JPH0741436B2 - Rib welding equipment for flat plates - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rib welding apparatus for a flat plate steel sheet with ribs used for a box structure material used as a strength member of a building or a bridge or a plate girder.

[0002]

2. Description of the Related Art Conventionally, in the case of forming a flat plate steel sheet with ribs used for a box structure material, a girder, etc., the rib material is temporarily fixed and fixed to the flat plate steel sheet, and the flat plate steel sheet and the welding device are welded while being relatively moved. As a result, the rib material was welded and fixed to the flat steel plate. By the way, it is generally well known that welding distortion occurs due to shrinkage of the weld metal when welding, and when a rib material is welded to a flat steel plate, the warpage occurs when the steel plate parts on both sides of the rib material are lifted. The flatness will be lost. Therefore, conventionally, the distortion caused by rib welding has been corrected by a correction press or the like.

[0003]

However, since a large number of rib members are arranged on the flat steel plate used for the box structure material, the plate girder, etc., the correction work in the correction press etc. is troublesome. was there. It is an object of the present invention to provide a welding device capable of forming a flat plate steel plate with ribs in a state in which straightening work after welding is unnecessary or can be straightened easily.

[0004]

To SUMMARY OF THE INVENTION To achieve the above object, the present invention is constituted by the work support unit arranged at least 1 group along the platen for supporting the follower over click to the running rail, this work The support unit is composed of a work transfer device, a work holding device, a work lateral movement device, and a work lifting device, and the work transfer device of the work support unit is composed of a roller conveyor that can be driven to roll. The work lateral movement device and the work holding device are respectively positioned at the front and rear parts in the transport direction of the device, and the work lifting device is arranged in the substantially central part of the work transfer device, and the work lateral movement device and the work holding device are arranged. It is configured to be movable up and down, and the work lifting device is composed of a lifting mechanism and a workpiece back surface contact jig fixed to the upper end of this lifting mechanism. It is characterized in that the central portion of the upper surface in the work width direction is formed in a curved surface convex on projecting.

[0005]

According to the present invention, the work supporting unit for supporting the work is constituted by the work transfer device, the work holding device, the work lateral moving device and the work lifting device, and the work supporting unit is arranged along the traveling rail. At least one unit is arranged to form a surface plate, and the work transfer device of the work support unit is composed of a roller conveyor capable of rolling drive, and a work lateral transfer device and a work are provided at front and rear portions in the transfer direction of the work transfer device, respectively. The work holding device is positioned, and the work lifting device is arranged almost in the center of the work transfer device.The work lateral moving device and the work holding device are configured to be movable up and down. It is composed of a work back surface contact jig fixed to the upper end of the mechanism. Since it is formed with a convex curved surface, after loading the flat plate steel plate (work) to which the ribs are temporarily attached, the work lateral moving device is operated with the work lateral moving device and the work holding device driven upward to carry in. While aligning the center of the formed work with the center of the work transfer device, the work lateral moving device and the work holding device are driven downward while holding both side edges of the work with the work holding device to move the work. By fixing at a predetermined position and pushing up the work back surface contact jig formed on the upper surface with its upper surface protruding in the workpiece width direction and having a convex curved surface,
The work is bent at a predetermined position so as to be convex upward and is held securely.

Further, according to the present invention, the surface plate for holding the work is constituted by one or more work supporting units, and each work supporting unit includes a work transfer device, a work holding device, and
Since it is composed of a work lateral movement device and a work lifting device, the work length to be processed can be dealt with by increasing or decreasing the number of work support units. It is sufficient to install the support unit, and the delivery time can be shortened.

[0007]

1 is a perspective view showing a schematic structure of a rib welding apparatus, FIG. 2 is a perspective view of a work support base, and FIG. 3 is a plan view of a work support base. 4 is a sectional view taken along line IV-IV of FIG. 3, and FIG. 5 is a front view of the work holding device.

This rib welding device for a flat plate is a flat steel plate.
A platen (3) for supporting a work (W), which is made by temporarily attaching a rib material (2) to (1), and guided by rails (4) arranged on both left and right sides of this platen (3), to run. Gate type frame (5) and welder unit (6) mounted on the gate type frame (5)
It consists of and.

A surface plate (3) for supporting the work (W) is composed of a work supporting unit (7) arranged along the traveling rail (4). This work support unit (7) is a work transfer device (8) composed of a roller conveyor, a work holding device (9) for fixing the work (W), and a center line of the loaded work (W) as a work support unit. Work lateral movement device (10) to match the center line at (7) and work as described later.
(W) is constituted by a work pushing-up device (11) for bending and deforming it so as to be convex upward.

