JP2019073770A - Rotary barrel plating device and barrel plating method - Google Patents

Abstract

To provide a rotary barrel plating device and a barrel plating method in which a to-be-plated object can be prevented from sticking to a barrel inside wall and products can be prevented from remaining.SOLUTION: A rotary barrel plating device A comprises: a barrel 1 having a hollow cylindrical shape for accommodating a to-be-plated object inside and having liquid permeability; a supporting member 3 for supporting the barrel 1 rotatably in a horizontal state or an almost horizontal state; rotation driving means 4 for rotating the barrel 1; and a liquid-flow changing member 2, which is arranged in the upper side of the barrel 1 so that the lower side 2a gets close to the surface of the rotating barrel 1, comprising a plate-like member having the shape of the lower side 2a corresponding to the surface shape of the barrel 1 in the crosswise direction. A barrel plating method includes a plating process for applying an electroplating treatment or an electroless plating treatment to the to-be-plated object in the barrel 1 while creating a vortex in the barrel 1 changing a flow of plating solution by interrupting the flow of plating solution using the plate-like member in the vicinity of the upper-side surface of the barrel 1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rotary barrel apparatus for plating and a barrel plating method, and more particularly, to prevent sticking of a material to be plated to the inner wall of a barrel, regardless of the shape and size of the material to be plated. Rotary barrel apparatus and barrel plating method capable of

  Conventionally, when a plating process is performed on a large number of small articles, small parts, etc. as objects to be plated, a large number of objects to be plated are accommodated in a barrel, and the barrel is immersed in a plating solution in a plating tank. The plating process is performed on the surface of the object by electroplating and electroless plating, while rotating the barrel and moving the object in the barrel while moving the object, but when the barrel is rotating. There is a problem that the object to be plated adheres to the inner wall of the barrel.

Then, in order to prevent the sticking of such a thing to be plated, various proposals are made. Patent Document 1 has pyramidal projections (hereinafter referred to as "diacuts") on the inner wall of the barrel, the shortest distance D between the diamond cut apexes, the shortest distance E between the centers of the holes formed in the barrel, and the spherical shape. An object to be treated such as a flat shape is attached to the inner wall of the barrel during rotation by a barrel type electroplating method characterized in that the media diameter F satisfies the relationship of 2 ^1/2 · D <F and E <F. It has been proposed to prevent sticking. According to Patent Document 2, as a rotary barrel apparatus mainly used for plating small parts, in a barrel apparatus provided with a barrel rotatably supported on a pedestal and provided with a large number of liquid passing holes in a peripheral wall surface, the rotation A plurality of convex cams are arranged at intervals along the circumferential direction on the outer periphery of the barrel, and a striking member that repeats a state of striking against the rotating barrel and a state of being separated by the convex cams is a rack The rotary barrel apparatus characterized in that it is supported and vibrates the rotary barrel every time the striking member strikes the rotary barrel as the rotary barrel is rotated, and the vibration causes adhesion to occur. It has been proposed to peel the work to be removed back into a lump of work.

  Patent Document 3 discloses that an anodic plating solution is used to solve the problem that tiny parts floated up by the rotation of the plating barrel may stick to the inner surface of the plating barrel and not be separated from the inner surface of the plating barrel. A plating barrel which passes through and conducts a large number of extremely small parts introduced inside to the cathode, a first drive means for rotating the plating barrel in the circumferential direction, and a second for vibrating the plating barrel A barrel apparatus for plating a micro part, comprising: a driving means; and a suction means disposed at a lower part of the plating barrel for drawing the micro part together with the flow of the anodic plating solution. The steps of: throwing a large number of micro parts into a plating barrel having liquid properties; immersing the plating barrel in an anodic plating solution to make the micro parts into a cathode; And a step of: electroplating the minimal parts while suctioning the minimal parts downward with the liquid flow of the anodic plating solution and rotating and vibrating the plating barrel; and plating the minimal parts. A method has been proposed. In Patent Document 4, a polygonal tubular body, a pair of side wall portions provided on both sides of the body in the rotational axis direction, and a plurality of panel portions attached to the body are provided. The body portion has a frame portion that constitutes a polygonal corner portion, and a mesh portion that bridges between the corner portions, and the mesh portion has a porosity for restricting the flow of the object to be plated, The panel portion has a porous structure for the flow of the plating solution, and the frame portion and the mesh portion are configured as an integral molding, and the panel portion is a separate body from the frame portion, It has been proposed that the barrel plating barrel attached so as to cover the mesh portion eliminate the unevenness of the mesh and the hooking of the object to be plated on the joints between the meshes, and further, the inner surface of the trunk portion. At the intersection of the wall and the inner surface of the side wall By providing the built-up portion for preventing caught in Kki was caught effect of preventing the object to be plated are described that are further enhanced.

