PRESSING TOOL PART AND DEVICE FOR ELIMINATING FLATNESS DEFECTS ON PLANAR SEMIFINISHED PRODUCTS

Abstract

A pressing tool part for eliminating a flatness defect on a flat semi-finished product provided with a pressing surface facing the flat semi-finished product. The pressing tool includes part half segments separated from each other by a material weakening, which are connected to one another on the one hand to by an elastically bendable bending bridge region of the pressing tool part, and on the other hand to a common actuator in order to elastically deform the pressing surface of the pressing tool part as a function of the flatness defect.

Claims

1-24. (canceled)

25. Pressing tool par for eliminating flatness defects on a semi-finished product comprising: a pressing surface, facing the flat semi-finished product, wherein the pressing tool part is provided with part half sections separated from each other with a material weakening, which are on the one hand operationally connected by an elastically bendable bending bridge region of the pressing tool to each other, and on the other had are also operationally connected to a common actuator for elastic deformation of the pressing surface of the pressing tool part in dependence on the flatness defect.

26. The pressing tool part according to claim 25, wherein the common actuator is attached directly to the part half sections.

27. The pressing tool part according to claim 25, wherein the part half sections that are separated from each other are operationally connected to each other by the common actuator.

28. The pressing tool part according to claim 25, wherein the common actuator is supported or carried by the pressing tool part.

29. The pressing tool part according to claim 25, wherein the common actuator is integrated in the pressing tool part.

30. The pressing tool part according to claim 25, wherein the common actuator comprises a hydraulic cylinder unit.

31. The pressing tool part according to claim 25, wherein the common actuator comprises a cylinder chamber, which is equipped with one of the part half sections of the pressing tool.

32. The pressing tool part according to claim 25, wherein the common actuator comprises a piston element, wherein a first end of the piston element is interactively connected to a first part half segment of the pressing tool part and a second end of the piston element is interactively connected to a second part half segment of the pressing tool part.

33. The pressing tool part according to claim 25, wherein the common actuator is arranged by the pressing tool part on a movable ram of a device for eliminating flatness defects on a flat semi-finished product, or on a press table.

34. The pressing tool part according to claim 25, wherein the pressing tool part comprises a fluid connection device for a fluidic operation of the common actuator.

35. The pressing tool part according to claim 25, wherein the pressing tool part comprises a divided support frame part, in which is integrated the common actuator.

36. The pressing tool part according to claim 25, wherein the pressing tool part is subdivided with the material weakening into two of the part half segments having a same size.

37. The pressing tool part according to claim 25, wherein the material weakening extends starting from the elastically bendable bending bridge region along a plane extending perpendicularly to the pressing surface.

38. The pressing tool part according to claim 25, wherein the part half segments of the pressing tool are movably supported in a press ram.

39. The pressing tool part according to one of the claim 25, wherein the pressing tool part comprise means for influencing a rigidity of the pressing tool part.

40. The pressing tool part according to claim 39, wherein the means for influencing the rigidity of the pressing tool part comprise at least one press chamber, which is integrated in the pressing tool part.

41. The pressing tool part according to claim 39, wherein the means for influencing the rigidity of the pressing tool part comprises at least one other hydraulic cylinder unit that is integrated in the pressing tool part.

42. The pressing tool part according to claim 41, wherein the means for influencing the rigidity of the pressing part comprises at least one wedge mechanism unit that is integrated in the pressing tool part, wherein the wedge mechanism unit is provided with at least one wedge element that is movable relative to the pressing tool part.

43. The pressing tool part according to claim 25, wherein the pressing tool part comprises a holding-down device that is translationally movable perpendicularly to the pressing surface of the pressing tool part for holding down the pressing tool part.

44. The pressing tool part according to claim 25, wherein the pressing tool part comprises a driving device, by which it can be moved from an operating position defined via the pressing tool into a changing position located next to the pressing tool.

45. The pressing tool part according to claim 25, wherein the pressing surface of the pressing tool is configured by a pressing surface region, which is equipped with a pressing surface width that is greater than the width of the flat semi-finished product.

46. A device for eliminating flatness defects on flat semi-finished products, comprising: a straightening press provided with a machine frame on which is mounted a press ram that is movable in a pressing direction opposite a press table, and with a pressing tool comprising a pressing tool part equipped with at least one pressing surface, by which can be removed flatness defects on a flat semi-finished product, wherein the device is equipped with a pressing tool part.

47. The device according to claim 46, wherein the device is provided with a tilting device by which the pressing tool part is tiltably mounted about a tilting axis that is extending parallel to the pressing surface on the press ram or on the machine frame.

