WO2021201441A1

WO2021201441A1 - Device and method for eliminating foreign substance on substrate

Info

Publication number: WO2021201441A1
Application number: PCT/KR2021/002466
Authority: WO
Inventors: 장종수; 박창성; 김경선; 구의서; 임병현
Original assignee: 스템코 주식회사; 노벨이엔씨 (주)
Priority date: 2020-03-31
Filing date: 2021-02-26
Publication date: 2021-10-07
Also published as: TW202139803A; KR20210121828A

Abstract

Provided are a device and method for eliminating a foreign substance on a substrate, wherein a rotating roll brush is brought into direct contact with a circuit board to eliminate a foreign substance on the circuit board. The device for eliminating a foreign substance on a substrate comprises: a body part including a first rail formed in a first direction on a support and a second rail formed in a second direction on the support; a substrate moving part disposed on the second rail to move a substrate; and a brushing part disposed on the first rail and including a housing having a through-hole formed therethrough and a roll brush installed in the inner space of the housing, wherein the roll brush of the brushing part comes into contact with the substrate through the through-hole to eliminate the foreign substance from the substrate.

Description

Apparatus and method for removing foreign substances from the substrate

The present invention relates to an apparatus and method for removing foreign substances on a substrate. More particularly, it relates to an apparatus and method for removing foreign matter on a printed circuit board.

A circuit board is manufactured by sequentially passing through a surface treatment, circuit formation, a printing process, an inspection process, and the like. In this case, in the inspection process, a visual inspection, an optical inspection, an electrical inspection, etc. may be sequentially performed to prevent leakage of defects of the circuit board.

Foreign substances adhering to the circuit board, such as particles, are one of the defect factors detected in the inspection process. Conventionally, in order to remove the foreign material from the circuit board, a method of sucking the foreign material by an air suction method with respect to the flowing circuit board is adopted.

However, in the case of a foreign material located in an area with high adhesion to the printed resist or a small suction effect, it is difficult to remove the foreign material by the air section method. followed

An object of the present invention is to provide an apparatus and method for removing foreign substances from a substrate by directly contacting a rotating roll brush with a circuit board to remove foreign substances from the circuit board.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

One surface (aspect) of the apparatus for removing foreign substances from the substrate of the present invention for achieving the above object is a body including a first rail formed on a support in a first direction and a second rail formed on the support in a second direction wealth; a substrate flow unit disposed on the second rail and configured to flow a substrate; and a brushing part disposed on the first rail and including a housing having a through hole and a roll brush mounted in the inner space of the housing, wherein the roll brush of the brushing part is in contact with the substrate through the through hole. Remove foreign substances from the substrate. Specifically, the roll brush rotates when the substrate comes into contact with the roll brush through the through hole to remove foreign substances from the substrate.

The apparatus for removing foreign substances from the substrate may further include a suction unit connected to the housing and for sucking and discharging the foreign substances remaining in the inner space of the housing.

The housing may include a detachable first module and a second module, and the first module and the second module may move in different directions along the first rail to expose the brushing unit.

The roll brush may rotate in a direction different from the moving direction of the substrate.

The brushing unit further includes a first roll shaft for rotating the roll brush, the roll brush may include: a shaft tube coupled to the first roll shaft through a hollow; and a brush attached to the surface of the shaft tube.

The length of the roll brush may be equal to or shorter than the length of the first roll shaft.

The apparatus for removing foreign substances from the substrate may further include a roll brush cleaning unit installed on the inner surface of the housing and configured to remove the foreign substances from the roll brush.

The roll brush cleaning unit may be formed in at least one of a wire shape, a plate shape, and a knife shape.

The substrate moving unit may include: a driving roller for moving the substrate; a second roll shaft rotating the driving roller; and a limit stopper installed on a side surface of the second roll shaft to prevent collision of the brushing part and the substrate moving part.

