JPH0545679B2 - - Google Patents

Description

Detailed Description of the Invention Object of the Invention [Field of Industrial Application] The present invention relates to an apparatus for fully plating short lead frames with gold, silver, nickel, copper, etc. The present invention is characterized by a means for transporting lead frames in a processing (processing) tank or an electrolytic processing (for example, electrolytic plating processing) tank, and a power supply means in the electrolytic processing tank.

[Conventional technology]

Conventionally, in a full-surface plating device for a lead frame, there are the following types of conveyance means and power supply means.

(i) As shown in Fig. 8, the lead frame 3' is
Rotating round rod-shaped upper and lower conveyor rollers 4',
It is conveyed by passing it between 4'.
The power supply means is an electrolytic treatment tank that connects the conveying rollers 4',
A short cylindrical power supply portion 20' is provided on one of the lead frames 4', and is brought into contact with both side portions 3a' of the lead frame 3'.

(ii) As shown in FIG. 8, the lead frame 3' is conveyed by rotating a chain-shaped conveying roller 4' with a concave center and passing the lead frame 3' over it. The power supply means includes another power supply roller 18' provided on the roller 4' in the electrolytic treatment tank, and brought into contact with both side portions 3a' of the lead frame 3'.

(iii) Also, as described in Japanese Patent Application Laid-Open No. 58-81997,
Some devices transport both sides of the lead frame between upper and lower feed rollers.

[Problem to be solved by the invention]

In the case shown in Fig. 8 of (i) above, if there is a slight difference in the outer diameter or unevenness of either the upper or lower conveyor rollers 4', 4', the rotation of the rollers 4', 4' will be affected. Accordingly, the lead frame 3' shifts or meanders in the lateral direction, resulting in separation from the conveyance path.

Furthermore, since the upper and lower conveyance rollers 4', 4 convey the lead frame 3' while contacting the island portion and pins, they may be deformed or damaged.

Particularly in the plating process inside the electrolytic treatment tank, when the widths of the lead frames 3' are different, the short cylindrical power supply part 20'
It may come into contact with islands and pins other than a', deforming and damaging them.

Further, in the plating process, the short cylindrical power supply part 20' becomes larger in outer diameter as the plating is electrodeposited, and on the other hand, in the degreasing process, the power supply part 20' is gradually melted and becomes smaller in diameter. Therefore, the lead frame 3' may meander and separate from the conveyance path.
It was necessary to provide a guide member for position correction and a stopper member in the middle of the conveyance path.

Furthermore, if the type of plating is harder than the copper of the lead frame base material, such as nickel, when it is electrodeposited on the short cylindrical power supply part 20', it will contact the lead frame 3' and cause the surface of the lead frame 3' to be damaged. hurt. On the other hand, if the type of plating is softer than the lead frame base material, such as gold or silver, the power supply part 2
The gold and silver electrodeposited on the lead frame 3' are scraped and turned into powder, which adheres between the pins of the lead frame 3', resulting in poor insulation. Therefore, the power supply section 20' must be replaced every short period of time, resulting in a decrease in work efficiency.

On the other hand, in the case (ii) shown in FIG. 9, the lead frame 3' passes over the concave portion at the center of the conveying roller 4', so that it can be conveyed regardless of the width of the lead frame 3'. However, since the height at which the lead frame 3' moves within the pass line, that is, the recess of the roller, varies depending on the width of the lead frame 3', it is difficult to ensure that the power supply roller 18' contacts the lead frame 3'. It was difficult.

In addition, in the device described in JP-A No. 58-81997 (iii) above, the upper and lower feed rollers are fixed to the width, so it is not possible to respond immediately when the width of the lead frame is different. .

An object of the present invention is to solve the problems of the conveyance means and the power supply means in the conventional full surface plating processing apparatus.

That is, the first object of the entire surface plating device according to the present invention is to enable easy and reliable transportation of lead frames even if the widths of the lead frames are different.

The second purpose is to prevent lateral shifting, meandering, falling off, etc. when transporting the lead frame, and to eliminate the need for providing guide members, stopper members, etc. for position correction in the middle of the transport path.

The third purpose is to eliminate deformation and damage by preventing the power supply roller from coming into contact with the island portion or pins of the lead frame, especially in an electrolytic treatment tank, when the widths of the lead frames are different.

