EP3246130B1 - Compression device - Google Patents

Description

TECHNICAL AREA

The present invention relates to a pressing device according to the subject matter of claim 1.

STATE OF THE ART

Pressing devices are known from the prior art. For example, the EP 2 340 899 such a pressing device.

In the pressing device after the EP 2 340 899 Two levers act on press jaws. The levers are articulated to a pressing jaw carrier and communicate with it via a bolt in each case. The pressing jaw is designed to be pivotable about the bolt relative to the pressing jaw carrier. The bolt after the EP 2 340 899 is held by a screw and two lids in the press jaw carrier.

Also, press devices have become known in which the bolt is held by releasable retaining rings in the die backing.

From the EP 1 786 598 is a press device has become known, wherein a predetermined breaking point is present, which breaks at the occurrence of excessive force at a defined location. Per bolt opening a predetermined breaking point is arranged, which leads to the problem that break one or both of the predetermined breaking points in case of failure, the pressing lever together with the bearing pin of the pressing device with great energy from the pressing device solve

The DE 10 2004 016110 shows a pressing device according to the preamble of claim 1.

PRESENTATION OF THE INVENTION

Based on this prior art, the invention has for its object, a Specify pressing device, which overcomes the disadvantages of the prior art. In particular, the pressing device should be safer to use.

Accordingly, a pressing device comprises at least one carrier element with at least two carrier tabs, in which at least one carrier opening is arranged, and at least one pressing element with at least one bearing opening for applying a pressing force to a compact, wherein the at least one Pressing element is mounted pivotably about at least one pivot axis on the support element. In each case one of the bearing and the pivot axis bereitstellender bolt extends through the at least one support opening and the bearing opening therethrough. At least one of the carrier straps is formed with a larger proportion of material than the other of the carrier straps.

In other words, the proportion of material of the carrier element in the region of one carrier lug is greater than the material content of the carrier element region of the other carrier lug. The material shares between the carrier tabs are so different.

The carrier straps are asymmetrical with respect to the material portion.

Due to the different arrangement of the individual material shares has the advantage that in case of failure, only one support tab fail, so break or break can. A simultaneous failure of both carrier tabs can be excluded. Consequently, the pressing tool can be operated more safely.

The term "proportion of material" is understood to mean a greater weight and volume training.

The greater proportion of material forms an integral part of the carrier lug. This means that the carrier flap with the larger material content is formed differently with respect to its outer shape than the carrier flap without the larger material content.

The larger proportion of material preferably has the same material properties as the rest the carrier tab on.

In addition, the pressing device comprises two spaced-apart support elements with the said larger material proportions. The two support elements are arranged relative to one another such that the carrier lug with the greater material content of the first carrier element lies above the carrier lug without the larger material portion of the second carrier element, and that the carrier lug without the greater proportion of material of the first carrier element is above the carrier tab with the larger material content of the second carrier element.

In other words, the two carrier element are not congruent, but opposite, arranged to each other. The two carrier elements are arranged asymmetrically with respect to a plane of symmetry extending between the two carrier elements.

This preferred embodiment has the advantage that in the event of failure of one of the carrier tabs, the pin on the other carrier tab will continue to hold. Thus, if the first carrier element in the region of the carrier lug breaks without the greater proportion of material, then the pressing element continues to hold in the second carrier element, specifically in the carrier lug with the larger material content. Thus, flying away of the pressing element is largely prevented.

In this embodiment, each bolt extends through a carrier tab, which is provided with the larger material portion and by another carrier tab, which is formed without the larger proportion of material.

In another embodiment, two spaced-apart support elements are arranged, wherein only one of the two support elements is formed with the said larger material portion.

In one variant, said larger material content of the carrier element in the region of a carrier lug with respect to an axis of symmetry is formed asymmetrically to the material portion of the carrier element region of the other carrier lug.

The two carrier tabs are therefore formed asymmetrically with respect to the axis of symmetry.

Preferably, in a variant, the axis of symmetry extends at right angles to a straight line connecting the two pivot axes, wherein the axis of symmetry preferably lies centrally between the two pivot axes. The straight line runs at right angles to the pivot axes. In another variant, the axis of symmetry can also extend at an angle to the said straight line.

