TW201444622A - Cleaning brush for printed wiring board and cleaning machine using same - Google Patents

Abstract

The present invention is to provide a cleaning brush, can carry out cleaning on a printed wiring board without damaging the printed wiring board enables cleaning and transportation of the printed wiring board to be performed without meandering and can allow simple replacement operation at a low cost. The brushes (11) are wound around a metal core (12), the brushes (11) to the left and right of the center are in a state inclined in opposite directions to each other at an equal interval while the extension lines (15), as seen in a plan view, of the core wires (11a) cross each other.

Description

Cleaning brush for printed wiring board and sweeping machine using the same

The present invention relates to a cleaning brush for a printed wiring board and a cleaning machine for a printed wiring board using the cleaning brush.

A printed wiring board for mounting various electronic parts is subjected to a plurality of processing steps such as opening, sizing, etching, and cleaning to form a product. Further, chips, dust, and dirt are generated on the printed wiring board in each processing step, and if it is not removed or cleaned in advance, it is not possible to proceed to the next processing step. Further, between the respective processing steps, it is necessary to arrange or stack the printed wiring boards for the next processing, and the applicant has also proposed various schemes for the arrangement of the printed wiring boards.

In addition, as a method of removing dust or dirt adhering to the printed wiring board between the processing steps, for example, "the surface polishing method of the printed substrate" (see FIG. 9) proposed in Patent Document 1 and "proposed in Patent Document 2" The film polishing apparatus (see FIG. 10) or the "polishing wheel for polishing a printed wiring board" proposed in Patent Document 3 (see FIG. 11).

In the above-described Patent Documents 1 to 3, the surface 2a of the printed circuit board 2 is polished while the eccentric shaft 12 is held eccentrically on the upper surface of the transport unit 3 of the apparatus main body 5 (Patent Document 1). , or "group of the first polishing unit and the second polishing unit The first polishing unit includes a plurality of rows of polishing brushes and a plurality of rows of transport belts alternately interposed between the polishing brushes disposed in the row; the second polishing unit In the same manner as the above-described first polishing unit, the first polishing unit is disposed in parallel with the front portion or the rear portion of the first polishing unit, and the polishing brush for each polishing is located between the plurality of polishing rotary brushes of the first polishing unit. In the case where the rear portion is shifted in the lateral direction (Patent Document 2), or "the strip-shaped core body 4 is provided, and the outer core surface of the strip-shaped core body 4 is wound and concentrically wound. In the material layer 5, the polishing material layer 5 is distinguished from the elongated core body 4 by at least a part of the color phases 5a, 5b, and 5c which are concentric with respect to the elongated core body 4 (Patent Document 3). .

According to the techniques of Patent Documents 1 to 3, it is considered that polishing or cleaning necessary for printing wiring in each processing step can be performed. However, these techniques do not consider the transportation of the printed wiring board itself to be polished or cleaned. "Location change" or "蜿蜒". The polishing wheel or the brush that performs polishing or cleaning of the printed wiring board functions as described above by rotation, and therefore "wears" due to frequent use, and "biased wear" may occur.

If the polishing wheel or brush is "wearing" or "wearing off", the force exerted on the surface of the printed wiring board may also be "biased" due to such conditions, which may cause the printed wiring board on the transport path to move in different directions. . Therefore, the printed wiring board may not advance linearly along the transport path, but may be at a position different from that when it is carried out, or may be "snapped" in the middle of transport.

Therefore, as proposed in Patent Document 5, "the conveyance roller is formed of the same material as the cleaning brush, and a guide roller that restricts the movement of the object to be moved up and down and left and right with respect to the advancing direction" is provided (see FIG. 13).

