JP3644459B2 - Rolling material joining device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a rolled material joining apparatus that joins a trailing end of a preceding rolled material and a leading end of a succeeding rolled material while traveling with the rolled material in a hot rolling facility.
[0002]
[Prior art]
In a conventional hot rolling facility (hot strip mill), bar materials rolled by a roughing mill are separately supplied to a finishing mill to obtain a strip material having a desired plate thickness. However, with such means, the entire rolled material cannot be uniformly rolled, and the end portions (front end portion and rear end portion) of the rolled material are likely to be defective. Therefore, there is a problem that it is difficult to increase the rolling speed.
[0003]
In order to solve such a problem, a joining apparatus for joining the rear end of the preceding rolled material and the front end of the next rolled material in order to continuously supply the rolled material to the finishing mill has been proposed ( For example, JP-A-62-2252603, JP-A-63-93408, JP-B-5-139).
[0004]
[Problems to be solved by the invention]
However, Japanese Patent Application Laid-Open No. 62-252603 discloses a “plate joining method” in which joints are driven between the ends of the plates to be joined, but the joint strength is sufficient over the entire width of the rolled material. In order to ensure this, it is necessary to drive a large number of joints in a short time, and automation (mechanization) is difficult, and the joint part cannot be uniformly rolled.
[0005]
In addition, the “bar joining facility” of JP-A-63-93408 forms a loop in the rolled material and press-contacts the rear end and the front end, but in order to form a relatively thick bar material in the loop, There is a problem that the bar material is likely to be bent and a sufficient joining time cannot be secured, and even if the rear end and the leading end are simply press-contacted, sufficient joining strength cannot be secured over the entire width of the rolled material.
[0006]
Furthermore, the “Bet plate running welding device” of Japanese Patent Publication No. 5-139 is a device that welds and joins the rear end and the leading end while running with the rolled material, but it takes time to weld a wide rolled material. For this reason, there is a problem in that the entire facility tends to be long and unevenness is likely to occur at the joint, making it difficult to uniformly roll the joint.
[0007]
The present invention has been made to solve the various problems described above. That is, the first object of the present invention is that the trailing end of the preceding rolled material and the leading end of the following rolled material can be joined while traveling together with the rolled material, and the entire width of the rolled material is sufficient in a short time. To provide a rolled material joining apparatus that can be joined with a joining strength and that can substantially uniformly process the joined portion with less unevenness in the joined portion, and can continuously supply the rolled material to a finishing mill. It is in.
[0008]
In addition, in the conventional means, since the entire apparatus is on the rolling line, it is necessary to replace parts and perform maintenance and inspection work on the rolling line. There was a problem that took a long time.
[0009]
The present invention has been made to solve such problems. That is, a second object of the present invention is to provide a rolled material joining apparatus capable of performing parts replacement and maintenance and inspection work for each part of the apparatus in a state of easy access and good workability.
[0010]
[Means for Solving the Problems]
According to the present invention, a cart that travels in the rolling direction, a rear end clamping device that can be moved up and down by horizontally holding the rear end portion of the rolled material that is mounted on the cart and precedes, and is mounted on the cart. A front end clamping device that horizontally holds the front end portion of the rolled material, a processing device that cuts the lower surface of the rear end portion of the preceding rolled material and the upper surface of the front end portion of the subsequent rolled material, and holds the processed surface in a reduced state. A reduction holding device, and a pressure welding device that superimposes the processed surfaces of the preceding rolled material and the subsequent rolled material and compresses and joins the rolled material to substantially the same thickness as the rolled material, and the processing device has an axis in the width direction of the rolled material. It consists of a cylindrical cutter that rotates around the center, a swinging device that swings the cutter in an oblique direction, and a return device that moves the cutter back and forth in the rolling direction, and can be moved laterally on the carriage. Provided on the above-mentioned processing device and tip clamp And a side shift device that is arranged in parallel at a predetermined stop position of the carriage, and on which the lateral slide stage is moved laterally. A rolled material joining apparatus is provided.
