DE2520388A1 - COOLING BED FOR A ROLLING MILL - Google Patents

Description

Applicant: Birdsboro Corporation, Birdsboro, Pennsylvania, USA

Cooling bed for a rolling mill

The invention relates to a cooling bed for a rolling mill installation according to the preamble of claim 1, as well as a method for conveying rolling stock in such a cooling bed.

In known rolling mills, for example, rolling stock is made from Steel rolled out in a strand shape to achieve a certain cross-sectional shape by using special rollers. The strand-shaped Rolled stock, which can have a length of more than 90 m, normally emerges from the last roll stand with an elevated one Temperature off. To the rolling stock laterally to its conveying direction A cooling bed is used to convey it away through the roll stands and to achieve air cooling of the rolling stock. Included an infeed table is provided to receive the rolling stock from the rolling mill. A mechanism is provided on the infeed table to transport the rolling stock onto the cooling bed. After the rolling stock has been transported over the cooling bed, it can be transported further

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take place via a discharge table in the finishing shop or the like .

It is the object of the invention to provide a cooling bed of the type mentioned at the beginning Kind to be improved in such a way that a single strand or two strands of the rolling stock are transported further at the same time can occur without interfering interactions with end strands during the simultaneous further transport of two strands. With this cooling bed it should be possible to transport the strands to a one-sided cooling bed with two inlet layers. With the simultaneous transport of two strands to the one-sided The cooling bed should not have a disruptive interaction with the following strands. A device should also be installed on the cooling bed for stacking several strands for simultaneous transport over the cooling bed and for lifting off at the outlet end of the cooling bed are provided. It should be possible to put a single strand or two strands in separate pockets of the cooling bed in the side Transport direction. The transport should take place via individual or alternating pockets of the cooling bed. The establishment should be designed so that an appropriate lifting from a stack at the outlet end of the cooling table can take place. These The problem is solved by the characterizing features of claim 1. Advantageous developments of the invention are the subject of the subclaims. - ^

In such a cooling bed, there are upper and lower inlet tables and an ejector mechanism in each Height to transport strands into upper or lower pockets. A sawtooth-shaped cooling bed can optionally be operated in this way that individual strands from the lower pocket or strands from the upper and lower pocket are transported at the same time will. A transmission device is controlled with such a switching sequence that the strands without interfering interaction can be removed with the following strands., A stacking Nictianism is used to automatically stack the flat strands in the lower pocket before transferring them to the cooling bed. At the

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The end of the cooling bed is an automatic device provided to transfer the strands from the stack to a discharge table with the help of a Wimmler.

The essential characteristics are therefore summarized the invention seen in a cooling bed, in which an inlet table is provided for two strands and a device for optional transport of a strand from both parts of the inlet table to the cooling bed, with a one-stage or two-stage Transport can take place through the transmission mechanism of the cooling bed. A stacking mechanism makes stacks of the flat metallic strands are formed in one of the pockets of the cooling bed, after which the stack is transported over the cooling bed can, on which an automatically working lifting mechanism is provided, so that individual strands are transported away via a Wimmler can be. When rolling stock reaches both layers of the infeed table, there is a device for verifying the position consecutive strands provided, as well as for individual removal from each inlet layer if the time difference between Strands in each layer is so large that both strands cannot be removed together without an interaction with the following strands in each position.

The invention is intended to be more detailed, for example, with the aid of the drawing explained. Show it:

Fig. 1 is a schematic view of a cooling bed according to the invention;

Fig. 2 is a sectional view taken along line 2-2 in Fig. 1;

Figure 3 is a view taken along line 3-3 in Figure 2;

Fig. 4 is a partial view of the device in Fig. 2 used to explain the operation of the stacking mechanism;

5 and 6 are partial views used to explain the operation of the movable transmission rods;

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7 and 8 are partial views of the lifting device;

9a to 9g and 9i to 9p show a schematic representation of the mode of operation of the ejection device of the cooling bed in FIG. 1; and

9h shows a block diagram of the associated control device.

Fig. 1 shows a cooling bed device 10, which is a steel rolling mill 12 is assigned. The rolling mill 12 enables the delivery of a first strand 14 and a second strand 15, which Strands are rolled in the rolling mill 12 to a predetermined cross-sectional shape. The strands 14 and 15 can through a shearing device 17 or 18 divided into a desired length will. Known shearing devices of this type enable the strands to be subdivided during their movement. the Strands 14 and 15 pass through a lower set of exit rollers 20 and an upper set of exit rollers 21 to the cooling bed assembly 10.

The cooling bed device 10 contains an inlet device 25, an ejector device 26, a cooling bed 27, a whimper device 29 and a discharge table 30. The ejector 26 receives the strands 14 and 15 and transports them onto the Cooling bed 27. The ejector 26 includes lower and upper parts 31,32, each of which has a set of infeed rollers 35 and 36, respectively, which are aligned with the outlet rollers 20 and 21. The upper and lower parts contain plates 38, 39, the also adjacent to their assigned infeed rollers 3 5 or 36 are arranged, each plate can be actuated to make strands to be transferred to the cooling bed 27, as will be explained in more detail below. The lower plate 38 may come in a number from plate sections 38a-38h and into an extending plate section 38i be subdivided. Similarly, the top plate 39 can be extended into plate sections 39a-39c and one Plate portion 39d can be divided. The plates 3 8 and

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39 serve to transport the strands 14 and 15 from the rollers 35 and 36, respectively, to the cooling bed 27.

The cooling bed 27 contains a number of alternately stationary and movable transmission rods 41, 42 which are perpendicular to the conveying direction along the infeed direction 25. The movable transfer rods 42 are used for the stepwise transport of strands from the inlet device 25 via the cooling bed 25 to a known Wimmlereinrxchtung 29 and to a discharge table 30, from which a further transport for further processing takes place.

Under the plate 38 is a stacking mechanism 8O (Fig. 2) arranged for stacking a predetermined number of strands to be stacked before being transported over the cooling bed 27. A lifting device 250 (FIG. 7) is arranged between the outlet end of the cooling bed 27 and the wimmering device 29, in order to feed the strands individually in a stack on the cooling bed 27 to the wimmering device.

