JPH0259878B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic plating device for horizontally feeding a large number of rectangular plating objects such as IC lead frames and automatically spray plating them.

A strip-shaped plated object such as an IC lead frame 1
In order to efficiently plate a large number of sheets [hereinafter referred to as "plated items"], the horizontal roller 2 is used to plate in the load zone A, pre-processing zone B, jet plating zone C, post-processing zone D, and unloading zone E. It has previously been proposed to transfer a plurality of objects 1 in parallel and apply jet plating to a plurality of objects 1 to be plated at the same time (see FIGS. 1 to 4). According to this proposed technology, it is possible to transfer a larger number of sheets 1 per hour than the conventional plating device using a rack or cart, and to efficiently pre-process and post-process a large number of sheets by passing them through the processing tank 3. Although it is very good in that it can be applied to the plating object 1 of Since the transfer device 5 using the chuck 4 is used, its movements include lowering the chuck 4, grasping the plating object 1 from both sides [see arrow F in Fig. 3],
Same ascent, same forward movement, same downward movement [see arrow G in Figure 4],
The chuck 4 is opened, the object 1 to be plated is placed on the top cover 7 of the spray plating device 6, the transfer device 5 is moved back and raised, the pressing device 8 is lowered, and the plating process...
It requires processes such as ``carrying in'' and ``carrying out''.
A certain processing time (for example, about 11 seconds) must be taken into account, and it is difficult to ignore this processing time and increase other processing speeds, and there is a limit to improving efficiency.

In addition, in FIGS. 1 to 4, 9 is a pretreatment device, and 10 is a pretreatment device.
11 indicates a plating liquid injection opening, 11 a nozzle, and 12 a plating box called a "sparger."

This invention was developed focusing on the points mentioned above, and is a further refinement and improvement of the technology related to the previous proposal. The purpose of the present invention is to provide an automatic plating device that can transport the plating material to and from the jet plating device by "continuous horizontal movement" instead of transferring the plating material to the jet plating device.
Specifically, it is equipped with a jet plating device, a pressing device, a transfer roller device, and a forward feed device, and the combination of the transfer roller device and the forward feed device transfers the strip-shaped plated object to the jet plating device. On the other hand, it is an automatic plating device that can be freely carried in and out, and is configured to perform plating by pressing a strip-shaped plated object carried in and positioned on the spray plating device against the top cover of the spray plating device using a pressing device. The device is designed to support and convey the plating object from both sides with a roller group formed by arranging a plurality of rollers in parallel, and the roller group lowers and returns to the upper cover of the spray plating device. The forward feeding device is equipped with a rotatable endless body to which a plurality of claws are attached at predetermined intervals, and the plated object is placed on the upper lid on the roller group and recovered by this. To provide an automatic plating device in which a pawl pushes the object to be plated on the roller group at the raised position and moves it forward as a movable endless body rotates, thereby positioning it at a predetermined position on a jet plating device.

The details of this invention will be explained below based on an embodiment shown in FIGS. 5 to 8. Note that the same or common parts as in the prior art will be indicated by the same reference numerals, and redundant explanation will be omitted. In addition, in the following explanation, various devices and equipment are arranged in the left-right direction, that is, in the width direction [as shown by the arrows in FIGS. Although there are multiple directions, their contents are almost the same, and to simplify the explanation, the transfer of the plating object 1 in a certain column, automatic plating, etc. will be described, and the others will be omitted. It is.

This automatic plating device includes a jet plating device 100,
It is mainly composed of a pressing device 200, a transfer roller device 300, and a forward feeding device 400. The spray plating device 100 is almost the same as the conventional one, but the part of the upper lid 7 provided with the plating liquid spray openings 101 (that is, the part that receives the plating object 1) is formed narrow in the width direction, and As shown in the figure, a pair of left and right rollers (described later) are provided with a width W ₂ smaller than an interval W ₁ .

