JPS5922389B2 - Printed circuit board soldering equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a printed circuit board can be easily loaded onto and removed from a carrier by providing a circuit board mounting device on both sides of a transport rail on which a carrier on which a printed circuit board is mounted is transported. This invention relates to a soldering device for printed circuit boards.

FIGS. 1a and 1b are a plan view and a side view showing the structure of a conventional carrier. In these figures, 1 is a carrier, and spring bodies 3 are provided on both sides of the lower surface of a frame body 2 so as to be biased inward. A locking piece 4 is attached to one side of the frame 2, and a through hole 5 is engaged with the locking piece 4. 6 and 7 are wheels provided on both sides of the frame 2, respectively.

8 is a printed circuit board mounted on the carrier 1.

The carrier 1 having the above structure is set in a soldering apparatus shown in FIG. That is, in FIG. 2, the carrier 1 is engaged with a large number of pins 11 set at predetermined intervals on a conveying chain 10 that is stretched between sprocket wheels 9a and 9b and rotates constantly by driving one of the sprocket wheels. Stop piece 4
The carrier 1 is supported by the conveying chain 10 by engaging with the through hole 5 of the carrier 1. Reference numeral 12 denotes an inner conveyor rail on which the wheels 6 are guided, and 13 an outer conveyor rail on which the wheels T are guided.

Now, the printed circuit board 8 is mounted on the carrier 1 at position P1, and then the carrier 1 is transported, for example, in the direction of arrow A, and undergoes a predetermined process, that is, flux is applied to the printed circuit board 8 by the flow depth fluxer 14, and the reserve is ``. Heater 15
After being heated in
After cooling, the cutter 18 cuts off the excess lead wire, and the flow dip fluxer 14 and the reserve power heater 1 are used again.
5. The printed circuit board 8 is passed through a solder bath 16, etc., and finished soldering is applied, and the printed circuit board 8 is removed from the carrier 1 at a position P2.

Note that 19 is a jet motor. By the way, when the printed circuit board 8 is mounted on or removed from the carrier 1 set in the soldering machine shown in FIG. The printed circuit board 8 is sandwiched between the spring bodies 3 and installed. After soldering, the printed circuit board 8 is removed by performing the reverse operation to the above, and placed on a conveyor installed below (not shown) to be transported to a predetermined position. I was taking it out by writing it in the outlet.

Therefore, when mounting/dismounting the printed circuit board 8, it is necessary to place it inside the soldering device and spread the space between the spring bodies 3 of the carrier 1 against the spring force each time to perform the mounting/dismounting operation. It was extremely difficult and troublesome to do. The present invention has been made in consideration of the above points, and a soldering device is provided with a board mounting device, and a printed circuit board can be mounted and removed using a push-pull type or a push-pull type.

This invention will be explained below. Figures 3 and 4 show one embodiment of the present invention, with Figure 3 being a plan view showing the overall configuration, and Figure 4 being a perspective view showing details of the main parts of Figure 3. be.

Further, FIG. 5 shows a detailed side view of a portion of FIG. 4. In FIG. 3, 20 is a carrier section, 50 is a board mounting device,
They are installed at required locations on the outside of the soldering equipment to facilitate the mounting and removal of printed circuit boards.

Details of the carrier section 20 and the board mounting device 50 will be explained below with reference to FIGS. 4 and 5. In FIG. 4, reference numeral 21 denotes a housing of the soldering device, and an inner conveying rail 12 and an outer conveying rail 13 are provided on the upper part. Reference numeral 22 designates a carrier according to the present invention, with inner wheels 24 and outer torsion wheels 25 mounted on both sides of a frame body 23, so that these wheels roll on the transport rails 12 and 13.

Two support shafts 26 are attached at a predetermined interval in parallel to both transport rails 12 and 13 within the frame 23, and substrate holders 27 and 28 are supported on the support shafts 26 at right angles to the transport direction. Both sides of one substrate holder 27 are attached to each support shaft 26 via springs 29, so that a constant force is always applied inward by the springs. Further, the other board holder 28 is movable and fixed at a predetermined position, and the distance between it and the board holder 27 can be freely adjusted according to the size of the printed circuit board 8. ing. And each substrate holder 27,
At least a pair of substrate holding grooves 30 and 31 are formed in the grooves 28 so as to face each other and at the same height, so that when the printed circuit board 8 is inserted, it is held horizontally. Reference numeral 32 denotes a support portion of the carrier 22, in which dovetail keys 33 are fixed to one side of the carrier 22 at predetermined intervals, and dovetail keys 33 are engaged with dovetail grooves 35 formed through the sliding body 34. It is configured to be able to move up and down.

Furthermore, guide wheels 36 are rotatably supported at both ends of the bottom of the sliding body 34, as shown in FIG. Reference numeral 37 denotes a locking piece, which is pivotally attached to the sliding body 34 at its center position so as to be rotatable in the directions of arrows B and C.

38 is its pivot portion.

The locking piece 37 is provided with a through hole 39, into which the pin 11 of the conveying chain 10 is engaged. Reference numeral 40 denotes a guide rail for pin removal, which is formed into a smooth convex shape so that the board mounting device 50 is at the highest level. As 36 rolls, the sliding body 34 gradually rises, and the pin 11 comes to come out of the through hole 39.

Auxiliary chains 41 and 42 are arranged below the carrier 22 and stretched so that their surfaces are on the same level between sprocket wheels (not shown), and are driven in the same direction (same direction as the conveyance direction) by a driving source. is being driven endlessly.