In the following, the device 26, the transmission device 27 will be explained in more detail. The inlet device 25, the Wimmlereinrxchtung 29 and the run-out table 30 can in on be trained in a known manner.

As can be seen from FIG. 2, the inlet device has 25 a frame 45 on which a number of drive units 46 to drive the rollers 35 and 36 are provided. Any drive unit 46 includes a drive shaft 47 to which one of the upper inlet rollers 46 is attached. A second drive shaft 48 extends from the opposite end to drive one of the lower infeed rollers 35. Each infeed roller 35 is at one end a shaft 50 which is rotatably supported on the frame 50 in bearings 51,52. The opposite end of each shaft 50 can, for example, be coupled to the associated drive shaft 46 via a belt 53 which revolves around a first guide roller 54

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extends, which is attached to the shaft 5O, 'and a second Guide roller 55 attached to shaft 45. As can be seen from FIG. 2, the axes of rotation of the rollers 3 are 5 and 36 arranged inclined downward to the cooling bed 27, so that the strands conveyed on the upper or lower rollers 35, 36 are move sideways to the cooling bed 25 under the action of gravity. The lower and upper panels 38 and 39 are adjacent to the lower ends of the rollers 35, 36 arranged, each plate extends longitudinally in a direction parallel to the direction of movement of the strands along rollers 3 5, 36. In the following the plates 38, 39 are to be described in more detail, their mode of operation together with the associated lifting devices of those Plate sections 38a-38i and 39a-39d correspond. the Upper sides of the plates 38, 39 are also inclined downwardly towards the cooling bed 27 at an angle approximately equal to that of the inclination angle of the rollers 35 and 36. The lower plate 38 shown in Figure has an inverted U-shaped cross section. The open bottom of panel 38 may be supported by a support member such as an I-beam 56. The plate 38 and the I-beam 56 are coupled for vertical reciprocation by a lifting device 57 which includes vertical linkages 58 attached to an arm member of a crank member 59 is hinged, which between its ends are mounted on a pin 6O and the other end is articulated on a rod 61 movable in the longitudinal direction is. By moving the rod 61 in a first direction perpendicular to the plane in FIG. 2, the crank member 59 is in a first direction moves the plate 38 from the position shown in solid lines to that shown in dashed lines Able to raise. The return movement of the rod 61 causes the plate 38 to return to its starting position. The plate 39 is in correspondingly movable to and fro by a lifting device 64, which is designed like that of the plate 38. each of the plate sections 38a-38i and 39a-39d is provided with a individually operable lifting device 57 or 64 connected.

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so that these plate sections are reciprocated in groups can while others remain stationary, as in the following should be explained in more detail.

The plates 38, 39 are in their lowermost position in FIG shown in which position their inclined surfaces are aligned with the inclined uppermost parts of the periphery of the rollers 3 5/36 are. The plates 38, 39. Can be moved into an extreme upper position by means of the lifting devices 57, 64, which is indicated by dashed lines Lines is indicated, or in an intermediate layer.

As can also be seen from FIG. 2, the lower device 29 has a recess 7O with a section which essentially has a vertical L-shaped cross-section with a long arm 71 sloping down towards the cooling bed 27 and a short arm 72 that extends upward. The recess 70 is arranged so that its inclined arm 71 is aligned with the top of the plate 38 when it is in its uppermost layer 67. When the plate 38 is in its lowest position and one strand on the infeed table is deposited along the lower rollers 35, the strand is due to the side of the roller 35 to the top of the plate 38 the inclination of these limbs moves. This starts the sliding effect, through which the strand from its maximum speed is slowed down on rollers 3 5. The string can then be lifted into the recess 70 by actuating the lifting mechanism 57 of the plate 48 are transferred to their position shown in solid lines in Fig. 2, after which the strand extends onto the Surface 71 of recess 70 slides into its end position. A transfer of the strand to the cooling bed 27 can then be carried out in in a manner to be described. The short arm 72 of the recess 70 is formed in one piece with the stationary transmission rods 41. The upper device 28 has a corresponding one formed pocket 73 with a downwardly inclined long arm 74 which ends in an upwardly extending arm 75. The arm 74 is aligned with the top of the top plate 39.

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directed when this is in their shown with dashed lines topmost position. Therefore, a strand arranged on the upper inlet reels 36 can be put into the upper pocket 73 as described in connection with the recess 70 serving as a pocket.

It can be seen from FIGS. 2 and 4 that the device 26 includes a stacking device 80 for stacking the strands in the lower pocket 70. Although only one stacker 80 is shown, a number of such stackers are provided along the length of the device 26 to allow for equilateral operation. As is apparent from Fig. 2, the stacking means 80 of a drive unit 82 which drives a piston assembly 83 via a drive linkage 84th The piston device 83 is moved in the vertical direction through openings 85 'in the lower pocket 70 in order to move a piston head 85 against successive strands 86 which are deposited in the pocket 72 in the manner described. When a strand 86 is deposited in the pocket 73, its broad side rests on the surface of the pocket, as shown in FIG. 2 by dashed lines. During the movement of the piston device 83, the head 85 engages the strand 86 in such a way that it is arranged on edge in the manner shown in FIG. The piston device 83 can be pivoted clockwise in FIG. 2, so that when a strand 86 is subsequently fed into the pocket 70, the piston head is in a position in which this strand is also arranged upright like the first strand 86.

In the preferred embodiment, each includes a stacker two piston devices 83, each of which is actuated by the motor 82, but only one is shown in FIG is. The motor 82 has an output shaft 86 which has a clutch 87 is connected to the input shaft 88 of a reduction gear 89 which has two output shafts 90 of which

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only one is shown in Fig. 2, which is aligned in the axial direction and are substantially perpendicular to the axis of Input shaft 88 are arranged. Each of the output shafts drives a piston device via two identically designed drive rods 84 at. Since the linkage 84 and the piston devices 83 are of the same design, only the linkage 84 and the piston device were used 83, which is driven by the output shaft 90. A crank member extending in the radial direction 92 is coupled to shaft 90. A pin 94 extends from an opening in the crank member 92 so that the The axis of the pin extends parallel and at a distance from the axis of the shaft 90. The pin 94 extends through a link 95 which is supported on the pin 94 by bearings 96. A connecting rod 97 is at one end of the connecting link 95 attaches and extends radially from pin 94 to piston extension 82. At the other end thereof is a clevis 98 hinged. When the shaft 90 and the crank member 92 rotate, therefore, the connecting member 94 on the pin 93 and the rod 97 is actuated to drive the piston assembly 83.

