ES2654546B2 - EXTRUSION PRESS - Google Patents

Abstract

Extrusion press # The invention is based on the basic idea that the influence of moments and forces, caused by extrusion, on the rest of the extrusion press can be minimized because they are absorbed as much as possible by the play of own requested modules, which can happen in particular because a certain strike is allowed with respect to the stationary modules, such as the frame, and still as accurate a guide as possible is preserved.

Description

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DESCRIPTION

EXTRUSION PRESS

Description of the invention.

The invention relates to an extrusion press. Background of the invention

Such extrusion presses are known for example from EP 0 379 937 A2 and serve to extrude metal billets by means of a die. In this regard, the extrusion press comprises, as a rule, a die, a container, which wraps and houses the billet to be extruded during extrusion, so that it can only deflect extrusion forces through the die , and a punch that can move with respect to the container and the die, through which the extrusion forces that are usually introduced by a main cylinder, which is preferably a plunger cylinder, can be applied in the extrusion press. In this case, as a frame of the press, a frame with at least one cylindrical stringer, and a complementary stringer, which are connected to each other by means of prestressed anchors, are usually used, the main cylinder being provided on the cylindrical strut and the die being provided in the complementary crossbar. Typically, these anchors comprise traction elements that act between the cylindrical beam and the complementary beam and compression pieces that act between the cylindrical beam and the complementary beam.

In this case, it is possible to distinguish between direct extrusion presses, in which the punch protrudes relatively much towards the die and penetrates during extrusion into the container, indirect extrusion presses, in which the die is arranged in a die, which penetrates during extrusion in the container, as well as special procedures, such as hydrostatic presses. A few embodiments of these extrusion presses, for example, continuously operating extrusion presses, have both a long, shaped punch and a punch. It is understood that, in particular also in the case of extrusion presses that operate continuously, the matrix itself can move with respect to the frame during extrusion. If necessary, a displacement capacity of the punch can be dispensed with when, for example, all movements are reversed; likewise, both the punch and the die can be naturally configured in an axially displaceable manner. The same applies to the container, which may be designed in particular for the purpose of

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axially displaceable load with respect to the die and / or the punch and, if necessary, can also follow an understanding movement, moving axially with respect to the frame.

The modules requested therefore during extrusion by forces and moments caused by the extrusion, such as in particular the container, the die or the punch and if necessary other additional modules, have to be guided, if they can move with respect to the frame or with with respect to the other modules, scrollable in a guide. This does not have to happen immediately, but also indirectly through corresponding modules, which in turn carry these modules. Thus, as a rule, a container carrier is provided, which holds the container and guided in the frame. Likewise, the punch will generally be arranged in a container carrier, guided in turn in the frame. Also in the case of a matrix or other modules, corresponding supports or stringers can be provided, then guided accordingly.

The guide will often comprise a guiding device, generally providing two guiding devices provided on both sides of the respective module or even three or more guiding devices, if necessary also several such guiding devices, in order to also cope at appropriate times appropriately. Such guidance devices comprise, as a rule, a guide piece on the side of the module, which is arranged in the corresponding module through a guide piece holder provided in the corresponding module, this part piece carrier can be configured. guided given the case also of a single piece with the module that will guide. In addition to this, the guiding device will also present a guide piece on the side of the frame, which interacts with the guide piece on the side of the module guiding it and is fixed on the frame. As a guide piece on the side of the module, in particular, slides, skates, but also corresponding bearings are used, then used as guide pieces on the side of the frame, as a rule, correspondingly complementary guide rails. It is understood that such concrete configurations, if necessary, can also be provided in reverse.

In addition, such modules, which are requested during extrusion by forces and moments caused by extrusion, are frequently operated through a motor drive, using here according to the concrete realization - electromotors or hydraulic drives of any type. In this regard, the motor drive can act in a

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drive point on the side of the module, which is arranged in each case in a carrier of the drive point in the corresponding module, this carrier of the drive point may also be configured in the case of a single piece with the mobile stringer or the container carrier or one piece with the module to be operated. In detail, for example, a motor driven drive pin and a rack, in which the drive pin engages, can be used for motor drive. It is understood that several such drive pins from different sides can also act on the module to be moved, in particular to avoid tilting moments that are too large, which are present during the drive through this motor drive.

Consequently, the moments and forces caused by parts of the extruder press during their operation affect in a lower precision and a lack of uniformity of the guidance and actuation of the guide piece carrier or the drive point carrier.

