the prismatic surface are formed sloping outwardly. In addition, this wedge drive has forced return brackets on two opposite sides in respective grooves of the slider element and the driver element. In this way, in the case of a breakage of the slider element in its starting position retrieving spring element ensures a return of the slider element at spring break and thereby to avoid tearing out of screwed punching elements. The slider element is attached to the slider guide member via the angle brackets and retaining screws and can be moved along the angle strips relative to the slider guide element.

From the US 5,101,705 Another wedge drive is known in which the slide element hangs on angle strips or by means of which it is attached to the slide guide element. In this case, it is necessary for the adjacent plates or elements required for fastening to be precisely ground in order to guarantee the running play required between slide element and slide guide element. In this wedge drive as well as in the other known wedge drives in which slide guide element and slide element are interconnected via angle strips and screws is disadvantageous that all tensile forces are introduced into the screws, which in particular at the moment by an extension of the screws or the this surrounding material takes place, the running clearance of the mutually moving slider guide elements and slide elements is impaired. This subsequently leads to a poorer stability, since the wear is particularly increased due to the bracing of the tool in this area. In addition, it proves to be disadvantageous that the slider element can not expand laterally when heated, since it is narrowed by the angle strips in this regard. This can also lead to increased wear of the tool.

From the EP 1 197 319 a wedge drive is known in which the slider element and the slider guide element are held together by means of guide clips. As a result, it should not be necessary to exactly grind additional angle strips or other, connecting these two elements devices to guarantee a required running clearance. In addition, the running play is not impaired even when the wedge drive or the tool is heated, since not only manufacturing tolerances but also occurring expansions of the material due to the connection via a guide clip can be caught. The stability of the wedge drive is therefore no longer impaired or shortened. Despite the omission of a grinding high running accuracy can be achieved. The guide brackets engage in this form-fitting manner in the slider guide element, whereby the slide member depends on the guide guide elements on the slide guide element via this positive engagement. As a result, it is not necessary to provide a grip on the slider guide element via screws, which are on the one hand wear-prone and on the other hand can cause an already mentioned impairment of the running clearance when heated.

From the US 6,990,844 is also known a wedge drive, in which for the coupling of the slide wedge with the slide bed two elongate plates are provided, which are laterally attached to the slide bed. By this arrangement, it should be possible to replace the elongated plates without having to remove the entire wedge drive from the tool in which the wedge drive is arranged.

The JP 2003/080326 A also discloses a wedge drive for a press. In order to enable a simpler removal of the wedge drive from the tool is provided that the slide bed is formed in several parts and the items are fastened to each other for the intended use by means of screws, whereby the functionality of the wedge drive is ensured.

The object of the invention is to provide a wedge drive in which the bronze material insert is reduced, the power transfer area is optimized and which has a more stable slide bed area.

The object is achieved by a wedge drive with the features of claim 1.

Advantageous developments are characterized in the dependent claims.

According to the invention, the wedge drive consists of three main parts, namely a driver, the slider and the slider guide. In addition, the usual attachments are available as a forced return, sliding plates, a spring, in particular gas spring. The gas spring moves the slide back to the starting position when the press is raised, whereby in the event of failure of the gas spring the forced return pushes the slide back into the starting position. Although the sliding plates have no vital function for the function of the slide, but they reduce the wear or can in case of wear be easily and quickly replaced. In addition, a so-called lock-out system is provided, which sets the slide in the UT position, ie the position of the slide at bottom dead center.

According to the invention, a so-called plug-in strip is used instead of a clamp which connects the upper slide part and lower part to one another, which engages under the slide through openings in the slide bed side walls and holds it in the slide bed. As a result, the force transfer area is optimal, d. that is, that the force application points are much less far away than with a positive engagement with guide bracket, allowing tighter tolerances and also reducing tolerance variations due to thermal expansion. The slider bed becomes more stable and, in addition, a cost reduction can be achieved because the overall construction is more favorable.

The header according to the invention connects the slide bed with the slide form-fitting, wherein the header is secured with screws on the slide bed. These screws are not or only very slightly burdened to a negligible extent.

