SU727285A1 - Apparatus for producing mounting loops from reinforcing wire rod - Google Patents

Description

(54) DEVICE FOR MANUFACTURING FROM ARMATURE CATANOUS ASSEMBLY LATERS

The invention relates to devices for bending bar metal or wire, in particular reinforcing rod, with the aim of producing from it mounting loops for concrete products and can be applied in any industry where it is necessary to make loop-shaped products of wire or bar metal having a bend in the middle parts and curved ends.

A device for the manufacture of reinforcing rods of mounting loops, containing feed and bending mechanisms mounted on the frame, consisting of a drive traverse placed on the frame with a punch attached to it for bending the middle of the loop and two parallel mounted gear racks interacting with gears carrying bending rollers for flexible ends of the loop, and thrust rollers placed on the bed, as well as supporting elements for bending workpieces in each of the bending mechanisms 1 ..

The disadvantages of the known device are as follows:

When the ends are bent, the workpiece rests on the cam-pivoting arms that are designed to transfer the workpiece to the next bending mechanism, these arms, when rotated to move the workpiece, and their return to the initial position can mix the workpiece, which leads to poor-quality production of loops; the thrust rollers are made with wire guides allowing the workpiece to be turned down with the curved ends down as it moves toward the supporting elements of the next bending mechanism, which also reflects on the quality of the produced loops; The supporting elements of the workpiece of the mechanism of the flexible middle of the loop, made in the form of plates mounted on the frame, with slots for movement of the bending rollers, make it difficult to access during maintenance and adjustment of the device.

The aim of the invention is to improve the quality of the mounting loops.

Claims (1)

The goal is achieved with the exception of arbitrary displacement of workpieces when moving between bending mechanisms due to the fact that the supporting elements of the mechanism of the flexible ends of the loops are made in the form of cantilever brackets spaced one from another at a distance smaller than the length of the workpiece, and from the thrust rollers at a distance larger than the bent workpiece, the supporting elements of the mechanism are flexible middle of the loop sovmesh, Jena with a stationary axis of the gear, the laying of the bending roller, while the end surfaces of the thrust rollers are located in the end surface of the punch. FIG. 1 shows a kinematic diagram of the device; in fig. 2 shows a vertical section of the device along the axles of the thrust rollers and gears. A device for making mounting loops from reinforcing rod comprises a frame 1 on which a drive 2 is housed with a crank-schatunny mechanism 3 connected to a cross member 4 mounted on rails 5 and hingedly connected to two toothed rails 6, which are engaged with gears 7, carrying the bending rollers 8 and rotating around the fixed axles 9 (Fig. 2) located in the housings 10 and connected to the supporting elements 11 of the bending mechanism of the middle of the loop. The housings 10 are mounted on guides 12, along which they can move from the screws 13. On the cross beam 4, through the adjusting screw connection 14, a punch 15 is fixed with two bending rollers 16. On the support frame there are fixed thrust rollers 17 for bending the middle of the loop. Opposite to the axes 9 (Fig. 2), stop rollers 18 are located for bending the ends of the curvature, and next to them and in height within their length are the supporting elements of the bend end flexible mechanism - cantilever arm 19, the distance between which is less than the length of the workpiece. With the crosshead 4, the ha 20 is hingedly connected with the cam 21 fixed on it and the supporting roller 22, having the ability to move along the guide 23 with the inclined swivel portion 24. Above the guide 23 there are levers 25 and 26 of the lever systems for feeding the workpiece 27 respectively to the bending mechanism the ends of the loop and reset the finished loop. The position of the middle of the loop is flexible, the tipping is applied by its own weight after moving away from it of the bending rollers 8, due to the gap between the cantilever brackets 19 and the outer surface of the curved ends of the loop, for which the gap between the stop roller 18 and the cantilever bracket 19 is provided with a larger diameter d of the workpiece. However, the workpiece cannot be displaced from or reversed, since it is guided by curved ends over the stop rollers 18, the lower end surfaces of which are in the upper end plane of the punch: -. ., “J -,;,. . The device works as follows. In the initial position, the workpiece 27 is in the channel 28. Traverse 4 from the drive 2 through the crank mechanism 3, makes a reciprocating motion along the rails 5. When idling, the traverse of the ha ha 20, moving along the guide 23, acts 21 on the lever 25, as a result of which the chute turns and the workpiece falls on the cantilever brackets 19. During the working movement, the toothed reyi 6 impart rotational movement to the gear 7, while the bending rollers 8 rigidly attached to them bend the ends of the workpiece around the pack 18 rollers. With the help of a support roller 22, T. ha 20 moves along guide 29 and, at the end of the working stroke, the crossbar extends beyond the turning section 24 of the guide 23. During the next idle stroke of the cross beam, the bending rollers 8 move away from the workpiece the weights, centered by the curved ends along the stop rods 18, move in the direction of the supporting elements 11 of the bending mechanism of the center of the net. When interacting with the upper end surface 30 of the punch 15, making idle with the crosshead, the workpiece (still centered on the stop rollers 18) stops, and when the punch comes out from under the workpiece, it, falling off the stop rollers 18, falls on the supporting elements with curved ends 11 mechanisms are flexible middle of the loop. During the next working stroke, the yoke 4, the punch 15 pulls the workpiece between the thrust rollers 17, and during the next idle movement, the yoke, going through the supporting roller 22 along section 24 to the guide 23, acts on cam 26, which turns the lever 31, resulting in a reset of the finished loop. Thus, in the present invention, the issue of the automatic production of high-quality mounting loops is solved by eliminating the possibility of arbitrary mixing of the preform on the supporting surfaces of the bending mechanisms. The invention is a device for producing mounting loops from a reinforcing rod, comprising feed and bending mechanisms mounted on a frame, consisting of a drive beam placed on the frame with a punch attached to it for bending the middle of the loop and two parallel-mounted toothed racks interacting with gears bending rollers for flexible ends of the loop, and thrust rollers placed on the bed, as well as supporting elements for bending workpieces in each of the bending mechanisms, ayuschees in that in order to enhance the quality by eliminating mounting tabs random interplanting of blanks on the support members when moving between the bending mechanisms, the support elements of the mechanism of bending the ends of loops are formed as cantilever arms, spaced from one another at a distance. the smaller length of the workpiece, and from the thrust rollers at a distance greater than the diameter of the bent workpiece, the supporting elements of the bending mechanism of the middle of the loop are aligned with the fixed axis of the gear that carries the bending roller, while the end surfaces of the stop rollers are located in the plane of the end surface of the punch. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 428840, cl. B 21 F 45/26, 1971. 7 6