TWM576171U - Fixing type cathode conductive device - Google Patents

Abstract

A fixed cathode conductive device comprises: a wire portion; a plate head electrode portion electrically connected to a front end of the wire portion; a rigid sleeve portion having a mounting slider at an end thereof, the mounting slider has a sliding flange, and the wire portion is subjected to a rigid sleeve The tube portion is covered and fixed, the electrode portion of the plating head is disposed at the front end of the rigid sleeve portion, and the mounting slider is electrically connected to the rear end of the wire portion; the mounting base has a sliding groove, a limiting stopper and an elastic electrode, and the sliding is installed The block is disposed in the chute, and the sliding flange of the mounting slider is limited to the limiting baffle, and the elastic electrode electrically contacts the mounting slider.

Description

Fixed cathode conductive device

This creation relates to a cathode conducting device for electroplating, and more particularly to a fixed cathode conducting device for use in a barrel plating apparatus.

Barrel plating is a method in which a certain amount of work (usually a plurality of small parts) is placed in a drum, and a metal layer is plated on the work based on the principle of electrolysis plus the roll of the drum. The working object to be plated is placed in the drum and the plating solution in the plating tank flows into the drum. When energized, the electric field acts to cause the metal ions to pass through the cathode wire and the plating solution in the drum to be reduced to metal plating on the workpiece. Rolling of the rollers ensures that a plurality of workpieces are turned on to form a plating.

The workpiece is continuously tumbling in the drum, and the contact condition between the workpiece and the cathode affects the transmission stability of the barrel plating current. The distance between the part in the drum and the cathode affects the distribution of current on the small part, so that the cathode is electrically conductive. The design of the device is one of the important factors in determining the quality of the coating in the barrel plating system.

The conventional cathode conductive device is a soft conductive wire device. During the barrel plating process, the flexible conductive device is liable to be unable to fix the cathode conductive device due to rolling of the plated parts, or the position of the cathode conductive device is barrel-plated due to aging of the soft conductive material. The process has been mutated all the time, resulting in a change in current (under the condition of constant current, the phenomenon of voltage going up and down), affecting the quality of the coating.

In view of the shortcomings of the above-mentioned prior art, the creator feels that he has not perfected it, exhausted his mind and researched and overcome it, and developed a fixed cathode conductive device, which can provide stable cathode power supply during the barrel plating process. In order to produce a uniform coating on the work, the quality of the barrel plating is improved.

The fixed cathode conductive device of the present invention comprises: a wire portion; a plate head electrode portion electrically connected to a front end of the wire portion; and a rigid sleeve portion having a mounting slider at an end thereof, the mounting slider having a sliding flange The lead portion is covered and fixed by the rigid sleeve portion, the plating head electrode portion is disposed at a front end of the rigid sleeve portion, the mounting slider is electrically connected to a rear end of the lead portion, and the mounting base has a sliding The slot, the limiting block and the elastic electrode are disposed on the sliding slot, and the sliding flange of the mounting slider is limited to the limiting bracket, and the elastic electrode electrically contacts the mounting slider.

In the fixed cathode conductive device of the same state, the wall of the sliding slot has fastening means for fastening the mounting slider between the sliding slot and the limiting bracket.

In the same fixed cathode conductive device of the present invention, the elastic electrode includes a load carrying electrode and a spring, and the spring pushes the load carrying electrode to electrically contact the mounting slider.

In the fixed cathode conductive device of the same state of the present invention, the load carrying electrode has a flat portion to electrically contact the mounting slider.

In the same fixed cathode conductive device of the present invention, the load-bearing electrode has an annular curved surface to connect the circumference of the planar portion.

In the fixed cathode conductive device of the same state, the limiting baffle has an L-shaped cross-sectional shape, and the sliding flange of the mounting slider is inserted into the chute from the opening of the top of the limiting baffle and is limited to the limit. Inside the block.

In the fixed cathode conductive device of the same state, a fixing portion is further connected to the mounting base.

