JP6902770B2 - Trowel tip cleaner for soldering iron - Google Patents

Description

The present invention relates to a trowel tip cleaner for a trowel that cleans the trowel tip by peeling off the solder debris adhering to the trowel tip of the solder trowel by an air blow.

This type of trowel cleaner is known, for example, as disclosed in Patent Document 1. A known trowel cleaner is a box-shaped cleaner case with an elongated tubular air nozzle having an injection port at the tip, and the injection port is inserted inside the cleaner case and other parts are outside the cleaner case. Attached so that the injection angle can be adjusted in a positioned position, and by injecting air from the injection port to the tip of the solder trowel inserted in the cleaner case, the solder debris adhering to the tip is blown off and removed. It is configured to do.

On the other hand, as shown in FIGS. 14 and 15, the soldering iron used in the automatic soldering device is attached to the soldering arm in various directions and inclination angles according to the soldering target for each soldering device. There is. Further, a solder supply needle 2 for supplying linear solder is attached to the solder trowel 1 in a state where the tip of the needle is close to the trowel tip 1a. Therefore, when installing the trowel cleaner in the soldering equipment, it is necessary to adjust the position of the air nozzle, the injection angle, etc. according to the inclination angle of the soldering iron in the soldering equipment, the position of the solder supply needle, etc. there were.

However, the position and injection angle of the air nozzle can be adjusted so that the air nozzle does not come into contact with the trowel tip 1 or the solder supply needle 2 and the air is accurately blown toward the solder debris adhesion portion of the trowel tip 1a. It was a very detailed and time-consuming work that required accuracy because it had to be arranged at a position and injection angle that could be used. Moreover, depending on the positional relationship between the trowel tip 1a and the solder supply needle 2, it is difficult to bring the injection port at the tip of the elongated tubular air nozzle close to the trowel tip, so that it is difficult to blow air directly to the trowel tip. There are many cases, the part of the air nozzle that protrudes outward from the cleaner case, and the air piping connected to this protruding part get in the way, so insert the tip of the solder trowel into the cleaner case in the correct posture. In many cases, it became difficult.

Japanese Unexamined Patent Publication No. 2004-344920

The technical problem of the present invention is that the tip of the solder trowel can be reliably inserted into the cleaner box even when the inclination angle of the solder trowel and the position of the solder supply needle are different. It is an object of the present invention to provide a trowel cleaner having a rational design structure capable of reliably injecting air toward a trowel tip from a close position.

Soldering tip cleaner of the present invention includes a cleaner box having an insertion hole for inserting the soldering tip of the soldering iron on the upper surface, and a nozzle member which is entirely housed inside the cleaner box cleaner box trowel It has a drawer for accommodating and carrying out the solder debris peeled off from the tip, and a support arm extending toward the inside of the cleaner box is attached to the front wall of the drawer, and the nozzle member is supported by this support arm. The nozzle member is characterized in that a first nozzle hole for injecting air toward the tip of the soldering iron is formed, and the first nozzle hole is an elongated hole elongated in the horizontal direction.

Te present invention smell, Nozzle nozzle member, a block-like member having a front end which gradually forms a tapered first nozzle hole is formed in the front upper end position of the front end portion of the nozzle member.
In the present invention, it is preferable that the injection angle of air from the first nozzle hole can be changed by changing the posture of the nozzle member.

According to the specific configuration of the present invention, an outer lid and an inner lid are provided on the upper surface of the cleaner box, and insertion holes for inserting the tip of the solder trowel are formed in the outer lid and the inner lid, respectively. The opening area of the second insertion hole formed in the inner lid is smaller than the opening area of the first insertion hole formed in the outer lid.
In this case, the first insertion hole is formed in the first mask plate attached to the outer lid, the second insertion hole is formed in the second mask plate attached to the inner lid, and each mask plate is soldered. It is desirable to have flexibility and elasticity to the extent that the tip of the trowel can be deformed when it comes into contact with it.

Further, in the present invention, a second nozzle hole may be provided for changing the falling direction of the solder debris peeled from the trowel tip by injecting air.
It is desirable that the second nozzle hole is formed at a position below the first nozzle hole of the nozzle member.

