US20200324331A1 - Folding pliers - Google Patents

Folding pliers Download PDF

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Publication number
US20200324331A1
US20200324331A1 US16/759,919 US201816759919A US2020324331A1 US 20200324331 A1 US20200324331 A1 US 20200324331A1 US 201816759919 A US201816759919 A US 201816759919A US 2020324331 A1 US2020324331 A1 US 2020324331A1
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US
United States
Prior art keywords
handle piece
clamping area
rotation axis
clamping
piece
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US16/759,919
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English (en)
Inventor
Andreas Tscheinig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tscheina GmbH
Original Assignee
Tscheina GmbH
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
Application filed by Tscheina GmbH filed Critical Tscheina GmbH
Assigned to tscheina GmbH reassignment tscheina GmbH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TSCHEINIG, Andreas
Publication of US20200324331A1 publication Critical patent/US20200324331A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/025—Hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/042—With a rotational movement of the bending blade
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/16—Folding; Pleating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D15/00—Apparatus or tools for roof working
    • E04D15/04—Apparatus or tools for roof working for roof coverings comprising slabs, sheets or flexible material

Definitions

  • the invention relates to folding pliers for bending sheet metal, comprising a first clamping area and a second clamping area, wherein the clamping areas are connected such that they can be rotated about a first rotation axis, and also a first handle piece and a second handle piece connected to the first handle piece in a pivotable manner, wherein the first handle piece is connected to the first clamping area.
  • the object of the invention is to specify a tool of the type named at the outset which is light and easy to handle and can be used portably.
  • a compact and lightweight device for bending sheet metal in a simple manner can be obtained if folding pliers are embodied accordingly and, in a movement of the handle pieces relative to one another, a piece of sheet metal is first clamped between the clamping areas and, in a further movement of the handle pieces relative to one another, the sheet metal is subsequently bent about the second rotation axis due to a movement of the clamping areas together with the sheet metal relative to the second handle piece.
  • Folding pliers of this type can be embodied to be lightweight and compact so that they can also be used portably for facade work, for example.
  • the sheet metal is clamped as result of a movement of the clamping areas relative to one another about the first rotation axis and the sheet metal bent as a result of a movement of the clamping areas together with the clamped section of the sheet metal about the second rotation axis with a continuous motion of the handle pieces, in order to ensure convenient ease-of-operation.
  • the first handle piece is simply moved in the opposite direction of the movement for the clamping and folding of the sheet metal, so that folded sheet metal can be released from the folding pliers.
  • first rotation axis and the second rotation axis are approximately parallel.
  • a distance between the rotation axes is typically less than 20 cm, in particular less than 10 cm, and corresponds to a length of the desired fold or a length of the section of sheet metal to be bent.
  • the clamping areas typically extend from the first rotation axis to the second rotation axis so that a piece of sheet metal is fully clampable preferably in a region between the first rotation axis and the second rotation axis, in order to evenly load the sheet metal and thus obtain a clean edge.
  • the sheet metal can essentially be clamped by the clamping areas over the entire area between the first rotation axis and the second rotation axis.
  • a clamping is continuously possible in a region between the rotation axes.
  • a clean bending of the clamped sheet metal, or the sheet metal fixed in place between the clamping areas by a force-fit is achieved with smooth bent edges.
  • a constructionally simple, and at the same time robust, design is achieved if a rotatable connection between the clamping areas and/or between the second clamping area and the second handle piece is formed by a hinge, in particular a piano hinge. A uniform force transmission over a length of the fold is thus also ensured.
  • the first handle piece is connected to the first clamping area via a plate-shaped intermediate element, wherein the first handle piece is preferably connected to the plate-shaped intermediate element via at least two connection positions which are arranged in particular at an end. This ensures a uniform application of force over a length of the fold, so that a particularly smooth and high-quality bent edge can be obtained.
