JPH09103809A - Joining device for rolled stock, with cutter replacing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely and in a short time replace a cutter by releasing a clamp device after transferring the cutter to be replaced to the position of a cutter supporting device and supporting it. SOLUTION: By stopping a truck 12 in the position of the rails 34 of a truck 33 for replacing, by moving a cutter arm 44 by oscillating device and reciprocating device, by moving the truck 33 for replacing, clamp devices 36 are made to come to both end positions of a cutter 19a. After holding both ends of the cutter 19a by the clamp devices 36, by moving a supporting shaft by the operation of a hydraulic device to detach from the cutter 19a, and by moving the truck 33 for replacing, the cutter 19a can be removed. Next, when holding a new cutter 19a on the clamp devices 36 of the truck 33 for replacing, and when stopping by a stopper 34a, the cutter 19a comes to a mounting position. By fitting the supporting shaft and the cutter 19a by the operation of a hydraulic cylinder, by releasing the clamp devices 36, and by drawing out the truck 33 for replacing, the replacing operation of the cutter 19a is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for joining a trailing end of a preceding rolled material and a trailing end of a following rolled material while traveling with the rolled material in a hot rolling facility,
In particular, the present invention relates to a rolled material joining device having a cutter exchange device capable of exchanging a cylindrical cutter for removing the scale on the surface to be pressure-welded.

[0002]

2. Description of the Related Art In a conventional hot rolling facility, a slab supplied from a heating furnace is rolled by a rough rolling mill and a finish rolling mill to obtain a strip material having a desired plate thickness. However, in such a method, rolling work is performed for each slab unit, and therefore continuous rolling work has been demanded. In addition, when rolling in slab units like this, defects are likely to occur at the ends (front end and rear end) of the rolled material, the yield of the rolled material is reduced, and the rolling speed is high due to biting or slippage. There was a problem that was difficult to realize. Therefore, a joining device has been proposed in which the rear end of the rolled material rolled by the rough rolling mill and the front end of the next rolled material are joined and supplied to the finish rolling mill.

[0003]

Problems to be Solved by the Invention JP-A-63-9340
No. 8 “Bar joining equipment” proposes equipment for forming a loop on a rolled material and press-contacting the rear end and the front end. In the case of pressure welding, it is necessary to remove the oxide film (scale) on the surface to be pressure-welded and to perform pressure welding so as not to oxidize again. A cutter is used to remove this scale, but damage is likely to occur due to contact with the hot rolled material, and the cutter must be frequently replaced for new or rework. Further, since the replacement work needs to be performed reliably in a short time, automation is required. The above-mentioned document does not describe a device for exchanging such a cutter, and therefore, there has been a demand for a device capable of reliably exchanging the cutter in a short time in a device for pressure-welding a rolled material.

The present invention has been made to solve the above-mentioned problems. That is, according to the present invention, 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 rolled material can be joined with sufficient joining strength in a short time. Another object of the present invention is to provide a rolled material joining device equipped with a device that can reliably replace a cutter used for removing scale of rolled material in a short time.

[0005]

In order to achieve the above-mentioned object, the invention of claim 1 horizontally clamps a truck running in the rolling direction and a trailing end of a rolled material which is mounted on the truck and precedes. And a rear-end clamp device that can move up and down, a front-end clamp device that is mounted on the trolley and horizontally holds the front end of the trailing rolled material, a lower surface of the trailing end of the preceding rolled material, and the tip of the trailing rolled material. A processing device for cutting the upper surface of the part with a cylindrical cutter, and a reduction holding device for holding the processing surface in a reduced state,
A pressure welding device that superimposes the processed surfaces of the preceding rolled material and the following rolled material, and compresses them to approximately the same thickness as the rolled material by an upper die that contacts the upper surface of the preceding rolled material and a lower die that contacts the lower surface of the trailing rolled material. A cutter exchange device for exchanging the cylindrical cutter, the processing device has a cutter support device for detachably supporting the cutter, and the cutter exchange device moves in the width direction of the rolled material. It has an exchange cart, an arm that is provided on the exchange cart and extends in the moving direction, and a clamp device that is provided at the tip of the arm and holds the cutter.

