JPH07112587B2 - Box Welded Wire Mesh Manufacturing Equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to an apparatus for manufacturing a box-shaped welded wire net built in a concrete slab.

[0002]

2. Description of the Related Art A box-shaped welded wire net for a concrete slab is made by integrally joining two welded wire nets with a connecting material. The applicant of the present invention is a specialized manufacturer of welded wire mesh, and in recent years, the welding of tie materials has also been automated, and a patent is being applied for as Japanese Patent Application No. 3-358289. As shown in FIG. 7, a large number of ladder-shaped joints S'are prepared, welded to both side edges of the upper and lower elongate wire nets one after another, and then the cutting width C is cut off to divide into products of length a. Is.

[0003]

The box-shaped welded wire mesh produced by the method shown in FIG. 7 is unsuitable for large-scale concrete slabs because the connecting material is welded only to both side edges of the upper and lower wire meshes and not in the central portion. . In addition, a large number of connecting materials are prepared and placed in advance, and a mechanism that feeds and supports the welding position at appropriate times is required.
It wasn't easy. The present invention is mainly intended for a box-shaped welded wire mesh for a large-sized concrete slab having a length and width of several meters, and not only connects both side edges of the upper and lower wire meshes with a connecting material, but also connects an intermediate position of the horizontal width at some place. In the case of concrete slabs that have openings and cutouts, the problem was the development of a simple device that could be joined by inserting connecting materials at various places such as the openings of the box-shaped wire mesh and the edges of the cutouts.

[0004]

DISCLOSURE OF THE INVENTION A box-shaped welded wire mesh manufacturing apparatus according to the present invention is a welding method in which a required interval is maintained vertically in a horizontal posture.
Two wires are intermittently fed horizontally and the connecting material is
Stop the fixed positions one after another between the front and rear gate frames that are welding positions.
The steel rod that descended there as a vertical connecting material
Made of box-shaped welded wire mesh for concrete plate that is welded to the net and cut
It is a manufacturing device and stands across the feeding path of the above two wire meshes.
Above and below the two gate frames, between the beams of the front and rear frames,
Three or more that can be adjusted to each other along the feeding route
Beam-shaped upper trolleys, from each of the above upper trolleys,
A stick straightener, a bar feed, which hangs so that it can be adjusted and moved along the direction.
Steel rod feeding head consisting of both fixing clamps and rod cutting head
The upper welding gun, a pair of rails that horizontally traverse below the supply path.
Position so that it will be lined up directly under the upper trolley above.
Adjustable three or more beam-shaped lower trolleys and their respective lower parts
Equipped with a lower welding gun on the trolley, the steel rod supply head is
After cutting the supplied steel bar, its position can be transferred to the upper welding gun
It is characterized by doing so.

[0005]

[Function] Conventionally, the production of a flat welded wire mesh has been rationalized sufficiently by a relatively long experience, but the shape of the connecting material for stacking two wire meshes into a box shape and its automatic welding are still in the beginning. I just started. In particular, the joint welding is troublesome, so in order to reduce the number of welding of the joint material as much as possible, the shape is devised like the ladder-shaped joint material 3 in Fig. 7, and the welding position should be four in one box-shaped wire mesh. I was doing. This invention abandons such conventional thinking,
I decided to put the connecting material on the whole surface of the box-shaped wire mesh. As a result, unlike the conventional case, it is not necessary to impose the action of preventing the upper and lower wire nets from being twisted on the tie member itself, and it has become possible to use a mere steel rod as the tie member. And by making it a simple steel rod, it became possible to carry out a simple construction method in which the connecting material was extended everywhere as a long steel rod, and was cut after welding. If there are a plurality of resistance welded portions between the steel rod tie material and the wire netting, the twisting resistance of the upper and lower wire netting in that direction is practically sufficient.

In the box-shaped welded wire mesh manufacturing apparatus of the present invention, the connecting member mounting position of the two wire meshes is stopped at the welding position, and the bar feed clamps of the rope feed heads of the respective upper carts are simultaneously lowered to make the steel bar. Place the tip along the back wire mesh. Then, the upward resistance welding guns of the lower carts ascend to weld the tip of the steel rod to the muscle. Then, the steel rod is cut with a rod cutting head attached to the lower end of the steel rod feeding head. Before and after this, the steel rod is also welded to the front side wire netting. With this, as many connecting materials as the number of upper carts are welded together. Then, the above-mentioned stop mechanism stops the next connecting member attachment position of the upper and lower wire nets at the welding position, lowers the steel rod as described above, welds to both wire net bars, and cuts it.

