SU1186337A1 - Machine for bending shaped articles - Google Patents

Description

The invention relates to machines for bending products of the type of brackets detachable load-suspension suspensions and can be used at enterprises manufacturing equipment and 5

equipment for them, including load handling devices.

The purpose of the invention is to increase productivity and simplify the design. ten

FIG. 1 shows a machine for bending curly articles, front view; in fig. 2 shows a section A-A in FIG. in fig. 3 - a kinematic diagram of the mechanism of the flexible ends of the workpiece and the mechanism of orientation of the workpieces.

The machine for bending curly products includes a housing 1 on which the central bending mechanism 2 is mounted, bending mechanisms for the ends 3, but-20 of item 4, the feed mechanism for blanks, the orientation mechanism for blanks, support rollers 5 mounted on carriages 6 moving in guides? on the housing 1. The central bending mechanism 25 2 is installed in guides 8 fixed on the housing 1, and consists of a forming punch 9 with bevels 10, a spacer bar 1 1 with wedges-30 grips 12 fixed on it, a work feed mechanism and hydra cylinder 13.

The mechanisms of the flexible ends 3 of the workpiece 4 are installed in the guides 14 symmetrically with respect to the mechanism 2 35 using screws 15 with right and left threads and contain bending shafts 16 with bending rollers 17 and driving sprockets 18. The bending rollers 17 are driven by 40 chains 19 connected with deflecting sprockets 20 and interacting with sprockets 18. Chains 19 are connected by one ends with adjusting screws 21 with half-45 of the zune 22, and the other with pro-weights.

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The feed mechanism blanks made in the form of two wedge grips 12, rigidly mounted on the spacer 50

the bar 11 of the mechanism 2, and two coupled arms 25 and 26 interacting with the springs 24, symmetrically located relative to the mechanism 2 and hinged on the uprights 27.55 mounted on the housing 1. The twin arms 25 and 26 interact with the wedge grips 12 when

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help blanks 4. Polozki 28 together with the slats 29 are guides for feeding blanks 4 into the work area.

The workpiece orientation mechanism consists of two orienting levers 30 with bevels 31, an additional lever 32, clamps 33, connecting rods 34 with a spring 35, kinematically interconnected so that when the orienting end of one of the levers 30 moves with bevel 31 to or from the center it corresponds to exactly the same movement of the orienting end of the second lever 30. The orienting levers 30 are hingedly mounted on the uprights 27 symmetrically with respect to mechanism 2. '

Machine for bending curly products works as follows.

• Billets 4 are stacked on the runner. 28 (Fig. 2), with the first workpiece resting on the wedge grips 12, for which the levers 25 are lifted up first. The machine is turned on and the idle cycle of the machine operation, similar to the worker, is performed first, resulting in the lowering of the wedge mechanism 2 attached to it by the grippers 12, the first billet rolls all the way into the levers 26 and is held by the force of the springs 24. When the mechanism 2 returns to its original position, the wedge grips 12, acting with their bevels through the billet on the paired levers 25 and 26 and turning , lead the workpiece into the work area, between the bending 17 and the supporting 5 rollers. Turning, the levers 25 are raised, allowing the next billet to slide all the way into the wedge grips 12 and take the place of the first billet.

When the first workpiece enters the work area, it frees the twin levers 2 _to 5 and 26, which, falling under the action of springs 24, cut off the remaining workpieces from the workpiece resting on the wedge grips 12. At the same time, with its ends, it acts on bevels 31 of the orienting levers 30 pushes the last, walking between them. If the ends of the first workpiece are shifted when entering the working area (the workpiece is located asymmetrically with respect to the axis of mechanism 2), then in contact with

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they will have only one of the orienting levers 30, which, under the action of the spring 35, rotating around its axis, will move the workpiece towards the opposite kinematically connected to it through the central lever 32 by means of clamps 33 and the connecting rods 34 of the orienting lever 30 synchronously rotating towards the first orientation, on the twitching lever 30. At the moment when both orienting levers 30 rest into the workpiece, it will stop oriented relative to mechanism 2.

Next comes the work cycle. Slider 2 15

it also lowers through sprockets 20 and 18 with supports 19, rotating bending shafts 16 with bending rollers 17, which bend the ends of the workpiece around the support rollers 5, while> 0 the carriage 6 is locked with spacer plate 11. Then the mechanism 2 is lowered, freeing the carriage 6 locked by the spacer bar 11 and allowing the new billet to roll all the way to 25 levers 26. After the carriages 6 are released, the forming punch 9 clamps the billet to its center through the support rollers 5 of the carriage 6, shifting they are 30 down and to the center, thereby realizing the final bending of the workpiece into the part.

At the end of the final flexible mechanism 2 and the slider 22 make a return stroke, in which the bending rollers 17 are returned to their original position by means of the counterweight 23, the finished part is removed from the support rollers 5 by using the bevels 10 of the forming punch 9, the carriages 6 are returned and fixed in the initial position spacer bar 11. The workpiece held by the levers 26 by means of the wedge grips 12, is introduced into the work zone, well. When entering the working area, it is' '' oriented by the levers 30 and, acting on the paired levers 25 and 26, allows the subsequent billet to move up to the stop in the wedge grips.

Then the working cycle repeats.

Execution of the workpiece feed mechanism in the form of two wedge grips attached to the central bending mechanism and two paired spring-loaded levers, which determine the sequence of the workpieces in the work area, will allow the use of the backward movement of the central bending mechanism to feed the workpiece into the work area and thereby increase the productivity of the device.

In addition, there is no need to use an additional drive and control system, which simplifies the design of the device.

Fig}

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Claims (1)

MACHINE FOR THE BENDING OF FIGURED PRODUCTS, containing the central bending mechanism installed in the housing, the mechanisms of the flexible ends of the workpiece located symmetrically relative to it, having driving bending discs with bending and supporting rollers, and the mechanism of orientation of the workpieces, characterized in that in order to increase productivity and simplify construction, it has a billet feed mechanism, consisting of two rigid bends fixed on the mechanism of the central gib and wedge grips symmetrically relative to it and: two paired spring-loaded levers mounted on the body of the machine, installed with the ability to interact with the wedge grips at the moment of the workpiece supply, the workpiece orientation mechanism consists of two orienting double-arm levers with bevels, kinematically interconnected by means of connecting rods and spring-loaded central two-arm lever bending of the ends of the workpiece has guides fixed on the body, placed in the carriage guides on which the bending discs are mounted, sprockets placed on the body and on bending disks, blocks placed on the body, two lamellar chains and weights, while the lamellar chains bend around the asterisks and blocks and their ends are fixed on the slider, while others are connected with weights. zi 11863 ι 1186;