JPS6368267A - Method and device for cutting classification of steel plate - Google Patents

Abstract

PURPOSE:To perform the cutting adaptive to the material and shape of a coupon by an intensive mechanism with high efficiency by positioning the coupon with its loading simultaneously respectively at the equal division work position of a horizontal turn table and performing the cutting by a selective torch and carrying out with classification. CONSTITUTION:The coupon 3a carried in by a transfer device 5 in the 1st station of the horizontal hexaequi division turn table 1 with a rotary shaft 2 as the center performs the positioning by cylinders 7, 8 of positioning 6 by the instruction of an encoder detector 9 for a stopper 10 and clamps 10 to the stopper 10. The coupons 3b, 3c, 3d turned to the 2nd-4th stations cut the test piece in the prescribed shape by the torch 18 suitable for the material and plate thickness selected from the plural torches 18 on a traveling saddle 14 and cross rail 15 respectively and carry out respectively by a sorting conveyor 19. The 5th station is spare and the 6th station is for carrying out surplus materials. Various cuttings are simultaneously performed irrespective of the loading and carrying out times even if the material and shape of the coupon 3 vary and the cutting work can be executed with high efficiency with a compact structure.

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention is used in a steel rolling line to melt-cut a steel plate for the purpose of re-cutting a coupon into a large number of test pieces. It concerns sorting methods and equipment.

<Prior Art> Conventionally, a wide variety of so-called test piece cutting machines have been used as auxiliary equipment for rolling lines in steel mills.
Techniques such as those shown in Japanese Patent No. 129 and No. 53-113973 have been developed.

<Problems to be Solved by the Invention> However, 1: The above-mentioned conventional technology has a wider variety of patterns for collecting test piece materials than coupons, is difficult to deal with changes in plate thickness, material, etc., and requires complicated equipment. Therefore, automation was difficult. Furthermore, it is difficult to organize a series of processes including loading of coupons, sorting of cut pieces, and unloading into a line, and a complicated conveyance line is required. In particular, when comparing the cutting length per coupon and the associated cutting time with the coupon processing cycle time,
Since the cutting time was too long, the cutting process was divided into branches, lines were branched and merged, and the line configuration became complicated. Conventionally, the flow of loading, multiple cutting processes, and unloading involves moving the workpiece in a straight line, and the net machining involves positioning or detecting the position of the workpiece each time it is moved. Requires unrelated set-up work and equipment,
In addition, there are problems in that the control becomes complicated and the entire device becomes extremely expensive.

The problems that the present invention aims to solve include the above-mentioned problems in measuring the test piece material from the coupon, and in particular,
Adjusting the coupon loading cycle time to the coupon loading, cutting, and unloading cycle time, eliminating the selection of cutting torches and tinder for changes in plate thickness and material, and the associated time, v3I! It is possible to respond immediately to the diversity of IT patterns, and when transporting the workpiece between the above-mentioned divided processes, positioning or position detection of the workpiece can be done only once, eliminating extra additional time and equipment. This method fundamentally solves the above problems, and also provides a completely new technology that streamlines the sorting of cut pieces by purpose and takes into account the inaccuracy of coupon dimensions.

Means for Solving the Problems> The present invention is a completely new invention that can fundamentally solve the above-mentioned conventional problems. This technology makes it possible to efficiently cut test piece materials in a short time using a simple device.

The method is to load coupons, which are the materials to be cut, onto a horizontally rotating turntable, divide the rotation angle of the turntable into equal parts according to the number of processes, and configure several work stations. A method and apparatus for fusing and sorting steel plates, characterized in that each station after the second station is provided with a cutting device capable of cutting test piece materials from the coupons.

As described above, according to the method of the present invention, processes such as loading the material, setting it in the correct position, cutting, and dispensing the product can be carried out at separate locations without being bothered by other processes. During cutting, additional setup work such as loading and unloading is performed, so these setup tasks are not included in the work time, and are treated as so-called "outside" work. can significantly improve efficiency. In addition, since the work in each process is specialized and there is no need to worry about other processes, mechanization and automation are easy. Furthermore, since the movement of materials between processes is limited to the turntable, there is no need for a complicated conveyor line, and great benefits can be obtained in terms of equipment costs and maintenance. Furthermore, if the number of processes on the turntable is increased in advance in response to an increase in production volume and used as a pre-processing station, it will be possible to accommodate future expansions and replacement of equipment for each process as technology advances. In addition, it is also possible to install the new part while the old part is in operation.

