EP2762246B1 - Straightening machine for wire - Google Patents

Description

The invention relates to a straightening machine for wire, with a rotatable straightening body, sit in the straightening jaws, at least some of which are radially adjustable by means of axially movable wedge surfaces which are in operative engagement with associated control surfaces on the radial outer sides of the straightening jaws or intermediate shim body.

In wire processing machines a usually unwound from a coil wire is fed to the machine. However, this requires prior straightening of the wire. This is generally achieved by a straightening machine preceding the inlet of the wire processing machine, through which the supplied wire is passed for alignment.

Among the various types of known straightening machines are in particular those with rotating straightener to mention in which at least some radially adjustable straightening jaws are arranged within the blade at axial distances from each other. The directivity exerted on the continuous wire directivity is achieved by a radial offset of the individual straightening jaws from the central center position in connection with the rotational movement of the straightening blade and the axial distance of the straightening jaws, the respective settings in each case specially adapted to the individual wire to be treated are.

In order to make the appropriate adjustments of the straightening jaws for adaptation to different wires, usually relatively complex mechanical devices are provided by wedge surfaces or cam, which must be actuated from the outside accordingly. This applies all the more, even if an adjustment of the straightening jaws should be possible with rotating straightening, as an adjustment leads only at standstill to unwanted downtime of these complicated and thus provided with high cost devices.

In the from the DE 25 23 831 C3 known straightening device sits on the outside of the rotatable directional wing an axially adjustable on this sliding sleeve with obliquely attached to the direction of wedge surfaces which bear against complementary oblique outer surfaces of a housing which projects into the directional wing and carries in its interior a straightening jaws, the axial displacement of the Sliding sleeve is adjusted via the housing radially inside the straightening wing. About a pivot bearing an adjusting lever is connected to the sliding sleeve, by means of which the sliding sleeve can be moved axially on the directional wing. In this known arrangement, only a single sliding sleeve for radial adjustment of a straightening jaw is used, the assembly and disassembly of the known device are very expensive.

In the generic EP 0 620 058 B1 a straightening device is used with a housing consisting of two half-shells. The directional wing is rotatably seated within this housing and the radially adjustable directional jaws are radially positioned via corresponding wedge surfaces of axially adjustable wedge elements within the housing. However, since the wedge elements are fastened to the housing via screw connections, an adjustment of the wedge elements in the housing can only take place at a standstill. Although the housing of this known device can be relatively easily screwed apart so that z. B. a change of straightening jaws is possible. An adjustment of the straightening jaws but, as already mentioned, be made only at a standstill, the axially adjustable wedge elements are in turn screwed to their axial offset in adaptation to a new wire in turn on the housing. Thus, an adjustability of this known straightening device during operation is not possible and also adapting to different wires is relatively time consuming.

In the wire straightening device from the DE 691 00 108 T2 (or the EP 0 473 739 B1 ) is used for the radial adjustment of a straightening jaw in the directional wing, a cylinder-actuated sliding sleeve which presses against a bushing with a wedge, with the interposition of a rotatable roller, which is in operative engagement with the wedge surface of the wedge, the radially outwardly biased by a spring straightening jaws adjusted in its radial position. In addition, in this known device and the directional wing in turn displaceable in the wire longitudinal direction, wherein the two displacement movements of sliding sleeve and straightening jaws are coupled together via a controller. This known device is very complicated in their overall structure and only consuming mountable or disassembled and also not suitable for the use of multiple radially adjustable straightening jaws within a directional wing.

Straightening machines of the type mentioned are in the US 2 720 907 A , of the DE 1 981 813 U1 as well as in the ES 2 346 608 B1 described.