48. The device according to claim 47, wherein the tilting device comprises at least one, hydraulic cylinder unit acting between the press ram and the machine frame in order to tilt the press ram about the tilting axis.

Description

[0073] The drawings show the following:

[0074] FIG. 1 a schematic drawing showing a view of a straightening press having a pressing tool part according to the invention and a tilting device for tilting this pressing tool part about a tilting axis extending parallel to the pressing surface;

[0075] FIG. 2 a schematic drawing showing a view of an alternative of pressing tool part provided with an actuator without a supporting frame for receiving the actuator;

[0076] FIG. 3 a schematic view of another pressing tool part provided with means for influencing the rigidity comprising two pressure chambers arranged inside the pressing tool part;

[0077] FIG. 4 a schematic view of yet another pressing tool part provided with means for influencing the rigidity comprising two hydraulic cylinder units arranged inside the pressing tool part;

[0078] FIG. 5 a schematic view of a pressing tool part with means for influencing the rigidity comprising two wedge mechanism units arranged inside the pressing tool part;

[0079] FIG. 6 a schematic view of a pressing tool part provided with holding-down means that is translationally movable perpendicularly to the pressing surface for holding down a flat semi-finished product;

[0080] FIG. 7 a schematic view of a pressing tool part provided with a driving device for replacing the pressing tool transversely to a pressing direction.

[0081] The pressing tool part 1 shown in FIG. 1 is a component part of a pressing tool employed in an apparatus 2 for eliminating flatness defects (not shown) with a pressing tool on a flat semi-finished product 3 of a pressing tool (not explicitly numbered), and it corresponds to another pressing tool part 4, which is in this embodiment represented below the flat semi-finished product 3 by a press table 5 of the apparatus 2.

[0082] On the other hand, the pressing tool 1 is supported on a press table 5 that is movable relative to the press ram 6 and thus above the flat semi-finished product 3, so that the pressing tool part 1 can be moved in the pressing direction 7 to make it possible to exert pressing forces on the flat semi-finished product placed on the press table 5.

[0083] In this respect, the press table 5 is fixed and the press ram 6 is displaceably arranged on two stator elements 8 and 9 of a machine frame 10 of the apparatus 2.

[0084] Moreover, the press ram 6 is provided with an articulated connection 11, by means of which two press rams 12 and 13 are mutually connected with an articulated connection, so that a higher inherent flexibility is provided for the pres ram 6.

[0085] The apparatus 2 for eliminating flatness defects on a flat semi-finished product is configured as a straightening press 15, which is used solely for the purpose of eliminating flatness defects on a flat semi-finished product 3.

[0086] In this respect, the pressing tool part 1 is also and preferably exclusively used for eliminating flatness defects on a flat semi-finished product 3. More specifically, the pressing tool part 1 is a flatness defect straightening tool part (not indicated with a separate number).

[0087] The pressing tool part 1 is on its lower side provided with a pressing surface region 21, which is configured with a pressing surface 22 facing a flat semi-finished product 3.

[0088] So that several flatness defects on the flat semi-finished product 3 could be eliminated in a single pressing operation, or at least in very few pressing operations, the pressing surface region 21 of the pressing tool part 1 is provided with a pressing surface width 23 that is greater than the width 24 of the flat semi-finished product 3.

[0089] Further, the pressing tool part 1 is subdivided with a material weakening 25 into two part half portions 26 and 27 that are mutually separated from one another, wherein in this embodiment, an elastic bendable bending bridge region 28 of the pressing tool 1 is also provided under the material weakening 25, by means of which the two part half portions 26 and 27 are physically connected to one another.

[0090] The pressing tool part 1 is thus configured in such a way that the material weakening 265 defines a dividing plane 30, wherein the first part half portion 26 is located on a first part side 31 of the dividing plane 30, and the second part half portion 27 is arranged on a second part 32 located on the dividing plane 30 opposite the first side 31.

[0091] The material weakening 25 is thus delimited by three inner sides of the pressing tool part 1, in particular by the sides (not additionally labeled with numbers) of the two part half portions 26 and 27 and by the elastically bendable bridge portion 28.

[0092] In this respect, the material weakening 25 extends, starting from the elastically bendable bridge region 28, in the upward direction along this dividing plane 30.

[0093] The pressing tool part 1 thus undergoes a structural weakening with the material weakening 25, whereby it can be deformed or bent more easily.

[0094] The relevant deformation forces or bending forces are applied as working forces with an actuator 35, which is accordingly operationally connected with the two part half portions 26 and 27.

[0095] In this first embodiment, the pressing tool part 1 is designed with a divided support frame 36, which is integrally connected with the pressing tool part 1, extending upward and to the right. The advantage obtained in this manner is that the actuator 35 can be arranged further in the upward direction and thus at a distance from the press ram 6.

