JPH077785U - Cleaning device having an injection nozzle whose injection direction is inclined - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] The present invention is to open and close the first and second opening / closing valves alternately every predetermined time by the control unit to switch the first and second liquid passages to perform the first and second injection. The purpose is to control the injection state from the nozzle and improve the cleaning work efficiency. Therefore, a vertical transport mechanism for vertically transporting the non-cleaning object is provided, and the spraying direction is inclined obliquely downward to direct the spraying nozzle of the cleaning device to the central portion of the working tank. An injection nozzle and a lower-stage second injection nozzle whose injection direction is inclined obliquely upward;
First and second liquid passages communicating with the second injection nozzle are provided respectively, and first and second opening / closing valves for opening and closing the first and second liquid passages are provided in the middle of the first and second liquid passages. A control unit is provided that controls the second opening / closing valve to open / close alternately every predetermined time and to switch the injection timing of the first and second injection nozzles.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cleaning device having a spray nozzle with an inclined spraying direction, and particularly when cleaning or rinsing a non-cleaning object such as a metal part or a printed circuit board. The present invention relates to a cleaning device having an injection nozzle with an inclined injection direction for inclining the injection direction of the injection nozzles and performing cleaning at the same time as moving a workpiece in the vertical direction to improve cleaning efficiency or rinsing efficiency.

[0002]

[Prior art]

 Some of the cleaning devices automatically perform a cleaning process, a draining process, a rinsing process, a rinsing process, a draining process, and a drying process in a series of operations.

In other words, in the above-mentioned cleaning process, a workpiece, which is a non-cleaning material to be conveyed, is placed in a cleaning tank and both surfaces of the workpiece are cleaned with a predetermined solution. After this cleaning step, a liquid draining step is required to remove the solution from the work in order to prevent the loss of the expensive solution and to prevent it from mixing with the liquid used in the next step.

In addition, in the rinsing process after the draining process, for example, two-stage treatment is performed. That is, the two steps of the first rinsing step and the finishing rinsing step, which is the second rinsing step, are sequentially performed to perform efficient rinsing work.

Further, after the rinsing step, a draining step for removing the rinsing liquid from the work is required as in the case of the above-mentioned cleaning step.

Then, after performing the draining process, the process proceeds to the drying process of the work, and the drying work is performed.

[0007]

By the way, in the conventional cleaning apparatus, for example, in the process of cleaning a printed circuit board in a workpiece that is not a cleaning object, the printed circuit board is conveyed to the cleaning tank and placed in the cleaning tank. Then, the solution is jetted so as to be directed on both sides of the printed circuit board and in one direction.

As a result, when the printed circuit board is cleaned, the printed circuit boards are cleaned one by one, resulting in poor cleaning efficiency and a long processing time in the cleaning process, which is disadvantageous in practical use. There is an inconvenience.

Further, since the solution is jetted so as to be directed in one direction on both the front and back sides of the printed circuit board, if there is a component placed on the printed circuit board, this component blocks the jetting direction of the solution. Therefore, the cleaning of the base of the parts is not performed sufficiently, the reliability of the cleaning work is reduced, and the usability is poor.

Furthermore, when the high-pressure solution is sprayed onto the non-cleaning material when cleaning the non-cleaning material, the jet flow from the spray nozzle is not sprayed over a wide range, and the area where the solution hits the non-cleaning material is limited. Therefore, especially in the case of non-washed products having a complicated shape, uneven washing sometimes occurs at the time of washing, and improvement is desired.

[0011]

[Means for Solving the Problems]

 Therefore, in order to eliminate the above-mentioned inconvenience, the present invention carries out at least the steps of washing, draining, rinsing, and draining while transporting the non-washed material, and the non-washed material placed in the working tank In a cleaning device having a spray nozzle for spraying a solution, a vertical transport mechanism for vertically transporting the non-cleaning material is provided, and the spray direction is inclined obliquely downward so as to direct the spray nozzle to the central portion of the work tank. The first injection nozzle for the upper stage and the second injection nozzle for the lower stage in which the injection direction is inclined obliquely upward so as to be directed to the central portion of the working tank are formed, and these first and second injection nozzles are respectively formed. First and second liquid passages that communicate with each other are provided, and first and second opening / closing valves that open and close the first and second liquid passages are provided in the middle of the first and second liquid passages, and the first and second liquid passages are closed by the vertical transfer mechanism. Conveying items to be washed vertically That the first of these at the same time, the second on-off valve is opened closing operation at a predetermined time intervals and alternately first, characterized in that a control unit for controlling to switch the injection timing of the second injection nozzle.

