DE1025369B - Insertion device for roll bars - Google Patents

Description

Insertion device for rolling bars In fine iron rolling mills with extensive rolling program has always been aimed at, guide devices, to use for the rolling stock, even when roughing different cross-sections; Introduce the rolling stock properly into the caliber of the rolls without having to change the program time-consuming modifications are required.

Various paths have already been taken to achieve this goal. For example, a guide is known in which the guide jaws in three directions: can be adjusted. For this purpose, the guide jaws are in a housing stored, which can tverden rotated by a small amount about its longitudinal axis. The guide jaws are through wedges; against each other. One: longitudinal shift the housing is brought about by a gear drive. With this guide you can various upright, oval cross-sections. will. To leaders. of rectangular or square cross-sections, however, the guide jaws would have to be replaced will. Due to this, when changing the program, round to square or rectangle must be used as the end product, every second guide can be replaced. So the conversion time is much too high when changing programs. Another disadvantage is that the guide jaws are rigidly mounted., whereby one is forced to their distance from one another from the outset to be chosen so large that the rod to be guided even with certain cross-section fluctuations, the! can hardly be switched off, let yourself go through the guide safely: so that an exact insertion of the rod into the caliber is hardly given.

It is known to address these disadvantages as guide elements in holders to use stored rollers. The holders are attached to the guide box by means of: Screws against each other adjustable and resilient, so that once different large cross-sections can be performed. can. and the roles: right from the start, adjustable are that cross-sectional fluctuations no longer play a role.

However, this device is still the main disadvantage peculiar that for guiding rolling stock with, for example, rectangular and oval cross-sections special guide roles must be available. In addition, when changing programs from Rund to Ouadrat; or a rectangle as the end product, also with every second tour the rollers are to be exchanged, these being pulled out of the roller chute for this purpose: must be, d. H. the leadership must be dismantled:

The time required is therefore also when using this guide Much too high for the conversion of the roller train at Pro: programwechsel.sel. Any loss of time which inevitably causes a loss of production, but must especially today's powerful. Roller mills., The investment costs of which are known to be very high are high, must be avoided at all costs. To achieve this goal with the least amount of effort. Means to achieve., Is proposed according to the invention, as guide members for (Las Rolling stock four in a rectangle, preferably in a square, arranged guide rollers with after Outside. beefy circumference and to use them on one in the guide box. about its Longitudinal axis in. Stages from 45 to 360 ° pivotable to insert piece attach. The guide rollers then each guide square or rectangular rolling stock on one side and oval or similar rolling stock in pairs on the two curved sides. For guiding: rolling stock with rectangular or square and oval cross-sections This guide means therefore no longer need to be exchanged .. At the transition From the oua: drat to the oval, the guide rollers only become. swiveled by 45 °. Need it then only the guide jaws have to be replaced without the guide needs to be pulled out of the nip. As a result, not only that Reconstruction times are shortened and thus unnecessary production downtime is avoided, but the storage for the guides is also significantly simplified. Egg Another significant advantage results from the fact that the guide roller below in case of wear can be brought upwards or the one on the right on the left :. Side can be brought and vice versa. This applies to the, guide rollers as well for di-e guide jaws.

The: guide jaws. are according to a further merlunal of the invention fastened to the insert piece, lba.r ', which serves as a guide housing, where its. Opening towards the: idler pulleys is tapered to and between the opposite surfaces of the guide jaws spacers of different Thickness, can be used.

The insert piece, which is round on the outside, is also advantageously round, guide piece od by a bayonet lock are arranged in a 45 ° division on the guide box or insert piece. This means that in cinfac: her way - it reaches that after turning the insert in the guide box automatically the correct position according to the 45 ° division is reached so that t: no need for precise readjustment.

The guide rollers or guide members are expediently each at the end of a double lever which, according to the invention, is pivotably mounted on the insert. Before erna and behind the pivot axis of the double lever, adjusting screws are provided according to the invention, through which the position of the double lever to each other can be determined, with between the. the guide rollers. springs are provided for lying screws and the associated levers in order to protect the guide rollers from overstressing in the case of unevenly thick rolling stock and to ensure that the rolling stock is always guided tightly.

