JPH06134420A - Method and apparatus for drying work - Google Patents

Abstract

PURPOSE:To enhance the drying work efficiency of a work by spraying air to the work received in a freely hermetically closable drying tank to scatter the liquid adhering to the work and subsequently supplying hot air into the drying tank to evaporate the liquid before sucking the steam to discharge the same to the outside. CONSTITUTION:A plurality of works W are received in a work receiving box H formed in a basket shape to be passed through a washing process and the works W to which a washing soln. is bonded are received in a drying tank 2 along with the receiving box H in such a state that both flange parts T of the receiving box H are supported by support members 6a, 6b. In this state, at first, compressed air is supplied into an interpolation pipe 12 through a tube 14 and emitted from an emitting orifice 11 to scatter the washing soln. adhering to the works W. Next, hot air is supplied into a hot air duct 21 and injected from a jet orifice 23 to evaporate the washing soln. adhering to the works W into the scattered washing soln. Thereafter, suction force is allowed to act on the suction port 25 of a suction nozzle 24 to suck the steam in the drying tank 2 to discharge the same to the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for drying a work to which a liquid such as a cleaning liquid is attached.

[0002]

2. Description of the Related Art Work pieces such as precision machine parts and electronic parts are processed, washed and rinsed, and then dried to dry the surface and the inside of the work pieces. By the way, as a method of drying the work to which the cleaning liquid is attached in this way, the work is housed in a drying tank whose upper side is opened, and in this state, air is blown to the work with a predetermined air pressure by an air blow nozzle. Part of the liquid adhering to the work is blown by spraying, then hot air is supplied into the drying tank by the hot air duct to evaporate the liquid scattered by the air and the liquid remaining and adhering to the work. Then, the work is dried.

However, in the above method for drying a work, since the upper part of the drying tank is open, when hot air is supplied into the drying tank by the hot air duct, part of the hot air is discharged from above the drying tank. Will end up. Therefore, the supply efficiency of the hot air in the drying tank becomes low, and it takes a long time to evaporate the liquid scattered by the air and the liquid remaining and attached to the work. As a result, there has been a problem in that it takes a lot of time and labor to dry a large number of works.

Since the work is normally stored in the drying tank while being placed on the inner surface of the bottom of the work storage box formed in a basket shape, when the work is dried, the work storage of the work is performed. The liquid intervening in the portion contacting the inner surface of the bottom of the box becomes difficult to dry. Therefore, when the work is dried, it is desired that the contact portion of the work with the inner surface of the bottom of the work storage box be sufficiently dried.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to eliminate such inconvenience, and it is an object of the present invention to provide a work drying method and a work drying apparatus capable of improving the work efficiency of drying a work. To aim.

It is another object of the present invention to provide a work drying device capable of sufficiently drying the contact portion of the work with the inner surface of the bottom of the work storage box.

[0007]

In order to achieve such an object, the present invention provides a method of drying a work to which a liquid such as a cleaning liquid adheres, in which the work is housed in a closed space and in this state. Spraying air of a predetermined air pressure on the work to scatter the liquid adhering to the work;
It is characterized by comprising a step of supplying hot air to the closed space to evaporate the liquid in the space, and a step of sucking the vapor in the closed space and discharging the vapor to the outside. is there.

Further, according to the present invention, in a device for drying a work to which a liquid such as a cleaning liquid is attached, a tank main body having an opening at an upper part and in which the work is accommodated, and an opening of the tank main body are closed. A drying tank composed of a closing member, an air blow nozzle for blowing air having a predetermined air pressure onto the work contained in the drying tank to scatter liquid adhering to the work, and hot air is supplied into the drying tank. Then, a hot air supply means for evaporating the liquid in the drying tank and a discharging means for sucking the steam in the drying tank and discharging it to the outside are provided.

