JPH08323413A - Roll device for preventing wrinkle - Google Patents

Abstract

PURPOSE: To suppress the generation of wrinkles at the time of transporting a bar stock with rolls by providing guide rolls for guiding the bar stock in the direction in which the middle part in the width direction is brought into contact with the peripheral surface of a tension roll. CONSTITUTION: The bar stock P which is ascendingly transported is passed through a 1st guide roll 12 and pushed in the direction in which the middle part in the width direction of the bar stock P approaches the peripheral surface of the tension roll 11 with the 1st guide roll 12. Next, the bar stock P is passed through the guide rolls 13, 14 and is pushed in the direction in which both side parts in the width direction are separated from the peripheral surface of the roll 11. Consequently, the bar stock is guided so as to be curved in the direction in which the middle part in the width direction of the bar stock P is brought into contact with the peripheral surface of the roll. When the bar stock P is further ascendingly transported and approaches the roll 11, the middle part in the width direction is brought into contact with the peripheral surface of the roll 11 and, after that, both the side parts are brought into contact with the peripheral surface of the roll 11. In this way, the whole in the width direction of the bar stock P is brought into contact with the peripheral surface of the roll 11, the bar stock is mades to change its direction in a horizontal direction and transported to other place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrinkle-preventing roll device for preventing a wrinkle from being generated due to the contact of the strip with the roll when the strip is conveyed.

[0002]

2. Description of the Related Art For example, when annealing a metal strip such as copper in an annealing furnace while carrying it, there is a phenomenon called "warpage" in which the strip strip is warped in a C-shape along its width. May occur. When the annealed strip is conveyed to another place while being supported by the roll, if the strip that is warped comes into contact with the roll, wrinkles may occur on the strip.

Since the part of the strip material which is wrinkled in this way cannot be used as a product and is discarded,
The generation of wrinkles reduces the economical efficiency of manufacturing the strip.

[0004]

As described above, the "warpage" in the strip is considered to be caused by the fact that it is difficult to anneal the entire strip uniformly in the annealing furnace. The wider the strip, the higher the degree of "warpage" and wrinkling.

Therefore, attempts have been made to anneal the entire strip material in a conventional annealing furnace, but this method is difficult to obtain effective results in terms of setting of annealing conditions, equipment conditions and the like. However, for this reason, "warping" is still observed in the annealed strip. Further, in the annealing furnace, the material is heated and weakened in strength, and it is difficult to suppress the occurrence of "warpage" by applying strong tension. Therefore, there is still a problem that wrinkles are generated in the strip material when the strip material that has been warped out from the annealing furnace is conveyed by the rolls.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a wrinkle-preventing roll device capable of suppressing the generation of wrinkles on a strip material when it is conveyed by a roll. To aim.

[0007]

According to a first aspect of the present invention, there is provided a wrinkle prevention roll device comprising a tension roll for applying tension to a strip material while conveying the strip material, and a tension roll having a central portion in the width direction of the strip material. A guide roll that guides the roll so as to contact the peripheral surface of the roll.

The wrinkle prevention roll device according to the invention of claim 2 is
A tension roll that applies tension to the strip while conveying the strip, and a crown-shaped first guide roll that guides the widthwise central portion of the strip in a direction of contacting the circumferential surface of the tension roll, It is characterized by comprising a second guide roll having a crown shape and a third guide roll having a crown shape for guiding both side portions in the width direction of the strip in a direction away from the peripheral surface of the tension roll.

The wrinkle prevention roll device according to the invention of claim 3 is
A tension roll for imparting tension to the strip material while conveying the strip material, a first guide roll having a ball for guiding the widthwise central portion of the strip material in a direction of contacting the circumferential surface of the tension roll, It is characterized in that it is provided with a second guide roll having a ball and a third guide roll having a ball for guiding both side portions in the width direction of the strip in a direction away from the peripheral surface of the tension roll.

[0010]

The inventor of the present invention, when the strip material which is warped along the width direction due to annealing or the like comes into contact with the roll,
We have conducted various studies on the phenomenon of wrinkling. As a result, the following was found.

