JP2526221B2 - Surface treatment equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure of a surface treatment apparatus for performing a plating treatment while conveying an object to be treated such as a plate.

[Conventional technology]

2. Description of the Related Art Conventionally, for example, when a plate-shaped object to be processed such as a lead frame used for electronic parts such as integrated circuits and transistors is plated, as shown in FIG. The hooks at the tips of the spring-like suspensions B, B whose base ends are attached to the top and bottom are locked to the object to be processed C, and the object to be processed C together with the suspension frame A is a processing tank such as a plating tank. (Not shown)
I'm trying to soak in.

As described above, it is necessary to manually attach / detach the object to be processed C to / from the suspension frame A via the suspension tool B, which is very time-consuming, and the efficiency of the surface treatment work is lowered, and the mechanization is performed. There was also the problem that it could not be automated.

In view of this, in Japanese Patent Laid-Open No. 61-87900, a horizontally long V-shaped plate is fixed upward and open along the upper surface of the horizontal end of the rod-shaped support arm that is rotatably connected to the circulating mechanism. In addition, a V-shaped wire holding piece is also erected at an appropriate interval in the tip horizontal portion to form a recess for mounting an object to be processed such as a lead frame. While the base side of the support arm is slidably contacted with the guide rails arranged along the side, the guide rail is formed in an upward convex shape at a position where the object to be treated is pulled up from the liquid in the treatment tank. It has been proposed that the tip side is pushed up so that the horizontal portion of the tip of the moving support arm and the object to be processed can be overcome without colliding with the outlet side wall of the processing tank.

[Problems to be Solved by the Invention]

However, in the above-mentioned prior art, when the horizontal end portion of the support arm and the object to be processed are pulled up from the processing liquid in the processing tank, the processing liquid adhered to the recess in the horizontal end portion or the object to be processed drips. A large amount of the treatment liquid is taken out of the treatment tank while being adhered to the recesses in the horizontal portion of the tip and the object to be treated.Therefore, the treatment liquid must be replenished frequently as the surface treatment work progresses. However, there is a problem in that the labor and the running cost for replenishing the processing liquid become large.

The present invention has been made to solve the above conventional problems, and a surface treatment apparatus capable of reducing the running cost of the surface treatment by preventing carry-out of the treatment liquid in the treatment tank with a simple configuration. It is intended to provide.

[Means for solving problems]

In order to achieve the above object, in the present invention, a lateral arm vertically rotatably connected to a transfer means arranged along a side portion of the surface treatment tank is provided in the surface treatment tank by a guide means provided along the transfer means. It is constructed so that it can be lifted up and down so as to be immersed in the treatment liquid, and a support frame is fixed to the tip end side of the arm, and a plate-shaped object to be immersed in the surface treatment tank is mounted on the support frame. Providing upwardly open support parts to be placed at appropriate intervals,
On the inner surface of the support frame, a conductor that contacts the object to be treated is provided, while on the outlet side of the surface treatment tank, the transfer means is provided in the surface treatment tank and above the processing liquid surface. The brush body that slides in contact with at least the lower portion of the support frame that has been lifted up from the treatment liquid is arranged, and the treatment liquid collected by the brush body is returned to the surface treatment tank.

[Operation and effect of the invention]

In this way, the lateral arm vertically rotatably connected to the transfer means arranged along the side portion of the surface treatment tank is immersed in the processing liquid in the surface treatment tank by the guide means provided along the transfer means. Since it is structured so as to be lifted up and down, it is possible to repeat the operations of immersing and lifting the object to be processed placed on the support frame in the processing liquid in the processing tanks at various places.

Further, according to the present invention, since the support portion of the support frame is formed to be open upward, it is possible to easily place a plate-shaped object to be processed on the support frame and to perform the treatment. The object to be processed can be easily taken out, and further, since the inner surface of the support frame is provided with a conductor capable of contacting the object to be processed placed as described above, the conventional method Since it does not require the work of locking and removing with the energizing spring for suspending and suspending, the above-mentioned placement and removal operations can be easily performed with a mechanical chuck or robot machine. It is also possible to automate the entire processing equipment.

Further, a brush body is provided at a position above the surface of the processing liquid on the outlet side in the processing tank, and the brush body is slidably contacted with at least a lower portion of the support frame body which is lifted up from the processing liquid and transferred. Therefore, the treatment liquid adhering to the lifted support frame or the treatment liquid accumulated between the support frame and the object to be treated due to surface tension is transferred via the brush body which comes into contact with the transfer of the support frame. The effect is that it can be swept quickly.

