JP3301576B2 - Leveler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leveler for correcting a warp of a coil material unwound from an uncoiler in a press line, and more particularly to a leveler for correcting a warp of a thick plate having a narrow width.

[0002]

2. Description of the Related Art A leveler used in a press line according to the prior art includes Japanese Patent Publication No. 6-55331, and warp of a coil material fed from an uncoiler is divided into a plurality of upper work rolls and a plurality of lower work rolls. Straightening is performed, and a coil material is supplied to a press machine by a feed roll provided on a leveler or a separately provided coil feeder.

[0003]

When the coil material to be supplied to the press machine is a thick plate having a small width, when the coil material is unwound from the uncoiler and unreeled, the warpage in the feeding direction of the coil material is also increased. In addition, warpage in the width direction is remarkably generated. Therefore, simply correcting the warpage of the coil material in the normal upper and lower work rolls cannot completely correct the warpage of the coil material in the width direction.If the coil material is supplied to the press machine in this state, feed accuracy and product accuracy will be affected. Exert.

Therefore, when the coil material is a thick plate having a narrow width, the press machine becomes a press line dedicated to blanking, and the surface of the blank material machined by the press machine is ground by a machine tool to form the blank material. Transfer processing is performed by another press line composed of a destack feeder and the like. In addition, the thickness of the coil material to be used is selected by assuming a machining allowance more than the minimum required thickness of the product, assuming that the surface of the blank material is ground by a machine tool.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to improve feed accuracy and product accuracy even when a coil material is a thick plate having a narrow width, and it is necessary to grind the surface of a blank material with a machine tool. It is another object of the present invention to provide a leveler for reducing a processing cost and supplying a coil material having a minimum necessary thickness to a press machine.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method for correcting the warpage of a coil material conventionally provided on a leveler, and a group of coil materials for the coil material. At least one first straightening roll that presses both ends in the width direction, and at least one first roll that presses a center portion in the width direction of the coil material and has a warp straightening amount adjustment mechanism.
At least one coil material width direction straightening device configured to correct the warpage of the coil material in the width direction.
It is installed on the leveler.

A first straightening roll portion constituting the coil material width direction straightening device includes a lever which is pivotally connected to a bracket erected on the frame of the leveler and one end of which is swingable, and
The other end of the lever that presses both ends in the width direction of the coil material by a cylinder connected to the lever and at least one first straightening roll that is rotatably connected with the other end, and presses the center portion in the width direction of the coil material, The second straightening roll portion having the warpage straightening amount adjusting mechanism includes a lower taper block slidable on the frame of the leveler by a push-pull bolt, and an upper taper block which can be moved up and down by being joined to the tapered surface of the lower taper block. And a plate fixed to the upper taper block and at least one second straightening roll rotatably provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS. FIG. 1 shows a configuration of a press line 10 according to an embodiment of the present invention. A leveler feeder 4 that integrates an uncoiler 2 on which the coil material 1 is mounted and a leveler 3 for correcting warpage of the coil material 1 fed from the uncoiler 2.
Thus, the coil material 1 having a fixed length is supplied into the press machine 5. The press machine 5 presses the coil material 1 supplied by the leveler feeder 4 using a mold (not shown) attached to the slide 5A and the bolster 5B.

FIG. 2 shows the structure of the main part of the leveler 3 of the leveler feeder according to one embodiment of the present invention. The basic structure other than the coil material width direction correcting device 11 is the same as the structure of a leveler such as Japanese Patent Publication No. 6-55331 in the related art.
In FIG. 2, the coil material 1 mounted on the uncoiler is:
The upper straightening roll 2 is guided by the first side guide 19A by the rotation of the uncoiler, and is guided by the first side guide 19A.
0 and the lower straightening roll 21 and the pinch roll 6
Supplied to

The upper straightening roll 20 of the coil material width direction straightening device 11 is connected to a bracket 23 erected on the frame 3A of the leveler 3 at one end by a rod 25 so as to be swingable, and at the other end of a lever 22 serving as a fulcrum. It is provided rotatably, lever 2
The coil material 1 is moved up and down by the cylinder 24 connected to the lower straight roll 2 to press both ends in the width direction of the coil material 1 on the lower straightening roll 21.