[Previous Technical Literature]

Patent Literature

Patent Document 1 Japanese Patent Laid-Open No. Hei 5-245754, Abstract, Representative Drawing

Patent Document 2, Japanese Patent Laid-Open No. Hei 11-198022, Abstract, Representative Drawing

Patent Document 3, Japanese Patent Laid-Open No. Hei 6-152107, Abstract, Representative Drawing

Patent Document 4, Japanese Patent Laid-Open No. 2001-161611, Abstract, Representative Drawing

Patent Document 5, Japanese Patent Laid-Open No. Hei 5-23651, Abstract, Representative Drawing

However, in the technique of "providing a guide roller that restricts the movement of the object to be moved up and down and left and right with respect to the advancing direction" as proposed in Patent Document 5, the entire apparatus is increased in size, and the apparatus for cleaning only has to be expensive. By. Further, if there is a limit in the interval between the two guide rolls, it is impossible to prevent the printed wiring board 小 which is smaller than the minimum interval.

In general, in order to prevent the flower or the conveyed person from being smashed, the two rotating bodies that are rotated while being in contact with the surface of the object are provided such that the rotating bodies are "V-shaped", and the rotation is performed. The axial direction of the body is inclined with respect to the advancing direction. However, in order to support or drive two rotating bodies having different axial directions, it is necessary to provide each of the two rotating bodies in such a function, but this causes the structure to be complicated and costly. In particular, in the case of the "cleaning brush" in which the above-mentioned rotating body has to be rotated at a high speed, the flaw preventing mechanism has to be made very complicated and costly.

Further, in Patent Document 5 and Patent Documents 1 to 3, there is no particular concern regarding the polishing wheel or the brush-based consumable that is directly polished or cleaned and must be replaced. Polishing wheel or brush consumables that are directly ground or cleaned and must be replaced, for this reason The running cost of the resulting grinder or sweeper has a large impact. Therefore, it is necessary to perform the replacement work of the polishing wheels or the brushes in a short time and simply.

For example, the brush system is manufactured by the manufacturing method as proposed in Patent Document 4. In the method of manufacturing the brush of Patent Document 4, as shown in FIG. 12, it is considered that "the brush is composed of the brush body 1 and the string-shaped mounting member 2, and the brush body 1 is provided with a plurality of fiber bundles that are folded in a U-shape. The string-shaped mounting member 2 is connected to the base end side of the brush body 7 by stitching, knitting, and the like in a state in which the folded end sides of the respective members are aligned in a line shape. The method includes the steps of: bending a long fiber bundle into a strip-shaped body 10 having a specific width, and fixing the mounting member 2 to the length of the strip-shaped body 10. Each of the two rim portions of the direction; and the strip-shaped body 10 is divided into two brushes in the width direction thereof, thereby providing an assembly which can significantly save the manufacture of the components constituting the brush and the like. The brush used for the electric sweeper, etc., which is required for working hours and expenses, and its method of manufacture."

However, according to the study by the inventors of the present invention, it has been found that in the brush which is constructed in this way, in the middle of cleaning or transporting of the printed wiring board, the "蜿蜒" phenomenon of the printed wiring board is generated anyway, and it is difficult to A processing step is well prepared.

In short, it is necessary to satisfy all of the following three conditions regarding the brush for cleaning the printed wiring board while moving the printed wiring board from one processing step to the next processing step and the cleaning machine using the same.

(1) Cleaning on the printed wiring board can be performed by rotating without causing damage to the printed wiring board.

(2) The printing and wiring board can be cleaned or transported without any problems.

(3) It is easy to perform the cleaning of the printed wiring board directly at a low cost and the replacement work is easy.

Therefore, the inventors of the present invention have conducted various studies on how to perform the above-described (1) to (3) conditions in which the brush for cleaning the printed wiring board can be preferably subjected to various studies. As a result, the present invention has been completed.

That is, a first object of the present invention is to provide a cleaning brush for a printed wiring board which is rotated without causing damage to the printed wiring board, and which also prevents the printed wiring board from being transported on the transport path. Oh, and it's low cost and easy to replace.

Further, a second object of the present invention is to provide a cleaning machine for a printed wiring board which can clean the printed wiring board without causing damage by the rotation of the cleaning brush, and does not rotate by the cleaning brush. Further, the printed wiring board is placed on the transport path, and the cost is low and the cleaning brush can be easily replaced.