[0012]

[Action]

 By devising as described above, the control unit alternately opens and closes the first and second opening / closing valves for a predetermined time, and switches the first and second liquid passages to inject from the first and second injection nozzles. The state is controlled and the cleaning work efficiency is improved.

[0013]

【Example】

 An embodiment of the present invention will be described in detail below with reference to the drawings.

1 to 9 show a first embodiment of the present invention. In FIG. 3, 2 is a cleaning device.

As shown in FIG. 3, the cleaning device 2 is integrally formed, and is arranged in the conveying direction of the basket 4 for accommodating the non-cleaned work 4a (direction from the left side to the right side in FIG. 3). The equipment used for each process is arranged along the line. At this time, the work 4a in the basket 4 is made of metal parts or a printed circuit board, and is accommodated in various states depending on the configuration of the basket 4, such as a state parallel or perpendicular to the conveying direction, or a state in which it is slightly inclined. It is something. Reference numeral 4b is a lid portion of the basket 4.

First, each step of the cleaning device 2 will be described.

As shown in FIG. 8, each step of the cleaning device 2 includes a cleaning step A, a draining step B, a rinsing step C, a water draining step D, and a drying step E. For example, in the rinsing step C, 1 rinsing process C-1 and 2 steps of finishing rinsing process C-2 which is a 2nd rinsing process are performed one by one, and each rinsing process C-1 and C-2 are the 1st, 2nd draining process of the draining process D. Steps D-1 and D-2 are performed.

In addition, the cleaning device 2 includes, from the left side in FIGS. 3 and 4, a cleaning tank 6 used in the cleaning step A, a solution used in the liquid draining step B, and a solution removed by the liquid draining mechanism 8. The draining tank 10 to be stored, the first rinsing tank 12 used in the first rinsing step C-1 of the rinsing step C, the draining mechanism (not shown) used in the first draining step D-1 of the draining step D Drainer (not shown) used for the first rinsing tank 14 for storing the drained drainage solution, the second rinsing tank 16 used for the finishing rinsing step C-2, and the second water unloading step D -2 of the water unloading step D The second draining tank 18 for storing the tin chloride liquid removed by the mechanism and the drying unit 20 used in the drying step E are sequentially arranged.

Then, a transport unit 22 for transporting the basket 4 is provided above a predetermined portion where each process is performed, and a vertical transport mechanism (not shown) for transporting the basket 4 in each tank, that is, in the vertical direction is provided.

The transport unit 22, a vertical transport mechanism (not shown), and each of the cleaning process A, the draining process B, the rinsing process C, the water draining process D, and the drying process E are controlled by a control unit 24 including a computer. ing.

The working tank will be described as the cleaning tank 6 used in the cleaning step A, for example. In the cleaning tank 6, as shown in FIGS. 2, 4 and 5, for the upper stage, the injection direction is inclined obliquely downward (black arrow direction in FIG. 2) so as to be directed to the central portion of the cleaning tank 6. In addition to providing the first injection nozzle 26, there is provided a lower second injection nozzle 28 in which the injection direction is inclined obliquely upward (indicated by the white arrow in FIG. 2) so as to be directed to the central portion of the cleaning 6. First and second liquid passages 30 and 32, which communicate with the first and second injection nozzles 26 and 28, respectively, are provided, and the first and second liquid passages 30 and 32 are provided in the middle of these first and second liquid passages 30 and 32. First and second opening / closing valves 34, 36 for opening / closing the valves 32, 32 are provided, and the first / second opening / closing valves 34, 36 are alternately opened / closed at predetermined time intervals to alternately open / close the first and second injection nozzles 26, 28. The control function to control the injection timing of Providing in addition to part 24.

More specifically, when disposing the first injection nozzle 26 in the cleaning tank 6, the first nozzle passage 38 is bent into a U shape as shown in FIG. One side of the nozzle passage 38 A plurality of, for example, four one side first injection nozzles 26a-1, 26a-2, 26a-3, 26a-4 are arranged in the first nozzle passage 38a, and the first nozzle A plurality of, for example, four other-side first injection nozzles 26b-1, 26b-2, 26b-3, and 26b-4 are arranged in the other-side first nozzle passage 38b of the passage 38, and one-side first injection is performed. The nozzles 26a-1, 26a-2, 26a-3, 26a-4 and the other-side first jet nozzles 26b-1, 26b-2, 26b-3, 26b-4 constitute the first jet nozzle 26.

