JP3682790B2 - Positioning method and apparatus for running joint device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a running joining device 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, and more specifically, positioning of the running joining device. The present invention relates to a method and an apparatus.
[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 problems, the inventors of the present invention have traveled the carriage while holding the preceding rolled material and the subsequent rolled material, and held the ends of the preceding rolled material and the succeeding rolled material in a reduced state. We created and filed a running joint device that cuts the joint surface and presses the processed surfaces together (Japanese Patent Application No. 6-255176, Japanese Patent Application No. 7-55488, etc.) .
[0004]
[Problems to be solved by the invention]
In the above-described running joint device, it is necessary to accurately position the overlap of the rolled material and the position of the carriage with respect to the rolled material. That is, since the rear end portion of the preceding rolled material and the front end portion of the subsequent rolled material are overlapped and pressed together, the size of the rolling material stacking margin is important, and if it is too large, the required compression force of the pressure welding device becomes excessive. If it is too small, the bonding strength may be insufficient. Therefore, it is necessary to position the rolling material stacking margin within an optimum range (for example, about 20 mm ± 5 mm).
[0005]
Moreover, even if the stacking allowance of the rolled material is accurately positioned, sufficient bonding strength cannot be obtained unless the press contact portions (upper and lower molds) of the press contact apparatus can be accurately positioned on the overlap portion. Therefore, it is necessary to accurately position the carriage relative to the rolled material (for example, about ± 5 mm).
However, in the running joint apparatus, it is necessary to perform the above-described positioning while moving (running) each of the preceding rolled material, the subsequent rolled material, and the carriage with separate drive devices, and conventionally, such a positioning method has been established. Was not.
[0006]
The present invention has been developed to solve the above-described problems. That is, an object of the present invention is to provide a positioning method for a running joining device capable of accurately positioning the overlap margin between the preceding rolled material and the following rolled material and the running joining device (that is, the carriage) with respect to the overlapped portion. And providing an apparatus.
[0007]
[Means for Solving the Problems]
According to the present invention, the running joining device capable of traveling in the rolling direction, the position detecting device for detecting the position of the running joining device, the end face detector for detecting the end face of the rolled material, and the speed of the preceding rolled material And a trailing speed detector for detecting the speed of the subsequent rolled material, (a) a trailing end of the preceding rolled material is detected by the end face detector, and from the time of the detection The elapsed time is set as a reference time, (b) the rear end position of the preceding rolled material is calculated from the speed and the reference time of the preceding rolled material by the preceding speed detector, and (c) the speed of the running joint device is adjusted, The running device is positioned with respect to the preceding rolled material by the detection device, (d) the end of the subsequent rolled material is detected by the end face detector, the elapsed time from the detection is used as the reference time, and (e) The tip position of the following rolled material is calculated from the speed and reference time of the following rolled material by the line speed detector. And, by adjusting the speed of the trailing rolled material at the same time, to position the succeeding rolled material with respect to the preceding rolling material and the inter-running bonding apparatus, the positioning method of the-fly junction and wherein the is provided.
[0008]
According to this method, the position where the end face detector is installed is set as a reference position, the elapsed time (reference time) from the time when the trailing end of the preceding rolled material passes the reference position, and the leading end of the subsequent rolled material is set as a reference. From the elapsed time (reference time) after the passage of the position, the rear end position of the preceding rolled material and the front end position of the subsequent rolled material can always be accurately calculated. Therefore, the speed of the running joining device is adjusted, the running joining device is positioned with respect to the preceding rolled material, the speed of the succeeding rolled material is adjusted, and the succeeding rolled material is joined to the preceding rolled material by running joining. By positioning with respect to the apparatus, it is possible to accurately position the overlap margin of the preceding rolled material and the subsequent rolled material and the running joining device (that is, the carriage) with respect to the overlapped portion.