  In Patent Document 5, a cylindrical drum which is immersed in a plating solution in a horizontal state and accommodates an object to be plated, a support member which rotatably supports the drum, and a driving mechanism which rotationally drives the drum, And a rod-like conductive member disposed coaxially with the drum and rotating integrally with the drum. In the barrel plating apparatus, the inside of the drum is provided with a tapered portion inside the drum. Is described as being formed smoothly so that the object to be plated is difficult to catch. Patent Document 6 is a barrel type plating apparatus in which a large number of parts to be plated are put into a rotary barrel that becomes a container having a polygonal cross section, and the barrel is rotated to perform plating treatment while immersed in a plating solution. The inside of the container is provided with an agitating member for agitating the parts to be plated which has been introduced at the time of the plating treatment, wherein the agitating member is constituted by a rod having a circular or oval cross section. A barrel type plating apparatus characterized in that it is positioned at a designated position in a container and detachably supported, and the barrel container is described as a measure for enhancing the flowability and agitation of the work accompanying the rotation of the barrel It is described that an agitating plate for agitating the work is disposed in the inner circumferential area of the container at a distance from the wall surface of the container.

Japanese Patent Application Laid-Open No. 8-3791 JP-A-8-158099 Japanese Patent Application Publication No. 2001-192895 JP 2007-77448 A JP 2007-291446 A JP, 2014-118602, A

  However, in the above-described plating rotary barrel device, vibration is applied to the barrel, protrusions are disposed inside the barrel, suction is performed downward with the flow of the plating solution, and stirring is performed by the stirring member in the barrel. Depending on the type of the object to be plated, the shape, the type of the plated film, etc., there is a problem that there may be a problem in the finish of the product. Furthermore, in the above-described plating rotary barrel device, a relatively small thin flat object to be plated, for example, a flat plate having a thickness of 0.01 to 1 mm, a vertical width of 0.3 to 5 mm, and a horizontal width of 0.3 to 5 mm Even in the case of an object to be plated having a shape, there is still room for improvement in terms of preventing sticking (product remaining) of the object to be plated to the inner wall of the barrel, and the shape and size of the object to be plated Even if it is stuck on the inner wall of a barrel, development of the technique which can prevent that a product residue arises is desired.

  The present invention has been made in view of the above problems, and no matter what kind, shape, or size of the object to be plated, and what kind of plating film is, there is a problem in the finish of the product. It is an object of the present invention to provide a rotating barrel apparatus for plating and a barrel plating method capable of preventing sticking to the inner wall of the barrel without producing a product residue and preventing the formation of product residue.

  In order to achieve the above object, the present invention (1) has a hollow cylindrical shape that accommodates an object to be plated inside and has a liquid-permeable barrel, and the barrel can be turned horizontally or substantially in a rotatable state. A rotary barrel apparatus for plating, which comprises a support member supported in a horizontal state and rotational drive means for rotating a barrel, and immersing a barrel in a plating solution in a plating tank and plating the object while rotating it. And a liquid flow changing member disposed on the upper side of the barrel such that the lower side is in proximity to the surface of the rotating barrel and the lower side is a plate-like member having a lower side corresponding to the surface shape of the barrel in the width direction. And (2) a process of containing the object to be plated in a barrel having a hollow cylindrical shape having liquid permeability that does not allow the object to be plated to pass through; Is An immersion step of immersing the horizontally mounted barrel in a plating solution in a plating tank, and rotating the barrel in the plating tank to generate a flow of the plating solution and causing the liquid flow to be near the upper surface of the barrel And a plating process step of subjecting an object to be plated in the barrel to an electroplating process or an electroless plating process while changing the liquid flow by blocking with the plate-like member to create a vortex in the barrel. To provide a barrel plating method.