Then, the one side first injection nozzles 26a-1, 26a-2, 26a-3, 26a-4 and the other side first injection nozzles 26b-1, 26b-2, 26b-3, 26b-4. Are positioned at both corners of the upper portion of the cleaning tank 6, that is, at the upper left portion and the upper right portion in FIGS. 2, 4 and 5, respectively, and the spraying direction is set so as to be directed to the central axis C portion which is the central portion of the cleaning tank 6. It is inclined obliquely downward (in the direction of the black arrow in FIG. 2), for example, 45 degrees (see FIG. 5).

When disposing the second injection nozzle 28, as shown in FIG. 1, the second nozzle passage 40 is bent in a U-shape like the first injection nozzle 26, and A plurality of, for example, four one-side second injection nozzles 28a-1, 28a-2, 28a-3, 28a-4 are arranged in the one-side second nozzle passage 40a of the two-nozzle passage 40, and A plurality of, for example, four second-side second injection nozzles 28b-1, 28b-2, 28b-3, 28b-4 are arranged in the second-side second nozzle passage 40b of the two-nozzle passage 40, and one-side second The second injection nozzle 28 is configured by the injection nozzles 28a-1, 28a-2, 28a-3, 28a-4 and the other side second injection nozzles 28b-1, 28b-2, 28b-3, 28b-4. .

Then, the one-side second injection nozzles 28a-1, 28a-2, 28a-3, 28a-4 and the other-side second injection nozzles 28b-1, 28b-2, 28b-3, 28b-4 are washed. The spray direction is set so as to be positioned at both corner positions of the lower portion of the tank 6, that is, at the lower left portion and the lower right portion in FIGS. 2 and 4 and 5, respectively, and to be directed to the central axis C portion which is the central portion of the cleaning tank 6. It is inclined obliquely upward (in the direction of the white arrow in FIG. 2), for example, 45 degrees (see FIG. 5).

A first liquid passage 30 having one end communicating with the first nozzle passage 38 on the side of the first injection nozzle 26 and the other end communicating with the pump 42 is provided, and a second liquid passage 30 on the side of the second injection nozzle 28 is provided. A second liquid passage 32 is provided, one end of which communicates with the nozzle passage 40 and the other end of which communicates with the pump 42. At this time, the other end sides of the first and second liquid passages 30 and 32 merge to form the pump 42. Of the cleaning tank 6, and the suction side passage 46 of the pump 42 is connected to, for example, the bottom of the cleaning tank 6.

A first opening / closing valve 34 for opening / closing the first liquid passage 30 is provided in the middle of the first liquid passage 30, and a second liquid passage 32 is opened / closed in the middle of the second liquid passage 32. A second opening / closing valve 36 is provided, and the first and second opening / closing valves 34, 36 are connected to the control section 24, and the control section 24 controls opening / closing of the first and second opening / closing valves 34, 36. It is something.

At this time, the control unit 24 controls the first and second on-off valves 34 and 36 to open and close alternately for a predetermined time, for example, every 30 seconds, and the first and second injection nozzles 26 , 28 to switch the injection timing to avoid the collision of the solution and to change the injection direction of the solution during cleaning.

As shown in FIG. 4, the liquid draining mechanism 8 has a hand air gun 48 and a pressure regulating valve 50 for supplying a predetermined pressure of air discharged from the hand air gun 48.

Reference numeral 52 is a heater space provided in the cleaning tank 6, and a heater (not shown) provided in the heater space 52 heats the solution temperature in the cleaning tank 6 by about 60 ° C. is doing.

Next, the operation will be described.

When the work 4a is cleaned in the cleaning tank 6, the controller 24 controls the first opening / closing valve 34 and the second opening / closing valve 36 to be operated for a predetermined time at the same time when the basket 4 is lowered and raised. For example, the opening / closing operation is alternately performed every 0.5 seconds.

Then, the injection timings of the first injection nozzle 26 and the second injection nozzle 28 are switched, and on the first injection nozzle 26 side, the high-pressure solution from the pump 42 reaches the first liquid passage 30, From the first liquid passage 30 through the first nozzle passage 38, the one side first jet nozzles 26a-1, 26a-2, 26a-3, 26a-4 and the other side first jet nozzles 26b-1, 26b-. A high-pressure solution is fed to 2, 26b-3, 26b-4.

