Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21F—WORKING OR PROCESSING OF METAL WIRE
  • B21F27/00—Making wire network, i.e. wire nets
  • B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
  • B21F27/121—Making special types or portions of network by methods or means specially adapted therefor of tubular form, e.g. as reinforcements for pipes or pillars
  • B21F27/127—Making special types or portions of network by methods or means specially adapted therefor of tubular form, e.g. as reinforcements for pipes or pillars by bending preformed mesh
• • 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
  • B21D11/00—Bending 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
  • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
  • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
  • B21D11/125—Bending wire nets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21F—WORKING OR PROCESSING OF METAL WIRE
  • B21F27/00—Making wire network, i.e. wire nets
  • B21F27/08—Making wire network, i.e. wire nets with additional connecting elements or material at crossings
  • B21F27/10—Making wire network, i.e. wire nets with additional connecting elements or material at crossings with soldered or welded crossings

Definitions

• the invention relates to a bending machine for wire mesh mats, which consist of flocks of mutually perpendicular crossing, welded together at the crossing points longitudinal and transverse wires.
• the automatically available bending machines for wire mesh mats currently available on the market due to their bending lever geometry, are not able to produce positive or negative bending angles on a wire mesh mat formed from welded longitudinal and transverse wire coulters .
• the wire mesh mat In order to bend negative bending angles, the wire mesh mat must be turned several times. For this process a lattice mat turner is necessary. Further, to make a turn clockwise or counterclockwise two main drive units are required, each of which must apply the full bending force.
• the invention aims to provide an improved machine for bending wire mesh mats, which does not require a mat turner and allows for bending the longitudinal or transverse wires of the wire mesh mat with both positive and negative bending angles.
• the invention achieves this in a bending machine with a machine base frame accommodating the bending elements, a feed device moving the wire mesh mat by the bending machine and a central drive device controlled by a program control device for all bending and feeding operations in that on a machine direction extending in the cross machine direction
• a number of bending mandrels supported at a mutual distance are mounted on a base frame supported beam-like receiving device, the number of which is at least equal to the number of bending mandrels at the same time bending wires of the wire mesh mat corresponds to the receiving device servo-regulated by means of an associated lifting relative to the wire mesh mat in the advanced wire mesh mat height adjustable and adjustable by means of an associated displacement device in aschinen- transverse direction to the bending mandrels as bending elements or as a
• the switching device is formed by a piston cylinder whose piston rod is coupled on the one hand via a link to a bending lever carrier and on the other hand via a connecting rod to the drive axle.
• each receiving devices via a sliding block with sliding guides the receiving device into engagement each receiving devices via a sliding block with sliding guides the receiving device into engagement.
• the positive and negative bending angles are made possible by reversing the direction of rotation of the bending rollers and by converting the bending mandrels with the aid of the lifting device.
• the automatic double bending machine according to the invention has a modular design and is capable of depending on the orientation of moving through the feed device wire mesh bends of the longitudinal or transverse bars, clockwise and counterclockwise up and down to perform, wherein the welded parallel to the bending direction wire can be above or below the wire to be bent. All bending forces are generated by means of a single main drive unit.
• FIG. 1 to 4 are schematic side views of a bending machine according to the invention in various stages of bending the longitudinal wires of a wire mesh mat
• Fig. 5 is a schematic view of the bending machine in the direction of the grid mesh feed
• Fig. 6 is a partial plan view to Fig. 5th
• the bending machine shown has a precision feed device, not shown, which positively and non-positively engages the wire mesh mat to be bent, for example a carriage with clamping elements, and they programmatically in the direction of the arrow P in the grid mat plane E moves through the bending machine.
• the respective work program is supplied by a program control device, also not shown.
• a central drive device is provided for all machine parts to be driven.
• Directions carries a machine-width extending beam-like receptacle 14 for a series of bending mandrels 1, the servo-controlled by means of an associated hydraulic displacement device 17 (Fig. 6) in the cross-machine direction slidably (arrow P3 in Fig. 6) and in height by means of an associated lifting device 16 'is adjustable (arrow PI in Fig. 5).
• the number of bending mandrels 1 results from the machine width and the minimum longitudinal wire pitch that is possible on the bending machine. For example, the minimum longitudinal wire pitch is 50 mm.
