JP2639827B2 - Method of manufacturing pillars for scaffolding members such as building, and apparatus therefor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method of manufacturing a frame scaffold member pillar used for constructing a temporary scaffold for various construction works such as a building and a handrail pillar, and an apparatus therefor. About.

[Conventional technology and its problems]

Conventionally, for example, it is constructed in the form of a portal type, a brace stiffener type, a U-shaped processed stiffener type, etc., and both sides of the pillar, or a shaft inwardly above and below one of the pillars. A crossing brace pin is attached, and a connecting pin hole is formed at the upper end of the pillar, and a connecting pin hole or projection is formed at the lower end. Then, by connecting the cross bracings to the cross bracing pins, the building opposite to each other is connected to each other sequentially in a self-standing manner, and a required floor fabric or skirting board is required between adjacent constructions. A temporary scaffold is constructed by erection.

By the way, since the attachment of the cross-brace pins to the pillars constituting the above-mentioned building, or the processing of the connecting pin holes and projections, has been generally performed by hand conventionally,
The installation work and the processing work take time and are extremely inefficient. In addition, the positioning of the mounting position and the like are very troublesome, and the quality tends to vary. And in particular, the strut 101
At the time of installation, as shown in FIG. 7, since it was supposed to be performed manually mainly by carbon dioxide welding means, it takes a very long time and the work efficiency is extremely poor.
Not only spatter adheres to the outer peripheral surface of the welded part and causes unevenness of the bead width, which greatly impairs the appearance, but also tends to cause variations in welding strength due to differences in the skill level of the workers and even by the same worker. Met. In addition, when welding to the hot dip galvanized pipe material, the galvanized layer is peeled off and discolored, and a correction treatment is required, which not only significantly impairs the appearance but also lowers the rust prevention power, and In addition, toxic gas is generated due to the combustion of the galvanized layer and the working environment is deteriorated, so that it is necessary to take additional safety and health measures.

The present invention solves the conventional problems at a glance, and can not only automatically and extremely efficiently process the mounting of the crossing brace pins on the pillars and the connecting pin holes, but also always provide uniform uniformity. An object of the present invention is to provide a method of manufacturing a pillar for a framed scaffolding member, which can maintain quality and has a very good finish and a good appearance, and an apparatus therefor.

[Means for solving the problem]

The first invention of this application is a metal pipe material A having a required length.
Is intermittently sent out, and while being sequentially transferred by the transfer device 20 provided with the chucks 24, 25, and 26, one end of the pipe material A is subjected to projection processing and drilling processing by the press 28 as necessary, A pillar for a scaffolding member such as a frame, characterized in that the end is drilled with a press 35, and then the crossed bracing pin 3 with a seat 4 with a projection is welded with a projection welding machine 38, 39. It is a manufacturing method of.

The second invention of this application relates to an aligned metal pipe material A.
13 that sequentially and intermittently feeds along the guide rails 14
And a transport device 20 that grips the pipe material A on the chucks 24, 25, and 26 and intermittently transports the pipe material A at regular intervals, and positioning devices 29 that are disposed on both sides of the transport device 20 at regular intervals so as to face each other.
Press for punching and drilling 28, Press for drilling 35
And positioning device 36, and crossing brace pin supply means 42 and 43
And a pair of projection welding machines 38 and 39 provided with the above.

[Operation]

