JPS61140412A - Device for supplying and discharging printed-circuit substrate - Google Patents

Abstract

PURPOSE:To provide a discharge and supply device which is simply constructed and capable of supplying and discharging a substrate on the same side by disposing a pair of substrate chucks face downward on both ends of a rotary shaft which are symmetrical and capable of freely elevating, and intermittently rotating in a 180-degree arc and elevating so that one chuck supports the substrate and the other chuck releases the substrate. CONSTITUTION:Chucks 26A, 26B are lowered by elevating mechanisms 34, 36, 38, 40 including an elevating cylinder for a printed-circuit substrate on a conveying apparatus 14. Subsequently, the substrate 110 is held by clicks 180, 184 of the chuck 26A. After that, the chucks 26A, 26B are lifted up by an elevating cylinder 44 and rotated in a 90-degree arc by a Geneva mechanism 58. At this time, the chuck 26A is changed to a lower position and the chuck 26B is changed to a higher position by oparation of a grooved cam 40. Subsequently, the chucks are further rotated in a 90-degree arc and then lowered. The chuck 26A releases the substrate 110 onto a rotary table 10, and the chuck 26B holds the next substrate. Thus, the substrates can be supplied and discharged on the same side in a simple and small-sized device.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a printed circuit board supply/discharge device for supplying and discharging printed circuit boards to and from devices such as devices for attaching electronic components to printed circuit boards.

A conventional technique disclosed in Japanese Patent Publication No. 5B-6317 discloses a method in which a printed circuit board before work is supplied from one side of the machine to a work machine that is supposed to perform some work such as attaching electronic parts to a printer l-n. , a printed circuit board supply/discharge device is described that discharges the printed circuit board after work to the same side. In this equipment, the loading device for loading printed circuit boards and the loading device for loading them out are arranged in a vertically overlapping manner, and the printed circuit board mounting/removal device removes the printed circuit boards from the printed circuit board support device of the working device. and rise,
At the same time as the printed circuit board is delivered to the unloading device, the unworked printed circuit board is received from the loading device, and the unworked printed circuit board is lowered and attached to the printed circuit board support device.

In this way, the printed circuit board can be fed from one side of the work equipment and discharged to the same side, so compared to the case where the printed circuit board is fed from one side of the work equipment and discharged from the opposite side, - The entire system including the discharge device can be configured compactly. In addition, since the carry-in device and the carry-out device are each provided for exclusive use, the printed circuit board mounting/removal device can hand over the finished printed circuit board to the transfer device, unlike when loading and unloading are carried out using a common conveyance device. After that, there is no need to wait until the printed circuit board is carried out and a printed circuit board to be worked on is carried in instead, and the printed circuit board can be supplied and discharged in a short time.

Problems to be Solved by the Invention However, if the carrying-in device and the carrying-out device are provided separately, the device becomes more complicated and costs inevitably increase.

The present invention is directed to a printed circuit board feeding system in which printed circuit boards are fed from one side of the working device and discharged to the same side.
This was done to solve the problem that the cost of the device increases if the time required for supply and discharge is reduced in the discharge device. .

Means for Solving the Problems In order to solve the above problems, the present invention provides a rotating member rotatable around an axis extending in the vertical direction, and a pair of arms from the rotating member rotates around the axis. The pair of arms are extended with a phase difference of 180 degrees, and board chucks for holding printed circuit boards are attached to the tips of the pair of arms, respectively, symmetrically with respect to the axis, and the rotating member is moved to a stopping position at least every half rotation. is connected to a rotational drive source through a Geneva mechanism, and when one of the pair of substrate chucks is located directly above the substrate support device when the rotating member is stopped, the other is located directly above the substrate transfer device. The substrate transport device is arranged so that the substrate is positioned at the same position, and the pair of substrate chucks are raised and lowered simultaneously in a direction parallel to the axis by a common lifting drive device.

In the printed circuit board supply/discharge device configured as described above, the pair of substrate chucks are lowered by the lifting drive device while being located directly above the substrate support device and the substrate transfer device, respectively. One substrate chuck holds the printed circuit board after being worked on the substrate support device, and the other substrate chuck holds the printed circuit board before being worked on the substrate transport device. Thereafter, each chuck raises the printed circuit board, and then the rotating member is rotated by the rotation drive source via the Geneva mechanism, so that the positions of the pair of printed circuit boards are exchanged. The board chuck that has removed the printed circuit board after work from the board support device is located on the board transport device, and the board chuck that has received the unworked printed circuit board from the board transport device is located directly above the board support device. It is. Therefore, by lowering the substrate chuck again by the elevating device, attachment of the printed circuit board to the support device before the operation and delivery of the printed circuit board to the conveyance device after the operation are performed at the same time.

That is, the printed circuit board feeding/discharging device according to the present invention performs mounting and removal of printed circuit boards in parallel, and on the board supporting device side, one board chuck removes and leaves the printed circuit board after work. Another board chuck arrives holding the unworked printed circuit board and attaches it to the board support device, and on the board transport equipment side, one board chuck holds the unworked printed circuit board from the board transport device. After receiving and leaving the board, another board chuck arrives holding the finished printed circuit board and transfers it to the board transfer device.

Effects of the Invention Therefore, although the board transport device carries out both loading and unloading, after the board mounting/removal device □ hands over the worked printed circuit board to the transport device, the worked printed circuit board is not transported. The cycle time of the board supply/discharge work does not become longer due to the time it takes for the printed circuit board to be removed and the unworked printed circuit board to be carried in instead, and for the board mounting/removal device to receive the unworked printed circuit board.

That is, according to the present invention, in a printed circuit board supply/discharge device that supplies printed circuit boards from one side of the working device and discharges them to the same side, the conveyance device can be used to load and unload printed circuit boards without sacrificing work efficiency. The device can be used for both purposes, and the cost of the device can be reduced.

Furthermore, in the printed circuit board supply/discharge device according to the present invention, the rotational motion and the vertical movement of the two circuit board chucks are respectively provided by a common rotational drive source and a common vertical drive device. This also simplifies the structure of the device, making it possible to reduce costs.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 shows a printed circuit board feeding/discharging device according to the present invention, in which an electronic component is attached to a printed circuit board.A component mounting device supplies a previous printed circuit board for component mounting, and also discharges a subsequent printed circuit board for component mounting. FIG.

In the figure, reference numeral 10 denotes a rotary table as a substrate support device provided in the device for mounting parts, and it can be rotated at any angle on a moving table (not shown) that can be moved in both directions of the final axis and the Y axis. There is. A printed circuit board supply/discharge device for supplying and discharging printed circuit boards to and from the rotary table 10 includes a circuit board mounting/removal device 12 and a circuit board transport device 14 .

The board attachment/removal device 12 includes a rotating shaft 20 as a rotating member rotatable around an axis extending in the vertical direction. This rotating shaft 20 is supported by a frame 22 so as not to be able to move in the axial direction, and a pair of arms 24A, 24B extend from the lower end of the frame 22 and rotate around the axis of the rotating shaft 20.
They are extended with a phase difference of 0 degrees. These arms 24A.

A substrate chuck 26A, a substrate chuck 26A, and a
26B is installed. One substrate chuck 26
The rotary table 10.B is positioned directly above the rotary table 10 in the state shown in FIG. The relative positions of the board mounting/removal device 12 and the board transport device 14 are determined.

The rotating shaft 20 is configured to be rotated by a rotational drive device 32, which will be described in detail later. Further, the chuck 26A is attached to the arm 24A so as to be movable up and down relative to the arm 24A via two rods 34 that slidably pass through the tip of the arm 24A. Cam follower 38 attached via
is engaged with the grooved cam 40. Substrate chuck 26
B is similarly attached to the arm 24B via the rod 34, and is engaged with the groove cam 40 via the bracket 36 and cam follower 38. The grooved cam 40 is provided on the outer circumferential surface of a sleeve 42 that is rotatably and axially slidably fitted to the rotating shaft 20, and is located on the right side in FIG. 1, that is, on the substrate transfer device 14 side. is the highest, and the left side, that is, the part located on the rotary table 10 side, is the lowest. therefore,
As the rotation shaft 20 rotates, the substrate chuck 26A.

When the substrate chuck 26B rotates, the substrate chuck 26A descends and the substrate chuck 26B rises. This is because the height of the rotary table 10 and the height of the substrate transfer device 14 are different, and this is a measure taken to cancel out the difference in height when the substrate chucks 26A and 26B are rotated. be.

The sleeve 42 has an elevating cylinder 44 connected to a connecting member 46.
As the sleeve 42 is raised and lowered along the rotating shaft 20 by the lifting cylinder 44, the substrate chucks 26A and 26B are simultaneously raised and lowered by the same distance, and each rotates with the substrate transport device 14. It is designed to be able to approach and separate from the table 10. That is, the lifting cylinder 44. Connecting member 46. 'Sleeve 42° groove cam 40. Cam follower 38. Bracket 36
゜Substrate chucks 26A and 26B are mounted using the elevating condo 34, etc.
A lifting drive device is constructed.

Note that, as shown in FIG. 2, two ronds 48 are provided upright on the connecting member 46, and these ronds 48 are guided by a guide 52 fixed to a mounting bracket 50 that attaches the elevating cylinder 44 to the frame 22. This prevents rotational moment from being applied to the piston rod of the lifting cylinder 44.

The rotary drive device 32 is shown enlarged in FIGS. 3 and 4. As is clear from these figures, the rotary drive device 3
2 rotates the rotating shaft 2o by 90 degrees via a Geneva mechanism 58 by an electric motor 56 serving as a rotational drive source. The prime mover 6 of the mechanism 58
4. prime mover 64
Two drive pins 66 are attached at 180 degree intervals to the outer periphery of the cylinder, and a locking wheel 68 with two cutouts on the cylindrical surface is provided at the center. On the other hand, a driven wheel 70 that constitutes the Geneva mechanism 58 together with the driving wheel 64 is provided with four radial grooves 72 that engage with the drive pin 66 and an arcuate notch 74 that engages with the locking wheel 68. There is. Therefore, when the prime mover 64 is rotated 180 degrees, the drive pin 6
6 fits into one of the radial grooves 72 to move the driven wheel 70 to 9.
The plane can be rotated by 0 degrees. As shown in FIG. 3, a dog 78 is attached to the shaft 76 of the prime mover 64, and two photoelectric switches 80 are provided around the shaft 76 at 180 degree intervals. The moving vehicle 64 is 18
When the 0 degree rotation reaches the position shown in FIG. 4, the photoelectric switch 80 detects the dog 78 and stops the motor 56. In this state, the driven vehicle 70
The notch 74 engages with the locking wheel 68 of the prime mover 64, so that even if the stopping position of the prime mover 64 changes slightly, the driven wheel 70 will be stopped at an accurate position, and even if an external force is applied, the driven vehicle 70 will remain at that position. It never rotates.

As shown in FIG.
Printed circuit board 1 with no electronic components attached from 2
10 is taken out and conveyed to a position below the printed circuit board mounting/removal device 12, and handed over to the circuit board chuck 26A or 26B, and the printed circuit board 110 with the parts mounted received therefrom is transported in the opposite direction to the magazine rack. 112. The magazine rack 112 has a plurality of pairs of board support protrusions provided at equal heights on the inner surface of one side wall of a rectangular cylindrical case and a partition wall facing it, and the printed circuit board 110 is provided with a plurality of pairs of board support protrusions at equal heights. Both side edges are supported by the protrusions, and they are accommodated in an overlapping state with a fixed interval in the vertical direction. This magazine rack 112 is conveyed by a rack conveyor 114 shown on the right side of FIG. 5, is supported by a lifting platform (not shown) of a lifter 116, and is raised by an amount corresponding to each step of the plurality of pairs of support ridges. I am made to do so. Although the external dimensions of the magazine rack 112 are all the same, by moving the position of the partition wall, it is possible to change the size of the printed circuit board from the large printed circuit board indicated by the reference numeral 110 to the small printed circuit board indicated by the reference numeral 110a in FIG. It is possible to accommodate printed circuit boards of various sizes.