Figur 1:

eine erste Ausführungsform des erfindungsgemäßen Keiltriebs in einer Draufsicht;

Figur 2:

den Keiltrieb in einer Seitenansicht;

Figur 3:

den Keiltrieb in einer Ansicht von vorne;

Figur 4:

den Keiltrieb von unten;

Figur 5:

eine Seitenansicht des Keiltriebs mit einer eingezeichneten Schnittebene;

Figur 6:

einen Querschnitt des Keiltriebs nach Figur 5 in der Schnittebene A-A;

Figur 7:

eine Detailvergrößerung aus Figur 6;

Figur 8:

Schieberbett und die dazugehörigen Steckleisten in einer Explosionsdarstellung;

Figur 9:

die Detailvergrößerung aus Figur 8;

Figur 10:

eine perspektivische Explosionsansicht des Schiebers, des Treibers, des Schieberbetts und der Steckleisten;

Figur 11:

eine weitere Explosionsansicht des Schieberbetts und einer Steckleiste;

Figur 12:

den Keiltrieb in einer perspektivischen Seitenansicht;

Figur 13:

eine weitere Ausführungsform des erfindungsgemäßen Keiltriebs in einer Draufsicht;

Figur 14:

der Keiltrieb nach Figur 13 in einer Seitenansicht;

Figur 15:

der Keiltrieb nach Figur 13 in einer Ansicht von vorne;

Figur 16:

der Keiltrieb nach Figur 13 von unten;

Figur 17:

eine Seitenansicht des Keiltriebs nach Figur 13 mit einer eingezeichneten Schnittebene;

Figur 18:

ein Querschnitt des Keiltriebs nach Figur 17 in der Schnittebene A-A;

Figur 19:

eine Detailvergrößerung aus Figur 18;

Figur 20:

den Keiltrieb nach Figur 13 in einer perspektivischen Explosionsansicht des Schieberbetts und der Steckleisten;

Figur 21:

Detailvergrößerungen aus Figur 20;

Figur 22:

eine perspektivische Explosionsansicht des Keiltriebs nach Figur 13 umfassend den Schieber, den Treiber, das Schieberbett und die dazugehörigen Steckleisten;

Figur 23:

eine weitere Explosionsansicht des Keiltriebes nach Figur 13 mit den dazugehörigen Steckleisten und dem Schieberbett;

Figur 24:

den Keiltrieb nach Figur 13 in einer perspektivischen Ansicht;

Figur 25:

eine weitere Ausführungsform des erfindungsgemäßen Keiltriebs in einer Draufsicht;

Figur 26:

den Keiltrieb nach Figur 25 in einer Seitenansicht;

Figur 27:

den Keiltrieb nach Figur 25 in einer Ansicht von vorne;

Figur 28:

den Keiltrieb nach Figur 25 von unten;

Figur 29:

eine Seitenansicht des Keiltriebs nach Figur 25 mit einer eingezeichneten Schnittebene;

Figur 30:

den Keiltrieb nach Figur 29 in einer Schnittansicht entlang der Schnittebene A-A;

Figur 31:

eine Detailvergrößerung aus Figur 30;

Figur 32:

den Keiltrieb nach Figur 25 in einer perspektivischen Explosionsdarstellung des Schieberbetts und der Steckleisten;

Figur 33:

zwei Detailvergrößerungen aus Figur 32;

Figur 34:

eine perspektivische Explosionsansicht des Keiltriebes nach Figur 25 zeigend den Schieber, den Treiber, das Schieberbett und die Steckleisten;

Figur 35:

den Keiltrieb nach Figur 25 in einer weiteren perspektivischen Explosionsdarstellung des Schieberbetts und der dazugehörigen Steckleisten;

Figur 36:

den Keiltrieb nach Figur 25 in einer perspektivischen Ansicht;

Figur 37:

eine weitere Ausführungsform des Keiltriebes in einer Draufsicht;

Figur 38:

den Keiltrieb nach Figur 37 in einer seitlichen Ansicht;

Figur 39:

den Keiltrieb nach Figur 37 in einer Ansicht von vorne;

Figur 40:

den Keiltrieb nach Figur 37 in einer Ansicht von unten;