In order to fully understand the purpose, features and effects of this creation, the following specific examples, together with the attached drawings, provide a detailed description of the creation, as explained below:

1 and 3 are respectively an exploded schematic view and a combined schematic view of the fixed cathode conductive device 10 of the present embodiment. As shown in FIG. 1 and FIG. 3, the fixed cathode conductive device 10 of the present embodiment includes: a lead portion 14; a plate head electrode portion 16 electrically connected to a front end of the lead portion 14; and a rigid sleeve portion 18 having an end portion thereof The slider 182 is mounted. The mounting slider 182 has a sliding flange 1822. The lead portion 14 is covered and fixed by the rigid sleeve portion 18. The plating head electrode portion 16 is disposed at the front end of the rigid sleeve portion 18, and the slider 182 and the wire are mounted. The rear end of the portion 14 is electrically connected; the mounting base 20 has a sliding slot 264, a limiting baffle 22 and an elastic electrode 24, the mounting slider 182 is disposed on the sliding slot 264, and the sliding flange 1822 of the mounting slider 182 is limited to the limit The position piece 22 (Fig. 3), the elastic electrode 24 electrically contacts the mounting slider 182.

The lead portion 14 is linearly extended in a strip shape, connected to the plating head electrode portion 16 at the front end, and connected to the mounting slider 182 at the rear end. In the present embodiment, the rigid sleeve portion 18 further has a truncated conical retaining portion 184 that holds the plating head electrode portion 16 at the front end of the rigid sleeve portion 18 except for the fixed plating head electrode portion 16. The holding portion 184 also provides a transition shape between the rigid sleeve portion 18 and the plate head electrode portion 16 to prevent stress concentration of the joint between the plating head electrode portion 16 and the rigid sleeve portion 18 due to the pressing of the workpiece. The plating head electrode portion 16 is easily damaged or peeled off. The rigid sleeve portion 18 is a hollow tubular member that is not easily bent or is not easily deflected. When the rotary drum is driven by the motor to rotate, even if the plating solution and the workpiece to be plated are both stirred and tumbling in the rotary drum, the fixed type The cathode conductive device is still maintained in a fixed position and does not deform or displace as the plating solution or the workpiece rolls over.

In the present embodiment, the plating head electrode portion 16 has a circular arc side, which helps maintain the fluidity in the rotating drum, and can smoothly swing around the plating head electrode portion 16 when the working object is turned over in the plating solution. Reduce the situation where the work is blocked and affect the roll of the work. In other embodiments, the plating electrode portion may also be spherical or otherwise shaped.

The mounting slider 182 may have contacts on the inner side for connecting to the elastic electrode 24 when the mounting slider 182 is mounted on the mounting base 20, and the current from the elastic electrode 24 is transmitted to the lead portion 14 for transfer to the plating The head electrode portion 16 generates a reaction in the plating solution.

In the present embodiment, the lead portion 14 is covered and fixed by the rigid sleeve portion 18, so that it does not deform or move with the flow of the plating solution or the workpiece during the barrel plating process, thereby providing stability. The barrel plating environment helps to improve the tumbling of the workpiece, thereby achieving uniform plating and improving the quality of the coating.

In addition, the combined configuration of the mounting slider 182 and the mounting base 20 allows the stationary cathode conductive device 10 to be easily installed or maintained. In the installation or maintenance, the mounting slider 182 can be placed along the sliding slot 264 of the mounting base 20, so that the plating electrode portion 16 or the lead portion 14 of the current end needs to be replaced due to aging or damage. It can be quickly disassembled and assembled by maintenance personnel.

As shown in FIG. 1, in the mounting base 20, the mounting base 20 has boss portions 26 on both sides, and the chutes 264 are formed on the inner sides of the boss portions 26 on both sides. The boss portion 26 functions as a limit mounting slider 182, and the chute 264 functions as a guide so that the mounting slider 182 can smoothly slide in the chute 264. In this embodiment, the two limiting baffles 22 are disposed on the convex portions 26 on both sides. In the embodiment, the limiting baffle 22 and the convex portion 26 are integrally formed, but are not limited thereto. It can also be assembled for assembly. Each of the limit stoppers 22 has an L-shaped cross-sectional shape. The sliding flange 1822 of the mounting slider 182 is placed in the sliding slot 264 by the opening 22o of the top of the limiting bracket 22 (here, in the upper part of the figure, that is, near the hanging portion 122) and is limited to the limiting bracket 22 In order to make the mounting slider 182 reach the positioning, the installation work can be made more labor-saving, and the positioning operation is not required to be adjusted too much, as long as the mounting slider 182 is positioned by the limiting bracket 22 when entering the positioning along the sliding slot 264. can.

