JPS5997759A - Changer for traveling direction of carrier for soldering device - Google Patents

Abstract

PURPOSE:To transfer quickly and surely a carrier and to improve operability in soldering by subjecting the printed circuit board mounted on the carrier to preliminary soldering then turning over the carrier in a horizontal direction by a rotary table and subjecting the printed circuit board to finish soldering. CONSTITUTION:A carrier 3 mounted thereon with a printed circuit board 2 is transferred by a chain 16 in a direction A and the board 2 is subjected to preliminary soldering in the 1st conveyor 4. The carrier 3 rides thereafter on the chain 18 on a free frow line 10 and travels in the direction A until it transfers on a free flow chain 36 traveling in the direction A. A rotary table 31 rotates by 180 deg. in a direction B, then the carrier 3 turns over in a horizontal direction. The carrier 3 rides, from the chain 36, via a free flow chain 11 traveling in a direction C, on the 2nd conveyor 6, where the printed circuit board is subjected to finish soldering while the carrier is transferred by a chain 17. The carrier 3 rides further on a free flow chain 12 where the board 2 is removed and thereafter the similar operation is performed by a rotary table 51 so that the carrier returns to the 1st conveyor 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a first or second printed circuit board carrier.
Soldering involves changing the running direction of the carrier by transferring it from a transporting device to a horizontally rotating turntable and then transferring it to a second or chain length transporting device.

Conventionally, the carrier on which the Print 1 board is attached is transported by a first transport device to perform preliminary soldering, and then transferred to a movable table that reciprocates in a direction perpendicular to the direction of travel of the carrier, and then placed on the movable table. The placed carrier is transferred to a second transfer device installed on the same plane as the first transfer device, and the final soldering is processed.
By the way, the above-mentioned moving platform requires a main and reciprocating device to perform the slave movement, and therefore the shape of the transfer device for changing the traveling direction of the carrier becomes complicated, and soldering increases the cost of the entire device. It had the disadvantages of () being expensive and prone to failure.

This invention has been made in order to eliminate the above-mentioned drawbacks, and the present invention has been made in order to eliminate the above-mentioned drawbacks. The conversion device is intended to provide a path. Hereinafter, this invention will be explained with reference to the drawings.

FIG. 1 is a plan view showing a 1'-A embodiment of the present invention, and FIGS. 2(a) and 2(b) are an enlarged plan view and side view of the main parts of FIG. 1. In these figures, F indicates the entire device for soldering, 2 indicates a printed circuit board, 3 indicates a carrier to which the printed circuit board 2 is attached, and 4 indicates a first conveyor for conveying the carrier 3 in the soldering device 1. 5 is a first running direction converting device that is provided in contact with the front end of the first transport device 40 in the running direction and changes the running direction of the carrier 30; 6 is the first running direction changing device α5;
A second conveying device that is in contact with the rear end of the carrier in the running direction and is provided in parallel with the first fa feeding device 4 and that conveys the carrier 3 in the opposite direction to the first conveying device 4; a second running direction conversion device that is provided in contact with the front end of the second transport device 60 in the running direction and the rear end of the first transport device 40 in the running direction and converts the running direction of the carrier 30;
8 is a pre-soldering processing device provided on the first transport device 4; 9 is a final soldering processing device provided on the second transport device 6; 10, 11, 12, and 13 are processing devices for carrying out the carrier 3; The above-mentioned first. Second conveying device 4.6 and first degree second running direction R
and the converter 5.7. 14 is a running rail provided in the processing device 8 for carrying the carrier 3 and performing preliminary soldering; 15 is a running rail provided in the processing device 91C for carrying the carrier 3 and performing final soldering; 16.1
7 is an endless conveyor chain provided in the processing apparatus 9 for preliminary soldering and for final soldering in order to lock and transport the carrier 3. Flow lines 10, 11, 12° 13 are provided with endless 7-leaf flow chains, 22° 23 are the front and rear wheels of the carrier 3, and 24 is a lock provided laterally with respect to the traveling direction of the carrier 30. In one piece, conveyance Cheno 16.17
It is locked to the pin 26 of. 25 is a retaining piece provided in front of the carrier 30 in the traveling direction; 27.29 is a stopper for temporarily stopping the carrier 3 when it is necessary to put it in a standby state on the free pull chain 18.20; 28.30
is a rond which protrudes and engages with the carrier 30 series mating piece 25 when the stoppers 27 and 29 are driven. In the first running direction changing device 5, 31 - is a rotary table, 32 is a rotating shaft of the rotary table 310, and 33 is a motor for rotating the rotary table 31, and a pulse motor or the like is used. It is designed to stop every time it rotates 180 degrees. 34 is a roller of the rotary table 31, 35 is a rail of the roller 34, and 36.37 is a free flow chain provided on the rotary table 31, on which the carrier 3 is placed by transfer, and a point at the center of the rotary table 31 is set. They are provided so that they run in opposite directions at symmetrical positions. 38.3
Reference numeral 9 designates a transmission device for running the free flow chain 36.degree. 31, and 40.41 designates a motor of the transmission device 38.39. 42 and 43 are detectors for detecting that the carrier 3 is placed on the first traveling direction changing device 5 by contacting or sensing the locking plate 24 of the carrier 3, which includes a limit switch, a phototube, etc. In the second traveling direction changing device T used, 51 is a rotary table, 52 is υI
I rotary table 510 rotation axis, 53.54 is the said rotary table 51
A free chain 70 provided above carries the carrier 3 and runs in opposite directions. In addition, other parts are the same as those of the first running direction changing device 5, so illustration thereof is omitted.