Figur 41:

den Keiltrieb nach Figur 37 mit einer eingezeichneten Schnittebene;

Figur 42:

den Keiltrieb nach Figur 41 in einer Schnittdarstellung entlang der Ebene C-C;

Figur 43:

eine Detailvergrößerung aus Figur 42;

Figur 44:

den Keiltrieb nach Figur 42 in einer perspektivischen Explosionsdarstellung des Schieberbetts mit den Steckleisten;

Figur 45:

eine Detailvergrößerung aus Figur 44;

Figur 46:

eine weitere Explosionsdarstellung des Keiltriebes nach Figur 37 mit dem Schieberbett und den dazugehörigen Steckleisten;

Figur 47:

eine Detailvergrößerung aus Figur 46;

Figur 48:

den Keiltrieb nach Figur 37 in einer Explosionsdarstellung zeigend den Schieber, den Treiber, das Schieberbett und die dazugehörigen Steckleisten;

Figur 49:

eine weitere Explosionsdarstellung des Keiltriebs nach Figur 37 zeigend das Schieberbett und die dazugehörigen Steckleisten;

Figur 50:

den Keiltrieb nach Figur 37 in einer perspektivischen Ansicht;

Figur 51:

ein Schieberbett nach dem Stand der Technik für Klammern;

Figur 52:

ein erfindungsgemäßes Schieberbett;

Figur 53:

ein Schieberbett nach dem Stand der Technik in einer Seitenansicht;

Figur 54:

ein Schieberbett nach der Erfindung in einer Seitenansicht.

The invention will be explained by way of example with reference to a drawing. It shows:

FIG. 1:

a first embodiment of the wedge drive according to the invention in a plan view;

FIG. 2:

the wedge drive in a side view;

FIG. 3:

the wedge drive in a view from the front;

FIG. 4:

the wedge drive from below;

FIG. 5:

a side view of the wedge drive with a marked cutting plane;

FIG. 6:

a cross section of the wedge drive after FIG. 5 in the section plane AA;

FIG. 7:

an enlarged detail FIG. 6 ;

FIG. 8:

Slide bed and the associated connectors in an exploded view;

FIG. 9:

the detail enlargement FIG. 8 ;

FIG. 10:

an exploded perspective view of the slider, the driver, the slider bed and the connector strips;

FIG. 11:

a further exploded view of the slider bed and a connector strip;

FIG. 12:

the wedge drive in a perspective side view;

FIG. 13:

a further embodiment of the wedge drive according to the invention in a plan view;

FIG. 14:

the wedge drive behind FIG. 13 in a side view;

FIG. 15:

the wedge drive behind FIG. 13 in a view from the front;

FIG. 16:

the wedge drive behind FIG. 13 from underneath;

FIG. 17:

a side view of the wedge drive to FIG. 13 with a marked cutting plane;

FIG. 18:

a cross section of the wedge drive after FIG. 17 in the section plane AA;

FIG. 19:

an enlarged detail FIG. 18 ;

FIG. 20:

after the wedge drive FIG. 13 in an exploded perspective view of the slide bed and the connector strips;

FIG. 21:

Detail enlargements off FIG. 20 ;

FIG. 22:

an exploded perspective view of the wedge drive FIG. 13 comprising the slider, the driver, the slide bed and the associated connector strips;

FIG. 23:

another exploded view of the wedge drive FIG. 13 with the associated connector strips and the slide bed;

FIG. 24:

after the wedge drive FIG. 13 in a perspective view;

FIG. 25:

a further embodiment of the wedge drive according to the invention in a plan view;

FIG. 26:

after the wedge drive FIG. 25 in a side view;

FIG. 27:

after the wedge drive FIG. 25 in a view from the front;

FIG. 28:

after the wedge drive FIG. 25 from underneath;

FIG. 29:

a side view of the wedge drive to FIG. 25 with a marked cutting plane;

FIG. 30:

after the wedge drive FIG. 29 in a sectional view along the sectional plane AA;

FIG. 31:

an enlarged detail FIG. 30 ;

FIG. 32:

after the wedge drive FIG. 25 in an exploded perspective view of the slide bed and the connector strips;

