KR0137366B1 - Assembling apparatus using back-up pins for supporting printed circuit board - Google Patents

Abstract

The printed board assembly includes a mounting table on which a printed board is supported by a backup pin held on a substrate base. The mounting table is movable in the X direction and the mounting head for mounting the electronic component on the printed board is movable in the Y direction. A backup pin stocker is provided near the substrate base that stores unused spare backup pins. The replacement means is attached to the mounting head so as to be movable together with the mounting head between the substrate base and the backup pin stocker. The backup pins stored in the stocker can be switched by the exchange means.

Description

Printed Board Assembly Device

1 is a plan view of a component mounting apparatus to which the present invention is applied.

2 is a front view of the apparatus.

3 is a perspective view of the device.

4 is a perspective view showing an X table portion.

5 is a perspective view of an X table portion in which a transmitted light sensor detects a backup pin.

6 is a front view of the X table portion in which the fixed chute rises.

7 is a front view of the X table portion in which the fixed chute is lowered.

8 is a perspective view of an X table portion in which a B / P exchange unit is drawn.

9 to 11 are side views illustrating a process in which a fixed chute transports and positions a substrate.

12 to 14 are cross-sectional views of the process of positioning the printed board in the substrate transporting direction.

Fig. 15 is a side view of the B / P exchange unit.

16 is a front view of a B / P exchange unit.

Fig. 17 is a sectional view of the silky chuck from the front.

Fig. 18 is a sectional view of the broken side of the silky chuck.

Fig. 19 is a sectional view of the silky chuck from the front.

20 is a front view of the periphery of the silky chuck of the B / P exchange unit.

FIG. 21 is a view seen from the arrow A-A 'in FIG. 20; FIG.

Fig. 22 is a control block diagram for carrying out moving stacking of a backup pin.

23 to 38 illustrate a process of exchanging a backup pin.

* Explanation of symbols for the main parts of the drawings

1: Component mounting device 3: X table part

5: Y head 8: printed circuit board

10: expectation 11: linear guide for table movement

12X Table 13: Nut 1

14: X table motor 15: X ball screw

17: substrate base 18: backup pin

19: Opening opening 22: Backup pin stalker

23: Storage opening 65: Mounting head

68: Nut 269: Ball screw for the head

70: head drive motor 71: head linear guide

73: backup pin replacement unit 74: slide unit

75: Guide rod 76: Silky chuck

80: Click Chuck 81: Click Chuck

The present invention relates to a printed circuit board assembling apparatus which performs a predetermined operation on a printed circuit board supported by a backup pin, which is freely detachable at an arbitrary position in accordance with the type of the printed board of the backup pin placement-array installation-table. The prior art in the same type of printed circuit board assembly is disclosed in Japanese Patent Laid-Open No. 59-29492.

The back-up pin disclosed here was conventionally replaced by hand.

However, the above-mentioned prior art has a drawback that it is very troublesome and expensive for an operator because it is exchanged by manual labor. Therefore, an object of the present invention is to reduce the width of such an operator.

For this reason, the present invention provides a printed circuit board assembling apparatus for performing a predetermined operation on a printed circuit board supported by a back-up pin that is freely attached to or detached from an arbitrary position in accordance with the printed board type of the backup-pin discharge table. It is possible to move relatively between the storage table and the mounting table and the storage table for disposing and storing spare backup pins that are not used in the table. The backup pins provided on both tables can be switched according to the type of printed board. It is a means of exchange.

The exchange means makes a relative movement between the backup pin excretion table and the storage table, and switches the backup pins disposed on the satisfactory table in accordance with the type of the printed board.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1 thru | or FIG. 3, (1) is a component mounting apparatus as a printed circuit board assembly apparatus which applied this invention. (2) is a pair of supply conveyor, (3) is an X table part, (4) is a pair of discharge conveyor. (5) is a Y head part, (6) is a tape thunder which supplies the chip parts which are not shown in the tape. 7 is a nozzle accommodating part.

The supply conveyor 2 conveys and transports the printed board 9 and supplies the board 8 to the X table 3, and the width of the conveyor can be changed by the size of the printed board 8. Do. The discharge conveyor 4 conveys and transports the printed board 8 discharged from the X table portion 3, and the conveyor width can be changed compared with the size of the printed board 8.

The said X table part 3 is demonstrated in detail.

4, 5 and 8, reference numeral 10 denotes a base, and numerals 11 and 11 are linear guides for moving a table provided on the base 10. In FIG. Reference numeral 12 denotes an X table which is guided by the linear guides 11 and 11 for table movement to move in the X direction, and a nut 1 13 is attached to the lower portion of the X table 12.