The metal pipe material A is sent out intermittently by the sending device 13, and is sequentially and intermittently transferred by the transfer device 20. Then, one end of the pipe material A is made to have a projection or a hole as required by a positioning device 29 and a press 28 disposed opposite to both sides of the transfer device 20, and a press 35 and a positioning device 36 are provided at the other end. Then, a hole is drilled at an appropriate position, and then, a pair of crossed bracing pins 3 with seats 4 are formed on both ends of the pipe material A by a pair of projection welding machines 38 and 39.
In this way, pillars for a framework scaffolding member can be efficiently and automatically manufactured by projecting and welding.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a frame 1 formed by using a pillar manufactured according to the present invention. In FIG. 1, reference numeral 2 denotes a pair of metal pipe pillars on both sides, and reference numeral 3 denotes a pillar of the pillar 2. Crossed brace pins welded by resistance welding means, such as projection welding, facing each other up and down, and the crossed brace pins 3 are integrally formed with a seat 4 having a ring-shaped projection 5 at a base end thereof. (See FIG. 2). The cross bracing pin 3 may be integrally formed by forging or cutting, and the shape of the projection 5 may be a known shape such as a ring-shaped outer shape or a missing circle. Reference numerals 6 and 7 denote connecting pin holes and projections respectively formed at the upper and lower ends of each of the pillars 2, 8 denotes a horizontal member provided at the upper end of the pillar 2, and 9 denotes the horizontal member 8 and the legs. A stiffener 10 for connecting the lower part of the column 2 with the stiffener 9 and the pillar 2
Is a stiffening material that connects

Note that a connecting pin hole may be formed instead of the protrusion 7 formed at the lower end of the pillar 2.

Next, a manufacturing apparatus and a manufacturing method of the pillar 2 will be described with reference to FIGS.

That is, in the figure, 11 is a base, 12 is a square frame standing on the base 11, and 13 is a delivery device arranged at the upper end of one side of the frame 12, The apparatus 13 includes a required number of guide rails 14 that are disposed at a predetermined interval in an inclined manner, a pipe dispensing member 15 that is disposed swingably on one side of a rear end portion of the guide rails 14, and each of the guide rails 14. A pipe fixing member 16 is disposed above and below the front end via a fluid pressure cylinder 17 so as to be movable up and down. The pipe fixing member 16 is disposed obliquely forward of each of the fixing members 16 so as to protrude and retract on the side of the guide rail 14. It comprises a pipe stopper 18, and a fluid pressure cylinder 19 for operating the pipe stopper 18. Reference numeral 20 denotes a transfer device disposed substantially in front of the center of the delivery device 13;
Is a transfer rail 21 laid on the base 11, the transfer rail 21
A truck 22 of a required length, which is disposed so as to be able to travel along
It comprises a fluid pressure cylinder 23 for reciprocating the cylinder 22 at a predetermined stroke, and first, second, and third chucks 24, 25, and 26, which are erected upward at equal intervals on the carriage 22. . Reference numeral 27 denotes a transfer member connected to the guide rail 14 and disposed on both sides of the first chuck 24, and reference numerals 28 and 29 disposed on both sides of the upper first chuck 24 at a predetermined interval so as to face each other. A projection / drilling press and a first positioning device, wherein the first positioning device 29 is a frame 30 erected on the base 11;
A slide rail 31 disposed on the frame 30 so as to be orthogonal to the transfer device 20; a chuck mounting body 33 slidably disposed on the slide rail 31 via a fluid pressure cylinder 32; It comprises a chuck 34 with a bead sensor rotatably mounted on the mounting body 33. 35 is the press
A punching press 36 disposed on one side of the second chuck 25 to be positioned on the opposite side of the second chuck 25 is a second press disposed on the other side of the second chuck 25 corresponding to the press 35. The second positioning device 36 is different from the first positioning device 29 in that the second positioning device 36 is freely movable along a traveling rail 37 laid in a direction perpendicular to the transport rail 21. And the same reference numerals indicate the same parts. Numerals 38 and 39 denote first and second projection welding machines disposed on both sides of the third chuck 26 at predetermined intervals so as to face each other. The second projection welding machine 39 is capable of moving forward and backward. 40 ・ 41
Is an upper electrode and a lower electrode constituting the first and second projection welding machines 38 and 39, 42 is a parts feeder attached to the first and second projection welding machines 38 and 39, and 43 is a part feeder 42. This is a chuck hand for taking out the crossing bracing pin 3 and supplying it to the first and second projection welding machines 38 and 39, respectively. 44 is the press 28
A pedestal is disposed in front of 35 so as to be able to move up and down, and A indicates a metal pipe material of a required length.