In the straightening from the US 2 720 907 A In this case, a plurality of axially adjustable straightening modules are used, between each of which radially adjustable straightening jaws are provided. The whole is mounted within a housing, which consists over its length of two standing in rotatable meshing with each other housing sections. In a relative rotation of the two housing sections to each other, the total length of the housing is shortened or extended and the axial displacement movements thereby the distances between the individual directional modules are changed, thereby over at each side mounted wedge surfaces by running onto corresponding inclined surfaces of the straightening jaws latter radially in their Able to be relocated. In this known device is a closed system, which is relatively susceptible to dirt, in which a significant heat development occurs during operation and in which change the adjustment of the radial positions of the straightening jaws and their axial distances from each other, which is not in any case the adaptation to a new wire is desirable.

In the straightening device from the DE 1 981 813 U1 a two-part directional wing is used, comprising an axially stationary, but rotatably mounted part with wedges and an axially movable part with straightening jaws, which are in operative connection with the wedges comprises. The radial delivery of the straightening jaws takes place by axial displacement of the movable part of the rotary vane, wherein the contact between the inclined surface of a straightening jaw and the associated oblique wedge surface, which takes place only radially on one side of the straightening jaw, is to be ensured by the centrifugal forces occurring during the rotation of the straightening blade. The use of a two-part directional wing is disadvantageous in terms of storage and load due to unfavorable dynamics, with this straightening device and an exchange of straightening jaws is very expensive.

The ES 2 346 608 B1 describes a straightening device in which the wedge surfaces are attached to wedge strips, which are inserted into the straightening wing. The individual straightening jaws are each radially biased on one side of the local wedge strip, but not on a wedge surface thereof, by means of a spring on the opposite radial side, where they abut against the other wedge strip against a corresponding wedge surface and their axial displacement be delivered radially. However, the assembly of the arrangement and the replacement of the straightening jaws is somewhat complicated.

Proceeding from this, the invention aims to provide a straightening machine of the type mentioned above, which allows a cost-effective, robust and uncomplicated way for the adjustment of the straightening jaws during operation as well as a quick and easy replacement of straightening jaws.

This is achieved in a straightening machine of the type mentioned above in that the straightening body in a surrounding him, relative to it axially displaceable sleeve sits, which has a lower part and a lid that closes, wherein the axially displaceable wedge surfaces on the lower part and on the lid Cuff are formed and via associated openings in which they can be axially displaced, protrude into the straightening body and there are in operative engagement with the control surfaces of the straightening jaws or their shims.

The invention is based on a new constructive concept of such straightening devices, in which the straightening body is surrounded by a sleeve (with lower part and lid which can be fastened thereto) which is axially displaceable relative to the straightening body. In this case, the wedge surfaces are mounted on the lid and the lower part of the sleeve in such a way that they protrude in the assembled state of the straightening machine through corresponding openings in the straightening body of the radially outer sleeve in the interior of the straightening body, where only in the straightening body for the delivery the directional jaws required active engagement between the straightening surfaces and the control surfaces of the straightening jaws (or their shims) takes place.

The construction of the displaceable sleeve with a lower part and a lid, with which the lower part can be closed, initially allows a rapid opening of the lid and a quick access to the seated therein body. When removing the lid from the lower part are at the same time already led out the wedge surfaces, which are fixed to the lid, from the straightening body, after which the straightening jaws and possible shims (which are used when the radial distance between the straightening jaws and wedge surface is very large, or to Can use directional jaws regardless of the slope of the wedge surfaces) from the recordings of the straightening body in which they sit, easily fall out or can be removed by z. B. the directional body is rotated by 180 °. Conversely, for mounting the lower part of the cuff together with attached wedge surfaces placed on the head body from below and thereby placed the lower part arranged wedge surfaces in the interior of the straightening body, after which the straightening jaws and shims are inserted into the receptacles provided in the straightening body. Finally, the lid is attached to the attached to this wedge surfaces on the lower part of the top and screwed with this.

In this case, the entire arrangement can be designed so that only one or only individual straightening jaws are radially adjustable, while one or more straightening jaws are provided unadjustable and fixed.