  • the second handle piece is connected to the second clamping area via a plate-shaped intermediate element, wherein the second handle piece is preferably connected to the plate-shaped intermediate element via at least two connection positions which are arranged in particular at an end.
  • the first clamping area is connected to the first handle piece in a rigid manner, preferably at an angle of less than 100°, in particular less than 50°, preferably 15° to 35°.
  • the handle pieces can then be arranged such that they bear against one another in a transport position, from which transport position a clamping of a piece of sheet metal and a folding are directly possible.
  • the first clamping area and the first handle piece are connected in the region of the first rotation axis.
  • the first clamping area is connected to the first handle piece in a rigid manner, wherein in a transport position, in which the handle pieces bear against one another, the clamping areas are arranged at an opening angle of 10° to 90°, in particular 15° to 35°, preferably approximately 20°, to one another and are open in order to accommodate a piece of sheet metal.
  • the folding pliers can then be used for the folding or of sheet metal directly from the transport position.
  • a torque that is necessary to move the second handle piece about the second rotation axis relative to the second clamping area is greater than a torque that is necessary to move the first handle piece about the first rotation axis relative to the second clamping area, so that a movement of the first handle piece out of the transport position first initiates a movement of the first handle piece relative to the second clamping area.
  • this can be implemented in the most varying ways, in particular through joints that move with differing degrees of ease, which joints form the rotation axes.
  • a robust design of rotation axes which move with differing degrees of ease can easily be achieved if at least one spring is provided on a joint that forms the second rotation axis, in particular on a piano hinge forming the second rotation axis, with which spring a friction force acting between parts of the joint that can be moved relative to one another can be applied to the joint, in order to define a torque necessary for initiating a movement of the joint, wherein a spring force can be adjusted in particular by a set screw.
  • spring-loaded pressure pieces acting on parts of the second rotation axis that are moved relative to one another can be provided so that a movement of the hinge or a movement of the second clamping area about the second rotation axis relative to the second handle piece is only possible when overcoming a frictional torque produced by the spring or a friction force acting on the parts of the second rotation axis that can be moved relative to one another.
  • more than one spring is provided, in order to apply a uniform friction force over a length of the hinge.
  • the spring thus acts, for example, directly on a first part of the joint forming the second rotation axis, which first part can be moved relative to a second part of said joint, and presses the first part against the second part with the spring force, so that in order to move the first part relative to the second part it is necessary to overcome a friction force that is defined by the spring force and a friction coefficient.
  • FIGS. 1 through 3 Folding pliers according to the invention in different operating states
  • FIG. 4 Folding pliers according to the invention together with a piece of sheet metal
  • FIG. 5 A detailed view of folding pliers according to the invention from FIG. 4 ;
  • FIG. 6 Folding pliers according to the invention together with a piece of sheet metal
  • FIG. 7 A further set of folding pliers according to the invention together with a piece of sheet metal.
  • FIGS. 1 through 3 show folding pliers 1 according to the invention in different operating states.
  • the folding pliers 1 comprise a first handle piece 6 and a second handle piece 7 , wherein the first handle piece 6 is connected to a first clamping area 2 in a rigid manner.
  • the first handle piece 6 and the first clamping area 2 are, as is illustrated, connected to a second clamping area 3 such that they can be rotated about a first rotation axis 4 , so that a section of a piece of sheet metal 8 or the like can be clamped between the clamping areas 2 , 3 .
  • the second clamping area 3 is rotatably connected to a second handle piece 7 via a second rotation axis 5 that is parallel to the first rotation axis 4 , so that a piece of sheet metal 8 clamped between the clamping areas 2 , 3 can be bent or folded as the result of a rotational movement of the clamping areas 2 , 3 , which are connected via the clamped piece of sheet metal, about the second rotation axis 5 .
  • Both the movement of the first clamping area 2 about the first rotation axis 4 relative to the second clamping area 3 and also the bending movement of the two clamping areas 2 , 3 about the second rotation axis 5 can be initiated by a movement of the first handle piece 6 relative to the second handle piece 7 , so that a clamping and bending of sheet metal 8 can take place with a continuous motion of the first handle piece 6 relative to the second handle piece 7 .
  • the folding pliers 1 are illustrated in a transport position in which the folding pliers 1 have a minimal space requirement and the handle pieces 6 , 7 essentially bear against one another.
  • a clamping and folding of a piece of sheet metal 8 is directly possible from this transport position.
  • a piece of sheet metal 8 that is to be folded is positioned between the clamping areas 2 , 3 of the folding pliers 1 , which areas are opened at an opening angle ⁇ of approximately 10° to 35° in this transport position.
  • a first handle piece 6 of the folding pliers 1 is moved relative to a second handle piece 7 of the folding pliers 1 clockwise from the position illustrated in FIG. 1 in a direction of movement 13 .
  • first clamping area 2 Since the first clamping area 2 is connected to the first handle piece 6 in a rigid manner, a rotational movement of the first handle piece 6 also causes a rotational movement of the first clamping area 2 relative to the second clamping area 3 , whereby a piece of sheet metal 8 positioned between the clamping areas 2 , 3 is clamped by the clamping areas 2 , 3 when the first handle piece 6 is moved clockwise relative to the second handle piece 7 .
  • a position of this type, in which the clamping areas 2 , 3 are closed, that is, in which an opening angle ⁇ between the clamping areas 2 , 3 is 0°, is illustrated in FIG. 2 .
  • FIG. 3 A bending position in which the clamping areas 2 , 3 are closed, and are accordingly pivoted relative to the second handle piece 7 is illustrated in FIG. 3 .
  • the first clamping area 2 is connected to an intermediate element 10 at an angle ⁇ of approximately 50°, via which intermediate element 10 the first clamping area 2 is connected to the first handle piece 6 in a rigid manner.
  • FIGS. 4 through 6 show folding pliers 1 according to the invention in an operating position as illustrated in FIG. 3 , but together with a piece of sheet metal 8 clamped between the clamping areas 2 , 3 .
  • the sheet metal 8 is bent in the region of the second rotation axis 5 . This has occurred as a result of the movement sequence described above.
  • the handle pieces 6 , 7 are connected to the clamping areas 2 , 3 via plate-shaped intermediate elements 10 , wherein the handle pieces 6 , 7 are arranged in end regions of the plate-shaped intermediate elements 10 , or are connected to the handle pieces 6 , 7 at connection positions 11 arranged at an end, in order to ensure a uniform force transmission and application to the sheet metal 8 .
  • first rotation axis 4 and the second rotation axis 5 are in this case constructionally formed by piano hinges 9 , in order to transmit forces in a particularly uniform manner.
  • a length of the plate-like intermediate elements 10 and of the rotation axes 4 , 5 is selected in accordance with a piece of sheet metal 8 that is to be folded or bent, and is individually adaptable if necessary.
  • a length of the handle pieces 6 , 7 and a distance of the same from the rotation axes 4 , 5 can be adapted to a specific application case, so that a simple actuation of the folding pliers 1 and a simple folding of sheet metal 8 are respectively possible through corresponding lever lengths.
  • FIG. 7 shows a further exemplary embodiment of folding pliers 1 according to the invention together with a piece of sheet metal 8 , wherein the folding pliers 1 are embodied essentially analogously to the folding pliers 1 illustrated in FIG. 6 , but additionally comprise springs in the region of the second rotation axis 5 , which springs are attached by set screws 12 .
  • a friction force acting between parts of the piano hinge 9 forming the second rotation axis 5 which parts can be moved relative to one another, is thereby produced via the springs, so that a frictional torque produced by these springs must be overcome before the second clamping area 3 can be moved relative to the second handle piece 7 about the second rotation axis 5 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Pivots And Pivotal Connections (AREA)
US16/759,919 2017-10-29 2018-08-01 Folding pliers Abandoned US20200324331A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT601182017 2017-10-29
ATA60118/2017 2017-10-29
PCT/AT2018/060173 WO2019079833A1 (de) 2017-10-29 2018-08-01 Falzzange