14 is an X table motor attached to the base 10, and rotates the X ball screw 15. As shown in FIG. The ball screw 15 is fitted to the nut 1 (13). When the X ball screw 15 is rotated by the X table motor 14, the X table 12 moves to the linear guide 11 for moving the table. Move on to (11). 17 is a board | substrate base attached to the X table 12, and the opening opening 19 in which the back-up pin 18 was detachably detached is provided over the whole surface. The backup pin 18 has a collar 20 larger than the aperture of the opening 19 of the substrate base 17 as shown in FIGS. 12, 20, and 24 to 38. It is installed at a predetermined distance from the front end of the).

Openings 19 and 19 of the substrate base 17. Back-up pins 18, 18 disposed on the back plate; Silver collar 20, 20... It is supported by the substrate base 17, and the height of the upper end surface becomes constant for each pin, and supports the printed board 8. As shown in FIG. In addition, the shaft diameter portion 21 is formed near the upper end of the backup pin 18 as shown in FIG. The length of the backup pin 18 (the distance from the color 20 to the upper end) can be different depending on the thickness of the substrate, but the position of the shaft diameter portion 21 is independent of the length of the backup pin 18. It is at the same distance than the collar 20. 22 is a backup pin stocker (hereinafter referred to as a B / P stocker) attached adjacent to the X table 12, and a plurality of openings 23 for detachably removing and storing the backup pin 18 are provided. The area to be stored is divided according to the type of the backup pin 18. The area | region accommodated is divided according to the kind of B / P stocker 22. As shown in FIG. The top surface of the B / P stocker 22 is almost the same height as the top surface of the substrate base 17. The B / P stocker 22 may provide a region which does not support the printed board 8 on the substrate base 17, and may use this region as the B / P stocker 22.

In Figs. 4 to 8, reference numeral 25 denotes a fixed chute provided with lifting pins 26 at the lower part, and reference numeral 27 denotes a chute up and down cylinder provided on the base 10. Reference numeral 28 denotes a guide body attached to the X table 12, and reference numeral 29 denotes a sliding pin for sliding up and down the guide body 28. This sliding pin 29 is attached to the fixed chute 25 via the attachment piece 30.

As shown in FIG. 6 and FIG. 7, the X table 12 is guided and moved by the linear guide 11 for table movement, and the lifting pin 26 is located above the chute upper and lower cylinders 27. As shown in FIG. When the cylinder 27 moves up and down, the fixed chute 25 is guided to the guide body 28 to move up and down. Reference numeral 31 denotes a support plate, and vertical movement is performed by the same structure as that in the case of the fixed chute 25 shown in FIGS. 6 and 7. The vertical movement of the fixed chute 25 and the support plate 31 is performed at the same height.

(32) (32) is a pair of linear guides for movable chutes hypothesized between the fixed chute (25) and the support plate (31), and (33) is guided and moved by the linear guides (32) and (32). It is an operation suit. 34 is a shoe width ball screw constructed between the fixed chute 25 and the support plate 31, and is driven by the chute movement motor 35 to rotate and fit the ball screw 34. The movable chute 33 is moved through a nut (not shown) attached to the lower movable chute 33.

4, 5, 8, and 12 to 14, reference numeral 37 denotes a linear guide attached to the fixed chute 25, and 38 denotes a linear guide 37 according to the linear guide 37. It is a clamp block which has the movable body 39 which moves up and down. 40 is a cylinder for clamping, is attached to the fixed chute 25, and moves the clamp block 38 up and down along the linear guide 37. As shown in FIG.

9 to 14, reference numeral 43 denotes a drive pulley driven by a drive motor (not shown) attached to the fixed chute 25. Is a clamp pulley attached to the clamp block 38. 45, drive pulley 1 (43) and clamp pulley (44) (44). It is a fixed chute belt attached tightly to and driven by a drive pulley 1 (43) driven by a drive motor (not shown).

4, 5, 8, and 12 to 14, reference numeral 46 denotes a drive pulley 2 attached to the movable chute 32 to be driven by a drive motor (not shown). 47 is a driven pulley attached to the movable chute 33. 48 is a movable chute belt, and the drive pulley 46 and the driven pulley 47, 47. Tightly attached to and driven by drive pulley 2 (46).

The fixed chute pulley 45 and the movable chute belt 48 are driven by the drive pulley 1 43 and the drive pulley 2 46 to carry and transport the printed board 8. 50 is a stopper pin and is stopped by being caught by the printed board 8 conveyed and conveyed to the belts 45 and 48.

