SU500859A1 - Machine for bending curly products - Google Patents

Description

one

The invention relates to machine tools for bending metal bar loops.

A known machine for the folding of shaped articles is a hinge loop comprising a mechanism installed in a housing — centrally flexible in the form of a driving forming punch and two symmetrically located relative to it on the base of the mechanism of the flexible ends of the workpiece.

In order to increase the accuracy of production of loops and increase the product range, the proposed machine is equipped with a drive rocker mounted on a central bending mechanism with the possibility of reciprocating movement of the forming punch in the guide pins in the casing, as well as placed on the base coaxially with the forming punch spring-loaded ejector and calibration mechanism, made in the form of concentrically installed with a wedge ejector and located based kronschteyna scharnirno with two lips; tained symmetrically with respect to the wedge double-arm lever, on one arm of each of which is fixed profiled shaping roller, and on the second arm is mounted a smooth roller, which interacts with spring-loaded wedge.

2

FIG. 1 shows the proposed machine, front view; in fig. 2 is a section along A-A in FIG. one; in fig. 3 is a kinematic diagram of a st-ank; in fig. 4 - forms produced loops.

The machine contains the base 1, the housing 2, the central mechanism 3 are flexible, the mechanisms 4 and 5 are flexible END of the workpiece, the Ejection mechanism 6, the calibration mechanism, whose working bodies are located on the arm 7, the upper 8 and the lower 9 drives, as well as the left 10 and right 11 movement mechanisms.

On base 1, there is a lower drive consisting of a motor, a clutch, a brake shoe, a gearbox, an axle block, a common shaft on which two shchestren freely connected to the shaft through slits; The mechanisms 4 and 5 of the flexible ends of the harness, consisting of a slab on which a shaft with a gear is located, transmitting the rotation in a curved shaft with a knuckle pivotally connected by a rail moving returnable in the housing, the rail in turn transfers the rotation to the shaft with the gear wheel to which is fixed to the thrust roller 12 and the semi-disc with an eccentric fixed bending roller 13; a calibration mechanism, made in the form of a brace 7 located on the base with double-arm levers 14 and 15 hinged to it with profile rollers 16 and 17 on the upper shoulders and smooth rollers 18 and 19 on the lower ones interacting with the wedge 20; an ejection mechanism 6, consisting of a spring-loaded ejector 21, and a left 10 and 11 mechanisms of movement, consisting of a spindle with a nut, two bevel gears, a shaft and a handwheel.

On housing 2, there is an upper drive consisting of a motor, a brake shoe, a gearbox, a block of gears, transmitting rotation on a crankshaft with a connecting rod, pivotally connected to the Crawler 22 of the central bending mechanism 3, consisting of said slider 22 with a forming Luanson 23, reciprocating in the housing. A finger 24 is screwed into the slider for engagement with the beam 25, mounted with the possibility of reciprocating movement along guide pins 26.

For making a loop of configuration III (Fig. 4), the machine operates as follows.

The workpiece gets into the bending position, after which the lower 9 drive automatically switches on the rotary movement to the mechanisms 4 and 5 of the workpiece bends, which produce the bending of the ends of the workpiece with the help of the bending roller 13 around the abutment roller 12. After bending the ends of the workout, the bottom 9 automatically turns off the drive and turn on the top 8 drive, transmitting movement to the central bending mechanism 3, bending the workpiece in the middle with the help of a slider 22, which sets the forming punch 23 in motion. When approaching the extreme The lower position of the slider 22 acts on the wedge 20, which in turn presses on the smooth rollers 18 and 19 of the double-arm levers 14 and 15 of the calibration mechanism and the loop side is calibrated with the profile rollers 16 and 17. When the slider 22 moves up, the loop is pushed up by the ejector 21.

To obtain a loop of configuration I (Fig. 4), it is necessary to screw in the pin 24 of the mechanism 3 of the central bending up to the stop. After bend

the ends of the workpiece includes a central bending mechanism. When the slider 22 moves upward, the finger 24 is picked up by the finger 24, which raises the workpiece and it rotates 90 °, and when the slider moves down, the workpiece is lowered to the bending position, after which the workpiece is flexible in the middle. To obtain an AND and IV configuration loop

(Fig. 4) regulate the motion of the clip 20 and under the action of the slide 22, the sides of the loop perish.

To get another loop size along the length, you need to move mechanisms 4 and 5

flexible ends of the workpiece are relative to each other with the help of shtruvalov left 10 and right 11 mechanisms of movement.

Claims (1)

Invention Formula A machine for bending shaped articles such as rods from rods containing a central bending mechanism installed in a housing in the form of a driving forming punch and two symmetrically positioned relative to it. products, it is equipped with a drive rocker, mounted on a central bending mechanism with the possibility of reciprocating movement in the direction of the forming punch in guide rollers provided in the housing, as well as placed on the base coaxially with the forming punch with a spring-loaded ejector and calibration mechanism, made in the form of concentric with wedge ejector and positioned on the base of the brace with two pivotally symmetrically fixed with respect to the wedge with two shoulders levers, on one shoulder of each of which is fixed a profile shaping roller, and on the second shoulder mounted smooth roller, interacting with a spring-loaded wedge. / li i fpu.J NO U u -eight n n , 5 / J 7 2 / / / u I rn Z2 five X 23