The piston device 83 in FIG. 2 has a stacking rod 101 extending essentially in the vertical direction the piston head 85 at the upper end, the other end of which is hinged to an arm of a substantially L-shaped crank member 103 is. The crank member is arranged on a stack shaft 104 which extends in the horizontal direction and which is not shown in FIG Storage is stored. The other arm of the crank member 103 extends in the radial direction from the shaft 104 and is with the connecting rod 97 is articulated. The rod 101 runs through between the piston head 85 and the crank member 103 a guide collar 112 which is mounted on pins 113 between two parallel and vertically arranged plates 114, which on a horizontal shaft 115 are fixed above and parallel to the stack shaft 104 is arranged. The axes of the shafts 115

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and 104 are substantially parallel to the axes of FIG Pin 113, the winding pins 106 and 110 of the pin 94 and the output shaft of the transmission 89. As the output shaft rotates, the connecting rod 97 is reciprocated, the crank link 103 is pivoted about the shaft 104, so that the rod 101 and the piston head are reciprocated, the rod 101 is guided by the sliding connection with the guide collar 112.

The stacking device is initially in the through position shown in solid lines. After one rotation, the output shaft 90 and 180 °, the piston head enters the through Position shown in dashed lines, whereby the strand 86 in question is pivoted in the pocket 70 by 90 ° about its longitudinal axis will. The stacking mechanism 80 is provided with an indexing device 120 in FIG. 4 in order to pivot the piston external direction 83 of the following strands 86 in a suitable position. The indexing device 120 includes a vertical one Plate 122 attached to shaft 115. The plate 122 is arranged to be pivotable, as shown in FIG. 4 by an unbroken line and dashed lines are shown so that the angular position of the shaft 115 can be adjusted, whereby the guide collar 112 is adjusted and the angular position of the stacking bar is determined. The plate 122 can be adjusted by an arched rack 125, which is on the underside the plate 122 is attached and meshes with a gear 126 which is attached to a horizontal shaft 127 which is in bearings 128 are stored. The shaft 127 is operated by an indexing cylinder 130 with a piston rod 131 which is attached to a Plate 133 engages, which engages the shaft 127 via a bracket connection 13 5 which is attached to the end of the piston rod 131 is. The cylinder 130 has horizontal journals 137 which are mounted in vertical bearings 13 8. One not shown Control means are provided which step the piston rod 131 into a number of different positions

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is shifted to rotate the shaft 127 and the gear 126. Therefore, via the rack 125 on the plate 122, the shaft 115 rotated step by step. By changing the angular position of the shaft 115, the position of the guide collar 112 is changed in such a way that the stacking rod 101 is actuated with the piston head 100 in different angular positions, so that the stacking rod 101 has a suitable Arrangement of successive strands 86 in the pocket 70 can cause. A second cylinder 145 is supported by journals 146. Its piston rod 147 is articulated to the plate 122 with a fork head 148. Through the cylinder 145, the plate 122 are moved back into their starting position so that a single-acting cylinder 130 can be used. The one not shown Control device for the stacking device can contain, for example, an element that is based on the reaching of the rest position of a Strand 86 in the pocket 70 responds and energizes the motor 32 so that a single rotation of the coupling 95 takes place around the piston neinrichtung 83 to move according to a work cycle. A limit switch, not shown, can be operated by pin 94 to stop the circuit after each revolution of the To actuate pin 94 to return the motor 86 and the cylinder 30 to a next position.

The cooling bed 27 has a number of stationary, pocketed transfer rods 41 for strands, as well a number of pocketed transmission rods 42, which are arranged between the stationary transmission rods 41. As can be seen from FIGS. 2 and 3, the cooling bed contains 27 a number of separate, parallel arranged and horizontally extending transmission rods 41 with a sawtooth-shaped Longitudinal sections attached to a carrier 155. Between the transmission rods 41, they are essentially the same trained, but movable transmission rods 42 arranged. The transmission rods 41, "42 extend between the Device 26 and the Wimmleinrichtung 29 for transporting the

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Strands from the infeed table 25 to the facility 29. The ends

of the attached transmission rods 41 are attached to the lower pocket 70. In the lower and upper pockets 70, 73 are aligned with the movable transmission rods 42 Slots 156 are provided so that the movable rods can move therethrough and strands from pockets 70 and 73 be able to record. The mechanism for actuating the movable transfer rod is shown in FIGS. 5 and 6. The mechanism for a transmission rod 42 includes a first transmission 157 for horizontal movement of the transmission rod 42, a second transmission device 148 for moving the transmission rod 42 in the vertical direction, and switching means 159 (Fig. 6) for adjusting the horizontal component of the settlement between a first Distance and a second distance that is about twice as large as the first distance is.

The drive mechanism for the movable transmission rod 42 in Fig. 5 includes two drive motors 60 axially aligned on the opposite side of a gearbox 161 are arranged, and are connected by clutches 162 to their input shafts. The transmission 161 is under the transmission rods 41, 42 and has a first pair of axially aligned, horizontal output shafts 165 for Drive of two lifting rods 167 which are connected to the movable transmission rods 42 and part of the first transmission device 157 and a second pair of axially aligned horizontal output shafts 166 for drive a cross linkage 168, which is also connected to the movable transmission rods 42 are coupled and form part of the second transmission device 158.

