WO2015193193A1

WO2015193193A1 - Arrangement for widening the functionality of a press

Info

Publication number: WO2015193193A1
Application number: PCT/EP2015/063183
Authority: WO
Inventors: Hubert Troppmann
Original assignee: Hubert Troppmann
Priority date: 2014-06-16
Filing date: 2015-06-12
Publication date: 2015-12-23
Also published as: EP3021993A1; CN106457332B; DE102014008879A1; CN106457332A

Abstract

Arrangement for widening the functionality of a press (1), in particular a column press, having an at least partially vertically extending press frame (2) for the processing, in particular forming, of, in particular metallic, objects or workpieces (80), comprising – a lower table device (10) which can be releasably fastened substantially horizontally to the press frame (2) of the press (1), and – an upper table device (30) which is arranged above the lower table device (10) so as to be displaceable substantially horizontally and/or vertically on this press frame (2), wherein the lower table device (10) is connected at least periodically to a swivel-bending lower beam (56) and the upper table device (30) is connected at least periodically to a swivel-bending upper beam (51) for carrying out a swivel-bending process, and wherein the upper table device (30) at least periodically receives a bending punch (34) and the lower table device (10) at least periodically receives a die (15a, b) for carrying out a bending-forming operation or an edge-folding operation.

Description

Device for expanding the functionality of a press

description

The present invention relates to a column press with a press frame, which - in the position of use of the press - has substantially vertically extending frame members.

The invention will be described below using the example of a so-called workshop press, which can be found in numerous craft enterprises, manufacturing plants, automotive workshops, etc. It should be understood that this example is not intended to limit the applicability of the present invention.

The aforementioned workshop presses usually have a height between 1, 5 and 2.5 m and a width between 0.5 and 1, 5 m. They have two spaced-apart columns, which are connected to each other in their upper and lower areas by cross members. For example, the vertical columns consist of two opposite ones

Flat profile bars, which have a number of vertically superimposed horizontal holes and bolts for supporting a pressed part. At the upper cross member of the column press a generally hydraulically actuated punch is arranged in the middle, which can move under pressure load down and a compressive force of the order of z. B. 5 to 50 tons.

The present invention has for its object to provide a device which increases the functionality of such a press.

This object is achieved by the subject matter of claim 1. Preferred developments of the invention are the subject of the dependent claims. The solution according to the invention makes it possible to remodel a conventionally constructed press, in particular a workshop press of the type described above, in such a way that it can also be used both for folding and for pivoting bending. For smaller companies and craft businesses, this makes it possible to provide these functions without having to purchase a special bending and / or folding machine. On the one hand, this reduces the investment requirements of these companies and, on the other hand, it can also save a considerable amount of space. For the purposes of the present invention, the term "press" means any

To understand pressing device having in use position vertically spaced, spaced-apart frame members, as well as a

Pressing device with at least one press ram, which is movable under the exercise of a pressing force vertically and parallel to the vertical frame elements. Preferably, the pressing device is a hydraulic pressing device with a slave cylinder whose piston is connected to the press ram and which can be acted upon by a master cylinder or by a hydraulic pump with pressure oil. One of the frame elements may have two columns arranged substantially vertically in the position of use. The term "undercounter device" is - in the sense of the teaching of technical mechanics - to understand the device that receives the workpiece to be formed or supported and receives the counterforce to the pressing device during forming. For this purpose, the under table device is detachable on

Frame attached, namely to the vertical frame elements, which in principle all kinds of a releasable attachment come into question. Thus, the lower table device by a clamping device on the side

Be held frame elements. The undercounter device may be bolted to the frame members or the like.

It is particularly advantageous if the undercounter device, in order to absorb the pressing force, uses the devices which are already used in the press are provided to support the workpiece to be pressed. In a preferred embodiment, these are stops that can be fixed in different heights of the frame. Particularly preferred are bolts which are inserted into corresponding holding openings, in particular in cylindrical bores, at least one of the frame elements.

By such attacks and bolts but can only be a vertical

To achieve support of the undercounter device. In order to fix the undercounter device differently also in the horizontal direction, it is preferably provided to provide a front carrying device running in the front region of the frame and a rear carrying device arranged in the rear region of the frame. The support means are longer than the lateral distance of the vertical frame members. If the support means, preferably by means of screws, fixed to each other, they clamp the frame between them. Preferably, these support means are designed as commercially available profiles, particularly preferably as a U-beam. The actual press table is then preferably secured between the U-beams, wherein preferably the press table is supported and fixed between a front U-beam and a rear U-beam by means of adjusting screws. An advantage of this embodiment is that the press table can be used on both sides.

