JPS59202166A - Automatic soldering device - Google Patents

Abstract

PURPOSE:To enable individually separated supply of works and to deal preliminarily with the jam of the works in tracks, etc. by providing freely movably a work moving base between a continuous work supplying part and a track type transferring mechanism. CONSTITUTION:A work moving base 44 is horizontally moved from an auxiliary track 43 to a prescribed position once and thereafter the base ascends to the position where the base is connected to a track 17 by the timing with a transfer pin 23 and the base enters the spacing between the pin 23 and the pin 23. The pin 23 pushes an internal work 27 into the track 17 in the stage of moving through the work fitting groove 73 of the base 44.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a dual in-line packaged integrated circuit (
Automatic soldering is related to an apparatus that performs soldering to form a solder film on the lead portion of a workpiece such as an IC.

[Technical background of the invention and its problems]

Conventionally, when soldering the leads of a workpiece such as an IC, the workpieces are loaded into a jig that fixes and holds a large number of the workpieces using multiple support rods, and this jig is used for soldering by multiple conveyors on a line. By attaching each to a holder and moving this holder on the soldering line, the solder film is made to adhere to the lead portion of each workpiece.

However, the work of loading a large number of workpieces onto a jig and the work of attaching this jig to a holder must be done manually.
The same thing happens when removing it, which puts a huge burden on the worker and also hinders full automation.

Therefore, the applicant of the present invention has developed a track-type transfer mechanism that slides the main body of the work in a track consisting of a plurality of guide members and transfers it through a plurality of units related to soldering, and has solved the above problems. I tried to solve it.

In such a truck-type transfer mechanism, pushing a large number of workpieces into the truck at once in close contact can be considered as an easy feeding method, but in this way, multiple workpieces cannot be continuously transported in the truck. Sometimes the workpiece becomes oblique and gets stuck in the middle of the track and cannot move forward. Also, adjacent workpieces may become integrally joined and cannot be separated.

[Purpose of the invention]

The present invention enables such automatic soldering to separate the workpieces into individual pieces and supply them to the track-type transfer mechanism of the apparatus.

[Summary of the invention]

The automatic soldering apparatus of the present invention includes a continuous workpiece supply section that supplies workpieces having lead parts to be soldered in a connected state, and a workpiece continuous supply section that is installed at a distance from the continuous workpiece supply section and that connects a plurality of main bodies of the workpieces. A track-type transfer mechanism that slides in a track consisting of a guide member and transfers it through a plurality of units related to soldering, and a track-type transfer mechanism that is movably provided between the continuous work supply section and this track-type transfer mechanism, The structure is characterized in that it is equipped with a 9-way separation mechanism having a movable platform that individually supplies the workpieces in the supply section to a truck-type transfer mechanism, and the workpiece movable platform continuously supplies the workpieces. By reciprocating between the part and the truck-type transfer mechanism and intermittently supplying the workpieces to the truck-type transfer mechanism, a constant interval is ensured between the works transferred by the truck-type transfer mechanism.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

As shown in Figures 1 and 2, the fluxing unit (1), which consists of a jet fluxer, and the air knife (2)
, a soldering unit (3) consisting of a jet soldering cylinder;
A cleaning unit (4) consisting of a cleaning tank and a shower pan, a drying unit (8) consisting of a spin type dryer (6) and a drying heater (7) on a hot air heater (5), and a hood (9). Arrange. This hood (9) has exhaust ports (not shown) at multiple positions on the top surface.

In addition, a track-type transfer mechanism αD that sequentially transfers the workpieces to be soldered is installed over the entirety of each unit related to this soldering through the upper side of each unit, and the workpiece is placed at the starting end of this track-type transfer mechanism Ql). Supply unit Q
3, and a work collection unit αj is provided at the terminal end of the truck-type transfer mechanism αυ. A4 is a chain rotating drive device of the track-type transfer mechanism aυ.

As shown in FIG. 3, the truck-type transfer mechanism aυ is
6 sets of tracks t17) and a sprocket as QIJ supported parallel to this track aη by a guide rail (not shown) above this track (17) and pivotally supported on both ends of the track αη. Two rows of chenos (2+) wrapped endlessly around the drive shaft (2) and driven in rotation by the sand sprocket α, and a mounting plate built at a partial pitch over the entire two rows of chenos (01). (The transfer pins (C) are made of a material that can withstand the corrosive action of flux and does not adhere to solder.
For example, it is made of a titanium alloy or the like, and the Cheno Qυ and the mounting plate I:2 are also made of stainless steel or the like for the same reason.

