JP4262079B2 - Steel plate tip conveyor - Google Patents

Description

  The present invention prevents the leading end of the steel sheet from sagging during conveyance, and reliably and efficiently carries it to a predetermined position on the welding machine entrance side so as to weld the leading end of the steel sheet to the trailing end of the preceding steel sheet. It is related with the conveyance apparatus of the steel plate front-end | tip which can do.

  For example, in continuous cold rolling equipment, pickling equipment, etc., it is necessary to weld the rear end of the preceding cold-rolled steel sheet and the front end of the subsequent cold-rolled steel sheet. In this case, the front end of the steel sheet unwound from the payoff reel is supplied to the pinch roll on the entry side of the welding machine, and the rear end of the cold rolled steel sheet preceding by this pinch roll and the front end of the steel sheet unwound from the payoff reel Accurate welding is performed by aligning.

However, it is good if the payoff reel and the welding machine are directly connected, but there may be a distance between the payoff reel and the welding machine due to restrictions on the layout of the factory and the influence of equipment construction. If you try to feed the tip of the steel plate that has been unwound from the welder or a pinch roll on the inlet side of the welder, the tip of the steel plate will meander or hang down while the steel plate is being transported, and the welder or welder inlet side There was a problem that it could not be fed well into the pinch roll. In the hot rolling facility, for example, as shown in Patent Document 1, a rolling material joining device having a path switching device has been proposed, and a point of running the rolled material on a roller table is disclosed. However, it cannot be applied to cold rolling equipment that handles thin steel plates.
JP-A-9-103810

  The present invention solves the conventional problems as described above, prevents the leading end of the steel sheet from sagging during conveyance, and welds the leading end of the steel sheet to the trailing end of the preceding steel sheet. The present invention has been completed for the purpose of providing a steel plate front end conveying device that can reliably and efficiently carry in to a predetermined position.

In order to solve the above-described problems, the steel sheet tip transport apparatus according to the present invention includes a clamp device that clamps the tip of the steel sheet unwound from the payoff reel between the payoff reel and the welding machine. In the steel plate tip transport device provided with a transfer mechanism that travels from the payoff reel side to the welding machine while the tip portion of the steel plate is clamped by the device, the clamp device is a cross section perpendicular to the longitudinal direction of the steel plate. When viewed, the steel plate is clamped to be curved .

  In the present invention, a transfer mechanism is provided between the payoff reel and the welding machine to travel from the payoff reel side to the welding machine while the leading end of the steel plate is clamped. Or it can prevent reliably drooping.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  The drawings show the case where the present invention is applied to a welding process in a cold rolling process. FIG. 1 is a front view showing the entire conveying line, FIG. 2 is a side view showing a conveying apparatus, and FIGS. FIG. 5 is an explanatory view showing a clamped state of the steel plate, FIG. 5 is a front view showing the conveying device immediately after the payoff reel, and FIG. 6 is a front view showing the conveying device immediately before the pinch roll.

  In the figure, 1 is a payoff reel, 2 is a welder, 3a is a steel plate rewound from the payoff reel 1, 3b is a preceding steel plate set in the welder 2, and 4 is a pinch provided on the entry side of the welder 2. Rolls 5 are transport paths on which table rolls provided between the payoff reel 1 and the welding machine 2 are installed.

  And in this invention, the clamp apparatus 10 which clamps the front-end | tip part of the steel plate 3a unwound from the pay-off reel 1 is mounted between the said pay-off reel 1 and the welding machine 2, The front-end | tip part of the steel plate 3a is clamped by this clamp apparatus 10 The structure is provided with a transfer mechanism 11 that travels from the payoff reel 1 side toward the welding machine 2 in a clamped state.

  That is, if there is a distance between the payoff reel 1 and the welding machine 2, when the tip of the steel plate 3 a rewound from the payoff reel 1 is fed into the pinch roll 4 on the entry side of the welding machine 2, the steel plate 3 a is being conveyed. However, the steel plate tip hangs down and cannot be fed into the pinch roll 4 well, but the steel plate runs from the payoff reel 1 side toward the welder 2 with the tip 3a of the steel plate clamped. Since the transfer mechanism 11 is provided, and the leading end 3a of the steel plate is pulled out toward the welding machine 2 by the transfer mechanism 11, the leading end 3a of the steel plate is prevented from meandering or sagging during conveyance, and a predetermined position of the pinch roll 4 is prevented. It will be possible to send it in securely.

  Here, the transfer mechanism 11 will be described. As shown in FIG. 2, wheels 12 are provided on both sides of the transfer mechanism 11 and are guided by rails 6 laid along the conveyance path 5 to pay off reels. 1 and the welding machine 2 can be freely moved. The transfer mechanism 11 is configured to travel by a motor 13 (see FIG. 5).

