JPH01293902A - Device for manufacturing shape with fin - Google Patents

Abstract

PURPOSE:To manufacture a shape with fins whose height is three or more times a fin thickness by installing a fin drafting unit provided with right and left roll pieces and a disk roll being freely turnable against a horizontal roll and pushing the roller pieces in the right and left directions. CONSTITUTION:A groove 5 is formed in a horizontal roll 4. A fin drafting unit with roll pieces 7-1, 7-2 tilting to a frames 6 and supported by the frames 6. A disk roll 8 is a circular disk shape having inclined planes 10 being along conical planes of the pieces 7-1, 7-2 and is put on the roll 4 to be freely rotatable on the roll 4 using the same axis as that of the roll 4. As for rolling of a shape with fins, the roll 8 pushes the pieces 7-1, 7-2 in the right and left directions through the planes 10. Therefore, the pieces 7-1, 7-2 are pushed on a web 1 and fins 2 and turn with transfer of a rolled stock. Rotation of the pieces 7-1, 7-2 transmits to the roll 8 and the roll 8 reversely turns to the roll 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for manufacturing finned sections by rolling.

FIGS. 7A, 7B, and 7C are diagrams showing examples of cross sections of finned sections. In recent years, there has been an increasing demand for finned sections, for example in the following fields, and the present invention relates to an apparatus for manufacturing these finned sections by rolling.

For example, if the web 1 of the profile is made thin and provided with fins 2, a lightweight and high-strength structural material can be obtained.

When used in construction, the web 1 is provided with holes for piping and wiring, and at this time it is preferable to provide fins in the web 1 for reinforcement.

As another example, as shown in FIG. 7(C), the floor plate 13
In some cases, fins 2 are provided to support the.

[Prior Art] There is no prior art showing a special rolling method for producing finned sections.

Figure 8 shows a method assuming that a conventional rolling machine is used to manufacture a finned section, and a assembled steel billet with a fin-shaped thick wall part shown in (A) is manufactured using a breakdown mill. Then, it is rolled by (B) upper and lower horizontal rolls 4 having blind hole shapes 14 shown in the figure, or (C) upper and lower horizontal rolls 4 and vertical rolls 1 having blind hole shapes 14 shown in the figure.
Roll in a universal mill with 5.

However, this method causes the following problems.

In FIG. 7(a), W is the thickness of the fin, and h is the height of the fin. There are many requests for finned sections with h of 3w or more and fin corners with a small radius and side surfaces S close to perpendicular to the web.However, according to the knowledge of the present inventors, the conventional rolling method does not allow the blind hole type 14. Even if the rolling conditions are devised to make it easier to fill with metal, the fin height h is less than 1.6W,
Further, as shown in FIG. 7(e), the radius of the corner of the formed fin is large, and the side surface S of the fin must also be inclined, making it difficult to obtain a finned section having a desirable shape. Therefore, the seventh
As shown in Figure (D), a finned section in which angle iron 18 or the like is welded to the web, and a finned section in which a steel pipe 19 is inserted into the web and welded as shown in (F) are also used. However, the welding process is cumbersome, and the demands for weight reduction and high strength cannot be fully satisfied.

[Problems to be Solved by the Invention] The present invention provides a finned profile in which the fin height h is three times or more the fin wall thickness W, the R is small, and the side surface S of the fin is close to perpendicular to the web. A rolling apparatus that can be manufactured is disclosed.

[Means for Solving the Problems] FIG. 1 is a schematic front view of a manufacturing apparatus for a finned profile according to the present invention. In the present invention, grooves 5 are carved in the horizontal roll 4. For example, in the finned section shown in Figure 7 (a),
Grooves 5 are carved on each of the upper and lower horizontal rolls 4. For example, in the case of a finned web whose one side is smooth as shown in FIG. do. The following fin reduction unit is arranged in the groove portion 5. The fin rolling unit is provided with piece-shaped rolls 7-1 and 7-2 which are tilted and pivotally supported by the frame 6. In the present invention, the piece-shaped roll refers to a truncated cone-shaped roll as shown in FIG. The fin reduction unit has piece-shaped rolls 7-1 and 7-2.
A disc roll 8 is placed between them. In the present invention, the disc roll 8 is a piece-shaped roll 7-1.7 as shown in FIG.
The roll is a disc-shaped roll having a slope 10 along the conical surface of -2 around the circumference, and is provided on the horizontal roll 4 so that it can freely rotate on the horizontal roll 4 about the same axis as the horizontal roll 4. The disc roll 8 is divided into two, for example, in the shape of a semicircle, and the horizontal roll 4
By combining them on the fitting portion 11 of the two, it is possible to arrange them as described above.

FIG. 2 is a view along the arrow X--X in FIG. 1.

The piece-shaped rolls 7-1 and 7-2 are attached to the left and right frames 6, and the frame 6 is attached to the left and right frames 6, as shown in Fig. 2f, for example.
It is also possible to connect the front and rear frames to form a single frame. The frame 6 is attached to the housing or chock (not shown) of the horizontal roll 4, but when attaching it, the frame 6 is attached to the groove side part 9 of the groove part 5 and the piece-shaped rolls 7-1 and 7-2.
Attach the fins 2 so that they are rolled down in the thickness direction. When rolling a finned profile, the disc roll 8 presses the piece roll, but this pressure is transmitted to the piece roll via the slope 10 of the disc roll, and the piece roll 7-
1. Pressure 7-2 in the left and right direction. The piece-shaped roll is therefore pressed against the web 1 and the fins 2 and rotated by the running of the rolled material. The rotation of the piece-shaped roll is transmitted to the disc roll 8, which rotates in the opposite direction of the horizontal roll 4.