The apparatus for removing foreign substances from the substrate may further include a displacement adjusting unit configured to move at least one of the brushing unit and the substrate moving unit along the second rail when the substrate does not contact the roll brush.

The first rail may intersect the second rail.

One aspect of the method for removing foreign matter from the substrate of the present invention for achieving the above object includes the steps of: coupling the separated housing to move along the first rail to cover the roll brush; contacting the substrate with the roll brush through a through hole formed in a side surface of the housing by moving a substrate moving part for moving the substrate along a second rail; and rotating the roll brush to remove foreign substances from the substrate.

After removing the foreign material from the substrate, the method may further include removing the foreign material from the roll brush by a roll brush cleaning unit installed on the inner surface of the housing when the roll brush rotates.

The method may further include, after removing the foreign material from the roll brush, the suction unit connected to the housing sucking the foreign material remaining in the inner space of the housing and discharging the foreign material to the outside.

In the removing of the foreign material from the substrate, the roll brush may be rotated in a direction different from the moving direction of the substrate.

In the contacting, the movement of the substrate moving unit may be stopped by detecting whether the substrate moving unit collides with the housing.

The contacting may include moving at least one of the housing and the substrate moving part along the second rail when the substrate does not come into contact with the roll brush.

The details of other embodiments are included in the detailed description and drawings.

In the present invention, the following effects can be obtained by removing foreign substances from the circuit board by bringing the rotating roll brush into direct contact with the circuit board.

First, foreign substances can be removed from the entire area of the circuit board in the process of transferring the circuit board, and the process can be simplified.

Second, it is possible to easily remove foreign substances having high adhesion to the resist formed on the circuit board, thereby improving the productivity of the product.

Third, it is possible to maximize the effect of removing foreign substances by preventing the removed foreign substances from being re-attached on the circuit board.

1 is a perspective view of an apparatus for removing foreign substances from a substrate according to an embodiment of the present invention.

2 is a front view of an apparatus for removing foreign substances from a substrate according to an embodiment of the present invention.

3 is a rear view of an apparatus for removing foreign substances from a substrate according to an embodiment of the present invention.

4 is a perspective view illustrating an internal structure of a body part constituting an apparatus for removing foreign substances from a substrate according to an embodiment of the present invention.

5 is an exploded perspective view showing an internal structure of a roll brush unit constituting an apparatus for removing foreign substances from a substrate according to an embodiment of the present invention.

FIG. 6 is a first exemplary view for explaining an operating principle of a housing constituting the roll brush unit of FIG. 5 .

FIG. 7 is a second exemplary view for explaining an operating principle of a housing constituting the roll brush unit of FIG. 5 .

FIG. 8 is a first exemplary view for explaining a method of operating a roll brush constituting the roll brush unit of FIG. 5 .

FIG. 9 is a second exemplary view for explaining an operation method of the roll brush constituting the roll brush unit of FIG. 5 .

FIG. 10 is an exemplary view for explaining the length relationship between the first roll shaft and the roll brush constituting the roll brush unit of FIG. 5 .

11 is an exploded perspective view illustrating an internal structure of a substrate moving part constituting an apparatus for removing foreign substances from a substrate according to an embodiment of the present invention.

FIG. 12 is a first exemplary view for explaining the principle of operation of the second roll shaft constituting the substrate flow part of FIG. 11 .

13 is a second exemplary view for explaining the principle of operation of the second roll shaft constituting the substrate flow unit of FIG. 11 .

14 is a perspective view of an apparatus for removing foreign substances from a substrate according to another embodiment of the present invention.

15 is a flowchart sequentially illustrating a method of removing foreign substances from a substrate according to an embodiment of the present invention.

FIG. 16 is a first exemplary diagram for explaining each step in the method of FIG. 15 .

