JP2022083819A - Soldering iron tip purifier - Google Patents

Abstract

To provide a soldering iron tip purifier which does not require separation of solder waste contained in polluted air with a filter.SOLUTION: A soldering iron tip purifier has: a cleaner part which removes solder waste adhered to an iron tip of a soldering iron by air injection; and a vacuum part 3 which sucks polluted air containing the solder waste from the cleaner part and separates the solder waste. The vacuum part 3 has a conical separation chamber 31, and an ejector 34 which makes the separation chamber 31 negative pressure by injecting drive air. The polluted air is sucked into the separation chamber 31, which has been made negative pressure by the ejector 34, from the cleaner part, and is so made as to be swirling flow, whereby the solder waste is separated from the polluted air by action of centrifugal force.SELECTED DRAWING: Figure 3

Description

The present invention relates to a soldering iron tip purifying device that removes solder debris adhering to the soldering iron tip by injecting air from an air nozzle.

This type of trowel purification device is known, for example, as disclosed in Patent Document 1. This known trowel purifying device has a cleaner part that removes solder debris adhering to the tip of a soldering iron by injecting air from an air nozzle, and a vacuum that sucks and purifies contaminated air containing solder debris from the cleaner part. It has a part, and is configured to purify the contaminated air sucked into the vacuum by passing it through a filter to collect solder debris and then discharge it to the outside.

Since the trowel purification device purifies the contaminated air containing the solder debris at the vacuum portion and then discharges it to the outside, there is no risk of causing environmental pollution, and it is hygienic and superior in safety. However, since the solder debris contained in the contaminated air is separated by a filter, there is a problem that the purification function tends to deteriorate when the filter is clogged. Therefore, it is necessary to clean or replace the filter every time the filter is clogged.

Japanese Unexamined Patent Publication No. 2004-276081

A technical object of the present invention is to provide a soldering iron tip purifying device having excellent usability, which does not require a filter to separate solder debris contained in contaminated air.

In order to solve the above problems, the soldering iron tip purifying device of the present invention has a cleaner unit that removes solder debris adhering to the soldering iron tip by injecting air from an air nozzle in a cleaner box, and the cleaner. A vacuum cleaner that sucks contaminated air containing solder debris from the box into the separation chamber and creates a swirling flow to separate the solder debris by centrifugal force and discharges the purified air after separating the solder debris to the outside through the exhaust flow path. The vacuum portion has a contaminated separation chamber having a conical shape whose central axis faces vertically, a contaminated air suction port for sucking contaminated air from the cleaner box into the separation chamber, and an upper end portion of the separation chamber. It has a purified air discharge port formed in the above and an ejector connected to the purified air discharge port, and the ejector generates a negative pressure in the purified air discharge port by injecting driving air, and the purified air is generated. The purified air in the separation chamber is sucked into the exhaust flow path from the discharge port and discharged to the outside to create a negative pressure in the separation chamber, and the contaminated air in the cleaner box is introduced into the separation chamber from the contaminated air suction port. It is characterized in that it is configured to inhale.

In the present invention, the ejector has an air supply port for supplying drive air, an air outlet for ejecting drive air supplied from the air supply port to the outside, and air from the air outlet. It has an air suction port that becomes negative pressure due to ejection, and the exhaust flow path that connects the air supply port, the air outlet, and the air suction port, and the exhaust flow path extends along the central axis. The air suction port is formed at the lower end of the exhaust flow path and connected to the purified air discharge port of the separation chamber, and the air outlet is formed at the upper end of the exhaust flow path and opens to the outside. However, it is preferable that the air supply port communicates with the intermediate portion of the exhaust flow path through the air blow port.

In the present invention, the separation chamber has an upward spreading shape, and the contaminated air suction port is opened on the side surface of the separation chamber so as to suck the contaminated air in the tangential direction of the inner circumference of the separation chamber. Is preferable.

In the present invention, the air nozzle of the cleaner section and the ejector of the vacuum section are connected in parallel to a common air source via individual solenoid valves, and air is supplied at the same time by operating the solenoid valves at the same time. It is preferable that it is configured as such.