Next, the operation will be explained.

In the first transport device 4, the pin 26 of the transport chain 716 is locked to the locking plate 24 of the carrier 3 on which the printed circuit board 2 is mounted, and the carrier 3 is moved in the direction of the arrow by driving the transport chain 16 (FIG. 1). When the PCB 2 is run, the processing device 8 performs Franks processing, preheating, and pre-soldering on the printed circuit board 2.
Soldering is processed.

The carrier 3 is connected to the free flow line 1 after it has been cooled down, soldered, etc., and the preliminary soldering has been completed.
Transfer to free flow line 18 above 0. At the same time, as the transport chain 716 moves down, the pin 26 also descends diagonally, and the pin 26 that is locked to the locking plate 24 separates from the locking plate 24.Next, the carrier 3 transferred to the free flow chain 1B travels in the direction indicated by the arrow A, is transferred to the first travel direction converting device 5, and is transferred onto the free flow line 36, which is traveling in the direction of the arrow A, driven by the motor 40, and travels thereon. At this time, when the detector 42 detects that the carrier 3 is placed on the first running direction changing device 5, the stopper 27 that is interlocked with the detector 42 is activated and the iron 28 protrudes downward. The carrier 30 is engaged with the retaining piece 25 of the next carrier 3 to stop the carrier 30 from moving, and the first rotating table 31 is moved in the direction indicated by the arrow B as shown in FIG. 3(a).
Rotate in the direction. When the rotary table 31 rotates through an angle of 180 degrees, the carrier 3 is horizontally reversed to the position shown in FIG. 3(b).

Note that the rotating table 31 may be rotated counterclockwise in the direction of arrow B' as shown in FIG. 3(c).

Next, the carrier 3 is moved from the position shown in Fig. 3(a) to the position shown in Fig. 3(b).
), the next carrier 3 waiting on the flow top 18 is moved to the stopper 270 Rondo 2.
8 is released from the engagement of the engagement piece 25 as it rises and starts running, and as shown in FIG. 3(d), the motor 40
is driven and moves the carrier 3 on the free 70-chain 36 in the direction of arrow C to move the free 7 on the free flow line 11.
Transferred to 0-chain 19. Further, the carrier 3 running on the free 70-chain 19 is engaged with the locking plate 24 on the ascending bin 26 of the conveyance check 7IT, and the final soldering is carried out on the processing device 9, where the flux processing and the preliminary Heating and soldering are processed.

Finish soldering is completed after processing steps such as cooling.

Next, the carrier 3 is transferred to the 7-leaf oven 20 of the color free flow line 12 of the processing device 9 for final soldering. During this time, the printed circuit board 8 and the carrier 3 are also removed and become empty, and then, as in the case of the first running direction changing device 5 described above, the printed circuit board 8 is transferred to the second running direction changing device 1 and placed on the same rotation table 51. Place it on the free flow chain 53. After the rotary table 51 rotates by 180 degrees, the Yayaria 3 transfers from the free flow chain 53 to the free flow chain 21 on the free 70-line 13, and transfers the unprocessed printed circuit board 2 to the empty carrier.73. K is attached and transferred to the first transport device [4] at Yushu.

As explained above, the present invention provides rotary tables which are rotated in the horizontal direction by a drive device, and these rotary tables are provided with a first rotary table. The free-flow chains, which carry the carriers transferred from the second conveyance device and run, were set up so that they ran in opposite directions to each other at positions symmetrical about the center of the rotary table.
The carrier is transferred from the first and second conveying devices to the first and second conveying devices. 'to the second travel direction changing device, and to the first. The speed of transfer from the second running direction changing device to the second and first conveying devices can be increased □, and since the running direction changing device is a rotary table that rotates simultaneously, soldering can be done in the device. It is possible to shorten the time during which the carrier is stopped and waiting.

Also, 1st. Since the second travel direction changing device is rotated by a rotation operation that is limited to only a predetermined angle, the transfer operation is fast (it is reliable, so there are fewer failures, and 11 operations can be improved and costs can be reduced by 1). has advantages.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of the present invention, and FIG. 2 (
Are a) and (b) Abe in Figure 1? The enlarged plan view and side view, and FIGS. 3(a) to 3(d) are explanatory diagrams showing the rotational operation of the first running direction changing device. In the figure, 1 is a soldering device, 2 is a printed circuit board, 3 is a carrier, 4 is a first conveyance device, 5 is a first parallel direction conversion shaft, 6''+th'' conveyance device, 7 The 11th is the conveyor chain 7.1B, the 19th and 20.21 are the free 70-chains,
27.29 is a stopper, 31°51 is a rotating table, 32.5
2 is the rotating shaft, 36.37°53.54 is the 7 leaf chain. Figure 3Figure 3

Claims (1)

[Claims] A carrier on which a printed circuit board can be mounted freely and a first conveying device for causing the carrier to travel in one direction are provided, and the carrier is in contact with a front end of the first conveying device in the traveling direction and is traveling from the first conveying device. A first running direction changing device is provided for horizontally transporting the carrier to change the running direction of the carrier, and the first running direction changing device and the rear end of the running direction are in contact with each other, and The carrier whose running direction has been changed by the running direction changing device is transferred to the first carrier.
A carrier traveling direction changing device for a soldering apparatus, characterized in that a second conveying device is provided which causes the carrier to travel in the opposite direction on the same plane and parallel to the conveying device.