The overall structure of the straightening machine according to the invention is thus quickly assembled and disassembled, simple in its constructive concept and also relatively inexpensive to produce. The straightening machine according to the invention can also be set without problems during the turning operation, that is to say during operation of the associated wire forming machine. H. the radial infeed of the straightening jaws, be made.

In a preferred embodiment of the invention, the wedge surfaces, which are attached to the lower part and the lid, formed on two wedge rails, one of which is attached to the lower part and the other on the lid. As a result, a particularly rapid assembly of such wedge surfaces and in particular a rapid removal of the same, for example, for replacing one or more straightening jaws, possible, wherein the production of such wedge rails can also be done easily.

The control surfaces used for the radial delivery of the directional jaws on the radial outer sides of the straightening jaws or the radial outer side of the shims and these radially downstream shims may be formed in any suitable form. However, they are very particularly preferably designed as inclined surfaces which are complementary to the wedge surfaces and are in operative engagement with these inclined surfaces. This results in a simple and effective control of the delivery movements of the straightening jaws with a comparatively low mechanical complexity.

Advantageously, the wedge surfaces (and the associated control surfaces of the straightening jaws) are formed in axially juxtaposed straightening jaws as counteracting inclined surfaces (wedge slopes). This prevents axial migration of the sleeve when pulling the wire, without a larger counter-holding force is needed.

A preferred embodiment of the straightening machine according to the invention is also achieved in that the straightening body has at one axial end portion there projecting shaft shoulder on which sits on him axially adjustable or displaceable control to which the associated axial end of the sleeve is suitably connected. This can be in a favorable manner both caused by an operator mechanical adjustment of the relative movement between the sleeve and the directional body for radial delivery of the straightening jaws, but also achieve an automatic axial adjustability between sleeve and straightening body.

With regard to a mechanical axial adjustment of the sleeve relative to the directional body, advantageously, the control has a displaceably mounted on the shaft shoulder actuating ring, which is connected for axial displacement of the sleeve to an operator from the outside axially pivotable actuating lever, the cuff two each other has radially opposite, axially from her to the actuating ring projecting claws, which in turn engage in a formed in a radial recess of the actuating ring annular groove in which they slide. As a result, an axial adjustment movement of the non-rotating actuating ring can be transmitted via the jaws to the sleeve rotating with the guide body.

In order to obtain a motorized actuator for displacing the sleeve, the control is preferably in the form of a pulley, which is screwed onto an external thread attached to the shaft shoulder, but rotatably seated thereon, wherein at the associated axial end of the sleeve two radially opposite claws are fastened, which in an annular groove, positively guided in this slidably engage, which is formed in a radial recess on the side facing the sleeve of the pulley.

If the belt pulley is driven at the same speed as the straightening body during operation, the position of the sleeve on the straightening body remains unchanged. However, if the sleeve is to be moved axially relative to the straightening body, the rotational speed of the pulley is selected to be larger or smaller than that of the straightening body, whereby the pulley moves axially on the thread of the shaft shoulder and is axially displaced accordingly. This offset movement is transmitted to the cuff via the claws.

There is also the possibility, however, that (for both manual and motor axial adjustment of the collar), instead of the two claws mentioned, more than two claws or also another suitable connection between the collar and the shaft shoulder axially adjustable control can be used.

Fig. 1

eine erste Ausführungsform einer erfindungsgemäßen Richtmaschine in perspektivischer Darstellung;

Fig. 2

die Richtmaschine aus Fig. 1 in einem perspektivisch dargestellten Längsschnitt;

Fig. 3

eine zweite Ausführungsform einer erfindungsgemäßen Richtmaschine in perspektivischer Darstellung,

Fig. 4

die Richtmaschine aus Fig. 3 im Längsschnitt in perspektivischer Darstellung, und

Fig. 5

die Richtmaschine aus den Fig. 3 und 4 im demontierten Zustand, in Explosionsdarstellung.

