JP2010105110A - Thick-plate different-length shearing device and thick-plate different-length shearing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thick-plate different-length shearing device and its method for carrying out efficient thick-plate different-length shearing by an end shear, requiring a low cost of equipment investment and a low cost of equipment maintenance management, and hardly generating slip contact with table rollers of a carrying-in side conveyance table. <P>SOLUTION: The device includes a stopper capable of rising/descending for aligning edges of steel plates installed between the table rollers of the carrying-in side conveyance table, a steel plate length measuring device for measuring a movement amount of the other steel plate when one steel plate is used as a reference, and a guide for positioning an edge part of the steel plate in the width direction provided at a width-direction end part of the carrying-in side conveyance table. Using a ceiling crane of a thick plate shearing line, the one steel plate which is the reference is hoisted by crane equipment. Then, when the steel plate is lowered, the one steel plate is lowered along a stopper raised to align the edge of the one steel plate and the steel plate width-direction edge part positioning guide for positioning the one steel plate. The method using the device is also provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a thick plate different length shearing apparatus and a thick plate that are suitable for use in a shearing technique in which a steel plate divided into two parts is sheared by an endorser when shear positions (also referred to as shear lines) of the two divided steel plates are different in the longitudinal direction. The present invention relates to a different length shearing method.

In general, in the production of thick plates, various widths and lengths are combined, a single rolled steel sheet is rolled, and then sheared to obtain a product of a predetermined size.
FIG. 7 shows a typical plank shear line 10. A cropping shear 11, a side shear 12, a slitter 13, and an end shear 14 are installed in this order from the upstream side, and each shearing machine is connected by a transport table 15.

FIG. 8A shows that the products A1, A2, A3, B1, B2, and B3 are included in one rolled steel plate W, and FIG. 8B shows a steel plate divided into two by a slitter. W1 and W2 are shown.
In the cropping shear 11 and the side shear 12, a shearing work is performed to shear along the shearing lines 18 and 19 in order to obtain a rectangular steel sheet. In the slitter 13, the shearing line 16 is obtained in order to obtain the two-divided steel sheets W1 and W2. A shearing operation is performed to shear along. Subsequently, a shearing operation is performed on the two divided steel plates W1 and W2 by shearing along the shear line 17 by the endsha.

  Here, as shown in FIG. 8B, the steel plates W1 and W2 after being divided into two include (A1, B1), (A2, B2), and (A3, B3) in order from the front end in the longitudinal direction. The product length is different in those groups. In such a case, after matching the shearing position (shear line 17) of the steel plate divided in two on the entry-side transport table, the two-part steel plate is transported to the endsha by the entrance-side transport table, and the shearing matched in the endsha It is necessary to simultaneously shear the steel plates divided into two along the position. This shearing operation is hereinafter referred to as thick plate different length shearing by endsha.

When trying to perform the different length shearing method using an endsha with an overhead crane on a thick plate shearing line, one steel plate W1 of the two divided steel plates is lifted and then suspended by the overhead crane. Therefore, there is a problem that it takes time to align with the shearing position of the other W2 left on the entry side conveyance table, and the efficiency is poor.
On the other hand, one steel plate W1 of the two divided steel plates is temporarily placed between the entry side transfer table and the soil with an overhead crane, the other W2 left on the transfer table is sheared first, and then temporarily placed between the soils. In the method of performing the shearing work after placing the one steel plate W1 on the entrance-side transport table with the overhead crane, there is a problem that the number of shearing by the endsha increases and the efficiency is poor.

Therefore, various shearing techniques for efficiently performing the different thickness shearing method using thick plates have been proposed (Patent Documents 1 to 3).
The steel plate shearing technique described in Patent Document 1 includes an entrance-side transfer table 7 that enables two divided steel plates to be transported in parallel and independently, and the other steel plate W2 when one steel plate W1 is used as a reference. A steel plate length measuring device (not shown) for measuring the movement amount ΔL is required (see FIG. 3).