The fourth purpose is to maintain the pass line of the lead frame, that is, the height at the time of transition, constant regardless of the width of the lead frame, and to prevent the contact of the power supply roller to the lead frame, especially in electrolytic processing baths. To ensure that this can be done.

The fifth purpose is to enable the power supply roller to be used for a long time without replacing it, especially in an electrolytic treatment tank.

Structure of the Invention [Means for Solving the Problems] The first aspect of the entire surface plating device for lead frames according to the present invention is that a pair of conveyor rollers are installed in a non-electrolytic processing tank 1 installed before and after an electrolytic processing tank 2. 4, a lower pair of conveyor roller sliding members 6, and an upper pair of presser rollers 8 are provided on each horizontal shaft 5, 7, 9 perpendicular to the direction of movement of the lead frame 3, and each of the above The conveyance roller 4 is integrally supported in the rotational direction and slidably in the axial direction on the rotating horizontal axis 5 for the conveyance roller, and is a small diameter cylindrical support capable of supporting each side of the lead frame 3. 10 and a large-diameter guide/sliding portion 11 that guides each side edge of the lead frame 3 and slides the presser roller 8 back and forth in the axial direction are integrally formed on the outside thereof, and each of the above The conveyance roller sliding member 6 is screwed into opposite male screw portions 14 formed on both sides of the rotating sliding member horizontal shaft 7, and slides the conveyance roller 4 in the axial direction. Therefore, it has a concave hooking part 13 that can engage the conveyance roller 4, and each of the presser rollers 8 is pivotally supported on a horizontal shaft 9 for the presser roller so as to be slidable in the axial direction.
The outer periphery of the lead frame 3 is attached to the presser edge 15 on each side.
At the same time, on the outside thereof, a hooking part 16 is formed in the form of an annular groove in which the guide/sliding part 11 of the conveying roller 4 can be engaged (see FIG. 1).

The second device for plating the entire surface of a lead frame according to the present invention includes a pair of conveyor rollers 4 in an electrolytic treatment tank 2,
The lower pair of conveyor roller sliding members 6 and the upper pair of presser/power supply rollers 18 are connected to the respective horizontal axes 5, 7, 1 perpendicular to the direction of movement of the lead frame 3.
Each of the conveyance rollers 4 is integrally supported in the rotational direction and slidably in the axial direction on a rotating horizontal conveyance roller shaft 5, and each of the conveyance rollers 4 is supported on each side of the lead frame 3. A small-diameter cylindrical support part 10 that can support the lead frame 3, and a large-diameter guide and sliding part that guides each side edge of the lead frame 3 and allows the presser and power supply roller 18 to reciprocate in the axial direction. 11 are integrally formed, and each of the conveying roller sliding members 6 is screwed into each oppositely directed male threaded portion 14 formed on both sides of the rotating horizontal shaft 7 for the sliding member. , in order to slide the conveyance roller 4 in the axial direction, it has a concave hooking part 13 that can engage the conveyance roller 4, and each of the presser and power supply rollers 18 has a horizontal shaft 19 for the presser and power supply roller. It is supported so as to be slidable in the axial direction, and a presser/power feeding part 20 is provided on each side of the lead frame 3 on the outer periphery, and a guide/sliding part 11 for the conveyance roller 4 is provided on the outside thereof.
An annular recessed groove engaging portion 21 is formed, and an electrode plate 23 is provided near the top and/or bottom of the electrolytic treatment tank 2. A power supply member 24 is provided in abutting manner (see FIG. 2).

The third aspect of the full-surface plating device for lead frames according to the present invention is that in the above-described full-surface plating device for lead frames, each presser/power supply roller 18 in the electrolytic treatment tank 2 has an annular groove on its outer periphery. 25, and a ring-shaped power supply part 20 having a slightly larger diameter than the outer diameter of the presser/power supply roller 18 is engaged in the annular groove 25 so as to be freely retractable. An annular groove 26 is formed on the outer periphery of the small-diameter cylindrical support portion 10, in which the lower end periphery of the ring-shaped power supply portion 20 can engage (see FIGS. 4 to 7).

In the above configuration, the electrolytic treatment is, for example, electrolytic plating, electrolytic degreasing, etc., and the non-electrolytic treatment is, for example, water washing, pickling, etc., which are pre- and post-treatments of the electrolytic treatment.