With the above structure, the bogie runs in the rolling direction with the trailing edge clamping device and the leading edge clamping device sandwiching the preceding rolled material and the trailing rolled material, so that the rolled material is continuously supplied to the finish rolling mill. it can. Further, the joint surface is cut by the processing device and pressed by the rolling device. Since the cutting process and the pressure contact can be performed continuously by this, the pressure contact can be performed in a short time and the high speed pressure contact can be performed. At this time, since the machined surface is brought into a reduced state by the reduction holding device and pressure is applied, no oxide scale is generated and sufficient bonding strength is obtained. Also, after stopping the dolly at the position of the replacement dolly and moving the replacement dolly so that the clamp device at the tip of the arm comes to the position of the cutter,
Hold the cutter with the clamp device. Then, the cutter can be removed from the cutter supporting device by the cutter supporting device, and the exchanging carriage can be moved to take out the cutter to a predetermined exchanging place. Also, the cutter can be attached by gripping the cutter to be replaced with the clamp device, moving the replacement carriage to the position of the cutter support device, supporting the cutter with the cutter support device, and then opening the clamp device.

According to a second aspect of the present invention, the cutter supporting device is provided at both ends of the cutter, and has a conical or frustoconical tip, and the conical or frustoconical recessed portions at both ends of the cutter. A support shaft to be fitted, a cylindrical body that can transmit rotation of the support shaft and is slidable in the axial direction, and a support shaft moving device that is provided at one end of the cylindrical body and that slides the support shaft in the axial direction. A bearing portion that rotatably supports the cylindrical body, and a rotation transmission device that transmits rotation to the cylindrical body.

Both ends of the cutter are supported by fitting support shafts having conical or frustoconical tips. The support shaft rotates together with the rotation of the cylindrical body to rotate the cutter. The cutter held by the clamp device is separated by moving the support shaft away from the cutter by the support shaft moving device. Also, when installing a new cutter, keep the support shaft away from the cutter by the support shaft moving device, transport the new cutter to the cutter installation position with the replacement cart, and use the support shaft moving device to cut the support shaft. It is done by inserting into both ends and fitting.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In each drawing, the same reference sign indicates the same meaning. FIG. 1 is a side view showing the configuration of the embodiment. FIG. 2 is a sectional view taken along line XX of FIG. In FIG. 1, the present rolling material joining device 10 includes a trolley 12 that travels in the rolling direction, and a rolled material 1 that is mounted on the trolley 12 and that precedes the rolling material 1.
A rear end pinch roller 14 used as a rear end clamp device capable of vertically moving by vertically sandwiching the rear end portion, and a carriage 12
A tip pinch roller 16 used as a tip clamping device that is mounted on the top of the trailing rolled material 2 and horizontally clamps the trailing edge of the trailing rolled material 2. Processing device 1 for processing with the blade-shaped cutter 19a
8 and a reduction holding device 20 for holding the processing surface in a reduction state
A pressure welding device 22 for superposing the processed surfaces of the preceding rolled material 1 and the following rolled material 2 and compressing and joining them to a thickness almost the same as the rolled materials 1 and 2, and a cutter exchanging device 32 shown in FIG. There is.

The elevating cylinder 14a mounted on the side surface of the frame 24 of the press-contacting device 22 has a working height H at which the rear end lower surface of the preceding rolled material 1 contacts the upper surface of the cutter 19a and the rear end portion of the preceding rolled material 1. The trailing edge pinch roller 1 is provided between the leading end portion of the trailing rolled material 2 and the press contact height L that is maintained at substantially the same height.
Move 4 up and down. The rear end pinch roller 14 is composed of upper and lower two-stage rollers, and the upper stage roller is moved up and down by a driving device (not shown). When the upper roller descends, it horizontally clamps the rear end of the preceding rolled material 1, while when it ascends, the lower roller serves as a guide roller for the rolled material. With this configuration, the trailing end portion of the preceding rolled material 1 is horizontally clamped by the trailing end pinch roller 14, the preceding rolled material 1 is held at the processing height H by the elevating cylinder 14a, and the cutter 19a holds the preceding rolled material 1 in place. The lower surface of the trailing end portion and the upper surface of the leading end portion of the trailing rolled material 2 can be cut, and then held at the pressure contact height L so that the worked surfaces of the preceding rolled material 1 and the trailing rolled material 2 are superposed and pressed together. It can be compressed and joined by the device 22.