The substrate transfer device 14 includes a fixed rail 120 and a movable rail 1.
22, a substrate guide 124 and a substrate extrusion device 126.
and a board retracting device 128. The fixed rail 120 and the movable rail 1-22 are installed parallel to each other, and engage with both side edges of the printed circuit board 110 to linearly guide it. Movable rail 122
is guided by two guide rods 130 disposed at right angles to the substrate conveyance direction so as to be able to move in parallel.
It is moved toward and away from the fixed rail 120 by a feed screw 134 rotated by a handle 132,
It is designed to be able to guide printed circuit boards 110 of various widths.

The board extrusion device 126 has a button 138 fixed to the tip of a piston rod of an air cylinder 136, and the button 138 plunges into the magazine rack 112 to push out the printed circuit board 110, and is provided at the left end in FIG. It is designed to be pushed until it comes into contact with a stopper (not shown). A bracket 140 supporting the air cylinder 136 has a long hole 1 along the longitudinal direction of the air cylinder 136.
42, and is fixed to a support member (not shown) in a position that matches the size of the printed circuit board 110 to be pushed.

Further, the board retracting device 128 includes an air cylinder 144 and a retracting claw 148 coupled to the piston rod thereof via a sliding rod 146. Sliding rod 146 and retraction claw 1
48 is the guide 1 when the air cylinder 144'' is operated.
50, moves from the position shown by the two-dot chain line to the position shown by the solid line in FIG. and into the magazine rack 112. Sliding rod 1
46 is double chamfered over its entire length, and the guide 150
The guide hole also has a corresponding cross-sectional shape,
Rotation of the sliding rod 146 and the retraction claw 148 is prevented.

Next, the substrate chucks 26A and 26B will be explained, and both have the same structure.

In FIGS. 6 and 7, 160 is a chuck main body, which includes two side plates 162, 164 parallel to each other and two channel members 16 that connect the side plates 162, 164.
It has a rectangular frame structure consisting of 6. This chuck body 160 is connected to the rod 3 via a bracket 168.
4 are fixed in a posture extending parallel to each other in the vertical direction, and these rods 34 are connected to the arms 24A, 24.
It is slidably held by the arm tip 172 of B. One side plate 16/4 of the chuck body 160 has
A third claw 180 is attached.

Further, as shown in FIG. 7, a second eight 184 is slidably supported by two guide rods 182 that extend parallel to each other between the side plates 162 and 164. The sliding movement of the second eighth 184 along the guide rod 182 causes the second claw 180 and the second eighth 184 to approach and separate from each other, so that they jointly hold and release the printed circuit board 110. It is.

As is clear from FIG.
The mold body 192 has an L-shaped cross section and is fixed to the lower end of the mold body 192, and an auxiliary claw 194 that is rotatable with respect to the mold body 192 is provided. As is clear from FIG. 8, the mold body 192 is a longitudinal member, and a plurality of auxiliary claws 194' are arranged at intervals in the longitudinal direction. That is, three pairs of brackets 196 are fixed to the upper surface of the mold body 192, and three auxiliary claws 194 are fixed to a rotating wheel 198 rotatably supported by these three pairs of brackets 196. be. As is clear from FIG. 7, these auxiliary claws 194 are connected by a connecting rod 200, and are configured to rotate all at once about a rotating wheel 198.

As shown in FIG. 6, a spring 202 is stretched between the connecting rod 200 and the chuck body 160, and the elastic force of the spring 202 causes the auxiliary claw 194 to move as shown in FIG. and is biased counterclockwise. This counterclockwise rotation is prevented by the auxiliary pawl 194 fitting into a notch 204 formed in the mold body 192 and coming into contact with the mold body 192. A pair of engagement protrusions 206 are formed at the lower end of the auxiliary claw 194 and are spaced apart in the vertical direction, and these engagement protrusions 206 are formed in a state where the counterclockwise rotation of the auxiliary claw 194 is prevented as described above. protrudes from the inner surface of the mold body 192 facing the second 8 18-4, and engages with the side edge of the printed circuit board 110 which is brought into contact with the inner surface from both the upper and lower sides.