  In addition, a clamp device 10 that clamps the front end portion of the steel plate 3 a that has been rewound from the payoff reel 1 is mounted on the lower front portion of the transfer mechanism 11. The clamping device 10 has a pair of upper and lower clampers 10a and 10b on both sides, and is configured to clamp the steel plate 3a between the clamper 10a on the fixed side and the clamper 10b on the moving side. As shown in FIG. 2, a vertical folding guide 14 is provided at the center of the clampers 10a and 10a on the fixed side so as to protrude downward so that the steel plate 3a is stably curved at the center. The vertical folding guide 14 is configured such that the steel plate 3a is stably bent at the center portion without causing folding.

  Further, as shown in FIG. 3, the clamp device 10 is configured to clamp the steel plate 3a so as to be bent when a cross section in a direction perpendicular to the longitudinal direction of the steel plate 3a is viewed. This increases the strength in the longitudinal direction as compared with clamping in a flat state, and reliably prevents the tip portion of the steel plate 3a from sagging due to vibration during conveyance. In the illustrated example, the central portion of the steel plate is curved so as to form a downward arc, but it is needless to say that the central portion of the steel plate may be curved so as to form an upward arc.

  As shown in FIG. 4, the clamp device 10 is configured to clamp the steel plate 3 a that protrudes forward so that the front end of the steel plate 3 a faces obliquely upward. Thus, by conveying the front-end | tip part of the steel plate 3a in the state which faced diagonally upward, it has prevented reliably that the front-end | tip part of the steel plate 3a hangs down.

  As shown in FIG. 5, a lift table 20 that lifts the tip of the steel plate 3 a obliquely upward when the clamp device 10 clamps the tip of the steel plate 3 a is installed on the exit side of the payoff reel 1. ing. The lift table 20 is configured to lift the tip of the steel plate 3a obliquely upward by the vertical movement of the table member 21, and prevents the steel plate from drooping before the steel plate 3a is clamped by the clamping device 10. It is configured.

In this way, the leading end of the steel plate 3a is guided to the transfer mechanism 11 and pulled out to the pinch roll 4 on the entry side of the welding machine 2, but is pulled out in a state where the leading end of the steel plate 3a is clamped by the clamping device 10. Therefore, as described above, the tip of the steel plate 3a is prevented from sagging.
On the other hand, as shown in FIG. 6, the pinch roll 4 has a fixed roll 4a and a moving roll 4b that moves up and down, and the moving roll 4b is lifted during standby, so that the leading end of the steel plate 3a is accepted. Has been prepared. And when the front-end | tip part of the steel plate 3a is inserted, the moving roll 4b descend | falls and it is comprised so that it may clamp firmly between the fixed rolls 4a. As a result, the leading end of the steel plate 3a is always accurately aligned with the welding machine 2, so that welding is performed with high accuracy without causing a positional deviation from the preceding steel plate 3b set in the welding machine 2. It will be.

  As is apparent from the above description, the present invention includes a clamp device 10 that clamps the tip of the steel plate 3a unwound from the payoff reel 1 between the payoff reel 1 and the welding machine 2, and the clamp device 10 By providing the transfer mechanism 11 that travels from the payoff reel 1 side toward the welding machine 2 while the front end portion of the steel plate 3a is clamped, the front end portion of the steel plate 3a does not meander or hang down during transportation. Therefore, the steel sheet tip can be accurately, reliably and efficiently carried into the pinch roll 4 on the welding machine entrance side. As a result, welding is firmly performed between the rear end of the preceding steel plate 3b.

It is a front view which shows the whole conveyance line. It is a side view which shows a conveying apparatus. It is explanatory drawing which shows the clamped state of a steel plate. It is explanatory drawing which shows the clamped state of a steel plate. It is a front view which shows the conveying apparatus immediately after a payoff reel. It is a front view which shows the conveying apparatus in front of a pinch roll.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pay-off reel 2 Welding machine 3a Steel plate 3b rewinded from pay-off reel Prior steel plate set to welding machine 4 Pinch roll 5 Conveyance path 6 Rail 10 Clamping device 10a Clamper 10b Clamper 11 Transfer mechanism 12 Wheel 13 Motor 20 Lift table

Claims (3)

A clamp device is mounted between the payoff reel and the welder to clamp the tip of the steel sheet unwound from the payoff reel, and the tip of the steel plate is clamped by the clamp device toward the welder from the payoff reel side. In the transport device at the front end of the steel plate provided with a transport mechanism that travels in the direction of the steel plate, the clamp device is clamped so that the steel plate is curved when a cross section perpendicular to the longitudinal direction of the steel plate is viewed. Conveying device at the tip of the steel plate. The conveying apparatus of the front-end | tip of a steel plate of Claim 1 which clamps so that the front-end | tip part of the steel plate which protruded to the front side may face diagonally upward . 3. A transport apparatus for a steel sheet tip according to claim 1 or 2, wherein a lift table is installed on the exit side of the payoff reel to lift the steel sheet tip portion obliquely upward when the steel plate is clamped by the clamping device. .

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