JP2015140986A - Drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a positive and uniform drying of small-sized cleaning plated component having a complex shape.SOLUTION: This invention relates to a drying machine comprising a blower 4 for supplying or discharging air in an air blowing passage where supplying or discharging is carried out, a heater 7 for heating air, a drying chamber 9 for passing heating air to be blown and a drum-like container 14 storing an object to be dried in it, reciprocatably or rotatably supported while passing the heating air, provided with a cylindrical circumferential surface at its outer circumference concerning the turning or rotation so as to agitate an object to be dried through the turning or rotation and dry it, and an air guide 47 for guiding discharging air so as to cause heating air adjacent along an arcuate direction at an outer circumference of discharging side at the cylindrical circumferential surface and fed into the drying chamber 9 to be passed in the container 14 and discharged is installed at the discharging side of the drying chamber 9.

Description

  The present invention relates to a dryer suitable for drying a plated product such as a relatively small electronic component having a diameter of several millimeters or less.

  Conventionally, as a dryer as described above, a blower for supplying air, a heater for heating air, a drying chamber, and a drying chamber are accommodated in a blowing path where air is supplied and exhausted, and is rotated or rotated. Known techniques relating to the provision of a bowl-shaped (drum-shaped) container include Patent Document 1 (a point in which a heater, a drying chamber, and an object container are provided in a blowing path), and Patent Document 2 (a point in which the container is rotated). .

Japanese Patent No. 3786399 JP-A-4-76381

However, since the container of Patent Document 1 is left stationary in the drying chamber, drying unevenness occurs depending on the position of the object, and in the case of an object having a cap-shaped recess, it is difficult to remove the cleaning liquid inside. As in Patent Document 2, the object is agitated by rotating the container to prevent drying unevenness. However, even in this case, the flow of heated air in the drying chamber is not uniform with respect to the object inside, and the air flow is obstructed by the container and the object inside and does not touch the object and passes through other spaces. Since it is discharged, there is a drawback that a dry defect is left in a part of the object having a particularly small and complicated shape.
The present invention allows almost all of the heated air blown into the drying chamber to pass through the container as uniformly as possible except for a slight loss and stirs the object irregularly in the air flow. It is an object of the present invention to provide a dryer that eliminates the above disadvantages by applying air from all directions of the object.

  In the present invention for solving the above-mentioned problems, firstly, a blower 4 that supplies and discharges air, a heater 7 that heats air, and heated air that is blown are allowed to pass through a blowing path in which air is supplied and exhausted. The drying chamber 9 contains an object to be dried, is supported so as to be reciprocally rotated or rotated while passing heated air, and has a cylindrical peripheral surface related to the rotation or rotation on the outer peripheral side. In a dryer provided with a drum-like container 14 that stirs and dries dry matter by movement or rotation, and is introduced into the drying chamber 9 adjacent to the exhaust-side outer periphery of the cylindrical peripheral surface along the arcuate direction. An air guide 47 is provided on the exhaust side of the drying chamber 9 to guide the exhaust so that the heated air is discharged through the inside of the container 14.

  Second, the container 14 is supported laterally in a direction in which the drum axis of the drum-shaped container 14 intersects the downward flow of air in the drying chamber 9.

  Third, the cross section of the container 14 is formed into a cylindrical cross section, and the stirring member 38 along the axial direction is used to stir the drying object on the inner peripheral surface side of the container 14 as the container 14 rotates or rotates. It is characterized by providing.

  Fourthly, a guide ring 43 having a cylindrical surface adjacent to the arc-shaped receiving surface 53 on the air guide 47 side is provided on the outer periphery on both ends of the container 14.

  Fifth, the container 14 is formed in a polygonal cross section, and the drying chamber 9 has a cylindrical section 61b having a hollow section 61b having a polygonal cross section in which the container 14 is incorporated or detachably accommodated. A container holder 61 having a cross section is supported and accommodated so as to be able to rotate or rotate. A cylindrical guide surface is provided on the outer periphery of the container holder 61 along the arcuate receiving surface 53 of the air guide 47. It is characterized by.

