JP2018016870A - Rotary plating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary plating device conducting electroplating by impregnating a workpiece into a plating liquid and capable of plating treatment on the workpiece without unevenness.SOLUTION: There is provided a rotary plating device conducting electroplating by impregnating a workpiece into a plating liquid, having a holding part 28 for holding the workpiece detachably, and a rotation derive device 2 for rotating the workpiece at a state that the workpiece is impregnated into the plating liquid always or periodically, the holding part 28 has a structure for holding the workpiece at a state that the workpiece is positioned around an axis of a rotation axis by the rotation derive device 2.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a rotary plating apparatus that performs plating while rotating a workpiece in a plating tank.

  As a plating apparatus that performs plating on a workpiece, the workpiece can be kept stationary while immersed in a plating tank in which a plating solution is stored with the workpiece as a cathode, and a metal film is electrolytically deposited on the surface of the workpiece by applying a voltage. What can be made is conventionally known, and a corrosion-resistant metal layer can be formed on the workpiece, a grindstone can be electrodeposited on the workpiece, or an electrode portion can be formed on the electronic component.

  In addition, as a kind of the above plating apparatus, a work supported to be hung on a rotating shaft is immersed in a plating solution in the plating tank, and the rotating shaft is swung in the plating tank while rotating the work around the rotating shaft. Conventionally, a rotary plating apparatus shown in Patent Document 1 that makes a plating layer applied to a workpiece uniform is known.

Japanese Patent Laid-Open No. 5-77168

  According to the above document, since the angle of the surface to be plated can be sequentially changed by rotating the workpiece, the unevenness of the plating thickness formed on the surface of the workpiece can be reduced. Is to rotate a single workpiece supported so as to be suspended from the rotation axis around the rotation axis in the plating tank, so that the surface to be plated of the workpiece is far from the position close to the rotation axis. There is a large difference in the range of movement in the plating tank, and there is a problem in that uniform plating may not be sufficient.

  It is an object of the present invention to provide a rotary plating apparatus capable of plating a work without unevenness in a rotary plating apparatus that performs electroplating by immersing a workpiece in a plating solution.

  In order to solve the above-mentioned problems, the present invention is a rotary plating apparatus that performs electroplating by immersing a workpiece in a plating solution. The holding portion 28 detachably holds the workpiece, and the workpiece is always or A rotation drive device 2 that rotates the workpiece in a state where it is periodically immersed in a plating solution, and the holding portion 28 is in a state where the workpiece is positioned around the axis of the rotation axis of the rotation drive device 2. It has a structure for holding the workpiece.

  Secondly, a support rod 27 that is driven to rotate about the axis of the rotation shaft by the rotation driving device 2 along the rotation shaft is provided, and the holding portion 28 is provided integrally with the support rod 27. It is characterized by.

  Thirdly, the holding portion 28 is characterized in that it protrudes radially from the support rod 27.

  Fourth, the support rod 27 is detachably provided.

  Fifth, a plurality of the holding portions 28 are provided side by side in the axial direction of the support rod 27.

  Sixth, a plurality of the support rods 27 are provided around the rotation axis.

  Seventh, the holding portion 28 has a structure for holding the work with a backlash so that a contact portion with the work is changed at least partially during the rotation of the work. It is said.

  Eighth, an application device that applies a voltage, and a connection circuit 4 that electrically connects the cathode of the application device and the holding unit 28, and the holding unit 28 connects the workpiece to the cathode of the application device. It is characterized by being configured to hold in an electrically connected state.

  Ninth, at least a part of the connection circuit 4 is formed on the rotating shaft.

  According to the above configuration, the work rotated while being immersed in the plating solution by the rotary drive device is positioned not on the rotary shaft of the rotary drive device but around the axis of the rotary shaft, so that the entire workpiece is plated. Since the plate moves so as to draw a large circular orbit around the rotation axis, the plating applied to the workpiece can be formed more uniformly.

  According to another aspect of the present invention, there is provided a support rod that is driven along the rotation axis and about the axis of the rotation shaft by the rotation driving device, and the holding portion is provided integrally with the support rod. The work of attaching and detaching the workpiece to the part can be made smoother.

  In addition, according to the holding portion formed so as to protrude radially from the support rod, a space for holding the workpiece can be easily secured, and the entire workpiece held by the holding portion can be more easily contained in the plating solution. Since it moves on a large circular locus, uneven plating becomes more difficult.