 Next, the operation of the above device will be described.

First, the pipe member A is arranged and supplied on the guide rail 14 while the dispensing member 15 is operated. At this time, the pipe material A located at the front row of the guide rail 14 is locked by the rise of the pipe stopper 18, and the second-place pipe material A is pressed and fixed by the lowering of the fixing member 16. Thereafter, the operation of the fluid pressure cylinder 19 causes the pipe stopper 18 to operate.
Is lowered, the pipe material A in the front row is released and sent out. When the delivery of the pipe material A is completed, the pipe stopper 18 rises again and the hydraulic cylinder 17
Operation raises the fixing member 16, and the second-place pipe material A
Is released and locked by the pipe stopper 18, and when the locking is completed, the fixing member 16 is lowered again to press and fix the pipe member A located at the second position. Thereafter, similarly, the pipe material A is sequentially and intermittently sent out (see FIG. 4). The pipe material A, which is sequentially and intermittently sent out, causes the bogie 22 to reciprocate along the transport rail 21 by the fluid pressure cylinder 23, so that the first chuck 24 uses the first positioning device 29 to cause the second positioning device 36 to perform. The second positioning device 36 with the second chuck 25 to the projection welding machines 38 and 39,
Projection welders 38 and 39 with the third chuck 26
Then, they are continuously and intermittently transferred to discharge sections (not shown), and required processing is performed (see FIG. 6). That is, the pipe material A intermittently sent from the sending device 13 is held by the first chuck 24 via the transfer member 27. Then, the first positioning device 29 advances and the pipe material A is moved by the chuck 34.
The chuck 34 is rotated and positioned to properly position the processing position by detecting the beat of the pipe material A by detecting one end of the pipe material A. At this time, the first chuck 24 is opened simultaneously with the gripping by the first positioning device 29 to release the pipe material A and stop at the same position. When the positioning of the pipe material A is completed, the first positioning device 29 moves forward along the swing rail 31, and holds the free end of the pipe material A on the press 28 while horizontally holding the pipe material A on the pedestal 44. Perform projection or drilling. When the processing is completed, the first positioning device 29 retreats and returns to the original state, and the chuck 34
Is opened to release the pipe material A. Then, the first
After gripping the pipe material A, the chuck 24 transfers the pipe material A to the second positioning device 36. And, similarly,
After detecting the bead of the pipe material A by the second positioning device 36 and positioning the processing position, the pipe material A is moved forward while being gripped by the chuck 34, and the other end of the pipe material A is pressed.
Drill with 35. At this time, the first chuck
Reference numeral 24 releases the pipe material A and returns to the original state at the same time, and the second chuck 25 is positioned at the same position. When the boring process is completed, the second positioning device 36 retreats and returns to the original state, and the chuck 34 is opened to release the pipe material A. Then, after the second chuck 25 grips the pipe material A, the second chuck 25 transfers the pipe material A to the first and second projection welding machines 38 and 39, and places both ends of the pipe material A on the lower electrode 41. At this time, the second chuck 25 places the pipe material A on the lower electrode 41 and, at the same time, returns to the position of the second positioning device 36 in an open state, and the third chuck 26 is positioned at the same position. Then, after the crossed brace pins 3 sent out from the parts feeder 42 are supplied to the respective upper electrodes 40 by the chuck hand 43, current is applied and pressurized to perform projection welding, thereby completing the manufacture of the pillar 2 (fifth embodiment). See figure). When the production of the pillar 2 is completed, the third
The chuck 26 grasps the pillar 2 and transfers it to the discharge unit,
The pedestal 2 is discharged by the opening operation. As shown in FIG. 1, the generated pillar 2 is assembled by a known means to form a building 1.

Hereinafter, similarly, the pipe material A is intermittently sent out, and the first
Or 3rd chucks 24, 25, 26, while moving with projections or drilling, drilling, and crossed strut pins 3.
And the pillar 2 is automatically manufactured.