<Example> FIG. 1 shows an example according to the present invention. In the figure, 1 indicates a horizontal turntable, 2 indicates the rotation axis of the turntable, and the arrow indicates the rotation direction.6 In this embodiment, the rotation angle is O' (3f (Oo) 60 degrees, 120°, 1
It is divided into 6 stations of 80°, 240°, and 300°, and each workstation is indicated by ■, ■, ■, ■, ■.In the above example, the angle was divided by 60°, but If the angle is 72°, there will be 5 stations, and if it is 45°, there will be 8 stations, and the indexing angle can be arbitrarily determined according to the number of processes. At the workstation, the coupons are loaded onto the turntable, set in a fixed position, and the dimensions of the coupons are measured, but the loading process may be further subdivided and the workstation divided. are coupons, which are covered one after another at the steel rolling line. This coupon 3 is guided to the front of the workstation (2) by a suitable conveyor or carriage 4 capable of conveying the coupon 3 to the apparatus, which is a pre-processing step of the apparatus of the present invention. 5 is a crane-type loading device for loading coupons 3 onto a turntable L as an example, and shows a loading method using a magnet as a hanging device, but there are other loading methods such as an air cylinder etc. A push-in method etc. can also be adopted. Reference numeral 6 denotes a coupon positioning device fixedly placed on the floor, which serves as a reference guide for the position of one piece of the coupon 3 (for example, defined as the X coordinate axis), and is perpendicular to the X-axis positioning cylinder 7 and the x-sleeve. Hold the cylinder 8 for positioning in the X-axis direction, determine the stroke of the cylinder based on the signal from the encoder detector 9, and detect the exact dimensions and position of the coupon 3 on the turntable 1 when the positioning is completed. This is what I did. 10
is a stopper for positioning the coupon 3 provided on the turntable 1, and serves as a reference for the stopping position when the coupon 3 is pushed into the turntable 1 by the X positioning cylinder 7. Reference numeral 11 denotes a clamp device attached to the stopper 10, which is provided to securely grip the coupon 3. 12, the receiver is a device,
are provided concentrically along the outside of the turntable 1,
It is configured to prevent the coupon 3 from being cantilevered and to always support the coupon 3 horizontally. 3a shows the coupons loaded on the turntable at station (1), and (2), (2), and (2)Φφ- are cutting stations, respectively, and there are three stations in this embodiment. However, the number of these cutting stations can be freely selected depending on the cycle time of the device. ■ is the pre-processing station j),
3b, 3c, 3d... are these stations■,■
, . . . . Indicates the coupon 3 to be cut at the station. 13 to 1 particularly show a cutting machine and a torch that can control three orthogonal three-dimensional axes consisting of the X-axis, y-axis, and Z-axis, respectively, as shown in FIG. 1CB).

Of these, 13 indicates a rail or sliding surface that serves as a guide for the X-axis on a plane, 14 indicates a traveling saddle that runs along the rail 13, and 15 indicates a cross rail provided on the saddle that serves as a guide for the y-axis. Structure: 1B is a y-axis traveling block, 17 is a torch block 18 holding a plurality of cutting torches, which is driven vertically (two axes) to automatically set the height of the torch relative to the thickness of the coupon 3. This embodiment shows a torch up-and-down mechanism designed to obtain (x+y).This embodiment shows a system of x- and y-axis control of rail running and two-axis control of torch up and down.