When the stopper pin 50 discharges the printed board 8, the stopper pin 50 is lowered by a drive source (not shown) to release the printed board 8. 51 is a press block which rotates around the support shaft 1 52 provided in the movable chute 33, and is provided with several press rollers 53. As shown in FIG. 54 is a pressure block cylinder and is attached to the movable chute 33, and pushes up the pushing roller 55 provided in the lower end of the pressure block 51 to rotate the pressure block 51 in a counterclockwise direction. It is to let.

That is, after the printed circuit board 8 is transported to the belts 45 and 48 to be caught and stopped by the stopper pin 50, as shown in FIG. 6 by the driving of the chute upper and lower cylinders 27. Similarly, the fixed chute 25 and the movable chute 33, which have been raised to the same height as the supply conveyor 2 and the discharge conveyor 4, are shown in FIG. 7 by the lowering of the chute upper and lower cylinders 27. As described above, the attachment piece 30 is lowered until it comes in contact with the guide body 28. For this reason, the printed board 8 on the said belt 45 and 48 is pushed up by the backup pin 18, and it is located in the height which the pressure roller 53 can contact.

In this case, the pressure block cylinder 54 is raised, and the pressure roller 53 pushes the printed circuit board 8 to the chute surface 56 of the fixed chute 25 to be in the state of FIG. 13. The upper wall 1 57 as shown in FIG. 12 is formed at the upper end of the schut surface 56 of the fixed chute 21, and the cramp cylinder 40 is clamped in the state shown in FIG. ), The clamp pulley 44 attached to the clamp block 38 pushes the belt 45 up to the height H as shown in FIG. 1, and the printed circuit board 8 of the fixed chute 25 The upper wall 57 and the fixed chute belt 45 are sandwiched and fixed by pressure.

The notch part 58 is provided in the chute surface 1 56 of the fixed chute 25, and it does not touch the fixed chute 25 when the clamp pulley 44 raises. Since 45 is an elastic body, it absorbs even if there is an unevenness | corrugation in the board | substrate 8, or the board | substrate thickness varies. Reference numeral 59 is an upper wall 2 provided on the upper end of the movable chute 32 to prevent the printed board 8 from moving upward.

In FIG. 4 and FIG. 5, 60 detects the presence or absence of obstacles, such as the backup pin 18 attached to the both ends of the side by which the movable chute belt 48 of the movable chute 33 is attached. A permeable light sensor, which is attached to the upstream side of the movable chute 33 and to the light receiver 61 for transmitting the light beams and to the light receiver 62 attached to the downstream side and for receiving the light beams of the light projector 61; It is formed by.

The chute width ball screw 34 is rotated in the state where the fixed chute 25, the support plate 31, and the movable chute 33 are lowered, and the movable chute 33 of the fixed chute 25 When the backup pin 18 stands as an obstacle as shown in FIG. 5 when moving to the size of the printed circuit board 8 in the direction, the backup pin 18 blocks the light beam of the light projector 61. Therefore, the light receiver 62 does not receive the light beam, and the permeation light sensor 60 detects the backup pin 18. Then, the chute movement motor 35 stops the drive of the said ball screw 34, the movement of the movable chute 33 is stopped, and the high light 63 turns on. In addition, the permeation optical sensor 60 is provided outside the movable chute 33 to detect obstacles such as the backup pin 18 when the movable chute 33 moves in the direction of the support plate 31. It may be.

Therefore, when the size of the printed circuit board 8 is changed by the pitching optical sensor 60 to change the width of the chute, the movable chute 33 is maintained even if the backup pin 18 remains within the moving range of the movable chute 33. The collision with the backup pin 18 can be prevented.

Detection in the chute movement range of obstacles such as the backup pin 18 can be performed using a recognition camera from above.

Next, the Y head portion 5 will be described in detail.

1 and 2, three (65) and 66 (66) mountings are provided with exchangeable three extraction nozzles (67) for adsorbing and extracting chip components (not shown) from the tape feeder (6). Head, and is attached with ball screws 69 and 69 for the head via nuts 2 (68) and (68). 70 and 70 are head drive motors for rotating the ball screws 69 and 69, and the motors 70 and 70 are mounted by rotating the ball screws 69 and 69. The heads 65 and 66 move in the Y direction. The 71, 71, 71 and 71 are head linear guides that support the mounting heads 65 and 66 and guide the movement in the Y direction. 64 and 64 are substrate recognition cameras attached downward to the mounting heads 65 and 66, and are fixed to the fixed chute belt 45 and the upper wall 1 (57) on the X table 12 to be fixed by pressing. The position of the printed board 8 is recognized by recognizing the plurality of positioning marks attached to the printed board 8. Therefore, the printed circuit board 8 only needs to be fixed so as not to move even if it is not positioned at the correct position. 72 and 72 are part recognition cameras, which are not shown, adsorbed by the extraction nozzle 67 and adsorbed by the nozzle 67 positioned upward by the Y-direction movement of the mounting heads 65 and 66. Recognize chip components.