[0009]
Further, according to a preferred embodiment of the present invention, the running device includes a cart that travels in the rolling direction, a rear end clamping device that is mounted on the cart and sandwiches a rear end portion of a preceding rolled material, and the cart. A tip clamping device that is mounted on the top and clamps the tip of the subsequent rolled material, a processing device that cuts the lower surface of the rear end of the preceding rolled material and the upper surface of the tip of the subsequent rolled material, and a reduced state of the processed surface A reduction holding device, and a pressure welding device that presses the processed surfaces of the preceding rolled material and the subsequent rolled material on each other, and after positioning the running joint device with respect to the preceding rolled material, by a rear end clamping device The rear end portion of the preceding rolled material is clamped, and after positioning of the subsequent rolled material with respect to the preceding rolled material and the running joining device, the front end portion of the subsequent rolled material is clamped by the front end clamping device.
[0010]
With this configuration, after rolling of the preceding rolled material and the subsequent rolled material and the positioning of the running joint device (ie, the carriage) with respect to the overlapped portion is completed, each rolled material is fixed to the running joint device by the clamping device. It is possible to prevent the positional deviation thereafter, and the rear end of the preceding rolled material and the front end of the subsequent rolled material can be joined with high accuracy.
[0011]
Further, according to the present invention, the position detection device that detects the position of the running joint device that can travel in the rolling direction, the end surface detector that is installed at the reference position and detects the end surface of the rolled material, and the speed of the preceding rolled material A preceding speed detector for detecting the following, a trailing speed detector for detecting the speed of the subsequent rolled material, and a control device for controlling the traveling speed of the inter-running apparatus and the feeding speed of the subsequent rolled material, With this control device, (a) the elapsed time from the detection of the trailing edge of the preceding rolled material by the end face detector is used as a reference time, and (b) the speed of the preceding rolled material and the reference time by the preceding speed detector are The rear end position is calculated, (c) the speed of the running joining device is adjusted, the running joining device is positioned with respect to the preceding rolled material, and (d) when the leading edge of the subsequent rolled material is detected by the end face detector. Elapsed time from the reference time, (e) trailing pressure by trailing velocity detector Calculate the tip position of the subsequent rolled material from the material speed and the reference time, and simultaneously adjust the speed of the subsequent rolled material to position the subsequent rolled material with respect to the preceding rolled material and the running joint device. There is provided a positioning device for a running joint device characterized by the above.
[0012]
According to this device, the position where the end face detector is installed is used as a reference position, and the control device always calculates the trailing edge position of the preceding rolled material and the leading edge position of the following rolled material from the reference time and the reference time. Adjusting the speed of the running joining device, positioning the running joining device with respect to the preceding rolled material, adjusting the speed of the following rolled material, By positioning with respect to a running joining apparatus, the overlap margin of a preceding rolling material and a subsequent rolling material, and the running joining apparatus (namely, cart) with respect to this superposition part can be positioned correctly.
[0013]
Also, according to a preferred embodiment of the present invention, the end face detector is a non-contact type optical sensor, and the leading speed detector and the trailing speed detector are in contact with the rolling material and rotate in a pinch roll. And a speed sensor for detecting the rotational speed of the pinch roll. With this configuration, end face detection and speed detection can be accurately performed with a simple configuration.
[0014]
The position detection device includes a pinion that meshes with a rack disposed along the rail and is coaxial with a wheel of the running joint device, and a speed sensor that detects a rotation speed of the pinion. With this configuration, it is possible to always detect the position of the inter-running joining device accurately.
[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 running joining apparatus (rolled material joining apparatus) to which the method and apparatus of the present invention are applied. In this figure, a running joint device 10 includes a carriage 12 that runs in the rolling direction, and a rear end clamping device 14 that can move up and down by horizontally holding the rear end portion of the rolling material 1 that is mounted on the carriage 12 and precedes. And a front end clamping device 16 that horizontally attaches the front end of the rolled material 2 that is mounted on the carriage 12, the lower surface of the rear end of the preceding rolled material 1, and the upper surface of the front end of the subsequent rolled material 2. The processing device 18 to perform, the reduction holding device 20 to hold the processing surface in a reduced state, and the processing surfaces of the preceding rolling material 1 and the subsequent rolling material 2 are overlapped and compressed to approximately the same thickness as the rolling materials 1 and 2. And a pressure welding device 22 for joining.
