JPH09162535A - Positioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and simultaneously position a plurality of articles, such as substrates, etc., with high accuracy by separately providing carriers having housing sections for separately housing the articles and positioning members for positioning the articles. SOLUTION: When a positioning plate 14 is lowered by means of cylinders 28 and 28, pins 30 and 30 provided on the plate 14 get in the holes of carriers 22 and position the carriers 22. Substrates 20 are inserted into positioning holes 12 while the substrates 20 are supported by contacting tables provided at the front end sections of placing sections 24 inserted into the holes 12. When the substrates 20 are inserted into the holes 12, the substrates 20 can be inserted into the positioning sections of the holes 12 through tapered surfaces even when the substrates 20 are more or less deviated from the positioning sections of the holes 12. Therefore, the manufacturing cost of a semiconductor device can be reduced, because a plurality of individually cut substrates for semiconductor device can be easily and simultaneously positioned with high accuracy and the carriers 22 can be formed through press work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning device, and more particularly to a positioning device capable of positioning a plurality of articles simultaneously and with high precision.

[0002]

2. Description of the Related Art When a chip capacitor, a heat sink, or the like is mounted on a wiring board, the board may be screen-printed in order to apply a solder paste to a predetermined position on the board. The screen printing machine shown in FIG. 9 is used for such screen printing. In FIG. 9, the squeegee 1 is located above
Below the screen 100 provided with 12, a base 1
On the conveyors 106 and 106 (movable in the direction vertical to the drawing) provided on the units 04 and 104,
The large substrate 102 before being cut into pieces is placed.
The large substrate 102 is supported by backup pins 110, 110, ... Standing on the plate 108.
When performing screen printing on the large substrate 102, first, the plate body 108 is raised so that the large substrate 102 is raised while being supported by the backup pins 110, 110 ,. At this time,
The plate 1 is arranged so that the large substrate 102 is positioned at a predetermined position on the screen 100 by the cameras 114, 114.
The position is adjusted in the plane of 08. Next, the squeegee 112 runs from one end of the screen 100 to the other,
The solder paste is applied on the screen 100, and the solder paste is applied to predetermined positions on the large substrate 102. After that, the plate 108 is lowered to move the large substrate 102 onto the base 10.
The large substrate 102 is placed on conveyors 106, 106 provided on the substrates 4, 104 and conveyed, and the large substrate 102 is cut into a predetermined size to obtain individual substrates.

In the screen printing machine shown in FIG. 9, since the large substrate 102 before being cut into individual pieces is used, the large substrate 10
The positioning of the two can be done directly using the cameras 114,114. However, it may be necessary to apply screen printing to the individually cut substrates. In this case, it is possible to directly position each of the substrates cut into individual pieces by using the cameras 114, 114 as shown in FIG. Cannot be adopted. Therefore, by using the carrier 200 shown in FIG. 10, it is possible to simultaneously screen print a plurality of substrates cut into individual pieces. In this carrier 200, recesses 204, 204 ... For inserting and positioning the cut substrates into individual pieces are formed in the carrier plate 202.

[0004]

[Problems to be Solved by the Invention] Carrier 2 shown in FIG.
00 instead of the large substrate 102 shown in FIG.
A plurality of substrates can be screen-printed at the same time by placing them on 6, 106. However, in order to accurately apply the solder paste or the like to a predetermined portion of the substrate, it is necessary to position the substrate with high accuracy, and the recesses 204, 204, ... Formed in the carrier plate 202 can be accurately processed by grinding or the like. It is necessary to form. Therefore, it takes time to create the carrier 200, and
The cost of creation is also high. Moreover, it is necessary to secure the number of the carriers 200 according to the planned production amount of the substrates, but when the dimensions of the substrates are changed, all the carriers 2 are required.
It is necessary to remake 00. Furthermore, the clearance between the substrate inserted into the recess 204 formed with high precision and the inner wall surface of the recess 204 is small, and it becomes difficult to take out the screen-printed substrate from the recess 204. Therefore, an object of the present invention is to provide a positioning device capable of simultaneously and accurately positioning a plurality of articles such as substrates.