Description of the invention

The objective of the present invention is to minimize the influence of moments and forces, caused by extrusion, on the rest of the extrusion press.

The object of the invention solves by means of an extrusion press with the characteristics of the independent claims the problems caused by vibrations in parts of the press due to moment and forces. Other advantageous configurations, if necessary also independently thereof, are found in the dependent claims as well as in the description that follows.

In this regard, the invention starts from the basic idea that the influence of moments and forces, caused by extrusion, can be minimized in the rest of the extrusion press because they are absorbed by the presence of the game of the requested modules themselves, what can happen in particular by allowing a certain strike with respect to stationary modules, such as the frame, and still retaining as accurate guidance as possible.

In a concrete realization of this basic idea, the influence of moments and forces, caused by extrusion, on the rest of the extrusion press, when an extrusion press is extruded to extrude a billet by means of a die with a die

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container and with a punch that can move with respect to the container and the matrix, at least one module of the extrusion press being guided, requested during extrusion by forces and moments caused by extrusion, in a movable way along a guide , which comprises at least one guiding device, the guiding device comprising a guiding part on the module side and the guiding part being arranged on the side of the module in a guiding piece holder in the corresponding module, is characterized because the guide piece holder is placed in each case separately in the corresponding module.

Likewise, the influence of moments and forces, caused by extrusion, on the rest of the extrusion press, when an extrusion press is extruded to extrude a billet by means of a matrix with a container and a punch that can move with respect to the container and the matrix, being operated at least one module of the extrusion press, requested during extrusion by forces and moments caused by the extrusion, motor through a motor drive, the motor drive acting at a drive point in the side of the module and the drive point being arranged on the side of the module in each case in a drive point carrier in the corresponding module, is characterized in that the drive point carrier is placed separately in the corresponding module.

Direct and indirect extrusion presses are considered as extrusion presses, since correspondingly large extrusion forces act on such presses on certain modules of the direct or indirect extrusion press. Also in hydrostatic presses there are modules subject to correspondingly large extrusion forces, so that the solutions explained herein can be applied here. It is also conceivable to apply the solutions explained herein also in the case of punch presses or other presses of correspondingly advantageous way.

It is understood that, if necessary, several guiding devices or motor drives can be arranged on both sides of the respective module requested, so that then several guiding devices or motor drives can be correspondingly provided, which present in each case a guide piece on the side of the module or a drive point on the side of the module, which are placed in each case in a guide piece carrier or carrier of drive point in the corresponding module.

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As already stated at the beginning, as a requested module, a container carrier, which holds the container, or a mobile beam, which supports the punch, can be used in this particular case. On the other hand it is understood that also the container or the punch can directly represent the requested module. It is understood that, if necessary, additional modules, requested during extrusion by forces and moments caused by extrusion and guided in a moveable way along a guide or motor driven by a motor drive, may correspondingly present as a module requested guiding part bearers or drive point bearers placed separately. For this purpose, for example, the matrix is considered, or a corresponding die or a corresponding bearing or carrier beam. It is also conceivable that valves, joints or ducts, which must influence the extruded material and therefore are requested during extrusion equally by forces and moments caused by extrusion, can be configured accordingly.

As a guide piece on the side of the module, as sliders, skates or slide rails, but also bearings of any type are considered, as already discussed above. Correspondingly, the complementary guide pieces on the frame side may then be guide rails or the like, and in this case there may also be an inversion between the guide pieces on the module side and on the side of the frame. In the present context, the guiding parts are therefore defined as those modules of a guide or guiding device, which are immediately in movable contact with each other and which absorb guiding forces.

The same is also applied analogously to the drive point on the module side or the drive point on the side of the frame, which, in relation to the drive, represents the two modules that can move relative to each other and that transmit forces, moving the drive point on the side of the module, for example as a rack or as a plunger, together with the module in motion or requested, while the drive points on the side of the frame remain stationary in the corresponding frame and, for For example, they can be configured as a rack or cylinder. It is understood that here too, if necessary, there may be an exchange between drive points on the module side and drive points on the frame side, so that for example the rack or also a

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cylinder can be provided on the side of the module and a drive pin or a corresponding plunger on the side of the frame.

The guide piece on the side of the module and the guide piece on the side of the frame then together form the guiding device. Therefore, the drive point on the module side and the drive point on the frame side act together on the motor drive, which, however, also comprises a motor, regardless of whether it is driven in electric, pneumatic or hydraulic way, in particular hydrostatic or hydrodynamic.