  According to the present invention configured as described above, almost all objects passing through the drying chamber are guided by the air guide provided on the exhaust side of the drying chamber while the object is agitated by rotation or rotation of the container in the drying chamber. Since heated air passes vertically and horizontally through the container, even if it is a complicated object, especially a cap-shaped small object, there is no unevenness in the drying of the object without the cleaning liquid adhering to or remaining on the surface or inside. There is an advantage that it does not occur.

  In particular, even during rotation or rotation, the container is sealed by being close to the circular cylindrical receiving surface of the air guide with a slight clearance or sliding contact with a brush, felt or the like. Therefore, the air passing through the drying chamber is guided almost certainly by the air guide.

  When the drum axis is in a direction crossing the downward air flow, the stirring of the object is lifted by the stirring member or the polygonal inner surface of the container in the rotating or rotating container, and the object is repeatedly dropped. Therefore, regardless of the shape, the cleaning liquid that has accumulated or adhered to the inside is removed and exposed to heated air, so that all objects can be uniformly and sufficiently dried.

  Furthermore, when a drum-type container is supported laterally, the air flow in the container is downward or diagonally downward, so that a small object is always pressed downward in the container by its wind pressure and its own weight. It will not scatter or be damaged by scattering / collision.

It is the whole front view of the device of the present invention. It is a left view of this invention apparatus. It is a top view of this invention apparatus. It is a perspective view of an air guide. It is sectional drawing which shows the discharge path control structure of the air by the air guide in a drying chamber. It is sectional drawing of a container. It is the whole apparatus front view which shows 2nd Example of this invention. It is the whole apparatus left side view which shows 2nd Example of this invention. It is a plane sectional view of a container showing the 2nd example of the present invention.

  1 to 6 show a first embodiment of the present invention. In a box-shaped main body frame 1, an air supply duct 2, an air supply chamber 3, a fan 4, a fan duct 6, a heater 7 and an air supply are shown. A ventilation path is formed by the duct 8, the drying chamber 9, the exhaust chamber 11, the exhaust duct 12, and a return duct 13 that blows a part of the heated air to the air supply chamber 3, and the drying chamber. 9 is a mechanism common to the dryer of Patent Document 1 according to the applicant's proposal up to the point that a container 14 for storing a drum-like object capable of ventilating with the outside is accommodated in 9.

  The blower 4 is rotationally driven by a fan motor 16 attached to the back side thereof. Reference numeral 17 denotes a drainage drain provided on the bottom surface of the exhaust chamber 11, and the basic configuration of the dryer described above is a publicly known technique common to Patent Document 1, and thus detailed description thereof is omitted.

The drying chamber 9 is provided with an opening 19 with a lid 18 on the side surface, and the container 14 is loaded from the opening 19 with its axis oriented in the front-rear direction and can be driven forward and reverse at a central position. Supported in state. Further, the drying chamber 9 is shielded from the outside except that the upstream end (upper end) is connected to the air supply duct 8 and the downstream (lower end) side is connected to the exhaust chamber 11 via the connection duct 21 when the lid 18 is closed. As shown in the drawing, a sufficient ventilation space is formed on the front, rear, left and right of the container 14 in the drying chamber 9. In the example shown in the figure, the air flow rate of the blower 4 is set to 50 m ³ / min, the heating of the air by the heater 7 is set to 70 ° C., and the rotational speed of the container 14 is set to about 2 to 3 rpm in both forward and reverse directions. No. 14 has a diameter of 260 mm and a length of 280 mm, and the brazing material is made of stainless steel, and a 0.25 mm wire is knitted into a 0.39 mm mesh.

  On the front, rear, left and right sides of the bottom of the drying chamber 9, the rollers 24 are rotatably supported by the front and rear shafts 23, 23, respectively. The shafts 23 are each provided with a driven gear 26 at the front end thereof. Each gear 26 is driven by a drive gear 28 via a relay gear 27 that meshes between the gears 26. A motor 29 drives the drive gear 28, and is attached to the main body frame 1 via a bracket 31 (FIG. 3).