An air cylinder 210 is fixed downward to the upper end of the side plate 164, and a button 212 fixed to the piston rod of the air cylinder 210 engages a plurality of auxiliary claws 19.
It is located directly above one of the four. Then, as the button 212 is lowered by the operation of the air cylinder 210, the plurality of auxiliary pawls 194 are moved toward the spring 21.
2, the engaging protrusions 206 are retracted from the inner surface of the eight main bodies 192 and are not engaged with the side edges of the printed circuit board 110. There is.

On the other hand, the second eighth 184 includes a pair of cylindrical members 216 slidably fitted to the guide rod 182, and the cylindrical members 21
6 and the elongated eight main bodies 218 that connect the eight main bodies 2
18 and a plurality of claw members 220 detachably attached to the terminal. Each claw member 220 is provided with engaging protrusions 222 spaced apart vertically on the inner surface facing the first claw 180, and these engaging protrusions 222 engage one side edge of the printed circuit board 110 from both the upper and lower sides. It is like that.

As is clear from FIG. 9, the plurality of claw members 220 are arranged in a line along the longitudinal direction of the eight main bodies 218, and when the printed circuit board 110 to be held is small, the claw members 220 on the right side No. 281, as appropriate removed from
84 holds the printed circuit board 110, both ends of the printed circuit board 110 protrude from both ends of the second eight 184 by an appropriate amount as shown in FIG.

A slider 230 as a moving member is further slidably attached to the two guide rods 182.

The slider 230 is a longitudinal member disposed parallel to the eighth main body 218 of the second eighth 184, and a nut member 232 is fixed to the intermediate portion of the slider 230 in the longitudinal direction. A feed screw 234 disposed parallel to the guide rod 182 is screwed into this nut member 232.
4 is driven by the motor 236 to gears 238, 240, 242 (
(see FIG. 8), the slider 230 is moved along the guide rod 182. Motor 236, feed screw 234. Nut member 232. The gears 238, 240, 242, etc. move the moving member through the slider 230 to the second 8th 184.
The claw approaches.

A pawl driving device for moving in the separating direction is configured.

As shown in FIG. 6, a spring 244 as an elastic member is stretched between the slider 230 and the second eighth 184, and the second eighth 184 is directed toward the slider 230 due to its elastic force. , that is, it is biased in the direction of approaching the -th claw 180. The limit of this approach is defined by the cylindrical member 216 of the second eighth 184 coming into contact with the side surface 245 of the slider 230, and the side surface 245 of the slider 230 functions as a stopper.

No. 28 184 has a bracket 24 as shown in FIG.
A photoelectric switch 248 is attached to the slider 230, while a dog 250 is attached to the slider 230.
With these dogs 250 and photoelectric switch 248,
A detection device is configured that emits different electric signals when the second eighth 184 and the slider 230 are in contact with each other and when they are separated from each other. Also, a photoelectric switch 252 fixed to the chuck body 160 and a dog 2 fixed to the slider 230 are provided.
54 constitutes a detection device that detects the end of movement of the slider 230 in the claw separation direction.

The substrate chucks 26A and 26B are operated by the motor 236 being controlled by a sequence circuit or a control device such as a microcomputer.
Since this control device itself is well known, detailed explanation will be omitted.

The feeding and discharging of printed circuit boards by the apparatus configured as described above is performed in the following manner.

The magazine rank 11'2 containing the printed circuit board 110 before electronic components are attached is conveyed by the rack conveyor 114 shown in FIG. 5 and fixed on the lifting platform of the lifter 116. Then, the uppermost printed circuit board 110 in the magazine rack 112 is transferred to the board transfer device 140 and the board guide 1.
The lifting platform is lowered to the bottle position that matches the height of 24,
The substrate extrusion device 126 is activated and the pusher 138
As a result, the printed circuit board 110 is pushed out of the magazine rack 112 and carried to the terminal position of the circuit board transport device 14, as shown by the two-dot chain line in FIG.

