JPH01154726A - Production equipment of carrier roll for hot-dipped steel sheet - Google Patents

Abstract

PURPOSE:To perform not manually but mechanically spirally winding work of band-like fabric under tension and consequently make it possible to ensure the expected durability on a roll by a method wherein a fabric housing part, a tension roll and a press roll are translated parallel to the direction of the axis of a metallic roll in synchronization with the rotation of the roll. CONSTITUTION:After a roll 6, onto which heat resistant thermosetting resin is applied, is releasably supported on a bearing device 8, the end of a band-like fabric 14 is pulled out of a fabric feeding part 15, passed through a tension roll 17 and, after that, pasted onto the peripheral surface of the roll 6 at the predetermined angle with respect to the edge face of the roll 6 and finally pressed with a press roll 22. When a roll rotating device 13 is rotated under the state just mentioned above, the fabric 14 is pulled out of the fabric feeding part 15 and wound on the peripheral surface of the roll 6 while being given the predetermined tension by means of the tension roll 17. Further, since of a fabric feeding part 15, the tension roll 17 and the press roll 22 translate parallel to the direction of the axis of the roll 6 in synchronization with the rotation of the roll 6, the fabric 14 is successively spirally wound onto the peripheral surface of the roll 6 are pressed against the adhesive layer applied to the roll.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for manufacturing rolls for conveying hot-dip plated steel sheets.

(Prior art) Conventionally, when continuously molten metal plating a steel strip (long plated steel plate), the long plated steel plate is passed through a plating bath in which plated metals such as zinc and aluminum are melted while running. Various types of plated steel sheets are manufactured by attaching molten plated metal to a long plated steel sheet and wiping the long plated steel sheet to a predetermined coating weight.

In such manufacturing equipment, various rolls such as top rolls (tower rolls) are used as accessory equipment to transport the steel strip after hot-dip coating, but these rolls are heated at high temperatures and the surface of the plated steel sheet is in a semi-molten state. Because it comes into contact with
Rolls with electroless nickel plating on the entire surface as in Japanese Patent Publication No. 34905, rolls with a built-up welding layer of Co-Cr-W alloy as in Japanese Patent Publication No. 52-229345, and even Ni-Cr. Rolls coated with various coatings, such as sprayed rolls made of -Mn alloys or WC alloys, are used. These various rolls exhibit excellent characteristics such as wear resistance and various properties required under high temperature usage conditions.

(Problems to be Solved by the Invention) However, in the conventional 1ull feeding roll described above, since the material has good wettability between the roll surface and the hot-dip plated metal,
The roll picks up the semi-molten plated metal attached to the plated steel plate, solidifies it, and induces pressure on the surface of the subsequent plated steel plate. The plated steel sheet that has been subjected to pressure has a problem in that its corrosion resistance is significantly reduced, its appearance deteriorates, and its commercial value is impaired.

Therefore, in order to solve these problems, the inventors of the present invention developed a multi-spun blend of aramid resin fiber and carbon fiber, which has pick-up resistance against molten metal. A roll for conveying a hot-dip plated steel plate in which the periphery of the metal roll is surrounded by a woven fabric has been provided (see Utility Model Application No. 9397 (1981)). However, when winding a strip of woven fabric in a spiral to surround the woven fabric on a metal surface, if the operator manually wraps the woven fabric around the metal surface, the work efficiency will be poor and the ability of the operator will be reduced. The results of the work vary depending on the level of skill, and this tends to occur particularly when applying tension and winding a strip of woven fabric, making it difficult to obtain the desired durability against peeling of the finished transport roll. There are concerns. In addition, since the band-shaped woven fabric is wound onto a metal roll through a thermosetting resin, it is necessary to heat and cure it after winding to harden the intervening resin. When cured, distortion occurs in the roll axis, and it is difficult to heat while rotating, so it is difficult to harden to a uniform thickness.

However, drying at room temperature is not preferred because it requires a long drying time and has problems such as poor work efficiency.