Further, according to the present invention, the air blow nozzle has a cylindrical nozzle body having an outer peripheral surface formed with a discharge port for blowing the air to the workpiece, and the outer peripheral surface and the inner peripheral surface inside the nozzle body. An inner insertion tube having a space formed between it and the inner peripheral surface of the nozzle body and having an opening formed on the outer peripheral surface, and an air supply unit for supplying the air to the inside of the inner insertion tube. It is characterized by.

Further, in the present invention, the air blow nozzle is provided so as to be movable along the work with the discharge port facing the work contained in the drying tank. The discharge port is supported by a moving unit that moves along the work with the discharge port facing the work.

Further, according to the present invention, in a case where the work is placed in the tank main body in a state of being placed on the inner surface of the bottom of a work storage box formed in a basket shape, the suction port of the discharging means stores the work. It is provided so as to slidably contact the outer surface of the bottom of the box along the work, and the suction port is supported by a moving means that slides along the work on the outer surface of the bottom of the work storage box. Is.

[0012]

According to the present invention, a work to which a liquid such as a cleaning liquid is attached is housed in a drying tank whose opening is closed by a closing member, and in this state, the work is blown with an air of a predetermined air pressure. To blow off the liquid adhering to the work, supply the hot air into the drying tank by the hot air supply means to evaporate the liquid in the drying tank, and suck the vapor in the drying tank to the outside by the discharging means. Since it is discharged, it is possible to prevent a part of the hot air supplied into the drying tank from being discharged to the outside. Therefore, it is possible to increase the supply efficiency of hot air as compared with the conventional case, and it is possible to shorten the time for evaporating the liquid in the drying tank.

Further, as an air blow nozzle, a cylindrical nozzle main body having an outer peripheral surface formed with a discharge port for blowing the air onto the work, an outer peripheral surface inside the nozzle main body and an inner peripheral surface of the nozzle main body. An air blow nozzle provided with an insertion tube having a space formed between the insertion tube and the surface and having an opening formed in the outer peripheral surface, and an air supply means for supplying the air to the inside of the insertion tube In this case, the air supplied to the inside of the insertion tube by the air supply means flows out from the opening, is rectified in the space, and is then discharged from the discharge port of the nozzle body and sprayed on the work. For this reason, it is possible to eject uniform air having no ejection unevenness from the ejection port and blow it onto the work.

Further, the air blow nozzle is provided movably along the work with the discharge port facing the work housed in the drying tank, and the air blow nozzle has the discharge port facing the work. When it is supported by a moving unit that moves along the work in a state where it is made to move, for example, by moving the air blow nozzle along the upper surface of the work by the moving unit, air is evenly distributed from the discharge port to the upper surface of the work. Can be sprayed.

Furthermore, in a case where the work is placed in the tank main body while being placed on the inner surface of the bottom of the work storage box formed in a basket shape, the suction port of the discharging means is attached to the outer surface of the bottom of the work storage box. When the suction port is slidably abutted along the work storage box and the suction port is supported by a moving means that slides along the work on the outer surface of the bottom of the work storage box, the suction port of the discharging means is moved by the moving means. By sliding along the work on the outer surface of the bottom of the, the steam in the drying tank is sucked from the suction port and discharged to the outside, and is intervened in the part of the work that comes into contact with the inner surface of the bottom of the work storage box. The liquid is sucked and discharged to the outside.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a front view with a part cut away of a work drying device which is an example of an embodiment of the present invention, FIG. 2 is a left side view with a part cut out of FIG. 1, and FIG. 3 is a longitudinal sectional view of an air blow nozzle. 4, FIG. 4 is a detailed view of part A of FIG. 1, and FIG. 5 is an overall perspective view of the work storage box.

First, for convenience of explanation, the work storage box H in which the work W to which the cleaning liquid is attached is stored will be explained. As shown in FIG. 5, the work storage box H has a linear member S.
Are formed in a basket shape by arranging in a grid pattern having coarse meshes, and a flange portion T is formed at each upper end of both side portions thereof. The work W is stored in the work storage box H while being placed on the inner surface of the bottom of the work storage box H.

