JPS5836443Y2 - automatic soldering device - Google Patents

Description

[Detailed description of the invention] The present invention relates to an automatic soldering device in which a carrier holding a board between claws moves on a rail by a chain drive, descends onto a soldering tank, and solders the lead wires of the board. After soldering, it is automatically raised and moved to a predetermined position.

As shown in Fig. 8, in a conventional automatic soldering device, a carrier having front and rear rotating wheels spaced at equal intervals across the width of the rail moves on a single rail, and attaches a substrate to a solder tank in a valley provided in the rail. When the lead wires are soldered, they are immersed in the solder bath from the front, and the soldering work is not done on average.

In other words, in order for the lead wires of all boards to be immersed, it is essential that the surface of the solder liquid in the solder bath be kept in a mirror-like state, that is, horizontal. Therefore, the solder bath must necessarily be made longer.

Furthermore, in order to achieve good soldering by dipping the lead wires of the board in one go, the slopes of the valleys must also be gentle, so there is an unavoidable drawback that the entire device becomes large.

The present invention aims to eliminate these drawbacks and enable proper soldering.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

Reference numeral 1 denotes a solder box, and a solder tank 2 is arranged in the center of the solder box 1.

The surface of the solder liquid 3 in this solder tank 2 is the solder box 1.
It is arranged slightly below and close to the top plate 4 of the.

Furthermore, an instrument panel and a switch operation panel A are arranged in front of the side plate 5 of the solder box 1.

On the top plate 4 of the solder box 1, an inner rail 6 is fixed outwardly along the longitudinal direction of the solder tank 2.

This inner rail 6 has a valley portion 8 shorter than the length of the solder tank 2 formed in the center thereof.

This valley part 8 consists of a descending slope 9, a flat surface 10, and an ascending slope 11.
When the carrier 19 moves at the same angle as the round bar 21
．． A peak T having a height that does not touch 21' is integrally provided.

Outside and adjacent to the inner rail 6, an outer rail 7 parallel to and of the same height as the inner rail 6 is fixed.

A valley portion 8' is cut into this outer rail 7, and the descending slope 9' is lower than the descending slope of the inner rail 6.
The round bars 21 and 21' of No. 9 are formed to be shorter by a distance l, and the descending slope 9' is formed at the same angle as the descending slope 9.

This descending slope 9' is followed by a flat surface 10' which is shorter by a distance l than the flat surface 10 of the inner rail 6, and which is followed by the flat surface 10' at the same angle as the ascending slope 11. An ascending slope 11' is provided in parallel with this.

Reference numeral 12 denotes a support plate fixed to the upper end of the side plate 5 located outside the outer rail 7. Inside the support plate 12, there is an outer support plate having the same width as each of the outer rails 7 and the inner rails 6. A movable rail 13 and an inner movable rail 16 are arranged.

Of these, the outer movable rail 13 is arranged so as to be located on the center line of the outer rail 7, and the inner movable rail 16 is arranged so as to be located on the center line of the inner rail 6, and the holes 15' and 15'' are the same. rotatably pivoted to the support shaft 14;
The inner movable rail 16 is fixed via a collar 15 so as to rotate in conjunction with the outer movable rail.

The vertical side movable rail 13 is pushed up by an outer groove wheel 24 and an outer roller 26 driven by a chain, and is returned by its own weight after the round bar 21 passes the inner movable rail 16, and is formed in a triangular shape. The surface on the descending slope 9' side is at an angle where the outer diameter of the groove of a full car 24.25 and the outer diameter of the rollers 26, 27 having the same outer diameter can easily enter, that is, the groove wheels and rollers move on the descending slope. The flat end apex is formed to be in contact with the point where the descending slope 9' and the flat surface 10' meet.

Further, the inner movable rail 6 is arranged parallel to the outer movable rail 13, and the tip thereof engages with the slope T' of the mountain portion T when the rail 13 is in a fixed position as shown in FIG. In this case, the upper surface T// is formed so as to have the same slope angle as the ascending slope ]1.

Further, behind this inner movable rail 16, a relay rail 17 is fixed to the support plate 12 with a pole +-14' on the same center line as the inner rail 6 at a certain distance and whose upper surface is equal to the height H of the inner rail. At the same time, behind the relay rail 17, an intermediate movable rail 18 is connected to the support plate 12 via the shaft 14''.
It is pivoted to.

Reference numeral 19 denotes a carrier in which claws 23 for holding the base are provided on the inner frame of the outer frame 20, and round bars 21, 21' are provided at the front and rear ends of the outer frame 20 of the carrier 19, and the front side An outer groove wheel 24 is rotatably connected to the round bar 21 on the chain 29 side at a spacing between the outer rails 7. An outer roller 26 having an outer diameter is similarly rotatably mounted.

Further, on the rear round bar 21', an inner groove wheel 25 and an inner roller 27 having the same configuration as the outer groove wheel 24 or the outer roller 26 are installed at intervals between the inner rails 6.6, and an inner groove on the chain 29 side. An inner roller 27 is rotatably pivotally mounted on the other side of the wheel 25.

Furthermore, a sprocket 22 is formed at the tip of the front round bar 2 on the chain 29 side.

Reference numeral 29 is a chain driven by a motor 30 and installed parallel to the outer rail 7, so that the chain 29 rotates between chain gears 31, 31'.

The sprocket 2 is attached to the solder bath 2 side of the chain 29.
One pin 35 is implanted to engage with the pin 3.
5 moves between the inner chain guide rail 33 and the outer chain guide rail 34 so as to move along the same curve as the upper surface of the top side rail 7.

Also, at the right end of the chain 29, the carrier 19
When the front round bar 21 reaches the right end, the sprocket 22
The pin 35 is arranged so as to move below the central axis.

