JP2011083824A - Aligning device, rolling mill and rolling method for material to be worked having rectangular contour - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To evade charging as material to be worked is faced to the working device obliquely by surely performing the alignment of the material to be worked to a working device such as a rolling roll. <P>SOLUTION: In these alignment device, rolling mill and rolling method, by including: a mechanical stopping mechanism such as a beam 6; which includes a stopping face 9 which is parallel to the front face of the working device such as rolling rolls 2, or the regular charging direction and which is set to be movable at a first position where a stopping face 9 or a stopping edge is brought into contact to a side of the top in the conveying direction of the material 1 to be conveyed on a roller table 7 and a second position where the contact is released, by once stopping the conveyance of the material to be worked with the stopping face 9 which is provided with the stopping mechanism, the alignment of the conveying attitude of the material 1 to be worked to the working device such as the rolling rolls 2 is performed surely. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an alignment apparatus, a rolling mill, and a rolling method for a workpiece having a rectangular outer shape, and particularly to an alignment device suitable for alignment of a workpiece having a rectangular outer shape with a high aspect ratio and the alignment thereof. The present invention relates to a rolling mill equipped with an apparatus and a rolling method using the rolling mill.

  For example, a work piece made of a thin plate material having a rectangular outer shape, such as a strip-like or elongated metal plate or slab, which is put into a plate rolling machine and processed, is conveyed by a roller table to the plate rolling machine. Immediately before the loading, it is necessary to align the loading posture so as to face the sheet rolling machine. If the product is obtained by rolling at that time, if it is not aligned in such a face-to-face state and placed into a sheet rolling machine in an oblique state, distortion and error that cannot be ignored in the outer shape and its dimensions will occur. There is a risk that it will occur. In particular, when the outer shape of the workpiece is a rectangle having a high aspect ratio such as a so-called elongated or strip shape, the distortion and error on the left side become more prominent.

  In other words, since the workpiece is only supported by a small number of table rollers, in most cases, the workpiece is accurately faced to the rolling roller when it is put into the rolling roller of the plate rolling mill. The leading edge of the conveying direction is inclined with respect to the axial direction of the rolling section roller. For this reason, one of the four corners (corner part) of the workpiece that reaches the rolling roller first is rolled before the other one that arrives later than that. The And since the rolling will continue to proceed over the entire workpiece, that is, obliquely with respect to the four sides of the workpiece, the outer shape of the product obtained by completing the rolling (the contour shape thereof) ) And its dimensions will cause distortion and errors that cannot be ignored.

  In order to overcome such a problem, some approaches have been proposed in the prior art or have been tried to be implemented (see, for example, Patent Document 1). Among them, the prior art that should be particularly noted for the present invention is as shown in FIG. 1 (FIGS. 1a, 1b, 1c, and 1d).

  In the technique, first, the workpiece 1 is conveyed toward the rolling roller 2 by a roller table 7 including a conveying roller 8a, as shown in FIG. 1a. Here, thick arrows in FIGS. 1 a, 1 b, 1 c, and 1 d indicate the moving directions of the workpiece 1, respectively.

  Then, in order to perform alignment of the workpiece 1 before being put into the rolling roller 2, the workpiece 1 is once abutted against the front surface of the rolling roller 2 as shown in FIG. Thus, the front surface 4 which is one side located at the forefront of the workpiece 1 in the conveying direction is aligned so as to be parallel to the front surface of the rolling roller 2. Subsequently, as shown in FIG. 1c, the workpiece 1 is once moved backward by the reversely rotating transport roller 8a, and then the transport roller 8a is rotated forward again as shown in FIG. 1d. By doing so, it is sent forward and fed into the rolling gap 3 of the rolling roller 2.

Japanese Patent Laid-Open No. 2002-160009

  However, such conventional approaches for solving problems have the disadvantage that the alignment of the workpiece 1 is not necessarily completely ensured, and there is a great risk of producing inconsistent results. Further, since it is necessary to repeatedly reduce and enlarge the rolling gap 3 of the rolling roller every time the workpiece 1 is introduced, such additional setup time and troublesome work are inevitable. Therefore, there is a disadvantage that it causes a decrease in productivity. Further, when the workpiece 1 is pressed against the front surface of the rolling roller 2, there is a disadvantage that the surface of the rolling roller 2 may be damaged or deteriorated due to the pressing force or impact.