FIG. 17 is a second exemplary diagram for explaining each step in the method of FIG. 15 .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments published below, but can be implemented in various different forms, and only these embodiments make the publication of the present invention complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Reference to an element or layer “on” or “on” another element or layer includes not only directly on the other element or layer, but also with intervening other layers or other elements. include all On the other hand, reference to an element "directly on" or "immediately on" indicates that no intervening element or layer is interposed.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe a correlation between an element or components and other elements or components. Spatially relative terms should be understood as terms including different orientations of the device during use or operation in addition to the orientation shown in the drawings. For example, if an element shown in the figures is turned over, an element described as "beneath" or "beneath" another element may be placed "above" the other element. Accordingly, the exemplary term “below” may include both directions below and above. The device may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

It should be understood that although first, second, etc. are used to describe various elements, components, and/or sections, these elements, components, and/or sections are not limited by these terms. These terms are only used to distinguish one element, component, or sections from another. Accordingly, it goes without saying that the first element, the first element, or the first section mentioned below may be the second element, the second element, or the second section within the spirit of the present invention.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises" and/or "comprising" refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components, regardless of reference numerals, are given the same reference numbers and overlapped therewith. A description will be omitted.

1 is a perspective view of an apparatus for removing foreign substances from a substrate according to an embodiment of the present invention, FIG. 2 is a front view of an apparatus for removing foreign substances from a substrate according to an embodiment of the present invention, and FIG. It is a rear view of an apparatus for removing foreign substances from a substrate according to an embodiment.

1 to 3 , the apparatus 100 for removing foreign substances from a substrate may include a body part 110 , a brushing part 120 , a suction part 130 , and a substrate flow part 140 .

The apparatus 100 for removing foreign substances from a substrate removes foreign substances (eg, particles) on the circuit board W (eg, printed circuit board). The apparatus 100 for removing foreign substances from the substrate may remove foreign substances from the circuit board W that flows in order to perform an inspection process.

In the following description, it will be described that the foreign matter is removed on the circuit board W when the circuit board W is in a flowing state, but this is one embodiment, and in this embodiment, the circuit board W is stopped for a unit time It is also possible to remove foreign substances on the circuit board W when in one state.

The apparatus 100 for removing foreign substances from a substrate may be formed in an integrated structure with a roll brush and a suction to remove foreign substances from the circuit board W. Referring to FIG.

The apparatus 100 for removing foreign substances from the substrate may remove the foreign substances from the circuit board W by directly contacting a rotating roll brush with the circuit board W. Referring to FIG. The roll brush may be provided in the brushing unit 120 .

Also, the apparatus 100 for removing foreign substances from the substrate may suction and remove the foreign substances separated from the circuit board W by using air suction. The air suction may be performed by the suction unit 130 , and in this embodiment, it is possible to immediately suck the detached foreign material, thereby suppressing re-attachment of the detached foreign material to another area of the circuit board W.

The body part 110 constitutes the body of the apparatus 100 for removing foreign substances from the substrate. The brushing unit 120 , the suction unit 130 , and the substrate flow unit 140 may be installed on the body unit 110 .

The body part 110 may include a support 210 , a first rail 220 , and a second rail 230 as shown in FIG. 4 . 4 is a perspective view illustrating an internal structure of a body part constituting an apparatus for removing foreign substances from a substrate according to an embodiment of the present invention. The following description refers to FIG. 4 .

The support 210 is a flat plate having a certain area. The first rail 220 and the second rail 230 may be installed on the support 210 .

The first rail 220 is for moving the brushing unit 120 on the support 210 . The first rail 220 may be installed on the support 210 with the first direction 10 as the longitudinal direction.

The second rail 230 is for moving the substrate moving part 140 on the support 210 . The second rail 230 may be installed on the support 210 with the second direction 20 as the longitudinal direction.

The first rail 220 and the second rail 230 may be installed to cross each other on the support 210 . However, the present embodiment is not limited thereto. The first rail 220 and the second rail 230 may be installed parallel to each other on the support 210 . The first rail 220 and the second rail 230 may be installed in parallel with a predetermined distance on the support 210 with the first direction 10 as the longitudinal direction.