As shown in FIG. 3, the steel plate shearing technique described in Patent Document 1 requires a plurality of table rollers 2 divided in the width direction to be arranged in the transport area TA. There is a disadvantage that the cost increases.
Furthermore, the steel plate shearing technique described in Patent Document 1 includes the table roller 2 in which the two divided steel plates W1 and W2 are divided into two in the width direction from the transport region TB having an integrated table roller in the width direction. There is also a drawback in that when it comes over the transport area TA, the other steel plate W2 must be transported in parallel and independently, and transport control must be performed with the movement amount ΔL as a predetermined value.

  In the steel plate shearing technique described in Patent Document 2, a lift-up device 20 that can lift each steel plate W1, W2 independently is installed between the table rollers 2 of the entry-side transport table 7, and one steel plate used as a reference. This is a technique for moving the other steel plate W2 forward or backward by the entry-side transport table 7 in a state where W1 is lifted. For this reason, the conveyance control which conveys the other steel plate W2 mutually in parallel and independently is not necessary, but in order to lift one steel plate W1 used as a reference, an individual lift-up device corresponding to the dimension of one steel plate W1. 20 needs to be activated (see FIG. 4).

Therefore, when it is attempted to realize the different thickness shearing by the end shear by the steel plate shearing technique described in Patent Document 2, the capital investment cost of the lift-up device 20 installed between the table rollers 2 as shown in FIG. In addition, there is a drawback in that the equipment maintenance cost for maintaining the operation so that it operates normally increases.
The steel plate shearing technique described in Patent Document 3 is provided with a stopper 21 that abuts the tip of one steel plate W1 between the table rollers 2 of the entry-side transport table 7, and the reference one steel plate W1 is inserted by the stopper 21. This is a method of holding on the side transfer table 7 and transferring the other steel plate W2 with the entry side transfer table 7 between them, and setting the movement amount ΔL to a predetermined value (see FIG. 5).

The amount of movement ΔL in this case matches the shear position (shear line 8) when the thick plate products (C1, D1) and (C2, D2) shown in FIG. 6 are sheared. When the product C1 length of the one steel plate W1 is set as a value necessary for the other steel plate W2, the ΔL> 0 is defined. When the movement amount ΔL> 0, as shown in FIG. 5, the other steel plate W2 is moved forward toward the endorser with respect to the one steel plate W1 used as a reference.
JP-A-57-107728 Japanese Patent Laid-Open No. 11-90728 JP 2007-185732 A

According to the steel plate shearing technique described in Patent Document 3, as shown in FIG. 5, it is only necessary to provide a stopper 21 that abuts the tip of one steel sheet W1 between the table rollers 2. Compared to 2, equipment investment costs and equipment maintenance costs can be reduced.
However, in the steel plate shearing technique of Patent Document 3, in order to realize the thick plate different length shearing method by the endsha 1, one steel plate W1 as a reference is used as the stopper 21 until the moving amount ΔL becomes equal to the set value. Therefore, it is necessary to hold and place it on the entry side transfer table 7.

For this reason, as the mass of one of the steel plates W1 used as a reference increases or the set value of the movement amount ΔL increases, the slip contact between the table roller 2 of the entry-side transport table 7 and the steel plate lower surface causes slippage on the steel plate lower surface. There is a disadvantage that occurs.
The present invention eliminates the above-mentioned problems of the prior art, reduces capital investment costs and equipment maintenance and management costs, makes slip contact with the table roller of the entry-side transport table difficult, and is efficient. It is an object of the present invention to provide an apparatus and method for different thickness shearing of a thick plate capable of different thickness shearing.

  As a result of intensive studies on the thick plate different length shearing technology using the endorser, the present inventors used an overhead crane of a thick plate shear line to lift one steel plate as a reference and then suspend one steel plate. The present inventors have found that the above-mentioned problems can be solved by combining a stopper raised for aligning the tip and a guide for positioning the edge portion in the steel sheet width direction, and have reached the present invention based on this knowledge.