In the present invention, by making the cross-sectional area of the air supply port in the ejector larger than the cross-sectional area of the nozzle hole in the air nozzle, the suction flow rate of the purified air sucked from the separation chamber into the exhaust flow path by the ejector. Is preferably larger than the injection flow rate of the air injected from the air nozzle into the cleaner box.

In the present invention, the vacuum portion preferably has a dust discharge port formed at the lower end of the separation chamber and a dust receiver for receiving solder dust falling from the dust discharge port.

According to the present invention, the solder debris contained in the contaminated air is separated by centrifugal force by using the contaminated air as a swirling flow, so that it is not necessary to use a filter as in the conventional case. Therefore, it is not necessary to clean or replace the clogged filter, which is superior in usability. Further, since the contaminated air is not directly sucked into the ejector, the ejector is not contaminated or the suction function is not deteriorated due to the adhesion of solder debris.

It is a perspective view of the iron tip purification apparatus which concerns on this invention. It is a side view which shows by breaking a part of the cleaner part. It is sectional drawing of the vacuum part. It is sectional drawing of an ejector. It is a circuit diagram which shows the air piping system of a trowel purification apparatus by a symbol.

1 to 5 show an embodiment of a soldering iron tip purifying device according to the present invention. The trowel purifying device 1 sucks contaminated air containing solder debris from the cleaner unit 2 that removes the solder debris adhering to the solder debris 5a of the soldering iron 5 by injecting air from the air nozzle 10 and the cleaner unit 2. It has a vacuum unit 3 that separates the solder debris and discharges the purified air after the solder debris is separated to the outside.
The cleaner unit 2 and the vacuum unit 3 are configured as separate units, and are connected to each other by a flexible hose 11 for transporting contaminated air from the cleaner unit 2 to the vacuum unit 3.

As shown in FIG. 2, the cleaner unit 2 has a rectangular box-shaped cleaner box 12 made of metal or synthetic resin. A bracket 13 is attached to the outer wall surface of the cleaner box 12 on the base end side, a nozzle support member 14 is provided on the bracket 13, the air nozzle 10 is attached to the nozzle support member 14, and the air injection port 10a at the tip thereof is provided. Is inserted into the cleaner box 12 in an inclined posture, and is supported so that the air injection direction can be adjusted in the vertical direction and the horizontal direction.

A pipe connection portion 15 is provided on the side surface of the air nozzle 10 near the base end portion, and as is clear from FIG. 5, a blow pipe 16 connecting the air nozzle 10 and the air source 4 is provided in the pipe connection portion 15. One end of the third blow piping portion 16c, which is a part of the above, is connected. The blow pipe 16 is for supplying air from the air source 4 to the air nozzle 10, and the main piping portion 17 connecting the air source 4 and the first pipe joint 18 and the first pipe joint 18 are provided. The first blow piping portion 16a connecting the first electromagnetic valve 19 and the first electromagnetic valve 19, the second blow piping portion 16b connecting the first electromagnetic valve 19 and the second pipe joint 20, the second pipe joint 20 and the air nozzle 10. It is composed of the third blow piping portion 16c connecting the above.

The first solenoid valve 19 is a two-port valve that is switched to two positions by a solenoid 21 and a return spring 22. When the solenoid 21 is off, the first solenoid valve 19 is urged by the return spring 22 to move to the first position 19a. When the first blow pipe portion 16a and the second blow pipe portion 16b are cut off and the solenoid 21 is turned on, the solenoid 21 is switched to the second position 19b and the first blow pipe portion 16a and the second blow pipe are connected. The portion 16b is made conductive, and air is injected from the air injection port 10a of the air nozzle 10.

The openable and closable lid 23 that covers the upper surface of the cleaner box 12 is provided with a trowel tip insertion port 23a at a position near the base end where the air nozzle 10 is arranged, and solder is provided from the trowel tip insertion port 23a. The tip 5a of the trowel 5 is inserted downward into the cleaner box 12 so as to be close to the air injection port 10a at the tip of the air nozzle 10.

Further, on one side surface of the cleaner box 12, a hose connection port 24 for connecting the hose 11 is provided at a position near the upper end portion and the tip end portion of the side surface. Further, at the lower end of the side surface, an opening 12a for taking in and out the tray 25 is formed over substantially the entire length of the side surface. The tray 25 receives the solder debris that has been peeled off from the solder trowel 5 and has fallen into the cleaner box 12, and can be taken in and out by the handle 25a.

