JPS58112652A - Removing device for oxide film - Google Patents

Abstract

PURPOSE:To remove an oxide film safely and surely, by providing a sweeping member to a chain which move in a horizontal direction above a tank contg. brazing filler metal, and sweeping away the oxide film on the surface of the brazing filler metal with the sweeping member according to the movement of the chains. CONSTITUTION:A speed reducer 3, a revolving shaft 5 and a sprocket 6 are driven by turning and driving a motor to rotate and travel a pair of chains 8 in a horizontal direction. The supporting bars 26 and plates 11 installed to the chains 8 move in a horizontal direction and force the oxide films produced on the surface of molten solder 15 away in an arrow direction 31 as the plates 11 move downward, thereby sweeping the oxide films into a dust receiver 16 in a solder tank 14. Thereafter, the plates 11 move upward around the sprocket 7 and when the projecting parts of the bars 26 abut on a limit switch 13, the motor stops running and the chains 8 stop traveling.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oxide film removal device for removing an oxide film generated on the surface of molten solder in a solder bath.

As a method of soldering electronic components to a printed circuit board,
This is done by manually dipping the printed circuit board into molten solder, which is pooled in a solder bath.

Incidentally, an oxide film is formed on the surface of the molten solder due to air oxidation, and the oxide film must be removed because it deteriorates soldering properties.

Conventionally, this oxide film was removed manually using a hef made of corrugated cardboard inside a stainless steel plate. However, this method has the drawback that it is difficult to completely remove the oxide film and there is a risk of burns to the operator.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and provides an oxide film removal device that safely and reliably removes an oxide film generated on the surface of a brazing filler metal in a tank that stores the brazing filler metal. The purpose is to

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

In Figures 1 and 2, (1) is placed on a molten solder tank (b) that stores solder (2), which is a brazing material, and (ri is placed on this paste (1) in a round shape). (3) is a speed reducer that reduces the rotation speed of the motor (2); (4) is a transmission device driven by the rotation of the motor (2).

This transmission device consists of a pair of front and rear rotating shafts (5), @ supported by bearings provided on both upper surfaces of the tank (b), and a pair of rotating shafts (s), @o at both ends. A pair of left and right chains (8) are installed between sprockets (6) and (7), which are fixed respectively.
), @, and a camp ring (4) that connects the motor (2) and the rotating shaft (5).

(2) is a movable device that moves in the horizontal direction above the 0 fathom, with a pair of left and right chains (It), one end of the support rod (4) installed at the gate, and one end of the support rod (4). The part protrudes laterally from the chain (8).

As shown in Section 2, at the lower end of this support rod, a piece (11) is rotatably suspended by a holding metal fitting (2) to serve as a sweeping material. As it moves in the direction, it moves slightly tilted to sweep away only the oxide film formed on the surface of the molten solder, as shown in FIG.

α kettle is a weight attached to both ends of the support rod (4), (
The limit switch is provided on the base (1) and has nine limit switches.
The protrusion @ω of the support rod (4) turns it on and off to operate the motor (2) to stop. (to) is molten solder (to)
It is assumed that the oxide film is accommodated.

Next, the operation of the above configuration will be explained.

Now, turn on the Funto switch (not shown) and turn on the motor (
Rotation drive. This rotation is transmitted to the reducer (3), rotating shaft (5), sprocket (6), and chain (8).
, @ rotates in the horizontal direction. Along with this, the support rod (2) and play (U) installed on the chain (8), H, as shown in FIGS. 2 and 3,
Move horizontally.

At this time, by moving below the plate (b) shown in Figure 3, the grate (2) pushes the oxide film formed on the surface of the molten solder (2) in the direction of the arrow, and the solder bath. 0 → Sweep into the inner tomi-receiver (14).

In this way, the nine plate (6) attached to the support rod (21) removes the oxide film generated on the surface of the molten solder (2) in the solder bath (B), and then removes the sprocket (7).
), and as it moves upward as shown in Figure 2, it passes a limit switch (11) and activates it, stopping the rotation of the motor (2).

In other words, according to the above configuration, the operator can safely and safely do not bring his/her hands close to the molten solder (to) in the solder bath (b).
Moreover, the oxide film on the surface of the molten solder can be reliably removed, and workability can be greatly improved.

In addition, sprockets (6) and (7) are flat and Vt"
A pulley with a groove may be used, and the chain (8) may be a belt.

A rope or the like may be used.The weight (G) may be constructed integrally with the plate (B).

As described above, according to the present invention, it is possible to safely and reliably remove the oxide film generated on the surface of the brazing material.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an oxide film removal apparatus according to an embodiment of the present invention, FIG. 2 is a side sectional view taken along the Moum line in FIG. 1, and FIG. 3 is a cross section showing one stroke in FIG. 2. It is a diagram. (2)...driver, (9)...plate, (b)...
...tank, (to) ... brazing filler metal (molten solder), (2)
...Movable device. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] (1) A drive machine, a movable device that is linked to the drive machine and moves horizontally above the cypress that stores the brazing material, and a movable device that is attached to this movable device and moves horizontally to store the brazing material. An oxide film removing device comprising: a cleaning material for sweeping away a nona-oxide film formed on the surface of the oxide film.