According to the present invention, the entire nozzle member is housed inside the cleaner box in a non-protruding state, and a first nozzle hole composed of elongated holes elongated in the horizontal direction is formed in the nozzle member. Even if the angle and the position of the solder supply needle are different, the tip of the trowel can be brought closer to the first nozzle hole by accommodating it inside the cleaner box without causing positional conflict with the nozzle member, and it is horizontally long. Air can be reliably injected from the first nozzle hole of the above to the entire tip of the solder so as to cross the tip of the solder.

It is a side view of the trowel cleaner which concerns on this invention. It is a top view of the trowel cleaner. It is a front view of a trowel cleaner. It is a partial side view of the state where the outer lid and the inner lid of the trowel cleaner are removed and the drawer is pulled out halfway. It is a top view of the outer lid. It is a side view of the outer lid. It is a top view of the inner lid. It is a side view of the inner lid. It is a side view which shows the nozzle member and the support arm, and is the figure which shows by breaking a part of the nozzle member. FIG. 9 is a front view of FIG. 9 viewed from the left side, with the cover removed. FIG. 11 is a plan view of FIG. It is a side view of the main part which shows the state which attached the nozzle member horizontally. It is a side view of the main part which shows the state which attached the nozzle member in a forward leaning posture. It is a side view which shows an example of the state which the iron tip of a soldering iron is cleaning. It is a side view which shows another example of the state which the iron tip of a soldering iron is cleaning.

1 to 3 show an embodiment of a trowel cleaner according to the present invention. As shown in FIGS. 14 and 15, this trowel cleaner cleans the trowel 1a of the solder trowel 1 to which solder debris has adhered by injecting air, and has a cleaner box 10 having an air blow area inside and a cleaner. It has a nozzle member 11 arranged inside the box 10 and a first nozzle hole 12 and a second nozzle hole 13 that open at the upper and lower ends of the front end surface of the nozzle member 11.
The first nozzle hole 12 is a nozzle hole for peeling the solder debris adhering to the tip 1a of the soldering iron 1 by injecting air, and the second nozzle hole 13 is the solder debris peeled from the tip 1a. This is a nozzle hole for dispersing the solder by injecting air and preventing it from being concentrated and dropped in one place.

The cleaner box 10 is a box-shaped member having an elongated rectangular parallelepiped shape in the front-rear direction, and is formed from the outer box 14, the inner box 15 nested in the outer box 14, and the front side of the outer box 14. It has a drawer 16 that can be taken in and out freely.

The outer box 14 is composed of a container-shaped outer box main body 17 in which the upper surface and a part of the front surface are open, and a square shallow dish-shaped outer lid 18 detachably attached to the upper surface of the outer box main body 17. The inner box 15 is composed of an inner box main body 19 having a U-shape in a plan view in which the upper surface, the bottom surface and the front surface are open, and a flat inner box 20 attached to the upper surface of the inner box main body 19 so as to be openable and closable. It has become.

Further, the drawer 16 is for accommodating and carrying out the solder debris peeled from the tip 1a of the soldering iron 1, covers the front surfaces of the inner box 15 and the outer box 14, and serves as the bottom of the inner box 15. It fulfills. As can be seen from FIG. 4, the handle 16b is attached to the front wall 16a of the drawer 16, and the port plate 21 is attached to the upper end of the front wall 16a, and the support arm 22 is attached to the port plate 21. The nozzle member 11 is supported through the nozzle member 11. Further, an exhaust port 23 is formed on the front wall 16a of the drawer 16, one end of the suction pipe 24 is connected to the exhaust port 23, and the other end of the suction pipe 24 is connected to the atmosphere via a suction mechanism (not shown). Has been done.

The outer lid 18 and the inner lid 20 are made of a magnetic material such as an iron plate, and are formed as follows.
First, the outer lid 18 will be described. As is clear from FIGS. 5 and 6, a magnet mounting frame 27 is fixed to the lower surface of the top plate 18a, and two frame sides 27a connected to the L-shape of the magnet mounting frame 27. , 27b, magnets 28 are attached via holders 29, respectively.

On the other hand, as shown in FIGS. 7 and 8, the inner lid 20 has a rectangular plate shape having a diameter smaller than that of the outer lid 18, and is integrated with the outer lid 18 by being attracted to the magnet 28 of the outer lid 18. In that state, when the outer lid 18 is attached to the outer box 14, the inner lid 20 covers the upper surface of the inner box 15, and when the outer lid 18 is removed from the outer box 14, the inner lid 20 is also removed from the inner box 15. It has become like.

Further, the outer lid 18 and the inner lid 20 have an elongated positioning protrusion 30 downward on a part of the magnet mounting frame 27 of the outer lid 18 so that the outer lid 18 and the inner lid 20 are mutually fitted and positioned when they are integrated. It is formed in a protruding state, and a slit-shaped positioning hole 31 is formed in the inner lid 20.
When the inner lid 20 is removed from the outer lid 18, the inner lid 20 may be pulled away from the outer lid 18 with a force stronger than the attractive force of the magnet 28.

Further, in the outer lid 18 and the inner lid 20, the first insertion hole 32 having a large opening area and the second insertion hole 33 having a small opening area form an inclined posture as can be seen from FIGS. 12 and 13. The tip 1a of the soldering iron 1 is formed in a shape and arrangement so that it can be inserted into the cleaner box 10 together with the solder supply needle 2. In this way, the first insertion hole 32 and the second insertion hole 33 having different opening areas are provided in the outer lid 18 and the inner lid 20 in the upper and lower double directions because the solder is blown off from the trowel tip 1a by the injection of air. This is to prevent the debris from jumping out as much as possible.

As can be seen from FIG. 5, the first insertion hole 32 formed in the outer lid 18 has an oval-shaped trowel insertion portion 32a and one end of the trowel insertion portion 32a in the longitudinal direction in the longitudinal direction of the outer lid 18. It has a needle insertion portion 32b having a uniform hole width that extends, and the hole width D1 in the minor axis direction of the trowel insertion portion 32a is larger than the hole width D2 of the needle insertion portion 32b.

On the other hand, as can be seen from FIG. 7, the second insertion hole 33 formed in the inner lid 20 has a long hole-shaped trowel insertion portion 33a and a length of the inner lid 20 from one end in the long axis direction of the trowel insertion portion 33a. It has a needle insertion portion 33b extending in the direction, and the needle insertion portion 33b is divided into a narrow width portion 33c having a uniform hole width and a wide portion 33d having an elongated hole shape. The hole width D3 in the minor axis direction of the trowel insertion portion 33a is larger than the hole width D4 of the narrow width portion 33c and the hole width D5 of the wide portion 33d in the needle insertion portion 33b, and the hole width D4 of the narrow width portion 33c is the wide portion 33d. The hole width is smaller than D5.

Further, the hole width D3 of the trowel insertion portion 33a in the second insertion hole 33 is smaller than the hole width D1 of the trowel insertion portion 32a in the first insertion hole 32, and the hole width D4 and the hole width D4 of the needle insertion portion 33b in the second insertion hole 33. D5 is smaller than the hole width D2 of the needle insertion portion 32b in the first insertion hole 32.

The first insertion hole 32 and the second insertion hole 33 are formed in the mask plates 34 and 35 attached to the outer lid 18 and the inner lid 20, respectively.
That is, in the outer lid 18, as shown in FIGS. 5 and 6, a rectangular window hole 18b is formed in the top plate 18a, and the first mask plate 34 is formed on the top plate 18a so as to cover the window hole 18b. It is fixed to the lower surface with a screw 36, and a first insertion hole 32 is formed in the first mask plate 34.
Further, in the inner lid 20, as shown in FIGS. 7 and 8, a rectangular window hole 20a is formed in the inner lid 20, and a plurality of second mask plates 35 are provided so as to cover the window hole 20a. It is attached with a screw 37, and a second insertion hole 33 is formed in the second mask plate 35.

The first mask plate 34 and the second mask plate 35 are made of a material having heat resistance, flexibility, and elasticity so that they can be deformed when the trowel tip 1a or the solder supply needle 2 comes into contact with each other. Examples of such a material include silicon resin. As a result, even if the trowel tip 1a or the solder supply needle 2 comes into contact with the mask plates 34 and 35, damage to the trowel tip 1a and the solder supply needle 2 is prevented.

