CA2002431A1 - Plant or apparatus utilizing a universal straightening-bending machine - Google Patents

Plant or apparatus utilizing a universal straightening-bending machine

Info

Publication number
CA2002431A1
CA2002431A1 CA002002431A CA2002431A CA2002431A1 CA 2002431 A1 CA2002431 A1 CA 2002431A1 CA 002002431 A CA002002431 A CA 002002431A CA 2002431 A CA2002431 A CA 2002431A CA 2002431 A1 CA2002431 A1 CA 2002431A1
Authority
CA
Canada
Prior art keywords
bending
straightening
working plane
machine
stock
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
CA002002431A
Other languages
French (fr)
Inventor
Marcello Del Fabro
Giorgio Del Fabro
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.)
MEP Macchine Elettroniche Piegatrici SpA
Original Assignee
MEP Macchine Elettroniche Piegatrici SpA
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 MEP Macchine Elettroniche Piegatrici SpA filed Critical MEP Macchine Elettroniche Piegatrici SpA
Publication of CA2002431A1 publication Critical patent/CA2002431A1/en
Abandoned legal-status Critical Current

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
    • B21D11/00Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F1/00Bending wire other than coiling; Straightening wire
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F1/00Bending wire other than coiling; Straightening wire
    • B21F1/006Bending wire other than coiling; Straightening wire in 3D with means to rotate the tools about the wire axis

Abstract

ABSTRACT The invention discloses a straightening-bending device or apparatus utilizing a universal straightening-bending machine, preferably associated with wire stock feeding means. The straightening-bending machine has a pivotable working plane on a hinging horizontal axis, and advancing and straightening means with opposed rolls to straighten and advance in a longitudinal path the stock which lies on the working plane and associated with eventual guiding means. The cutting means lies on the same working plane for cutting the stock material and bending means for bending the stock material by means of central anvil means and bending nib, rotating around. The respective working plane pivoting means is conceived to orient the working plane from a first approximately horizontal position (.beta.°= 90°0) to a second positive inclined position (0°<.beta.°<90°) in which the working plane faces frontally and upwards to a third vertical position (.beta.° = 0°) in which the working plane faces frontally and to a fourth negatively inclined position (0°<-.beta.°<90°) in which the working plane faces frontally and downwards. The respective pivoting axis of the working table is displaced downwards in respect of the longitudinal stock material advancing path when the working plane is oriented in the third vertical position and the fourth negatively inclined position.

Description

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Plant or apparatus utili~in~ a univcrsal straightening - bendin~g machine 4 Thc present invcntion concerns a plant or apparatus utilizing a universal 5 straightening - bcnding machine.

7 This plant or machine finds particular if not exclusive application for 8 straightening and bending of rods or metallic wire and hence for the 9 realization of small or large stirrups, as well as for bending and shaping rods 1 0 even of notable lengthiness and even to the respective opposed extremities.

1 2 In prior art:
1 3 - is known ~hat the straightening is carried out with special machines named 1 4 straightening machines;
15 - less preferably, but not with the sole function of straightening, 1 6 stirrup/bending machines that comprise even straightening means (e.g.
1 7 AT-B-368725 in the name of EVG, Italian Patent Application in the name of 1 8 same inventor IT-83342A/85 and IT-83426A/85 corresponding to EP-1 9 86102121.0) are used. In AT-B-368725 solution the straightening action is 2 0 made on the corresponding bending plane whereas in other solutions, the 2 1 straightening action is further made on different planes. the bending plane 2 2 in which lies the corresponding cutting and bending group being disposed 2 3 more or less inclined on the vertical.

2 5 These types of machines that make possible the straightening action before 2 6 the bending action, present evident difficulty for the straightening and 2 7 shaping of rods of notable lengthiness.