In another variant, the axis of symmetry passes through the two pivot axes and at right angles to it.

Alternatively, the said larger proportion of material of a carrier lug with respect to a plane of symmetry is formed asymmetrically to the material portion of the other carrier lug.

Preferably, the plane of symmetry in a variant runs at right angles to a straight line connecting the two pivot axes and parallel to the pivot axes, wherein the plane of symmetry preferably lies centrally between the two pivot axes. The straight line runs at right angles to the pivot axes. In another variant, the plane of symmetry may also run at an angle to the said straight line.

In another variant, the plane of symmetry passes through the two pivot axes.

In a further variant, the plane of symmetry runs at right angles to the two pivot axes centrally through the carrier lug without a large proportion of material.

Preferably, the larger material content is greater by at least 1%. This means that the carrier lug with the larger material content has 1% more material than the carrier lug without the larger material content.

In a first embodiment, the larger proportion of material is arranged on an outer surface of the carrier lug, which outer surface is preferably substantially parallel to is oriented to the pivot axes.

In particular, the larger proportion of material is arranged exclusively on an outer surface.

In a second embodiment, the larger proportion of material is arranged on a front surface of the carrier lug, which front surface preferably extends substantially at right angles to the pivot axes.

In particular, the larger proportion of material is arranged exclusively on a front surface.

In a fourth embodiment, the larger proportion of material is arranged on an outer surface of the carrier lug and on a front surface of the carrier lug. The outer surface is preferably oriented substantially parallel to the pivot axes. The front surface preferably extends substantially at right angles to the pivot axes.

Particularly preferably, the larger proportion of material, which is arranged in the region of the front surface, extends completely or only partially around the carrier opening.

Preferably, a predetermined breaking point is arranged in the region of the carrier lug without the larger proportion of material. With the predetermined breaking point, the fracture behavior can be further optimized.

In a first embodiment, two pressing elements are arranged in the form of pressing levers and the carrier element has two carrier openings, wherein the bolt extends through in each case one of the carrier openings and the bearing openings.

Preferably, the two pressing levers have at least two pressing jaws for applying the pressing force to the compact and the pivot axes are parallel to one another, whereby one pressing lever is pivotable about the one pivot axis and the other pressing lever about the other pivot axis from a starting position into a pressing position at the end of the pressing process, the pressing jaws along the pivot axes together form a substantially closed circle.

In a second embodiment, the pressing device in the form of a pressing sling, wherein both the pressing member and the support member has the shape of a loop member with which a pressing force can be applied to a compact.

In a third embodiment, the pressing device is in the form of a pressing sling, wherein the pressing element has the shape of a loop part, with which a pressing force can be applied to a compact, and wherein the support element is an element connecting two loop parts.

In a fourth embodiment, the pressing element is designed in the form of an intermediate jaw with two bearing openings and in particular can be connected to a press sling, the support element having two support openings. The bolt extends through in each case one of the carrier openings and the bearing openings extends therethrough.

In all embodiments, the bolt is preferably secured with a securing element connected to the bolt end.

Further embodiments are given in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

eine Explosionsansicht einer Pressvorrichtung nach einer ersten Ausführungsform mit Trägerelementen nach einer Variante der vorliegenden Erfindung;

Fig. 2

eine Frontansicht von einem Trägerelement, das in der Pressvorrichtung nach der Figur 1 eingesetzt wird;

Fig. 3

eine Seitenansicht des Trägerelementes nach Figur 2;

Fig. 4

eine Explosionsansicht einer Pressvorrichtung nach einer ersten Ausführungsform mit Trägerelementen nach einer weiteren Variante der vorliegenden Erfindung;

Fig. 5

eine Frontansicht von einem Trägerelement, das in der Pressvorrichtung nach der Figur 4 eingesetzt wird;

Fig. 6

eine Frontansicht des Trägerelementes nach Figur 4;

Fig. 7

eine perspektivische Ansicht einer Pressvorrichtung gemäss einer weiteren Ausführungsform;

Fig. 8

eine perspektivische Ansicht einer Pressvorrichtung gemäss einer weiteren Ausführungsform; und

Fig. 9

eine Schnittdarstellung einer Pressvorrichtung nach einer weiteren Ausführungsform der vorliegenden Erfindung.