The guide piece on the module side is then arranged in each case in a guide piece carrier or the drive point on the module side in each case in a drive point carrier, the part carrier must be placed of guidance or the carrier of drive point in each case separately in the corresponding module, which therefore minimizes the influence of moments and forces, caused by extrusion, on the rest of the extrusion press.

As a guide piece carrier or as a drive point carrier, for example, plates, bolts, support profiles and similar structures placed of different natures can be used. In particular, a drive card or a guide card can be used correspondingly, provided that they are placed separately in the corresponding requested module.

The placement of the guide piece carrier or the drive point carrier enables a certain play with respect to stationary modules, such as the frame, and even in this way a guide as accurate as possible or a drive as precise as possible. By means of the placement, a strike is left correspondingly, the active union between the guide piece carrier or the drive point carrier and the corresponding requested module can be configured even so that, in the respective direction of guidance or in the respective drive direction, an active union is maintained sufficiently precise.

Preferably, the placement is carried out by means of a form drag between the guide piece carrier and the corresponding requested module, which acts in the direction necessary for guidance, or by a form drag between the drive point carrier and the requested module corresponding, acting in the direction of the drive or in the

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drive direction.

A corresponding drag can be established, for example, by means of suitable supports in the requested module and in the guide piece carrier or in the drive point carrier.

On the other hand, the placement can be carried out, for example, by an application or by a firmer joint than a loose drag, whenever a game is sufficiently possible, which allows a corresponding discharge.

Preferably, the placement is produced by means of several supports or trawls of form, which act in a corresponding way leaving enough play from several sides and thus guarantee a sufficient or corresponding union to the respective requirements with a sufficient play.

In this sense, the term "placement" of the guide piece carrier or the drive point carrier here designates any provision of a guide piece carrier or drive point carrier in the corresponding requested module in such a manner. that by means of the guide piece carrier or by means of the drive point carrier, the necessary guidance in each case or the necessary drive in each case for the corresponding requested module can be guaranteed to a sufficient extent or with sufficient elasticity.

If necessary, the guide piece carrier and the drive point carrier can be configured in one piece or provided by the identical module. In this sense, an actuation plate placed separately in the corresponding requested module, which also carries at least one guide piece on the side of the module, can serve both as a guide piece holder and as a point drive carrier. Such a single-piece configuration implies a very compact structure and, with minimal effort, a very effective minimization of the influence of moments and forces, caused by extrusion, on the rest of the extrusion press.

While it is conceivable that the requested module is guided only with a single guiding device according to its guidance, however, this means that the only guiding device has to absorb all the moments and forces necessary for guiding on its own, what can lead in case of unfavorable geometric relationships to lever travels

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lengths that in turn require the guidance device considerably. Therefore, it may be advantageous if the guide comprises at least two guiding devices, spaced apart from each other, for example on opposite sides, on which requested modules are arranged, and preferably causing the same guiding path in themselves. This means that eventual moments or corresponding forces do not increase too much and a safer and more uniform guidance can be guaranteed. It is therefore advantageous then that each of the guiding devices in each case comprises a guide piece on the module side and that the guide piece on the module side is disposed in each case in a guide piece carrier in the corresponding module, which in turn is placed in each case separately in the corresponding module.

According to a specific embodiment, it is understood that a guide piece carrier can also provide several guide pieces on the module side, to configure the corresponding guidance device with the best possible guidance.

In particular, three, four or more guiding devices may also be placed in each case in the corresponding module, to guarantee a sufficiently good guidance, the guiding devices being preferably arranged symmetrically with one another, for example in rotation symmetry or in specular symmetry A corresponding symmetry with respect to the axis of the press is especially preferable, that is to say with respect to the direction of central movement of the extruded material through the extrusion press.

It is understood that according to specific requirements several motor drives may also be provided, which are provided in each case spaced apart from each other in the requested module, the symmetries mentioned above being conceivable here as well. According to specific requirements, however, as many motor drives as guiding devices are not required, to guarantee a corresponding operational safety. In other cases, however, several small drives may be provided in an absolutely controlled manner, in particular when more drive power is needed per se, for example in the case of large presses, so that a large drive can be dispensed with.