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Olhcr drawbacks of all ~his calcgory of machines (known gcnerally as 2 stirrup machincs, is that they havc nol the possibili~y of producing stirrups 3 or shapcd rods of great sizc for the evident impossibili~y to rotate great bulks 4 and of notable lengthiness on a vertical or inclined plane.

s 6 Other drawbacks of these machines consist in that for the production of 7 stirrups of small size tfor example for reinforced concrete), for the reason of 8 thc presence of the bending journals and anvil means, is yielding arduous:
9 - the discharge of the finished stirrups, 10 - their gathering and respective transfer to other places.

12 Further inconvenience lies in realizing spiral stirrups utilizing in a 1 3 bending group an axial bar for the respective support, this limiting the 14 lengthiness of the spiral sliding in the bar.
Finally for the realization of stirrups or shapes of great size or very long 16 rods with bending to the respective extremity, horizontal benches are used 1 7 comprising:
18 - a sole bending group, and in such case it will be first necessary to bend an 19 extremity of the bars and then, making it to scroll towards the opposed 2 0 extremity, and finally bending the other opposed extremity, 21 - or two expatiated adjustable bending groups for shaping contemporarily 2 2 the two opposed extremities of the bar at the same time.

2 4 These benches are complex, and generally do not foresee systems of 2 5 automatic feeding and straightening, or cutting devices, being generally 2 6 destined to the sole shaping of the rods by means of manual bending (the 2 7 most ancient) or mechanized bending (the most modern).

24.~'1 US-A-3052277 (STEGMANN) discloses a bcnding machine with pivotable 2 work bending table about a horizontal axis to move the work table in any 3 desired inclination also exceeding 90 relative to the horizontal plane. ~ -4 This machine solving a lot of problems concerning the possibility to utilize thc bcsl position for working as desired, being the rotary working table so 6 realized not for solving one of the main scopes of this invention that is to 7 facilitate the discharge of the realized stirrups.
8 ~.
9 The scope of the present invention is to realize an universal apparatus able to make all the functions of the mentioned machines, 1 1 obviating to the inconvenience to utilize different machines with different :
12 characteristics for each type of stirrup to be realized.
13 A further scope of this invention is to make possible a better discharge 14 of the stirrups produced utilizing the orientability of the working table as suggested by US-A-3052277 (STEGMANN) for different scope.

17 This and others scopes are reached by the present invention as 18 claimed solving the problems exposed by a a straightening-bending plant or 19 apparatus utilizing a universal straightening-bending machine, associated 2 0 with wire stock feeding means, in which the straightening-bending 21 machine comprises in progressive order, on a pivotable working plane on 2 2 hinging horizontal axis:
2 3 - advancing and straightening means with opposed rolls to straighten and 2 4 advance in longitudinal path said stock laying on said working plane, 2 5 associated/able with eventual guiding means;
2 6 - cutting means, laying on the same working plane, for cutting said stock 27 material;
2 8 - bending means for bending said stock material by means of central anvil 2 9 means and bending nib, rotating around;

Z~ 24.~' characterized in that the rcspectivc working plane pivoting means are 2 conceived to orient said working plane:
3 - from a first approximately horizontal position, 4 - to a second positive inclined position in which the working plane faces 5 frontally and upwards;
6 - to a third vertical position in which the the working platle faces frontally, 7 - to a fourth negatively inclined position in which the the working plane 8 faces frontally and downwards, 9 and wherein:
10 - lhe respective pivoting axis of said working table is displaced downwards 1 1 in respect of the longitudinal stock material advancing path when the 12 working plane is oriented said third vertical position and said fourth 13 negatively inclined position;
14 - being this last position utilized in working bending conditions to allow free 15 falling down of the stirrups produced after bending end cutting from the 16 advancing stock material.

18 With this solution:
19 - with plan in horizontal position (B=90): is rendered possible to straighten 2 0 rods of notable lengthness and to shape pieces of great sizes constituting the 2 1 same basis support plan for the straightened and/or shaped material;
2 2 - with plan in vertical position (~=0) or positively inclined position 2 3 (0<B<90): is possible to realize stirrups of medium size in which no 2 4 discharging problems arise;
2 5 - with plan in negatively inclined position from vertical (0<-B<90): is 2 6 possible to realize stirrups particularly of small size (or intermediate size), 2 7 with the advantage of favouring their falling to earth or better on a 28 container underlying avoiding the jeopardy of bridling into respective 2 9 journals or bending anvil.

