FR2475954A1 - BAR TRANSFER DEVICE - Google Patents

Abstract

1. An apparatus for transferring bars from a casting machine to a cooler, comprising a carriage provided with gripping means, characterized in that it comprises at least one rail (1) which is disposed longitudinally between the casting machine and the cooler (2), the carriage being moved along said rail (1), and at least two pulley tackles (9) mounted on said carriage, which act directly or indirectly on the gripping means, each of said gripping means comprising a hook (11) comprising in its lower portion a surface capable of co-operating with the surface of a bar (16) when said hook is lowered thereabove, to cause said hook to pivot and come into a position of gripping said bar.

Description

-1-

  The present invention relates to a transmission device

  bars from a casting machine to a cooling

  dissoir. Until now the bars, for example round or square, are transferred to the output of the continuous or vertical continuous casting machines to the cooler by means of

roller trains.

  These roller trains have the disadvantage, when the bars to be handled are of a relatively high weight,

to be very expensive.

  The present invention aims at providing a device for

  simplified transfer and therefore much less expensive.

  For this purpose, the subject of the present invention is a device for transferring bars from a casting machine to a cooling device, characterized in that it comprises at least one rail arranged longitudinally between the casting machine and the cooler, a trolley capable of moving along said rail and at least two hoists mounted on said carriage and provided with gripping devices to support the

closed off.

  When the continuous casting is in the pit, it is by

  consequently, the same device which performs the functions of

  vage and transfer. In addition, compared to conventional roll conveyors, the mechanics are simpler and less cumbersome and the civil engineering is simplified. In particular the pit for

  the casting installation can be substantially reduced.

  Preferably the hoists of the transfer device

  are powered by a single motor mounted on the truck.

  In an advantageous embodiment, the

  Positive grips are installed on a beam arranged longitudinally under the rail and on which are mounted the

free ends of hoists.

  The gripping devices can for example be

  constituted by a system of automatic tongs but preferably

  This gripping device is a hook comprising at its lower part a surface capable of cooperating with the surface of a bar when it has descended above this bar to rotate it and come into a gripping position.

bar.

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  Preferably also the device comprises at the edge of the cooler an inclined surface having a first portion of steep inclination on which the bar can be deposited by gripping means and a second portion of lower inclination ending in a stop at the cooler. Furthermore the device can be arranged to also be able to transfer the dummies of a zone

  from storage to the casting machine. -

  Other features and advantages of the invention

  will appear in the following description of one of its forms of

  realization given by way of non-limiting example.

  In the attached schematic drawing: - Figure 1 shows in perspective a device according to the invention may be applied to an installation

  comprising three casting machines and three coolers.

  FIG. 2 is a side view of the carriage of FIG.

positive according to the invention. -

  FIG. 3 is a front view on a larger scale of a hook according to the invention in the phase of gripping a bar. FIG. 4 is a view similar to FIG. 3 in which the hook is represented in the phase of depositing a bar.

  FIG. 5 is a diagram of a shared installation

  taking the device according to the invention.

  The device represented in FIG. 1 comprises three rails 1 arranged longitudinally between casting machines

  and rockers not shown on the one hand and coolers

  2 corresponding nights on the other hand.

  The three rails are installed on

muns 3.

  On each of the rails 1 is provided a trolley such as-

shown in Figure 2.

  This carriage is composed of a first beam 4 arranged longitudinally under the rail 1 to be able to move along

  of this rail. For this purpose the beam 4 is provided with rollers 5.

  On the beam 4 is installed a winch 6 actuated by a motor 7. On the winch 6 are wound two cables 8 each forming a hoist 9. The free ends of the hoists 9 are fixed on a second beam 10 arranged longitudinally under the

rail 1.

  Hooks 11, for example two in number, are pivotally mounted under the beam 10. The hooks 11 are connected to the beam 10 by means of clevises 12 forming a longitudinal pivot axis 13 so that the hooks 11

  can rotate in a plane perpendicular to the rail l.

  Thus the carriage can move longitudinally along the rails 1 and the lifting movement is exerted by the

winch 6.

  The hooks 11 mounted pivoting about the axis 13 formed by the yokes 12 comprise at their lower part an inclined surface 14 whose function will be described below. Moreover, the hooks 11 also comprise surfaces

  support 15 capable of receiving a bar 16.