[0011]
According to a preferred embodiment of the present invention, the carriage and the side shift device have a slide guide that is aligned in the lateral direction at a predetermined stop position, and the side shift device moves the lateral slide base in the lateral direction at the stop position. And an engagement fitting that is movably engaged with each other, and a linear cylinder that moves the engagement fitting in the lateral direction.
[0012]
[Action]
According to the apparatus of the present invention, the carriage travels in the rolling direction while sandwiching the preceding rolled material and the succeeding rolled material by the trailing end clamping device and the leading end clamping device. Can be supplied. Further, since the entire width of the rolled material can be joined in two steps of cutting by the processing device and pressure welding by the pressure welding device, the joining time can be greatly shortened and the entire length of the rolling equipment can be shortened.
[0013]
Furthermore, while the processing surface is held in a reduced state by the reduction holding device, the lower surface of the rear end portion and the upper surface of the front end portion are cut by the processing device, and the processing surface is compressed to almost the same thickness as the rolled material by the pressure welding device. There is almost no oxidation of the surface, and the processed surfaces can be brought into close contact with each other without any gap, so that the entire width of the rolled material can be joined with sufficient joining strength. In addition, since the processed surfaces are overlapped by the pressure welding apparatus and compressed to approximately the same thickness as the rolled material and joined, there is almost no unevenness in the joined portion, and the joined portion can be rolled almost uniformly.
[0014]
Further, according to the configuration of the present invention, the lateral slide base is provided on the carriage so as to be laterally movable, the processing device and the tip clamp device are mounted thereon, and the side shift device is a predetermined part of the carriage. Since the horizontal slide table is horizontally moved on the stop position, the side shift device is moved laterally by the side shift device at a predetermined stop position (for example, standby position). Can move up and work away from the rolling line. Therefore, it is easy to access each part and the workability is good, and the cutter tip can be replaced and the maintenance and inspection work of the cutter part can be performed reliably in a short time, so that productivity can be improved and labor can be saved. .
[0015]
【Example】
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.
FIG. 1 is an overall configuration diagram of a rolled material joining apparatus according to the present invention, and is a configuration diagram of main parts thereof in FIG. 1 and 2, the rolled material joining apparatus 10 of the present invention can move up and down by horizontally holding a carriage 12 traveling in the rolling direction and a rear end portion of the rolled material 1 mounted on the carriage 12 and preceding the rolling material 1. A rear end clamping device 14, a front end clamping device 16 that horizontally attaches the front end of the rolled material 2 mounted on the carriage 12, a lower surface of the rear end of the preceding rolled material 1, and a front end of the subsequent rolled material 2. A processing device 18 for cutting the upper surface, a reduction holding device 20 for holding the processed surfaces 1a and 2a (FIG. 2) in a reduced state, and processed surfaces 1a and 2a of the preceding rolled material 1 and the succeeding rolled material 2 are overlapped. A pressure welding device 22 that compresses and joins the rolled materials 1 and 2 to substantially the same thickness.
[0016]
In FIG. 2, the processing device 18 includes a cylindrical cutter 19a that rotates about the axis Z in the width direction of the rolled materials 1 and 2, a swing device 19b that swings the cutter 19a in an oblique direction, and a cutter 19a. And a backward movement device 19c that moves back and forth in the rolling direction (left and right in the figure). The cutter 19a is attached to the distal end portion of the swing arm 19d so as to be rotatable about an axis Z, and is rotated by a driving device (not shown). The cutter 19a is longer than the entire width of the rolled materials 1 and 2, and has a plurality of blades having the same diameter on the outer periphery thereof, and is simultaneously cut by the single cutter 19a over the entire width of the rolled materials 1 and 2. ing. The swinging device 19b includes a swinging arm 19d and a swinging cylinder (not shown). The end of the swinging arm 19d is pivotally attached to the return stand 19e of the return moving device 19c, and the swinging arm 19d is swung. By moving the cutter 19a, the cutter 19a is swung in an oblique direction in an arc shape so that the height of the cutter 19a can be adjusted. The return device 19c includes a return table 19e and a return cylinder 19g, and moves the cutter 19a back and forth diagonally in the rolling direction (left and right in the figure) by reciprocating the return table 19e slightly diagonally. ing. With this configuration, both the rear end lower surface of the preceding rolled material 1 and the upper end surface of the subsequent rolled material 2 can be cut by adjusting the height of the cutter 19a and moving the cutter 19a back and forth.
