JPH0251261B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention is a fully automatic IC soldering device that holds an IC on a carrier and automatically performs preliminary soldering to the lead terminals of the IC. This invention relates to a carrier horizontal reversal transfer device.

As is well known, the lead terminals of an IC are soldered in advance in order to prevent them from oxidizing and to easily and reliably solder the IC after mounting it on a printed circuit board.

Conventionally, when soldering IC lead terminals, the ICs were manually placed one by one on a jig attached to a carrier, and this jig was then attached to the carrier. Furthermore, even after soldering to the lead terminals was completed, the jig had to be manually removed from the carrier and the ICs were removed one by one from the jig, which required a lot of manpower and was time-consuming. Therefore, there were drawbacks such as poor soldering workability and increased costs.

For this reason, the inventor of the present invention was able to perform flux processing, soldering processing, cleaning, drying, and
We proposed a soldering device (see Japanese Patent Application No. 58-199590) that automatically performs everything up to removal.
With this device, the
After transferring the IC to the carrier, the IC was hung from the hook of the hanger that holds the IC, so the IC could fall off and be damaged, making it unusable. Cleaning and post-soldering cleaning were insufficient due to the limited soldering time, making it impossible to completely remove dust and flux adhering to the IC surface, resulting in economic losses in IC management. It was hot.

This invention was made in order to eliminate the above-mentioned drawbacks, and the carrier carrying the soldered IC is lifted up by the first carrier transport device, turned horizontally, and transferred to the second carrier transport device. A carrier horizontal reversal transfer device is provided. This invention will be explained below.

FIG. 1 is a schematic plan view of a fully automatic IC soldering device incorporating a carrier horizontal reversal transfer device according to the present invention, where 1 shows the entire fully automatic IC soldering device, 2 is an IC, and 3 is an IC soldering device. a storage box having multiple shelves on which a large number of the ICs 2 are arranged;
4 places the IC2 and slides it onto the IC2.
A shutter 5 transfers the data to the next carrier;
This carrier is equipped with a device to hold the IC2 so that it does not fall off, and has an openable and closable stopper that prevents the IC2 at the tip from slipping off the carrier 5 when the IC2 from the shooter 4 is moved and placed on the carrier 5. (not shown) is provided on the side opposite to the shooter 4. 6 is a wheel of the carrier 5; 7 is an axle of the wheel 6; 8 is a first fixed rail; 9 is a movable rail on which the carrier 5 travels and moves up and down; 10 is a movable rail on which the carrier 5 is transported intermittently. a first carrier transport device; 11 is an engagement piece that engages with the axle 7 of the carrier 5 in the first carrier transport device 10 to transport the carrier 5;
12 is an acid cleaning tank for removing dirt adhering to the IC 2 before soldering, 13 is a water cleaning tank for washing away acid adhering to the IC 2, 14 is an air blower for drying the IC 2, 15 is a fluxer, and 16 is a soldering tank. , 17 is a second fixed rail, and 18 is a carrier horizontal inversion transfer device (18) for hoisting the carrier 5, horizontally inverting the position of the stopper of the carrier 5 by 180 degrees, and transferring the carrier 5 to a second carrier transfer device at the next stage. (hereinafter simply referred to as a reversing transfer device), 19 is a transfer chain of the reversing transfer device 18, 20A, 20B
are the fixed rails at both ends, 21 is the fixed rail in the center,
22A, 22B are the respective fixed rails 20A, 20
23 is a central movable rail that comes into contact with the central fixed rail 21 and moves up and down; 24 is a second carrier transport device; 25 is an engagement that transports the carrier 5; piece, 2
Reference numeral 6 denotes a rod connected to transmit the driving source of the first carrier conveying device 10 to the second carrier conveying device 24, and is supported rotatably in the vertical direction. Numeral 27 is a water cleaning tank for cleaning the IC 2 after the soldering process, and a plurality of water cleaning tanks are provided. 28
A and 28B are fixed rails at both ends, and 29 is a central fixed rail.The fixed rail 28B at one end and the fixed rail 29 at the center are longer than the fixed rail 28A at the other end. 30 each of the fixed rails 28A,
This carrier transfer device lifts up the carrier 5 placed on the carrier 29 and transfers it to each of the fixed rails 29 and 28B, and does not include a device to horizontally flip the carrier 5. 31 is a transfer chain, 32 is a carrier conveyance device consisting of a cylinder and a rod, 33 is an engagement piece,
34 is a heater for placing and drying the IC2;
35 is a movable shooter that tilts the front part of the heater 34 and stores it in the next stage storage box; 36 is a storage box that stores the IC 2 that has finished drying; 37 is a storage box that lifts up the empty carrier 5 from which the IC 2 has been removed; A second carrier horizontal reversing transfer device (hereinafter simply referred to as a reversing transfer device), which inverts and transfers the carrier to the first fixed rail 8 side, 38 is a transfer chain.