FIG. 33:

two detail enlargements FIG. 32 ;

FIG. 34:

an exploded perspective view of the wedge drive FIG. 25 showing the slider, the driver, the slide bed and the connectors;

FIG. 35:

after the wedge drive FIG. 25 in a further perspective exploded view of the slide bed and the associated connectors;

FIG. 36:

after the wedge drive FIG. 25 in a perspective view;

Figure 37:

a further embodiment of the wedge drive in a plan view;

Figure 38:

after the wedge drive FIG. 37 in a side view;

FIG. 39:

after the wedge drive FIG. 37 in a view from the front;

FIG. 40:

after the wedge drive FIG. 37 in a view from below;

FIG. 41:

after the wedge drive FIG. 37 with a marked cutting plane;

Figure 42:

after the wedge drive FIG. 41 in a sectional view along the plane CC;

FIG. 43:

an enlarged detail Figure 42 ;

FIG. 44:

after the wedge drive Figure 42 in a perspective exploded view of the slide bed with the connectors;

Figure 45:

an enlarged detail FIG. 44 ;

Figure 46:

a further exploded view of the wedge drive after FIG. 37 with the slide bed and the associated connectors;

FIG. 47:

an enlarged detail FIG. 46 ;

FIG. 48:

after the wedge drive FIG. 37 in an exploded view showing the slider, the driver, the slide bed and the associated connectors;

Figure 49:

a further exploded view of the wedge drive FIG. 37 showing the slide bed and the associated connectors;

FIG. 50:

after the wedge drive FIG. 37 in a perspective view;

FIG. 51:

a slider bed of the prior art for brackets;

FIG. 52:

a slide bed according to the invention;

FIG. 53:

a slide bed according to the prior art in a side view;

FIG. 54:

a slide bed according to the invention in a side view.

An inventive wedge drive 1 has a slide bed 2, a slide wedge 3 and a driver 4 as main components.

The slide bed 2 is a box-shaped component with a top wall 6, of which orthogonal wegerstreckenden side walls 7, a front end wall 8 and a rear side wall 9. The end wall 8 and the rear side wall 9 parallel to each other and orthogonal to the top wall 6 while the side walls 7 perpendicular or orthogonal to the top wall 6 and the end wall 8 and 9 back wall.

In the upper side wall 6, a feather key 10 is provided for adapting the slide bed into a tool, which is elongated cuboid and is arranged in a corresponding keyway 11 in the upper side wall 6.

Parallel to the upper side wall 6 and at right angles to the side walls 7 and the rear side wall 9, a lower wall 12 extends from a common edge with the rear side wall 9 away.

The end wall 8 extends from the upper side wall 6 over approximately ¼ of the extent of the rear side wall 9 parallel to the rear side wall 9. From the Stirnseitenwandung 8 extends parallel to the upper side wall 6 and perpendicular to the side walls 7 a Stirnunterseitenwandung 13 over about a 1/6 of the length the upper side wall to the rear wall 9 back. The side facing away from the rear wall 9 edge of the bottom 12 and facing away from the end wall 8 edge of the front bottom 13 are connected by free, obliquely to the top 6 extending edges 14 of the side walls 7.

In the area of the free longitudinal edges of the side walls 7 between the walls 12, 13, a recess 15 extends into the slide bed 2. The recess extends a piece parallel to the side walls 7 and ends with a roof-shaped surface sixteenth

In the roof-shaped surface 16 grooves 17 are introduced, which are elongated rectangular. In the grooves 17 sliding elements 18 are introduced which are also elongated rectangular cuboid and project with one sliding surface 19 through the grooves 17 and the roof-shaped surface 16.

Adjacent to the end wall 8 and the rear side wall 9 three holes are present in the upper side wall 6 of the slide bed 2, wherein the holes are arranged in their succession parallel to Stirnseitenwandung 8 or Rückseitenwandung 8 in the vicinity and the holes orthogonal to the top 6 are made continuous , The outer holes 22 serve here as screw holes for the slide bed 2 on a tool upper part while the middle holes 23rd Pin holes are that are used in a conventional manner.