The pressing device 200 is disposed above the jet plating device 100 so as to be able to descend and return to its original position, and its driving source is a pair of horizontally placed pressure devices that are symmetrical in the left and right direction (in the direction of the arrow in FIG. 8). cylinder 20
1,202 are arranged. [In FIG. 8, only a portion of the left pressure cylinder 202 is shown. ] A connecting block 205 is attached to the tip of the rod 203 of the pressure cylinder 201, and the shaft 204 passes through the connecting block 205.
5 is a pair of upper and lower arms 206, 207, 20 in the upper and lower directions (in the direction of arrow H in FIGS. 5 and 6);
8,209 are connected. Specifically, the lower ends 206a of the pair of upper arms 206, 208 in the front and back,
208a is connected to the shaft 204, and the upper ends 207a, 209 of the pair of lower arms 207, 209 are connected to the shaft 204.
09a are each rotatably connected to the shaft 204. And upper arm 206,2
The upper ends 206b and 208b of 08 are the frame 21
The lower ends 207b, 209b of the lower arms 207, 29 are connected to a shaft 215 attached to a press plate 214, and the lower ends 207b, 209b of the lower arms 207, 29 are connected to a shaft 213 provided between a pair of front and rear bearings 211, 212 attached to the press plate 214. I support it. The press plate 214 is lowered and returned to its upper position by the action of the pressure cylinder 201, and in order to ensure accurate movement, the lower ends of the pair of front and rear guide bars 216, 217 are connected to the upper surface of the press plate 214. Yes, and both guide bars 216, 217 themselves are attached to the frame 210.
It is inserted into fixed guides 218 and 219 attached to the.

In this way, the press plate 214 is supported and suspended by a total of four upper and lower arms 206 to 209, including upper and lower arms and a pair of front and rear arms.
Since the upper and lower book arms 206 to 209 are connected to the left and right pair of pressure cylinders 201 and 202, the press plate 214 is in a stable horizontal state both in the front-rear direction and in the left-right direction. [Note that illustration and explanation of the "upper and lower arms" on the left pressure cylinder 202 side, which are only partially shown in FIG. 8, are omitted. ] On the lower surface side of the pressing plate 214, there are pressing parts 22 of a number corresponding to the number of parallel plated objects 1.
0 are provided protrudingly, and when descending, the pressing part 220
An elastic body 221 attached to the lower surface of the plated body 221 contacts the upper surface of each plated object 1 and presses the entirety of each plated object 1 against the upper lid 7 of the spray plating device 100. The elastic body 221 and the upper lid 7 each function as a "mask plate" for the object 1 to be plated.

Furthermore, the entire pressing device 200 is
It is movable in the direction of arrow H in the figure and in the opposite direction, so that when replacing the top cover 7 of the spray plating device 100, it can be moved to a position above it so as not to get in the way. Therefore frame 2
A pair of front and rear moving rollers 222, 223 attached above both the left and right sides of 10 are placed on a rail 224, and the moving rollers 222, 223 and the rail 22
4, the entire pressing device 200 is movable in the front and rear directions.

The transfer roller device 300 includes a pair of left and right rollers 3.
It is characterized by the fact that the distance between the lines 01 and 302 can be adjusted freely, and the whole body can be moved up and down. This transfer roller device 300 is combined with a forward feeding device 400, which will be described later, and the jet plating device 10 is
This is very important in allowing the plating object 1 to be carried in by simply horizontally moving it relative to the plating process and to be carried out after the plating process. For this purpose, the transfer roller device 300 first has a pair of left and right roller guide plates 303, 304 installed above the spray plating device 100 and extending from the inlet side (left side in FIG. 6) to the outlet side (right side in FIG. 6). have. A group of rollers is provided between the rear end and the front end of the roller guide plates 303, 304. In the illustrated example, the roller group 305 is a drive roller and the roller group 306 is an idle roller, but it is of course possible to use all of them as idle rollers.
Specifically, such roller groups 305 and 306 include a pair of left and right rollers 3 that are rotatably attached inside the roller guide plates 303 and 304.
01 and 302, each roller 301,
A roller shaft 309 is inserted through 302 . Note that 310 represents a keyway, and 311 represents a key (see FIG. 6). And certain rollers 301a, 30
Pulleys 312 and 313 are attached to the ends of the roller shaft 309a passing through the roller shaft 309a. etc.] 316 to a pulley and the like of another roller shaft 309 to enable each of the other rollers 301 and 302 to rotate.