Although the present invention relates to the carrier horizontal inversion transfer device 18, for convenience of explanation, the other parts will also be explained in sequence.

FIG. 2a is a schematic perspective view showing an enlarged portion of the shutter 4 in FIG. 1, and FIG. 2b is a side view showing the uneven groove in which the IC 2 is placed. , 41 is a fixed inclined plate, 42 is a movable plate whose one end is in contact with the inclined plate 41 and the other end is a rotating part, 43 is a large number of uneven grooves on which the IC 2 is placed,
Depending on the shape of IC2, the lead wire 2A of IC2 is engaged with any groove 43a. 44 and 45 are the above
Stoppers 46 and 47 are cylinders and rods for moving the IC2;
48 is an extrusion plate.

Figures 3a, b, and c show the first carrier conveyance device 1.
FIG. In these figures, the same reference numerals as in FIG. 1 indicate the same parts, and 51 is a frame of the first carrier conveying device 10, which is formed in an elongated shape. 52 is a sliding and rotatable bearing formed below the frame 51;
3 is a rod; 54 is a bearing for fixing the rod 53; 55 is a protruding plate integrally formed below the frame 51; 56 is a cylinder; 57 is the cylinder 5.
A cylinder 56 and a rod 57 form a driving device, and the tip of the rod 57 is fixed to the protruding plate 55. 58 is a bearing that rotatably supports the rod 26 shown in FIG. Note that L ₁ is the moving distance of the frame 51, and P is the pitch of the engaging piece 11.

FIG. 4 is a partially cutaway side view showing the carrier horizontal reversal transfer device 18 according to the present invention, in which the same reference numerals as in FIG. 1 indicate the same parts, 61 is a substrate, 62 is a cylinder fixed to the substrate 61, 63 is a rod, 64 is an upper panel fixed integrally with the rod 63, and 65 is a motor fixed to the upper panel 64, such as a pulse motor or a wiper motor. 66A is a drive gear of the motor 65;
66B is a driven gear, 67 is a shaft integrally formed with the driven gear 66B, and 68 is the motor 6.
The motor stand 69 of No. 5 is a bearing integrated with the motor stand 68, and is formed by a ball bushing, and is rotatable and slidable in the rotational direction and axial direction of the shaft 67, respectively. 70 is the substrate 6
1, and is fitted to be rotatable in the rotational direction of the shaft 67 and slidable in the axial direction of the shaft 67. Reference numeral 71 denotes a bearing attached to the substrate 61, which is movably supported by a guide shaft 72 fixed to an IC soldering device. Reference numeral 73 denotes a hanger panel, which is fixed integrally with the shaft 67. 74A, 74
B is an L-shaped engagement lever for lifting the carrier 5 by engaging with the handles 5A and 5B of the carrier 5, and is rotatably supported around a shaft 75 as a fulcrum. 76 is a cylinder, and one L is connected by a shaft 77.
It is rotatably attached to the letter-shaped engagement lever 74A. Reference numeral 78 is a rod, which is rotatably attached to the other mounting body 74B via a shaft 79.
A pair of L-shaped engagement levers 74A,
An opening/closing drive mechanism is configured to simultaneously expand or contract 74B.