(Object of the Invention) In view of these problems, the present invention aims to provide a manufacturing apparatus for a roll for transporting hot-dip plated steel sheets that can ensure desired durability when manufacturing a transport roll having pick-up resistance. The first purpose. Furthermore, a second object of the present invention is to provide a manufacturing apparatus that can quickly cure and harden the intervening resin without curing in a heating furnace.

(Means for Achieving the Object) Therefore, the first invention of the present application provides a roll support device that rotatably supports a metal roll, a woven fabric supply unit that supplies a band-shaped woven fabric, and a metal A roll rotation device that rotates a metal roll, a tension roll that applies a predetermined tension to a band-shaped woven fabric wound around a metal roll, and a pressure roll that presses the band-shaped woven fabric against the circumferential surface of the metal roll, In synchronization with the rotation of the metal roll, the woven fabric supply unit, tension roll, and pressure roll are moved in parallel in the roll axis direction, and the contact position of the band-shaped woven fabric with the circumferential surface of the metal roll during winding is sequentially adjusted. The gist is that the control structure is configured to position and wind the fabric in a spiral manner, and to sequentially press the wound band-shaped woven fabric.

In addition to the first invention, the second invention of the present application further includes a heat-resistant thermosetting resin on the circumferential surface of the metal roll after winding.
The gist of the present invention is to provide a far-infrared ray generator that projects far-infrared rays with particularly high thermal efficiency.

(Function) In the first invention, when the metal roll coated with the heat-resistant thermosetting resin is supported by the roll support device,
After pulling out the end of the compressed band-shaped woven fabric that has eliminated free elongation from the woven fabric supply section and passing it through a tension roll, it is attached to the circumferential surface of the roll at a predetermined angle to the end surface of the metal roll. When the pressure roll presses the fabric and the roll rotating device is rotated in this state, the belt-shaped woven fabric is pulled out from the woven fabric supply section by the rotation, and the metal roll circumferential surface is not applied with a predetermined tension by the tension roll. Since the woven fabric supply section, the tension roll, and the pressure roll move in parallel in the roll axis direction in synchronization with the rotation of the metal roll, the woven fabric is sequentially wound in a spiral shape around the roll circumferential surface. At the same time, the spirally wound strip-shaped woven fabric is pressed against the sequentially applied adhesive layer.

Further, in the second invention, when the band-shaped woven fabric is wound around the metal roll as described above, the far-infrared ray generator is activated, and only the heat-resistant thermosetting resin portion on the peripheral surface of the metal roll is activated. is thermally efficient (heat-cured,
It will harden and the band-shaped woven fabric will be fixed.

Note that the belt-shaped woven fabric may be supplied by winding up one end of the woven fabric whose free elongation has been reduced by compressing it, storing it in a woven fabric storage support, and unwinding it as the metal roll rotates. Alternatively, the free elongation removing machine that rolls the strip-shaped woven fabric may be used as a woven fabric supply section to directly supply the woven fabric with reduced free elongation.

Further, in order to improve the compatibility between the belt-like woven fabric and the heat-resistant thermosetting resin, it is preferable to provide a heating device to heat the belt-shaped woven fabric just before being wound around a metal roll.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

(Example) FIGS. 1 and 2 show an apparatus for manufacturing a roll for conveying a hot-dip plated steel plate according to an example of the first invention of the present application. In the figure, a first table 2 is fixed on a floor 1, while
A second table 3 is movably installed parallel to the table 2. A fourth spindle and a take-out stand 5 are arranged on the first table 2, and the head spindle 4 and take-out stand 5 are provided with a chuck 7 for gripping and fixing the shaft 6a of the metal roll 6, In this way, a roll support device 8 that supports the metal roll 6 in a detachable and rotatable manner is constructed.

Further, a drive pulley 9 is provided on the headstock 4, while a motor 10 and a transmission 1) are provided on the first table 2.
A belt 12 is stretched between a pulley (not shown) in the transmission 1) and the drive pulley 9, and the rotation of the motor 10 is decelerated by the transmission 1) and 1
2 to the drive pulley 9 of the headstock 4 to rotate the main shaft of the headstock 4, thus forming a roll rotation device 13 that rotates the metal roll 6.

On the other hand, on the second table 3, there is a woven fabric supply section,
A woven fabric storage section 15 is provided to accommodate and support a band-shaped woven fabric 14 wound into a roll.

