JPS5834224B2 - Brazing filler metal setting method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a method and apparatus for setting a brazing material on a sheet metal impeller for a torque converter in preparation for brazing connection between members when manufacturing the impeller.

Various methods of this kind have been known in the past, but in this case, the brazing material is generally a wire brazing material or a paste brazing material, and with these methods, it is not always easy to set the brazing material. It is inevitable that it will be inefficient.

The object of the present invention is to obtain a method free of such inconveniences, and a plurality of blades are disposed radially within the annular gap between the outer shell and the inner core, and the blades are connected to the outer shell and the inner core. The workpiece is temporarily bonded to the core.
In preparation for brazing and bonding, in a type that sets a brazing material, the workpiece is placed on the outer circumferential side and the inner circumferential side of the open end on the outer circumferential side of the annular gap, and a adhesive liquid is freely discharged in front of the workpiece. The workpiece and the nozzle are arranged to face each other, and at least one of the workpiece and the nozzle can be rotated about the central axis of the workpiece to apply the adhesive liquid to the open end, and then powder wax is applied to the open end. The material is applied so that it adheres to the material.

The purpose of the second invention is to obtain a device that is well adapted to this, and in which a plurality of blades are arranged radially within the annular gap between the outer shell and the inner core, and the blades are connected to the shell. In a type in which a brazing material is set in preparation for brazing to a workpiece temporarily bonded to the core, a holder for removably holding the workpiece in the front is attached to the lower end of the arm that can freely move back and forth. The arm is rotatably arranged in a slightly forward tilted position, and has at least two adhesive liquid nozzles facing the upper and lower parts of the opening end on the outer peripheral side of the annular gap in front thereof, and further below the retracted position of the arm. A container containing powder brazing filler metal is provided on the side so that it can be raised and lowered freely.

An example of implementing the present invention will be explained with reference to the attached drawings.

In the drawings, 1 indicates an outer shell, and 2 indicates an inner core, which is disposed on a blade 4 in an annular gap 3 between the outer shell 1 and the inner core 2, and is connected to the shell 1 by a retainer 5, claw pieces 6, etc. It was temporarily bonded to the core 2 to obtain a semi-finished blade wheel made of sheet metal as a whole, that is, a work 7.

Next, a brazing material is set in the workpiece 7 in preparation for the brazing connection between each member. According to the present invention, the brazing material is a powder brazing material, and this is set as follows. I decided to do so.

That is, the work 7 is placed at the open end 3a on the outer peripheral side of the annular gap 3.
In front of the opening end 3a, liquid nozzles 8, 8 are provided which face the upper and lower sides of the opening end 3a, that is, the outer circumferential side 3b and the inner circumferential side 3c, and the adhesive liquid 9 can be freely discharged thereto. The workpiece 7 is passed through the nozzle 8 between the outer circumferential side 3b and the inner circumferential side 3c.
From the state of contacting the workpiece 7 and the nozzle 8°8
At least one of the workpieces 7 is rotated about the central axis X-X of the workpiece 7, so that the outer circumferential side 3b and the inner circumferential side 3c are coated with the adhesive liquid 9 over their entire circumferences. I made it so that

In other words, the upper and lower ends of the edges of each blade 4 facing the open end 3a are coated with the melt 9.

The excess portion of the melt is then removed by shaking off or further dried, and then the workpiece 7 is applied with powder brazing material 10 at the open end 3a, so that the open end 3a is coated with the powder brazing material 10. The brazing filler metal 10 is set.

The workpiece 7 is then in an upward position, that is, the shell 1 is on the lower side,
The core 2 is heated in a heating furnace in a position where the core 2 is on the upper side, and the brazing filler metal 10 is guided over its entire length in the gaps between the edges of each blade 4 to form a brazing bond thereto. can get.

Next, to explain the device, a holder 11 that removably holds the work 7 on the front side is prepared, and the holder 11 is tilted slightly forward with a shaft 14 to the front of the lower end of an arm 13 which can be moved back and forth by a hydraulic cylinder 12. This arm 1 is pivoted in the posture.
The arm 13 is supported by a shaft 14 in a slightly forward tilted position on the front surface of the lower end thereof, and is freely driven by a motor 15 on the back side of the arm 13, and the nozzles 8, 8 described above are provided on the machine stand 16 in front of the arm 13. As the arm 13 moves forward, the workpiece 7 comes into contact with the nozzles 8, 8 at its open end 3a, and in this state, the workpiece 7 is moved through the holder 11.
give rotation to.

This rotation is at least one rotation, and the nozzle 8. l The nozzles 8, 8 may or may not be offset from each other in the circumferential direction as clearly shown in FIG. I made it.

Further, the powder brazing filler metal 10 is prepared by being stored in a container 19 in advance, and is prepared under the workpiece 7 in the retracted position of the arm 13 so as to be able to be raised and lowered by a hydraulic cylinder 20. According to the upward movement of the container 19, the workpiece 7 is immersed at least in its lower part into the brazing material 10 in the container 19, and then the workpiece 7 is driven and rotated through the holder 11. If so, the brazing filler metal 10 covering the entire circumference
This made it possible to obtain a good adhesion.

In this way, according to the present invention, adhesive liquid is applied to the workpiece by a nozzle at the open end on the outer circumferential side of the annular gap, and then powder brazing material is applied to this, making it possible to easily and reliably set the brazing material. This has the effect of eliminating the above-mentioned disadvantages of the conventional method.

Furthermore, according to the second invention, at the forward position of the arm, the adhesive liquid and
Next, a powder brazing material is applied at the retracted position, and the work is simple and highly efficient, making it suitable for mass production, and the structure is simple and can be obtained at low cost.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view illustrating an example of the method and apparatus of the present invention, Fig. 2 is an enlarged front view of the part, and Fig. 3 is a cross section taken along the line ■-■. Plan. 1... Outer shell, 2... Inner core, 3...
Gap, 4...Blade, T...Work, 3a...
Opening end, 3b...outer circumference side, 3c...inner circumference side, 8, 8
...Nozzle, 9...Adhesive liquid, X-X...Axis line, 1
0...Powder brazing filler metal.

Claims (1)

[Claims] 1. A plurality of blades are arranged radially within an annular gap between an outer shell and an inner core, and the blades are temporarily bonded to the shell and the core to form a work piece to be cut using wax. In preparation for adhesion, in a type in which brazing material is set, the workpiece is placed between the outer circumferential side and the inner circumferential side of the open end on the outer circumferential side of the annular gap, and each of the adhesive liquid can be freely discharged in front of the workpiece. The adhesive liquid is applied to the open end by facing the nozzle and at least one of the workpiece and the nozzle is rotated about the central axis of the workpiece, and then powder brazing material is applied to the open end. A method of setting brazing filler metal by applying a substance to it to make it adhere. 2 A plurality of blades are arranged radially within the annular gap between the outer shell and the inner core, and these are temporarily bonded to the shell and the core in preparation for brazing to the workpiece to be cut. In the case of a type in which the workpiece is set, a holder for removably holding the workpiece in the front is provided at the lower end of an arm that can freely move back and forth so as to be rotatable slightly tilted forward, and a holder is provided in front of the holder on the outer circumferential side of the annular gap. A brazing material comprising at least two adhesive liquid nozzles facing each other at the upper and lower parts of the open end of the arm, and further provided with a container for storing powder brazing material below the retracted position of the arm, which can be raised and lowered. Set equipment.