Adjacent to the free longitudinal edges 14 of the side walls 7, flat grooves 25 are introduced, which extend in approximately over half the thickness of the side wall 7 in the region of the recess 15 in the side wall 7. These grooves are elongated, rectangular in shape and extend in the region of the lower wall 12 slightly beyond the free longitudinal edges 7 and in the region of the front side wall 13 also a piece on the free longitudinal edges 14 of 7 out.

Along the longitudinal center of the groove 25 three bearing openings 26 are provided, which are elongated rectangular with rounded edges and extend with their longitudinal extent along the longitudinal extent of the groove 25. In addition, in the region of the groove bottom, there are diametrically opposite mounting holes 27 with respect to the juxtaposition of bearing openings 26.

The grooves 25 and the bearing openings 26 are intended for receiving plug-in strips 30, whose operation will be explained later.

The plug strip 30 is an elongate, plate-shaped element having an outer side 31, an inner side 32, longitudinal side edges 33 and end edges 34.

The header 30 has a longitudinal extent which is slightly smaller than the longitudinal extent of the grooves 25 and in the region of the end edges 34 slightly adjacent thereto and along the longitudinal center each have a slot 35 which serves the header 30, each with a bolt through the Mounting holes 27 in the groove 25 to be arranged longitudinally displaceable.

On the inside 32 of the connector strip 30 with respect to the longitudinal extension bearing cam 36 are arranged one behind the other. The bearing cams are box-shaped or parallelepiped-shaped elements with a width at the base which corresponds approximately to the width of the bearing openings 26 or slightly smaller and a length along the longitudinal extension of the connector strips 30 which is less than the longitudinal extent of the bearing openings 26 by a longitudinal displacement to ensure. The bearing cam 36 spaced from the inside 32 each have a chamfer 37 on each broadside surface, wherein the chamfers 37 in the same direction, d. H. are executed parallel to each other. Thus remains on the bearing cam 36 adjacent to the inside 32 a base with a height which corresponds approximately to the thickness of the side wall 7 in the region of the groove 25 to receive the bearing cam. A in the inserted state of the header to the free longitudinal edge 14 facing longitudinal edge 38 forms together with a bearing cam 36 facing the longitudinal edge of the opening 26 from a first camp. The bevel 37 facing away from the longitudinal edge 38 forms a support for the slide wedge 3 to be described later.

In the assembled state, the plug-in strip 30 lies with its inner side 32 on the groove bottom of the groove 25, wherein the bearing cam 36, the openings 26 pass through and project with the areas having slopes 33, inwardly into the opening on the side wall 7.

The slide wedge 3 is also a box-shaped component with a width which corresponds approximately to the width of the slide bed 2. The slide wedge 3 has a rear side wall 40 and perpendicular thereto extending away from the rear side wall 40 Side walls 41. In addition, the slide wedge 3 has a rear side wall 40 and the side walls 41 connecting, narrow Oberseitenwandung 42. The Oberseitenwandung 42 extends here a piece perpendicular to the rear wall 40 and then extends a narrow piece with a kink 43 upwards. In addition, the slide wedge 3 has a bottom wall 44, which extends perpendicular to the rear side wall 40 and the side walls 41 of the rear side wall 40, over a seen from the rear wall 40 from double length of the upper side wall 42. From the bottom wall 44 extends to the rear wall 40th parallel to a short, front wall 45, which merges at a bent edge 46 in an inclined surface 47 which extends to the top wall 42 and connects with the bottom wall 44. Centrally centered along the longitudinal extent of the inclined surface 47 is an arrow-shaped in cross-section rail 48 integrally formed. This arrow-shaped rail 48 thus has a base web 49 extending away from the oblique surface 47 and a roof-shaped element 50 thereon in cross-section or in the view. This roof-shaped element 50 thus forms two inclined roof surfaces 51 with side surfaces 52. Between the side surfaces 52 and the inclined surface 47, the roof-shaped element 50 and the inclined surface 47 each have a groove 53 is formed by the web 49. The roof-shaped surface 50 has a width which is smaller than the width of the slide wedge 3.