On the side of the second injection nozzle 28, the high-pressure solution from the pump 42 reaches the second liquid passage 32, and from the second liquid passage 32 through the second nozzle passage 40, the one-side second injection is performed. The high-pressure solution is supplied to the nozzles 28a-1, 28a-2, 28a-3, 28a-4 and the second injection nozzles on the other side 28b-1, 28b-2, 28b-3, 28b-4. Then, the jetting direction of the solution at the time of cleaning is changed obliquely downward (indicated by a black arrow in FIG. 2) and obliquely upward (indicated by a white arrow in FIG. 2).

At this time, the one-side first injection nozzles 26a-1, 26a-2, 26a-3, 26a-4 and the other-side first injection nozzles 26b-1, 26b-2, 26b-3, 26b-4 are , The solution is sprayed into the cleaning tank 6, and as shown by the broken line in FIG. 6, at the bottom of the cleaning tank 6, the one-side second injection nozzles 28a-1, 28a-2, 28a-3, 28a-4 and other directions. The second side injection nozzles 28b-1, 28b-2, 28b-3, 28b-4 generate two swirl states divided in the directions.

The one-side second injection nozzles 28a-1, 28a-2, 28a-3, 28a-4 and the other-side second injection nozzles 28b-1, 28b-2, 28b-3, 28b-4 are The solution is sprayed into the cleaning tank 6, and as shown by the broken line in FIG. 7, in the upper part of the cleaning tank 6, the one side first injection nozzles 26a-1, 26a-2, 26a-3, 26a-4 direction and the other side first nozzle. The jet nozzles 26b-1, 26b-2, 26b-3, and 26b-4 generate two swirl states divided in the directions.

As a result, in the process of cleaning the work 4a in the basket 4, the high-pressure solution is jetted obliquely downward (black arrow direction in FIG. 2) and diagonally upward (white arrow direction in FIG. 2). It can be changed alternately, the work can be surely cleaned, the cleaning efficiency can be improved, and the processing time required for the cleaning step can be shortened, which is practically advantageous.

Further, the solution is jetted also during the lowering operation and the raising operation of the basket 4, and together with the change of the jetting directions of the first and second jet nozzles 26 and 28, the whole area of the work is thoroughly covered. It can be cleaned, the reliability of the cleaning work becomes great, and the usability can be improved.

Further, by changing the program in the control unit 24, the time when the first and second opening / closing valves 34 and 36 are alternately opened and closed can be arbitrarily set, so that the shape of the non-washed object can be changed. The injection timings of the first and second injection nozzles 26 and 28 can be switched according to the degree of clutter, the efficiency of the cleaning work can be improved regardless of the shape of the non-cleaned product, and the versatility can be increased. Is.

FIG. 10 shows a second embodiment of the present invention. In the second embodiment, the parts having the same functions as those of the first embodiment will be described with the same reference numerals.

The feature of the second embodiment is that the first and second injection nozzles 50 and 52 are configured to be movable up and down, that is, swingable.

That is, as shown in FIG. 10, the vertical movement stroke of the first and second injection nozzles 50 and 52 is set to, for example, 100, and the first and second injection nozzles 50 and 52 are moved during the cleaning time. It moves at a low speed.

By the way, during the lowering operation and the raising operation of the basket 4, the first and second injection nozzles 50 and 52 are also moved in the vertical direction, and the solution is ejected from the first and second injection nozzles 50 and 52. Injecting, cleaning the entire area of the work together with the change of the injection direction of the first and second injection nozzles 50, 52, that is, the central portion of the upper surface of the basket 4 at the upper limit of the first injection nozzle 50. From this to every corner of the basket 4 at the lower limit of the second injection nozzle 52, the bottom part of the bottom surface of the basket 4 can be reliably cleaned, the cleaning work becomes more reliable, and the usability can be improved.

Further, in the cleaning process of the work 4a in the basket 4, the injection directions of the high-pressure solutions of the first and second injection nozzles 50 and 52 can be alternately changed obliquely downward and obliquely upward. Along with the descending and ascending operations of the basket 4 and the upward and downward movement of the first and second injection nozzles 50 and 52, the work can be effectively cleaned, and the cleaning efficiency can be improved. The processing time required for the cleaning step can be shortened, which is practically advantageous.

The present invention is not limited to the first and second embodiments described above, and various modifications can be applied.

For example, in the first and second embodiments of the present invention, the cleaning tank has been described as the working tank, but the first and second injection nozzles are arranged in the rinse tank to improve the rinsing efficiency. It can also be raised.