Preferred embodiments of the invention will be described below with reference to the drawings, which are given by way of illustration only and are not to be interpreted as limiting. In the drawings show:

Fig. 1

an exploded view of a pressing device according to a first embodiment with support elements according to a variant of the present invention;

Fig. 2

a front view of a support element, which in the pressing device according to the FIG. 1 is used;

Fig. 3

a side view of the support element according to FIG. 2 ;

Fig. 4

an exploded view of a pressing device according to a first embodiment with support elements according to a further variant of the present invention;

Fig. 5

a front view of a support element, which in the pressing device according to the FIG. 4 is used;

Fig. 6

a front view of the support element according to FIG. 4 ;

Fig. 7

a perspective view of a pressing device according to another embodiment;

Fig. 8

a perspective view of a pressing device according to another embodiment; and

Fig. 9

a sectional view of a pressing device according to another embodiment of the present invention.

DESCRIPTION OF PREFERRED EMBODIMENTS

In the FIG. 1 and the FIG. 4 a pressing device 1 is shown. The pressing device shown here is a so-called pressing jaw. In the FIGS. 7 and 8 Further pressing devices are shown, which take the form of a press sling ( FIG. 7 ) and the shape of an intermediate jaw ( FIG. 8 ) respectively. In all figures, like parts bear like reference numerals.

The pressing device 1 comprises at least one carrier element 2 and at least one pressing element 7, 8. The carrier element 2 has at least two carrier tabs 3, 4, in which in each case at least one carrier opening 5, 6 is arranged. That is, in each of the carrier straps 3, 4 each have a support opening 5, 6 is arranged. The pressing element 7, 8 here comprises in each case a bearing opening 14, 15 with which the pressing element 7, 8 can be mounted to the carrier elements 2. The pressing element 7, 8 serves to apply a pressing force to a compact. In this case, the pressing element 7, 8 about a pivot axis A1 and A2 pivotally mounted on the carrier element 2. For the storage per pressing element 7, 8 depending on a bolt 9, 10 is present. The bolt 9, 10 extends through the support opening 5, 6 of the support elements 2 and through the bearing opening 14, 15 on the pressing element 7, 8 therethrough. End is the bolt 9, 10 each secured with a securing element 17, with which the bolt is in communication.

At least one of the carrier tabs 3, 4 is formed with a larger proportion of material than the other of the carrier tabs 4, 3. In the embodiments shown, the carrier tab 3 is provided with a larger material portion 11. The other carrier lug, namely the carrier lug 4, has no larger proportion of material 11. That is, the carrier lug 3 is formed asymmetrically to the carrier lug 4.

The arrangement of the larger material portion 11 is in the embodiment according to the FIGS. 1 to 3 different from those according to the FIGS. 4 to 6 , This will be explained in more detail below.

The pressing element 7, 8 is in the FIGS. 1 and 4 designed as a press lever. There are two pressure levers arranged, which are connected to two carrier elements 2 with each other. In the embodiment shown the FIGS. 1 and 4 are two spaced apart carrier elements 2 before. Each of the carrier elements 2 in this case has a carrier tab 3 with the said larger material portion 11.

The two pressing levers 7, 8 have at least two pressing jaws 20, 21 for applying the pressing force to the compact. The pivot axes A1, A2 are parallel to each other, wherein the one pressing lever 7 about the one pivot axis A1 and the other press lever 8 about the other pivot axis A2 are pivotable from a starting position into a pressing position such that at the end of the pressing process, the pressing jaws 7, 8 along the pivot axes A1, A2 together form a substantially closed circle.

The two carrier elements 2 are arranged relative to one another in such a way that the carrier lug 3 with the larger material portion 11 of the first carrier element lies above the carrier lug 4 without the larger material portion of the second carrier element 2. The carrier lug 3 without the larger material content of the first carrier element lies above the carrier lug 3 with the larger material portion 11 of the second carrier element 2. That is, the carrier lugs are arranged with respect to the larger material portion 11 such that the larger material portions 11 are not opposite each other. In other words, the support elements 2 are such that each carrier tab 3 with the larger Material portion 11 is assigned a carrier tab 4 without the larger material content. Each of the axes A1, A2 thus extends through a carrier lug 3 with the larger material portion 11 and through a carrier lug 4 without the larger material content.

