JPH0349799Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a welded H-section steel manufacturing apparatus for manufacturing H-section steel by welding.

[Conventional technology]

H-beam steel is generally made by combining steel plates of a predetermined thickness cut to a predetermined width and length into an inverted T shape, temporarily welded together, and then combining one steel plate into an H shape and temporarily welding them together. , it is manufactured by welding three steel plates in such a way as to create a bead in the corner. In this case, the combined steel plates maintain their combined shape by a presser roll that presses them from above on a roller table.
Temporary fixing is performed by spot welding at predetermined locations, and main welding is performed by gas welding or electric welding that can form beads.

[Problem that the invention attempts to solve]

The welded H-section steel manufactured by the above method is larger than the H-section steel manufactured by rolling or the like. Therefore, when welding the entry corner, the steel plates assembled in an H shape must be reversed multiple times at each entry welding position using a crane and a wire or chain. Slinging work requires a large amount of man-hours and is also accompanied by danger.

In addition, since the welded part is usually a gap between two steel plates that intersect at right angles, it is difficult to form an ideal bead during welding, making it difficult to maintain the strength of the product.

Therefore, the purpose of this invention is to create a welded H-beam steel that can automatically and efficiently produce beautiful, high-quality welded H-beam steels that have high strength at welded areas and are beautiful without the use of a crane. The present invention provides manufacturing equipment for.

[Means for solving problems]

This invention consists of a supply path for materials to be welded and a delivery path for products that are arranged in parallel at intervals, and a first welding station and a second welding station that are arranged in parallel at intervals between the supply path and the delivery path. A pair of arms having a welding station and an inversion station provided between the first and second welding stations, each of the first and second welding stations is capable of scooping up the workpiece and is tilted in opposite directions. On the other hand, the reversing station is made up of a predetermined number of pairs of arms, each consisting of a delivery side arm and a receiving side arm, which can freely transfer materials to be welded and have opposite directions of collapse. This is characterized in that it is possible to freely perform fillet welding with the fillet weld facing upward, and to perform automatic reversal after welding on one side, followed by upward fillet welding with the fillet weld on the opposite side.

Next, this invention will be explained with reference to the drawings.

FIG. 1 is a schematic plan view showing one embodiment of the device of this invention, and FIG. 2 is a schematic side view of the main parts. As shown in the drawing, a supply path A and a delivery path B are arranged parallel to each other at intervals on the same floor. At the rear end of the supply path A, there is a transfer section 3 that can be raised and lowered.
A transfer section 4 that can be raised and lowered is provided at the tip of the delivery path B. The delivery path B is arranged such that the transfer section 4 at the tip thereof is parallel to the transfer section 3 at the rear end of the supply path A. Transfer section 3 of supply path A
and the transfer section 4 of the delivery path B, there is a first welding station C parallel to the two and spaced apart from each other.
and a second welding station D are provided.

Further, between the first welding station C and the second welding station D, an inversion station E is provided in parallel to the first welding station C and the second welding station D.

The supply path A is a material to be welded 1 (indicated by a phantom line in Fig. 2), which is made by combining steel plates of a predetermined thickness and cut to a predetermined width and length and temporarily fixed in an H shape. The feed path B consists of a roller table for feeding the workpiece to the first welding station C in a posture of It consists of a roller table for transporting the material out of the device.

A predetermined number of chain conveyors 2 are provided between the supply path A and the delivery path B, which are perpendicular to the supply path A and the delivery path B. The chain conveyor 2 is provided between the rollers of the supply path A and the delivery path B at a position slightly lower than the rollers.

The transfer section 3 provided at the rear end of the supply path A and the transfer section 4 provided at the tip of the delivery path B each have a structure in which rollers constituting a roller table move up and down. By descending, the material to be welded that has progressed on the supply path A is placed on the chain conveyor 2, and the transfer section 4
has the function of lifting the product 1', which is taken out from the second welding station D by the chain conveyor 2 after welding is completed, onto the delivery path B.

The first welding station C and the second welding station D have the same shape and are made up of a plurality of pairs of arms 5 and 6 arranged in parallel.

Arms 5 and 6 of the first welding station C
are jaw-shaped receiving parts 5a and 6 having an angle of 90° for receiving the lower surface of the flange of the workpiece 1 temporarily fixed in an H shape.
a, and has a length that allows the flanges at both ends of the material to be welded 1 to be abutted. The arms 5 and 6 are arranged so that their tips are on the inside and their bases are on the outside, and the parts other than the bases overlap, and are rotated below the chain conveyor 2 by shafts 9A and 9B provided at the bases. It is movably pivoted.

