SU1542659A1 - Automatic machine for simultaneous bending of the ends of elongated billet in opposite directions - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to devices for simultaneously bending S-shaped articles. The purpose of the invention is to expand technological capabilities and increase productivity. The machine contains plates 1, 2, mandrels 17 and pressure rollers 14 mounted on the drive swivel arms 13. Before work, the adjustment movement of the mandrels, swing arms and pressure rollers to the desired position is performed. After bending, the moving plate 1 is moved. The mandrel, which consists of two halves, opens and the finished part falls down. 1 hp f-ly, 10 ill.

Description

The invention relates to the processing of metals by pressure, in particular to devices for simultaneously bending S-shaped articles.

The purpose of the invention is to expand technological capabilities and increase productivity.

FIG. 1 shows an automatic machine, front view, section (without a movable plate); in fig. 2 - section A-A in FIG. one; in fig. 3 shows a section BB in Fig. 1 (a section of a socket for fastening interchangeable linings); FIG. 4 shows an incision of antagonism

The supporting and holding workpiece 19, which on the opposite side is supported by a concave stream 20 of the pressure roller 14. Those halves of the mandrel 17, which are fixed on the levers 13, are made with a stepped hole on the side of the latter, through which an oval smaller part 21 enters - a latch 18 holding the half of the mandrel 17 connected while bending the workpiece 19

Separation of the halves of the mandrel 17

25

thirty

35

replaceable invoice; in FIG. 5 - the base-) $ occurs at the exit from the cavity on the axis, side view; in fig. 6 is a view In figure 5; in fig. 7 - axis - lock, front view; in fig. 8 - axis - lock, side view; in fig. 9 - view of G on 1fig.2 (fixed (back) plate); 20 in FIG. 10 - section dD in Fig.9.

The machine consists of vertically arranged plates: the front movable plate 1 and stationary - intermediate plate 2 ;. and the rear plate 3, In each plate 1-3 there is a pair of through, vertically positioned and several grooves 4 displaced relative to each other in the vertical position.

In the grooves 4 of the fixed plates 2 and 3 are placed the main axis 5, on which the gears 6 are rigidly fixed, which are in contact with the drive gear rack 7 supported by the roller 8. The ends of the axes 5 protruding beyond the plate 3 are connected to the fixing plates 9 with grooves 10 through which the clamping bolt 11 passes. To avoid violation of the straightness of the plates 9, their free ends are provided with thrust protrusions 12, which prevent the plates from tilting 9. On the second ends of the axes 5, the rotary levers 13 of the pressure rollers 14 are rigidly fixed, which rotate and axes x 15, can be shifted in the slots 16.

In addition, each lever 13 is equipped with a half mandrel 17, the second half of which is mounted on a figured axis — a clamp 18 fixed in the groove 4 of the movable plate 1. The main axis 5, the centers of the halves of the mandrel 17 and the fig axis — the clamp 18 of each node are located in one horizontal plane. In this case, each half of the mandrel 17 is made in the form of a truncated cone, and when connected, they form a stream, centering 40

45

50

55

tongue 22 through the oval hole in the predetermined position of the pressure bar 14, i.e. in the end position of bending the workpiece 19. This occurs when the rotary lever 1 contacts the sensor 23, which simultaneously stops the movement of the gear rack 7, includes the working and return stroke of the power cylinders 24 and the lever 13 to set them to their original position.

The sensor 25 serves to stop returning the nodes to the initial position, i.e. idling and sensor 26 to activate their working stroke. For the correct orientation of the threads 19, the upper feed nous 27 and the lower feed cone 28 in which the wall on the side is not bent at the end of the workpiece are used. Both nous 27 and 28 are fixed on the intermediate fixed plate 2 from the movable plate 1.

Accounting for finished products is carried out with a chuck 29, which by its mechanism 30 contacts with a height of 31 mounted on one of the rotary levers 13. If it is necessary to bend the workpieces 19 of another type, they change the position of the main axes 5 and the axes - fixed 18 and grooves 4 , fixing the plates 9 with the bolt 11 and the axles - the fasteners 18 ga 32, and on all the halves of the mandrel install interchangeable pads 33 which are fastened with the bolts 34 in the angles 35.

The machine works as follows.

With known parameters of curved workpieces, the axles 5 and 18 are mounted, the shifts 32 are fixed or removed, and the pressure rollers 14 are moved or moved

five

0

35

$ occurs when exiting cavity 0

40

45

50

five

tongue 22 through the oval hole 21 in a predetermined position of the pressure roller 14, i.e. in the end position of the bending of the workpiece 19. This occurs when the rotary lever 13 contacts the sensor 23, which simultaneously stops the movement of the rack 7, includes the working and return stroke of the power cylinders 24 and the levers 13 to set them to their original position.

The sensor 25 serves to stop the return of the nodes to be flexible to their original position, i.e. idling and sensor 26 to activate their stroke. For the correct orientation of the workpieces 19, the upper feed cone 27 and the lower feed cone 28, in which the wall on the bend side of the end of the blank is missing, serve. Both cones 27 and 28 are fixed on the intermediate fixed plate 2 from the side of the movable plate 1.