[0096] In this case, the divided support frame 36 is operationally connected via a first frame part half portion 37, which is rigidly connected to the first part half portion 26, and via a second frame part half portion 38, which is rigidly connected to the second part half portion 27.

[0097] The first frame part half portion 37 is thus an extension of the first part half portion 26 of the pressing tool part 1, and the second frame part half portion 28 is a corresponding extension of the second part half portion 27 of the pressing tool part 1. The actuator 35 is thus already very well integrated in the pressing tool part 1.

[0098] Therefore, since the actuator is arranged by means of the divided support frame part 36 so that it is located further away from the elastically bendable bending bridge region 28, the lever ratios are improved with respect to the actuator 35 and of the elastically bendable bending bridge 28, so that smaller working forces need to be generated by the actuator 35 to make it possible to set the desired deformation on the pressing tool part 1.

[0099] Due to these advantageous lever ratios, a smaller design of the actuator 35 can be used because less of the working needs to be exhibited in order deform the pressing tool part 1. This is supported also by the articulated and subdivided press ram 6 because it can perform deformation, and in particular as a function the bending and deforming forces to be applied as working force by the actuator 35.

[0100] Furthermore, the accessibility of the actuator 35 is also improved.

[0101] Because the divided support frame 36 is rigid rather than articulated, this means that it is connected the actual pressing tool part 1 without the interposition of joints or of a transmission. Thus it can be said that within the context of the present invention, the actuator 35 is attached directly to the part half portions 26 and 27. Therefore, the setting of the forces affecting a deformation or bending operation carried out on the pressing tool part 1 can be performed more precisely because the working forces are applied by the actuator in an ideal manner and without play, in particular when they can be applied in the elastically bendable bending bridge region 28.

[0102] In order to perform deforming or bending with the pressing tool 1, the actuator 35 is displaced or shortened according to the movement direction 39 that is perpendicular to the dividing plane 30, so that the two frame half portions 37 and 38 or the two part half portions 26 and 27 can be moved around the elastically bendable bending bridge region 28.

[0103] The actuator 35 is thus integrated in this manner in the divided support frame part 36, so that the part half portions 26 and 27 that are separated from one another are mutually connected to each other with an operational connection by means of the actuator 35.

[0104] In this first embodiment, the actuator 35 is designed as a hydraulic cylinder unit 40, wherein the cylinder chamber 41 of the hydraulic cylinder unit 40 is formed directly from the first frame part half portion 37 of the divided support frame part 36.

[0105] The corresponding piston element 42 of the hydraulic cylinder unit 40 is placed with its piston crown 43 in the cylinder chamber 41 and thus fixed to the first frame part half portion 37.

[0106] The piston element 42 of the hydraulic cylinder unit 40 is attached with its piston rod 44 to the second frame part half portion 38.

[0107] The actuator 35 or the hydraulic cylinder unit 40 is supplied with a hydraulic fluid by means of a correspondingly configured fluid connection device 45, wherein the fluid connection device 45 comprises at least one input and/or output connection 46 (labeled with a numeral only by way of an example) and at least one fluid line 47 used in order to secure a fluidic connection between the cylinder chamber 41 and a supply unit (not shown).

[0108] In this context, a first end 48 of the piston element 42 is interactively connected to the first part half portion 27 of the pressing tool part 1 and to a second end 49 of the piston element 42 with the second half portion 27 of the pressing tool part 1.

[0109] In particular, edge waves (not shown) in the flat semi-finished product 3 can be effectively prevented because the present apparatus 2 is cumulatively provided with a tilting device 50 having two further hydraulic cylinder units 51 and 52 arranged between the press ram 6 and the stationary elements 8 and 9 of the machine frame 10.

[0110] The press ram 6 and in particular the pressing tool part 1 can be tilted by means of this tilting device 50 about a tilting axis 53 extending parallel to the pressing surface 22 and supported on the press ram 6 or on the machine frame 10, wherein the interaction between pressing tool part 1 and the flat semi-finished product 3 can be used to extend the setting alternatives even further.

[0111] The other two hydraulic cylinder units 51 and 52 are respectively provided with hydraulic connections 54 (provided with a numeral only by way of an example), so that a hydraulic fluid can be supplied to them.

[0112] In the example of an alternative pressing tool 101 shown in FIG. 2, the support frame part 36 described above is dispensed with, so that the actuator 135 is arranged directly in the form of the hydraulic cylinder unit 140 next to the elastically bendable bending bridge region 128 and integrated in the pressing tool part 101.