[0005]

As a result of studies to solve the above-mentioned problems, the present inventor has carried out a positioning member for positioning each carrier and a carrier having an accommodating portion for accommodating each of a plurality of articles. It is found that by providing and separately, it is possible to allow a predetermined clearance to facilitate the insertion / removal of the article in the accommodation part of the carrier, and it is possible to easily perform the highly accurate positioning of the article, The present invention has been reached. That is, the present invention, a carrier formed with a plurality of through holes for supporting and accommodating the article by the support portion,
A positioning member having a positioning hole in which a positioning portion corresponding to an article housed in each of the through holes is formed, and each of the articles housed in each of the through holes formed in the carrier, Insertion for inserting the articles housed in each of the through holes into the positioning holes of the corresponding positioning member when the carrier is positioned at a predetermined position so that the carrier can be inserted into the positioning holes of the corresponding positioning member. And a guide part for guiding an article to a positioning part in the positioning hole, which is formed in a carrier side opening of the positioning hole formed in the positioning member. It is located in the positioning device.

In the present invention, the guide portion can be easily formed by forming the guide portion formed in the carrier-side opening of the positioning hole as the tapered portion. Furthermore, insertion means for inserting the article into the positioning hole of the corresponding positioning member is provided to be insertable into and removable from the through hole of the carrier positioned at a predetermined position, and when the article is inserted into the positioning hole. A mounting portion provided with an abutment base that abuts and supports the article housed in the through hole, and the mounting portion so that the mounting portion moves in the insertion / removal direction with respect to the through hole of the carrier. By comprising the drive means for driving the section, it is possible to easily insert each article into the corresponding positioning hole while supporting the plurality of articles by the carrier. By forming the support portion of the through hole of the carrier by bending a part of the carrier body, the carrier can be easily formed by pressing.
Further, by providing the positioning member with a positioning tool for positioning the carrier at a predetermined position of the positioning member,
The carrier can be positioned by associating the through hole of the carrier with the positioning hole of the positioning member. In addition, in the mounting portion that constitutes the insertion means, an abutment table that abuts and supports a part of the article housed in the through hole of the carrier, and a suction section that adsorbs the article and fixes the article to the abutment table. By arranging with, it is possible to surely peel off a screen-printed article from the screen.

According to the present invention as described above, the positioning portion for the article is formed in the positioning hole provided in the positioning member, and the article is placed in the positioning portion at the carrier side opening. A guiding part for guiding is formed. For this reason, even if a predetermined amount of clearus is formed between the article and the through hole so that the article can be easily put into and taken out from the through hole formed in the carrier, the article housed in the through hole can be easily removed. As a result of the insertion means being able to insert into the positioning portion in the positioning hole via the guiding portion, a plurality of articles can be easily positioned simultaneously and with high accuracy.

[0008]

DETAILED DESCRIPTION OF THE INVENTION An example of the present invention is shown in FIG. FIG.
FIG. 1 is a schematic view of a screen printing machine including a positioning device according to the present invention. In FIG. 1, below a screen S having a squeegee (not shown) provided above, a positioning device 10 for simultaneously positioning a plurality of substrates (articles) cut into pieces is provided. The positioning device 10 includes a positioning hole 1 downward from the screen S.
The positioning plate 14 serving as a positioning member on which 2, 12, ... Are formed, and the conveyors 18, 18 provided on the carrier bases 16, 16 (movably provided in a direction vertical to the drawing) are mounted. A carrier 22 in which a plurality of through holes are placed and in which the substrate 20 is accommodated;
.. as the insertion means for inserting the substrate 20 housed in each of the through holes 2 into the positioning holes 12, 12 .. FIG.
In the screen printing machine shown in (1), the positions of the positioning plate 14 and the screen S are adjusted by the cameras 66, 66.

The positioning plate 14 constituting the positioning device 10 has cylinders 28, 28 mounted on a frame 26.
Is provided so as to be movable in the vertical direction. For this reason, when the positioning plate 14 is lowered by the cylinders 28, 28, the pins 30, 30 as positioning tools provided on the positioning plate 14 are inserted into the holes formed in the carrier 22 to position the carrier 22. This carrier 22
The positioning accuracy may be any position as long as the substrate 20 accommodated in the through hole of the carrier 22 can be inserted into the opening of the positioning hole 12 on the carrier 22 side. The carrier 22 may be processed with such accuracy that it can be formed by pressing a metal plate, and does not need to be formed by grinding unlike the conventional carrier 200 (FIG. 10). It can be obtained at low cost. Further, the through hole for accommodating the substrate 20 can also be provided with a clearance with respect to the substrate 20 so that the substrate 20 can be easily accommodated and taken out.