As is clear from FIGS. 4 and 9-11, the nozzle member 11 is a block-shaped member having a hexagonal shape in a plan view, and the front end portion 11a is gradually tapered, and the nozzle member 11 is formed. Inside the 11, a first air chamber 41 and a second air chamber 42 formed of circular holes whose axes are oriented in the vertical direction are formed on a vertical coaxial basis, and the upper end of the first air chamber 41 to be opened is a nozzle member. The lower end of the second air chamber 42, which is closed by the flat first lid plate 43 fixed to the upper end surface of 11 with a screw 43a, is flat and fixed to the lower end surface of the nozzle member 11 with a screw 44a. It is closed by the second lid plate 44. Therefore, the upper end surface and the lower end surface of the nozzle member 11 are flat surfaces except for the heads of the screws 43a and 44a.

Then, a slit-shaped first nozzle hole 12 formed of a horizontally elongated elongated hole is formed between the first lid plate 43 and the upper end surface of the nozzle member 11, and the first nozzle hole 12 is the first air chamber. The first air introduction port 45, which communicates with the upper end portion of 41 and opens on the back surface of the nozzle member 11, communicates with the lower end portion of the first air chamber 41. Further, between the second lid plate 44 and the lower end surface of the nozzle member 11, a slit-shaped second nozzle hole 13 formed by a horizontally elongated elongated hole is formed, and the second nozzle hole 13 hole is a second. The second air introduction port 46, which communicates with the lower end of the air chamber 42 and opens on the back surface of the nozzle member 11, communicates with the upper end of the second air chamber 42.

As is clear from FIG. 11, the first nozzle hole 12 has a substantially uniform hole width over the entire length from the rear end of the hole leading to the first air chamber 41 to the tip of the hole opened to the outside. The second nozzle hole 13 is a hole whose hole width gradually expands from the rear end of the hole leading to the second air chamber 42 to the tip of the hole opened to the outside, and the second nozzle hole The hole width of the hole tip portion of the hole 13 is larger than the hole width of the hole tip portion of the first nozzle hole 12.

The support arm 22 that supports the nozzle member 11 has an L-shape in a plan view, and has a rectangular plate-shaped substrate portion 50 detachably attached to the port plate 21 with screws 52 and one of the left and right sides of the substrate portion 50. It has an elongated rectangular plate-shaped support plate portion 51 fixed to the side end portion of the cleaner box 10 with a screw 51a and extending inward of the cleaner box 10, and a nozzle member 11 is provided at the tip of the support plate portion 51 in FIGS. As can be seen from 13, the two mounting screws 53 and the two pairs of screw insertion holes 54a and 54b formed in the support plate portion 51 are mounted so that the mounting posture can be changed, and air can be changed by changing the mounting posture. It is possible to change the injection angle of.

That is, as shown in FIGS. 9 and 12, when the two mounting screws 53, 53 are inserted into the first screw insertion holes 54a, 54a and the nozzle member 11 is attached to the support plate portion 51, the nozzle member 11 becomes horizontal. Air is horizontally injected from the first nozzle hole 12 and the second nozzle hole 13 toward the nozzle, and as shown in FIG. 13, the two mounting screws 53 and 53 are inserted into the second screw insertion holes 54b and 54b to form a nozzle. When the member 11 is attached to the support plate portion 51, the nozzle member 11 tilts slightly forward and air is injected obliquely downward from the first nozzle hole 12 and the second nozzle hole 13. The reason why the mounting posture of the nozzle member 11 is changed in this way is that the first nozzle hole 12 is correctly oriented toward the tip 1a according to the inclination angle of the soldering iron 1 attached to the soldering apparatus.

At the first air introduction port 45 of the nozzle member 11 and the outlet of the first air relay hole 55 formed in the substrate portion 50, one end and the other end of the first air introduction pipe 56 made of a synthetic resin tube are formed. , Each of which is connected via joints 57a and 57b, and similarly, a synthetic resin tube is connected to the second air introduction port 46 of the nozzle member 11 and the outlet of the second air relay hole 58 formed in the substrate portion 50. One end and the other end of the second air introduction pipe 59 made of the above are connected via joints 60a and 60b, respectively.

Further, an insertion type joint 61 is attached to the inlet of the first air relay hole 55 and the inlet of the second air relay hole 58 in the substrate portion 50, respectively, and when the substrate portion 50 is attached to the port plate 21, this joint 61 is attached. , 61 are inserted and connected to the outlet portion 62a of the first port 62 and the outlet portion 63a of the second port 63 formed on the port plate 21 via an O-ring 64, respectively.