In order to solve the above problems, first, the means used in the invention of claim 1 will be described with reference to the symbols used in the description of the following embodiments: "A cleaning brush 10 for a printed wiring board, The brush 11 in which a plurality of brush members 11b for cleaning the printed wiring board are attached to the long and flexible core wire 11a is wound around a core rod 12 that is rotated in a state orthogonal to the conveying direction of the printed wiring board. The original one is characterized in that the left and right brushes 11 located at the center of the mandrel 12 are wound in a state of being inclined at opposite intervals at equal intervals, so that the left and right core wires 11a can be extended in the plan view. Cross each other."

That is, in the cleaning brush 10 of the present invention, the brush 11 in which a plurality of the brush members 11b are attached to the long and flexible core wire 11a as shown in Fig. 1(c) is wound as shown in Fig. 1(a). In the core rod 12, the mandrel 12 is rotated by the cleaning machine 100 of the following claim 2, whereby the surface of the printed wiring board can be printed by the front end of the brush 11b exposed on the surface of the mandrel 12. Cleaning.

When the brush 11 shown in Fig. 1(c) is wound around the mandrel 12, as shown in Fig. 1(b), the core wire 11a constituting the brush 11 is floated on the mandrel 12 by the brush 11b. And elastically supported on the mandrel 12 by the elasticity of the brush material 11b. Further, the surface of the cleaning brush 10 is covered by the respective brush members 11b wound around the brush 11 of the mandrel 12. Therefore, when the cleaning brush 10 is rotated and brought into contact with the printed wiring board, the printed wiring board can be cleaned without damage by the core wire 11a.

Further, in the cleaning brush 10, as shown in Fig. 1(a), the left and right brushes 11 located at the center of the mandrel 12 are wound at equal intervals in opposite directions, so that the left and right core wires can be wound. The overhead extension lines 15 of 11a cross each other. In other words, the plan portions of the respective brushes 11 located on the left and right of the center line 14 intersect each other so as to form a "V" as shown in Fig. 1(a).

When the core rod 12 of the cleaning brush 10 is orthogonal to the conveyance direction of the printed wiring board (direction of the center line 14 shown in FIG. 1(a)) by the cleaning machine 100 described below, and to the left and right When the direction in which the extension lines 15 of the core wires 11a cross each other (the downward direction shown in FIG. 1(a)) is rotated, the brush 11 located on the right side of FIG. 1(a) appears to move in the left direction of the plan view, and instead, The brush 11 on the left side of Fig. 1(a) appears to move in a right direction in plan view. In other words, when the cleaning brush 10 is rotated to contact the transported wiring board, a force toward the center of the printed wiring board is applied to the printed wiring board from the cleaning brush 10.

Here, if the printed wiring board is shifted to the left side from the center line 14 shown in FIG. 1(a), the brush 11 located on the left side of the center line 14 of the cleaning brush 10 is more in contact with the right side. The force in the right direction generated by the left portion of the brush 11 is greater. On the other hand, if the printed wiring board is offset from the center line 14 to the right side, the brush 11 located on the right side of the center line 14 of the cleaning brush 10 is more in contact with the left side, and thus the right side portion of the brush 11 Produced The force in the left direction is greater. As a result of the above, the center of the printed wiring board is always close to the center line 14 side of the cleaning brush 10, thereby preventing the printed wiring board from being defective.

On the other hand, when the brush 11 of the cleaning brush 10 is worn and must be replaced, the brush 11 wound around the mandrel 12 is removed, and the next new brush 11 is opened and replaced with the core as described above. You can do it on the stick 12. At this time, the old brush 11 is inserted only into the mounting hole 13 of the mandrel 12 or only partially, so that it can be easily removed. Of course, since the mandrel 12 itself is not consumed at all, the user can be used as before.

In other words, the cleaning brush 10 can form the same as the new one by replacing only the brush 11 as a consumable, and the cost of the cleaning brush 10 can be sufficiently reduced.

Therefore, the cleaning brush 10 of the request item 1 can satisfy the following conditions (1) to (3).

(1) Cleaning on the printed wiring board can be performed by rotating without causing damage to the printed wiring board.

(2) The printing and wiring board can be cleaned or transported without any problems.

(3) Low cost and easy replacement work.

