WO2013149984A1 - Press brake with an oil deflection compensating mechanism - Google Patents

Press brake with an oil deflection compensating mechanism

Info

Publication number
WO2013149984A1
WO2013149984A1 PCT/EP2013/056861 EP2013056861W WO2013149984A1 WO 2013149984 A1 WO2013149984 A1 WO 2013149984A1 EP 2013056861 W EP2013056861 W EP 2013056861W WO 2013149984 A1 WO2013149984 A1 WO 2013149984A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
bottom
plate
press
pool
brake
Prior art date
Application number
PCT/EP2013/056861
Other languages
French (fr)
Inventor
Ahmet Civan
Original Assignee
Durmazlar Makina Sanayi Ve Ticaret Anonim Sirketi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0272Deflection compensating means

Abstract

The subject matter invention is a press brake (10) having wedges (14, 15) positioned between a bottom plate (12) and a bottom plate top (13) and forming ridging on said bottom plate by means of the drive applied on at least one of the wedges (14, 15), in order to eliminate the deflection formed on the bottom plate (12) and thus on the sheet plate during bending of the sheet plates; characterized by comprising a pool (17) wherein sufficient amount of oil is provided and wherein said wedges (14, 15) are positioned.

Description

SPECIFICATION

PRESS BRAKE WITH AN OIL DEFLECTION COMPENSATING MECHANISM TECHNICAL FIELD

The present invention relates to a press brake having an oiled deflection compensating mechanism. PRIOR ART

In production plants, press brakes are utilized for the bending process applied onto the sheet plate. One of the frequently faced problems during the bending process is that the sheet plate, placed between the lower and upper molds of the press brake, is bending and thus, the upper mold does not seat completely inside the lower mold. Because of said problem, there are problems like deformation in the sheet plate. In order to provide a solution to this problem, different systems are adapted to said press brakes, and the surfaces where the sheet plate is fixed are deflected and thus, bending is provided as a result of the full contact of the molds to sheet plate surfaces.

Utilizing the system used in present press brakes and using the systems disclosed in the utility model application 2007/07279, in order to provide a solution to said problem, deflection is realized to the surfaces, whereto the sheet plate is fixed, by means of the drive obtained from a hydraulic drive mechanism. All of said systems are adapted to the external sides of said press brakes. However, it is seen during the usage that in systems comprising three or more machines, since the present deflection compensating systems are adapted to the external side of each machine, another problem occurs. The deflection compensating system cannot be adapted to the machine existing in between. Particularly since deformation is observed in the parts which correspond to the intermediate regions of the sheet plate, and since deflection compensation process cannot be realized in the machine existing in the middle, inferior products are continued to be produced during production.

In order to provide a solution to the abovementioned problems, a press brake is improved having an embedded hydraulic deflection compensating mechanism with a hydraulic drive mechanism described in the patent application 201 1/12617. The press brake described in 201 1/12617 relates to a press brake having wedges forming ridging by being positioned between the bottom plate and bottom plate top in order to eliminate the deflection formed on the bottom plate and thus on the sheet plate during bending in systems where three or more press brakes are positioned side by side. Said press brake is characterized by comprising a hydraulic drive mechanism providing the required drive for providing ridging said wedges; and a drive housing where said drive mechanism is positioned in an embedded manner. As in the other applications, in said press brake, there is a friction between the wedges and thus, the press brake is subject to maintenance and oiled again at certain periods for decreasing said friction. Because of said process, the system stops and maintenance cost occurs.

As a result, because of the abovementioned problems, an improvement is required in the related technical field.

BRIEF DESCRIPTION OF THE INVENTION

The present invention relates to a press brake having an oiled deflection compensating mechanism, in order to eliminate the abovementioned problems and to bring new advantages to the related technical field.

The main object of the present invention is to provide a press brake having an oiled deflection compensating mechanism realizing oiling continuously and decreasing the maintenance costs.

