JPH09150997A - Cradle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a cradle even for a coil material heavy in weight, wide in width and thick in thicness by horizontally laying at least a pair of horizontal hanging members back and forth between both inner side faces of a frame erected oppositely to a width guide and providing fixed and swung frames. SOLUTION: Supporting rolls 7a and 7b for placing and supporting a coil material C swing a swinging frame 8 around a pivotally attaching shaft 16 in a coil material width direction. That is, when the supporting rolls 7a and 7b are rotary-driven, the coil material C is rotated in the direction of an arrow (b) and thus the coil material C is sent out. Both side faces of the coil material C are guided by the inner surfaces of width guides 2a and 2b so as to keep constant the position of the coil material in the width direction. By the rotations of the supporting rolls 7a and 7b, the supporting rolls 7a and 7b are moved while swinging the swinging frame 8. Thus, a cradle is suitably used for unwinding the coil material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cradle in which a coil material for press working is placed on at least two rotatable support rolls and the coil material is unwound while rotating on the support rolls. .

[0002]

2. Description of the Related Art Generally, in a coil material unwinding device, a coil material placed on a support roll is guided by being sandwiched by a pair of width guides on both sides in the width direction of the coil material. Direction, and the cradle type with a structure that can approach and separate so that the distance between the width guides can be adjusted according to the material width of the coil material, and the hole part at the center of the coil material for this cradle. There is a mandrel type structure in which the coil material is held on the mandrel by inserting the mandrel into the mandrel and expanding the mandrel so that the coil material can be rotated together with the mandrel. This mandrel type has the drawbacks that the mandrel insertion and enlargement / reduction operations are troublesome, and the structure of the mandrel enlargement / reduction device is complicated and expensive.

On the other hand, the cradle is characterized in that the operation is simple and the structure of the apparatus is simple because it is an operation of merely placing the coil material on the support roll. However,
It is difficult for the cradle to make the center axis of the coil material and the center axis of the support roll exactly parallel, and the parallelism between the center axis of the coil material and the center axis of the support roll is very small. Even if there is such an error, the coil material will be biased in one direction. Therefore, in order to guide the width direction of the coil material to a constant position, the coil material slides on the support roll in the width direction to keep the width direction of the coil material constant. In order to slide a heavy coil material in the width direction, a force that strongly pushes the width guide acts, and a load of 5% or more of the weight of the coil material acts between the width guide and the coil material.

That is, in the conventional coil material unwinding cradle, when the rotation axis center line of the coil material and the rotation axis center line of the support roll are not parallel, the width of the coil material is increased by the rotation of the support roll. It will shift to one side in one direction. In such a state, if the width direction of the coil material is to be held at a fixed position, the coil material must be slid in the width direction with respect to the support roll. When the weight of the coil material is heavy, the force required for sliding is large, and since the coil material must be pushed in the width direction while rotating, the friction resistance between the coil material and the width guide is large,
To unwind the coil material, the force for rotating the coil material becomes excessive.

Further, in such a cradle, even if the rotation axis center line of the coil material and the rotation axis center line of the support roll are parallel to each other, there is a phenomenon that the coil material meanders in the width direction due to a manufacturing error of the coil material. is there. Therefore, in order to uniformly guide the position of the coil material in the width direction by the width guide, the weight of the coil material is small, the coil width is narrow, and the plate thickness is limited.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide a cradle which can be applied to a coil material having a large weight, a large coil width, and a thin plate thickness. It is in.

[0007]

