JPH0548248A - Printed wiring board cleaning equipment - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a printed wiring board cleaning device capable of sufficiently cleaning the inside of a small-diameter through hole. [Structure] The printed wiring board 6 to be cleaned is considered as a wall on one side of the sealed chamber, and the cleaning chamber 3 is sealed by the box body 2 and the printed wiring board 6. The pressure cleaning liquid is supplied by the pressure pump 14 into the cleaning chamber 3 thus sealed so that the cleaning liquid is forced to pass through the through holes of the printed wiring board 6. The air captured in the through hole 7 is forced out by the pressurized cleaning liquid, and the inner wall of the through hole 7 can be reliably cleaned. Ultrasonic transducer 1
By applying ultrasonic vibration to the pressurized cleaning liquid by 6, 16 ', the cleaning effect can be enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed wiring board cleaning device. Printed wiring boards are expected to grow significantly in the future as semiconductors develop. The methods for manufacturing printed wiring boards currently in production are roughly classified into three methods: a subtractive method, a partial additive method, and a full additive method, which make electronic devices and devices smaller, more sophisticated, and more multifunctional. As a result, the printed wiring boards used therefor are required to have higher density, higher integration, and finer circuits.

Since a printed wiring board is manufactured through a plurality of steps such as drilling and various chemical treatments, it is necessary to wash the printed wiring board between each step. Since the diameter of through holes has become smaller with the increase in density and integration of printed wiring boards, there is a need for a method and apparatus for effectively cleaning the inside of small through holes.

[0003]

2. Description of the Related Art Conventionally, the following printed wiring board cleaning devices are known. (A) An apparatus for spraying cleaning water onto a printed wiring board by spraying to clean the printed wiring board while horizontally conveying the printed wiring board. (B) A device for immersing the printed wiring board horizontally while immersing it in a water tank for cleaning. In this case, there is also known a device for cleaning while applying ultrasonic vibration to the cleaning water. (C) A device that vertically hangs the printed wiring board with a crane or the like, carries it into a cleaning tank, and sprays cleaning water on the printed wiring board. (D) A device in which a printed wiring board is vertically hung by a crane or the like, carried into a water tank, and the printed wiring board is immersed in cleaning water. In this case, a device that applies ultrasonic vibration to the cleaning water is also known.

[0004]

[Problems to be Solved by the Invention]
The cleaning device for spraying cleaning water on the surface of the printed wiring board of (c) has a problem that the sprayed water is difficult to enter the through hole due to the air in the through hole, and the inside of the through hole cannot be sufficiently cleaned. Most of the washing water flows on the surface of the printed wiring board and forms a water film, so that the spray water does not enter the inside of the through hole.

In the cleaning devices (b) and (d), when the diameter of the through hole becomes small, the cleaning water cannot enter the through hole due to the air accumulated in the through hole.
There is a problem that the inside of the through hole cannot be cleaned sufficiently.
Even if ultrasonic vibration is applied to the cleaning water, air cannot be discharged from the through hole unless a considerably large vibration is applied. Further, due to the viscosity of water, if the diameter of the through hole is small, it becomes more difficult for wash water to enter the through hole.

As described above, the surface of the printed wiring board can be sufficiently cleaned by any of the cleaning devices, but there is a problem that the inside of the small-sized through hole or via hole cannot be effectively cleaned.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a printed wiring board cleaning device capable of efficiently and sufficiently cleaning the inside of a small-diameter through hole. Is.

[0008]

According to the present invention, a sealed cleaning chamber is defined by pressing a printed wiring board against a box body having one end opened. When the pressurized cleaning liquid is supplied into the closed cleaning chamber, the cleaning liquid is forcibly passed through the through hole of the printed wiring board forming one surface of the closed cleaning chamber to clean the inside of the through hole.