  In addition, according to what provided the said support rod so that attachment or detachment was possible, it was comprised so that various types of workpiece | work could be hold | maintained by changing only a support rod while it became easy to attach or detach the workpiece | work to the rotation drive device side. Therefore, the cost can be kept low.

  Moreover, according to what provided the said holding part in multiple numbers in the axial direction of the said support rod, many workpiece | work can be plated at once.

  Moreover, according to what provided the said support rod in multiple numbers around the axis | shaft of the said rotating shaft, while being able to perform the plating process of more workpiece | work at once, it can be formed by providing a corresponding support rod separately. Different workpieces can be plated at a time.

  In addition, according to the holding portion having a structure that holds the work in a state of having a backlash so that the contact portion with the work is changed at least partially during the rotation of the work, Plating treatment can also be performed at locations where the holding portion and the workpiece come into contact.

  And an application device that applies a voltage, and a connection circuit that electrically connects a cathode of the application device and a holding unit, and the holding unit electrically connects the workpiece to the cathode of the application device. According to what was comprised in the state hold | maintained, it can apply also to a workpiece | work automatically by hold | maintaining a workpiece | work to the said holding | maintenance part.

  In addition, according to the structure in which at least a part of the connection circuit is formed on the rotation shaft, the configuration around the rotation shaft and a part of the connection circuit can be used together. The cost can be reduced by reducing it, and the structure can be made more compact.

It is a front view which shows the rotary plating apparatus to which this invention is applied. It is AA sectional drawing of a rotary plating apparatus. (A) And (B) is the top view and front view which showed the holding | maintenance part. It is principal part sectional drawing which showed the structure of the wiring mechanism. It is an assembly drawing which showed the structure of the wiring mechanism. It is the principal part side view which showed the structure of the rotation support part.

  FIG. 1 is a front view showing a rotary plating apparatus to which the present invention is applied, FIG. 2 is a cross-sectional view taken along line AA of the rotary plating apparatus, and FIGS. 3A and 3B show a holding portion. It is a plan view and a front view. The illustrated rotary plating apparatus includes a support 3 on which a workpiece (to-be-plated) W to be plated is mounted and supported, a rotary drive device 2 that rotates the support 3, and supports the rotary drive device 2. And a conductive mechanism (connection circuit) 4 for applying a voltage to the workpiece W supported by the support 3 from the frame body 1 side, while rotating the workpiece W in the plating solution. It is comprised so that a plating process can be performed.

  The frame 1 includes a pair of left and right side plates 6, 6 extending in the vertical direction, an upper connecting rod 7 that connects upper end sides of a pair of side plates 6, 6 that are opposed to each other, and a pair of side plates 6, 6. 6 is composed of a pair of front and rear lower connecting rods 8 and 8 for connecting the lower end sides of the base plate 6 and an upper support plate 9 spanned on the upper side of the pair of side plates 6 and 6, each member being a resin material It consists of In addition, as long as each member which comprises the frame 1 is a member without electroconductivity, another member may be sufficient.

  The rotational driving device 2 includes rotational support portions 11 and 11 that are rotatably supported on opposing surfaces of a pair of opposed side plates 6 and 6, and a gear transmission that transmits rotational power to the rotational support portion 11. A mechanism 12 and a motor 13 mounted on the upper support plate 9 are provided, and the rotation support portion 11 can be rotationally driven in the plating solution by a driving force output from the motor 13. Yes. Each configuration will be described below.

  The motor 13 is mounted and fixed on the upper support plate 9, and adjusts the output gear 14 that outputs power to the gear transmission mechanism 12 and the driving force (rotational speed) output from the output gear 14. The operation unit 16 is provided, and is supported and fixed on the upper surface side of the upper support plate 9 at a position close to the left and right sides (left side in the illustrated example) of the side plate 6 (see FIG. 1).

  The motor 13 is configured such that the rotation speed can be freely adjusted by the operation tool 16, and the rotation driving device is adapted to the shape / type of the workpiece W to be plated, the concentration of the plating solution, and the like. The rotation speed can be adjusted and changed. In the example shown in the figure, a DC motor is used, but the type of motor is not limited as long as the rotational speed can be arbitrarily adjusted.