An example of such carrier 22 is shown in FIGS.
Shown in FIG. 3 shows the carrier 2 in the XX cross section of FIG.
2 is a partial cross-sectional view of FIG. The carrier 22 is formed by press working, and the cutout portion 34 is formed at the corner edge of the rectangular through hole 32, and the cutout portion 36 is formed so as to face each other at the straight edges that face each other. . Also,
As shown in FIG. 3, the tip ends of the pair of projecting portions 38, 38 projecting inward of the through hole 32 and facing each other are formed on a bent surface bent downward, and from this bent surface, the through hole is formed. 32
The substrate 20 inserted into the through hole 32 is supported by the support pieces 37, 37 formed so as to project inward. still,
The end of the carrier 22 is bent and formed into a flat surface so as to be placed on the conveyors 18, 18 (FIG. 3).

As shown in FIG. 4, a rectangular positioning hole 12 is formed in the positioning portion plate 14 provided with the pins 30, 30 for positioning the carrier 22 as described above, following the through hole 32 of the carrier 22. The notch 40 is formed at the corner edge of the positioning hole 12, and the notch 42 is formed at the straight edges facing each other. Further, the positioning end face 4 for positioning the substrate 20 with high precision is provided in the screen S (FIG. 1) side opening of the pair of projecting portions 44, 44 which project inward of the positioning hole 12 and face each other.
It is formed on the positioning portion composed of 6, 46. On the other hand,
As shown in FIG. 5, which is a cross-sectional view taken along the YY plane shown in FIG. 4, a taper portion is formed at the ends of the pair of protrusions 44, 44 on the side of the carrier 22. The slopes 48, 48 forming the taper portion are taper surfaces whose opening area increases in the end direction on the carrier 22 side. Therefore, the carrier 22 side opening of the positioning hole 12 is the substrate 2 side.
The area is larger than 0 and is larger than the opening area of the positioning portion. Therefore, even if the substrate 20 mounted on the positioned carrier 22 is slightly deviated from the positioning portion of the positioning hole 12, if the substrate 20 can be inserted into the opening portion on the carrier 22 side, the substrate 20 is inclined to the slopes 48, 4 and 4.
It can be surely inserted into the positioning portion along line 8. Therefore, the tapered portion is the guiding portion of the substrate 20.

The positioning hole 12 of the positioning plate 14
Requires precision for final positioning of the substrate 20, and thus requires precision processing such as grinding. However, when manufacturing the same type of substrate, the carrier 2
As in the case of 2, it is sufficient to prepare one positioning plate 14 without the need to prepare many. For this reason,
It is less expensive than the case of producing a large number of carriers 200 that have been precision processed by grinding or the like as in the conventional carrier 200 (FIG. 10).

The positioning hole 1 of the positioning plate 14 as described above
As shown in FIGS. 6 and 7, the distal end portion of the mounting portion 24 inserted into the carrier 2 through the through hole 32 of the carrier 22 has the same shape as the through hole 32 when passing through the through hole 32. Substrate 20 housed
Abutment tables 50, 52, and 54 that abut against and support the are provided so as to project from the tip end surface of the mounting portion 24. Of these contact bases, the contact bases 50 and 52 are capable of contacting the end of the substrate 20, and the notches 34 and 36 forming the through hole 32 of the carrier 22 and the positioning hole 12 of the positioning plate 14. The contact table 54 is provided at a position where it can pass through the notches 40 and 42, and the contact table 54 is provided at a position where it abuts near the center of the substrate 20 and supports the substrate 20. In addition to the abutment tables 50, 52, 54, suction pads 56, 56 as suction parts for sucking the substrate 20 are provided at the tip of the mounting part 24.
・ ・ Is also provided. These suction pads 56, 5
6 ... is for vacuum-adsorbing the substrate 20.

In this way, the abutment bases 50, 52, 5 are attached to the tips.
4 and suction pads 56, 56 ...
As shown in FIG. 1, the cylinders 4, 24, ... Are erected on a movable plate 60 that is vertically movable by a cylinder 62. Therefore, the cylinders 62 are provided so that the tip portions of the mounting portions 24, 24, ... Pass through the through holes 32 of the positioned carrier 22 and the positioning plate 14 can be inserted into and removed from the positioning holes 12. Can be driven to move the movable plate 60 up and down. The movable plate 60 is mounted on the mounting plate 58 provided on the frame body 26 when the cylinder 62 is stopped.

In the screen printing machine having the positioning device 10 shown in FIG. 1, the process of screen printing the substrate 20 accommodated in the through hole 32 of the carrier 22 will be mainly described with reference to FIGS. 7 and 8. And explain. FIG.
In the state shown in FIG. 1, the positioning plate 14 is lowered by the cylinders 28, 28, and the pins 30, 30 provided on the positioning plate 14 are inserted into the holes formed in the carrier 22 to position the carrier 22 as shown in FIG. It is in the state of being At this time, the substrate 20 accommodated in the through hole 32 of the carrier 22 is
It is located near the opening of the positioning hole 12 of the positioning plate 14 on the carrier 22 side. This substrate 20 is a cylinder 6
2 is driven to raise the movable plate 60, and as shown in FIG.
The contact table 5 provided at the tip of the mounting portion 24 that has passed through the through hole 32 of the carrier 22 and is inserted into the positioning hole 12
It is supported by 0, 52 and 54 and inserted into the positioning hole 12. The rising of the movable plate 60 causes the positioning hole 1 to move.
The substrate 20 is inserted into the positioning portion composed of the positioning end faces 46, 46 in the positioning plate 2, and the upper surface of the substrate 20 is positioned on the positioning plate
4 until the top surface is matched. At this time, as shown in FIG.
It passes through the notches 34 and 36 which form 2 and the notches 40 and 42 which form the positioning hole 12 of the positioning plate 14.
Even if the substrate 20 is slightly displaced from the positioning portion of the positioning hole 12, the substrate 20 is tapered (slopes 48, 48).
Can be inserted into the positioning part along the.

In the screen printing machine shown in FIG. 1, while maintaining the state shown in FIG. 8, the elevating motor 64 mounted on the frame body 26 raises the frame body 26 in the direction of arrow A, and the upper surface of the positioning plate 14 is moved. After bringing the screen and the screen S into close contact,
Screen printing is performed by running a squeegee (not shown) from one end of the screen S to the other end and applying solder paste or the like to a predetermined portion of the substrate 20. At the time of such screen printing, the center portion and the end portion of the substrate 20 come into contact with the abutment bases 50, 5
Since it is supported by 2, 54, it is possible to prevent the distortion of the substrate 20 due to the pressing force of the squeegee and the like, and it is possible to perform accurate printing on the substrate 20. Next, after the frame 26 is lowered by the lifting motor 64 to separate the positioning plate 14 from the screen S, the screen-printed substrate 2
0 to drive the cylinder 62 to lower the movable plate 60,
The mounting portion 24 that has descended after passing through the through hole 32 of the carrier 22.
Then, the substrate 20 placed on the abutment bases 50, 52, 54 is inserted again into the through hole 32 of the carrier 22 and accommodated therein. At this time, since the screen S and the substrate 20 are adhered to each other with solder paste or the like, the suction pads 56, 56
By lowering the frame body 26 and the mounting portion 24 in a state in which the substrate 20 is vacuum-adsorbed by means of the. After that, the cylinder 28 is driven to raise the positioning plate 14, the pins 30, 30 provided on the positioning plate 14 are pulled out from the holes formed in the carrier 22, the positioning state of the carrier 22 is released, and the carrier 22 is moved to the belt 18. , 18 to remove from the screen printer.
In FIG. 1 described above, the mounting portions 24, 24 ...
If a pulse motor is used instead of the cylinder 62 that moves up and down, the substrate 20 can be inserted into the positioning hole 12 and the carrier 22 can be re-accommodated in the through hole 32 more reliably. That is, the pulse motor is driven to lower the movable plate 60 so that the mounting portion 24 is lowered while the substrate 20 is being sucked by the suction pad 56, and the substrate 20 is reinserted into the through hole 32 of the carrier 22. The substrate 20 is the support piece 37.
Then, the pulse motor is once stopped to stop the lowering of the movable plate 60, the suction of the suction pad 56 is released, and the substrate 20 is re-stored in the through hole 32 of the carrier 22. Then, the pulse motor is restarted to further lower the movable plate 60. 1 to 8 have described the example in which the positioning device 10 is used in the screen printing machine, it goes without saying that the positioning device 10 may be adopted in a general machine tool.