In place of this woven fabric storage section 15, as shown in FIG. 5, a free elongation removing machine 15' consisting of a plurality of pairs of rolls is provided to directly supply the woven fabric whose free elongation has been reduced by rolling compression. You can do it like this.

In front of the woven fabric storage section 15 (on the left side in FIG. 1), there is disposed a wrinkle-smoothing roll machine 16 formed by passing a plurality of rolls 16a between a pair of menisci, and the wrinkle-smoothing roll machine groove. A tension roll 17 is disposed in front of the tension roll 16. This tension roll 17 consists of a large-diameter main roll 18 and a small-diameter sub-roll 19. A rubber member is attached to the entire circumference of the main roll 18, and tension to be applied to the tension roll 17 is applied. An adjustment screw 20 is provided for adjustment. This second table 3 includes a metal roll 6
A mechanism similar to the movement mechanism of the press roll 22 described below or a mechanism equivalent to the bite feeding mechanism of a large-sized lathe may be adopted.

In addition, in the drawing, a heating device H is provided on the second table 3 in front of the tension roll 17, and the belt-shaped woven fabric 1 is supplied.
It is designed to heat the front and back sides of 4.

Further, a positioning member 21 is installed on the first table 2 to set the contact angle of the strip-shaped woven fabric 14 with respect to the circumferential surface of the metal roll 6 during winding. A pressure roll 22 is provided behind the roller 6 . This press roll 22 is provided so as to be swingable relative to the circumferential surface of the metal roll 6, and is pressed and released from the circumferential surface of the metal roll 6 by a cylinder 23.

Further, the base 22a of the pressure roll 22 is connected to the first table 2.
The feed screw 24 is connected to a motor 26 via a transmission 25, and the rotation of the motor 26 causes the feed screw 24 to rotate. The pressure roll 22 can be moved in parallel along the circumferential surface of the metal roll 6 in the roll axis direction.

A far-infrared device 40 is disposed above the metal roll 6. The burner surface of the device 40 has a catalyst mat 4 made of porous alumina fibers supporting a catalytically active metal.
1, and the ignition method is that the electric spark from the spark plug 43 directly ignites the mixed gas (m = 0.8) on the surface of the catalyst man) 41 (aurora combustion), and when the catalytic reaction starts, the mixed gas (m=0.4) is thermal mat 4
During the second pass, it is preheated and combustion occurs without generating flame in the catalyst layer.

As shown in FIG. 6, the far-infrared device 40 is disposed above the metal roll 6, in front and behind it, so as to surround the roll circumferential surface and facing diagonally downward.
, 40 is preferably surrounded by a hood 41 to block heated rising air currents from escaping.

In addition, conventional catalytic combustion burners used electric heater preheating ignition and all secondary air combustion, but the device shown in the figure uses premix catalytic combustion with premix direct ignition.
Highly safe (flameless combustion, surface temperature approximately 400°C),
The circumferential surface of the metal roll 6 can be heated and cured using wavelengths rich in far infrared rays (2.4 to 14 pm) with a uniform temperature distribution. Since polymeric substances (synthetic resins, paints, etc.) efficiently absorb far infrared rays, it is possible to shorten processing time and save energy.

FIGS. 3 and 4 show rolls for conveying hot-dip plated steel sheets manufactured by the above-mentioned apparatus. The metal rolls 6 are made of cast iron, cast steel,
It is manufactured in a hollow shape using steel, etc., and a water cooling structure consisting of a water cooling jacket or cooling water circulation channel is formed on the inner peripheral surface.
Water is supplied from one shaft and drained from the other shaft. The water level on the water supply side and drain side should be higher than that of the water cooling jacket so that water fills the water cooling jacket.