According to one aspect of the present invention based on the above principle, a box body having one end opened to define a cleaning chamber therein; disposed along the opening of the box body and spaced from each other. A plurality of transport rolls; a plurality of pressing rolls attached to the box body so as to face the transport rolls and sandwiching a printed wiring board to be cleaned between the transport rolls; A first sealing means attached to the;
A means for closing the opening of the box with a printed wiring board to be cleaned to seal the cleaning chamber, and then supplying a pressurized cleaning liquid into the sealed cleaning chamber;
A driving unit; a first position where the first sealing unit contacts the printed wiring board to be cleaned and seals the cleaning chamber, and a second position where the first sealing unit separates from the printed wiring board. There is provided a printed wiring board cleaning device comprising: a second driving unit that drives the box body.

According to another aspect of the present invention, a box body having one end opened to define a cleaning chamber therein; a plurality of transport rolls arranged along the opening of the box body and spaced apart from each other; A plurality of pressing rolls which are arranged so as to face the carrying rolls and sandwich a printed wiring board to be cleaned between the carrying rolls; two of the pressing rolls are on the first and second side walls of the box body. Arranged so as to extend along, and arcuate notches corresponding to the shape of the pressing roll are provided at both end portions of the third and fourth side walls of the box body; First sealing means attached to the tips of the third and fourth side walls; second sealing means attached to the arcuate notch of the box body and abutting the pressing roll; printed wiring for cleaning the opening of the box body After closing the washing room by closing with a plate, Means for supplying pressurized cleaning fluid to the cleaning chamber; wherein a first driving means for continuously driving the conveyor rolls; printed wiring board cleaning apparatus characterized by comprising a are provided.

[0011]

According to the present invention, the one wall of the cleaning chamber in which the printed wiring board is sealed is constructed. With this configuration, when the pressurized cleaning liquid is supplied into the closed cleaning chamber, the cleaning liquid is forcibly passed through the through holes of the printed wiring board and blown out like a shower. Therefore, even if the diameter of the through hole is small, the cleaning liquid can be forcedly passed through the through hole, so that the inner wall of the through hole can be effectively cleaned.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. First, with reference to FIG. 1, a schematic configuration of a cleaning apparatus according to a first embodiment of the present invention will be described. A cleaning chamber 3 is defined inside the box body 2 having an opening at the lower end, and a printed wiring board 6 to be cleaned, which is conveyed along the opening edge of the box body, is provided all around the opening end of the box body 2. A seal 4 that abuts and seals the inside of the cleaning chamber 3 is provided.

The printed wiring board 6 has a plurality of through holes 7
And has a plurality of transport rolls 8 and a press roll 1.
0 conveys intermittently in the direction of arrow A. The pressing roll 10 is biased in the direction of each of the transport rolls 8 by a biasing means such as a spring (not shown), and the printed wiring board 6 is sandwiched between the transport roll 8 and the pressure roll 10 and transported in the direction of arrow A in the figure. It is like this.

The washing chamber 3 is provided with a pressure pump 1 through a pipe line 12.
4 is connected, and when the pressurizing pump 14 is driven, the pressurized cleaning liquid is supplied into the cleaning chamber 3 via the conduit 12. Water is generally used as the cleaning liquid, but other cleaning liquids can of course be used.

An ultrasonic vibrator 16 for vibrating the cleaning liquid supplied into the cleaning chamber 3 is provided outside the box body 2, and a vibration plate 18 connected to the ultrasonic vibrator 16 is provided in the cleaning chamber 3. It extends inward. By providing the ultrasonic transducer 16 outside the cleaning chamber 3, it is possible to supply a high-pressure cleaning liquid into the cleaning chamber 3. When the pressure of the cleaning liquid supplied into the cleaning chamber 3 is not so high, the ultrasonic transducer 16 ′ may be provided inside the cleaning chamber 3 as an alternative.

An outer tank 20 is provided on the outer side of the box body 2 to prevent scattering of the cleaning solution, and on the lower side of the box body 2, the cleaning solution which has passed through the through holes 7 of the printed wiring board 6 to be cleaned. A cleaning liquid receiving tank 22 for receiving the cleaning liquid is provided, and the cleaning liquid is received by opening the valve 24.
Drained from.