After the recognition cameras 72 and 72 perform recognition, the mounting heads 65 and 66 move up to the X table 12 again. The extraction nozzle 67 which adsorb | sucked a chip component by the movement of the said X table 12 in the X direction, and the movement of the mounting head 65 and 66 in the Y direction is fixed on the X table 12. And backup pins 18, 18. It is located on the predetermined position of the printed circuit board 8 supported by the, and the said component is mounted. The mounting heads 65 and 66 can be positioned on the nozzle housing 7 by the Y-direction movement, whereby the extraction nozzles 67 can be replaced.

Reference numeral 73 denotes a backup pin exchange unit (hereinafter referred to as a B / P exchange unit) attached to the mounting head 65, and is moved to any position on the X table 12 and the B / P stocker 22 to back up. The pin 18 is replaced. The replacement of the backup pin 18 is done as shown in FIGS. 8 and 24 to 39.

Since the B / P exchange unit 73 is attached to the mounting head 65, only the movement in the Y direction is performed, but when the B / P exchange unit 73 itself also moves in the X direction and the Y direction, the B / P stocker 22 ) May be fixedly installed at a place other than the X table 12 within the moving range of the B / P exchange unit 73, and not at the X table 12.

On the contrary, when the substrate base 17 and the B / P stocker 22 are attached to the table moving in the XY direction, the B / P exchange unit 73 is fixed at a predetermined position such that it cannot move in the XY direction. You may be.

Next, the B / P exchange unit 73 will be described in detail with reference to FIGS. 15 to 21. FIG.

74 is a slide unit, is guided by a pair of guide rods 75 and 75 attached to the mounting head 65, and reciprocates up and down by compressed air. 76 is a silky chuck attached to the slide unit 74 via the attachment plate 77. Reference numeral 78 denotes an upper limit sensor for detecting that the slide unit 74 has risen to the upper limit, and 79 denotes a lower limit sensor for detecting that the slide unit 74 has fallen to the lower limit.

Reference numerals 80 and 80 are chuck clicks for holding the backup pins 18 and are attached to the pinkers 82 and 82 at the tip of the silky chuck 76. Reference numeral 83 is a silky chuck main body which becomes the main body of the silky chuck 76. (84) and (84) are needle pins installed on the pinkers (82) and (82), and (85) and (85) are rotations for rotating the support shafts (86) and (86) installed on the silky chuck main body (83) to the support points. It is a moving lever. Reference numeral 87 is a spring that is engaged with the inside of the pinkers 82 and 82 and added to open both the pinkers 82 and 82.

88 and 88 are pistons that move up and down inside the cavity 89, and are pressurized by the compressed air supplied from the compressed air intake port 90 to descend. Reference numeral 91 is a packing for sealing the compressed air to prevent leakage.

When the piston 88 is pressed downward, the lower end of the piston 88 is engaged with the rotation shift levers 85 and 85 and rotates the rotation shift levers 85 and 85 inward. Rotation movement levers 85 and 85 which rotate inwardly engage the needle pins 84 and 84 and close both pinkers 82 and 82 against the springs 87.

As a result, the chuck clicks 80 and 81 can be closed to grasp the backup pin 18. When the air pressure supplied from the compressed air inlet 90 decreases, the finger 82 and 82 are opened by pushing the piston 88 through the rotation movement levers 85 and 85 by the biased pressure of the spring 87. Chuck clicks 80 and 81 are opened.

On the other hand, the chuck click 80 is formed with a convex portion 92, and the surface abutting with the backup pin 18 of the convex portion 92 is shaped to fit to the shaft diameter portion 21 as shown in FIG. have. The other side of the chuck click 81 is provided with a triangular groove 93 in the longitudinal direction as shown in FIG. 21, and when holding the backup pin 18, two surfaces forming the groove 93 are two pins 18. As shown in FIG. A large diameter portion of the abuts.

