JPH0211972Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an aluminum alloy brazing torch used for brazing relatively small parts.

[Conventional technology]

Conventionally, this type of aluminum alloy brazing torch has been fitted with a fixed piece that has a mixing chamber that allows gases such as propane and oxygen to be supplied through rubber hoses and to mix them at a fixed ratio. It is known that a holding jig for holding the attached parts is fixed to a mounting frame or the like, and this fixed piece is connected to the crater with a relatively long copper tube.

In such a conventional aluminum alloy brazing torch, the parts to be brazed are pre-positioned and fixed in a holding jig, a brazing material is fitted into the brazed joint, and a mixed gas of propane and oxygen is injected. By sending it through a copper pipe, flame is generated from multiple craters equipped with sparks, and this flame efficiently heats the desired joint part for a certain period of time, melting the brazing material and joining. There is.

That is, the copper tube can be bent appropriately to adjust and fix the nozzle at a desired position.

Therefore, with such conventional aluminum alloy brazing torches, heat is transferred to the copper pipe, and the copper pipe gradually hardens during use, making it difficult to adjust the position of the torch, and making it difficult to adjust the bending of the copper pipe. If you do not adjust the holding position of the parts to be brazed, the so-called burning phenomenon, in which the grain boundaries melt into the base metal, will occur, making it impossible to achieve good brazing. Was.

[Problem that the invention attempts to solve]

The present invention was devised in view of the above-mentioned problems, and is an aluminum alloy brazing method that allows easy, quick and reliable adjustment of the position of the nozzle according to the desired brazed joint part of relatively small parts. The purpose is to provide a torch for

[Means for solving problems]

In order to achieve the above object, the present invention fixes a cylindrical crater to a first bar at right angles to the axis of the crater, and makes the first bar movable and fixed in the axial direction; The second bar is connected and supported at right angles to a second bar so as to be rotatable and fixable about this axis, and the second bar is rotatably and fixable about this axis to a third bar. The third bar is connected and supported at right angles, and the third bar is movable in the axial direction and fixedly supported in the radial direction on a fixed piece having a mixing chamber for mixing gas and air. It is constructed by connecting one piece to a flexible metal tube.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

In the figure, numerals 1 and 1' are craters, and the outer periphery of this cylindrical crater 1 is held by a crater fitting 1a. A first rod 2 made of a round metal rod is fixed at its base to the upper surface of the crater mounting bracket 1a at right angles to the axis of the crater 1. Further, the crater 1 is connected to one end of a metal flexible tube 3 in the axial direction of the crater 1.

The other end of the flexible metal tube 3 is connected to a fixed piece 4 by bending the flexible metal tube 3.

Incidentally, like the crater 1, the crater 1' is also fixed to the first bar 2'.

A mixing chamber (not shown) for mixing propane gas and oxygen is provided in the fixed piece 4, and two sets of copper pipes 5, 6, 5', 6' for supplying propane and oxygen are installed in the mixing chamber. It is connected so that it leads to.

Furthermore, a mounting hole 4a is formed in the square portion of the fixing piece 4 for fixing it to a pedestal (not shown) or the like.

A through hole 4c provided with a sliding key 4b is formed in the center of the fixed piece 4, and a third bar 7 is fitted into the through hole 4c so as to be movable and fixed in the axial direction. That is, the third bar 7 is provided with a key groove 6a corresponding to the key 4b, so that the third bar 7 can move along the key 4b, and can also press the key 4b from the top surface of the fixed piece 4. A fixing bolt 7 is provided on the upper surface of the fixing piece 4 so that the third bar 7 can be fixed at a desired position.

A cut groove 7a is formed at the tip of the third bar 7, and a through hole 7b is formed in the vertical direction.A connecting rod 8 is inserted into the through hole 7b, and the upper end of the connecting rod 8 A cut groove 8a is provided in the bar, a through hole 8b is provided horizontally intersecting the third bar 7 at a constant interval, and a fixing bolt 8c is provided to tighten the groove width of the cut groove 8a. ing.

A second bar 9 is inserted into the through hole 8b,
A second bar 9 can be fixed to the connecting rod 8 with a fixing bolt 8c.

The second bar 9 is fixed in this way, and
By loosening the fixing bolt 8c, the second bar 9 can be rotated around this axis.

Cut grooves 9a, 9a' are provided at both ends of the second bar 9,
Through holes 9b, 9b' and fixing bolts 9c, 9c' are provided, and the above-described first rods 2, 2' are movable in the axial direction of the through hole 9b axis in the through holes 9b, 9b', respectively. The first rod members 2, 2'
are configured to be rotatable and fixed around their respective axes.

[Effect]

Since the present invention is constructed as described above, ignition is carried out in order to heat a desired brazed joint part of a part to be brazed (not shown) attached to a holding jig without causing burning. When adjusting and positioning the crater 1, if the crater 1 is connected only to the metal flexible tube with respect to the fixed piece 4, the crater 1 itself can move freely but cannot be fixed. . Therefore, this crater 1
is connected to and supported by the fixed piece 4 via the first bar 2, second bar 9 and third bar 7, and the third bar 7 can be attached to the desired position by loosening the fixing bolt 7. The position of the second bar 9 can be adjusted in the front and back direction with respect to the brazed joint, and by loosening the fixing bolt 8c, the angle of inclination perpendicular to the desired brazed joint can be adjusted. It can be adjusted arbitrarily, and the first bar 2
By loosening the fixing bolt 9c, the angle of inclination in the horizontal direction with respect to the desired brazed joint part can be adjusted as desired, and the movement in the vertical direction can also be adjusted. It can be freely adjusted with respect to the brazed joint portion, and the position-adjusted crater 1 can be fixed by tightening each of the fixing bolts 7, 8c, and 9c.

[Effect of idea]

As mentioned above, the present invention can adjust and position the brazed parts covering the crater with respect to the desired brazed joint part, so there is no need to adjust and move the holding position of the brazed parts as in the past, and it can be used for a long period of time. It is possible to easily and quickly finely adjust the position of the crater, and it is possible to perform good brazing work on relatively small parts easily, quickly, and reliably.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the present invention. 1, 1'... Crater, 2, 2'... First bar, 3
...Metal flexible tube, 4...Fixed piece, 7...Third bar, 9...Second bar.

Claims (1)

[Scope of utility model registration request] A cylindrical crater is fixed to a first bar at right angles to the axis of the crater, and the first bar is movable and fixed in the axial direction and rotatable and fixed around the axis. is connected and supported at right angles to a second bar, and the second bar is connected and supported at right angles to a third bar so as to be rotatable and fixed about the axis; The bar is movable in the axial direction and fixedly supported in the radial direction by a fixed piece having a mixing chamber for mixing gas and air, and the crater is connected to the fixed piece by a flexible metal tube. An aluminum alloy brazing torch characterized by: