JPH11262823A - Parts supply position confirming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct confirmation and adjustment so that electronic parts in a tape feeder are supplied to a specified position without the necessity of skill in confirming by providing a confirming means directly reflecting the position to which electronic parts in tape feeders are supplied and confirming the shift of the electronic parts supply position due to a cause which has not been confirmed. SOLUTION: A camera head 30 is attached to the securing head mounting seat 11 of an index table 1, and a supply position confirming unit 52B provided with supply position identification holes 53A and 53B is installed on a tape feeder mounting base 80, and the pictures of supply position identification holes 53A and 53B are taken by the camera 32, which is installed in the camera head 30 and is connected to an image processing circuit, and the positions of the supply position identification holes 53A and 53B are compared with the reference positions stored in the image processing circuits beforehand, and the differences between the supply position identification holes 53A and 53B and the reference positions are indicated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component mounting machine capable of mounting various types of chip-shaped electronic components on a substrate, and more particularly, to a motor having a plurality of mounting heads arranged on the periphery of an index table. The present invention relates to a technique for confirming a component supply position of an electronic component mounting apparatus suitable for a so-called sequence system that picks up and transfers electronic components from a fixedly arranged supply unit in a mounting order with intermittent rotation of a driven index table.

[0002]

2. Description of the Related Art Conventionally, Japanese Unexamined Patent Publication No.
In Japanese Patent No. 223895, a plurality of mounting heads provided on a peripheral portion of an index table are rotatable with respect to the index table and rotated about a rotation center axis parallel to an intermittent rotation center axis of the index table to be positioned at a plurality of positions. A mounting head body, held at a lower end of the mounting head body, at least two or more positions corresponding to the plurality of positions on a concentric circle of the rotation center axis at the lower end, It is provided with a plurality of kinds of suction nozzles arranged rotatably and vertically and selection means for holding the suction nozzles in a non-selected state upward or in a selected state downward, and is fixedly arranged with the suction nozzles in the selected state. An electronic component mounting device that sucks and holds an electronic component from a supplied supply unit, transfers the electronic component onto a substrate, and mounts the electronic component is shown. The means for checking and adjusting the tape feeder component supply position of the electronic component mounting apparatus is replaced with one of a plurality of mounting head mounting seats 11 provided on the periphery of the index table 1 as shown in FIGS. The jig A90 is attached to the tape feeder mounting table 8
The jig B95 is attached to the index table 1. The jig A90 includes shafts 91 and 92 that can move up and down in a direction parallel to the intermittent rotation axis of the index table 1. The jig B95 fits the outer diameters of the shafts 91 and 92 to a predetermined value. With holes 96 and 97 that fit in a relationship
The index table 1 is intermittently rotated so that the jig A90 vertically overlaps the jig B95, and the jig A9
0 shafts 91 and 92 are lowered, and holes 96 and 9 of jig B95 are lowered.
7, and confirm that the positioning block 81 of the tape feeder mounting table 80 is at a predetermined position. By lowering the shafts 91 and 92 of the jig A 90, the jig B
If the tape does not fit in the holes 96 and 97 of the electronic component mounting device, the positioning position of the positioning block 81 with respect to the tape feeder mounting table 80 is adjusted so that the shafts 91 and 92 enter the holes 96 and 97. The feeder mounting base is divided into a plurality of parts, and a jig B95 is sequentially attached to each positioning block 81 of the tape feeder mounting base, and confirmation and adjustment are repeated.

[0003]

The mounting position of the positioning block 81 on the tape feeder mounting table 80 is confirmed and adjusted using the jigs A90 and B95 described above.
In order to adjust the electronic component supply position of the tape feeder mounted on the tape feeder mounting table to a predetermined position, the procedure of adjusting the position using these conventional jigs A90 and B95 is as follows. A jig B95 is mounted on a positioning block 81 fixed to the mounting table 80 with bolts 89. The positioning block 81 performs positioning when a tape feeder is mounted. Therefore, the jig B95 reflects the position of the positioning block 81. However, the electronic component supply position deviation of the electronic component supply position of the tape feeder is not directly reflected, and the electronic component supply position is not confirmed such that the tape feeder is not mounted in the tape feeder mounting base 80 in an accurate positioning state. Also, the shaft 9 of the jig A90
The operation of lowering the first and the second 92 to confirm that they enter the holes 96 and 97 of the jig B95 requires skill and is troublesome. An object of the present invention is to provide a checking means which directly reflects the electronic component supply position of the tape feeder so that a position shift of the electronic component supply position due to a cause which has not been confirmed so far can be confirmed. It is an object of the present invention to provide a confirmation device which enables confirmation and adjustment so that an electronic component supply position of a tape feeder is at a predetermined position without requiring skill.