For the purposes of the present invention, the term "upper table device" is to be understood as meaning a device which can be moved during or for a machining of a workpiece by means of the press ram relative to the undercounter device

Under-sink device and the press die arranged and can be moved by the press ram in the direction of the lower table device.

For the purposes of the invention, the term "pivoting bending device" is to be understood as meaning a device which serves for pivotally bending a workpiece with at least one pivoting bending lower beam and a swivel bending upper beam be connected to the undercounter device and / or the upper table device. Swivel bending lower beam and swivel bending upper beam (common

Bending cheeks) are each formed in particular with a metal profile. The bending cheeks can each be adapted to the desired shape of the workpiece and be interchangeable.

For this purpose, a Oberwangenstützträger is provided which is slidably supported in the press frame in the vertical direction. Preferably, for the displacement of plastic sliders, more preferably polyamide sliders used, whose shape is such that it adapts to the shape of the vertical frame elements. If the frame elements are formed from two flat profiles, the plastic sliders can be formed as a cuboid and guided between the flat profiles.

The upper table device is connected to an elastic device, preferably with a helical spring, with an upper cross member of the press, and is thus clamped in the direction of the press ram. This can do that

Lifting the upper table device in the direction of the upper cross member can be simplified after a reduction of the pressure acting on the ram pressure.

The Oberwangenstützträger is connected to a Oberwangenträger whose dimension preferably corresponds approximately to the dimension of the press table. Further preferably, the top beam and / or the press table are executed in their depth with slightly smaller dimensions, as corresponds to the depth of the press frame and formed with flat profiles press frame the distance of the flat profiles in this direction. The upper beam carrier is preferably U-shaped and receives on the open side of the U-profile bending punch, with which arranged on the press table workpieces can be reshaped. Preferably, the upper table device is adapted to a maximum working width of the punch. For use as a swivel bending device, a bending rail or swivel bending upper beam can be attached to the upper beam support, which particularly preferably has an angle profile. This angle profile is preferably reversible and finished on one side with a sharp edge and on the other side with a round edge, so that it is suitable for sharp-edged and for round-edged bending. The bending rail can in

different lengths and can be additional,

preferably have metallic support elements to absorb the forces during bending. For pivoting bending serves a bending cheek or Schwenkbiege lower cheek, which is arranged angularly movable on the lower table. For this purpose, preferably a pivoting bending lever, in which the pivoting bending lower cheek is preferably received adjustable. The swivel bending lever is one

Swivel axis A rotatable with, in particular two bearing flanges, the

Subtop device connected. By pressing the Schwenkbiegehebels a clamped within the press workpiece to the on

Upper beam carrier attached bending rail or swivel bending upper beam are deformed.

Preferably, the pivoting bending lower cheek, in particular for adaptation to a wall thickness of the workpiece, held within the pivoting bending lever with respect to the pivot axis A slidably. Particularly preferably, the swivel bending lower cheek is held within the swivel bending lever with one, two or more threaded spindles. With actuation of the at least one threaded spindle, the pivoting bending sub-cheek, in particular with a smaller wall thickness of the workpiece, moves in the direction of the pivot axis or, in particular with a larger wall thickness of the workpiece, of the

Swivel axis are removed. Preferably, the swivel bending lever is adjustable in length, in particular extendable or connectable with an extension piece, in particular for adapting the device to the bending stiffness of the workpiece to be machined. With increasing flexural rigidity of the swing bending lever can be extended for less effort. The swivel bending device can furthermore preferably have an angle stop which limits the bending angle to the desired dimension.

Preferably, the angle stop with a bearing flange of

Subtop device connected. Preferably, the angle stop has a knurled screw movable along a slide for limiting the rotation of the pivoting bending lever about the pivot axis A. The angle stop can, adjacent to the backdrop, angle markings and a

Angle indicator, in particular for more accurate positioning of the thumbscrew have. Preferably, the device has a swivel bending upper beam and a Oberwangenstützträger with identical mounting means for attachment, in particular for screwing to the upper table device, which can be preferably fixed with bolts to upper table flanges. An advantage of this embodiment is that the assembly and disassembly can be performed easier and faster.

Preferably, the upper table device has at least one

Upper cheek wearer, wherein at least one additional adjustable support member, preferably two additional adjustable support elements are mounted on the upper beam support, which are arranged and configured, the pivoting bending upper beam during the pivoting bending on the

Support press frame. Preferably, a arranged on the upper table device holding device is provided, on which a segmented high upper beam is mounted, wherein adjusting elements on a rear

Oberwangenstützträger are provided to fix a predetermined bending position. An advantage of this embodiment is that more complex bending work is possible with the additional segmented upper beam.