The first rail 220 and the second rail 230 may be installed on the support 210 to have the same shape. However, the present embodiment is not limited thereto. The first rail 220 and the second rail 230 may be installed on the support 210 to have different shapes. For example, in FIG. 3, the first rail 220 and the second rail 230 are formed in a linear shape, but at least one of the first rail 220 and the second rail 230 is installed at an installation location, It may be formed in a curved shape in consideration of a brush type, a distance relationship between the brushing unit 120 and the substrate flow unit 140 .

It will be described again with reference to FIG. 1 .

The brushing unit 120 is for removing foreign substances from the circuit board (W). The brushing unit 120 may remove foreign substances from the circuit board W by directly contacting the rotating roll brush with the circuit board W.

As shown in FIG. 5 , the brushing unit 120 may include a housing 310 , a first roll shaft 320 , and a roll brush 330 . 5 is an exploded perspective view showing an internal structure of a roll brush unit constituting an apparatus for removing foreign substances from a substrate according to an embodiment of the present invention. The following description refers to FIG. 5 .

The housing 310 moves in the first direction 10 along the first rail 220 on the support 210 . The housing 310 may have a space formed therein so that the roll brush 330 can be mounted therein.

The housing 310 may be divided into a plurality of modules to expose the roll brush 330 mounted in the space therein. The housing 310 may be separated into two

modules

311 and 312 that move to both sides, and the roll brush 330 mounted therein may be exposed to the outside, for example.

The housing 310 can be opened and closed inside. For example, as shown in FIG. 6 , the first module 311 moves in a negative (-) first direction 10 along the first rail 220, and the second module 312 moves the first When moving in the positive (+) first direction 10 along the rail 220, the inside of the housing 310 may be opened. When the inside of the housing 310 is opened in this way, the apparatus 100 for removing foreign substances from the substrate is stopped, and the roll brush 330 is detached from the first roll shaft 320 to clean or replace the roll brush 330 . it becomes possible to FIG. 6 is a first exemplary view for explaining an operating principle of a housing constituting the roll brush unit of FIG. 5 .

In addition, as shown in FIG. 7 , the first module 311 moves in a positive (+) first direction 10 along the first rail 220, and the second module 312 moves on the first rail ( When the housing 310 moves in the negative (-) first direction 10 along the 220 , the inside of the housing 310 may be sealed. When the inside of the housing 310 is sealed in this way, the apparatus 100 for removing foreign substances from the substrate starts to operate, and it becomes possible to remove foreign substances from the circuit board W. FIG. 7 is a second exemplary view for explaining an operating principle of a housing constituting the roll brush unit of FIG. 5 .

Meanwhile, the housing 310 may move in the second direction 20 along the second rail 230 on the support 210 . When the inside of the housing 310 is sealed, the housing 310 may move in the second direction 20 along the second rail 230 at the intersection of the first rail 220 and the second rail 230 . The housing 310 may move in the second direction 20 along the second rail 230 to bring the roll brush 330 into contact with the circuit board W.

As another embodiment, the housing 310 may open or seal the inside of the housing 310 by moving one module in the third direction 30 to be perpendicular to the first direction 10 or the second direction 20 .

It will be described again with reference to FIG. 5 .

The housing 310 may include at least one through hole 313 having a predetermined size on a side thereof. The roll brush 330 mounted in the housing 310 comes into contact with the circuit board W that enters the housing 310 through the through hole 313 or moves along the side surface of the housing 310 . Thus, foreign substances can be separated from the circuit board W.

The first roll shaft 320 rotates the roll brush 330 . The first roll shaft 320 may be connected to a motor (not shown) for applying a rotational force to rotate the roll brush 330 . The roll brush 330 may be coupled to the first roll shaft 320 and mounted in the inner space of the housing 310 .

The first roll shaft 320 may be installed on the first rail 220 . The first roll shaft 320 may be movably installed on the first rail 220 together with the housing 310 . However, the present embodiment is not limited thereto. The first roll shaft 320 may be fixedly installed on the first rail 220 .

