JP3419551B2 - Rolled material joining equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolled material joining apparatus for joining ends of rolled materials to each other. 2. Description of the Related Art In a conventional hot rolling mill (hot strip mill), bar materials rolled by a rough rolling mill are separately supplied to a finishing mill, and a strip material having a desired thickness is obtained. I was getting it. However, such a method cannot uniformly roll the entire rolled material, and tends to cause defects at the front end and the rear end, thereby reducing the yield of the rolled material and increasing the rolling speed due to biting / tail loss. There was a problem that was difficult to make. [0003] In order to solve such a problem, there has been proposed a joining apparatus for joining a rear end of a preceding rolled material and a front end of a succeeding rolled material in order to continuously supply the rolled material to a finishing mill. (For example, JP-A-62-252603, JP-A-63-93408, JP-B-5-139)
No.). SUMMARY OF THE INVENTION Japanese Patent Application Laid-Open No. 62-2526
No. 03 “plate joining method” is a method in which joints are driven into each other between ends of sheets to be joined, and a large number of joints are required to secure sufficient joining strength over the entire width of the rolled material. There was a problem that the joint had to be driven in a short time, automation (mechanization) was difficult, and the joint could not be uniformly rolled. Japanese Patent Publication No. 5-139, "Strip Plate Welding Apparatus" is an apparatus for welding a rear end and a front end while traveling with a rolled material. Is time consuming, so that the entire equipment tends to be long. Furthermore, the "bar joining equipment" of JP-A-63-93408 forms a loop in a rolled material and presses the rear end and the front end.
There was a problem that it was difficult to secure sufficient joining strength over the entire width of the rolled material. The present invention has been made to solve the various problems described above. That is, an object of the present invention is to provide a rolled material joining apparatus capable of joining with sufficient joining strength over the entire width of a rolled material in a short time. According to the present invention, there is provided a clamp device for holding a rear end portion of a preceding rolled material and a front end portion of a succeeding rolled material so as to overlap and horizontally clamp the overlapped portion, and Pressure welding device, and in a rolled material joining device comprising: a lifting device capable of vertically moving the rear end portion of the preceding rolled material or the leading end portion of the subsequent rolled material, and the rear end lower surface of the preceding rolled material and the subsequent rolled material. A cutting device that simultaneously cuts the top surface of the tip, the cutting device comprising: a conical cutter that rotates around an axis that is inclined with respect to the horizontal; and a full width of the rolled material from a position off the rolled material. A lateral movement device for moving the conical cutter horizontally in the width direction, the conical cutter having a pair of truncated conical surfaces whose vertices face outward, and a top portion of the truncated conical surface. Both the bottoms are almost horizontal, which results in a frusto-conical surface Wherein the uppermost part and the lowermost part of the rolled material contact the rear end lower surface and the front end upper surface at the same time, respectively. According to the configuration of the present invention, the uppermost and lowermost portions of the pair of truncated conical surfaces of the conical cutter are both substantially horizontal,
Since the uppermost portion and the lowermost portion simultaneously contact the lower surface of the rear end portion of the preceding rolled material and the upper surface of the front end portion of the succeeding rolled material at the same time, the rear end portion of the preceding rolled material is raised by the elevating device, while rotating the conical cutter. By simply moving the conical cutter in the width direction of the rolled material over the entire width of the rolled material from the position where the rolled material has been removed by the lateral moving device, the rear end lower surface of the preceding rolled material and the entire width of the rolled material in a short time The upper surface of the leading end of the succeeding rolled material can be cut at the same time, and by pressing it with a pressure welding device, it is possible to join with sufficient bonding strength in a short time over the entire width of the rolled material. Preferred embodiments of the present invention will be described below with reference to the drawings. In the drawings, common portions are denoted by the same reference numerals, and redundant description is omitted. FIG. 1 is an overall configuration diagram showing an embodiment of a rolled material joining apparatus according to the present invention,
FIG. 2 is a partially enlarged view of FIG. 1 and 2, a rolled material joining apparatus 10 according to the present invention includes a rear end clamp device 14 mounted on a pedestal 12 and capable of vertically moving the rear end portion of the preceding rolled material 1 while horizontally holding the rear end thereof. A tip clamping device 16 mounted on the top 12 for horizontally holding the leading end of the succeeding rolled material 2, and a cutting device for simultaneously cutting the rear end lower surface of the preceding rolled material 1 and the leading end upper surface of the succeeding rolled material 2 18
And a reduction holding device 20 for holding the processed surfaces 1a and 2a (see FIG. 2) in a reduced state, and superimposing the processed surfaces 1a and 2a of the preceding rolled material 1 and the succeeding rolled material 2 to substantially reduce the rolled materials 1 and 2. A pressure welding device 22 for compressing and joining to the same thickness. In FIG. 1 and FIG.
