SU967685A1 - Hydraulic rocking shears - Google Patents

Description

The invention relates to the processing of metals by pressure, namely to metallurgical equipment, and can be used for cutting ingots cast on continuous casting machines.

Known hydraulic swinging shears, consisting of a frame in the form of a rigid modular frame, in the window of which a movable lower caliper is mounted. The slide rails span the projections of the bed legs and are made removable on one side. The working cylinders are built into the lower yoke 1.

The disadvantages of scissors are the large dimensions in width and large mass. In addition, to repair the work of the hydraulic cylinders and guides of the movable caliper, it is necessary to dismantle it, which is done by tilting the scissors to the non-working position, disassembling the removable guides and removing the caliper from the frame window, which is a very laborious operation.

Known hydraulic swinging shears, mainly for continuous-casting machines, containing a stand with racks and

guides, non-movable and movable calipers with knives attached to them, a power cylinder and a shear swing drive 2.

The width of these scissors is also large, to disassemble the scissors during repair, it is necessary to dismantle the upper traverse, the columns and lower the 1-LOWER caliper down under

10 live rolls.

The purpose of the invention is to simplify the design and improve the conditions for their repair. .

15 The goal is achieved by the fact that in the hydraulic swing shears, mainly for continuous casting machines, blanks containing a stand with racks and

20 guides, fixed and movable calipers with knives fixed on them, a power cylinder and a scissors drive, the fixed caliper is made in the form of a console mounted on the frame, the guides for the movable caliper are made in the form of Open grooves located opposite the fixed caliper knife, at the same time the motionless support is supplied

30 removable guide inserts for

limiting the movement of the rolling slide.

Figure 1 shows the scissors, a general view; in FIG. 2, the same front view in FIG. 3 is a section A-A in FIG. figure 4 - section bb in figure 2.

The hydraulic swinging shears consist of a bed of 1 H-about 6 different shapes. The crossbar 2 of the frame cantilevered is located in relation to the uprights 3 and is an upper fixed caliper with an upper knife 4. The lower movable caliper 5 is made in the form of a frame and covers a cantilever cross-piece 2 of the bed 1. The lower caliper has a lower knife 6. 7-10, which cooperate with the open grooves of the guides 11 and 12, which are made on the front and inner surfaces of the uprights 3 of the bed 1. The guides 11 are located opposite the upper knife 4 of the fixed support. The lower bars 7 are located at a certain amount a below the cutting edge 13 of the lower knife 6. G opposite side from the pillars 3 the lower caliper 5 is bounded by removable guide bars 14 fixed to the cantilever crossbar 2. The working hydraulic cylinder 15 and the cylinder 16 of the clamp are embedded in the cross bar 2 of the bed . In the upper part of the uprights 3, additional hydraulic cylinders 17 for returning the movable support 15 and trunnions 18 are fixed, on which the scissors are mounted with the aid of the uprights 19 to perform a swinging motion. Scissors are equipped with a hydraulic cylinder 20 drive them swing.

By filling the stationary caliper 2 with a cantilever with respect to the uprights 3 of the bed 1 and making the guides for the movable caliper 5 open grooves, it is possible to arrange the uprights 3 in almost the same dimension with the frame of the movable caliper 5, which in turn provides the minimum size B across width scissors.

When repairing scissors, it suffices to remove the guide bar 14 and dismantle the movable support 5, remove the stationary fixed support 2 from the cantilever. In this case, there is free access to the working hydraulic cylinder 15 and the sliding support of the movable support.

In addition, since the guides on the uprights of the bed are made open, they have free access from the outside of the scissors and it is possible to change the slats 7-10 without removing the movable caliper 5.

Scissors work as follows.

First, the swing actuator hydraulic cylinder 20 is turned on, and the scissors begin to move in the direction of movement of the workpiece being cut 21. Then the working hydraulic cylinder 15 is turned on, the movable support rises up and the workpiece cuts between the lower and upper blades 6 and 4. In this case, the lower slats 7 located below the cutting edge 13 of the lower knife 6, then the thrust force

0 P, which occurs when cutting, is located between the lower and upper bars 7 and 8, presses the caliper 5 to the guide 11, without causing it to tilt. Due to this, removable rails

5 straps 14 do not perceive the forces arising from the cutting, and the durability of the planks 7 and 8 increases.

The cylinder 16 of the clamp is under pressure and holds the cut part of the workpiece on the bottom slide. After the cut is made, the return cylinders 17 provide for an accelerated lowering of the caliper 5. After the knives have been opened, the hydraulic cylinder 20 at 5 turns the scissors back to its original position.

Thus, the proposed design of scissors provides a simplified design and improves the conditions for their repair. In addition, it is possible to use scissors on a multi-thread caster. According to preliminary data, the economic effect from the use of scissors is 50000 thousand rubles. on one caster.

Claims (1)

1.NIIINFORMTYAZHMASH, 1-73-9. M., 1973. 2. Drawings of Uralmashzavod  56.00224, INN. No. 7983, 1964 (prototype). / K n / 5