Further advantages, features and applications of the present invention will become apparent from the following description of the drawing. Show: 1 perspective and partially schematically a column press with a preferred embodiment of the device according to the invention,

2 is a partial schematic section through the device of Figure 1,

Fig. 3 in perspective and partially schematically the upper table device

(or upper beam support) of the device of Figure 1 with a

Abkantbeispiel,

4 perspective and partially schematically the Oberwangenstützträger with distance sliders of a preferred development,

Fig. 5 in perspective and partially schematically parts of the device for

Swivel bending with an angle stop,

FIG. 6 shows the column press of FIG. 1, wherein other parts than in FIG. 1 are marked to illustrate the invention,

Fig. 7 is a perspective and partially schematic rear view of

Column press according to a further embodiment, Fig. 8, the column press of Fig. 7 in a front view,

9 is a schematic cross-sectional view of the column press of FIGS. 7, and

10 is a schematic cross-sectional view of the column press according to a further embodiment. The device not associated press 1 has a frame 2 and a ram 6. The frame 2 has two vertical columns 3a, b and an upper and a lower horizontal cross member 8 a, 8b, which are respectively arranged in the opposite end portions of the columns 3a, b and connected thereto. The two columns 3a, b are made up of 2 each spaced apart flat profiles 9 a, 9 b, which are welded to a flat steel 9c. In the columns 3a, b are horizontally extending cylindrical holding openings 4 which serve, inter alia, to receive bolts 5 a, b. At the upper cross member of the press is the recorded in a press cylinder ram 6, which is hydraulically operated. In the present example, this is done manually with the hand lever 7. In this case, the ram 6 moves vertically in the direction of the lower cross member of the press 1. Due to the hydraulic or pneumatic forces arise up to 200 kN (20 tons) and more, so for example, a roller bearing from one

Can solve press connection.

On the press 1, the device according to the invention is attached, which the undercounter device 10, the upper table device 30 and a

Swing bending device 50 has. The upper table device 30 is connected with tension springs 38 to the press frame 2. The polyamide sliders 36 are located between the two flat sections 9a, 9b of the columns 3a, b and serve for the vertical guidance of the upper table device 30. When the punch 6 of the press 1 is extended, the upper table device 30 moves downwards in the direction of the lower table device 10 the springs 38 are extended and return the upper table device 30 in the absence of the pressing force back to its original position or in the direction of the upper cross member of the press 1. The upper table device 30 has a holding device 52 for the detachable swivel bending upper cheek 51 of the swivel bending device 50. The holding device 52 is designed as a flat profile and bolted to the top beam 31.

The under-counter device 10 has two U-beams 12, 13 and a press table 1 1. For attachment of the undertable device 10, the two U-beams 12, 13 in the desired working height on the bolts 5a, 5b, which are guided through holding openings 4 of the press 1, and then screwed with spacer tubes 14 such that the columns 3a, 3b of the press 1 between the two carriers 12, 13 and are held by the clamping force. The horizontal fixation of the press table 11 between the front U-beam 13 and the rear U-beam 12 via a screw connection. In the illustration according to FIG. 2, a die with two die halves 15a, 15b and a workpiece 80 is also located on the press table 11 in the illustration according to FIG. 2. As usual, the die serves to define the shaping of the bending process. On the press table 1 1 dies can be arranged with any shape and in particular mechanically releasably connected to the press table 1 1.

The trained with a U-shaped upper beam carrier or punch carrier 31 is connected to the ram 6. Within the bending die carrier 31, a bending punch 34 is received. Together with the die 15 a, 15 b of the punch 34 is used for bending the workpiece 80th Der

Bending punch carrier 31 has bores 32 both laterally and upwardly. Thumbscrews can be inserted into these holes, which serve to fix the punch 34 such that it can be positioned in both the vertical and horizontal directions.

Fig. 3 shows in perspective and partially schematically the upper table device 30 (or the upper beam support 31) in a design intended for edging. The upper table device 30 has a bending punch carrier 31, which also acts as a top beam carrier for the swivel bending conversion. The punch carrier 31 has both side, as well as above

Holes 32. Thumbscrews can be inserted into these holes, which serve to fix the punch 34 such that it can be positioned in both the vertical and horizontal directions. Fig. 4 shows in perspective and partially schematically the

Oberwangenstützträger or Biegestempelstützträger 37. On both sides of the Biegestempelstützträgers 37 flanges 35 a, 35 b are attached with sliders 36 [which are preferably made of polyamide or similar plastic material]. The Biegestempelstützträger 37 is with two screws with

Handwheels 39 as a height-adjustable support bearing of the swivel bending upper beam mounted, which are bolted to the flanges of Oberwangen- and Biegestempelträgers 37.