• a likewise beam-like, extending over the machine width receiving device 15 for one of the first row of mandrels 1 associated second row of bending mandrels 2 is mounted on the machine base frame 13, which is also servo-controlled by means of an associated hydraulic displacement device 19 (FIG. 6) in the cross machine direction displaced (arrow P4 in Fig. 6) and in height by means of an associated lifting device 16 "is adjustable (arrow PI in Fig. 5).
• a third beam-like receiving device 11 is provided on the machine base frame 13 for the bending mandrels 1, 2 associated bending rollers 3, which also servo-regulated mit- in the machine transverse direction (P6 in Fig. 6) and by means of an associated lifting device 16 within a frame guide 13 'in height is adjustable (arrow P7 in Fig. 1) by an associated hydraulic displacement device 18.
• the displacement devices 17, 18, 19 are actuated by a central drive device, not shown.
• the bending machine For actuating the bending rollers 3, the bending machine, as shown in FIG. 1, a driven by the central drive device drive shaft 9 for a provided on one side of the machine crank gear 6, which is coupled with a machine width extending over the lever mechanism, which is a bar-like carrier has, the lever 4 'with bending rollers 3 carries.
• a sliding crank mechanism 6 can also be provided symmetrically on both sides of the machine.
• a connecting rod 20 is connected on the one hand to the drive shaft 9 and on the other hand in a bearing point 10 with the piston rod of a hydraulic cylinder 12 which is mounted on the receiving device 11 and a handlebar 5, the positioning of the bending rollers 3 relative to each - Corresponding bending mandrel 1 or 2 causes.
• the operation of the bending machine for bending the longitudinal wires 21 of a wire mesh mat in a clockwise upward as shown in FIG. 1 will be explained.
• the row of bending mandrels 1 serves as a bending element about which is bent.
• the bending mandrel row 1 is servo-regulated by means of the associated lifting device 16 '(Fig. 5) in the direction of the arrow PI, depending on the diameter of the longitudinal wires 21, raised to a predetermined height position above the longitudinal wires, and the bending mandrel 1 is then by lateral displacement with Help the displacement device 17 (Fig. 6, arrow P3) positioned on the longitudinal wires 21 to be bent.
• the second row of bending mandrels 2 serves as an anvil and is raised in the direction of the arrow P2, again servo-controlled by the associated lifting device 16 "in the direction of the arrow P2, to a predetermined height position below the longitudinal wires 21 to be bent
• the bending rollers 3 are actuated, which are arranged laterally on the machine base frame 13.
• the hydraulic switching cylinder 12 for the bending lever carrier 4 is retracted so that the handlebar 5 and the connecting rod 20 assume their retracted position and the beam-like bending lever carrier 4 with triggered on this fixed bending lever 4 'and the bending rollers 3, triggered by the central drive device, not shown via the drive shaft 9 and the crank 6, an approximately circular movement of the bending rollers 3 in the clockwise direction (circle 8) around the bending mandrel 1 serving as a bending element
• the required Ie bending angle is servo-regulated by the program control device.
• the retraction of the beam-like bending lever 4 and the bending mandrel rows 1, 2 takes place in reverse order.
• the receiving device 11 of the bending lever carrier 4 with the bending rollers 3, driven by the central Antriebsvor- direction in the direction of the arrow 7 moves back to the starting position.
• the bending mandrel row 1 is displaced laterally by means of the displacement device 17 in the direction of the arrow P3 and is servo-controlled lowered by the lifting device 16 'downwards (arrow PI).
• the mandrel 2 is set by means of the associated lifting device 16 "is also servo-controlled downward till ⁇ lowers (arrow P2).
• the bending mandrel row 2 is raised to a predetermined height position above the longitudinal wires 21 by means of the receiving device 13 and the lifting device 16 "servo-controlled, depending on the longitudinal wire diameter, and the bending mandrels 2 are passed through lateral displacement (arrow P4 in Fig. 6) with the aid of the displacement device 19 is positioned above the longitudinal wires.
• the mandrel row 1 serves as an anvil and is also servo-regulated by means of the associated lifting device 16 ', depending on the longitudinal wire diameter, raised to the predetermined height position below the longitudinal wires 21, and the bending mandrels 1 are positioned below the longitudinal wires.
• the switching cylinder 12 is extended, so that the changeover of the bending lever carrier 4 caused via the handlebar 5 has the result that the bending lever 4 'and bending roller 3, triggered by the central drive device controlled by the program control device, make an approximately circular movement (circle 8'). ) runs counterclockwise about the bending mandrel 2 acting as a bending element.
• the required bending angle is servo-regulated by the program control device.
• the bending lever carrier 4 moves, driven by the drive device, back to its original position.
• the bending mandrel row 2 is displaced laterally (arrow P4) by means of the displacement device 19 and lowered downwards by means of the lifting device 16 "(arrow P2) .
• the bending mandrel row 1 likewise becomes by means of the associated lifting device 16 'servo-controlled lowered down (arrow PI).