On the other hand, the first roll shaft 320 is any one of the rails of the first rail 220 and the second rail 230 (eg, the intersection of the first rail 220 and the second rail 230 ) It may be installed on the first rail 220 as well as on the second rail 230 to be movably installed. The first roll shaft 320 may be installed movably only on the second rail 230 .

The roll brush 330 is in contact with the circuit board (W) to release foreign substances on the circuit board (W). The roll brush 330 may be rotated by the first roll shaft 320 when in contact with the circuit board W to remove foreign substances from the circuit board W.

The roll brush 330 may include a shaft tube 331 and a brush 332 . At this time, the brush 332 attached to the surface of the shaft tube 331 may come into contact with the circuit board W, and may separate foreign substances from the circuit board W without damaging the circuit board W.

The shaft tube 331 is bound to the first roll shaft 320 . The shaft tube 331 has a hollow, and may be coupled to the first roll shaft 320 through the hollow to be bound to the first roll shaft 320 .

The shaft pipe 331 may be fastened to the first roll shaft 320 in various ways, such as pin fastening, bolt fastening, and interference fitting. The shaft tube 331 may be formed in a cylindrical shape, but the shape of the shaft tube 331 in the present embodiment is not limited thereto.

Of course, the brush 332 may be attached to the surface of the first roll shaft 320 by acting as the shaft tube 331 by the first roll shaft 320 alone.

A plurality of brushes 332 may be formed on the surface of the shaft tube 331 . The brush 332 may be formed using wool having a smooth surface as a material. The brush 332 may be formed using, for example, artificial hair (non-static nylon hair) as a material. Meanwhile, the brush 332 may be formed to have a constant thickness (eg, 80 μm).

The roll brush 330 may rotate in the same direction as the circuit board W as shown in FIG. 8 when the roll brush 330 comes into contact with the circuit board W to separate foreign substances from the circuit board W. As shown in FIG. FIG. 8 is a first exemplary view for explaining a method of operating a roll brush constituting the roll brush unit of FIG. 5 .

However, the present embodiment is not limited thereto. The roll brush 330 may rotate in different directions from the circuit board W as shown in FIG. 9 . The roll brush 330 rotates in a different direction from the circuit board W as described above, thereby improving the effect of removing foreign substances compared to the case of rotating in the same direction as the circuit board W. FIG. 9 is a second exemplary view for explaining an operation method of the roll brush constituting the roll brush unit of FIG. 5 .

As shown in FIG. 10 , the roll brush 330 may be formed to have a shorter length than the first roll shaft 320 (length (a) of the roll brush 330 < of the first roll shaft 320 ). length (b)). When the roll brush 330 is formed in this way, it can rotate while being spaced apart from the bottom surface of the first roll shaft 320 by a predetermined distance, and accordingly, the bottom surface of the roll brush 330 and the first roll shaft 320 . inter-contact can be avoided. FIG. 10 is an exemplary view for explaining the length relationship between the first roll shaft and the roll brush constituting the roll brush unit of FIG. 5 .

However, the present embodiment is not limited thereto. The roll brush 330 may be formed to have the same length as the first roll shaft 320 , or may be formed to have a longer length than the first roll shaft 320 .

It will be described again with reference to FIG. 5 .

The brushing unit 120 may further include a roll brush washing unit 340 . The roll brush cleaning unit 340 may be installed on the inner surface of the housing 310 .

The roll brush cleaning unit 340 functions to separate foreign substances attached to the roll brush 330 from the roll brush 330 after being separated from the circuit board W. In the present embodiment, the roll brush 330 can be maintained in a clean state through the roll brush cleaning unit 340 .

The roll brush cleaning unit 340 may be installed on the inner surface of the housing 310 in a wire shape as shown in FIG. 5 . However, the present embodiment is not limited thereto. The roll brush cleaning unit 340 may be installed on the inner surface of the housing 310 in a plate shape or a knife shape.