On the other hand, as is clear from FIG. 3, the vacuum portion 3 has a cylindrical separation container 30 in which the central axis L is arranged vertically and a conical separation formed inside the separation container 30. The chamber 31, the contaminated air suction port 32 formed on the side surface of the separation container 30 to communicate with the separation chamber 31, and the separation chamber 31 communicate with the separation chamber 31 at the center position of the upper lid covering the upper surface of the separation container 30. The purified air discharge port 33 formed in the above manner, the ejector 34 connected to the purified air discharge port 33, the dust discharge port 35 formed at the lower end of the separation container 30, and the separation chamber 31 are contaminated. It has a dust receiver 36 for receiving the solder dust separated from the air and falling from the dust discharge port 35, and the hose 11 is connected to the contaminated air suction port 32.

The separation container 30 is made of a hard material such as metal or synthetic resin, and has a conical first container portion 30a extending upward and a cylindrical shape having a constant inner diameter connected to the upper end of the first container portion 30a. It has a second container portion 30b, and the separation chamber 31 is formed inside the first container portion 30a and the second container portion 30b. Therefore, the separation chamber 31 has an upwardly expanding conical portion 31a and a cylindrical portion 31b having a constant inner diameter connected to the upper portion of the conical portion 31a, and the purifying air is discharged at the center position of the upper end of the cylindrical portion 31b. The outlet 33 is open, and the dust discharge port 35 is open at the lower end of the conical portion 31a. Further, the contaminated air suction port 32 is provided on the side surface of the second container portion 30b of the separation container 30 so as to suck the contaminated air in the tangential direction of the inner circumference of the cylindrical portion 31b in the separation chamber 31. ..

As is clear from FIG. 4, the ejector 34 supplies driving air from the air supply port 40 and ejects it from the air ejection port 41 to generate a negative pressure in the air suction port 42, and the air suction port 42. The purified air in the separation chamber 31 is sucked into the exhaust flow path 43 and discharged to the outside together with the driving air from the air ejection port 41, and is configured as follows.

That is, the ejector 34 has a tubular body 44 attached to the upper end of the separation container 30 so as to extend along the central axis L. The body 44 is composed of a first body 45 and a second body 46 connected along the central axis L, and the exhaust flow path 43 is inside the first body 45 and the second body 46. It penetrates straight in the vertical direction along the central axis L. The air ejection port 41 is formed at the upper end portion of the first body 45, the exhaust flow path 43 is opened to the outside, and the air suction port 42 is formed at the lower end portion of the second body 46. The exhaust flow path 43 is connected to the separation chamber 31 through the purification air discharge port 33, and the air supply port 40 is formed on the side surface of the first body 45 and is formed on the side surface of the first body 45. It communicates with the middle part through the air inlet 47.

The air inlet 47 is formed by an annular gap interposed between the first body 45 and the second body 46, and communicates with the exhaust flow path 43 over the entire circumference of the exhaust flow path 43. There is. That is, the air blowing port 47 is formed at the inner circumference of the fitting hole portion 45a formed in the first body 45 and at the tip of the second body 46 and fits in the fitting hole portion 45a. It is formed between the outer circumference of the fitting cylinder portion 46a and communicates with the air supply port 40 via an annular groove 48 surrounding the outer circumference of the fitting cylinder portion 46a. The inner circumference of the fitting hole portion 45a is a tapered surface that is inclined so that the inner diameter gradually decreases toward the air ejection port 41 side, and the outer circumference of the fitting cylinder portion 46a is also the air ejection outlet. Since the tapered surface is inclined so that the outer diameter gradually decreases toward the 41 side, the air from the air supply port 40 flows into the exhaust flow path 43 along these tapered surfaces. It will be blown toward the side at high speed.

As shown in FIG. 5, the air supply port 40 of the ejector 34 is connected to the air source 4 via a vacuum pipe 50. The vacuum pipe 50 is for supplying air from the air source 4 to the ejector 34, and the main pipe portion 17 connecting the air source 4 and the first pipe joint 18 and the first pipe joint. It is composed of a first vacuum piping portion 50a connecting the 18 and the second solenoid valve 51, and a second vacuum piping portion 50b connecting the second solenoid valve 51 and the air supply port 40.