[0004]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a camera in which a mounting head mounting seat provided on a peripheral portion of an index table is replaced with a mounting head. Attach a head, mount a supply position checker equipped with a supply position recognition hole in place of the tape feeder on the tape feeder mounting base, and image the supply position recognition hole with a camera provided on the camera head and connected to an image processing circuit The image processing circuit compares the reference position stored in advance with the position at which the camera captures and recognizes the supply position recognition hole, and calculates a difference between the reference position and the position at which the supply position recognition hole is captured and recognized. Is displayed, and a component supply position confirmation device is characterized.

According to a second aspect of the present invention, the master gauge (40) has a camera head mounting seat (41) at an upper portion, and a flat portion (42) and position confirmation holes (43A, 43B, 4) at a lower portion.
3C), and a camera head (30) is fixed to the camera head mounting seat (41).
0) and a camera (32) connected to the image processing circuit.
A, 32B, 32C) and the position confirmation holes (43A, 43A).
B, 43C), and the image processing circuit performs position confirmation holes (43A, 43B, 4) in the master gauge (40).
The component supply position confirmation device according to claim 1, wherein the position is recognized and stored based on the position of 3C).

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a device for confirming a component supply position according to an embodiment of the present invention, which can surely and easily set up an electronic component mounting device.

FIG. 11 shows an outline of an entire electronic component mounting apparatus as an object to which the present invention is applied. As an example, 1 is an index table, 2 is a mounting head, 3 is an XY table, and XY is an XY table. The table 3 includes a substrate mounting portion 5 for positioning and fixing the substrate, and an XY moving portion including the substrate mounting portion 5 is movable in the XY directions with respect to the main body base 4. , 7 is a substrate carry-out conveyor. The printed circuit board sent from the previous process is taken in from the substrate carry-in conveyor 6 and conveyed. Then, the XY table 3 moves to continuously align the printed circuit board with the substrate carry-in conveyor 6. Both sides are supported and transported by the substrate mounting portion 5 to be fixed at a predetermined position. Reference numeral 8 denotes a component supply unit having a plurality of electronic component supply devices. A plurality of mounting heads 2 are mounted at equal intervals on the periphery of the index table 1,
Each of the mounting heads 2 moves along the rotation of the index table 1 from the component supply unit 8 for picking up electronic components to the XY table 3 for fixing the printed circuit board on which the electronic components are mounted to the board mounting unit 5. After that, it circulates again on the component supply unit 8. The means for transporting the printed circuit boards in the substrate placing section 5, the substrate carry-in conveyor 6, and the substrate carry-out conveyor 7 is, for example, an endless belt configured to support and transfer both sides of the printed circuit board. As another configuration, it is also known that a member that linearly reciprocates in the transport direction is provided with a claw that pushes the rear end of the printed circuit board, that has a function of pushing in the transport direction and that retracts when returning. 9 is an operation panel. Each of the component suction nozzles 21 of the mounting head 2 can be moved up and down with respect to the index table 1, and moves up and down when the component suction nozzle 21 of the predetermined mounting head 2 reaches a predetermined supply device with the rotation of the index table 1. To hold a predetermined electronic component. The mounting heads 2 each holding a predetermined electronic component sequentially reach the mounting position on the XY table 3 as the index table 1 rotates. The board mounting portion 5 of the XY table 3 on which the printed circuit board is mounted moves in the XY directions, and the position on the printed circuit board surface where a predetermined electronic component is to be mounted is positioned at the mounting operation position. The component suction nozzle 21 of the mounting head 2 holding the electronic component moves up and down at the mounting operation position to mount the electronic component on the printed circuit board surface. The electronic component is held by an adhesive previously applied to the printed circuit board surface. The printed circuit board on which all the predetermined electronic components are mounted is sent out by the board unloading conveyer 7 and sent to a subsequent process.

