JPH07251262A - Soldering iron - Google Patents

Abstract

PURPOSE:To make a soldering iron absorb smoke of a flux into itself at the time of soldering. CONSTITUTION:A suction tube 21 which sucks smoke into the outer circumference of the tip of an iron 11 and supplies it to a handle 12 side is arranged, an introducing channel 22 which introduces the smoke from the suction tube 21 is opened in the handle 12. An air hose 25 is connected to a discharging outlet 23 of the introducing channel 22, an air cleaner 30 which sucks the smoke and removes it is joined to the air hose 25. The air cleaner 30 is built in a control box 27, and has a filter 31 and a vacuum pump 32. When the smoke 40 is generated from the flux 40 at the time of soldering, the smoke 40 is sucked into the suction tube 21, introduced into the air cleaner 27 through the introducing channel 22 and the air hose 25 to be cleaned. Therefore, since the smoke of the flux can be prevented from spreading at the soldering time, the worker or surrounding people can be prevented from breathing the smoke.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soldering iron, and more particularly to a soldering iron in which negative pressure means for sucking smoke of flux generated at the time of soldering is integrated. The present invention relates to what is effective in performing soldering work with a soldering iron.

[0002]

2. Description of the Related Art Conventionally, as a soldering iron, a gas soldering iron,
Various things such as an electric soldering iron are used. Of these soldering irons, electric soldering irons are widely used because of their ease of handling and certainty of temperature control. In particular, an electric soldering iron is widely used to remove a soldered integrated circuit device (hereinafter referred to as an IC) from a substrate.

As an example in which the electric soldering iron technology is described, "Soldering Technology for Electronic Materials" issued by Industrial Research Institute Co., Ltd., issued January 15, 1985, P148-P15
There is one.

[0004]

However, in the conventional electric soldering iron itself, although smoke containing flux is generated due to melting of the solder during work, no countermeasure is taken against it. That is, when removing the smoke of flux generated during soldering from around the operator, there are methods such as using a duct or improving ventilation in the room.
Has been adopted. However, with such a method, there is a fear that the worker and the people around may smoke the flux-containing smoke during the soldering work. Also, in this way,
The scale of equipment becomes large, and the equipment cost and running cost become enormous.

An object of the present invention is to provide a soldering iron with an air purifier which can improve the working environment by sucking the smoke of the flux generated by the melting of the solder with the soldering iron itself. .

The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

[0007]

[Means for Solving the Problems] That is, in a soldering iron in which the base end side of the iron tip is supported by a shaft-shaped handle, the outer circumference of the iron tip is An intake pipe for sucking smoke generated from the tip side and sending it to the handle side is arranged, and an inlet passage for introducing smoke from the intake pipe is opened in the handle, and an outlet of this inlet passage Is connected to one end of a ventilation pipe, and negative pressure means is connected to the other end of the ventilation pipe.

[0008]

According to the above means, when soldering is performed using a soldering iron, if smoke is generated from the tip side of the tip due to melting of the solder, the smoke is guided to the intake pipe and is handled. Is sucked into the introduction path. That is, when the soldering work is performed, the smoke of the solder is sucked into the soldering iron and removed from the surroundings of the worker by the function of the soldering iron itself. For this reason, it is possible to suppress the worker and the people around it from inhaling the smoke of the flux, which can contribute to the improvement of the working environment.

[0009]

1 is a vertical sectional view showing a soldering iron according to an embodiment of the present invention. FIG. 2A is a schematic perspective view showing the whole soldering iron with an air cleaner, and FIG. 2B is a circuit diagram of the air cleaner.

In the present embodiment, the soldering iron according to the present invention is configured as an electric soldering iron having an automatic temperature adjusting function, and an air purifier is connected to the electric soldering iron 10. The electric soldering iron 10 includes a tip 11 and a handle 12, and the base end side of the tip 11 is supported by the shaft-shaped handle 12. The tip 11 includes a cylindrical main body 13 and a tip 14, and a rear end portion of the tip 14 is replaceably fitted into a front end portion of the main body 13. Then, a coiled heater 1 is provided at the tip of the main body 13.
5 is embedded so that the heat of the heater 15 is transferred to the chip 14.

Further, a temperature sensor 16 and a permanent magnet 17 are arranged in this order from the tip end side in the cylindrical hollow portion of the tip body 13 adjacent to the heater 15. The lead wire of the heater 15 and the lead wire of the temperature sensor 16 are connected to the handle 1
2 are connected to the heater control switches 18 arranged in the respective units. The base end of the tip body 13 is fixed to the handle 12 by a bracket 19.

In this embodiment, a cylindrical intake pipe 21 is screwed into the threaded portion of the bracket 19 on the outer periphery of the tip end body 13 on the base end side, and the bracket 19 has an opening 20.
The hollow tube portion of the intake pipe 21 and the intake pipe 21 suck the smoke of flux generated from the tip side of the tip 11 when the solder is melted by the tip 14 and guide it to the handle 12 side. It is configured.