5a and 5b are a side view and a sectional view taken along the line X-X of the second carrier conveying device 24, where the same reference numerals as in FIG. 1 indicate the same parts, 81 is a frame, and 82 is a sectional view taken along the line 83 is a base, 84 is a movable rail that moves in the longitudinal direction, 85 is a roller that guides the movable rail 84, 86 is a cylinder, and 87 is the aforementioned A rod integrally connected to the movable rail 84, 88 is a rod for suspending the frame 81, 89 and 90 are rollers provided at the upper and lower ends of the rod 88,
The rollers 89 roll on the movable rail 84 and suspend the rod 88, and the rollers 90 roll on the frame 81.
The frame body 81 engages with the lower surface 81b of the upper frame 81a.
and guides the movement of the frame body 81. 9
1 is a bearing that slidably supports the vertical movement of the rod 88; 92 is a pusher that rolls the roller 89 as the movable rail 84 moves, and lifts up the frame 81 via the rollers 89 and 90; It is the body.
Further, 93 is a vertical movement device for vertically moving the central movable rail 23, 94 is a rod, 95 is a concave guide portion, 96 is a roller, 97 is a lever, 98 is a cylinder, and 99 is a rod. Note that the vertical movement device 93 is attached to the movable rails 22A and 22B at both ends, and also to the movable rail 9 in FIGS. 1 and 3a.

FIG. 6 is a schematic side view showing a device for storing the IC 2 in the storage box 36 after drying, in which the same reference numerals as in FIG. 1 indicate the same parts, and 5C is a positioning pin for accurately setting the stop position of the carrier 5. , 101 is a cylinder, 102 is a rod, 103 is the rod 1
The engaging body provided in 02 has a recess 104 formed on its lower surface to engage with the positioning pin 5C. 1
05 is a cylinder, and a rod 106 pushes out the IC 2 placed on the carrier 5 onto a mounting table 107 on the heater 34. Note that the mounting table 107 is formed with the same uneven grooves 43 as shown in FIGS. 2a and 2b. 108 is the movable shooter 35
The movable shooter 35 is a pin that pivotally supports the pin 10.
8 as a fulcrum and tilt to the position indicated by the two-dot chain line. 1
A stopper 09 is formed of a cylinder and a rod, for example, and is located at the tip of the movable shooter 35, and is locked by a locking plate 110 to prevent the IC2 from falling off downward. Reference numeral 111 denotes a stopper for holding down the number of ICs 2 corresponding to one stage of the shelf 36A of the storage box 36, and a presser 112 holds the ICs 2 so that they do not move toward the storage box 36. And the length of the storage box L ₂ and the stopper 109, 111
The stopper 111 moves in the same direction as the moving direction of the IC 2 so that the length L ₃ between the two ends becomes the same distance. Furthermore, the stoppers 109 and 111 move with the rotation of the movable shooter 35 while holding down the IC 2 while maintaining the distance L ₂ and reach the position shown by the two-dot chain line.

FIGS. 7a to 7e are explanatory diagrams showing the operation of the second carrier conveyance device 24, respectively.

Next, the operation will be explained.

First, an outline of the operation of the fully automatic IC soldering apparatus 1 will be explained with reference to FIG.

The IC2 in the storage box 3 is moved to arrow A by the shooter 4.
It slides down in the direction and is placed on carrier 5,
It is stopped by a stopper (not shown) of the carrier 5.

Next, as the first carrier conveying device 10 is driven, the engagement piece 11 moves intermittently in the direction of arrow B while engaging and disengaging from the axle 7 of the carrier 5. During this time, as the movable rail 9 descends and rises, the IC 2 moves to the acid cleaning tank 12, water cleaning tank 13, air blower 14,
Each process is performed in a fluxer 15 and a solder bath 16, and the IC 2 is soldered.

Next, the carriers 5 are lifted up by the reversing transfer device 18 on the second fixed rail 17, reversed 180 degrees, and transferred in the direction of arrow C to the second carrier transfer device 24, where the two carriers are arranged in parallel. Ru. Thereafter, the carrier 5 is transported in the direction of arrow D by the intermittent operation of the second carrier transport device 24 at 1/2 the speed of the first carrier transport device 10, and the movable rails 22A, 22B, and 23 are lowered and raised, causing the carrier 5 to be transported in the direction of arrow D. It is cleaned in a cleaning tank 27.