  On the other hand, as shown in FIGS. 5 and 6, the container 14 is formed in a cylindrical shape following a guide ring 43 described later, and a perforated plate made of a stainless steel plate having a large number of holes, or the above-mentioned It consists of a bowl-shaped drum made of such a mesh-like heat-resistant material, and contains a large number of workpieces (drying objects) such as plated parts inside. Circular end plates 32 and 33 projecting in a flange shape from the outer periphery are attached to the openings at both ends, and a collar portion 34 having an L-shaped cross section is provided on the outer periphery of the end plates 32 and 33. Forms a cylindrical surface.

  One end plate of the end plates 32 and 33 has a disc shape so as to block one opening of the container 14, but the other (right side) end plate 33 forms a loading port 36 such as a workpiece in the center. The end plate 33 itself is formed in a ring shape. Reference numeral 37 denotes a lid that is inserted and fitted into the collar portion 34 of the end plate 33 so as to close the insertion port 36 from the outside.

  Further, a plurality of stirring members 38 having an angled cross section projecting inwardly in a mountain shape are provided on the inner peripheral side of the container 14 at equal intervals along the axial direction, and the container 14 rotates in a state in which the workpiece is accommodated. By doing so, it is structured such that the work is repeatedly stirred while being dropped from below. The upper end of the agitation unit 38 (except for the cutout portion 42 described below) is closed by end plates 32 and 33 to prevent the dried object from entering the inside.

  A clip 41 having a hook 41a and an engagement / disengagement lever 41b is provided via a bracket 39 in the end of the lid side of at least one agitating member 38. The outer end is engaged with the outer peripheral end of the lid 37 so as to be freely disengaged, thereby maintaining a closed state. Reference numeral 42 denotes a cutout portion for rotatably accommodating the clip 41, which is provided at a corresponding position on the periphery of the lid 37 and the end plate 33. When the lid 37 is locked, the clip 41 is a guide described below. The structure does not protrude from the circumferential surface of the ring 43.

  The clip 41 may be provided at a plurality of locations on the outer peripheral edge of the lid 37 and the end portion 33, but a locking claw 40 is provided on the inner surface of the collar portion 34 on the other side, and the locking claw 40 and the clip 41 The lid 37 may be clamped. The locking of the lid 37 is not limited to the above mechanism, and any other clip (clamper) or bolt fastening may be used as long as it can be detachably fastened to the end plate 33. It is.

  A collar-shaped guide ring 43 having a certain width is attached or formed on the outer periphery of both ends of the container 14, and corresponds to an arc-shaped receiving surface 53 of an air guide 47 described later, for example, 0.5 to 2 mm. It is held concentrically in close proximity through a degree of clearance.

  A frame-shaped air guide 47 formed so as to surround the exhaust port 46 is attached on the bottom plate 44 of the drying chamber 9 corresponding to the container 14. As shown in FIG. 4, the air guide 47 is formed in a rectangular frame shape with front and rear side walls 48 and 48 and left and right front and rear walls 49 and 49, and a flange-like bottom frame 51 is attached or formed at the lower end thereof. The central exhaust port 52 overlaps and communicates with the exhaust port 46.

  The upper surfaces of the side wall 48 and the front and rear walls 49 form a cylindrical (arc) surface receiving surface 53 that fits and is close to the cylindrical surface of the outer periphery of the guide ring 43 on both the front and rear ends of the container 14 described above. In the drying chamber 9, the container 14 is supported by the collar portions 34 of the front and rear end plates 32, 33 in contact with the four rollers 24 in a substantially horizontal manner and the receiving surface 53 of the air guide 47. The guide ring 43 is close to the guide ring 43 with a clearance of about 0.5 to 2 mm, and is driven to rotate forward and backward by the motor 28 and the gears 26, 27 and 28. At this time, almost all the air in the drying chamber 9 is sent to the exhaust chamber 11 through the container 14 and the exhaust ports 46 and 49 by the guidance of the air guide 47.