317 and 318 are a pair of left and right guide rails,
Similarly, a pair of left and right roller guide plates 303,
304 and is integrated therewith. Guide shafts 319 are inserted through the guide rails 317 and 318 at two locations in the front and back direction, and a pair of left and right guides 320 and 321 are inserted into each of the guide shafts 319 and 319, respectively.
is attached. A pair of left and right guides 320,3
21 has threaded parts 320a and 321a formed on the inside, and the guide 320 of the guide shaft 319,
The parts corresponding to 321 have reverse threaded parts 322, 32.
3, in which a threaded portion 320a and a reverse threaded portion 322 are screwed together, and a threaded portion 321a and a reversely threaded portion 323 are screwed together. Such a guide 32
0 and 321 have a stepped shape as shown in FIG. 7, and a portion thereof enters into the opening of the guide rails 317 and 318 and is integrally engaged with the guide rails 317 and 318. and guide shaft 31
A handle 324 is attached to the end of 9, and rotation of this handle 324 causes the reverse threaded portion 322,
323, the guides 320, 321 move in the "close" direction or "open" direction, and the pair of left and right rollers 30
1,302 intervals can be freely adjusted. A frame 327 that supports the roller shafts 309, 309a and the guide shaft 319 via bearings 325, 326 is connected to the base frame 3.
connected to a pressure cylinder 329 fixed to 28;
As described above, the entire transfer roller device 300 is vertically movable. Also, 33 in Figure 6
0,331 indicates a pair of front and rear guide bars for vertical movement.

In addition, the guide shaft 319, the guide 320, 3
21 and guide rails 317, 318 are placed on the left side of the figure so as not to interfere with the spray plating device 100, as shown in FIG. 6, and the roller guides are placed on the right side of the figure. plate 30
As shown in FIG.
b, 302b are rotatably attached to roller guide plates 303, 304. Also, 33
3,334 is a pin, and the roller guide plate 30
3, 304, and the aforementioned pressing device 200
When the press plate 214 returns and rises, the position of the plating object 1 is restricted so that it does not get stuck on the elastic body 221 and rise together with it.

The forward feeding device 400 includes an endless chain 4 as a rotating endless body arranged to form a substantially quadrilateral shape as shown in FIGS. 5 and 6.
01. This endless chain 40
1 are arranged at both ends in the left-right direction, and positions are selected that do not interfere with the pressing device 200 described above.
In FIG. 8, only the endless chain 401 on the right side is shown, and the endless chain 401 on the left side is the same as the one on the right side, so illustration thereof is omitted. This endless chain 40
A drive pulley 403 connected to a motor 402 and three idle pulleys 4 to provide rotational force to the
04, 405, 406 are provided, and these drive and idle pulleys 403, 404, 405,
406, the endless chain 401 forms a substantially quadrilateral shape as described above, and the idler pulley 405
and 406 to form a trajectory that remains parallel to the roller groups 305 and 306 of the transfer roller device 300.