  According to the rotating barrel device for (1) plating of the present invention, a barrel having a hollow cylindrical shape that accommodates the object to be plated inside and a liquid-permeable barrel, and the barrel being rotatable horizontally or A rotary barrel device for plating, which comprises a support member for supporting in a substantially horizontal state, and a rotational drive means for rotating a barrel, and immersing the barrel in a plating solution in a plating tank and plating the object while rotating it. And consists of a plate-like member having a lower surface corresponding to the surface shape in the width direction of the barrel, in other words, the entire width of the barrel or a partial surface shape in the width direction, and the lower side approaches the rotating barrel surface Is provided at the upper side of the barrel, in other words, the flow changing member is provided along the width direction of the barrel so that the flow of the plating solution generated by the rotation of the barrel is outside the upper portion of the barrel flow Instead, the eddy is created in the barrel, to prevent sticking of the object to be plated to the inner wall of the barrel periphery close to the lower side of the liquid flow changing member, it is possible to prevent the product remaining. And since the fluid flow change member is provided above the barrel, it is possible to prevent, for example, the occurrence of a situation such as defective conduction due to the product fluttering.

  Here, if the fluid flow changing member is attached to the support member, the distance between the barrel surface and the lower side of the fluid flow changing member can be easily adjusted, which is more preferable. In addition, if the shortest distance between the barrel surface and the lower side of the flow change member is 1 to 30 mm, it is easy to adjust the flow so that an appropriate amount of plating solution flows into the barrel, which is more preferable. It is. The shortest distance between the barrel surface and the lower side of the flow change member is, for example, the distance between the barrel surface and the lower side of the flow change member if the barrel of the barrel is cylindrical. If the barrel is a polygonal cylinder, this is the distance between the surface of the barrel corner and the lower side of the fluid flow changing member when the barrel corner is positioned directly below the fluid flow changing member at the time of barrel rotation. Further, as described later, when the bottom surface of the liquid flow changing member is tapered, it is the separation distance from the lower side in the front view (the lower side of the lower side of the bottom surface, in other words, the lower end side). Furthermore, the fluid flow changing member is provided with a tapered bottom facing in the rotational direction of the barrel, in other words, the tapered portion in which the lower thickness portion of the fluid flow changing member faces in the rotational direction of the barrel This is more preferable because turbulence is less likely to occur. Further, the barrel is provided with tapered portions whose diameters are reduced toward the end on both sides in the width direction, and the flow change members respectively having the lower side shape corresponding to the surface shape of the tapered portion When arranged at the upper side, the object to be plated easily adheres to the inner wall at the tapered portion, and the object to be plated once adhered to the inner wall may not easily come off, but the liquid of the present invention The flow changing member changes the flow of the plating solution on the upper surface of the tapered portion of the rotating barrel, generating a vortex in the upper tapered portion and preventing the sticking as described above, which is more useful. It is.

  Then, when the barrel is detachably attached to the support member, when taking out the object to be plated (product), the barrel is removed from the support member, for example, by swinging the opening of the barrel downward. Since the material to be plated (product) in the barrel can be shaken off, the product residue can be prevented more effectively.

