JPH0419149B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for guiding and transporting boards in an automatic soldering machine, and more particularly, the present invention relates to a device for guiding and transporting boards in an automatic soldering machine, and particularly for handling boards that have been separated from a carrier after primary soldering and cutting of lead wires have been completed in a dip-type soldering machine. The present invention relates to a guided conveyance device for a board, which allows a board to be smoothly transferred to a jet soldering device or the like without manual intervention.

Conventional technology Conventionally, there have been dip-type soldering devices suitable for soldering electronic components with long lead wires, in which a lead wire cutting device is integrated into the back-end process, and in addition to this, the circuit board is attached to a carrier. Mama U
A so-called round type automatic soldering device, in which a jet-type soldering device is integrated and arranged on a turned conveyance path, is in practical use.

However, with this round type automatic soldering device,
During the entire process, the board is transported while attached to the carrier, so even though the board can be transported in close contact with jet soldering equipment, there is a gap between the boards due to the extra length provided by the carrier. As a result of unnecessary intervals, the number of substrates passed per unit time is reduced. In other words, since the conveyance speed of the board in a jet soldering tank is determined to be, for example, 1200 mm/min, the speed of the conveyor in the jet soldering device is kept constant regardless of the presence or absence of a carrier. I have to keep it. Therefore, e.g. length
For a 400mm board, if there is a carrier, the length will be 500mm including the edge of the carrier.
Furthermore, if the distance between the carriers is 200 mm, the two boards will occupy a length of 1200 mm, and a jet soldering bath with a speed of 1200 mm per minute can only process two boards per minute. Therefore, even if dip type soldering equipment has a tact time of 20 seconds and has a processing capacity of 3 pieces per minute, it will be possible to process 2 pieces per minute to match the capacity of jet type soldering equipment. As a result, production efficiency drops to two-thirds.

Therefore, if a round type automatic soldering machine is not used, the board with a 20 second takt time after cutting the lead wires is manually removed from the carrier, and the board is placed on the conveyor of the jet soldering machine in close contact. I inherited it and made it possible to process it in the same 20 second tact time.

However, this method requires a total of three workers: one person for the dip-type soldering device and the cutter device, one person to separate and transport the boards, and one person for the jet-type soldering device. Although it has higher production efficiency than automatic mold soldering equipment, it has the disadvantage of requiring three times as many workers.

Furthermore, in the prior art, there is currently no device that can automatically separate the substrate from the carrier and transport it to the outside of the carrier's return mechanism in a timely manner. In addition, the substrates separated from the carrier will be scattered over a wide range to the left and right in the direction of travel, and will also be oriented in arbitrary directions. Although it is not possible to automatically transport the board into the jet soldering machine that performs soldering, it has not been possible to obtain such a guided conveyance system for the board with conventional technology, so it is necessary to separate it from the board in the dip type soldering machine. It has been impossible to automatically transfer the soldered board to a jet soldering device.

Furthermore, Japanese Patent Publication No. 51-43668 discloses a device for correcting the skew of a plate-like object, but the conventional example has a conveyor belt for conveying the plate-like object, and a wide entrance side of the conveyor belt and an outlet side. Although it is equipped with a vertical belt that is provided to narrowly regulate, the characteristics of this invention are that
As in the present invention, the plate-shaped object is floated by air, the speed of the vertical belt is higher than the speed of the conveyor belt, and the vertical belt is movable in the width direction and the traveling direction of the conveyor belt.
There is no disclosure of the idea of making the speeds of the pair of wrapped transmission members different. Therefore, the invention of the prior art example is a different invention whose structure is completely different from the invention of the present application.

Furthermore, Japanese Utility Model Publication No. 56-10730 discloses a device for transporting printed wiring boards, but in this conventional example, the printed wiring board is forcibly transported by supply rollers on both sides of the board. In the present invention, such a roller is not used as an essential component of the invention, so the configuration of the conventional example is completely different from that of the present invention.

Furthermore, Japanese Utility Model Application No. 60-76099 discloses a printed board conveyance and positioning device, but this conventional example merely discloses that the printed circuit board is conveyed by a conveyor, and also has positioning holes in the board. Since it is intended to perform various controls by providing a positioning pin and inserting a positioning pin into it, the purpose, structure, and operation and effect thereof are completely different from the present invention.

Purpose The present invention was made in order to eliminate the drawbacks of the prior art described above, and its purpose is to provide a wide flat belt that carries a substrate and runs in one direction, and a wide flat belt that carries a substrate and runs in one direction. A pair of substrate guiding members that guide the substrates to a predetermined exit position by restricting the inlet side to be wide and the outlet side to be narrow, and act on the sides of the substrates at a speed higher than the speed of the flat belt to align the directions. a pair of wrapped transmission members, the wrapped transmission member runs parallel to the flat belt at a faster speed than the wrapped transmission member that runs at an angle with respect to the flat belt among the pair of wrapped transmission members. By setting the speed of the member high, it is possible to correct the inclination of the board that is being conveyed at an angle to the flat belt due to the high speed of the winding transmission member running parallel to the flat belt. It is to be. Furthermore, with the above configuration, the board separated from the carrier can be transported to the next process, for example, a secondary soldering device, without any manual intervention. The object of the present invention is to enable a soldering device and a jet soldering device to be connected linearly as an automated line, thereby saving the labor of one worker and improving production efficiency.

