JP4350598B2 - Drainer - Google Patents

Description

  The present invention relates to a draining device for liquids such as water droplets adhering to the surface of an object to be treated, and more particularly to a draining device suitable for a plate-like object to be treated such as a tray or a pallet.

A draining device improved so that a large area can be simultaneously processed while turning the injection nozzle by the reaction force of the gas injection flow itself injected from the injection nozzle is known (see Patent Document 1). This prior art has the advantage that a rotational drive mechanism is not required. However, when the draining process is performed one side at a time, there is a problem that water droplets blown off from the processing surface tend to be attached to the opposite surface. In addition, when the object to be processed is plate-shaped, there is a problem that the object to be processed fluctuates in an unstable manner due to the blowing pressure of the gas or sometimes blows away. Therefore, particularly in the case of a plate-shaped workpiece, increasing the gas injection amount or increasing the spray pressure has technical difficulties, and there is a limit to the efficient draining process. In addition, there is also known an air volume amplification type injection nozzle that injects gas while increasing the air volume by sucking a nearby gas as the gas is injected (see Patent Document 2 and Patent Document 3).
Japanese Utility Model Publication No. 1-144791 Japanese Utility Model Publication No. 3-44266 Japanese Patent Publication No.57-9861

  In view of the above-described conventional technical situation, the present invention is configured to turn the injection nozzle by utilizing the reaction force of the gas injection flow itself from the injection nozzle, and to apply the spray pressure to the object to be processed. An object of the present invention is to provide a drainer that can improve the processing efficiency by alleviating the influence of the above and increasing the gas injection amount.

In order to solve the above-mentioned problem, in the invention of claim 1, a gas injection means for blowing a gas to a substantially rectangular plate-shaped object to be processed, and a process to be processed in a state of being inclined with respect to the gas injection means A moving means for moving the object relatively, and in a state where the object to be processed is inclined and standing, the liquid component adhering to the object to be processed is moved relative to the gas injection means while the gas is removed. In the draining device for removing by spraying action, the gas jetting means is provided on the nozzle arm rotatably supported, and the nozzle arm is sucking a nearby gas as the gas is jetted to increase the air volume. A jet nozzle for jetting, and the jet nozzle is configured to rotate by jetting the gas from the jet nozzle, and the gas jet means having the above-described configuration is disposed substantially on both sides of the workpiece. A plurality of sets disposed side by side in the vertical direction so that direction, adopting the technical means of simultaneously draining process from both sides of the object to be treated by their gas spray device. If the spray nozzle is disposed so that the distance to the object to be processed is within 50 mm, a better draining action can be obtained. Supporting means may be provided for supporting the plate-shaped workpiece in an inclined state so that it does not fall down when draining and transporting (Claim 3). If the gas injection means is provided in a draining chamber separated from the outside and configured to exhaust at least the draining chamber during draining, the degree of reattachment of the liquid scattered by the draining action to the surface of the workpiece Can be reduced (claim 4). A hot air drying chamber for drying the object to be processed by hot air may be provided on the downstream side of the draining processing chamber (Claim 5).

According to the present invention, the jet nozzle is turned by utilizing the reaction force of the gas jet flow itself from the jet nozzle, and the gas jet stream is blown from both sides to the object to be processed. And since it comprised so that the said to-be-processed object might be moved relatively between the said gas-injection means in the state stood inclining , the following effect can be acquired.
(1) Since the rotation drive mechanism for turning the injection nozzle is unnecessary, the configuration of the gas injection means can be greatly simplified.
(2) Since the spray pressure of the gas jet flow from both sides to the workpiece is balanced, the influence of the spray pressure is greatly reduced, and the stability of the workpiece is improved. Thus, the processing efficiency can be greatly improved.
(3) In particular, since a plurality of gas injection units are arranged in the vertical direction so as to be substantially opposed to both sides across the object to be processed, the injection position of each gas injection unit is determined by the installation of the plurality of gas injection units. As a result, the influence of the spray pressure on the workpiece can be reduced more accurately and stably.
(4) In addition, since the object to be processed is tilted and the object to be processed leans against the lower support portion and is stable, the relative movement with the gas injection means is performed. In combination with this, extremely stable relative movement is possible.
( 5 ) Since an injection nozzle that aspirates nearby gas by injecting gas and amplifies the injection amount is adopted, easy-to-use draining consisting of a simple structure with very good processing efficiency by a large amount of gas injection flow An apparatus can be provided.
( 6 ) If the drainage chamber is exhausted at least during draining, it is possible to reduce the degree to which the liquid scattered by the draining action is reattached to the surface of the workpiece.