The invention will be explained in more detail below with reference to the drawings in principle, for example. Show it:

Fig. 1

a first embodiment of a straightening machine according to the invention in a perspective view;

Fig. 2

the leveler off Fig. 1 in a perspective view shown longitudinal section;

Fig. 3

a second embodiment of a straightening machine according to the invention in a perspective view,

Fig. 4

the leveler off Fig. 3 in longitudinal section in perspective, and

Fig. 5

the leveler from the 3 and 4 in disassembled state, in exploded view.

In the Fig. 1 and 2 is, in each case in perspective and in Fig. 2 also in longitudinal section, a straightening machine 1 shown, comprising a rotatable directional wing 2, which has a straightening body 3 and a surrounding cuff 4.

The cuff 4 comprises a lower part 5 and a cover 6 which can be fastened on this, like the latter Fig. 1 and in particular the presentation of the Fig. 5 the latter reproduces a leveling machine (in an exploded view) in a disassembled state, which is an embodiment different from that of FIGS Fig. 1 and 2 but identical with respect to the structure of the cuff 4.

As always very good Fig. 5 recognizable, the lower part 5 is provided with a series of upwardly projecting vertical webs 13, both sides of its longitudinal extent, wherein in the assembled state, the lid 6 is screwed by screws 12 into corresponding screw holes at the upper end of the vertical webs 13 (see. Fig. 1 and 2 ).

The directional wing 2 comprises at its (in the figures shown on the right) end portion of a shaft shoulder 8, on which a pulley 7 is mounted to drive the directional wing 2, about one (only in the example of 3 and 4 shown) belt, which is driven by a motor (not shown) from the outside.

At the opposite axial end of the directional wing 2 has a further axial shaft shoulder 9, which provided as well as the shaft shoulder 8 with respect to the remaining straightening 2 reduced diameter and on the in the embodiment of the Fig. 1 and 2 an actuating ring 10 is mounted.

The actuating ring 10 can be moved axially along the shaft shoulder 9, via an actuating lever 11 to which the actuating ring 10 is attached at two opposite radial locations. The actuating lever 11 can be manually or motorized, z. B. via a driven spindle (not shown in the figures), are operated.

On its cuff 4 facing end face, the actuating ring 10 has a radial recess 33, d. H. a recess with an opposite the shaft shoulder 9 enlarged diameter, which extends over a certain axial length in the mounting ring 10 inside.

In the area of this radial recess 33, a circumferential annular groove 15 is provided in the actuating ring 10.

Two jaws 14, which are secured to the sleeve 4 via screws 16 and extend axially into the radial recess 33, engage with at their free ends radially outwardly directed projections each in the annular groove 15, said radial extensions displaceable in the Ring groove 15 sit. In this way, an axial coupling between the operating ring 10 which is fixed during operation and which is rotatably seated on the shaft shoulder 9 and the collar 4 rotating with the latter can be produced. If now the actuating ring 10 is moved axially on the shaft shoulder 9 via the actuating lever 11, a corresponding axial displacement of the sleeve 4 relative to the straightening body 3 takes place via the claws 14.

Like the sectional view of the Fig. 2 shows, in the directional body 3 straightening jaws 23 and 23 'are arranged, which can be made in one or two parts and partially not radially adjustable (such as those in Fig. 2 , Seen from the left, axially first and last straightening jaw 23), as well as, between them and at an axial distance from each other, straightening jaws 23 ', which are axially fixed within the straightening body 3 in position, but radially deliverable.

Some of these radially adjustable straightening jaws 23 'are provided on their radial outer side with a control surface 21' running obliquely to the longitudinal center line M of the straightening machine 1 (as in the illustration of FIGS Fig. 2 the, seen axially from the left, upper straightening jaw 23 'at the third straightening jaw point).

In other places, the radially adjustable straightening jaws 23 'bear radially on shims 24, which in turn have inclined control surfaces 21 on their radial outer sides (as shown in FIG Fig. 2 in the axial direction, seen from the left, at the second and fourth straightening jaw position, as well as at the third straightening jaw position, below). This arrangement is selected when the radial distance of a straightening jaw 23 'from the associated wedge surface 22 is large or when the straightening jaws 23' are to be used independently of the slope of the wedge surfaces 22.