A plurality of prismatic base arms 407 are installed between a pair of left and right endless chains 401, and a plurality of claws 408 are attached to each base arm 407 in a number and position corresponding to the number and position of the plating objects 1 in parallel. It is being The shape of each claw 408 is the sixth
It is assumed to be bent as shown in the figure,
The tip of the roller 30 is located when the pawl 408 rotates between the idle pulleys 405 and 406.
1, 302 is extended to a position where it can interfere with the pass line p of the plating object 1, and if the plating object 1 is located on the pass line p, it will engage with the rear end of the plating object 1. It is arranged so that the mating and plating object 1 can be pushed forward. The attachment position of the claw 408 to the endless chain 401 depends on the speed of rotation of the endless chain 401, the speed of plating processing, etc.
The timing is determined as appropriate depending on the balance between the timing of carrying in and supplying the plated object 1 to 0, the injection plating of the plated object 1, and the carrying out of the plated object 1 that has been plated.

Next, the effect will be explained.

Plated object 1 after pretreatment in pretreatment zone B
is conveyed on the horizontal roller 2 to the spray plating zone C.
Input transfer roller device 300 and forward feed device 4
00 is carried into and supplied to the injection plating device 100. That is, with the left and right pair of rollers 301 and 302 of the transfer roller device 300 supporting both left and right sides of the plating object 1, the roller group 305 moves the plating object 1
At this time, the rotation of the endless chain 401 of the forward feed device 400 causes the claw 408 to move along the track, and its tip hits the rear end of the plated object 1 on the pass line p and remains there. The pawl 408 pushes the plating object 1 forward and the roller group 3
06 and immediately spray the plating device 1.
Push the plated object 1 to the position directly above 00 and stop once. Next, when the pair of left and right pressure cylinders 201 and 202 of the pressing device 200 act to draw in the load 203, the pair of upper and lower arms 206, 207, 20
8, 209 exhibits a state in which the arm is stretched straight from a state in which the arm is bent in a dogleg shape, and the press plate 214 supported by the lower arms 207, 209 begins to descend, and as it continues, the guide bar 21
6, 217, the elastic body 221 of the pressing part 220 comes into contact with the upper surface of the plated object 1. At this time, the transfer roller device 300
is the pressure cylinder 329 and the guide bar 330, 3
31, the narrow top cover 7 of the spray plating device 100 has entered the gap between the left and right pair of rollers 301b and 302b, and the left and right pair of rollers 301b ，
The plated object 1, while being supported by the upper cover 302b, ends up being pressed onto the upper cover 7 by the elastic body 221. Then, the spray plating device 100 operates, and the plating solution is sprayed onto the part to be plated of the object 1 to be electrolytically plated through the plating solution spray holes 101 formed in advance in the upper lid 7. When the plating is completed, the pressing device 200 acts in the opposite direction, the pressing plate 214 returns and rises, the entire transfer roller device 300 also returns and rises, and then the claw 4
By the movement of 08, the plated object 1 that has been plated is transported to the post-processing zone D on the left and right pair of rollers 301b and 302b, and at the same time another nail 40
8 is pushing the next object 1 to be plated to the upper side of the injection plating device 100. Such an action is performed continuously and simultaneously on each of the plurality of rows of plating objects 1 that are being advanced in parallel in the left and right width directions. And the matte item 1
is located above the jet plating device 100 and moves slightly downward while being supported by the transfer roller device 300 and then rises after plating, but most of the movement is done horizontally on the transfer roller device 300. Therefore, the loading and unloading will be carried out extremely quickly.