The second solenoid valve 51 has the same configuration as the first solenoid valve 19, and is a two-port valve that can be switched to two positions by a solenoid 52 and a return spring 53. When the solenoid 52 is off, the second solenoid valve 51 is a two-port valve. When the first vacuum piping portion 50a and the second vacuum piping portion 50b are cut off at the first position 51a and the solenoid 52 is turned on, the solenoid 52 is switched to the second position 51b and the first vacuum piping portion 50a and the second vacuum piping portion 50a are turned on. 2 Air is supplied to the air supply port 40 of the ejector 34 by conducting the vacuum piping portion 50b.

The separation container 30 and the ejector 34 are housed inside the case 57. The case 57 has a cylindrical cover 61 made of a transparent or translucent synthetic resin on the outer surface of a frame formed by interconnecting a circular bottom plate 58 and a top plate 59 with a plurality of connecting rods 60. It is formed by attaching the bottom plate 58, and is supported on the base 62 by fixing the bottom plate 58 to the upper surface of the U-shaped base 62. The drawer-shaped dust receiver 36 is supported on the lower surface of the base 62 by a handle 36a so that it can be freely taken in and out from the front of the case 57.

In order to stabilize the separation container 30 and the ejector 34 in the case 57, the lower end portion of the separation container 30 is fixedly fitted inside the circular center hole 58a provided in the center of the bottom plate 58. The upper end of the separation container 30 is fixed to the top plate 59 with a plurality of rods 63, and the upper end of the ejector 34 is fixed to the top plate 59 with screws 64. Then, the dust discharge port 35 at the lower end of the separation container 30 opens on the dust receiver 36 through the central hole 58a of the bottom plate 58, and the air ejection port 41 of the ejector 34 is located in the center of the top plate 59. It penetrates the provided circular center hole 59a and protrudes upward from the top plate 59, and at the same time, opens into the filter chamber 66 formed on the lower surface of the exhaust lid 65 covering the upper end of the cover 61, and the filter chamber is opened. Through the filter 67 housed in the 66, the exhaust hole 65a formed in the exhaust lid 65 is opened to the outside.

Further, elongated window holes 68 are formed vertically in the lower half of the front surface of the cover 61, and a support plate 69 rising from the bottom plate 58 is arranged at the position of the window holes 68, and the support plate 69 is provided with a support plate 69. A suction pipe having the contaminated air suction port 32 from a gap formed between the upper end of the support plate 69 and the upper end of the window hole 68 to which the first pipe joint 18 and the second pipe joint 20 are attached. 70 projects to the outside of the cover 61, and the hose 11 is connected to the suction pipe 70.
The first pipe joint 18 is a T-shaped joint having three connection ports, and the second pipe joint 20 is a joint having two connection ports.
The portion marked with reference numeral 71 in FIG. 1 is a wiring hole for drawing the electrical wiring for the first and second solenoid valves 19, 51 into the cover 61.

Further, inside the cover 61, support plates 72 fixed to the bottom plate 58 stand up at positions adjacent to the left side surface and the right side surface of the separation container 30, respectively, and the first solenoid valve is attached to one of the support plates 72. A valve 19 is attached, and the second solenoid valve 51 is attached to the other support plate. In FIG. 1, one support plate 72 and the first solenoid valve 19 are shown, and the other support plate and the second solenoid valve 51 are not shown.

Then, as shown in FIG. 5, the main piping portion 17 from the air source 4 is connected to the first connection port 18a of the first pipe joint 18, and the second connection port 18b of the first pipe joint 18 is connected. The first blow piping portion 16a disposed inside the cover 61 is connected to the input port 19c of the first electromagnetic valve 19, and the output port 19d of the first electromagnetic valve 19 and the second pipe are connected. The second blow piping portion 16b disposed inside the cover 61 is connected to the first connection port 20a of the joint 20, and the third blow is connected to the second connection port 20b of the second pipe joint 20. The piping portion 16c is connected. Further, the first vacuum piping portion 50a disposed inside the cover 61 is connected to the third connection port 18c of the first pipe joint 18 and the input port 51c of the second solenoid valve 51. The second vacuum piping portion 50b arranged inside the cover 61 is connected to the output port 51d of the second solenoid valve 51 and the air supply port 40 of the ejector 34.
Therefore, the blow pipe 16 and the vacuum pipe 50 are connected in parallel to the common air source 4 and the common main pipe portion 1 via the separate solenoid valves 19, 51.

