JP3726109B2 - Rolling material joining device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rolled material joining apparatus that joins end portions of rolled material to each other.
[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 defects are easily generated at the front end portion and the rear end portion, thereby reducing the yield of the rolled material and increasing the rolling speed due to biting / butting off. There was a problem that was difficult to convert.
[0003]
In order to solve such a problem, a joining device for joining the rear end of the preceding rolled material and the front end of the subsequent rolled material has been proposed in the past in order to continuously supply the rolled material to the finishing mill (for example, JP-A-62-2252603, JP-A-63-93408, JP-B-5-139).
[0004]
However, in the conventional rolling material joining apparatus described above, (1) automation (mechanization) is difficult and the joint cannot be uniformly rolled. (2) It takes time to weld a wide rolled material. There are problems such as that the whole tends to be long, and (3) it is difficult to ensure sufficient bonding strength over the entire width of the rolled material.
[0005]
Accordingly, the inventors of the present invention created and filed a rolling material joining apparatus capable of joining with sufficient joining strength over the entire width of the rolled material in a short time (for example, Japanese Patent Application Laid-Open No. 8-10809).
[0006]
[Problems to be solved by the invention]
As shown in FIG. 5, a rolling material joining apparatus disclosed in Japanese Patent Laid-Open No. 8-10809 includes a lifting device 15 capable of moving up and down the rear end portion of the preceding rolling material 1 or the leading end portion of the subsequent rolling material 2, and the preceding rolling material. A cutting device 18 that simultaneously cuts the lower surface of the rear end portion 1 and the upper surface of the front end portion of the subsequent rolled material 2, and the cutting device 18 rotates about an axis X inclined with respect to the horizontal. The conical cutter 24 and a lateral movement device 26 that horizontally moves the conical cutter across the entire width of the rolled material from the position where the rolled material is removed. The conical cutter 24 has a pair of frustoconical surfaces 24a and 24b whose apexes face outward, and the uppermost and lowermost portions of the frustoconical surface are both substantially horizontal. The uppermost portion and the lowermost portion are in contact with the lower surface of the rear end portion and the upper surface of the tip portion at the same time.
[0007]
In this figure, 12 is a pedestal, 14 and 16 are clamping devices that overlap and horizontally hold the rear end of the preceding rolled material 1 and the front end of the subsequent rolled material 2, and 20 is a reduction of the work surface. The reduction holding device 22 that holds the state is a pressure welding device that presses the overlapped portion, where H is the processing height, and L is the pressure height.
[0008]
However, in the conventional rolling material joining apparatus described above, since the preceding rolled material 1 and the subsequent rolled material 2 are simultaneously cut with a single conical cutter 24, the distance between the two upper and lower rolled materials is accurately maintained. However, there is a problem that it is difficult to process the upper and lower plates uniformly. Further, there is a problem that an overload acts on the cutter when the cutting surface of the plate is deformed or the thickness of the rolled material is changed. Further, since the cutting directions with respect to the upper and lower plates are reversed, the cutting resistance and lateral movement resistance are unbalanced in the upper and lower directions, and there are problems that the cutting surface roughness is different and the running resistance of the cutter is increased.
[0009]
The present invention has been made to solve the various problems described above. That is, the main object of the present invention is to provide a rolled material joining apparatus capable of simultaneously cutting a preceding rolled material and a succeeding rolled material while bringing a cutter into uniform contact with upper and lower rolled materials. Another object of the present invention is to provide a rolled material joining apparatus capable of simultaneously cutting two rolled materials without causing an overload to the cutter even if the deformation or thickness of the cutting surface changes. is there. Furthermore, another object of the present invention is to make the cutting direction with respect to the upper and lower plates the same, thereby making the cutting resistance and lateral movement resistance equal in the vertical direction, making it easy to obtain a uniform cutting surface roughness, and running the cutter. It is providing the rolling-material joining apparatus which can make resistance small.
