JP2010075868A - Foreign matter removing apparatus and foreign matter removing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foreign matter removing apparatus and a foreign matter removing method by which foreign matter can be certainly removed without gathering the foreign matter and cost reduction can be attained. <P>SOLUTION: The foreign matter removing apparatus 10 removes the foreign matter stuck to a workpiece by air blow and is provided with a work space 13 where the workpiece is put in to remove the foreign matter. Further the foreign matter removing apparatus 10 is provided with an air supply duct 20 which is provided at an upper side of the work space 13 and blows air to the work space 13 and a swirling space 16 which is successively provided at a lower side of the work space 13. Further the apparatus 10 is provided with an air nozzle 15 which is arranged at a predetermined angle to an inclined face for forming the swirling space 16 and ejects high pressure air to the inclined face after taking-out the workpiece to generate tornado T after hitting against the inclined face. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a foreign matter removing apparatus and a foreign matter removing method for removing foreign matters such as dust adhering to a workpiece such as manufactured parts by air blow.

As an example of a conventional foreign matter removing device, an enclosing case with four sides closed, a central nozzle and a peripheral nozzle that generate a swirling flow in the enclosing case, and a plurality of swirling flows generated in the enclosing case are directed downward. There is known a foreign matter removing device provided with a blade (see, for example, Patent Document 1).
JP 2008-126201 A

However, in the foreign matter removing apparatus disclosed in Patent Document 1, since the swirling flow is only in one direction, there is a possibility that the foreign matter accumulates and is not removed.
In addition, since the central nozzle is moved up and down, if the timing is shifted, foreign matter tends to accumulate in the nozzle installation portion in the circumferential wall direction, and there is a possibility that the foreign matter cannot be removed reliably. And it was easy for the foreign material to collect on the blade | wing arrange | positioned in the enclosure case.
Furthermore, since a plurality of central nozzles, peripheral nozzles, and blades are used as components for generating the swirl flow, the number of components increases, which has been an obstacle to cost reduction.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a foreign matter removing apparatus and a foreign matter removing method capable of reliably removing foreign matters without accumulating them and reducing costs. To do.

The above object of the present invention is to provide a work case for forming a work space where foreign matter adhering to the surface of the work is removed, and an air supply air provided toward the work space. A foreign matter removing device that removes the foreign matter by air blowing.
A spiral case that is continuously provided on the lower side of the work case, has an inclined surface that is tapered from the workspace side downward, and forms a spiral space for generating a spiral; Is installed at a predetermined angle with respect to the inclined surface, and is provided on the lower side of the spiral case, and an air nozzle that injects high-pressure air before the work after the removal work is taken out and the next work enters. An exhaust duct that sucks exhaust air that has passed through the work space, and the high-pressure air hits the inclined surface and rises along the inclined surface, and the upward swirling flow is centered above the workspace This is achieved by a foreign matter removing device that generates a downward swirling flow that descends from the vicinity toward the exhaust duct.

According to the foreign matter removing apparatus having the above configuration, the high-pressure air jetted from the air nozzle into the spiral space hits the inclined surface in the spiral space, and ascends along the inclined surface toward the work space, A swirl flow that descends while swirling from the swivel center at the top of the space is created.
In this way, for example, after the workpiece before painting is put in the workspace, foreign matter adhering to the workpiece surface is removed with an air gun or the like, the workpiece is removed from the workspace, and then remains in the workspace. The foreign matter is efficiently and reliably discharged by this swirling flow. This swirling flow is not a swirling flow in one direction, but is a high-speed swirling flow with a long flow path that rises from the swirl space to the work space and then descends to the center of the swirl space, and reliably removes foreign matter without accumulating. be able to.
In addition, since the swirl flow is generated only by applying the high-pressure air jetted from the air nozzle to the inclined surface in the spiral space, the number of parts can be reduced and the cost can be reduced.

  Moreover, in the foreign material removal apparatus having the above-described configuration, it is preferable that the work case includes an opening for taking in and out the workpiece.

According to the foreign substance removing apparatus having such a configuration, unlike the sealed type, since the workpiece can be taken in and out through the opening, it is unnecessary to open and close the door and the like, and the removal work can be performed well. it can. Even if a part of the work case is opened, a swirl flow is generated, so that no foreign matter enters from the outside.
In addition, when removing a foreign material by putting a workpiece | work in a work space, it is more preferable to adjust, and to make weak or stop after adjusting the high pressure air injected from an air nozzle.

  In the foreign matter removing apparatus having the above-described configuration, it is preferable that the suction pressure of the exhaust air is higher than the supply pressure of the supply air.