In the embodiment shown, each of the support elements between the two carrier tabs 3, 4 additionally comprises a connecting tab 18 with an opening 19. The connecting tab 18, the pressing device 1 can be connected to a machine for applying a pressing force to the pressing elements 7, 8.

Based on FIGS. 2 and 3 Now, a first possible embodiment of the support elements 2 will be explained in more detail. In this embodiment shown, a larger proportion of material 11 is arranged on the front surface 13 of the carrier lug 3. This can be done by the FIG. 3 showing the side view, be particularly well recognized. The larger material portion 11 thus extends from the front surface 13 between the two support openings 5, 6 away. The larger material portion 11 preferably extends substantially completely around the carrier opening 5. The extent here is preferably substantially constant around the entire carrier opening. The larger material portion 11 thus has the shape of a ring which extends around the support opening 5 around. Alternatively, the larger material portion 11 may also be formed such that it surrounds the support opening 5 only partially.

The front surface 13 is the surface which faces away from the pressing elements 7, 8.

In order to reinforce the effect of the asymmetry, material was additionally removed here around the support opening 6 in the area of the carrier lug 4, that is, the carrier lug, which is formed without the larger proportion of material, so that the area around the carrier opening 6 is somewhat thinner is. This material removal is optional.

With respect to the asymmetry of the two carrier tabs 3, 4, the following can be said. The two carrier tabs 3, 4 are arranged asymmetrically with respect to a plane of symmetry S. The plane of symmetry S extends at right angles to a straight line G, which connects the two parallel pivot axes A1, A2. In addition, the plane of symmetry S runs parallel to the pivot axes A1, A2 and lies in the middle between the two pivot axes A1, A2. That is, the said larger material portion 11 of a carrier lug 2 is formed here asymmetrically with respect to the plane of symmetry to the material portion of the other carrier lug 4.

With regard to a plane of symmetry U, one could also say that the carrier lug 3 is asymmetrical with respect to the other carrier lug 4 to the plane of symmetry U which runs at right angles to the two pivot axes A1, A2 centrally through the carrier lug 4 without the larger material portion. Alternatively, the plane of symmetry could also run through the two pivot axes, the plane of symmetry then bearing the reference symbol T.

The definition of the symmetry can also be made via corresponding axes of symmetry.

In the FIGS. 5 and 6 a further embodiment of the carrier straps 3, 4 is shown with the larger material portion 11. Here, the larger material portion 11 is disposed on an outer surface 12 of the carrier lug 3. This is shown by the hatched areas. The larger material content 11 supplements the outer surface 12 to the outside, so to speak. The outer surface 12 is oriented here parallel to the pivot axes A1, A2. In the variant after the FIG. 5 a predetermined breaking point 16 is provided, wherein a further larger proportion of material 28 adjoins the said larger proportion of material and also extends around the other carrier lug 4 without the larger material portion 11 around. Due to the formation of the material portion 28, which extends only in sections around the support opening around, a predetermined breaking point 16 can be created. In sum, however, the proportion of material in the carrier lug 3 is always greater than in the carrier lug 3. In the variant according to the FIG. 6 two predetermined breaking points 16 are provided.

Regarding the asymmetry can be to the FIGS. 5 and 6 It should be noted that the carrier tab 3 is asymmetrical with respect to an axis of symmetry X which is between the two carrier tabs 3, 4. The axis of symmetry X extends at right angles to one of the two pivot axes A1, A2 connecting straight line, wherein the axis of symmetry X is preferably located centrally between the two pivot axes A1, A2. However, the symmetry axis can also run at right angles to and through the two pivot axes A1, A2.

Both the carrier tab 2 according to the FIGS. 2 and 3 as well as the carrier tab 2 according to the FIGS. 5 and 6 here comprises an optional predetermined breaking point 16. The predetermined breaking point 16 is formed as a notch in the region of the transition to the connecting plate 18. On this breaking point 18 but can also be dispensed with.

How out FIG. 7 shows, the pressing device 1 has in the form of a press loop on two pressing elements 7, 8 as well as a support member 2 in the form of a loop member, with which the pressing force can be applied to a compact. In this case, two bolts 9, 10 extend parallel to each other through the two support openings 5, 6 or bearing openings 14, 15 of the support member 2 and the pressing elements 7, 8, so that the two pivot axes A1, A2 also come to lie parallel to each other. The carrier element 2 also has two carrier tabs 3, 4, wherein the carrier tab 3 is formed with the larger material portion 11. The carrier lug 4 is formed without the larger material portion 11.