  According to the (2) barrel plating method of the present invention, the step of containing the object to be plated in a barrel having a hollow cylindrical shape having liquid permeability that does not allow the object to be plated to pass through; The immersing step of immersing the barrel mounted in a substantially horizontal state in the plating solution in the plating tank, and rotating the barrel in the plating tank to generate a liquid flow of the plating liquid, and the liquid flow on the upper side of the barrel A plating process for changing the liquid flow by blocking by a plate-like member in the vicinity of the surface to make the vortices in the barrel, ie, the vortices of the plating solution, perform electroplating or electroless plating on an object to be plated in the barrel Because the vortex of the plating solution acts on the inner wall of the barrel according to the rotational movement of the barrel, it prevents sticking to the inner wall of the object, and the object adheres to the inner wall. Attached As also, it is possible to peel off.

  Here, if the object to be plated has a flat plate shape with a thickness of 0.01 to 1 mm, a vertical width of 0.3 to 5 mm, and a horizontal width of 0.3 to 5 mm, such an extremely thin and minimally plated object In this case, it is easy to fly in the barrel and not only to stick to the inner wall, but also to control the passage of the material to be plated, such as the mesh portion, slit and small hole diameter provided to secure the liquid permeability of the barrel. If it is too small, the plating solution will not easily flow into the barrel, and it will be difficult to sufficiently prevent sticking to the inner wall of the material to be plated or to peel off the material to be plated stuck to the inner wall by rotating the barrel alone. Although it is easy, according to the plating method of the present invention, a flow of the plating solution is generated, and the flow of the plating solution is changed on the upper surface of the barrel to create a vortex in the barrel. Enough to prevent Since easily peeled off the object to be plated marked with, it is more useful. In addition, it is more preferable that the rotation speed of the barrel is 10 rpm or less, since it becomes easy to prevent the floating of the product due to the rotation of the barrel. When the rotary barrel device for plating (1) of the present invention is used as a rotary barrel device for plating, the liquid flow changing member becomes a plate-like member that blocks the liquid flow near the upper surface of the barrel, and realizes the above-described steps. Becomes easier.

  According to the present invention, no matter what kind, shape, or size of the object to be plated, and what kind of plating film, there is no problem in the finish of the product, and the inner wall of the barrel It becomes possible to prevent sticking to the product and to prevent the generation of product residue.

BRIEF DESCRIPTION OF THE DRAWINGS It is a partially broken schematic front view of the plating tank which arrange | positioned the rotation barrel apparatus for plating explaining the 1st structural example of the rotation barrel apparatus for plating of this invention. It is a schematic enlarged longitudinal cross-sectional view of the barrel which comprises the rotation barrel apparatus for plating of FIG. It is a schematic enlarged view of a part in FIG. It is a schematic expanded sectional view of the rotary barrel apparatus for plating in alignment with XX in FIG. It is a schematic diagram explaining the attachment or detachment method of the barrel and support member which comprise the said 1st structural example. It is a schematic sectional drawing of the rotation barrel apparatus for plating explaining the 2nd structural example of the rotation barrel apparatus for plating of this invention.

  Hereinafter, the present invention will be described in more detail with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals. FIG. 1 is a plan view of a plating tank provided with a rotary barrel apparatus for plating A according to a first embodiment of the present invention, for explaining the first configuration example of the rotary barrel apparatus for plating of the present invention. A partially broken schematic front view schematically showing the configuration of the rotary barrel device A. FIG. 2 is a schematic view for explaining the configuration of a barrel supported by a support member on which the liquid flow changing member of the plating rotary barrel device A is attached. FIG. 3 is a schematic enlarged view showing a portion a in FIG. 1 in an enlarged manner for explaining the positional relationship between the flow change member and the barrel of the plating rotary barrel apparatus A. FIG. In order to explain the positional relationship between the flow change member of the rotary barrel device for plating A and the barrel, the rotary barrel device for plating is longitudinally broken and enlarged along the line X-X in FIG. 5 is an enlarged schematic cross-sectional view of FIG. It is a schematic view illustrating the detachable mounting structure to a support member.