In the present invention constructed as described above, the pins 35 of the chain 29 are connected to the sprockets 1 to 22 of the front round bar 21 by the drive of the chain 29, and the rollers and groove wheels move on the inner and outer rails 6°7. When the outer groove wheel 24 and the outer roller 26 advance on the descending slope 9' of the outer rail 7, they push the outer movable rail 13 around the support shaft 14, and when they pass the top of the rail 13, the outer movable rail 13 is returned to its original position.

As the outer rollers 26 and the outer groove wheel 24 pivotally connected to the front round bar 21 move toward the apex of the ascending slope 11' of the outer rail 7, the inner rollers 27 and 24 pivotally attached to the rear round bar 21' move forward. The groove wheel 25 ascends the slope T' of the mountain portion T.

Further, the outer roller 26 and the groove wheel 24 are connected to the ascending slope 11'.
When further raised to near the apex, the inner roller 27 and the groove wheel 25 advance from the slope T' to the upper surface T'' and rise.

After the inner rollers 27 and the groove wheel 25 reach the top of the upper surface T//, they pass through the relay rail 17, lift and pass the intermediate movable rail 18, and then proceed on the flat surface of the inner rail 6. The carrier 19 is arranged to advance in the order a to g in FIGS. 6 and 7.

When the sprocket 22 of the front round bar 21' of the carrier 19 reaches the right end, the pin 35 is attached to the sprocket 2.
It is set to be automatically removed from 2.

Further, when the outer frame 20 of the carrier 19 becomes parallel to the flat surface 10.10', the stop switch 36 is activated, the chain 29 is temporarily stopped, and the lead wire of the board is immersed in the solder bath 2.

After the lead wire is immersed for a certain period of time, the chain 29 is driven again, and the carrier 19 moves in the traveling direction.

In order to ensure good soldering, an infrared lamp 37 is installed near the left side of one side of the soldering bath 2 to heat the lead wires to a certain temperature before soldering, and the other side of the soldering bath 1 is heated to a certain temperature.
A cooling fan 38 is installed near the right side of the board to dry it after soldering.

According to the present invention, when the outer frame 20 of the carrier 19 becomes parallel to the flat surfaces 10 and 10' of the valleys 8 and 8' of the rail, the lead wires are immersed and soldering is performed at once, so that a good Soldering is performed.

In addition, since the rollers and groove wheels of the carrier that are moved by a chain drive move on two rails, the length of the soldering tank is shortened, so less soldering fluid is required, which can help reduce costs. It became.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a front view, Fig. 3 is a left side view, Fig. 4 is a sectional view taken along line AA in Fig. 1, Fig. 5 is a partial perspective view of the valley, Fig. 6 is an explanatory diagram of the operating state of the movable rail, Fig. 7 is an explanatory diagram of the moving state of the carrier, and Fig. 8 is a schematic explanatory diagram of a conventional soldering device. , FIG. 9 is an explanatory diagram showing the relationship between the intermediate movable rail, the inner movable rail, the wheels, and the rollers. 1... Solder box, 2... Solder tank, 6... Inner rail, 7... Outer rail, 8, 8'... Tanibe, 9°9′...
・Downhill slope, 10.10'...Flat surface, 11.
11'... Rising slope, 12... Support plate, 13... Outer movable rail, 15...
Color, 16... Inner movable rail, T...
... Mountain part, T' ... Slope, 17 ... Relay rail, 18 ... Intermediate movable rail, 19 ...
...Carrier, 20...Outer frame, 21゜2
1'...Round bar, 22...Sprocket, 24...Outer groove wheel, 25...Inner groove wheel, 26...Outer side Roller, 27...Inner roller, 29...Chain, 30...Motor, 31°31'...Chain gear, 33...
...Inner chain guide rail, 34...Outer chain guide rail, 35...Pin, 36
...temporary stop switch, 37...heater 38...cooling fan.

Claims (1)

[Scope of utility model registration request] In an automatic soldering device, in which objects to be soldered held by carriers are transferred while always maintaining a horizontal state through a conveyor line consisting of a pair of inner and outer rails, the solder box 1 is placed in the center of the solder box 1. A solder tank 2 arranged so that the surface of the liquid is close to the upper surface 4, a trough 8 provided on both sides in the longitudinal direction of the solder tank 4, an inner movable rail 16 that rotates in the trough 8, and a fixed relay. An inner rail 6 in which a rail 17 and a rotating intermediate movable rail 18 are disposed, and a trough 8' parallel to the inner rail 6 and shifted in phase from the trough 8 at the same height are provided. ' is connected with a collar 15 so as to interlock with the inner movable rail 16, and a support shaft 1
The outer rail 13 is pivotally attached to the support plate 12 at 4 and is pushed up by an outer groove wheel 24 driven by a chain and an outer roller 26, and the outer movable rail 13 returns by its own weight after the round bar 21 passes the inner movable rail 16. 7, an outer groove wheel 24 is pivotally attached to the chain 29 side of the front round bar 21 on the outer frame 20 at a spacing between the outer rails 7. An outer roller 26 with the same outer diameter is pivotally mounted, the tip of the front round bar 21 located on the chino 29 side is shaped into the sprocket 22, and an inner roller 6,6 is attached to the rear round bar 21'. A base clamping pawl 2 with an inner groove wheel 25 and an inner roller 27 pivotally connected to the round bar 21 at an interval between
3, and one pin 35 that engages with the sprocket 22 is implanted on the solder bath 2 side, and the outer chain guide rail 34 is moved so that the pin 35 moves parallel to the upper surface of the outer rail 7. and a chain 29 that drives between the inner chain guide rail 33 and the inner chain guide rail 33.