The rods 167 serving for lifting and lowering on both sides of the gear 61 are designed in the same way, so that only one of them should be described. As from Figs. 5 and 6

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As can be seen, there is a crank member on the output shaft 165 170 arranged eccentrically. A crankshaft 171 extends from the crank member 170, the axis of which is substantially parallel to that of the shaft 165 and rotatably with a lifting rod extending substantially in the horizontal direction is connected, which is substantially perpendicular to the transmission rods 41, 42 of the cooling table and below a number of this transmission rod η runs. Where the lifting bar 172 runs under the movable transmission rods 42, For example, a crank member 174 is hinged to a horizontal pin 175 which extends perpendicular to the axis of the lifting rod 172. One arm of the crank link 174 extends vertically downward from the pin 175 and is on the lift rod 172 hinged by a pin 176, the axis of which is parallel to that of the pin 175. The other arm of the crank link 174 extends substantially horizontally and terminates at a point below the transmission rod 42 where a connection by a linkage 177 with the underside of a horizontal beam 180 which is substantially parallel to the movable transmission rod 42. The carrier 180 supports the transfer rod 42 on a horizontal roller 182 from, the rotatable on the carrier 180 between vertically extending arms 183 and a horizontal Pin 184 is arranged, the axis of which is perpendicular to the axis of the transmission rod 42. When the crank member is 170 around the pin 175 is rotated, the lifting rod 172 is therefore below the cooling bed 27 pushed back and forth. Movement of the lift rod 172 rotates the crank member 170 so that the carrier is raised and lowered, whereby the transmission rod 42 is also raised and lowered. This arrangement enables that the lifting rod 172 simultaneously has a number of carriers such as carrier 180 among other transmission rods 42 raises. The other lifting linkage 167 under the opposite side of the gear 161 exercises a lift in a corresponding manner

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applies to the other end of the beam 180 at a separate location. Instead of the lifting mechanisms described, however, other correspondingly effective devices for raising and lowering the transmission rods 42 are also used.

As can also be seen from FIGS. 5 and 6, the contains Linkage 168 includes a drive mechanism 190 for selectively changing the distance that the transmission rods 42 along their longitudinal axes are moved back and forth. The drive mechanism 190 includes a box-shaped frame 191, the extends substantially horizontally between beams 180 and between the transmission rods 41, 42 and the gearbox 161 is arranged. The opposite ends of the frame 191 terminate in an approximately triangular end portion 191S of the sliding is mounted on supports 180 and each of which is connected to a drive linkage 191 with a movable . Transmission rod 42 is coupled. The frame 190 can along its longitudinal axis can be moved along short lifting distances by a transmission linkage 195, which is on one side is arranged, or by a transmission linkage 165 for a long lifting distance, which is arranged on the other side. Switching between a short lifting distance and a long lifting distance takes place with the aid of a switching mechanism 197. As off As can be seen from FIG. 5, the drive linkage 195 for the short stroke distance contains a crank member 200 which is attached to the output shaft 166 of the transmission 161 is attached. The crank member 200 has an eccentric shaft 201 which is mounted in a linkage 202 which is connected to one end of a substantially horizontally extending drive rod 203. The opposite The end of the drive rod 203 is connected to the switching mechanism attached to the frame 191 via a fork head 204 tied together.

The switching mechanism 197 includes a tubular member 208 that extends horizontally between the sides of the frame 191 extends and is rotatably mounted thereon. A shift cylinder

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201 extends transversely relative to tubular member 208 and along the longitudinal axis of the frame 191 and is at one end with a joint head 211 on a cross piece 213 between the Sides of the frame 191 hinged. A piston rod 215 extends downward from the cylinder 210 to a location below of the tubular member 208 where the end of the piston rod 215 is hinged to a horizontal pin 217 which extends between two parallel eyelets 218 on the link 208 extends. The axis of the connecting pin 217 is parallel to the axis of the tubular member 208, so that during the advance or return stroke of the piston rod 215 of the cylinder 210, the tubular member 208 in the frame 191 is pivoted. A rectangular plate is attached to one end of the tubular member 208 which is adjacent to the outside of the frame 191 on the side extends to the drive linkage 195 for the short stroke. The plate 220 has a rectangular slot within it Circumference. The longitudinal axis thereof extends substantially in the vertical direction when the device is in the position shown in FIG Fig. 6 is the position shown for the short stroke distance. A sliding block 222 is arranged in the slot 221 and through the joint head 204 is connected to the drive linkage 195. When the crank link 200 rotates, the drive rod 2O3 is reciprocated and pushed out so that the sliding block 222 moves the frame 191 back and forth over the plate. As in dashed lines is shown in Fig. 6, on the return stroke of the piston rod 215 to rotate the tubular member 208 in its position for the long stroke distance the fixed plate 220 rotated by 90 °, about the axis of the longitudinal slot 201 in to bring a position which is approximately parallel to that of the drive rod 203, so that when the reciprocating movement Rod 203 of the sliding block 222 is only moved back and forth within the slot 221 without a back and forth movement of the Frame 191 is caused.

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An identically designed drive device is arranged on the opposite side of the frame 191, however with the exception that the linkage 196 is arranged eccentrically in such a way that there is a greater lifting distance. A plate 225 is attached to the opposite end of tubular member 208 and has a slot that is similar to the slot is formed, but with the exception that this slot in the plate 225 is offset by 90 ° to that in the plate 220 is. When the piston rod 215 is advanced to cause the drive rod 203 to be driven with the short stroke distance, the slot in the plate 225 is arranged so that the engagement with the drive device 136 for the long stroke is canceled, while the opposite is the case when the rod 203 is lifted back to the engagement of the drive means 195 for the short lifting distance and the engagement with the drive device 196 for the long lifting distance to effect. Figure 5 shows the linkage 192 which sets the reciprocating motion of the frame 192 in motion of the movable transmission rods 42 converts. The linkage 192 includes an elongated rod 230 which is hinged to the underside of the transmission link 42 with a pin 232. The opposite end of the rod 230 is hinged to one arm of a crank member 233 via a vertical pin 234, while the apex of the crank link 233 is connected to the bracket 13 8 by a pin 235 and the other arm of the crank link 233 is hinged to the frame 191 by a vertical pin 23 5. By reciprocating the frame 191, the crank link becomes 233 pivoted about the pin 23 5 and thereby causes the connecting rod 230 in a direction parallel to the transmission rod 42 is reciprocated. The connection the rod 230 with the transmission rod 42 through the pin 232 causes a longitudinal movement of the transmission rod 42 the roles 182.

If the mode of operation is stopped with the short stroke distance, when the linkage is operated at the same time, 168

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and of the lifting linkage 167, the transmission rods 42 are arcuate reciprocated as shown by line A in Fig. 2 so that the strands 86 are lifted from the pocket 70 and over the cooling bed 27 can be transported. In a corresponding manner, the transmission rods are in the mode of operation with a double stroke length 42 moved along the line B so that strands picked up from the pockets 70, 73 around two pockets on the transmission rods 41 and not around a pocket, as in the single stroke mode of operation.

