JPS62230423A - Multiple continuous straightening device - Google Patents

Abstract

PURPOSE:To surely and efficiently perform straightening of a longitudinal material after welding, by providing plural driven roller units and driving roller units on an upper part and a lower part of a gate frame respectively, and moving the driven rollers and the driving rollers in the transversal direction corresponding to a longitudinal base of a material to be straightened. CONSTITUTION:Pinions 5d, 6c are rotated corresponding to the longitudinal base of the plate block wherein plural longitudinal materials 2 are welded on a steel plate 1 to adjust the interval of the driving roller 6 and the driven rollers 5a, 5b to the longitudinal base. After this positioning, the plate block with the longitudinal material 2 on its upper side is conveyed by a roller conveyer 17. Then, against the driving roller 6a positioned just under the longitudinal material 2 of the plate block, a hydraulic jack 5e of driven roller unit 5 is operated to descend plural driven rollers 5a, 5b successively to perform the rolling reduction of the both sides of the longitudinal material 2 and to straighten plural stripes of strains continuously while sending out the plate block.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a device for correcting distortion of flat plate blocks, etc., which is applied to the hull structure of various heavy-duty ships.

<Prior art> The basic work of block assembly, which is to attach aggregate in the longitudinal direction to reinforce steel plates, involves joining the plates and marking them, then distributing and positioning the longitudinal materials. , tacking, and welding, and each step relied on manual labor. However, recently, with the aim of improving economic efficiency, as shown in Figure 4, multiple steel sheets, usually three
~The medium-assembled veneer construction method, in which five longitudinal members 2 are mounted in multiple rows at the same time, is fillet welded at the beginning and then joined by plates, has been adopted. Note that FIG. 4 shows a flat plate block constituting the general shell block, and the steel plate 1 is a flat steel plate (panel). However, when three to five longitudinal members 2 are fillet welded to the collar plate 1 at the same time, due to the influence of the welding, the steel plate 1 becomes wavy with the arrangement interval of the longitudinal members 2 as shown in Fig. 5.
′: Distortion occurs. No. sr! ! i is A-AI in the 4th @
This is a section II. Conventionally, as a method to correct this distortion, ■
After longitudinally welding the flat plate block with a crane, the surface of the steel plate 1 is heated with a gas burner 3 as shown in Figure 7.
There were methods such as linear heating of each strip to remove distortion, and reverse construction methods (explanation will be omitted).

<Problems to be solved by the invention> In the conventional HD straightening method such as the above-mentioned ■■, multiple longitudinal members 2 of 3 to 5 strips are attached to a flat plate block, so it is difficult to straighten the longitudinal members 2, and it is difficult to correct the distortion. In some cases, flat blocks are transported to the primary process without being completely removed.

If the distortion correction is insufficient in this way, the next process is board joining,
It becomes very difficult to assemble large block joints in a large assembly, and it also becomes a hindrance in terms of quality improvement.

In addition, with the aim of improving economic efficiency, by adopting a construction method in which multiple longitudinal members are simultaneously connected in advance (Ps) and then joined together, the distortion correction after welding the longitudinal members can be done reliably and efficiently. There is a strong demand for technology that allows for good construction.

The present invention eliminates the above-mentioned problems and improves mtR after welding longitudinal materials! It is an object of the present invention to provide a multi-equipment continuous strain correction system that can be effectively and efficiently performed.

Means for Solving Problems〉 The structure of the present invention for achieving the above object includes a driven roller in which a hydraulic jack for lowering a plurality of driven rollers is provided on the upper part of a rigid portal frame so as to be able to move laterally. A plurality of units are configured, and a plurality of Wjl moving roller units are configured in which a Wj first-duty roller that sends the material to be straightened to the lower part of the gate-shaped frame is provided in a horizontally movable manner, and the driven and It is characterized by moving the drive roller laterally to correct distortions in multiple locations at the same time.

Tsuki Kusaku〉 The material to be straightened with the welded longitudinal material on top is transported by roller conveyors installed before and after the multi-layer continuous layer straightening device.
When it is fed between the driven roller and the drive roller, the drive roller located directly below the longitudinal material and the driven rollers located on the left and right sides of the longitudinal material press the vicinity of the welded part of the longitudinal material, correcting the distortion. That will happen.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

An embodiment of the present invention is shown in FIGS. 1 to 3.