Although the leg 2 shown in the above embodiment is provided with a projection or a hole at one end, it may be selectively subjected to a projection or a hole if necessary. Of course, it is not necessary. At this time, the operation of the operation of the press 28 for the projection / drilling and the operation of the first positioning device 29 may be appropriately adjusted. Further, the above-mentioned embodiment uses the
However, the present invention is not limited to this, and can be applied to pillars of other framework scaffold members such as handrail pillars.

〔The invention's effect〕

According to the present invention, as described above, the metal pipe material A is intermittently sent out by the sending device 13 and is sequentially and intermittently transferred by the transfer device 20, and is opposed to both sides of the transfer device 20. One end of the pipe material A is made to have a projection and a hole as required by the disposed positioning device 29 and the press 28, and the other end is made to be drilled at an appropriate position by the press 35 and the positioning device 36, and then, A pair of projection welding machines 38 and 39 are used to perform projection welding of the cross bracing pins 3 to both ends of the pipe material A,
Attachment of cross bracing pin 3 to pedestal 2 and connection hole 6
It is possible to manufacture a beautifully finished pedestal column 2 with high efficiency, automatically, and always with uniform and stable quality.

[Brief description of the drawings]

1 shows an embodiment of the present invention, FIG. 1 is a front view showing a building 1, FIG. 2 is an enlarged sectional view of a main part of the same, FIG. 3 is a plan view showing a manufacturing apparatus, and FIG. Is a side view of the same, FIG. 5 is a sectional view showing an operation state of the projection welding machines 38 and 39, FIG. 6 is a perspective view showing an outline of a manufacturing process, and FIG. It is a partially omitted enlarged sectional view showing a state. 2… pillar, 3… crossed strut pin, 4… seat, 13…
Sending device, 14… Guide rail, 20… Transport device, 24
· 25 · 26 ··· Chuck, 28 ··· Press, 29 ··· First positioning device, 35 ··· Press, 36 ··· Second positioning device, 38
・ 39 ... Projection welding machine, 42 ... Parts feeder, 43 ... Chuck hand, A ... Pipe material.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koji Okazaki 9-7 Kuroharashinmachi, Neyagawa-shi, Osaka Koyo Machinery Industry Co., Ltd. Osaka Plant (72) Inventor Tatsuo Kakizaki 1-23 Masugata, Tama-ku, Kawasaki-shi, Kanagawa No. 1 Inside Dengensha Seisakusho Co., Ltd. (72) Inventor Junichi Taniguchi 1-23-1 Masugata, Tama-ku, Kawasaki City, Kanagawa Prefecture No. 1 Inside Dengensha Seisakusho Co., Ltd. (72) Inventor Tadashi Morita Tama-ku, Kawasaki City, Kanagawa Prefecture No. 1-23-1, Masugata Inside Dengensha Seisakusho Co., Ltd. (56) References Jikken 38-26127 (JP, Y1)

Claims (2)

(57) [Claims] 1. A metal pipe material A of a required length is intermittently sent out and sequentially transferred by a transfer device 20 equipped with chucks 24, 25, and 26 to one end of the pipe material A by a press 28 as necessary. Along with the projection and drilling, the other end is punched with a press 35, and then the crossed bracing pin 3 with the seat 4 with the projection is welded with the projection welders 38 and 39. Method of manufacturing pillars for scaffolding members such as building. 2. An aligned metal pipe material A is used as a guide rail.
A device 13 for sending out intermittently in sequence along 14, a chuck 24
A transfer device 20 for holding the pipe material A at 25 and 26 and intermittently transferring the same at regular intervals, and positioning devices 29 disposed on both sides of the transfer device 20 at regular intervals so as to face each other, and projecting and drilling. Press 28, punching press 35 and positioning device 3
6. An apparatus for manufacturing a pillar for a framed scaffolding member, such as a frame, comprising a pair of projection welding machines 38, 39 provided with supply means 42, 43 for crossed brace pins.