Moreover, in order to solve the above-mentioned problem, the means of the invention of claim 2 is: "A cleaning machine 100 for a printed wiring board which is a cleaning brush 10 which is orthogonal to the conveyance direction of the conveyance path 20 and rotates. Cleaning at least the surface of the printed wiring board conveyed on the transport path 20 in the machine, and characterized in that a plurality of brush materials for cleaning the printed wiring board at the front end are attached to the long and flexible core wire 11a. When the brush 11 made of 11b is wound around the mandrel 12 which is rotated in a state orthogonal to the conveyance direction of the printed wiring board, the left and right portions located at the center of the mandrel 12 are respectively The above-mentioned printed wiring boards are carried along the transport path 20 so as to be able to be tilted in the opposite direction, and the top and bottom extension lines of the respective core wires 11a can be crossed by each other and supported by the support device 30 in the machine. Before the front end is located directly below the cleaning brush 10, the cleaning brush 10 is disposed at a position higher than the thickness of the printed wiring board by the support device 30, and the cleaning brush 10 is located at the front end of the printed wiring board. At the lower side, the cleaning brush 10 is pressed down onto the printed wiring board by the support device 30, so that the brush material 11b of the cleaning brush 10 comes into contact with the printed wiring board.

In other words, the cleaning machine 100 of the request item 2 cleans the printed wiring board which is transported along the transport path 20 in the apparatus by the cleaning brush 10 disposed in the direction orthogonal to the transport direction of the transport path 20 At least the surface of the cleaning brush 10 used in the cleaning machine 100 is the same as the cleaning brush 10 of the above-mentioned claim 1, and therefore detailed description thereof will be omitted below.

As shown in FIGS. 2 to 6 , the cleaning machine 100 is provided with a transport path 20 in the upper portion of the machine, and a pair of upper and lower pairs in the middle of the transport path 20 as shown in FIGS. 3 to 5 . The cleaning brush 10 is provided in two groups along the conveying direction of the conveying path 20. That is, as shown in FIG. 3, the transport path 20 is provided on both sides of the two groups, and is carried into the printed wiring board from the direction indicated by the hollow arrow in FIG. 3, and the printed wiring board is carried out from the side opposite to the arrow. Further, the printed wiring board conveyed along the transport path 20 is cleaned at least on the surface while passing between the two sets of cleaning brushes 10 provided in the middle of the transport path 20.

Here, each of the cleaning brushes 10 of the cleaning machine 100 is rotated in the opposite direction to each other, and the former group (the group on which the printed wiring board is carried in) and the latter group are rotated in opposite directions. Further, each of the cleaning brushes 10 constituting the group on the side where the printed wiring board is loaded is rotated in the direction in which the printed wiring board is sandwiched, and each of the cleaning brushes 10 constituting the latter group is printed with the printed wiring. The plate is rotated in such a manner as to sweep out toward the upstream side.

Therefore, each of the cleaning brushes 10 constituting the latter group applies a force to eject the printed wiring board that has been carried in. This is done to sweep to every corner of the printed wiring board.

Further, each of the roller shafts constituting the transport path 20 is connected to a drive mechanism including a gear or a belt at both ends thereof, and the drive mechanism is driven by one drive motor 21 shown in FIG. 5 and the like, and constitutes a transport path. Each of the roller shafts 20 or the core rods 12 of the respective cleaning brushes 10 is rotationally driven.

Two sets of cleaning brushes 10 of a pair of upper and lower ones, that is, the core rods 12 of the four cleaning brushes 10 support their respective end portions by the support device 30. In the support device 30, the upper two cleaning brushes 10 can be moved up and down with respect to the lower two cleaning brushes 10. Of course, the cleaning brushes 10 can be simply attached to the support device 30, and conversely, the cleaning brushes 10 can be easily removed from the support device 30.

In the support device 30, the cleaning brush 10 is placed on the printed wiring before the front end of the printed wiring board carried in the transport path 20 is located immediately below the cleaning brush 10 on the upper side of the rear group with respect to the transport direction. Where the thickness of the board is higher, when the front end of the printed wiring board is located directly below the cleaning brush 10 on the upper side of the rear group with respect to the transport direction, the cleaning brush 10 is pressed down onto the printed wiring board, so that the The above-described brush 11b of the cleaning brush 10 is in contact with the printed wiring board.