Configuration In short, the present invention comprises: a wide flat belt on which a substrate is placed and runs in one direction; and a pair of flat belts that have an inlet side wide and an outlet side narrowly to guide the substrate to an exit at a predetermined position. a pair of winding transmission members provided in the substrate guiding member and acting on the side surfaces of the substrate at a speed greater than the speed of the flat belt to align the directions thereof; Among the wrapped transmission members, the speed of the wrapped transmission member that runs parallel to the flat belt is set higher than the speed of the wrapped transmission member that runs at an angle with respect to the flat belt. It is something.

The present invention will be explained below based on embodiments shown in the drawings. A substrate guiding conveyance device 1 according to the present invention includes a wide flat belt 2, a pair of substrate guiding members 3 and 4,
A pair of winding transmission members 5 and 6 are provided.

The wide flat belt 2 is configured to run in one direction as shown by the arrow A on which the substrate 9 is placed, and is composed of a cloth-like soft belt, and the soft belt prevents the adverse effects of static electricity on the substrate 9. It is constructed of a material that does not cause A driven pulley 13 whose rotary shaft 12 is supported by a center-to-center distance adjustment mechanism 11 at the inlet 10, and a driven pulley 13 rotatably supported by a base 15 at the outlet 14 side and driven by an appropriate drive source. It is wound around the drive pulley 15 that is driven. The width thereof is, for example, approximately equal to the width of the outlet 19 of the substrate separating and conveying device 18 provided at the rear of the dip type soldering device 16, so that the substrate 9 can be attached to the flat belt 2 from any position.
It is formed wide so that it can be placed on top of it.

The pair of substrate guiding members 3 and 4 are configured to guide the substrate 9 to the outlet 14 at a predetermined position by restricting the flat belt 2 to be wide on the inlet 10 side and narrow on the outlet 14 side. 3 is disposed parallel to the traveling direction of the flat belt 2, and the substrate guiding member 4 is disposed in an inclined manner so that the inlet 10 side is wide and the outlet 14 side is narrow as shown in FIG.

The pair of winding transmission members 5 and 6 are provided in the board guide members 3 and 4, respectively, and act on the side surface 9a of the board 9 at a speed higher than the speed of the flat belt 2 to align the direction thereof. The wrapped transmission member 5 is made of, for example, a toothed belt, and is wrapped around a driving pulley 20 and a driven pulley 21 that are arranged parallel to the running direction of the flat belt 2. It is arranged only in a portion that is about half of the total length of the flat belt 2.

The wrapping power transmission member 6, like the wrapping power transmission member 5,
For example, a drive pulley 22 made of a toothed belt and disposed at the same position in the traveling direction as the drive pulley 20
The substrate guiding member is wound around an intermediate pulley 23 disposed parallel to the drive pulley and the direction of movement of the flat belt 2, and a driven pulley 24 disposed near the entrance 10 of the flat belt 2. 4, its surface is configured to protrude slightly inward so as to be able to act on the side surface 9a of the substrate 9. The driving pulleys 20 and 22 are flexible couplings 2
6, and when the drive pulley 20 rotates in the direction of arrow B, the drive pulley 22 rotates in the direction of arrow C.
As a result, the winding transmission member 6 is configured to travel in the same direction as the winding transmission member 5 as shown by arrow D, and the power transmission mechanism of both drive pulleys 20 and 22 is very simple. I take it as a thing. Further, since the diameter of the drive pulley 20 is formed to be slightly larger than the diameter of the drive pulley 22, they rotate at the same rotational speed, so that the wrapped transmission member 5 running parallel to the flat belt 2 can be rotated at the same rotation speed. The winding transmission member 6 runs at a slightly higher speed than the winding transmission member 6 which runs at an angle with respect to the flat belt 2, and the speed of the winding transmission member 6 is also set higher than the speed of the flat belt 2.

Next, the board forced loading device 8 will be explained. This board forced loading device 8 is disposed between the winding transmission members 5, 6 and the outlet 14 of the flat belt 2 and the inlet 29 of an automatic soldering device, for example, a jet type automatic soldering device 28, and Both sides in the direction of movement 9
It is made up of a plurality of rollers 31 and 32 that forcibly convey a. These rollers 31 and 32 are connected to the substrate 9
For example, five to six rollers are arranged in a line on both sides of the traveling direction, and the rollers 31 are rotated in the direction of arrow B and the rollers 32 are rotated in the direction of arrow C at the same rotational speed by an appropriate drive source. The circumferential speed thereof is set to be the same as the circumferential speed of the wrapped transmission member 5. As shown in FIG. 3, the shapes of the rollers 31 and 32 include upper and lower flange portions 31a and 32a, respectively, and a cylindrical portion 31b that is recessed so that both side surfaces 9 of the substrate 9 are formed.
a is forcibly conveyed in one direction by contacting the cylindrical portions 31b and 32b, respectively.
And the feed claw 34 of the jet type automatic soldering device 28
The structure is such that the substrate 9 can be accurately guided and delivered to the groove 34a.