In the region of the web 49, a per se known gas spring 54 is arranged along the longitudinal extent of the cross-section arrow-shaped rail 48, which is above the element 48 in the region of the upper side wall 42 addition.

The cross-sectionally arrow-shaped rail 48 or the roof-shaped element 50 and thus the oblique roof surfaces 51 have a, to the opening 16 and to the sliding elements 18 and the groove 16 corresponding shape, so that when inserting the slide wedge 3 in slide bed 2, the surfaces 51 abut the sliding surfaces 18. When the plug-in strips 30 are mounted, the oblique surfaces 37 engage behind the grooves 53 and rest on the underside of the roof element 50 in the area of the surfaces 52, so that the slide wedge 3 is held on the slide bed 2. The underside 55 of the roof-shaped element in the region of the groove facing inclined surface 37 and the surface 55 form the second bearing with which, in cooperation with the first bearing between the opening 26 and the edge 38 of the slide wedge 3 in the slide bed 2 is stored. The storage takes place here along the bearing cam longitudinally displaceable, wherein the gas pressure spring is arranged to move the slide wedge in an initial position.

In the bottom wall 44, a roof-shaped surface 57 is introduced which extends over the longitudinal extent of the bottom surface 44 from its side edges with the side surfaces 41 equidistant.

In the roof-shaped surface 57, both sides of a vertex or apex portion longitudinally extending grooves 58 are introduced into the correspondingly shaped sliding elements 59 are used, which each project slightly beyond the grooves 58 also.

In extension of the side walls 41 approximately in the longitudinal center of the side walls 41 is on the bottom wall 44, extending the side walls 41 depending on a per se known Zwangsrückholer over which extends a distance from the bottom wall away and hook-like with an inward or parallel to Bottom wall 44 facing hook legs is formed.

In addition, the wedge drive 1 comprises the so-called driver 4. The driver 4 is also a box-like elongated member having a bottom wall 63 as Aufstanzfläche, two Stirnseitenwandungen 64, 65 which are mutually parallel and orthogonal to the bottom wall and two side walls 66 perpendicular to the bottom wall and run the end walls.

The driver 4 has an inclined to the bottom wall 63 and in particular slightly sloping top wall 67 which is roof-like with respect to its longitudinal extent sloping to the side walls 66 oblique surfaces 68 and is formed corresponding to the roof-shaped surface 57 in the bottom wall 44 of the slide wedge 3, so that in the assembled state, the surfaces 68 abut the sliding elements 59.

Approximately transverse to the sidewalls 66 is an outwardly facing projection 69 adjacent to the common edge of the sidewalls 66 and top wall 67 which is cooperatively formed with the positive repeater 60 in such a manner that upon displacement of the slider wedge 3 on the driver 4 such that the slide wedge 3 runs down on the slope, the positive repeater 60 engages around the projection 69 and thus couples the slide wedge on the driver against each other. The coupling takes place compulsorily until the slide has driven back its stroke. Only then does the coupling open.

In the bottom wall 63 of the driver 4 also screw holes 70 and pin holes for a lower part 71 are arranged. Thus, the slide bed 2 can be attached to a tool top and the driver to a tool base during the slide wedge 3 is displaceable both along the sliding elements 18 and along the sliding elements 59.

It is essential to the invention that the slide wedge 3 is held on the slide bed 2 via the connector strips 30, wherein according to the invention, the sliding coupling is effected in that the groove 53 runs in the bearing cam 36, wherein the bearing cam 36 in turn in openings in the side wall 7 of the slide bed 2 supported. As a result, in contrast to wedge drives with brackets, the distance between the different force introduction points - in the invention, these are the first and second bearings - very much shortened, so that very tight tolerances are possible and heat-related strains have a significantly lower impact.

In addition, this embodiment of the invention also allows increased stability and stability of a wedge drive.

In addition, it is advantageous that the use of bearing bronze, which is relatively expensive in contrast to the casting material is reduced and also depending on the design of the header and the sloping surfaces 37 of the headers 30, the headers can be added in wear not only in the longitudinal direction, but can also be exchanged from the right to the left side and vice versa, since their "unused" inclined surfaces 37 can be used. However, this requires that the headers are formed symmetrically.