On the other hand, inside the cylindrical handle 12, the smoke sucked by the intake pipe 21 is opened.
An introduction route 22 for introduction through is established. A heater control switch 18 is arranged in the introduction path 22. Further, a discharge port 23 communicating with the introduction path 22 and a lead wire extraction port 24 are opened at the rear end of the handle 12. An air hose 25 as a ventilation pipe is fluidly connected to the outlet 23, and a lead wire 26 for energizing the heater 15 is inserted into the lead wire outlet 24.

As shown in FIG. 2 (a), the air hose 25 and the lead wire 26 are led together to the control box 27 either individually or separately. In the control box 27, the lead wire 26 is electrically connected to a temperature control device (not shown), and the air hose 25 is fluidly connected to the air purifier 30.

As shown in FIG. 2B, the air purifier 30 is incorporated in the control box 27. That is, the air purifier 30 includes a filter 31, a vacuum pump 32 as negative pressure means, and a motor 33 for driving the vacuum pump 32.
The second suction port is connected to the air hose 25 via the filter 31. The filter 28 is configured to be replaceable, and is configured to clean the smoke of the flux sucked from the intake pipe 21 and send it to the vacuum pump 32 side. The vacuum pump 32 is composed of a low-output blower such as a fan driven by a motor 30. The vacuum pump 32 discharges the smoke filtered by the filter 31 from the discharge port, and the exhaust port 28 provided in the control box 27.
It is configured to be discharged from the box to the outside of the box.

Next, the operation will be described. First, when soldering work is performed, when the motor 33 is operated and the vacuum pump 32 that performs the intake action is operated, the air hose 25,
Negative pressure acts on the introduction passage 22 and the intake pipe 21. In this state, when the heater 15 is energized and the soldering work is performed while holding the handle 12, smoke 40 containing flux is generated from the tip side of the tip 11 as the solder melts. The generated smoke 40 is immediately sucked into the intake pipe 21 due to the negative pressure in the intake pipe 21.

The smoke 4 sucked into the intake pipe 21
0 is introduced into the air purifier 30 via the introduction passage 22 in the handle 12 and the air hose 25. The smoke 40 introduced into the air purifier 30 is cleaned by the filter 31, and only the cleaned air 41 is discharged from the discharge port of the vacuum pump 32 and exhausted from the exhaust port 28 of the control box 27 to the outside of the box. It

According to the above embodiment, the following effects can be obtained. (1) When soldering work is performed using the soldering iron 10 connected to the air purifier 30, the smoke 40 of the flux generated by the soldering does not diffuse to the surroundings and immediately enters the intake pipe 21. Since it is inhaled, it is possible to suppress the inhalation of the smoke of the flux by the worker or the surrounding people, which can contribute to the improvement of the working environment.

(2) Since ducts and ventilation equipment can be omitted or simplified, equipment investment and running costs can be reduced.

Although the invention made by the present inventor has been specifically described based on the embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say.

For example, the filter may be provided on the discharge side of the vacuum pump or may be omitted in some cases.

The means for sucking smoke is not limited to the use of a vacuum pump, but suction force of an air duct of a factory may be used.

[0023]

The effects obtained by the typical ones of the inventions disclosed in the present application will be briefly described as follows.

By attaching an intake pipe to the tip of the soldering iron and immediately sucking in and exhausting the smoke of flux,
Since flux smoke can be suppressed from diffusing to the surroundings during soldering work, it is possible to prevent workers and others from inhaling flux smoke during the soldering work, which contributes to improving the working environment. can do.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a soldering iron which is an embodiment of the present invention.

FIG. 2A is a schematic perspective view showing the whole soldering iron with an air purifier, and FIG. 2B is a circuit diagram showing the soldering iron with an air purifier.

[Explanation of symbols]

10 ... Soldering iron, 11 ... Iron tip, 12 ... Handle, 13
... Main body, 14 ... Chip, 15 ... Heater, 16 ... Temperature sensor, 17 ... Permanent magnet, 18 ... Heater control switch, 19
... bracket, 20 ... opening, 21 ... intake pipe, 22 ... introduction path, 23 ... discharge port, 24 ... lead wire take-out port, 25 ...
Air hose (vent pipe), 26 ... Lead wire, 27 ... Control box, 28 ... Exhaust port, 30 ... Air purifier, 3
1 ... Filter, 32 ... Vacuum pump (negative pressure means), 33 ...
Motor, 40 ... smoke, 41 ... clean air.

Claims (3)

[Claims] 1. A soldering iron in which a base end side of a tip is supported by a shaft-shaped handle, and smoke generated from the tip side of the tip is melted around the outer periphery of the tip. An intake pipe for sucking air and sending it to the handle side is arranged, and an inlet passage for introducing smoke from the intake pipe is opened in the handle, and one end of the ventilation pipe is provided at the outlet of the inlet passage. And a negative pressure means is connected to the other end of the ventilation pipe. 2. The soldering iron according to claim 1, wherein the negative pressure means comprises a filter for adsorbing and filtering smoke. 3. The soldering iron according to claim 1, wherein the negative pressure means comprises a vacuum pump.