That is, as shown in FIG. 6 (b), the strip P
In the case where “warp” occurs in such a direction that the center portion in the width direction thereof is separated from the peripheral surface of the roll R, both widthwise side portions of the strip P contact the peripheral surface of the roll R. In this case, a compressive force is applied from the both widthwise side portions of the strip P that are in contact with the peripheral surface of the roll R toward the central portion in the widthwise direction of the strip P that is distant from the roll R, and wrinkles occur at this central portion. To do.

On the other hand, as shown in FIG. 6 (a), when the strip P is warped in such a direction that the central portion in the width direction approaches the peripheral surface of the roll R, The central portion in the width direction of the strip P contacts the peripheral surface of the roll R. In this case,
The peripheral surface of the roll R, which extends linearly in the widthwise central portion of the strip P, presses the central portion of the strip P, and wrinkles hardly occur in the widthwise central portion of the strip P.

Therefore, it is when the "warp" of the strip P is in the direction of FIG. 6 (b) that the strip P having the "warp" tends to come into contact with the roll R and wrinkle easily. I understand.
Further, when the “warp” shown in FIG. 6A occurs in the strip P, there is very little concern about the occurrence of wrinkles.

Therefore, when the "warp" in the direction shown in FIG. 6 (b) occurs in the strip, the "warp" of the strip is forcibly corrected to the direction shown in FIG. 6 (a), It can be said that wrinkling of the strip can be suppressed by bringing the central portion of the strip in the width direction into contact with the roll.

According to the first aspect of the present invention, the guide roll guides the strip material so that the central portion in the width direction thereof warps in the direction of contacting the peripheral surface of the tension roll, and the strip material is tensioned in that state. Contact the circumference of the roll with tension. Then, first, the widthwise central portion of the strip comes into contact with the circumferential surface of the tension roll, and then both widthwise sides come into contact with the circumferential surface of the tension roll. As a result, it is possible to suppress the generation of wrinkles when the strip having the "warp" contacts the roll.

That is, by combining the guide roll and the tension roll, the respective operations can be effectively combined to suppress the generation of wrinkles in the strip. According to the invention of claim 2, as the guide rolls, a first guide roll having a crown shape for guiding the widthwise central portion of the strip material in a direction of coming into contact with the circumferential surface of the tension roll, and both widthwise sides of the strip material. The second guide roll having a crown shape and the third guide roll having a crown shape for guiding the portion away from the circumferential surface of the tension roll to reliably guide the strip material to contact the roll. Is possible.

According to the third aspect of the present invention, as the guide roll, there is provided a first guide roll having a ball for guiding the widthwise central portion of the strip material in a direction of contacting the circumferential surface of the tension roll, and the width of the strip material. Behavior of the guide roll along the width direction of the strip by using the second guide roll having the ball and the third guide roll having the ball for guiding both side portions in the direction away from the circumferential surface of the tension roll. It is possible to guide the strip material.

[0018]

Embodiments of the present invention will be described with reference to the drawings. An embodiment of the invention of claim 2 will be described with reference to FIGS. In this embodiment, as shown in FIG. 3, a strip material is annealed in an annealing furnace while being transported, and the apparatus of the present invention is applied to the strip material carried out from the annealing furnace. In FIG. 3, reference numeral 1 is a vertical annealing furnace.
Is composed of a heating unit 2, a soaking unit 3, and a cooling unit 4, which are provided in this order from the bottom. The strip P to be annealed is uniformly heated from the lower side of the annealing furnace 1 through the heating section 2 and the soaking section 3, and then cooled in the cooling section 4 and annealed. The strip P that has been annealed is unloaded from the cooling unit 4 to the upper side of the annealing furnace 1, and is further transported to the next step (not shown) or the next location such as the winding reel.

The roll device of this embodiment is provided in the conveying path for the strip P on the upper side of the annealing furnace 1. Next, the configuration of the roll device will be described with reference to FIGS. 1 and 2. In the figure, 11 is a tension roll, which has the same diameter throughout the axial direction. The tension roll 11 is arranged at right angles to the conveyance direction of the strip 1,
Both ends of the roll shaft are rotatably supported by bearings (not shown). The strip P carried out from the annealing furnace 1 rises vertically, is supported by the tension roll 11 and is given a tension, and changes its direction at a right angle in a tensioned state and is conveyed to another place along the horizontal direction. To be done.