In other words, the support device 30 naturally holds the cleaning brushes 10 at the time of cleaning, and the cleaning brushes 10 that are the next group with respect to the transport direction can be transported to the transport path 20 for cleaning. "Pinch" of printed wiring boards. When the cleaning brush 10 is moved into the printed wiring board in a state in which the cleaning brushes 10 are in close contact with each other, the force of ejecting the printed wiring board is applied by rotating the brush 11 of each cleaning brush 10, so that the cleaning machine is 100 brings anomalies, but this hair In the cleaning machine 100 of the present invention, the printing wiring board can be smoothly carried into between the cleaning brushes 10 by the above configuration.

In the support device 30 of the embodiment of the cleaning machine 100, each of the core rods 12 of the upper two cleaning brushes 10 is placed on the table in advance, and the table is moved up and down by the upper and lower cylinders 31. At least the cleaning brush 10 on the rear side moves up and down. In the above embodiment, the lower cylinder 31 is a cylinder that uses compressed air as a drive source different from the drive motor 21, and the vertical drive receives a limit switch (not shown) from a position at which the printed wiring board is detected. The signal is taken.

Further, in the cleaning machine 100, four cleaning brushes 10 in a pair of upper and lower combinations are covered by a cover (not shown), and the cover is opened only in a duct except for the entrance and exit of the printed wiring board. That is, the dirt or dust generated in the cover is collected by the dust collecting manifold 40 provided in the lower portion of the machine via the duct, and is sent to the dust collector outside the machine and collected therefrom.

Therefore, the cleaning machine 100 of the request item 2 uses the same cleaning brush 10 as the cleaning brush 10 of the request item 1, and therefore has the following functions: (1) printing can be performed by rotating without causing damage to the printed wiring board. Cleaning on the wiring board; (2) Cleaning or transporting of the printed wiring board can be performed without delay; (3) Low cost and easy replacement work.

As described above, the present invention has the following features: "A cleaning brush 10 for a printed wiring board, which is a long and flexible core. 11a, the brush 11 in which the plurality of brush materials 11b for cleaning the printed wiring board are cleaned at the front end is wound around the core rod 12 which is rotated in a state orthogonal to the conveyance direction of the printed wiring board, and is placed on the core The brush 11 on the right and left sides of the center of the rod 12 is wound in a state of being inclined at opposite intervals in the opposite direction, and the extension lines of the left and right core wires 11a can be crossed each other"; and "A cleaning for a printed wiring board" The machine 100 is cleaned by at least the surface of the printed wiring board conveyed on the transport path 20 in the machine by the cleaning brush 10 that is orthogonal to the transport direction of the transport path 20, and will be long. The flexible core wire 11a is attached with a plurality of brush materials 11b for cleaning the printed wiring board at the front end, and the brush 11 is wound around the core rod 12 which is rotated in a state orthogonal to the conveyance direction of the printed wiring board. By tilting the left and right portions located at the center of the mandrel 12 at equal intervals in opposite directions, the overhead extension lines of the left and right core wires 11a can be crossed each other, and can be supported by the machine in the machine. 30. The cleaning brush 10 is supported, and the cleaning brush 10 is disposed on the printed wiring board by the support device 30 before the front end of the printed wiring board carried in the transport path 20 is directly below the cleaning brush 10. When the front end of the printed wiring board is located directly below the cleaning brush 10, the cleaning brush 10 is pressed down onto the printed wiring board by the support device 30, so that the cleaning brush 10 is brushed. 11b is in contact with the printed wiring board"; thereby, the cleaning brush 10 and the cleaning machine 100 which obtain the following effects are provided: (1) cleaning on the printed wiring board can be performed by rotating without causing damage to the printed wiring board; (2) Unnecessarily cleaning or transporting the printed wiring board; (3) Low cost and easy replacement work.