In order to achieve the above object, in a cradle according to the present invention, a pair of width guides for supporting both widthwise side surfaces of a coil material for press working and a vertical guide by the width guides. In a cradle provided with at least a pair of support rolls that rotatably support the placed coil material so as to be unwound toward the next step, between both inner side surfaces of a frame that is erected to face the width guide. At least a pair of horizontal members are horizontally mounted in the front and rear, and an adjusting shaft for adjusting the width guide toward and away from the widthwise side surfaces of the coil member is orthogonal to the frames and the width guides. One end of a fixed frame that is attached and one end of a frame structure that has both side surfaces that are below the width guide and the adjustment shaft and that rotatably supports the support roll. One of the intermediate portion of the Kiyokoka member is made of a swingably pivotally mounted swing frame comprising. Further, a guide rail is provided on the other horizontal member facing the one horizontal member on which the swing frame is pivotally mounted, and a guide rail is provided at an intermediate portion of the swing frame on the other horizontal member side. A roller that rolls on a rail is rotatably provided. Next, the operation of the present invention will be described. In order to hold the coil material placed vertically on the rotatable support roll as a guide, a pair of width guides were approached to both sides of the coil material in the width direction via an adjusting shaft to keep the width position of the coil material constant. In this state, the support roll is rotated to feed the coil material toward the next step. When the support roll is rotated, one end of the swing frame of the frame structure pivotally attaches to the intermediate portion of the horizontal member of the fixed frame, and the swing frame of the coil member swings around the pivot portion. Automatically match the center line with the center line of the rotation axis of the support roll. That is,
The rotation axis center line of the support roller on which the coil material is placed is automatically corrected so as to be parallel to the rotation axis center line of the coil material. Further, when the coil material tends to meander in the width direction, the support frame can be moved in the coil material width direction by the swing frame, so that the force for pressing the width guide can be reduced. Further, according to claim 2, the swing frame pivotally attached at one end to one of the horizontal members swings by a roller provided at the other end that smoothly rolls on the guide rail of the other horizontal member. The width guide pressing force by the coil material is reduced as much as possible, and automatic correction of parallel holding of the rotation axis center line of the support roller and the rotation axis center line of the coil material is quickly and easily performed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described in detail with reference to the drawings shown in Examples. 1 to 3
FIG. 2 shows a preferred embodiment of the cradle according to the present invention, and is a plan view showing the cradle in a state where the coil material is installed on the support roll without unwinding the coil material in FIG. FIG. 3 is a front view showing the cradle in which a coil material to be unwound toward the next step is installed in FIG. 1, and FIG. 3 is a plan view showing the cradle in which the coil material is unwound in FIG.

The cradle 1 of the present invention comprises a pair of width guides 2 which are opposed to both side surfaces of the coil material C placed in a vertical direction in the width direction and guide-hold the coil material C on both sides in the width direction which can approach and separate from each other.
a, 2b and a pair of parallel frames 3a, 3b facing the width guides 2a, 2b and standing upright with an appropriate interval.
In order to integrally form the pair of frames 3a,
3b, which are located at the lower front and rear of the forming direction of 3b,
A pair of horizontal members 4a, 4b fixed laterally between both inner side surfaces of 3b and frames 3a, 3b between which the horizontal members 4a, 4b are interposed and face each other. Has a fixed frame 6 configured such that the width guides 2a and 2b can be moved toward and away from both side surfaces in the width direction of the coil material C by the width guide adjustment shafts 5a and 5b that are orthogonally inserted into the width direction. Below the width guides 2a and 2b and the width guide adjusting shafts 5a and 5b, a pair of rotatable support rolls 7a and 7b that rotatably support the coil material C so as to be drawn out toward the next step (not shown), and the support rolls 7a. , 7b to form a rectangular frame structure having both side surfaces that hang the coil member C in the direction of the center line of the rotation axis of the coil material C, and a swing frame 8 configured to swing with respect to the fixed frame 6. You have me.

The pair of width guides 2a, 2b are provided above the swing frame 8, and width guide adjusting shafts parallel to the horizontal members 4a, 4b are provided at both front and rear ends in the forming direction of the width guides 2a, 2b. 5a and 5b are those width guides 2a and 2b
And the width guide adjusting shafts 5a and 5b.
Width guide adjusting shaft nuts 9a, 9b, 9c,
9d is fixed.

The width guide adjusting shafts 5a and 5b are provided with left and right reverse screws at the center of the material axis direction, and these threaded portions have width guide adjusting shaft nuts 9a and 9a of the width guides 2a and 2b.
A pair of frames 3a, 3b in which fixed shaft 6 is erected while being screwed into 9b, 9c, 9d.
Bearings 10a, 10b, 10 fixed to both outer side surfaces of the
It is pivotally attached to c and 10d.

Further, the width guide adjusting shafts 5a and 5b have bearings 10b and 10d of the frame 3b on one operation surface side of the pair of frames 3a and 3b and a nut 9b for the width guide adjusting shaft of the one width guide 2b. , 9d, the sprocket wheels 11a, 11b are fixed so as to rotate integrally,
A chain 12 is stretched between the sprocket wheels 11a and 11b.

A width guide adjusting handle 13 is fixed to the tip of one width guide adjusting shaft 5b protruding outward from the frame 3b on the operation surface side. Moreover, the horizontal member 4
The a and 4b are provided with a guide rail 14b in the forming direction at a middle portion in the longitudinal direction of one of the horizontal members 4a so as to guide rolling of a roller 14a described later, and the other horizontal member 4a.
A pivot shaft support fitting 17 having a pivot shaft 16 engaged with a pivot hole 15 to be described later is attached and fixed to an intermediate portion in the longitudinal direction of b.