The rotational speed of the rotating conveyor roller horizontal shaft 5 and the rotational speed of the sliding member horizontal shaft 7 are controlled independently. In the figure, 3a indicates a side portion of the lead frame 3, and 27 and 28 indicate driving means.

[Effect]

A First, the operating state of the entire surface plating device according to the present invention in the non-electrolytic treatment tank 1 described above will be explained.

The lead frame 3 moves on the conveyance roller 4 while being pressed by the upper presser aura 8, but each pair of the conveyor roller 4 and the presser roller 8
Depending on the width of the lead frame 3 to be transported,
The spacing between each is adjustable.

That is, the sliding member horizontal shaft 7 is moved by the driving means 28.
When the is rotated forward (or reverse), each conveyance roller sliding member 6 screwed into oppositely directed male threaded portions 14, 14 on both sides of the horizontal shaft 7 rotates on the horizontal shaft 7 toward the center (or (towards the outside).

Now, each of the conveyance rollers 5 engaged with each hooking part 13 of each conveyance roller sliding member 6 moves toward the center (or toward the outside) on the horizontal axis for conveyance rollers 5.
Slide to.

Therefore, if the number of rotations of the sliding member horizontal shaft 7 by the driving means 28 is adjusted in advance according to the width of the lead frame 3 to be conveyed, the support portion 10 of each conveying roller 4 can be It comes to a position where only the side portion 3a is supported from below. At the same time, the large-diameter guide/sliding part 11 on the outside of each support part 10 comes to a position where it guides each side edge of the lead frame 3 from both sides.

Further, since the guide/sliding portion 11 of each conveyance roller 4 is engaged with each hooking portion 16 of each upper pressing roller 8, each conveyance roller 4
is pushed as it slides in the axial direction, and slides toward the center (or toward the outside) on the horizontal shaft 9 for the presser roller. Therefore, each pressing roller 8 comes to a position where it presses each side portion 3a of the lead frame 3 from above.

In this state, the horizontal shaft 5 for the conveyance roller is moved to the driving means 2.
When rotated by 7, the lead frame 3 becomes
As described above, each support portion 10 of the pair of conveyance rollers 4
The non-electrolytic treatment tank is supported only at each side portion 3a from below, guided at both side edges by each guide/sliding portion 11, and pressed from above by a pair of presser rollers 8. 1, while being transported through non-electrolytic treatment.

B Next, the operating state of the entire surface plating device according to the present invention in the electrolytic treatment tank 2 described above will be explained.

The lead frame 3 in the electrolytic treatment tank 2 is also moved by the conveyor roller 4, similar to the case of the non-electrolytic treatment tank 1.
and the presser/power feeding roller 18 above the lead frame 3. Here, too, the distance between each of the conveying rollers 4 and the presser/power feeding roller 18 can be adjusted depending on the width of the lead frame 3 to be conveyed.

That is, when the sliding member horizontal shaft 7 is rotated forward (or reverse) by the driving means 28, each of the conveying roller slides screwed into the oppositely directed male threaded portions 14 on both sides of the sliding member horizontal shaft 7 is rotated forward (or backward) by the driving means 28. The moving member 6 moves toward the center (or toward the outside) on the horizontal axis 7. By this movement of each sliding member 6, each hooking portion 1
Each of the conveying rollers 4 engaged with the conveying roller 3 slides toward the center (or toward the outside) on the horizontal shaft 5 for conveying rollers.

Therefore, by adjusting the number of rotations of the sliding member horizontal shaft 7 by the driving means 28 in advance according to the width of the lead frame 3 to be transported, the support portion 10 of each transport roller 4 can be It comes to a position where only each side portion 3a is supported from below. At the same time, the large-diameter guide/sliding part 11 on the outside of each support part 10 comes to a position where it guides each side edge of the lead frame 3 from both sides.

Furthermore, each of the upper presser and power supply rollers 18 is also
Since the guide/sliding portion 11 of each of the conveyance rollers 4 is engaged with each of the hooking portions 21, it is pushed as each conveyance roller 4 slides in the axial direction, and the horizontal Slide on the shaft 19 toward the center (or toward the outside). Therefore, each presser/power supply roller 18 also comes to a position where it presses each side portion 3a of the lead frame 3 from above.