Next, the IC 2 of one carrier 5 is transported to the heater 34 for drying by the carrier transport device 30 in the direction of arrow E, and further by the carrier transport device 32 to the heater 34 in the direction of arrow F.

Next, the IC 2 is pushed out from the carrier 5, placed on the heater 34, dried, and stored in the storage box 36 by the movable shutter 35. Thereafter, the empty carrier 5 is moved by the second reversing transfer device 37 in the direction of the arrow G and returned to the original first fixed rail 8.

Next, the operation of each device will be explained.

In FIGS. 1 and 2, the movable plate 42 is located at the position indicated by the two-dot chain line in FIG. 2a. Next, the lead wire 2A of the IC2 engages with the uneven groove 43 and slides down in the direction of arrow A from the storage box 3 of the IC2, and the stopper 44
The stopper 45 operates to press down the IC2 on the inclined plate 41.

Next, the movable plate 42 is rotated in the direction of arrow H to a horizontal position, and the rod 47 is activated to push out the push-out plate 48.
presses IC2 and places it on carrier 5.

Next, in FIGS. 1 and 3, the first carrier conveying device 10 is initially in the position indicated by the solid line. Next, when the rod 57 is activated and contracts, the frame 51
moves in the direction of arrow B, and the carrier 5 is attached to the engaging piece 11.
, and move it to the position indicated by the two-dot chain line. Note that the moving distance L ₁ of the frame 51 is the length of the engagement piece 1
The pitch P may be slightly larger than the pitch P of 1. Next, as shown in FIG. 3c, the frame 51 is rotated in the direction of arrow J by a rotating device (wiper motor, pulse motor, etc.) not shown, and the locking piece 11 engaged with the axle 7 is released. . Next, Rod 5
7 and moves the frame 51 in the direction opposite to the direction of arrow B, returning to the original solid line position shown in FIGS. 3a and 3b. Next, as shown in FIG.
Rotate in the opposite direction and return to the original solid line position,
One step of the first carrier conveying device 10 is completed. During this time, the movable rail 9 is lowered and raised, and the IC 2 placed on the carrier 5 on the movable rail 9 undergoes various processing.

In this way, the IC 2 is placed on the subsequent carrier 5 and made to stand by, and the frame 51 is again operated in the same manner as described above to transport the carrier 5.

The first carrier transport device 10 repeats the above operation to move the carrier 5 from the position of the shooter 4 onto the movable rail 9, and first performs cleaning in the acid cleaning tank 12, then in the water cleaning tank 13, and the air blower 1.
4. After each process is performed in the fluxer 15 and the solder bath 16, the carrier 5 is moved to the second fixed rail 1.
7.

Next, the carrier 5 on the second fixed rail 17 is lifted up by the reversing transfer device 18 shown in FIG.
It is transported in the direction of arrow C in FIG.

First, when the reversing transfer device 18 is positioned above the carrier 5 on the second fixed rail 17, the cylinder 6
The second rod 63 is lowered, and the hanger panel 73 is also lowered via the shaft 67. At this time, the rod 78 of the cylinder 76 contracts, and the L-shaped engagement levers 74A, 74B rotate in the direction of arrow K from the position indicated by the solid line and are held at the position indicated by the two-dot chain line. When the hanger panel 73 stops, the rod 78
extends and rotates the L-shaped engagement levers 74A, 74B in the direction opposite to the direction of arrow K to engage the handles 5A, 5B of the carrier 5. Next, Rod 6
3 extends and the hanger panel 73 rises, the motor 65 rotates and each gear 66A, 66B
rotates, and the hanger panel 73 rotates 180 degrees via the shaft 67 and stops. During this time, the reversing transfer device 18 places the carrier 5 on the fixed rail 20A in the front in the transfer direction and the fixed rail 21 in the center by running the transfer chain 19, and repeats the above-mentioned operation in reverse to place the carrier 5. Reversing transfer device 18
release from engagement. Next, the reversing transfer device 18
returns to the initial position, lifts up the next carrier 5, turns it over, transfers it, places it on the central fixed rail 21 and fixed rail 20B on the front side of the position where the carrier 5 was placed, The carriers 5 of the stand are arranged in parallel.