10‧‧‧ cleaning brush

11‧‧‧ brush

11a‧‧‧core

11b‧‧‧ brush materials

12‧‧‧ mandrel

13‧‧‧Installation holes

14‧‧‧Central Line

15‧‧‧Overhead extension

20‧‧‧Transfer path

21‧‧‧Drive motor

30‧‧‧Support device

31‧‧‧Up and down cylinder

40‧‧‧dust collection manifold

50‧‧‧Brusher

51‧‧‧ mandrel rotary handle

52‧‧‧Swipe feed handle

52a‧‧‧ Support shaft

53‧‧‧ brush guide

54‧‧‧Support shaft

100‧‧‧ sweeping machine

Fig. 1 shows a cleaning brush 10 of the present invention, wherein (a) is a plan view, (b) is a side view, and (c) is a partially enlarged perspective view of the brush 11 constituting the cleaning brush 10.

2 is a front view of the sweeper 100 using the cleaning brush 10.

FIG. 3 is a plan view of the sweeper 100.

4 is a right side view of the sweeper 100.

FIG. 5 is a left side view of the sweeper 100.

Fig. 6 is a partial side elevational view showing the upper right side of the cleaning machine 100 in an enlarged manner.

Fig. 7 shows a brush changer 50 for manufacturing the cleaning brush 10, (a) is a plan view, and (b) is a front view.

Fig. 8 shows the brush changer 50, (a) is a left side view, and (b) is a right side view.

Fig. 9 is a perspective view of the apparatus shown in Patent Document 1.

Fig. 10 is a plan view of the apparatus shown in Patent Document 2.

Fig. 11 is a perspective view of the polishing wheel shown in Patent Document 3.

Fig. 12 is a perspective view of the brush shown in Patent Document 4.

Fig. 13 is a perspective view of the brush device shown in Patent Document 5.

Next, an embodiment shown by the drawings of the inventions of the above-described respective claims will be described. Here, FIG. 1 shows the cleaning of the embodiment of the invention of claim 1. Brush 10, FIG. 2 to FIG. 6 show a cleaning machine 100 according to an embodiment of the invention of claim 2 of the cleaning brush 10. Further, FIGS. 7 and 8 show a brush changing machine 50 for manufacturing the cleaning brush 10, The cleaning brush 10, the cleaning machine 100, and the brush changer 50 will be described in order.

(About cleaning brush 10)

1(a) and 1(b) are a plan view and a side view showing a cleaning brush 10 of the present invention, which is wound around a mandrel 12 which is rotationally driven by a sweeper 100 to be described later. Brush 11 is the original. The winding operation of the brush 11 with respect to the mandrel 12 is performed by, for example, the brush changer 50 shown in Figs. 7 and 8.

The brush 11 is partially shown in Fig. 1(c), and is formed by attaching a brush 11b as a thin wire to a flexible core wire 11a, and the core wire 11a is centered. Former. Of course, the brush material 11b constituting the brush 11 has flexibility to the extent that it does not damage the printed wiring board even if it is in contact with the surface of the printed wiring board in a state of being rotated. Further, the brush 11 may be formed by, for example, the methods proposed in Patent Document 4 and FIG.

In the cleaning brush 10 of the present embodiment, the long brush 11 as described above is wound around the core rod 12 with the center line 14 as a center, and the winding system can be performed even if the cleaning brush 10 is one. "蜿蜒 prevention" of printed wiring boards. Therefore, the respective brushes 11 located on the left and right of the center line 14 of the mandrel 12 shown in Fig. 1(a) change the winding method in the following manner.

First, the brush 11 located on the right side of Fig. 1(a) has its right end portion fixed to the attachment hole 13 formed at the right end of the mandrel 12, and is wound in a state where it is inclined at substantially equal intervals in the left direction of the drawing. Further, the brush 11 located on the left side of Fig. 1(a) has its left end portion fixed to the attachment hole 13 formed at the left end of the mandrel 12, and is wound in a state where it is inclined at substantially equal intervals in the right direction of the drawing.

By winding each of the left and right brushes 11 in the above-described manner, the left and right brushes 11 are such that the plan view extension lines 15 of the respective core wires 11a cross each other in the lower portion of the figure shown in Fig. 1(a). By. In other words, the plan portions of the respective brushes 11 located on the left and right of the center line 14 intersect each other so as to form a "V" as shown in Fig. 1(a).