By rotating the conveyance roller horizontal shaft 5 in this state, the lead frame 3 is rotated at each side 3 at each support portion 10 of the pair of conveyance rollers 4 as described above.
Only the portion a is supported from below, and each side edge is guided by each guide/sliding member 11. At the same time, the lead frame 3 is subjected to electrolytic processing such as plating inside the electrolytic treatment tank 2 while only each side portion 3a is held down from above by the presser/power feeding part 20 on the outer peripheral edge of the pair of presser/power feeding rollers 18 and is supplied with electricity. They are being transported while being treated.

C. Among the entire surface plating devices according to the present invention, the operating state of the device described above has the following effects in addition to those described above.

That is, in the structure having each of the conveyance rollers 4 and the presser/power supply roller 18 as described above, when the lead frame 3 passes between each of the conveyance rollers 4 and the presser/power supply roller 18, each ring-shaped power supply part 20 closes around the lower end of the lead frame 3. portion is pushed up by the upper surface of the lead frame 3. Since each of the ring-shaped power supply parts 20 has a larger diameter than each of the conveyance rollers 4, the upper end circumference thereof protrudes from the annular groove 25 of the power supply roller 18 and comes into contact with each power supply member 24 provided above. (see FIGS. 4 and 5), power is supplied to the lead frame 3, and electrolytic treatment is performed.

On the other hand, after the lead frame 3 passes between each conveyance roller 4 and the presser/power supply roller 18, each ring-shaped power supply section 20 descends due to its own weight, and its lower end periphery forms the annular groove of each conveyance roller 4. 26, and the upper end circumferential portion of each presser/power feeding roller 18 is inserted into the annular groove 25 (Fig. 6).
(See Figure 7). As a result, the power supply unit 20 no longer contacts the power supply member 24 and is not supplied with power.

As described above, in the present invention, power supply is automatically stopped when current tends to concentrate on each power supply unit 20 after the lead frame 3 has passed. Therefore, unlike in the past, there is no possibility of high current density near each ring-shaped power supply section 20 and rough electrodeposition plating, which may cause damage to the surface when the subsequent lead frame 3 passes through or abnormal plating deposition. It will never become. This allows each power feeding section 20 to be used continuously for a long time without having to be replaced.

〔Example〕

FIG. 1 shows an apparatus for full-surface plating on lead frames according to the present invention, which is related to a washing tank used as a pre- and post-treatment for non-electrolytic treatment, such as electrolytic treatment, and FIG. 2 to FIG. Among the entire surface plating apparatuses for lead frames according to the present invention, one related to an electrolytic treatment tank, for example, an electrolytic plating treatment tank is shown.

In either the non-electrolytic treatment tank 1 or the electrolytic treatment tank 2, the pair of transport rollers 4, the lower pair of transport roller sliding members 6, and the upper pair of presser rollers 8 or presser/power supply roller 18 are as follows: They are provided at 5, 7, 9, and 19 on each horizontal axis perpendicular to the traveling direction of the lead frame 3 traveling in the non-electrolytic treatment liquid 1a or the electrolytic treatment liquid 2a.

That is, each of the conveyance rollers 4 has a small-diameter cylindrical support portion 10 that can support each side portion 3a of the lead frame 3 to be conveyed from below, and a support portion 10 that guides each side edge of the lead frame 3 on the outside thereof. Presser roller 8
Alternatively, a large-diameter disk-shaped guide/sliding portion 11 that allows the presser/power feeding roller 18 to reciprocate in the axial direction,
It is integrally formed.

Further, each of the conveyance rollers 4 has a conveyance roller horizontal shaft 5.
It is pivotally supported via a key 32 in a long key groove 31 formed in the axial direction, and is integral with the horizontal shaft 5 in the rotational direction, and is mounted so as to be able to reciprocate and slide in the axial direction.

In order to reciprocate each of the conveyance rollers 4 in the axial direction, each conveyance roller sliding member 6 has a hook portion 13 formed of a vertical cross-section member that can engage and hold each conveyance roller 4 from both sides. have. In the illustrated example, a gear provided outside the conveyance roller 4 is also engaged in the hooking portion 13;
It does not have to be engaged inside.

Further, each of the conveying roller sliding members 6 is screwed into each male screw portion 14 formed on both sides of the horizontal shaft 7 for a sliding member and facing in opposite directions.
With this rotation, each of the conveying roller sliding members 6 can be reciprocated toward both sides or toward the center.