  The present invention has been made in view of the problems and inconveniences in the prior art, and the object of the present invention is to apply a workpiece to a processing apparatus such as a plate rolling machine. It has a rectangular outer shape that makes it possible to reliably align the work posture (conveyance angle) of the work piece and reliably prevent the work piece from being thrown into the work apparatus at an angle. An object is to provide an alignment apparatus, a rolling mill, and a rolling method for a workpiece.

  The alignment apparatus for a workpiece having a rectangular outer shape according to the present invention is configured to transfer a workpiece having a rectangular outer shape to a processing device by rotating the conveyance roller on a roller table formed by arranging conveyance rollers. Alignment for workpieces with a rectangular outer shape that conveys and aligns the conveying posture of the workpiece with respect to the front surface of the processing apparatus or the regular loading direction at the leading edge of the workpiece in the conveying direction A stop surface or a stop edge having a direction in accordance with a front surface or a regular loading direction of the processing apparatus, and with respect to one side of a front end in a transport direction of a workpiece transported on the roller table Then, the stop surface or the stop edge comes into contact with each other and the one side is parallel to the stop surface or the stop edge. It is possible to move to a first position, which is a position where the workpiece is moved, and a second position, which is a position where one side of the workpiece in the conveyance direction and the stop surface or stop edge come into contact with each other and release the contact state. It is characterized by having a mechanical stop mechanism.

  Moreover, the rolling mill of the present invention is a rolling mill provided with an alignment device for a workpiece having the above rectangular outer shape, and includes a rolling device having a rolling roller as the processing device, and the roller table Is an unequal diameter formed such that a plurality of constant-diameter conveying rollers are arranged in a row, and the diameters are different from each other in a taper shape or a step shape from one end to the other end in the axial direction. A plurality of conveying rollers arranged in a row, and the one end and the other end of adjacent ones of the plurality of unequal diameter rollers are opposite to each other. And the first region extends to the rolling roller along the transport direction from at least two roll pitches before the first position of the mechanical stop mechanism. As a feature That.

  Further, the rolling method of the present invention is a rolling method in which a workpiece having a rectangular outer shape is conveyed to a rolling roller by a roller table and rolled by the rolling roller, and is a stop surface or stop edge serving as an alignment reference. A mechanical stop mechanism provided in the transport path of the workpiece to the rolling roller along the roller table, and one end of the workpiece in the transport direction on the stop surface or stop edge , The step of aligning the workpiece conveyance posture with respect to the rolling roller, and after performing the alignment, the mechanical stop mechanism is raised to remove from the workpiece conveyance path. Whether the workpiece has been transported by the mechanical stop mechanism. Released, the remains of the aligned conveying position, is characterized in that it comprises a step of conveying to the rolling roller by the roller table.

  Here, as a desirable mode of the mechanical stop mechanism according to the present invention, the mechanical stop mechanism is realized as a beam that is arranged above the roller table so as to be movable between the first position and the second position. It is possible. Further, the beam can be mechanically moved between the first position and the second position by, for example, a hydraulic cylinder.

  According to the present invention, most basically, for example, it is provided with a stop surface or a stop edge having a direction in accordance with the front surface of a processing device such as a rolling roller in a rolling device or a regular charging direction, on the roller table. The stop surface or the stop edge comes into contact with and contacts one side of the conveyance direction tip of the workpiece to be conveyed, and the one side of the workpiece is aligned parallel to the stop surface or the stop edge. The first position, which is a position where the workpiece is conveyed, and the second position, which is a position where the side where the one end of the workpiece in the conveying direction is in contact with the stop surface or the stop edge are released, are released. Since the mechanical stop mechanism is provided, the roller table is still in contact with the mechanical stop mechanism. By a conveying force applied, the conveying direction leading edge of one side of the workpiece is naturally aligned so as to be parallel to the stop surface or stop edge of the mechanical stop mechanism. As a result, reliable alignment can be reliably performed on the workpiece, and it can be reliably avoided that the workpiece is thrown obliquely into a processing apparatus such as a rolling roller. It becomes possible.

It is a figure which shows an example of the method of aligning a workpiece in the rolling mill by a prior art. It is a figure which shows the rolling method provided with the rolling mill provided with the alignment apparatus for the workpiece which has the rectangular external shape which concerns on one embodiment of this invention, and the alignment method by it. A rolling mill provided with an alignment apparatus for a workpiece having a rectangular outer shape as a first variation according to an embodiment of the present invention, which is different from the configuration shown in FIG. 2, and an alignment method using the rolling mill It is a figure which shows the rolling method included. A rolling mill provided with an alignment device for a workpiece having a rectangular outer shape, as a second variation according to an embodiment of the present invention, which is different from the configuration shown in FIGS. It is a figure which shows the rolling method including the alignment method by.