~124.~t 2 Advantageously the bcnding-straightening machine presents the bending 3 group with ablc to bend in both clock-wise or counter-clockwise direction, 4 in such a way it is possible, after and before the bending of head, make the 5 rod to advancc for the desired length, cutting it and bending it in other 6 opposed extremity.

8 In this way it is possible to utilize a sole bending group without needing 9 further bending machines.

1 1 Downwards the straightening-bending machine, a horizontal bench to 12 support in lengthiness the advanced rods of differing length (meters) 13 already bent to as first extremity can be associated, in order to allow further 14 working to the opposite extremity to be cut and bent in furlher steps.

16 The working plane in the corresponding position of the straightening 17 station is narrowed allowing the operator to accompany manually large bent 1 8 shaped forms.

2 0 A second workbench with respective bending group can be associated to the 21 first machine for bending the opposed extremity of an already worked rod is 2 2 separated steps.

2 4 These and others advantages will appear from the successive itemized 2 5 description of preferential solutions of realization with the help of the 2 6 enclosed drawings which particulars of execution are not to be considered 2 7 limitative but only by way of example.
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Figure I represents the straightening-bending machine in a side view 2 perpendicular to the line of advancement of the material.
3 Figure 2 represents a frontal view of the machine of Fig.l.
4 Figures 3 to 6 and 7 represent schematic views of the machine of Fig. I with a S working plane inclined in different positions.
6 Figures 8 and 9 represent the plant view of the maehine assoeiated with 7 working benehes.
9 Making reference to the figures it is appreciated that the straightening-bending machine comprises a support structure (A) with lateral mullions 1 1 (1) in which a working table (B) is pivotable on an horizontal axis (Y-Y), the 12 rotation being realized by means of hydraulic cylinder (2-2'). According to 13 the known technique, plane (B), comprises:
14 - a straightening group (3) placed in a tapered zone (3') that let one clearance from the opposite side (S) for an operator when he has to work in 16 horizontal condition;
17 - advancing stock material (b) guide means (4) ;
18 - a bending group (5) that includes cutting means (5') and bending means 19 (5") the last ones comprising:
- a central anvil (6) that can position itself over or under (by means of 21 retraction, displacement under the rod and reissuing from the other side) 2 2 the stock material to be bent, and 2 3 - a peripheral bending nib (7) that can rotate both clockwise and 2 4 anticlockwise and can retract itself and leaves passing from one side of the 2 5 rod to the opposite side to allow clock-wise and anti-clockwise bending 2 6 actions .

2 8 It is noticeable that the advancemen~ path axis (X-X) of the row or stock2 9 material (b) is not coincident with the axis of rotation plan (Y-Y), but in ';' '' ' ~`' ~ ' ' . : .

2(~n~

working plane horizon~ally oricnted and in working plane verlically 2 oricnted, it is highcr then thc pivoting axis X-X to allow:
3 - the work with a horizontal plan (for big and large shapes) over any 4 encumbrance means (C).
5 - the work wilh lhe negalive inclinalion (-B) for free discharging lhe 6 slirrups on a conlainer (8), avoiding lhe bridling on the bending means.
7 In this condition (figure 4) is even facilitated the realization of circular 8 spiral-shaped slirrups by means of an orlhogonal supporl axis (fig. 4') 9 further allowing easy discharging.

1 1 The working syslem for rods of notable lengthiness is shown in figure (9), 12 where afler lhe the bars (b) already shaped is cut, is further advanced for 1 3 lhe desired length (same meters) in order to work the opposile exlremity, 14 while the advanced portion is supported by the adjacent supporting plane 15 (C), allowing to be bent from the same bending group (5") by means of 16 displacement of the central anvil 6 on the rod and rotation of the bending 17 nib (7) counterclockwise.

