JP2004034152A - Coil strip supply arrangement for thin plate of high-speed press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coil strip supply arrangement which can stably supply coil strips when the width of coil shape is relatively wide and the plate is extremely thin as the speed of the press increases recently. <P>SOLUTION: The coil strip supply arrangement comprises an uncoiler for supplying the coil strip, a damper roll to be wrapped with the coil strip uncoiled from the uncoiler and a urethane roll and press roll consisting of at least a pair and is arranged to straighten the curl of the coil strip by the urethane roll and the press roll, then to loop the coil strip to a U shape, to shift the coil strip horizontally and to supply the coil strip to a roll feeder. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
[Industrial applications]
The present invention is a coil material supply device that corrects a coil material wound into a coil shape on an uncoiler and supplies the coil material to a press. In particular, in conjunction with the recent increase in press speed, the width of the coil shape is relatively wide, and The present invention relates to an apparatus capable of stably supplying a material having a small thickness.
[0002]
[Prior art]
Conventionally, an apparatus for supplying a thin plate at a high speed has not yet been established as a specialized technique for various reasons.
For example, as shown in FIG. 4, after the coil 102 unwound from the uncoiler 101 is corrected by the leveler 103, a loop 105 is formed in an S-shape by the guide 104, and the roll 105 passes through the horizontal guide 106. It is supplied to a press (not shown) by a feeder (not shown). At this time, the coil thickness is currently commonly used in the range of 0.2 to 0.6 mm.
[0003]
Therefore, in the above-mentioned commonly used range, although it can sufficiently cope with the high-speed press, various problems occur when a material having a smaller coil thickness (0.2 mm or less) or a very thin plate thickness of 0.15 mm to 0.1 mm is used. Occurs.
[0004]
[Problems to be solved by the invention]
That is, the formation of the loop in the latter half portion 107 of the S-shaped loop 105 becomes too large, and the fluttering is severe. Particularly at the time of rising, the material is deformed slightly and the supply becomes almost impossible.
[0005]
Furthermore, the leveler 103 requires not only a delicate gap adjustment but also an unnecessarily high accuracy to be compatible with an extremely thin plate, and the leveler itself becomes expensive.
[0006]
Further, a loop control 108 is provided between the uncoiler 101 and the leveler 103. However, if the pressing force of the pinch roll is increased, the material adversely affects the material. There is a problem such as one-sided stretching.
[0007]
The present invention has been made in view of the above-described circumstances, and as a countermeasure for speeding up the press and making the coil material extremely thin, a point which cannot be solved by the conventional common use or extension cannot be solved, and a dedicated supply device is used. And to stably supply the coil material to the press.
[0008]
[Means for Solving the Problems]
The present invention relates to a coil material supply device for correcting a coil material wound in a coil shape on an uncoiler and supplying the coil material to a press, wherein the uncoiler for supplying the coil material and the coil material unwound from the uncoiler are wound around the device. And at least a pair of urethane rolls and presser rolls that take up without locally applying pressure to the coil material. After correcting the curl of the coil material with the urethane roll and the presser roll, a U-shaped And feeds the roll to a roll feeder after moving horizontally.
[0009]
[Action]
Therefore, according to the present invention, the coil material unwound from the uncoiler is controlled in the vertical position by the damper roll, the shock generated by the high-speed rotation of the press is reduced, and the coil material is straightened when passing between the urethane roll and the presser roll. Then, the wound coil material is flattened to form a loop with a small radius of curvature at the U-shaped loop portion, and is stably supplied to the press by the roll feeder.
[0010]
【Example】
An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an uncoiler having no driving device, and an uncoiler drum 3 is driven to rotate by a coil material 2 which is unwound by another driving device described later. Reference numeral 4 denotes a brake attached to the drum 3, which is analog-controlled by an electropneumatic regulator.
[0011]