A plurality of roll brush cleaning units 340 may be installed at regular intervals on the inner surface of the housing 310 . However, the present embodiment is not limited thereto. A single roll brush cleaning unit 340 may be installed on the inner surface of the housing 310 .

It will be described again with reference to FIG. 1 .

The suction unit 130 sucks the foreign material remaining in the brushing unit 120 and discharges it to the outside. To this end, the suction unit 130 may be coupled to the housing 310 through a through hole formed in a side surface of the housing 310 .

Accordingly, in the present embodiment, the brush 332 is provided through the housing 310 partially opened by the through hole 313 , and the foreign material separated by the brush 332 is removed from the suction part inside the housing 310 . Since it is immediately sucked into the 130 , it is possible to prevent the problem that the detached foreign substances are released to the outside of the housing 310 and reattached to other areas of the circuit board W or scattered in the workplace. In particular, when the suction direction of the suction unit 130 is formed in a direction perpendicular to the through hole 313 , the suction effect may be further improved.

The substrate flow unit 140 is to flow the circuit board (W). The substrate flow unit 140 is installed on the second rail 230 , and may allow the circuit board W to flow in the first direction 10 .

The substrate flow unit 140 may include a second roll shaft 410 and a driving roller 420 as shown in FIG. 11 . 11 is an exploded perspective view illustrating an internal structure of a substrate moving part constituting an apparatus for removing foreign substances from a substrate according to an embodiment of the present invention. The following description refers to FIG. 11 .

The second roll shaft 410 is installed on the second rail 230 . The second roll shaft 410 may be connected to a motor (not shown) for applying a rotational force to rotate the driving roller 420 . In the present embodiment, the second roll shaft 410 and the driving roller 420 are bound, so that the driving roller 420 also rotates according to the rotation of the second roll shaft 410 , and the rotation of the driving roller 420 . Accordingly, the circuit board W may flow in the first direction 10 .

The second roll shaft 410 may be movably installed on the second rail 230 . However, the present embodiment is not limited thereto. The second roll shaft 410 may be fixedly installed on the second rail 230 .

The second roll shaft 410 is directed toward the brushing unit 120 along the second rail 230 as shown in FIG. 12 (ie, negative It can move in the (-) second direction (20)). In this case, the circuit board W is in close contact with the roll brush 330 of the brushing unit 120 , and foreign substances adhering to the circuit board W may be removed by the roll brush 330 . FIG. 12 is a first exemplary view for explaining the principle of operation of the second roll shaft constituting the substrate flow part of FIG. 11 .

In addition, the second roll shaft 410 moves away from the brushing unit 120 along the second rail 230 as shown in FIG. 13 when the foreign material removal apparatus 100 of the substrate is stopped (that is, It can move in a positive (+) second direction (20)). In this case, the flow of the circuit board W may also be stopped. 13 is a second exemplary view for explaining the principle of operation of the second roll shaft constituting the substrate flow unit of FIG. 11 .

It will be described again with reference to FIG. 11 .

The driving roller 420 is rotated by the second roll shaft 410 . The driving roller 420 has a hollow, and may be fastened to the second roll shaft 410 through the hollow. The driving roller 420 may be fastened to the second roll shaft 410 in the same manner as in the case of the shaft pipe 331 , and is fastened to the second roll shaft 410 in a different manner than in the case of the shaft pipe 331 . It is also possible to be

On the other hand, when the substrate moving unit 140 approaches the brushing unit 120 to remove foreign substances from the circuit board W, a collision may occur between the brushing unit 120 and the substrate moving unit 140 . In this embodiment, in order to prevent a collision between the brushing unit 120 and the substrate flow unit 140 , a limit stopper 430 may be provided on the side surface of the second roll shaft 410 . When the second roll shaft 410 moves in the direction in which the brushing unit 120 is located, the limit stopper 430 detects whether the brushing unit 120 and the second roll shaft 410 collide with the second roll shaft ( 410) to stop the continuous movement.