  Hereinafter, an alignment apparatus, a rolling mill, and a rolling method for a workpiece having a rectangular outer shape according to an embodiment of the present invention will be described with reference to the drawings.

  The main structure of the rolling mill provided with the workpiece alignment device according to the embodiment of the present invention is as shown in FIG. 2 (FIGS. 2a, 2b, 2c, and 2d). Yes. A rolling mill stand housing 5 is provided at a predetermined position in front of the rolling roller 2 that performs the main function of the rolling process. A beam 6 is attached in front of the rolling mill stand housing 5 as a desirable mode of the mechanical stop mechanism.

  The beam 6 is disposed above the roller table 7 so as to cross the progress of the workpiece 1 conveyed by the roller table 7. And the stop surface 9 (or stop edge; the same applies hereinafter) of the beam 6 allows the work piece 1 to be fed in a straight line with respect to the front surface of the rolling roller 2 without being inclined. As a reference plane for aligning the orientation of the workpiece 1 with respect to the rolling roller 2, that is, the orientation of the workpiece 1 with respect to the rolling roller 2, it is set to be parallel to the axial direction of the rolling roller 2. Here, the front surface of the rolling roller 2 is a regular insertion surface on which the workpiece 1 is to be input to the rolling roller 2, and the direction parallel thereto is in this case the axial direction of the rolling roller 2. The direction is orthogonal to the direction.

  The beam 6 is mechanically operated by an actuator (not shown) such as a hydraulic cylinder, for example, to be lowered to a predetermined position as shown in FIGS. 2a, 2b, and 2c, and at that position. The workpiece 1 can be pressed against the stop surface 9 and is raised to a predetermined position as shown in FIG. 2d so that the workpiece 1 can pass under the position. Is set to

  That is, the work piece 1 must be aligned before the work piece 1 enters the rolling gap 3 of the rolling roller 2. To that end, as shown in FIG. As shown in FIGS. 2 b and 2 c, the workpiece 1 that has been conveyed to the position is pushed against the stop surface 9 of the beam 6, and is naturally against the stop surface 9. Alignment is performed so that the posture of the workpiece 1 is parallel. Since the workpiece 1 is parallel to the stop surface 9 in this way, since the stop surface 9 is set parallel to the axial direction of the rolling roller 2, after all, the workpiece is processed. This means that the posture of the object 1 is aligned parallel to the rolling roller 2.

  After the workpiece 1 is thus aligned, the beam 6 is pushed up and removed from the front of the workpiece 1. Then, the workpiece 1 released from the mechanical stop by the beam 6 is conveyed by the roller table 7 and travels forward as shown in FIG. 2d, to the rolling gap 3 of the rolling roller 2. Is thrown in.

  FIG. 3 shows, as a first variation according to an embodiment of the present invention different from the configuration shown in FIG. 2, a rolling mill provided with an alignment device for a workpiece having a rectangular outer shape, and the rolling mill according thereto It is a figure which shows the rolling method containing the alignment method. The first variation will be described with reference to FIG. 3. The workpiece 1 is conveyed by a turntable region 7 b provided as a second region in the roller table 7. The workpiece 1 can be changed in direction (posture) with respect to the conveying direction.

  That is, the turntable region 7b includes a plurality of unequal diameter rollers 8b made of a so-called tapered cylinder body whose diameter changes from one end to the other end along the axial direction. The adjacent tapers are arranged so that their taper directions are opposite to each other. That is, the first, third, fifth,... Unequal diameter rollers 8b in the conveying direction of the workpiece 1 are arranged so that the maximum diameter portion is located on one side edge side of the turntable region 7b. The second, fourth, sixth,... Unequal diameter rollers 8b are arranged such that the maximum diameter portion is on the other (other) side edge side of the turntable region 7b. As the unequal diameter roller 8b arranged in the turntable region 7b, in addition to the tapered roller, for example, a roller provided so that its diameter changes in a stepwise manner in the axial direction thereof may be used. Is possible.

