SU1729666A1 - Apparatus for bending reinforcing wire to zigzag articles - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular, to equipment for the manufacture of curved products of zigzag shape, predominantly of reinforcing wire, and it allows to increase productivity and expand technological capabilities by producing bends having straight parallel platforms. The clamping jaws 2 of the device are connected in series with each other, in pairs of operating levers 5. A pair of central levers 6 are hinged on a central fixed support 7, which reduces the working stroke of the movable rails 8. The breaking levers 10 are connected to the upper operating levers 5. movements of large 3 and small 4 floating supports upper working levers 5 through one hinge mounted on sliders 11 and 12, which freely move along guides 13 fixed on central fixed support 7 and laterally outlets 14. The same length of all operating levers 5 and the rectilinear movement of the sliders 11 and 12 along the common guides 13 allow the wires to be bent with the same bend pitch and to obtain parallel straight lines at the same time. The movement of the lever member 1 is driven by a drive 15, consisting of one middle fixed support 7 and two extreme supports 16, in which a common double-sided rail 17 is fastened and through which two moving rails 8 can move. Two moving slats 8 are driven by two double pneumatic cylinders 18. In the initial position, the measuring reinforcement wire 26 is inserted into the cheeks of the jaws 2, Two dual pneumatic cylinders 18 are switched on, which move the housings 22, while the gears 23 fixed in the housings 22 run in along the common p The yoke 17u, at the same time, being in engagement with the movable rails 8, moves them. At the same time, the jaws 2 will be parallel to each other, and the armature 26 will be bent. 2 ill ..1 V | ho ch

Description

The invention relates to the processing of metals by pressure, in particular to equipment for the manufacture of curved articles of zigzag shape, preferably of reinforcing wire.

A known mechanism for bending reinforcing wire into zigzag products, comprising a drive and lever arms with jaws, by means of which the wire is bent without sliding along these jaws.

The main disadvantages of this device are the relatively low quality of the products, since such a constructive design of the device does not guarantee the accuracy of the feed pitch and low productivity, since the teeth on the product are made alternately by the mechanism.

The purpose of the invention is to increase productivity and expand technological capabilities by obtaining bends that have straight parallel parallel surfaces of one another.

Pa Fig, 1 shows the proposed mechanism in the initial position; Figure 2 is the same at the end of the wire bending cycle.

The device for bending reinforcing wire contains lever working bodies 1 with jaws 2 fixed on large 3 and small 4 floating supports, which are hingedly interconnected by pairs of working levers 5.

A pair of central levers 6 is pivotally mounted on a central fixed support 7, which makes it possible to reduce the working stroke of the movable rails 8. To prevent the working elements 1 from a dead center in a certain direction, springs 9 interacting with breaking levers 10 are installed in a certain direction on large floating supports 3 , With their second ends, the breaking arms 10 are connected to the upper operating arms 5. To obtain a rectilinear motion of large 3 and small

4 floating supports working upper arms

5 through one pivotally mounted on sliders 11 and 12, which move freely, along guide rails 13 fixed on the central fixed support 7 and lateral supports 14.

The same length of all operating levers 5 and the straight-line movement of the sliders 11 and 12 along common guides 13 makes it possible to bend the wire with the same bend pitch and thus obtain parallel straight-line platforms.

The movement of the lever member 1 is driven by a drive 15 consisting of one fixed 7 and two extreme supports 16,

in which a common rail 17 is fastened and through which two movable rails 8 can move. Two movable rails 8 can be driven by two doubles.

pneumatic cylinders 18. The small pneumatic cylinder rod 19 is hinged on the fixed bracket 20, and the large pneumatic cylinder rod 21 is fixed on the housing 22, moving along a common non-movable 17 and movable 8 rails.

Gear 23 is fixed in the housing 22 for free rotation, which is engaged with the rails 17 and 8. When the housing 22 moves, gear 23

5. Rolls along the common rail 17 and moves the movable rail 8. This mechanism allows an increase in the stroke length of the pneumatic cylinder 18. At the end of the movable rail 8, the stop 2 is fixed with the adjusting nut 25.

0 When moving the rail 8, the stop 24 t does not have an extreme slider 12 behind it, thereby activating the lever working members 1, which also act as a synchronizer of the work of two dual pneumatic tubes 5 firewood 18.

The mechanism works as follows.

In the initial position (Fig. 1), the measuring reinforcement wire 26 is placed in the cheeks of the jaws 2. Two dual pneumatic cylinders 18 are turned on, which move the housings 22. At the same time, the gears 23 fixed in the housings 22 run in along the common rail 17 and at the same time at

5 engaged with movable rails 8, move them.

The stops 24, exposed on the movable rails 8 by means of the nuts 25, synchronously move the extreme

0 sliders 12 to the central fixed support 7 along the guides 13. Moreover, the spring 9, acting on the breaking levers 10, brings the pairs of operating levers 5 pivotally connected to the large 3 and small 4 floating supports with the jaws 2 fixed on them, from a dead point . Moving further along the guides 13, the extreme slides 12 rotate in a hinge a pair of working levers 5 which move the large 2 and

0 small 4 floating supports down and up, respectively, relative to their original position. In this case, the jaws 2 fixed on them will always be located parallel to one another, and the fittings 26, embedded in the jaws 2, are bent.

After that, the rods of small pneumocycine - - 19 firewood are pulled back to their original position. In this case, the movable rails 8 are moved back by a certain amount and the stops 24 move away from the side drawers of the slider 12,

while clamped in the jaws 2, the reinforcement 26 is released. The curved reinforcement wire 26 is removed (removed) from the lever working members 1.

Claims (1)

Formula of the Invention A device for bending reinforcing wire into zigzag products, comprising a drive bending mechanism arranged on the base, including at least one pair of bending levers with means of wire fixation fixed on them in the process of bending, in order to increase productivity and expansion of technological capabilities by obtaining bends with straight parallel parallel one another platform, the bending mechanism consists of central and lateral supports, mounted On these supports, two guides, placed on guide slides, are n-ro number of pairs of working upper and lower levers, of which the upper and lower working levers of the central pair with their central part are hinged on the central support, and the rest are hinged in pairs on the entered device floating supports, which are fixed means of fixing the wire, made in the form of bending jaws, and means for removing the operating levers from the dead point, consisting of a guide rail mounted on the floating support with on it there is a sleeve and two levers, the upper ends of which are hinged on the sleeve, and the lower ones are hinged in the middle part of the upper operating levers, while the upper lever of each odd relation to the central support of the pair, its central part is pivotally connected with one of the sliders, and the drive of the device consists of the central and two extreme supports and fixed on the central and extreme supports of a fixed double-sided rail and two lateral movable rails placed in the guides of the central and extreme supports supporting supports on the ends for interacting with the extreme sliders a bending mechanism, two bodies, each mounted on the central and side toothed racks with the possibility of movement relative to the latter, located in the gear gear bodies, installed with the possibility of interaction with the central and one of the side rails, and two dual power cylinders with different-sized cavities, in which the rods of the large cavities of the pneumatic cylinders are connected to gear gear bodies, and the rods of the small cavities of the pneumatic cylinders are connected to the base.