JP6134045B1 - Electrode jig and plating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten an exchange work time of an object to be plated. An electrode jig 1 is a one-touch rotary type jig using an auxiliary anode made of titanium, a conductive first support member 3 having a bearing 31 attached to an anode 2, and a first support. The leaf spring 4 fixed to the member 3 and having a groove 41, an end portion detachably attached to the bearing 31, and a conductive rotation member 5 having a convex portion 52 that can be fitted to and removed from the groove 41, and a rotation member An auxiliary anode 6 fixed to 5 and a conductive second support member 9 which is attached to the cathode 7 and supports the object 8 having the recess 81 in a detachable manner. When mating, the auxiliary anode 6 is disposed at a position facing the recess 81. [Selection] Figure 1

Description

  The present invention relates to an electrode jig and a plating method for forming a film on an object to be plated.

Since plating is applied to the flat place where the coating is most easily applied, plating is easily applied to the flat place, but if the product has a dent, the coating is less likely to be applied compared to the flat place. The dent has the disadvantage that the plating becomes thinner. Therefore, there is a demand for plating firmly in the depression of the object to be plated. The plating to the site of the recess of the object to be plated, for which requires a considerable amount of technology, there are various requirements in the plating 冶 equipment manufacturers, in order to respond to the request, it puts out the idea in light of the trial and error, plating 冶 Nowadays, there is a demand for convenient products.

  In Patent Document 1, in order to reliably plate the conductive substrate 11 into the recess, the auxiliary electrode 12 (auxiliary anode) is used to form a coating on the recess. When this plating is finished, the auxiliary electrode 12 is bent and elastically deformed, the non-conductive substrate 11 as the object to be plated is removed, the next object to be plated is attached, and the auxiliary electrode 13 is elastically deformed to the original position. Are aligned.

Japanese Patent Laid-Open No. 2006-164294

  However, in Patent Document 1, there is a problem that in the replacement work of the object to be plated, the auxiliary electrode is bent and folded back manually, the position of the auxiliary anode is divided, and the precision of the plating thickness of the concave portion is low.

  Further, in Patent Document 1, since the auxiliary electrode is manually folded and folded, there is a problem that the efficiency of the work of replacing the object to be plated is low. In the flow work, the process time is fixed, the work of replacing the object to be plated, especially the positioning work of the auxiliary anode is complicated and time consuming, and the slowdown of the plating process is inevitable. It doesn't match and productivity becomes worse. In particular, in the structure of the complicated shape with the object to be plated, the number of auxiliary anodes is increased, the position is complicated, the alignment is complicated, and it is difficult to shorten the time for replacing the object to be plated. Met. For example, the attachment / detachment of the auxiliary anode is performed every time the product is indented, and there is a possibility that the auxiliary anode may injure the product to be plated inadvertently during replacement. is there.

  In the case of mass-produced products, a large number of objects to be plated are attached to the electrode jig, and a large number of platings are performed at a time. If the replacement work takes time, there is a risk that the work will stop in the case of a flow work. If the installation is not in time, the operation stop button will be pushed, and unless the flow operation is stopped, it will move without permission, and the operation of returning the position of the electrode jig will be difficult.

  Then, the subject of this invention is shortening the time of replacement | exchange work of the to-be-plated to-be-plated object which does not deform | transform an auxiliary anode.

The present inventors, as a solution to the problem, if you set the anodic cathode side 冶 again and again mounting the work, the site requiring plating thickness, by rotating the rotary auxiliary anode with a single touch, the plating thickness It has been found that this leads to improvement in accuracy and workability, and has led to the present invention.

That is, the electrode jig of the present invention is attached to an anode, and is attached to a conductive first support member having a bearing, a leaf spring fixed to the first support member and having a groove, and an end of the electrode jig to be detachable from the bearing. And a conductive rotating member having a convex portion that can be fitted and removed in the groove, an auxiliary anode fixed to the rotating member, and a conductive member that is attached to the cathode and supports the object to be plated having the concave portion in a detachable manner. A second support member, and when the convex portion is fitted in the groove, the auxiliary anode is disposed at a position facing the concave portion, and when the convex portion is not fitted in the groove, the auxiliary anode is the concave portion. It is arranged at a position not facing the is characterized Rukoto.