Reference numeral 12 is a first guide roll, 13 is a second guide roll, and 14 is a third guide roll. These rolls 12 to 14 are provided below the tension roll 11. The first guide roll 12 is located below the second guide roll 13 and the third guide roll 14 and on one side surface side of the strip P. It is arranged at the center in the width direction and along the width direction of the strip P.

That is, when the tension roll 11 and the first guide roll 12 are viewed from above the tension roll 11, the first guide roll 12 is parallel to the tension roll 11 on a plane as shown in FIG. In addition, the tension roll 11 is located at the center in the length direction.

The second guide roll 13 and the third guide roll 14 are lifted along the vertical direction at a position above the first guide roll 11 and at the same height on the other side surface of the strip P. At both widthwise sides of the conveyed strip P,
In addition, the strips P are arranged so as to be inclined with respect to the width direction.
Second guide roll 13 and third guide roll 14
The direction of is set so as to be inclined at the same angle with respect to the widthwise center of the strip P toward both ends of the first guide roll 12.

That is, the orientations of the second guide roll 13 and the third guide roll 14 are set so as to incline the widthwise both sides of the strip P from the tension roll 11.

That is, the first to third guide rolls 1
2 to 14 guide the strip P such that the center portion in the width direction approaches the circumferential surface of the tension roll 11 and both side portions move away from the circumferential surface of the tension roll 11.

As shown in FIG. 3, each of the first to third guide rolls 12 to 14 has a length shorter than the width of the strip P, and has a crown shape in which the central portion in the lengthwise direction forms a swelling crown. It is what makes up. This is for the following reason. In the first guide roll 12,
This is because the widthwise central portion of the strip P is flexed toward the circumferential surface of the tension roll 11 without difficulty. This is because the second guide roll 13 and the third guide roll 14 flexibly bend both widthwise side portions of the strip P away from the circumferential surface of the tension roll 11.

First to third guide rolls 12 to 14
Are held and provided as shown in FIG. Each of the guide rolls 12 to 14 is rotatably supported by a bearing (not shown) provided on the arm 16 at both ends of a roll shaft 15 that supports the guide rolls. The arm 16 is attached to a piston rod 18 provided on a cylinder 17 utilizing hydraulic pressure or pneumatic pressure. Further, the base end of the cylinder 17 is an appropriate frame 20.
Is hingedly connected by a hinge tool 19. The cylinder 17 is configured to perform a swinging operation by applying a driving force by an auxiliary cylinder (not shown).

First to third guide rolls 12 to 14
Is moved toward and away from the strip P by the movement of the piston rod 18 driven by the cylinder 17. The first to third guide rolls 12 to 14 are driven by an auxiliary cylinder, and the cylinder 1 centered on the hinge tool 19 is used.
By the swinging motion of 7, it is possible to displace on the circle drawn around the hinge tool 19.

The first to third guide rolls 12 to 14 thus held and the respective cylinders 17 are horizontally arranged. The operation of the roll device thus configured will be described. When annealing the strip P of copper or the like in the annealing furnace 1, the first to third guide rolls 12 to 14 are respectively moved by driving the cylinder 17 to be located at a predetermined position, and the cylinder 17 is tilted to a predetermined position. Be placed at.

The strip P that has been annealed in the annealing furnace 1 is the annealing furnace 1
It comes out of the machine and is vertically conveyed. The strip P that is lifted and conveyed first passes through the first guide roll 12, and the strip P
The central portion in the width direction of is pressed by the first guide roll 12 in a direction approaching the peripheral surface of the tension roll 11.

Then, the strip P that is raised and conveyed passes through the second guide roll 13 and the third guide roll 14,
Both widthwise sides of the strip P are pushed in a direction away from the circumferential surface of the tension roll 11. As a result, the strip P warps in a direction in which the center portion in the width direction contacts the circumferential surface of the tension roll as shown in FIG. 1, regardless of the direction of the warp in the width direction caused by annealing. Be guided. Each of the guide rolls 11 to 13 comes into contact with the conveyed strip P and is rotated.

When the strip P is further conveyed up and approaches the tension roll 11, first, the central portion in the width direction comes into contact with the peripheral surface of the tension roll 11, and thereafter both side portions in the width direction contact the peripheral surface of the tension roll 11. Contact. As a result, the strip P comes into contact with the circumferential surface of the tension roll 11 in the entire width direction, changes its direction in the horizontal direction, and is transported to another location.