  The gear transmission mechanism 12 is provided on the inner surface side of the side plate 6 on one of the left and right sides (left side in the illustrated example) where the motor 13 is disposed, and extends in the vertical direction along the side plate 6. A plate-like gear support plate 17, a first transmission gear 18 to which power from the output shaft 14 of the motor 13 is transmitted, and a second transmission to which power transmitted from the first transmission gear 18 is transmitted. The gear 19 and a third transmission gear 21 that transmits the power transmitted from the second transmission gear 19 to the rotation support portion 11 side are configured. The transmission gears 18, 19, 21 are provided on the side plate 6. It is supported by the gear support plate 17 on the inner surface side so as to be rotationally driven. That is, the transmission gears 18, 19, and 21 are arranged side by side in the vertical direction so that the driving force can be transmitted from the output gear 14 side of the motor 13 to the rotation support portion 11 side below the side plate 6 (FIG. 1). And FIG. 2).

  The rotation support portion 11 includes a disk-shaped rotating body 22 to which power transmitted from the gear transmission mechanism 12 (third transmission gear 21) is transmitted, and the rotating body 22 is rotatable to the side plate 6 side. The shaft portion 24 is pivotally supported, and the mounting portion 23 is provided on the rotating body 22 side and is configured to be detachable from the support body 3. The rotation support portions 11 are provided on the lower sides of the pair of side plates 6 and 6, respectively, and are arranged so that the pair of rotation support portions 11 face each other (see FIG. 1).

  A plurality (8 in the illustrated example) of the mounting portions 23 are provided on the peripheral surface of the cylindrical sealing cover 26 disposed on the inner surface center side of the rotating body 22. It arrange | positions at equal intervals along the outer periphery (circular locus | trajectory) of the cover 26 (refer FIG. 2). That is, the attachment portion 23 is disposed at a position separated from the axis of the rotation axis of the shaft portion 24 by a predetermined radius, and each attachment portion 23 is in the vertical and longitudinal directions with the rotation axis of the shaft portion 24 as the axis. It is configured to move circularly.

  The mounting portion 23 is bent in an L shape so that the mounting surface to which the support 3 is mounted is parallel to the rotation axis, and the bolt 3 is attached to the mounting surface so that the end of the support 3 can be attached and detached. A fixing hole 23a that can be fixed is formed.

  Further, the pair of left and right rotation support portions 11, 11 provided on the side plates 6, 6 are attached to the attachment portions 23, 23 of the left and right rotation support portions 11 on both ends of the support body 3 extending in the left-right direction. By being fixed, it is configured to rotate integrally. That is, the rotation support portions 11 and 11 on the left and right other sides are driven by rotating the rotation support portion 11 (rotating body 22) on the left and right sides (left side in the illustrated example) by the driving force output from the motor 13. Can also be rotated together.

  The support 3 is formed on both ends of the support rod 27, a support rod 27 extending in the left-right direction, a holding portion 28 for holding the workpiece W provided in the middle portion of the support rod 27, and the support rod 27. And a plurality of bolts (eight in the illustrated example) are detachable on the left and right rotation support portions 11 (mounting portions 23) side. (See FIG. 3).

  In the example shown in the figure, the holding part 28 is composed of four holding pieces 29 that respectively lock the corners of the rectangular plate-like workpiece W, and a plurality of holding parts 28 (5 in the example shown in the figure) are arranged in the longitudinal direction of the support rod 27. A plurality of workpieces W are provided side by side so as to be detachably held.

  More specifically, the holding piece 29 is formed with a ring portion 30 through which a corner portion of the rectangular workpiece W is inserted at the tip end side, and is arranged in the extending direction of the support rod 27 to form the ring portion 30. A pair of first holding pieces 29A and 29A, which are arranged so as to face each other, and a pair of second holding pieces 29B which are formed so as to protrude from the orthogonal direction of the support rod 27 and so that the ring portion 30 faces each other. 29B. Thereby, it can hold | maintain so that the four corners of the square-shaped workpiece W may be pinched | interposed by the ring part 30 of each holding piece toward the center.

  Further, the holding portion 28 is provided in a direction that protrudes radially from the axis of the rotation shaft of the rotation support portion 11 (rotation plate 22) when the support rod 27 is attached to the attachment portion 23 side. (See FIG. 2). For this reason, the work which can be attached to the rotary plating apparatus is a peripheral surface of a rotary body configured in a columnar shape by a pair of left and right rotary drive bodies 11 and 11 and a support body 3 (support rod 27) provided therebetween. (A total of 40 in the illustrated example) are arranged.