  In the structure of the turntable region 7b, when all the unequal diameter rollers 8b are rotated in the same direction, the workpiece 1 moves linearly along the arrangement direction of the unequal diameter rollers 8b. Become. Then, the workpieces 1 are aligned so that their postures (directions) with respect to the transport direction (that is, the arrangement direction of the unequal diameter rollers 8b) are eventually parallel to the transport direction. Alternatively, when adjacent unequal diameter rollers 8b are rotated in opposite directions, the workpiece 1 is rotated in one direction. For example, when the posture is changed by 90 ° and the side that has been positioned at the forefront in the conveying direction of the workpiece 1 is a long side, the workpiece 1 is rotated by 90 °. As a result, a short side is newly located at the forefront of the transport direction.

  In general, the roller table 7 is provided with at least a straight region 7 a formed by arranging a plurality of constant diameter rollers 8 a in parallel as a first region at least immediately before the rolling roller 2. The workpiece 1 passes over the linear region 7a at least immediately before being introduced into the rolling gap 3 of the rolling roller 2.

  FIG. 4 shows an alignment for a workpiece having a rectangular outer shape as still another second variation according to the embodiment of the present invention, which is different from the configuration shown in FIGS. It is a figure which shows the rolling method including the rolling mill provided with the apparatus, and the alignment method by it. The second variation will be described with reference to FIG. 4. When the work piece 1 is placed on the turntable region 7b, it is easily affected by misalignment, and the length of the turntable region 7b. If the length is not long to some extent, there is a tendency that the above-described action of aligning the posture or the action of rotating to a desired angle, that is, the possibility of failing to reliably achieve alignment. And the tendency will become stronger if the straight line area 7a ahead is too short. Therefore, as one of the more desirable modes in the embodiment of the present invention, as shown in a typical example in FIG. 4, the necessary and sufficient length of the turntable region 7b is ensured. In addition, the linear region 7a is further extended as in the case of the first variation, so that the workpiece 1 can be reliably aligned with the beam 6, and the alignment can be performed by a mechanical stop mechanism such as the beam 6. It is also effective to be able to maintain the rolling gap 3 more reliably.

  A rolling mill including an alignment apparatus for a workpiece having a rectangular outer shape according to an embodiment of the present invention, and a rolling method including the alignment method according to the rolling method, in particular, an outer shape whose width exceeds its length. Can be used particularly suitably for the workpiece 1, that is, the workpiece 1 having a high aspect ratio of the outer dimensions. Further, the length of the shortest work piece 1 that can be handled is generally about two roller pitches. Therefore, from this point of view, in the second variation configuration shown in FIG. 4, the linear region 7 a in the direction orthogonal to the axial direction of the rolling roller 2 (that is, the direction parallel to the conveying direction). It is more desirable that the length (the length in the direction along the thick arrow) is a length extending from the beam 6 at least two roller pitches before to the rolling roller 2.

  As described above, according to the alignment apparatus, the rolling mill, and the rolling method for a workpiece according to the embodiment of the present invention, the rolling roller of the plate rolling machine in which the workpiece 1 is a typical example of the processing apparatus. Before being put into the machine 2, a reliable alignment is surely performed on the workpiece 1 to ensure that the workpiece 1 is in an oblique posture with respect to the axial direction of the rolling roller 2. It can be avoided.

  In addition, according to the alignment apparatus, rolling mill, and rolling method for a workpiece according to the embodiment of the present invention, even if a plurality of types of workpieces having different external dimensions and aspect ratios are the same, With the setting of the beam 6 and the roller table 7, it becomes possible to perform highly reliable alignment reliably. That is, it is not necessary to change the setting of the beam 6 and the roller table 7 corresponding to each workpiece having different external dimensions and aspect ratios. Therefore, the workpiece alignment apparatus, rolling mill, and rolling method according to the embodiment of the present invention have the technical significance of being a technology that can easily cope with so-called low-mix, low-volume production of workpieces. ing. Moreover, even if a mechanical stop mechanism such as the beam 6 causes damage or breakage due to the impact when the workpiece 1 hits the stop surface 9, they are the most in the rolling mill. Since it can be replaced or repaired completely independently of the rolling roller 2 which is an important processing device, the workpiece 1 is placed on the front surface of the rolling roller 2 as in the case of the alignment method according to the prior art. Alignment for the workpiece according to the embodiment of the present invention is also advantageous in that damage or breakage of the rolling roller 2 that may have occurred when it is made to abut can be fundamentally avoided. An apparatus, a rolling mill and a rolling method are provided.