The front end pinch roller 16 has the same structure as the rear end pinch roller 14, and the upper roll is lowered by a device (not shown) to horizontally pinch the front end portion of the trailing rolled material 2 and when it is raised, the lower roll pinch roller 16 is used. Serves as a guide roller for rolled material. A guide roller 15 is provided in a stepwise manner in front of the rear end pinch roller 14 so that the rolled material 1 has a gentle curve. The displacement roller 15a moves up and down in response to the vertical movement of the rear end pinch roller 14,
When the pressure contact height L becomes, the rolled material 1 is displaced so as to be horizontal. Guide rollers 17 are provided before and after the tip pinch roller 16 so that the rolled material 2 has a gentle curve.

The processing device 18 includes a cylindrical cutter 19a which rotates about the axial center of the rolled material 1 and 2 in the width direction, and an oscillating device 19b which oscillates the cutter 19a in an oblique direction.
It comprises a reciprocating device 19c for inclining and moving the cutter 19a in the rolling direction. The cutter 19a is the swing device 1
It is attached to the arm tip of 9b and is rotated by a rotation drive device (not shown). The cutter 19a cuts the lower surface of the trailing end portion of the preceding rolled material 1 and the upper surface of the trailing rolled material 2 at the processing position shown by the solid line in FIG. 1 by the swinging device 19b and the reciprocating device 19c. The arm is retracted to the position indicated by the alternate long and short dash line.

The reducing and holding device 20 is a coke oven gas, L
Composed of reducing flame burners 20a, 20b that burn a combustible gas such as PG or LNG with less oxygen than the amount that completely burns it to generate a reducing flame and blow it against the work surface to prevent oxidation.
The reducing flame burner 20a is attached to the trailing end pinch roll 14, and the reducing flame burner 20b is attached to the trolley 12 via a supporting material (not shown), and blows a reducing gas toward the processed surfaces of the preceding rolled material 1 and the following rolled material 2. The cutting surface is always kept in a reduced state.

A plurality of pressure welding devices 22 (three in this case)
The hydraulic cylinder 23 of is used. The hydraulic cylinder 23 is supported by a frame 24, and the frame 24 is supported by a plurality of columns 25 (two at each end in this case), and the lower part of the column 25 is fixed to the carriage 12. At the rod tip of the hydraulic cylinder 23, the upper mold device 26
The hydraulic cylinder 2 is fixed below the upper mold device 26.
A lower mold device 27 that supports the compressive load from 3 is fixed to the carriage 12. The upper die device 2 is driven by the hydraulic cylinder 23.
By pressing down 6, the upper surface of the preceding rolled material 1 and the lower surface of the following rolled material 2 are pressed, and they are pressed into contact with the rolled materials 1 and 2 to have substantially the same thickness.

The carriage 12 has a plurality of wheels 13 and travels on a rail 3 extending in the rolling direction. B is the rolling height of the rolling apparatus, and the plurality of rollers 4 support the rolled material at the rolling height B and move it in the rolling direction. The rail 3 is disposed at a position straddling the roller 4, and the press contact height L is higher than the rolling height B so that the bogie 12 can travel at a position higher than the rail 3. Vertically swingable tilt guides 28 and 30 for guiding the rolled materials 1 and 2 from the rolling height B of the rolling device to the front pinch roller 16 and from the rear end pinch roller 14 to the rolling height B are provided. , Each hydraulic cylinder 2
It swings at 9, 31. As a result, the existing rolling mill can be operated as it is.

FIG. 2 shows a cutter changing device. Trolley 12
The cutter exchanging device 32 is provided at an appropriate position where maintenance work is performed within the traveling range of, and the rail 34 of the exchanging truck 33 is laid in a direction perpendicular to the rail 3 of the truck 12. The exchanging carriage 33 travels on the rail 34 by a traveling device (not shown) and accurately stops at a predetermined position. An arm 35 is horizontally provided in the direction of the rail 34 on the exchanging carriage 33, and a clamp device 36 for grasping both ends of the cutter 19a according to the width of the cutter 19a is provided at a tip end portion thereof. As for the length of the arm 35, the trolley 33 for replacement is the rail 34.
Clamp device 36 at the position stopped by stopper 34a
Can be adjusted so as to grip both ends of the cutter 19a.