  As a result, the work W to be attached / detached by the holding part 28 can be arranged more efficiently in space, and the work W can be rotated and moved more greatly in the plating solution around the rotation axis of the rotation support part 11. Therefore, there is no unevenness in the plating process conditions for each workpiece W, and a more uniform plating process can be performed.

  In addition, the holding portion 28 (holding piece 29) is made of a slightly elastic member, and the work W can be easily attached and detached by bending the holding pieces 29 facing each other.

  Further, the holding portion 28 (holding piece 29) is configured to hold the workpiece W in a state of having a backlash. In other words, the work W held by the holding portion 28 is configured to be allowed to move slightly up and down, front and rear, left and right in the ring portion 30 while being held.

  According to this configuration, when the workpiece W held by the holding portion 28 is rotationally driven around the shaft portion 24 of the rotation support portion 11, the four corners of the workpiece W and the holding pieces 29 (ring portions 30) Since the contact location is changed as needed according to the rotational position, the entire surface of the workpiece W can be plated.

  Incidentally, the holding portion 28 is not limited to the one constituted by the holding piece 29 having the illustrated shape. For example, a holding clip (not shown) that always holds the work W at one place or a plurality of places, a cage-like holding hook (not shown), or a lock that locks into a hole or groove formed in the work It may be a piece or the like, as long as the workpiece W to be plated is configured to be detachable.

  That is, when the shape of the workpiece W to be plated is changed, only the support 3 that can be detached from the rotation support portion 11 is changed to the support 3 that can hold the workpiece W having the changed shape. Therefore, it is not necessary to change the entire rotary plating apparatus, and it is possible to perform the plating process on the workpiece W having various shapes at a lower cost.

  The conductive mechanism 4 is arranged on the outer surface upper side of the side plate 6 (in the vicinity of the upper support plate), and is formed of a conductive member (a copper plate, an iron plate, etc.) extending in the front-rear direction of the side plate. First conductive members 32, 32, a second conductive member 33 extending in the vertical direction along the side plate 6 from the first conductive member to the shaft portion 24 side of the rotation support portion 11, A wiring mechanism for wiring the voltage conducted to the second conductive member 33 to each attachment portion 23 side, and electrically connecting a cathode side of an application device (not shown) to the first conductive member 32 side; Thus, a voltage can be applied to the workpiece W supported on the support 3 side (see FIGS. 1 and 2).

  The wiring mechanism 24 will be specifically described. The voltage conducted to the end portion side of the second conductive member 33 extending to the shaft portion 24 side of the rotation support portion 11 is transferred to the shaft portion 24 of the rotation support portion 11. In FIG. 8, the shafts 24 are wired so as to be able to conduct to a plurality of mounting portions 23 (eight in the illustrated example) arranged radially with the shaft portion 24 as an axis. The detailed configuration of the wiring mechanism 34 will be described later.

  The second conductive member 33 is covered by a cover body 36 provided on the left and right outer surfaces of the side plate 6, and the wiring mechanism 34 is configured to be sealed in the rotation support portion 11. Therefore, it is possible to prevent the second conductive member 33 disposed in the plating solution and the wiring mechanism 34 from being plated during the plating process. The cover body 36 is bolted to the side plate 6 side by a mounting hole 36a drilled on the lower end side (see FIG. 4).

  Incidentally, as for the said support part 3, the volt | bolt fixing | fixed part 31, the support rod 27, and the holding | maintenance part 28 are comprised by the member with electroconductivity. At this time, the outer peripheral surface side of the support rod 27 and the holding portion 28 may be covered with an insulating cover made of an insulator. Thereby, it can prevent more efficiently than parts other than the workpiece | work W to be plated are plated in a plating solution.

  According to this configuration, in performing the plating process, the second conductive member 33 is applied by applying a voltage to the first conductive member 32 extending in the front-rear direction above the liquid surface of the plating solution by the application device. A voltage can be applied to the workpiece W supported on the support 3 side via the wiring mechanism 34.

  Next, a specific configuration of the wiring mechanism will be described with reference to FIGS. 4 is a cross-sectional view of the main part showing the configuration of the wiring mechanism, FIG. 5 is an assembly view showing the configuration of the wiring mechanism, and FIG. 6 is a side view of the main part showing the configuration of the rotation support unit. It is.