The present invention is suitable for draining off a liquid component adhering to the surface of a plate-shaped workpiece having a substantially rectangular shape such as a tray or a pallet after the cleaning treatment. In draining the liquid adhering to the surface of the plate-shaped workpiece, it is effective to spray a large amount of gas with the spray nozzle as close as possible with the workpiece standing. In particular, when there is a recess such as a component insertion part such as a tray, it is difficult to remove the liquid accumulated in the recess when the workpiece is placed horizontally. It is effective to do. The gas jetting means is disposed on both sides so as to be substantially opposed to each other with the object to be processed, and the draining process is performed by operating both the gas jetting means on both sides. In addition, during the draining process, fine droplets fly in the room. Particularly in the case of an air volume amplification type injection nozzle, the droplets are sucked and scales are deposited on the nozzle part, or droplets are deposited on the object to be processed. Therefore, it is effective to evacuate the drainage treatment chamber at least during the drainage treatment. As the injection nozzle, an air volume amplification type injection nozzle that entrains nearby gas and amplifies the air volume several to several tens of times can be used, and it extends in the radial direction around a rotary joint and can rotate. By arranging in an inclined state at the end of the configured nozzle arm, it can be configured to turn by itself utilizing the component of the injection reaction force. Moreover, it is also possible to comprise so that it may turn by the injection | pouring reaction force from the separate small hole formed in the advancing direction back of the trunk | drum of an injection nozzle, without making the injection direction of an injection nozzle incline. In addition, if the center part of a nozzle arm is rotatably supported and an injection nozzle is arrange | positioned at the both ends, the balance on turning operation | movement will become good. Further, three or more nozzle arms may be provided so as to be balanced. When a plurality of injection nozzles are provided on one nozzle arm, at least one of the injection nozzles may be inclined or the small hole for turning may be formed. It is also possible to change the length of each nozzle arm. Furthermore, it is also possible to configure so that the distance from the rotation center of the injection nozzle can be freely adjusted on the nozzle arm. Any number of the injection nozzles may be installed, and the spray nozzles may be arranged by changing the turning radius without arranging them on the same circumference. The gas injection means assembled as described above are arranged in a vertical direction on both sides of the object to be processed and symmetrically arranged in pairs so that the draining process is performed simultaneously from both sides of the object to be processed. Moreover, the draining process is executed while the gas jetting means and the workpiece are moved relatively. It is desirable that the plate-like object to be treated is drained from both sides while being relatively moved in a tilted state, and the spray nozzle is blown close to within 50 mm. In addition , you may comprise so that a draining process may be performed continuously, conveying a to- be- processed object , or it may be comprised so that a to-be-processed object may be stopped and a draining process may be performed intermittently.

As described above, according to the present invention, the draining process is executed simultaneously from both sides with the object to be processed interposed therebetween, so that the gas blowing force from the injection nozzle is balanced and the influence on the object to be processed is greatly increased. Reduced. In particular, since a plurality of gas injection units are arranged in the vertical direction so as to be substantially opposed to both sides across the object to be processed, there are variations in the injection position due to variations in the rotational position of the nozzle arm of each gas injection unit. It is averaged, and the influence of the spray pressure on the workpiece can be reduced more accurately and stably. Accordingly, it has become possible to perform draining treatment in a wide range at once using an air volume amplification type injection nozzle that entrains a nearby gas and amplifies the air volume several to several tens of times. In addition, since the turning force of the injection nozzle is configured to turn by utilizing the reaction force of the injection flow itself, a rotation drive mechanism is not required, and the configuration can be greatly simplified. Incidentally, any type of injection nozzle that can amplify the air volume can be applied, and different types of injection nozzles can be used in combination. In addition, the relative operation of the gas injection unit with respect to the object to be processed can be moved not only in one direction but also in other directions.

  FIG. 1 is a front view showing a first embodiment of the present invention, and FIG. 2 is an enlarged side view showing the draining chamber. In this embodiment, the application example in the case where the object to be cleaned is a tray for placing electronic components side by side is shown. In the figure, reference numeral 1 denotes a carrying conveyor on the carry-in side, and this carrying conveyor 1 is configured to carry a tray 2 as an object to be processed into a cleaning treatment chamber 4 along a guide support member 3. In the cleaning processing chamber, both sides of the tray 2 are cleaned using an appropriate cleaning nozzle (not shown). The tray 2 that has been subjected to the cleaning process is intermittently transferred to the adjacent draining process chamber 6 via the shutter 5, and a draining process of liquid such as water droplets adhering to both surfaces is performed. The tray 2 that has been drained is unloaded from the draining chamber 6 along the guide support member 8 by the carrying conveyor 7 on the carry-out side, and further falls down in the horizontal direction as necessary, and is stacked in a predetermined number of stages, and stacked. It is carried out at.

  Next, a draining process for the tray 2 in the draining chamber 6 will be described. In the present embodiment, the case where the draining process is performed on both surfaces of the tray 2 that has been subjected to the cleaning process in a state where the tray 2 is slightly inclined so as to lean against the guide support member 8 as illustrated in FIG. In this case, when the tray 2 is not stabilized by the impact pressure of the gas blown to the tray 2, the upper portion of the tray 2 may be pressed downward by the pressing member as necessary. On both sides of the inclined tray 2, a first gas injection means 9 and a second gas injection means 10 are disposed opposite to each other. Incidentally, the first and second gas injection means 9 and 10 are configured to be branched from one pressurized gas supply source such as a compressor and supplied with compressed air. The first and second gas injection means 9 and 10 each include three sets of swirl injection means 11 to 16 arranged side by side in the vertical direction. Note that an exhaust device (not shown) is connected to the draining treatment chamber 6, and exhausts air containing liquid components scattered by the blowing of gas from the first gas injection means 9 and the second gas injection means 10 to the outside. It is configured to be able to. In that case, the draining treatment chamber 6 may be exhausted through the cleaning treatment chamber 4.