As shown in FIGS. 2 and 3, the work transfer device (8) has conveyor rollers (12) arranged in three rows in the width direction.
And a rotation drive system (13) for rotating and driving each conveyor roller in each conveyor roller row, and an electric motor for driving (14)
It consists of and. Then, the driving electric motor (14) is driven by a leading edge detection tool (not shown) such as a limit switch detecting that the leading edge portion of the loaded work (W) has reached a predetermined position. The operation of the electric motor (14) is controlled to stop.

The work lateral movement device (10) is a work transfer device.
They are arranged on the front and rear sides of (8) in a state orthogonal to the work transfer direction, and a large number of rolling rollers (15) are arranged in a line in a state orthogonal to the conveyor roller line in the work transfer device (8) It is arranged and configured. The roller row of this work lateral movement device is configured to move up and down by the operation of a lifting drive device (not shown).

A work holding device (9) is arranged so as to straddle the work lateral movement device (10). This work holding device (9) is, as shown in FIG. 5, a work lateral movement device (1
(0) is composed of a pair of left and right traveling carriages (17) and work holding claws (18) fixed to the traveling carriages (17), and the work lateral movement device (10) is raised. By moving the traveling carriage (17) in and out of the state, the center line of the work (W) is moved along the center line of the work (W) by pressing both side edge portions of the work (W) that are in contact with the left and right work holding claws (18). It can be aligned with the center line of the support unit (7).

As shown in FIG. 4, the work lifting device (11) is arranged at the central portion in the front-rear direction of the central roller row of the work transfer device (8). A hydraulic cylinder (elevating mechanism) (20) fixed to the base (19) in an upright position, and a workpiece rear surface abutment treatment that is fixed to the upper end of the retractable rod of this hydraulic cylinder (20) and has a horizontally long rectangular shape in plan view. Tool (2
1) and a linear movement guide (22) mounted between the work back surface contact jig (21) and the base (19). Then, the work back surface contact jig (21) is arranged such that the longitudinal direction is the work transfer device (8).
Are arranged so as to be orthogonal to the moving direction of, and the upper surface thereof is formed as a convex curved surface with an axis parallel to the workpiece conveying direction as the center.

The work supporting units (7) are arranged in series according to the length of the works (W) to be processed by a user such as an iron factory.
A work lateral movement device (10) and a work holding device (9) are additionally used at the most downstream portion in the transport direction. In this way, the surface plate for supporting the work (W) is formed into a plurality of work supporting units (7).
By forming the above, the long work (W) can be held at appropriate intervals, and the deforming biasing force that bends the work upwardly can be applied at appropriate intervals. Therefore, the entire long work can be curved uniformly.

Next, a rib welding procedure for a flat plate using the above-mentioned work supporting base will be described. The flat plate steel plate (1) to which the rib material (2) is temporarily attached is carried into the surface plate (3) configured by connecting the work supporting unit (7) using a work conveying means such as a roller conveyor. At this time, the work lateral movement device (10)
And the work lifting device (11) are in the descending posture,
The work (W) is the conveyor roller (12) of the work transfer device (8).
It will be transferred smoothly. Work carried in (W)
When the tip of the workpiece reaches the specified position, the work transfer device (8)
The driving electric motor (14) is stopped, and the loading of the work (W) is completed.

When the work (W) is fed to a predetermined position and stopped, the work lateral moving device (10) moves upward to move the work (W).
The rolling roller (15) of the work lateral movement device (10) abuts on the back surface of (W) to lift the work (W) from the upper surface of the conveyor roller (12) of the work transfer device (8), ) Is supported by the rolling rollers (15) of the work lateral movement device (10). Then, the work (W) is transferred to the rolling roller of the lateral movement device (10).
While being supported by (15), the traveling carriage (17) of the work holding device (9) is moved closer, and the work is held by the work holding claws (18).
The side edge of (W) is pressed so that the center line of the workpiece (W) in the longitudinal direction and the center line of the surface plate (work support unit) are aligned in a plan view.

Then, with the center line of the work (W) aligned with the center line of the surface plate, the work lateral moving device (10) and the work holding device (9) are moved downward to move the work.
(W) is again placed on the conveyor roller (12) of the work transfer device (8), and the side end of the work (W) is at the work holding device (9).
The work holding claws (18) are pressed downward and firmly restrained.