Moreover, since the brush body is located inside the processing tank and above the processing liquid surface, the swept processing liquid is automatically collected in the processing tank and the amount taken out of the processing tank is greatly increased. Therefore, the running cost in the surface treatment process can be significantly reduced.

〔Example〕

Next, an embodiment of the present invention will be described. In the drawings, reference numeral 1 is a transfer means 2 such as an endless chain conveyor arranged in a quadrangular shape in plan view, and the transfer means 2 is arranged outside the transfer means 2. Degreasing tank 3a, water washing tank 3b, pickling tank 3c, neutralization tank 3d,
Surface treatment equipment consisting of various treatment tanks 3 such as plating tank 3e,
The transfer means 2 is formed by winding a chain 7 around a chain sprocket 6 attached to a vertical drive shaft 4 connected to a power source such as a motor, and a rotary shaft 5, and horizontally rotating the chain 7 at the lower end side. While the rollers 8 are supported by a pair of left and right guide rails 9, a pair of left and right vertically rotating rollers 11, 11 is provided on a movable body 10 which is attached to the upper end side of the chain 7 at appropriate intervals in the transfer direction. Vertically rotating roller 11 with horizontal U-shaped guide rail 12
Rotatably fit in.

A horizontally projecting arm 14 is vertically rotatably connected to the upper end of each moving body 10 via a horizontal pin 13, and the tip end side of the arm 14 is inserted into the processing tank 3 from above the side of the processing tank 3. Face
A supporting frame body 15 made of an electrically insulating material is fixed to the tip portion with a bolt 16.

The support frame 15 has a base portion 15a which is laterally long in a direction perpendicular to the transfer direction, and a U-shape or a U-shape in a side view which protrudes upward integrally with the base portion 15a at appropriate intervals along the longitudinal direction. , A support member 15b having an upward opening such as a V-shape, and an object 17 to be processed such as a lead frame made of a metal plate having a lateral length along the base 15a is slanted so as to contact the inner surface of each support member 15b. A conductor 18 made of copper or the like is provided on the upper surface of the base portion 15a and the inner side surface of each support portion 15b of the support frame body 15 so as to be in contact with the object to be treated 17 and to be energized.

Reference numeral 19 is a roller rotatably supported by a bracket 20 projecting downward on the lower surface of the arm 14, and reference numeral 21 is a rail shape or the like that makes the support frame 15 vertically movable by contacting the roller 19. Guide means of the guide means 21
Is arranged along the guide rail 12 and then along the chain 7, while the upper surface of the guide means 21 is at a position higher than the entrance of each processing tank on the front side in the transfer direction, and in each processing tank 3, the support frame body is provided.
Along with 15, the object to be treated 17 is positioned so low that it can be immersed in the treatment liquid 22, and the support frame 15 is lifted up diagonally on the outlet side of the treatment tank 3 to a position higher than the upper edge of the treatment tank 3. Thus, it is formed in a curved shape in the vertical direction.

The guide means 21 is provided with an electrode bus bar 25 on its upper surface, and the electric power from the bus bar 25 connected to the power source is passed through the metal roller 19, the arm 14 and the conductor 18. The object 17 can be energized, but the bus bar 25 for electrodes may be configured to energize the conductor 18 via an electrode brush (not shown) provided at another portion of the arm 14. .

Reference numeral 23 is a brush body disposed in the upper part on the outlet side in each processing tank 3, and the brush body 23 is provided at a position higher than the processing liquid 22 on the upper surface of the gutter plate 24 which is obliquely provided downward in the forward direction. The lower surface of the support frame 15 and the lower surface of the object to be processed 17 which are fixed and are soaked in the processing liquid 22 in the processing tank 3 and then moved obliquely upward by the guide means 21 are As it is transferred, the treatment liquid 22 that is slidably contacted with the brush body 23 and adheres to the support frame body 15 and the like is swept away, and the treatment liquid 22 is collected in the treatment tank 3.

With this configuration, the support frame 15 is provided with the upwardly open support portion 15b, so that the operation portion 27 for supplying and discharging the object to be treated 17 in the surface treatment facility 1 is as shown in FIG. From the upper side of the support frame 15 with the chuck 28
17, the object 17 to be processed placed on the support frame 15 is supported by the lower corners and the upper edge of the plurality of support portions 15b having an upward U-shaped cross section, and has a substantially oblique shape. Held in.

