JPH0641748Y2 - Automatic fin joining device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to the end joining of strip fins supplied to a spiral fin welder applied to the production of spiral fin tubes such as heat exchangers. The present invention relates to an automatic fin joining device.

[Conventional technology]

Conventionally, when manufacturing a spiral fin tube such as a heat exchanger, as shown in the perspective view of FIG. 4, while rotating the tube 2 held by the tube rotating carriage of the spiral fin welding machine 1, the outer periphery of the tube 2 is rotated. The band-shaped fins 3 are wound around the spiral, and the band-shaped fins 3 are energized to weld the tube 2 and the band-shaped fins 3. At this time, the band-shaped fins 3 are supplied by a small size of about 100 kg of the band-shaped fins 3. The tip of the coil 4 is manually abutted with the trailing end of the preceding one, and the fin joint 13 is performed to join the welded portion by manual welding and to maintain the grinder, and this is repeated to make a large coil 14 of about 1000 kg. To manufacture.
Then, the large-sized coil 14 is set in the uncoiler, that is, the band fin feeder 15 by stopping the spiral fin welder 1, and then the band fin 3 is spirally fed around the tube 2 while the spiral fin welder 1 is operated. ing.

However, in the method of supplying the band-shaped fins 3 to the spiral fin welding machine 1 as described above, since the fin joints 13 are all manually operated, the fins from the fin joints are not properly processed during the spiral fin welding operation due to poor condition of the fin joints. Cuts, sparks, etc. occur, and as a result, operation of the spiral fin welder 1 is stopped, repair work due to tube damage,
It is necessary to replace parts in the welded part.

[Problems to be solved by the device]

The present invention has been proposed in view of such circumstances,
Fin jointing, welding, and welding part maintenance are all performed automatically to unify the fin joint conditions with high quality, and eventually stop the operation of the spiral fin welder to prevent fin breakage and repair the tubes. An object of the present invention is to provide an automatic fin joining device that reduces the number of man-hours by reducing parts replacement.

[Means for Solving the Problems]

Therefore, the present invention is a process of supplying a strip-shaped fin from a small coil to a spiral fin welding machine that welds the fin and the tube by spirally winding the strip-shaped fin around the rotating tube and energizing the fin. A device for splicing the trailing end of the preceding coil and the leading end of the trailing coil of the band-shaped fins that are arranged and sequentially supplied, and a fin feeding device that draws out the leading end of the trailing coil that is waiting, and the band-like shape of the leading coil that is being welded A fin cutting device that cuts the fin rear end and the strip-shaped fin tip of the trailing coil in standby at right angles to the fin longitudinal direction, and a fin welding device that welds the abutted fin end groove. And a fin forming device for processing the welded portion into an appropriate shape.

[Action]

In the automatic fin splicing device of the present invention, the rear end of the band-shaped fin of the preceding coil which is first unwound and being welded by the spiral welding machine is cut at a right angle in the longitudinal direction by the fin cutting device to form a groove, and Similarly, the tips of the band-shaped fins wound around the row coil are cut by a fin cutting device to form a groove, and the ends of both band-shaped fins are abutted and then welded by, for example, non-filler TIG welding with a fin welding device. After that, the fin welded portion is processed into a predetermined proper shape by a fin forming device.

〔Example〕

An embodiment of the automatic fin joining device of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the entire device, FIG. 2 is an explanatory diagram of an operating procedure of the device, and FIG. 3 is an operating process of a fin welding device. FIG.

In FIG. 1, in a process line for sequentially supplying strip-shaped fins from a small coil (not shown) to a spiral fin welder (not shown), the spiral coil of the preceding coil unwound first around the tube is being welded by the spiral fin welder. A centering clamp 5 and a fin clamp 6 are arranged at the rear end position of the band-shaped fin 3a in front and rear direction, and a centering clamp for the band-shaped fin 3b of the trailing coil which is on standby at an appropriate distance from them. 7 are arranged.

Further, the fin feeding device 8 is installed so as to be movable between the front and rear positions of the centering clamp 7, and the process line is sandwiched ahead of the fin feeding device 8 so that the rear end of the band-shaped fin 3a and the tip end of the band-shaped fin 3b are aligned in the fin longitudinal direction. A fin cutting device 9 that cuts at a right angle to form a welding groove and a fin welding device 10 that welds the welding groove are arranged so as to be capable of advancing and retreating, and further a welding portion is properly shaped at the tip. Fin forming equipment
Eleven is also installed so that it can move forward and backward.