In a further advantageous embodiment ( FIGS. 13 to 24 ), the groove 25 is formed widened, wherein the mounting holes 35 of the header 30 are arranged laterally offset from the bearing cam 36 and in cross section the Plug strips 30 with the bearing cam 36 give an approximately L-shaped cross-section ( FIGS. 18, 19 ).

However, the function of the bearing cam 36 itself is the same as in the previous embodiment, only the attachment points of the connector strips 30 on the slide bed 2 are displaced from the region of the opening 16 in the solid part of the slide bed 2. Otherwise, the stated for the first embodiment applies.

In a further advantageous embodiment ( FIGS. 25 to 36 ), the functions are substantially similar to the previous embodiments, so that the said applies to the exceptions described below.

In this embodiment, the groove 25 is adjacent to the openings 26 and between the openings 26 and the free edge 14, the side wall 7 bounded by a web 28 or in this area the side wall 7 is fully formed. From the web 28 extends to the groove interior of the groove 25 out between the openings 26 depending on a web 29 in the area also the wall material has a, in particular the same wall thickness as the side wall 7 in the region of the opening 16. Thus, the force receiving area, in particular of the first Bearings more stabilized.

In order to arrange a corresponding header 30 here, the header 30 is formed wider than the webs 29 are long and in particular has a basic basic shape as in the embodiment described above. The recesses 39 in the connector strip 30 for receiving the webs 29 are in particular somewhat deeper and slightly wider than the webs 29 to ensure a longitudinal displacement of the connector 30 despite existing webs 29.

In this embodiment, therefore, in particular the area between the bearing openings 26 is reinforced by the material forming the slide bed 2.

In a further advantageous embodiment ( FIGS. 41 to 50 ), the basic components and their functions are substantially identical, but in this case a wear compensation of sliding surfaces between slide bed 2 and slide wedge 3 or surfaces 37 of the header and surfaces 55 of the slide wedge is not generated by the fact that by the inclined surfaces 37 of the cam 36 on the one hand and the displacement of the header 30 and on the other hand, the Verscheiß is compensated, but the entire header is shifted in its orientation to the side walls 7 so that the cams 36 are moved toward the surfaces 55 of the slide wedge 3.

In this embodiment, a web 28 is present, wherein the web 28 with its groove facing surface is not parallel to the edge 14, but in the region of the openings 26 has slopes 28 b, the steps 28 a to the next slope 28 b in the region of the next bearing opening 26th fall off.

The header 30 has along a longitudinal edge 33b via corresponding inclined surfaces 33b which drop with steps 33a, which are opposed to the steps 28a in the assembled state to the next slope.

The bearing openings 26 are also slightly tilted relative to the edge 14 according to the pitch of the slope portions 28b, so that when moving the header 30, the cams 36 are moved closer to the roof-shaped surface 16 according to the slope, which means when mounted slide wedge 3, that the wear Game is balanced.

The surfaces 37 of the cams 36 can likewise be tapered in accordance with the course of the bevels 28b, whereby the movement of the cams 36 on the roof-shaped surface 36 is enhanced. Alternatively, however, the oblique surfaces 37 may also be formed so that the slope runs counter to the slope of the surfaces 28b, so that the surfaces 37 abut the surfaces 55 more particularly and in particular over their entire surface.

Which in turn means that it is possible to further reduce the wear between the surfaces 37 and 55 by the full-surface concerns.

As in FIGS. 42 and 43 it can be seen, the sliding elements 18 are held by means of screw in the corresponding grooves, with corresponding threaded holes 18a in the slide bed 2 are present.

In all embodiments, screws can be present on the slide bed 2, which by screwing along the longitudinal extension of the connector strips 30 and acting on an end edge of the connector strips 30, the connector strip 30 can move, with bolts which are screwed through the slots 35 in the mounting holes 27 , which can set the connector strips 30 on the slide bed 2. In order to possibly relieve the screw (not shown) for moving the connectors 30 and / or facilitate the determination of the headers in the assembled state, the header can be provided on the inside with a fine toothing or ribbing or a similar surface treatment to the sliding friction after suit To increase the mounting screws considerably, of course, the groove bottom can have a corresponding surface treatment.

