SU564068A1 - Mill for rolling variable section profiles - Google Patents

Description

one

The invention relates to the processing of metals by pressure, in particular, to the construction of rolling mills, and can be used in machine building for rolling variable section profiles.

Known is the mill dp rolling profiles of variable cross section with a variable distance between the rollers and with a feed mechanism consisting of cams, anvil and carriage, operating through an electromagnethob connected through a crank arranged. the gear and the gear coupling with vapk cells.

This flock is closest to the described invention f 1.

A disadvantage of the known mill is the active design of the feed mechanism, which does not provide sufficient accuracy for feeding the blanks into the mouth of the sack.

The chain of the invention is to simplify the design of the mill and improve the accuracy of the flow of depot.

This is achieved by the fact that the proposed mill for rolling variable section profiles is equipped with a mechanism for adjusting the height of the position of the axis of the pusher

filled in the form of a lever, one end of which is fixed and the second uiapnirny is connected with the drive of a vertical cushion of the roll, and connected to the prytyr lever the plane of which the pair of pusher axes pushes, and two racks connected to the slab and forming the latter a hinge paralpepogram, with mechanisms for feeding the blank into the wapes of the equipment on the plate. The link of the lever with the plate is in the form of a spring-loaded rod installed in the middle of the lever and a sleeve mounted on the plate telescopically grasping the rod.

Sgak is also provided with a plate lifting limiter, made in the form of a finger stitch.

The drawing shows schematically the proposed rolling mill,

Plate 1 is pivotally connected to two levers 2, which are also connected to fixed brackets 3.

The rod 4 with its lower end of the pivot is connected in the center of the lever 5, the ends of which are pivotally connected to the fixed frame

bracket 6 and bracket 7, mounted on the movable yoke 8 At the upper end of the rod 4 has an adjustable topkatep 9,

The spring 10 presses the sleeve 11 through which the rod 4 passes. The sleeve 11 is fastened with a fork 12 pivotally connected to the fork 13. The latter is fixed on the plate 1 on which the bracket 14 is also attached. The earring 15 is pivotally connected to the bracket 14 and has the ability to expose on height relative to it.

Finger 16 slotted bracket

17, pivotally connected with an earring 15.

Plate 1 has two brackets

18, through which the rod 19 passes, connected by the carrier 20 to the rod of the pneumatic cylinder 21. On the rod 19, the pusher 22 is fixed to the possibility of readjustment. Rollers 23 are mounted on the plate 1. Adjustable side bars (not shown) create direction for the feed material to be rolled.

On the cutter 24 of the working stand 25, the bearing housings of the roll 26 are fixed, the roll bearing housings 27 are fixed on the fixed case 28, four columns 29 pass through the sleeves, their upper ends are fixed in the traverse 24. and the lower ends are fixed in the traverse 8,

On. The fixed housing 28 is fitted with a hydraulic cylinder 30, the rod of which is connected to the crosspiece 8. The cavities of the hydraulic cylinder 30 are connected to the control spool by pipelines.

The camp works as follows. Starting position when rolling parts like machine fasteners - adjusting, wedges. The probe of the mechanism of vigilance (not shown) is located in the throat of the rolls mounted on a certain size of the rolled product, the control spool contacts the program Fist by its maximum size (not shown).

Spring 1O through jugulka C, forks 12 and 13 hold plate 1 in the upper position, bounded by finger 16 in the groove of bracket 17.

The pusher 9 is in contact with the sleeve 11.

On command, the pneumatic cylinder 21 is actuated; the rod, and, therefore, through the rod 19, the pusher 22 supplies the workpiece to the rolls 26 and 27, which begin to roll the workpiece.

The exit end of the rolled billet pushes the tip of the tracking mechanism, the programmed cam starts to rotate, interacting with the control spool, resulting in a change in the amount of oil supplied in the cavity of the hydraulic cylinder 30 and, accordingly, the position of its rod, which is connected to the crosshead 8, changes.

Due to the lowering of the rod of the hydraulic cylinder 30, the yoke 8 is lowered and fastened to it, through the columns 29 of the yoke 24 with the work roller 26 installed on it. Due to this, during the rolling process, the section of the rolled billet smoothly varies in length.

Together with the crosspiece 8, the bracket 7 attached to it is lowered, causing the lever 5 to rotate relative to the fixed bracket 6,

The lever 5 t is not behind the cable 11 4, lowering it by an amount equal to half the course of lowering the roll 26, the rod 4 by the pusher 9 presses on the sleeve C. a bracket 14 with an earring 15 and a finger 16, which moves in 1taza of the bracket 17,

After the end of rolling, the urj-n tracking mechanism returns to its original position, the software cam is turned in the opposite direction, and the work rolls 26 and 27 are moved to the initial position. The yoke 8 is raised, raised through the bracket 7 and the lever 5, the rod 4 with the pusher 9,

The spring 10, pressing on the sleeve 11, raises the plate 1 with the roller 23 to its original position. Finger 16 Sergie 15 ups in the upper part of the groove of the bracket 17,

Pneumatic cylinder 21 retracts the rod 19 with the pusher 22 to its original position,

The mill is ready to re-pass the workpiece.

The introduction of the rolling mill provides an opportunity to create a centralized site for the manufacture of fastening and adjusting machine wedges and slats.

A preliminary calculation showed that the introduction of the mill would, by increasing the utilization rate of the metal and a corresponding reduction in the labor intensity of machining, obtain an annual economic effect in the amount of 221.8OO rubles.

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Claims (3)

Invention Formula The mill for rolling profiles of variable cross section containing the rolls installed in the frame, the rotational drive of the shaft a drive for reciprocating vertical movement of one of the rolls, a device for feeding the workpiece to the rolls, having a pusher and kinematically coupled with a drive of rotation of the rolls, characterized in that, in order to simplify the design and increase the accuracy of the product feed, it is equipped with a mechanism for adjusting the height of the position of the axis of the pusher, made in the form of a lever, one end of which is fixed and the other is pivotally connected with the drive of the vertical movement of the roll connected to the plate lever, the plane cat The pitch is parallel to the axis of the pusher, and two pillars hinged to the plate and forming the hinge parallelogram with the latter the mechanism for feeding the workpiece to the rolls is mounted on a plate. 2. The stator according to claim 1, wherein the link of the lever to the plate is made in the form of a spring-loaded rod in the middle of the levers and a sleeve mounted on the plate that telescopically surrounds the rod. 3. Stan on PP, 1 and 2, that is, with the fact that it is equipped with a limiter of the slab lift, made of finger stitches. Is-1 information taken into account during the examination 1. Copyright certificate SSSG number 116618, cl. B 21 H 8 / CO, 195 ".