[0017]
The rear end clamping device 14 includes a plurality of rollers 15a that horizontally support the rear end of the preceding rolled material 1, and a clamp 15b that moves up and down to sandwich the rear end of the preceding rolled material 1 between the rollers 15a. The processing height H for bringing the lower surface of the rear end portion of the preceding rolled material 1 into contact with the upper surface of the cutter 19a and the pressure contact height for holding the rear end portion of the preceding rolled material 1 at substantially the same height as the front end portion of the subsequent rolled material 2. L is composed of an elevating cylinder 15c that moves the roller 15a and the clamp 15b up and down. With this configuration, the rear end portion of the preceding rolled material 1 can be held by the clamp 15b while the rear end portion of the preceding rolled material 1 is horizontally supported by the roller 15a. Further, the roller 15a and the clamp 15b are held at the processing height H by the lifting cylinder 15c, and the lower surface of the rear end portion of the preceding rolled material 1 and the upper surface of the front end portion of the subsequent rolled material 2 are cut by a single cutter 19a. The processed surfaces 1a and 2a of the preceding rolled material 1 and the succeeding rolled material 2 can be superposed while being held at the pressure height L and compressed and joined by the pressure welding device 22.
[0018]
The front end clamping device 16 includes a plurality of rollers 17a that horizontally support the front end portion of the subsequent rolled material 1, and a clamp 17b that moves up and down to sandwich the front end portion of the subsequent rolled material 2 between the rollers 17a. . This configuration is the same as that of the rear end clamping device 14 except that there is no lifting mechanism. With this configuration, the front end portion of the subsequent rolled material 2 can be held by the clamp 17b while the front end portion of the subsequent rolled material 2 is horizontally supported by the roller 17a.
[0019]
The pressure welding device 22 includes an upper mold 23a having a lower surface in contact with the upper surface of the rear end portion of the preceding rolled material 1, a lower mold 23b having an upper surface in contact with the lower surface of the front end portion of the subsequent rolled material 2, and an upper mold 23a and a lower mold 23b. And a pressing device 23c for sandwiching and compressing. The lower mold 23 b is fixed to the carriage 12. The upper mold 23a is attached to the lower surface of the ram 23e of the press device 23c, and moves up and down together with the ram 23e. With this configuration, during processing by the processing device 18, the rear end portion of the preceding rolled material 1 and the front end portion of the subsequent rolled material 2 can be supported by the upper die 23a and the lower die 23b, and the press device 23c can support the ram. By lowering 23e, the processed surfaces 1a and 2a of the preceding rolled material 1 and the subsequent rolled material 2 can be superimposed and compressed immediately after the processing is completed. In addition, by compressing the overlapped portion to approximately the same thickness as the rolled materials 1 and 2 by this compression, there is almost no unevenness in the joint portion, and the joint portion can be rolled almost uniformly.