The reciprocating movement of the movable transfer rods 42 serves to transport the strands over the cooling bed 27 to a known wimmlermechanism 29 by which the strands are moved to the discharge table 30 which takes them to the dressing shop transported further (Fig. 1). At the end of the cooling bed 27, a lifting mechanism 250 (FIGS. 7 and 8) can also be provided to automatically separate the strands that have been piled up by the stacking mechanism 80 and transported over the cooling bed 27. This mechanism 250 contains two identically designed lifting devices which can be actuated separately, only one of which is shown in FIG. 7 and 8, and which is coupled to a drive unit (not shown) via a shaft 258 which is essentially perpendicular to the conveying direction of the strands over the Cooling bed 27 extends and is stored in bearings, not shown. The shaft 258 can also be used with a different lifting mechanism coupled, which is arranged along the cooling bed.

As can be seen in FIG. 7, the lift-off mechanism 250 includes arms 265 that are attached to the shaft 258. There are two opposite, extending in the radial direction arms provided with recesses 267, which at their ends by a projection 268 extending in the radial direction are formed. The recesses 267 are on the end edges of the arms 265 provided relative to the direction of rotation. An optionally adjustable elevator 270 is provided adjacent the arm 265 and includes a pocket 272 that is held by a pin 278

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the ends of two separate levers 273 are connected which are rotatably mounted on the shaft 258. An arcuate guide rod 271 is on levers 273 at a distance from the pocket 27-2 and extends substantially parallel to the conveying direction of the strands over the cooling bed 27 to the strands to promote facility 29. A threaded bolt 280 that extends through pocket 272 and the top of the panel 226 at a point between the pivot pin 278 and the curved guide rod '274 serves as an adjustable stop.

The pocket 272 and the guide rod 274 can be pivoted into the working position in FIG. 8 by means of a cylinder 282 which is mounted in stationary bearings with the aid of pivot pins 283. The piston rod 285 of the cylinder extends upward and is connected to the lever 273 by a clevis joint 286 which is disposed between the ends of the lever 273 and the shaft 258. A control device (not shown) is provided for the piston rod 285 so that the piston rod is optionally advanced in order to move the lever 273 from its inoperative position in FIG. 7 to the working position in FIG. When the pocket 272 is withdrawn, as shown in FIG. 8, the transmission of strands 289 from the stationary transmission rod 41 to the device 29 is not influenced. However, the advance of the piston rod 285 causes the pocket 272 to pivot along an arcuate path of movement, so that a stack 290 of strands can be picked up by the movable transfer rod 42. The arms 265 can then be rotated by moving the recess 267 against the lowermost strand of the stack 290 in the pocket 272, whereby a strand is moved out from the bottom of the stack and carried forward until it contacts the curved guide rod 274, whereby the Strand is moved from the guide rod 274 to the device 29 and transported to the discharge table. The arm 265 is used so often

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rotates until all strands of a stack 290 come out of the with a recess provided bag are transported away.

9a to 9g show the conveying sequence for strands from the infeed table 25 to the cooling bed 27. The ones used for lifting Plates 38, 39 are initially in the raised position, successive strands 86 (FIG. 2) are in capital letters A, B, or D and E respectively. As soon as a strand A sheared off behind the rolling mill 12 lies on the infeed rollers 3 5, it slides sideways down against the raised lifting plates 3 8. When the strand is far enough along the infeed table 25 (Fig. 1) is advanced, the lifting plates 38 are lowered so that the strand slides from the infeed rollers 35 onto the surface of the lifting plates 38. The lifting plates 38 are then in their central position raised, whereby the speed of movement of the strand A is reduced in the lateral movement. After a Reducing the speed of movement by about 1/3, the lifting plates 3 8 are raised to their uppermost position, so that the strand A from the top of the lifting plates 38 into the pocket 70 of the transmission rods 41 arrives. The braking effect during the sliding movement of a strand begins as soon as a strand is transported starts from the infeed rolls onto the lifting plates, as well as during the transport from the lifting plates into the pockets 70 of the stationary Transmission rods 41 until the rest position of the strand in these bags is achieved. For an appropriate transfer it is necessary that the lifting plates 3 8, 39 at least partially are raised before the leading end of the next strand B can be conveyed onto the lifting plates. This is because of this achieved that the infeed rollers are rotated at a speed, which is greater than that which corresponds to the conveying speed of the rolling mill. Furthermore, a not shown Deflector plate can be arranged in front of the first lifting plate 3 8a or 39a, which is connected to the actuating mechanism of the lifting plates is coupled so that when lowering the lifting plates 3 8 or 39

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the deflector plate is raised _{7 in} order to guide the leading end of the next strand B along the upper half of the infeed rollers, at least along part of the route.

To avoid differences in the conveying speed of the rolling mill, Consider product differences and different lengths of the strands The lifting plates 38, 39 are in plate sections 3 8a to 3 8i and 3 9a to 39d, respectively, starting at the entrance of the infeed table along the length of the cooling bed. When the required point of impact is along the length of the cooling bed moved because either the strands are shorter or longer strands are conveyed at a slower speed, a Part or parts of the lifting plates 38, 39 disengaged -jsjerden, so that they are in the raised position when transferred stay on the rod. These raised panel sections together with the separation distance prevent the leading end of the next thread B is transmitted before the transmission of the previous thread A is terminated.

Detection devices are shown in the block diagram shown in FIG. 9h 300, 301 for the hot rolling stock, which are in the upper or lower area of the infeed table 25 for detection the leading end of a strand are provided. Between these manufacturing devices and the actuating devices 304 and 305 for the upper and lower nudging mechanisms are delay circuits, respectively 302, 303 connected. As the length of the strands, the conveying speed and the distance from each Hacliweiseinrichtung 300 or 301 to the point at which the pushing process should be initiated, each known, can be the time delay between the passage of the leading end of the strand at the detection device and the start of the triggering process can be determined.