[0113] Therefore, the construction of the pressing tool part 101 is even more compact, wherein the pressing tool part 101 is subdivided with the material weakening 125 into two part half portions 126 and 127.

[0114] These two part half sections 126 and 127 are thus again operationally connected to one another with a bendable bending bridge region 128 and the actuator 135.

[0115] As far as the operation of this second embodiment is concerned, reference is made to the embodiment described above so as to avoid repetitions.

[0116] According to another embodiment shown in FIG. 3, another pressing tool part 201 is equipped with means 255 for influencing the rigidity of the pressing tool part 201, which can be provided cumulatively or alternatively,

[0117] The means 255 for influencing the rigidity comprise in this embodiment two pressure chambers 256 and 257 for receiving hydraulic fluid, which are integrated directly in the pressing tool part 201; and in particular in the immediate vicinity of the pressing surface 222 of the pressing surface region 221.

[0118] The means 255 for influencing the rigidity further also comprise two supplying devices 258 and 259, wherein the first supplying device 258 is fluidically connected by means of a first fluid connection device 245A to the first pressure chamber 256 and the second supplying device 259 is fluidically connected by means of a fluid connection device to the second pressure chamber 257, so that each of these two pressure chambers 256 and 257 can be controlled independently from each other, wherein the variety of the regions on the pressing tool part 201 that are provided with different rigidity can be further increased.

[0119] Each of the two supplying devices 258 or 259 can be provided with at least one hydraulic fluid reservoir (labeled with a numeral only by way of an example), so that the pressure in the pressure 256 or 257 chambers can be set almost arbitrarily.

[0120] Depending on the which pressure level is set in the two pressure chambers 256 or 257, the rigidity of the pressing tool part 1 can be set differently throughout its pressure surface width 223.

[0121] Another pressing tool part 301 explained in the FIG. 4 is also provided with a means 355 for influencing the rigidity of the pressing tool part 301, which is further equipped with hydraulic cylinder units 364 and 365 arranged inside the pressing tool part 301 enabling to manipulate the rigidity on the pressing tool part 301. In this case, the cylinder chambers 366 (labeled with a numeral only by way of an example) of the other hydraulic cylinder units 364 and 365 themselves are configured directly with the pressing part tool 301, wherein the piston element 367 (labeled with a numeral only by way of an example), located in the cylinder chamber 366, can be moved with the impact of the hydraulic pressure in the pressing direction 7 (see FIG. 1), in order to set the pressures prevailing in the cylinder chambers 366. For this purpose, the means 355 include fluid connection devices 345 (labeled with a numeral only by way of an example), which are correspondingly designed for influencing the rigidity of the pressing tool part 301.

[0122] In the pressing tool part 401 illustrated according to FIG. 5, the means 455 for influencing the rigidity of the pressing tool part 401, which are again realized differently, include two wedge mechanism units 470 and 471, which are respectively arranged via cavities 473 or 474 incorporated in the pressing tool part 401.

[0123] Each of the wedge mechanism unit 470 and 471 is equipped with a wedge element 475 (labeled with a numeral only by way of an example), arranged in a fixed manner in the pressing tool part 401, and with an element 476 (labeled by a numeral only by way of an example) displaceable relative to the other element, wherein the mutually interacting wedge elements 475 and 476 are interacting with each other so that the rigidity can be varied as a function of the position of the movable wedge element 476 relative to the stationary wedge element 475.

[0124] The stationary wedge element 475 and the movable element 476, which is movable relative to the stationary element, respectively form a wedge pair 477 (labeled with a numeral only by way of an example) of the means 455 for influencing the rigidity of the pressing tool 401, which are placed in each case in the associated cavity 473 or 474 inside the pressing tool parts 401.

[0125] The movable wedge element 476 can be in this case moved with a suitably designed hydraulic device, not shown here, to the pressing surface 422, so that a wall section 478 (labeled with a numeral only by way of an example), facing the pressing surface 422 of the cavity 473 or 474 of the pressing tool part 401, can be more or less strongly supported, wherein the rigidity of the pressing tool part 401 can be again varied.

[0126] In should be again explicitly pointed out here that the contour of the pressing tool part can be changed cumulatively or alternatively with the means for influencing the rigidity.

[0127] Furthermore, another pressing tool 501 shown in FIG. 6 comprises two holding-down devices 580 and 581 that additionally hold down the flat semi-finished product 3 (see also FIG. 1) in the lateral edge regions 582 and 583 of the pressing tool part 501, wherein these holding-down devices 580 and 581 are in this embodiment placed laterally next to the actual pressing surface 522.