As shown in FIGS. 4 and 5, each set of tracks Q7) slides inside the main body (IC package) of a workpiece (5) such as a dual in-line package integrated circuit having a lead portion (E). It consists of six guide rods (c) as guide members that are movably fitted together, and the intermediate portions are supported by support plates Q0 at regular intervals. The guide rod and support plate are also made of a material that can withstand the corrosive action of flux and does not adhere to solder, such as titanium alloy or tungsten alloy.

The support plate has an inverted gate-shaped workpiece insertion hole y<(to) according to the shape of the above-mentioned workpiece, and allows the workpiece to be freely moved through this y<(to). (to) has a notch 01) at the top, and the transfer bin (c) can be moved freely through this notch 01), and as shown in Figures 4 and 5, the two upper It engages with the rear end of the workpiece (5) in the pin (c) track aη inserted between the rod devices, and the pin (23) presses the 9-ri (5) to cause it to slide. Note that the thread groove 0 formed on the upper part of the pin (c) is screwed into the mounting plate (24).

Returning to FIGS. 1 and 2, the work supply unit a2 supplies the workpieces individually to the truck-type transfer mechanism aυ, and has a magazine (35α) loaded with a large number of the workpieces in six rows. One magazine storage section (to) that is stacked and stored in multiple stages, and an empty magazine (35
A magazine moving mechanism comprising a magazine holder (to) provided movably across the other magazine storage part (3η) and the other magazine storage part (c37) for storing grapes in a stacked manner. The magazine (S50) is moved to the intermediate position 0 by the OI and is placed at the left end side of the stationary magazine (S5C). A feeder (40) that pushes out the workpiece in the groove to the opposite side, and a magazine (3) at the intermediate position (0)
The auxiliary track (43) is fixed at a fixed position and is continuously connected to the auxiliary track (43) and continuously receives the workpieces pushed out from the magazine (35C) by the feed mechanism (4). The above-mentioned truck-type transfer mechanism (workpiece transfer platform that separates and supplies the workpieces to 1B)
It is formed by a work separation mechanism (c) having 44.

As shown in FIG. 3, the magazine moving mechanism (to)
A horizontally movable architrave, which is horizontally movable along two guide shafts, is driven forward and backward by a ball screw 6υ that is rotated in either forward or reverse direction by a stepping motor 61. g) 0
7) to stop at the lower position (A)■'' and its intermediate position C, and the vertically moving table is controlled to stop at the lower position (A) A hydraulic cylinder (not shown) K provided on the bottom surface of the horizontal moving table (4)
Therefore, this vertically movable table 62 is made to move up and down, and the pair of magazine pedestals (to) which hold and clamp one magazine C35+ are fixed on this vertically movable table 62, and this magazine pedestal C The magazine (c), ramp or clamp is released by a fixed gripping part 54 on one side provided on the strip and a movable gripping part f54 on the other side that is opened and closed by a fluid pressure cylinder (not shown). .

Similarly, as shown in FIG. 8, the feed mechanism (43 is a slide guide box f571 supported in a fixed position).
The six integrated feeders noIk are slidably fitted to guide the advance and retreat of each feeder (4I), and
Rack (to) provided on the bottom side of each feeder (41)
A long binion (60) rotated by a stepping motor (5gI) is engaged with the binion (60).
+! 11- Each feeder (4I) is designed to move forward and backward at the same time by rotating in either the forward or reverse direction.

Similarly, as shown in FIG.
3) horizontally movable table 164)
A vertically movable table 6η is provided so as to be movable up and down by means of a plurality of guide means in the vertical direction with respect to a hydraulic cylinder (moved forward and backward by a surface, and this horizontally movable table 64), and a horizontally movable table (64). A hydraulic cylinder (not shown) provided on the lower surface of the vertically movable table moves up and down, and one workpiece in each row is supported and moved on the vertically movable table 6η. Fix the stand (44).