At this time, the substrate chucks 26A and 26B in the substrate mounting/removal device 12 change from the state shown in FIG.
Although it is waiting at a position rotated by 0 degrees, the printed circuit board 11
0 is positioned at the end position of the substrate transfer device 14, the motor 56 of the rotary drive device 32 is started in the reverse direction based on a command signal issued from the control device, and the Geneva mechanism 5
A rotating shaft 20 is rotated via 8. The motor 56 is stopped when the drive wheel 64 of the Geneva mechanism 58 is detected by the photoelectric switch 80 to rotate the drive wheel 64 through 180 degrees, and accordingly, the drive wheel 64 is rotated through 90 degrees in the opposite direction. Therefore, the substrate chucks 26A, 26B
The pair of arms 24A and 24B holding the substrate are rotated 90 degrees in opposite directions, so that the substrate chuck 26A is located directly above the substrate transfer device 14, and the substrate chuck 26B is located directly above the rotary table 10. The state shown in Figure 1 is reached,
Subsequently, the lifting cylinder 44 is operated, and the substrate chucks 26A and 26B are lowered all at once. Since the printed circuit board is not yet supported on the rotary table 10 below the substrate chuck 26B, a detector (not shown) provided on the substrate chuck 26B detects this fact, and the substrate chuck 26B holds the printed circuit board. Do not perform any operation for this purpose. However, since the printed circuit board 110 is positioned below the substrate chuck 26A as described above, the substrate chuck 26A operates as follows to hold it.

When the substrate chuck 26A is lowered, the second die 184 is moved back a short distance from the closed position holding the printed circuit board 110 to the open position, and the auxiliary claw 194 of the first claw 180 is moved to the open position as shown in FIG. Since it is rotated by the pusher 212 to the position indicated by the two-dot chain line, the winter melon 1
80.184 retaining protrusion 206. '222 does not interfere with the side edge of the printed circuit board 1100. When the substrate chuck 26A reaches the lower end, the engagement protrusion 20
6 and 222 are located above and below the printed circuit board 110, respectively.

Next, the motor 236 is started in the forward direction, and the feed screw 23
4, the slider 230 is moved in the claw approaching direction (claw closing direction) in which the slider 230 approaches the -th claw 180. Second type 18
4 is the "ζ slider 23" due to the elastic force of the spring 244.
0, when the slider 230 moves, it moves integrally with the slider 230 in the claw approaching direction.

Eventually, the claw member 220 of the second mold 184 is attached to the printed circuit board 1.
The printed circuit board 110 is brought into contact with one side edge of the nail 1.
80 and the inner surface of the claw body 192, and is held in a pinched state, and is prevented from moving in the claw approach direction by the printed circuit board 110. However, since the slider 230 continues to move in the claw approaching direction, the dog 250 moves relative to the photoelectric switch 248 fixed to the second mold 184, and the photoelectric switch 248 generates a different level of electricity than before. emit a signal, ie a separation signal. Based on this separation signal, the forward rotation of the motor 236 is stopped, and the slider 2
30 also stops moving in the claw approaching direction. At the same time, the air cylinder 210 is activated, the pusher 212 is retracted, the auxiliary claw 1''94 is allowed to return to the position indicated by the solid line in FIG. 206 is engaged with one side edge of the printed circuit board 110 from both the upper and lower sides. That is, the printed circuit board 110 is held by the substrate chuck 26A, but during this time, the substrate chuck 26B does not perform any operation, and the substrate chuck 26A is held by the lifting cylinder 44.
is raised at the same time as is raised. After the substrate chucks 26A, 26B are raised, the pair of arms 24A, 24B holding the substrate chucks 26A, 26B are bent by the rotary drive device 32, and the pair of arms 24A, 24B are moved forward 9 from the state shown in FIG.
It will be stopped at a position rotated by 0 degrees.

With this rotation, the grooved cam 400 acts to cause the substrate chaff to
The side substrate chuck 26A is lowered while the substrate chuck 26B is raised.

26B has the same height.

From this state, the rotation shaft 20 is further moved by the rotation drive device 32.
is rotated 90 degrees in the forward direction, and the substrate chucks 26A and 26B are exactly interchanged in FIG. Subsequently, the lifting cylinder 44 is operated to lower the substrate chucks 26A and 26B all at once, and the printed circuit board 110 held by the substrate chuck 26A is attached to the rotary table 10. However, since the board chuck 26B does not hold a printed circuit board, it simply descends.
Printed circuit board transfer operations are not performed.

