JP2008218792A - Alignment method of plate-shaped electronic part and alignment device for use therein - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an alignment method and an alignment device for use therein, wherein an electronic part of a thin thickness can also be aligned by being certainly positioned without causing a crack or damage. <P>SOLUTION: The alignment method of a plate-shaped electronic part 9 comprises: a first step of sucking and holding one face of the plate-shaped electronic part 9 for suspension; and a second step of pressing one side of the plate-shaped electronic part 9 from its side face, thereby moving the plate-shaped electronic part 9 for positioning and alignment. At the second step, two opposing sides of the plate-shaped electronic part 9 are successively pressed and moved, so that after a positioning in a first direction, the other two sides perpendicular to the two sides are successively pressed for movement. As a result, a positioning in a second direction perpendicular to the first direction is performed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for aligning a thin plate-shaped electronic component and an alignment apparatus used therefor.

  2. Description of the Related Art A mounting device or a transfer device that transfers a surface of an electronic component such as a chip component or a semiconductor by sucking and holding it with a suction collet has an alignment function for adjusting the positional deviation of the sucked and held electronic component. This alignment function is achieved by holding a pair of sucked and held electronic parts by holding two pairs of restricting plates provided perpendicular to the four sides of the electronic parts in contact with the side surfaces of the electronic parts. A method of moving and adjusting to a desired position, a method of positioning an electronic component on a supply pallet by swinging, and the like are used.

  FIG. 4 is an example of an alignment apparatus that positions electronic components with high accuracy on a supply pallet by swinging. This aligning device is composed of four plate-like bodies 1, 2, 3, 4 and the uppermost plate-like body 1 is provided with a through hole 5 larger than the outer shape of the electronic component to be aligned and its lower layer. The second-layer plate-like body 2 is provided with a plurality of alignment through holes 6 substantially equal to the outer shape of the electronic component. These four plate-like bodies 1, 2, 3, and 4 are positioned by being stacked by positioning pins 7, and are positioned so that the alignment through hole 6 is disposed immediately below the through hole 5. The alignment device composed of these four plate-like bodies 1, 2, 3, 4 is swung with a constant amplitude by a swinging mechanism 8 provided on the bottom surface.

  The electronic components supplied into the through hole 5 are moved by swinging by the swinging mechanism 8 and are accurately aligned by dropping into the same at the moment when they match the outer shape of the alignment through hole 6 at the bottom. Is.

As prior art document information relating to the invention of this application, for example, Patent Document 1 is known.
JP 2003-289197 A

  In the above conventional alignment method, when the electronic component is a cube, it is easy to drop into the alignment through hole 6. However, in the case of a plate-like, particularly thin electronic component, it is easily caught on the inner wall of the alignment through hole 6 and aligned. There was a problem that was difficult to do. Furthermore, it is necessary to wait for the electronic component to move to a position that matches the alignment through hole 6, and there is a problem that it is difficult and time-consuming to align a plurality of electronic components at the same time.

  Accordingly, an object of the present invention is to reliably align plate-like electronic components in a short time.

  In order to achieve the above object, the present invention provides a plate-like electronic component alignment method, comprising: a first step of sucking and holding one surface of the plate-like electronic component and suspending; and one side of the plate-like electronic component. Is pressed from the side surface to move, position and align the plate-like electronic component, and the second step sequentially presses the two opposite sides of the plate-like electronic component. After positioning in the first direction, the other two sides orthogonal to the two sides are sequentially pressed and moved to move in the second direction orthogonal to the first direction. Positioning is performed.

  In the method for aligning plate-like electronic components according to the present invention, after one surface of the plate-like electronic component is sucked and held and suspended, one side of the plate-like electronic component is pressed from the side surface and moved. Rather than pressing the two sides of the plate-like electronic component at the same time and holding this pressure, press one side of the two opposing sides and move it by a certain amount, then press the opposite side By moving it, the first positioning is performed in this pressing direction. Then, the other two sides orthogonal to the two sides are sequentially pressed one by one in the same manner as described above, thereby performing the second positioning and aligning the plate-like electronic components. As described above, by sequentially pressing each side as a reference, even a plurality of plate-like electronic components can be positioned and aligned in a short time. Further, since the plate-like electronic component is not sandwiched, even a plate-like electronic component that is particularly thin, light, and easily damaged can be simultaneously produced without being broken or damaged.

  Hereinafter, the details of the present invention will be described with reference to the drawings.

  An example of the plate-like electronic component 9 in the present embodiment is a plate-like electronic component that is light, particularly thin with respect to the outer shape and easily damaged, such as a semiconductor or a multilayer capacitor element. It has a short side and a long side.

