KR100378488B1 - Apparatus for aligning component for chip mounter using mirror - Google Patents

Abstract

An apparatus for aligning a component for a chip mounter using a mirror, comprising: a nozzle for adsorbing a component; It is formed at the end of the arm and the rotating means which is located at the main body of the chip mounter spaced apart from the side of the nozzle, the arm is inclined with the central axis of the nozzle and rotated by a predetermined angle with respect to the hinge point by the rotating means. A rotating mirror member having a mirror, the length of the arm being the distance from the hinge point to the center point of the rotating mirror member R, the distance from the center point of the part to the center point of the rotating mirror member D, the hinge point and the rotating mirror member A mirror rotating device set such that R, D, and φ satisfy R = 2D / (cosφ-sinφ) when an angle formed by the center point of the component and the center point of the component is φ; And a position change detector for detecting a change in position of a component reflected by the mirror.

Description

Apparatus for aligning component for chip mounter using mirror}

The present invention relates to a device for aligning components for a chip mounter using a mirror, and more particularly, to a device for aligning components for a chip mounter using a mirror in which a component recognition speed is increased by automatically compensating a position error of the mirror.

In recent years, electronic circuit boards exhibit high density and high functionality, and individual integrated circuit electronic components also have high functionality as well. The output pins mounted on the electronic circuit board increase, and as a result, the spacing between the output pins becomes narrower. In such a situation, it is required to accurately mount the electronic component on the electronic circuit board by rotating the component at the correct angle before mounting the electronic component.

Referring to FIG. 1, a component mounting apparatus for a chip mounter using a conventional mirror includes a nozzle 2 for attracting a component 1, and a mirror 3 below the central axis A of the nozzle 2. The translation mirror member 5 is installed so that the center point O is located, and the position change detector 8 which detects the change of the position of the component 1 reflected by the said mirror 3 is included.

The translation mirror member 5 is translated by a screw (7) connected to the drive motor (6).

The translation mirror member 5 is mirrored with the component 1 at the time of mounting the component 1 due to the lowering of the nozzle 2 and at the recognition of the component 1 by the position change detector 8. In order to avoid the interference of (3), the translational mirror member 5 enters under the part 1 by the translational motion only upon recognition of the part.

In the chip mounter component alignment apparatus 100 using the mirror, the translation mirror member 5 is positioned below the central axis of the nozzle 2 so that the translation mirror member 5 recognizes the component 1. In order to increase the recognition speed of the component 1, the translational mirror member 5 needs to move downward of the component 1 at high speed. When the translational mirror member 5 is moved at high speed, the mirror 3 vibrates at the component recognition position of the translational mirror member 5, so that the position of the component may not be correctly recognized.

A device for arranging components for a chip mounter using a mirror is disclosed in Korean Patent Laid-Open No. 2000-60568.

In the component mounting apparatus for chip mounters using this mirror, the component is recognized at a point bisected between the rotational center of the link portion coupled to the header and the projection means surface on which the image of the component is projected. When the rotating projection means is located at the bottom of the part, the rotational error can be minimized.

The present invention has been made in view of the above-described problems, and has a component mounting apparatus for a chip mounter using a mirror that automatically compensates for the residual vibration of the mirror and the component recognition position error of the mirror at the component recognition position of the mirror during high-speed movement of the mirror. The purpose is to provide.

1 is a partial cross-sectional view of a component for aligning device for a chip mounter using a conventional mirror;

2 is a partial perspective view of a component for arranging a chip mounter using a mirror according to an embodiment of the present invention;

3 is a partial cross-sectional view of a component for arranging a chip mounter using the mirror of FIG. 2;

4 is a configuration diagram schematically showing a path of component alignment of the component mounting apparatus for a chip mounter using the mirror of FIG. 2;

5 is a partial cross-sectional view of a component for arranging a chip mounter using a mirror according to another embodiment of the present invention;

6 is a partial cross-sectional view of a component for arranging a chip mounter using a mirror according to another embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

2, 20 ... nozzle 32 ... arm

33 ... rotating mirror member 34 ... follow cam

35 ... rotary cam 8, 50 ... position change detector

75 ... direct cam

A chip mounter component alignment device using the mirror of the present invention for achieving the above object comprises a nozzle for sucking the component; A rotation means positioned at the main body of the chip mounter spaced apart from the side of the nozzle by a predetermined distance, an arm inclined with the central axis of the nozzle, and rotated by a predetermined angle with respect to a hinge point by the rotation means; A rotation mirror member formed at an end and having a mirror, the length of the arm being a distance from the hinge point to the center point of the rotation mirror member R being the distance from the center point of the part to the center point of the rotation mirror member; When the angle between D, the hinge point, the center point of the rotating mirror member and the center point of the component is φ, the mirror rotation is set such that the values R, D and φ satisfy R = 2D / (cosφ-sinφ). An apparatus; And a position change detector for detecting a change in the position of the component reflected by the mirror.