FIG. 3 shows a swinging device 19b of the cutter 19a,
The detailed structure of the reciprocating device 19c and the clamp device 36 are shown. The oscillating device 19b includes an inclined plate 41 that is inclined in the traveling direction of the rolled materials 1 and 2, and a sliding plate 4 that slides on the inclined plate 41.
2, an arm rotating shaft 43 rotatably supported on the sliding plate 42 with the axial direction being the plate width direction of the rolled material, a root fixed to the arm rotating shaft 43, and a cutter 19a supported at the tip. Cutter arm 44 provided with a cutter support device 37
And a hydraulic cylinder 45 that swings the cutter arm 44. The reciprocating device 19c reciprocates the sliding plate 42 in the traveling directions of the rolled materials 1 and 2 and with an inclination.

In FIG. 2, the cutter rotation motor 46 is fixed to the carriage 12 and the bearing 4 provided on the sliding plate 42.
7 is connected by a universal joint 48, and a belt (for example, a timing belt) 49 is driven to rotate the cutter support device 37. With this configuration, the sliding plate 42
Even when reciprocating, the rotation from the cutter rotation motor 46 can be transmitted to the cutter support device 37.

In FIG. 3, the clamp device 36 is provided at the tip of the arm 35 and comprises a gripping arm 36a for gripping the cutter 19a and a hydraulic cylinder 36b for opening / closing the gripping arm 36a. When the cutter 19a is gripped by the clamp device 36, and is detached and attached, the cutter 19a is moved in the axial direction, but at this time, the cutter arm 44 is rotated to prevent the cutter support device 37 and the cutter 19a from interfering with each other. To do so. Note that the cutter arm 44 does not have to be rotated if the clamp device 36 can be moved up and down with respect to the arm 35.

FIG. 4 is a sectional view of the cutter support device 37. The support shaft 51 has a frustoconical head, and the cutter 1
It fits into a frustoconical recess provided at the end of 9a, and the shaft fits slidably in the axial direction with the inner surface of the cylindrical body 52. A key is provided on the fitting portion of the head to transmit the rotation to the cutter 19a. Further, the shaft portion is joined to the inner surface of the cylindrical body 52 with a sliding key to transmit rotation and allow sliding in the axial direction. A hydraulic cylinder 53 is provided as a support shaft moving device on the non-cutter 19a side of the cylindrical body 52, and its rod penetrates the inside of the cylindrical body 52 and is fixed to the support shaft 51. The head portion of the support shaft 51 and the cutter 19a are slidably attached and detached. The hydraulic cylinder 53
Rotates with the cylindrical body 52, and is connected to the hydraulic pipe by a rotary joint (not shown). A belt wheel 54 is provided as a rotation transmission device at one end of the cylindrical body 52.
The timing belt 49 rotates the cylindrical body 52, and the support shaft 51 rotates the cutter 19a. Cylindrical body 52
The other end of is supported by a bearing 55, and the bearing 55 is attached to the tip of the cutter arm 44. With such a configuration, the cutter 19a and the support shaft 51 of the cutter support device 37 can be attached / detached by operating the hydraulic cylinder 53 with both ends of the cutter 19a being held by the clamp device 36.

Next, the cutter replacement work will be described. The cutter replacement is performed when the joining work by the rolled material joining device 10 is not performed. In this case, in FIG. 1, the tilt guides 28 and 30 are brought close to horizontal and the rolled material is run at the rolling height B, so that the cutter replacement work can be performed even during the normal rolling work. First, the carriage 12 is stopped at the rail 34 position of the replacement carriage 33. Since this position is a fixed position, it is easily possible by incorporating it in the traveling control device of the carriage 12 by a program in advance. Next, the cutter arm 44 is moved to the position shown by the alternate long and short dash line in FIG. 3 by the swinging device 19b and the reciprocating device 19c. In this state, the exchanging carriage 33 is moved so that the clamp device 36 comes to both end positions of the cutter 19a as shown in FIG. At this position, the stopper 34 of the rail 34
The replacement carriage 33 may hit a. Next, after grasping both ends of the cutter 19a with the clamp device 36,
The hydraulic cylinder 53 is operated to move the support shaft 51 in the axial direction to separate the support shaft 51 from the cutter 19a.
4 is rotated so that the cutter 19a can be pulled out, and then the replacement carriage 33 is moved to move the cutter 1a.
9a can be removed.

In this state, a new cutter 19a is attached. With the new cutter 19a held by the clamp device 36 of the replacement carriage 33, if the replacement carriage 33 is moved and stopped by the stopper 34a, the cutter 19a comes to the mounting position. After rotating the cutter arm 44 to align the support shaft 51 and the cutter 19a with each other, the hydraulic cylinder 53 is operated to fit the support shaft 51 and the cutter 19a. Next, the clamp device 36 is opened, and the replacement carriage 33
And the cutter 19a replacement work is completed.

