JPH04190973A - Welding method for diaphragm - Google Patents

Abstract

PURPOSE:To efficiently carry out production of stable quality in welding the insides of both ends of square cylindrical column base material by erecting the column base material alternately and performing welding from the upper surface. CONSTITUTION:The column base material 31 is erected up to an almost vertical state with the one end side upward and a welding head of a welding robot 120 is inserted from the upper side thereof and the overall periphery of the diaphragm 34 is welded. Afterward, the column base material is brought down up to a horizontal state and continuously, conveyed ahead and then, the column base material 31 is erected up to the almost vertical state with the other end side thereof upward and the overall periphery of the diaphragm 34 is welded by the welding robot 120 from the upper side thereof. Since two welding robots perform continuously welding work, it is efficient and the stable welding quality can be obtained by welding from the upper side.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a diaphragm welding method for welding the entire circumference of a diaphragm tack-attached to the tack-attached positions within both ends of a square cylindrical column base material. It is used to manufacture columns that make up the framework of housing units.

[Background technology]

The framework of the housing unit that makes up the unit house is constructed by welding beams to both ends of square cylindrical columns. When a beam is welded to both ends of a column, diaphragms are welded into both ends of the column in order to increase the strength of the rod ends to which the beam is welded.

Normally, when welding diamonds inside both ends of a column, holes for temporary attachment of the diamond membrane are drilled in advance in the diaphragm temporary attachment places on both ends of the column, and the temporary attachment positions inside both ends of the column are pre-drilled. Set the diaphragm at t, , 'In this state,
The diaphragm is temporarily welded at multiple locations, and then the entire circumference of the diaphragm is welded with zero welding hot spots. .

By the way, when welding the entire circumference of the diaphragm with a welding robot, it is preferable to perform the welding operation with the welding head of the welding robot always facing downwards due to welding conditions. However, when the column is positioned in a horizontal position (one outer surface of the column is horizontal), the diaphragm is set in a vertical position, so the welding head is always directed downwards on the four welding surfaces of the diaphragm. It is not possible to weld in this condition.

Conventionally, of the four surfaces where the outer periphery of the diaphragm and the inner periphery of the column touch, the lower surface is first welded, the column is rotated 90 degrees around its axis, and then the lower surface is welded. The side faces are welded, and the lower faces are sequentially welded to weld all four faces.

[Problem to be solved by the invention]

However, in the conventional welding method, of the four surfaces where the outer periphery of the diaphragm and the inner periphery of the column touch, the lower surface is first welded, and then the column is rotated 90 degrees around its axis. Since it is necessary to take the work procedure of first welding the lower surface, in other words, the welding work has to be intermittent, which has the disadvantage of poor work efficiency.

Moreover, in addition to a device to accurately rotate the column in 90-degree increments, a mechanism is required to position the column each time the column is rotated in 90-degree increments, which has the disadvantage of complicating the device. .

An object of the present invention is to eliminate such conventional drawbacks and to efficiently and stably cover the entire circumference of a diaphragm temporarily attached to the temporary attachment position within both ends of a square cylindrical column base material. The object of the present invention is to provide a method for welding a diaphragm that can be welded with high quality.

[Means to solve the problem]

Therefore, the diaphragm welding method of the present invention is a diaphragm welding method in which the entire circumference of the diaphragm, which is tack-attached at the tack-attached positions within both ends of a square cylindrical column base material, is welded to the column base material. The column base material is erected with one end facing upward, and in this state, the entire circumference of the diaphragm is welded to the column base material from above the one end.Then, after the column base material is laid down, the column base material is Then, the column base material is erected with the other end facing upward, and in this state, the entire circumference of the diaphragm is placed on the column base material from above the other end. Weld,
It is characterized by

[For production]

In advance, diaphragms are temporarily attached to the temporary attachment positions within both ends of the column base material. The column base material in this state is first erected with one end facing upward, and in this state, the entire circumference of the diaphragm is welded to the column base material from above the one end.

Next, after the column base material is laid down, it is transported in a direction perpendicular to the axis of the column base material and the upright direction, and then the column base material is erected with the other end side facing upward, and this state is At this point, the entire circumference of the diaphragm is welded to the column base material from above the other end.

Therefore, the entire periphery of the inner periphery of both ends of the column base material and the outer periphery of the diaphragm can be continuously welded, so that the welding work can be performed efficiently. Moreover, since the welding work can be performed from above downward, the quality is stable and the diaphragm can be firmly welded to the column base material.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing the production process of a housing unit 5 (see FIG. 3) assembled by the ceiling panel 1, floor panel 2, and two end panels 3.4 shown in FIG.