These oblique control surfaces 21, 21 ', radially either directly on the outside of a straightening jaw 23' or on the radial outer side of a shim body 24, bear against corresponding, oppositely inclined wedge surfaces 22, which are formed on either a wedge rail 19 or a wedge rail 20.

Each of these wedge rails 19, 20 is how Fig. 2 shows, provided with a plurality of axially successively arranged wedge surfaces 22, wherein the wedge rail 19 (in Fig. 2 : above) on the cover 6 and the wedge rail 20 (in Fig. 2 : Below) are attached to the lower part 5 of the sleeve 4 via screws 31 and 32, respectively.

In this case, axially adjacent wedge surfaces 22 of the wedge rails 19, 20 (and correspondingly also the control surfaces 21, 21 'of the radially adjustable straightening jaws 23' and their associated shim 24) provided with oppositely inclined wedge slopes, as the Fig. 2 . 4 and 5 is removable.

At each axial position of a straightening jaw 23 or 23 ', the assembly consisting of this and, if present, a radially associated shim 24 is mounted and guided within the straightening body 3 so that, although it can be radially delivered, it is axially immutable.

Like also Fig. 2 (or the similar sectional view in Fig. 4 , in a somewhat different embodiment, but with respect to the arrangement of the straightening jaws 23, 23 'within the straightening body 3 equal), the wedge surfaces 22 are attached to both wedge rails 19, 20 within the straightening body 3 so that each position of a straightening jaw 23, 23rd 'is assigned a pair of wedge surfaces 22, one of which is formed on the wedge rail 19 and the other, radially opposite, on the wedge rail 20. In this case, the two wedge surfaces 22 of each wedge surface pair are parallel to each other, so that upon an axial displacement of the sleeve 4 with respect to the straightening body 3, the wedge surfaces 22 of each pair of wedge surfaces so on the associated straightening jaw 23 'act, that these of the two at their radially outwardly adjacent wedge surfaces 22nd positively guided radially outwards or inwards. This is a forced operation, in the use of which an axially resilient bias of the straightening jaws 23 'is omitted radially in the outward direction.

That in the 3 and 4 illustrated embodiment of a leveler 1 differs from that of the Fig. 1 and 2 essentially characterized in that instead of the actuating ring 10 and the actuating lever 11 now a motor driven by a drive belt pulley 18 is provided, which is screwed onto a threaded shaft attached to the shaft 9 9th Again, the pulley 18 is on his Cuff 4 facing end face provided with a radial recess 33, which is a recess having a larger diameter than the diameter of the shaft shoulder 9, which extends axially in the direction of the sleeve 4 away in the pulley 18 by a certain length.

Within this radial recess 33, in turn, a circumferential annular groove 15 is mounted, in the two claws 14 of the directional wing 2 with radially outwardly directed projections slidably engage, inasmuch as here the basic coupling between the straightening 2 and the pulley 18 equal between the straightening the second and the actuating ring 10 in the embodiment of Fig. 1 and 2 is.

The axial length of the external thread 17 on the shaft shoulder 9 is designed so that the seated on the thread 17 pulley 18 along this thread 17 can be axially offset by the maximum displacement length between the sleeve 4 and the straightening body 3.

In operation, the straightening 2 by the in the 3 and 4 Pulley 7 shown on the right driven via the shaft shoulder 8 in the direction of rotation. At the same time, the pulley 18 has its own (in the 3 and 4 not shown) motor also driven in the same direction.

As long as the drive speed of the straightening blade 2 via the pulley 7 coincides with the speed of the pulley 18, the axial position of the pulley 18 on the thread 17, relative to the shaft shoulder 19 seen unchanged.

