JP2001239305A - Cold rolling device, rolling machine, deformed rolled material and shape steel, method of cold rolling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide cold rolling working devices 1, 2 when cold rolling materials which vary a lot in section, which have a large plate width and which are not suitable for cold rolling, a rolling machine 18 which can cold roll many kinds of deformed rolled materials 4, deformed rolled materials 4 which are cold rolled in that way and shape steel 12 made by forming or pressing deformed rolled materials 4. SOLUTION: The cold rolling devices 1, 2 are equipped with grooves 3a-3n on the outer periphery of only a lower roller 3 to roll a material by passing a slit coil 6 through spaces 11a-11n prepared between an upper roller 5 and the lower roller 3. The lower roller 3 comprising a lower ring 14g and a lower roller shaft 17, and a driven frame 22 are easily movable in the rolling machine 18. This invention is characterized by providing the cold rolling devices 1, 2 the rolling machine 18, deformed rolled materials 4 manufactured by the cold rolling devices 1, 2 and shape steel 12 obtained by forming or pressing deformed rolled materials 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaped steel used for a frame member of a cathode ray tube of a television, an automobile part, an industrial machine, a building hardware, etc., and a deformed rolled material useful as a material of such a shaped steel. Related to rolling machines and rolling mills that produce various deformed rolled materials, especially materials with special electromagnetic properties required for components of digital home appliances, materials with high strength and light weight required for automotive parts, etc. Another object of the present invention is to provide an apparatus for easily cold-rolling a material having difficulty in workability or weldability with high accuracy, or to provide a deformed rolled material or a section steel cold-rolled by such an apparatus.

[0002]

2. Description of the Related Art Conventionally, there is no apparatus for producing a deformed rolled material by cold rolling a slit coil, and a drawing method is employed, so that cold working involving a large change in cross section cannot be performed. Further, the workable plate width is limited to about 10 mm to 30 mm, and a material having a wide plate width cannot be processed.
In addition, members required for digital home appliances and automobile parts, which have special electromagnetic characteristics and strength characteristics, are often difficult to cold-roll, weld, and machine. It has been difficult to process it into the required part shape.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to eliminate the above-mentioned disadvantages of the prior art, and has as its object to cold-roll while pressing with a lower roller and an upper roller. In the apparatus, a groove is formed only on the outer periphery of the lower roller, and a slit coil having a rectangular cross section is passed through the space, thereby producing a deformed rolled material having the same cross section as the shape of the space. By providing an apparatus, it is possible to perform cold working involving a large change in cross section, cold rolling of a material having a wide plate width, or a material having poor cold rolling properties.

Another object is to form the lower roller with a lower roller shaft and a lower ring or to form the upper and lower rollers with an upper and lower roller shaft and an upper and lower ring so that the lower roller shaft or the upper and lower roller shafts are driven. The driven frame supporting the shaft is configured to be easily movable, and the ring can be easily replaced in a short time. An object of the present invention is to enable cold rolling of a deformed rolled material.

It is another object of the present invention to provide a deformed rolled material manufactured by the above-mentioned cold rolling apparatus and a shaped steel made of such a deformed rolled material, for example, by forming a deformed material whose end portion is finely changed. It is an object of the present invention to provide a material which facilitates machining before a part is completed by using a rolled material or a shaped steel obtained by processing such a deformed rolled material into a required cross-sectional shape. Still another object is to provide a deformed rolled material whose end is thickened or a shaped steel obtained by processing such a deformed rolled material into a required cross-sectional shape. To provide.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an apparatus for cold rolling while applying pressure between a lower roller having a groove on its outer periphery and an upper roller having a constant outer diameter. The slit coil is made to pass through the space provided between the upper surface and the upper surface, thereby producing a deformed rolled material having the same cross section as the shape of the space. Further, the lower roller is composed of a lower roller shaft and a lower ring, or the upper and lower rollers are also composed of upper and lower roller shafts and upper and lower rings, and a driven frame holding the lower roller shaft or the upper and lower roller shafts is composed of rails and guides. It is configured to be supported and easily movable. Further, it is characterized in that it is a deformed rolled material manufactured by such a cold rolling device, or a shaped steel formed by forming or pressing such a deformed rolled material.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. The cold rolling apparatus 1 according to the first embodiment includes two rolling mills 18 including a lower roller 3 and an upper roller 5, an uncoiler 7 and a recoiler 8. In this embodiment, two rolling mills 18 are arranged in order to perform high-speed and high-precision cold working. Rough rolling with the first rolling mill 2
This is because precision rolling is performed by the second rolling mill. A main embodiment of the upper and lower rollers 5, 3 is shown in FIG. Grooves 3a, 3f, 3g, 3i, 3k, 3n are provided in the center of the lower roller 3, and the upper and lower rollers 5, 3 are provided with grooves 3a, 3f, 3g, 3g.
Except for i, 3k and 3n, they are in close contact with each other. The slit coil 6 fed from the uncoiler 7 is rolled by two rolling mills 18, and the deformed rolled material 4 after rolling is wound around the coil by the recoiler 8.