The conveying speed at which the rolling stock can be fed from the rolling mill depends on the cycle time of the cooling bed. In a practical embodiment, the cycle time of the cooling bed was about 7.5 seconds, the strand length about 50 m

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Cooling bed length 55m, the sliding friction 0.33 and the strand sliding distance about 24.6 m. The last-mentioned distance is the conveyor line of the cord between the point at which the nudging process begins and the point at which the cord returns to the rest position got. Under such conditions, a maximum conveying speed of the rolling mill is about 12 m per second possible. In order to separate the sheared strand from the strand emerging from the rolling mill, the infeed rollers 20, 21 driven at such a speed that the conveying speed of the strand is about 10% greater than that of the rolling mill is, so in the example described is about 13.2 m per second.

Because the conveying speed of the severed strands is greater than the conveying speed of the rolling mill, so that a separate supply can take place in the pockets 70, 73, the movable transmission rods 42 can be used to transport the Strands are moved out of the pockets without a disturbing interaction with a subsequent strand in the same Height takes place. This is difficult when strands are being removed from upper pocket 73 and lower pocket 70 at the same time should be because it is unlikely that the strands concerned in both pockets at the same time in the rest position reach. In such cases there is a time control so that there is a disruptive interaction with the following strands on both the upper and lower part of the infeed table 25. is avoided. The timing is controlled by the Determines the time taken to move the transmission rods 42 by each of the pockets is needed, as well as the time lag between the top and bottom strands. With the practical one mentioned Embodiment 0.75 seconds are needed until the transmission rod 42 releases the lower pocket 70, and 1.06 seconds to release the upper pocket 73 and a delay time of 0.55 seconds. Furthermore, the time between

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the shearing of a strand and its placement in a pocket by the lifting plates concerned for 3.415 seconds, during a Strand slides into the pocket 2.67 seconds later, resulting in a total transfer time of 6.085 seconds. if Then the lower strand leads opposite the upper strand for no more than 4.28 seconds, both strands can be removed at the same time will. However, if the lower strand leads the upper strand by more than 0.28 seconds, the lower strand must go first can be removed, after which the upper strand and the following lower strand can be removed at the same time.

This functional sequence is shown in FIGS. 9a to 9g and 9i to 9p. If the strand A the shear device to Time to leaves and the leading end of this strand at the detection device passed, which is provided at a point between the ends of the infeed table 25, is by a of the signal supplied to the detection device initiates the triggering process, which preferably occurs after the trailing one End of strand A was conveyed about 24 m along the infeed table. Therefore, after a time of to + 1.935 seconds the lifting plates 28 moved downwards so that the strand A can slide from the infeed rollers 35 onto the lifting plates 38, so that the sliding movement of strand A begins (Fig. 9b). The lifting plates 38 are then raised to an intermediate position (Fig. 9c), which is retained so that the following strand B does not get onto the lifting plates 38. Currently to + 3.415 seconds the lifting plates 38 are raised so that the strand A gets into the pocket 70 and at time to + 6.085 seconds Assumes rest position (Fig. 9d). The following strand B is fed to the infeed table by the shearing device at time to + ■ 7.5 seconds (Fig. 9e) and is supplied in a corresponding manner promoted as the strand A, which is why the lifting plates 3 8 at the time to + 10.915 seconds are raised to the strand B in the pocket 70 to promote. Before this point in time, the strand A is removed by the movable transmission rods 42.

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If a strand must also be removed from the upper pocket 73, it must do so at a sufficient time in advance of the point in time to + 10.915 seconds, so that the movable transmission rod 42 can be moved through the lower pocket 70 through the strand B without hindrance. As the movable transmission rods It will take 0.55 seconds of slack and 1.06 seconds to release both pockets 70 and 73, and because of the strand B reaches the lower pocket at time to + 10.915 seconds, the transmission rods must at the latest by time to + 10.365 seconds to prevent a disturbance by line B. Because strand D is no later than time to + 10.365 seconds (Fig. 9f) reaches the rest position, and because the rods 6.085 seconds after actuation of the shear device stop, strand D must follow strand A within 4.28 seconds at the latest if strands A and D are at the same time to be removed from the movable transmission rods. When the strand A passes the detection device 300, the position of the strand D is also detected by the detection device 301 (FIG. 9h). If the strand D is the strand A follows for less than 4.28 seconds, logic circuit 306 actuates the transfer bar actuator 307 when strand D comes to rest, and strands A and D are removed from their pockets prior to the time to which the lifting plates are raised in order to transport the strand B into the pocket 70 (FIG. 9g).

If it is found during the detection of the position of the strand D that it lags behind the strand A by more than 4.28 seconds, actuate logic circuit 306 delay circuit 308 prior to actuation of the transfer bar actuator 307

If the time interval between strand A and strand D exceeds 4.28 seconds, the actuating device 307 is triggered by the logic circuit 306, and the line A

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is removed from the pocket by the transfer rods 42 (Fig. 9i). The delay circuit 308 resets the logic circuit after a delay time so that a new transmission cycle is initiated. This delay time is given by T =, ^V P , where T = delay time,

^{K + T} M - ^T CR

K = a constant, Vp = product speed on the infeed table, T., = safety limit time, and T _r _ = movement time / to move the transmission drive from the rest position to a position in which the rods in the pockets 70 and 73 touch will. The strand fed to the upper pocket 73 then becomes the leading strand and the strand fed to the lower pocket 70 becomes the trailing strand. This transmission cycle is maintained as long as the upper strand leads with respect to the lower strand by no more than 3.22 seconds in the illustrated embodiment. Here, the shearing off of the strand D determines the point in time to (FIG. 9j), so that the strand D is pushed and slides into the rest position at the point in time to + 6.085 seconds (FIG. 91). The trailing strand E is cut off at time to + 7.5 seconds (Fig. 9m) and strand B slides into a rest position 3.22 seconds after strand D or Zorn time to + 9.305 seconds (Fig = 9n) _o The lifting plates move strand E ₉ that follows strand D ₅ into the pocket at time to + 10.915 seconds (FIG. 9p). As described above HTaTa ¹ B ₃ , the transmission rods need I ^ 06 seconds to move through the upper and lower pockets and must also have at least 0.55 seconds of release time. As long as the oJbsre strand opposite the bottom strand ^u n * layer performs more than 3 _ff 22 seconds in the transmission cycle is continued in the cooling bed in this way. The cycle is therefore initiated when the upper strand is detected by the detection device 301, at which point in time the position of the lower strand is detected. If the time interval is less than

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If 3.22 seconds is the transmission cycle will be in this way continued. If the lower leg lags more than 3.22 seconds, logic circuit 306 actuates the actuator 307. After a time delay, the sequence is initiated in which the lower strand by such a period of time which exceeds 3.22 seconds between the top and bottom strands, so that the distance between the bottom Strand and the next top strand is less than 4.28 seconds.