Next, the operation of the trowel purifying device 1 having the above configuration will be described. When removing the solder debris adhering to the tip 5a of the soldering iron 5 with the iron tip purifying device 1, as shown in FIG. 2, the tip 5a of the soldering iron 5 is used as the cleaner box 12 in the cleaner unit 2. It is inserted into the cleaner box 12 from the iron tip insertion port 23a on the upper surface of the above surface, brought close to the air injection port 10a at the tip of the air nozzle 10, and the first electromagnetic valve 19 and the second electromagnetic valve 51 are turned on at the same time. The air from the air source 4 is supplied to the air nozzle 10 through the blow pipe 16 and at the same time to be supplied to the ejector 34 through the vacuum pipe 50.

At this time, the operation of turning on and off the first solenoid valve 19 and the second solenoid valve 51 may be manually performed by a switch provided at an appropriate position of the iron tip purifying device 1, but the cleaner unit 2 may be soldered. A sensor for detecting 5 may be provided so that the sensor automatically performs the detection by the detection signal when the soldering iron 5 is detected, or in the automatic soldering using a soldering robot, the iron tip 5a is purified. When the above is automatically performed, the first solenoid valve 19 and the second solenoid valve 51 may be set to be turned on and off by the control device in conjunction with the purification operation.

When the first solenoid valve 19 and the second solenoid valve 51 are turned on, in the cleaner portion 2, the solder dust adhering to the trowel tip 5a is blown off by the air injected from the air injection port 10a of the air nozzle 10. It is peeled off from the trowel tip 5a. At this time, among the solder debris peeled off from the tip 5a, the heavy solder debris falls into the cleaner box 12 as it is and is collected in the tray 25, but the lightweight solder debris, dust, and the like are removed. It remains floating in the air.

On the other hand, in the vacuum unit 3, the driving air supplied to the air supply port 40 of the ejector 34 is blown into the exhaust flow path 43 from the air inlet 47 and at high speed from the air outlet 41. When it is ejected, a negative pressure is generated in the air suction port 42, so that the air in the separation chamber 31 is sucked into the exhaust flow path 43 from the air suction port 42, and the air is sucked from the upper end air ejection port 41. It is discharged to the outside together with the driving air. As a result, since the inside of the separation chamber 31 becomes a negative pressure, the contaminated air containing solder dust and the like in the cleaner box 12 enters the separation chamber 31 from the contaminated air suction port 32 through the hose 11 to the separation chamber 31. It is inhaled in the tangential direction of the inner circumference of.

As shown by the arrow in FIG. 3, the contaminated air sucked into the separation chamber 31 becomes a swirling flow along the conical surface, descends while spirally swirling along the conical surface, and then descends, and then the separation chamber 31. By turning to an ascending flow near the lower end of the air and rising along the central axis L, the air is sucked into the exhaust flow path 43 from the air suction port 42 and discharged from the air outlet 41. At this time, the solder debris in the contaminated air is separated by the action of centrifugal force while swirling together with the contaminated air, descends in the separation chamber 31 along the conical surface, and enters the tray 36. It falls to and is collected. Then, only the purified air after the solder debris is separated is sucked into the exhaust flow path 43 by the ejector 34, finer dust and the like are collected by the filter 67, and then discharged to the outside. become.

Thus, the trowel purification device 1 separates the solder debris contained in the contaminated air by sucking the contaminated air into the separation chamber 31 to form a swirling flow, thereby performing the separation by the action of centrifugal force, and filtering by a filter. Since the solder debris is not separated, there is no need to clean or replace the clogged filter, which is superior in usability. Further, since the contaminated air is not directly sucked into the ejector 34, the ejector 34 is not contaminated or the suction function is not deteriorated due to the adhesion of solder debris.