[0008] The lower roller 3 of the rolling mill 18 is
And a lower ring 14g.
b into the lower ring 14g.
A key 27 is provided between 4g. On the other hand, the upper roller 5 also includes an upper roller shaft 16 and an upper ring 15, and the upper ring 15 is fitted into a body 16 b of the upper roller shaft 16, and
A key 27 is provided between the upper ring 15 and the key b.

A driving shaft 17a of the lower roller shaft 17 and a driving shaft 16a of the upper roller shaft 16 are rotatably supported by a driving frame 21 via a plurality of bearings 20, respectively. Both 16 and 17 are rotationally driven. Driven shaft 17 of lower roller shaft 17
c and the driven shaft 16 c of the upper roller 16
, And is rotatably supported by the driven side frame 22 via the. A plurality of guides 2 are provided on the lower surface of the driven side frame 22.
5 are provided, and the guide 25 is provided with upper and lower roller shafts 1.
The guide 25 is guided by the rail 24 and is supported by the rail 24 installed in parallel with the center of the shafts 6 and 17.
4 so as to be movable in the longitudinal direction.

A cold rolling apparatus 2 according to a second embodiment includes two rolling mills 18 each including a lower roller 3 and an upper roller 5, an uncoiler 7, a leveler 9, and a conveyor 10.
The slit coil 6 fed from the uncoiler 7 is rolled by two rolling mills 18 and the deformed rolled material 4 after rolling is leveled by a leveler 9.
Then, it is transported by the conveyor 10 and cut into an appropriate length to produce a plate material.

FIG. 5 shows an embodiment of a deformed rolled material 4 rolled by the cold rolling devices 1 and 2 according to the present invention. Also,
FIG. 6 shows a main example of a section steel 12 manufactured by forming or pressing such a deformed rolled material 4.

The present invention is configured as described above, and its operation will be described below. The slit coil unwound from the uncoiler 7 is roughly rolled while being subjected to a vertical force by the upper roll 5 and the lower roll 3 of the first rolling mill 18, and subsequently the upper roll 5 of the second rolling mill 18 is rolled. It is precision rolled while receiving a vertical force between the lower roll 3 and the lower roll 3 to form a deformed rolled material 4. In the invention of the first embodiment, the deformed rolled material 4 after rolling is further formed into a coil by a recoiler 8.
On the other hand, in the invention of Example 2, the deformed rolled material after rolling is straightened by the leveler 9, conveyed by the conveyor 10, and cut into an appropriate length to produce a sheet material.

When changing the shape of the deformed rolled material produced by the cold rolling apparatus according to the present invention, the driven frame 22 of the rolling mill 18 is pulled by a hydraulic cylinder (not shown) until the driven frame retracts to the retracted position 22a. Move. Thereafter, the lower collar 14g or the lower collar 14g and the upper collar 15 are removed, and the lower collar 14z or the lower collar 14 to be used next.
z and the upper collar 15 are attached. Subsequently, the driven-side frame 22 is moved to the assembly position by pressing the driven-side frame 22 with a hydraulic cylinder.

In the above embodiment, the structure in which the driven side frame 22 is pulled by the hydraulic cylinder is described. However, for example, a method in which a rack and a pinion are combined and the pinion is driven to rotate by an electric motor, a method in which the pinion is pulled by an electric cylinder, and the like are also used. It is conceivable that the method of moving the driven frame 22 is not particularly limited.

[0015]

According to the present invention, an apparatus and a method for cold rolling a slit coil, which has not existed in the past, to produce a deformed rolled material are provided, thereby enabling cold working involving a large change in cross section. As a result, the workable plate width was able to be greatly increased to 15 mm to 150 mm. In particular, members having special electromagnetic characteristics and strength characteristics, such as members required for digital home appliances and automobile parts, have poor cold-rolling properties and are difficult to process into the required cross-sectional shape. However, it was possible to cold-roll such a material having poor cold-rolling properties.