[0020]
The reduction holding device 20 burns combustible gases such as COG (coke oven gas), LPG, and LNG with less oxygen than the amount that completely burns, and contains reducing radicals such as hydrogen radicals and CH ₂ O radicals. Reducing flame burners 20a and 20b that form a reducing state with flames. As shown in FIG. 2, the reducing flame burner 20a is attached to the frame of the roller 15a, and the reducing flame burner 20b is attached to the carriage 12 via a fixed stand 21. A reducing flame gas is blown toward the processed surfaces 1a and 2a of the preceding rolled material 1 and the succeeding rolled material 2 so as to always keep the cutting surface in a reduced state. With this configuration, it is possible to keep the processed surfaces 1a and 2a in a reduced state during the cutting process by the processing apparatus 18 and the press-contacting process by the press-contacting apparatus 22, to prevent the oxidation, and to ensure high bonding strength.
[0021]
3 is a partial plan view taken along line AA in FIG. As shown in this figure, the rolled material joining apparatus of the present invention is further provided on the carriage 12 so as to be laterally movable (in the vertical direction in FIG. 3), and the processing device 18 and the tip clamping device 16 are mounted thereon. A horizontal slide base 26 and a side shift device 28 that is arranged in parallel at a predetermined stop position (for example, a standby position) of the carriage 12 and that moves the horizontal slide base 26 laterally thereon are provided.
[0022]
The carriage 12 and the side shift device 28 have a slide guide 29 that is aligned laterally at the stop position. The slide guide 29 includes, for example, a rail 29a and a guide 29b (FIG. 2). Further, the side shift device 28 includes an engagement fitting 28a that engages the lateral slide base 26 so as to be movable in the lateral direction at the stop position, and a linear cylinder 28b that moves the engagement fitting 28a in the lateral direction. Reference numeral 28c denotes a fixed base for the side shift device.
[0023]
With the above-described configuration, the side slide device 28 is moved laterally by the side shift device 28 at a predetermined stop position, moved onto the side shift device (fixed table 28c), and can be operated at a position away from the rolling line. . Therefore, it is easy to access each part of the device, and the workability is good. The cutter tip can be replaced and the maintenance and inspection work of the cutter part can be performed in a short time to improve productivity and labor saving. Can do.
[0024]
FIG. 4 is an operation explanatory view of the rolled material joining apparatus according to the present invention. In FIG. 4A, the carriage 12 is traveling in the rolling direction in synchronization with the rolling speed, the rear end portion of the preceding rolled material 1 is horizontally held by the rear end clamp device 14, and the rear end clamp device 16 follows. The tip of the rolled material 2 is also horizontally held. The rear end portion of the preceding rolled material 1 and the front end portion of the subsequent rolled material 2 are in positions where the joining portions overlap vertically, and the rear end portion of the preceding rolled material 1 is at the processing height H by the rear end clamping device 14. The processing device 18 and the pressure welding device 22 are in a standby state, and the lower surface of the upper die 23 a is in contact with the upper surface of the rear end portion of the preceding rolled material 1, and the lower surface of the lower die 23 b is in contact with the lower surface of the leading end portion of the subsequent rolled material 2.
[0025]
Next, as shown in FIG. 4B, the cutter 19a is swung by the processing device 18 to adjust the processing height, and the cutter 19a is moved back and forth in the rolling direction (left and right in the figure) to advance the preceding rolled material 1. The lower surface of the rear end and the upper surface of the front end of the subsequent rolled material 2 are cut. During processing, the processed surface is held in a reduced state by the reduction holding device 20.
[0026]
Next, as shown in FIG. 4 (C), the cutter 19a is returned to the standby position, and the rear end portion of the preceding rolled material 1 is lowered to the press-contact height L by the rear end clamp device 14, and at the same time, the front end is pressed by the press-contact device 22. The processed surfaces of the rolled material 1 and the subsequent rolled material 2 are overlapped and compressed to approximately the same thickness as the rolled material to complete the joining. Even during the press contact, the processed surface is held in the reduced state by the reduction holding device 20.
[0027]
Next, the rear end clamp device 14, the front end clamp device 16, and the press contact device 22 are opened, and the carriage 12 moves backward to return to the standby position. The aforementioned side shift device 28 is arranged in parallel at the carriage return position. At this position, the side slide device 26 is moved laterally by the side shift device 28 and moved onto the side shift device, leaving the rolling line. By working in a different position, productivity can be improved and labor can be saved.