The metering of finished products is carried out by a counter 29, which by its rotary mechanism 30 contacts a protrusion 31 mounted on one of the rotary levers 13. If it is necessary to bend the blanks 19 of another size, they change the position of the main axes 5 and the axes of the latches 18 and the slots 4, fix the plates 9 with a bolt 11 and axles - retainers 18 with nuts 32, and interchangeable pads 33 are attached to all half of the mandrel 17, which are fastened with bolts 34 in the slots 35.

The machine works as follows.

With the known parameters of the bent workpieces, axles 5 and 18 are installed, the interchangeable pads 32 are fixed or removed, and the pressure rollers 14 are pushed or pushed on the pivoting levers 13 In this case, during the displacement of the main axes 5 in the slots 4, the contactness of the gear wheels 6 with the rail 7 is not broken due to its constant holding by roller 8, excluding the violation of their contact in any position of the axes in the grooves 4. Having ascertained the correct observance of all the specified parameters, the automatic transmission drive and feed drive are simultaneously turned on 19 blanks.

Billet 19 of the feeder with a predetermined periodicity in a vertical position alternately one after another enter the cone 27, each slipping between the pressure roller 14 and the mandrel 17 of the bending assemblies, with its lower end fall into the lower cone 28 in which the sensor 26 is placed.

When pressing the workpiece 19 on the sensor 25 automatically turns on the drive of the working stroke of the rail 7, which, turning the wheel 6, rotates the axles 5, and these, in turn, rotate the levers 1 3 with the pressure rollers 14 and the halves of the mandrels 17, and the workpiece 19 is turned off о Turning together with the levers 13, the pressure rollers 14 bend both ends of the workpiece 19 around the mandrels 17 with a given curvature of the ends and the radius of the arcs.

Having reached a predetermined curvature, one of the levers 13 contacts with the sensor 23, which automatically turns off the working stroke of the actuator of the rail 7 and includes the translational stroke of the pistons of the power cylinders 24 "The latter moves the moving plate 1 for a given distance, entailing half of the mandrels 17 together with the axles 18, which figured protrusions 22 have come out of engagement with the halves of the mandrels 17 on the levers 13, through the oval holes 21. In this position of the half of the mandrels 17, the bent workpiece 19 is not held and falls down onto the conveyor belt and in the container

After removal of the bent workpiece 19, the pistons of the cylinders 24 return to their original position by the command of the sensor 23 and the return motion of the levers 13o is activated. At that, the lever 13 with the protrusion 31, which is in contact with the rotary mechanism 30, rotates the counter 29 by one unit and contacts the sensor 25 , includes the submission of blanks 19 with the simultaneous shutdown of return to the outcome5426596

The position of the levers is 13. The duty cycle of the automaton is repeated.

Claims (2)

1. An automatic machine for simultaneous bending in opposite directions of the ends of a lengthy billet, containing two plates, two mandrels, hinged on axles, the trunnions of which are located and fixed in the corresponding holes made in the plates, two driving rotary 5 levers hinged on the axles, the pins of which are located and fixed in the holes made in the plates, two pressure rollers hinged on the axes of the axles 0 which are located and secured in corresponding openings made in pivotal levers, characterized in that, in order to expand technological capabilities and increase productivity, the machine is equipped with an additional plate arranged parallel to the first one with the possibility of reciprocating movement in the direction perpendicular to its plane, and all the plates are arranged vertically, the working surfaces of the mandrels and the pressure rollers are made with a stream of a triangular profile, each mandrel is made of two halves with a plane of the connector, perpendicular to the axis and the stream passing through the top of the profile, the axes of the mandrels are cantilever-mounted on a movable plate with the possibility of adjusting movement in the vertical direction and arranged so that the working surfaces of the mandrels are tangentially facing each other vertically, while the movable plate has grooves for the axles of the axes of the mandrels, and the holes in the fixed plates for the axles of the axles of the swivel arms are also made in the form of grooves opposite the corresponding grooves movable plate, wherein the axes of the pivoting levers are mounted in the fixed plates with the possibility of adjusting movement in the vertical direction and fastening opposite the axes of the mandrels, and the pivoting levers are fixed on the cantilever part of the axes located on the side of the basement plate five the solo end of the mandrel axis has a projecting locking tongue, and the half of the mandrel facing the rotary lever has a stepped hole with an axis, a lesser diameter of which faces the second half of the mandrel and has a cross section, the profile of which corresponds to the axial section of the axle with a tongue, and a larger diameter has a radius corresponding to the radius of the tongue on the axis, the pressure rollers mounted on the swivel arms with the possibility of adjusting the movement in the direction  26 s FIG. 2 radially relative to the axis of rotation of the levers, each of the halves of the mandrels is provided with interchangeable plates forming a stream and fixed to the working surfaces of the mandrels. 2. The automaton according to claim 1, differing in yushi and with the fact that it is equipped with two locking plates and a screw, at one end of the plates a hole is made for the cantilever section of the axle of the pivot arm axis, and at the other - the groove, the plate is fixed on one from fixed plates by means of the mentioned screw. 6-6 FiaZ 34 Phage 5 In id fig.z s FIG. eight / tfwuSoJg w ///////// 7 //// - i „V /, ESsS ™ rr KSH /////////// I% 17A (rig 10