If now an adjustment of the straightening jaws 23 'are made during operation, only, according to the desired axial adjustment of the wedge rails 19 and 20, the drive rotational speed of the pulley 18 must be increased (or decreased) so that a speed difference between the speed of the straightening 2 and the pulley 18 occurs and thus the latter, which is screwed onto the thread 17, is moved on the shaft shoulder 9 and relative thereto in one or the other axial direction.

This axial relative movement between the pulley 18 and the shaft shoulder 9 is transmitted via the jaws 14 on the sleeve 4, so that it is displaced axially relative to the straightening body 3 accordingly. Is the desired axial displacement length reached, the drive of the pulley 18 is again changed so that its speed corresponds to the speed of the pulley 7 on the drive side of the directional wing 2, whereby the axial relative movement comes to a standstill.

By the interaction of the wedge surfaces 22 with the abutting against these, complementarily inclined oblique control surfaces 21, within the straightening body 3, the desired radial adjustment of the radial position of the corresponding adjustable straightening jaws 23 'causes.

In Fig. 5 Finally, the embodiment of a straightening machine according to the 3 and 4 in the disassembled state, quasi in the manner of an exploded view, shown, but here the bearing blocks 30, the pulley 7 of the drive for the directional wing 2 and also the drive belt for the pulley 18 are omitted in the drawing.

Like the representation of the Fig. 5 can be seen, an opening 25 is mounted in the directional body 3 at the top thereof, which extends in the longitudinal direction of the straightening body 3 in the central region over a relatively large axial length. A similar longitudinal opening is also mounted on the opposite underside of the straightening body 3, in Fig. 5 but not shown.

Through these openings 25 project the two attached to the lid 6 and the lower part 5 wedge rails 19 and 20 with their wedge surfaces 22 into the interior of the straightening body 3 inside, when the cover 6 on the top of the straightening body 3 and the lower part 5 at the bottom of the straightening body 3 are attached.

Is in the mounted state, the lid 6 attached to the lower part 5 of the sleeve 4 via the screws 12, then the comprehensive by the directional body 3 sleeve 4 can be moved axially relative to the straightening body 3.

The axial length of the openings 25 on the top and bottom of the straightening body 3 is designed so that the maximum axial displacement movement between sleeve 4 and straightening body 3 is possible without hindrance.

The openings 25 are executed with respect to their axial length a little longer than would be necessary for the execution of the pure axial displacement movement between the sleeve 4 and the control body 3. This is because the wedge rails 19 and 20, like the Fig. 5 shows, at its end facing away from the belt pulley 18 front end portions 26 which project in the assembled state at this end slightly slightly beyond the lower part 5 and the lid 6 and are guided within the axially projecting there end portion 27 of the respective opening 25 slidably.

• Zum Zusammenbau wird zunächst am Richtkörper 3 von dessen Unterseite her das Unterteil 5 der Manschette 4 mit der an diesem bereits befestigten Keilschiene 20 aufgeschoben, bis der untere Abschluß des Unterteils 5 gegen die Unterseite des Richtkörpers 3 anliegt. In diesem Zustand ragen die Steuerflächen 22 der Keilschiene 20 in das Innere des Richtkörpers 3 hinein.

For the description of the assembly is again on the representation of the Fig. 5 directed by:

• For assembly, the lower part 5 of the sleeve 4 is first pushed with the already attached thereto wedge rail 20 on the straightening body 3 from the underside thereof until the lower end of the lower part 5 abuts against the underside of the straightening body 3. In this state, the control surfaces 22 of the wedge rail 20 protrude into the interior of the straightening body 3.

The vertical webs 13, seen in the longitudinal direction of the lower part 5, are mounted on the two longitudinal sides at an axial distance from each other, run when pushing the lower part 5 on the straightening body 3 on both outer sides of the latter, so that they finally in the manner on the straightening body 3, as in the Fig. 1 and 3 is shown. Subsequently, at the top of the vertical webs 13, and that on each of the two sides of the straightening body 3, a retaining strip 28 is screwed, each projecting from the vertical webs 13 from something in the direction of the center of the directional body 3, while in a mounted on top of this elongated recess 29 protrudes, so that thereby form-fitting the lower part 5 is held on the straightening body 3. This prevents that even after removing the lid 6, the lower part 5 and the straightening jaws 23 can slide down uncontrolled from the straightening body 3.

