JPH11170038A - Metal wire cleaning equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metallic wire cleaning device capable of removing the oxidized film on a surface with simple constitution. SOLUTION: The cleaning device 10 for a metallic wire, such as wire solder 12, has a peeling means, such as wire brush, for mechanically peeling the oxidized film on the metallic wire surface and a means for cleaning the surface of the metallic wire by a detergent, such as org. solvent. If this device is applied to the cleaning of the wire solder 12, the oxidized film of the wire solder just prior to the use for soldering may be automatically and surely removed and the improvement in soldering work efficiency and the improvement in the reliability of soldering are resulted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a metal wire cleaning apparatus, and more particularly to a metal wire cleaning apparatus capable of removing an oxide film on the surface of a metal wire such as a wire solder with a simple structure.

[0002]

2. Description of the Related Art Conventionally, when an operator performs a soldering operation using a soldering iron, wire solder, which is a metal wire wound on a bobbin, has been used as it is. However, the surface of the solder is covered with an oxide film over time, and if it is used as it is, the soldering will be successful. Therefore, in order to remove the oxide film, each time the operator cleans the surface of the wire solder with absorbent cotton or the like moistened with an organic solvent.

[0003]

In the above-mentioned conventional manual method for removing an oxide film, there are problems that the working efficiency is low and the oxide film cannot be reliably removed. SUMMARY OF THE INVENTION It is an object of the present invention to provide a metal wire cleaning apparatus which can solve the above-mentioned problems of the prior art and can remove an oxide film on a surface with a simple configuration.

[0004]

According to the present invention, there is provided a metal wire cleaning apparatus comprising: means for mechanically removing an oxide film on the surface of the metal wire; and means for cleaning the surface of the metal wire with a cleaning agent. It is characterized by. ADVANTAGE OF THE INVENTION According to this invention, the oxide film of metal wires, such as wire solder immediately before use for soldering, can be removed automatically and reliably.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a state of a soldering operation using a wire solder cleaning apparatus to which the present invention is applied. The oxide film on the surface of the wire solder sent from the bobbin 11 around which the wire solder is wound is removed while passing through the solder cleaning apparatus 10 of the present invention.

[0006] The operator can use the wire solder 1 from which the oxide film has been removed.
The soldering operation of, for example, the printed circuit board 14 is performed by the soldering iron 13 using the soldering iron 2. When the wire solder is further required, when the foot switch 15 under the foot connected to the cleaning device by the cord 16 is depressed, the wire solder 12 is sent out of the solder cleaning device 10 at a constant speed only while the foot is depressed. It has become.

FIG. 3 is a side view and a top view showing the structure of one embodiment of the solder cleaning apparatus of the present invention. The wire solder 30 with the oxide film input from the left side of the figure first passes between the rollers 33 and 34, which are provided with a metal brush as a means for removing the oxide film, via the guide rollers 30 and 31. In order to apply a certain tension to the wire solder, the guide rollers 31 and 32 may be made of a non-slip material to sandwich the solder and a brake device may be provided on the roller shaft.

The rollers 33 and 34 are set apart from each other by a distance of about a radius so as not to contact each other. Then, it is driven by the motor 50 via the belt 53 and rotates in a direction opposite to the traveling direction of the wire solder, and acts to scrape off the oxide film on the solder surface by the metal brush.

FIG. 2C is a front view showing the configuration of the rollers 33 and 34 equipped with a metal brush. A brush made of a metal wire 26 is sandwiched between the disc members 21 and 22 so that the shaft 2
0. Since the wire solder is soft, the metal brush wire 26 should be thin and soft. The material of the brush may be a material or structure other than the metal brush as long as the oxide film on the curved surface can be scraped off.

The wire solder then passes between the rollers 35, 36 on which the felt members are mounted. The rollers 35 and 36 to which the felt members are attached are also installed at a distance of about a radius so that they do not come into contact with each other. Then, it is also driven by the motor 50 via the belt 53, and rotates in a direction opposite to the traveling direction of the wire solder. FIG.
(B) is a front view showing the configuration of the rollers 35 and 36, in which a thick felt member 25 is fixed to the roller shaft 20. The wire solder is peeled off while passing between the rollers 35 and 36. The removed oxide film and dust are removed.
The material of the brush may be any material or structure other than felt, such as a brush made of cloth, plastic, vinyl, or the like, as long as it can remove dust and the like on the curved surface. . Further, the rollers 35 and 36 may be omitted.

The wire solder then passes between two thick disc-shaped felt members mounted on rollers 40. The roller 40 is installed at a distance of about half the radius from the position where the wire solder passes, and is intermittently driven by a motor 50 via an electromagnetic clutch device 54 as described later. FIG. 2A is a front view showing the configuration of the roller 40, and two thick felt members 23 and 24 are fixed to the shaft 20 of the roller.

The felt member of the roller 40 is provided with a cleaning agent, for example, an organic solvent such as IPA (isopropyl alcohol).
Is infiltrated, and the wire solder is
While passing between 3, 24, it is washed with an organic solvent to remove the remaining oxide film. The material of the roller may be any material or structure other than felt, for example, cloth or sponge, as long as the wire solder can be washed by infiltrating an organic solvent. As the cleaning agent, any known cleaning agent can be used as long as it can remove an oxide film.

Since IPA is volatile, in order to replenish the roller 40 with IPA, a cock 42 provided below the IPA container 41 is slightly opened to drop IPA. The tray 43 is provided to collect the IPA dropped from the roller 40, but may be provided below the rollers 33 to 36.

