DE2264099A1 - CUTTING DEVICE FOR LARGE PLATES - Google Patents

Description

DR. INO. E. HOFFMANN · DIPL. ING. W. EITLE · DK. HER. NAT. K. HOFFMANN

patent attorney

d-8000 munich 81 · arabellastrasse 4 · phone (0811) 911087

219

NIPPON KOKAN KABUSHIKI KAISHA, Tokyo / JAPAN

Cutting device for large panels

The invention relates to a cutting device for trimming the end faces or ends of large panels for production in parallel extending end faces, in particular a cutting device for cutting or trimming large panels, e.g. Outer skin or sealing plates used as blocks for ship hulls or sheets. This cutting device works with greater efficiency and accuracy.

It is already known to use a cutting machine (parallel cutting machine) To trim plate units in the longitudinal direction in parallel and then cut a plurality of the parallel trimmed Welding plate units together by means of one-sided welding to thereby produce a large plate of a desired size, for example for use on a ship's hull.

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The end faces of the large plate produced in this way are not straight or do not run parallel (see Fig. 4 of the drawing) and therefore it is common to use the uneven To cut areas of both faces of the plate by hand. In Fig. 4, the cutting lines are dashed indicated. The disadvantage with this, however, is that due to the fact that the trimming is in extreme inadequacy and is carried out by hand with insufficient parallel guidance of the cutting lines, the beneficial effect when aligning the Blocks on the slipway has a negative tendency.

The aim of the present invention is therefore to overcome these difficulties to fix and provide a cutting device for large panels with a pair of rails on each both sides of a conveyor, e.g. a roller conveyor for transporting large panels, i.e. close to both Ends of a large plate is provided. These rails can be rotated in one plane. There is also a deviation detector to determine the positional deviation of a large plate and a stop or. Retaining element between the ends of the rails (Stop line) arranged. A rotation detector is provided for each rail. A cutter mounted on each rail can move along the rail.

According to the invention, the above difficulties with the aid of the cutting device described at the beginning by cooperation its parts eliminated as follows:

A conveyor such as a roller conveyor for transporting a large plate; on each side of the conveyor a rotatable longitudinal rail, which according to the width the large panel is movable into a substantially perpendicular disposition to seams in the large panel; one means a motor or cutting device moving along a longitudinal rail; a Dct.ek provided with a differential converter

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gate for setting the degree of rotation of the longitudinal rails; a deviation detector with a large number of differential converters, which is provided on a stop line for stopping the large plate being conveyed and the positional deviation of the paused disk detects. This deviation detector, which detects the deviation of the large plate in the stopped position, determines the difference between the center line of the Conveyor and the center line of the large plate stopped thereon, so that at least one of the on both sides of the large plate provided rails in accordance with the observed deviation in relation to the width of the large Plate is moved. At the same time, both longitudinal rails are rotated to adjust their positions so that the rails are arranged substantially perpendicular to the seams in the large panel. Then the on both longitudinal rails provided cutting devices are set in motion along the rails to the end faces or ends of the large plate to prune.

Further details of the invention should be based on an exemplary embodiment will be explained and described in more detail, reference being made to the accompanying drawings.

Fig. 1 is a schematic plan view of the entire Construction of a cutting device according to the invention for large panels,

Fig. 2 is a front view of the device according to Fig. 1,

FIG. 3 is a partial section along line HI-III in FIG. 1 due to the swivel range in the middle of the fixed rail,

Fig. 4 is a partial section along line IV-IV in Fig. 1 and

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shows the pivoting range at each end of the attached rail,

5 is an enlarged view of the A section in Fig. 2 and shows the holding structure of the cutting device in detail,

Fig. 6 is an enlarged partial section on the line VI-VI in Fig. 1 and shows the pivot range at each End of movable rail,

7 is another enlarged partial section according to FIG Line VII-VII in Fig. 1 and shows the pivoting range at each end of the movable rail, and

Fig. 8 is a perspective view of a large plate which has been cut with the aid of the cutting device according to the invention can be pruned.