The fixed cathode conductive device 10 in this embodiment further includes a fixing portion 12 connected to the mounting base 20 for loading the fixed cathode conductive device 10 into the barrel plating apparatus. As shown in FIGS. 1 , 3 , and 5 , in the present embodiment, the fixing portion 12 includes a hanging portion 122 and a base portion 124 . When the hanging portion 122 and the base portion 124 are integrally connected and viewed from the side, both An obtuse angle is formed between them (see Figure 5). The base portion 124 is located below the mounting base 20, and the mounting base 20 is fixed to the base portion 124 by screws or the like. The base portion 124 extends upwardly from the two sides to the outside of the raised portion 26 (Fig. 3). Further, the suspension portion 122 can be assembled to the top beam 4 of the barrel plating apparatus 1 at which time the rigid sleeve portion 18 penetrates the rotary drum 6 at a specific angle due to the obtuse angle formed between the suspension portion 122 and the base portion 124. (Figure 5). Compared with the conventional flexible wire, that is, only the flexible wire is suspended from above or the flexible wire is placed in the rotating drum to be uncontrolledly bent or moved, the fixed cathode conductive device in this embodiment can be The angle between the suspension portion 122 and the base portion 124 is designed according to actual process conditions to adjust the angle of the rigid sleeve portion 18 so as to penetrate deep into the rotating drum at a specific angle, and to maintain this state for barrel plating.

As shown in FIGS. 1 and 3, the limit stoppers 22 having an L-shaped cross-sectional shape form a barrier on the X-Y plane and the X-Z plane, respectively, so that the slider 182 can be mounted in a limited position. Further, the width of the space formed between the limit stops 22 on both sides is smaller than the width of the chute 264. The portion of the mounting slider 182 between the sliding flanges 1822 on both sides is thicker than the two side sliding flanges 1822 to form the central projection 1824, so when the mounting slider 182 is mounted to the mounting base 20, the sliding flange 1822 is limited In the wider chute 264, the central projection 1824 is positioned between the narrower side limit stops 22, so that the mounting slider is more stably positioned.

Refer to Figures 1 and 2. The resilient electrode 24 includes a load carrying electrode 242 and a spring 244 (Fig. 2). When the mounting slider 182 is not positioned to the mounting base 20, the loaded electrode 242 is supported by the spring 244, and a portion of the loaded electrode 242 is pushed up to the outside of the mounting base 20. 3 and FIG. 4, after the mounting slider 182 is positioned to the mounting base 20, the mounting slider 182 presses the loaded electrode 242 to the inside of the mounting base 20, and the loaded electrode 242 is pressed to compress the spring 244. The resistance from the spring 244 allows the planar portion 242f of the top end of the load-bearing electrode 242 to positively engage the contact on the mounting slider 182, that is, the spring 244 pushes the contact electrode 242 into electrical contact to mount the slider 182.

In the present embodiment, the top of the load-bearing electrode 242 is a flat flat portion 242f for stably electrically contacting the mounting slider 182. In addition, as shown in FIG. 1-2, the load-bearing electrode 242 has an annular curved surface 242c (or a slope) to connect the circumference of the flat portion 242f, and when the mounting slider 182 has not been assembled to the mounting base 20, the annular curved surface 242c A part of it is exposed on the outside of the mounting base 20. Therefore, when the mounting slider 182 is assembled to the mounting base 20, the mounting slider 182 can move the loaded electrode 242 along the annular curved surface 242c as the mounting slider 182 is pushed along the sliding groove 264 to the positioning process. Push into the mounting base 20. In the case of the removal/assembly, since the mounting slider 182 can be accessed from the opening 22o provided at the top of the limiting stopper 22 (refer to FIGS. 1 and 3), the replacement of the component can be performed without removing the limiting stopper 22, The convenience of maintenance is further improved.