  At this time, the container 14 may be continuously rotated at a slow speed. However, in order to uniformly dry the workpiece, it is desirable to rotate the container 14 forward and backward, for example, every 2 to 5 minutes. Moreover, you may make it reciprocate by a fixed angle.

  By rotating the container 14 forward / reversely or continuously while supplying heated air to the drying chamber 9 as described above, almost all of the heated air passes through the container 14 and is discharged from the exhaust ports 49 and 46. As a result, uniform and efficient drying can be realized even for a complex-shaped plated part such as a cap having a concave surface.

  FIGS. 7 to 9 show a second embodiment of the dryer according to the present invention. In this example, the container 14 has a bowl-shaped cylindrical cross section having a polygonal cross section such as a regular hexagon shown in the figure, and a lid at one end. An opening (input) portion 36 with 37 is provided with an end plate 15 having a non-opening at the other end. The end plate 15 may be a mesh plate or a perforated plate similar to the case material.

  On the other hand, a cylindrical container holder 61 that accommodates the container 14 so as to be detachable in the horizontal direction (horizontal direction) is supported in the drying chamber 9 so as to be driven in the horizontal direction and forward and backward. The back side (the center of the machine body) of the container holder 61 is connected to a rotation drive mechanism at the end plate 61a as described below, and the hollow part 61b for inserting and removing the container 14 is connected to the opening 19 of the drying chamber 9. It has an open end.

  The hollow portion 61a has a polygonal (regular hexagonal in this example) cross section into which the container 14 can be inserted, and serves as a mechanism for rotating the container 14 as the container holder 61 rotates.

  The container holder 61 is made of a plastic member such as HT-PVC (heat-resistant hard vinyl chloride), and a plurality of round holes, square holes, or vent holes 62 that are long in the axial direction are formed on the peripheral wall. Thus, the air permeability between the inside of the container 14 and the outside (the drying chamber 9 side) is sufficiently maintained.

  In this case, the fitting relationship between the container holder 61 and the air guide 47 in the drying chamber 9 is the cylindrical surface of the container holder 61 along the cylindrical surface receiving surface 53 of the air guide 47 as in the first embodiment. Is maintained by an adjacent mechanism with minimal clearance that does not impede its rotation. Further, since the inner periphery of the container 14 is formed in a polygonal shape, the rotating plated component is agitated, so that it is not necessary to provide the agitating member 38 as in the first embodiment.

  In this embodiment, the orientation of the container 14 in the drying chamber 9 is shifted by 90 ° in plan view from that of the first embodiment (the axial direction is the left-right direction), and on the container rotation center of the drying chamber 9. The driven gear 26 is pivotally supported on the inner (right back side) surface, and the flange portion 25a at the inner end of the gear shaft 25 of the driven gear 26 is connected to the end plate 61a of the container holder 61 (note: in this example, the container holder 61 and The container holder 61 is rotationally driven together with the driven gear 26.

  The driven gear 26 is rotated or rotationally driven by a motor 29 via a relay gear 27 and a drive gear 28 that are attached together via a bracket 31, and the container holder 61 and the container 14 in this example are placed in the drying chamber 9 on the left and right sides. Supported in the direction. Furthermore, in the front and rear side walls 48 of the air guide 47 at the bottom in the drying chamber 9, the support roller 20 that protrudes slightly from the receiving surface 53 (by the clearance) and freely rotates is in contact with the outer periphery of the container holder 61. The container holder 61 is also supported by the support roller 20.

  In addition, the loading of the work or the like into the container 14 in this example is performed through the insertion port 36 of the container 14, and the insertion port 36 is closed by the lid 37. Although the container holder 61 has a mechanism that is mounted and supported in the drying chamber 9, when the container 14 and the container holder 61 are integrally assembled or integrally molded, the container holder 61 is engaged between the gear shaft 25 and the end plate 61a. By providing a detachable coupling or the like (not shown), it is possible to make the container holder 61 and the container 14 into a type that can be taken in and out.

