DE1926561U - SCISSORS FOR CONTINUOUS CUTTING OF MOVING ROLLED MATERIAL IN ANY LENGTH. - Google Patents

Description

Hoestemberghe & Klütsch G.m.b.H., Saarlouis

"Scissors for continuously cutting things in motion Rolled stock in any length "

Shears for dividing rolling stock in motion in any length are known per se. You leave, however a change in the cutting length of the rolling stock is only proportionate low limits.

The innovation concerns rotating scissors, which are easier to use Design and good cutting effect from a minimum length unlimited cutting lengths of the rolled material are generated. The scissors according to the innovation are characterized in that as Control elements for the desired cutting lengths two cranks moved rockers are used, which the scissors knives Grant movement in the direction of the rolling stock. Through Adjustment of the points of application of the connecting rods on the swing arms, which can be done in a simple way electromechanically via a cardan shaft and a threaded spindle, If the end point of the swing arm experiences a more or less large deflection, which determines the cutting length of the rolled material. There

Interest payable

delivered to the Austrian government

Patent office,

the speed of the end of the swing arm during the cutting process equal to the rolling stock speed and this in turn is the circumferential speed of the crank times _, runs continuously

The length L «d χ / / r rend of a crank rotation, that is, a back and forth movement of the rocker. χ - through the scissors. Here, d is the diameter of the crank, R is the distance between the end point of the rocker and its pivot points, and r is the variable distance between the point of application of the connecting rods and the pivot point of the rocker. Conversely, with a control option from r max. To r min. = 2: 1, there is a possibility of changing the length by 1: 2 with one turn of the crank.

To also get any desired length over L 3 d χ // χ -. to cut

X * IQl Q. ·

to be able to, the knives are only brought into the cutting position after a desired number of turns of the cranks. In this way, with a control range from r max. To r min. = 2: 1 when cutting after 1, 2, 4, 8 etc. crank turns, all desired cutting lengths can be achieved over L == d χ //.χ - .

The required speed of the cranks (same number of Back and forth movements of the wings) at a certain

V x 60 r

good speed is η = -: / 53T- ?? ' where ü in linear

et x // κ

Function of r appears so that —z- = ——. The required The speed of the cranks can therefore automatically depend on the respective distance of the point of application of the connecting rods from the pivot point of the swing arm, for example, by

activity of a potentiometer, while variable Rolling stock speed is only an additional one The speed change is linear as a function of this speed.

In the drawing, an embodiment of the innovation is shown in 2 figures. The two cranks 1 drive with their Crank rods 2, the rockers 3, on which the threaded spindles 4 attack, to which the shafts 5 are hinged. the Swings 3 give the shear blades the movement in the direction of the rolling stock via the rods 6. The scissor knife carrier 7 are driven in the cutting direction by the cranks 8,9 via the rods 10,11,12. By holding the lever 16 and thus the rods 15,18 by the electromagnet 17 in their upper position kinks the linkage 11,12,13 »1 ^ · while move the cranks 8,9 into the cutting position so that the Knife cannot get into its cutting position (Big. II). the The cutting position of the knives is achieved after any desired number of crank turns in that the electromagnet 17> which is controlled by a copy mechanism sitting on one of the shafts of the cranks 1 in connection with an electronic counter is, the lever 16 in the opposite position of the cutting position of the cranks 8.9 releases. The buckling the linkage is thereby avoided (Fig. i). Due to the synchronism of the cranks 8,9 is over that of the knife carriers and the bars 10.11,13,1 ^ formed parallelograms during the course of the cut an exact parallel position of the knife

guaranteed to each other, which is particularly useful for cutting profiles that require a larger cross-section of the knife, necessary is. The rods 13 »I ^ are designed so that they can only bend to one side. Their horizontal position during the course of the cut is determined by the weight of the Lever 16 and the rod 18 conditionally. After the cut has been made, the lever 16 is returned to its position by the electromagnet 17 held in the upper position. The J & urbeln 8,9 stand over gears with the cranks 1 in connection and can have the same or twice the speed as this.

Claims (3)

RA-503 079-2if. 9.65 Aktz.s H 43 108 / 49C Gbm protection claims 1.) Scissors for continuously cutting rolling stock in motion into any length, characterized in that the knife carriers (7) are given the movement in the direction of the rolling stock by two rockers (3) driven by cranks (l), the points of attack the connecting rods (2) can be adjusted on the rocker arms. 2.) Scissors according to claim 1, characterized in that the rockers (3) are provided with threaded spindles (k) which are connected to cardan shafts (5). 3.) Scissors according to claims 1 and 2, characterized in that the knife carrier (7) in the cutting direction by cranks (8,9) are driven via a parallelogram linkage (10-14). k.) Scissors according to claims 1 to 3> characterized in that the knife carriers (7) driving cranks (8, 9) are connected to the cranks (1) driving the rockers (3) by toothed wheels.