Refer to Figure 3. When the mounting slider 182 is positioned along the chute, the displacement in the X direction is restricted by the chute 264/limit baffle 22 (the L-shaped middle strip portion), and the displacement in the Z direction is also received by the limit stop 22 (L-shaped short strip part) is limited. At this time, the wall of the sliding groove 264 may further have fastening means for restricting the displacement of the mounting slider 182 in the Y direction when the base 20 is mounted, and fastening the mounting slider 182 to the sliding groove 264 and the limit. Between the flaps 22. In the present embodiment, the fastening means are screws 2642 from both sides. The screws 2642 are respectively locked from the extending holes 1242 of the both sides and the screw holes 262 on the bosses 26 and locked into the wall of the sliding groove 264 until they abut against the slider flange 1822. In this embodiment, as shown in FIG. 1 and FIG. 3, there are three screw holes 262 extending through the extending wall 1242 and the protruding portion 26 on both sides. In the embodiment, only one screw 2642 is locked on both sides. The number of the screw 2642 and the screw hole 262 is not limited, and may be appropriately increased or decreased as needed.

Hereinafter, how the fixed cathode conductive device 10 of the present invention functions will be described in conjunction with other configurations in the barrel plating apparatus 1. Referring to FIG. 5, the barrel plating apparatus 1 includes a plating tank 2, a plurality of top beams 4, a plurality of rotating drums 6, a plurality of rotating transmissions G, and a plurality of fixed cathode conductive devices 10. A plurality of laterally extending top beams 4 are disposed along the length of the plating tank 2, and each of the top beams 4 is loaded with two rotating drums 6, and FIG. 5 is a schematic transverse cross-sectional view of one of the top beams 4. The top beam 4 is provided with a carrying platform 42 for carrying the rotating drum 6 and the rotary transmission G. As shown, the cross section of the loading platform 42 has an inverted Y shape with a rotating drum 6 and a set of rotations on both sides thereof. Transmission G. The fixed cathode conductive device 10 is fixed to the top beam 4 through the fixing portion 12. After the fixed cathode conductive device 10 is assembled on the top beam 4, the fixed cathode conductive device 10 is deep into the rotating drum 6 at a specific angle. In this state, the rotating drum 6 and the stationary cathode conductive device 10 are The top beam 4 moves in the height direction of the plating tank and follows.

In the present embodiment, the rotary transmission G is a transmission combination having a first gear G1, a second gear G2, and a tilt-configured base gear G3. The rotary drum 6 is obliquely fixed to the base gear G3, and the three gears are disposed to interlock with each other. When driven by the motor, the first gear G1, the second gear G2, and the base gear G3 are sequentially rotated and rotated, and The rotary drum 6 disposed on the base gear G3 rotates.

In the present embodiment, the side wall of the rotary drum 6 is a sieve, and the plating solution enters or discharges the rotary drum 6 via the sieve. Further, the rotary drum 6 has a drum opening 6o above it, and the stationary cathode conductive device 10 projects into the rotary drum 6 from the outside of the rotary drum 6 via the drum opening 6o. When the workpiece rolls in the plating solution in the rotary drum 6, the plated electrode portion 16 (refer to FIG. 1) in the fixed cathode conductive device 10 is turned on to form a metal plating film on the surface of the workpiece.

The stationary cathode conductive device 10 is deeply penetrated into the rotary drum 6 by the outside of the rotary drum 6 via the drum opening 6o. Since the rigid sleeve portion 18 of the fixed cathode conductive device 10 covers and fixes the lead portion 14, it is ensured that the plated electrode portion 16 at the end thereof does not rotate with the rotating drum 6, and is always maintained during the barrel plating process. The stable position of the barrel is further ensured in the established position.