Further, in the substrate guiding conveyance device 1, a flat belt up-and-down mechanism 35 is provided that allows the inclination angle of the base 15 on which the flat belt 2 is disposed relative to the horizontal plane to be freely set, and the base 15 is provided with a link. 3
6 is pivotally connected by a pivot 38, and one end of the substrate guiding member 4 is rotatably connected to one end of the link 36 via a pivot 39. And the link 3
The horizontal inclination angle of the substrate guiding member 4 can be changed by rotating the substrate guiding member 6 .

Effects The present invention is configured as described above, and its effects will be explained below. For example, as shown in FIG. 1, the board 9 that has been carried out from the outlet 19 of the board separation and conveyance device 18 of the dip-type automatic soldering device 16 is placed on the flat belt 2 running as shown by arrow A. In this case, the substrate 9 is oriented in an arbitrary direction. If the corner 9d of the front end surface 9b of the board 9 comes into contact with the winding transmission member 6 of the board guiding member 4, the running speed of the winding transmission member 6 will be reduced by the flat belt 2.
, the base plate 9 rotates slightly counterclockwise as shown by arrow A2, and the side surface 9a is aligned parallel to the winding transmission member 6, and the flat belt 2 and the winding transmission member 6 are aligned. The substrate 9 is then transported in the direction of arrow A3 by the other corner portion 9 of the front end surface 9b of the substrate 9.
When e contacts the winding transmission member 5 of the board guide member 3, the running speed of the winding transmission member 5 is faster than the running speed of the winding transmission member 6, so the board 9 moves clockwise as indicated by arrow A4. flat belt 2.
are aligned parallel to the traveling direction of the vehicle and reach the exit 14 as indicated by arrow A5. Furthermore, no matter which part of the substrate 9 reaches the substrate guiding member 3 or the winding transmission member 6 first, the substrate 9 is always conveyed while being aligned in the state shown in FIG. 5, and reaches the outlet 14. It is something.

Next, the function of accurately delivering the substrates 9 aligned in this way to the grooves 34a of the feeding claws 34 of the jet-type automatic soldering device 28, for example, will be explained. 9a is a cylindrical portion 31 of a pair of rollers 31, 32;
b, 32b, is forcibly conveyed by the cylindrical portion, and is accurately delivered into the groove 34a of the feed pawl 34 as shown in FIG. Automatic soldering is performed in the soldering device 28.

Effects The present invention has a wide flat belt that runs in one direction with a substrate placed thereon as described above, and the flat belt has a wide inlet side and a narrow outlet side so that the substrate can be placed at the exit at a predetermined position. A pair of board guiding members that guide the board, and a pair of winding transmission members that act on the side surfaces of the board at a speed higher than the speed of the flat belt to align the direction thereof, and of the pair of winding transmission members. Since the speed of the winding transmission member running parallel to the flat belt is set higher than the speed of the winding transmission member running at an angle to the flat belt, the winding transmission member running parallel to the flat belt The high speed of the hanging transmission member has the effect of correcting the inclination of the substrate that is being conveyed at an angle with respect to the flat belt. In addition, the above configuration has the effect that the board separated from the carrier can be transported to the next process, for example, a secondary soldering device, without any manual intervention. It becomes possible to connect the type soldering device linearly and as an automated line, which has the effect of saving the labor of one worker and improving production efficiency.

[Brief explanation of drawings]

The drawings relate to an embodiment of the present invention, and FIG. 1 is a perspective view of the substrate guiding conveyance device as seen from the side where an operator stands;
Fig. 2 is a perspective view of the substrate guiding conveyance device seen from the opposite direction to Fig. 1, Fig. 3 is a schematic longitudinal cross-sectional view taken in the direction indicated by the - arrow in Fig. 2, and Fig. 4 is a schematic longitudinal sectional view taken in the direction indicated by the - arrow in Fig. 2. The longitudinal sectional view and FIG. 5 are plan views of the substrate guiding conveyance device. 1 is a substrate guiding conveyance device, 2 is a wide flat belt, 3 and 4 are substrate guiding members, 5 and 6 are winding transmission members, 8 is a forced substrate loading mechanism, 9 is a substrate, 9a is a side surface, and 10 is an entrance , 14 is an outlet, 29 is an inlet of the automatic soldering device, and 31 and 32 are rollers.

Claims (1)

[Claims] 1. A wide flat belt on which a substrate is placed and runs in one direction, and a pair of substrate guiding members that guide the substrate to an exit at a predetermined position by restricting the entrance side of the flat belt to be wide and the exit side to be narrow. a pair of winding transmission members provided in the substrate guiding member and acting on the side surface of the substrate at a speed higher than the speed of the flat belt to align the direction thereof; A guided conveyance device for substrates, characterized in that the speed of a winding power transmission member running parallel to the flat belt is set higher than the speed of the winding power transmission member running at an angle with respect to the flat belt.