Next, a work drying device which is an example of the present invention will be described. In FIG. 1, reference numeral 1 denotes a work drying device, and the drying device 1 includes a drying tank 2 in which a work storage box H in which a work W is stored is accommodated.

The drying tank 2 is provided with a box-shaped tank body 4 having an opening 3 on the upper side, and a cover 5 for closing the opening 3. A work storage box H in which a work W is stored is housed inside the drying tank 2 with both flange portions T being supported by the support members 6a and 6b. The upper ends of the support members 6a and 6b penetrate the cover 5 and project upward, and the projecting portions are fixed to the support arms 7 arranged above the drying tank 2. The support arm 7 is adapted to move in the vertical direction by a drive device (not shown).

Above the work W stored in the work storage box H, an air blow nozzle 8 for blowing air of a predetermined air pressure is arranged along the upper surface of the work W.

As shown in FIG. 3, the air blow nozzle 8 is provided with a square tube-shaped nozzle body 9, and this nozzle body 9 has one corner 10 inside the drying tank 2 for the workpiece W. It is placed horizontally, facing the upper surface (Fig. 2).
reference). Further, the corner portion 10 is cut out along the axial direction, whereby the elongated discharge port 11 is formed in the corner portion 10.

Inside the nozzle body 9, as shown in FIG. 3, a cylindrical insertion tube 12 is provided, the outer peripheral surface of which and the nozzle body 9.
A space is formed between the inner peripheral surface and the inner peripheral surface of the.
On the outer peripheral surface of the insertion tube 12, a plurality of through holes 13 penetrating to the inside are formed at predetermined intervals in the axial direction. As shown in FIG. 2, air inflow pipes 13 extend upward from both ends of the inner insertion pipe 12, and one end of the spiral tube 14 is connected to the tip end of each air inflow pipe 13. ing. The other end of the spiral tube 14 is connected to an air supply means (not shown). Air (normal temperature) having a predetermined air pressure is supplied from the air supply means through the spiral tube 14 and the air inflow tube 13 to the insertion tube 12.
Is supplied inside.

One end of an elongated support plate 15 is connected to the inside of each air inflow pipe 13, and each support plate 1
The other end of 5 penetrates through a slide hole 5a formed in the cover 5 and projects upward. Support plate 15 and slide hole 5a
A seal member (not shown) is provided between and. The above-described support arms 7 are arranged between the support plates 15 protruding upward, and the upper ends of the support plates 15 are connected by the connecting pieces 16 above the support arms 7. A slide member 17 having a concave cross section is fixed to the lower surface of the connecting piece 16, and the slide member 17 is slidably fitted to a guide rail 18 formed on the upper surface of the tip of the support arm 7. In the fitted state, the slide member 18 is connected to the piston rod 20 of the air cylinder 19 mounted on the upper surface of the rear end portion of the support arm 7. By driving the air cylinder 19 to expand and contract the piston rod 20, the air blow nozzle 8
However, with the discharge port 11 facing the work W, the work W
Along with, it is configured to reciprocate in the directions of arrows a and b in FIG.

A hot air duct 21 for supplying hot air into the drying tank 2 is arranged inside the drying tank 2. The rear end portion of the hot air duct 21 penetrates the side wall of the tank body 4 and projects to the outside, and the projecting portion is connected to a hot air feeder (not shown) via a supply pipe 22. On the other hand, the tip portion of the hot air duct 21 is branched into two, and the branch duct 21a,
21b, and these branch ducts 21a, 21
b are arranged to face each other with the work W interposed therebetween.
A plurality of outlets 23 for ejecting the hot air supplied into the hot air duct 21 from the hot air supplier into the drying tank 2 are formed on the side portions of the branch ducts 21a and 21b facing the work W.