  The wiring mechanism 34 includes a cylindrical sliding sleeve 41 that is bolt-connected to the lower end side of the second conductive member 33, and a connecting member 42 that is inserted into the inner peripheral surface side of the sliding sleeve 41 so as to be axially rotatable. A connection bolt 43 inserted into the connection member 42 and connected to the shaft (side plate) side and the fastening member 50 on the rotating body (rotation support) side, the end side of the connection member 42 and the It is composed of a disk-shaped connection plate 44 that conducts electricity between the attachment portion 23 side, and the attachment portion 23 that is positioned so as to be sandwiched between the connection plate 44 and the rotating body 22.

  The wiring mechanism 34 is attached to the center of the rotating body 22 to rotate integrally therewith, a cylindrical bearing-side sleeve 47 fitted to the bearing member 46, and the side plate 6 side. A side plate side shaft portion 48 that is integrally formed with the fixed cover body 36 and that the bearing member 46 is fitted to be axially rotatable, a cap portion 49 that seals the cover body 36, and the sealing cover 26. The rotation support portion 11 (the shaft portion 24 and the rotating body 22) is sealed inside.

  The connecting member 42 is formed so that the shape of the outer peripheral surface is different between the side plate 6 side and the rotating body 22 side. Specifically, the base end side of the connecting member 42 is formed so as to be inserted into the inner peripheral surface side of the sliding sleeve 41 so as to be axially rotatable by a sliding portion 42a having a cylindrical cross section. The distal end side of the connecting member 42 has a rectangular shape drilled in the shaft center of the connecting plate 44 and the shaft center of the bearing member 46 (the rotating body 22) by a connecting portion 42b having a rectangular parallelepiped cross section. Are formed so as to be insertable into the connecting holes 44a and 46a.

  As a result, the connecting member 42 is configured such that the connecting portion 42 b side rotates integrally with the rotating plate 22 that rotates by the power transmitted from the gear transmission mechanism 12. The shaft is configured to rotate accordingly. At this time, when the connecting member 42 is axially rotated, the sliding portion 42a slides on the inner peripheral surface side of the sliding sleeve 41 fixed to the side plate side shaft portion 48 (is idle in a contact state). It is configured as follows.

  That is, the inner peripheral surface side of the sliding sleeve 41 that is directly connected and fixed to the second conductive member 33 by the connecting member 42 (the sliding portion 42 a and the connecting portion 42 b) having the structure, and the shaft portion 24. A connecting plate 44 that rotates about the axis of rotation and is connected to each mounting portion 23 so as to be conductive is connected in a conductive state.

  As shown in FIGS. 4 to 6, the connecting plate 44 is formed with a groove 44 a into which each mounting portion 23 is fitted (positioned) on the outer peripheral surface side, and is bent in an L shape. Concave portions 23b that are alternately fitted with the groove portions 44a on the connection plate 44 side are also formed on the attachment portion 23 side, so that the attachment location of the attachment portion 23 arranged on the circumference of the connection plate 44 can be positioned smoothly. It is configured as follows. In addition, it is comprised so that the thickness of the overlap | superposed location may become the same as the thickness of the connection board 44 by inserting the recessed part 23b in this groove part 44a (refer FIG. 4).

  At this time, on the side of the rotating body 22 to which the connection plate 44 and the attachment portion 23 are attached, a recess that accommodates the head portion of the fixing screw that connects the groove portion 44 on the connection plate 44 side and the recess portion 23 on the attachment portion 23 side is accommodated. The installation portion 22a is recessed, and the position on the rotating body 22 where the attachment portion 23 is disposed can be easily positioned.

  Since the connection plate 44 and the attachment portion 23 attached to the rotating body 22 side as described above are made of a conductive member, the sealing cover 26 formed of an insulator is connected to the fixing bolt 55 and the connection. By using the fastening body 50 that is fastened together with the bolt 43, the conductor plate is configured not to be exposed in the plating solution by covering and fixing the connection plate 44 to the rotating body 22 side.

  In addition, the mounting portion 23 is provided with an insulating cover 23c on the surface opposite to the surface on which the support 3 is mounted at the portion formed in an L shape where the bolt fixing portion 31 is formed. Only the hermetic cover 26 covers a portion that cannot cover the exposure of the conductive portion.

  Further, as shown in FIG. 4, the mounting portion 23 is formed from a gap generated between the rotating body 22 and the end portion side of the support portion 3 (support rod 27) after the support body 3 is bolted. When a part of the attachment portion 23 is exposed, the attachment portion 23 (conductive portion) can be more reliably prevented from being exposed to the plating solution by filling the gap with a filling member 60 such as a putty. . With the above configuration, the connection plate 44 and the attachment portion 23 that are conductive members attached to the rotating body 22 side can be sealed so as not to be exposed to the plating solution.