Each presser roller 8 provided in the non-electrolytic treatment tank 1 has an outer peripheral edge serving as a presser edge portion 15 that presses each side portion 3a of the lead frame 3 from above, and each presser/power supply roller provided in the electrolytic treatment tank 2 Reference numeral 18 serves as a presser/power supply part 20 whose outer peripheral edge presses down each side part 3a of the lead frame 3 from above and supplies power by contact therewith.

In addition, each presser roller 8 and each presser/power supply roller 18
gears are integrally arranged in parallel on each outside through a small-diameter cylindrical portion, and are meshed with the gear provided on the horizontal shaft 5 for the conveyance roller, thereby forming a small-diameter cylindrical support portion 10 of the conveyance roller 4. and the presser roller 8 can rotate synchronously. Reference numeral 17 indicates a meshing portion between both gears.

Each presser roller 8 and each presser/power supply roller 18
is fitted over the transport roller horizontal shaft 9 and the transport/power supply roller horizontal shaft 19 so as to be slidable in the axial direction.

Each of the above-mentioned presser rollers 8 and each presser/power supply roller 18
, each of the annular grooves formed on the outer periphery of the small-diameter cylindrical portion between the outer gear and the outer gear is engaged with the upper portion of each guide/sliding portion 11 of the conveying roller 4, such as a locking portion 16; It is listed as 21. This hooking part 16, 21
Instead of being formed between the outer gear and the outer gear, a separate disk may be interposed inside the gear, and the outer gear may be formed between the disk and the outer gear.

Reference numeral 23 indicates electrode plates, which are provided near the top and near the bottom of the electrolytic treatment tank 2. Reference numeral 24 denotes a power supply member provided in the electrolytic treatment tank 2, which is provided in contact with each presser/power supply portion 20 on the outer peripheral edge of each presser/power supply roller 18 from above.

FIGS. 4 to 7 show other embodiments of the presser/power feeding rollers 18 provided in the electrolytic treatment tank 2. FIG.

That is, each presser/power supply roller 18 has an annular groove 25 formed on its outer periphery, and a ring-shaped power supply portion 20 having a diameter slightly larger than the outer diameter of the presser/power supply roller 18 is inserted into the annular recess. It is engaged in the groove 25 so as to be freely retractable. On the other hand, each of the conveyance rollers 4 here has an annular groove 26 formed in the outer circumferential portion of the small-diameter cylindrical support portion 10, with which the lower end circumferential portion of the ring-shaped power supply portion 20 can engage.

Therefore, the lead frame 3 is
When passing over the small-diameter cylindrical support portion 10 , each ring-shaped power feeding portion 20 has its lower end circumferential portion pushed up by the upper surface of the lead frame 3 . Since each of the ring-shaped power supply portions 20 has a larger diameter than each of the conveyance rollers 4, the upper end circumferential portion thereof forms an annular groove 25 on the outer periphery of the presser and power supply roller 18.
It protrudes from the top and comes into contact with each of the upper power supply members 24 to be energized and perform electrolytic treatment.

On the other hand, after the lead frame 3 passes over each conveyance roller 4, each ring-shaped power supply section 20 descends due to its own weight, and the lower end circumferential portion is connected to the annular groove 2 of each conveyance roller 4.
6, and the upper end peripheral portions are respectively inserted into the annular grooves 25 of each presser/power supply roller 18 (6th
Figure 7). With this, the ring-shaped power supply section 20 does not contact the power supply member 24.

Therefore, after passing through the lead frame 3, where electricity tends to concentrate near the power supply part 20 and result in a high current density,
The power supply to the power supply unit 20 is automatically temporarily stopped.

In the figure, reference numeral 29 indicates a worm installed horizontally along the side wall of each of the processing tanks 1 and 2 of the entire surface plating apparatus, and is engaged with the worm foil 30 of the horizontal shaft 7 for sliding the transport roller of each processing tank. With this, the rotation of one worm 29 simultaneously rotates the horizontal shafts 7 for the conveyance roller sliding members of all processing tanks, adjusting the interval between each roller in the entire device, and adjusting the width of the lead frame 3. This makes it easier and faster to respond.

Effects of the Invention As is clear from the above, the entire surface plating device for lead frames according to the present invention has the following effects.

(a) When moving the lead frame in a non-electrolytic treatment tank or an electrolytic treatment tank while holding both sides of the lead frame, always keep the distance between a pair of conveyance rollers, a pair of presser rollers, or a presser/power supply roller at the same time. Can be adjusted to accommodate the width of the lead frame.