In the process in which the strip P annealed in this way moves, the strip P is tensioned at the central portion in the width direction by the first to third guide rolls 12 to 14.
By guiding the strip P so as to warp in the direction of contact with the circumferential surface of the strip and contacting the strip P with the circumferential surface of the tension roll 11 with tension in that state, the strip P having the "warp" comes into contact with the roll. Occasionally, wrinkles can be suppressed. That is, by combining the guide rolls 12 to 14 and the tension roll 11, the respective operations can be effectively combined to suppress the generation of wrinkles in the strip.

In this embodiment, as the guide rolls, the first guide roll 12 having a crown shape for guiding the central portion in the width direction of the strip P in the direction of coming into contact with the peripheral surface of the tension roll 11, and the strip By using the crown-shaped second guide roll 13 and the crown-shaped third guide roll 14 for guiding both side portions in the width direction of P in a direction away from the circumferential surface of the tension roll 11, these first or second The third guide rolls 12 to 14 can reliably guide the strip P to bring it into contact with the tension roll 11.

An embodiment of the invention of claim 3 will be described with reference to FIGS. 4 and 5. The embodiment shown in FIGS. 4 and 5 is intended for the strip P annealed in the annealing furnace as in the embodiment of the invention of claim 2. 4 and 5, the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals.

In the figure, 31 is a first ball head which is a first guide roll, 32 is a second ball head which is a second guide roll, and 33 is a third ball head which is a third guide roll. is there.

These first to third ball heads 31
To 33 are configured as shown in FIG. Figure 5
34 is a support base, 35 is, for example, three shafts supported side by side in the width direction of the strip P on the support base 34, 36 is a ball support attached to the tip of each shaft 35, 37 Is a ball for contacting the strip P rotatably held by each ball support 36. The ball 37 is provided so as to be rotatable in any direction.

Each shaft 35 is movably supported by the support base 34 in a direction of approaching and separating from the strip P, and a force is applied by the spring 38 in a direction of approaching the strip P. It is screwed and is prevented from coming out of the support base 34. For this reason, each ball 37 is given a force for contacting the strip P, and is movably displaced in a direction of approaching and separating from the strip P according to the warp of the strip P while being in contact with the strip P. To do.

These first to third ball heads 31
33 are provided below the tension roll 11 similarly to the first to third guide rolls 12 to 14 in the above-described embodiment. That is, the first ball head 31
Is arranged in the width direction central portion of the strip P that is vertically conveyed in the vertical direction at a position on one side surface of the strip P and along the width direction of the strip P.

The second ball head 32 and the third ball head 33 are vertically conveyed at a position above the first ball head 31 and at the same height on the other side surface of the strip P, in the vertical direction. The strips P are arranged on both sides in the width direction of the strip P and are inclined with respect to the width direction of the strip P. The orientations of the second ball head 32 and the third ball head 33 are
It is set so as to be inclined at the same angle so as to narrow toward both ends of the first ball head 31 with respect to the center of the strip P in the width direction.

That is, in the first to third ball heads 31 to 33, the widthwise central portion of the strip P approaches the peripheral surface of the tension roll 11, and both side portions thereof separate from the peripheral surface of the tension roll 11. To guide you.

Further, the first to third ball heads 31
The support bases 34 to 33 are attached to a piston rod 41 provided in a cylinder 40 that uses hydraulic pressure or pneumatic pressure. The base end of the cylinder 40 is rotatably connected to an appropriate frame 43 by a hinge tool 42. The cylinder 40 is adapted to perform a swinging operation by applying a driving force by an unillustrated auxiliary cylinder.

Therefore, the first to third ball heads 31 to 33 are moved toward and away from the strip P by the movement of the piston rod 41 by the driving of the cylinder 40. The first to third ball heads 31 to 33 can be displaced on a circle drawn around the hinge tool 42 by the swinging motion of the cylinder 40 centered on the hinge tool 42 driven by the auxiliary cylinder. It is possible.

The first to third ball heads 31 to 33 thus held and the respective cylinders 40 are horizontally arranged. In the roll device configured as described above, the balls 27 of the first to third ball heads 31 to 33 come into contact with the strip P that has been annealed and lifted and conveyed, and rotates as the strip P moves. The material P is guided and the strip P can be conveyed. Then, the strip P that has been annealed
Is guided by the first to third ball heads 31 to 33 so that the central portion in the width direction is warped in the direction of contacting the peripheral surface of the tension roll 11 in the process of rising.
In this state, the strip P is brought into contact with the circumferential surface of the tension roll 11 with tension, so that the strip P having a warp exists.
It is possible to suppress the generation of wrinkles when the sheet comes into contact with the roll.