[0010]
[Means for Solving the Problems]
According to the present invention, there is provided a cutting device that simultaneously performs cutting while traveling in the width direction on 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 the cutting surfaces are overlapped and joined. In the rolling material joining apparatus, the cutting apparatus includes upper and lower cutters for cutting the lower surface of the rear end portion and the upper surface of the tip portion, a rotary drive device for rotating the upper and lower cutters, and a cutting surface for changing a cutting surface interval by the cutter. and adjusting device, Ri Tona, the cutting surface adjustment device includes a swingable cutter supporting member rotatably supporting the central one of the cutter axis to the upper and lower cutter, swing for swinging the cutter supporting member There is provided a rolled material joining device comprising a dynamic drive device .
[0012]
According to the configuration of the present invention, the cutting surface adjusting device can swing the cutter support member around the one cutter axis and bring the other cutter into contact with the cutting surface. Therefore, by controlling the position of one cutter axis and simultaneously controlling the position or pressure of the oscillating drive unit, both cutters can be controlled to the optimum position. Thus, the preceding rolled material and the subsequent rolled material can be cut simultaneously.
[0013]
In addition, since the cutting surface interval of the cutter can be changed (adjusted) by the cutting surface adjustment device, even if the deformation or thickness of the cutting surface changes, two rolled materials can be cut simultaneously without causing an excessive load on the cutter. it can.
[0014]
In addition, according to the present invention, a cutting device that performs cutting simultaneously while traveling in the width direction on 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 is provided, and the cutting surfaces are overlapped. In the rolled material joining apparatus to be joined, the cutting apparatus changes the upper and lower cutters for cutting the lower surface of the rear end portion and the upper surface of the tip portion, a rotational drive device for rotating the upper and lower cutters, and the cutting surface interval by the cutter. a cutting surface adjustment device, Tona is, the rotation driving device includes a characteristic and rotation drive device for rotating one of the upper and lower cutter, a power transmission mechanism for transmitting the rotation to the other of the cutter, in that it consists of A rolled material joining apparatus is provided. The power transmission mechanism preferably comprises a gear train. With this configuration, it is possible to rotate the upper and lower cutters in opposite directions at the same speed, thereby making the cutting direction with respect to the upper and lower plates the same, equalizing the cutting resistance and lateral movement resistance, and a uniform cutting surface Roughness can be easily obtained, and the running resistance of the cutter can be reduced.
[0015]
Further, the power transmission mechanism can be constituted by a timing belt and a pulley. In this configuration, the rotation directions of the upper and lower cutters are the same, but the configuration can be simplified and the size and weight can be reduced.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
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 a partial configuration diagram of a rolled material joining apparatus according to the present invention. As shown in this figure, in the rolling material joining apparatus of the present invention, the rear end portion lower surface 1a of the preceding rolled material 1 and the front end portion upper surface 2a of the subsequent rolled material 2 are arranged in the width direction (direction orthogonal to the paper surface in this figure). Is a device that includes a cutting device 18 that cuts simultaneously while traveling and overlaps and joins the cut surfaces 1a and 2a. Such a configuration is the same as that of the conventional rolled material joining apparatus shown in FIG.
[0017]
The cutting device 18 of the present invention includes upper and lower cutters 30a and 30b having the same diameter for cutting the rear end lower surface 1a and the tip upper surface 2a, and a rotary drive device 32 for rotating the upper and lower cutters 30a and 30b at the same speed. And a cutting surface adjusting device 34 for changing the cutting surface interval h by the cutters 30a and 30b. In this embodiment, the cutters 30a and 30b have a frustoconical outer peripheral surface, and a cutter chip (not shown) is attached to the outer peripheral surface to cut the rear end lower surface 1a and the front end upper surface 2a. ing. The present invention is not limited to such a cutter, and may be a cylindrical cutter or a conical cutter as illustrated in FIG.
