DE305929C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

; ■ The invention relates to a rolling mill ■ for finishing rolling, of railway wheel tires with 'two vertical rollers, which the wheel tire. enclose profile: and two horizontal rollers for post-processing. In such rolling mills it has hitherto been customary to let the parts of the two vertical rolls surrounding the profile intermesh so that the profile lies completely in one roll and on the inner surface through the recess _; ; .that; roller penetrated part of the other ■ vertical roller is limited. It is also customary here for the inner vertical roller to be displaceable, but to arrange the "outer" firmly, so that the inner roller "represents a stamp", so to speak _{, "the";} pressing the tire compound into a die formed by the outer roller. This results in sensitive grievances. First, flat surfaces of the tire are formed on the upper and lower 20. Indentations or ■ ..; , Cavities);,. Probably because the: pressure during rolling does not penetrate evenly into the interior of the tire compound, as it does in other cases. extensive press dies observed 25. is; ' Furthermore, the horizontal flat surfaces of the caliber of the outer roller are very. fast, worn out because an edge of the inner roller is inir. The caliber of the outer roller is never completely; is to be avoided. and because, in order to limit the cavities mentioned above as much as possible, - the tire -, mjt larger. Force must be pressed into the ■ caliber of the outer roller. Nonetheless, the cavities still show themselves, which are all the more disturbing as ₍ they are subject to subsequent processing, e.g.

due to the well-known dare fencing rollers, difficult to access. $ ,, · .. ^. >>ν; ·. ' . According to the invention, these deficiencies are eliminated in that the vertical rollers each encompass only a part of the tire profile and do not touch ^one another in the working position, while the horizontal rollers are designed as compensating pressure rollers: around the; through the. Distance between; to push back the protrusions created by the two vertical rollers. Since it is no longer a question of the whole tire mass in) the caliber of the outer roller. to press in, .can iJK '. Reversal of the usual device · the outer vertical, · ■■ right roller against the stationary one; ii'V inner: vertical roller be verschiebbarieirigeriehtet ';"■'.. which the Gesamtahofdriung ^simplified;; is. '' ■■■, ·.". ' ^{/ A} ::. ;;' ■ ■ - . ■. "'

Since the profile of the tire is partly in the inner and partly in the outer vertical roller, but partly - ;; at all: is not detected; so. The cavities on: the flat surfaces of the wheel tire cannot arise. The pressure acts, on both sides, evenly, in such a way that the material of the tire profile roughly in the middle of the flat surfaces, where it otherwise tends to indent, is driven outwards _{is:; and;..} here; even forms small beads needs the roller pressure · are not gfsteigertzuT excessively -da; is not to fear the formation of cavities Since the two rollers; .not. into one another: access, so the .inevitable roll edges cannot - cause. increased. wear on the flat caliber surfaces .;.

Claims (1)

that has the tire profile not detected in the middle Opportunity to easily adjust to small fluctuations, so too does the tire on the other hand, in the case of Kanturigen of the rollers, the Ka- ■ · Does not affect the surface. The profile of the tire is when it comes from the vertical rollers emerges, not yet finished, since it is mainly · in the middle of the flat Has bead-like elevations surfaces. The ίο final profiling, especially by depressing these bead-like elevations, takes place by the driven horizontal pressure rollers. Such a rolling mill Ί5 is illustrated in the drawings. It will be generally described below sake of understanding, also in the parts not immediate, bear related to the ^v invention. Fig. Ι shows an elevation of the entire WaIz work, ' ¹ V ■ ^a Fig. 2 is a side view,,. , Fig. 3 the plan, and ■ · ■. Fig. 4 is a vertical section through the '- .. storage of the horizontal rollers.
■■■ j and 2 are the two vertical rollers which each encompass only part of the profile and do not touch each other in the working position (see also FIG. 3 in particular). 3 and 4 are lateral ■ '. ■,.; - ^: leadership roles. 5 and 6 are the two horizontal rollers, which are designed as compensating pressure rollers in order to push back the projections of the tire profile created by the distance between the two vertical rollers 1 and 2. All the rollers are driven from the main drive shaft 7 in the following manner. The roller 2 is driven by a pair of bevel gears 8, the roller 1 is rotated by a pair of spur gears 9. The inner roller 2 sits on the fixed vertical shaft 10, while the outer . Roller ι slidably mounted "." A cardan joint 11 is connected to its drive shaft. The roller itself is between an upper one ;, and a lower slide 12, 13 mounted. The two carriages are guided in their guides by spindles 14, 15 by means of a worm drive ■.;. emotional. ...; ■ ■■ ; From, the main shaft 7 is · also the loading. movement of the horizontal rollers 5 and 6, namely via the shafts 16 and 17 derived. The latter drives a grooved or square shaft 19 by means of the bevel gear pair ί8, which lies horizontally in the guide bed 20 of the stand 21 for the two rollers 5 and ^V 6. These . 55 shaft drives by means of interposed spur gears 22 the two horizontal rollers 5 and 6, which are mounted on the free ends of their in the stand 21; Waves 23, -24 sit. The whole stand 21 with those stored in it Rollers 5 and 6 can be moved in the guide bed 20, so that tires of any . Diameter, rolled. When shifting the shaft 19 goes with. The shift itself is caused by a rack 25, the αμΓΟΓΐ a pinion from the shaft 26 is driven by a motor. The shafts 23 and .24 of the horizontal rollers 5 and 6 are adjustable in height, namely "so that the rollers can either both be moved simultaneously against the drum and away from it or each individually. The device for adjusting the Rollers can best be seen in Fig. 4. The four bearings are adjusted by means of the four vertical screw spindles 27, 28, 29, 30, which are simultaneously driven by a handwheel 31 by means of worm drives upper half right-hand thread, in the lower half left-hand thread or vice versa. While the lower bearing traverse 32 is moved up and down directly by the screw spindle]! The crossbeam can be coupled or uncoupled from it in such a way that the bushings in the crossbeam rotate with the spindle ; ^;: The connection of the bushes with the spindle is done by sliding slot wedges 36. If the bushings 34 are coupled to the spindles by the wedges 36 and the pins 35 are loosened, the bushes move loosely in the crossbeam. in contrast, if the cans ⁱⁱⁱ with the traverse connected wobei- ¹ pins 35 inserted and the slot wedges are pulled down 36, it follows the "Traverse upon rotation of the spindle, depending on the rotation direction, up or down. in this way, ^1" you can place the two rollers 5 and 6 on and against the wheel tire as you wish. ^; · "■ '■■ Patent Claim: _; ■. ■■ .- ,. ■ ,,:, Rolling mill for the ^{finish rolling of s} iron railway tires with two vertical rollers which enclose the tire profile; and two horizontal rollers for post-processing, characterized in that the vertical rollers (1, 2) each encompass only part of the ·· "profile and do not touch in the working position, while the horizontal rollers (5, than- ^6): - ^j: equalizing pressure rolls are formed; the senkrech- by the distance between the two ^1-th rolling the resulting projections to-: back compress .; ■■ * ■■ '* ■' ■ '■ - ■ '''■' - ' - ^: - ~' - ■ ^: -'- For this purpose 2 sheets of drawings.