There is a large plate 1 which is to be processed by a cutting process with the aid of the device according to the invention from a plurality of plate units 2 previously cut out in separate methods and devices and were welded. In the case of such a large plate as e.g. according to Fig. 8, the longitudinal edges 5 and 4 can be uneven, which is why it is necessary to trim these edges 3 and 4 in order to cut the parallel edges 3 and 4 according to lines X and Y. than to make the cutting lines. For this purpose, the large plate 1 is transported via conveyors 5 and 6 such as rollers moved forward from the direction of the arrow shown in dashed lines of Fig. 1 and into an inventive large plate cutter introduced. In this case the center line is correct in this way in the device imported large plate 1 does not necessarily coincide with the center line of the conveyor. Consequently, the arrangement of the

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large plate tracked by a deviation detector explained later in such a way that longitudinal rails according to the detected deviation can be rotated. In the discussion below, the term "large slab" means a large one Steel plate, however, the present invention is not intended to be limited to a "steel plate". Any material used for Production of parallel edges must be trimmed, the cutting process by the device according to the invention be subjected. The terms "longitudinally" and "transversely" are also used to denote the longitudinal or transverse direction, respectively in Pig. 7 to designate.

The large plate 1 inserted into the large plate cutter is secured by a known stopper (not shown) arranged on a stop line 7. On one side of the conveyor 6 are essentially perpendicular to the same arranged cross rails 8, 9 and Io are provided, and tables 11, 12 and 15 which can be moved from side to side are provided each provided on the cross rails. A longitudinal rail 15 with cutting device 14 moving on it is on the Tables 11, 12 and 15 attached. Motors 16 and 17 are each provided for the tables 11 and 15 in such a way that the longitudinal rail 15 is moved by these motors in the drawing to the left or right on the cross rails 8, 9 and Io. To the Moving the longitudinal rail 15 to the left or right depending on the width of the introduced into the device by the conveyor large plate 1 it is necessary that the motors 16 and 17 are operated by a single operating switch be set, which is controlled by a (not shown) switchboard to the longitudinal rail 15 perfectly parallel the large plate 1 to move. In addition, the table 12 is provided with a shaft (explained later) for rotating the longitudinal rail

if
15 provided in the plane, so that ^ either motor 16 or 17 is operated to move the table 11 or 15 in the transverse direction,

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the longitudinal rail 15 clockwise or counterclockwise rotates in the plane, the bisection point 18 being the bearing point. The arrangement of the longitudinal rail 15 and the other, later to be explained longitudinal rail 35 are in the Construction of the cutting device has been matched to the center line of the latter, and therefore it is necessary to use the To adjust the arrangement of the longitudinal rail 15 and 35 so that they coincides with a large plate, which with a certain deviation from the center line of the cutting device in the latter was entered. In other words, the rotational movement of the longitudinal rails is large depending on the degree of deviation of the incoming Plate 1 made with respect to the center line of the conveyor, whereby the longitudinal slides are adjusted in this way that they are essentially perpendicular to the seams in the large plate 1 (shown in Pig. 8 at 19i 20 and 21). In this case, the transition from the lateral to the rotary movement of the longitudinal rails 15 is made by the control board (not shown) made out.

The longitudinal rail 35 is arranged on the other side (left in the drawing) of the conveyor device, so that, as with the longitudinal rail 15, a cutting device J> h can move along the longitudinal rail 35. The latter rail is attached to tables 31 and 33, which are able to move left and right on cross rails 38 and 39, so that when a motor 37 is actuated to move the table 33 or the table 31 is moved by a motor 36, the longitudinal rail 35 just as the longitudinal rail I5 is able to rotate clockwise or counterclockwise, a bisection point 32 forming the bearing. However, it must be noted that the longitudinal rail 35 is unable to move completely to the left or right according to the width of the large plate 1.

After the large plate I has been promoted and arranged between the longitudinal rails 15 and Zö, its further movement is in the right direction

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of the arrow drawn with dashed lines through the (not shown) Holding element stopped at the holding or stop line 7, whereby the large plate 1 comes to a standstill. At this point As a precaution, eats a detector 22 to detect the positional deviation the plate is arranged, at the ends of which two differential transducers 23 and 24 are attached, whereby when touched of the upper end of the large plate 1 with the Dlfferenzumwandler 23 and 24 the degree of deviation is determined and converted into electrical Tension is transformed. This detector 22 for detecting the deviation of the plate can also serve as a holding element, so that the abovementioned stop or holding element can be omitted.

Detectors 25 and 26 are near the center of the longitudinal rails

15 and 35 on the latter are provided to determine the degree of rail rotation ascertain. The detectors 25 and 26 for rail rotation are each provided with Dlfferenzumwandlern 27 and 28, which respectively the degree of rotation of the longitudinal rails 15 and 35 in convert electrical voltage. So either are the engines

16 and 36 or motors 17 and 37 in accordance with FIGS Differences of the difference converters 23 and 24 or 27 and 28 generated voltages operated. As a result, the longitudinal rails 15 and 35 are clockwise or counterclockwise moved until the deviations of the lines X and Y for cutting the large plate 1 from the lines of movement on which the Cutting devices 14 and 34 are directed, reduced to zero and the lines are parallel to each other.