[0128] The two holding-down devices 580 and 581 are moved in this case laterally to the pressing surface 522 and they are driven to or out of the pressing tool part 501 in a direction that is parallel to the pressing direction 7. The holding-down devices 580 or 581 can be in this case addressed with a suitably designed hydraulic device, not illustrated here.

[0129] In the embodiment illustrated in FIG. 7, the pressing tool part 601 is provided with a driving device 685, by means of which the pressing tool part 601 can be displaced from a defined operating position 686, wherein it is mounted in a device 2 (see for example FIG. 1), so that the pressing tool part can be replaced by another pressing tool part 1, 101, 201, 301, 401, 501, etc.

[0130] The driving device 685 in this case includes wheels 688 (labeled with a numeral only by way of an example), which are supported on the lower side 620 of the pressing tool 601. Between two wheel pairs (not indicated with a numeral) is arranged the pressing surface 622.

[0131] In addition, the driving device 685 also includes a moving path cross member 689, on which the guided wheels 688 are moved.

[0132] It should be stated explicitly one more time here that the features of the solutions described above and in the claims and/or the solutions described in figures may be also combined and cumulated as appropriate to make it possible to achieve the characteristics, effects and advantages discussed above.

[0133] It is understood that that the embodiments described above are only first configurations of the invention. In this respect, the configuration of the invention is therefore not limited by the embodiments.

[0134] All the features disclosed in the application documents are claimed as being essential to the invention, to the extent that they are new individually or in combination with prior art.

LIST OF REFERENCE SYMBOLS

[0135] 1 pressing tool part [0136] 2 device [0137] 3 flat semi-finished product [0138] 4 another pressing tool part [0139] press table [0140] 6 movable press ram [0141] 7 press direction [0142] 8 right stationary element [0143] 9 left stationary element [0144] 11 articulated connection [0145] 12 first press ram region [0146] 13 second press ram region [0147] 15 right press [0148] 20 lower side [0149] 21 pressing surface region [0150] 22 pressing surface [0151] 23 pressing surface width [0152] 24 width [0153] 25 material weakening [0154] 26 first part half section [0155] 27 second part half section [0156] 28 bending bridge region [0157] 30 dividing plane [0158] 31 first side [0159] 32 second side [0160] 35 common actuator [0161] 36 divided support frame part [0162] 37 first frame part half section [0163] 38 second frame part half section [0164] 39 movement direction [0165] 40 hydraulic cylinder unit [0166] 41 cylinder chamber [0167] 42 piston element [0168] 43 piston crown [0169] 44 piston rod [0170] 45 fluid connection means [0171] 46 input and/or output connection [0172] 47 fluid line [0173] 48 first end [0174] 49 second end [0175] 50 tilting device [0176] 51 a first variant of a hydraulic cylinder unit [0177] 52 a second variant of a hydraulic cylinder unit [0178] 53 tilting axis [0179] 101 an alternative pressing tool part [0180] 125 material weakening [0181] 126 a first partial half section [0182] 127 a second partial half section [0183] 128 elastically bendable bending bridge section [0184] 135 actuator [0185] 140 hydraulic cylinder unit [0186] 201 another pressing tool part [0187] 221 pressing surface region [0188] 222 pressing surface [0189] 223 pressing surface width [0190] 245A first fluid connection device [0191] 245B second fluid connection device [0192] 255 means for influencing rigidity [0193] 256 first pressure chamber [0194] 257 second pressure chamber [0195] 258 first supplying device [0196] 259 second supplying device [0197] 260 hydraulic fluid reservoir [0198] 261 supplying pump [0199] 262 control valve [0200] 301 another pressing tool part [0201] 345 fluid connection devices [0202] 360 means for influencing rigidity [0203] 364 another first hydraulic cylinder unit [0204] 365 another second hydraulic cylinder unit [0205] 366 cylinder chambers [0206] 367 piston element [0207] 401 pressing tool part [0208] 422 pressing surface [0209] 460 means for influencing rigidity [0210] 470 first wedge mechanism unit [0211] 471 second mechanism unit [0212] 473 first cavity [0213] 474 second cavity [0214] 475 stationary wedge element [0215] 476 movable wedge element [0216] 477 wedge element pairs [0217] 478 wall sections [0218] 501 pressing tool part [0219] 522 pressing surface [0220] 580 first holding-down part [0221] 581 second holding-down part [0222] 582 first lateral edge region or corner region [0223] 583 second lateral edge region or corner region [0224] 601 pressing tool part [0225] 620 lower side [0226] 622 pressing surface [0227] 685 driving direction [0228] 686 operating position [0229] 687 replacement position [0230] 688 wheels [0231] 689 moving path cross member