In order to realize all of the abovementioned objects and the objects which are to be obtained from the detailed description below, the present invention is a press brake having wedges positioned between a bottom plate and a bottom plate top and forming ridging on said bottom plate by means of the drive applied on at least one of the wedges, in order to eliminate the deflection formed on the bottom plate and thus on the sheet plate during bending of the sheet plates. Accordingly, said press brake is characterized by comprising a pool wherein sufficient amount of oil is provided and wherein said wedges are positioned. In a preferred embodiment of the subject matter invention, said pool comprises a pool channel provided by realizing cut-out on the bottom plate from end to end; and a first lid and a second lid covering the two ends of said pool channel so as to prevent oil output.

In another preferred embodiment of the subject matter invention, said first lid, provided on one side of the pool channel, comprises at least one sealing member, preventing oil output from the pool, on the surface thereof connected to the bottom plate; and at least one channel said sealing member is positioned thereon. In another preferred embodiment of the subject matter invention, the first lid comprises at least one arm hole through which the cylinder arm is passing which drives at least one of the wedges. In another preferred embodiment of the subject matter invention, the first lid comprises at least one assembly hole for the assembly of the bottom plate.

In another preferred embodiment of the subject matter invention, on the surface of said second lid connected to the bottom plate, there is at least one sealing member preventing oil output from the pool; and at least one channel said sealing member is positioned thereto.

In another preferred embodiment of the subject matter invention, the second lid comprises at least one assembly hole for the assembly of the bottom plate. In another preferred embodiment of the subject matter invention, at least one of the lids comprises at least one oil hole providing oil input to the pool and oil output from the pool.

In another preferred embodiment of the subject matter invention, the pool is provided such that pluralities of bottom wedges and upper wedges are positioned on the bottom plate.

In another preferred embodiment of the subject matter invention, there is at least one wall separating the wedge pairs from each other when there are pluralities of bottom wedges and upper wedges. In another preferred embodiment of the subject matter invention, the pool is provided by realizing a cut-out in a closed pouch form so as not to permit oil output on the bottom plate.

In another preferred embodiment of the subject matter invention, in case there are two or more bottom wedges and upper wedges placed in a sequence, there is at least one connection arm in the connection of the cylinder arm and the wedges.

BRIEF DESCRIPTION OF THE FIGURES

In Figure 1 , a general view of the press brake is given.

In Figure 2, a general view of the bottom plate and a detailed view of the wedges are given. In Figure 3, a general view of the first lid and of the drive mechanism is given.