  It is preferable that the rotating member is a plate material, and the convex portion is fixed at a position of the plate material closer to the anode than the fixing position of the auxiliary anode.

  The auxiliary anode is preferably a rod, such as a round bar, but the cross-sectional shape may be an appropriate shape, and a plate material other than the rod, such as a square material or a flat plate, can also be adopted.

  Examples of the plating herein include zinc plating, chromium plating, nickel plating, and copper plating. Depending on the type of plating, the material of the auxiliary anode can be appropriately selected. For example, (1) In the case of chrome plating, the auxiliary anode is titanium, platinum, lead, and stainless steel are welded to this auxiliary anode, or an iron bar can be attached and detached with a screw at the tip of this auxiliary anode. (2) In the case of zinc plating, the auxiliary anode is titanium, and a steel bar is removably attached to the tip of this auxiliary anode with a screw. (3) In the case of nickel plating The auxiliary anode is titanium, and a nickel rod is removably attached to the tip of the auxiliary anode with a screw. Examples of the object to be plated include a metal object and a resin object.

The plating method of the present invention includes the following steps in a plating method for plating an object to be plated having a recess using an electrode jig having an anode and a cathode.
(1) Assembly process A conductive first support member having a bearing is attached to the anode, a leaf spring having a groove is fixed to the first support member, a conductive second support member is assembled to the cathode, and the auxiliary anode is fixed. The end of the conductive rotating member is attached to the bearing, the object to be plated having a recess is attached to the second support member, the rotating member and the auxiliary anode are rotated in a predetermined direction, and the convex portion is formed in the groove. The auxiliary anode is arranged at a position facing the concave portion by fitting by elastic deformation of the spring.
(2) is attached to the mobile device mounting process electrodes 冶 tool, is suspended,
(3) Plating process The electrode jig 1 is transported by a moving device, the work to be plated is immersed in the plating tank, and the work is pulled up.
(4) Replacement step The rotating member and the auxiliary anode are rotated in the direction opposite to the predetermined direction, and the convex portion is removed from the groove by elastic deformation of the leaf spring, thereby removing the auxiliary anode from the position facing the concave portion, The auxiliary anode is disposed at a position not facing the recess, the plated object to be plated is removed from the second support member, another plated object to be plated is attached to the second support member, By rotating the auxiliary anode in a predetermined direction and fitting the convex portion into the groove by elastic deformation of the leaf spring, the auxiliary anode is disposed at a position facing the concave portion.
A plating method characterized by comprising:

Positioning operation of the auxiliary positive electrode is simple can be greatly shortened replacement time of the object to be plated.

  It is possible to prevent the auxiliary anode from damaging the object to be plated at the time of replacing the object to be plated.

It is a perspective view of the electrode jig (auxiliary anode standing state) of the embodiment of the present invention. It is a perspective view of an electrode jig similarly (an auxiliary anode is a lying state). It is a left view of an electrode jig similarly. It is a front view of the auxiliary anode of an electrode jig similarly, a rotation member, and a to-be-plated object. It is a top view of the member except the member by the side of the cathode of an electrode jig similarly. It is a top view of the to-be-plated object similarly mounted | worn with an electrode jig. It is a right view of the leaf | plate spring of an electrode jig similarly. It is a rear view which similarly shows the state which the leaf | plate spring of the electrode jig elastically deformed. It is a top view of the rotation member of an electrode jig similarly. (A) It is a left view of the rotating shaft stopper of an electrode jig similarly, (b) It is a front view of the rotating shaft stopper of an electrode jig. (A) It is a side view which shows the modification of the auxiliary anode of an electrode jig similarly, (b) It is a side view which shows the other modification of the auxiliary anode of an electrode jig. (A) It is a side view which shows the modification of the leaf | plate spring of an electrode jig similarly, (b) It is a side view which shows the other modification of the leaf | plate spring of an electrode jig. It is explanatory drawing which similarly shows the usage method of an electrode jig.