[0028]
With this joining process, it is possible to join the preceding rolled material and the succeeding rolled material while continuously supplying the rolled material to the finishing mill, and the rolling material can be cut in two steps: cutting by the processing device and pressure welding by the pressure welding device. Since the entire width can be joined, the joining time can be greatly shortened, and the overall length of the rolling equipment can be shortened. In addition, it can prevent and collect chips, and (1) there is no reduction in joining strength or damage to the rolled material due to pressing, joining or rolling, and (2) prevents damage to the sliding part of the drive unit. Maintenance can be reduced and (3) it can contribute to the improvement of the device environment.
[0029]
Of course, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
[0030]
【The invention's effect】
As described above, the rolled material joining apparatus of the present invention can join the rear end of the preceding rolled material and the leading end of the subsequent rolled material while traveling together with the rolled material, and the entire width of the rolled material in a short time. Can be joined with sufficient joining strength, and the joined portion can be rolled almost uniformly with less unevenness of the joined portion, whereby the rolled material can be continuously supplied to the finishing mill. Furthermore, the rolled material joining apparatus of the present invention has excellent effects such as that parts can be replaced and maintenance and inspection work for each part of the apparatus can be performed with good workability and easy access.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a rolled material joining apparatus according to the present invention.
FIG. 2 is a configuration diagram of a main part of FIG. 1;
FIG. 3 is a partial plan view taken along line AA in FIG. 2;
FIG. 4 is an operation explanatory diagram of a rolling material joining step according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pre-rolled material 1a Cutting surface 2 Subsequent rolled material 2a Processing surface 3 Rail 4 Roller 10 Rolled material joining apparatus 12 Carriage 14 Rear end clamp apparatus 15a Roller 15b Clamp 15c Lifting cylinder 16 Front end clamp apparatus 17a Roller 17b Clamp 18 Processing apparatus 19a Cutter 19b Oscillator 19c Returning device 19d Oscillating arm 19e Returning table 19f Oscillating cylinder 19g Returning cylinder 20 Reduction holding device 22 Pressing device 23a Upper die 23b Lower die 23c Press device 23e Ram 26 Side slide base 28 Side shift Device 28a Engagement bracket 28b Linear motion cylinder 29 Slide guide 29a Rail 29b Guide H Processing height L Pressure height B Rolling height

Claims (2)

A carriage that travels in the rolling direction, a rear end clamping device that can move up and down by horizontally holding a rear end portion of the preceding rolling material attached on the carriage, and a leading end of the subsequent rolling material attached on the carriage A front end clamping device for horizontally holding the part, a processing device for cutting the rear end lower surface of the preceding rolled material and the upper end surface of the subsequent rolled material, a reduction holding device for holding the processed surface in a reduced state, A pressure welding device that overlaps the processed surfaces of the rolled material and the subsequent rolled material and compresses and joins the rolled material to approximately the same thickness as the rolled material,
The processing apparatus includes a cylindrical cutter that rotates about an axis in the width direction of the rolled material, a rocking device that rocks the cutter in an oblique direction, and a backward movement device that moves the cutter back and forth in the rolling direction, Consists of
Furthermore, a lateral slide base provided on the carriage so as to be laterally movable, on which the processing device and the tip clamp device are attached,
A rolling material joining apparatus, comprising: a side shift device that is arranged in parallel at a predetermined stop position of the carriage, and on which the lateral slide table is moved laterally. The carriage and the side shift device have a slide guide that is aligned in the lateral direction at a predetermined stop position, and the side shift device is an engagement fitting that engages the lateral slide table so as to be movable in the lateral direction at the stop position. And a linear motion cylinder for moving the engagement fitting in a lateral direction.

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