Fig. 5 shows in perspective and partially schematically parts of the device for pivoting bending with an angle stop 58. On the outside of one of the flanges of the Schwenkbiegehebels 53 is an angle stop 58, which is bolted to the bearing flange 54 of the lower beam carrier and a rotatable with the pivoting bending lever bearing connected angle indicator 59 has. With the knurled nut 60 and a wing nut 61 this can be fixed to the degree. The knurled nut 60 serves at the same time as a stop for the swivel bending lever 53.

The swivel bending lower cheek 56 is mounted within the swivel bending lever 53 with at least one threaded spindle 57. By means of at least one threaded spindle 57, the pivoting bending sub-cheek 56 with respect to

Swivel axis A are relocated, in particular for adaptation to the

Wall thickness of the workpiece 80.

The substantially L-shaped bending rail 51, which with the

Holding means 52 of the upper table device 30 is detachably connected, preferably has both a rounded edge and a sharp or substantially rectangular edge. Fig. 6 shows the column press of Fig. 1, wherein for clarity of the invention, other parts are marked as in Fig. 1. On the upper table device 30 is located on the front side a bending rail or swivel bending upper cheek 51 of the swivel bending device 50, which is screwed by means of a holding device 52 with the upper table device 30. The one of several parts

existing pivoting bending lever 53 has laterally flanges, which are rotatably connected to the bearing flanges 54 of the lower beam carrier to the pivot axis A shown in dashed lines and thus allow the storage and displacement of the pivoting bending lower cheek 56. Between the ends of the pivoting bending sub-cheek 56 and the pivoting bending lever 53 are located threaded spindles 57, which serve to shift the pivoting bending lower cheek 56 relative to the pivot axis A.

Figures 7 to 9 show a further embodiment of the device for expanding a press according to the present invention. FIG. 7 shows a perspective and partially schematic rear view of the column press 1, FIG. 8 shows a perspective and partially schematic view

Front view of this column press 1 and Figure 9 shows a schematic cross-sectional view of this column press. In this embodiment, the undercounter device has an upper blade 81 with an upper blade handle 83. A cheek support 37 can be used to hold down a workpiece. The upper blade 81 is biased by an adjustable support member which presses the upper blade 81 against a lower blade 81 'attached to a rear U-beam during cutting. One at the

Upper blade 81 and a cross member 8a mounted tension spring 82 supports a return movement of the upper blade 81. The upper blade 81 can be operated with the upper blade handle 83. Optionally, the upper blade 81 can also be operated with a hand lever of a hydraulic cylinder.

Preferably, a table frame 16 is configured axially displaceable for placing the workpieces. FIG. 10 shows a further development of the device for expanding the functionality of a press, in which the upper table device has been dismantled and a bevelled workpiece 80 'with a bending punch 34 can be bent into abutment against a die 15. The press table can be used on both sides, whereby the position of the die can be determined. Furthermore, the press table between the front and the rear U-beam can be supported by means of screws and thereby fixed. LIST OF REFERENCE NUMBERS

1 press

2 press frames

3a, 3b (press) columns

4 holding opening

5a, 5b bolts

6 press punches

7 hand lever

8a, 8b cross member

9a, 9b flat profiles

9 c flat steel

10 undercounter device

1 1 press table

12 rear U-beams

13 front U-beam

14 spacer tubes

15 die with die halves 15a, 15b

16 table frame

30 upper table device

31 upper beam or punch carrier

32 holes

34 bending punch

35a, 35b flanges

36 sliders

37 upper beam support beam

38 tension spring

39 screws with handwheels

50 swing bending device

51 bending rail

51 'high cheek

52 holding device

52 'support element 53 swivel bending lever

54 Bearing flange of the underbench device

56 bending cheek

57 threaded spindle

58 angle stop

59 angle indicator

60 knurled screw

61 wing nut

80 workpiece

80 'beveled workpiece

81 upper knife

81 'lower knife

82 tension spring

83 upper knife handle

A pivot axis

Claims

claims

1. Device for extending the functionality of a press (1),

in particular a column press, with an at least partially vertically extending press frame (2) for processing, in particular forming, of, in particular metallic, objects or

Workpieces (80), comprising

- A lower table device (10), which can be releasably fastened substantially horizontally on the press frame (2) of the press (1), and

- An upper table device (30) which above the lower table means (10) substantially horizontally and / or vertically thereto

Press frame (2) is arranged displaceably,

wherein the under-table device (10) is at least temporarily connected to a swivel-bending lower beam (56) and the upper-table device (30) is at least temporarily connected to a swivel-bending upper beam (51) for performing a swivel-bending process, and wherein the upper-table device (30) is at least temporarily one

Bending punch (34) and the lower table device (10) at least temporarily receives a die (15a, 15b) for performing a bending deformation or a Abkantens.