2) Position control in the orthogonal three-dimensional space is possible even with a body structure such as that seen in arm-type robots, and
Since the cutting shapes are limited, it is also possible to input and memorize the trajectory of the torch for each cutting pattern by numerical control or teaching, and playback depending on the type of pattern to perform the cutting. If the objects to be cut at stations ■, ■, and ■ were limited in the method, the test piece material cut from coupon 3 would fall on the spot and be sorted by purpose. In the figure, reference numeral 18 indicates a sorting conveyor that carries out the cut test piece materials at each station. ■Station is the last station,■,■
, (2) The scrap remaining at the station can be discharged to the outside by a scrap conveyor 20. The device in FIG. 2 shows another embodiment slightly different from that in FIG. 1. In the embodiment in FIG. 1, the coupon 3 is clamped and fixed to the turntable 1,
The figure shows this turntable 1 on the outer periphery of turntable 1.
A cutting surface plate 21 which rotates together with the cutting plate 21 is provided and the coupon 3 is loaded thereon. ■The station is a station where cut piece materials and scraps are carried out. In the method shown in Fig. 1, the coupon is held by a clamp, and the pieces separated by cutting are separated on the spot, and only the scraps are discharged at the ■ station, but in the method shown in Fig. 2, The cut piece material 24 is cut according to the cutting pattern! Since it remains above A21 (x
, y + z), which can be controlled in accordance with orthogonal coordinates, to pick and move the materials to a designated sorting and unloading conveyor. 22 had a drive mechanism similar to that previously described for the cutting machine (x, y,
z) The unloader device is driven by orthogonal coordinate values, and an electromagnet or the like is used as a lifting device for picking. 23a,
No. 23bφe is a conveyor line for discharging cut pieces 24 classified by type. ■As shown in Figure 2 (B), the cutting machine at the station is (x +
y, Z) in another embodiment taken for coordinate control,
15' is a y-axis drive guide, 1B' is a y-axis drive blower, 17' is a column structure fixed on a block 16' that serves as a guide for the z-axis, and 13' is a column structure 17' that moves up and down zm. It is a blower for positioning, and is configured so that X-axis control can be performed by moving an arm 14', which supports a torch blower 18' at its tip, back and forth.

Fig. 3 is a diagram explaining the concept of a coupon for collecting test piece materials generated in the rolling process of a steel mill.
The waste is classified and discharged for each test purpose.
Although the patterns for testing test piece materials have been standardized, they are roughly classified into 50 to 200 patterns for each board thickness.

The test pieces are divided into several types, such as those for tensile tests and those for Charpy impact tests, and after being melt-cut by the apparatus of the present invention, they are further processed into predetermined test pieces by machining. In Figure 3, 24 is the test piece material, 25
is a part called surplus material or leftover material, which is kept for remanufacturing test pieces, chemical analysis, and other irregular test piece materials. 26 is the last scrap portion left. Coupon dimensions are generally rectangular;
The accuracy is extremely poor, and the dimension shown as 29m in the figure has an error of plus or minus several tens of millimeters. Further, in the figure, a dotted line 27 indicates a cutting line, but if, for example, 24 and 25 are separated at separate stations, cutting and sorting can be performed at the same time in the example of FIG. 1. In the method shown in FIG. 2, each piece 24 maintains the positional relationship of the original pattern, so that sorting can be performed based on positional coordinates. In particular, the parts with different symbols from those in FIG. 1 are the parts that have different configurations between FIG. 1 and FIG. 2, and the other same symbols are the same as in FIG. 1. 21 in Figure 2
1 shows a concentric solid lattice-type cutting surface plate provided around the outer periphery of the turntable 1, which loads coupons, supports the load, and allows cutting sparks to escape downward during cutting. At station (2), there is a loading device 5, positioning devices 6 to 8, a detector 9 using an encoder, and a stopper 10 for positioning the X coordinate of the coupon on the turntable.
It becomes more. ■, ■... At the station, cutting machines 13 to 18. 13' to 18' divide the cutting vR range and cut the test piece material 24, etc. at the cutting line (
x, y) The dimensional accuracy indicated by Q + m in the 0 diagram defined by orthogonal coordinates usually has an error of plus or minus several tens of mra, so the origin of the coordinate definition of the cutting line is the corner on the reporting side. is the origin, its negative half is the main (temporarily the X-axis), and the other is the subordinate (y-axis). Figure 4 shows an example of the order in which the printed coupons are cut.
...φ(7) is a model of the cutting order (1)
are the factors of the coupon before cutting, the dotted line in the figure is the cutting line, and the solid line is the edge of the plate, a, b, c...f.

g indicates the order of the piece materials to be cut and grown, and if the order and classification of the pieces are specified in advance in the cutting program, it is possible to automatically distribute and pay out the pieces according to destination. For example, it is possible to plan to cut a, b, and c first at the turntable and station H, and then cut d, e, and f in a later process. If it is necessary to make 3 steps, place 3 cutting machines against the turntable and, for example, cut a and b as the first cut.

c, d, and e can be planned as the second cut and f as the third cut to match the upstream line speed. Figure 5 explains the relationship between the uneven dimensions of the coupon and the coordinates as the position moves. It is a diagram. Originally, the coverage and processing lines of the piece on the coupon are collectively defined by the board thickness, material, and pattern type, but the pattern type has its origin on the coupon plane (
X.