FIGS. 7 and 8 show in detail the component supply section 8 of the electronic component mounting apparatus shown as an example in FIG. That is,
FIG. 7 is a cross-sectional view including the rotation center axis of the mounting head 2 and a cross-sectional view of the index table 1, a cross-sectional view of the tape feeder mounting table 80 and the positioning block 81 of the component supply unit 8, and a tape feeder mounted on the tape feeder mounting table 80. 82
82B, and the component supply unit 8 is mainly shown in a cross-sectional view in the up-down direction. FIG. 8 is a plan view of the tape feeder mounting table 80 shown in FIG. 7, which is one of a plurality of divided tape feeder mounting tables 80 for one electronic component mounting apparatus. The index table 1, which has a fan-shaped shape with its center at the center, is represented by imaginary lines, and the tape feeder mounting table 80 is shown in an easily visible manner.
At the periphery of the index table 1, mounting head mounting seats 11 are provided at equal angular intervals. The mounting heads 2 are mounted on the mounting seats 11. The mounting heads 2 are mounted on all of the mounting seats 11, respectively. However, in this case, one mounting head 2 is representatively shown to make the tape feeder mounting table 80 easy to see, and the trajectory of the center of the mounting head 2 moving by the intermittent rotation of the index table 1 is indicated by a dashed line 12. The position at which the head 2 intermittently moves and stops is indicated by an alternate long and short dash line 13. At this moving and stopping angle position 13, the mounting head 2 has three component suction positions 21 ′ for the component suction nozzle 21. This is because the mounting head body 20 rotates and the component suction nozzle 21 provided eccentrically from the rotation center has three component suction positions.

[0009] As shown in FIG.
Has four angular positions 13 and has four positioning blocks 81 attached thereto. One positioning block 81 has a structure capable of positioning three tape feeders 82 respectively. 82 is mounted on the tape feeder mounting table 80, the component supply position 8
A predetermined positional relationship is maintained with the component suction nozzle 21 for picking up the electronic component 3. Therefore, the tape feeder 82 shown in FIGS. 9 and 10 includes a positioning piece 84 corresponding to the positioning block 81 and a component supply. It is designed to obtain a predetermined positional accuracy with the position 83 in advance. FIG. 8 shows a state in which the tape feeders 82A, 82B, and 82C are mounted on the tape feeder mounting table 80 corresponding to one of the angular positions 13 at which the mounting head 2 intermittently moves and stops. It is not always necessary to mount the three components together, and there may be an angular position 13 where the three components are not mounted. The mounting of the tape feeder 82 corresponds to a program stored in advance in an electronic component mounting device that mounts electronic components on the printed circuit board surface. And place it. Tape feeders 82A, 8
2B and 82C are component supply positions 83A, 83B and 83, respectively.
C, the component supply positions 83A, 83B, and 83C correspond to three component suction positions 21 'by the component suction nozzle 21 of the mounting head 2. FIGS. 9 and 10 show the tape feeder 82 alone. FIG. 9 is a side view and FIG.
Is a top view on the supply surface side.
Is provided with a positioning piece 84, a latching claw 85, and a detachable lever 86.
Is mounted on the tape feeder mounting table 80 while engaging with the positioning block 81, and then, when the attaching / detaching lever 86 is pressed down, the latch claw 85 is engaged with and held at a predetermined position of the tape feeder mounting table 80. 82A, 8
Each of the tape feeders 2B and 82C is a tape feeder 82, which is divided by a symbol to identify and indicate a mounting position. The tape feeder 82 has a component supply position 83, and the component supply positions 83A, 83B and 83C are respectively provided. Only the symbols are divided corresponding to the tape feeders 82A, 82B, 82C.

