JPS60169599A - Device for plating plate-shaped work - Google Patents

Abstract

PURPOSE:To plate a plate-shaped work only by the conveying operation in a horizontal direction by conveying horizontally the plate-shaped work in a vertical attitude and passing the same through the inside of treating cells provided with sealing mechanisms for preventing outflow of a treating liquid. CONSTITUTION:Plural pretreating cells 1, a plating cell 2 and a post treating cell 3 are disposed in series and a plate-shaped work is grasped by the clamps 22 of a conveying mechanism 5 and is passed successively through the inside of the treating cells 1, 2, 3 by means of a chain 19. The cell 2 is provided with a guide 51 and a sealing mechanism 52 to a partition wall 50, which mechanism 52 consist of a pair of pinch rollers 56 perpendicular to wall surfaces 58, 59, 60. The rollers 56 are coated with resilient elastic sheaths. The rollers 56 are rotated at a prescribed speed and move the work W in press contact with the work W between two rows of vertical pipes 15 in the cell 2. A plating liquid is ejected from pipes 15 and the plating treatment is executed at a high speed. The treatment is thus made possible simply by conveying the work in the horizontal direction and the time for conveyance and equipment cost are economized.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a plating processing apparatus for plating an icy workpiece such as a printed circuit board.

(Prior art) Conventionally, in this type of processing equipment, a plurality of workpieces are attached to a frame-shaped jig and the plating process is performed as follows.
Specifically, the workpiece is moved to the upper part of the processing tank (for example, a plating tank) together with the jig, then the jig and workpiece are immersed in the processing tank with a downward slope, and after a predetermined time, the jig and workpiece are pulled up. After that, it is transported horizontally to the top of the next processing tank.

In this way, in the conventional apparatus, in addition to horizontally transporting the jig and workpiece, it is also necessary to raise and lower them, so there is a problem in that the raising and lowering operation requires space between the ribs, resulting in a low production capacity. There is also the problem that the equipment cost increases because an R lowering device is required.

Moreover, since the four-stepping operation is performed, the jig needs to be constructed into a frame shape as described above, which increases the cost of the jig.

(Object of the Invention) In order to solve the above-mentioned conventional problems, the present invention aims to provide an apparatus that does not require lifting and lowering operations, that is, an apparatus that can perform a series of processing only by horizontal conveying operations. It is.

(Structure of the Invention) The present invention is a workpiece in which a plurality of processing tanks for plating treatment are arranged in series along the workpiece conveyance direction, and a plate-like workpiece is fixed on the surface in a vertical posture and conveyed in a horizontal direction. A transport mechanism is provided above the processing tank, an entrance/exit through which the workpiece passes is provided in the partition wall between adjacent processing tanks (), and a seal mechanism is installed at the entrance/exit to prevent the processing liquid from flowing out of the processing tank. It is characterized by

(Example) In FIG. 1, which is a schematic plan view, a plurality of pre-treatment tanks 1, plating 4 nuts 2, and post-treatment (a3) are arranged in series, and the entire group forms a treatment tank group 4. .

Specifically, pre-treatment tank 1 and post-treatment tank 3 are a washing tank, neutralization (1
, a recovery tank, etc., and the plating tank 2 specifically includes a nickel plating tank, a gold strike tank, and a gold plating tank. Above the treatment tank group 4, there is a conveyor @ over its entire length.
As will be described later, the W1 transport mechanism 5 transports the workpieces in the direction of arrow F along the longitudinal direction of the processing tank group 4. 4
A loading station 6 (workpiece removal part) and an unloading station 7 (workpiece removal part) are provided at the upstream and downstream ends of the pipe, respectively. In the illustrated embodiment, an endless chain is used for the conveyor 3 structure 5, and the processing 4tl 1.2.3 is arranged in a line d5. However, the processing tanks 1, 2, and 3 are arranged in two rows, and the reciprocating (arrow F
and in the direction of reverse arrow F), the workpiece is transferred to the processing tank 1.
It is also possible to pass through 2.3.

In FIG. 2, which is an enlarged sectional view taken along the line ■-■ in FIG. 1, the plating tank 2 is installed on a frame 8.