The advantages of the invention over the prior art are based on the slide bed 2 in the FIGS. 51 to 54 to see. In a conventional staple pusher, the pusher bed is designed to be relatively open, with a clamp being placed laterally which engages claw-like in grooves of the pusher wedge. This clamp is in turn screwed to the slide bed.

When slide bed 2 according to the invention ( FIGS. 52 to 54 ), the side walls 7 are pulled out far beyond the roof-shaped surface of the slide bed 2 and serve as a guide of the slide wedge 3, wherein the fact that the extended side walls of the very stable material of the slide bed 2, a high stability is given. Thus, the task of the headers 30 can be reduced to the actual purpose, namely the pressing and holding the slide wedge 3 on the slide bed 2, which also means a significant reduction in the use of bearing bronze.

Although the invention has been explained with reference to a slide hanging above, it is not limited thereto. The invention is of course also applicable to down-running slider with equal success.

LIST OF REFERENCE NUMBERS

1

cotter

2

slider bed

3

guide post

4

driver

6

Top of 2

7

Side wall of 2

8th

End wall of 2

9

Rear wall of 2

10

Adjusting spring

11

keyway

12

lower wall

13

front face wall

14

free longitudinal edge of 7

15

recess

16

roof-shaped area

17

groove

18

Sliding elements

19

sliding surface

22

Bolt-

23

pin hole

25

groove

26

bearing openings

27

Mounting hole / pin holes

30

Headers

31

Outside of 30

32

Inside of 30

33

Longitudinal edge of 30

34

Front edge of 30

35

Long hole of 30

36

Bearing cam of 30

37

bevel

38

longitudinal edge

40

Rear wall of 3

41

Sidewall of 3

42

Top wall of 3

43

Bending edge in 42

44

bottom walls

45

short, front wall

47

sloping surface

48

arrow-shaped rail

49

base web

50

roof-shaped element

51

roof

52

side surface

53

groove

54

Gas spring

55

Storage area v. 50

57

roof-shaped area in 44

58

groove

59

Sliding elements

60

positive return

63

Bottom wall of 4

64

End wall of 4

65

End wall of 4

66

sidewalls

Claims (6)

1. A wedge drive (1) for converting a vertical pressing force, including at least one slider bed (2), one slider wedge (3), and one driver (4), characterized in that in order to provide a movable coupling of the slider wedge (3) in the slider bed (2), at least one bearing lug (36) is provided; the bearing lug (26) reaches through at least one bearing opening (26) in a side wall (7) of the slider bed (2) from the outside and engages in a recess in the slider wedge (3); the slider wedge (3) is supported on the bearing lug (36) and the bearing lug (36) is supported on a wall delimiting the bearing opening (26).
2. The wedge drive as recited in claim 1, characterized in that several bearing lugs (36) are situated on a plate-like connector strip (30) and the connector strip (30) is situated resting against the outside of a side wall (7) and the bearing lugs (36) each reach through a respective bearing opening (26) and protrude inward into an opening (16) of the slider bed (2) into which the slider wedge (3) extends, and engage in a bearing groove (53) of the slider wedge (3).
3. The wedge drive as recited in claim 1 or 2, characterized in that there are two connector strips (30) that engage in diametrically opposing fashion in bearing grooves (53) of the slider wedge (3) situated on opposing side walls.
4. The wedge drive as recited in one of the preceding claims, characterized in that the bearing lugs (36) are arranged in longitudinally movable fashion in the bearing openings (26).
5. The wedge drive as recited in one of the preceding claims, characterized in that on opposite sides facing away from each other, the bearing lugs (36) have bearing surfaces (38), which rest against walls of the bearing openings (26), and bearing surfaces (37) for supporting the slider wedge (3) are also provided directly adjacent to these bearing surfaces, on opposite sides of the bearing lugs (36) facing away from each other.
6. The wedge drive as recited in one of the preceding claims, characterized in that the surfaces (38) are oriented parallel to each other, the surfaces (37) are oriented parallel to each other, and adjacent surfaces (37, 38) are situated at an angle to each other.

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