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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The shear stress between the two blades 7 and 8 is constructed in the known manner, for example by means of a hydraulic or pneumatic cylinder.

The trainer-forming machine according to the invention also makes it easy to achieve even small frames thanks to the fact that the folder-sectionneuse which is close to the trainer allows to cut reinforcing bars near the last bend without communicate a back and forth. Found in Figure 2 the bending finger 2 and the roller 3 and the reinforcing rod 4. 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 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.

To realize the longitudinal elements of the armatures, the straightening machine 10 is placed in the up position with the cylinder The invention also relates to methods of use of the straightening-forming machine defined above.

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.

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. 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.


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Alternatively, the bending head 17 can be maintained in a fixed fre. 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. In this position, it sends in the chute 14 to a predetermined length of round upright concrete which is conventionally sectioned in e.

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. Similarly, the bending head 17 may be secured in a fixed position. According to the invention, the latter comprises a chute 14 disposed above a folding table 15, which comprises, firstly, a cadreusw 16 according to the invention of the type represents- in Figures 1 and 2 and secondly a bending head 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.

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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.

The frames are made using another machine called clamping machine which comprises at least one bending head fed by a trainer. 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 cadreus on cadreuee machine frame and at 24 on the support 20 of the straightening Sur ce dessin, On this drawing. 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 cadreuee blade 7, which is supported by the chuck 1 which is integral the frame of the machine.

Is schematically shown in Figure 1 a first embodiment of a folder-sectionneuse according to the invention. Of course, the shears of the folder-sectionneuse is not used on this occasion.

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Pipe conduit bending machine and method of making a pipe conduit with a soldered joint. This folder-sectionneuse comprises in known manner a circular folding mandrel 1 and a folding finger 2 which is provided at its end with a roller 3 which can be pivoted about the axis of the mandrel 1. It is understood that the embodiments which have been described above presents no limiting caereuse can receive any desirable modifications without departing from the scope of the invention.

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The trainer 10 then advances the concrete bar 4 of a length corresponding to one side of the frame and the folding roller 3 performs the folding of the reinforcing rod 4 and so on until the formation of the different sides of the frame.

The trainer cadruse 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. In this way, the reinforcing rod 4 which is drawn when it enters the shaper.

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 betoon of the concrete round section 4.

The present invention aims to achieve a folder-sectionneuse which allows cadreusd cut reinforcing bars in the immediate Neighborhood, its last fold without having to communicate movements back and forth. It furthermore comprises a cutting device, one of the blades 7 of which is located in a recess betno of the circular mandrel 1the said recess 5 being located near the point 6 where the reinforcing bar 4 comes into contact with the mandrel 1 at the start of the bending process.

In the embodiment betn 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 accordingly none of the efforts due to shear. 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.