FIGS. 3 and 4 show the supply position confirmation device 52 alone. FIG. 3 is a side view, and FIG. 4 is a top view on the recognition surface side. 54, latch pawls 55, and a detachable lever 56.
6, the positioning piece 54 is placed on the tape feeder mounting table 80 while being engaged with the positioning block 81,
Subsequently, when the attachment / detachment lever 56 is pressed down, the latch pawl 55
Are engaged with and held at predetermined locations on the tape feeder mounting table 80. The supply position checker 52 has the same configuration and dimensions as the tape feeder 82, but the tape feeder 8
2 does not have an electronic component supply function, that is, has the same configuration as the tape feeder 82 and has a positioning and holding function with respect to the tape feeder mounting table 80, and confirms a supply position instead of the component supply position 83 of the tape feeder 82. The device 52 is provided with a supply position recognition hole 53. For this purpose, the cylindrical body 51 is fixed to the upper surface of the supply position checker 52. The upper surface of the cylindrical body 51 is flat and the supply position recognition hole 53 is formed. Is installed at the center of the cylindrical body 51,
The difference between the plane on the upper surface of the cylindrical body 51 and the supply position recognition hole 53 can be identified by recognition with a CCD camera described later.

FIG. 1 and FIG. 2 show a configuration in which a component supply position checking device is mounted on an electronic component mounting device. One of a plurality of mounting head mounting seats 11 provided on a peripheral portion of an index table 1 is specified and selected. By specifying the mounting head mounting seat 11 in advance, it is possible to prevent a variation occurring when an arbitrary mounting head mounting seat 11 is selected, and to replace the mounting head 2 of the mounting head mounting seat 11 thus specified. The camera head 30 is mounted, while the supply position checker 52 is mounted on the tape feeder mounting table 80 in place of the tape feeder 82. In FIG. 2, the angle position 13 at which the camera head 30 intermittently moves and stops by the index table 1 FIG. 14 shows a state in which the supply position confirmation devices 52A, 52B, and 52C are mounted on the tape feeder mounting table 80, Meraheddo 30 CCD camera 32
A, 32B, and 32C are provided. As shown in the figure, the supply position confirmation devices 52A, 52B, and 52C are convenient because three supply position confirmation devices 52A, 52B, and 52C can be simultaneously recognized and mounted. Also supply position checker 52
However, the supply position checker 52 is provided with a supply position recognition hole 53, but is provided with a symbol corresponding to the supply position checker 52A, 52B, 52C. Only the recognition holes 53A, 53B and 53C are separated.

FIGS. 5 and 6 show preparations required before the camera head 30 is mounted on the mounting head mounting seat 11. The preparation is carried out by mounting the CCD cameras 32A, 3A on the camera holder 31. FIG.
Assembling 2B, 32C and master gauge 40
To set recognition criteria for the CCD cameras 32A, 32B, and 32C. First, the CCD camera 32
A, 32B, and 32C are held by a holding plate 34.
Reference numeral 4 denotes a combination of three divided portions of 34A, 34B, and 34C by bolting.
5B, 35C, and CCD cameras 32A, 32B,
CCD camera 32A, 32B, 3 holding 32C
Hole 3 provided in camera holder 31 for fixing holding plate 34 holding 2C to camera holder 31 with a plurality of bolts 37
3A, 33B, 33C are connected to CCD cameras 32A, 32B,
The camera head 30 is completed by fixing the CCD cameras 32A, 32B, 32C to the camera holder 31 through which the upper part of 32C penetrates. The master gauge 40 has a camera head mounting seat 41 at an upper part and a flat part 42 and position checking holes 43A, 43B, 43C at a lower part. In FIG. 5, the position checking holes 43A, 43C are seen to be overlapped. The camera head 30 is fixed to the seat 41 with a plurality of bolts 44. The camera head mounting seat 41 has a key groove and the key 36 on the camera head 30 side is fitted. The position of the camera head mounting seat 41 of the master gauge 40 is confirmed. Hole 43A,
The dimensions and positional relationship between 43B and 43C are the same as the mounting head mounting seat 11 in the index table 1 and the supply position recognition hole 53 of the supply position checker 52 mounted on the tape feeder mounting table. When the supply position confirmation devices 52A, 52B, and 52C that separately indicate the symbols of the supply position confirmation device 52 are mounted, the supply position recognition holes 53A and 53B that separately display the symbols of the supply position recognition holes 53. , 53C, and has a desirable positional relationship accuracy. The flat portion 42 has the same positional relationship as the upper surface of the cylindrical body 51 of the supply position confirmer 52. With the camera head 30 fixed to the camera head mounting seat 41, the CCD cameras 32A, 32B, and 32C are connected to the image processing circuit of the electronic component mounting apparatus. Connected to each of the CCD camera 3
Position confirmation holes 43 corresponding to 2A, 32B and 32C respectively
A, 43B, 43C, CCD camera 32A,
The position confirmation holes 43A and 4 are provided in the visual fields of 32B and 32C, respectively.
The difference between the plane portion 42 and the position confirmation holes 43A, 43B, 43C in which the respective images of 3B, 43C are recognized is identified, and the positions of the position confirmation holes 43A, 43B, 43C in each field of view are stored in the image processing circuit. Thus, the CCD cameras 32A, 32B, 32C of the camera head 30 are connected to the position confirmation holes 43A, 43B, 4 in the master gauge 40.
This means that the position is recognized and stored with reference to the position of 3C.