In such a device, the operation procedure will be described with reference to FIG. 2. First, in FIG. 2 (I), after the strip-shaped fin 3a of the preceding coil being welded by the spiral fin welder previously wound, After the edge is detected, it is clamped by the centering clamp 5 for centering and then fixed by the fin clamp 6.

Next, in FIG. 2 (II), the fin cutting device 9 advances to cut the ends of the preceding band-shaped fins 3a at right angles in the longitudinal direction at the fin matching position to form a groove.

Next, in FIG. 3 (III), the tip of the strip-shaped fin 3b wound around the trailing coil is conveyed to the fin cutting device 9 by the fin feeding device 8, clamped by the centering clamp 7, and then cut to form a groove. To do.

Further, in FIGS. 4 (IV) and (V), after the fin cutting device 9 is retracted, the fin welding device 10 is advanced to perform fin welding 12 by non-filler TIG welding on the butt groove. This welding is done by the operating process of FIG.

In Fig. 2 (VI), the fin welding device 10 is retracted after the welding is completed, and in Fig. 7 (VII) and (VIII), the fin forming device 11 is lowered to process the fin welded portion into a predetermined proper shape. .

Thus, according to such an apparatus, in the process of supplying the band-shaped fins from the small coil to the spiral fin welder, the centering clamp 5 and the fin clamp 6 for the preceding band-shaped fins 3a and the fin-shaped clamps 3 for the trailing band-shaped fins 3a are provided. The fin feeding device 8, the fin cutting device 9, the fin welding device 10 and the fin forming device 11 arranged between the centering clamp 7 and the centering clamp 7 automatically form fin end groove and butt welding, and further welded portion. Since the work is performed, the fin joint work by man is not required, rationalization is achieved, and further, the fin breakage from the fin joint portion is prevented during the spiral fin welding, and the accompanying work is greatly reduced.

[Effect of device]

In short, according to the present invention, a process of supplying a band-shaped fin from a small coil to a spiral fin welder that spirally wraps a band-shaped fin around a rotating tube and energizes the fin to weld the fin and the tube Is a device for joining the trailing end of the preceding coil and the leading end of the trailing coil of the strip-shaped fins that are sequentially supplied to the fin feeding device that pulls out the leading end of the trailing coil that is waiting, and the leading coil that is being welded. A fin cutting device that cuts the rear end of the band-shaped fin and the end of the band-shaped fin of the trailing coil in standby at right angles to the fin longitudinal direction, and a fin welding device that welds the fin ends that are abutted, Since it has a fin forming device that processes the part into an appropriate shape, fin butting, welding, and welding part maintenance are all performed automatically, An automatic fin joint device that reduces the number of man-hours by reducing the number of man-hours by unifying the condition of the joints of the fins with high quality, and by stopping the fins to prevent operation stop of the spiral fin welder, tube repair work, parts replacement, etc. Therefore, the present invention is extremely useful in industry.

[Brief description of drawings]

FIG. 1 is a perspective view of the entire apparatus in an embodiment of the automatic fin joining apparatus of the present invention, FIG. 2 is an explanatory view of an operating procedure of the same apparatus, and FIG. 3 is an explanatory view of an operating process of the fin welding apparatus in the same. is there. FIG. 4 is a perspective view showing a conventional fin joining operation. 1 ... Spiral fin welder, 2 ... Tube, 3 ...
… Strip-shaped fins, 4 …… Small coil, 5 …… Centering clamp, 6 …… Fin clamp, 7 …… Centering clamp, 8
...... Fin feeding device, 9 ...... fin cutting device, 10 ...... fin welding device, 11 …… fin forming device, 12 …… fin welding.

Claims (1)

[Scope of utility model registration request] 1. A process for supplying a band-shaped fin from a small coil to a spiral fin welding machine, in which a band-shaped fin is spirally wound around a rotating tube and electric current is applied to the fin to weld the fin and the tube. Which is a device for joining the trailing end of the preceding coil and the leading end of the trailing coil of the band-shaped fins, which are sequentially supplied, and a fin feeding device for pulling out the leading end of the trailing coil in standby, and the band-shaped fin of the leading coil being welded A fin cutting device that cuts the rear end and the tip of the strip-shaped fin of the trailing coil in standby at right angles to the fin longitudinal direction, a fin welding device that welds the abutted fin end groove, and the welded part. An automatic fin joining device, comprising: a fin forming device that processes into an appropriate shape.