[0016]
Moreover, in FIG. 1, the trolley | bogie 12 has a some wheel, and this wheel drive | works the rail 3 extended in the rolling direction with the drive device which is not shown in figure. Further, the running joint device 10 in FIG. 1 guides the rolled materials 1 and 2 from the rolling height B of the rolling device to the leading end clamping device 16 and from the trailing end clamping device 14 to the rolling height B. , 25.
[0017]
In this figure, B is the rolling height of the rolling device, and a plurality of rollers 4 support the rolled material at the rolling height B and move it in the rolling direction. Moreover, the rail 3 is arrange | positioned in the position which straddles the roller 4, a press-contact height is made higher than rolling height B, and the trolley | bogie 12 can drive | work a rolling direction in a position higher than the rail 3. FIG. With this configuration, for example, the rolled material joining apparatus of the present invention can be installed in a state where an existing rolling facility is in operation. Note that the present invention is not limited to such a configuration, and the roller 4 may be moved up and down to avoid a collision between the roller 4 and the carriage 12, and the pressure contact height may be kept equal to the rolling height B.
[0018]
FIG. 2 is an overall configuration diagram of a positioning device for a running joint device according to the present invention, and FIG. 3 is a schematic diagram of FIG. As shown in FIG.2 and FIG.3, the running joining apparatus 10 shown in FIG. 1 is installed between the roughing mill 5 (rough rolling mill) and the finishing mill 6 (finishing rolling mill), and can run in the rolling direction. It is like that. Further, a winding / rewinding device 7, a leveler 8, a cutting machine 9, and the like are installed between the rough mill 5 and the running joint device 10 from the rough mill 5 side. In addition, this invention is not limited to this arrangement | positioning, For example, it can apply also when there is no winding rewinding device 7, the leveler 8, the cutting machine 9, etc.
[0019]
Hereinafter, the present invention will be described based on the schematic diagram of FIG. The positioning device for a running joining device according to the present invention includes a position detecting device 32 that detects the position of the running joining device 10 that can run in the rolling direction, and an end face detector that is installed at a reference position O and detects the end face of the rolled material. 34, a preceding speed detector 36 for detecting the speed of the preceding rolled material, a trailing speed detector 38 for detecting the speed of the following rolled material, the traveling speed of the inter-running apparatus and the feed speed of the following rolled material. And a control device 40 for controlling.
[0020]
In this embodiment, the end face detector 34 is a non-contact type optical sensor (for example, a laser sensor), and the preceding speed detector 36 is a pinch roll 36a that rotates in contact with the preceding rolled material 1 and the pinch roll 36a. The speed sensor 36b is a speed sensor 36b that detects the rotational speed, and the trailing speed detector 38 is a speed sensor 38b that detects the rotational speed of the pinch roll 38a that rotates in contact with the subsequent rolling material 2 and the pinch roll 38a. With this configuration, end face detection and speed detection can be accurately performed with a simple configuration. The end face detector 34 may be another type of non-contact type sensor, such as a magnetic sensor, a CCD camera, or the like, and the speed detectors 36 and 38 may be other known speed sensors such as a laser speedometer. Good.
[0021]
Further, in this embodiment, the position detection device 32 includes a pinion that meshes with a rack disposed along the rail and is coaxial with the wheel of the running joint device, and a speed sensor that detects the rotation speed of the pinion. . With this configuration, the position of the inter-running joining device 10 can always be accurately detected. The position detection device 32 may be another type of position detection means.
[0022]
In FIG. 3, the rolled materials 1 and 2 are fed from right to left, and the running joint device 10 is located on the left side from the reference position O in the standby state. Hereinafter, the distance from the reference position O is L, and the position of the inter-running joining device 10 at the standby position is ΔL. Moreover, since the succeeding rolled material 2 is sent downstream after the front end cutting by the cutting machine 9, the trailing end of the preceding rolled material and the subsequent rolling are performed when the trailing end of the preceding rolled material 1 passes the reference position O. There is always a gap between the tip of the material. Accordingly, there is a time delay until the leading edge of the subsequent rolled material 2 passes the reference position O, and this time delay is denoted by Δt.