The rotating means may include a cam follower installed on the arm, a linear cam that is in contact with the cam follower and is reciprocally supported by the main body, and a driving unit for driving the linear cam.

Hereinafter, with reference to the accompanying drawings will be described in detail the component arrangement device for a chip mounter using a mirror in accordance with a preferred embodiment of the present invention.

2 and 3, the component arrangement device 200 for a chip mounter using a mirror according to an exemplary embodiment of the present invention may include a nozzle 20 for adsorbing a component and a spaced apart from the nozzle at a predetermined interval. And a mirror rotating device 30 for rotating the mirror 13 and a position change detector 50 for detecting a change in the position of the component 1 reflected by the mirror 13.

The mirror rotating device 30 includes a rotating means 31 positioned on the side surface 9 of the main body of the chip mounter, a plate-shaped arm 32 installed to be inclined with the central axis A of the nozzle 20; And a rotating mirror member 33 installed at the end 32a of the arm orthogonal to the arm 32 and having a mirror 13.

The pivoting means 31 is in contact with the cam follower 34 provided on the upper end side of the arm 32 and in contact with the cam follower 34 and rotatably supported by one end 9a of the side of the chip mounter. The rotating cam 35, the drive unit 36 for driving the rotary cam 35, and a spring 37 for elastically supporting the rotation of the rotary mirror member 33.

The drive unit 36 is a drive motor 38 for supplying a rotational force for rotating the arm 32 at any angle about the hinge point (H) of the arm 32 and coupled to the drive motor A drive pulley 39 and a driven pulley 40 interlocking with the drive pulley, and a belt 41 for synchronizing the pulleys (39, 40).

Referring to FIG. 4, the arm 32 has a length R of the arm, which is the distance from the hinge point H to the center point O of the rotating mirror member 33, and the center point of the component 1 ( When the distance from K) to the center point O of the rotating mirror member is D, the angle between the hinge point H and the center point O of the rotating mirror member and the center point K of the component is φ. , R, D and φ values are formed to satisfy R = 2D / (cosφ-sinφ). This is a component incident on the position change detector 50 through the mirror 13 if the mirror 13 is inclined with a small angle error Δφ as shown by the dotted line in the drawing based on the hinge point H. The reflection angle Δθ for the image of is 2 times that of 2Δφ. That is, when the mirror 13 is inclined to the minute angle error Δφ, the center position error OC and the angular position error Δφ of the mirror occur. The length of the horizontal moving distance line segment OB of the mirror 13 is obtained by subtracting the length of the line segment BA from the length of the line segment OA. Accordingly, the horizontal moving distance line segment OB of the mirror 13 becomes OB = RΔφ (cosφ-sinφ) = DΔθ. Since Δθ is 2Δφ, R = 2D / (cosφ-sinφ).

Forming the mirror rotating device 30 to have such R, φ and D results in canceling the positional change of the component due to the central position error OC and the angular position error Δφ of the mirror.

The position change detector 50 includes an illumination unit 51 for irradiating light to the rotating mirror member 33. At the rear of the lighting unit 51, a lens unit 52 for focusing an image of the component by the light is formed. At the rear of the lens unit 52, a recognition camera 53 is installed to reflect an image of a part reflected from the rotating mirror member 33 and focused by the lens unit 52.

Referring to the operation of the component arrangement device for a chip mounter using a mirror according to the present invention configured as described above are as follows.

The rotating mirror member 33 is positioned below the component 1. At this time, in order to position the rotary mirror member 33 in the lower part of the component (1) power is supplied from the drive motor 38 installed on the rear of the chip mounter. Therefore, the drive pulley 39 provided on the power take-off shaft of the drive motor 38 is rotatable. In addition, the driven pulley 40 installed in the vicinity of the arm 32 is interlocked by a belt 41 connected between the drive pulley 39.