FIG. 3 shows an example of a rolling machine for the finned profile shown in FIG. 7(c), in which one fin is provided on the web, for example, in this case, the fin 7-2 and the groove side 9 are connected to the fin 2. is rolled down in the thickness direction, but the piece-shaped roll 7-1 contacts the groove side portion 9 and rotates.

[Function] FIG. 4 is a diagram showing the action of rolling down the fin 2 in the thickness direction according to the present invention, in which (A) is a schematic front view and (B) is a schematic plan view. The rolled material is rolled in the direction of arrow 12. Reference numeral 16 indicates the lower surface of the piece-shaped roll, and 17 indicates the upper surface of the piece-shaped roll.

The fin portion with a wall thickness of dl before rolling first contacts the piece roll at point P, and as the piece roll rotates (the rolled material moves in the direction of arrow 12), the piece roll's point P changes to Q. During this time, the fins 2 of the rolled material are rolled down by the groove side 9 and the conical surface between 16 and 17 of the piece-shaped roll, resulting in a fin having a thickness of d2.

FIG. 5 is a diagram showing an example of a rolling line for sections, in which BD is a breakdown stand, El and R2 are etching stands, R1 and R2 are universal stands, and F is a finishing universal stand.

For example, the finned profile manufacturing apparatus of the present invention has R2 and R2.
It can be placed as a compact guide between the two.

FIG. 6 shows an example of the change in the cross-sectional shape of the finned rolled material at that time. In Figure 6, (BD~E1~R1) are BD, E
This is a rolled material with fins that has been roughly shaped in the L and R processes, and the web and flange are rolled down in R2, but the fins are not rolled down in the thickness direction with such blind hole type horizontal rolls.

(A) is a rolling device for finned sections of the present invention, in which the sections pass through (A) with a pushing force of R8 and a pulling force of R2;
During the pass, the fins are rolled down in the thickness direction. Between R2 and R2, the temperature of the rolled material is higher than that in the finishing universal mill, so it is easy to form fins, and it is suitable for forming fins with high height and thin wall thickness.

By arranging these compact guides in two or more stages, the fin forming effect can be further enhanced.

The finned profile that passed through (A) is (R2) and (F)
It is rolled into finished products.

In FIG. 6, (F+B) is an example in which the fin rolling unit of the present invention is arranged on the horizontal roll of a finishing universal stand, and is suitable for manufacturing finned sections with high height and thin wall thickness.

Furthermore, in the case of a product that requires a low fin height, the (F+B) format may be applied only to the finished universal stand.

[Effects of the Invention] When the finned profile manufacturing apparatus of the present invention is used, for example, the height h of the fin is three times or more the wall thickness W of the fin, the radius of the corner between the fin and the web is small, and the fin It is possible to produce finned sections whose sides are nearly perpendicular to the web. Using the apparatus of the present invention further provides the following effects.

Since the fin portion is directly pressurized, it has excellent formability and is less prone to fin collapse, lap flaws, and abrasion flaws. If the horizontal roll 4 is the driving roll, even if the piece-shaped roll is not driven,
Suitable rolling material can be produced smoothly.

The axial load generated on the horizontal roll side due to the reduction of the fin portion is balanced with the flange shaping load.

The load generated on the side of the parapet roll due to the reduction of the fin part is balanced by the metal touch via the disc roll.

The device of the present invention is relatively strong and rigid, and the device also has excellent material tip guidance and eliminates bumping accidents.

Although the present invention has been described above with respect to a finned H-shaped member, by using the apparatus of the present invention, fins of a preferable shape can be formed on the web even for finned members other than H-shaped.

[Brief explanation of the drawing]

FIG. 1 is a front view of the entire example of the apparatus of the present invention, FIG. 2 is a schematic cross-sectional view taken along line XX in FIG. 1, and FIG. 3 is an example of rolling a finned section with one fin. Figure 4 is a diagram showing the action of rolling down the fin in the thickness direction, Figure 5 is a diagram showing an example of a rolling line for a profile, and Figure 6 is
The figure which shows the transition of the cross-sectional shape in the process of forming a finned section. FIG. 7 is a diagram showing an example of the cross-sectional shape of a finned section, and FIG. 8 is a diagram showing an example of a conventional rolling method. 1: Web, 2: Fin, 3: Profile with fins, 4: Horizontal roll, 5: Groove, 6: Frame. 7 (7-1, 7-2): Piece type roll, 8: Disc roll, 9: Groove side part, 10: Disc roll slope, 11:
Disc roll fitting part, 12: advancing direction of rolled material, 13
: floor board, 14: blind hole type, 15: vertical roll, 16: lower surface of piece-shaped roll, 17: upper surface of piece-shaped roll. Patent applicant Nippon Steel Corporation

Claims (1)

[Claims] In an apparatus for forming and rolling a finned profile 3 in which a web 1 is provided with fins 2 in the longitudinal direction of the profile, the left and right sides are tilted and pivoted on a frame 6 in grooves 5 cut in a horizontal roll 4. It has piece-shaped rolls 7-1 and 7-2, and between the piece-shaped rolls 7-1 and 7-2, the horizontal roll 4 is rotatably connected. A fin rolling unit having disc rolls 8 provided to apply pressure to the left and right, respectively, is connected to the fin 2 by piece-shaped rolls 7-1, 7-2 and groove side portions 9.
A manufacturing device for a finned profile, characterized in that it is provided so as to be rolled down in the thickness direction.