Also in the case of several motor drives it is therefore advantageous that each motor drive acts in each case at a drive point on the module side and that the drive point on the module side is arranged in each

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case in a carrier of drive point in the corresponding requested module, which is in turn placed in each case separately in the corresponding requested module.

Preferably, the guide piece carrier and / or the drive point carrier or at least one of the guide piece carriers and / or at least one of the drive point carriers are positioned through at least one element damper in the respective module. In this case, the damping element may dampen eventual impacts or blows, which could be caused by the extrusion process in the direction of the guide or in the direction of the motor drive, and minimize its repercussions.

As a damping element, springs are considered in particular, regardless of whether they are helical springs, leaf springs, disk springs or similar elastic modules, and friction elements may also be provided, if necessary, to convert mechanical energy, caused by shocks or impacts, in thermal energy. Hydraulic damping elements can also be used here advantageously, which can act by extracting energy through currents in the transition between the requested module and the drive point carrier or the guiding part carrier. Likewise, rubber elastic elements have proved to be very advantageous as damping elements, since they can act both by transmitting forces and extracting energy.

A separate placement of a guide piece carrier or a drive point carrier can be carried out in a particularly simple way, if between the guide piece carrier and / or the drive point carrier on one side and the corresponding module by On the other hand, a drag element is provided that acts in the direction of movement of the corresponding module. Although eventual impacts or blows are then transmitted additionally, acting in the direction of actuation of the drag element, however, all other directions of action of impacts or blows or other forces cannot be transmitted, or only very badly, through of a drag element of this type.

A corresponding drive element may in particular have a support on the side of the module or a stop on the side of the module and a stop on the side of the guide piece carrier or on the side of the drive site carrier, which can act correspondingly in drag.

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Preferably, the drive element acts in conjunction with the damping element, so that an especially effective decoupling can be guaranteed. For this purpose, for example, the drag element and the damping element can be connected in series, for which the damping element can then have, for example, a corresponding stop or a corresponding support. In an alternative configuration, the damping element and the drag element may be connected in parallel.

To minimize the influence of moments and forces, caused by extrusion, on the rest of the extrusion press, an extrusion press to extrude a billet by means of a matrix with a container and with a punch that can move with respect to the container and The matrix, being driven at least one module of the motor extrusion press through a motor drive, comprising a motor driven drive pin and a rack, in which the drive pin engages, can be characterized in that The drive pin is mounted on a drive point carrier in an adjustable manner through an eccentric with respect to the rack. The eccentric makes it possible to fit the drive pin, regardless of an eventual game or similar with respect to the rack, in a very exact way, so that there is no game that makes possible impacts or blows. In particular, the tooth flank set can then be optimally adjusted to each other.

As a corresponding module, the requested module can be driven correspondingly to the motor in particular, as already explained in detail above, being able to capture it preferably thanks to the separate placement of the drive point carrier in the requested module impacts on the transition between the Requested module and the drive point carrier, but the transition between the drive pin and the rack detracts with a game too large this separate placement.

Therefore, it is advantageous that the eccentricity of the eccentric has a component in a plane that intersects the rack, so that the drive pin can approach the rack or move away from it.

Preferably, the drive point carrier carries a motor, preferably an electric motor, of the motor drive. It is understood that as a motor, hydrodynamic or hydrostatic motors are also used, although preferably motors with a rotor.

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Likewise, linear motors can also be used, when it is advantageous.

In particular, in interaction with the drive pin, however, a motor with a rotor is advantageous, since in this way a very simple constructive realization can be achieved.

Between the motor drive and the drive point, that is for example the drive pin, a safety coupling can be provided, which serves as protection against overload. In this way, the motor drive can be discharged against possible impacts or blows or other forces, caused by extrusion. Preferably, a safety clutch of this type is configured, for example, as a sliding clutch. However, if necessary, it may also include rupture discs or rupture bars or the like. In particular, clutches or torsional vibration dampers are advantageously considered as a safety clutch, since in this way a corresponding decoupling can be guaranteed without destruction.

The safety clutch can be provided in particular between the motor drive and a transmission provided between the motor drive and the drive point, so that forces that are not too large are transmitted from the motor drive to the transmission and the drive clutch. security downloads the transmission in this respect and is protected.

It is understood that the characteristics of the solutions described above or in the claims may also be combined, in order to implement the advantages in a correspondingly accumulated manner.

Other advantages, objectives and properties of the present invention are explained by means of the following description of embodiments, which are also represented in particular in the attached drawing.