The limit stopper 430 may be formed in a protruding shape as shown in FIG. 11 , and may be formed in a shape inclined toward the lower surface of the second roll shaft 410 . However, the present embodiment is not limited thereto, and may be formed in any shape as long as it can prevent collision with the brushing unit 120 .

Meanwhile, the apparatus 100 for removing foreign substances from the substrate may further include a displacement adjusting unit 150 as shown in FIG. 14 . 14 is a perspective view of an apparatus for removing foreign substances from a substrate according to another embodiment of the present invention. The following description refers to FIG. 14 .

The brush 332 is to separate foreign substances attached to the circuit board W from the circuit board W. However, the brush 332 may be worn over a long period of use. In this case, a separation distance may occur between the roll brush 330 and the circuit board W, and a problem may occur that foreign substances adhering to the circuit board W cannot be removed. The displacement adjusting unit 150 may function to adjust the displacement of the roll brush 330 in order to solve such a problem. The displacement adjusting unit 150 may adjust the displacement of the roll brush 330 from a unit of μm to a unit of cm.

When the separation distance between the roll brush 330 and the circuit board W is measured, the displacement adjusting unit 150 may move the brushing unit 120 in the direction in which the substrate moving unit 140 is located. That is, the displacement adjusting unit 150 moves the brushing unit 120 along the second rail 230 in the positive second direction 20 so that the roll brush 330 comes into contact with the circuit board W. can make it happen

However, the present embodiment is not limited thereto. The displacement adjusting unit 150 may also move the substrate moving unit 140 in the direction in which the brushing unit 120 is located. That is, the displacement control unit 150 moves the substrate flow unit 140 along the second rail 230 in the negative second direction 20 so that the roll brush 330 is applied to the circuit board W. It can also be brought into contact.

Meanwhile, the separation distance between the roll brush 330 and the circuit board W may be measured using a micrometer. In the present embodiment, it is also possible to estimate the separation distance between the roll brush 330 and the circuit board W based on the difference between the previous length and the current length of the brush 332 .

The apparatus 100 for removing foreign matter from a substrate has been described with reference to FIGS. 1 to 14 above. The apparatus 100 for removing foreign substances from the substrate enables the removal of metal foreign substances present on the surface of the circuit board W, and may be applied to a reel to reel facility.

Hereinafter, a method for the apparatus 100 to remove foreign substances from the circuit board W will be described.

15 is a flowchart sequentially illustrating a method of removing foreign substances from a substrate according to an embodiment of the present invention. The following description refers to FIG. 15 .

When the foreign material removal apparatus 100 of the substrate is in a non-operational state, the brushing unit 120 and the substrate moving unit 140 are spaced apart as shown in FIG. 16 . In the case of the brushing unit 120 , the inside thereof is opened to expose the roll brush 330 to the outside. FIG. 16 is a first exemplary diagram for explaining each step in the method of FIG. 15 .

On the other hand, when the foreign material removal apparatus 100 of the substrate is in a non-operational state, the substrate flow unit 140 may not operate either. In this case, the circuit board W may not flow in the first direction 10 and may be stopped while being wound around the driving roller 420 .

When the foreign material removal device 100 of the substrate is in an operating state (S510), the first module 311 and the second module 312 may move along the first rail 220 to cover the roll brush 330. It is coupled so that the inside of the brushing unit 120 is closed accordingly. In addition, the substrate flow unit 140 moves in the direction in which the brushing unit 120 is located along the second rail 230 to be in close contact with the brushing unit 120 as shown in FIG. 17 ( S520 ). FIG. 17 is a second exemplary diagram for explaining each step in the method of FIG. 15 .

On the other hand, when the substrate flow unit 140 is not in operation, it starts to operate, and the circuit board W flows in the first direction 10 .