[0017]

According to the present invention, a plurality of semiconductor device substrates that have been cut into individual pieces can be easily positioned at the same time with high precision, and a carrier that requires the production of a large number of pieces can be ground. The positioning device can be inexpensive because it can be formed with precision that can be formed by press processing that is cheaper than processing. Therefore, when the positioning device of the present invention is applied to a screen printing machine or the like, it is possible to reduce the manufacturing cost of the semiconductor device substrate that is cut into individual pieces and then screen printed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating an outline of a screen printing machine using a positioning device according to the present invention.

FIG. 2 is a front view of a through hole formed in a carrier.

FIG. 3 is a partial cross-sectional view of the carrier taken along the line XX shown in FIG.

FIG. 4 is a front view of a positioning hole formed in a positioning plate.

5 is a partial cross-sectional view of the positioning plate taken along the line YY shown in FIG.

FIG. 6 is a front view of a mounting portion.

FIG. 7 is an explanatory diagram for explaining the operation of the positioning device of the screen printing machine shown in FIG.

FIG. 8 is an explanatory diagram for explaining the operation of the positioning device of the screen printing machine shown in FIG. 1.

FIG. 9 is an explanatory diagram illustrating an outline of a conventional screen printing machine.

FIG. 10 is a cross-sectional view of a conventional carrier.

[Explanation of symbols]

 10 Positioning Device 12 Positioning Hole 14 Positioning Plate 20 Substrate 22 Carrier 24 Placement Part 32 Through Hole 37 Support Piece 46 Positioning End Face 48 Forming Positioning Part 48 Slopes Forming Tapered Part 50, 52, 54 Abutment Base 56 Adsorption Part

Claims (6)

[Claims] 1. A carrier having a plurality of through holes formed therein for supporting and accommodating an article by a supporting section, and a positioning hole internally provided with a positioning section corresponding to the article accommodated in each of the through holes. The carrier is positioned at a predetermined position so that each of the positioning member formed with and each of the articles housed in the through holes formed in the carrier can be inserted into the corresponding positioning hole of the positioning member. A positioning device for inserting the articles housed in each of the through holes into the positioning holes of the corresponding positioning members, wherein the carrier-side openings of the positioning holes formed in the positioning members are provided. A positioning device for guiding an article to the positioning part in the positioning hole is formed in the part. 2. The positioning device according to claim 1, wherein the guiding portion formed in the carrier-side opening of the positioning hole is a tapered portion. 3. An insertion means for inserting an article into a positioning hole of a corresponding positioning member is provided to be insertable into and removable from a through hole of a carrier positioned at a predetermined position, and the article is inserted into the positioning hole. And a mounting portion provided with an abutment base that abuts and supports the article accommodated in the through hole, and the mounting portion is moved in the insertion / removal direction with respect to the through hole of the carrier. The positioning device according to claim 1 or 2, further comprising: a driving unit that drives the mounting portion. 4. A support portion provided in a through hole of a carrier,
The carrier body is formed by bending a part of the carrier body.
The positioning device according to claim 3. 5. The positioning device according to claim 1, wherein the positioning member is provided with a positioning tool for positioning the carrier at a predetermined position of the positioning member. 6. An abutment base that abuts and supports a part of an article housed in a through hole of a carrier on a mounting portion that constitutes the insertion means, and an adsorbent that adsorbs and fixes the article to the abutment stand. The positioning device according to any one of claims 1 to 5, further comprising a suction unit.