Furthermore, the circumferential surface of the metal roll 6 is coated with a heat-resistant thermosetting resin N.
A band-shaped nonwoven fabric 28 made of a blend of aramid resin fibers and carbon fibers is spirally wound in a half-width overlap via 27, and
On the band-shaped nonwoven fabric 28, a blended multi-knit fabric 3 of aramid resin fibers and carbon fibers is disposed through a heat-resistant thermosetting resin 29.
0 is spirally wound, and the band-shaped nonwoven fabric 28 and the band-shaped woven fabric 30 are fixed by countersunk screws 31 screwed onto both ends of the circumferential surface of the metal roll 6 at appropriate intervals in the circumferential direction. . Note that both ends of the body of the metal roll 6 are formed to have a slightly smaller diameter than other parts so that the countersunk screw 31 will not come into contact with the plated steel plate and damage it.

Next, the operation of this device will be explained.

In this apparatus, when manufacturing a hot-dip plated steel sheet, the peripheral surface of the metal roll 6 is first blasted to prevent uneven winding or misalignment of the strip-shaped woven fabric 14 in the subsequent process, and then Heat-resistant thermosetting resin on the circumferential surface of roll 6,
For example, an epoxy heat-resistant adhesive 27 is applied, and the shaft 6a of the metal roll 6 is attached to the chuck 7 of the headstock 4 and centering table 5.
The metal roll 6 is supported between the headstock 4 and the centering table 5 by gripping the metal roll 6. On the other hand, after winding up a blended band-shaped nonwoven fabric 28 of aramid resin fiber and carbon fiber for the lower roll into a roll and storing and supporting it in the woven fabric storage section 15, the edge of the band-shaped nonwoven fabric 28 is pulled out and wrinkles are smoothed out. After passing through the roll mechanism 16 and the tension roll 17 and further passing under the positioning member 21, it is wound around the circumferential surface of the metal roll 6 at a predetermined angle with respect to the end surface of the roll 6. Next, the cylinder 23 of the press roll 22 is operated to swing the press roll 22 toward the circumferential surface of the metal roll 6, thereby pressing the strip-shaped nonwoven fabric 28 against the circumferential surface of the roll 6. When the setting of the metal roll 6 and the belt-shaped nonwoven fabric 28 for lower winding is completed in this way, the motor 10 and the motor 26 are activated. Then, the rotation of the motor 10 is decelerated by the transmission 1) and transmitted to the drive boot +J9 of the headstock 4 via the belt 12, and the main shaft of the headstock 4 rotates, causing the metal roll 6 to rotate. Since the second table 3 is synchronously moved in parallel in the roll axis direction, the strip-shaped nonwoven fabric 2 is further removed from the fabric storage section 15.
8 is pulled out, the strip-shaped nonwoven fabric 28 is smoothed out by the wrinkle smoothing roll mechanism 16, and the wrinkles are smoothed out by the tension roll 17.
, the front and back sides are heated by the heating device H, and the positioning member 21 determines the contact position with respect to the circumferential surface of the metal roll 6, and the sheet is spirally wound around the circumferential surface of the metal roll 6 in a half-width overlap. Note that the overlapping width can be adjusted by adjusting the translation speed in synchronization with the six rotations of the metal roll of the second table 3.

On the other hand, the rotation of the motor 26 is decelerated by the transmission 25 and transmitted to the feed screw 24, and the feed screw 24 rotates. Then, as the feed screw 24 rotates, the pressure roll 22 moves horizontally in synchronization with the winding of the band-shaped nonwoven fabric 28 around the circumferential surface of the metal roll 6, and the band-shaped nonwoven fabric 28 always remains on the circumferential surface of the metal roll 6. Pressed by, and thus Kim M! ! ! The strip-shaped nonwoven fabric 28 is evenly and uniformly wound around the circumferential surface of the roll 6. In addition,
When winding the strip-shaped nonwoven fabric 28, the adjustment screw 20 of the tension roll 17 is adjusted so that too much tension is not applied.

When the belt-shaped nonwoven fabric 28 for lower winding is completely wound around the circumferential surface of the metal roll 6, the cylinder 23 of the press roll 22 is actuated to swing the press roll 22 apart, and the motor 26
is rotated in the opposite direction to return the pressure roll 22 to its initial position. On the other hand, the metal roll 6 is dried at a constant temperature according to the resin conditions of the heat-resistant thermosetting resin 27 while being rotated to such an extent that the strip-shaped nonwoven fabric 28 does not shift, and after the resin 27 is dried, a predetermined curing process is performed. After some time, heating and drying is performed using a far-infrared device 40 located above the lower-wound metal roll 6. That is, when the far infrared device 40 is operated while rotating the metal roll 6 whose lower winding has been completed, the catalyst mat 41
Far-infrared rays are emitted from the burner surface, which uniformly heats only the circumferential surface of the metal roll 60 and does not have any thermal effect on the roll shaft. is cured and hardened.