The board thickness determines the 2° coordinate that controls the height of the torch in the cutting process, and the information for cutting, carrying out, etc. is defined as (x, ).

y,,z,). On the other hand, in the method of the present invention,
In order to selectively use cutting torches according to changes in plate thickness and material, the CX6. 76
+26) coordinates are (Xl.

The coordinates are transformed to V++Z+). When this coupon is placed on the turntable, the drive of the cutting machine is controlled relative to the turntable, so the coordinate system is converted to (X2, y2, 22) with its origin on the turntable, and when performing the work, Coordinate transformation of 0 or more that operates according to the drive coordinate system (X, Y, Z) of cutting machines, unloading devices, etc. may seem complicated at first glance, but when coupons are mounted on a turntable, there are variations in the dimensional accuracy of the coupons. Except for the parts that require detection by an encoder, coordinate transformation can be performed as mechanical constants. Figure 5 shows the concept of the coordinate system explained above, and 28 in the figure is a single coupon. , 29 indicate the coupon when it is mounted on the turntable, O is the coupon material coordinate origin, and PI is the coordinate origin on the coupon of the coupon set on the turntable, which corresponds to O.

P2 is the coordinate origin on the turntable.

P2 is not constant due to uneven coupon dimensions and poor dimensional accuracy, and it is necessary to detect and correct positional information that has an origin on the coupon with respect to the origin P2 on the turntable as shown in Figures 1 and 2 above. This is as described in the embodiment. 13~
Reference numeral 18 denotes a working machine such as the cutting machine mentioned above in Figures 1 and 2, which is fixed relative to the turntable, and operates according to the coordinates on the turntable, but each machine has its own coordinate origin and coordinate axis. It will be driven with the (X, Y, Z) coordinates whose origin is Qi. This example is illustrated using three coordinate systems (X, .

”/, +Z, )+ (X2172 +22)l
(X+YIZ) are parallel or have one axis in common. This is due to the characteristic of the outer shape of the coupon, which is rectangular, but even if the coordinate axis system is tilted, it is only necessary to perform detection and perform Euler transformation of the mutual coordinate axis system. isn't it.

Figure 6 illustrates the process of processing and converting the digital information shown in Figure 5 in digital control.
0 is the process of creating digital data for processing, 31
32 indicates the function of the digital controller, 32 indicates the movement of the mechanical device, and the above processes indicate necessary processing steps, so there is no problem in changing the general division of 30° and 31.

<Effects of the Invention> Since the method and device according to the present invention have the above-described configuration and operation, they can rotate coupons that are taken one after another in a steel rolling line while responding to changes in material thickness, material quality, etc. While rotating along the table, the test piece material is cut extremely efficiently at several divided stations, the required test piece materials are collected one after another, and the numerous test piece materials that have been cut are further divided into sections. It has the following characteristics: it can be transported to a predetermined position, its overall structure is extremely simple and compact, and therefore the membrane space is small, and it can be mass-produced at low cost. be.

[Brief explanation of the drawing]

FIG. 1(A) is a simplified plan view of the device according to the present invention, FIG. 1(B) is an enlarged view of the main parts thereof, FIG. 2(A) is a simplified plan view of the device on the other side, FIG. (B) is a perspective explanatory view of the main parts;
Figures 3 and 4 are explanatory diagrams of how test piece material is collected from coupons, Figure 5 is an explanatory diagram showing the relationship between uneven dimensions of coupons and coordinates due to positional movement, and Figure 6 is an illustration of the relationship between coupon dimensions and coordinates as the position moves. FIG. 2 is a block diagram illustrating a process. Patent applicant Koike Sanso Kogyo Co., Ltd. Agent Patent attorney Shukichi Nakayo (Δ) Figure 2 Figure 3 xO Figure 4 (1) (2) (3) <4) Figure 5 Figure 6