However, the printed wiring board 6 to be cleaned is conveyed in the direction of arrow A while being sandwiched between the conveyance roll 8 and the pressing roll 10 by driving the conveyance roll 8 and stopped in the state shown in the figure. .. In this state, the seal 4 comes into contact with the upper surface of the printed wiring board 6 to seal the inside of the cleaning chamber 3.

The cleaning liquid is supplied by the pressure pump 14 into the cleaning chamber 3 thus sealed. By setting the pressure of the pressurizing pump 14 to ² to 3 kg / cm ² or more and adopting a pump having a large discharge capacity, a larger amount of cleaning liquid than the amount discharged from the through holes 7 of the printed wiring board 6 is supplied to the cleaning chamber 3.
Since it can be sent inside, the pressure of the cleaning liquid in the cleaning chamber 3 is kept high, and the cleaning liquid passes through the through holes 7 of the printed wiring board 6 and is ejected like a shower.
In this manner, the cleaning liquid is forcedly passed through the through hole 7, so that the inner wall of the through hole 7 is cleaned.

By vibrating the pressurized cleaning liquid supplied into the cleaning chamber 3 by the ultrasonic vibrator 16, the cleaning effect on the inner wall of the through hole 7 can be enhanced. Particularly, as in this embodiment, the ultrasonic transducer 16 is provided outside the box body 2 and the vibration plate 18 is provided so as to extend into the cleaning chamber 3, thereby increasing the pressure of the cleaning liquid in the cleaning chamber 3. It is possible to improve the cleaning power.

Next, the construction of the cleaning apparatus according to the second embodiment of the present invention will be described with reference to FIG. In the description of the embodiment shown in FIG. 2, the pressurizing pump for supplying the cleaning liquid into the cleaning chamber and the ultrasonic vibrator for vibrating the cleaning liquid are omitted, but these are actually the first embodiment described above. It is arranged in the same way as and has the same function. 2B is a side view of the cleaning device, and FIG.
2B is a sectional view taken along the line AA, and FIG. 2C is C in FIG. 2B.
It is a -C line sectional view.

As shown in FIG. 2B, the box 26 is composed of a U-shaped main body 28 and a pair of side plates 30 extending in the printed wiring board carrying direction. A seal 32 for sealing the surface of the printed wiring board to be cleaned is attached to the entire circumference of the open end of the box body 26 configured in this way, and a seal 34 is provided between the U-shaped body 28 and the side plate 30. It is provided.

The pair of side plates 30 are screwed at opposite ends thereof to threaded width changing shafts 36 in opposite directions. By rotating the width changing shaft 36, the pair of side plates 30 are moved toward each other or away from each other.

A plurality of transport rolls 38 are provided along the opening of the box 26, and the two transport rolls 38 at the center are provided.
The pressing roll 4 that is urged in the direction of the transport roll so as to face the
0 is rotatably provided on the side plate 30. A ring-shaped shaft seal 42 that doubles as a bearing is provided between the shaft 40 a of the press roll 40 and the side plate 30. The seals 32, 34, 42 are made of neoprene rubber,
Made of natural rubber, Teflon, etc.

In FIG. 2 (A), for clarity, the middle 2
The book transport roll 38 is omitted. Transport roll 38
The shaft 38a is connected to a drive unit (not shown), and the drive unit intermittently drives the transport roll 38.

As in this embodiment, the pair of side plates 30 forming the box body 26 are configured to be movable in a direction toward each other or in a direction away from each other, so that when cleaning printed wiring boards having different widths, the printed wiring boards are cleaned. The width of the cleaning chamber can be changed within a certain range according to the width of the cleaning chamber.

Further, in order to make it possible to wash the printed wiring boards having different lengths, the length of the box 26 defining the washing chamber in the printed wiring board carrying direction is the shortest printed wiring board to be washed. Form shorter than the length of. Then, the printed wiring board is carried by intermittent feeding, and the carrying amount is such that the cleaning portions of the printed wiring board are gradually overlapped. As a result, the entire length of the printed wiring board can be sequentially washed, and a plurality of types of printed wiring boards having different lengths can be washed in the short-length washing chamber.