As the chuck clicks 80 and 81 come into contact, the chuck click 80 fits into the shaft diameter portion 21 of the backup pin 18, and the chuck click 81 abuts on two sides with a large diameter portion. Hold this backup pin 18. This holding operation is performed at the position where the slide unit 74 descends to the lower limit.

In this state, as the slide unit 74 moves upward, the two backup pins 18 are lifted up. When the backup pin 18 is lifted up, the backup pin 18 is firmly supported by the chuck clicks 80 and 81 so as not to move relative to the chuck clocks 80 and 81, but a large force is required when lifting it. Even if the position of the chuck clicks 80 and 81 with respect to the backup pin 18 is shifted, the upper surface of the convex portion 92 of the chuck click 80 is below the large diameter portion above the backup pin 18. The backing pin 18 can be raised against the surface.

Reference numeral 94 is a chuck miss sensor, and the chuck clicks 80 and 81 perform a chuck miss, and the back pin 18 is provided with a recess 95. However, the chuck clicks 80 and 81 are backup pins. It is to be pulled out so that only the convex part 92 does not touch the chuck click 81 when it closes without holding | maintenance (18), and when the chuck miss sensor 94 detects a chuck miss, the chuck clicks to the stroke judged as a chuck miss. 80 and 81 are provided for closing.

In addition, since the lower limit position of the slide unit 74 is always constant, the stop position when the chuck clicks 80 and 81 are lowered is also constant. For this reason, although the height of the upper surface of the B / P stocker 22 and the upper surface of the board | substrate base 17 is the same as mentioned above, if it is possible to avoid the stop position when the slide unit 74 descends, B The height position of the upper surface of the / P stocker 22 may be different from that of the substrate base 17.

(96) shown in FIGS. 4 and 8 is a backup pin recovery box (hereinafter referred to as a B / P recovery box), and the backup pins 18 held by the chuck clicks 80 and 81 have a substrate base. This backup pin 18 is recovered when it is not disposed on the 17 or the B / P stocker 22.

In Fig. 22, reference numeral 97 denotes a CPU and controls the component mounting of the component mounting apparatus 1 based on various kinds of information. Reference numeral 98 denotes a RAM, and NC data in which the size of the substrate and the length of the backup pin 18 to be mounted on the substrate base 17 and the XY coordinates of the mounting position are displayed according to the type of the front substrate 8. Remember Reference numeral 99 denotes an operation unit for inputting various data such as the above NC data by each key operation.

Reference numeral 100 denotes an X table motor driver for driving the X table motor 14, and reference numeral 101 denotes a head drive motor driver for driving the head drive motor 70. Reference numeral 102 denotes a compressed air supply unit for the slide unit for driving the vertical movement of the slide unit 74. Reference numeral 103 denotes a compressed air supply unit for the silky chuck for driving opening and closing of the chuck clicks 80 and 81 by the silky chuck 76. Numeral 104 is a chute motor driving unit for driving the chute movement motor 35. 105 is an interface.

With the above configuration, the following operation will be described.

The component mounting apparatus 1 is a printed circuit board 8 which attempts to mount these components when it tries to mount components of the printed circuit board 8 different from the printed board 8 which had been mounting components until now. ), The backup pin 18 is replaced, and the movable chute 33 is moved.

The conveyor width of the supply conveyor 2 and the discharge conveyor 4 is also changed. These are controlled by the CPU 97 based on the NC data input from the operation unit 99 and stored in the RAM 98. These operations are also performed in the state where the chute upper and lower cylinders 27 are lowered, that is, the stationary chute 25 and the movable chute 33 are lowered in order to save preparation time.

First, in the replacement operation of the backup pin, the following operation is performed when the backup pin 18 on the substrate base 17 is moved to the B / P stocker 22.

That is, the X table motor driving unit 100 is driven and the X table motor 14 rotates the X ball screw 15 to move the X table 12 to which the nut 1 (13) is attached to a pair of tables. It moves in the X direction according to the linear guides 11 and 11.

On the other hand, the mounting head 65 with the B / P exchange unit 73 is attached to the rotational movement of the ball screw 69 for the head by the head drive motor 70 driven by the head drive motor drive unit 101. It moves to the Y direction through the nut 268. In this way, the B / P exchange unit 73 is located on the backup pin 18 on the substrate base 17 as shown in FIG.

Thereafter, the slide unit 74 is lowered to the lower limit detected by the lower limit sensor 79 according to the guide rod 75 by the compressed air supplied by the compressed air supply unit 102 for the slide unit. It becomes

Here, when compressed air is supplied by the compressed air supply part 103 for the silky chuck from the compressed air inlet 90 in the silky chuck 76, the piston 88 lowers the cavity 89 so as to rotate the rotation lever 85. Rotates inward and the finger 82 is closed against the spring 89 via the needle pin 84.