  3 to 5 are schematic explanatory views for explaining the configuration and operating principle of each of the swirl injection means. FIG. 3 is a front view as viewed from the workpiece, FIG. 4 is a plan view, and FIG. FIG. As shown in the figure, each of the swirl jet means 11 to 16 includes a nozzle arm 18 that is rotatably supported at the center via a rotary joint 17, and jet nozzles 19 provided at both ends of the nozzle arm 18. , 20. As shown in FIG. 5, the injection nozzles 19 and 20 are installed in a state where their injection directions are slightly inclined backward in the turning direction around the rotary joint 17. For this reason, when gas is injected from the injection nozzles 19 and 20, the injection nozzles 19 and 20 center on the rotary joint 17 in the direction indicated by the arrow in FIG. 3 due to the circumferential component of the reaction force of the jet flow. You will turn by yourself. Therefore, since the rotational drive mechanism for turning the injection nozzles 19 and 20 becomes unnecessary, the structure of the turning injection means 11 to 16 can be greatly simplified. In addition, regarding the inclination state of the injection nozzles 19 and 20, as long as it includes at least an inclination toward the rear in the turning direction with the rotary joint 17 as the center, an inclination in another direction may be included. Further, the gas can be supplied to the injection nozzles 19 and 20 through an internal flow passage formed in the rotary joint 17 and the nozzle arm 18.

Thus, the tray 2 as an object to be processed is carried into the cleaning processing chamber 4 via the transport conveyor 1 and when the intended cleaning processing is completed, the tray 2 is transferred to the draining processing chamber 6 to perform the draining processing. In this draining process, while the first gas injection means 9 and the second gas injection means 10 are moved to face each other, gas is blown against the front and back surfaces of the tray 2 to remove the liquid adhering to the surface. Is done. At that time, the jet nozzles 19 and 20 provided in the respective swirl jet means 11 to 16 are swung around the rotary joint 17 by the reaction force of their jet flow as described above, and the uniform gas blowing over a wide range. Attaching action can be given. As described above, in the present embodiment, since the first gas injection means 9 and the second gas injection means 10 are moved to oppose each other, the gas is blown from both sides of the tray 2. The spray pressure is balanced with each other, and the influence on the tray 2 can be eliminated or greatly reduced. Therefore, it is possible to increase the air volume and the spray pressure from the first gas spray means 9 and the second gas spray means 10 to enhance the spray action, and to greatly improve the efficiency of the draining process. In the present embodiment, an intermittent processing method is employed in which the cleaning processing step in the cleaning processing chamber 4 and the draining processing step in the draining processing chamber 6 are intermittently executed in parallel with the tray 2 stopped. However, a continuous processing method is also possible .

It is the front view which showed 1st Example of this invention. It is the expanded side view which showed the draining processing chamber in the Example. It is a schematic front view for demonstrating a structure and operating principle of a rotation injection means. It is the same schematic plan view. FIG. 5 is a right side view of FIG. 4 .

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Conveyor conveyor, 2 ... Tray, 3 ... Guide support member, 4 ... Cleaning process chamber, 5 ... Shutter, 6 ... Draining process chamber, 7 ... Conveyor conveyor, 8 ... Guide support member, 9 ... 1st gas injection means, DESCRIPTION OF SYMBOLS 10 ... 2nd gas injection means, 11-16 ... Turning injection means, 17 ... Rotary joint, 18 ... Nozzle arm, 19, 20 ... Injection nozzle

Claims (5)

Comprising a gas injection means for blowing gas on a plate-shaped object to be processed comprising a substantially rectangular shape, and a moving means for relatively moving the object to be processed in an upright position so as to be inclined with the gas injection means, said A draining device for removing a liquid component adhering to an object to be processed by a gas spraying action while moving the object to be processed relatively with respect to the gas jetting unit in a state where the object is tilted. The injection means includes a nozzle arm that is rotatably supported, and an injection nozzle that is provided on the nozzle arm and that injects gas while increasing the air volume by sucking a nearby gas as the gas is injected. A plurality of sets of gas jetting means configured as described above are arranged side by side in the vertical direction so as to substantially face both sides of the object to be processed, So Draining apparatus characterized by being configured to perform a draining process at the same time from both sides of the workpiece by al the gas spray device.   The draining device according to claim 1, wherein the spray nozzle is disposed so that a distance from an object to be processed is within 50 mm. The draining device according to claim 1 or 2, further comprising support means for supporting the plate-like workpiece in an inclined state so as not to fall down during draining and transport.   The draining device according to any one of claims 1 to 3, wherein the gas jetting unit is provided in a draining chamber separated from the outside, and configured to exhaust the draining chamber at least during draining.   The water draining device according to any one of claims 1 to 4, further comprising a hot air drying chamber that is separated from the downstream side of the water draining processing chamber to dry an object to be processed with hot air.

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