The motors 16 and 36 or 17 and 37 stop rotating when the voltage differences have reached zero.

The invention will now be more detailed with reference to Figs explained. In Fig. 3 is a section through the central area the longitudinal rail 35 shown in detail. One attached to the lower end of the longitudinal rail 35 and extending downwards from it

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stretching rotary shaft 41 is fitted into a frame 4o which is firmly anchored to the ground. The rotary shaft 4l is provided with a plurality of bearings 42, 43, 44 and 45 which are respectively attached to their peripheral and end portions to facilitate the rotation of the shaft 41 in the frame 4o. The central area of another longitudinal rail 15 is constructed essentially according to FIG. 3, for which reason no more detailed explanation is given. Fig. 4 is a partial view of the pivoted end portion of the longitudinal rail 35 (ie, the area where the longitudinal rail 35 is connected to table 31 or 33) in which a shaft 47 formed integrally with the transverse rails J> b and 39 is fixed in one frame 46 anchored to the ground is rotatably mounted. When the longitudinal rail 35 is rotated clockwise or counterclockwise around the center point J2 as the bearing point, the transverse rails 38 and 39 also rotate with the shaft 47 as the bearing point, depending on the degree of rotation of the longitudinal rail 35.Similar to the construction according to FIG. 3, the bearings 4b and attached respectively to the sides and the end of the shaft 47 to facilitate the rotation of the latter. A V-shaped groove 5o extending in the longitudinal direction of the drawing and a V-shaped protrusion on the lower surface of the table 31 or 33 supporting the longitudinal rail 35 are made on the surface of the rail 31 or 33 integrally formed with the shaft 47 fits into the groove 5o. Thus, in response to the actuation of the motors 36 or 37, the table 31 or 33 * moves, with the V-shaped groove 50 serving as a guide, in the longitudinal direction of the drawing (to the left or right in FIG. 1). Reference numerals 51 and 53 denote bearings.

In Fig. 5 the holding structure for the cutting device is shown in more detail. The holding devices for the cutting devices 14 and 34 are constructed identically, which is why only the holding construction for the device 14 with reference to FIG. 5 is explained. This holding device includes a vertical

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movable rod 55 on which burners 54 are attached. The holding device 14 is carried by an arm 56. the Reference numeral 57 denotes a motor for moving the cutting device 14, which is mounted on a frame 58 of the arm 56 is firmly attached. The motor 57 rotates a gear 60 meshed with a rack 59. The rack 59 extends longitudinally on the upper surface of the longitudinal rail 15, so that the cutting device 14 can move along the longitudinal rail 15. The frame 56 is provided with rollers 60, 61, respectively and 62, 63, each being the ends of the longitudinal rail hold from above and below, so that the cutting device 14 can be moved along the rail 15 smoothly and without rattling can.

In Fig. 6 and 7 the substructure of the longitudinal rail I5 is shown, in particular the parts of the longitudinal rail 15 * which are connected to the transverse rails 8 and Io are connected. The construction of these areas is identical, which is why the description refers to the construction between the transverse rail and the longitudinal rail I5 is limited.

In the figures, the reference number 65 denotes a foundation firmly anchored to the ground, on which the transverse rail 8 is firmly attached. A rack 66 is securely attached to the cross rail 8 and is engaged by a gear 67 of the motor 16 which is attached to the table 11 so that the table 11 is moved to the left or right as shown in FIG. 6 in response to the movement of the motor l6. Rollers 68, 69, 70, 71, 72 and 73 are provided so that the table 11 moves smoothly. The ends of the cross rail 8 are also held between these rollers from above and below and from both sides. ^{A support 7 2} I- fastened to the lower end of the longitudinal rail I5 and in which a groove 75 with a right-angled cross section according to FIG. 6 is formed is held on the table 11. A roller 76 attached to the surface of the table 11 is disposed in the groove 75, whereby the table 11 is moved in the direction of the arrow shown in FIG. 7 when moving

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the longitudinal rail I5 rotates. Designated by the reference number 77 Bearings serve to reduce the friction between the support 74 and the table 11 during the rotational movement of the longitudinal rail

After describing the construction, the cutting process is then carried out explained by means of the device according to the invention.