Brief description of the figures.

In the drawing they show:

1 shows a schematic side view of an extrusion press;

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figure 2 figure 3

Figure 4 Figure 5

a detailed view of a guide or motor drive of the extrusion press according to figure 1 in perspective representation; a schematic representation of the transition between the requested module and the guide piece carrier or the actuation point carrier of the arrangement according to Figure 2; Y

a schematic view of the drive points from below.

a perspective view of an extrusion press according to the present

invention

Description of a preferred realization.

The extrusion press 10 shown in the figures comprises a frame 28, which in turn has a cylindrical beam 64, a complementary beam 66 as well as anchoring elements 68 that act between means in a manner known per se. Each of the anchoring elements 68 comprises in an unnumbered manner more in detail, since they have been known for a long time by the state of the art, traction elements or compression parts, the anchoring elements being able to be configured if necessary. one piece.

In the cylindrical beam 64, in the case of the extrusion press 10 in a manner known per se, a main cylinder 60 is arranged, through which a punch 16 can move along an axis of the press 54 on a die 12, which is in turn fixed to the complementary beam 66, to apply the extrusion forces.

The extrusion press 10 also has a container 14, which surrounds a billet to be pressed during extrusion, so that the material can only exit through the die 12.

For extrusion, the punch 16 is set relatively long, so that, during extrusion, it can reach the container and can push the billet to the die 12 through the container 14.

The extrusion press 10 therefore functions as a direct extrusion press, being configured in the case of an indirect extrusion press, as an alternative embodiment, the correspondingly shorter punch 16 and the matrix 12 being arranged on a die. In the case of more complex extrusion presses, such as in

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In the case of extrusion presses that work continuously, in other forms of realization, both the punches and the dies can have a punch shape and essentially more complex movement developments are provided.

For loading and similar purposes, the container 14 can move axially with respect to the axis of the press 54 in a guide 20. For this, the container 14 is placed in a container carrier 72, which in turn has corresponding guiding devices 22, which are explained below in more detail.

Likewise, the punch 16 is fixed to a mobile stringer 70, in which guiding devices 22 are also placed, which also enable guidance along the guide 20. It is understood that in different embodiments they can also be other modules, requested by forces and moments of extrusion, that can move along the guide 20 or along another guide are provided.

In the present embodiment, four guiding devices 22 are provided in each case 22 in the mobile beam 70 or in the container carrier 72, so that any slope and the like can be reduced thereto and the construction circumstances in any case present through the anchoring elements 68 for guiding.

In the present embodiment, the mobile beam 70 is also connected with secondary cylinders 62, which also rest on the cylindrical beam 54 and can act both in the extrusion direction and against the extrusion direction. This ensures an axial movement of the mobile beam 70 along the guide 20.

As can be seen immediately, the matrix 12, the container 14 and the associated container carrier 72 as well as the punch 16 and the mobile beam 70 represent requested modules 18, which are requested during extrusion by forces and moments caused by extrusion. The latter has been relatively uncritical in the case of the matrix 12, since it remains stationary with respect to the frame, while the container 14 with the container carrier 72 and the punch 16 with the mobile stringer 70 travel along the guide 20, whereby corresponding loads also reach guide 20 and associated drives.

In the present exemplary embodiment, the motor drive 32 of the container 14 or of the container carrier 72 is produced through an electric motor 52, which is driven by a

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transmission 56 and a safety clutch 58 a drive pin 46, which serves as a drive point on the side of module 34.

The drive pin 46 engages in a rack 48, which serves as the drive point on the side of the frame 36 and, in turn, is stationary attached to the anchoring element 68.

The electric motor 52, the transmission 56 and the drive pin 46 are fixed through an eccentric 50 to a drive point carrier 38, which serves as the drive plate.

The drive plate or the drive point carrier 38 otherwise serves as a guide piece holder 30 and slide holder, which as guide pieces on the side of the module 24 form part of the respective guide device 22, which it comprises as guide pieces on the side of the frame 26 also guide rails, with which the slides interact.

In the present embodiment, this guide device 22 comprises in each case two guide pieces on the side of the module 24 and guide pieces on the side of the frame 26, which can act, arranged orthogonally with respect to each other, to along the guide 20, the guide pieces being arranged on the side of the frame 26 as two sliding rails in each case in the anchoring element 68.