[0018]
In FIG. 1, the upper and lower cutters 30a and 30b are attached to the tip ends (left end portions in this figure) of two horizontal rotating shafts 31a and 31b. The rotary shafts 31a and 31b are attached to the main body 18a of the cutting apparatus 18 and a cutter support member 35 described later by bearings 33 so as to be rotatable around the axis. Further, the main body 18a is attached to a traverse table 26a (see FIG. 5) of the lateral movement device, and is horizontally moved in the width direction (direction orthogonal to the paper surface in this figure). In this figure, reference numerals 23a and 23b denote dies, which support the ends of the rolled materials 1 and 2 during the cutting process.
[0019]
2A is a cross-sectional view taken along line AA in FIG. As shown in this figure, the cutting surface adjusting device 34 supports the upper and lower cutters 30a and 30b in a rotatable manner, and a cutter support member 35 that can swing around one cutter axis (rotary shaft 31a in this figure). And a swing drive device 36 that swings the cutter support member 35. As shown in FIG. 1, the cutter support member 35 is rotatably attached to the main body 18 a of the cutting device 18 via the rotation shaft 31 a. The swing drive device 36 is a linear motion cylinder in this example, the cylinder side is attached to the main body 18a, the rod tip is connected to the cutter support member 35, and the cutter support member 35 is moved by expansion and contraction of the rod. The rotary shaft 31a is swung around.
[0020]
With the above-described configuration, the cutting surface adjusting device 34 can swing the cutter support member 35 around the one cutter shaft center (rotating shaft 31a) to bring the other cutter 30b into contact with the cutting surface 2a. Therefore, by controlling the position of one cutter shaft 31a and simultaneously controlling the position or pressure of the swing drive device 36, both cutters 30a and 30b can be controlled to the optimum positions. , 2, the preceding rolled material 1 and the subsequent rolled material 2 can be simultaneously cut while the cutters 30 a, 30 b are uniformly contacted.
[0021]
Further, since the cutting surface interval h of the cutter can be changed (adjusted) by the cutting surface adjusting device 34, even if the deformation or thickness of the cutting surface changes, two rolled materials can be simultaneously applied without causing an excessive load on the cutter. Can be cut.
Further, FIG. 2B shows another embodiment of FIG. 2A, in which the cutter support member 35 can swing around a pin located between the upper and lower cutters 30a and 30b. Other structures are similar to those in FIG. With this configuration, the main body 18a can be positioned, and both cutters 30a and 30b can be simultaneously moved up and down by the swing drive device 36.
[0022]
FIG. 3 is a drive mechanism diagram of FIG. As shown in FIGS. 1 and 3, the rotary drive device 32 includes a rotary drive device 37 (FIG. 1) that rotationally drives one of the upper and lower cutters (the cutter 30a in this figure), and this rotation to the other cutter 30b. And a power transmission mechanism 38 for transmitting. As shown in FIG. 1, the rotation drive device 37 is a hydraulic motor or an electric motor with a reduction gear in this example, and is directly connected to the rotation shaft 31 a of the cutter 30 a and directly rotates. Further, the power transmission mechanism 38 is a gear train as shown in FIG. 3, and includes a drive gear 38a, a driven gear 38b, and two intermediate gears 38c therebetween.
[0023]
With this configuration, the upper and lower cutters 30a and 30b can be rotated in the opposite directions at the same speed, thereby making the cutting direction of the upper and lower plates 1 and 2 the same, and equalizing the cutting resistance and lateral movement resistance. This makes it easy to obtain a uniform cutting surface roughness and can reduce the running resistance of the cutter.
[0024]
In addition, this invention is not limited to this structure, For example, a power transmission mechanism can also be comprised from a timing belt and a pulley. In this configuration, the rotation directions of the upper and lower cutters are the same, but the configuration can be simplified and the size and weight can be reduced. Further, the rotation drive device 37 may be provided independently on each of the two shafts 31a and 31b and driven in synchronization.
[0025]
FIG. 4 is a diagram showing another embodiment of FIG. In this figure, the cutter support member 35 swings about an intermediate shaft 39 provided at an intermediate position between the upper and lower cutters 30a and 30b. With this configuration, the cutting surface adjusting device 34 causes the cutter support member 35 to swing around the intermediate shaft 39 to move both the upper and lower cutters 30a and 30b in opposite directions, so that the respective cutting surfaces 1a and 1b are moved to each other. Can be contacted evenly. Other configurations are the same as those in FIG.