That is, the present invention is as follows.
1.2 Match the shearing position of the divided steel plate on the entry side conveyance table, then convey the two divided steel plates to the endsha by the entry side conveyance table, and simultaneously at the same time along the shearing position where the two divided steel plates are matched In a shearing device that shears with an endsha, measures the amount of movement of the other steel plate when one steel plate is used as a reference, and a stopper that can be moved up and down to align the tips of each steel plate installed between the table rollers of the entry side conveying table. A steel plate length measuring device, and a steel plate width direction edge portion positioning guide provided at the width direction end of the entry-side transport table. Using the overhead crane of the plate shear line, along with the stopper raised to align the tip of one steel plate and the edge guide for positioning in the steel plate width direction, Plank different length shearing apparatus characterized by being configured so as to lower the plate.
2. The stopper that can be moved up and down also has a function of stopping the operation of the entry-side transfer table at the timing when the tips of the steel plates are aligned. The thick plate different length shearing device described in 1.
3. The steel plate length measuring device is capable of transmitting a signal for stopping the operation of the entry side transfer table when the measured movement amount matches a predetermined value. Or 2. The thick plate different length shearing device described in 1.
4). After matching the shear position of the two divided steel plates on the entry side conveyance table, the two divided steel plates are conveyed to the endsha by the entry side conveyance table, and at the same time in the end shear along the shear position where the two divided steel plates are matched. In the shearing method for shearing, the above 1. To 3. Using the thick plate different length shearing device according to any one of the above, the stopper installed between the table rollers of the entry side conveyance table is raised, and the tip of the two divided steel plates being conveyed contacts the stopper. The process of aligning the tips of the respective steel plates in contact with each other, and the operation of the entry side transfer table was stopped at the timing when the tips of the respective steel plates were finished, and then one steel plate whose tips were finished aligned was lifted by the crane equipment. After that, the step of lowering the stopper of the other steel plate whose ends are aligned and the operation of the entry side transfer table are resumed, and the movement amount of the other steel plate when the one steel plate is used as a reference is measured by the steel plate length measuring device. A step of stopping the operation of the entry-side transfer table when the measured movement amount matches a predetermined value. Plank different length shearing method characterized by the state of the stopper is raised to align the tip of the steel plate, and along a said steel plate width direction edge portion positioning guide is lowered one of the steel sheet.

  According to the present invention, when suspending one steel plate as a reference with a crane facility, the overhead crane of the thick plate shear line is used, and the stopper in a state of being raised to align the tips of the one steel plate, and the steel plate Since one steel plate is lowered along the width direction edge portion positioning guide, the one steel plate can be accurately positioned while preventing the one steel plate from swinging. Therefore, an increase in capital investment cost and equipment maintenance management cost can be suppressed, slip contact is unlikely to occur between the table roller of the entry-side transport table and the steel plate lower surface, and efficient thick plate different length shearing can be performed by the endorser.

The present invention will be described below.
FIG. 1 is a plan view illustrating a thick plate different length shearing device used in the method of the present invention, and FIG. 2 is a plan view illustrating the method of the present invention. First, a thick plate different length shearing device used in the method of the present invention will be described with reference to FIG.
Reference numeral 1 denotes an end shear that shears to a desired product length. A slitter is provided upstream of the endsha 1, and the steel plates W1 and W2 divided into two by the slitter are sent to the endsha 1 by the entrance-side transport table 7. A plurality of integral table rollers 2 are arranged in the width direction on the entry side conveyance table 7, and an output side conveyance table (not shown) in which a plurality of similar table rollers 2 are arranged on the downstream side of the endsha 1 is also arranged. Has been. Such equipment arrangement is the same as that of the conventional thick plate shear line 10 (see FIG. 7).

The plate different length shearing device used in the method of the present invention has the following configuration in order to suppress an increase in capital investment cost and facility maintenance management cost.
That is, as shown in FIG. 1, the thick plate different length shearing device includes vertically movable stoppers 3 </ b> A and 3 </ b> B that align the tips of the two divided steel plates W <b> 1 and W <b> 2 installed between the table rollers 2 of the entry-side transport table 7. , A steel plate length measuring device 6 for measuring the amount of movement of the other steel plate when one steel plate is used as a reference, and a steel plate width direction edge portion positioning guide 5 provided at the width direction end of the entry-side transport table 7; Are provided.

Here, as the crane equipment 4, an overhead crane with an electromagnetic lift magnet that can lift and suspend one steel plate W <b> 1 as a reference and can be attracted and separated is appropriately used. A plurality of such overhead cranes are provided in the plate shear line.
The stoppers 3A and 3B can be moved up and down independently. Although the raising / lowering timing will be described later, this independently raising / lowering stopper also has a function of quickly stopping the operation of the entry-side transport table 7 at the timing when the leading ends of the respective steel plates W1, W2 are aligned.