An exemplary embodiment according to the invention is shown schematically in the drawing shown. It shows Fig. 1 an overall side view, partially in section, Fig. 2 a view in direction b ', seen from the insertion side, FIG. 3 a View in direction b1 ', seen from the roll gap, used for square iron. (Position X), Fig.4 the guide corresponding to Fig, 2 in position 'I' and Fig. 5 the Guide according to Fig. 3 also in position I ° in use when rolling of an oval cross-section.

The: work rolls are indicated with 1, 2 represents a: known Feed chute, feed pipe or the like, for that rolling stock. With 3 is the round housing of the guide box, in which the. Also round insert 4 is arranged. It is with bayonet-like seat braids 5 on locking members 6 of the housing 3 established. The locking members 6 are arranged at 45 °, so that the insert 4 can be rotated in paragraphs of 45 ° with respect to the housing 3.

With 7 guide jaws are designated, which by wedges 8 in. The conical Insert 4 can be determined. Depending on the strength of the intermediate layers 7a, the Guide jaws 7 protrude more or less deeply into the insert pieces 4. Through this their mutual distance is changed, so that it is easily possible, accordingly the choice of intermediate layers, 7a the: guide jaws 7 to the respective thickness of the rolled material a, zuedlen.

The insert 4 carries approaches 4 a. with bolt 4 b, on which double lever 9 are pivotally mounted, which carry guide rollers 10 at their Qinen end. The guide rollers 10 have an outwardly convex unifang. With 11 and 12 adjusting screws are designated to adjust the double levers 9 and. so that the guide rollers 10 on the respective Roll thickness. 13 is connected between the Stellschraulx 12 and the lever 9 Spring 1rz7zeiclinet, which prevents overloads and ensures that the guide rollers 10 imm: r with a certain pressure to the @@ 'alzgut and this securely to lead.

The comparison, especially the figure b. 3 and 5, leaves without further ado zrlcannen, because: ß without replacement, simply by turning the insert 4 in the Housing 3 at 45 'the same guide rollers 10 both for proper guidance square rolling stock 17 as well as rolling stock 17 with an oval or similar cross-section, after replacing the corresponding guide jaws, can be used, Any Roll I can be set and readjusted on its own.

The establishment, according to the invention, is characterized by its functional nature Structure and its versatile application options for a wide variety of rolling stock cross-sections without time-consuming reconstruction work being necessary.

Claims (1)

PATENT CLAIMS: 1. Insertion device for rolling rods into the roll caliber in fine iron and wire rolling mills for guiding oval and square cuts with adjustable in a guide box, swiveling around their longitudinal axis and extending guide jaws and these downstream guide rollers for the rolling stock, thereby characterized in that four in a rectangle, preferably (square, arranged guide rollers (10) with an outwardly convex circumference are provided and these are attached to an insert (4) arranged in the guide box (3) so that it can pivot about its longitudinal axis in steps of 45 to 360 ° The device according to claim 1, characterized in that the guide jaws (7) are exchangeably attached to the insert piece (4) , guide mounted in a guide housing, characterized in that the guide housing; through the egg nsatzstück (4) is formed and the opening of the insert is tapered to the guide rollers (10) and that between the opposite surfaces of the guide jaws (7). Spacers (7a.) Of different thicknesses can be used. 4. Apparatus according to claim 2 or 3, characterized in that the external round insert, (4) or in the also circular guide box (3) by a bayonet lock (5, 6). Like. Is genalten, the locking members (6) in 45 ° -Te, ilung are arranged on the guide box (3) or insert (4). 5. Device according to the claims. 1. 2, 3 and 4 with pivotable double levers arranged at the ends guide rollers, characterized in that the double helix) el (9) are attached to the insert (4). 6. Device according to claims 1, 2, 3, 4 and 5, in which the position of the double lever is set by adjusting screws, characterized in that before and behind the pivot axis (4b ') of the double lever adjusting screws (11, 12) and springs (13) are provided between the adjusting screws (12) to be located on the guide rollers (10) and the associated levers. Considered publications: German Patent Specifications No. 891 534, 284 912; USA. Patent No. 1968 670, 2312804, 2335334. French patents nos. 1 014 813, 1032686.