Clamp device 36, cutter support device 37
Can be operated remotely and can be easily automated. Further, since the operation of the exchanging carriage 33 can be automated, the cutter exchanging work can be automated. As a result, the cutter can be reliably and quickly replaced.

[0024]

As is clear from the above description, the equipment of the present invention is capable of performing high-speed pressure welding by continuously processing and compressing the pressure-bonded surface, and sufficient bonding strength by pressure-bonding the processed surface in a reduced state. , And a stable bonding strength can be obtained by compressing the overlapping surface to a thickness almost the same as that of the rolled material to make a substantially uniform thickness. Furthermore, since the cutter replacement device for removing the scale is provided off-line, the cutter can be replaced reliably and quickly. Moreover, even during the cutter replacement work, the conventional rolling work in which the rolled materials are not joined can be performed.

[Brief description of the drawings]

FIG. 1 is a side view showing a configuration of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a diagram showing configurations of an oscillating device, a reciprocating device, and a clamping device.

FIG. 4 is a diagram showing a configuration of a cutter support device.

[Explanation of symbols]

 1, 2 Rolled material 3 Rail 4 Roller 12 Cart 13 Wheel 14 Rear end pinch roller (rear end clamp device) 14a Elevating cylinder 15, 17 Guide roller 15a Displacement roller 16 Tip pinch roller (tip clamp device) 18 Processing device 19a Cutter 19b Swinging device 19c Reciprocating device 20 Reduction holding device 20a, 20b Reduction flame burner 22 Pressure welding device 23 Hydraulic cylinder 24 Frame 25 Strut 26 Upper mold device 27 Lower mold device 28, 30 Inclined guide 29, 31 Hydraulic cylinder 32 Cutter replacement Device 33 Replacement dolly 34 Rail 35 Arm 36 Clamping device 37 Cutter support device 41 Inclined plate 42 Sliding plate 43 Arm rotation shaft 44 Cutter arm 45 Hydraulic cylinder 46 Cutter rotation motor 47 Bearing 48 Universal joint 49 Belt 51 supporting shaft 52 cylinder 53 hydraulic cylinder 54 pulley 55 bearing H working height L pressure height B rolling height

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Nobuhiro Tasoe, No. 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Inside the Yokohama Engineering Center, Ishikawajima-Harima Heavy Industries Co., Ltd. (72) Inventor Masami Oki, 4 Kitahama, Chuo-ku, Osaka Sumitomo Metal Industry Co., Ltd. (72) Inventor Koichi Sakamoto 4-5-33 Kitahama, Chuo-ku, Osaka City

Claims (2)

[Claims] 1. A trolley that travels in the rolling direction, a rear end clamp device that is mounted on the trolley and that vertically clamps the rear end of the preceding rolled material horizontally, and a rear clamp that is mounted on the trolley. A tip clamping device that horizontally clamps the tip of the rolled material to be carried out, a processing device that cuts the lower surface of the trailing end of the preceding rolled material and the upper surface of the leading end of the trailing rolled material with a cylindrical cutter, and the processing surface Rolling is performed by the reduction holding device that holds the reduced state, the machined surfaces of the preceding rolled material and the trailing rolled material, and the upper die that contacts the upper surface of the preceding rolled material and the lower die that contacts the lower surface of the trailing rolled material. A press contact device for compressing the material to a thickness substantially the same as that of the material, and a cutter exchanging device for exchanging the cylindrical cutter, and the processing device has a cutter supporting device for detachably supporting the cutter, and the cutter exchanging device. The device moves across the width of the rolled material. Roller having a cutter exchanging device, characterized in that the excavator has an exchanging trolley, an arm provided on the exchanging trolley and extending in the moving direction, and a clamp device provided at a tip end of the arm for gripping the cutter. Material joining device. 2. The support shaft of the cutter support device is provided at both ends of the cutter, and has a conical or frustoconical tip and is fitted into a conical or frustoconical recess at both ends of the cutter. A cylindrical body that supports the support shaft so as to be rotatable and slidable in the axial direction; a support shaft moving device that is provided at one end of the cylindrical body and that slides the support shaft in the axial direction; A rolling material joining device having a cutter changing device according to claim 1, further comprising: a bearing portion that rotatably supports the rotating body, and a rotation transmitting device that transmits rotation to the cylindrical body.