Further, the seal 3 is used when the printed wiring board is transported.
In order to prevent 2 from coming into contact with the surface of the printed wiring board and causing scratches, the box body 26 is moved upward by a driving means (not shown) when the printed wiring board is conveyed, so that a gap is formed between the box body 26 and the printed wiring board. To At the time of cleaning the printed wiring board, the box 26 is lowered to bring the seal 32 into contact with the printed wiring board to seal the cleaning chamber.

Next, the construction of the cleaning apparatus according to the third embodiment of the present invention will be described with reference to FIG. Although the pressurizing pump and the ultrasonic transducer are omitted in FIG. 3, they are actually arranged in the same manner as the embodiment shown in FIG. 1 and function in the same manner.

Referring to FIG. 3B, the box 46 defining the cleaning chamber has a U-shaped main body 4 as in the second embodiment.
8 and a pair of side plates 50. A seal 52 that abuts the printed wiring board to be cleaned is provided on the lower end surface of the side plate 50.
And a seal 54 is provided between the U-shaped body 48 and the side plate 50.

The seal 52 has a cross-sectional shape as shown in FIG. 4, and it is considered that the seal 52 is closed in the direction of arrow A by the water pressure in the cleaning chamber to improve the adhesion to the printed wiring board to be cleaned. The seals 52 and 54 are made of, for example, neoprene rubber, natural rubber, Teflon, or the like.

The pair of side plates 50 are moved toward or away from each other by rotating the width changing shaft 56, as in the second embodiment described above. This allows
The width of the cleaning chamber can be changed according to the printed wiring boards having different widths.

A plurality of transport rolls 58 are arranged along the open end of the box 46, and a pressing roll 60 is biased in the transport roll direction by a biasing means such as a spring so as to face each transport roll 58. Are provided. Arc-shaped notches are formed at both end portions of the side plate 50 so as to receive the pressing rolls 60 at both ends, and roller seals 64 that abut against the pressing roll 60 are attached to the side plates 50 at the arc-shaped notches. .. The roller seal 64 is also made of neoprene rubber, natural rubber, Teflon, or the like.

Further, a ring-shaped seal 6 also serving as a bearing is provided between the side plate 50 and the shaft 60a of the pressing roll 60.
Two are provided. In the present embodiment as well, as in the second embodiment described above, for the sake of clarity, the center side 2 in FIG.
The book transport roll 58 is omitted.

Also in this embodiment, as in the second embodiment described above, the width of the cleaning chamber can be changed according to the width of the printed wiring board by rotating the width changing shaft 56. Further, in this embodiment, since the roller seal system in which the cleaning chamber is hermetically sealed by the pressing roll 60 is adopted, the printed wiring boards to be cleaned can be continuously conveyed, and even the printed wiring boards having different lengths can be conveyed. The entire length can be easily washed while being transported.

Further, since the roller seal system is adopted, it is not necessary to provide a seal orthogonal to the printed wiring board conveying direction on the box body 46 defining the cleaning chamber. Therefore, the cleaning chamber can be kept closed by the printed wiring board. Even if the printed wiring board is transported, no scratches are generated on the surface of the printed wiring board.

Next, with reference to FIG. 5, an embodiment in which a plurality of face seal cleaning devices as shown in FIG. 2 are provided in the printed wiring board carrying direction will be described. FIG. 5 (A) shows an embodiment of a multi-step face seal for cleaning the printed wiring board from the upper surface, and three cleaning devices 66a, 66b, configured as shown in FIG.
66c are arranged in parallel in the conveyance direction of the printed wiring board 72. An ultrasonic vibration device 68 is attached to the outside of each cleaning device, and a vibration member 70 connected to the ultrasonic vibration device 68 is provided inside the cleaning chamber.

The printed wiring board 72 is intermittently transported in the direction of the arrow in the figure by a transport roll 74 and a pressing roll 76. The cleaning devices 66a and 66b move downward to seal the inside of the cleaning chamber, and the cleaning device cleans the printed wiring board 72. On the other hand, the cleaning device 66c
Is moving upward, and in this state, the printed wiring board 72
Is sent to the cleaning device 66c, the printed wiring board is not scratched.