[0023]
FIG. 4 is an explanatory view of a positioning method according to the present invention, and FIG. 5 is an operation explanatory view corresponding thereto. According to the method and apparatus of the present invention, the control device 40
(A) The elapsed time from the time of detecting the rear end of the preceding rolled material 1 by the end face detector 34 is defined as a reference time t,
(B) The rear end position of the preceding rolled material 1 is calculated from the speed of the preceding rolled material 1 by the preceding speed detector 36 and the reference time t,
(C) adjusting the speed of the running joining device 10 to position the running joining device 10 with respect to the preceding rolled material 1,
(D) The elapsed time from the time of detecting the tip of the succeeding rolled material 2 by the end face detector 34 is defined as a reference time t ′.
(E) The leading end position of the succeeding rolled material 2 is calculated from the speed of the succeeding rolled material 2 by the following speed detector 38 and the reference time t ′, and the speed of the succeeding rolled material 2 is adjusted at the same time. The subsequent rolled material 2 is positioned with respect to the material 1 and the running joining device 10.
[0024]
The horizontal axis in FIG. 4 indicates the standard time t and the reference time t ′, and the vertical axis indicates the distance L from the standard position O. In the above (a) and (b), since the speed of the preceding rolled material 1 is normally kept constant by the downstream finishing mill 6, the rear end position of the preceding rolled material 1 passes through the origin indicated by 1 in the figure. Displayed as a straight line. FIG. 5A shows the positional relationship when the reference time t is zero.
[0025]
Next, in the above (c), as shown by the broken line in FIG. 4, the running joining device 10 is run at a high speed, catches up with the preceding rolled material 1 (point a), and finely adjusts the speed, and the running joining device. The mold position of 10 and the rear end portion of the preceding rolled material 1 are accurately positioned. Immediately after this, it is preferable that the preceding rolled material 1 is fixed to the running joint device 10 by the preceding clamp device 14 to prevent subsequent positional deviation. FIG. 5C shows the positional relationship in this state. Alternatively, the running joining device 10 may be run immediately after the trailing end of the preceding rolled material 1 is detected, and the running joining device 10 may be positioned earlier by catching up with the preceding rolled material 1 earlier than in FIG.
[0026]
On the other hand, in (d) above, as shown by the solid line in FIG. 4, the end detector 34 detects the tip of the subsequent rolled material 2 (corresponding to FIG. 5 (B)), and then in (e), The following rolled material 2 is moved at high speed to catch up with the preceding rolled material 1 (point b), and the speed is finely adjusted so that the die position of the running joining device 10 and the leading end of the following rolled material 2 are accurately adjusted. Position to. Immediately after this, it is preferable to fix the subsequent rolled material 2 to the running joint device 10 by the subsequent clamp device 16 to prevent the subsequent displacement. FIG. 5D shows the positional relationship in this state. It should be noted that the speed adjustment of the running joining device 10 and the subsequent rolled material 2 is preferably performed by appropriately changing the speed so that the load on the driving device is small and the predetermined position is reached in a short time.
[0027]
Thereafter, while traveling by the running joint device 10, the rear end of the preceding rolled material 1 and the front end of the subsequent rolled material 2 are joined, and then the rear end clamping device 14, the front end clamping device 16, and the pressure welding device 22 are opened. Then, the carriage 12 moves backward and returns to the standby position.
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.
[0028]
【The invention's effect】
As described above, the positioning method and apparatus for the running joint device of the present invention accurately positions the overlap between the preceding rolled material and the following rolled material and the running joining device (that is, the carriage) with respect to the overlapped portion. It has the outstanding effect of being able to do.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a running joint apparatus to which a method and apparatus of the present invention are applied.
FIG. 2 is an overall configuration diagram of a positioning device for a running joint device according to the present invention.
FIG. 3 is a schematic diagram of FIG. 2;
FIG. 4 is an explanatory diagram of a positioning method according to the present invention.