As a result, the chuck clicks 80 and 81 attached to the finger 82 are closed, so that the convex portion 92 of the chuck click 80 abuts against the shaft diameter portion 21 of the backup pin 18, and the chuck clock The groove 93 of 81 is in contact with the portion of the large direct management so that the backup pin 18 is caught as shown in FIG.

With the chuck clicks 80 and 81 held by the backup pins 18, the slide unit 74 rises to the upper limit detected by the upper limit sensor 78, and the backup pins 18 are connected to the substrate base 17. Is drawn as in Fig. 26. Then, the X table motor 14 and the head drive motor 70 are rotated as described above, and the B / P exchange unit 73 holding the backup pin 18 is placed on the B / P stocker 22. The back-up pin 18 is positioned as shown in FIG. 27 on the storage opening 23 to be mounted next in the area for storing the corresponding back-up pin type.

Then, the slide unit 74 is lowered so that the backup pin 18 is mounted to the opening 23 as shown in FIG. 28, and the chuck clicks 80 and 81 are pressurized from the compressed air intake port. This fall causes the spring 87 to open and open as shown in FIG. 29.

Thereafter, the slide unit 74 rises as shown in FIG. 30, and the endless movement of the backup pin 18 from the substrate base 17 on the X table 12 to the B / P stocker 22 is completed.

Next, the case where the backup pin 18 of the kind used for the printed circuit board 8 which mounts components from the B / P stocker 22 forward is carried on the board | substrate base 17 is demonstrated.

For example, the B / P exchange unit 73 in the state of FIG. 30 has the X table motor 14 and the head on the backup pin 18 corresponding to the B / P stocker 22 as shown in FIG. It moves and stops by rotational conveyance of the drive motor 7. As shown in FIG. Then, the slide unit 74 descends to the lower limit as shown in FIG. 32 and the chuck clicks 80 and 81 are closed as shown in FIG. 33 to hold the backup pin 18.

Then, while holding the backup pin 18, the slide unit 74 rises as shown in FIG. 34, the B / P exchange unit 73 moves based on the NC data, and moves to the corresponding position on the substrate base 17. Stop at 35 degrees.

Thereafter, the slide unit 74 is lowered as shown in FIG. 36, and the backup pin 18 is attached to the opening 19, and the chuck clicks 80 and 81 are opened as shown in FIG. 37 and the slide unit 74 is opened. Increase as shown in FIG. In this way, moving stacking of the backup pin 18 from the B / P stocker 22 onto the substrate base 17 is performed.

Next, since the B / P exchange unit 73 replaces the next backup pin 18 disposed on the substrate base 17, the B / P exchange unit 73 moves on the backup pin 18, and performs the operation as described above. .

This operation is repeated while being controlled by the CPU 97 based on the NC data stored in the RAM 98, and the backup pins 18, 18 for supporting the printed board 8 for mounting the components therefrom. Is mounted. In addition, if the backup pins 18 mounted on the substrate base 17 and the backup pins 18 for supporting the next printed board 8 are the same, the backup pins extracted from the substrate base 17 are identical. It is also possible to mount it directly to the position where the board | substrate base 17 should be mounted, without moving 18 to the B / .P stocker 22.

In addition, the B / P exchange unit 73 moves between the substrate base 17 and the B / P stocker 22 without holding the backup pin 18. The B / P exchange unit 73 holds the backup pin 18 at only one side and moves to another foot. In some cases.

The movable chute 33 is moved in accordance with the size of the printed board 8 on which the back-up pin 18 is replaced and the component is mounted therefrom. The movable chute 33 can be moved simultaneously with the replacement of the backup pin 18 when the backup pin 18 in the moving range of the movable chute 33 is removed.

The movable chute 33 is moved by rotating the chute width ball screw 34 by the chute movement motor 35.

A nut (not shown) is fitted to the ball screw 34, and the movable chute 33 attached to the nut moves along the linear guide 32 for the movable chute.

If there is a residual portion of the backup pin 18 when the movable chute 33 is moving, and the light beam 62 of the light projector 61 is blocked and the light receiver 62 does not receive the light, the permeation light sensor 60 backs up. The pin 18 is detected, the rotational movement of the chute movement motor 35 is stopped, and the movement of the movable chute 33 is stopped.