When the pin 11 of the conveying chain 10 is released from the engagement with the through hole 39 of the locking piece 37, the carrier 22 rides on the auxiliary chains 41, 42, and then the auxiliary chains 41, 42 It is transported to the positioning point. Stoppers 43 and 44 hold down the front and rear sides of the carrier 22 to position the carrier 22 at a predetermined position.

The stopper 43 descends first at a predetermined timing, and the carrier 22 riding on the auxiliary chains 41, 42 comes into contact with the stopper 43 and stops, but the auxiliary chains 41, 42 slide forward.

Next, the stopper 44 is lowered and moved slightly in the conveying direction, so that the frame 23 of the carrier 22 is sandwiched between it and the stopper 43 and positioned at a predetermined position. As will be described later, once the printed circuit board 8 has been installed, both parts'! ．． $:
．． '． Violent heat: The upper surface of the grinning man guide rail 40 gradually descends, so the sliding body 34 also descends.

Then, the conveyance chain 10 and the auxiliary chains 41, 42
Since the speeds of the pin 11 and the through hole 39 are made to be different, the pin 11 and the through hole 39 are in relative motion, and eventually the pin 11 moves toward the through hole 3.
At 9, the carrier 22 is engaged again, and thereafter the carrier 22 is transported by the transport chain 10. On the other hand, the board mounting device 5
0 is firmly fixed to the housing 21 by appropriate means.

That is, the mounting support 51 is firmly fixed to the housing 21 , and the frame 52 is fixed to the mounting support 51 with bolts 53 . Guide rails 54 are arranged in parallel at predetermined intervals within the frame 52, and each guide rail 54 has a guide groove 55.
is formed. Reference numerals 56 and 57 designate substrate holders, in which grooves 58 and 59 for holding substrates are respectively formed facing each other and at the same level, and grooves 58 and 59 are formed in the carrier 22 of the carrier section 20 described above. The grooves 30 and 31 for holding the substrates of the substrate holders 27 and 28 are formed at the same level.

One substrate holder 56 is fixed so as not to move, and the other substrate holder 57 has guide protrusions 60 provided on its lower surface that engage with the guide grooves 55, so that the other substrate holder 57 is immersed in the guide grooves 55. I'm starting to be able to move. Reference numeral 61 denotes an operating threaded lever, to which a handle 62 is attached.By rotating this handle 62, the substrate holders 56, 57
The spacing can be adjusted freely.

Next, the operation will be explained. First, the carrier section 20 positions the carrier 22, and the carrier 22VC.
After adjusting the distance between the provided board holders 27 and 28 to a distance that will hold the printed circuit board 8 on which the components to be soldered are mounted, the board holders 56 and 57 of the board mounting device 50 are adjusted to match this distance. Determine the interval and lock it using a locking mechanism (not shown) to prevent it from changing during operation.
Next, the printed circuit board 8 to be soldered is placed on the board holder 5.
6 and 57 from the direction of arrow D, and insert the grooves 30 and 3 in the substrate holders 2r and 28 of the carrier 22.
Insert it to the specified position of 1. At this time, since the grooves 58, 59 and 30, 31 are set at the same level, the printed circuit board 8 can be inserted easily and reliably. This Fl. Therefore, the printed circuit board 8 is mounted on the carrier 22.
will be installed. Next, when the stoppers 43 and 44 are raised, the carrier 22 is moved forward in the direction of arrow E by the auxiliary chains 41 and 42, and the locking piece 37 is moved forward as described above.
The pin 11 engages with the pin L39 again, and thereafter the carrier 22 is transported by the transport chain 10 and sequentially passes through predetermined steps to complete the desired soldering.

The carrier is equipped with a pair of board holders that are arranged in the same direction as the conveyance direction and the page angle, and the printed circuit board is placed at a predetermined position where it is to be removed from the processing line, and the carrier is moved. We have equipped a board mounting device that attaches and detaches a printed circuit board by pushing it into the grooves of a pair of board holders from a direction perpendicular to the board mounting device. A printed circuit board can be attached to the

In addition, to remove the printed circuit board after soldering, the printed circuit board is automatically held in the board mounting device by pushing out the printed circuit board on the carrier, and then it can be easily removed by pulling it further outward. can. As described above, according to the present invention, the printed circuit board can be mounted and removed by the board mounting device.
This method has excellent advantages, such as eliminating the need to adjust the mounting of printed circuit boards individually, allowing correct mounting in a short time, and preventing damage to the printed circuit boards.

[Brief explanation of the drawing]

FIGS. 1A and 1B are plan views and side views showing the configuration of a conventional carrier, FIG. 2 is a plan view showing the configuration of a soldering device using the carrier of FIG. 1, and FIG. FIG. 4 is a perspective view showing details of the main part of FIG. 3, and FIG. 5 is a partially detailed side view of FIG. 4.

Claims (1)

[Claims] 1. A carrier on which a printed circuit board is removably attached and equipped with transport wheels on both sides, a transport chain to which the inside of the carrier is removably locked, and a transport rail on which the transport wheels of the carrier are guided. and a solder layer provided at a predetermined position below the transport rail, wherein the carrier has opposing grooves that are perpendicular to the transport direction and that hold the printed circuit board. , a pair of substrate holders are provided in which the length between the grooves can be freely adjusted, and the printed circuit board is held in the pair from a direction perpendicular to the traveling direction of the carrier at a predetermined position where the printed circuit board is to be removed from the processing line. 1. A printed circuit board soldering device characterized by comprising a board mounting device that can be attached and detached by being pushed into a groove of a board holder.