SU1228943A1 - Arrangement for bending - Google Patents

Description

The invention relates to the processing of metals by pressure and can be used in industry for the manufacture of zigzag parts, in particular springs, brackets.

The purpose of the invention is to increase productivity and quality.

Figure 1 schematically shows a device for bending wire products, a general view; figure 2 - the node is flexible with a stop; in FIG. 3, view A in FIG. 2; in FIG. A, the turning support.

The device for bending of rolled products contains bending levers 2 and 3 located on both sides of the workpiece 1, the axes of the turning holes of which are mounted coaxially with the central axis of the matrix stand 4, whose working surface B is the lateral surface of the cylinder, and the hole where a matrix is installed, crosses the central axis of the pivoting holes of the bending levers 2 and 3 with a longitudinal axis. On the plane of the latter, fingers 5–8 are perpendicularly mounted, on which bending rollers 9 and 10 and pivoting rollers P and 12, interacting with working strips 13-16 of mechanisms 17 and 18 of rotation

ABOUT

The turning mechanisms 17 and 18 are made in the form of discs 19 and 20 with circular T-shaped grooves B, with the help of which the working turn bars 13-16 are fixed. The discs 19 and 20 are mounted on shafts 21 and 22 with driving gears 23 and 24, the latter being engaged, being driven into rotation from the gearbox 25 through a belt drive 26 and an electric motor 27. Rotatable gears 23 and 24 are mounted. work items are lower 28 and 29 and upper 30 and 31 strips. The lower bars 28 and 29 interact with the device for activating the feed mechanism 32, and the upper 30 and 31 with the rollers 33-36 of the pivoting stop 37 which is assembled on the shaft 38. On one side of the shaft 38, stop elements 39 are mounted, and on the other a disk 40 s rollers 33-36, which are located concentrically on the face surface of the disk 40. Springs are installed on the wings of the arms to return the bending levers to their original position

41-44.

The device works as follows.

0

15

0

five

0

five

0

S

0

The wire is threaded by hand into the matrix of the matrix rack 4, and then the device is switched to automatic mode. From the electric motor 27 via the belt drive 26 and the gearbox 25, the shaft 22 is rotated and through the gears 23 and 24, the rotation is transmitted to the turning mechanisms 17 and 18. When the latter rotates, the turn bar 13 comes in contact with the rollers 11 and turns the lever 2, the bending roller 9, rolling on the working surface B of the matrix stand 4, bends the wire 1. When the contact of the turn bar 13 and the roller 11 stops, the bending lever 2 the help of the springs 41 and 42 returns to its original state. At this time, one of the lower strips 28 turns on the device for turning on the feed mechanism 32 and feeds the wire 1 to the pitch limited by the pivot stop 37. After the wire I is brought into contact with the pivoting the roller 12 enters the turntable 15 and the lever 3, moving around the rotary axis by the roller 10, performs bending. During the bending operation, the upper strap 30 enters with one of the rollers, for example, roller 33, turntable 37, and rotates it to the desired angle. Then the cycle repeats.

The stop elements 39 of the pivot stop 37 are extended to the required amount and, in connection with the possibility of turning the pivot stop 37, the independence of the bending process from the wire feed and the ability to easily and widely adjust the start and end of the bending process in the machine or the workpiece, with sides of different lengths and with sufficiently high accuracy.

The presence of T-shaped grooves B on disks 19 and 20 allows an increase in the number of pivot plates and ensuring their accurate installation, which will increase the device performance several times. But at the same time, accordingly, it is necessary to increase the number of stop elements of the pivoting stop and pivoting elements on the drive gears.

Similar in design devices can be bending 1ent, wire, angle and other long products.

on ensures the implementation of high-performance bending of long products with

Higher precision bending, which will improve product quality and reduce cost.

 15

45

22

FIG. four

Editor A.KoEoriz

Compiled by E. Chistkov

Tehred And „PopovichKorrektor L, Patay

Order 2334/8 Circulation 783 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

The speech and printing enterprise, Uzhgorod, ul. Project, 4

Claims (5)

1. DEVICE FOR BENDING mainly serpentine spirals, comprising a workpiece feeding mechanism, a rack with a guiding element and a bending mechanism with a roller; A --- <±> n> h4e-s ± s - itrvnr tu. .7TTP with the possibility of rotation around the rack from the drive, characterized in that, in order to increase productivity and quality, a hole is made in the rack for guiding the workpiece, the bending mechanism is made in the form of two levers with an additional roller fixed to each of them, and the rotation drive each of the levers is made in the form of a disk with strips placed on it and protruding beyond its limits, with additional rollers of the levers installed with the possibility of interaction with the strips of the disks. 2. The device according to claim 1, wherein the matrix sleeve is installed in the guide hole of the rack. SU „, .1228943 FIG. 1 228943 2 The wire is manually fed into the matrix of the matrix rack 4, and then the device turns on in automatic mode. From the electric motor 27, through the belt drive 26 and the gearbox 25, the shaft 22 is rotated and through the gears 23 and 24 the rotation is transmitted to the rotation mechanisms 17 and 18. During the rotation of the latter, the rotary BUT plate 13 makes contact with the rollers 11 and rotates the lever 2, the bending roller 9 rolls over the working surface B of the matrix strut 4, bends the wire 1. When the 115 contact of the rotary bar 13 and the roller 11 stops, the bending lever 2 with the help of springs 41 and 42, it returns to its original state. At this time, one of the lower bars 28 includes 20 a device for activating the feed mechanism 32 and feeds wire 1 per step limited by the rotary stop 37. After feeding wire 1 into contact with the turn the pivot roller 25 12 enters the pivot plate 15 and the lever 3, moving around the pivot axis by the roller 10, performs bending. During the bending operation, the upper bar 30 makes contact 30 with one of the rollers, for example, roller 33, of the swing stop 37 and rotates it to the required angle. Next, the cycle repeats. The stop elements 39 of the swivel stop 37 are extended by the required amount and due to the possibility of turning the swivel stop 37, the independence of the bending process from the wire feed and the ability to easily and widely control the beginning and end of the bending process in the device’s cycle, it is possible to perform high-performance part bending with sides different lengths and with access, exactly high precision. f> S The presence of T-shaped grooves B on the disks 19 and 20 allows to increase the number of rotary rails and ensure their accurate installation, which will increase the productivity of the device by 50 times. But in this case, accordingly, it is necessary to increase the number of thrust elements of the rotary stop and rotary elements on the drive gears. ' ⁵ Similar devices can be used for bending tapes, wires, corners and other long products.