DE7904385U1 - Cooling bed for transverse conveying of rolled goods, especially pipes or round cross-sections - Google Patents

Description

PATENT ATTORNEYS F.W. HEMMERICH JGERQ MÜLLER*· Ct*GROSSE · F. POLLMEIER

6 February 1979 - 1 - 8.2658/snz-fr

SCHLOEMANN-SIEMAG AKTIENGESELLSCHAFT, 4000 Düsseldorf 1

Cooling bed for transverse conveying of rolled goods, especially pipes or round cross-sections

The invention relates to a cooling bed for the transverse conveying of rolled material, in particular pipes or round cross-sections, consisting of two groups of toothed rakes that are dependent on one another and move in opposite directions to one another, each of which is driven by a cam disk drive with cam disks arranged 180° apart from one another, and fixed rakes, whereby the rolled material to be transversely conveyed executes a rolling movement along the fixed rakes.

The starting point is the state of the art known from DE-PS 1249800 in accordance with the generic term. In this device, the rolled material, in particular pipes, is moved onto the fixed, untoothed rake while rolling continuously during the transverse conveying movement on the cooling bed.

During this movement, the rolling stock is guided along the rising flanks of the two groups of movable rakes, which move alternately in a circular or elliptical movement. The device has the disadvantage that a relative movement occurs on the peripheral surfaces and the tooth flanks of the movable rakes that guide the rolling stock, which results in the formation of grooves and thus a shock.

PATENT ATTORNEYS F.W. HEMMERICH iGERQ MILLER'· DJ GROSJE · F. POLLMEIER

6 February 1979 - 2 - 8.2658/snz-fr

ing treatment of the surface of the rolled stock.

Furthermore, DE-OS 2506896 discloses a rake cooling bed which consists of fixed, toothed rakes and movable rakes which can be raised and lowered in an elliptical movement. During the transverse conveying movement, the rolled material is guided in a rolling movement in the area of the tooth flanks of the fixed rakes, but this is interrupted in the area above the tooth tips of the fixed rakes and during the rotation time on the lower half-ellipse. In addition, a relative movement between the peripheral surfaces of the rolled material and the effective tooth flanks of the fixed and movable rakes is unavoidable. The path for the rolling movement along the tooth flanks of the fixed rakes also becomes smaller and smaller as the diameter of the rolled material increases, while the lifting path in the area of the tooth tips increases accordingly due to the larger elliptical lifting movement of the movable rakes and thus the proportion of the rolling movement during a cycle sequence becomes smaller and smaller. Here too, scoring on the peripheral surfaces of the rolled material cannot be prevented, so that transverse transport that protects the surface is not possible.

The object of the invention is to achieve uninterrupted rolling of the rolling stock over the entire transverse conveyor path along the cooling bed without relative movement with respect to the movable and fixed rakes and, in addition, a considerable extension of the rolling path, whereby equally long rolling paths are created for all rolling stock diameters and the conversion of the movable rakes to other rolling stock dimensions is eliminated, and at the same time to simplify the construction of the cooling bed.

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■ PATENT ATTORNEYS F.W. HEMMERlCH { GEfttJ Mt)LLtR*- CL GROSSE · F. POLLMEIER

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6 February 1979 - 3 - 8.2658/snz-fr

To solve the problem, it is proposed that the transverse conveying movement of the rolling stock takes place over the tooth flanks of fixed, toothed rakes without relative movement to the rolling stock, in that the rolling stock is conveyed in the conveying direction in the area of the rising tooth flanks of the fixed rakes up to the tooth tip of the fixed rakes by means of a group of movable rakes and in the area of the falling tooth flanks of the fixed rakes by means of another group of movable rakes with the same tooth pitch as the fixed rakes. The tooth flanks of the groups of movable rakes that carry out the rolling movement have an equal but oppositely directed inclination compared to the corresponding tooth flanks of the fixed rakes that receive the rolling stock, and the movement of the groups of movable rakes takes place in a lifting and lowering movement directed parallel to the apex center of the rakes.