In other words, in conventional full-surface plating equipment, if the width of the lead frame differs, it is not possible to adjust the distance between each pair of conveyance rollers, each presser roller, or each presser/feed roller, or even if it is possible to adjust the distance, each must be manually adjusted. I was gone. There are over 100 rollers in the entire device, so adjusting the spacing between them required a great deal of effort and time.

In contrast, in the entire surface plating device according to the present invention, by rotating the horizontal shaft for the conveying roller sliding member, the interval between the pair of conveying roller sliding members can be adjusted, and accordingly, the interval between the pair of conveying rollers can be adjusted, and the distance between each pair of presser rollers or between each presser and power supply roller can also be automatically adjusted according to the distance. Therefore, even if the widths of the lead frames differ, the spacing can always be easily and quickly adjusted, and workability can be greatly improved. In addition, if a worm is installed horizontally along the entire treatment tank as shown in the example,
You can make adjustments all at once.

(b) As mentioned above, the distance between the pair of conveyance rollers,
Since the distance between the pair of presser rollers or between the presser and power supply rollers can always be made to correspond to the width of the lead frame, the lead frame is always supported from below on each side by the small diameter cylindrical support part of each conveyance roller. Each side edge is guided from both sides by an outer large-diameter guide/sliding portion, and each side portion is pressed from above by each presser roller or each presser/power supply roller.

Therefore, the lead frame can be transported stably, eliminating sideways shifting, meandering, falling off, etc. while the lead frame is moving, and each roller does not come into contact with the island part or pin of the lead frame, causing deformation. - Damage can also be prevented. This is very useful for modern thin lead frames with a large number of pins.

Further, in the entire surface plating device of the present invention, both sides of the lead frame are configured to pass over the small diameter cylindrical support portions of each of the pair of conveyance rollers. Therefore, unlike conventional conveyor rollers with a concave center, the lead frame can always maintain a constant pass line, that is, the transition height, regardless of its width. Power can be reliably supplied to the frame.

(c) Furthermore, an annular groove is formed on the outer periphery of each presser/power supply roller provided in the electrolytic treatment tank, so that a ring-shaped power supply portion with a diameter slightly larger than the outer diameter of the presser/power supply roller can be freely retracted. On the other hand, if the outer periphery of the small-diameter cylindrical support of each conveyance roller is formed with an annular groove in which the lower end periphery of the ring-shaped power supply can be engaged, the power supply can be used for a long period of time. Can be maintained in good condition for many years.

In other words, in conventional full-surface plating equipment in which power is constantly supplied to the power supply part, after passing through the lead frame, which is the object to be plated, the vicinity of the power supply part becomes high in current density and electrolytic treatment is likely to be performed. Unnecessary plating was attached to the surface. As a result, unevenness occurs on the surface of the power feeding section, which may damage the surface of the lead frame afterwards, making it impossible to use it for a long period of time.
I had to replace it with a new one often.

On the other hand, in a structure in which the ring-shaped power supply section is configured to be able to be inserted into the annular groove of the presser/power supply roller, when the lead frame passes over each conveyance roller, electricity is applied and electrolytic treatment is performed. However, after the lead frame passes over each conveyor roller,
Since each ring-shaped power supply part descends under its own weight and no longer contacts the power supply member, the power supply to each ring-shaped power supply part is stopped.

Therefore, no electrolytic treatment is performed after passing through the lead frame, and unnecessary plating is almost eliminated from adhering to the power supply section, allowing the power supply section to be maintained in good condition for a long period of time.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Figure 1 is a vertical sectional front view of a non-electrolytic treatment tank, Figure 2 is a vertical sectional front view of an electrolytic treatment tank, and Figure 3 is an enlarged vertical sectional front view of main parts of an electrolytic treatment tank. Figures 4 and 4 show other embodiments of the main parts of the electrolytic treatment tank, with the lead frame passing through a partially longitudinal front view, Fig. 5 a partially longitudinal side view, and Fig. 6 the same as Fig. 4. In the embodiment, a partially vertical front view after the lead frame has passed, FIG. 7 is a partially vertical side view thereof, and FIGS. 8 and 9 are front views of main parts of the conventional example. Drawing code, 1... Non-electrolytic treatment tank, 1a... Non-electrolytic treatment liquid, 2... Electrolytic treatment tank, 2a... Electrolytic treatment liquid, 3... Lead frame, 3a... Side part, 4...
...Transport roller, 5...Horizontal shaft for transport roller, 6...
Conveyance roller sliding member, 7... Horizontal shaft for sliding member, 8
...Press roller, 9...Horizontal shaft for presser roller, 10
...Bearing part, 11...Guide and sliding part, 13...
...Latching part, 14...Male thread part, 15...Presser edge part, 16...Latching part, 17...Matching part, 18...
Presser foot and power supply roller, 19...Horizontal shaft for presser and power supply roller, 20...Presser and power supply section, 21...Latching section,
23... Electrode plate, 24... Power supply member, 25... Annular groove, 26... Annular groove, 27... Drive means,
28...Driving means, 29...Worm, 30...
Worm foil, 31...key groove, 32...key.