  According to the foreign matter removing apparatus having such a configuration, the suction pressure of the exhaust air discharged from the exhaust duct is larger than the supply pressure of the supply air supplied from the supply duct, so that the high-pressure air is in the spiral space. It is possible to efficiently generate a swirl flow that descends while swiveling around the center of the work space after being lifted toward the upper work space while swirling on the slant surface and swiveling the slant surface. Thereby, the removed foreign matter can be smoothly discharged.

The above object according to the present invention is a foreign matter removing method in which the work is disposed in the work space from an opening through which the work is taken in and out, and the foreign matter adhering to the work is removed by air blow,
The work after the removal work is taken out, and before the next work enters, supply air is blown down from above toward the work space, and exhaust air that has passed through the work space is sucked from below. In addition, high-pressure air is jetted from the lateral direction toward the inclined surface, the high-pressure air hits the inclined surface and rises while turning along the inclined surface, and turning around the turning center of the rising swirl flow A descending swirl flow is generated, and the foreign matter adhering to the periphery of the work space is removed by the ascending swirl flow and the descending swirl flow.

According to the foreign matter removing method having the above-described configuration, the injected high-pressure air hits the inclined surface in the spiral space, rises toward the work space while turning along the inclined surface, and the swirl is performed at the upper portion of the work space. Creates a swirling flow that descends while swirling from the center.
In this way, for example, after the workpiece before painting is put in the workspace, foreign matter adhering to the workpiece surface is removed with an air gun or the like, the workpiece is removed from the workspace, and then remains in the workspace. The foreign matter is efficiently and reliably discharged by this swirling flow.
In addition, since the swirl flow is generated only by applying the high-pressure air jetted from the air nozzle to the inclined surface in the spiral space, the number of parts can be reduced and the cost can be reduced.

  According to the foreign matter removing apparatus and the foreign matter removing method according to the present invention, the foreign matter removing apparatus and the foreign matter removing method for removing the foreign matter adhering to the workpiece by air blowing can be reliably removed without accumulating the foreign matter, and the cost Reduction can be achieved.

  Hereinafter, a plurality of preferred embodiments of the present invention will be described with reference to FIGS.

(First embodiment)
1 is a front view of a foreign matter removing apparatus according to a first embodiment of the present invention, FIG. 2A is a front view of a work space and a spiral space in the foreign matter removing apparatus of FIG. 1, and FIG. Fig. 3A is a sectional view taken along line II of Fig. 3A, Fig. 3 is an external perspective view illustrating a foreign matter removing process of the workpiece of the foreign matter removing apparatus of Fig. 1, and Fig. 4 is a foreign matter removing process in the work space after Fig. 3. It is an external perspective view.

  As shown in FIG. 1, the foreign matter removing apparatus 10 according to the first embodiment of the present invention is a work in which a work case 12 having a work space 13 and a spiral case 14 having a spiral space 16 to which a pair of air nozzles 15 are attached are fixed. A base 11 is provided. Further, the supply / discharge base 17 to which the air supply device 18 and the exhaust device 19 are fixed, the air supply duct 20 connected to the work space 13 of the work case 12 and the air supply device 18, and the spiral space of the spiral case 14. 16 and an exhaust duct 21 connected in communication with the exhaust device 19.

  The work case 12 and the spiral case 14 are connected. Therefore, the spiral space 16 is connected to the work space 13 so as to face the work space 13.

The air nozzle 15 communicates with an air supply means (not shown), and, for example, high-pressure air (compressed air) of 0.5 m ³ / min (about 0.5 MPa) from the position facing the spiral case 14 into the spiral space 16. ).

The air supply device 18 is driven to supply, for example, 16.2 m ³ / min of air into the work space 13 from the upper end of the work case 12 through the air supply duct 20. The air supply device 18 incorporates a filter (not shown).

The exhaust device 19 is driven to generate a suction pressure higher than the air pressure generated by the air supply device 18, for example, 17.2 m ³ / min (about 17 MPa). The air in the spiral space 16 and the work space 13 is sucked and exhausted from the lower end of 14. The exhaust device 19 incorporates a filter (not shown).

  As shown in FIGS. 2A and 2B, the work space 13 of the work case 12 is formed in, for example, a rectangular cylindrical shape having a width dimension L1 of 590 mm and a height dimension L2 of 400 mm and having a top plate 22. Has been.