FIG. 5 is a diagram illustrating the operation of the device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lead rolling material 2 Subsequent rolling material 3 Rail 4 Roller 5 Coarse mill 6 Finishing mill 7 Winding rewinding device 8 Leveler 9 Cutting machine 10 Running joint device 12 Carriage 14 Rear end clamp device 16 Front end clamp device 18 Processing device 20 Reduction holding device 21 Fixed stand 22 Pressure welding device 24, 25 Inclination guide 32 Position detection device 34 End face detector 36 Leading speed detector 38 Trailing speed detector 40 Controller B Rolling height O Reference position L Distance t from reference position Reference time t 'reference time

Claims (5)

A running joining device capable of traveling in the rolling direction, a position detecting device for detecting the position of the running joining device, an end face detector for detecting the end face of the rolled material, and a preceding speed detection for detecting the speed of the preceding rolled material And a trailing speed detector for detecting the speed of the trailing rolled material,
(A) The rear end of the preceding rolled material is detected by the end face detector, and the elapsed time from the detection is set as the reference time,
(B) calculating the trailing end position of the preceding rolled material from the speed and reference time of the preceding rolled material by the preceding speed detector;
(C) Adjust the speed of the running joining device, position the running joining device with respect to the preceding rolled material by the position detection device,
(D) The tip of the subsequent rolled material is detected by the end face detector, and the elapsed time from the detection is set as the reference time.
(E) The leading end position of the subsequent rolled material is calculated from the speed and reference time of the subsequent rolled material by the subsequent speed detector, and the speed of the subsequent rolled material is adjusted at the same time, so that the preceding rolled material and the running joint device The positioning method of the running joining apparatus characterized by positioning a subsequent rolling material with respect to. The running device includes a carriage that travels in a rolling direction, a rear end clamping device that is attached on the carriage and sandwiches a rear end portion of a preceding rolled material, and a front end portion of a subsequent rolled material that is attached on the carriage. A front end clamping device for clamping, 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, and the preceding rolled material, A pressure welding device that presses the processed surface of the subsequent rolled material on top of each other,
After positioning the running joint device with respect to the preceding rolled material, the rear end portion of the preceding rolled material is sandwiched by a rear end clamping device,
The positioning of the running joining device according to claim 1, wherein after the positioning of the subsequent rolled material with respect to the preceding rolled material and the running joining device, the leading end portion of the succeeding rolled material is sandwiched by the leading end clamping device. Method. A position detection device for detecting the position of a running joint device capable of traveling in the rolling direction, an end surface detector for detecting an end surface of the rolled material installed at a reference position, and a preceding speed detector for detecting the speed of the preceding rolled material A trailing speed detector for detecting the speed of the succeeding rolled material, and a control device for controlling the running speed of the running joint device and the feeding speed of the succeeding rolled material,
(A) The elapsed time from the detection of the trailing edge of the preceding rolled material by the edge detector is set as the reference time,
(B) calculating the trailing end position of the preceding rolled material from the speed and reference time of the preceding rolled material by the preceding speed detector;
(C) adjusting the speed of the running joining device to position the running joining device relative to the preceding rolled material;
(D) Elapsed time from the detection of the tip of the subsequent rolled material by the end face detector as a reference time,
(E) The leading end position of the subsequent rolled material is calculated from the speed and reference time of the subsequent rolled material by the subsequent speed detector, and the speed of the subsequent rolled material is adjusted at the same time, so that the preceding rolled material and the running joint device A positioning device for a running joint device, characterized in that a subsequent rolled material is positioned with respect to the workpiece. The end face detector is a non-contact type optical sensor, and the preceding speed detector and the following speed detector are a pinch roll that rotates in contact with a rolling material, and a speed sensor that detects a rotation speed of the pinch roll. The positioning device for a running joint device according to claim 3, wherein: The position detection device includes a pinion that meshes with a rack disposed along a rail and is coaxial with a wheel of a running joint device, and a speed sensor that detects a rotation speed of the pinion. Item 4. A positioning device for a running joint device according to Item 3.

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