In a further development of the invention, the rake teeth of the two groups of movable rakes are designed in opposite sawtooth shapes, with the tooth flanks that carry out the rolling movement extending over the length of the tooth pitch. The teeth of the fixed rakes are preferably designed symmetrically. The tooth tips of the two groups of movable rakes are preferably symmetrically offset to the tooth root of the fixed rakes, corresponding to the support surface of the largest round cross-section in their initial position below the conveying plane of the fixed rakes or congruent with it. The groups of movable rakes are guided in straight guides parallel to the apex center of the fixed rakes so that they can move up and down. The tooth flanks of the teeth of the fixed rakes are preferably designed symmetrically inclined to the tooth tip, with these forming an angle of at least

PATENT ATTORNEYS F.W. HEMMERl'fH ;GERD M£ILL€R·· D;. GROSSE · F. POLLMEIER

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February 6, 1979

8.2658/snz-fr

form 90°.

The advantage of such a structural design of the cooling bed is that the rolling path and thus the cooling distance of the rolled material is increased by up to 40%. The rolling movement of the rolled material from the intake to the discharge takes place continuously over the entire length of the cooling bed. As a result of the longer and continuous rolling path, the directional effect on the rolled material is significantly increased and thus optimal cooling conditions are created, so that the cooling bed can be kept shorter. The drive of the cooling bed is also cheaper as a result of the lifting and lowering movement taking place on a straight line in a vertical plane, which also means that the rake rate of the movable rakes per unit of time can be increased due to the elimination of the high acceleration forces. The rolling path of the different profile dimensions is always the same, so that there is no need to change the lifting movement of the movable rakes. This achieves simple control and no adjustment devices are required. The cooling bed can be operated in both cross-conveying directions. The mirror-image sawtooth design of the movable rakes results in manufacturing advantages and material savings for the manufacture of the rakes. Overall, this rake cooling bed achieves an optimal straightening and cooling effect and the desired surface-protecting transport of the rolled material.

An embodiment of the invention is shown in the drawing. It shows:

Fig. 1 the cooling bed in side view schematic,

Fig. 2 the cooling bed in front view schematically

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PATENT ATTORNEYS F.W. HEMMERIfH ■; GERC} MfJLLER·· D·, GROSpE · F. POLLMEIER

6 February 1979 - 5 - 8.2658/snz-fr

the section line 2-2,

Fig. 3 the sequence of the rolling movement of different profile cross-sections during the transverse conveying movement of the groups of movable rakes over the rising and falling flanks of a tooth of the fixed rakes with the groups of movable rakes in their lower starting length in principle and

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to 9 the sequence of the rolling movement over a tooth pitch of the fixed rakes in individual phases and the corresponding position of the groups of movable rakes in relation to the fixed rakes in principle.

In Fig. 1, 2 and 3, 1 denotes fixed, toothed rakes and 2 and 3 denote groups of movable, toothed rakes. The teeth 1 a of the fixed rakes 1 preferably have symmetrical tooth tips on both sides, the angle of which is at least 90°.

The tooth pitch of the teeth 2 a and 3 a of the groups of movable rakes 2 and 3 corresponds to the tooth pitch of the fixed rakes 1, but the rake teeth 2 a and 3 a are

2J- opposite sawtooth shape. In addition, the tooth tips of the teeth 2 a and 3 a of the groups of movable rakes 2 and 3 are arranged symmetrically to the tooth root of the teeth 1 a of the fixed rakes 1 on both sides in such a way that they form the support surface of the rolled material profile W to be conveyed transversely.

-_ with the largest profile cross-section or diameter. Preferably, the effective tooth flanks of the rake teeth 2 a and 3 a are designed in such a way that in their initial position they are aligned with the corresponding

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PATENT ATTORNEYS F.W. HEMMERIfH ','GER[J MfjLLeR·· D>/GR©SßE · F. POULMEIER

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6 February 1979 - 6 - 8.2658/snz-fr

corresponding rising or falling tooth flanks of the fixed rakes 1 are aligned or parallel to them and are laterally offset slightly below the tooth root of the fixed rakes 1 (cf. Fig. 3).
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The fixed screens 1 are mounted in a fixed position on a frame structure 4, 5 and 6, which is supported against the foundation F.