Claims (10)

[Claims] (1) Coupons to be cut are loaded onto a horizontally rotating turntable, and the rotation angle of the turntable is equally divided according to the number of processes to form several work stations. A fusing and sorting device for steel plates, characterized in that a cutting device and a sorting device capable of cutting test piece materials from the coupons are provided at each station after the second station. (2) A cutting device is provided at each station after the second station, and a conveying device that can immediately individually convey the test piece materials cut by the cutting device is provided adjacent to the cutting device. A fusing and sorting device for steel plates according to claim 1. (3) When inserting a coupon into the first station, a fixed ruler that can guide the coupon independently of the turntable is provided, a stopper for positioning the coupon is provided on the turntable, and the coupon is inserted between the ruler and the stopper. 2. The steel plate melt cutting and sorting apparatus according to claim 1, further comprising a retracting device such as an air cylinder that can be pressed against the steel plate. (4) Load coupons as the material to be cut on a horizontally rotating turntable, divide the rotation angle of the turntable into equal parts according to the number of processes, and configure several work stations. A cutting device capable of cutting the test piece material from the coupon is provided at each station after the second station, and a device for carrying out the test piece material is provided at the last station. Steel plate fusing equipment. (5) Load coupons as the material to be cut onto a horizontally rotating turntable, divide the rotation angle of the turntable into equal parts according to the number of processes, and configure several work stations. A cutting device capable of cutting the test piece material from the coupon is provided at each station after the second station, and the coupon is held on a turntable by a clamping device such as an air cylinder. Fusing equipment for steel plates. (6) Load coupons to be cut on a horizontally rotating turntable, divide the rotation angle of the turntable into equal parts according to the number of processes, and configure several work stations. In an apparatus in which the coupon is loaded and positioned, each station after the second station is provided with a cutting device capable of cutting the test piece material from the coupon, and the last station is further provided with a device for carrying out the test piece material, A steel plate fusing device characterized in that the outer periphery of the turntable has a cutting grid-like surface plate structure on which coupons can be loaded. (7) Load coupons to be cut on a horizontally rotating turntable, divide the rotation angle of the turntable into equal parts according to the number of processes, and configure several work stations. In an apparatus in which each station after the second station is equipped with a cutting device that can cut the test piece material from the coupon, a turntable stop signal is sent to each work station according to the dividing angle of the turntable. A method for fusing and sorting steel plates, characterized in that the signal is used as a start signal for work. (8) A horizontally rotating turntable is loaded with coupons to be cut, and the rotation angle of the turntable is equally divided according to the number of processes to form several work stations. In an apparatus in which each station after the second station is equipped with a cutting device that can cut the test piece material from the coupon, the cutting machine at each station can handle changes in the thickness and material of the coupon. The size of the cutting nozzle is changed and multiple cutting torches are gripped, the nozzle is automatically selected, the positional relationship between one cutting torch as a reference and the other cutting torches is fixed, and the cutting machine is driven digitally. A method for fusing and sorting steel plates, characterized in that cutting is performed at the correct position on a coupon based on a predetermined cutting pattern through coordinate transformation of a control program. (9) A horizontally rotating turntable is loaded with coupons to be cut, and the rotation angle of the turntable is equally divided according to the number of processes to form several work stations. In an apparatus in which each station after the second station is equipped with a cutting device capable of cutting the test piece material from the coupon, the cutting stations are divided according to the classification of the test piece to be cut from the coupon. A method for fusing and sorting steel plates, characterized in that the cutting work station is arranged as an independent work station so that the cut pieces are sorted at the same time as they are cut. (10) Load coupons as the material to be cut on a horizontally rotating turntable, divide the rotation angle of the turntable into equal parts according to the number of processes, and configure several work stations. In an apparatus in which each station after the second station is equipped with a cutting device that can cut the test piece material from the coupon, the amount of linear movement of the retracting device of the first station is calculated by calculating the amount of linear movement of the rack, pinion, etc. The origin of the planar coordinate ruler of the processing line of the coupon is replaced with the coordinates on the turntable. A method for fusing and sorting steel plates, characterized in that the position information defined in the above is controlled by converting it into a coordinate system on a turntable.