  FIG. 1 is a perspective view of a main part of an alignment apparatus according to an embodiment of the present invention. The aligning device for the plate-like electronic component 9 according to the present embodiment includes a supply unit 10 for supplying the plate-like electronic component 9, and a plate-like electronic component 9 of the supply unit 10 for sucking and holding and conveying the plate-like electronic component 9. An adsorbing portion 11 that can move in the vertical and horizontal directions, and an aligning portion that corrects the tilt (rotation) of the plate-like electronic component 9 sucked and held by the adsorbing portion 11 and aligns it in a predetermined position in the horizontal direction. 12 and a carry-out part 13 for transferring the plate-like electronic components 9 aligned in the alignment part 12 and transporting them to the next process.

  A pallet 14 having a bottomed groove 14a larger than the outer shape of the plate-like electronic component 9 is placed on the supply unit 10, and the plate-like electronic component 9 is inserted into the bottomed groove 14a to be roughly positioned in advance. Keep it.

  The suction unit 11 includes a suction head 15 and a moving mechanism 16 that moves the suction head 15 in the horizontal and vertical directions. The suction head 15 includes a plurality of suction collets 17 for vacuum-suctioning and holding one surface of the plate-like electronic component 9 at the lower end thereof. The moving mechanism 16 includes a motor, a ball screw, a linear guide, and the like, and conveys the suction head 15 from the supply unit 10 to the alignment unit 12 and then to the carry-out unit 13.

  The aligning portion 12 has a plurality of convex portions 18 arranged at regular intervals on the top surface portion, and intersects while surrounding the convex portion 18 on the base 19 and the base 19 that can move in the horizontal direction (x direction). A pair of restricting plates 20a, 20b that are arranged to move in the horizontal direction (y direction), and a cam mechanism 21 for urging and moving the base 19 and the restricting plates 20a, 20b in the horizontal direction. It consists of and.

  As shown in FIG. 2, the cam mechanism 21 includes a cam plate 22 that rotates in a certain direction or reciprocates at a certain center angle, and a plurality of cam followers 23 that move following the outer shape of the cam plate 22. It is configured. These cam followers 23 are always in contact with the outer periphery of the cam plate 22 with a constant pressing force by a biasing means 24 such as a spring. Further, biasing means 25 such as a spring is also provided on the outer periphery of the base 19 and the regulation plates 20a and 20b, and is always biased so as to contact the cam follower 23. By rotating the cam plate 22 in a fixed direction or rotating at a fixed center angle, the cam follower 23 is moved in accordance with the outer shape of the cam plate 22 and the base 19 and the pair of regulating plates 20a and 20b are brought into contact with each other. Energizing is performed through the block 23a to horizontally move a certain distance. In addition, the cam follower 23 is each arrange | positioned at the base 19 and a pair of control board 20a, 20b, and each moves independently.

  In the present embodiment, the cam plate 22 is constituted by one piece, but may be constituted by a plurality of pieces according to the number of cam followers 23. Furthermore, a mechanism for driving each cam plate 22 independently may be provided. By doing so, the degree of freedom in designing the outer shape of the cam plate 22 can be increased, and as a result, the degree of freedom in operation of the base 19 and the restriction plates 20a and 20b can be increased.

  In the carry-out portion 13, a bottomed replacement hole 26 substantially equal to the outer shape of the plate-like electronic component 9 is provided on the surface, and after the plate-like electronic component 9 aligned with the replacement hole 26 is inserted and transferred, To the next step. In addition, when laminating | stacking the several plate-shaped electronic component 9, after carrying out said transfer repeatedly several times, it carries out intermittently.

  The plate-like electronic component 9 inserted into the bottomed groove 14a of the pallet 14 is conveyed under the suction head 15, and the suction head 15 is lowered so that the plate-like electronic component 9 is provided by the suction collet 17 provided at the lower end. One side of the component 9 is suspended by suction. Next, with the plate-like electronic component 9 suspended, the plate-like electronic component 9 is inserted between the plurality of convex portions 18 provided on the base 19 by being moved onto the alignment portion 12 by the moving mechanism 16.

  At this time, the plate-like electronic component 9 is suspended from the suction collet 17, and the height thereof is not brought into contact with the top surface of the base 19 and is maintained to be equal to or lower than the height of the convex portion 18. . By rotating or rotating the cam plate 22 in this suspended state, the base 19 or the pair of regulating plates 20a and 20b is pressed and moved via the cam follower 23 and the contact block 23a. And the convex part 18 provided in the top | upper surface part of this base 19 or the side surface of regulation board 20a, 20b is made to contact | abut to the side surface of a pair of short side and long side of the plate-shaped electronic component 9 sequentially. After correcting the deviation of the tilt (rotation) with reference to the part 18 or the regulation plates 20a, 20b, the horizontal position is adjusted and aligned at a predetermined position.