  The bearing member 46 is configured to rotate integrally with the rotating body 22 by being fitted on the axial center side of the rotating body 22. Further, on the shaft center side of the bearing member 46, a rectangular connecting hole 46a into which the connecting portion 42b of the connecting member 42 is fitted and inserted, and an outer peripheral surface of the sliding sleeve 41 fixed on the side plate 6 side. An inner recess 46b that is slidably accommodated on the side, and an outer recess that is slidably accommodated on the outer side of the inner recess 46b in a ring shape and fixed on the side plate 6 side. 46c is recessed.

  Further, the bearing member 46 is provided with a bearing (bearing) 45 that smoothly rotates around the side plate side shaft portion 48 on the inner peripheral surface side of the outer concave portion 46c, and on the outer peripheral surface side of the outer concave portion 46c, The cylindrical sleeve 47 on the bearing side is provided. Thereby, it is comprised so that the rotary body 22 (bearing member 46) may be connected with the side plate side axial part 48 protruded from the side plate 6 side in the state which can be rotationally driven smoothly.

  The side plate side shaft portion 48 is provided on the lower end side of the cover body 36 that covers the second conductive member 33, and has a cylindrical shaft portion 48 a that protrudes toward the rotation support body 11, and the slide. An insertion hole 48b inserted and fixed in a state where the sleeve 41 does not rotate, an exposed portion 48c for fixing the sliding sleeve positioned in the insertion hole 48b and the lower end portion of the second conductive member 33 with bolts, The cap part 49 is configured to open and close the exposed part 48c.

  As described above, according to the conductive mechanism 4 described above, the application device → the first conductive member 32 → the second conductive member → the wiring mechanism 24 (sliding sleeve 41 → connecting member 42 → connecting plate 44 → mounting portion 23) → supporting portion. 3 (support rod 27 → holding piece 29), the voltage applied by the application device can be conducted to the workpiece W held by the holding unit 28. The member may be formed of any material as long as it has conductivity.

  In addition to the members constituting the conductive mechanism 4, it is configured using a resinous member having no electrical conductivity, etc., and each member constituting the conductive mechanism 4 includes the cover body 36, the side plate side The shaft 48, the bearing member 46, the rotating body 22, the sealing cover 26, the insulating cover 23 c, the fastening body 50, the putty 60, etc., do not touch the plating solution when immersed in the plating solution during the plating process. By covering the conductive portion, the conductive mechanism 4 is configured not to be plated.

2 Rotation drive device 4 Wiring mechanism (connection circuit)
27 Support rod 28 Holding part

Claims (9)

A rotary plating apparatus that performs electroplating by immersing a workpiece in a plating solution,
A holding part (28) for holding the workpiece detachably;
A rotation drive device (2) for rotating the workpiece in a state where the workpiece is constantly or periodically immersed in the plating solution,
The rotary plating apparatus characterized in that the holding portion (28) has a structure for holding the work in a state where the work is positioned around an axis of a rotation shaft by the rotary drive device (2). A support rod (27) that is driven to rotate along the rotation axis and about the axis of the rotation axis by the rotation drive device (2);
The rotary plating apparatus according to claim 1, wherein the holding portion (28) is provided integrally with the support rod (27). The rotary plating apparatus according to claim 2, wherein the holding portion (28) is formed to project radially from the support rod (27). The rotary plating apparatus according to claim 2, wherein the support rod (27) is detachably provided. The rotary plating apparatus according to any one of claims 2 to 4, wherein a plurality of the holding portions (28) are provided side by side in the axial direction of the support rod (27). The rotation plating apparatus according to any one of claims 2 to 5, wherein a plurality of the support rods (27) are arranged around the rotation axis. The said holding | maintenance part (28) has a structure which hold | maintains this workpiece | work with the backlash so that a contact part with this workpiece | work may be changed at least partially during rotation of the said workpiece | work. The rotary plating apparatus according to any one of the above. An application device for applying a voltage;
A connection circuit (4) for electrically connecting the cathode of the application device and the holding section (28);
The rotary plating apparatus according to any one of claims 1 to 7, wherein the holding unit (28) is configured to hold the workpiece in a state of being electrically connected to a cathode of the application device. The rotary plating apparatus according to claim 8, wherein at least a part of the connection circuit (4) is formed on the rotary shaft.

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