As shown in FIG. 3, the magazine 01, the auxiliary truck (43) and the workpiece moving platform (all are connected to the workpiece insertion hole (to) of the support plate of the truck (17)).
11 rows of workpiece fitting grooves σ1)σ and σ1 having the same cross-sectional shape as the cutout portions ell) are provided, and the workpiece fitting grooves συa2σj of each row are continuously connected at the end surface. In addition, suction holes (not shown) are opened in the bottoms of the workpiece fitting grooves (7, 1) of each row of the workpiece movement table 0, and when the workpiece is moved by the workpiece movement table (4IO), the suction holes are used. It is designed to suction and hold the workpiece with negative pressure in each row. σXun is a suction vibrator for air suction.

Next, to explain the operation of FIG. 3, when the operator inserts multiple (20 to 30) magazines (351Z) into one magazine storage section 00 and starts the operation of the device, this Due to the related operation of two sets of upper and lower automatic stoppers (not shown) provided at the bottom of the magazine storage section (top), only the lowest one magazine (top) is released from the bottom opening of the magazine storage section. At the same time, the magazine cradle c! was raised at the lower position of the magazine storage section (to)! The mallet quietly receives and clamps this magazine, and after descending, it moves horizontally to intermediate position 0 and stops.

Next, the feeders (41) of each row of the work fitting grooves ff1Hc of each row of the stationary magazine (s5C) at the intermediate position (2) are inserted to extrude the workpieces in the grooves συ. This feeder (4
The initial feed amount of υ is magazine (35C) in each row.
One workpiece at the forefront of the workpiece passes through the auxiliary truck (43) and is transferred to the workpiece moving platform (4) connected to this auxiliary truck (4 rows).
The setting is made so that each workpiece is continuously pushed until step 4) is reached, and thereafter the feed for one workpiece is intermittently performed. Workpiece moving table (44) that supports one workpiece in each row
The workpiece is moved horizontally to position -) by suctioning the workpiece under negative pressure, and then raised to a position (yl) connected to the track aη and stopped, and the negative pressure suction of the workpiece is released.

The rear ends of the workpieces in the six rows of workpiece fitting grooves a3 of the workpiece moving table (44) are pressed by the six transfer pins 231 rotated downward in the sprocket QI, and the workpieces are pushed into the workpiece fitting grooves σj At the same time, it is pushed into the six guide rods of the track (Iη),
It is transported while sliding within this guide rod (c).

The empty workpiece moving platform (44) is moved to the auxiliary truck 03.
Then, the feeder (41) returns to the continuous position and feeds one workpiece to each row again by feeding one workpiece from the feeder (41).The feeder (41) feeds one workpiece to each row again, and transports it again to the track 0η and the continuous position (y), and transfers that workpiece to the next position. Push it into the track αη using the transfer pin (c). After repeating this operation many times and feeding all the works in one magazine (35C) one by one into the track αη at a partial pitch, the feeder (4I) is completely retreated from the magazine (35C), Place this empty magazine (35C) in the middle position in the other magazine storage compartment G? )
Lower position (move horizontally to 81 and then raise it,
This magazine storage part (9) is pushed into the interior through the lower opening, and the clamp is released by the movable grip part 54 of the magazine holder (to), and the automatic stopper (not shown) provided at the bottom of the magazine storage part (9) is released. 3) locks this empty magazine (354).

The empty magazine holder (to) returns to the position shown in FIG. 3, and a new magazine is taken out from one magazine storage part (to), and the above operation is repeated thereafter.

When the workpiece transferred in the above track (Iη) passes through the flux jet unit (1), the entire lead part (a) is coated with flux, and the excess flux is removed with the air knife (2). When the soldering process passes through the jet solder in the unit (3), the entire lead part Q mount is soldered,
As a result, a solder film is formed on the lead part @, residual flux, etc. is washed off with a cleaning unit (41K), and the cleaning liquid is dried in a drying unit (8). 31
will be collected.

The structure of the work collection unit α3 is almost the same as that of the work supply unit Q, and the difference is that the feed mechanism (corresponding to 42) in the work supply unit α2 is located under the terminal end of the track-type transfer mechanism αυ. It is a point provided on the side, and the workpiece in the workpiece moving table ση is moved from the truck side to the intermediate position (0 empty magazine (351
? ) in order. In this work collection unit α3, six tubes may be provided instead of the magazine, and the work may be collected into these tubes.