Is a conical cutter 24 that rotates about an axis X that is inclined with respect to the horizontal, and a lateral movement device that horizontally moves the conical cutter 24 in the width direction over the entire width of the rolled material from a position off the rolled materials 1 and 2. 26. As shown in FIG. 2B, the conical cutter 24 has a pair of truncated conical surfaces 24a and 24b whose vertices face outward, and both the uppermost and lowermost portions of the truncated conical surfaces are substantially horizontal. Accordingly, the uppermost portion and the lowermost portion of the truncated conical surface simultaneously come into contact with the lower surface of the rear end portion of the preceding rolled material 1 and the upper surface of the distal end portion of the subsequent rolled material 2 at the same time. The conical cutter 24 is driven to rotate about an axis X by a cutter driving device 25. Also, the lateral movement device 26
Has a traversing cylinder 26b for horizontally moving a traversing table 26a to which the cutter driving device 25 is attached. With such a configuration, the rear end portion of the preceding rolled material 1 is raised by the rear end clamp device 14, and while the conical cutter 24 is being rotated,
By simply moving the conical cutter 24 in the width direction of the rolled material 1 or 2 over the entire width of the rolled material from the position where the rolled material 1 or 2 is displaced by the lateral moving device 26, the preceding rolling is performed in a short time over the entire width of the rolled material. The lower surface of the rear end of the material 1 and the upper surface of the front end of the succeeding rolled material 2 can be cut simultaneously. In FIG. 1 and FIG. 2, a rear end clamping device 14 includes a plurality of rollers 15a for horizontally supporting a rear end of the preceding rolled material 1 and a rear end of the preceding rolled material 1 between the rollers 15a. , A processing height H at which the lower surface of the rear end of the preceding rolled material 1 is brought into contact with the upper surface of the cutter 24, and a rear end of the preceding rolled material 1 which is substantially at the same height as the front end of the subsequent rolled material 2. Roller 15 between the press-contact height L
a and a lifting device for moving the clamp roller 15b up and down. The lifting device is, for example, a hydraulic cylinder 15.
c and a guide rod 15d. With such a configuration,
The rear end of the preceding rolled material 1 can be clamped by the clamp roller 15b while the rear end of the preceding rolled material 1 is horizontally supported by the roller 15a. Further, the roller 15a and the clamp roller 15b are held at the processing height H by the hydraulic cylinder 15c of the elevating device, and the lower surface of the rear end portion of the preceding rolled material 1 and the upper surface of the leading end portion of the succeeding rolled material 2 by the single cutter 24. At the same time, and while maintaining the press contact height L, the processing surfaces 1a, 2a of the preceding rolled material 1 and the succeeding rolled material 2
a can be overlapped and compressed and joined by the pressing device 22. The leading end clamping device 16 includes a plurality of rollers 17a for horizontally supporting the leading end of the succeeding rolled material 2, and a clamp roller 17b for sandwiching the leading end of the succeeding rolled material 2 between the rollers 17a. Also, the clamp roller 17
b can be moved up and down by a hydraulic cylinder 17c. With such a configuration, the clamp roller 17 is held while the tip of the succeeding rolled material 2 is horizontally supported by the roller 17a.
The leading end of the succeeding rolled material 2 can be clamped by b. The pressing device 22 includes an upper die 23a having a lower surface in contact with the upper surface of the rear end of the preceding rolled material 1, a lower die 23b having an upper surface in contact with the lower surface of the leading end of the succeeding rolled material 2, and an upper die 2b.