Here, in order to ensure that all the contaminated air in the cleaner box 12 is sucked into the separation chamber 31 by the ejector 34, the flow rate (injection flow rate) of the air injected into the cleaner box 12 from the air nozzle 10 Therefore, it is necessary to increase the flow rate (suction flow rate) of the air sucked from the separation chamber 31 into the exhaust flow path 43 by the ejector 34 and discharged to the outside. Therefore, by making the cross-sectional area of the air supply port 40 in the ejector 34 larger than the cross-sectional area of the nozzle hole in the air nozzle 10, the relationship of suction flow rate> injection flow rate as described above is established. ..

In the embodiment, the conical portion 31a of the separation chamber 31 has an upward spreading shape, but on the contrary, it may have a downward spreading shape.
Further, the cylindrical portion 31b of the separation chamber 31 is not necessarily a necessary portion, and the separation chamber 31 may be formed only by the conical portion 31a.
Further, in the embodiment, the cleaner portion 2 and the vacuum portion 3 are arranged at positions separated from each other and connected to each other by a flexible hose 11, but are supported by one support frame or the like. As a result, they may be placed stationary at positions adjacent to each other, or they may be directly connected to each other by a connecting metal fitting or the like.

1 iron tip purification device 2 cleaner part 3 vacuum part 4 air source 5 solder iron 5a iron tip 10 air nozzle 12 cleaner box 19,51 electromagnetic valve 31 separation room 32 contaminated air suction port 33 purification air discharge port 34 ejector 35 dust discharge port 36 Dust receiver 40 Air supply port 41 Air outlet 42 Air suction port 43 Exhaust flow path 47 Air inlet L Central axis

Claims (6)

A cleaner unit that removes solder debris adhering to the tip of the solder trowel by injecting air from an air nozzle in the cleaner box, and contaminated air containing solder debris from the cleaner box is sucked into the separation chamber to create a swirling flow. As a result, it has a vacuum part that separates the solder debris by centrifugal force and discharges the purified air after the solder debris separation to the outside through the exhaust flow path.
The vacuum portion is formed at the separation chamber having a conical shape whose central axis faces vertically, a contaminated air suction port for sucking contaminated air from the cleaner box into the separation chamber, and an upper end portion of the separation chamber. It has a purified air outlet and an ejector connected to the purified air outlet.
The ejector generates a negative pressure in the purified air discharge port by injecting driving air, sucks the purified air in the separation chamber into the exhaust flow path from the purified air discharge port, and discharges the purified air to the outside. The separation chamber is made to have a negative pressure, and the contaminated air in the cleaner box is sucked into the separation chamber from the contaminated air suction port.
A trowel tip purification device for soldering iron, which is characterized by this. The ejector has an air supply port for supplying driving air, an air ejection port that ejects driving air supplied from the air supply port to the outside, and a negative pressure due to the ejection of air from the air ejection port. It has an air suction port, and an exhaust flow path that communicates these air supply ports, an air ejection port, and an air suction port.
The exhaust flow path extends along the central axis and
The air suction port is formed at the lower end of the exhaust flow path and is connected to the purified air discharge port of the separation chamber.
The air outlet is formed at the upper end of the exhaust flow path and is open to the outside.
The air supply port communicates with an intermediate portion of the exhaust flow path through an air inlet.
The trowel tip purifying device for soldering iron according to claim 1. The separation chamber has an upward spreading shape,
The contaminated air suction port is open on the side surface of the separation chamber so as to suck the contaminated air in the tangential direction of the inner circumference of the separation chamber.
The soldering trowel tip purifying device according to claim 1 or 2. The air nozzle of the cleaner unit and the ejector of the vacuum unit are connected in parallel to a common air source via individual solenoid valves, and air is supplied simultaneously by operating the solenoid valves at the same time. The soldering iron tip purifying device according to any one of claims 1 to 3, wherein the soldering iron tip is purified. By making the cross-sectional area of the air supply port in the ejector larger than the cross-sectional area of the nozzle hole in the air nozzle, the suction flow rate of the purified air sucked from the separation chamber into the exhaust flow path by the ejector is set to the air nozzle. The trowel tip purifying device for soldering iron according to claim 4, wherein the flow rate is larger than the injection flow rate of the air injected into the cleaner box. The vacuum portion according to any one of claims 1 to 5, wherein the vacuum portion has a dust discharge port formed at the lower end portion of the separation chamber and a dust receiver for receiving solder dust falling from the dust discharge port. The described soldering iron tip purification device.

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