The feed rollers 44 and 45 are rollers made of a non-slip material such as rubber, for example. The two rollers 44 and 45 hold the wire solder, pull it, and send it to the outside (left side in the figure). The rollers 44 and 45 are driven by a motor 50 via a belt 52 and rotate at a lower speed than the rollers 33 to 36 at the preceding stage.

Next, the configurations of the drive system and the control system will be described. When the power plug 56 of the device 10 is connected to an outlet (not shown) and the operator steps on the foot switch 15, the motor 50 rotates only during that time. Motor 5
The shaft 0 is connected to one end of a pulley for driving belts 52 and 53 and one end of an electromagnetic clutch device 54 via a speed reduction device 51. The output end of the electromagnetic clutch device 54 is connected to the roller 40.

The belt 52 drives the feed rollers 44 and 45, pulls the wire solder from the bobbin at a constant speed, and sends it to the outside. Further, the belt 53 drives the rollers 33 to 36 to perform an oxide film peeling process. Timer circuit 56
Operate / stop simultaneously with the motor 50, and immediately when the power is supplied to the timer circuit, the electromagnetic clutch device 54
Is operated only for a very short time, and thereafter, the operation is repeated for a short time every predetermined time. Such a timer circuit can be easily manufactured by those skilled in the art using an electronic circuit. Due to the operation of this timer circuit, the roller 40 rotates only slightly every predetermined time. Therefore, the average number of rotations of the rollers is smaller than the number of rotations of the feed rollers 44 and 45. Then, the rotation of the roller 40 causes the wire solder to pass through a new position between the two felt members. By this operation, it is possible to prevent a reduction in the cleaning effect due to accumulation of dirt on the felt member.

While the embodiment has been described above, the following modifications are also conceivable. Although an example in which two wire brush rollers and dust removal felt rollers are used facing each other is disclosed, for example, three or four pieces are provided,
The angles may be arranged every 120 degrees or every 90 degrees. Although an example in which a roller having two felt plates is used as the cleaning felt roller is disclosed, for example, an organic solvent may be impregnated into the roller as illustrated in FIG. 2B to perform cleaning. It is. In order to reduce the evaporation of the organic solvent, it is better to increase the airtightness of the device. Therefore, a solder bobbin may be housed inside the device, and the opening may be provided only as an outlet.

In the embodiment, the example in which the cleaning roller is intermittently driven by the electromagnetic clutch device is disclosed. However, instead of the electromagnetic clutch device, a device similar to the speed reducer 51 for reducing the number of rotations may be provided. A similar function can be achieved. In this case, a timer circuit is unnecessary.

In the embodiment, an example in which an operator manually performs a soldering operation is disclosed. However, for example, a solder cleaning device according to the present invention is provided before a soldering apparatus that automatically performs a soldering operation using wire soldering. A device may be provided. In this case, the solder is sent out according to an instruction from a subsequent soldering apparatus. Further, the function of the solder cleaning device of the present invention may be built in an automatic soldering device or any device using wire solder. In the example,
Although the example in which the present invention is applied to cleaning of wire solder is disclosed, the cleaning apparatus of the present invention is applicable to cleaning of any metal wire.

[0020]

As described above, in the present invention,
In a metal wire cleaning device, a means for mechanically removing an oxide film on the surface of the metal wire and a means for cleaning the surface of the metal wire with a cleaning agent are provided. The oxide film of the metal wire such as the wire solder can be automatically and reliably removed. Therefore, the working efficiency of the soldering worker is improved, and the reliability of the soldering is also improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state of a soldering operation using a wire solder cleaning apparatus to which the present invention is applied.

FIG. 2 is a front view showing the configuration of various rollers.

FIG. 3 is a side view and a top view showing the configuration of one embodiment of the solder cleaning apparatus of the present invention.

[Description of Signs] 10 ... Solder cleaning device, 11 ... Solder bobbin, 12 ... Solder, 13 ... Soldering iron, 14 ... Printed circuit board, 15 ...
Foot switch, 16 code, 20 axis, 21, 22
... Disc members, 23, 24, 25 ... Felt, 26 ... Wire, 30 ... Wire solder, 31, 32 ... Guide roller, 3
3, 34: metal brush roller, 35, 36: felt roller, 40: felt roller, 41: container, 42
... cock, 43 ... pan, 44, 45 ... feed roller, 5
0: motor, 51: reduction gear, 52, 53: belt,
54: electromagnetic clutch, 55: power plug, 56: timer circuit

Claims (3)

[Claims] 1. A metal wire cleaning apparatus comprising: a stripper for mechanically stripping an oxide film on a metal wire surface; and a cleaner for cleaning the surface of the metal wire with a cleaning agent. 2. The method according to claim 1, wherein the metal wire is a wire solder, the peeling unit includes a roller equipped with a metal brush for scraping a solder surface, and the cleaning unit is configured to impregnate an organic solvent as a cleaning agent. The metal wire cleaning apparatus according to claim 1, further comprising a roller on which two disk-shaped fiber members are mounted. 3. A feeding means comprising a roller for feeding a metal wire at a predetermined speed based on an instruction from the outside, wherein a roller of the peeling means rotates in a reverse direction in conjunction with a roller of the feeding means. The metal wire cleaning apparatus according to claim 1, wherein the roller of the cleaning unit is continuously or intermittently driven at a lower average rotation speed than the roller of the sending unit.