If only one strand is being rolled by the rolling mill, only the lower part of the infeed table is in operation. In this case the linkage 168 can be set to either work with short or long lifting distances, depending on the rolling material is dependent, the movable transmission rods 42 accordingly moved one or two pockets in the longitudinal direction will. If desired, the upper part of the infeed table can be put into operation when rolling a single strand, if the lower part of the infeed table is not ready for use. In this case, the linkage 168 will operate set with long lifting distances. When strands are transferred via both hoists, the linkage will 168 adjusted to the mode of operation with long lifting distances, so that the movable transmission rods 42 strands of both Pockets 70, 73 on the stationary transmission rods 41 transferred and due to the simultaneous transfer from the pockets to the cooling bed 27 transferred two strands each will.

In common rolling stock, the stacker 80 and the lifting mechanism 250 are not used and the strands are Transferred via the cooling bed to the Wimmleinrichtung 29 and then on the run-out table 30. However, rolling stock such as strip steel is often stacked in order to reduce the cooling during transport over the cooling bed 27. If stacking is to be done, only

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the lower infeed rollers 3 5 are used and the strands are in transported in the manner described in the lower holding pocket 70. When these "strands" are transferred into the pocket, the movable transfer rods 42 are not actuated immediately The stacking mechanism 80 described is then used to stack the strands 86 in FIG. 2 and successive strands are rotated by switching the stacking device into different working positions in a corresponding manner to a stack with a predetermined number of strands. After a stack is formed, the linkage 168 is set to operate set with long stroke distances so that the movable transmission rods 42 are moved along two pocket distances and only get into every other pocket. The same procedure is used for the subsequent ones that arrive on the infeed table flat strands carried out. When the stacks enter the last pocket of the cooling bed, the lift-off mechanism becomes 250 (Fig. 8) to bring the stack onto the movable pocket 272. Then the described procedure is carried out individually Transferring the flat strands of the device 29 for transfer to the discharge table 30.

S09847 / 0409

Claims (22)