Next, confirmation and adjustment by the component supply position confirmation device in the above-described embodiment will be described. Figure 5 at the beginning
The camera head 30 is attached to the master gauge 40 according to the description of FIG. 6 and FIG. 6, and the positions of the position confirmation holes 43A, 43B, 43C in the fields of view of the CCD cameras 32A, 32B, 32C of the camera head 30 are recognized and image processing is performed. Store it in the circuit. Subsequently, one of the mounting head mounting seats 11 of the index table 1 is specified and selected according to the description of FIGS. 1 and 2, and the camera head 30 detached from the master gauge 40 to the mounting head mounting seat 11 thus specified. Attach. On the other hand, when the electronic component supply position of the tape feeder is confirmed and the angular position 13 of the tape feeder mounting base 80 to be adjusted is determined, the angular position 13 is determined.
In place of the three tape feeders 82 corresponding to one positioning block 81 in FIG.
When the symbols are separately shown, three supply position checkers 52A, 52B, and 52C are mounted together.
Correspondingly, the supply position recognition holes 53A, 53B, 53C are recognized in the field of view of each of the CCD cameras 32A, 32B, 32C of the camera head 30.
A, 52B, and 52C on which the tape feeder mounting table 80 to check and adjust the electronic component supply position of the tape feeder.
If the angle position 13 is not the same or the angle position 13 to be mounted is changed, the index table 1 is rotated intermittently and the camera head 30
3, the supply position recognition holes 53A, 53B,
53C is a CCD camera 32A, 32 of the camera head 30.
B and 32C are recognized by the respective visual fields and sent to the image processing circuit. The image processing circuit includes CCD cameras 32A, 32B and 32C.
C Recognize and store the positions of the position confirmation holes 43A, 43B, 43C in the master gauge 40 in each field of view as a reference, and compare them. Then, supply position recognition holes 53A, 5B.
The difference between the positions of 3B and 53C is displayed as compared with the reference.
The position of the positioning block 81 is adjusted so that the positions of B and 53C are within a predetermined numerical value (for example, ± 0.05 mm). The position of the positioning block 81 can be adjusted by loosening the bolt 89. Supply position checker 52 previously mounted on tape feeder mounting table 80
The attachment / detachment lever 56 of each of A, 52B, and 52C (the attachment / detachment levers 56A, 56B, and 56C are separately shown) is lifted to release the holding.

With respect to the component supply section 8 of the electronic component mounting apparatus, three supply position confirmation devices 52A, 52B, and 52C are mounted together in the order of thirteen angular positions (for example, 20 in the number of the positioning blocks 81). 52A, 52B, 52
The C supply position recognition holes 53A, 53B, and 53C are recognized in the respective visual fields of the CCD cameras 32A, 32B, and 32C, and the image processing circuit displays the position in comparison with a reference. The above-described confirmation and adjustment can be repeated to complete the entire angular position 13 of the component supply unit 8 of the electronic component mounting apparatus.

