SU902995A1 - Die for cutting rolled stock - Google Patents

Description

The invention relates to the field of blank production of machine-building plants and can be used when cutting rolled products into blanks.

Known stamp for cutting rolled products containing upper and lower plates, mounted on the lower plate of the body, movable and fixed knives with cutting elements and mechanisms for clamping the cut steel, levers 1.

A disadvantage of the known stamp is that in order to provide the required clamping force of the cut-off part of the rolled product, an additional power device is required, which requires an increase in the technological effort of the press, which leads to additional energy costs.

The aim of the invention is to simplify the design of the stamp and reduce energy costs by eliminating additional force for clamping the cut part of the car.

To this end, in the die for cutting steel, containing upper and lower plates, mounted on the bottom plate, movable and fixed knives with cutting elements and mechanisms for clamping the cut steel, one of which is installed with the possibility of interaction with the movable knife clamp, is provided with

10 main and additional pivot arms, the main synga of the movable knife mechanism is mounted on the body, an additional lever is mounted on the main lever

15 and is connected with the upper plate, while the cutting element of the movable knife is mounted on the main lever, and the clamp is on the additional lever of the clamping mechanism.

20

FIG. 1 shows a general view of a die for cutting steel, - a section; in fig; 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one

Stamp for cutting rolled products. Contains

25 upper plate 1 connected to the press ram and the lower plate 2 fixed on the press frame, on which case 3 is mounted. The stationary knife 4 is equipped with a clamping mechanism

Claims (1)

30 of the main part of the rental, made in the form of clamps 5, which transfer the clamping force from the actuator b with the help of t g 7. The wedge 8 is fixed on the upper plate, keeping the slider 9 in the retracted state. A guide 10 for the rolled steel is mounted on the housing 3. The clamping mechanism of the cut-off part of the rolling stock consists of a lever 11 mounted on the housing on the axis 12 and a lever 13 connected to the lever 11 with a common axis 14, and through the fork 15, the support 16c with the upper plate through the axes 17 and 18, a movable knife is mounted on the lever 11 19, on the lever 13 — the clamp 20, forming with a movable knife a cavity for accommodating the rolled metal. To remove the workpiece from the clamp 20, a spring-loaded ejector 21 is installed in it, which cooperates with a stop 2 2 fixed on the bottom plate 2. On the lever 11 a stop 23 limiting the supply of rolled steel is mounted. For stable operation of the levers, guide stand 24 is fixed on plate 2. In addition, spring-loaded pushers 25 are located in bottom plate 2, which release the rolled stock from the clamp, and stop 27 is made in guide stand 26, limiting the rotation of lever 11, the device works as follows . The rolling is fed through guide 10 into the space between the stationary knife 4 and the clamps 5, and further between the oak-knob 19 and at this moment the clamped-off 20 to the stop 23. When the press slides down, the plate 1 with the wedges 8 and the support 16 begins move also down. . Upon further downward movement, the wedge 8 ceases to hold the slider 9 in the retracted state and it rushes to the center, transferring the force of the actuator 6 to the clamps 5, thereby selecting the gap between the working profile of the fixed knife 4, the clamps 5 and the rolled section, and also its radial clamp. When the top plate moves down, it tells the displacement of pin 13 via lever 6 and fork 15. Lever 1 starts spinning around axis 14 until - complete clamping of clamp 20 and movable knife 19 on hire, At the moment when the clamp size of the assortment reaches § , the separation of the workpiece from the mix will occur. where PCP is the shear force; a and b are the arms of the lever 13. By changing the arms of the lever, the clamping amount of the cut piece can be changed. During the reverse course of the upper plate 1, the wedge 8 is up, I act with my bevels on the sliders 9, they are retracted to their original position, and the clamps 5 under the action of the trill of gels, 25 are lifted and released. from the clamp hire for its submission again. Upon further upward movement, the lever 11 meets with the stop 27 and stops, and the lever 13 begins to rotate around the axis 14. At the moment when the top plate approaches its upper position, the ejector 21 abuts against the stop 22 and removes the workpiece from the clamp 20. From this moment The device is ready for a new working cycle. The application of the described invention will simplify the design of the stamp and reduce energy costs by eliminating the additional force for clamping the cut-off part of the car. Claim for cutting rolled products containing upper and lower plates, mounted on the bottom plate, movable and fixed knives with cutting elements and clamping mechanisms of the rolled steel, one of which, installed with the ability to interact with the movable knife clamp, is equipped with primary and secondary turning leverage, in order to simplify the design and reduce. energy costs due to the exclusion of additional force for clamping the cut-off part of the car, the main lever of the movable knife clamping mechanism is mounted on the body, the additional lever is mounted on the main lever and connected to the upper plate, while the cutting element of the movable knife is mounted on the main lever and the clamp is on the additional clamp mechanism mechanism. Sources of information taken into account in the examination 1. USSR author's certificate 562391, cl. B 23 D 23/00, 04/01/76. fj