The ceiling panel l is produced by transporting the long side beams 11 produced in the long side beam production line 21 to the ceiling panel production line 22, and in this production line 22, two long side beams 11 are arranged in parallel, and there are The roof edge 12 is connected, and the ceiling surface material 13
It is made by attaching.

The floor panel 2 is produced by transporting the long-side porcelain 11 produced in the long-side porcelain production line 21 to the floor panel production line 23, and arranging two long-side beams 11 in parallel in this production line 23.
A joist (not shown) is connected between them, and the floor surface material 1
It is made by attaching 4.

Gable panels 3 and 4 are column 1 produced on column production line 24.
5 and the short side beam 16 produced on the short side beam production line 25
are each carried into the end panel production line 26, and in this production line 26, two pillars 15 are arranged in parallel,
It is made by connecting the short-side wire 16 between both ends thereof. Note that a joint 17 is attached to both ends of the pillar 15 in a direction perpendicular to the short side beam 16.

These ceiling panels 11 floor panels 2 and gable panels 3,
4 are each carried to the general assembly line 27, and in this general assembly line 27, the gable panels 3 and 4 are arranged on both sides of the ceiling panel 1 and the floor panel 2, which are arranged vertically and parallelly, and the respective joints 17 The housing unit 5 (see FIG. 3) is assembled by fitting and welding to both ends of each of the long sides 11 of the ceiling panel 1 and the floor panel 2.

The housing unit 5 is sent to an exterior wall panel installation line 28, where exterior wall panels are installed at predetermined locations on the exterior surface, and then sent to a feature/equipment installation line 29, where stairs are installed at predetermined locations on the interior. Unit, kitchen unit, bath unit, etc. are installed and completed. Note that by transporting a plurality of completed housing units 5 to a construction site by truck or the like and combining them there, a housing unit can be constructed.

FIG. 4 is a block diagram showing the detailed process of the column production line 24, and FIG. 5 is a detailed perspective view of the column 15 produced thereby. The plurality of square cylindrical pillar base materials 31 stocked in the stocking process 41 are carried into the first conveyor 42 one by one.

Therefore, first, in a cutting step 43, the module is cut to a length corresponding to each module of the housing unit 5, and then, in a drilling step 44, three diaphragm temporary attachment holes 32 are drilled on both end sides of the column base material 31. Ru. In addition, in this drilling step 44, two gable holes 33 for attaching the eaves unit are bored on the upper end side of the column base material 31.

Next, it is carried into the second conveyor conveyor 45.

Therefore, first, in the diaphragm temporary attachment step 46, the column base material 31 is
The diaphragms 34 are temporarily attached to the temporary attaching positions within both ends of the column base material 31 , and subsequently, the plate thickness of the column base material 31 is detected in a plate thickness detection step 47 . Thereafter, in a diaphragm loading step 48, the entire circumference of the diaphragm 34 temporarily attached to the temporary attaching positions within both ends of the column base material 31 is welded.

Next, the column base material 31 is transported to the end plate tacking step 50 by the third conveyor 49, and the end plates 35 are temporarily attached to both end surfaces of the column base material 31.
1. Therefore, first, the entire circumference of the end plate 35 is welded in the end plate main process 52, and then, in the sanding process 53, two of the four welding surfaces of the end plate 35 (the shiiguchi 17 and the short side rim 16 are attached). Sanding is performed on the two sides (the two sides shown).

Next, it is carried into the fifth conveyor 54.

Therefore, first, the joints 17 are temporarily attached to both ends of the column base material 31 in a joint tacking process 55, and then the entire circumference of the joints 17 is welded in a finishing process 56. The pillars 15 produced in this manner are sent to the end panel production line 26 for the next process.

FIG. 6 shows the welding procedure in the diaphragm loading step 48. The column base material 31 has been conveyed in the longitudinal direction in a horizontal position by the second conveyor 45.
is transported to the first welding position WP while being transported in a direction perpendicular to the transport direction of the transport conveyor 45 without changing its direction.
It is stopped at I.

Here, the column base material 31 is erected to a substantially vertical state with one end side upward, and in this state, the welding head of the welding robot 120 is inserted from above the end, and the one end side (upper end side) is The entire circumference of the diaphragm 34 is continuously welded to the column base material 31.

Thereafter, the column base material 31 is laid down to a horizontal state, and then is transported forward in a horizontal state, that is, in a horizontal state. The welding process is stopped at the second welding position WP2.