The pinch roll section 6 includes a sprocket 12
A lever 1 which is driven by a drive motor 14 via a chain 12A and a chain 12B, and which is pivotally connected at one end to a frame 3A of the leveler 3 by a rod 25.
And a lower pinch roll 6B rotatably supported by the frame 3A of the leveler 3 and rotatably connected to the other end of the lever 5 and raised and lowered by a cylinder 16 connected to the lever 15. 1 for work roll 7
To supply.

The work roll unit 7 includes a lower work roll group 7
B, a lower work roll group 7B, an upper work roll group 7A arranged in a staggered manner, and a cylinder portion 17 which moves up and down the upper work roll group 7A. The coil material 1 supplied from the pinch roll portion 6 Of the coil material 1
Is supplied to the feed roll unit 8. Feed roll section 8
Are the lower feed roll 8B and the upper feed roll 8A
And a cylinder portion 18 that moves up and down the upper feed roll 8A. The coil material 1 having a fixed length is guided by a second side guide 19B and supplied to a press machine.

FIG. 3 and FIG. 4 show a coil material width direction correcting device 1.
1 shows the structure of the main part. 3 and 4, the first side guide 1 is unwound from the uncoiler and fed out.
The coil material width direction correcting device 11 that corrects the widthwise warpage of the coil material 1 guided and supplied to 9A is provided at an upper straightening roll portion 30 provided at an upper portion of the leveler 3 and at a lower portion of the leveler 3. And a lower straightening roll unit 31.

A rod 25 provided on a bracket 23 erected on the frame 3A of the leveler 3 is provided on the upper straightening roll 30.
Levers 2 and 2 that pivotally connect one end to a fulcrum
2 are provided. Upper straightening rolls 20, 20 are rotatably connected to the other ends of the levers 22, 22 by pins 26, 26, and are fixed stroke length cylinders 24, 24 connected to the levers 22, 22 by pins 27, 27. The coil material 1 is raised and lowered, and both ends in the width direction of the coil material 1 are pressed to a predetermined fixed position.

Further, in the lower straightening roll portion 31 having the warpage straightening amount adjusting mechanism 32, a lower taper block 29 having a female screw portion 29A is provided inside a bracket 28 erected on the frame 3A of the leveler 3. . The bracket 23 is provided with a handle 35 having a fixing lever 34, and a rod 33 having a male screw portion 33A screwed into a female screw portion 29A of the lower taper block 29 to be connected.
The lower taper block 29 on the bracket 28 is slidable.

A plate 37 provided with a pin 38 for rotatably fitting the lower straightening roll 21 at the center in the width direction of the coil material is provided on a bracket 28 on the upper taper block 36 joined to the tapered surface of the lower taper block 29. Grooves 28A, 28A provided in the bracket 28
One end of each of the pins 38 guided to the
The springs 39 fixed to 8 are provided to prevent a displacement at the time of elevating and lowering by adjusting the correction amount of the lower correction roll 21.

As shown in FIG. 1, when the coil material 1 mounted on the uncoiler 2 is fed downward and forms a loop and the coil material 1 is supplied to the leveler 3, the coil material 1 is placed on the lower straightening roll 21. Thus, the cross-sectional shape of the coil material 1 is concave upward. Therefore, as shown in FIG.
The upper straightening rolls 20, 20 are pressed against both ends in the width direction of the coil material 1 by 4 and 24, and the fixing lever 34 is loosened.
By rotating the handle 35, the lower taper block 29 is slid to properly adjust the correction amount of the lower correction roll 21 with respect to the supplied coil material 1, and then the fixing lever 34 is fixed.

In this state, as shown in FIG. 2, the warp of the coil material 1 is further corrected by the upper and lower work roll groups 7A and 7B, and the coil material 1 is supplied to the press machine by the upper and lower feed rolls 8A and 8B. Thus, even when the coil material 1 is a thick plate having a small width, the warpage of the coil material 1 including the width direction of the coil material 1 can be corrected.

In this embodiment, as shown in FIG. 2, one coil material width direction correcting device 11 is provided in front of the pinch roll portion 6, but it is provided between the pinch roll portion 6 and the work roll portion 7, or Work roll unit 7 and feed roll unit 8
It may be provided between them. Also, according to the thickness of the coil material 1,
By providing a plurality of coil material width direction straightening devices 11 or changing the number and shape of the upper straightening rolls 20 and the lower straightening rolls 21 according to the width dimension of the coiled material 1,
Warpage correction can be further improved.