When the lower winding of the metal roll 6 is completed in this way, a heat-resistant thermosetting resin 29 is applied onto the band-shaped nonwoven fabric 28 of the roll 6, and it is supported between the headstock 4 and the centering table 5 in the same manner as during the lower winding. . On the other hand, it is preferable that the blended multi-filament belt-like woven fabric 30 of aramid resin fiber and carbon fiber for the first winding be rolled under a predetermined tension so that the free elongation is reduced by 50% or more. In the example, the width is 150mm and the thickness is 6mm.
A thin strip-shaped woven fabric 30 is rolled by passing it through rolling rolls with an interval of 4 rolls. For reference, the relationship between the reduction amount during rolling and the free elongation is shown in Table 1 below.

The woven fabric used for the measurement was two layers of aramid resin fiber and two layers of carbon fiber.
A blended multilayer knitted fabric with dimensions of thickness 61-2 width 15
0n+, length 300 m. In addition, the tension during rolling is 5 kg/t*, and the tension during free elongation measurement is also 5 kg.
/It is a fin.

Table 1: When the compression and stretching are completed, the strip-shaped woven fabric 30 obtained by rolling is wound up into a roll, and this is placed in the woven fabric storage section 15 in the same manner as in the case of lower winding.
After being stored and supported in the metal roll 6, the end is pulled out, passed through the wrinkle smoothing roll mechanism 16, tension roll 17, and positioning member 21, and wound around the circumferential surface of the metal roll 6 at a predetermined angle. The cloth 30 is pressed against the circumferential surface of the metal roll 6.

Then, when the setting of the metal roll 6 and the first winding belt-shaped woven fabric 30 is completed, the motor IO and the motor 26 are operated again. At this time, the adjustment screw 20 of the tension roll 17
is adjusted so that a predetermined tension, for example, 5 kg/as, is applied.

Then, due to the rotation of the motor 10, the second
Since the table 3 moves parallel to the roll axis direction, the strip-shaped woven fabric 30 is further pulled out, and the wrinkle smoothing roll mechanism 16
The wrinkles are smoothed out by the tension roll 17, and a predetermined tension is applied to the fabric by the tension roll 17. While being positioned by the positioning member 21, the fabric is spirally wound in a single layer on the lower band-shaped woven fabric 28 of the metal roll 6 without overlapping. . When the winding of the upper band-shaped woven fabric 30 is completed, it is dried at a constant temperature and cured in the same manner as the lower winding, and then heated and dried using the far-infrared device 40.Finally, the countersunk screw 31 is attached to the metal roll 6. The wound woven fabrics 28 and 30 are fixed by appropriately screwing them into the screw holes at both ends of the body.

In the device of this embodiment as described above, since the work of winding the strip-shaped woven fabric using the rolling method while applying tension is automatically performed, the result of the work is not affected as much as when the worker does it manually. There is no variation, and the desired durability of the roll for conveying hot-dip plated steel sheets can be ensured.

In the above embodiments, a blended nonwoven fabric of aramid resin fibers and carbon fibers was used as the woven fabric for the lower volume, but it may also be a carbon fiber yarn woven fabric.

Further, in the above embodiment, a gas far-infrared ray generator was provided after winding to perform drying using far-infrared rays, but it is also possible to use other far-infrared rays.