[0015]

As described above, according to the component supply position confirmation apparatus of the present invention, the supply position confirmation device having the same positioning and holding mechanism as the tape feeder with respect to the tape feeder mounting table is used. The electronic component supply position directly reflects in an ideal state as the supply position recognition hole of the supply position checker. Then, the camera head is attached to the mounting head mounting seat of the index table, and the supply position recognition hole is imaged. The position is recognized, and therefore, it is necessary to move the shaft provided on the conventional jig A up and down to check the entry into the hole provided on the jig B, and to require the skill required to rely on human touch. In addition, since the comparison result is displayed based on the position of the position confirmation hole in the master gauge previously stored in the image processing circuit, the additional information included in the conventional jigs A and B is displayed. It is possible to avoid the effects of errors (for example, the tolerance of fitting between the shaft and the hole). Also, there is no variation between people (for example, confirmation work relying on touch). This makes it possible to improve the performance of the electronic component mounting apparatus and improve the operation rate.

[Brief description of the drawings]

FIG. 1 shows a tape feeder mounting table and a device for checking a component supply position as viewed from the side.

FIG. 2 shows a tape feeder mounting table and a device for checking a component supply position as viewed from above.

FIG. 3 shows a single supply position checker as viewed from the side.

FIG. 4 shows a single supply position checker as viewed from above.

FIG. 5 shows a camera head attached to a master gauge as viewed from the side.

FIG. 6 shows a camera head attached to a master gauge viewed from above.

FIG. 7 shows the tape feeder mounting table, the tape feeder, and the mounting head from the side.

FIG. 8 shows a tape feeder mounting table, a tape feeder, and a mounting head from above.

FIG. 9 shows a single tape feeder as viewed from the side.

FIG. 10 shows a single tape feeder as viewed from above.

FIG. 11 is a perspective view of an electronic component mounting apparatus shown as an example.

FIG. 12 shows a conventional component supply position confirmation device viewed from the side.

FIG. 13 shows a conventional component supply position confirmation device viewed from above.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Index table 2 Mounting head 3 XY table 4 Main body stand 5 Substrate mounting part 8 Component supply part 11 Mounting head mounting seat 13 Angular position where a mounting head moves intermittently and stops. 21 Component Suction Nozzle 30 Camera Head 31 Camera Holder 32A, 32B, 32C CCD Camera 40 Master Gauge 41 Camera Head Mounting Seat 43A, 43B, 43C Position Confirmation Hole 51 Cylindrical Body 52 Supply Position Confirmer 52A, 52B, 52C Supply position checker 53 supply position recognition hole 53A, 53B, 53C supply position recognition hole 54 separately indicating a symbol 54 positioning piece 55 latching claw 56 detachable lever 80 tape feeder mounting table 81 positioning block 82 tape feeder 82A, 82B, 82C Tape feeder 83 with symbols separated 83 Parts supply position 83A, 83B, 83C Parts supply position with symbols separated

Claims (2)

[Claims] 1. A supply position checker provided with a supply position recognition hole in place of a tape feeder on a tape feeder mounting base, in which a camera head is mounted instead of a mount head on a mounting head mounting seat provided on a peripheral portion of an index table. The camera head is mounted on the camera head and connected to an image processing circuit to image the supply position recognition hole, the image processing circuit image the supply position recognition hole with the reference position and the camera stored in advance. Compare with the recognized position,
A component supply position confirmation device, wherein a difference between the reference position and a position at which the supply position recognition hole is imaged and recognized is displayed. 2. The master gauge (40) includes a camera head mounting seat (41) at an upper part and a flat part (42) and a position confirmation hole (43A, 43B, 43C) at a lower part. ), A camera head (30) is fixed, and the position confirmation holes (43A, 43B, 43C) are imaged by cameras (32A, 32B, 32C) provided in the camera head (30) and connected to an image processing circuit. 2. The device according to claim 1, wherein the image processing circuit recognizes and stores the position of the position confirmation hole (43A, 43B, 43C) in the master gauge (40) as a reference.