  The stopper 3A close to the steel plate width direction edge portion positioning guide 5 is brought into contact with the tip of one steel plate W1 as a reference, and the stopper 3B separated from the steel plate width direction edge portion positioning guide 5 is the other steel plate. It abuts on the tip of W2. One steel plate W1 is lifted and suspended by the crane equipment 4 among the steel plates whose ends have been aligned (see FIGS. 2 (a) and 2 (b)).

As the steel plate length measuring device 6 for measuring the movement amount ΔL, a known contact-type measuring roll may be arranged near the tip of the other steel plate W2, and according to the contact-type measuring roll, the other steel plate W2 is used. The amount of movement ΔL can be accurately measured while lowering the stopper 3B used to align the other steel plates and transporting the other steel plate W2 by the entrance-side transport table 7.
That is, after the ends of the steel plates W1 and W2 are aligned with the stoppers 3A and 3B, the stopper 3B used for aligning the other steel plate W2 is lowered, and then the steel plate measurement is performed until one steel plate W1 is suspended. The moving amount ΔL is measured by the long device 6. Until the movement amount ΔL reaches a predetermined value, the step of measuring while transporting the other steel plate W2 with the entry-side transport table 7 is performed in a state where the one steel plate W1 used as a reference is lifted by the crane equipment 4.

  Therefore, when carrying out shear shearing with thick plates by the endsha 1, when the tips of the two divided steel plates W 1, W 2 are aligned with the stoppers 3 A, 3 B, at the timing when the tips of the respective steel plates W 1, W 2 have been aligned, the entry side conveyance While stopping the operation of the table 7 promptly and while the other steel plate W2 is transported by the entrance transport table 7 with respect to one steel plate W1 until the movement amount ΔL reaches a predetermined value, the one steel plate W1 is moved to the crane facility. 4, the slip contact is unlikely to occur between the table roller 2 of the entry side transfer table 7 and the lower surface of the steel plate.

However, the crane equipment 4 of the thick plate shearing line such as an overhead crane can lift heavy steel plates, but when the thick steel plates are hung, vibrations occur, so the crane equipment 4 can be accurately lowered to a predetermined position. It ’s difficult.
Therefore, in the thick plate different length shearing device used in the method of the present invention, a steel plate width direction edge portion positioning guide 5 is newly provided at the width direction end portion of the entry-side transport table 7, and the crane equipment 4 is operated to When the steel plate W1 is suspended, the one steel plate W1 is lowered along the stopper 3A raised to align the front ends of the one steel plate W1 and the steel plate width direction edge portion positioning guide 5. Therefore, while preventing the swing by the crane equipment 4, the tip of one steel plate W1 can be made to coincide with the contact surface of the stopper 3A before lifting, and the width direction of one steel plate W1 can be made to coincide with the conveying direction. .

The steel sheet width direction edge portion positioning guide 5 may be always provided at the width direction end portion of the entry-side transport table 7, but it may be lower than the table roller 2 so as not to disturb when not in use. It may be provided so that it can be raised and lowered.
Next, the method of the present invention using the thick plate different length shearing device will be described.
First, the stoppers 3A and 3B installed between the table rollers of the transfer table 7 are raised, and the tips of the two divided steel plates W1 and W2 conveyed are brought into contact with the stoppers 3A and 3B so that the tips of the respective steel plates are moved. After stopping the operation of the entry-side transport table 7 at the time of aligning and the timing of aligning the tips of the steel plates W1 and W2, as shown in FIG. 2A, the crane equipment 4 is operated to align the tips. One finished steel plate W1 is lifted by the crane equipment 4. Thereafter, the step of lowering the stopper 3B of the other steel plate W2 whose ends are aligned and the operation of the entry-side transport table 7 are resumed, and the movement amount ΔL of the other steel plate W2 when the one steel plate W1 is used as a reference is determined. As shown in FIG. 2 (b), it was measured by the steel plate length measuring device 6 and passed through a step of stopping the operation of the entry side transfer table 7 when the measured movement amount ΔL coincided with a predetermined value. One steel plate W1 is suspended by the crane equipment 4. At that time, as described above, the one steel plate W1 is lowered along the stopper 3A in a state of being raised to align the front ends of the one steel plate W1 and the steel sheet width direction edge portion positioning guide 5.