When the cleaning brush 10 is orthogonal to the transport direction of the printed wiring board (the direction of the center line 14 shown in FIG. 1(a)), the cleaning brush 10 is extended in the plan view of the left and right core wires 11a. When the wires 15 are rotated in the direction in which they intersect each other (the downward direction in the drawing in Fig. 1(a)), the brush 11 located on the right side of Fig. 1(a) appears to move in the left direction of the plan view, and conversely, in Fig. 1(a) The brush 11 on the left side appears to move in the right direction of the plan view. In other words, when the cleaning brush 10 is rotated to contact the transported wiring board, the cleaning brush 10 applies a force to the printed wiring board toward the center line 14 of the printed wiring board.

Here, if the printed wiring board is shifted to the left side from the center line 14 shown in FIG. 1(a), the brush 11 located on the left side of the center line 14 of the cleaning brush 10 is more in contact with the right side. The force in the right direction generated by the left portion of the brush 11 is greater. On the other hand, if the printed wiring board is offset from the center line 14 to the right side, the brush 11 located on the right side of the center line 14 of the cleaning brush 10 is more in contact with the left side, and thus the right side portion of the brush 11 The force in the left direction is greater. As a result of the above, the center of the printed wiring board is always close to the center line 14 side of the cleaning brush 10, thereby preventing the printed wiring board from being defective.

Further, when the brush 11 shown in Fig. 1(c) is wound around the mandrel 12, as shown in Fig. 1(b), the core wire 11a constituting the brush 11 is floated on the mandrel 12 by the brush 11b. The state is elastically supported on the mandrel 12 by the elasticity of the brush 11b. Further, the surface of the cleaning brush 10 is covered by the respective brush members 11b wound around the brush 11 of the mandrel 12.

(About the cleaning machine 100 using the cleaning brush 10)

2 to 6 show a cleaning machine 100 for cleaning a printed wiring board using four cleaning brushes 10 shown in Fig. 1. In particular, as shown in FIG. 6, the cleaning machine 100 uses four pairs of cleaning brushes 10 which are a pair of upper and lower sets, and the four cleaning brushes 10 are disposed on the same as shown in FIG. 2 to FIG. The center of the upper portion of the cleaning machine 100, and before and after the cleaning brush 10, a transport path 20 for loading and unloading the printed wiring board is formed. The transport path 20 is driven by transmitting a driving force from one of the drive motors 21 shown in FIG. 5 via a gear mechanism or a conveyor, and the transport surface thereof is horizontal.

Here, each of the cleaning brushes 10 of the cleaning machine 100 is rotated in the opposite direction to each other, and the former group (the group on which the printed wiring board is carried in) and the latter group are rotated in opposite directions. Further, each of the cleaning brushes 10 constituting the group on the side where the printed wiring board is carried is rotated in the direction in which the printed wiring board is sandwiched, and each of the cleaning brushes 10 constituting the latter group is brought to the upstream side by the loaded printed wiring board. Sweep out in a way.

Further, as shown in FIGS. 4 and 5, the four cleaning brushes 10 are rotatably supported by the support device 30 to support both end portions of the mandrels 12, and the rotation is performed by the above-described drive motor 21 Conveyor belt mechanism. In the cleaning machine 100 of the present embodiment, the two cleaning brushes 10 arranged horizontally on the upper side are vertically moved by the upper and lower cylinders 31 constituting the support device 30.

In particular, the cleaning brush 10 constituting the upper side of the latter group is moved up and down by the upper and lower cylinders 31 in the following manner. In other words, before the front end of the printed wiring board carried in the transport path 20 is located directly below the cleaning brush 10, the cleaning brush 10 is disposed on the printed wiring board by the upper and lower cylinders 31 of the support device 30. A higher thickness position. Moreover, when the front end of the printed wiring board is located directly below the cleaning brush 10, the lower cylinder is supported by the support device 30. 31, the cleaning brush 10 constituting the upper side of the latter group is pressed down onto the printed wiring board so that the brush material 11b contacts the printed wiring board.