The rods of hydraulic cylinders 7 and 8 are pivotally attached to the lower surfaces of arms 5 and 6, and when the hydraulic cylinders 7 and 8 operate, arms 5 and 6 are rotated toward each other using shafts 9A and 9B at their bases as fulcrums. It stands up in a "V" shape inclined at an angle of 45 degrees in the opposite direction, and has the function of scooping up the workpiece 1 on the chain conveyor 2 from below.

The welded material 1 scooped up by the arms 5 and 6 standing up in a "V" shape is tilted at 45 degrees in opposite directions, with one of the corners facing upward.

The welding nozzles 10 and 11, which can freely move up and down and move horizontally in the longitudinal direction of the welded material 1, face the upward facing corner, and weld to the upward facing corner of the welded material 1. is possible.

A reversing station E provided between the first welding station C and the second welding station D is
A plurality of pairs of arms consisting of a delivery side arm 14 and a receiving side arm 15 are arranged in parallel.

Delivery side arm 14 and reception side arm 15
has jaw-shaped receiving parts 14a and 15a for receiving the lower surface of the flange of the workpiece 1 welded on one side by the first welding station C, and the flanges at both ends of the workpiece 1 are welded by the first welding station C. It has a length that allows it to be abutted. The receiving portion 14a of the delivery side arm 14 on the side of the first welding station C has an angle of 90°. The receiving portion 15a of the receiving arm 15 on the second welding station D side has an angle of, for example, 85°, which is smaller than 90°, and is inclined downward toward the corner.

Delivery side arm 14 and reception side arm 15
are arranged close to each other with their tips facing outward and their bases facing inside, and are rotatably mounted below the chain conveyor 2 by shafts 16A and 16B provided at their bases.

Rods of hydraulic cylinders 17 and 18 are pivotally attached to the lower surfaces of the delivery side arm 14 and the receiving side 15. By the operation of the hydraulic cylinder 17, the delivery side arm 14 uses the shaft 16A at its base as a fulcrum and stands up to a predetermined angle slightly exceeding 90°, for example, 95°, and scoops up the workpiece 1 on the chain conveyor 2 from below. , has the function of delivering to the receiving arm 15.

On the other hand, due to the operation of the hydraulic cylinder 18, the receiving side arm 15 stands up to a predetermined angle, for example, 85°, which is slightly smaller than 90°, using the axis 16B at its base as a fulcrum, and receives the workpiece 1 on the receiving side arm 14. It has a function to reverse this.

Arms 5 and 6 of second welding station D
The workpieces 1 to be welded, which have been reversed by the reversing station E, are welded at one side of the workpiece, and are tilted at 45° in opposite directions to stand up. The welding nozzles 12 and 13, which can move freely laterally, make it possible to weld into the nook on the other side of the workpiece 1 facing upward. Its structure and operation are the same as those of the first welding station C, so a description thereof will be omitted.

[Effect]

The device of this invention having the above-mentioned configuration transfers the material to be welded 1 supplied through the supply path A to the transfer section 3.
As it descends, it moves onto the chain conveyor 2, and as the chain conveyor 2 travels, it comes to face the first welding station C.

The material to be welded 1 is placed facing the first welding station C with arms 5 and 6 both lying down.
It can be scooped up by raising the arm 5 at 45 degrees, keeping the entrance on one side facing upward.

Here, the welding nozzle 10 is brought close to the upward entry corner of the material to be welded 1 and moved along the material to be welded 1, thereby forming a bead a.

Since such a bead a is formed by an upward recess that is most effective for welding, it can be completely welded with one build-up.

After the bead a is formed in this way, the arm 5 is laid down, and then the arm 6 is raised up by 45 degrees, and the workpiece 1 is again scooped up from above the chain conveyor 2 and tilted in the opposite direction. .

In this manner, the welding nozzle 11 is lowered to approach the corner on the opposite side of the welded material 1 facing upward, and is moved along the welded material 1, thereby forming a bead b.

In this way, the welded material 1 on which the beads a and b have been formed is again left on the chain conveyor 2 due to the collapse of the arm 6.
is sent to the reversing station E by running the .

The reversing station E scoops up the workpiece 1 sent by the chain conveyor 2 to a position directly above the delivery side arm 14 from above the chain conveyor 2 by raising the delivery side arm 14, and at the same time scoops up the workpiece 1 sent to the position directly above the delivery side arm 14 from above the chain conveyor 2, and at the same time scoops up the workpiece 1 sent to the position directly above the delivery side arm 14. to be moved to.

At this time, the delivery side arm 14 stands up to an angle slightly more than 90°, for example 95°, and the receiving side arm 15 stands up to an angle slightly smaller than 90°, for example 85°.
, and since the receiving part 15a of the receiving arm 15 has an angle of 85°, which is smaller than 90°, the workpiece 1 is transferred from the delivery arm 14 to the receiving arm 15. It can be relocated appropriately.