The guide piece holder 30 or the drive point carrier 38 are placed separately in the container holder 72 and therefore also in the container 14, which in the present embodiment occurs through damping elements 40, configured as rubber elastic elements 42, and a drag element 44, which can interact with the damping elements 40, as well as through a support of the requested module 18 on the guide piece carrier 30 or the drive point carrier 38.

The drive element 44 comprises in this embodiment two supports on the side of the module 74, which are provided in each case by the damping elements 40, as well as two supports on the side of the guide piece or drive point carrier 76, which are provided by a drag boss 78, which in turn is arranged in the guide piece holder 30 or in the drive point carrier 38.

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It is understood that in different embodiments the drag boss 38 can be configured in a single piece in the guide piece holder 30 or in the drive point carrier 38, provided that corresponding supports are provided on the side of the piece carrier guiding or driving point 76. It is also conceivable that, in different embodiments, corresponding damping elements 40 may be provided there, which constitute a support on the side of the guiding part or driving point carrier 76. Likewise the supports can be provided on the side of the module 74 if necessary by the container carrier 72 or the container 14 or by the requested module 18.

It is understood that, if necessary, the drive element 44 can also act only on one side, provided that it transmits driving or guiding forces only in one direction.

As can be seen immediately, the damping elements 40 effectively soften forces that run in the axial direction, that is to say parallel to the axis of the press 54 and act on the drag shoulder 78. In any case, by means of the supports Too many loose forces are barely transmitted that appear perpendicular to them, since in this case there is only a friction joint. It is further understood that the damping element 40 or the corresponding elastic rubber elements 42 may also surround, if necessary, the drag boss 78, to enable more intense guidance.

If necessary, the application of the requested module 18 on the guide piece carrier 30 or the drive point carrier 38 can also occur through a damping element, such as a rubber mat or springs.

In the present case, the guide device 22 has been described with its guide piece carrier 30 as well as the drive point carrier 38 or the motor drive 32 only with respect to a guide point or drive point.

As explained above, the present embodiment shows at least four such guidance devices 22, which are symmetrically placed around the extrusion direction in the container holder 72 correspondingly separately. It is understood that in different embodiments, a greater or lesser number of guiding devices may also be provided, 22.

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Also, in the present embodiment, only the guide piece carriers 30 arranged below the axis of the press 54, that is the main extrusion direction through the extrusion press 10, are also designed as point carriers. of drive 38, since this is ultimately sufficient for a sufficient drive of the container 14 in this embodiment. It is understood that in different embodiments all guiding part carriers 30 may also be configured as actuation point carriers 38 and correspondingly provide motor drives 32. It is also conceivable that, in different embodiments, only one of the Guiding piece carriers 30 is configured asr

It is further understood that, in a different embodiment, a drive point carrier 38 may be provided that does not carry any guide piece on the side of module 24 and therefore is not a guide piece carrier 30 In that case it is only for a motor drive 32.

While in the present exemplary embodiment the mobile beam 70 is driven by the main cylinder 60 and the secondary cylinder 62, in different embodiments the mobile beam 70 may also be driven correspondingly to motor drives 32, which are guided along the guide 20 through actuation point carriers 38, where appropriate, they are at the same time carrying guide piece 30. In the present embodiment, four guiding devices 22 are provided on the mobile beam 70, which do not serve as a carrier of drive point 38 and also interact with the guide pieces on the side of the frame 26 of the guide device 22 of the container 14 or of the container holder 72.

Moreover, it is understood that for other guided modules, which are also subject to forces and moments caused by extrusion, corresponding guidance and motor drive devices may be provided.

It is further understood that, instead of the rubber elastic elements 42, damping elements 40 may also be provided, which comprise a spring, for example a helical spring or a leaf spring. Likewise, disk springs are conceivable. If necessary, complementary friction devices can also be provided to reinforce a damping effect.

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The eccentricity of the eccentric 50 has, in this exemplary embodiment, a component in a plane that intersects the zippers 48, as can be seen immediately from Figure 4, in which the drawing plane represents a corresponding plane. In this way, the drive pin 46 can be adjusted optically with respect to the flanks of the rack 48, this preferably occurring only during maintenance work, whereby wear can also be compensated. For a corresponding regulation, the eccentric is preferably interlocked or an interlock is opened, as has been known for some time in the corresponding eccentrics.

