l’usinage du fer à béton armé. . Travail du fer en bobines . Stirrup bender from bar • Staffatrice da barra • Estribadora para hierro en barras • Cadreuse. l’usinage du fer à béton armé. Aujourd’hui une . Stirrup bender from bar • Staffatrice da barra • Estribadora para hierro en barras • Cadreuse automatique pour. Title, Cadreuse fer à béton: Précision mécanique / Nabil Ben Marzouk, Said Ben Harzallah ; encadré par Riadh Ben Hamouda. Published, [s.l]: [S.N],

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Machine de cadre & étrier ( cadreuse automatique )

It is seen that in both embodiments, the reinforcing rod 4 can be cut in the very near the point 6 point that is one from which concrete 4 to the round starts to be folded on itself. Sur ce dessin, On this drawing. The trainer 10 then advances the concrete bar 4 of a length corresponding to one side of the frame cadrreuse the folding roller 3 performs the folding of the reinforcing rod 4 and so on until the formation of the different sides of the beeton.

We know that the realization of reinforced concrete structures require reinforcement shape and varied dimensions that are most often constituted by longitudinal elements bent hairpin at their ends and interconnected by wire also made frameworks folded steel.

The shear stress between the two blades 7 and 8 is constructed in betoj known manner, for example by means of a hydraulic or pneumatic cylinder. The frames are made using another machine called clamping machine which comprises at least one bending head fed by a trainer. There is shown in Figure 2 a second embodiment of the folder-sectionneuse according to the invention which corresponds to bending over a mandrel 1 of smaller diameter.

As a result, without making any movement back and forth on the concrete bar 4, we can choose a short length as desired for the end of the reinforcing rod which constitutes the pin beyond the last fold.

The present invention relates to a folder-sectionneuse to achieve particular round frames concrete and universal trainer-forming machine using this folder-sectionneuse to achieve concrete round frames and the use of the latter for the manufacture of armatures.

With machines of this type known to date, the position of the cutter which severs the reinforcing rod before the bending head requires to perform the concrete bar moving back and forth for limiting to a length normal the free end of the concrete reinforcing rod which was used to the realization of a framework.

Is schematically shown in Figure 1 a first embodiment of a folder-sectionneuse according to the invention. The present invention also aims to provide a single machine which, by the combination of its elements, allows to achieve both the longitudinal elements and the reinforcement frames that meet them.

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In this way, thanks to the actuator 22, it is possible to tilt the straightening machine 10 about its hinge axis 21 between two positions, namely a high position in which the reinforcing rod 4 comes out of the straightening machine 10 is in the axis of the chute 14 and a low position in which the reinforcing rod 4 comes out of the straightening machine 10 is located in front of the bending head 17 as shown by 4 in Figure 5.

According to the invention, the straightener 10 is mounted on a support 20 hinged in 21 on the frame of the machine while an actuator 22 is hinged at 23 on the machine frame and at 24 on the support 20 of the straightening With a device of known type, for example by tilting the chute 14 discharges the concrete 4 round section standing on the folding table 15, the folder-sectionneuse 16 and 17 fold the head have been previously brought into position which depend on the length of the concrete round section 4.


Otherwise, it is advantageous to secure the fixed blade of the shears with circular mandrel which thus absorbs the shearing forces generated by the movable blade that is located on the other side of the reinforcing rod.

It is seen from Figure 6 which is a view on a larger scale in section on VI-VI of Figure 4 the straightening machine 10 and the driving rollers 11 which receive reinforcing bars straightening 4. Of course, the shears of the folder-sectionneuse is not used on this rer. The invention also relates to methods of use of the straightening-forming machine defined above. Alternatively, the bending head 17 can be maintained in a fixed position.

It furthermore comprises a cutting device, one of the blades 7 of which is located in a recess 5 of the circular mandrel 1the said recess 5 being located near the point 6 where the reinforcing bar 4 comes into caereuse with the mandrel 1 at the start of the bending process. In order to better understand the invention, cadreise now be described by way of illustration and not limitation, an embodiment taken as an example and shown in the accompanying drawing.

The various movements of the various parts of the machine which has just been described can be controlled by a microcomputer, in particular, the lengths of the different concrete round sections which are cut by the straightening, the position of the folder-sectionneuse and that of the bending head and the bending angles of each. It is seen in Figures 3 and 4 a straightening-forming machine according to the invention comprising a straightening 10 provided with feed rollers 11 to push the concrete bar 4 from the coils 9 blockers between rollers 12 and 13 arranged in planes perpendicular.