[0026]
In addition, this invention is not limited to embodiment mentioned above, Of course, it can change variously in the range which does not deviate from the summary of this invention.
[0027]
【The invention's effect】
As described above, the rolled material joining apparatus of the present invention can simultaneously cut the preceding rolled material and the succeeding rolled material while bringing the cutter into uniform contact with the upper and lower rolled materials. Even if the height changes, two rolled materials can be cut at the same time without overloading the cutter, and the cutting direction for the upper and lower plates can be made the same. In addition, it has excellent effects such as being able to easily obtain uniform cutting surface roughness and reducing the running resistance of the cutter.
[Brief description of the drawings]
FIG. 1 is a partial configuration diagram of a rolled material joining apparatus according to the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a drive mechanism diagram of FIG. 2;
4 is a diagram showing another embodiment of FIG. 3. FIG.
FIG. 5 is an overall configuration diagram of a conventional rolled material joining apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pre-rolled material 1a Rear end lower surface 2 Subsequent rolled material 2a Front end upper surface 12 Base 14 Rear end clamp device 15 Lifting device 16 Front end clamp device 18 Cutting device 18a Main body 20 Reduction holding device (reduction flame burner)
22 Pressure welding devices 23a, 23b Die 24 Cone cutters 24a, 24b Fractal cone surface 26 Horizontal movement devices 30a, 30b Cutters 31a, 31b Rotating shaft 32 Rotation drive device 34 Cutting surface adjustment device 35 Cutter support member 36 Oscillation drive device 38 Power transmission mechanism 38a Drive gear 38b Driven gear 38c Intermediate gear 39 Intermediate shaft X Inclined axis H Machining height L Pressure contact height

Claims (5)

In the rolling material joining apparatus that includes a cutting device that simultaneously cuts while traveling in the width direction on the lower surface of the rear end portion of the preceding rolled material and the upper surface of the tip portion of the subsequent rolled material,
The cutting device includes an upper and lower cutter that respectively cuts the lower surface of the rear end portion and the upper surface of the tip portion, a rotary drive device that rotates the upper and lower cutters, and a cutting surface adjustment device that changes a cutting surface interval by the cutter. The
The cutting surface adjustment device includes a cutter support member that rotatably supports upper and lower cutters and can swing around one cutter axis, and a swing drive device that swings the cutter support member. A rolled material joining apparatus. In the rolling material joining apparatus that includes a cutting device that simultaneously cuts while traveling in the width direction on the lower surface of the rear end portion of the preceding rolled material and the upper surface of the tip portion of the subsequent rolled material,
The cutting device includes an upper and lower cutter that respectively cuts the lower surface of the rear end portion and the upper surface of the tip portion, a rotary drive device that rotates the upper and lower cutters, and a cutting surface adjustment device that changes a cutting surface interval by the cutter. The
The rotary drive device comprises a rotary drive device that rotationally drives one of the upper and lower cutters, and a power transmission mechanism that transmits the rotation to the other cutter . The rolled material joining apparatus according to claim 2 , wherein the power transmission mechanism includes a gear train. The rolling material joining apparatus according to claim 2 , wherein the power transmission mechanism includes a timing belt and a pulley. In the rolling material joining apparatus that includes a cutting device that simultaneously cuts while traveling in the width direction on the lower surface of the rear end portion of the preceding rolled material and the upper surface of the tip portion of the subsequent rolled material,
The cutting device comprises an upper and lower cutter that respectively cuts the lower surface of the rear end portion and the upper surface of the tip portion, a rotary drive device that rotates the upper and lower cutters, and a cutting surface adjustment device that changes a cutting surface interval by the cutter. ,
The cutting surface adjusting device includes: a cutter support member that rotatably supports upper and lower cutters and capable of swinging about a pin positioned between the upper and lower cutters; and a swing drive device that swings the cutter support member; A rolled material joining apparatus comprising:

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