Below the work storage box H accommodated in the drying tank 2, the vapor in the drying tank 2 and the cleaning liquid intervening in the portion of the work W contacting the inner surface of the bottom of the work storage box H are sucked below. A suction nozzle 24 that discharges the ink to the outside is disposed. The suction nozzle 24 has an elongated suction port 25 extending in the horizontal direction at the upper end thereof, and the tip of this suction port 25 slidably contacts the outer surface of the bottom of the work storage box H. Further, one end of a suction hose 26 is connected to the suction nozzle 24, and the other end of the suction hose 26 penetrates the side wall of the tank main body 4 and projects to the outside, and then is connected to a suction pump (not shown). . The suction nozzle 24 configured in this manner is slidably supported by a guide mechanism 27 provided at the bottom of the tank body 4, and the suction port 25 is driven by driving the guide mechanism 27 by a drive device (not shown). The suction nozzle 24 reciprocates along the work W in a state where the suction nozzle 24 is in contact with the outer surface of the bottom of the work storage box H.

Next, a method of drying the work W contained in the drying tank 2 will be described. First, air having a predetermined air pressure is supplied from the air supply means to the inside of the insertion tube 12 via the spiral tube 14 and the air inflow tube 13. Then, the air supplied to the inside of the insertion tube 12 flows out from the through hole 13, is rectified in the space K, and is then discharged from the discharge port 11. By rectifying the air in the space K in this manner, uniform air having no discharge unevenness is blown from the discharge port 11 onto the work W to scatter a part of the cleaning liquid adhering to the work W. While the work W is being blown with air, the air cylinder 19 is driven so that the air blow nozzle 8 reciprocates along the work W, whereby the work W is discharged from the discharge port 11. Air can be sprayed evenly on the upper surface of the.

Next, hot air is supplied from the hot air supplier into the hot air duct 21 and jetted into the drying tank 2 from the jet port 23,
The cleaning liquid scattered by the air and the cleaning liquid remaining and attached to the work W are evaporated. At this time, since the opening 3 of the drying tank 2 is closed by the cover 5, it is possible to prevent a part of the hot air supplied into the drying tank 2 from being discharged to the outside. The supply efficiency is improved, and the time for evaporating the cleaning liquid scattered by the air and the cleaning liquid remaining and adhering to the work W can be shortened.

When the suction pump is driven after the cleaning liquid is evaporated, the vapor in the drying tank 2 is sucked from the suction port 25 of the suction nozzle 24 and then discharged to the outside via the suction hose 26. It At this time, the guide mechanism 27 is driven by the driving device, and reciprocates along the work W with the suction nozzle 24 abutting the suction port 25 on the outer surface of the bottom of the work storage box H.
As shown in FIG. 4, the cleaning liquid present in the portion of the work W that abuts the inner surface of the bottom of the work storage box H is sucked from the suction port 25 and discharged to the outside.

The present invention is not limited to the above embodiments, but can be modified as appropriate without departing from the scope of the present invention. For example, in the above-mentioned embodiment, the air W is blown from the discharge port 11 to the work W by supplying the air having a normal temperature to the air inflow pipe 13, but instead of this, the air supply unit is used. It is also possible to blow hot air to the work W from the discharge port 11 by supplying high temperature air, that is, hot air, to the air inflow pipe 13.

[0030]

As is apparent from the above description, according to the present invention, hot air is supplied into the drying tank whose opening is closed by the closing member to evaporate the liquid in the drying tank, and by the discharging means. The steam in the drying tank is sucked and discharged to the outside. Therefore, it is possible to prevent a part of the hot air supplied into the drying tank from being discharged to the outside. As a result, the supply efficiency of hot air is higher than in the conventional case, the time for evaporating the liquid in the drying tank can be shortened, and the work for drying the work can be made more efficient.

Further, as an air blow nozzle, a cylindrical nozzle body having a discharge port for blowing the air onto the work is formed on the outer peripheral surface, the outer peripheral surface inside the nozzle body and the inner peripheral surface of the nozzle body. In the case of using an air blow nozzle equipped with an insertion tube having a space formed between them and having an opening formed in the outer peripheral surface, and an air supply means for supplying the air to the inside of the insertion tube, The air supplied to the inside of the insertion tube by the air supply means flows out from the opening, is rectified in the space, and is then discharged from the discharge port of the nozzle body and blown onto the work. For this reason,
Uniform air with no discharge unevenness can be discharged from the discharge port and blown onto the work, and it is possible to prevent uneven drying of the work.