In this position, it sends in the chute 14 to a predetermined length of round upright concrete which is conventionally sectioned in e. According to the invention, the mandrel 1 comprises fdr recess 5 in the vicinity of the cacreuse 6 where the reinforcing rod 4 comes into contact at the beginning of the folding process.

For example, the blade 7 can be advantageously moved relative to the blade 8. According to the present technique, the longitudinal members are made using a straightening machine that sends a predetermined cadeuse of yarn into a chute which discharges on a folding table which bbeton in the pin ends of the elongate elements. In the embodiment of Figure 1 corresponding to the relatively large diameter of bends, the two plates 6 and 7 of the cutter may be operated independently of the mandrel 1 which undergoes cadteuse none of the efforts due to shear.

Profiling machine for finished or semi-finished cadreusee. The machine just described operates in the following manner. In this embodiment, the fixed blade 7 of the shears is integral with the mandrel 1, while the movable blade 8 cuts the reinforcing rod 4 which is supported on the blade 7, which is supported by the chuck 1 which is integral the frame of the machine. Independent mobile device allowing the vertical binding of palletised loads for the purpose of transporting them.

According to the invention, the movable blade of the shears is appropriately set in the recess of the mandrel when the latter has a sufficient size. The invention relates to a bending-cutting machine for producing frames of reinforcement made up of reinforcing bars, of the type in which a finger provided with a roller pivots through an adjustable angle around a circular mandrel in order to bend the reinforcing bar around the latter.


Pipe conduit bending machine and method of making a pipe conduit with a soldered joint. This results in lower cost, universal machine that can perform all types of reinforcement. It is seen that the invention allows a simple way to achieve effective universal manchine who can perform all the necessary parts to obtain reinforcements for reinforced concrete.

Machine and working cycle for making plastic bags with a zip fastener and device for positioning them. Method for feeding fibres to a fibre cutting machine, and fibre cutting machine for implementing such method. In this way, the reinforcing rod 4 which is drawn when it enters the shaper. Process for manufacturing slideway elements for the seats of motor vehicles, ships, airplanes, etc.

The straightening-forming machine according to the invention first of all allows to realize the longitudinal elements of the reinforcement of reinforced concrete by sending into the trough, a round section with concrete prepared of predetermined length, whereupon this section falls on the folding table including the bending head and the folder-sectionneuse which are placed near the ends of the concrete round section ensures the folding of the ends thereof and carrying pins.

According to the invention, the latter comprises a chute 14 disposed above a folding table 15, which comprises, firstly, a folder-sectionneuse 16 according to the invention of the type represents- in Figures 1 and 2 and secondly a bending head To realize the longitudinal elements of the armatures, the straightening machine 10 is placed in the up position with the cylinder A1 Designated state s: When the frame is thus made the reinforcing rod 4 is advanced depending on the length of the pin that is desired and by moving the 7,8 of the shear blades to sever reinforcing bars, the liberating part of the trainer.

Also shown in this figure, the bending head 17, which is constituted by a mandrel 18 against which abuts a concrete bar 4 which is pressed by a movable finger 19 which is provided with a not shown roller and which can be rotated around the mandrel 18 by a predetermined angle to make the concrete round the folding around the mandrel 4. To achieve the frames, the straightening machine 10 is brought into the low position by acting on the cylinder 22 while the folder-sectionneuse 16 is returned to the right.

The present invention aims to achieve a folder-sectionneuse which allows to cut reinforcing bars in the immediate Neighborhood, its last fold without having to communicate movements back and forth.

It is understood that the reinforcing rod 4 is held in position by its right side, is caused to wrap around the mandrel 1 when the folding finger 2 and roller 3 is displaced in the direction of arrow F by pivoting about the axis of the mandrel 1. This recess is intended to receive the blade 7 of a shears the other blade 8 is disposed on the other side of the reinforcing bars 4.

Method and installation for assembling and dismantling the screws of an extruding machine. The trainer 10 then sends the folder-sectionneuse 16 a round length in concrete 4 such that the latter exceeds the brake 16 sufficiently to make a hook which is obtained by pivoting of the folding roller 3 Fig 1 and 2.

Kind code of ref document: Similarly, the bending head 17 may be secured in a fixed position.