[0007]

1 and 2 show an embodiment of an apparatus for manufacturing a box-shaped welded wire mesh according to the present invention. In the figure, 1 and 1a are wire net supply paths.
Lower conveyor on that, 2 in truck stop mechanism, 2a its stopper plate, 3 portal rack frame, 3a thereof liftable粱, the upper carriage, 5 Tsunabo feed head 4, 6 bars straightening Machine, 7 bar feed clamp, 8 bar fixing clamp, 9 bar cutting head, 1
Reference numeral 0 is a lower carriage, G is a resistance welding gun (X type), W is a steel rod that serves as a tie material S, and W ₀ is a steel rod supply device. FIG. 6 is an example of a box-shaped welded wire mesh made according to the present invention. Since it is for a large concrete slab of several meters in length and width and has an opening A in the center, the conventional method of welding the connecting material only to both edges cannot be used. According to the present invention, the connecting material (commonly called spacer) S can be arranged on the entire surface as shown in the drawing.

The upper and lower conveyors 1 and 1a are roller conveyors, which are positively driven, but when the wire mesh M just above is stopped by the stop plate 2a, it continues to slip. In the meantime, in this example, the five connecting materials S arranged side by side are welded all at once. As for the work procedure, the steel rod W is preliminarily inserted from the five steel rod feeding devices W ₀ into the respective upper carriages 4 as shown in FIG. 2, and is added to the rod straightener 6 at the upper end of each steel rod supply head 5. Let The tip of the steel rod W, which has not been bent by the straightener 6, is stopped at a position slightly out of the cutting head 9 at the lower end of the head 5. On the other hand, the wire mesh M is placed on the upper and lower conveyors 1 and 1a, and the stop mechanism 2 that stops the wire mesh M is placed so that the first planned welding position of the joint material stops right above the lower welding gun G (FIG. 1 shows first). After the welding of the joining material S is finished, the second joining material welding position is shown just above the lower gun G).

When the tips of the upper and lower metal nets M, M hit the stop plate 2a by the start of the conveyors 1, 1a, the connecting member mounting position stops right above the lower gun G. When the feed clamp 7 holding the pre-inserted steel rod W is pushed down by a fluid pressure cylinder (not shown) in the supply head 5 by a constant stroke, that is, by the thickness of the box-shaped welded wire mesh, the steel rod as shown in FIG. The lower end of W stops along the vertical line M ₁ of the back side wire mesh M. Therefore, the lower gun G is moved from the standby position by the fluid pressure cylinder 11 to the positions shown in FIGS.
To the welding position, and the tip of the steel rod W is welded to the vertical bar M ₁ . After welding, the gun G is slightly lowered by the cylinder 11 so as not to hit the transverse line M ₂ when advancing the wire mesh M. At the same time, the blade 9a of the rod cutting head 9 shown in FIG. 3 is advanced to cut the steel rod W into the size of the connecting material, and immediately the steel rod supply head 5 shown in FIG.
To the right side standby position and instead advance the upper gun G to the welding position. Then, the gun G is lowered, the cut end of the steel rod W is welded to the vertical line M ₁ of the front side wire mesh, and returned to the standby position in FIG.
The lifting and lowering of the upper gun G is performed by the fluid pressure cylinder 11 suspended from the upper carriage 4, but the lateral movement is depicted by an arrow, and the cylinder is omitted. In addition, the lifting beam 3a and the upper carriage 4 on the pedestal 3
And are raised and lowered only when the thickness of the box-shaped wire mesh changes.

Since the apparatus of the embodiment shown in FIG. 1 mainly targets a relatively thick box-shaped wire net, the welding guns G are arranged above and below. When targeting a relatively thin box-shaped wire mesh, the steel bar W can be welded to the wire mesh vertical bars M ₁ and M ₁ on both the front and back sides by using a lower gun G having a slightly deeper bottom as shown in FIG. . At that time, the steel rod W may be cut after the front and back welding is completed. After the joining material welding and cutting are completed, the fixed clamp 8 is closed, the feed clamp 7 is opened, and the steel rod W is gripped again after returning upward. The fixed clamp 8 is opened. Figure 4 shows the feed clamp 7
In the plan view, the steel rod W coming from the above is passed through the rod receiving hole 7b, and the steel rod W is pressed against the square inner wall surface by the pressure head 7a and the cylinder 11 and held. The fixed clamp 8 has the same shape. FIG. 5 is a sectional view showing the internal structure of the rod cutting head 9. When the cam 9b is rotated by the cylinder 11, the link 9c pushes out the blade 9a and pushes off the steel rod W passing through the through hole 9d. ing.