Press device 23 for holding and compressing 3a and lower mold 23b
c. The lower mold 23b is fixed to the pedestal 12. The upper die 23a is a ram 23 of the press device 23c.
e, and is adapted to move up and down together with the ram 23e. With this configuration, during the cutting by the cutting device 18, the rear end of the preceding rolled material 1 and the front end of the succeeding rolled material 2 can be supported by the upper die 23a and the lower die 23b, and the pressing device 23c By lowering the ram 23e, the working surfaces 1a and 2a of the preceding rolled material 1 and the succeeding rolled material 2 can be superimposed and compressed immediately after the completion of the cutting. In addition, by compressing the overlapped portion to approximately the same thickness as the rolled materials 1 and 2 by this compression, the joint can be rolled almost uniformly with almost no unevenness in the joint. The reduction holding device 20 burns flammable gas such as COG (coke oven gas), LPG, LNG, etc. with less oxygen than the amount for complete combustion, and uses a reducing flame containing reducing radicals to reduce the flammable gas. 1, which is attached to the frame of the roller 15a, ascends and descends together with the frame of the roller 15a, and is reduced toward the processing surfaces 1a, 2a of the preceding rolled material 1 and the succeeding rolled material 2 as shown in FIG. It is designed to blow gas. With such a configuration,
Cutting process by cutting device 18 and pressure welding device 2
During the pressure welding step by 2, the processing surfaces 1a and 2a are kept in a reduced state, their oxidation is prevented, and high bonding strength can be secured. The rolled material joining apparatus shown in FIGS. 1 and 2 joins the rear end of the preceding rolled material and the front end of the succeeding rolled material while continuously supplying the rolled material to the finishing mill. In addition, it is preferable to install the apparatus on a suitable carriage running in the rolling direction, but the present invention is not limited to this. For example, the apparatus may be fixedly incorporated in a rolling facility together with an apparatus for forming a rolled material into a loop. Further, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention. As described above, according to the structure of the present invention, the lower surface of the rear end portion of the preceding rolled material and the upper surface of the front end portion of the succeeding rolled material are simultaneously cut over the entire width of the rolled material in a short time. By pressing the rolled material with a pressure welding device, the material can be bonded in a short time with sufficient bonding strength over the entire width of the rolled material. Therefore, the rolled material joining apparatus of the present invention has an excellent effect that it can be joined with sufficient joining strength over the entire width of the rolled material in a short time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram showing an embodiment of a rolled material joining apparatus according to the present invention. FIG. 2 is a partially enlarged view of FIG. [Description of Signs] 1 Pre-rolled material 1a Worked surface 2 Subsequent rolled material 2a Worked surface 10 Rolled material joining device 12 Pedestal 14 Rear end clamp device 15a Roller 15b Clamp roller 15c Lifting device 15d Guide rod 16 Tip clamp device 17a Roller 17b Clamp Roller 17c Hydraulic cylinder 18 Cutting machine 20 Reduction holding device (reducing flame burner) 22 Pressing device 23a Upper die 23b Lower die 23c Pressing device 23e Ram 24 Conical cutter 24a, 24b Truncated conical surface 25 Cutter driving device 26 Lateral moving device 26a traversing table 26b traversing cylinder X inclined axis H working height L press-contact height Z horizontal axis

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nobuhiro Tasoe 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Pref. No. 33 Sumitomo Metal Industries, Ltd. (72) Inventor Koichi Sakamoto 4-53, Kitahama, Chuo-ku, Osaka-shi Sumitomo Metal Industries, Ltd. (72) Inventor Tadao Ebukuro 4-5-Kitahama, Chuo-ku, Osaka-shi No. 33 Sumitomo Metal Industries, Ltd. (56) References JP-A-6-335785 (JP, A) JP-A-60-244407 (JP, A) JP-A-60-184408 (JP, A) -122005 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21B 15/00 B21B 1/26 B23P 11/00

Claims (1)

(57) [Claims 1] A clamp device for horizontally sandwiching a rear end portion of a preceding rolled material and a front end portion of a subsequent rolled material, and a pressing device for pressing the overlapped portion horizontally. In a rolled material joining apparatus comprising: a lifting device capable of vertically moving the rear end of the preceding rolled material or the front end of the succeeding rolled material; and the lower end of the rear end of the preceding rolled material and the front end upper surface of the succeeding rolled material. A cutting device that cuts at the same time,
The cutting device includes a conical cutter that rotates about an axis inclined with respect to the horizontal, and a lateral movement that horizontally moves the conical cutter in the width direction over the entire width of the rolled material from a position where the rolled material is removed. Wherein the conical cutter has a pair of frusto-conical surfaces with the vertices facing outward, the top and bottom of the frusto-conical surfaces both being substantially horizontal, thereby forming a truncated cone. A rolled material joining apparatus, wherein an uppermost portion and a lowermost portion of a conical surface simultaneously contact the lower surface of the rear end portion and the upper surface of the front end portion, respectively.