This pivotal shaft support fitting 17 is provided on the horizontal member 4b.
The pivot shaft 16 that extends toward the width guides 2a and 2b in the longitudinal middle portion of the
Is fixed. The swing frame 8 is composed of side surfaces 8a, 8b forming long sides and side surfaces 8c, 8d forming short sides of the rectangular frame structure.
An attachment portion for a roller 14a, which will be described later, is formed at c, and a perforation portion, which is described later, for a pivot hole 15 is formed at the side surface 8d.

The oscillating frame 8 has a pair of support rolls 7a and 7b rotatably mounted orthogonally to both side surfaces 8a and 8b forming long sides, and corresponds to the shaft mounting portions of the support rolls 7a and 7b. Support roll bearings 18a, 18a ', 18b, 18b' are respectively fixed to both side surfaces 8a, 8b of the long side. The attachment portion of the roller 14a on the side surface 8c of the short side is formed so that the roller 14a projecting outward of the frame structure and positioned parallel to the side surface 8c can be axially attached to the middle portion of the side surface 8c in the longitudinal direction. Pivot hole 1 on side 8d of side
The perforated portion 5 has a horizontal member 4 at the middle portion in the longitudinal direction of the side surface 8d.
A pivotally supporting hole 15 that engages with a pivot shaft 16 provided in a pivot shaft support fitting 17 of b is formed so as to be drilled.

Further, a support roll drive motor 19 for rotating and driving a pair of support rolls 7a, 7b is mounted on the side surface 8a of the long side, and the sprocket wheel 19a is stopped on the drive shaft of the support roll drive motor 19. It is worn. In addition, the sprocket wheel 7 is attached to the support rolls 7a and 7b at one end shafts of the respective support rolls 7a and 7b.
a ', 7b', 7b "are fixed to each other, and the sprocket wheel 7b" is connected to the sprocket wheel 19a of the support roll drive motor 19 via the chain 20a.
The sprocket wheel 7b ', which is drivingly connected to the sprocket wheel 7b "and is coaxially fixed to the chain 2,
It is drivingly connected to the sprocket wheel 7a 'via 0b.

The fixed frame 6 is provided with the width guide 2
The coil material C is held vertically by a and 2b and the unwinding thereof is guided, and the swing frame 8 rotatably supports the coil material C by the support rolls 7a and 7b and rocks with the fixed frame 6. The moving frame 8 is the pivot shaft 1
6 and the pivot hole 15 so as to be swingably connected.

In the cradle 1 of the present invention having such a structure, the width guide adjusting handle 13 is manually rotated in advance so as to separate the width guides 2a and 2b from each other, and the width guide adjusting shaft 5b is rotated, and at the same time, the chain is adjusted. The width guide adjusting shaft 5a is rotated via 12 to open the width guides 2a and 2b, and the coil material C is received. The coil material C is carried and stored in the width guides 2a and 2b, and the support roll 7
It is mounted on a and 7b.

As shown in FIG. 2, the coil material C housed in the width guides 2a and 2b and placed on the support rolls 7a and 7b drives the support roll drive motor 19 and passes through the chain 20a. Drive shaft sprocket wheel 1
9a → sprocket wheel 7b ″ of support roll 7b,
Then, via the chain 20b, drive transmission is performed between the sprocket wheel 7b 'of the support roll 7b and the sprocket wheel 7a' of the support roll 7a, and the support rolls 7a, 7
b is rotated in the direction of arrow a, and the coil material C on the support rolls 7a and 7b is rotated in the direction of arrow b.

The coil material C is unrolled while being driven by the rotation of the support rolls 7a and 7b, toward the next step (not shown). At this time, the rotating coil material C
There is a slight error in the parallelism between the rotation axis center line X of the rotation roll and the rotation axis center line Y of the support rolls 7a and 7b, or the rotation axis center line X of the rotating coil material C and the rotation of the support rolls 7a and 7b. Even if the axis center lines Y are parallel to each other, the coil material C may meander in the width direction due to a manufacturing error of the coil material C.

In any case, the coil material C tries to shift toward either of the width guides 2a and 2b, and the coil material C slides on the support rolls 7a and 7b in the width direction of the coil material C and one of them is moved. Attempt to strongly press the width guide 2a or 2b. In the case of a particularly heavy coil material, the width guide 2
5% of the weight of the coil material due to the force that strongly presses a or 2b
The above load acts between the width guide 2a or 2b and the coil material C.