Further, the lower roller is constituted by a lower roller shaft and a lower ring, or the upper and lower rollers are constituted by an upper and lower roller shaft and an upper and lower ring so that a driven frame supporting a driven shaft can be easily moved. The upper and lower rings can be easily replaced in a short time. For this reason, according to the present invention, the replacement of the upper and lower rings can be performed in 20 minutes, while the conventional method requires four hours to replace the rolling roll. Therefore, it was possible to cold-roll many types of deformed rolled materials by sequentially replacing the rings in one cold rolling apparatus.

Further, by providing a deformed rolled material manufactured by the above-mentioned cold rolling apparatus and a section steel made of such a deformed material, the deformed rolled material whose end portion is changed to be thin, such a deformed rolled material, and the like. A member obtained by forming or pressing a rolled material into a required cross-sectional shape could be provided. As a result, for example, when a material having poor machinability is used, by using a deformed rolled material whose end is thinned, it is possible to facilitate the processing in the final machining before the completion of the part. In addition, to provide a deformed rolled material whose end is thicker or a shaped steel formed by forming or pressing such a deformed rolled material into a required cross-sectional shape, and a shaped steel having a high section modulus without welding. By providing
It was possible to produce a component having the required strength even with a material having poor weldability.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a cold rolling apparatus 1 described in a first embodiment.

FIG. 2 is a configuration diagram of a cold rolling apparatus 2 described in a second embodiment.

FIG. 3 is a view showing a main example of upper and lower rollers 5, 3;

FIG. 4 is a front sectional view of one embodiment of the rolling mill according to claim 3;

FIG. 5 is a sectional view showing a main example of the deformed rolled material 4.

FIG. 6 is a cross-sectional view illustrating a main example of a section steel 12 formed by forming or pressing a deformed rolled material 4.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cold rolling device 2 ... Cold rolling device 3 ... Lower roller 3a ... Groove 3f ... Groove 3g ... Groove 3i ... Groove 3k ... Groove 3n ...・ Groove 4 ・ ・ ・ Deformed rolled material 5 ・ ・ ・ Upper roller 6 ・ ・ ・ Slit coil 7 ・ ・ ・ Uncoiler 8 ・ ・ ・ Recoiler 9 ・ ・ ・ Leveler 10 ・ ・ ・ Conveyor 11a ・ ・ ・ Space 11f ・ ・ ・Space 11g Space 11i Space 11k Space 11n Space 12 Shaped steel 14g Lower ring 14z Lower ring 15 Upper ring 16 Upper Roller shaft 16a Drive shaft 16b Trunk 16c Drive shaft 17 Lower roller shaft 17a Drive shaft 17b Trunk 17c Drive shaft 18 Rolling machine 20・ ・ ・ Bearing 21 ・ ・ ・ Drive side Frame 22 ... driven frame 22a ... driven frame retracted position 23 ... bearing 24 ... rail 25 ... guide 27 ... key

Claims (5)

[Claims] 1. An apparatus for cold rolling a slit coil fed from an uncoiler while applying pressure between a lower roller and an upper roller, wherein a lower roller having a groove on its outer periphery and an upper roller having a constant outer diameter are combined. Forming a rolling mill, providing a predetermined space between the upper roller and the lower roller, and passing a slit coil through the space to form a deformed rolled material having the same cross section as the shape of the space. A cold rolling apparatus characterized by being manufactured. 2. A rolling mill for use in the cold rolling apparatus according to claim 1, wherein the lower roller comprises a lower roller shaft and a lower ring, and a groove is provided on the outer periphery of a body of the lower roller shaft. The lower roller shaft is fitted into the lower roller shaft, and the driven shaft of the lower roller shaft is held by a bearing attached to the driven frame, and the driven frame is supported by rails and guides, whereby the driven frame is A rolling mill characterized in that it is configured to be movable in the axial direction of a roller. 3. A rolling mill for use in the cold rolling apparatus according to claim 1, wherein the lower roller comprises a lower roller shaft and a lower ring, and a groove is provided on an outer periphery of a body of the lower roller shaft. The upper roller is composed of an upper roller shaft and an upper ring, and an upper ring having a constant outer diameter is fitted into the body of the upper roller, and the driven shaft of the upper and lower roller shafts is a driven frame. Rolling by supporting the driven-side frame by rails and guides, whereby the driven-side frame is movable in the axial direction of the upper and lower roller shafts. Machine. 4. A deformed rolled material manufactured by the cold rolling device according to claim 1 and a deformed rolled material manufactured by the cold rolling device formed by either forming or pressing. steel. 5. A rolling mill is configured by combining a lower roller having a groove on the outer periphery and an upper roller having a constant outer diameter, and a predetermined space is provided between the upper roller and the lower roller. A cold rolling method characterized by producing a deformed rolled material having the same cross section as the shape of the space by passing the fed slit coil through the space.