  In the above-described embodiment, as an example of the mechanical stop mechanism, the case of using the beam 6 having a shape in which a quadrangular column is disposed sideways has been described, but the specific shape of the mechanical stop mechanism is described. Of course, the embodiment is not limited to this. In addition to this, although not shown in the drawings, for example, a thin plate is used so that its main surface becomes a stop edge having the same function as the stop surface 9, or a single linear one or It is also possible to arrange a plurality of pieces in a direction orthogonal to the conveying direction of the workpiece 1 (that is, in parallel with the axial direction of the rolling roller 2) so as to function as a stop edge. Alternatively, a plurality of columnar bodies are arranged side by side in a direction orthogonal to the conveyance direction of the workpiece 1, and the workpiece 1 is pressed against the column of the columnar bodies, and the axial direction of the rolling roller 2. After the alignment is performed in parallel, it is possible to release the stop by the columnar body.

  Moreover, as a processing apparatus, in addition to the rolling apparatus provided with the rolling roller 2 as described above, for example, a cutting apparatus, a cutting apparatus pattern transfer apparatus, and a coating apparatus that require accurate alignment along the processing direction. The present invention is also applicable to the above.

  Further, the posture (angle) of the workpiece 1 with respect to the front surface, that is, the axial direction of the rolling roller 2 as a regular insertion surface, is not parallel (not angle = 0) but has a desired angle. It is also possible. Such a further variation can be realized, for example, by setting the stop surface 9 of a mechanical stop mechanism such as the beam 6 to form a desired angle with respect to the rolling roller 2. .

DESCRIPTION OF SYMBOLS 1 Workpiece 2 Rolling roller 3 Rolling gap 5 Rolling mill stand housing 6 Beam 7 Roller table 7a Straight line region 7b Turntable region 8a Constant diameter roller 8b Unequal diameter roller 9 Stop surface

Claims (5)

A workpiece having a rectangular outer shape is conveyed to a processing device by rotation of the conveyance roller on a roller table in which conveyance rollers are arranged, and one side of the conveyance direction front end of the workpiece is processed as described above. An alignment apparatus for a workpiece having a rectangular outer shape, which aligns the conveying posture of the workpiece so as to be parallel to the front surface of the apparatus or parallel to the regular input direction of the workpiece. Because
A conveyance direction in the workpiece having a stop surface (or a stop edge; the same shall apply hereinafter) parallel to the front surface of the processing apparatus or parallel to the regular input direction and conveyed on the roller table. Move between a first position, which is a position where the stop surface is brought into contact with one side of the tip to stop the conveyance of the workpiece, and a second position, which is a position where the contact is released. An alignment apparatus for a workpiece having a rectangular outer shape, comprising a mechanical stop mechanism configured to be settable. The alignment apparatus for a workpiece having a rectangular outer shape according to claim 1,
An alignment apparatus for a workpiece having a rectangular outer shape, wherein the mechanical stop mechanism is a beam disposed above the roller table. The alignment apparatus for a workpiece having a rectangular outer shape according to claim 2,
An alignment apparatus for a workpiece having a rectangular outer shape, wherein the beam is mechanically operated by a hydraulic cylinder to move between the first position and the second position. A rolling mill comprising an alignment device for a workpiece having a rectangular outer shape according to any one of claims 1 to 3,
A rolling device having a rolling roller as the processing device;
The roller table has a first region in which a plurality of constant-diameter conveying rollers are arranged, and an unequal diameter in which the diameters are different from each other in a taper shape or a step shape from one end to the other end in the axial direction. A second region in which a plurality of conveying rollers are arranged,
The plurality of unequal diameter transport rollers are arranged so that the one end and the other end of adjacent ones are opposite to each other,
And the said 1st area | region is extended to the said rolling roller along the said conveyance direction from at least 2 roll pitch before the said 1st position of the said mechanical stop mechanism, The rolling mill characterized by the above-mentioned. A work piece having a rectangular outer shape is conveyed to a rolling roller by a roller table, and is a rolling method for rolling by the rolling roller,
A mechanical stop mechanism having a stop surface serving as an alignment reference is disposed in the workpiece conveyance path to the rolling roller along the roller table, and the workpiece is conveyed in the stop surface. Aligning the rolling posture of the workpiece conveying posture by bringing one end of the tip into contact with the workpiece; and
After performing the alignment, the mechanical stop mechanism is lifted and removed from the workpiece conveyance path, whereby the workpiece is stopped from being conveyed by the stop surface of the mechanical stop mechanism. And the step of conveying to the rolling roller by the roller table while maintaining the aligned conveying posture.

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