The pressing elements 7, 8 and the carrier element 2 each have a pressing jaw receiving 22 with a receiving surface, in which the pressing jaws 20 are incorporated. The pressing elements 7, 8 in the form of the loop parts are connected at one end to the carrier element 2 through the bolts, while each other end is an unconnected, free end, between which free ends a distance to form a closing point is provided. At the end of the pressing process, these two free ends are at a minimum distance from each other and the press sling then has a substantially cylindrical cross-section. At the free ends of the press loop, ie at the closing point, are connecting pin 23 and grooves 24, to which an intermediate jaw, such as in FIG. 8 shown, can be recognized. The increased proportion of material could also be in the area of the free ends and the bolt connection.

In FIG. 8 is a pressing device 1 comprising a carrier element 2 with two carrier openings 5, 6 and a pressing element in the form of an intermediate jaw with two bearing openings shown. A bolt 9, 10 extends through each one of the support openings 5, 6 and the bearing openings 14, 15 therethrough. The intermediate jaw is with two jaw levers 25 are formed, which open at one end into a claw 26. This claw 26 can be in grooves 27 of a press loop such as in FIG. 7 Insert shown and hang in the connecting pin 23. In the connected position, the claw 26 completely surrounds the connecting pins 23 of the press sling. By the jaw levers 25 are then moved towards each other, the free ends of the press sling are also moved towards each other and there is a pressing of the looped by the press sling compact. To this end, the jaw levers 25 are pivotally mounted on the carrier element 2 in a manner analogous to the pressing levers via a respective pivot axis A1, A2 and thus pivotable from the starting position, in which compression of the compact has not occurred, into the pressing position in which the compact is compressed.

The carrier lug 3 of the carrier element 2 is in turn provided here with a larger proportion of material 11. The carrier lug 4 has no greater proportion of material. Regarding the arrangement of the larger material content is to the above description in connection with the FIGS. 1 to 6 directed.

In the FIG. 9 another embodiment of the present invention is shown. Reference is made in this regard to the previous description. Identical parts are provided with the same reference numerals. In this embodiment, two spaced-apart support elements are arranged, wherein only one of the two support elements 2 is formed with the said larger material portion 11. LIST OF REFERENCE NUMBERS 1 pressing device G Just 2 support element S plane of symmetry 3 support strap T plane of symmetry 4 support strap U plane of symmetry 5 support opening X axis of symmetry 6 support opening Y axis of symmetry 7 press member 8th press member 9 bolt 10 bolt 11 larger material content 12 outer surface 13 front surface 14 bearing opening 15 bearing opening 16 Breaking point 17 fuse element 18 connecting strap 19 opening 20 pressing jaw 21 pressing jaw 22 Jaw head 23 connecting bolts 24 groove 25 Back levers 26 claw 27 groove 28 additional material content

Claims (14)