A plurality of sensors 78 are provided to detect the tip of the printed wiring board 72 to be cleaned, drive control of the transport roll 74, vertical movement control of the cleaning devices 66a, 66b, 66c, and the cleaning devices. Control the supply of pressurized cleaning liquid into the closed cleaning chamber.

FIG. 5B shows the printed wiring board 72 from the bottom.
Is different from FIG. 5A in that each of the cleaning devices 80a, 80b, and 80c is provided below the printed wiring board 72 to be cleaned, and the other configurations are the same.

Next, with reference to FIG. 6, an embodiment of a multi-stage roller seal cleaning device in which a plurality of roller seal cleaning devices shown in FIG. 3 are provided in the printed wiring board conveying direction will be described. FIG. 6A shows an embodiment of a multi-stage roller seal cleaning device that cleans the printed wiring board 72 from the upper surface. The cleaning chamber defined by the cleaning devices 82a to 82c is always closed, and the printed wiring board 72 is transported. It is cleaned while being continuously conveyed by the roll 74 and the pressing roll 76. A plurality of sensors 78 are provided to detect the tip of the printed wiring board 72 to be cleaned, and the supply of the pressurized cleaning liquid to be supplied into the cleaning chambers of the cleaning devices 82a to 82c is controlled based on the detection signal.

FIG. 6 (B) shows an embodiment of a multi-stage roller seal cleaning device for cleaning the printed wiring board 72 from the lower surface. Each cleaning device 84a, 84b and 84c is provided below the printed wiring board 72 to be cleaned. Has been. Figure 6
The other configuration of (B) is similar to that of FIG. 6 (A).

In the embodiment shown in FIGS. 5 (B) and 6 (B) in which a plurality of cleaning devices with upward facing cleaning chambers are combined, the cleaning liquid can be saved. Further, although not particularly shown, the cleaning chambers with the downward facing cleaning devices and the cleaning devices with the upward facing cleaning chambers may be alternately arranged.

Next, with reference to FIG. 7, a method of carrying the printed wiring board in the case of so-called single-step cleaning using one cleaning device will be described. The length of the cleaning device in the printed wiring board transport direction is shorter than the length of the printed wiring board 72 to be cleaned.

First, as shown in FIG. 7A, the 1/3 portion 72a at the tip of the printed wiring board 72 is cleaned, and then, as shown in FIG. 7B, the central portion 72b of the printed wiring board 72 is cleaned. Perform cleaning. In this case, the portion indicated by E is repeatedly washed in the first and second washings. Then, Fig. 7
As shown in (C), the rear end 1/3 portion 72c of the printed wiring board 72 is washed. By washing three times,
The entire surface of the printed wiring board 72 can be washed.

In the above-described embodiment, the entire surface of the printed wiring board 72 is washed by washing three times, but by changing the length of the washing device in the printed wiring board conveying direction, the printed wiring board can be washed twice. The entire surface can be cleaned, or the entire surface of the printed wiring board can be cleaned by cleaning four times or more.

Next, with reference to FIG. 8, the two-stage cleaning provided with two cleaning devices will be described. 8 (A) and 8
The cleaning step (B) is the same as the cleaning step shown in FIGS. 7A and 7B, and the portions 72a and 72b of the printed wiring board 72 are cleaned by the first-stage cleaning device, respectively.
In the cleaning step of FIG. 8C, the rear end 1/3 portion 72c of the printed wiring board 72 is cleaned by the first-stage cleaning device, and the front end 1/3 portion 72a of the printed wiring board 72 is cleaned in the second stage. Clean with equipment.

Next, in FIG. 8D, the printed wiring board 7
The central portion 72b of No. 2 is cleaned by the second-stage cleaning device, and then the rear end 1/3 part 72c of the printed wiring board 72 is cleaned by the second-stage cleaning device in FIG. 8 (E). This allows
All parts of the printed wiring board 72 have been washed twice.