  Therefore, according to the method of the present invention described above, neither of the steel plates W1 and W2 divided into two by the slitter is sheared from the steel plate divided into two on the entry side conveyance table without being lowered from the entry side conveyance table to the soil. After matching the positions, the two-part steel plate is conveyed to the endsha by the entry side conveying table, and the two-part steel plate is sheared at the same time along the shearing position matched by the endshaft.

It is a top view explaining the thick plate different length shearing apparatus used for this invention method. It is a top view explaining the method of the present invention. 10 is a plan view for explaining a thick plate shearing method described in Patent Document 1. FIG. 10 is a plan view for explaining a thick plate shearing method described in Patent Document 2. FIG. 10 is a plan view for explaining a thick plate shearing method described in Patent Document 3. FIG. It is a top view of the steel plate divided into two which applies the thick plate different length shearing method by an endsha. It is a top view of an example thick plate shear line. (A) is a top view of the rolled steel plate which combined the product of the thick plate, (b) is a top view of the steel plate divided into 2 which applies the thick plate different length shearing method by an endsha.

Explanation of symbols

W Rolled steel sheet W1, W2 Divided steel sheet ΔL Movement amount TA, TB Transport area 1 Endsha 2 Table roller 3A, 3B Stopper 4 Crane equipment 5 Steel sheet width direction edge portion positioning guide 6 Steel sheet length measuring device 7 Incoming transport table 8 Shear position (shear line)
10 Thick plate shear line
11 Cropsha
12 Side Sha
13 Slitter
14 Endsha
15 Transport table
16, 17, 18, 19 Shear position (shear line)
20 Lift-up device
21 Stopper

Claims (4)

After matching the shear position of the two divided steel plates on the entry side conveyance table, the two divided steel plates are conveyed to the endsha by the entry side conveyance table, and at the same time in the end shear along the shear position where the two divided steel plates are matched. In a shearing device for shearing,
A stopper capable of moving up and down that aligns the tips of the steel plates installed between the table rollers of the entry side conveying table, a steel plate length measuring device that measures the amount of movement of the other steel plate with respect to one steel plate, and the input A steel plate width direction edge part positioning guide provided at the width direction end of the side transfer table, and when using one of the reference steel plates to lift and then suspend it, use a thick plate shear line overhead crane The steel plate is configured so that one steel plate is lowered along the stopper raised to align the front ends of one steel plate and the edge guide for positioning in the steel plate width direction. Long shear device.   The thick plate different length shearing device according to claim 1, wherein the elevating stopper also has a function of stopping the operation of the entry-side transport table at the timing when the leading ends of the steel plates are aligned.   The said steel plate length measuring apparatus can transmit the signal which stops the driving | operation of the said entrance side conveyance table, when the measured moving amount corresponds to a predetermined value. Thick plate different length shearing device. After matching the shear position of the two divided steel plates on the entry side conveyance table, the two divided steel plates are conveyed to the endsha by the entry side conveyance table, and at the same time along the shear position where the two divided steel plates are matched In the shearing method for shearing, using the plate different length shearing device according to any one of claims 1 to 3,
A step of raising a stopper installed between the table rollers of the entry side conveying table, bringing the two divided steel plates being conveyed into contact with the stopper and aligning the tips of the respective steel plates;
Stop the operation of the entry-side transfer table at the timing when the front ends of each steel plate are aligned, then lift the steel plate with the front end aligned with the crane equipment, and then stop the other steel plate with the front end aligned Lowering the
The operation of the entry-side transfer table is resumed, and the amount of movement of the other steel plate relative to one steel plate is measured by the steel plate length measuring device. A step of stopping the operation of the side transfer table,
When suspending one steel sheet as a reference with a crane facility, one steel sheet is aligned with the stopper in a state of being raised to align the tips of the one steel sheet and the edge guide for positioning in the width direction of the steel sheet. Slab different length shearing method characterized by lowering.

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