JPH0422423B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a welding device for a cross-flow fan used when manufacturing a cross-flow fan.

(Prior art) Generally, for example, a seventh blower is used as a blower for an air conditioner.
A cross-flow fan as shown in the figure is known. 7th
In the figure, 1 is the main body of the crossflow fan. This cross-flow fan main body 1 has a large number of wing parts 4 disposed between a pair of disc-shaped end plates 2 and 3. These wings 4
... are arranged in parallel along the outer periphery of the end plates 2 and 3.

By the way, in this type of fan, conventionally, the crossflow fan main body 1 is divided into a plurality of parts, for example, along the circumferential direction, and after forming the crossflow fan component parts 5 separately as shown in FIG. The cross-flow fan component parts 5 were joined and integrated by means such as welding. However, since the conventional welding device for a crossflow fan is configured to sequentially weld a plurality of crossflow fan component parts 5 one by one, it is necessary to weld a pair of adjacent crossflow fan component parts 5 one by one. I had a problem where I had to repeat the process multiple times. Therefore, there is a problem that the workability of the welding work is poor, and there is a risk that the assembly accuracy may be lowered due to repeated welding work, and there is also a problem that the welding strength is likely to vary.

(Problems to be Solved by the Invention) In the case of conventional configurations, a pair of adjacent cross-flow fan components 5, 5 had to be repeated multiple times one by one, so there was a problem that the workability of the welding work was poor, and there was a risk that assembly accuracy would decrease due to repeated welding work. There was also the problem that variations in strength tended to occur.

This invention eliminates the need to repeat the work of welding a pair of adjacent cross-flow fan components one by one multiple times when welding and integrating a plurality of cross-flow fan components that have been formed separately. It is an object of the present invention to provide a welding device for a cross-flow fan that can improve performance and prevent a decrease in assembly accuracy and variation in welding strength.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a workpiece holder for holding a welded body in which a plurality of components of a cross-flow fan main body are integrally temporarily fixed, and a substantially radial pattern around the workpiece holder. A plurality of ultrasonic vibration oscillators are disposed in the workpiece holder, and these ultrasonic vibration oscillators are held movably in the direction toward and away from the welded object of the workpiece holding section, and when welding the welded object, the ultrasonic vibration oscillator is A pressing mechanism is provided to press the sonic vibration oscillator toward the welded object.

(Function) Ultrasonic vibrations from the ultrasonic vibration oscillators are transmitted to the welded object while the plurality of ultrasonic vibration oscillators arranged approximately radially around the work holding part are pressed against the welded object, This ultrasonic vibration simultaneously welds a plurality of components of the temporarily fixed crossflow fan body.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 6. Figures 1 and 2 show the schematic configuration of the entire welding device for a cross-flow fan.
Reference numeral 11 is a mounting frame for the welding device. As shown in FIG. 3, this mounting frame 11 has a workpiece holder 12 in the center and a plurality of ultrasonic vibration oscillators 13 arranged around the workpiece holder 12. In this case, the workpiece holder 12 is provided with a lower positioning table 14 and an upper positioning mechanism 15, respectively. This lower positioning table 14 is equipped with a lower holding part 17 for positioning that holds the lower end of a substantially cylindrical welded object (work) 16 .

Further, the upper positioning mechanism 15 is provided with a support shaft 18 that is erected in the vertical direction, and a rotation arm 19 that is rotatably attached to the upper end of the support shaft 18. Furthermore, an upper holding part 20 for positioning that holds the upper end of the object to be welded 16 is disposed at the tip of the rotating arm 19. in this case,
The upper holding part 20 is held movably up and down by a first drive cylinder 21 attached to the tip of the rotating arm 19. The rotating arm 19 also has a support shaft 18.
It is held rotatably about the support shaft 18 by a second drive cylinder 23 attached via a mounting bracket 22 to the support shaft 18.

Furthermore, as shown in FIGS. 4 and 5, the welded body 16 is made by temporarily fixing a plurality of component parts 25 of a cross-flow fan main body 24 integrally with a plurality of mounting screws 26. In this case, the crossflow fan component 25 is obtained by dividing the crossflow fan main body 24 into a plurality of parts along the circumferential direction (as shown in FIG. 8). The welded body 16 is formed by combining the divided cross-flow fan components 25 in a non-welded state to form a substantially cylindrical cross-flow fan main body 24, and then forming a cross-flow fan main body 24 in a non-welded state. 25... and the end plates 27, 27 on both sides are temporarily fixed integrally by screwing appropriate parts with a plurality of mounting screws 26....

On the other hand, the ultrasonic vibration oscillating units 13 are arranged approximately radially around the welded object 16 held by the work holding unit 12. In this case, these ultrasonic vibration oscillators 13...
are arranged in the upper and lower two stages. Also,
A tool horn 28 is attached to each of these ultrasonic vibration oscillating units 13. This tool horn 28 is formed in a shape that follows the welded body 16 of the work holding portion 12. Furthermore, this tool horn 2
8 has vibration absorbing plates 29 attached thereto. In this case, as shown in FIG. 6, the vibration absorbing plates 29 are arranged at positions corresponding to the blade portions 31 between the plurality of intermediate support plates 30 protruding from the outer peripheral surface of the crossflow fan main body 24. There is. When welding the cross-flow fan main body 24, these vibration-absorbing plates 2
9 are held in contact with the blade portions 31 of the crossflow fan main body 24.