In Figure 4, a general view of the second lid is given. REFERENCE NUMBERS

10 Press Brake

1 1 Upper Plate

12 Bottom Plate

13 Bottom Plate Top

14 Bottom Wedge

141 Upper Surface

15 Upper Wedge

151 Bottom Surface

16 Mold

17 Pool

171 Pool Channel

172 Wall

20 First Lid

21 Channel

22 Sealing member

23 Assembly Hole

24 Oil Hole

25 Arm hole

30 Second Lid

31 Channel

32 Sealing member

33 Assembly Hole

40 Drive Mechanism

41 Hydraulic Cylinder

41 1 Cylinder arm

412 Connection arm

42 Potentiometer

THE DETAILED DESCRIPTION OF THE INVENTION

In this detailed description, the subject matter press brake (10) having oiled deflection compensating mechanism is explained with references to examples without forming any restrictive effect in order to make the subject more understandable. Said press brake (10) is a bench utilized for bending sheet materials and has a deflection compensating mechanism for eliminating the deflection formed on the bottom plate and thus on the sheet plate during bending of the sheet plates. As can be seen in Figure 1 , the press brake (10) comprises a bottom plate (12); an upper plate (1 1 ); at least one bottom wedge (14) provided on said bottom plate (12); and at least one upper wedge (15) forming a ridge on the bottom plate (12) provided thereon by moving on said bottom wedge (14) as a result of the movement applied by a drive mechanism (40). As can be seen in Figure 2, the upper surface (141 ) of the bottom wedge (14) and correspondingly the bottom surface (151 ) of the upper wedge (15) are provided in a saw tooth like form. By means of said toothed structure, the upper wedge (15) rises on the bottom wedge (14) as a result of the movement received from said drive mechanism (40) and forms a ridge on the bottom plate (13). The form change, formed on the bottom plate (13), is also transferred to the mold (16) provided thereon. By means of the potentiometer positioned in connection to the hydraulic cylinder (41 ) provided on the drive mechanism (40), the amount of ridging, occurring as a result of the movement of the upper wedge (15), can be controlled. In the system described, the bottom wedge (14) and the upper wedge (15) are placed into at least one pool (17) provided on the bottom plate (12) for performing oiling between the bottom surface (151 ) and the upper surface (141 ). Said pool (17) comprises a pool channel (171 ) provided on the bottom plate (12); and a first lid (20) and a second lid (30) provided at both ends of the pool channel (171 ) preventing oil output from said pool channel (171 ). On said first lid's (20) face which is to be connected to the bottom plate (12), where the first lid (20) is provided on the drive mechanism (40) side, there is a channel (21 ) and there is a sealing member (22) inside said channel (21 ). Moreover, on the first lid (20), there is an arm hole (25) through which a cylinder arm of said hydraulic cylinder (41 ) will pass; at least one assembly hole (23) for the assembly of the first lid (20) to the bottom plate (12); and at least one oil hole (24) through which oil is added into or removed from the system. On said second lid (30) positioned on the other side of the pool (17), there is a channel (31 ) on the face to be connected to the bottom plate (12); and a sealing member (32) inside said channel (31 ); and at least one assembly hole (33) for the assembly of the second lid (30) to the bottom plate (12).

In said press brake bench, in the pool covered by the first lid and the second lid, during the movement described by filling oil to the pool, a continuous oil input is realized between the bottom surface and the upper surface. In an alternative embodiment of the invention, the lids (20, 30) may be fixed to the bottom plate (12) instead of the sealing member (32) for preventing oil leakage. In an alternative embodiment of the present invention, an indicator may be added to at least one of the lids for controlling the oil level.

In an alternative embodiment of the invention, a pouch can be provided on the bottom plate so as not to permit oil leakage from the pool. Even if lid usage is not required in this method, this method is not preferred since it is a more difficult method in terms of production technique.

The protection scope of the present invention is set forth in the annexed Claims and cannot be restricted to the illustrative disclosures given above, under the detailed description. It is because a person skilled in the relevant art can obviously produce similar embodiments under the light of the foregoing disclosures, without departing from the main principles of the present invention.