Further, in the first and second embodiments of the present invention, the cleaning device for the work is explained as the non-cleaning object, but in detail, it should be used for the printed circuit board, the machined product, or other non-cleaning object. Is also possible.

Further, in the first embodiment of the present invention, the first injection nozzle is composed of four one-side first injection nozzles and four other-side first injection nozzles, and the second injection nozzle is provided. Although the nozzle is composed of four one-side second injection nozzles and four other-side second injection nozzles, the number of one-side and other-side injection nozzles can be increased or decreased according to the depth of the working tank. is there.

[0049]

[Effect of device]

 As described in detail above, according to the present invention, a vertical transport mechanism for vertically transporting the non-cleaning object is provided, and the spray nozzle of the cleaning device should be directed toward the center part of the working tank, and the spray direction is inclined obliquely downward. The first injection nozzle for the upper stage and the second injection nozzle for the lower stage in which the injection direction is inclined obliquely upward so as to be directed to the central portion of the work tank, and are connected to these first and second injection nozzles, respectively. First and second liquid passages are provided respectively, and first and second opening / closing valves for opening and closing the first and second liquid passages are provided in the middle of the first and second liquid passages, and the first and second opening / closing valves are provided. Since the control unit for controlling the switching of the injection timings of the first and second injection nozzles by alternately opening and closing at predetermined intervals is provided, it is possible to alternately change the injection direction of the high-pressure solution obliquely downward and obliquely upward. The non-cleaned product And obtained washed, it is possible to improve the cleaning efficiency may be small and the processing time required for the cleaning process.

Further, by spraying the solution during the descending operation and the ascending operation of the non-washed object, the whole area of the non-washed article is washed in every corner in combination with the change of the jetting direction of the first and second jet nozzles. It is possible to improve the reliability of cleaning work and improve usability.

Further, by changing the program in the control unit, the time when the first and second opening / closing valves are alternately opened and closed can be arbitrarily set, depending on the complexity of the shape of the non-washed object. The injection timings of the first and second injection nozzles can be switched, the efficiency of the cleaning work can be improved regardless of the shape of the non-cleaned object, and versatility can be increased.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of first and second injection nozzles showing a first embodiment of the present invention.

FIG. 2 is a schematic view of a cleaning tank.

FIG. 3 is a schematic view of a cleaning device.

FIG. 4 is a schematic configuration diagram of a cleaning device.

FIG. 5 is a schematic front view of a cleaning tank.

FIG. 6 is a diagram showing a swirling state of a solution at the time of jetting by a first jet nozzle.

FIG. 7 is a diagram showing a swirling state of a solution at the time of jetting by a second jet nozzle.

FIG. 8 is a diagram showing each step of the cleaning device.

FIG. 9 is a schematic view of a basket.

FIG. 10 is a schematic front view of a cleaning tank showing a second embodiment of the present invention.

[Explanation of symbols]

 2 Cleaning Device 4 Basket 6 Cleaning Tank 10 Draining Tank 12 First Rinse Tank 14 First Draining Tank 16 Second Rinse Tank 18 Second Draining Tank 20 Drying Section 24 Control Section 26 First Upper Jet Nozzle 28 Lower Second Injection nozzle 30 First liquid passage 32 Second liquid passage 34 First opening / closing valve 36 Second opening / closing valve 42 Pump

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[Procedure amendment]

[Submission date] September 2, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 6]

[Figure 7]

[Figure 9]

[Figure 5]

[Figure 10]

[Figure 8]

Claims (1)

[Scope of utility model registration request] 1. At least cleaning while transporting an uncleaned object,
In a cleaning device having a spray nozzle for spraying a solution to a non-cleaning object located in a working tank while performing each step of draining, rinsing, and draining, a vertical transfer mechanism for vertically transferring the non-cleaning object is provided. A first injection nozzle for the upper stage, in which the injection direction is inclined obliquely downward to direct the injection nozzle toward the central portion of the working tank, and an injection direction is inclined upward toward the central portion of the working tank. A second jet nozzle for the lower stage, and first and second liquid passages communicating with the first and second jet nozzles, respectively, are provided, and first and second liquid passages are provided in the middle of the first and second liquid passages. The first and second opening / closing valves for opening and closing the two liquid passages are provided to convey the non-washed material in the vertical direction by the vertical conveying mechanism and at the same time
An injection nozzle with an inclined injection direction, characterized in that a control section is provided for opening and closing the second opening / closing valve alternately at predetermined intervals for controlling the injection timing of the first and second injection nozzles. Cleaning device.