  The spiral space 16 of the spiral case 14 has an upper end portion of the same rectangular shape as the lower end portion of the work case 12, and the lower end portion thereof has, for example, a circular inner diameter dimension L3 of 200 mm and a height dimension L4 of 500 mm. It is formed in an inverted frustoconical cylindrical shape. The spiral space 16 has, for example, an inclination angle β1 of 50 ° to 85 °, preferably 70 ° with respect to the horizontal plane.

The air nozzle 15 is a tube having an inner diameter of φ3.0 mm, for example, and has an elevation angle α1 with respect to the exhaust direction, for example, at a position where the distance L5 is lowered by 100 mm from the upper end of the spiral case 14, for example. It is inclined 15 ° to 45 °, preferably 30 °.
Further, the air nozzle 15 has, for example, an inclination angle β2 of 10 ° with respect to the tangent to the spiral space 16 of the spiral case 14.

  Next, with reference to FIG. 3 and FIG. 4, the detailed structure of the foreign substance removal apparatus 10, the foreign substance removal process of the workpiece | work using the foreign substance removal apparatus 10, and the foreign substance removal process in a workspace are demonstrated.

  As shown in FIG. 3, the work case 12 is formed with an opening 23 that is sufficiently larger than the outer shape of the workpiece W and is always open on the side surface.

  In the foreign matter removing step of the work W, the work W such as a lens of a vehicle lamp before painting is placed in the work space 13 through the opening 23 of the work case 12, and the air supply device 18 and the exhaust device are placed. 19 is driven, and high pressure air (compressed air) is blown from the air gun 24 onto the work W using the air gun 24 or the like.

  The foreign matter adhering to the workpiece W blown with high-pressure air from the air gun 24 is sucked into the exhaust device 18 through the spiral space 16. At this time, high-pressure air is not ejected from the air nozzle 15.

  As shown in FIG. 4, when the foreign matter removal process of the workpiece W is completed, the workpiece W is taken out from the work case 12 and transferred to the next coating process or the like, and then the foreign matter removal process in the work space 13 is executed.

In the foreign matter removing process in the work space 13, the air supply device 18 and the exhaust device 19 are continuously driven, and high pressure air is injected from the air nozzle 15 into the spiral space 16.
The high-pressure air jetted from the air nozzle 15 into the spiral space 16 hits an inclined surface in the spiral space 16 and generates an upward swirling flow toward the work space 13 while rotating along the inclined surface. This upward swirling flow rises along the outer periphery in the spiral space 16. And it becomes a downward swirl flow descending from the swivel center toward the spiral space 16 while swirling in the work space 13.

The ascending swirl flow and the descending swirl flow create a tornado T that is a long flow path and a high-speed swirl flow. Therefore, the foreign matter remaining in the work space 13 is forcibly discharged into the spiral space 16 by the tornado T and sucked into the exhaust device 19 through the exhaust duct 21.
The tornado means an upward swirling flow that rises while the outer side swivels in one direction, and has a downward swirling flow that falls while the inner center turns in one direction.

As described above, according to the foreign matter removing apparatus 10 of the first embodiment, the high-pressure air injected from the air nozzle 15 into the spiral space 16 hits the inclined surface in the spiral space 16 and swirls along the inclined surface. The tornado T that is a swirling flow that rises toward the work space 13 and descends while swirling around the center of the work space 13 is created.
As a result, after the workpiece W is put into the workspace 13 and foreign matter adhering to the workpiece W is removed by the air gun 24, the workpiece W is taken out from the workspace 13 and then remains in the workspace 13. Foreign matter is efficiently and reliably discharged by the tornado T. Further, since the swirl flow is generated by applying the high-pressure air to the inclined surface, the number of parts can be reduced and the cost can be reduced.

  Moreover, since the workpiece | work W can be taken in / out through the opening part 23, a removal operation can be made favorable. Furthermore, when the workpiece W is put into the work space 13 to remove foreign matter, it is preferable to adjust the tornado T so that the tornado T is weakened or stopped.

  Further, the suction pressure sucked by the exhaust device 19 is larger than the air supply pressure supplied from the air supply device 18. Therefore, the high-pressure air jetted from the air nozzle 15 hits the inclined surface in the spiral space 16 and rises toward the work space 13 while turning, and then efficiently moves the tornado T descending while turning around the center in the work space 13. And it can be generated reliably. Therefore, it is possible to smoothly remove the foreign matter adhering to the workpiece.

(Second Embodiment)
Next, a foreign matter removing apparatus according to a second embodiment of the present invention will be described.
5 is an external perspective view of the work space and the spiral space in the foreign matter removing apparatus according to the second embodiment of the present invention. FIG. 6A is a front view of the work space and the spiral space in the foreign matter removing apparatus of FIG. 6 (B) is a cross-sectional view taken along the line II-II in FIG. 6 (A). In addition, in the following 2nd Embodiment, about the structural member which overlaps with 1st Embodiment mentioned above, description is abbreviate | omitted by attaching | subjecting the same code | symbol in a figure.