1. Pressing device (1) comprising
   at least one carrier element (2) with at least two carrier lugs (3, 4), in each of which at least one carrier opening (5, 6) is arranged, and
   at least one pressing element (7, 8) with at least one bearing opening (14, 15), for applying a pressing force to a workpiece, wherein the at least one pressing element (7, 8) is mounted on the carrier element (2) such that it can be pivoted about at least one pivot axis (A1, A2), wherein a respective bolt (9, 10) extends through the at least one carrier opening (5, 6) and the bearing opening (14, 15), said bolt providing the bearing means and the pivot axis (A1, A2),
   wherein at least one of the carrier lugs (3) is formed with a larger material fraction (11) than the other one of the carrier lugs (4), characterized in that two spaced-apart carrier elements (2) with the said larger material fractions (11) are arranged, wherein the carrier elements (2) are arranged in relation to one another such that the carrier lug (3) with the larger material fraction (11) of the first carrier element (2) is located above the carrier lug (4) without the larger material fraction of the second carrier element (2), and in that the carrier lug (4) without the larger material fraction (11) of the first carrier element (2) is located above the carrier lug (3) with the larger material fraction of the second carrier element (2).
2. Pressing device (1) according to one of the preceding claims, characterized in that the said larger material fraction (11) of the carrier element (2) in the region of the one carrier lug (3) is formed asymmetrically in relation to the material fraction of the carrier element (2) region of the other carrier lug (4) as seen in respect of an axis of symmetry (X, Y).
3. Pressing device (1) according to Claim 2, characterized in that the axis of symmetry (X) runs at right angles to a straight line (G) which connects the two pivot axes (A1, A2), wherein the axis of symmetry (X) is located preferably centrally between the two pivot axes (A1, A2), or in that the axis of symmetry (Y) runs at right angles to the, and through the, two pivot axes (A1, A2).
4. Pressing device (1) according to Claim 1, characterized in that the said larger material fraction (11) of the one carrier lug (3) is formed asymmetrically in relation to the material fraction of the other carrier lug (4) as seen in respect of a symmetry plane (S, T, U).
5. Pressing device (1) according to Claim 4, characterized
   in that the symmetry plane (S) runs at right angles to a straight line (G) which connects the two pivot axes (A1, A2) and parallel to the pivot axes (A1, A2), wherein the symmetry plane (S) is located preferably centrally between the two pivot axes (A1, A2);
   or in that the symmetry plane (T) runs through the two pivot axes;
   or in that the symmetry plane (U) runs, at right angles to the two pivot axes (A1, A2), centrally through the carrier lug without the larger material fraction.
6. Pressing device (1) according to one of the preceding claims, characterized in that the larger material fraction (11) is larger by at least 1%.
7. Pressing device (1) according to one of the preceding claims, characterized in that the larger material fraction (11) is arranged on an outer surface (12) of the carrier lug (3, 4), which outer surface (12) is oriented preferably essentially parallel to the pivot axes (A1, A2).
8. Pressing device (1) according to one of the preceding claims, characterized in that the larger material fraction (11) is arranged on a front surface (13) of the carrier lug (3, 4), which front surface (13) runs preferably essentially at right angles to the pivot axes (A1, A2).
9. Pressing device (1) according to Claim 8, characterized in that the larger material fraction (13) extends in full, or just to some extent, around the carrier opening (5, 6).
10. Pressing device (1) according to one of the preceding claims, characterized in that a predetermined breaking point (16) is arranged in the region of the carrier lug (3) with the larger material fraction (11); and/or in that a predetermined breaking point is arranged in the region of the carrier lug (4) without the larger material fraction.
11. Pressing device (1) according to one of Claims 1 to 10, characterized in that two pressing elements (7, 8) in the form of pressing levers are arranged, and in that the carrier element (2) has two carrier openings (5, 6), wherein the bolt (9, 10) extends through in each case one of the carrier openings (5, 6) and of the bearing openings (13, 14).
12. Pressing device according to Claim 11, characterized in that the two pressing levers (7, 8) have at least two pressing jaws for applying the pressing force to the workpiece, and in that the pivot axes (A1, A2) are located parallel to one another, wherein the one pressing lever (7) can be pivoted about the one pivot axis (A1), and the other pressing lever (8) can be pivoted about the other pivot axis (A2), from a starting position into a pressing position such that, at the end of the pressing operation, the pressing jaws (7, 8) together form an essentially closed circle, as seen along the pivot axes (A1, A2).
13. Pressing device according to one of preceding Claims 1 to 10, characterized
    in that the pressing device is in the form of a press sling, wherein both the pressing element (7, 8) and the carrier element (2) are in the form of a sling part which can apply a pressing force to a workpiece, or
    in that the pressing device is in the form of a press sling, wherein the pressing element (7, 8) is in the form of a sling part which can apply a pressing force to a workpiece, and wherein the carrier element (2) is an element which connects two sling parts; or
    in that the pressing element is designed in the form of an intermediate jaw with two bearing openings (14, 15) and can be connected in particular to a press sling, and in that the carrier element (2) has two carrier openings (5, 6), wherein the bolt (9, 10) extends through in each case one of the carrier openings (5, 6) and of the bearing openings (14, 15).
14. Pressing device according to one of the preceding claims, characterized in that the bolt is secured by a securing element (17) which is connected to the bolt end.

Images