  The electrode jig 1 according to Embodiment 1 of the present invention is a one-touch rotary jig using a titanium auxiliary anode, and is provided with a conductive first support member 3 having a bearing 31 attached to the anode 2, 1 is fixed to the support member 3, the leaf spring 4 having a groove 41, the conductive rotation member 5 having an end portion detachably attached to the bearing 31 and having a convex portion 52 that can be fitted to and removed from the groove 41, An auxiliary anode 6 fixed to the rotating member 5; and a conductive second support member 9 attached to the cathode 7 and detachably supporting an object 8 having a recess 81, and the protrusion 52 has The auxiliary anode 6 is arranged at a position facing the recess 81 when fitted in the groove 41. An insulating member 10 is fixed between the anode 2 and the cathode 7 by a fastener 11 so that the anode 2 and the cathode 7 are insulated. A part of the anode 2 and the cathode 7 is illustrated, and has a frame structure. Hereinafter, the first embodiment will be described with reference to the drawings mainly for each component.

  The anode 2 is connected to the anode power supply side (not shown), and a part thereof is shown in FIGS. 1 and 2, but it is a frame-shaped structure (not shown). Arranged in the Z direction, a plurality of electrode jigs 1 are fixed via first support members 3.

  The first support member 3 is a U-shaped plate made of titanium, and is disposed on the XY plane and provided with a pair of bearings 31 having through holes on the side surface. The side far from the anode 2 is an opening surface.

  The leaf spring 4 is a U-shaped plate material made of titanium, is disposed on the YZ plane, has an open end facing downward, and is elastically deformable on the YZ plane. A groove 41 is provided at the end of the leaf spring 4, and the groove 41 is engaged with the convex portion 52 in the standing state of FIG. The base portion of the leaf spring 4 is fixed to the anode 2 through the through hole 42 and by the fastening tool through the center portion of the first support member 3.

  The rotating member 5 is a plate made of titanium, the longitudinal direction is arranged in the X direction, and in the standing state of the auxiliary anode 6 in FIG. 1, the titanium convex portion 52 is more positive than the fixed position of the auxiliary anode 6. It is fixed at the position of the plate material close to 2. The convex portion 52 is a bar material, for example, a round bar, and is fixed to the side surface of the plate material by a welded portion 53 on the side end surface of the rotating member 5 on the side close to the anode in the X direction. The end portion 51 is an end portion in the X-axis direction of the rotating member 5 and is a narrow projecting portion in which both sides thereof are cut out. In FIG. 1 and FIG. 2, the end 51 is rotatably fitted to the bearing 31. When the first support member 3 is expanded in the X direction, the integral rotation member 5 and auxiliary anode 6 can be detached from the first support member 3. In order to ensure the smooth operability of the convex portion 52 to the groove 41 as the rotation axis positioning portion, the groove 41 has a first curved surface that curves along the YZ plane, and the convex portion 52 is a round bar. The second curved surface is an outer surface that matches the first curved surface.

The auxiliary anode 6 is a bar-shaped, L-shaped plating support member for facilitating the plating of the concave portion 81, here it is on the XZ plane, is made of titanium, and the platinum electrode 61 is welded to the upper tip, so that the auxiliary of FIG. In the upright state of the anode 6, the upper portion stands upright so as to be orthogonal to the main surface of the rotating member, and the bottom portion is welded to the main surface of the rotating member 5 in the X direction. As shown in FIG. 3, the platinum electrode 61 is provided at a position facing the recess 81. In this case, the interval between the platinum electrode 61 and the recess 81 is set to an appropriate interval depending on the plating thickness, device performance, current, voltage, plating concentration, and the like. In the suspended state of the auxiliary anode 6 in FIG. 2, the platinum electrode 61 does not face the recess 81 and is positioned below the first support member 3.

  The cathode 7 is basically made of stainless steel, copper, or titanium, and is connected to the cathode power supply side (not shown). A part of the cathode 7 is taken out in FIGS. This is a structure (not shown), and the illustrated part is arranged in the Z direction, and a plurality of electrode jigs 1 are fixed via second support members 9.

  The object to be plated 8 is a product made of a synthetic resin before plating. Here, the object to be plated 8 is a rectangular plate-like member arranged in the X direction, provided with a triangular recess 81 in the center, and in the Y direction on both sides. A pair of through holes 82 is provided. The workpiece 8 has a front surface, a back surface, and an end surface, and the surface is a plating effective surface.

