JPH10192977A - Hot press straightening machine for steel shape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an efficient hot press straightening machine for steel shape having a simple structure by providing a backing positioning mechanism for positioning each backing so that top end parts of the backings are positioned on the curve to envelope as a whole between a respective backing and a press drive part, and controlling the backing altogether. SOLUTION: Backing positioning mechanism 22-26, 27-31 corresponding to backings 12-16, 17-21 are provided respectively 5 each to one side of a press machine. Eccentric wheels of respective 5 each are connected by respective one drive shaft 36, 37, by rotating drive motors 42, 43, the backings 12-21 are advanced/retreated. By suitably selecting an eccentric quantity of the eccentric wheels corresponding to respective backing 12-21, a respective displacement of each backing 12-21 corresponding to a rotation quantity of the drive shafts 36, 37 is obtained. Accordingly, a tip part of respective backing 12-21 has a difference in displacement to obtain an enveloped curve. At this state, by operating press drive parts 32, 33, straightening of a passing steel shape 11 is conducted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot press straightening machine for shaped steel, which performs press straightening in a direction perpendicular to a horizontal direction of conveying the shaped steel in manufacturing the shaped steel.

[0002]

2. Description of the Related Art For steel products, straightness of the products is regarded as important in terms of applications such as rails and construction members. Since it is small, it can be expected to be able to be performed with smaller equipment than cold equipment and to reduce the pressing work load in the refining process. Regarding this hot press straightening, Japanese Utility Model Laid-Open No. 58-43820 discloses a section steel hot press straightening machine having a plurality of pairs of opposing openable and closable abutments.

[0003]

The temperature of the product and the temperature difference within the product at the time of press straightening differ from one product to another even for the same product type and size. At the tail end, there is a considerable difference. In order to cope with these, it is necessary to appropriately change the curvature formed at the tip of the gold according to the product temperature, the temperature difference in the product, and also the product type and size. Is not disclosed.

Accordingly, the present applicant has previously filed Japanese Patent Application No.
No. 9732 proposes setting a curvature at which the tips of a plurality of golds are wrapped in order to impart a curvature in the longitudinal direction of the product (rail) by pressing, and enveloping with a plurality of sets of golds. Pressing the product by forming a curvature that corrects it, corrects partial bending of the product, and warps in the opposite direction in advance by pressing against longitudinal deformation due to thermal shrinkage in the cooling process due to the subsequent temperature difference in the product. And it can be straightened when it is cooled. However, as means for obtaining an envelope at the tips of a plurality of golds, it is conceivable to individually advance or retract the golds individually, but the apparatus becomes complicated and impractical. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a more efficient shaped steel hot press straightening machine as means for obtaining an envelope curve at a plurality of tip ends of a metal.

[0005]

According to the present invention, there is provided a semiconductor device comprising:
The hot press straightening machine for a shaped steel according to the present invention is a hot press straightening machine for a shaped steel that performs press straightening by pressing a plurality of abutments against the shaped steel from a direction orthogonal to a horizontal direction of conveyance of the shaped steel. In each of the aforesaid metal and a press drive unit for pressing and driving the relevant metal to the shaped steel, the tip of the aforesaid metal is on an envelope curve as a whole, There is a gold positioning mechanism that can position the gold and can control it collectively. Further, in the hot press straightening machine for section steel according to the second aspect, in the hot press straightening machine for a section steel according to the first aspect, the contact positioning mechanism is configured to contact a base end side of each contact. An eccentric wheel that is provided in contact with and changes the protruding position of the corresponding gold by its rotation, and a rotation drive unit that simultaneously rotates each of the eccentric wheels.

In the straightening machine according to the first and second aspects of the present invention, in order to collectively provide an envelope curve of the tip of each of the abutments, the abutment for positioning the abutments is provided. A positioning mechanism is provided. Since these contact positioning mechanisms can be controlled collectively, operability is good. In particular, in the shape steel hot press straightening machine according to claim 2, an eccentric ring is provided in contact with the base end side of each of the abutments,
By rotating this eccentric wheel, the projecting position of the abutment is changed.
Then, by operating the rotation driving means, each eccentric wheel rotates, and each abutment can be projected according to the amount of eccentricity. Therefore, the simultaneous contact portions of the abutments of the eccentric rings contacting the respective abutments are formed so as to form a predetermined envelope curve, and these eccentricities are simultaneously rotated by using the rotation driving means, whereby the abutment is performed. The tip of gold draws a constant envelope curve.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a plan view of a section steel hot press straightening machine according to an embodiment of the present invention, FIG. 2 is a sectional view thereof, FIG. 3 is an explanatory view of a metal positioning mechanism, and FIG. It is operation | movement explanatory drawing of the shape steel hot press straightening machine which concerns on form.

As shown in FIG. 1 and FIG. 2, a hot press straightening machine 10 for a shaped steel according to an embodiment of the present invention comprises , A contact positioning mechanism 22-31 provided at a base end of each of the contacts 12-21,
And a press drive unit 33 that transports and presses the abutments 17 to 21 together with the abutment positioning mechanisms 27 to 31. Hereinafter, these will be described in detail.