The safety clutch 58 is provided in this exemplary embodiment as a sliding clutch between the transmission 56 and the electric motor 52. Such a sliding clutch has the advantage that it operates in itself maintenance-free and, after a slip, its loss is not lost. functionality The transmission 56 of forces that are too large that the electric motor 52 could apply can also be discharged in this way.

Alternatively, a safety clutch could be provided between the transmission 56 and the drive pin 46 or the drive point on the side of the module 34, if the transmission 56 was to be protected against shocks and irrelevant forces were too large. electric motor 52 with respect to transmission 56.

If necessary, a sensor may indicate a corresponding slip, in order to optimize the process in this regard. It is understood that, instead of such a sliding clutch, a rupture bar or a rupture disc or a torsional vibration damper can also be advantageously used. If necessary, the latter can also occur in a complementary way.

Reference List:

 10

 extrusion press 46 drive pin

 12

 48 zipper matrix

 14

 eccentric container 50

 16

 electric motor punch 52

 18

 requested module 54 press axis

 twenty

 guide 56 transmission

 22

 guiding device 58 safety clutch

 24

 guiding piece on the side of the 60 main cylinder

 module 62 secondary cylinder

 26

 guide piece on the side of the 64 cylindrical stringer

 frame 66 complementary beam

 28

 frame 68 anchor elements

 30

 bearer of guide piece 70 mobile stringer

 32

 motor drive 72 container carrier

 3. 4

 actuation point on side 74 support on module side

 of module 76 support on the carrier side of

 36

 drive point on the guide piece or point side

 of the drive frame

 38

 78-point drag carrier

 drive

 40

 damping element

 42

 rubber elastic element

 44

 drag element

Claims (11)

5 10 fifteen twenty 25 30 35 1. Extrusion press (10) to extrude a billet by means of a die (12) with a container (14) and with a punch (16) that can move with respect to the container (14) and the die (12), being guided at least one module (18) of the extrusion press (10), requested during extrusion by forces and moments caused by extrusion, displaceably along a guide (20), comprising at least one guiding device (22), the guiding device (22) comprising a guiding piece on the side of the module (24) and the guiding part being arranged on the side of the module (24) in a guiding piece holder (30) in the corresponding module (18), characterized in that the guide piece carrier (30) is placed separately in the corresponding module (18). 2. Extrusion press (10) according to claim 1, characterized in that at least one module (18) of the extrusion press (10) is requested during extrusion by forces and moments caused by extrusion, by a motor through a motor drive (32), the motor drive (32) acting at a drive point on the side of the module (34) and the drive point being arranged on the side of the module (34) in each case in a drive point carrier (38) in the corresponding module (18), and in which the drive point carrier (38) is placed separately in the corresponding module (18). 3. Extrusion press (10) according to claims 1 and 2, characterized in that the guide piece carrier (30) and the drive point carrier (38) are configured in one piece. 4. Extrusion press (10) according to one of claims 1 to 3, characterized in that the guide piece carrier (30) and / or the drive point carrier (38) are placed through at least one element damper (40) in the respective module (18). 5. Extrusion press (10) according to claim 4, characterized in that the damping element (40) comprises a spring and / or an elastic rubber element (42). 6. Extrusion press (10) according to one of claims 1 to 5, characterized in that between the guide piece carrier (30) and / or the drive point carrier (38) on one side and the module (18 ) corresponding on the other hand an element of 5 10 fifteen twenty 25 drag (44) acting in the direction of movement of the corresponding module (18). 7. Extrusion press (10) according to claim 6 and according to claim 4 or 5, characterized in that the drag element (44) acts together with the damping element (40). 8. Extrusion press (10) according to any of the preceding claims, characterized in that at least one module (18) of the extrusion press (10) is motor driven through a motor drive (32), comprising a motor-driven drive pin (46) and a rack (48), in which the drive pin (46) engages, in which the drive pin (46) is mounted on a drive point carrier (38 ) adjustable through an eccentric (50) with respect to the zipper (48). 9. Extrusion press (10) according to claim 8, characterized in that the eccentricity of the eccentric (50) has a component in a plane that intersects the rack (48). 10. Extrusion press (10) according to one of claims 2 to 9, characterized in that the drive point carrier (38) carries a motor, preferably an electric motor (52), of the motor drive (32). 11. Extrusion press (10) according to one of claims 2 to 10, characterized in that between the motor drive (32) and the drive point (34), preferably between the motor drive (32) and a transmission ( 56) provided between the motor drive (32) and the drive point (34), a safety clutch (58) is provided.