Claims (1)

[Claims] 1. In the non-electrolytic processing tank 1 installed before and after the electrolytic processing tank 2, a pair of transport rollers 4, a pair of lower transport roller sliding members 6, and a pair of upper presser rollers are installed. 8 are provided on each of the horizontal shafts 5, 7, and 9 that are orthogonal to the direction of movement of the lead frame 3, and each of the above-mentioned transport rollers 4 is integral with the rotating horizontal shaft 5 for the transport roller in the rotation direction. A small-diameter cylindrical support part 10 is supported so as to be slidable in the axial direction and can support each side of the lead frame 3, and a presser roller is placed on the outside of the support part 10 for guiding each side edge of the lead frame 3. 8 and a large-diameter guide/sliding portion 11 for reciprocating in the axial direction. It is screwed into each of the oppositely directed male threaded portions 14 formed in the above, and has a concave hooking portion 13 that can engage the conveyance roller 4 in order to slide the conveyance roller 4 in the axial direction, and Each of the presser rollers 8 is supported on a horizontal shaft 9 for presser rollers so as to be able to slide in the axial direction, and has an outer periphery formed at the presser edge 15 on the side of the lead frame 3. A full surface plating device for a lead frame, which is formed with a hooking portion 16 in the form of an annular groove that can be engaged with the guide/sliding portion 11 of the conveying roller 4. 2 Inside the electrolytic treatment tank 1, a pair of conveyance rollers 4,
A pair of lower conveyor roller sliding members 6 and an upper pair of presser/power supply rollers 18 are provided on each of the horizontal shafts 5, 7, and 19 perpendicular to the direction of movement of the lead frame 3, and each of the above-mentioned conveyors The roller 4 is integrally supported in the rotational direction and slidably in the axial direction on the rotating horizontal shaft 5 for the conveyance roller, and has a small diameter cylindrical support part that can support each side of the lead frame 3. 10, and a large-diameter guide/sliding portion 11 that guides each side edge of the lead frame 3 and causes the presser/power supply roller 18 to reciprocate in the axial direction is integrally formed on the outside thereof. Each conveyance roller sliding member 6 is screwed into each male threaded portion 14 facing in the opposite direction formed near both sides of the rotating horizontal shaft 7 for a sliding member, and slides the conveyance roller 4 in the axial direction. Each of the presser and power supply rollers 18 is supported slidably in the axial direction on a horizontal shaft 19 for the presser and power supply roller. A holding part 20 and power feeding part 20 on the side of the lead frame 3 is provided on the outer peripheral edge, and a hooking part 21 in the form of an annular groove in which the guide and sliding part 11 of the conveying roller 4 can be engaged is provided on the outside thereof. A lead frame is formed, and an electrode plate 23 is provided near the top and/or bottom of the electrolytic treatment tank 2, and a power feeding member 24 is provided in contact with the outer periphery of each presser/power feeding roller 18. Front plating device. 3. In the entire surface plating apparatus for a lead frame according to claim 2, an annular groove 25 is formed on the outer peripheral edge of each presser/power supply roller 18 in the electrolytic treatment tank 2, and the presser/power supply roller 18 is A ring-shaped power supply part 20 having a diameter slightly larger than the outer diameter is engaged in the annular groove 25 so as to be freely protrusive and retractable, and on the other hand, as each conveyance roller 4, the above-mentioned A full surface plating device for a lead frame, which forms an annular groove 26 that can be engaged with the lower end circumference of a ring-shaped power supply section 20.