When feeding another plating object 1 with a width different from the previous plating object 1 to the pass line p, the transfer roller device 300 can receive the plating object 1 with a different width without replacing the many rollers 301 and 302 one by one. can. That is, a pair of left and right rollers 301, 3
02, 301a, 302a, 301b, 302b
The interval can be easily adjusted, and this effect will be explained next. As shown in FIG. 7, when the handle 324 is manually rotated, the guide shaft 319 rotates, and the guides 320 and 321, which are screwed into the reverse threaded portions 322 and 323, are opened while facing each other. ,
The movement is transmitted to the guide rails 317, 318 → roller guide plates 303, 304 → rollers 301, 302, and as a result, the left and right pair of rollers 301, 3
02, 301a, 302a, 301b, 302b
will either "open" or "close".
Therefore, if another plating object (not shown) having a wider width than the previously conveyed plating object 1 is to be processed by this transfer roller device 300, the above-mentioned reverse threaded portion 32
2, Align the direction of the screw 323, and turn the handle 32.
4, the pair of left and right roller guide plates 303, 304 "open" and "close", and the roller groups 305, 306 arranged from the entrance side to the exit side of the jet plating device 100, i.e. Rollers 301, 302, 301a, 302a, 301
b and 302b can be opened and closed at the same time. The amount of movement between "open" and "close" can be adjusted by the amount of rotation of the handle 324 depending on the width of the plated object 1 to be received. A pair of left and right rollers 30
1,302,301a,302a,301b,3
As shown in FIG. 7, a plurality of 02b are arranged in parallel in the left and right direction according to the number of parallel plating objects 1, and the above "open",
The "close" movement is performed by all pairs of left and right rollers 301, 302, 301a, 302a, 3 installed in parallel.
01b and 302b.

Since the automatic plating device according to the present invention is as described above, by combining the transfer roller device and the forward feeding device, it is possible to ``continuously'' carry in and out plating objects to and from the jet plating device by almost only horizontal movement. Now, compared to the conventional "intermittent" loading and unloading of plating items that combines vertical and horizontal movement, it is possible to process plating items in just a few seconds, and the total processing time of automatic plating processing has also been reduced. It can be significantly shortened, and the efficiency improvement is remarkable. In addition, compared to the transfer device of the prior art, the transfer roller device and the forward feeding device as a means for carrying in and out the plating object to the injection plating device do not use a chuck, and the chuck can be lowered, gripped, raised, advanced, and lowered. Since there is no need for movements such as opening or opening, there is also the effect that the overall structure of the chuck mounting structure, chuck operating device, etc. can be simplified accordingly.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view showing the entire automatic plating line, Fig. 2 is a schematic explanatory view showing the state in which the plating object is translated by a horizontal roller, and Fig. 3 is a schematic plan view showing the entire automatic plating line.
FIG. 4 is a side view showing the state of movement of the transfer device on the entry side of the injection plating device; FIG. 1. A schematic side view of the device according to the second invention], FIG. 6 is a side view of the main part in FIG. 5, and FIG. 7 is an enlarged sectional view taken along the arrow - line in FIG.
FIG. 8 is a side view seen from the direction of the arrow in FIG. 6. 1... Strip-shaped plating object, B... Pre-processing zone, C... Injection plating zone, D... Post-processing zone, 4... Chick, 5... Transfer device, 6,10
0...Injection plating device, 7...Top lid, 8,200
...Press device, H...Advancing direction, I...Left and right (width) direction, 300...Transfer roller device, 400
...forward feeding device, 301, 302, 301a,
302a, 301b, 302b...roller, p...
...Pass line, 303, 304...Roller guide plate, 320, 321...Guide, 329...
...Pressure cylinder, 401...Rotating endless body (endless chain), 408...Claw.

Claims (1)

[Scope of Claims] 1. It is equipped with a jet plating device, a pressing device, a transfer roller device, and a forward feed device, and the combination of the transfer roller device and the forward feed device can jet plate a strip-shaped plated object. An automatic plating device that can be carried in and out of the device, and is configured to perform plating by pressing a strip-shaped plating object carried in and positioned on the spray plating device against the top cover of the spray plating device using a pressing device, The transfer roller device is configured to support and convey the plating object from both sides using a roller group formed by arranging a plurality of rollers in parallel, and the roller group lowers and returns to the top cover of the spray plating device. By lifting up, the plated items on the roller group are placed on and collected from the upper cover, and the forward feeding device is equipped with a rotating endless body with a plurality of claws attached at predetermined intervals. , automatic plating characterized in that as the rotary endless body rotates, the pawl pushes the plating object on the roller group in the raised position to move it forward, thereby positioning it at a predetermined position on the spray plating device. Device.