The movable rakes 2 and 3 are fastened in groups on supports 7 and 8 which run transversely to the conveying direction R and are arranged at a different height. The supports 7 are connected to lifting bars 9 and the supports 8 are connected to lifting bars 10, which are arranged below the conveying plane in the conveying direction R and form the group of movable rakes 2 and the group of movable rakes 3. The lifting bars 9 and 10 are held by lifting beams 11, 12 and the support bearings 15 and 13a with rollers 14 and 14a mounted therein so as to be able to rotate, with the rollers 14 and 14a being supported on pairs of cam disks 15, 15a and 16, 16a respectively. The cam disc pairs 15, 15 a and 16, 16 a are mounted on shafts 17, 18 running transversely to the conveying direction in a rotationally fixed manner, but the cam disc pairs 15, 15 a are arranged on the shafts 17, 18 offset by 180° to the cam disc pairs 16, 16 a. The shafts 17, 18 are driven by a motor 19 via gears 20, 21 in synchronism via shafts 22.

Straight guides 23 running parallel to the center of the apex of the fixed rake teeth 1a are arranged under the lifting beams 11, 12 to accommodate the guide rollers 24. The guide rollers 24 are mounted so that they can rotate in a support bearing 25 which is fixedly connected to the foundation.

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PATENT ATTORNEYS F.W. HEMMERI$H -,-GERO, MILLER · Dj'gr'0S|e · F. POLLMElER

6 February 1979 - 7 - 8. 2658/snz-fr

In Fig. 3 to 9, the rolling movement of the rolled stock W from two round profiles with different cross-sections is shown during rolling over a rake tooth 1 a of the fixed rake 1 by means of the two groups of movable rakes 2 and 3 in the conveying direction R. H denotes the stroke for the groups of movable rakes 2 and 3 for the lifting and lowering movement in the vertical plane. As can be seen from the drawings, the rolling movement of the rolled stock W on the rising tooth flank of the rake teeth 1 a of the fixed rake 1 takes place by means of the group of movable rakes 2, while the group of movable rakes 3 takes over the rolling movement of the rolled stock W on the falling tooth flank of the rake teeth 1 a of the fixed rake 1. As a result of the inclination of the tooth flanks of the movable rakes 2 and 3 in their effective transverse conveying sections being equal in size but opposite to the inclination of the fixed rakes 1 during the lifting and lowering movement along the tooth flanks of the fixed rakes 1, the rolling movement of the rolled stock profiles W during the transverse conveying V does not result in any relative movement that adversely affects the peripheral surfaces of the rolled stock W.

In Fig. 4, the rolling stock W is conveyed transversely by lifting the group of rakes 2 that can be raised and lowered in the direction of the tooth tip of the teeth 1 a of the fixed rakes 1 during the lifting movement H along the rising flank while rolling.

In Fig. 5, the movable rakes 2 are just before their upper end point of the lifting movement H, while the movable rakes 3 have already reached their upper end point of the lifting movement H, whereby the rising tooth flank of the fixed rake 1 is aligned with the tooth flank of the movable rake 3 which subsequently takes over the rolling stock W.

PATENT ATTORNEY!: F.W. HEMMERlj» ;"gERI$ MILLER·· Cfc'GRQSfE · F. POLLMEIER

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February 6, 1979

8.2658/snz-fr

In Fig. 6, the rolling stock W lies directly above the tooth tip of the fixed rake 1, embedded between the movable rakes 2 and 3, whose effective tooth flanks in the upper end position of the lifting movement H are aligned with the falling or rising tooth flanks of the fixed rake 1.