• the bending mandrels 1, 2 are made again to the longitudinal wires, and it is performed with the actuated by the bending lever carrier 4 bending rollers 3, the next bend.
• Fig. 3 shows a bending of the longitudinal wires 21 in the counterclockwise direction down.
• the row of bending mandrels 1 serves as a bending element about which is bent.
• the bending mandrel row 1 is servo-controlled in the predetermined height position below the longitudinal wires 21 - depending on the wire diameter - raised by means of the associated lifting device 16 '(arrow PI), and the bending mandrels 1 are positioned below the longitudinal wires 21.
• the row of bending mandrels 2 serves as an anvil and is servo-controlled by means of the lifting device 16 "in the predetermined height position above the longitudinal wires 21 - depending on the wire diameter - raised, and the bending mandrels 2 positioned by lateral displacement (arrow P4) with the aid of the associated displacement device 19 above the longitudinal wires.
• the switching cylinder 12 is retracted so that the movement of the bending lever carrier 4 with the bending rollers 3 actuated by the latter, triggered by the central drive device, performs an approximately circular movement (circle 8 ”) counterclockwise about the row of bending mandrels 1.
• the bending lever carrier 4 is servo-controlled in the predetermined height position above the longitudinal wires 21 - depending on the wire diameter - raised, and the bending rollers 3 are positioned by lateral displacement (arrow P6) of the Biegehebellos 4 above the longitudinal wires 21.
• the required bending angle is servo controlled by the program control device. predetermined.
• the free movement of the bending lever 4 'and the bending mandrels 1, 2 takes place in reverse order.
• the bending lever carrier 4 moves, driven by the central drive device, back to its original position.
• the bending mandrel 2 is moved laterally (arrow P4) and lowered servo-controlled downwards (arrow P5).
• the bending mandrel 1 is also lowered servo-controlled down (arrow PI).
• the bending mandrels 1, 2 are re-engaged on the longitudinal wires 21 and with the bending of the bending carrier 4 actuated bending rollers 3 performed the next bend.
• Fig. 4 shows a bend clockwise down.
• Row of bending mandrels 2 serves as a bending element, which is bent around.
• the bending mandrel 2 is servo controlled in the predetermined height position below the longitudinal wires 21 - depending on the wire diameter - lifted, and the bending mandrels 2 are positioned below the longitudinal wires 21.
• the row of bending mandrels 1 serves as an anvil and is servo-controlled in the predetermined height position above the longitudinal wires - depending on the wire diameter - raised, and the bending mandrels 1 are positioned by lateral displacement (arrow P3) of the associated receiving device 14 above the longitudinal wires 21.
• the switching cylinder 12 is extended, so that the movement of the bending lever carrier 4 with the bending rollers 3 actuated by this, triggered by the program control device and the central drive device, performs an approximately circular movement in the clockwise direction about the bending mandrel row 2.
• the bending lever carrier 4 is servo controlled in the predetermined height position above the longitudinal wires 21 - depending on the wire diameter - raised, and the bending rollers 3 are positioned by lateral displacement (arrow P6) of the associated receiving device 11 above the longitudinal wires 21.
• the required bending angle is servo-regulated by the program control device.
• the free movement of the bending lever 4 'and the bending mandrels 1, 2 takes place in reverse order.
• the bending lever carrier 4 moves, driven by the central drive device, back to its original position.
• the bending mandrel row 1 is shifted laterally (arrow P3) and lowered servo-controlled downwards (arrow PI).
• the bending mandrel 2 is also lowered servo-controlled down (arrow P2).
• the bending mandrels 1, 2 are made again to the longitudinal wires, and it is done and with the actuated by the bending lever carrier 4 bending rollers 3 the next bend.
• the transverse wires are located between the first and subsequent bends - the bending mandrel rows 1, 2 and the bending lever carrier 4 be driven gear position in the initial and new a ⁇ threaded for the far taking place bend for each bending cycle.
• a wire mesh mat is bent to form a closed system (basket).
• the wires which has been bent, to move laterally to avoid collision with those already located there.
• the precision Feeding device On the precision feed device, a comb strip is mounted, which is mounted on a support, for example by a servo-controlled hydraulic cylinder, laterally displaceable.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Wire Processing (AREA)

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Cited By (4)

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Citations (3)

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• 2012
  • 2012-07-25 AT ATA830/2012A patent/AT512400B1/de not_active IP Right Cessation
  • 2012-12-04 EP EP12812812.1A patent/EP2877301A1/fr not_active Withdrawn
  • 2012-12-04 US US14/417,339 patent/US20150209856A1/en not_active Abandoned
  • 2012-12-04 SG SG11201500562QA patent/SG11201500562QA/en unknown
  • 2012-12-04 WO PCT/AT2012/000305 patent/WO2014015349A1/fr not_active Ceased
• 2015
  • 2015-01-23 ZA ZA2015/00544A patent/ZA201500544B/en unknown

Patent Citations (3)

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