  The entry of the bars 16 is done as shown in

Figure 3.

  The carriage is first brought to the vertical of a bar 16 which has previously been placed in a horizontal position by means of a rocker on supports 17. By actuation of the motor 7 the beam 10 and the hooks 11 are descended via the hoists 9. When the surface 14 of the hooks 11 comes into contact with the surface of the bar 16, the hooks 11 pivot about the axes 13 to come successively in the positions shown at 11a and 11b in Figure 3 When the hooks 11 have been sufficiently lowered they can pivot in the opposite direction to come to the position shown in lic. The hooks 11 can then be reassembled using the

winch 6 by raising the bar 16.

  The carriage can then transfer the bar 16 to the corresponding cooler by rolling on the rail 1. The removal of the bar 16 on the cooler 2 is effected in the manner

shown in Figure 4.

  At the edge of the cooler 2 is disposed an inclined plane 18 comprising a first part of steep inclination 19 and a second part of lower inclination 20. In the cooler 2 made in known manner, the surface weakly

  inclined 20 ends with a stop 21.

  The hook 11 is lowered by the hoists 9 until

  bar 16 comes into contact with part 19 of the

  18 in the position shown in 16a. The hooks 11 continuing their descent to the position ld o their spout 21 is retracted under the inclined plane 18, the bar 16 begins to roll on the steeply inclined portion 19 and under the effect of the inertia continues to roll on the slightly inclined portion 20 to be stopped in the position 16d against the stop 21 o

  it is then supported by the cooler 2.

  Figure 5 schematically shows an installation

  comprising a transfer device according to the present invention.

tion.

  This installation comprises three unrepresented vertical casting machines at the exit of which the bars, in particular round or square, are placed in horizontal position by means of rockers 22. Short roller conveyors 23 are provided to separate the bars of the rockers 22 and the

  bring under the end of the rails 1.

  On each of the rails 1 is mounted a carriage such that

  described with reference to FIG. 2 and each of the corresponding rails 1

  to a rocker 22 and to a cooler 2.

  It can be seen that the rails 1 extend beyond

  the last cooling device.

  transfer according to the invention also makes it possible to

  casting nequins to the casting machines.

  For this purpose, the storage area 24 of the manikins of

  casting is arranged at the ends of the rails 1 opposite to the -

  Tippers 22. A conveyor formed for example of rails 25 makes it possible to bring the dummies from the storage area 24 to a location below the rail 1 corresponding to the machine.

  casting on which it is desired to install the manikin.

  The invention therefore makes it possible to ensure in a simple and economical manner not only the transfer of the bars from the continuous casting machines to the cooler, but also casting dummies from their storage area.

to the casting machines.

  Although in the example described there is shown the treads of the carriage in the axis of the exit of the casting lines, it is also possible according to the invention, especially for a machine with two lines to use a single trolley whose raceways are perpendicular to

  the axis of exit of the casting lines and which is capable of des-

  serve both the cooler and the dummy storage.

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Claims (6)

  1. Device for transferring bars from a casting machine to a cooler, characterized in that it comprises at least one rail disposed longitudinally between the casting machine and the cooler, a carriage capable of moving along said rail and at least two hoists mounted on   said carriage and provided with gripping devices for supporting carry the bar.   2. Device according to claim 1, characterized in that said hoists are actuated by a single motor mounted on the carriage.   3. Device according to any one of the claims   1 and 2, characterized in that said devices   prehension are installed on a beam arranged longitudinally   under the said rail and on which are mounted the free of said hoists.   4. Device according to any one of the claims   1 to 3, characterized in that each preheating device   sion is a hook having at its lower part a surface capable of cooperating with the surface of a bar when it is lowered above this bar to rotate it and come   in the gripping position of the bar.   5. Device according to any one of the claims   1 to 4, characterized by the fact that it comprises, at the edge of the   colder, an inclined surface having a first portion of steep inclination on which the bar can be deposited by the gripping means and a second portion of weaker   inclination ending in a stop at the cooler.   6. Device according to any one of the claims   1 to 5, characterized in that it is arranged to also be able to transfer the casting dummies from a zone of   storage up to the casting machine.