A pair of side walls 9 with plating +152 (transfer direction 1- in Fig. 1)
A wall surface 10 protruding outward and upward by one unit is provided at the F portion of the wooden box (cylindrical wood) which extends along the wall, and this wall surface 1o forms overflow plating boxes 1 to 2a. The pocket 1-2a is connected to the frame pipe 11 below the plating tank 2 through a passage (not shown). The lower part of the vibrator 11 is inserted into a receiving tank 12, and the inlet of a circulation pump 13 is connected to the receiving tank 12. The circulation pump 13 is installed near the plating tank 2, and its outlet is connected to a pair of vibrators 14 via a passage 13a. The bottom of the vibrator 14 in the fitting 41y2 extends horizontally along the side wall 9, and the lower end of the vertical vibrator 15 is connected to the plurality of cylinders 11 of the vibrator 14. The vibrators 15 are arranged in two rows along the longitudinal direction of the side wall 9. As will be described later, the workpiece W is conveyed in a vertical position between two rows of vibrators 15, and each of the vibrators 15 is equipped with a plurality of nozzles for ejecting plating solution toward the workpiece W. It is.

As is clear from the above description, by spouting the plating liquid J from the nozzle of the vibrator 15 toward the nozzle W, it is possible to speed up the plating process.

Also, there is an Off pocket 2 where the patch liquid overflows from the side wall 9.
Flows into a, from pockets I to 2a, vibrator 11, receiver tank 1
2, returns to the circulation pump 13, and from the circulation pump 13 passes through the passage 13a1 pipe 14 and the vibrator 15, and then returns to the workpiece W.
It is sprayed towards. A lid 2b is provided at the upper end of the wall surface 10 to close the upper end opening of the plating tank 2. Also, on one wall surface 10, an exhaust duct 1-2C is provided which communicates with the inside of the plating tank 2 and extends upward.

A frame 1 extending above the plating tank 2 into which the transport mechanism 5 is attached
6. Specifically, it is made up of 1M as follows. In FIG. 3, which is an enlarged partial view of FIG. 2, a bracket 17 is attached to the upper and lower surfaces of the frame 16, and a chain case 18 is supported by the bracket (-17).The chain case 18 has a generally rectangular shape. The rail-shaped part I has a cross section and extends along the entire length of the processing tank group 4 (FIG. 1), and allows one chain to run inside the chain case 18 while being guided by the rollers 19a. The upper end of the chain plate 20 bent into a cat shape is attached to the upper surface of the top 19.The lower end of the chain plate 20 is attached to an arm 21 extending vertically.
The upper end of the arm 21 is fixed, and a clamp 22 for holding a workpiece W, which will be described later, is attached to the lower end of the arm 21.

The upper ends of the power supply member 23 on the positive power supply side and the power supply members 24 and 25 on the negative power supply side are attached to the frame 16. The power supply member 23 extends to near the top of the plating tank 2 on both sides of the arm 21 . An electrode plate 26 is provided in the plating tank 2 between the both side walls 9 and the pipe 150, and the power supply member 2
The lower end of 3 is connected to the electrode plate 26. Power supply part (A24
．． The lower ends of 25 are located on both sides of the upper part of arm 21,
It comes into contact with a carbon brush 27 attached to the arm 21. The power supply member 23 and the arm 2 are mounted on the lid 2b.
The sleeves 1 through 1 are provided. It is also possible to eliminate either one of the A3 power supply members 24 and 25.

As shown in FIG. 4, which is an enlarged partial view of FIG. 3, the clamp 22 has two vertical arms 30, 31. arm 30
．． Pins 32 made of stainless steel or the like are driven concentrically into the lower end of the pin 31, and a J-shaped pressure contact portion 33 is attached to the head of the pin 32.
is formed. The pressure contact part 33 is a part for holding the upper edge of the workpiece W from both sides, and the workpiece W held by the pressure contact part 33 is vertical and its surface is in the conveying direction F (Fig. 1).
It becomes a parallel posture. A plate-shaped stopper 34 is fixed to the arm 30 near the upper side of the pin 32.

The stopper 34 is an IC member that determines the upper limit position of the workpiece W, and protrudes near the arm 31 to prevent the workpiece W from moving further than the stopper 34. It is supposed to be done. 83 above the stopper 337I
A horizontal pin 35) is fitted and fixed in the hole of the arm 30. The pin 35 extends at the inner angle of the workpiece W and is slidably fitted into the hole of the arm 31. A pin 36 that is horizontal and parallel to the surface of the workpiece W is attached to the tip of the pin 35.1. A cam 37 is rotatably connected to the pin 35 via a pin 36. A rod-shaped handle 38 is attached to the cam 37.