Further, in the present invention, as the guide id roll, there is provided the first ball head 31 having the ball 37 for guiding the central portion in the width direction of the strip material in the direction of coming into contact with the peripheral surface of the tension roll, and the width of the strip material. By using the second ball head 32 and the third ball head 33 having the balls 27 that guide both side portions in the direction away from the circumferential surface of the tension roll 11, each ball 37 is arranged along the width direction of the strip P. The strip P can be guided to follow the behavior. That is, the first to third ball heads 31 to 3
Since the ball 37 of No. 3 rotates without directionality, even if the strip P is displaced in the width direction during transport, it rotates following the displacement to transport the strip P smoothly. be able to.

The present invention is not limited to the above-mentioned embodiments, but can be modified in various ways. For example, the present invention is not limited to the case of guiding a strip material annealed in an annealing furnace, but can be widely applied to the case of transporting a strip material having a "warp".

[0046]

As described above, according to the first aspect of the invention, the guide roll guides the strip member so that the central portion of the strip member in the width direction warps in the direction in which the circumferential surface of the tension roll contacts the strip member. Then, by bringing the strip material into contact with the circumferential surface of the tension roll with tension in that state, it is possible to suppress the generation of wrinkles when the strip material having the warp contacts the roll. That is, by combining the guide roll and the tension roll, the respective operations can be effectively combined to suppress the generation of wrinkles in the strip.

According to the second aspect of the present invention, as the guide roll, the first guide roll having a crown shape for guiding the widthwise central portion of the strip in a direction of contacting the circumferential surface of the tension roll, and the strip of the strip are provided. Using the crown-shaped second guide roll and the crown-shaped third guide roll that guide the widthwise both sides away from the peripheral surface of the tension roll, the warpage of the strip can be reliably guided. The rollers can be contacted.

According to the third aspect of the present invention, as the guide roll, there is provided a first guide roll having a ball for guiding the central portion in the width direction of the strip material in a direction of contacting the circumferential surface of the tension roll, and the width of the strip material. Follows the behavior of the guide roll along the width direction of the strip by using the second guide roll having the ball and the third guide roll having the ball that guides both sides in the direction away from the circumferential surface of the tension roll. You can guide the strip.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a roll device according to an embodiment of the invention of claim 2.

FIG. 2 is a view showing a guide roll used in the roll device of the embodiment.

FIG. 3 is a view showing a usage state of the roll device according to the embodiment.

FIG. 4 is a schematic configuration diagram showing a roll device according to an embodiment of the invention of claim 3;

FIG. 5 is a view showing a guide roll used in the roll device of the embodiment.

FIG. 6 is a view showing a warp direction of a strip material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Annealing furnace, 11 ... Tension roll, 12 ... Guide roll, 13 ... Guide roll, 14 ... Guide roll, 31 ... Ball head (guide roll), 32 ... Ball head (guide roll), 33 ... Ball head (guide roll) ), P ... Strip material.

Claims (3)

[Claims] 1. A tension roll that applies tension to a strip material while conveying the strip material, and a guide roll that guides the strip material in a direction in which a widthwise central portion of the strip material contacts the peripheral surface of the tension roll. A wrinkle-preventing roll device. 2. A tension roll for imparting tension to a strip material while conveying the strip material, and a crown-shaped first guide for guiding a central portion in the width direction of the strip material in a direction of coming into contact with a peripheral surface of the tension roll. Guide rolls, and a second guide roll having a crown shape and a third guide roll having a crown shape for guiding both side portions in the width direction of the strip in a direction away from the peripheral surface of the tension roll. Wrinkle prevention roll device. 3. A first roll having a tension roll for applying tension to the strip material while conveying the strip material, and a ball for guiding the widthwise central portion of the strip material in a direction of coming into contact with the peripheral surface of the tension roll. A guide roll, a second guide roll having a ball that guides both widthwise side portions of the strip in a direction away from the circumferential surface of the tension roll, and a third guide roll having a ball. Anti-wrinkle roll device.