Publications (1)

Publication Number Publication Date
US20200324331A1 true US20200324331A1 (en) 2020-10-15

Family

ID=63165109

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/759,919 Abandoned US20200324331A1 (en) 2017-10-29 2018-08-01 Folding pliers

Country Status (11)

Country Link
US (1) US20200324331A1 (ko)
EP (1) EP3700691B1 (ko)
JP (1) JP7070948B2 (ko)
KR (1) KR20200078596A (ko)
CN (1) CN111601669A (ko)
AU (1) AU2018354710B2 (ko)
BR (1) BR112020008470A2 (ko)
CA (1) CA3080635A1 (ko)
IL (1) IL274339A (ko)
RU (1) RU2756054C1 (ko)
WO (1) WO2019079833A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11111675B1 (en) * 2018-12-22 2021-09-07 David Smith Flashing tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12287116B2 (en) * 2021-04-30 2025-04-29 Johnson Controls Light Commercial Ip Gmbh Housing for a heating, ventilation, and/or air conditioning (HVAC) unit
RU209579U1 (ru) * 2021-08-06 2022-03-17 Игорь Сергеевич Виноградов Устройство для образования двойного стоячего фальцевого соединения

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU20786A1 (ru) * 1930-04-25 1931-05-31 И.Я. Алавердов Приспособление дл загибани кровельных листов на карнизах товарных вагонов
US2131821A (en) * 1936-12-09 1938-10-04 Carl R Schlicht Sheet metal seaming tool
DE6937564U (de) * 1969-09-25 1970-05-14 Ramser Willy Falzzange.
JPS5366855A (en) * 1976-11-26 1978-06-14 Yoshimitsu Seisakushiyo Kk Speedy folding machine and steel plate bending device
JPS54146737U (ko) * 1978-04-03 1979-10-12
JPS59165719U (ja) * 1983-04-25 1984-11-07 日本軽金属株式会社 板材端部の折り曲げ装置
DE3824451A1 (de) * 1988-07-19 1990-01-25 Gustav Weissenfeld Nachf Falzzange mit verstellbaren backen zum falzen von hand
JPH02175024A (ja) * 1988-12-27 1990-07-06 Aoi Koki Satsushiyu Kk 板材の折り曲げ装置
US5065608A (en) * 1990-08-20 1991-11-19 Skelton Stuart P Hand-operated batten seamer tool
US5222388A (en) * 1991-03-19 1993-06-29 University Of California Patent, Trademark & Copyright Office Nitrogen dioxide detection
JP3168640B2 (ja) * 1991-04-17 2001-05-21 ダイキン工業株式会社 プレスブレーキシステムにおけるワーク取扱装置
CA2082759A1 (en) * 1991-11-26 1993-05-27 Arthur B. Chubb Heavy duty sheet bending brake
US5222386A (en) * 1992-03-05 1993-06-29 Jones Jr Robert L Hand brake
JPH06154867A (ja) * 1992-11-13 1994-06-03 Hayami Yoshioka 板金のハゼ起し具
RU2212967C1 (ru) * 2002-04-05 2003-09-27 Кульбацкий Евгений Борисович Ручное гибочное устройство
RU45946U1 (ru) * 2005-02-07 2005-06-10 Бухарев Николай Александрович Ручной листогибочный станок
US8028560B2 (en) * 2008-04-14 2011-10-04 Custom Spec Engineering, Inc. Handheld brake
UA42667U (en) * 2009-03-24 2009-07-10 Александр Петрович Данилов Sheet bending machine
CN203356277U (zh) * 2013-07-17 2013-12-25 五冶集团上海有限公司 钢梯花纹踏步板的折弯装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11111675B1 (en) * 2018-12-22 2021-09-07 David Smith Flashing tool

Also Published As

Publication number Publication date
AU2018354710B2 (en) 2024-05-02
WO2019079833A1 (de) 2019-05-02
RU2756054C1 (ru) 2021-09-24
JP2021501057A (ja) 2021-01-14
CN111601669A (zh) 2020-08-28
EP3700691C0 (de) 2024-12-04
BR112020008470A2 (pt) 2020-10-20
AU2018354710A1 (en) 2020-06-11
EP3700691A1 (de) 2020-09-02
EP3700691B1 (de) 2024-12-04
JP7070948B2 (ja) 2022-05-18
KR20200078596A (ko) 2020-07-01
IL274339A (en) 2020-06-30
CA3080635A1 (en) 2019-05-02

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