  Then, the suction head 15 is moved so that the aligned plate-like electronic components 9 are conveyed onto the carry-out portion 13 and transferred to the replacement hole 26.

  A feature of the present embodiment is that the plate-like electronic component 9 is not sandwiched and positioned, but is positioned at the final position by shifting the side surfaces of the four sides while sequentially pressing in a suspended state. By doing so, the plate-like electronic component 9 is not damaged by the bending when it is sandwiched, so that even if it is thin and easily damaged, it can be surely aligned. Further, since the plate-like electronic components 9 are suspended and positioned while being attracted, the plate-like electronic components 9 do not move after positioning, and a plurality of them are simultaneously positioned and accurately transferred to the replacement hole 26. Can do.

  Next, the details of the alignment method, which is a feature of the present invention, will be described with reference to the drawings.

  FIG. 3 is a top view of the alignment unit 12, particularly the base 19 and the pair of regulating plates 20a and 20b in the alignment apparatus of FIG. The base 19 has convex portions 18 provided at regular intervals, and the pair of regulating plates 20a and 20b are provided with rectangular holes 20c and 20d, respectively. The pair of regulation plates 20a and 20b are placed on the base 19 so as to be movable in the horizontal direction, and surround the convex portion 18 with rectangular holes 20c and 20d. Further, the rectangular holes 20 c and 20 d intersect with each other with a certain width A on the center line of the base 19 and overlap each other. At this intersection, the other rectangular hole 20d is fitted in a notch provided in the side wall of one rectangular hole 20c. The side surfaces of the rectangular holes 20c, 20d intersecting with this constant width A and the side surfaces of the convex portions 18 serve as contact surfaces when the plate-like electronic component 9 is pressed and moved.

  The plate-like electronic component 9 in this embodiment is always sucked and held by the suction collet 17 and suspended, but only the plate-like electronic component 9 is shown in order to avoid the complicated feeling of the drawing. is doing.

  First, as shown in FIG. 3A, the alignment method in the present embodiment inserts the plate-like electronic component 9 between the protrusions 18 on the base 19 and suspends it at a certain height. The cam mechanism 21 (FIG. 1) biases the side surface of the base 19 through the cam follower 23 and the contact block 23a. By this urging force, the base 19 moves a certain distance in the horizontal direction (the direction of the arrow B), so that the side surface of the projection 18 abuts one side of the pair of long sides of the plate-like electronic component 9. The plate-like electronic component 9 moves in the same direction as the base 19. At this time, the positional deviation of the plate-shaped electronic component 9 sucked and held by being inclined (rotated) by the suction collet 17 is corrected with reference to the side surface of the convex portion 18.

  Next, as shown in FIG. 3B, the base 19 is biased by the cam mechanism 21 in the direction opposite to that shown in FIG. In this way, the projection 18 is brought into contact with the other side of the pair of long sides contacted in FIG. 3A, and the plate-like electronic component 9 is again horizontally moved in the opposite direction, so that the x direction The plate-like electronic component 9 is positioned at the final position in FIG.

  It should be noted that the movement amount of the plate-like electronic component 9 exceeds the final position in the x direction in FIG. 3A and reaches the final position in FIG. 3B. Is determined in advance, and the outer shape of the cam plate 22 (FIG. 1) is designed.

  Next, as shown in FIG. 3 (c), one of the pair of regulating plates 20a and 20b is biased by the cam mechanism 21 to horizontally move in the direction of arrow D, thereby moving the side surface of the rectangular hole 20c. The plate-like electronic component 9 is brought into contact with one side of the pair of short sides. By doing so, the positional deviation such as the inclination (rotation) of the plate-like electronic component 9 is corrected again with the side surface of the rectangular hole 20c as a reference.

  Then, as shown in FIG. 3 (d), the other regulating plate 20b is urged so that the other side of the pair of short sides abutted in FIG. The plate-like electronic component 9 is moved in the direction of arrow E, which is the opposite direction, so as to be positioned and aligned at the final position in the y direction.

  3 (c) and 3 (d), the movement amount of the plate-like electronic component 9 exceeds the final position in the y direction in FIG. 3 (c), and the final movement in FIG. 3 (d). The amount of movement of the pair of restricting plates 20a and 20b is obtained in advance so as to be positioned, and the outer shape of the cam plate 22 (FIG. 1) is designed.