19 Alternatively but less preferably it is even possible to discharge the rod on 2 0 an auxiliary bending bench (D) adjacent to first one where with a similar 21 bending group, opposite bending in the same bar is carried out (b').
2 2 The machine utilizes hydraulic motors for all his operative groups.
2 3 In Fig. 1 is shown thal lhe board of hydraulic command, wilh respective 2 4 hydraulic oil reservoir is installed into the base, behind the working plane 2 5 (C). This position is particularly advantageous for avoiding weights on the 2 6 movable parts of the machine, and for maintaining lhe oil always in a 2 7 straight position.

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Claims (6)

1. A straightening-bending plant or apparatus utilizing a universal straightening-bending machine, preferably associable with wire stock feeding means, in which the straightening-bending machine comprises in progressive order, on a pivotable working plane (B) an hinging horizontal axis (Y-Y):
- advancing and straightening means (3) with opposed rolls to straighten and advance in longitudinal path said stock (b) laying on said working plane (B), associated/able with eventual guiding means (4);
- cutting means (5'), laying on the same working plane (B), for cutting said stock material;
- bending means (5) for bending said stock material by means of central anvil means (6) and bending nib, (7) rotating around;
characterized in that the respective working plane pivoting means (2, 2') are conceived to orient said working plane (B):
- from a first approximately horizontal position (.beta.°=90°) - to a second positive inclined position (0°<.beta.°<90°) in which the working plane faces frontally and upwards;
- to a third vertical position (.beta.°=0°) in which the the working plane faces frontally, - to a fourth negatively inclined position (0°<-.beta.°<90°) in which the working plane faces frontally and downwards, and wherein:
- the respective pivoting axis (X-X) of said working table (B) is displaced downwards in respect of the longitudinal stock material advancing path (Y-Y) when the working plane is oriented said third vertical position and said fourth negatively inclined position.
2. A straightening-bending plant/apparatus or machine as claimed in claim 1., characterized in that said bending means in said straightening-bending machine (5") comprises:
- an anvil/keeping means (6) for being placed over and/or under the stock to be bent (b);
- a clockwise/counterclockwise rotatable bending nib means (7) displaceable from left to right or vice-versa in respect of said anvil/keeping means (6), in order to allow the stock material (b) be bent alternatively either to left or to right or vice-versa in respect of said anvil/keeping means (6).
3. A straightening-bending plant/apparatus or machine as claimed in claim 1., characterized in that said working plane rotating means (2, 2') in said straightening-bending machine (5") comprises:
- hydraulic-cylinder operating means;
- the respective sets of command means and hydraulic oil tank (C) being positioned into the structure support (A) of the machine.
4. A straightening-bending plant/ apparatus or machine as claimed in claim 1., characterized in that the working plane in the respective straightening means zone (3-3') is narrowed to realize a recess (S) for allow positioning of an operator.
5. A straightening-bending plant/apparatus as claimed in claim 1., characterized in that downwards to said straightening-bending machine is associated a bench (C) for supporting excessive length of the advanced stock.
6. A slraightening-bcnding plant/apparatus as claimcd in claim 1., characterizcd in that to said straightening-bending machine (A-B), a second working bench (D) with auxiliary bending means for bending the opposite extremity of a cut bar from said feeding means (b') is further associated .
CA002002431A 1988-11-23 1989-11-07 Plant or apparatus utilizing a universal straightening-bending machine Abandoned CA2002431A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT83532A/88 1988-11-23
IT8883532A IT1226199B (en) 1988-11-23 1988-11-23 PLANT USING A UNIVERSAL STRAIGHTENING BENDING MACHINE.