Further, a first pipe joint 67 is attached to the inlet of the first port 62 to connect the first air supply pipe 68, and a second pipe joint 69 is attached to the inlet of the second port 63. The air supply pipe 70 is connected, and the first air supply pipe 68 and the second air supply pipe 70 are combined into one by the merging joint 71, and are common through the air pipe connected to the merging joint 71. It is designed to be connected to an air source.
Further, the first pipe joint 67 has a built-in flow rate adjusting valve having a variable throttle, and the air flow rate can be adjusted by rotating the operator 67a to adjust the opening area of the variable throttle. It has become.

A cover 73 that covers the first air introduction pipe 56 and the second air introduction pipe 59 is attached to the substrate portion 50 and the support plate portion 51 of the support arm 22 by screws 74. In this cover 73, the top plate 73a, the bottom plate 73b, the front plate 73c, and one side plate 73d are integrally connected, and the nozzle member 11 is forward from the opening 73e formed at the side end of the front plate 73c. It protrudes toward (the rear wall 15a side of the inner box 15). When the cover 73 is attached to the support arm 22 as shown by a chain line in FIG. 11, a square box-shaped support box 75 is formed, and the first air introduction pipe 56 and the second air introduction are introduced inside the support box 75. The tube 59 is accommodated, and the nozzle member 11 is supported by the front end of the support box 75.
With this configuration, the solder debris that is peeled off from the trowel tip 1a and scattered is prevented from adhering to the air introduction pipes 56, 59, the joints 57a, 57b, 60a, 60b, and the like.

When the trowel cleaner having the above configuration is attached to the soldering device, the mounting posture of the nozzle member 11 is tilted as shown in FIGS. 12 and 13. It is adjusted by two mounting screws 53, 53 and two pairs of screw insertion holes 54a, 54a and 54b, 54b according to the angle.

Next, when cleaning the trowel tip 1a with the trowel tip cleaner, the solder trowel 1 and the solder supply needle 2 are inserted into the cleaner box 10 through the first insertion hole 32 and the second insertion hole 33 in an inclined posture. To do. At this time, the nozzle member 11 is housed inside the cleaner box 10 in a non-protruding state as a whole, and the first nozzle hole 12 is formed at the upper end position of the front surface of the nozzle member 11, so that the solder trowel 1 is tilted. Even if the angle and the position of the solder supply needle 2 are different, the solder trowel 1 cleaner box 10 is housed inside the solder trowel 1 cleaner box 10 without causing positional conflict with the nozzle member 11, and the trowel tip 1a is placed in the first nozzle hole 12. You can get closer.
Then, with the trowel tip 1a positioned immediately before the first nozzle hole 12, air is injected from the first nozzle hole 12 and the second nozzle hole 13, and at the same time, the suction mechanism is also activated to activate the cleaner box. The inside of 10 is exhausted by the suction pipe 24.

By doing so, the solder debris adhering to the trowel tip 1a is surely blown off from the horizontally long first nozzle hole 12 by the air jetted linearly in the width direction of the trowel tip 1a instead of in a dot shape. , Fall inside the drawer 16. Then, in the middle of the fall, the falling direction can be changed by the air jetted horizontally and in a flat shape (air curtain shape) from the second nozzle hole 13 that spreads ahead, and the drawer 16 is dispersed and dispersed at the bottom of the drawer 16. It is prevented from falling by concentrating on only a part. As a result, since the solder debris is prevented from accumulating in a columnar shape on a part of the bottom of the drawer 16, the inconvenience that the solder debris accumulated in the columnar shape comes into contact with the trowel tip 1a and reattaches is only eliminated. Therefore, the frequency of discharging the solder debris accumulated in the drawer 16 is reduced, and the trowel cleaner can be used continuously for a long time.

Further, in the solder debris blown off from the trowel tip 1a, the outer lid 18 and the inner lid 20 are provided with the first insertion hole 32 and the second insertion hole 33 in the inner and outer double directions, and the inner lid 20 is second-inserted. Since the opening area of the hole 33 is formed to be small, most of the hole 33 is blocked by the inner lid 20, and it is difficult for the hole 33 to jump out of the cleaner box 10.
However, when it is possible to prevent the solder debris from popping out with only one of the first insertion hole 32 and the second insertion hole 33, it is possible to omit either one of the insertion holes.