Next, in Figure 5 a and b, the carrier 5
IC2 (not shown) is the second carrier conveyance device 2
4, and water washing is performed in a water washing tank 27. Next, each fixed rail 20A, 2
As shown in FIG. 7a, each carrier 5 on the carriers 1, 21, and 20B engages the engaging piece 25 with the axle ₇₁ of the carrier 5 by lowering the frame 81. And frame body 8
1 moves in the direction of arrow D via the frame 51 and the rod 26 by the extension of the rod 57 shown in FIGS. 25, the axle 7 ₁ and wheel 6 ₁ are connected from the fixed rails 20A, 20B, 21 to the movable rails 22A, 22B, 23 (Fig. 5b, Fig. 7a).
-e, the central movable rail 23 is shown as a representative for illustration purposes), and the carrier 5 is positioned above the water washing tank 27.

Next, in FIG. 7b, each movable rail 22A,
By lowering 22B and 23, the IC2 of the carrier 5 is washed in the water washing tank 27. During this time, cylinder 86
The rod 87 contracts and moves the movable rail 84 in the direction of arrow D.
When the roller 89 moves in the opposite direction, the roller 89 rides on the push-up body 92 and rises, so that the frame body 81 also rises to the position indicated by the two-dot chain line.

Next, in FIG. 7c, the frame 81 moves to the position indicated by the two-dot chain line via the frame 51 and the rod 26 due to the contraction of the rod 57 in FIG.

Next, in FIG. 7d, the frame body 81 moves in the direction of arrow D due to the extension of the rod 57 in FIG. 3, and reaches the position indicated by the two-dot chain line. At this time, the engagement piece 25 does not engage with the axle ₇₁ of the carrier 5, resulting in an idle feed operation. During this time, the two carriers 5 are moved to each fixed rail 20A, 20 by the reversing transfer device 18 shown in FIG.
They are arranged in parallel on B, 21 and are waiting.

Next, as shown in FIG. 7e, the frame 81
The contraction of the rod 57 in the figure returns it to the position indicated by the solid line.
Next, the roller 89 is lowered by the extension of the rod 87, lowering the frame 81 to the position indicated by the two-dot chain line, and at the same time moving up the movable rails 22A, 22 from below.
The axle 7 of the carrier 5 on B, 23 and the axle ₇ of the carrier 5 on each fixed rail 20A, 20B, 21
₂ are engaged at the same time, resulting in the position shown by the solid line in FIG. 7a. Next, the same operation as above is repeated again to sequentially transport the carrier 5 and clean the IC 2.

Next, the carrier 5 on which the cleaned IC 2 is placed is transferred onto each of the fixed rails 28A, 28B, and 29, respectively, as shown in FIG. First, 2
Each fixed rail 2 of the carriers 5 arranged in a row
The carrier 5 on the front side on 9, 28B is driven by the carrier conveying device 32 so that the engaging piece 33 engages with the axle 7 and is conveyed to the position of the heater 34.

Next, as shown in FIG.
It engages with the positioning pin 5C, is corrected to the correct position, and stops. Next, the IC 2 is pushed out by the extension of the rod 106, and placed on the mounting table 1 on the heater 34.
07 and dried by the heater 34. Next, the ICs 2 from the carrier 5 are pushed out one after another and are locked by the locking plate 110 of the stopper 109 at the tip, and then the IC2 is held down by the presser 112 of the stopper 111 at the front. Next, the movable shooter 35 tilts to the position indicated by the two-dot chain line, and then the locking plate 110 rises.
The IC2 slides down and is stored in the storage box 36.
Then, by repeating the above operation, the ICs 2 are sequentially stored in the storage box 36 which is raised intermittently.

While performing the above drying and storage operations,
The other carrier 5 placed on each of the fixed rails 28A and 29 shown in the figure is lifted up by a carrier transfer device 30 and transferred onto each of the fixed rails 29 and 28B on the front side as the transfer chain 31 runs.

Thereafter, the empty carrier 5 after pushing out the IC 2 is lifted up by the reversing transfer device 37, reversed 180 degrees, and placed on the original first fixed rail 8 by the movement of the transfer chain 38, completing the entire process. do.