-27- April 30, 1975 Ε / Εχ B-3 706 Patent claims | 4. jCooling bed with an inlet device, which follows one another ^ - ^ sheared strands of rolling stock are supplied, with an optional actuatable stacking device for supplied strands of rolling stock, with a first transfer device for transverse transport of individual or stacking strands of rolling stock to form an outlet device, and with a second transfer device for transferring the strands of rolling stock to the discharge device an associated lifting device, characterized in that the lifting device (250) is a Receiving device (272) for stacks (290) of strands of rolling stock and a swivel arm (265) for the successive transport of the strands of rolling stock onto the discharge device (29, 30), and that the receiving device (272) by an actuating device (282) between an inactive position outside of the conveying path of the strands of rolling stock and an effective position in which a stack (290) of strands of rolling stock of the first transfer device (41, 42) is received prior to transport onto the discharge device (29, 30). 2. cooling bed according to claim 1, characterized in that that the first transmission device (41, 42) can be actuated in such a way that a plurality of strands of rolling stock are simultaneously Can be transported in a first direction that the inlet device contains a first inlet part (31), which extends perpendicular to the first direction of movement and the strands of rolling stock exiting from a first from the rolling mill (12) Strand (14) can be fed, and which has a first receiving device (70) for strands of rolling stock that is adjacent to the first Inlet part (31), a second inlet part (32) is provided to which a second strand (15) exiting from the rolling mill Rolled stock strands can be fed, and a second receiving device (73) for receiving strands of rolling stock, which in 509847/0409 arranged at a distance from the first receiving device (70) is that the second transmission device is arranged in the first direction at a distance from the two inlet parts is, and that the first transfer means for simultaneously transporting the rolling stock in the first direction and from the first and second inlet part to the dispensing device is actuatable. 3. cooling bed according to claim 2, characterized in that that a control device (300-307) is provided by which the distance between strands of rolling stock is detected, which are fed to the first and second receiving means, and through which the operation of the transfer means is delayed until there is rolling stock in each receiving device, except when the distance is a predetermined one Amount exceeds. 4. cooling bed according to claim 2 or 3, characterized in that the transmission device in one Contains spaced transmission rods (42) which are relatively to the first and the second receiving device for simultaneous removal of rolling stock from these two receiving devices are movable., and that simultaneously removed Move rolling stock separately in the first direction to the delivery device. 5. cooling bed according to one of the preceding claims, characterized I denote that the first transfer device for the step-by-step transport of the rolling stock with approximately the same Amounts between the inlet device and the outlet device can be actuated that the receiving device (272) in their operating position the rolling stock from the first transfer device picks up after a movement of the rolling stock along the last movement step, and that the receiving device in their ineffective position can not accommodate any rolling stock. S09847 / 0409 6. cooling bed according to one of the preceding claims, characterized characterized in that the pivot arm (265) can be pivoted cyclically along an arcuate path which passes through guides a strand of rolling stock arranged in an edge region of the stack in order to successively feed rolling stock from the stack to transport the second transmission device (29). 7. cooling bed according to claim 6, characterized in that that a pivoting device (273) for holding the receiving device is provided on which an actuating device (282) for pivoting the receiving device between the active and the inactive position engages that the receiving device is oriented at an angle that two oppositely extending arms with rolling stock attack ends are provided, and that means (258) for rotating the arms for successive removal of the respective lowermost Rolled stock strand is provided in the stack on the receiving device is. 8. cooling bed according to claim 7, characterized in that that a curved deflection device (274) is connected to the receiving device and is thus movable into a position is received in the rolling stock removed from the stack by the arms and guided to the second transfer device will. 9. cooling bed according to one of the preceding claims, characterized characterized in that the transmission rods (42) can be actuated for transporting the rolling stock with first or second steps between the inlet device and the outlet device are that an actuating device (158) is connected to the first transmission device and can be optionally actuated is to move the transfer device along first or second stroke distances that the transfer device is relative 509847/0409 is movable to the first and second holding means that the transfer device is used to remove rolling stock from the first receiving device, but no rolling stock from the second receiving device removed when the movement takes place with the first stroke, and that the transmission device serves to remove rolling stock from both receiving devices when the movement takes place with the second lifting distance. 10. cooling bed according to claim 9, characterized in that that the first transmission device is used to gradually move the rolling stock along approximately the same stroke distances between to transport the inlet device and the discharge device, that the actuating device is used to adjust the movement with the first stroke, with rolling stock only to the first Inlet part arrives, and that the transport takes place with a second lifting distance, which is about twice as large as the first lifting distance, when rolling stock is supplied to both inlet parts. 11. cooling bed according to claim 10, characterized in that that a plurality of movable transmission rods (42) arranged in parallel are provided in order to simultaneously convey rolling stock in a stepwise manner to move with equal stroke distances from the inlet part to the outlet part that the transmission rods relative to the both inlet parts are movable to remove rolling stock from the inlet parts and at intervals in one direction the delivery side to move that a number of stationary transfer rods (41) are arranged parallel to the movable transmission rods that the transmission device a Actuating means (158) connected to the movable transmission rods and a first transmission means comprises, in order to raise the movable transmission rods in the vertical direction, that a second transmission means (157) for moving the transmission rods at the same time it is provided in the horizontal direction that the actuation 5Q9847 / 0409 means includes a switching device (159) which is connected to the second transmission means and between a first and second position is adjustable that the switching device is effective in the first position to connect the second transmission device to the transmission rodη along the To move stroke distance that in the second position the transmission device the transmission rod η along the second distance moved, and that means (197) are provided for selectively actuating the switching means between the first and second positions is. 12. Cooling bed according to claim 11, characterized in that the second transmission device is a linkage (168) that are connected to the movable transmission rods is that a drive device (160) is provided that a short stroke device (195) with the drive device is connected to perform a reciprocating movement along a first stroke that a long stroke device (196) with the drive device is connected to perform a reciprocating movement along a longer stroke, and that the switching device can be actuated in order to optionally connect the short-stroke device or the long-stroke device to the linkage. 13. Cooling bed according to claim 12, characterized in that that the switching device contains an element which is between a first position for engagement with the Kurzhubeinrichtung and a second position for engagement with the long stroke device is adjustable, and that means (210) for optional Movement of the element between these two layers is provided. 14. Cooling bed according to one of claims 3-13, characterized in that that the control device has a logical 509847/0409 See circuit (306) contains that a detection device (30O ₇ 301) is arranged in the first and in the second inlet part, that the two detection devices emit a signal to the logic circuit when a rolling stock reaches a predetermined position in the relevant entrance valley, so that the logic circuit determines the time difference between the product strands in the first and second inlet part in a position in which a removal can take place by the transmission device, that the logic circuit determines the distance of the first rolling stock strand to be received if the time difference is greater than that , which enables a removal of rolling stock by the transfer device from the first and second holding device without disturbing interaction by the following rolling stock, as well as for removing rolling stock from both receiving devices if the time difference is within predetermined limits. 15. cooling bed according to claim 13, characterized in that a delay circuit (302, 303) is provided is that for resetting the logic circuit for determining the time difference between successive strands of rolling stock serves after the logic circuit has actuated the transmission device to remove the first of the rolling stock strands. 16. Cooling bed according to one of the preceding claims, characterized in that the receiving device has an opening formed thereon, that the stacking device contains a plunger (85) which ^{is movable in a direction perpendicular to z} and along a path which intersects the receiving device and runs through the opening so that a flat rolling stock beam can be brought into an upright position in the receiving device, and that a device (120) is provided to successively reduce the inclination of the ram by beforehand. 509847/0409 correct angle relative to the receiving device to change to stack successive strands of rolling stock. 17. Cooling bed according to one of the preceding claims, characterized characterized in that two elongated inlet devices (31, 32) are provided, each of which is for receiving is used by rolling stock, and that an abutment device (38, 39) between the respective Einlaufexnrichtung and the receiving device for rolling stock from the discharge device and is provided for optionally moving the rolling stock into the associated receiving device. 18. cooling bed according to claim 17, characterized net that the second inlet device (32) increased compared to the first inlet direction (31) is arranged that the receiving means (70, 73) are arranged inclined downwards and have pockets for rolling stock at their lower end, and that the pocket of the second receiving device is arranged above the pocket of the first receiving device. 19. Cooling bed according to claim 18, characterized in that the inlet exnrxchtungeη inlet rollers (35, 36) included whose axis of rotation is parallel to each other and in the one direction that each receiving device is adjacent to the roles of the associated discharge device are arranged, that each abutment direction has a lifting device (38, 39), which is arranged adjacent to the respective rollers and is movable into a first position in order to remove rolling stock from the rollers take up, as well as a raised second layer to deliver the rolling stock to the receiving device. 20. Method for the simultaneous transport of strands of rolling stock in lateral direction of two inlet devices of a cooling bed according to one of the preceding claims, wherein- ^ each inlet inlet 509847/0409 direction the rolling stock strands are fed from a rolling mill, which strands of rolling stock conveyed through a transfer device are characterized by that a detection is made in one inlet device when a first strand of rolling stock reaches a predetermined position, that there is evidence in the second inlet device if the next strand of rolling stock comes to a predetermined position, that the first strand is removed when the time difference between the first and the second strand is greater than a predetermined period of time, and that the removal of the first strand is delayed when the time difference is less than a predetermined period of time so the two metal strands can be removed at the same time. 21. The method according to claim 20, characterized in that successively rolling stock from the inlet conveyed to the receiving device in each inlet device and that the predetermined amount of time is less than the time difference between successive transmissions in every reception facility. 22. The method according to claim 21, characterized that successively detected when successive strands of rolling stock have a predetermined Place in each inlet device that successively rolling stock is removed from an inlet device when the time difference in which the rolling stock strands in predetermined Locations of their respective E in] a3e direction are recorded, is below a predetermined amount, and that the strands of rolling stock are simultaneously removed from the inlet devices if this time is shorter than this time difference. 509847/0409 as *. Blank page