Then, from the top of the straightening body 3 forth, through the opening 25 at the intended axial positions the straightening jaws 23 and 23 'in the straightening body 3 together with, if provided, the corresponding shims 24 inserted and thereby the straightening jaws 23, the radial be fixed, secured in a suitable manner within the straightening body 3.

Finally, from the top of the lid 6 is mounted with the attached second wedge rail 19 on the straightening body 3, wherein the wedge surfaces 22 are inserted through the opening 25 in the interior of the straightening body 3.

If the lid 6 is mounted with the wedge rail 19 attached to it on the upper side of the straightening body 3, the wedge surfaces 22 on the wedge rail 19 with the oblique control surfaces 21, 21 'on the radial outer sides of the straightening jaws 23' and shims 24 in Appendix and in operative connection with it.

During assembly, it must be ensured that when placing the lower part 5 and the cover 6, the wedge rails 20, 19 are in exactly axial positions aligned therewith, ie, the wedge surfaces 22 extend parallel to each other on both wedge rails 20 at each directional jaw location.

To the representation of the straightening jaws 23 'and possibly radially to this still attached insert body 24, as in Fig. 5 are shown, it should be pointed out that there is not an attachment to the associated wedge rail 19 and 20, but by the representation of Fig. 5 only the association between the wedge surfaces 22 and the inclined surfaces 21, 21 ', as they are present in the interior of the straightening body 3 in the mounted state. In this case, the wedge surfaces 22 of the wedge rails 19, 20 slide on the inclined control surfaces 21, 21 'in the axial relative displacement of the sleeve 4 relative to the control body 3, as stated above.

If now in the assembled state of the leveler 1, as he z. Tie Fig. 1 to 4 is shown, for. B. an exchange of straightening jaws 23 'and / or the wedge rails 19, 20 (with differently attached wedge surfaces 22) are made, needs in the in Fig. 1 or 3 shown machine state only the lid 6 solved by removing the screws 12 from the lower part 5 of the sleeve 4 and lifted from the straightening body 3, which then already an unhindered access to the straightening jaws 23 'and the shims 24 through the upper opening 25 is possible. Also, the wedge rail 19 is easily accessible at the bottom of the lid 6. By rotating the directional wing 3 by 180 ° after removal of the lid 6 can be achieved that the straightening jaws 23, 23 'and the shims 24 fall out or can be pushed out, after which the retaining strips 28 are opened and the lower part 5 can be removed.

For replacement of the wedge rail 20, the retaining strips 28 must be detached from the vertical webs 13 on the lower part 5 of the sleeve 4, after which the lower part 5 can be removed from the directional body 3. Beforehand, even the claws 14 by loosening the screws 16 (see. Fig. 1 ) separated from the control body 3.

Basically, the wedge rails 19, 20 and the straightening jaws 23, 23 'best carried out so that all straightening jaws 23, 23' can be brought together in a radial neutral position in which there is no radial deflection in all straightening jaws 23, 23 'and the is particularly well suited as a "threading position" for the wire. In this way, z. B. after a wire coil change the new wire can be easily threaded.

• So kann die Bedienungsperson etwa feststellen, daß die Richtqualität der Richtmaschine 1 sinkt, d. h. daß der Draht nicht mehr gerade genug ist, und entschließt sich dann, manuell über den Betätigungshebel 11 einzugreifen.

An adjustment of the directional wing 2 in operation can now be done in different ways:

• Thus, the operator can notice, for example, that the straightening quality of the straightening machine 1 drops, ie that the wire is no longer straight enough, and then decides to intervene manually via the actuating lever 11.