In Fig. 7, the rolling movement of the rolling stock W along the sloping tooth flanks of the fixed rakes 1 begins when the lowering movement of the movable rakes 3 has begun. To fix the position of the rolling stock W, the movable rakes 2 remain in their upper lifting position in order to safely prevent the rolling stock W from rolling back.

In Fig. 8, the rolling movement of the rolling stock W continues along the sloping tooth flanks of the fixed rakes 1, as the movable rakes 3 continue to lower. The movable rakes 2 have already reached the lower position of the lifting movement H and are ready to take over rolling stock W with their effective tooth flank aligned with the sloping tooth flank of the fixed rakes.

In Fig. 9, the movable rakes 3 have also reached their lower stroke position and are in their starting position for the next cross-conveying cycle. The rolling stock W has been moved further by one tooth pitch of the fixed rakes 1 while covering the rolling path V in the cross-conveying direction R by the alternating lifting and lowering movement of the groups of movable rakes 2 or without relative movement between the rolling stock W and the tooth flanks of the rakes 1, 2 and 3.

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Claims (1)

PATENT ATTORNEYS F.W. HEMMERI(J)H -JGEnCtM(JlLLeR "· DJGROSiE · F. POLLMEIER 6 February 1979 - 9 - 8.2658/snz-fr SCHLOEMANN-SIEMAG AKTIENGESELLSCHAFT, 4000 Düsseldorf 1 feClaims ; 1. Cooling bed for transverse conveying of rolled goods, in particular pipes or round cross-sections, consisting of two groups of toothed rakes which are dependent on one another and move in opposite directions, each driven by a cam disk drive with cam disks arranged 180° apart from one another, and fixed rakes, whereby the rolled goods to be transversely conveyed perform a rolling movement along the fixed rakes,
characterized, that the transverse conveying movement of the rolling stock (W) along the tooth flanks of fixed toothed rakes (1) takes place without relative movement to the rolling stock (W), in that the rolling stock (W) is conveyed in the conveying direction (R) in the area of the rising tooth flanks of the fixed rakes (1) up to their tooth tips by means of a group of movable rakes (2) and in the area of the falling tooth flanks by means of a further group of movable rakes (3) with the same tooth pitch as the fixed rakes (1), whereby the tooth flanks of the groups of movable rakes (2 and 3) which carry out the rolling movement have an equal but oppositely directed inclination compared to the corresponding tooth flanks of the fixed rakes (1) which receive the rolling stock (W), and the movement of the groups of movable rakes (2 and 3) takes place in a lifting and lowering movement directed parallel to the center of the apex of the rake teeth (1 a) of the fixed rakes (1). 2. Cooling bed according to claim 1,
characterized, " PATENT ATTORNEYS FW HEMMERICH -IGEHKMIaLWER ' D! GROSSE · F. POLLMEIER 6 February 1979 - 10 - 8.2658/snz-fr that the rake teeth (2 a, 3 a) of the two groups of movable rakes (2 and 3 respectively) are designed in opposite sawtooth shapes, whereby the tooth flanks carrying out the rolling movement extend over the length of the tooth pitch. 3. Cooling bed according to one of claims 1 or 2, characterized in that the teeth (1 a) of the fixed rakes (1) are preferably symmetrical. 4. Cooling bed according to one of claims 1 to 3, characterized in that the tooth tips of the two groups of movable rakes (2 and 3) are arranged symmetrically to the tooth root of the fixed rake (1) laterally offset according to the support surface of the largest circular cross-section in their initial position approximately congruent with the conveying plane of the fixed rake (1). 5. Cooling bed according to one of the preceding claims, characterized in that the groups of movable rakes (2 and 3) are guided in straight guides (23) parallel to the apex center of the fixed rakes (1) so that they can be raised and lowered. 6. Cooling bed according to one of the preceding claims, characterized in that the tooth flanks of the teeth (1 a) of the fixed rake (1) are preferably symmetrically inclined to the tooth tip and form an angle of at least 90° with each other at the tooth tip. M111 I I I