When the substrate flow unit 140 is in close contact with the brushing unit 120 , the circuit board W comes into contact with the roll brush 330 through the through hole 313 . Then, while the brush 332 is rotated through the first roll shaft 320 to which the rotational force is applied by the motor (S530), foreign substances attached to the circuit board W are separated from the circuit board W and the brush (332) is attached.

Thereafter, foreign substances adhering to the brush 332 are separated from the brush 332 by the roll brush cleaning unit 340 and remain in the inner space of the housing 310 (S540), and in the inner space of the housing 310 (S540). The remaining foreign substances are discharged to the outside by the suction unit 130 (S550).

Although embodiments of the present invention have been described with reference to the above and the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can practice the present invention in other specific forms without changing its technical spirit or essential features. You will understand that there is Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

The present invention relates to an apparatus for removing metal foreign substances remaining on the surface of a circuit board, and may be applied to a reel to reel facility.

Claims

a body portion including a first rail formed on the support in a first direction and a second rail formed on the support in a second direction;

a substrate flow unit disposed on the second rail and configured to flow a substrate; and

It is disposed on the first rail and includes a housing having a through hole and a brushing unit including a roll brush mounted in the inner space of the housing,

The roll brush of the brushing unit is in contact with the substrate through the through hole to remove the foreign material from the substrate.
The method of claim 1,

The apparatus for removing foreign substances from the substrate further comprising a suction unit connected to the housing and sucking and discharging the foreign substances remaining in the inner space of the housing.
The method of claim 1,

The housing comprises a detachable first module and a second module,

The first module and the second module move in different directions along the first rail to expose the brushing unit.
The method of claim 1,

The roll brush is a device for removing foreign matter from the substrate that rotates in a direction different from the moving direction of the substrate.
The method of claim 1,

The brushing unit,

Further comprising a first roll shaft for rotating the roll brush,

The roll brush,

a shaft tube fastened to the first roll shaft through a hollow; and

A foreign material removal device for a substrate including a brush attached to the surface of the shaft tube.
6. The method of claim 5,

The length of the roll brush is equal to or shorter than the length of the first roll shaft.
The method of claim 1,

The apparatus for removing foreign substances from the substrate further comprising a roll brush cleaning unit installed on the inner surface of the housing and configured to remove the foreign substances from the roll brush.
8. The method of claim 7,

The roll brush cleaning unit is formed in at least one of a wire shape, a plate shape, and a knife shape to remove foreign matter from the substrate.
The method of claim 1,

The substrate moving part,

a driving roller for moving the substrate;

a second roll shaft rotating the driving roller; and

and a limit stopper installed on a side surface of the second roll shaft to prevent a collision between the brushing unit and the substrate moving unit.
The method of claim 1,

When the substrate does not come into contact with the roll brush, the apparatus further comprising a displacement adjusting unit for moving at least one of the brushing unit and the substrate moving unit along the second rail.
The method of claim 1,

The first rail is an apparatus for removing foreign matter from the substrate crossing the second rail.
combining the separated housing to move along the first rail to cover the roll brush;

contacting the substrate with the roll brush through a through hole formed in a side surface of the housing by moving a substrate moving part for moving the substrate along a second rail; and

and rotating the roll brush to remove foreign substances from the substrate.
13. The method of claim 12,

and removing the foreign material from the roll brush by a roll brush cleaning unit installed on the inner surface of the housing when the roll brush rotates.
14. The method of claim 13,

The method of removing a foreign material from the substrate further comprising the step of sucking the foreign material remaining in the inner space of the housing by a suction unit connected to the housing and discharging to the outside.
13. The method of claim 12,

The removing may include rotating the roll brush in a direction different from the moving direction of the substrate.
13. The method of claim 12,

The contacting step is a method of removing foreign substances from the substrate by detecting whether or not there is a collision between the substrate moving unit and the housing to stop the movement of the substrate moving unit.
13. The method of claim 12,

In the contacting step, when the substrate does not contact the roll brush, at least one of the housing and the substrate moving part is moved along the second rail.