As explained above, the present invention provides a fully automatic soldering device for ICs in which a first carrier transport device that intermittently transports carriers between an acid cleaning tank and a soldering tank is connected to a plurality of water cleaning tanks. By the way, in order to transfer to the second carrier conveyance device arranged in parallel, a pair of L-shaped engagement levers are rotatably provided at both ends of the hanger panel, and the pair of engagement levers are expanded at the same time. An opening/closing drive mechanism that opens and engages the carrier and simultaneously contracts and closes to release the engagement with the carrier, a shaft that is integrally fixed to the hanger panel, and a drive device that moves the shaft up and down. It consists of a motor that rotates the shaft in the horizontal direction, and when the opening/closing drive mechanism is activated, a pair of L-shaped engagement levers open and close to engage or disengage the carrier, ensuring reliable operation. Operation is guaranteed and the carrier will not fall off. After the carrier and the engagement lever are engaged, the hanger panel can be pulled up and rotated at the same time, which provides advantages such as excellent operability.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view showing an embodiment of the present invention, Fig. 2a is a schematic perspective view showing an enlarged portion of the shutter in Fig. 1, and Fig. 2b is an uneven groove in which an IC is placed. Figures 3a, b, and c are plan views, side views, and front views showing the first carrier transfer device; Figure 4 is a partially cutaway side view showing the carrier horizontal reversal transfer device; Figures a and b are a side view and a sectional view taken along line X-X of the second carrier conveyance device, Figure 6 is a schematic side view of the device for drying ICs and storing them in a storage box, and Figures 7 a- FIG. 3e is an explanatory diagram showing the operation of the second carrier conveyance device. In the figure, 1 is a fully automatic IC soldering machine, and 2 is
IC, 3 is storage box, 4 is shooter, 5 is carrier,
6 is a wheel, 7 is an axle, 8 is a first fixed rail, 9
10 is a movable rail, 10 is a first carrier conveyance device,
11 is an engagement piece, 12 is an acid cleaning tank, 13 is a water cleaning tank, 14 is an air blower, 15 is a fluxer, 16 is a soldering tank, 17 is a second fixed rail, 18, 37
is a carrier horizontal reversal transfer device, 19 and 38 are transfer chains, 20A, 20B, 28A, and 28B are fixed rails at both ends, 21 and 29 are fixed rails in the center,
22A and 22B are movable rails at both ends, 23 is a movable rail in the center, 24 is a second carrier conveyance device,
25 is an engagement piece, 26 is a rod, 27 is a water cleaning tank,
30 is a carrier transfer device, 31 is a transfer chain, 3
2 is a carrier conveyance device, 33 is an engagement piece, 34 is a heater, 35 is a movable shutter, 36 is a storage box, 61
is the board, 62 and 76 are the cylinders, 63 and 78 are the rods, 64 is the upper panel, 65 is the motor, and 66A
is a driving gear, 66B is a driven gear, 67 is a shaft, 68 is a motor stand, 69, 70, 71 are bearings,
72 is a guide shaft, 73 is a hanger panel, 74
A, 74B are L-shaped attachments, 75, 77, 79
is the axis.

Claims (1)

[Claims] 1 A carrier to which the IC to be soldered is attached,
An acid cleaning tank for cleaning the IC before soldering, a water cleaning tank, an air blower, a fluxer for fluxing the cleaned IC, and a soldering bath for soldering are arranged in sequence, Also,
The above IC after soldering in parallel with this
A first carrier that intermittently transports the carrier between the acid cleaning tank and the soldering tank of the fully automatic IC soldering apparatus, which is equipped with a plurality of water cleaning tanks for cleaning the water and a heater, and a heater. A carrier horizontal reversal transfer device used for transferring the carrier from the transfer device to a second carrier transfer device arranged in parallel at the plurality of water washing tanks, the carrier having a pair of L-shaped plates at both ends of the hanger panel. an opening/closing drive in which a pair of engagement levers are rotatably provided, and the pair of engagement levers are simultaneously expanded to engage the carrier, and simultaneously contracted and closed to release the engagement with the carrier. A carrier horizontal inversion transfer device comprising a mechanism, a shaft fixed integrally with the hanger panel, a drive device for vertically moving the shaft, and a motor for horizontally rotating the shaft.