At the same time, the high indicator 63 lights up. The backup pin 18 remains in some cases when the NC data is wrong, or only when the backup pin 18 is disposed at a place other than manually designated as NC data.

Thereafter, the worker who knows that there is an obstacle by the high light 63 removes the obstacle such as pulling out the backup pin 18. The movable chute 33 remains stationary even after removing the obstacle, and the operation is restarted by the operator operating the operation unit 99.

When the procedure change as described above is finished and the backup pin 18 and the movable chute 33 are adapted to the printed board 8 which performs the next component mounting as described above, the X table motor 14 rotates. It moves and the X table 12 moves along with the linear guide 11 for table movement, and it stops at the place where the lifting pin 26 is located just above the chute up-and-down cylinder 27. As shown in FIG. And when the chute up-and-down cylinder 27 moves upwards, this cylinder 27 will engage with the lifting pin 26, push it up, and the fixed chute 25 will be attached to this chute 25. The sliding pin 29 slides in the guide body 28 attached to the X table 12, and the slide pin 29 ascends along the guide body 28. As shown in FIG.

At this time, the support plate 31 also rises by the same structure, and the movable chute 33 also rises by this. In this way, the fixed chute 25 and the movable chute 33 are flush with the supply conveyor 2 and the discharge conveyor 4).

When the printed circuit board 8 is supplied to the component mounting apparatus 1 in this state, the supply conveyor 2 conveys and conveys this board | substrate 8, and the fixed chute 25 and the movable chute of the X table part 3 are carried out. To (33). The guided printed board 8 is mounted on the fixed chute belt 45 and the movable chute belt 48, and the belt 45 driven by the driving pulley 43 and the driving pulley 2 46, ( 48 is conveyed and transported.

When the printed circuit board 8 is conveyed and conveyed to a predetermined position and detected by a sensor (not shown), the rotational movements of the drive pulley 1 43 and the drive pulley 2 46 are started to decelerate. Then, the printed circuit board 8 conveyed and conveyed to the fixed chute belt 45 and the movable chute belt 48 which is decelerated is caught by the stripper pin 50 as shown in FIG. 10 to stop the movement.

The driving pulley 1 (43) and the driving pulley 2 (46) also follow, and the driving of the fixed chute belt (45) and movable chute belt (48) is stopped. At this time, the positional relationship between the printed board 8 and the backup pin 18 is as shown in FIG. After this, when the chute up-and-down cylinder 27 descends, the fixed chute 25 and the movable chute 33 descend, and are placed on both the fixed chute belt 45 and the movable chute belt 48. The printed circuit board 8 is also lowered. Then, as shown in FIG. 13, the printed circuit board 8 includes the backup pins 18, 18,. Will be supported.

At this time, the upper surface of the end portion of the printed board 8 is located at a position immediately in front of the upper wall 1 57 of the fixed chute 25 and the upper wall 2 59 of the movable chute 33.

Here, the pressure base lock cylinder 54 is moved upwards and the pressure block 51 is rotated in the counterclockwise direction in FIG. (53) pushes the printed circuit board 8 to the fixed chute 25 surface 1 (56).

Next, when the clamping cylinder 40 moves upward and pushes the movable body 39 along the linear guide 37, the clamp block 38 to which the movable body 39 is attached moves upward, and the clamp block 38 Through the clamping pulley 44 attached to the fixed pulley belt 45 which is tightly attached to the pulley 44, the printed board 8 is fixed as shown in FIGS. 11 and 14. It sticks to the upper wall 1 (57) of the chute 25. In this way, the printed circuit board 8 is fixed by positioning.

When the printed circuit board 8 is positioned and fixed on the X table 12, the head drive motor 70 rotates the ball screw 69 for the head, and the mounting head 65 through the nut 2 68, ( 66 is moved onto this printed board 8 according to the head linear guide 71.

The plurality of positioning marks attached to the printed board 8 by the X-direction movement and the Y-direction movement of the mounting heads 65 and 66 by the rotational movement of the X table motor 14 of the X table 12. Is recognized by the substrate recognition camera 64, and the position of the printed board 8 is recognized.

Thereafter, the mounting heads 65 and 66 move to the predetermined tape feeder 6 by the head drive motor 70 rotating the ball screw 69 for the head.

When the withdrawal exposure 67 attached to each of three mounting heads 65 and 66 pulls out the chip components not shown in the tape feeder 6, the mounting heads 65 and 66 become the X table part ( 3) moves by the rotational movement of the ball screw 69, 69 in the direction of | When each of the three extraction nozzles 67 attached to the fixing heads 65 and 66 passes over the recognition camera 72, each of the components adsorbed by the extraction nozzle 67 is transferred to this recognition camera ( 72).