As shown in FIG. 3, the abutments 12 to 21 are supported by a guide member 34 and are disposed so as to be horizontally movable as indicated by an arrow A. 35. The eccentric wheels 3 attached to the drive shafts 36 and 37 are provided on the base end sides of the pair of right and left abutments 12 to 16 and 17 to 21, respectively.
8 abuts, and the projecting positions of the respective abutments 12 to 21 change depending on the abutting position of the eccentric wheel 38. The base side surfaces of the abutments 12 to 21 are provided with a pair of spring receiving seats 12a to 21a, and are provided by springs 12b to 21b which are an example of a push-back means disposed between the guide member 34 and the spring receiving seats 12a to 21a. ,
The base ends of the abutments 12 to 21 are always in contact with the eccentric wheel 38. In FIG. 3, reference numeral 39 denotes a key. The drive shafts 36 and 37 are rotatably attached to mounts 40 and 41 that can move in a direction orthogonal to the traveling direction of the section steel 11 via bearings (not shown).
Drive motors 42 and 43, which are examples of rotary drive means, are attached to the ends of the drive shafts 36 and 37, respectively, to rotate the drive shafts 36 and 37, so that the individual eccentric wheels 38 as a whole have a predetermined eccentricity. Angle rotation drive is possible.

As described above, the press machine has five abutments 12 to 16 and 17 to 21 on one side, respectively, and has a corresponding abutment positioning mechanism 22 to 26 and 27 to 31 respectively. As described above, each of the five eccentric wheels 38 has one eccentric ring 38.
Connected by the drive shafts 36 and 37 and the drive motor 4
By rotating 2, 43, the payers 12 to 21 move forward and backward. Here, as shown in FIG. 3, the maximum eccentricity δ =
L1-L2, which is the maximum displacement. By appropriately selecting the amount of eccentricity of the eccentric wheel 38 according to each of the abutments 12 to 21, the individual abutment 12 corresponding to the amount of rotation of the drive shafts 36 and 37 is determined.
To 21 individual displacement amounts. Therefore, each allowance 12
21 (i.e., the contact portion 35) have a difference in the amount of displacement, and an enveloped curve can be obtained (see FIG. 4). In this state, by operating the well-known press drive units 32 and 33 formed of a hydraulic cylinder or a screw jack, it is possible to correct the shape steel 11 passing therethrough.

FIG. 4 shows a state in which the respective abutments 12 to 21 are controlled by using the shaped steel hot press straightening machine 10 according to the above-mentioned embodiment, and the eccentricity of the respective central abutments 14, 19 is shown. When the amount δ is increased, a group of metal members protruding toward the center by the metal members 12 to 16 and a metal group of a hollow member at the center by the metal members 17 to 21 are formed. You can do it. Then, by driving the drive motors 42 and 43, the shape changes, for example, as shown in FIG.

In the above embodiment, since the leading end of the product may poke between the adjacent abutments 12 to 16 and 17 to 21 during the transport of the product, the adjacent abutments 12 to 16 may be inserted.
It is also effective to connect between 16, 17 and 21 with, for example, a flat plate having a bendable thickness. The number of the gold is not limited to five, and the present invention can be applied to four or less or six or more. Further, the arrangement of the gold is not limited to the parallel arrangement in the present embodiment, but may be a staggered arrangement with respect to the opposing gold as required.

The straightening of the shaped steel product by hot is performed at a temperature of 400 ° C. or more in a post-process of a finish rolling mill (not shown). . After finishing mill processing, the shaped steel product is conveyed into the press straightening machine by conveying rolls (not shown).

[0014]

According to the first and second aspects of the present invention, there is provided a hot press straightening machine for a shaped steel which performs press straightening from a direction perpendicular to a horizontal direction of the transport of the shaped steel, as is apparent from the above description. In the hot press straightening machine having the aforesaid metal, a device capable of collectively giving an envelope curve of the tip of each metal is obtained. As a result, it is possible to provide a hot press straightening machine for a section steel which is simpler in structure and more efficient. In particular, in the section steel hot press straightening machine according to claim 2, when the rotary drive means is driven, the eccentric wheel rotates, the projecting position of the abutment changes, and the curve enveloping the leading end of the abutment can be easily changed. Can be changed.

[Brief description of the drawings]

FIG. 1 is a plan view of a section press hot straightening machine according to an embodiment of the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is an explanatory view of the same-kin positioning mechanism.

FIG. 4 is an operation explanatory view of the section steel hot press straightening machine according to the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Hot press straightening machine of section steel 11 Section steel 12-21 Compensation 12a-21a
Spring receiving seats 12b-21b Spring (push-back means) 22-31 Contact positioning mechanism 32, 33 Press drive unit 34 Guide member 35 Contact unit 36 Drive shaft 37 Drive shaft 38 Eccentric wheel 39 Key 40 Mount 41 Mount 42 Drive motor ( (Rotation driving means) 43 Drive motor (Rotation driving means)

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Tokio Kawabata 1-1, Hibata-cho, Tobata-ku, Kitakyushu-shi, Fukuoka New Nippon Steel Corporation Yawata Works (72) Inventor Yoshitaka Hattori 20 Shintomi, Futtsu-shi, Chiba -1 Inside Nippon Steel Corporation Technology Development Division

Claims (2)

[Claims] 1. A hot press straightening machine for a section steel, wherein a plurality of abutments are pressed against the section steel from a direction orthogonal to a horizontal direction of the section steel to perform press straightening, And, between the press drive unit that presses the applicable gold against the shaped steel, so that the tips of the aforesaid metal are on a curve that envelopes as a whole, and perform positioning of the individual gold, A hot press straightening machine for shaped steel, characterized by having a contact positioning mechanism that can be controlled collectively. 2. The abutment positioning mechanism is provided in contact with a base end side of each abutment, and simultaneously rotates an eccentric ring that changes a projecting position of the corresponding gold by rotating the abutment. The hot press straightening machine for shaped steel according to claim 1, further comprising a rotation driving means for causing the section to rotate.