  The air guide 47 of this example is also installed at the bottom of the drying chamber 9 so as to fit and come close to the outer periphery of the container 14 (container holder 61) with the mechanism as shown in FIGS. Then, all the heated air introduced into the drying chamber 9 passes through the rotating or rotating container 14 and is discharged to the exhaust chamber 11 side.

  Since the mechanism of each part of the dryer other than the above is the same as that of the first embodiment, and the parts having the same reference numerals are the same as those of the first embodiment in function, the repetitive description is omitted.

  In the above embodiment, the outer periphery of the guide ring 43 or the container holder 61 on the container 14 side is a non-contact type with a minimum clearance with respect to the receiving surface 53 of the air guide 47. By attaching an insert (not shown) such as a brush or felt that is elastically slidably contacted to the outer periphery of the guide ring 43 or the container holder 61, the sealing performance on both sides close to each other is improved, and the exhaust port 52 of the air guide 47. It is possible to further increase the amount of air guided to (increase the air passage rate in the container 14).

DESCRIPTION OF SYMBOLS 1 Main body frame 2 Air supply duct 3 Air supply chamber 4 Blower 6 Air blow duct 7 Heater 8 Air supply duct 9 Drying chamber 11 Exhaust chamber 12 Exhaust duct 13 Return duct 14 Container 15 End plate 16 Fan heater 18 Lid 19 Opening 20 Support roller 21 connecting duct 23 shaft 24 roller 25 shaft 25a flange portion 26 driven gear 27 relay gear 28 drive gear 29 motor 31 bracket 32, 33 end plate 34 collar portion 36 slot 37 lid 38 stirring member 39 bracket 40 locking claw 41 clip 41a Hook 41b Engaging / disengaging lever 42 Notch 43 Guide ring 44 Bottom plate 46 Exhaust port 47 Air guide 48 Side wall 49 Front and rear walls 51 Bottom frame 52 Exhaust port 53 Receiving surface 61 Container holder 61a End plate 61b Hollow portion

Claims (5)

  A blower (4) for supplying and discharging air, a heater (7) for heating air, a drying chamber (9) for passing heated air to be blown, and a drying target inside It is supported so as to be able to reciprocate or rotate while passing heated air, and has a cylindrical peripheral surface related to the rotation or rotation on the outer peripheral side, and the dried material is agitated by the rotation or rotation. In the dryer provided with a drum-shaped container (14) to be dried, heated air introduced into the drying chamber (9) is adjacent to the exhaust gas side outer periphery of the cylindrical peripheral surface along the arcuate direction. The dryer which provided the air guide (47) which guides exhaust_gas | exhaustion so that it may pass through the inside of a container (14) and may discharge | emit on the exhaust_gas | exhaustion side of the said drying chamber (9).   The dryer according to claim 1, wherein the container (14) is supported laterally in a direction in which the drum axis of the drum-shaped container (14) intersects the downward flow of air in the drying chamber (9).   The cross section of the container (14) is formed into a cylindrical cross section, and stirring along the axial direction is performed so that the drying object is stirred on the inner peripheral surface side of the container (14) as the container (14) rotates or rotates. The dryer according to claim 1 or 2, further comprising a member (38).   The dryer according to claim 3, wherein a guide ring (43) having a cylindrical surface adjacent to an arcuate receiving surface (53) on the air guide (47) side is provided on the outer periphery on both ends of the container (14).   The cross section of the container (14) is formed into a polygonal cross section, and a hollow section (61b) having a polygonal cross section that accommodates the container (14) in the inside of the drying chamber (9) or is detachably accommodated therein. The container holder (61) having a cylindrical cross section provided is supported and accommodated so as to be able to rotate or rotate. The container holder (61) has an arcuate receiving surface (53) on the outer periphery of the air guide (47). The dryer according to claim 1 or 2, comprising a cylindrical guide surface that is close along.

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