2. Device according to claim 1, characterized in that the

Underbench device (10) at least one front support means (13), in particular a U-carrier, a rear support means (12), in particular a U-carrier, and at least one intermediate therebetween press table (11), wherein

preferably the press table (1 1) between the front U-beam (13) and the rear U-beam (12) is fixed, in particular by means

Set screws are supported and determined, and where

Preferably, the upper table device is adapted to a maximum working width of the punch.

3. A device according to claim 2, characterized in that the front support means (13), the rear support means (12) and the press table (1 1) are at least partially screwed together and supported on the press frame (2), wherein the support in particular by bolts (5a, 5b), which are guided by holding openings (4) in the press frame (2).

4. Device according to one of claims 1 to 3, characterized in that the upper table device (30) at least one, in particular horizontally and / or vertically, positionable Oberwangenträger (31) into which the bending punch (34) is receivable and / or positionable ,

5. Device according to one of claims 1 to 4, characterized in that the pivoting bending upper beam (51) by a

Oberwangenstützträger (37) is held, which is held by a sliding device (36) in the press frame (2) vertically movable.

6. Apparatus according to claim 5, characterized in that the

Swivel bending upper cheek (51) with the Oberwangenstützträger (37) by an elastic means (38), preferably formed with tension springs, in a direction away from the lower table means (10) direction is braced.

7. Device according to one of claims 1 to 6, characterized in that the upper table device (30) with at least one bending rail (51) is connectable, which the pivoting bending upper beam (51) of a

Forms pivoting device (50) of the device.

8. The device according to claim 7, characterized in that the

Bending rail (51) with a holding device (52) can be screwed, wherein the holding device (52) is arranged on the upper table device (30).

9. Device according to one of claims 1 to 8, with a

Pivotal bending lever (53) for holding the swivel bending lower cheek (56), wherein the swivel bending lever (53) is connected to a rotatable axis A, in particular two bearing flanges (54), the undercounter device (10).

10. The device according to claim 9, wherein the pivoting bending lower cheek (56), in particular for adaptation to a wall thickness of a workpiece (80), within the pivoting bending lever (53) is held displaceable relative to the pivot axis A.

1 1. A device according to any one of claims 9 or 10, with a

Angle stop (58) which is connected to, in particular one of the bearing flanges (54), the lower table device (10) and a rotation of the pivoting bending lower cheek (56) and the Schwenkbiegehebels (53) about the pivot axis A and the bending angle limit ,

12. The apparatus according to claim 11, wherein the angle stop (58) a

along a backdrop movable thumbscrew (60) for limiting the rotation of the Schwenkbiegehebels (53) about the pivot axis A and the bending angle.

13. Device according to one of claims 9 to 12, wherein the

Swivel bending lever (53), in particular for adapting the device to the bending stiffness of the workpiece (80), is adjustable in length.

14. Device according to one of claims 1 to 13, characterized by the swivel bending upper cheek (51) and a Oberwangenstützträger (37) with identical mounting means for fastening, in particular for screwing to the upper table device (10), preferably with bolts to upper table flanges ( 35a, 35b) are detected.

15. The device according to claim 1, characterized in that the

Upper table device (30) has a Oberwangenstützträgerteil, which is configured for holding, in particular for holding down the workpieces (80), and

in that the under-table device (10) has an upper blade (81), a tension spring (82) being mounted on the upper blade (81) and a transverse beam (8a) and the tension spring (82) being configured

Support return movement of the upper blade (81), and

in that preferably the upper blade (81) has an adjustable support element which is designed and arranged for pretensioning the upper blade (81).

Device according to claim 1, characterized in that the

Upper table device (30) has at least one upper beam carrier, wherein on the upper beam support at least one additional adjustable support member (52 '), preferably two additional adjustable support elements are mounted, which are arranged and configured, the

Swivel bending upper beam during the swivel bending at the

Support press frame, and

in that preferably one arranged on the upper table device

Holding device is provided, on which a segmented high upper beam (51 ') is mounted, wherein adjusting elements are provided on a rear Oberwangenstützträger (37) to fix a predetermined bending position.