Attachment of the printed circuit board 110 to the rotary table 10 using the substrate chuck 26A is performed as follows.

Since the rotary table IO has been positioned at a predetermined position in advance, when the substrate chuck 26A is lowered, the printed circuit board 110 held by it is positioned at a predetermined position on the rotary table IO.

Subsequently, the auxiliary claw 194 is rotated to the retracted position by the air cylinder 210, and the motor 236 is started in the opposite direction. This causes the slider 230 to move to the -th pawl 18.
At the beginning of this movement, the second eighth 184 is engaged with the printed circuit board 110, and the slider 23 is moved away from the slider 23.
Since it is spaced apart from 0, even if the slider 230 moves, the second eighth 184 does not move.

However, the slider 230
When it comes into contact with , the second 81 and 84 move together with the slider 230 in the interlayer direction. Further, at the time when the slider 230 and the second eight 184 come into contact, the photoelectric switch 248 detects the dog 250 and issues a contact signal.

Based on this contact signal, a timer of the control device starts a timing operation, and issues a time-up signal after a predetermined time has elapsed. Based on this time-up signal, motor 2
36 is stopped, whereby the second eighth 184 moves along with the slider 230 by a predetermined short distance in the interlayer direction, and the claw member 220 separates from one side edge of the printed circuit board 110. That is, the printed circuit board 110 is released, and then the substrate chucks 26A and 26B are simultaneously raised by the lifting cylinder 44 and rotated by 90 degrees in the opposite direction by the rotary drive device 32.

The substrate chuck 26A is at the 90 degree rotated position.

26B is on standby, electronic components are mounted on the printed circuit board 110 mounted on the rotary table 10, while components are mounted on the magazine rack 112 raised one step by the beam cover 116 on the board transfer device 14 side. The printed circuit board 110 of the board extruder 126
The substrate is pushed out and positioned at the terminal position of the substrate transport device 14.

When the mounting of electronic components to the printed circuit board 110 on the rotary table 10 is completed and the rotary table 10 is moved to a position below the board mounting/removal device 12, the rotation drive device 32 and the lifting cylinder 44 are operated again. The substrate chucks 26A and 26B are rotated 90 degrees in opposite directions and then lowered to hold the printed circuit board 110 on the rotary table 1o and the printed circuit board 110 on the substrate transport device 14, respectively. Thereafter, the substrate chucks 26A and 26B are raised by the lifting cylinder 44, and once at 9° C.
The printed circuit board 26A is rotated continuously in the positive direction twice.
, 26B are swapped.

Subsequently, the substrate chucks 26A and 26B are lowered,
The parts are installed on the rotary table lo from the previous printed circuit board 11.
0 is attached, and the printed circuit board 110 to which parts will be attached is delivered to the board transfer device 14.

Then, the substrate chucks 26A and 26B are raised,
Similar to the case described above, electronic components are attached to the printed circuit board 110 on the rotary table 10 while being rotated 90 degrees in the opposite direction and placed in the standby position.
On the board transfer device 14 side, the printed circuit board 110 that has been delivered to the board transfer device 14 and is to be mounted is pulled into the magazine rack 112 by a board pull-in device 128 . At this time, the first printed circuit board 110 itself to be drawn into the magazine rack 112 is lowered to a position where the board support protrusion of the stage where the electronic component was previously supported matches the board transfer device 14. If the printed circuit board 110 is pushed out, the printed circuit board 110 will be stored in its original position, but if the second printed circuit board is kept at the same height as the previous printed circuit board, the printed circuit board 110 will be stored in its original position. The board will be accommodated in the stage where the second printed circuit board was accommodated.

Thereafter, the same operation is repeated and the magazine rack 112
When all the printed circuit boards 110 housed in the magazine rack 112 are to be mounted with electronic components later, the magazine rack 112 is carried out by a rank conveyor (not shown).
For component mounting, a new magazine rack 112 containing only the previous printed circuit board is supplied to the lifter 116.