With the work (W) fixed on the conveyor rollers (12) of the work transfer device (8), the lifting mechanism (20) of the work lifting device (11) is lifted to move the back surface of the work. Push the work (W) upward with the contact jig (21). The work back surface contacting jig (21) is arranged in the central portion in the width direction of the work transfer device (8), and the upper surface thereof is formed into a curved surface having a middle height in the width direction. Is deformed into an upward convex arc shape in the width direction.

With the work (W) deformed into an arc shape, the portal frame (5) carrying the welding machine unit (6) is moved to weld the rib material (2) to the flat steel plate (1). To do. When the welding work is completed, the gate-shaped frame (5) is returned to the original position, the work back surface contact jig (21) is moved down, and the work holding claw (18) is moved up to move the work (W ) Is released and the work transfer device (8) is operated to carry out the work (W).

[0020]

According to the present invention, the work supporting unit for supporting the work is constituted by the work transfer device, the work holding device, the work lateral moving device, and the work lifting device, and the work supporting unit is mounted on the traveling rail. At least 1 along
A base plate is arranged to configure the work table, and the work transfer device of the work support unit is composed of a roller conveyor capable of rolling drive. The work lateral movement device and the work holding device are provided at the front and rear parts of the work transfer device in the transport direction. And the work lifting device is arranged substantially in the center of the work transfer device, and the work lateral movement device and the work holding device are configured to be movable up and down. It is composed of a work back surface contact jig fixed to the upper end, and the upper surface of this work back surface contact jig is formed into an upwardly convex curved surface with its center protruding in the work width direction. After loading the flat steel plate (work) temporarily attached with the work, the work lateral moving device is operated while the work lateral moving device and the work holding device are driven to rise, and the loaded work is moved to the center and work. While aligning the center with the transfer device and lowering both side edge parts of the work with the work holding device, the work lateral moving device and the work holding device are driven downward to fix the work in place, By pushing up and driving the work back surface contact jig formed on the convex curved surface with its center protruding in the work width direction,
The work can be curved so as to be convex upward at a predetermined position and securely restrained. Then, the product after welding can be formed in a state without welding distortion by welding in a state where internal stress in the opposite direction is applied to the work.

Further, according to the present invention, the surface plate for holding the work is constituted by one or more work supporting units, and each work supporting unit includes a work transfer device, a work holding device, and
Since it is composed of the work lateral movement device and the work lifting device, it is possible to correspond to the work length to be processed by increasing or decreasing the number of work support units, so the manufacturer can work according to the user's specifications. The delivery time can be shortened by setting the number of supporting units and installing them.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a rib welding apparatus.

FIG. 2 is a perspective view of a work supporting unit.

FIG. 3 is a plan view of a work supporting unit.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a front view of the work holding device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Flat steel plate, 2 ... Rib material, 3 ... Surface plate, 4 ... Traveling rail, 5 ... Gate frame, 6 ... Welding machine unit, 7 ... Work support unit, 8 ... Work transfer device, 9 ... Work holding device, 10 ... Work lateral moving device, 11 ... Work lifting device,
20 ... Lifting mechanism, 21 ... Work back contact jig, W ... Work.

Claims (1)

[Claims] 1. A portal frame equipped with a welder unit (6).
Form the dome (5) so that it can move along the running rail (4),
Surface plate (3) placed in the moving area of this gate-shaped frame (5)
The rib material (2) is temporarily fixed along the length of the
Plate Steel plate (1) is placed on the traveling welding unit (6) to form ribs.
To a flat plate for welding and fixing the joint between the material (2) and the flat steel plate (1)
Plate for supporting the work (W) in the rib welding equipment of
At least one (3) is arranged along the traveling rail (4).
It consists of a work support unit (7).
The work transfer device (8) and the work holding device (9)
And the work lateral movement device (10) and the work lifting device (11)
And a work transfer device for the work support unit (7)
(8) is composed of a roller conveyor that can be driven to roll.
The front and rear parts of the work transfer device (8) in the transport direction are
Position the workpiece lateral movement device (10) and the work holding device (9)
The work transfer device (8) at the center of the work transfer device.
Install the lifting device (11) and work lateral movement device (10) and work
The work holding device (9) is configured to be movable up and down to push up the work.
The lifting device (11) to the lifting mechanism (20) and the upper end of the lifting mechanism (20).
It is composed of a backside contact jig (21) fixed to the
Center of the upper surface of the backside contact jig (21) in the workpiece width direction.
It is characterized in that it is formed on an upward convex curved surface
Rib welding device for flat plates.