Further, the support device 30 of the cleaning machine 100 moves the table on which the core rods 12 of the upper two cleaning brushes 10 are provided up and down by the upper and lower cylinders 31, thereby moving the upper two cleaning brushes 10 up and down. In the above embodiment, the lower cylinder 31 is a cylinder that uses compressed air as a drive source, unlike the drive motor 21, and the vertical drive receives a signal from a limit switch (not shown) that detects the position of the printed wiring board.

Further, in the cleaning machine 100, each of the cleaning brushes 10 is covered by a cover (not shown), and the cover is only opened to the catheter except for the entrance and exit of the printed wiring board. That is, the dirt or dust generated in the cover is collected through the duct through the dust collecting manifold 40 provided in the lower portion of the machine.

(About the cleaning brush 10 for the cleaning brush 10)

When the brush 11 is wound around the cleaning brush 10 or when the brush 11 is attached to the cleaning brush 10, the brush changing machine 50 shown in Figs. 7 and 8 is used. The brush changer 50 has a mandrel swivel handle 51 for rotating the mandrel 12 of the cleaning brush 10, and a support shaft 52a which is disposed in parallel with the mandrel 12 and which is wound around the optimum brush 11, and is rotated by a mandrel. The handle 51 is moved to rotate the mandrel 12 to the right or to the left, whereby the brush 11 is wound around the mandrel 12. Further, when the support shaft 52a exerts an excessive force on the pulling of the brush 11, it is rotated by the brush feed handle 52 provided at the end thereof.

Further, the brush 11 as a material wound around the support shaft 52a is guided by the brush guide 53 before being wound around the mandrel 12. The brush guide 53 is coupled to a support shaft 54 that rotates in synchronization with a mandrel rotating handle 51 that rotates the mandrel 12 of the cleaning brush 10, which is based on a mandrel. The rotation amount of the handle 51 is rotated to change the supply position of the brush 11 to move.

The angle of inclination of the guide adjusting blade 11 of the brush 11 with respect to the mandrel 12 by the brush guide 53 is used to cause the brushes 11 located at the center of the mandrel 12 to be opposite to each other at equal intervals. Tilted state winder.

Further, it is also considered that the mandrel 12 or the support shaft 52a is rotated by a mechanical force such as an electric motor, and since the brush 11 itself is very soft, if an excessive force is applied, the deformation or the inclination angle is abnormal. Therefore, each mandrel is used to rotate the handle 51 and the brush feed handle 52.

10‧‧‧ cleaning brush

11‧‧‧ brush

11a‧‧‧core

11b‧‧‧ brush materials

12‧‧‧ mandrel

13‧‧‧Installation holes

14‧‧‧Central Line

15‧‧‧Overhead extension

Claims (2)

A cleaning brush for a printed wiring board, which is obtained by winding a plurality of brush materials having a front end cleaning printed wiring board on a long and flexible core wire to be transported with respect to the printed wiring board A mandrel that rotates in a state in which the directions are orthogonal to each other, wherein the left and right sides of the core rod are wound at equal intervals in opposite directions, and the left and right sides can be made The overhead extension lines of the respective core wires cross each other. A cleaning device for a printed wiring board, wherein at least a surface of a printed wiring board that is transported on a transport path in a machine is cleaned by a cleaning brush that is orthogonal to a transport direction of the transport path and that rotates. It is characterized in that a brush having a plurality of brush materials on which a front end cleaning printed wiring board is attached to a long and flexible core wire is wound and rotated in a state orthogonal to a conveying direction of the printed wiring board. In the case of the mandrel, the left and right portions located at the center of the mandrel are inclined at equal intervals in opposite directions, so that the top and bottom extension lines of the respective left and right core wires can cross each other and can be moved up and down by the machine. The support device supports the cleaning brush, and the cleaning brush is disposed on the printed wiring board by the support device before the front end of the printed wiring board that is carried in the transport path is located directly below the cleaning brush a position having a higher thickness, when the front end of the printed wiring board is located directly under the cleaning brush, the cleaning brush is pressed down by the support device to Said printed wiring board, so that said brush member of the cleaning brush in contact with the printed wiring board.