As shown in the figure, the gate-shaped frame 4 is erected on the pace 16 with a lower support member 15 interposed therebetween, and a plurality of driven roller units 5 are mounted on the upper part of the gate-shaped frame 4, and a plurality of driven roller units 5 are mounted on the lower part of the gate-shaped frame 4. A drive roller unit 6 is provided respectively. That is, the frame 5g is placed on the top of the gate-shaped frame 4.
is applied to the lateral movement guide 12 in the lateral direction, that is, the 1st rI! J and the lateral movement guide 1 which is slidably fitted to the left and right in FIG.
A pinion 5d that meshes with a rack 8 disposed on the rack 2 is provided on the frame 5g, and the pinion 5d is driven by a motor 5C.

Therefore, by rotating the pinion 5d by the motor 5c,
When engaged with the rack 8, the frame 5g moves laterally along the lateral movement guide 12. Each frame 5g has a hydraulic jack 5e mounted on the tower side that moves the lifting moon guide 5f up and down using the lifting guide reinforcing side plate 14 as a guide, and large and small driven rollers 5a and 5b are attached to this lifting guide 5E. . The large-diameter driven rollers 5m are attached to the left and right sides of the longitudinal members 2a and 2b, as shown in FIG. Two cans are attached to the front and rear of the driven roller 5a at a distance of 4'J from the driven roller 5a to the bearing members 2a and 2b. Therefore, the lifting guide 5f and the driven rollers 5a, 5b can be lowered by the hydraulic jack 5e.

On the other hand, in the lower part of the gate-shaped frame 4, similarly to the above, a frame 6e is fitted to the lateral movement guide 13 so as to be slidable in the lateral direction, and a frame 6e is attached to the rack 9 disposed on the lateral movement guide 13. The pinion 6C is engaged with the pinion 6C, and the pinion 6C is driven by the motor 6b. Therefore, when the pinion 6c is rotated by the motor 6b and meshed with the rack 9, the structure moving guide 1
3 in the horizontal direction. each frame 6
A drive roller 6a is attached to the drive roller 8 so as to be located directly below the longitudinal members 2m and 2b, and a rotation transmission shaft 11 that is disposed laterally through the plurality of frames 6e and the drive roller 6a passes through the drive roller 6a. The rotation transmission shaft 11 has a bearing 6 on the frame 6e.
It is rotatably supported via the drive gfh roller 6a, and is fitted to the driving gfh roller 6a so as to be movable in the axial direction and unmoved. Therefore, when the rotation transmission shaft 11 is rotated by the motor 10, the plurality of drive p-rails 6a fitted on it are rotated at the same time 9, and when the frame 6e is moved laterally, this Accordingly, the plurality of drive rollers 6a also move in the stacking direction.

Further, on the left side of the gate-shaped frame 4 in FIG.
In addition, a button roller 18 is provided on the right side of the gate-shaped frame 4 in the figure. The reference roller 7 is fixed in position and comes into contact with the side end surface of the steel plate 1, while the butcher roller 18 is movable left and right in FIG. ing.

In addition, a roller conveyor 17 is provided in front of the gate-shaped frame 4 (left and right in FIG. 3) for conveying flat blocks, and the roller conveyor 17 is synchronized with the drive roller 6a as shown in FIG. It is designed to move in the middle, left and right directions.

The multiple continuous strain correction device of this embodiment having the above configuration is used as follows.

First, in the pre-process, a plurality of longitudinal members 2 are placed on a flat steel plate 1.
are welded to form a flat block, and the longitudinal space lG shown in FIG. 4 is determined in advance. Next, the plurality of driven rollers 5a, 5b and the driving roller 6a are moved in correspondence with the longitudinal space I to make them vertically symmetrical. That is, the reference roller 7
Lateral transfer using any position on each side as the base point! After setting the starting point for determining the final position, converting the previously grasped longitudinal space j into an electric signal etc., the motors 5c and 6b move the pinion 5d,
6c is driven and rotated, and the distance between the g-movement roller 6a and the driven rollers 5a and 5b is adjusted to the longitudinal space j as shown in the first rEi. Note that the method for positioning each roller unit 5, 6 is not limited to electric signals or power drive, etc.
Furthermore, it should be possible to easily move it to a predetermined position by a manual positioning method without using motors 5a, 6b, etc.

Subsequently, as shown in FIG.
p 5 b &hi WjX'h a Transport to the position of -56a. At this time, the flat block is urged toward the reference roller 7 by the butcher roller 18. Followed roller 5a.

The distance between the longitudinal material position of the flat block transported below the position 5b and the drive roller 6m and the driven rollers 5a and 5b that were previously positioned can be easily determined using a visual inspection, a gauge, or an electric sensor. Detectable.