The workpiece 1 transferred to the receiving arm 15 is placed on the chain conveyor 2 again by the lowering of the receiving arm 15, but at this time, the front and back sides are reversed.

The welded material 1 placed on the chain conveyor 2 again in this way has a new entry hole on the other side where no bead is formed on the upper side, and when it is sent onto the second welding station D, the second welding material 1 is placed on the chain conveyor 2 again. By raising arm 5 of welding station D by 45 degrees,
The entry point on the other side faces upward.

At this point, the welding nozzle 12 is lowered to approach the nozzle and moved along the material to be welded 1, thereby forming a bead c.

Next, the arm 5 is laid down and the arm 6 is raised 45 degrees so that the entry corner on the opposite side faces upward, and the welding nozzle 13 is lowered to approach the entry corner and moved along the material to be welded 1. By doing so, a bead d is formed.

Due to the formation of beads c and d,
The workpiece to be welded, which has completed build-up welding on all the corners, becomes a product 1' and is placed on the chain conveyor 2 by lowering the arm 6, and is then sent toward the delivery path B by the running of the chain conveyor 2. It will be done.

In the delivery path B for receiving the product 1', the transfer section 4 is lowered until the product reaches the product.

The product 1' that has reached the transfer section 4 is scooped up from the chain conveyor 2 by the upward movement of the transfer section 4, and sent through a delivery path B toward, for example, a straightening machine (not shown).

By selecting the arrangement of the first and second welding stations C and D and the reversing station E, simultaneous work can be performed at each station by intermittent movement of the chain conveyor 2.

In particular, since build-up welding is performed from directly above the upward facing corner, a strong and beautiful bead is formed with only one welding process, and it is possible to work with extremely high efficiency, making it possible for operators in the control room to It is also possible for one person to work alone.

[Effect of idea]

As is clear from the above explanation, the device of this invention is capable of performing the most effective build-up welding in a safe and highly efficient manner, and has the advantage of being able to fully automatically produce high-quality H-section steel. This will bring about a positive effect.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing one embodiment of the device of this invention, and FIG. 2 is an enlarged side view showing the main parts. In the drawings, A... supply path, B... delivery path,
C... First welding station, D... Second welding station, E... Reversing station, 1... Material to be welded, 1'... Product, 2... Chain conveyor,
3, 4... Transfer section, 5, 6... Arm, 7, 8...
...Hydraulic cylinder, 9A, 9B...Shaft, 10,1
1, 12, 13... Welding nozzle, 14... Delivery side arm, 15... Receiving side arm, 16A, 1
6B...Shaft, 17, 18...Hydraulic cylinder, a,
b, c, d...bead.

Claims (1)

[Claims for Utility Model Registration] Delivery of a product having a supply channel for materials to be welded which is arranged in parallel at intervals and has a transfer section that can be raised and lowered at its rear end, and a transfer section that can be raised and lowered at its tip. a first welding station and a second welding station that are arranged in parallel with a space between a transfer section of the supply channel and a transfer section of the delivery channel; and the first welding station and the second welding station. A reversing station is provided between and in parallel with the station, and a chain conveyor is provided between and perpendicularly to the transfer section of the supply path and the transfer section of the delivery path. , each of the first welding station and the second welding station has a jaw-shaped receiving part that receives a lower surface of a flange of a material to be welded that is temporarily attached in an H shape, and the flange at both ends of the material to be welded is consisting of a plurality of sets of a pair of arms having a length that makes contact with each other, each of the pair of arms has its tip on the inside and its base on the outside, and the parts other than the base overlap with each other. It is pivoted below the chain conveyor by a shaft provided at the base, and can be erected in a "V" shape tilting at an angle of 45° in opposite directions using the shaft as a fulcrum by a hydraulic cylinder. The reversing station has a jaw-shaped receiving part that receives the lower surface of the flange of the welded material temporarily attached in an H shape, and has a length such that the flanges at both ends of the welded material come into contact. It consists of a plurality of pairs of arms each consisting of a delivery side arm and a receiving side arm, and the delivery side arm and the receiving side arm are arranged close to each other with their tips facing outside and their bases facing inside, The arm on the receiving side is pivoted below the chain conveyor by a shaft provided at the base, and the arm on the receiving side can be erected at a predetermined angle of slightly more than 90° using a hydraulic cylinder with the shaft as a fulcrum. The arm has a function of receiving the material to be welded on the delivery side arm by being erected by a hydraulic cylinder at a predetermined angle slightly smaller than 90° using a shaft provided at the base as a fulcrum; fillet welding on one side of the workpiece at a welding station with the fillet welding point facing upward; inversion of the workpiece at the reversal station; and the opposite side of the workpiece at the second welding station. A manufacturing device for welded H-section steel, characterized in that fillet welding can be performed freely by oriented the fillet weld point upward.