  The second support member 9 is a U-shaped titanium plate, which can be elastically deformed so as to expand or contract in the X direction, and is in contact with the cathode 7 at the base end. A pair of claws 91 that expand outward is provided at the tip of the second support member 9. Each of the claws 91 is locked in the through hole 82, and the side surface of the second support member 9 is opened by the elastic force that opens. Contact with the plating 8. When the side surface of the second support member 9 is pushed in from the outside and is elastically deformed so as to shrink inward, the above-mentioned locking is released, and the workpiece 8 can be removed from the second support member 9.

  The first support member 3 is provided with a stopper 32 in the Y direction, and the excessive rotation of the rotating member 5 is prevented beyond an appropriate position.

  Next, auxiliary anodes 106 and 206 according to modified embodiments of the present invention will be described with reference to FIG. FIG. 11A shows an example in which the auxiliary anode 106 is bent at a plurality of locations. FIG. 11B shows an example in which the auxiliary anode 206 is curved.

  Next, leaf springs 104 and 204 according to modified embodiments of the present invention will be described with reference to FIG. FIG. 12A shows an example in which the leaf spring 104 is curved. FIG. 12B shows an example in which the leaf spring 204 is bent in a triangular shape.

  Next, the plating method using the electrode jig 1 of the present embodiment is composed of the following steps (1) to (9), and (9) since there is a feature in the replacement step, this part will be mainly described. . In addition, (6) The kind of pre-processing and the plating process, the material of the to-be-plated object 8, etc. are not limited to the content demonstrated here, It can change suitably. Details will be described below.

(1) Assembly Step The conductive first support member 3 having the bearing 31 is attached to the anode 2, and the leaf spring 4 having the groove 41 is fixed to the first support member 3. The second support member 9 is assembled to the cathode 7. The end of the conductive rotating member 5 to which the auxiliary anode 6 is fixed is attached to the bearing 31. The rotating member 5 and the auxiliary anode 6 are rotated counterclockwise in the YZ plane, and the convex portion 52 is fitted into the groove 41 by the elastic deformation of the leaf spring 4 so that the auxiliary anode 6 faces the concave portion 81. Place in position. Many auxiliary anodes 6 may be attached. Usually, a plurality of the members are attached to the front and back surfaces of the anode 2 and the cathode 7 at a plurality of locations.
(2) Mounting process As shown in FIG. 13, the electrode jig 1 is mounted on a moving device, for example, a hanger conveyor HC, suspended, and circulated through the illustrated steps.
(3) Pretreatment and plating step As shown in FIG. 13, an electroless plating step for imparting conductivity by forming a conductive film on an object to be plated 8 made of a synthetic resin having a recess 81 by a pretreatment bath 400. A metal having various functions on a conductive film, including a pretreatment process including a copper plating process using a copper plating tank 500, a nickel plating process using a nickel plating tank 600, and a chromium plating process using a chromium plating tank 700 A plurality of electroplating steps of laminating the coating. The electrode jig 1 is hooked on the hanger conveyor HC and conveyed, and the work of immersing and lifting the object to be plated in the plating tank is repeated.
(4) Replacement Step In the object replacement area 800, the rotating member 5 and the auxiliary anode 6 are rotated clockwise in the YZ plane from the position shown in FIG. The auxiliary anode 6 is removed from the position facing the recess 81 by being separated by elastic deformation, and the position shown in FIG. The object 8 to be plated is removed from the second support member 9, and another object to be plated is attached to the second support member 9. The rotating member 5 and the auxiliary anode 6 are rotated counterclockwise in the YZ plane, and the convex portion 52 is fitted into the groove 41 by the elastic deformation of the leaf spring 4 so that the auxiliary anode 6 faces the concave portion 81. Place in position. The electrode jig 1 is sent to the pretreatment process. The above process cycle is repeated.

  Since the details of the pretreatment process and the subsequent electrolytic plating process are described in Patent Document 1, refer to the contents thereof.

  Since the auxiliary anode 6 of the electrode jig 1 according to the embodiment of the present invention is a detachable one-touch type and has a rotating structure, the following effects can be obtained.

  (1) The replacement of the object to be plated 8 is performed only by rotating the rotating member 5 and the auxiliary anode 6 clockwise or counterclockwise and detaching the convex portion 52 from the groove 41. The alignment work of the auxiliary anode 6 is simple and the working time can be greatly shortened.