Claims

1 . A press brake (10) having wedges (14, 15) positioned between a bottom plate (12) and a bottom plate top (13) and forming ridging on said bottom plate by means of the drive applied on at least one of the wedges (14, 15), in order to eliminate the deflection formed on the bottom plate (12) and thus on the sheet plate during bending of the sheet plates; characterized by comprising a pool (17) wherein sufficient amount of oil is provided and wherein said wedges (14, 15) are positioned.
2. A press brake (10) according to Claim 1 , characterized in that said pool (17) comprises a pool channel (171 ) provided by realizing cut-out on the bottom plate (12) from end to end; and a first lid (20) and a second lid (30) covering the two ends of said pool channel (171 ) so as to prevent oil output.
3. A press brake (10) according to Claim 2, characterized in that said first lid (20), provided on one side of the pool channel (171 ), comprises at least one sealing member (22), preventing oil output from the pool (17), on the surface thereof connected to the bottom plate (12); and at least one channel (21 ) said sealing member (22) is positioned thereon.
4. A press brake (10) according to Claim 2, characterized in that the first lid (20) comprises at least one arm hole (25) through which the cylinder arm (41 1 ) is passing which drives at least one of the wedges (14, 15).
5. A press brake (10) according to Claim 2, characterized in that the first lid (20) comprises at least one assembly hole (23) for the assembly of the bottom plate (12).
6. A press brake (10) according to Claim 2, characterized in that on the surface of said second lid (30) connected to the bottom plate (12), there is at least one sealing member (32) preventing oil output from the pool (17); and at least one channel (31 ) said sealing member (32) is positioned thereto.
7. A press brake (10) according to Claim 2, characterized in that the second lid (30) comprises at least one assembly hole (33) for the assembly of the bottom plate (12).
8. A press brake (10) according to Claim 2, characterized in that at least one of the lids (20, 30) comprises at least one oil hole (24) providing oil input to the pool (17) and oil output from the pool (17).
9. A press brake (10) according to Claim 1 , characterized in that the pool (17) is provided such that pluralities of bottom wedges (14) and upper wedges (15) are positioned on the bottom plate (12).
10. A press brake (10) according to Claim 1 , characterized by comprising at least one wall (172) separating the wedge pairs (14, 15) from each other when there are pluralities of bottom wedges (14) and upper wedges (15).
1 1. A press brake (10) according to Claim 1 , characterized in that the pool (17) is provided by realizing a cut-out in a closed pouch form so as not to permit oil output on the bottom plate (12).
12. A press brake (10) according to Claim 1 , characterized in that in case there are two or more bottom wedges (14) and upper wedges (15) placed in a sequence, there is at least one connection arm (412) in the connection of the cylinder arm (41 1 ) and the wedges (14, 15).
PCT/EP2013/056861 2012-04-03 2013-04-02 Press brake with an oil deflection compensating mechanism WO2013149984A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TR201203770 2012-04-03
TRTR2012/03770 2012-04-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20130718134 EP2834023B1 (en) 2012-04-03 2013-04-02 Press brake with an oil deflection compensating mechanism

Publications (1)

Publication Number Publication Date
WO2013149984A1 true true WO2013149984A1 (en) 2013-10-10

Family

ID=47679797

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/056861 WO2013149984A1 (en) 2012-04-03 2013-04-02 Press brake with an oil deflection compensating mechanism

Country Status (2)

Country Link
EP (1) EP2834023B1 (en)
WO (1) WO2013149984A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031087A1 (en) * 1979-12-22 1981-07-01 Haemmerle Ag Arrangement for height adjustment of the matrix bottom of bending tools for bending sheet metals
DE10245777A1 (en) * 2002-09-26 2004-04-08 Reinhardt Maschinenbau Gmbh A bending machine for metal sheets has an interchangeable bending tool mounted on a number of wedge blocks by which fine adjustment may be made
US20040237623A1 (en) * 2003-05-29 2004-12-02 Russell Robert L. Compensating die holder
DE102007033199B3 (en) * 2007-07-17 2008-07-03 Eht Werkzeugmaschinen Gmbh Bending machine e.g. press brake, parts deflection compensating method for embossing e.g. pusher, involves exerting force before displacement, balancing or raising wedge, and accomplishing relative displacement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031087A1 (en) * 1979-12-22 1981-07-01 Haemmerle Ag Arrangement for height adjustment of the matrix bottom of bending tools for bending sheet metals
DE10245777A1 (en) * 2002-09-26 2004-04-08 Reinhardt Maschinenbau Gmbh A bending machine for metal sheets has an interchangeable bending tool mounted on a number of wedge blocks by which fine adjustment may be made
US20040237623A1 (en) * 2003-05-29 2004-12-02 Russell Robert L. Compensating die holder
DE102007033199B3 (en) * 2007-07-17 2008-07-03 Eht Werkzeugmaschinen Gmbh Bending machine e.g. press brake, parts deflection compensating method for embossing e.g. pusher, involves exerting force before displacement, balancing or raising wedge, and accomplishing relative displacement

Also Published As

Publication number Publication date Type
EP2834023B1 (en) 2018-05-30 grant
EP2834023A1 (en) 2015-02-11 application

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