In this embodiment, the means for raising and lowering the upper straightening rolls 20, 20 for pressing both ends in the width direction of the coil material 1 are the cylinders 24, 24 having a fixed stroke length.
Upper straightening roll 2 as a servo actuator
The upper straightening roll part 30 and the lower straightening roll part 31 may be configured to be upside down in correspondence with the direction of the coil material 1 unwound from the uncoiler 2, or may be adjusted upside down. Components can be provided at the same time.

Further, since the upper straightening rolls 20, 20 are pushed up by the cylinders 24, 24 to be released from the coil material 1, it can be used in the same state as the leveler in the prior art. It can also handle cases where the thickness is small. Further, the coil material width direction correcting device 11 provided on the leveler 3 can be provided as a separate unit,
It can be used besides the leveler 3 in the press line 10.

[0022]

As is apparent from the above description, according to the present invention, in addition to the upper and lower work rolls for correcting the warpage of the coil material conventionally provided in the leveler, the width direction of the coil material can be improved. By equipping the leveler with a coil material width direction straightening device that corrects warpage, the feeding accuracy and product accuracy can be improved even when the coil material is a thick plate with a narrow width. From the press line,
Press processing can be performed in a transfer press line that can directly supply coil materials.

Further, even when the surface of the blank is required to be ground by a machine tool, it is possible to reduce the processing cost and to provide a leveler for supplying a coil material having a minimum required thickness to a press machine.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a press line according to an embodiment of the present invention.

FIG. 2 is a structural view of a main part of a leveler according to an embodiment of the present invention.

FIG. 3 is a front structural view of a main portion of the coil material width direction correcting device according to the embodiment of the present invention.

FIG. 4 is a top structural view of a main part of the coil material width direction correcting device according to the embodiment of the present invention.

[Explanation of symbols]

1 is a coil material, 2 is an uncoiler, 3 is a leveler, 3A is a frame, 4 is a leveler feeder, 5 is a press machine, 5A is a slide, 5B is a bolster, 6 is a pinch roll, 6A
Is an upper pinch roll, 6B is a lower pinch roll, 7 is a work roll section, 7A is an upper work roll group, 7B is a lower work roll group, 8 is a feed roll section, 8A is an upper feed roll, 8B is a lower feed roll, 10 Is a press line, 1
1 is a coil material width direction correcting device, 12A and 12B are sprockets, 13 is a chain, 14 is a drive motor, 15 is a lever, 16 is a cylinder, 17, 18 are cylinder portions, 19
A is the first side guide, 19B is the second side guide, 2
0 is an upper straightening roll, 21 is a lower straightening roll, 22 is a lever, 23 is a bracket, 24 is a cylinder, 25 is a rod, 26 and 27 are pins, 28 is a bracket, 28A is a groove, 29 is a lower taper block, and 29A is Female thread, 30
Is an upper straightening roll portion, 31 is a lower straightening roll portion, 32 is a warp straightening amount adjusting mechanism, 33 is a rod, 33A is a male screw portion,
34 is a fixing lever, 35 is a handle, 36 is an upper tapered block, 37 is a plate, 38 is a pin, 39 is a spring,
It is.

Claims (1)

(57) [Claims] 1. A coil material which is unwound from an uncoiler and straightened by a plurality of upper work rolls and a plurality of lower work rolls, and is fed by a feed roll provided on a leveler or a separately provided coil feeder. Leveler to supply press to the press machine, the width direction of the coil material
A first straightening roll portion provided on the concave surface side of the coil material when the warp occurs and pressing both ends in the width direction of the coil material; and a central portion in the width direction of the coil material provided on the convex surface side of the coil material And a second having a warpage correction amount adjusting mechanism.
A leveler provided with at least one coil material width direction straightening device that corrects the widthwise warpage of the coil material formed by the straightening roll portion , wherein the coil material width direction straightening device is mounted on a frame of the leveler.
The bracket to be installed and one end are swingably connected to form a fulcrum.
The coil material is made up of a lever
The other end of the lever that presses both ends in the width direction of the
And at least one first straightening roll connected to the
Slidable on the frame of the leveler by the first straightening roll part and the push-pull bolt.
Contact the lower taper block and the taper surface of the lower taper block
The upper taper block and the upper taper block
Plate and the coil material in the width direction
At least one second straightening roll provided at the center
Lowering the second straightening roll, that is, vertically tapering
A spring that biases the lock side, and a warpage correction amount adjustment composed of
And a second straightening roll having an adjusting mechanism.
Characterized press machine leveler.