Further, the mounting frame 11 holds each ultrasonic vibration oscillating unit 13 so as to be movable in the direction toward and away from the welded object 16 of the workpiece holder 12.
A pressing mechanism section 32 is provided that presses the ultrasonic vibration oscillating sections 13 toward the welded object 16 during welding of the objects 6 to 16. This pressing mechanism section 32 includes guide rails 33 for guiding each ultrasonic vibration oscillating section 13 toward and away from the welded object 16 of the work holding section 12.
A pressing device 34 connected to each ultrasonic vibration oscillating section 13 is provided. Furthermore, the mounting frame 11 has a soundproof cover 35 that covers the entire device.
This soundproof cover 35 prevents ultrasonic waves from leaking to the outside.

Next, a welding operation for the cross-flow fan body 24 using the welding apparatus having the above configuration will be explained. When welding the cross-flow fan main body 24, first, the plurality of component parts 25 of the cross-flow fan main body 24 that are formed separately are...
are combined together in a non-welded state to form a substantially cylindrical cross-flow fan main body 24, and end plates 2 on both sides are attached to the non-welded cross-flow fan components 25.
7 and 27 are temporarily fixed together by screwing appropriate parts with a plurality of mounting screws 26. Then, the welded object 16 is inserted into the welding apparatus main body from above, and the lower end of the welded object 16 is placed on the lower positioning base 14 of the work holding part 12.
Set to . Next, each ultrasonic vibration oscillating part 13 is advanced by the pressing mechanism part 32, and the tool horn 28 is brought into pressure contact with the welded object 16, thereby fixing the welded object 16 in the lateral direction. Furthermore, the upper positioning mechanism 1
The upper holding part 2 is rotated by rotating the rotating arm 19 of 5.
0 to a position corresponding to the upper end of the welded object 16, and in this state lower the upper holding part 20 by the first drive cylinder 21, and move this upper holding part 20 to the upper end of the welded object 16. The welded body 16 is fixed in the upper and lower directions by being pressed against the parts. Finally, each ultrasonic vibration oscillator 13 oscillates ultrasonic vibrations, and the ultrasonic vibrations are transmitted to the welded object 16 via the tool horn 28 to perform welding work on the welded object 16. In this case, since the vibration absorbing plates 29 are held in contact with the blade portions 31 of the crossflow fan main body 24, the crossflow fan main body 24
During welding work, these vibration absorbing plates 29 can absorb vibrations other than the welding portion of the cross-flow fan main body 24, and can prevent cracking of the welded body 16.

Therefore, in the case of the above configuration, the plurality of component parts 25 of the crossflow fan main body 24 that are formed separately...
are assembled together in a non-welded state, and the welded body 16 is temporarily fixed together with a plurality of mounting screws 26..., and the welded body 16 is mounted on the work holding part 12 of the welding device,
A plurality of ultrasonic vibration oscillators 13 arranged approximately radially around the workpiece holder 12 are connected to the welded object 16.
Transverse flow fan main body 24 transmits ultrasonic vibration from ultrasonic vibration oscillator 13 to welded object 16 side while being pressed, and is temporarily fixed by this ultrasonic vibration.
Since the plurality of component parts 25... of the cross-flow fan body 24 are simultaneously welded, the welding work of the plurality of component parts 25... of the cross-flow fan main body 24 can be completed with only one operation. Therefore, when welding and integrating a plurality of cross-flow fan component parts 25 that have been formed separately as in the past, the troublesome work of welding a pair of adjacent cross-flow fan component parts 25, 25 one by one is required. It is possible to improve the workability of the welding work compared to the case where welding is repeated several times, and it is also possible to prevent a decrease in assembly accuracy and a variation in welding strength from occurring. Furthermore, the working time of the welding work can be shortened, and work efficiency can be further improved.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

〔Effect of the invention〕

According to the present invention, a workpiece holder is provided for holding a welded object in which a plurality of components of a cross-flow fan body are integrally temporarily fixed, and a plurality of ultrasonic vibration oscillators are arranged approximately radially around the workpiece holder. At the same time, these ultrasonic vibration oscillators are held movably in the direction toward and away from the welded object in the work holding section, and when welding the welded object, the ultrasonic vibration oscillator is moved toward the welded object side. Since a pressing mechanism is provided to press the parts, the work of welding a pair of adjacent cross-flow fan components one by one is repeated multiple times during the welding operation of welding and integrating a plurality of divided cross-flow fan components. This is not necessary, and it is possible to improve the workability of welding work, and also to prevent a decrease in assembly accuracy and variation in welding strength.

[Brief explanation of drawings]

1 to 6 show one embodiment of the present invention, in which FIG. 1 is a front view showing a schematic configuration of the entire device, FIG. 2 is a side view of the same, FIG. 3 is a plan view of the same, and FIG. 4
The figure is a half-sectional view showing the temporarily fixed state of the crossflow fan.
Fig. 5 is a side view of the same, Fig. 6 is a perspective view showing the attachment state of the vibration absorbing plate, Fig. 7 is a perspective view showing the appearance of the entire crossflow fan main body, and Fig. 8 shows the constituent members of the crossflow fan main body. FIG. 12... Work holding part, 13... Ultrasonic vibration oscillation part, 16... Welded object, 24... Cross flow fan main body, 2
5...Crossflow fan component, 32...Press mechanism section.

Claims (1)

[Claims] 1. A workpiece holder that holds a welded object in which a plurality of components of the crossflow fan main body are temporarily fixed together, and a plurality of ultrasonic vibration oscillators arranged approximately radially around the workpiece holder. , these ultrasonic vibration oscillators are held movably in the direction toward and away from the welded object of the work holding section, and when welding the welded object, the ultrasonic vibration oscillator is moved toward the welded object side. 1. A welding device for a cross-flow fan, characterized by comprising a pressing mechanism section for pressing.