Furthermore, the hydraulic jack 5e is operated to drive the drive roller 6a located directly below the longitudinal material 2 of the flat block, and a plurality of driven rollers 5m are moved.

5b4! The longitudinal material 2 is lowered one after another on both the left and right sides, and when a predetermined pressure is reached, it is stopped and the motor lO is turned off.
is started to drive and rotate each WX drive roller a, and the front and rear conveyors 17 synchronized therewith send out the flat block. As a result, the distortions of the plurality of stripes in the flat plate block are simultaneously and continuously corrected, and the steel plate becomes flat as shown in FIG.

In particular, in this embodiment, large and small driven rollers 5a.

5b, it is possible to cope with the height of the longitudinal members 2a and 2b. That is, as shown in FIG. 8, the low longitudinal material 2b is usually welded to a thin steel plate, and since distortion occurs from the root of the longitudinal material 2b, in order to effectively correct this distortion, Small-diameter slave holes 5b are arranged close to both sides of the longitudinal material 2b. On the other hand, in the case of a tall longitudinal material 2a, as shown in FIG. 9, since a thick plate is usually used as the flange plate 1, distortion is likely to occur at a position a certain distance aS from the longitudinal material 2a. Therefore, the large diameter driven roller 5a is arranged outside the small diameter driven roller 5b to effectively correct the distortion. In other words, the length is 2m.

Distortion can be effectively corrected regardless of the high or low level of 2b.

Furthermore, since the plurality of drive rollers 6a can be rotated by a single drive source (motor 10) via the rotation transmission shaft 11, compared to the case where a drive source is provided for each hook drive roller,
Drive roller units do not interfere with each other, the minimum longitudinal space I is reduced, and versatility is expanded.

Furthermore, maintenance is easier and costs are lower than in the case where the hook drive roller unit is provided with a motor, chain, etc. as a drive source. Another advantage is that each drive roller rotates smoothly in synchronization.

<Effects of the Invention> As described above in detail based on the examples, according to the present invention, distortion correction of a flat plate block can be performed by heating multiple longitudinal strips one by one in a linear manner, compared to the conventional technology. It is efficient because welding distortion can be corrected all at once and continuously. Also,
Since the material to be straightened is straightened by pressing down the driven roller against the drive roller, distortion removal is ensured. Furthermore, since the device of the present invention can be used to correct distortions in multiple strips of a flat plate block at once and continuously, assembly of the flat plate block from material placement to welding to distortion correction can be performed by one-man control using a tact system. This makes it possible to greatly improve efficiency. In addition, since distortion at the flat block stage is almost eliminated, work in subsequent processes becomes easier and the number of man-hours can be reduced.

[Brief explanation of drawings]

Fig. 1 is a positive view of a multiple continuous strain correction device according to an embodiment of the present invention, Fig. 2rM is an enlarged view of part A surrounded by a two-dot chain line in Fig. A partially broken enlarged side view, Figure 4 is a perspective view of the flat block before distortion correction, and Figure 5 is the
A cross-sectional view taken along the line B-B in the figure, Figure 6 is a cross-sectional view of a flat block after strain correction by this device, Figure 7 is an explanatory diagram of strain correction by the conventional linear heating method, and Figure 8 is a small diameter A convenient explanatory diagram of the driven roller, Fig. 9 is a usage guide for the large-diameter driven roller F'A.
It is @. In the drawings, l is a steel plate, 2 is a longitudinal material, 3 is a gas burner, 4 is a gate-shaped frame, 5 is a driven rattan unit 1, 5a, 5b are driven rollers, 5a, 6b, 1G are motors, 5d, 6c are pinions , 5e is a hydraulic jack, 5f is a lifting guide, 5g, 6a are frames, 6 is a drive roller unit, 6a is a drive roller, 6d is a bearing, 7 is a reference roller, 8.9 is a rack, 11 is a rotation transmission shaft, Reference numerals 12 and 13 designate a lateral movement guide, 14 a lifting guide reinforcing side plate, 15 a lower support member, 16 a base, 17 a roller conveyor, and 18 a butcher roller.

Claims (1)

[Claims] A plurality of driven roller units are arranged on the upper part of a rigid gate-shaped frame, and a hydraulic jack that lowers a plurality of driven rollers is provided so as to be able to move laterally, and a drive roller that sends the material to be straightened to the lower part of the gate-shaped frame is moved laterally. A multiple system comprising a plurality of freely disposed drive roller units, and the driven and drive rollers are moved laterally in accordance with the longitudinal space of the material to be straightened to correct distortions at a plurality of locations at the same time. Continuous strain correction device.