SU910283A1 - Apparatus for double-side beading of tubes - Google Patents

Description

(5) DEVICE FOR DOUBLE SIDE PIPING

I

The invention relates to the processing of metals by pressure and can be used in machines for flanging the ends of pipes.

M3BectHO double-flanging device for pipes containing I-frame, dies, punches and drive for moving the punch T}.

taKoe constructive solution does not provide self-centering of the pipes during processing. It is necessary ;; however, for each pipe size it is necessary to produce its own matrix, which leads to an excessive waste of metal and a considerable amount of time for the changeover of the press.

The purpose of the invention is to increase device performance, improve working conditions and increase reliability.

The goal is achieved by the fact that a device for double-sided flanging of tubes, comprising a frame, removable dies and punches with

driven, equipped with free carriage moving along the frame along the longitudinal axis of the device by carriages and matrix holders in the form of clamping grips suspended through spring compensators, as well as power hydraulic cylinders installed between the jaw of one castor and the lever of the other; at the same time, the removable dies are made in the form of two half-dies, fixed in the grippers of castors.

FIG. 1 shows a general view of the press; Fig. 2 shows the molding core matrix; in fig. 3 - removable

15 matrix.

In the front cross member 1 there is a working hydraulic cylinder 2, two return cylinders 3 and a drive k.

Rear cross member 5 is connected to

Claims (3)

The 20 front sections of the rectangular section are of the upper 6 and lower 7. A movable cross rail 8 is installed between the drafts, in which the electrically driven product 9 and the removable punch 10 are located. The second punch 11 is mounted on the piston of the main cylinder of the device. The molding dies 12 in the upper part are connected to the suspension carriages. 13 through spring compensators 14, which provide an alignment of the tubes and prevent them from breaking when grabbed by the dies during the flanging. : Tubes are transferred to the open molding molds by a pneumatic lift 15 installed on the lower bar of the device 7, on the opposite side of which a platform is established for rolling and removing the tubes after picking up the tubes (not shown). The molding matrix 12 is made in the form of tick-borne grips of two castors 16 and 1 interconnected by a semi-axis. In the upper part, each of the claws has an elongated lever that connects to the head the piston rod of the hydraulic cylinder 18, hinged in the body of the opposite gripper, i.e. to thrust, which provides the necessary force of pipe crimping. In the lower part, the matrix 12 has a locking device in the form of welded plates, which interfere with the lateral shift in the flanging process (not shown). The grippers 16 and 17 each have four holes for attaching semi-matrices of different tubes. The matrix 12 is connected with a semi-axle to a spring compensator, which in turn is connected to a suspension carriage 13. The matrix 12 can be made in the form of two semi-matrix 20 and 21, which are installed in the grippers of the matrix holder and bolted. The device works as follows. The pipe to be flared, is fed to the receiving platform and, together with the flanges shifted to the middle of the pipe, rolls onto the lift V. By turning on the hydraulic cylinders 18, the glue of the molding matrix 12 opens, and the under-plate feeds the pipe into them. By displacing the suspension carriages 13, the required amount of protrusion is adjusted: the pipe ends beyond the line matrix, after which the hydraulic cylinders act on the matrix 12 and clamp the pipe ends. Then, by moving the screw stop 9, the punch mounted thereon is brought to the pipe, after which the piston of the main cylinder 2 of the device is put into operation with the punch 11 fixed on it, which moves it to the full stop into the pipe and produces simultaneous flanging of the pipe from both sides. After flanging, return cylinders 3 are included, which move the piston of the main cylinder to its original position along with the punch I1. By turning on the screw stop 9 on the return stroke, the pipe is released from the second punch 10, the Grips 16 and 17 of the mattress 27 open, and the pipe rests on the 1-bar 15, which lowers it and rolls to the finished product platform. The design is simple, provides high performance. Claim 1. A device for two-sided flanging of tubes containing a frame, removable dies and punches with a drive, characterized in that, in order to increase productivity and improve working conditions, it is equipped with carriages installed along the frame with the possibility of movement along the longitudinal axis of the device and suspended on them through spring compensators matrix holders, 2. The device according to claim 1, which is designed so that the matrix holders are made in the form of clamp grippers with levers and are equipped with power hydraulic cylinders installed between the gripper of one castor and the lever of another castor. 3. The device according to Claim 1, which is detachable matrices are made in the form of two semi-matrixes fixed in the casting grips. Sources of information taken into account in the examination 1. Installation drawings for two-sided selection of pipes of the Kharkov KMZ, made on the basis of the press Pb73b, 1975 (prototype).