  (2) For the workpiece 8 having a different shape, it is only necessary to replace the rotating member 5 with the auxiliary anode 6 having a different shape, and the storage space can be saved.

  (3) It is possible to prevent the auxiliary anode 6 from damaging the workpiece 8 when the workpiece 8 is exchanged.

  (4) Since the leaf spring 4 has a bent shape, the action of the spring is softened, the resistance of fitting / removal of the convex portion 52 to the groove 41 is reduced, and workability is improved.

  (5) Even if the concave portion 81 of the workpiece 8 is arranged at any angle or position including horizontal and vertical, it can flexibly cope with it.

  (6) Even if the workpiece 8 is replaced, the distance between the recess 81 and the auxiliary anode 6 is kept constant, so that the uniformity of the plating thickness is maintained.

  (7) When the shape of the object to be plated 8 is different, the rotating member 5 and the auxiliary anode 6 may be replaced with different ones.

  Although the present embodiment has been described above as an example of the present invention, it is obvious that the configuration of the present invention can be variously modified, replaced, added, and the like without departing from the technical idea of the present invention. Further, replacement, addition and the like belong to the technical scope of the present invention.

  It is applied to an electrode jig having an auxiliary anode and has a great industrial utility value.

DESCRIPTION OF SYMBOLS 1 ... Electrode jig 2 ... Anode 3 ... 1st support member 31 ... Bearing 32 ... Stopper 4 ... Leaf spring 41 ... Groove 42 ... Through-hole 5 ... Rotating member 51 ... end 52 ... convex 53 ... weld 6 ... auxiliary anode 61 ... platinum electrode 7 ... cathode 8 ... object to be plated 81 ... concave 82 ... Through hole 9 ... Second support member 10 ... Insulating member 11 ... Fastener HC ... Hanger conveyor 400 ... Pretreatment tank 500 ... Copper plating tank 600 ... Nickel plating tank 700 ... Chrome plating tank

Claims (3)

A conductive first support member having a bearing attached to the anode;
A leaf spring fixed to the first support member and having a groove;
An electrically conductive rotating member having an end portion detachably attached to the bearing and having a convex portion detachable from the groove;
An auxiliary anode fixed to the rotating member;
A conductive second support member attached to the cathode and detachably supporting an object to be plated having a recess;
With
When the convex portion is fitted into the groove, the auxiliary anode is arranged at a position facing the concave portion, and when the convex portion is not fitted into the groove, the auxiliary anode is arranged at a position not opposed to the concave portion. It is the electrode jig, wherein Rukoto.   The electrode jig according to claim 1, wherein the rotating member is a plate material, and the convex portion is fixed at a position of the plate material closer to the anode than the fixing position of the auxiliary anode. A plating method for plating an object to be plated having a recess using an electrode jig having an anode and a cathode includes the following steps.
(1) Assembly process A conductive first support member having a bearing is attached to the anode, a leaf spring having a groove is fixed to the first support member, a conductive second support member is assembled to the cathode, and the auxiliary anode is fixed. The end of the conductive rotating member is attached to the bearing, the object to be plated having a recess is attached to the second support member, the rotating member and the auxiliary anode are rotated in a predetermined direction, and the convex portion is formed in the groove. The auxiliary anode is arranged at a position facing the concave portion by fitting by elastic deformation of the spring.
(2) is attached to the mobile device mounting process electrodes 冶 tool, is suspended,
(3) Plating process The electrode jig 1 is transported by a moving device, the work to be plated is immersed in the plating tank, and the work is pulled up.
(4) Replacement step The rotating member and the auxiliary anode are rotated in the direction opposite to the predetermined direction, and the convex portion is removed from the groove by elastic deformation of the leaf spring, thereby removing the auxiliary anode from the position facing the concave portion, The auxiliary anode is disposed at a position not facing the recess, the plated object to be plated is removed from the second support member, another plated object to be plated is attached to the second support member, By rotating the auxiliary anode in a predetermined direction and fitting the convex portion into the groove by elastic deformation of the leaf spring, the auxiliary anode is disposed at a position facing the concave portion.
A plating method characterized by comprising:

Images