As shown in the figure, when the handle 38 is horizontal and tilted away from the arm 31, the cam 37 (or the arm 31 is not pushed) and a relatively wide gap is formed between the meat pressure contact parts 330. In this state When the handle 38 is turned upward to the vertical position indicated by the two-dot chain line 38a, the cam 37 pushes the arm 31 toward the arm 30, and the workpiece W can be sandwiched between the meat pressure contact parts 33. In order to enable movement of the arm 31, the upper end of the arm 31 is bolted to a member 41 via a leaf spring-like part 040.The member 41 is fixed to the lower end of the arm 21 so as to Part 4
A portion 040 is fixed to both sides of the arm 30 by a bolt 42 at the upper end of the arm 30.

As shown in FIG. 5, which is a view taken along arrow v-■ in FIG.
It is bolted to 1. The arm 30 and member 40
are fixed in pairs to both ends of the member 41. The carbon brushes 27 are fixed to both ends of a member 43 parallel to the member 41, and this member 43 also has an intermediate portion attached to the arm 21. It is bolted to the arm 21.3.
1 and member 41 are made of copper, member 40 is made of phosphor bronze, arm 3
1 is made of stainless steel, and both are coated.

As shown in FIG. 1, there are partition walls 50 at the upstream and downstream ends of the plating tank 2.
is set up. A guide 51 and a sealing mechanism 52 are provided on the upstream and downstream sides of the partition wall 50, respectively.As shown in FIG. 6, which is an enlarged partial view of FIG. The guide 51 is provided with a slit-shaped opening 53 (or an outlet).The guide 51 is plate-shaped and is fixed to the upstream side surface of the partition wall 50 and the periphery of the inlet 53 when seen in the conveyance direction F, and is fixed to the upstream side of the partition wall 50 and the periphery of the inlet 53. Inclined protrusion 5 for guiding the workpiece
It is equipped with 5. The sealing mechanism 52 includes a pair of vertical binge rollers 5 and 6 located on both sides of the workpiece W, and a roller 56.
A case 57 that supports the.

The case 57 includes a wall surface 58 fixed to the partition wall 50, a wall surface 59 surrounding the roller 56 from the side wall 9 side, and a wall surface 60 surrounding the roller 56 from the side opposite to the wall surface 58. The outer peripheral surface of the roller 56 is slidably in contact with the inner surfaces of the wall surface 58 and the wall surface 60, and these contact portions are generally assembled in a sealed state.

As shown in FIG. 7, which is a Vfl-Vll Igi side view of FIG. 6, the roller 56 has an outer skin 62 of a flexible elastic body with a rubber hardness of 50 or less on the outer surface (outer peripheral surface and both upper and lower end surfaces) of a hollow metal body 61. It is constructed by covering the The outer skin 62 is made of natural rubber to prevent corrosion due to processing liquid.

Both upper and lower end surfaces of the roller 56 (outer skin 62) are also fitted to the top wall 63 and bottom wall 67'I of the case 57.

They are in slidable contact in the closed state. The roller 56 is provided with vertical showers 1-66, 67 projecting downward and upward. To the lower shower 1 66 is supported by a bearing 68 fixed to the case 57 (frame), and gears A are engaged with the lower end of the shaft 66 that protrudes downward from the bearing 68.
769 is fixed. The upper shaft 67 is supported by a bearing 70 fixed to the case 57. In FIG. 7, the shifter 67 on the right side protrudes above the bearing 70.
A drive mechanism 71, which will be described later, is connected to its lower end.

As is clear from the above description, the pair of rollers 56 and the case 57 are constructed as a single unit, and when this unit is fixed to the partition wall 50 in FIG. It can be installed in

When one roller 56 is rotated by the drive mechanism 71 via the shaft 67, the other roller 56 is rotated in the opposite direction via the shaft 66 and gear 69, and the rework W is held between the pair of rollers 56. It can be transported by hand. The roller 56 moves the workpiece W at the same speed as the workpiece conveyance speed by the conveyance mechanism 5 (FIG. 2).
Therefore, a DC motor is used as the drive mechanism 71 in FIG. 7. Moreover, instead of this DC motor, the following modification can also be adopted.