When the large plate 1, which is moved on the conveyor device arranged between the longitudinal rails 15 and 35 (e.g. a disk
roller conveyor) * f is inserted into the cutting device, a further movement of the large plate 1 is stopped by a stop (not shown) arranged as a precaution on the stop line 7. Simultaneously with the stopping of the plate, the deviation of the position of the large plate (the deviation from the center line of the stopped large plate from the center line of the conveying element) is measured by means of the differential transducers 23 and 24 of the deviation detector 22 contacting the large plate 1, and the differential transducers 27 and 2 & of the rail rotation detectors 25 and 26-f As a result, the longitudinal rails 15 and 35 are adjusted so that they are perpendicular to the seams 19, 20 and 21 in the large panel.

Thereafter, the cutting devices 14 and 35 move along the longitudinal rails I5 and 35 *, respectively, so that the torches these cutting devices with mechanical accuracy and high efficiency the desired amount of material from the longitudinal ends remove the large plate 1 so that parallel edges are created. In this case, however, it is not necessary that the cutting devices 14 and 34 operated synchronously will.

From the above it can be seen that the cutting according to the invention

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device for large panels is designed so that the Deviation from the conveyor center line of a large slab inserted into the cutter is detected. The rails carrying the cutting devices are rotated according to the detected deviation, to adjust the rails so that they correspond to the detected deviation, so that the desired amount of material can be removed from both ends of the large plate by the cutters to produce parallel ends. There is the advantage that large plates of improved quality due to greatly improved parallel running Edges created v / ground. Furthermore, the efficiency is increased by the automatic processing.

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Claims (6)

Claims 1. Cutting device for trimming the front sides of large panels to produce parallel front sides, characterized in that the following parts are provided in the cutting device: a conveyor (5 * 6) such as a roller conveyor for transporting a large plate (1), one rotatable longitudinal rail on each side of the conveyor device (15 * 35), which according to the width of the large plate in a substantially perpendicular arrangement to seams (19 * 20,21) is movable in the large plate, one along by means of a motor (16, 17) or (56, 37) a cutting device (14,34) moving a longitudinal rail, a detector provided with a differential transducer (27,28) (25,26) for determining the degree of rotation of the longitudinal rails, a deviation detector (22) with a plurality of differential converters (23,24) which is provided on a stop line (7) for stopping the large plate being conveyed and which detects the positional deviation of the stopped plate. 2. Device according to claim 1, characterized in that at least one longitudinal rail (15 * 3 °) is a rotatable longitudinal rail which is movable in accordance with the width of the large plate (1) and substantially perpendicular to the seams (19 * 2o, 21 ) is to be arranged in the large plate. 3. Device according to claim 1, characterized in that at least one longitudinal rail (35) is attached to a plurality of tables (31 * 33) which 309833/0334 - 13 - long a plurality of transverse rails arranged substantially perpendicular to the cutting lines of the plate (1) (3δ, 39) are movable, and that a longitudinal rail (35) is attached to the lower surface of the central region of this one Shaft (41) is rotatably received in one of the movable tables. 4. Apparatus according to claim 1, characterized in that on the lower surface of the central region at least one of the longitudinal rails (35) has a shaft (41) attached and rotatably received in a stationary frame (4o) is, the ends of this one rail on a table movably attached to a cross rail (38,39) (31 j33) held and the cross rails in one piece with an in a stationary frame (46) rotatably received shaft (47) are formed. 5 · Device according to claim 4, characterized in that the cross rail (3 &, 39) with the from its lower surface extending shaft (47) has a V-groove (5o) formed on its upper surface, and that the table (31 * 33) attached to the cross rail on its lower surface provided with a V-shaped projection (5I) and through the interposition of bearings (52,53) on the cross rail is movable, the V-shaped groove serving as a guide. 6. Apparatus according to claim 1, characterized in that the cutting device (14) means an arm (56) is attached to a frame (5 &) on which a plurality of rollers (61,62,63,64) are arranged and between them the ends of the longitudinal rail (15) from above and hold down that a gear (60) with a rack (59) meshes which on the surface of the longitudinal rail is arranged and extends longitudinally along the latter, and that a motor (57) for rotating the gear 309833 / 0'3 3A ORIGINAL INSPECTED - 14 - 22S4099 is provided. 7 · Device according to claim 1, characterized by conversion of the deviation detector (22) for detecting and determining the positional deviation of the large plate (1) and of the rotation detectors (25,26) determined values in electrical voltages and rotation of the longitudinal rails (15,35) to reduce the difference between the electrical positions to zero. 309833 / Ü334 Ας Blank page