JPH026051A - Method of cleaning soldering iron of automatic soldering machine - Google Patents

Abstract

PURPOSE:To allow the removal of a carbonized flux by brushing an iron tip with a brush implanted to the inside surface of an eccentrically rotating drum at every prescribed number of soldering operations. CONSTITUTION:A driving unit 10 retreats the soldering iron 1 over a space enclosed by a cage 30 and brings the soldering iron 1 near to an air nozzle 31 while a work 5 is transported upon ending of one time of the soldering operation. Cold air is then injected from the nozzle 21 to blow away impurities together with the remaining molten solder from the iron tip. The driving unit 10 retreats largely and descends when the soldering operations attain the prescribed number of times; thereafter, the unit advances to insert the tip of the soldering iron 1 into the space enclosed by the brush 42 implanted to the inside surface of the drum 41 in a brushing unit 4. Since the drum 41 rotates eccentrically, the inside surface of the brush 42 comes into successive contact with the entire circumference of the iron tip. The carbonized flux at the iron tip is thus surely chipped away.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a method for cleaning a soldering iron for automatic soldering.

[Conventional technology]

Cleaning the iron tip is a very important work point in soldering work, and reliable automatic cleaning is especially required for automatic soldering on a rocky shore. As a cleaning method for automatic soldering, there is conventional cleaning using an upstream air purge method. This involves blowing cold air onto the tip of the iron to blow away any impurities along with the melted solder remaining on the tip.
Perform each soldering operation.

[Problem to be solved by the invention]

However, the air purge method cannot blow away the carbonized 7 lux, and automatic soldering, which repeats itself many times, has many problems on the rocks. The present invention has been made in view of the above points, and its purpose is to ensure that the tip of the soldering iron can be cleaned and to achieve highly reliable soldering work. The automatic soldering machine is capable of providing a way to clean the soldering iron. [Means for Solving the Problems 1] According to the present invention, an air purge is performed by blowing cold air onto the tip of a soldering iron for each soldering operation, and the tip of the soldering iron is eccentrically rotated for each soldering operation for a predetermined number of times. The iron tip is brushed with a brush installed on the inner surface of the drum. [Function] According to the present invention, by the time carbonized blacks accumulate on the iron tip, the entire circumference of the iron tip is brushed by the brush installed on the inner surface of the eccentrically rotating drum. Brushing is reliably removed. [Example] The present invention will be described below in detail based on the illustrated device. 7-2
A pair of drive units are placed on the sides of the transport device 50 of No. 5) i o
, io are arranged in parallel, and 1 is attached to each tip of each drive unit (10, 10) with solder iron for performing back-and-forth movement and up-and-down movement. A cleaning device 2 is disposed near the transport device fi50. This cleaning device 2 includes an air parts unit 3,
The air parts unit 3 consists of a cake 30 placed on the side of the conveyor fi50 and a pair of air nozzles 31 and 31 placed inside this cage 30. 31.3
1 is supplied with cold air through an air supply W32. The brushing unit 4 includes a pair of drums 41.4 that are rotationally driven by a geared motor 40 whose speed can be controlled.
A large number of brushes 42 made of ultra-fine stainless steel wire are embedded in each inner surface of the brush 1. Boo 945 attached to the output shaft of the geared motor 40
and a pulley 47 provided on a rotating shaft 46 to which the k ram 41 is attached are connected by a belt 48, so both drums 41 and 41 are driven to rotate. It is mounted eccentrically with respect to the rotating shaft 46. However, in the automatic soldering on the shore, the drive unit 10 moves forward every time the workpiece 5 is sent by the transport device 50 to perform the soldering work, and one soldering work is completed. While the workpiece 5 is being transported, the drive unit 10 moves the soldering iron 1 back to the space surrounded by the cake 30 and inserts the soldering iron 1 into the air nozzle 31.
be located near the At this time, cold air is injected from the air nozzle 31 to blow away impurities along with the melted solder remaining on the iron tip. In soldering, such air purge is performed for each operation, and in soldering, the operation is performed a predetermined number of times, for example, once.
When the number of times reaches 00 times, the drive unit 10 moves back greatly and descends, and then moves forward to brush the brushing unit 4 (into the space surrounded by the brushes 42 installed on the inner surface of the drum 41). , insert the tip of the soldering iron 1. Since the drum 41 rotates eccentrically as described above,
As the drum 41 rotates, the inner surface of the brush 42 comes into contact with the entire circumference of the iron tip, as shown in FIG. , can be removed reliably. When the brushing work is completed, the drive unit 10 again repeats the soldering work and the cleaning work by air purge, and when the soldering work reaches a predetermined number of times, cleaning is performed by the brushing unit 4 again. [Effects of the Invention] As described above, in the present invention, the cleaning by air purge is repeated for each soldering operation, and when the soldering operation reaches a predetermined number of times, it is implanted on the inner surface of the eccentrically rotating drum. Since the soldering brush brushes the entire circumference of the tip, the carbonized black is reliably removed, and therefore reliable automatic soldering can be achieved. .

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a device according to an embodiment of the present invention, Fig. 2 is a cutaway plan view of the same, Fig. 3 is a cutaway front view of the same, and Fig. 4
The figure is a front view of the drum, and Figure 5 is a front view showing the same rotating operation as above, where 1 is a soldering iron and 3 is an air bar shank).
, 41t7' lashing unit, 41 is a drum, 42
indicates a brush. Agent Patent Attorney Ishi 1) 议 Figure 7, Figure 2, Figure 3

Claims (1)

[Claims] (1) An air purge is performed by blowing cold air onto the tip of the soldering iron after each soldering operation, and a brush installed on the inner surface of the drum, which rotates eccentrically, is used to clean the tip of the soldering iron after every required number of soldering operations. A method of cleaning a soldering iron for an automatic soldering machine, which is characterized by brushing.