In such a case, the support rolls 7a and 7b for mounting and supporting the coil material C swing the swing frame 8 around the pivot shaft 16 in the coil material width direction as shown in FIG. That is, when the support rolls 7a and 7b are rotationally driven in the direction of arrow a shown in FIGS.
The coil material C is fed out by rotating in the direction. When both side surfaces of the coil material C are guided by the inner side surfaces of the width guides 2a and 2b so that the position of the coil material C in the width direction becomes constant, the support rolls 7a and 7b are formed.
By the rotation in the direction of arrow a, the supporting rolls 7a and 7b move while swinging the swing frame 8 so as to swing in the direction of arrow c in FIG.

When the support rolls 7a and 7b move to the state shown in FIG. 1, the support rolls 7a and 7b do not move. The state of FIG. 1 shows a state in which the rotation axis center line X of the coil material C and the rotation axis center lines Y, Y of the support rolls 7a, 7b are parallel to each other. When the coil material C meanders in the width direction, When the support rolls 7 a and 7 b move by the swing of the swing frame 8, the coil material C moves toward the width guide 2.
The force of pushing one side or the other side of a and 2b is reduced. Therefore, the support rollers 7a, 7 on which the coil material C is placed
The rotation axis center line Y of b is automatically corrected so as to be parallel to the rotation axis center line X of the coil material C, and the coil material C tends to meander in the width direction. At this time, by making the support rolls 7a and 7b movable in the width direction of the coil material, the force for pressing the width guides 2a and 2b can be reduced.

Moreover, the swing frame 8 whose one end is pivotally attached to the one horizontal member 4b has the roller 14 provided at the other end which smoothly rolls on the guide rail 14b of the other horizontal member 4a.
The swing is made smooth by a.

[0025]

As described above, according to the present invention, the force required to oscillate the oscillating frame is only applied to the width guide, and the center line of the rotating shaft of the coil material and the center line of the rotating shaft of the support roll are sewn. Is not parallel to each other, the coil material and the support roll are automatically corrected so that the center line of the rotation axis is parallel to each other, so that the pressing force of the coil material against the width guide is reduced. Further, even when the coil material meanders in the width direction due to the manufacturing error of the coil material, the supporting roll swings by the swing frame, so that the pressing force of the coil material on the width guide is reduced and the conventional cradle is reduced. The coil material that cannot be handled, that is, the coil material having a large weight, a large coil width, and a thin plate thickness, can be sufficiently applied as a coil material unwinding cradle. Further, according to claim 2, the width guide pressing force of the coil material is reduced as much as possible, and automatic correction of parallel holding of the rotation axis center line of the support roller and the rotation axis center line of the coil material is quickly and easily performed. Eggplant

[Brief description of the drawings]

FIG. 1 is a plan view showing an aspect in which a swing frame is not swinging in a state where a rotation axis center line of a coil material and a rotation axis center line of a support roll are parallel to each other in a cradle of the present invention.

FIG. 2 is a front view showing an aspect in which the coil material is unwound in the cradle of the present invention.

FIG. 3 is a plan view showing a mode in which the oscillating frame is in an oscillating state in a state in which the center line of the rotating shaft of the coil material and the center line of the rotating shaft of the support roll are slightly different and slightly inclined in the cradle of the present invention. .

[Explanation of symbols]

 1 Cradle 2a, 2b A pair of width guides 3a, 3b A pair of frames 4a, 4b A pair of horizontal members 5a, 5b A width guide adjustment shaft 6 A fixed frame 7a, 7b A pair of support rolls 8 Swing frames 8a, 8b Both side surfaces 8c and 8d formed Both side surfaces forming a short side 14a Roller 14b Guide rail 15 Pivot hole 16 Pivot axis C Coil material X Coil material rotation axis center line Y Support roller rotation axis center line

Claims (2)

[Claims] 1. A pair of width guides for supporting both widthwise side surfaces of a coil material for press working, and a rotatably supported coil material longitudinally placed by the width guides so as to be unwound toward the next step. In the cradle including at least a pair of support rolls, at least a pair of lateral members are laterally laid between the inner side surfaces of the frame that is erected to face the width guide, and the width guide is A fixed frame, in which adjustment shafts capable of approaching and separating from the widthwise side surfaces of the coil material are inserted through the frames and the width guides at right angles, and below the width guides and the adjustment shafts, One end of a frame structure having both side surfaces for rotatably supporting the support roll is composed of a swing frame pivotally attached to one intermediate portion of the horizontal member so as to be swingable. Cradle characterized by. 2. A guide rail is provided on the other lateral member opposite to the one lateral member on which the oscillating frame is pivotally mounted, and an intermediate portion of the oscillating frame on the other lateral member side. The cradle according to claim 1, wherein a roller that rolls on the guide rail is rotatably provided on the guide rail.