The fields of application of the printed wiring board cleaning apparatus of the present invention will be described below. (A) Cleaning after honing and scrubbing Since the density of printed wiring boards has become higher and the through-hole diameter has become smaller, even if the printed wiring board is washed by the conventional method after honing and scrubbing, a cleaning solution is used. It becomes difficult to pass through the through hole, and cleaning failure occurs. However, by adopting the cleaning device of the present invention, the cleaning liquid passes through the through holes and pushes out the abrasive grains, so that the inside of the through holes can be sufficiently cleaned.

(B) Cleaning after drilling After the holes are formed in the printed wiring board by a drill, the cleaning device of the present invention cleans the cleaning liquid so that the cleaning liquid passes through the holes and pushes out the chips. can do.

(C) Cleaning after Treatment with Various Chemicals In the manufacturing process of the printed wiring board, treatment with various chemicals is required. By cleaning the printed wiring board with the cleaning device of the present invention, the cleaning liquid in the through hole is washed. Has passed,
Since the remaining chemical is pushed out, the inside of the through hole can be thoroughly cleaned.

(D) Application to developing device As the density of fine wiring in printed wiring boards has increased and the diameter of through holes has become smaller, the number of printed wiring boards manufactured by the pattern plating method has increased. In the pattern plating method, when the conventional developing method is used, the developing solution does not sufficiently enter the through hole, so that the unnecessary resist remaining in the through hole remains as a development residue. For this reason, plating does not occur in the through hole, resulting in a defect.

However, by adopting the cleaning device of the present invention as the developing device, the developer is forced to pass through the through hole by pressure to clean the inside of the through hole, so that the resist does not remain in the through hole. Through hole defects can be reduced.

(E) Application to resist stripping apparatus In the production of a printed wiring board by a panel plating method, conventionally, a circuit is formed by a tenting method using a dry film. In this case, the resist on the surface is removed by spraying. Was enough. However, as the density of fine lines in a printed wiring board has increased, an electrodeposition photoresist (photo ED) has recently been developed, and an etching resist has been applied to the inner wall of a through hole.

Therefore, it is necessary to peel and remove the resist in the through hole after the circuit is formed, and the resist in the through hole cannot be sufficiently removed by the conventional spray type resist stripping apparatus, resulting in a defective solder in the assembly process. Will occur more frequently. By adopting the cleaning device of the present invention as the resist stripping device, the stripping agent is forcibly passed through the through holes, so that the resist in the through holes can be sufficiently removed and the occurrence of solder defects can be prevented. You can

(F) Application to Smear Removal Device In the conventional smear removal device that removes smear after drilling when the diameter of the through hole becomes smaller, the removing agent does not sufficiently enter the through hole, resulting in uneven processing. There is a risk of occurrence. When the cleaning device of the present invention is used as a smear removing device, the smear removing agent sufficiently passes through the through holes, so that smear can be effectively removed even when the printed wiring board has a high multilayer structure and the through holes have a small diameter. it can.

(G) Application to a device for removing hole-filling ink After forming a circuit by the hole-filling method, it is necessary to remove the ink in the through holes, but the ink is hard and it becomes difficult to remove the ink from the through holes. In some cases, defective soldering may occur due to remaining ink. When the cleaning device of the present invention is adopted in the ink removing device, ultrasonic vibration is applied to the ink removing agent, so that the ink dissolves quickly and the through hole is opened. When the through hole is opened, the removing agent is forced to pass through the through hole, so that the ink residue in the through hole is eliminated.

[0057]

Since the printed wiring board cleaning apparatus of the present invention is configured as described above in detail, it has an effect of efficiently and sufficiently cleaning the inside of the small diameter through hole.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a diagram showing the structure of a cleaning device that defines a face seal cleaning chamber.

FIG. 3 is a diagram showing a structure of a cleaning device that defines a roller seal cleaning chamber.

FIG. 4 is an enlarged view of part S of FIG.

FIG. 5 is an explanatory diagram of a cleaning device provided with a multi-stage face seal cleaning chamber.

FIG. 6 is an explanatory diagram of a cleaning device provided with a multi-stage roller seal cleaning chamber.