A part of the solder debris whose scattering direction is changed laterally by the air from the second nozzle hole 13 after being blown off from the trowel tip 1a by the air from the first nozzle hole 12 is the inner wall surface of the inner box 15. However, if the amount of adhesion increases and the pillar becomes long, it will break due to its own weight and fall into the drawer 16, so there is no inconvenience such as the pillar of solder scraps coming into contact with the trowel tip 1a. It is unlikely to occur.
It is desirable to coat the inner surfaces of the inner box 15 and the drawer 16 with a fluororesin or a fluorine-containing plating layer so that the adhered solder debris can be easily peeled off and can be easily cleaned and maintained. ..

When solder debris accumulates in the drawer 16, as shown in FIG. 4, the drawer 16 is pulled out with the outer lid 18 and the inner lid 20 removed, and the internal solder debris is disposed of. In this case, by preparing a plurality of drawers 16 having the same configuration and using them while exchanging them, it is possible to shorten the downtime of the soldering apparatus when disposing of the solder scraps and increase the operating rate. ..

In the illustrated embodiment, one nozzle member 11 is provided with both the first nozzle hole 12 and the second nozzle hole 13, but two nozzle members are provided inside the cleaner box 10 and one of the first nozzle members is provided. The nozzle member may be provided with the first nozzle hole 12, and the other second nozzle member may be provided with the second nozzle hole 13.

Further, the first air introduction port 45 and the second air introduction port 46 of the nozzle member 11, and the first air relay hole 55 and the second air relay hole 58 of the substrate portion 50 of the support arm 22 are the first air introduction pipe. Although it is connected by 56 and the second air introduction pipe 59, the support arm 22 is formed of a columnar member, and two flows inside the member to replace the first air introduction pipe 56 and the second air introduction pipe 59. By forming the path hole, the first air introduction pipe 56 and the second air introduction pipe 59 can be eliminated.

Further, the second nozzle hole 13 may be formed by arranging a plurality of small holes side by side.

1 Solder trowel 1a Trowel tip 10 Cleaner box 11 Nozzle member 12 1st nozzle hole 13 2nd nozzle hole 16 Drawer 16a Front wall 18 Outer lid 20 Inner lid 22 Support arm 32 1st insertion hole 33 2nd insertion hole 34 1st mask Plate 35 2nd mask plate 41 Air chamber 45 Air inlet

Claims (7)

In a trowel cleaner that cleans the trowel tip by peeling off the solder debris adhering to the trowel tip by injecting air.
The trowel cleaner has a cleaner box having an insertion hole on the upper surface for inserting the trowel tip of the soldering iron, and a nozzle member in which the entire cleaner box is housed.
The cleaner box has a drawer for accommodating and carrying out the solder debris peeled off from the trowel tip, and a support arm extending toward the inside of the cleaner box is attached to the front wall of the drawer, and a nozzle is attached to this support arm. The member is supported and
The nozzle member is formed with a first nozzle hole for injecting air toward the tip of the solder trowel, and the first nozzle hole is an elongated hole elongated in the horizontal direction.
A trowel cleaner for soldering irons. The nozzle member is a block-shaped member having a front end which gradually forms a tapered first nozzle holes, according to claim 1, characterized in that formed on the front upper end position of the front end portion of the nozzle member Trowel cleaner. The trowel cleaner according to claim 1 or 2 , wherein the injection angle of air from the first nozzle hole can be changed by changing the posture of the nozzle member. An outer lid and an inner lid are provided on the upper surface of the cleaner box, and insertion holes for inserting the tip of the solder trowel are formed in the outer lid and the inner lid, respectively, and the first insertion holes formed in the outer lid. The trowel cleaner according to any one of claims 1 to 3 , wherein the opening area of the second insertion hole formed in the inner lid is smaller than the opening area of the inner lid. The first insertion hole is formed in the first mask plate attached to the outer lid, the second insertion hole is formed in the second mask plate attached to the inner lid, and each mask plate is made of a solder trowel. The trowel cleaner according to claim 4 , wherein the trowel cleaner has flexibility and elasticity to the extent that the tip can be deformed when the tip comes into contact with the tip. The trowel cleaner according to any one of claims 1 to 5 , further comprising a second nozzle hole for changing the falling direction of the solder debris peeled from the trowel tip by injecting air.
The trowel cleaner according to claim 6 , wherein the second nozzle hole is formed at a position lower than the first nozzle hole of the nozzle member.

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