Publications (1)

Publication Number Publication Date
CA2002431A1 true CA2002431A1 (en) 1990-05-23

Family

ID=11322858

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002002431A Abandoned CA2002431A1 (en) 1988-11-23 1989-11-07 Plant or apparatus utilizing a universal straightening-bending machine

Country Status (6)

Country Link
US (1) US5009097A (en)
EP (1) EP0374465A1 (en)
JP (1) JPH02224820A (en)
CA (1) CA2002431A1 (en)
DK (1) DK562389A (en)
IT (1) IT1226199B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT393640B (en) * 1989-09-20 1991-11-25 Evg Entwicklung Verwert Ges DEVICE FOR BENDING ROD-SHAPED MATERIAL TO CONCRETE REINFORCEMENT ELEMENTS
NL9401473A (en) * 1994-09-09 1996-04-01 Holland Mechanics Bv Bending device
FR2749199A1 (en) * 1996-06-03 1997-12-05 Faure Bertrand Equipements Sa Machine for bending metal wires in a predetermined configuration
GR1002854B (en) * 1997-02-14 1998-02-06 ������� �������� ������� ��� ��������� �����������.. Method and mechanism for the production of spiral from wire or reinforced concrete rod or metallic tube of any cross sectional shape with similar or different shape of each twist.
IT1295107B1 (en) * 1997-04-29 1999-04-30 Piegatrici Macch Elettr BENDING SYSTEM PERFECTED FOR BENDING MACHINES
GR1003500B (en) * 1999-04-06 2001-01-03 ������� & ��� �� "������" Reclining machine for aligning, bending, and cutting iron bars (automatic electronic strapping maker)
EP1434660B1 (en) 2001-09-14 2007-04-18 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Bending machine for profiles, such as reinforcement round pieces or similar
ITUD20020013A1 (en) * 2002-01-24 2003-07-24 Piegatrici Macch Elettr EJECTOR DEVICE FOR BARS OR BARS
US9375773B2 (en) 2010-05-05 2016-06-28 Textron Innovations Inc. Circuit for conduit bender
CN103658452B (en) * 2013-12-12 2015-11-18 建科机械(天津)股份有限公司 Stock stop on steel-bar automatic hoop bender
US20170128997A1 (en) * 2014-03-27 2017-05-11 Libero Angelo MASSARO Overturnable bending machine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL293445A (en) *
US1272552A (en) * 1917-07-31 1918-07-16 Robert P Spencer Pipe-bending machine.
US3052277A (en) * 1958-07-17 1962-09-04 Wirth Arno H Fa Bending machine
FR1364770A (en) * 1963-05-17 1964-06-26 Automatic machine for bending steel bars and shaping pins, stirrups or frames
US3440859A (en) * 1966-10-18 1969-04-29 Xerox Corp Corner forming apparatus
IT1024224B (en) * 1974-11-15 1978-06-20 Del Fabbro Remigio MAOCHINA CONTINUOUS SUPPLY SUPPLY BRACKET WITH MATERIAL RECOVERY AND RELEVANT ME TODO OF OBERARE FOR THE QUSTRUTION OF THE SAID BRACKETS
AT368724B (en) * 1976-05-28 1982-11-10 Hufnagl & Co Rista Draht BENDING MACHINE FOR WIRE
DE2918813A1 (en) * 1979-05-10 1980-11-20 Brueninghaus Gmbh Stahlwerke Bending machine for metal bars or tubes - has horizontally movable pillars supporting respective anvils on which workpiece is bent via rollers on lever arms
AT368725B (en) * 1981-01-30 1982-11-10 Evg Entwicklung Verwert Ges COMBINED LEVELING AND BENDING MACHINE
US4485664A (en) * 1982-09-20 1984-12-04 J. A. Richards Company Device for forming and bending metal
US4561279A (en) * 1984-08-24 1985-12-31 Leonard Wears Rod bending and cutting apparatus

Also Published As

Publication number Publication date
DK562389D0 (en) 1989-11-09
EP0374465A1 (en) 1990-06-27
DK562389A (en) 1990-05-24
IT8883532A0 (en) 1988-11-23
IT1226199B (en) 1990-12-21
JPH02224820A (en) 1990-09-06
US5009097A (en) 1991-04-23

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Legal Events

Date Code Title Description
FZDE Discontinued
FZDE Discontinued

Effective date: 19930508