After a suitable number of large printed circuit boards 110 have been fed and discharged through the above operations, if it becomes necessary to supply a smaller printed circuit board, for example, the printed circuit board indicated by reference numeral 110a in FIG. 5. , the movable rail 1'22 is brought closer to the fixed rail 120 by rotating the handle 132, and the width of the board guide 124 is adjusted to the width of the printed board 1.
10a. In addition, in the board mounting/removal device 12, three claw members 220 on the right side in FIG. 9 are removed, and the width of the second mold 184 is made suitable for holding the printed circuit board 110a.
This alone completes the setup change work for the board attachment/removal device 12.

9 As in the above case, the substrate chips 26A and 26B in the standby position are transferred to the substrate transfer device 14 and the rotary table 10.
Motor 2 was rotated directly above the
36 is activated in the forward direction, the slider 230 moves to the position shown by the dashed line in FIG. When the printed circuit board 110a is released, the second mold 184 is held on the printed circuit board 1.
It is stopped at a position a predetermined short distance away from one side edge of 10a. Since then, the second type i8
4, the movement is repeated by a short distance necessary to hold and release the printed circuit board 110a.

After that, if it becomes necessary to transport a large printed circuit board again, the width of the board guide 124 is changed to a suitable width on the board transport device 14 side, and each board mounting/removal device 12 substrate chuck 26A,
The width of the second mold 184 of 26B is determined to be suitable for the printed circuit board.

Then, when the reset button provided on the control device is operated by the operator, the motor 236 is started in the opposite direction, the slider 230 and the second mold 184 are moved toward the interlayer direction, and the photoelectric switch 252 is turned into the dog position. 254
When detected, the motor 23G is stopped. As a result, the second mold 184 has been moved to the end of the movement in the interlayer direction, and is in a state where it can hold a printed circuit board of any size.

Although one embodiment of the present invention has been described in detail above, this is literally an example, and the present invention should not be construed as being limited thereto, and various modifications and variations may be made based on the knowledge of those skilled in the art. It goes without saying that this includes improved embodiments.

[Brief explanation of drawings]

FIG. 1 is a partially sectional and schematic front view of a printed circuit board supply/discharge device according to an embodiment of the present invention. 2 is a view taken in the direction of the ■ arrow in FIG. 1, and FIG. 3 is an enlarged cross-sectional view of a part of the apparatus shown in FIG. 1. FIG. 4 is a cross-sectional top view of the apparatus shown in FIG. 3; FIG. 5 is a plan view schematically showing the substrate conveying device shown in FIG. 1, and the accompanying lid and rack conveyor. FIG. 6 is a front sectional view showing the substrate chuck of the apparatus shown in FIG. 1, and FIG. 7 is a plan view thereof. Figures 8 and 9 are respectively 6
FIG. 3 is a left side view and a right side view (partially shown) of the substrate chuck shown in the figure. 12: Substrate mounting/removal device 14: Substrate transport device 20: Rotating shaft (rotating member) 24A, 24B: Arms 26A, 26B: Substrate chuck 32: Rotating drive device 56: Motor (rotating Drive source) 58: Geneva mechanism 110. 110a niblint substrate 124: Substrate guide 126: Substrate extrusion device 128: Substrate retraction device

Claims (1)

[Claims] A board transport device that transports a printed circuit board and positions it at a predetermined position; and a board transport device that receives the positioned printed circuit board, attaches it to a board support device, and removes the printed circuit board from the board support device. A supply/discharge device for printed circuit boards, including a device for mounting and removing a board to be transferred to the board transfer device, wherein a rotating member is provided to be rotatable around an axis extending in the vertical direction, and a pair of arms are connected to the substrate from the rotating member. The pair of arms extends with a phase difference of 180 degrees, and a board chuck for holding a printed circuit board is attached to the tip of the pair of arms symmetrically with respect to the axis, and the rotating member is rotated at least every half rotation. When one of the pair of substrate chucks is located directly above the substrate support device when the rotating member is stopped, the other substrate chuck is connected to the rotation drive source through a Geneva mechanism having a stop position of the substrate transfer device. The substrate transport device is arranged so as to be located directly above the substrate chuck, and the pair of substrate chucks are raised and lowered all at once in a direction parallel to the axis by a common lifting drive device. Printed circuit board supply/discharge device.