(Effects of the Invention) As is clear from the above description, the present invention provides a roll support that removably and rotatably supports a metal roll whose peripheral surface is coated with a heat-resistant thermosetting resin. a device;
a roll rotation device that rotates the supported metal roll and winds the band-shaped woven fabric around the metal roll;
A woven fabric supply unit that supplies a band-shaped woven fabric to be wound around the peripheral surface of the metal roll, and a woven fabric supply unit that is provided between the roll support device and the woven fabric supply unit, and is wound around the metal roll. A tension roll that applies a predetermined tension to the belt-like woven fabric, and a pressure roll that presses the wound belt-like woven fabric against the circumferential surface of the metal roll, and the woven fabric is rotated in synchronization with the rotation of the metal roll. The storage section, the tension roll, and the pressure roll are moved in parallel in the roll axis direction to sequentially position the contact position of the strip-shaped woven fabric against the circumferential surface of the metal roll during winding, and wind the strip in a spiral shape. Since the control structure is configured to sequentially press the belt-shaped woven fabric wound around the belt, when manufacturing rolls for conveying hot-dip plated steel sheets, the worker can manually wind the belt-shaped woven fabric in a spiral shape while applying tension. This can be done mechanically without any work, and has the effect of ensuring the desired durability of the pick-up resistant hot-dip plated steel plate conveying roll.

In addition, according to the second invention, the heat-resistant thermosetting resin is dried using far infrared rays, which has been proven to have particularly high thermal efficiency. It has the advantage of eliminating various drying problems.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of an apparatus for manufacturing rolls for conveying hot-dip plated steel sheets according to an embodiment of the first invention of the present application, and FIG. 2 is a rear view of the apparatus, showing the configuration of the second invention. 3 and 4 are a partial front view and a partial partial view of the conveying roll manufactured by the apparatus of the present invention, and FIG. 5 is a perspective view of a free elongation removing machine that reduces free elongation of a belt-like woven fabric. , FIG. 6 is a side view showing the arrangement of the far-infrared device. 6... Metal roll 8... Roll support device 13.
...Roll rotation device 14...Band-shaped woven fabric 15...Woven fabric storage section 17...Tension roll 21...Positioning member 22...Press roll 27.29...
Heat-resistant thermosetting resin 40... far infrared device

Claims (2)

[Claims] (1) a roll support device that removably and rotatably supports a metal roll whose peripheral surface is coated with a heat-resistant thermosetting resin; and a roll support device that rotates the supported metal roll;
a roll rotation device for winding the strip-shaped woven fabric around the circumferential surface of the metal roll; a woven fabric supply section that supplies the strip-shaped woven fabric to be wound around the circumferential surface of the metal roll; the roll support device; A tension roll is provided between the fabric supply unit and applies a predetermined tension to the woven fabric band wound around the metal roll, and a tension roll is provided to press the woven fabric band to be wound onto the circumferential surface of the metal roll. The woven fabric supply section, the tension roll, and the press roll are moved in parallel in the roll axis direction in synchronization with the rotation of the metal roll, and the belt-like woven fabric is moved against the circumferential surface of the metal roll during winding. A manufacturing apparatus for a roll for conveying a hot-dip plated steel plate, characterized in that the control structure is configured to sequentially position the contact positions of the cloth and wind it in a spiral shape, and to sequentially press the strip-shaped woven cloth wound in the spiral shape. . (2) a roll support device that removably and rotatably supports a metal roll whose peripheral surface is coated with a heat-resistant thermosetting resin; and a roll support device that rotates the supported metal roll;
a roll rotation device for winding the strip-shaped woven fabric around the circumferential surface of the metal roll; a woven fabric storage section for supplying the strip-shaped woven fabric to be wound around the circumferential surface of the metal roll; the roll support device and the woven fabric. A tension roll is provided between the fabric storage section and applies a predetermined tension to the woven fabric band wound around the metal roll, and a tension roll is provided to press the woven fabric band to be wound onto the circumferential surface of the metal roll. The woven fabric supply section, the tension roll, and the press roll are moved in parallel in the roll axis direction in synchronization with the rotation of the metal roll, and the belt-like woven fabric is moved against the circumferential surface of the metal roll during winding. The contact points of the cloth are sequentially positioned and wound into a spiral shape, and the strip-shaped woven fabric wound in a spiral manner is controlled to be pressed one after another. A manufacturing device for a roll for conveying hot-dip plated steel sheets, characterized by being equipped with a far-infrared ray generator that projects far-infrared rays onto a thermosetting resin.