However, the leveler 1 can be used equally together with an automated straightening process, such as such. B. in the DE 10 2011 004 167 A1 is described, wherein a suitable measuring or monitoring device or even a plurality of such devices may be provided which measure the straightness of the directional wire due to predetermined parameters and adjust the straightening pad 2 continuously based on the obtained measurement results.

Finally, it is also conceivable that working with corresponding empirical values on the wear of the straightening jaws 23, 23 'as a basis for a continuous adjustment of the straightening process.

In addition, a startup or shutdown operation is possible in which the radial deflection of the straightening jaws 23 'is increased or decreased with increasing or decreasing speed of the straightening blade 2 (corresponding to an increasing or decreasing retraction speed of the wire).

In the case of the wedge rails 19, 20, there is basically the possibility of integrally forming and producing each of them integrally in a suitable manner.

In addition, however, it is also possible to form the parts of the wedge rails 19, 20 which carry the oblique wedge surfaces 22, as otherwise separate parts of the wedge rail, which are releasably secured to the respective wedge rail in a suitable manner. If a change in the inclination or orientation of the wedge surfaces 22 on the wedge rails 19, 20 is required or desired in adaptation to a specific wire, the entire wedge rail 19, 20 need not be removed from the cover 6 or lower part 5 in this case: Rather, it is sufficient if only the sections of the wedge rail 19, 20, which carry the wedge surfaces 22, removed from the rest of the wedge rail and instead there new sections with the desired other slopes of the wedge surfaces 22 are attached.

Claims (7)

1. Straightening machine (1) for wire with a rotatable straightening body (3) in which straightening cheeks (23, 23') are seated, of which at least several (23') can be radially shifted by means of axially slidable wedge surfaces (22) which being functionally engaged with corresponding control surfaces (21, 21') are positioned at the radial outer faces of the straightening cheeks (23') or interposed shims (24)
   characterised in that
   the straightening body (3) is surrounded by a sleeve (4) enclosing said body and axially slidable relative to it, comprising a lower part (5) and a cover (6) closing said part, the wedge surfaces (22) being constructed on the lower part (5) and on the cover (6), protruding into the straightening body (3) via corresponding openings (25) axially shiftable in said openings, and positioned there in functional engagement with the control surfaces (21, 21') of the straightening cheeks (23') or their shims (24).
2. Straightening machine according to claim 1 characterised in that the wedge surfaces (22) are constructed on two wedge rails (19, 20) of which one is attached to the lower part (5) and of which the other is attached to the cover (6).
3. Straightening machine according to claim 1 or 2 characterised in that the control surfaces (21, 21') at the radial outer faces of the straightening cheeks (23') or interposed shims (24) are constructed as sloping surfaces complementarily tilted towards the wedge surfaces (22) and functionally engaged with them.
4. Straightening machine according to any of claims 1 to 3, characterised in that the straightening body (3) has a projecting shaft shoulder (9) at an axial end section, on which said shaft shoulder an axially displaceable control element (10, 18) is mounted to which the corresponding axial end of the sleeve (4) is connected.
5. Straightening machine according to claim 4 characterised in that the control element comprises an actuating ring (10) slidably mounted on the shaft shoulder (9), said ring being connected to an actuating lever (11) horizontally tiltable in an axial direction for axial shift, the sleeve (4) having two projecting claws (14) located radially opposite each other axially to the actuating ring (10), said claws engaging in an annular groove (15) formed in a radial recess (33) of the actuating ring (10), being slidably guided in said groove.
6. Straightening machine according to claim 4 characterised in that the control element is constructed in the shape of a belt pulley (18), which is screwed onto a thread (17) affixed to the shaft shoulder (9), being rotatable on said thread, two claws (14) being located radially opposite each other being attached to the corresponding axial end of the sleeve (4), said claws engaging slidably in an annular groove (15) which is constructed in a radial recess (33) on the side of the belt pulley facing towards the sleeve (4).
7. Straightening machine according to any of claims 1 to 6 characterised in that in the straightening body (3) straightening cheeks (23') lying axially next to each other have inversely arranged control surfaces (21,21').

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