Note that the six sets of tracks (L7) do not necessarily have to be linear throughout; for example, in unit (1) for fluxing and unit (3) for soldering, the tracks Cη may be curved downward in a concave shape. If K is carried out in this way, it is not necessary to use a jet flow type fluxer and a jet flow type solder tank, and a vertically moving type solder tank or the like can also be used.

In this case, it is needless to say that a part of the Cheno Qυ is also arranged in a downward concave shape like the track αη.

Next, FIG. 6 shows an enlarged view of the work separation mechanism (451), in which the horizontal moving table 64 is slidably fitted into two guide shafts via slide bearings @0. At the same time, a hydraulic cylinder for horizontal movement [
This horizontal moving table is equipped with a hydraulic cylinder (c) for vertical movement and a slide bearing (66a) for vertical movement guidance, and this slide bearing (66G) is connected to 3 sides of the piston rod of 51. It is fitted into the slide shaft (664) of the vertically movable table portion, and the vertically movable table 6'7) is guided in the vertical movement by the fluid pressure cylinder (c).

As shown in the off-line diagram, the lower part of the workpiece moving table (441)
A ventilation hole is bored from both left and right sides of aa), and a suction hole (2) is communicated from the ventilation hole to the upper surface of each workpiece support convex part. The above ventilation hole (A) has two holes on the left and right in the center.
It is divided and formed into parts, and the suction vibe σ4 is connected to the left and right ends via a bent pipe (C).

Then, by communicating this suction vibe σ4 with a vacuum pump, air is sucked in from the suction hole (c) via K, and the workpiece (5) is suctioned and held by negative pressure.

FIG. 8 shows the operation of transporting the workpiece to the truck aη by the workpiece moving table. This workpiece moving table (
44) moves horizontally from the auxiliary truck (from 43 to the position), and then moves to the truck Q? due to the timing with the transfer bin C23. ＞ rises to the position (y) where it is connected,
The transfer bottle (c) and the transfer bottle fit between.

The transfer bin (c) is the workpiece fitting groove f of the workpiece moving table 04).
At the stage of moving through f3ft, the internal workpiece (5) is pushed into the track α7).

In this embodiment, the magazine (35c) and the auxiliary track (43) are used as a workpiece continuous supply unit, but if the auxiliary track H3 is removed and the magazine (35c) and the workpiece moving table are directly connected, from K, Only the magazine (35c) may be used as a continuous work supply section.

〔Effect of the invention〕

According to the present invention, since the workpiece moving table is movably provided between the continuous workpiece supply section and the truck-type transfer mechanism, the workpieces can be separated and supplied individually to the truck-type transfer mechanism by the workpiece moving table. Therefore, it is possible to deal with the possibility that the workpiece may get stuck in the truck at the stage of supplying the workpiece.

[Brief explanation of the drawing]

The figures show one embodiment of the automatic soldering device of the present invention, in which the top view is a plan view of the whole, the second figure is a front view of the whole, the third is a perspective view of the workpiece supply unit, and the fourth figure is a front view of the whole. The figure is a perspective view of a part of the truck, Figure 5 is a sectional view of the truck, Figure 6 is a perspective view of the work separation mechanism, Figure I117 is a sectional view of the workpiece moving platform, and Figure 8 is the workpiece moving platform and transfer bin. It is an explanatory diagram showing the effect of. +1) +3)...Unit related to soldering, Q9.
・Track-type transfer mechanism, ←η... Track, lead part, penalty... Work, (a)... Guide rod as a guide member, (336) (43... Magazine as a continuous work supply part, and Auxiliary track, (44)・Φ
Workpiece moving table, (c) - Workpiece separation mechanism. JP-A-59-2021G6 (7)

Claims (1)

[Claims] [11 In a track consisting of a continuous workpiece supply unit that supplies workpieces in a connected state having lead parts to be soldered, and a plurality of guide members that are provided at a distance from this continuous workpiece supply unit and that are the main bodies of the workpieces. A track-type transfer mechanism that slides and transfers a plurality of units involved in soldering, and a track-type workpiece transfer mechanism of the workpiece continuous supply section that is movably provided between the workpiece continuous supply section and this track-type transfer mechanism. An automatic soldering device characterized by comprising a workpiece separation mechanism having a workpiece moving table that individually supplies the workpieces to a transfer mechanism.