  What is important here is that the convex portion 18 and the regulation plates 20a and 20b do not sandwich the plate-like electronic component 9, but are moved to the final position by sequentially abutting and shifting on the side surfaces of the four sides. In this way, even in the case of the plate-like electronic component 9 that is particularly thin with respect to the outer shape and easily damaged, since it is pressed from the side surfaces of the four sides, that is, the direction having the highest rigidity, there is no bending due to stress or the like. It can be aligned with high accuracy without cracking or breaking.

  In addition, since the plate-like electronic component 9 is positioned while being sucked in a suspended state, the plate-like electronic component 9 can be accurately transferred to the replacement hole 26 without moving after the positioning.

  Further, by sequentially abutting the side surfaces of the four sides of the plate-like electronic component 9, the plurality of plate-like electronic components 9 can be positioned simultaneously and reliably without being broken or damaged. This is because the variation in the stress applied to each plate-like electronic component 9 during positioning is reduced due to the displacement of the suction position before positioning.

  Further, when the plate-like electronic component 9 has a short side and a long side, the plate-like electronic component 9 can be positioned and aligned with higher accuracy by always moving the long side in contact first.

  In the above embodiment, the pair of short sides and long sides of the plate-like electronic component 9 are separately brought into contact with each other and moved a total of four times, but depending on the required positioning accuracy, For example, the step of FIG. 3D may be omitted.

  Further, in FIG. 3C, the plate-like electronic component 9 is prevented from being inclined again by abutting one side of the short side with the regulating plate 20a while keeping the convex portion 18 along one side of the long side. And can be aligned with higher accuracy.

  In the method for aligning plate-like electronic components according to the present invention, after one surface of the plate-like electronic component is sucked and held and suspended, one side of the plate-like electronic component is pressed from the side surface and moved. Rather than pressing the two sides of the plate-like electronic component at the same time and holding this pressure, press one side of the two opposing sides and move it by a certain amount, then press the opposite side By moving it, the first positioning is performed in this pressing direction. Then, the other two sides orthogonal to the two sides are sequentially pressed one by one in the same manner as described above, thereby performing the second positioning and aligning the plate-like electronic components. As described above, by sequentially pressing each side as a reference, even a plurality of plate-like electronic components can be positioned and aligned in a short time. Furthermore, since the plate-like electronic component is not sandwiched, even a plate-like electronic component that is particularly thin, light, and easily damaged can be simultaneously aligned without cracking or breaking. The present invention is useful for a method of aligning shaped electronic components and an alignment apparatus used therefor.

The principal part perspective view of the alignment device explaining one embodiment of this invention Schematic diagram explaining the cam mechanism of the device Top view of a process for explaining an example of an alignment method using the apparatus Exploded perspective view for explaining a conventional alignment device

Explanation of symbols

9 Plate-shaped electronic component 17 Adsorption collet 18 Protruding portion 19 Base 20a, 20b Restriction plate 21 Cam mechanism

Claims (5)

A method for aligning plate-like electronic components, the first step of sucking and holding one surface of the plate-like electronic component and suspending the plate-like electronic component, and pressing one side of the plate-like electronic component from its side surface It consists of a second step of moving and positioning and aligning the electronic components. In the second step, positioning in the first direction is performed by sequentially pressing and moving the opposing two sides of the plate-like electronic component. After performing this, the other two sides orthogonal to the two sides are sequentially pressed and moved, thereby positioning the plate-like electronic component in the second direction orthogonal to the first direction. The plate-like electronic component according to claim 1, wherein the plate-like electronic component has a short side and a long side, and after the long side is pressed and moved in the second step, the short side is pressed and moved. Alignment method. A base that has a convex portion on the top surface and is movable in the horizontal direction, a pair of horizontally movable restriction plates disposed on the base so as to surround the convex portion, and these restrictions An apparatus for aligning a plate-like electronic component, which is arranged on a plate and has a movable suction collet that holds and suspends one surface of the plate-like electronic component, and sucks the plate-like electronic component with the suction collet After holding and suspending, the projecting parts are sequentially brought into contact with the side surfaces of the two opposite sides of the plate-like electronic component and moved by a certain amount to perform positioning in the first direction. A plate-like electronic component that is positioned and aligned in a second direction perpendicular to the first direction by moving the fixed plate by contacting the regulating plate to the side surfaces of the other two sides perpendicular to the side. Alignment device. 4. The plate according to claim 3, wherein the plate-like electronic component has a long side and a short side, and after a convex portion is brought into contact with the side surface of the long side, a regulation plate is brought into contact with the side surface of the short side. -Shaped electronic component alignment device. The plate-like electronic component aligning device according to claim 3 or 4, wherein the base and the regulating plate are moved by a cam mechanism.

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