Here, the column base material 31 is erected to a substantially vertical state with the other end side upward, and in this state, the welding head of the welding robot 120 is inserted from above the end (2, the other end side (
The entire circumference of the diaphragm 3-; on the upper end side is continuously welded to the column base material 31. After that, the column base material a is laid down to a horizontal state, and then transported forward in a horizontal state, and then transported to the next step, the end play 1 tacking step 50, by the third conveyor 49. .

FIG. 7 shows the first and second welding positions WPI.

Welding robot 12 installed at each position of
0 and the detailed structure of the undulating device 121.

The undulating device 121 includes a shaft 122 supported horizontally on a base (not shown), a undulating base 123 which is provided on the shaft 122 so as to be undulating and has a undulating support 124.
a cylinder 125 that connects the piston opening/bottom to the undulation base 123 and undulates the undulation base 123; and an abutment support that is attached parallel to the undulation support 124 and abuts against the upper surface side of the column base material 31. 126, and a clamp mechanism 127 that clamps the column base material 31 while it is in contact with the abutment column 126.

Now, when the column base material 31 is carried to each welding position WPI, WP2 with the undulating column 124 in an upright state, when the column base material 31 is brought down by the drive of the cylinder 125, the abutting column 126 or the column substrate It comes into contact with the upper side of No. 31. Here, if the column base material 31 is clamped by the clamp mechanism 127 and then the undulating column 124 is erected by driving the cylinder 125, the column base material 31 will be in an erected state together with the undulating column 124. By inserting the welding head of the welding robot 120 from the upper end side of the base material 31, the entire circumference of the diaphragm 34 can be continuously welded.

Therefore, according to this embodiment, the column base material 31 that has been transported
Stand the O7 welding robot 12 upright with one end upward, and in this state, move the O7 welding robot 12 upward from the one end.
0 welding head was inserted to weld the entire circumference of the diaphragm 34 to the column base material 31, so the diaphragm 34
It is possible to weld the entire circumference continuously. Therefore,
Welding work can be done more efficiently. Moreover, at this time, melted? ';E Since welding work can be performed with the welding head of the bot 120 always facing downward, the quality is stable and the diaphragm 34 can be firmly welded to the column base material 31.

Further, after welding the diaphragm 31 on one end side of the column base material 31, the column base material 31 is laid down to a horizontal state, and then,
After being transported forward, the column base material 31 is erected to a substantially vertical position with the other end facing upward, and in the - position, the welding head of the welding Rojo No. 120 is inserted from above the other end. Since the entire circumference of the diaphragm 4 is welded to the column base material 31, the two gooey diaphragms 34 temporarily attached to both ends of the column base material 3 can be welded continuously and efficiently. I can do it.

This means that the two
The welding robot 120 on the stand can be used without any play. That is, when the welding robot 120 at the welding position WP2 is performing welding work, the welding robot 120 at the welding position WPI
0 can perform the welding work on the column base material 31 that is brought in next, so the welding robot 120 can be idle (the welding work can be carried out efficiently, etc.).

In addition, in the above embodiment, the welding work is performed with the column base material 31 standing vertically, but the angle at which the welding robot 120 always faces downward during the welding work is not necessarily limited to the vertical direction. It's not a thing.

【Effect of the invention〕

As described above, according to the present invention, the entire circumference of the diaphragm temporarily attached to the temporary attachment positions within both ends of the column base material can be welded efficiently and with stable quality.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a block diagram showing the production process of a housing unit, Fig. 2 is an exploded perspective view of the housing unit, and Fig. 3 is an assembled perspective view of the housing unit.
Figure 4 is a block diagram showing the detailed process of the pillar production line, Figure 5 is a perspective view showing the pillars produced by the pillar production line in Figure 4, and Figure 6 is a diagram showing the work order in the diaphragm watering process. , FIG. 7 is a diagram showing the undulating device and the welding robot. 31... Pillar base material, 32... Diaphragm temporary attachment hole, 3
4...Diaphragm, 120...Welding robot, 1
21...Luffing device.

Claims (1)

[Claims] (1) Welding the entire circumference of the diaphragm, which has been temporarily attached to the temporary attachment position within both ends of the square cylindrical column base material, to the column base material, respectively.
The method for welding a diaphragm includes: standing the column base material with its one end side upward; in this state, welding the entire circumference of the diaphragm to the column base material from above the one end; and then welding the column base material together. After being laid down, the column base material is transported in a direction perpendicular to the axis of the column base material and the upright direction, and then the column base material is erected with the other end side facing upward.
A diaphragm welding method characterized in that in this state, the entire circumference of the diaphragm is welded to the column base material from above the other end.