Further, an air blow nozzle is provided movably along the work with the discharge port facing the work housed in the drying tank, and the air blow nozzle is provided with the discharge port facing the work. When supported by a moving means for moving along the work, for example, by moving the air blow nozzle along the upper surface of the work by the moving means, air can be blown evenly from the discharge port to the upper surface of the work. .

Further, in the one in which the work is placed in the tank main body while being placed on the inner surface of the bottom of the work storage box formed in a basket shape, the suction port of the discharging means is provided on the outer surface of the bottom of the work storage box along the work. When the suction port is supported by a moving means that slides along the workpiece on the outer surface of the bottom of the work storage box, the suction port of the discharge means is moved by the moving means to the bottom of the work storage box. By sliding along the work on the outer surface, the vapor in the drying tank is sucked from the suction port and discharged to the outside, and the liquid intervening in the portion of the work that abuts the inner surface of the bottom of the work storage box is sucked. Since the work is discharged to the outside, the contact portion of the work with the inner surface of the bottom of the work storage box can be sufficiently dried.

[Brief description of drawings]

FIG. 1 is a front view in which a part of a work drying device according to an embodiment of the present invention is cut away.

FIG. 2 is a left side view in which a part of FIG. 1 is cut away.

FIG. 3 is a vertical sectional view of an air blow nozzle.

FIG. 4 is a detailed view of a portion A of FIG.

FIG. 5 is an overall perspective view of a work storage box.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Work drying device, W ... Work, H ... Work storage box, 2 ... Drying tank, 5 ... Cover, 8 ... Air blow nozzle, 11 ... Discharge port, 9 ... Nozzle body, 12 ... Internal insertion tube, 1
3 ... through hole, K ... space, 19 ... air cylinder, 21 ...
Hot air duct, 24 ... Suction nozzle, 27 ... Guide mechanism

Claims (5)

[Claims] 1. In a method for drying a work to which a liquid such as a cleaning liquid is attached, the work is accommodated in a closed space, and in this state, air having a predetermined air pressure is blown to the work to blow the work. A step of scattering the adhering liquid, a step of supplying hot air to the closed space to evaporate the liquid in the space, and a step of sucking the vapor in the closed space and discharging it to the outside. A method for drying a work, which is characterized by being provided. 2. A device for drying a work to which a liquid such as a cleaning liquid is attached, which comprises a tank main body having an opening at an upper part and in which the work is accommodated, and a closing member for closing the opening of the tank main body. A drying tank, an air blow nozzle that blows air of a predetermined air pressure on the work contained in the drying tank to scatter liquid adhering to the work, and hot air is supplied into the drying tank to perform the drying. A device for drying a work, comprising: a hot air supply means for evaporating the liquid in the tank; and a discharge means for sucking the steam in the drying tank and discharging it to the outside. 3. The air blow nozzle has a cylindrical nozzle body having an outer peripheral surface on which a discharge port for blowing the air to the work is formed, and the inner peripheral surface of the nozzle body and the inner surface of the nozzle body. It is characterized by further comprising: an insertion tube having a space formed between the insertion tube and the peripheral surface and having an opening formed in the outer peripheral surface; and an air supply means for supplying the air to the inside of the insertion tube. The work drying device according to claim 2. 4. The air blow nozzle is provided so as to be movable along the work with the discharge port facing the work stored in the drying tank, and the air blow nozzle is provided with the discharge port. The work drying device according to claim 3, wherein the work drying device is supported by a moving unit that moves the work along the work while facing the work. 5. In the one in which the work is placed in the tank main body while being placed on the inner surface of the bottom of the work storage box formed in a basket shape, the suction port of the discharging means is the outer surface of the bottom of the work storage box. 5. The suction means is slidably provided along the work, and the suction port is supported by a moving means that slides along the work on the outer surface of the bottom of the work storage box. Alternatively, the work drying device according to item 4.