Then, the base portion 15 of the electrically insulating support frame 15 is provided.
The conductor 18 on the top surface and the bottom plate of each support portion 15b can be electrically connected to the bus bar 25 via the metal bolt 16, the arm 14 and the roller 19, while the support frame 15 is connected to the roller 19 Since the guide means 21 is supported via the movable body 10, the movable body 10 and the arm attached to the chain 7 according to the movement of the chain 7.
The support frame 15 moves forward via 14 and when it exceeds the inlet end of the processing tank 3 such as the degreasing tank 3a, the height position of the guide means 21 becomes low, and as shown in FIG. The base portion 15a is immersed in the treatment liquid 22 in the treatment tank 3 in a substantially horizontal state, and the surface is appropriately treated.

On the outlet side of the processing tank 3, the upper surface of the guide means 21 becomes higher, so that the arm 14 rotates upward again around the lateral pin 13 so that the object to be processed 17 is processed together with the support frame 15. It is lifted from the liquid side. At this time, the object to be processed 17
Moves to the base side with respect to the arm 14, so that the object to be processed 17 does not fall off the support frame 15.

Then, in the processing tank 3, on the outlet side, the processing liquid 22
Since the brush body 23 is provided at a position higher than the surface, the support frame body is supported by the brush body 23 as the support frame body 15 is transferred.
The lower surface of 15 and the lower edge of the object to be processed 17 are brought into sliding contact with each other, and the support frame 15
The treatment liquid 22 adhering to the object to be treated 17 rapidly flows down along the brush body 23, and the treatment liquid 22 can be collected in the treatment tank 3 along the gutter plate 24. Therefore, the amount of the processing liquid 22 carried out as drops from the support frame 15 or the object 17 to be processed outside the processing tank 3 becomes large as in the case where there is no conventional recovery device. This can be reliably prevented, and the running cost associated with the replenishment of the processing liquid can be reduced.

In this way, it is sufficient to repeat the operations of dipping and lifting the object to be processed 17 in the processing baths 3 at various places, and taking out the object to be processed 17 that has been processed by the operating section 27 by the chuck 28. According to the above, the support portion 15b of the support frame body 15 can be mounted with an object 17 to be processed which is open upward and a plate-like object can be placed, and the object to be processed placed on the inner surface of the support frame body as described above. Since the electric conductor 18 that can be brought into contact with the object is provided, it is not necessary to lock the object to be processed 17 with a current-carrying spring that suspends and suspends the object to be processed as in the conventional case.

The conductor 18 provided on the support portion 15b is the support portion 15b.
By providing not only on the upper surface of the bottom plate but also on the vertical inner surface of the support portion 15b as shown by the dashed line in FIG. 3, it is possible to increase the chance of contact with the object to be processed 17. Further, the arm 14 is extended rearward from the lateral pin 13, a roller 19 is provided on the upper surface of the extension, and the support means 15 is elevated by the guide means 21 that abuts on the upper surface of the roller 19. You may.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a schematic plan view of a surface treatment facility, Fig. 2 is an enlarged cross-sectional view taken along line II-II of Fig. 1, and Fig. 3 is III- of Fig. 1. III Partial enlarged cross-sectional view, 4th
FIG. 4 is a plan view taken along the line IV-IV in FIG. 2, FIG. 5 is an explanatory view of the operation of the operating portion, and FIG. 1 ... Surface treatment equipment, 2 ... Transfer means, 3 ... Treatment tank,
4 ... Drive shaft, 7 ... Chain, 8 ... Horizontal rotation roller, 9,
12 ... Guide rail, 10 ... Moving body, 11 ... Vertically rotating roller, 13 ... Horizontal pin, 14 ... Arm, 15 ... Support frame, 15
a …… base part, 15b …… support part, 16 …… bolt, 17 …… object to be treated, 18 …… conductor, 19 …… roller, 21 …… guide means, 22 …… treatment liquid, 23 …… brush Body, 24 ... Gutter, 28 ...
…Chuck.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location C25D 21/00 C25D 21/00 B

Claims (1)

(57) [Claims] 1. A horizontal arm, which is vertically rotatably connected to a transfer means arranged along a side portion of the surface treatment tank, is immersed in the processing liquid in the surface treatment tank by a guide means provided along the transfer means. The support frame is fixed to the tip end side of the arm, and the plate-like object to be dipped in the surface treatment tank is placed on the support frame to open upward. The supporting portions are provided at appropriate intervals, and the conductor that contacts the object to be treated is provided on the inner surface of the supporting frame, while the outlet side of the surface treating tank is inside the surface treating tank. A brush body is disposed above the surface of the treatment liquid and is in sliding contact with at least a lower portion of the support frame that is lifted from the treatment liquid by the transfer means, and the treatment liquid recovered by the brush body is returned to the surface treatment tank. A surface treatment device characterized by the above.