In each upper carriage 4 of FIG. 2, the relative positions of the carriages 4 can be freely changed by the respective servomotors 4a, so that it is easy to change the connecting member mounting position for feeding each steel rod W. Can handle. In response to this, the lower trolleys 10 are also related to each other by driving them individually by the chain 10a. Although one embodiment has been described above, the present invention is not limited to this embodiment,
Various changes according to known techniques of those skilled in the art depending on the implementation conditions,
It goes without saying that it can be applied. The expressions "upper and lower" in the description indicate relative positions.

[0012]

According to the present invention, the automation of the box-type welded wire mesh tie welding which was first developed by the applicant of the present invention is further increased in scale, and at the same time, simplification and efficiency are achieved. That is, the connecting material itself is changed from the conventional ladder shape to one bar, and it is not necessary to manufacture and store a large number of the connecting materials in advance as in the conventional case and supply them to the welding portion one by one. We have developed the simplest construction method in which a long steel rod is sent to the weld and welding and cutting are repeated. A steel rod, which has no bending tendency with a rod straightening machine, is held by the straightening machine of the rope rod feeding head and the moving clamp so that it will follow the wire mesh securely, so that resistance welding can always be performed without deviation. Since the tip of the steel rod is first welded and then cut to the size of the connecting material, both sides of the cutting position will be held by the tip welded part and the feed clamp in front, and the cut end will be cut off. There is no risk of moving or the steel rod side cut end coming off.

In the apparatus of the present invention, a plurality of upper carts are arranged on a beam that can be raised and lowered and can be simultaneously raised and lowered. Therefore, the steel rod supply heads attached to the respective upper carts can be adapted to the thickness of the box-shaped welded wire net as a product at any time. To be made. Each upper trolley and lower trolley can be relocated by computer control according to the connecting position of the connecting material in the product width direction, so not only the setup change when changing the product is easy, but also the connecting material of one box-shaped wire mesh is attached. It is even possible to change the lateral arrangement of parts on the way to perform continuous work. Weld the lower end of the steel rod for tie material to the lower wire mesh.
Then, after cutting to the required size, all the rope rod supply heads are
Replace with the upper welding gun and place the steel rod cutting end on the upper wire mesh on the spot.
The equipment is simplified because it is welded to. Move upper welding gun
Instead, move the entire wire mesh and weld the cut end
However, in that case, the wire mesh feed stop mechanism is a conveyor and a stop plate.
You can't use something as simple as. Opened by this invention
A large box-shaped wire mesh with a mouth and a notch, as the designer thinks
Put the tie material at the position for easy mass production, and the equipment cost
Has a great effect to be kept to a minimum.

[Brief description of drawings]

FIG. 1 is an elevation view of an embodiment of the device of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is an explanatory view of a main part of FIG.

FIG. 4 is a plan view of a feed clamp.

FIG. 5 is an elevational view of a rod cutting head.

FIG. 6 is a perspective view of an example of a box-shaped welded wire mesh.

FIG. 7 is an explanatory view of a conventional technique.

[Explanation of symbols]

1 upper conveyor 1a lower conveyor 3 portal rack frame 4 uppercarriage 5 steel bar delivery head 10 the undercarriage

Claims (1)

[Claims] 1. Welding in a horizontal position with a required space between the upper and lower sides
Two wires are intermittently fed horizontally and the connecting material is
Stop the fixed positions one after another between the front and rear gate frames that are welding positions.
The steel rod that descended there as a vertical connecting material
Made of box-shaped welded wire mesh for concrete plate that is welded to the net and cut
It is a manufacturing apparatus, and the above-mentioned two front and rear gates that stand across the above-mentioned two wire feeding paths
Between the form frame and the beams of the above and after frame, hang it along the above feeding path.
Three or more beam-shaped upper carriages with adjustable mutual spacing,
Adjustable movement from the above upper dolly along the longitudinal direction of the dolly
Stick straightener, stick feed, and fixed clans that hung down as much as possible
Steel rod supply head and upper welding gun consisting of
It is hung on a pair of rails that horizontally cross under the above supply path.
And three adjustable positions so that they line up just below the upper trolley
The above beam-shaped lower trolleys and the lower melting
It is equipped with a gun, and the above-mentioned steel rod feeding head can change the position after cutting the fed steel rod.
Box shape characterized by being able to transfer to the upper welding gun
Welding wire mesh manufacturing equipment.