Reference numeral 5 denotes a damper roll, which has a bearing 8 that supports the unwound coil material 2 circumferentially and is rotatable by itself and that can slide along a guide 7 provided on a column 6 that stands upright. Reference numeral 9 denotes an air cylinder that connects the bearing 8 with its tip metal fitting, expands and contracts a piston, and slides up and down. The air cylinder 9 has a function of controlling the strength and vertical position of the damper with an analog signal.
[0012]
Numeral 10 is a urethane roll having a diameter as large as possible. The urethane roll 10 is supported by a lifting frame 11 after the damper roll 5 and has a variable speed drive unit driven by an inverter motor. .
[0013]
The lifting frame 11 can be slid up and down along a guide 15 of a main body frame 14 by a speed reducer driving jack 13 having a manual handle. Reference numeral 16 denotes a screw mechanism for adjusting the pressing force of the pressing roll 12.
[0014]
The coil material 2 sandwiched between the urethane roll 10 and the presser roll 12 extends rearward, forms a U-shaped loop 17, and then extends horizontally to be sent to a roll feeder 18. An analog sensor 19 is provided in the U-shaped loop forming area and detects and controls the loop shape in a non-contact manner.
[0015]
The roll feeder 18 can perform high-speed intermittent feeding in synchronization with the rotation speed of a press (not shown), and has an AC servo drive unit, an entrance guide unit, an exit guide plate unit, and the like.
[0016]
The apparatus of the present invention uses a touch panel arranged on a control panel surface (not shown) to read in advance data on the type of material, that is, the thickness and width of the material, according to, for example, the number of rotations and the feed amount of the press. If so, all can be automatically driven by operation on the touch panel.
[0017]
In another embodiment shown in FIG. 2, the coil material 2 is taken out of the uncoiler 1 and sent out to the damper roll 5. On the way, a U-shaped loop 17 is formed at the upper part via an intermediate roll 20, a first urethane roll 21 and a press roll 22, and a second urethane roll 23 and a press roll 24. The same components as those of FIG. 1 in other configurations are denoted by the same symbols.
[0018]
According to the present invention, the coil material 2 unwound from the uncoiler 1 is controlled in the vertical position by the damper roll 5, and when passing between the urethane roll 10 and the presser roll 12 while mitigating the shock due to the rotation of the press, Due to the correction force generated by the difference in friction between the urethane roll 10 and the presser roll 12, the coiled coil material 2 is flattened, and a U-shaped loop 17 is formed immediately before the coil material 2 is shifted horizontally at the upper part. Is the minimum radius of curvature due to the inherent properties of the material, and is then sent to a roll feeder.
[0019]
【The invention's effect】
Since the configuration of the present invention is as described above, even if the rotation speed of the press is high, the thin sheet coil material after straightening does not flap in the loop forming portion, is synchronized with the press, and can be supplied stably. is there.
[0020]
Further, the roll for correcting the coil material does not require an expensive roll configuration using a conventional leveler, and is extremely economical because it uses a urethane roll sufficient for correcting an ultrathin plate.
[0021]
In addition, by providing a damper roll between the uncoiler and the urethane roll straightening section, it can sufficiently absorb the shock associated with high-speed feeding, preventing the hip fracture phenomenon that cannot be solved by the conventional control method. Can be prevented.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of the present invention.
FIG. 2 is a front view showing another embodiment of the present invention.
FIG. 3 is a plan view of FIG. 2 showing the embodiment.
FIG. 4 is a front view showing a conventional example.
[Explanation of symbols]
1. Uncoiler 2. Coil material4. Brake 5. 5. Damper roll Column 9. Air cylinder10. Urethane roll 11. Elevating frame 12. Pressing roll 17. U-shaped loop Roll feeder 19. Analog sensor

Claims (1)

In the coil material supply device that corrects the coil material wound in the coil shape on the uncoiler and supplies the coil material, the uncoiler that supplies the coil material, and a damper roll that winds the coil material unwound from the uncoiler, It is composed of at least a pair of urethane rolls and presser rolls. After correcting the curling of the coil material with the urethane rolls and presser rolls, a loop is formed in a U-shape, and it is shifted horizontally and supplied to a roll feeder. A high-speed press coil material supply device for thin plates.

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