That is, in FIG. 3, the sprocket 72 that meshes with one chain is placed on the side of the chain 19, and the vertical shaft 73 of the sprocket 72 is connected to the sprocket 72 in FIG. Shower I =
It can also be connected to 67.

As shown in FIG. 1, the partition walls 50 of the pre-treatment tank 1 and the post-treatment tank 3 are also provided with slit-shaped entrances and exits through which the workpieces W can pass. W only needs to be conveyed in the horizontal direction (F). Further, although the sealing mechanism 52 is provided only in the plating tank 2, the guide 51 is also provided in the pre-treatment tank 1 and the post-treatment tank 3. Pretreatment tank 1
In the post-processing tank 3, a vertical pipe 75 with a shower nozzle on the right side is arranged on both sides of the part through which the workpiece W passes.
Water or processing liquid is sprayed from the vibrator 75 onto both sides of the work W.

(Function) A series of processing is carried out by transporting the work W in the horizontal direction by the transport mechanism 5 to pre-processing tank 1, plating tank 2, and post-processing 4! This is done by passing through W3. This conveyance work is carried out by clamping the upper edge of the workpiece W with the clamp 22 shown in FIG. 3 and moving the arm 21 with the chain 19 in this state. In addition, in the plating tank 2, power is supplied from the power supply member 23 to the power supply plate 26, and the power supply member 24.2
5 through the brush 27 to the arm 21, and from the arm 21 the member 41 in FIG. 4, the arm 30, 31, and the pin 3.
2, power is supplied to the workpiece W. In this power supply operation, power is supplied to the workpiece W by the pressure welding part 3 that is in pressure contact with the workpiece W.
Since the pressure contact portion 33 is located above or approximately at the same position as the level L of the plating solution, no plating layer is formed on the portion of the workpiece W that the pressure contact portion 33 contacts. The plating liquid in Metsa'41J 2 is connected to the inlet 53 in Figure 6.
However, since the roller 56 is in pressure contact with the workpiece W and is also in sealed contact with the inner surface of the case 57, the plating solution is almost completely prevented from flowing out. Although the roller 56 is in pressure contact with the workpiece W, the outer skin 62 of the roller 56 is made of rubber, and since the roller 56 rotates in synchronization with the conveyance operation of the workpiece W by the device 5, [ ”-Ra56 never scratches the workpiece W.

(Effects of the Invention) As explained below, according to the present invention, it is possible to eliminate the need for lifting and lowering the workpiece W in a series of plating processing operations, and to transport the workpiece W only in the horizontal direction.
It is possible to shorten the time for conveying the workpiece W and improve production efficiency. Also r? Equipment costs can also be reduced because there is no need for equipment for raining down. Furthermore, since the workpiece W is transported only in the horizontal direction, it is sufficient to hang the workpiece W by holding its upper end with the clamp 22, and the conventional frame-shaped jig can be abolished, which also reduces costs. At the same time, loading and unloading operations can be simplified.

(Modification) As the sealing mechanism 52, a lip-shaped elastic body may be used instead of the roller 56, or a structure may be adopted in which the width of the inlet 53 is simply narrowed to a value extremely close to the thickness of the workpiece W. You can also do it.

[Brief explanation of the drawing]

Figure 1 is a schematic plan view of the embodiment, Figure 2 is an enlarged cross-sectional view taken along the line ■-■ in Figure 1, Figure 3 is an enlarged partial view of Figure 2, and Figure 4 is the third
An enlarged partial view of the figure, Figure 5 is a view from the ■-■ arrow in Figure 4, and Figure 6
The figure is an enlarged partial view of FIG. 1, and FIG. 7 is a sectional view taken along line Vl--■ in FIG. 6. 1.2.3... Processing tank, 5... Workpiece conveyance mechanism, 50... Partition wall, 52... Seal mechanism, 5
3... Entrance, F... Conveyance direction, W... Work Patent applicant Uemura Kogyo Co., Ltd.

Claims (1)

[Claims] A plurality of processing tanks for plating processing are arranged in series in the workpiece transport direction, and a workpiece transport mechanism that transports plate-shaped workpieces in a vertical position along the surface in a horizontal direction is placed above the processing tanks. A plate-shaped workpiece, characterized in that a partition wall between adjacent processing tanks is provided with an inlet/outlet through which the workpiece passes, and the inlet/outlet is provided with a sealing mechanism that prevents and covers the processing liquid from flowing out from the processing tank. Nometsugi processing equipment.