FIG. 7 is an explanatory diagram when one cleaning device is provided and cleaning is performed stepwise.

FIG. 8 is an explanatory diagram when two cleaning devices are provided and cleaning is performed stepwise.

[Explanation of symbols]

 2 Box 3 Cleaning Room 4 Seal 6 Printed Wiring Board 7 Through Hole 8 Transport Roll 10 Holding Roll 14 Pressurizing Pump 16, 16 'Ultrasonic Transducer 18 Vibration Plate

Claims (8)

[Claims] 1. A box body (2,26) having an opening at one end and defining a cleaning chamber (3) therein; disposed along the opening of the box body (2,26) and spaced apart from each other. A plurality of transfer rolls (8, 38); attached to the box body (2, 26) so as to face the transfer rolls (8, 38), and should be washed between the transfer rolls (8, 38) A plurality of pressing rolls (10, 40) for sandwiching the printed wiring board (6);
First sealing means (4, 32) attached to the entire circumference of the opening end of the box (2, 26); the opening of the box (2, 26) is closed by a printed wiring board (6) to be washed After sealing the washing room (3),
Means (14) for supplying pressurized cleaning liquid into the closed cleaning chamber (3)
First drive means for intermittently driving the transfer rolls (8, 32); and the first seal means (4, 32) contacting the printed wiring board (6) to be cleaned so that the cleaning chamber (3 ) A second position for driving the box body (2, 26) between a first position for sealing the inside and a second position where the first sealing means (4, 32) is separated from the printed wiring board (6). A printed wiring board cleaning device comprising: a driving unit; 2. The printed wiring board cleaning according to claim 1, further comprising means (16, 16 ′) for generating vibration in the pressurized cleaning liquid supplied into the closed cleaning chamber (3). apparatus. 3. The box body (26) comprises a U-shaped main body (28) and a pair of side plates (30) extending in the printed wiring board carrying direction, and the U-shaped main body (28) and the side plate (30). ) And a second sealing means (34), and third driving means (36) for driving the side plates (30) toward each other and away from each other. Or the printed wiring board cleaning device according to 2. 4. A box (46) having one end opened to define a cleaning chamber therein; a plurality of transport rolls (58) arranged along the opening of the box (46) so as to be separated from each other. And; the transfer roll (58)
A plurality of pressing rolls (60) arranged to face each other and sandwiching the printed wiring board to be cleaned between the conveyance rolls (58).
Two of the pressing rolls (60) are arranged so as to extend along the first and second side walls of the box body (46), and the third and fourth of the box body (46) are arranged. Arc-shaped notches corresponding to the shape of the pressing roll (60) are provided at both ends of the side wall; first seals attached to the ends of the third and fourth side walls of the box (46). Means (52); said box
Second sealing means (64) attached to the arcuate notch of (46) and abutting the pressing roll (60); and closing the opening of the box (46) with a printed wiring board to be cleaned to form a cleaning chamber. Means (14) for supplying pressurized cleaning liquid into the closed cleaning chamber after sealing
And a first drive means for continuously driving the transport roll (58); 5. The printed wiring board cleaning apparatus according to claim 4, further comprising means (16, 16 ') for generating vibration in the pressurized cleaning liquid supplied into the closed cleaning chamber. 6. The box (46) comprises a U-shaped body (48) having the first and second side walls, and a pair of side plates (50) forming the third and fourth side walls, The U-shaped body (48)
A third seal means (54) is provided between the side plate (50) and the side plate (50), and second drive means (56) for driving the side plates (50) toward each other and away from each other is provided. The printed wiring board cleaning device according to claim 4, which is characterized in that. 7. A printed wiring board cleaning device comprising a plurality of the printed wiring board cleaning devices according to claim 1 provided along a direction in which the printed wiring board is conveyed. 8. A sensor (78) for detecting a printed wiring board is provided on the inlet side of each cleaning device, and a control means for controlling the operation of the cleaning device immediately downstream based on a detection signal of each sensor (78) is provided. The printed wiring board cleaning device according to claim 7, which is provided.