Referring to Table 1, Embodiment 1 is in the case of constant current (17A), the barrel plating apparatus shown in FIG. 5 has the fixed cathode conductive device 10 of the present invention; in Comparative Example 1, in the case of constant current (17A), The fixed cathode conductive device 10 in the barrel plating apparatus of Fig. 5 was replaced with a conventional flexible wire, the same conditions as in the first embodiment. As shown in Table 1, in the first embodiment using the fixed cathode conductive device 10 of the present invention, a relatively stable voltage is obtained, and the pressure difference is small, so that a barrel plating environment for stabilizing current distribution can be provided, thereby obtaining a relatively uniform Plating. [Table 1]  <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> </td><td> Comparative Example 1 </td><td> Example 1 < /td></tr><tr><td> Current </td><td> 17A </td><td> 17A </td></tr><tr><td> Voltage </td>< Td> 6.2～7.1V </td><td> 6.3～6.6V </td></tr><tr><td> Pressure difference </td><td> 0.9V </td><td> 0.3 V </td></tr></TBODY></TABLE>

The present invention has been disclosed in the above preferred embodiments, and it should be understood by those skilled in the art that the present invention is only intended to depict the present invention and should not be construed as limiting the scope of the present invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of this creation is subject to the definition of the scope of patent application.

1‧‧‧Rolling equipment

2‧‧‧ plating tank

4‧‧‧Top beam

6‧‧‧Rotating drum

6o‧‧‧Roller opening

10‧‧‧Fixed cathodic conductive device

12‧‧‧ Fixed Department

122‧‧‧ hanging section

124‧‧‧Base section

1242‧‧‧Extension wall

14‧‧‧Wire Department

16‧‧‧Headed electrode part

18‧‧‧Rigid casing

182‧‧‧Installation slider

1822‧‧‧Sliding flange

1824‧‧‧Central Highlights

184‧‧‧ Keeping Department

20‧‧‧Installation base

22‧‧‧Limited Blanks

22o‧‧‧ openings

24‧‧‧Elastic electrode

242‧‧‧Loaded electrodes

242c‧‧‧Circular curved surface

242f‧‧‧Flat Department

244‧‧ ‧ spring

26‧‧ ‧ raised parts

262‧‧‧ screw holes

264‧‧ ‧ chute

2642‧‧‧ Screws (fastening device)

42‧‧‧Loading platform

G‧‧‧Rotary transmission

G1‧‧‧First gear

G2‧‧‧second gear

G3‧‧‧ base gear

X, Y, Z‧‧ Direction

1 is an exploded perspective view of a fixed cathode conductive device according to an embodiment of the present invention. Fig. 2 is a side view showing the elastic electrode in an uncombined state in the fixed cathode conductive device of the embodiment. Fig. 3 is a schematic view showing the assembly of a fixed cathode conductive device according to an embodiment of the present invention. Fig. 4 is a side view showing the elastic electrode in a combined state in a fixed cathode conductive device according to an embodiment of the present invention. Fig. 5 is a schematic view showing the mounting of a fixed cathode conductive device according to an embodiment of the present invention in a barrel plating apparatus.

Claims (7)

A fixed cathode conductive device comprises: a wire portion; a plate head electrode portion electrically connected to a front end of the wire portion; a rigid sleeve portion having a mounting slider at an end thereof, the mounting slider having a sliding flange, the wire portion Covered and fixed by the rigid sleeve portion, the plating head electrode portion is disposed at a front end of the rigid sleeve portion, and the mounting slider is electrically connected to a rear end of the lead portion; the mounting base has a sliding slot and a limit The sliding piece and the elastic electrode are disposed on the sliding slot, and the sliding flange of the mounting slider is limited to the limiting blocking piece, and the elastic electrode electrically contacts the mounting sliding block. The fixed cathode conductive device of claim 1, wherein the wall of the chute has fastening means for fastening the mounting slider between the chute and the limiting baffle. The fixed cathode conductive device of claim 1, wherein the elastic electrode comprises a load-bearing electrode and a spring that pushes the load-bearing electrode to electrically contact the mounting slider. The fixed cathode conductive device of claim 3, wherein the load-bearing electrode has a flat portion to electrically contact the mounting slider. The fixed cathode conductive device of claim 4, wherein the loaded electrode has an annular curved surface to connect the circumference of the planar portion. The fixed cathode conductive device of claim 1, wherein the limiting baffle has an L-shaped cross-sectional shape, and the sliding flange of the mounting slider is placed in the chute by the opening at the top of the limiting baffle and is limited to Inside the limit stop. The fixed cathode conductive device of claim 1, further comprising a fixing portion connected to the mounting base.