Thereafter, the mounting heads 65 and 66 move on the X table portion 3.

Here, the correction is made based on the recognition result of both recognition cameras 64 and 72 so that the print nozzle 8 positioned and fixed to the X table 12 is positioned at the fixed position. The mounting heads 65 and 66 move and stop about the direction, and the X table 12 moves and stops by the X table motor 14 and the X ball screw 15 in the X direction.

Subsequently, the extraction nozzle 67 is performed by a nozzle rotating device (not shown) for correcting the θ angle of the chip components adsorbed on the basis of the recognition results of both recognition cameras 64 and 72. It is attached to the printed board 8. Each of the three extraction nozzles 67 moves to the predetermined position of the printed circuit board 8 as described above, and mounts the chip component to be adsorbed by correcting the θ angle of the chip component.

This component mounting operation is repeated.

When the mounting of the parts is completed, the clamping cylinder 40 is moved downward, the movable body 39 and the clamp block 38 are lowered according to the linear guide 37, and the fixed chute belt 45 is mounted on the printed circuit board 8. Release the pressurization. Again, the pressure block cylinder 54 is moved downward so that the pressure roller 55 releases the pressure on the fixed chute 25 of the printed board 8.

Then, the chute upper and lower cylinders 27 move upwards to engage and engage the lifting pins 26 located on the cylinders 27 by the movement of the X table 12, and push them up to fix the chute 25 ) And the movable chute 33 are moved upward along the guide body 28 and positioned at the same height as the discharge conveyor 4.

Thereafter, when the stopper pin 50 is lowered by a drive source (not shown) to release the printed board 8, the stopper pin 50 is rotated by the drive motor 1 (43) and the drive pulley 2 (46) by a drive motor (not shown). The fixed chute belt 45 and the movable chute belt 48 carry and transport the printed board 8, so that the discharge conveyor 4 carries a transport for discharging the delivered printed board 8.

Also, based on the NC data stored in the RAM 98, the CPU 97 stores the B / P exchange unit at a predetermined position on the substrate base 17 or the B / P stocker 22 as described above. 73, the backup pin 18 held by the chuck clicks 80 and 81 can be inserted into the opening 19 or the receiving opening 23 even when the slide unit 74 is lowered. In this case, the lower limit sensor 79 does not operate.

In this case, the CPU 97 raises the slide unit 74 and moves the B / P exchange unit 73 onto the B / P collection box 96 to remove the noise of the chuck clicks 80 and 81. The back-up pin 18 is released into the B / P recovery box 96.

The reason why the backup pin 18 could not be inserted is when the NC data is wrong and the back pin 18 is not moved correctly to the position of the opening 19 or the storage opening 23, or the backup pin 18 is bent. Etc., but the attachment state of the sensor 79 may be grasped after a predetermined time using, for example, a timer.

The backup pin 18 can be replaced manually without the automatic replacement by the X table 12, the B / P exchange unit 73, and the like.

In addition, even in the case of a component mounting apparatus in which the B / P replacement unit 73 is not installed, the B / P stocker 22 is attached to the X table 12, so that the backup pin 18 can be replaced by hand. It is convenient. In this case, the height position of the B / P stocker 22 does not have to be the same as the substrate base 17.

Further, the B / P stocker 22 may be fixed to an appropriate position on the base 10, for example, in the vicinity of the X table 12 without being attached to the X table 12. When the B / P stocker 22 is attached to the X table 12, the B / P stocker 22 may be located adjacent to the substrate base 17 no matter where the X table 12 is stopped. It is convenient to replace the backup pin 18 by hand. In addition, this embodiment is not limited to the component mounting apparatus 1, but the adhesive shaping | molding apparatus which makes the adhesive agent as a printed circuit board assembly apparatus to the printed circuit board 8, and the said paste which aims at the printed circuit board 8 is carried out. The same applies to screen printing apparatus.

As described above, the present invention can reduce the worker's width when disposing the backup pin for supporting the printed board.

Claims (1)

In the printed circuit board assembling apparatus which performs predetermined operation on the printed circuit board supported by the backup pin which detachably attached at arbitrary positions according to the kind of printed circuit board of the backup pin discharge table, It is used for support of the said printed circuit board. Exchange means for displacing and storing spare backup pins that are not provided, and for switching relative to the mounting table and the storage table, and for switching the backup pins disposed on both tables according to the type of printed board. The printed circuit board assembly apparatus characterized by the above-mentioned.