When the driven pulley 40 is rotated, the rotary cam 35 coupled to the driven pulley 40 coaxially rotates at a predetermined angle. At this time, the outer surface of the rotary cam 35 is in contact with one surface of the cam follow 34 provided on the upper end of the arm (32). Accordingly, the cam follow 34 is rotated, and the arm 32 coupled with the cam follow 34 is also rotated. Therefore, the mirror rotating member 33 can be located at the bottom of the component. At this time, a spring 37, which is an elastic biasing means, is provided between the protrusion 32b protruding from a predetermined portion of the arm 32 and the side of the main body of the chip mounter, so that the mirror rotating member 33 burns when it is rotated. Sexually supportive. Accordingly, the bottom surface of the part is projected onto the mirror 13 provided in the mirror rotating member 33. When the component is mounted, the mirror rotating member 33 is moved to avoid the interference caused by the mirror rotating member 33. That is, when the drive motor 38 is driven to rotate the belt 41, the rotary cam 35 coupled with the driven pulley 40 is rotated. Accordingly, the cam follow 35 is rotated, and the arm 32 coupled thereto is moved at an arbitrary angle, so that the mirror rotating member 33 coupled with the end 32a of the arm interferes with the component. It will move to a position that will not cause it. On the other hand, the length R of the arm is set to satisfy R = 2D / (cosφ-sinφ) in order to automatically compensate for the residual vibration and the position error caused when the mirror rotating member 33 rotates at high speed.

Next, the image of the component 1 is photographed by the position change detector 50 installed below the drive motor 38. That is, the light is irradiated from the illumination unit 51 to the mirror 13, and the image of the component reflected from the mirror 13 is focused onto the lens unit 52 located behind the illumination unit 51. The image focused by the lens unit 52 is captured by the recognition camera 53.

Referring to FIG. 5, the device for arranging a component for a chip mounter 300 using a mirror according to another embodiment of the present invention is another embodiment of the rotating means, and the rotating means 71 is an upper side surface of the arm 32. A cam follower 34 mounted to the cam follower 34, a linear cam 75 that is in contact with the cam follower 34 and is reciprocally supported perpendicularly to a side of the chip mounter, and a driving unit for driving the linear cams 75. Not shown), and a spring 37 for elastically supporting the rotation of the rotary mirror member 33.

Here, the same reference numerals as in the above-described drawings refer to the same member having the same function, and are substantially the same as described above, and thus detailed description thereof will be omitted.

The linear cam 75 is vertically reciprocated by the driving unit (not shown). Accordingly, the cam follow 34 rotates, and the arm 32 coupled thereto moves at an arbitrary angle, such that the mirror rotating member 33 coupled with the end 32a of the arm interferes with the component. It will move to a position that will not cause it.

Referring to FIG. 6, the device for arranging a component for a chip mounter 400 using a mirror according to still another embodiment of the present invention may be a rotation means, and the rotation means 81 may be formed of the arm 32. It includes the motor 82, the rotation axis of which is fixed to the hinge point (H). The arm 32 is rotated by the motor 82, so that the mirror rotating member 33 coupled with the end 32a of the arm is moved to a position such that it does not interfere with the component.

As described above, the component arrangement device for a chip mounter using the mirror according to the present invention is formed by the installation angle with respect to the hinge point of the rotating mirror member and the length of the arm of the rotating mirror member to compensate for the positional change of the components, the remaining of the mirror There is an advantage of automatically compensating for errors in the part position of the mirror due to vibration.

In addition, there is an advantage that the part recognition speed can be increased by automatically compensating for the position recognition error of the part.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Could be. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (5)

A nozzle for sucking the component; A rotation means positioned at the main body of the chip mounter spaced apart from the side of the nozzle by a predetermined distance, an arm inclined with the central axis of the nozzle, and rotated by a predetermined angle with respect to the hinge point by the rotation means; A rotation mirror member formed at an end and having a mirror, the length of the arm being a distance from the hinge point to the center point of the rotation mirror member R being the distance from the center point of the part to the center point of the rotation mirror member; When the angle between D, the hinge point, the center point of the rotating mirror member and the center point of the component is φ, the mirror rotation is set such that the values R, D and φ satisfy R = 2D / (cosφ-sinφ). An apparatus; And a position change detector for detecting a change in the position of the component reflected by the mirror. The method of claim 1, The rotating means includes a cam follower installed on the arm, a rotary cam in contact with the cam follower and rotatably supported by the main body, and a driving unit for driving the rotary cam. Parts alignment device for. The method of claim 1, The rotating means includes a cam follower installed on the arm, a linear cam which is in contact with the cam follower and is reciprocally supported by the main body, and a driving unit which drives the linear cam. Parts alignment device for. The method of claim 1, And said rotating means is a motor whose rotation axis is fixed to a hinge point of said arm. The method of claim 1, The position change detector includes an illumination unit for irradiating light to the rotating mirror member, a lens unit for focusing the image of the component, and a recognition camera for capturing an image of the component reflected from the rotating mirror member. Component alignment device for chip mounters using mirrors.