  As shown in FIGS. 5, 6 </ b> A, and 6 </ b> B, the foreign matter removing apparatus 30 according to the second embodiment of the present invention includes a work case 31 having a cylindrical work space 32 and an inverted truncated cone shape. A spiral case 33 in which a spiral space 34 is formed is provided.

The work space 32 of the work case 31 is formed in, for example, a cylindrical shape having an inner diameter dimension L6 of 600 mm and a height dimension L7 of 500 mm.
The spiral space 34 of the spiral case 33 has a circular upper end having the same diameter as that of the lower end of the work case 31, and the lower end has, for example, an inner diameter dimension L8 of 200 mm and a height dimension L9 of 500 mm. Yes.

  For example, the elevation angle α2 of the air nozzle 15 is inclined by 30 ° with respect to the exhaust direction at a position where the distance L10 is lowered by 100 mm from the upper end of the spiral case 33, for example. Further, the spiral space 34 has, for example, an inclination angle β1 of 70 ° with respect to the horizontal plane.

  The foreign substance removal apparatus 30 of 2nd Embodiment has an effect similar to 1st Embodiment mentioned above. In particular, according to the present embodiment, the work case 31 has a simple cylindrical shape, and similarly, the swirl case 33 can have a simple truncated cone shape, so that it can be easily molded, thereby reducing costs. it can.

In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.
For example, the work space of the work case and the size of the spiral space of the spiral case can be appropriately changed according to the outer shape of the workpiece to be applied.

It is a front view of a foreign substance removal device concerning a 1st embodiment of the present invention. (A) is a front view of a work space and a spiral space in the foreign matter removing apparatus of FIG. 1, and (B) is a cross-sectional view taken along the line II of (A). It is an external appearance perspective view explaining the foreign material removal process of the workpiece | work of the foreign material removal apparatus of FIG. FIG. 4 is an external perspective view illustrating a foreign matter removing step in the work space after FIG. 3. It is an external appearance perspective view of the work space and spiral space in the foreign substance removal apparatus which concerns on 2nd Embodiment of this invention. (A) is a front view of a work space and a spiral space in the foreign matter removing apparatus of FIG. 5, and (B) is a cross-sectional view taken along the line II-II of (A).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Foreign material removal apparatus 12 Work case 13 Work space 14 Swirl case 15 Air nozzle 16 Swirl space 20 Air supply duct 21 Exhaust duct 23 Opening part 30 Foreign material removal apparatus 31 Work case 32 Work space 33 Swirl case 34 Swirl space T Tornado (Swirl flow)
W Work

Claims (4)

A work case that forms a work space in which foreign matter adhering to the surface of the work is removed;
An air supply duct that is provided on the upper side of the work case and blows down air supply toward the work space;
A foreign matter removing apparatus for removing the foreign matter by air blow,
A spiral case that is continuously provided on the lower side of the work case, has an inclined surface that tapers downward from the workspace side, and forms a spiral space for generating a spiral;
An air nozzle that is installed at a predetermined angle with respect to the inclined surface in the spiral space, the high-pressure air is jetted before the work after the removal work is taken out and the next work enters;
An exhaust duct that is provided on the lower side of the spiral case and sucks exhaust air that has passed through the work space;
Generating an upward swirling flow in which the high-pressure air hits the inclined surface and rises along the inclined surface, and a downward swirling flow in which the upward swirling flow descends from the vicinity of the center above the work space toward the exhaust duct. Foreign matter removing device characterized by   The foreign matter removing apparatus according to claim 1, wherein the work case includes an opening for taking in and out the workpiece.   The foreign matter removing apparatus according to claim 1, wherein a suction pressure of the exhaust air is higher than a supply pressure of the supply air. Place the work in the work space from the opening where the work is put in and out,
A foreign matter removing method for removing foreign matter adhering to the workpiece by air blow,
The work after the removal work is taken out, and before the next work enters, supply air is blown down from above toward the work space, and exhaust air that has passed through the work space is sucked from below. In addition, high-pressure air is jetted from the lateral direction toward the inclined surface, the high-pressure air hits the inclined surface and rises while turning along the inclined surface, and turning around the turning center of the rising swirl flow A downward swirling flow that descends,
The foreign matter removing method, wherein the foreign matter attached to the periphery of the work space is removed by the upward swirling flow and the downward swirling flow.

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