  The plating rotary barrel device A has a liquid-permeable barrel 1 having a hollow cylindrical shape that accommodates the object to be plated inside, and the width of the barrel 1 of the liquid flow change members 2 and 2 fixed. A support member 3 for rotatably supporting the barrel 1 horizontally or substantially horizontally so as to be close to the upper side of the tapered portions 1a, 1a on both sides in the direction direction, and rotation driving means 4 for rotating the barrel 1 While the barrel 1 attached to the support member 3 is immersed in the plating solution 6 in the plating tank 5 by a transport device (not shown) and is rotated, the plating object (not shown) is plated.

  The barrel 1 accommodates an object to be plated (not shown) inside, and as described in the width direction (left and right direction in FIG. 1) of the hexagonal tubular body 1b, the side walls 1c and 1c It becomes taper part 1a and 1a to which diameter is reduced toward it. The side walls 1c and 1c may be integrally formed with the body portion 1b or may be formed separately and joined. In the rotary barrel apparatus for plating of the present invention, the shape of the barrel is not particularly limited, and may be cylindrical or polygonal cylindrical, and a cylinder having no tapered portion. It may be shaped. The barrel 1 corresponds to a product having a flat plate shape with a thickness of 0.01 to 1 mm, a vertical width of 0.3 to 5 mm, and a horizontal width of 0.3 to 5 mm as an unshown plated object to be accommodated. In the present invention, the size and shape of the object to be plated are not particularly limited, and examples of the object to be plated include a plate shape having a substantially U-shaped cross section, a box shape having an upper end opening, an upper end and A product having a plate shape having a substantially U-shaped cross section having a flange at its lower end and a box-like shape having a flange at its upper end opening can be mentioned.

  The barrel 1 is provided with a plurality of mesh portions 1d in the body portion 1b as shown in FIG. . In the other drawings, mesh portions are omitted in the drawings. Here, in the rotary barrel apparatus for plating of the present invention, the means for providing liquid permeability of the barrel is not particularly limited, and a large number of slits or small holes may be opened in the barrel peripheral wall. . The pore size (mesh size of mesh) of the mesh portion 1d is a size that does not allow the above-mentioned material to be plated to pass through and the plating solution easily flows into the barrel, and is adjusted according to the size of the material to be plated It can be selected appropriately, and is not particularly limited, but in consideration of the flowability of the plating solution into the barrel, it is preferable that the mesh number is 70 mesh or less, and preferably into the plating solution barrel. It is more preferable that the mesh size is 50 to 70 mesh in consideration of the inflowability of the metal and the size of the object to be plated. When the pore diameter of the mesh is too small, the plating solution may not flow into the barrel in some cases, and when it is too large, the object to be plated may be easily released out of the barrel or may be easily clogged in the mesh. In addition, when the hole diameter of the mesh decreased and the plating solution did not easily flow into the barrel, the liquid flow generated by the rotation of the barrel sufficiently prevented sticking to the inner wall of the object to be plated, or stuck to the inner wall Although it tends to be difficult to peel off the object to be plated, in the case of the present invention, since the eddy current of the plating solution is generated in the barrel by the liquid flow changing member, sticking to the inner wall of the object to be plated is sufficiently prevented. It becomes possible to make it easy to peel off the to-be-plated thing stuck to these.

  The rotating shafts 7 are connected to the side walls 1c of the barrel 1 respectively, and as shown in FIG. 1, the rotating shaft 7 on one side (right side in the drawing) is connected to the gear 48. The rotary shafts 7, 7 slide in the notches 32, 32 of the support plates 31, 31 of the support member 3 as described later, and are inserted into the slide bearings 8, 8 to be attached. The slide bearings 8, 8 are provided with constricted parts 8a, 8a, and as shown in FIG. 5, the diameter r of the constricted part 8a is a notch 32 so as to be slidable in the notch 32 of the support plate 31. The lock nuts 9, 9 and the bearings 10, 10 are attached, respectively, which are set according to the height h of the support plate 31 and prevent the dropouts from the notches 32, 32 of the support plates 31, 31.

  In the figure, 1e is a corner of the tapered portion 1a of the barrel 1, and as shown in FIG. 3, the barrel when the corner 1e of the tapered portion 1a is located below the lower side 2a of the liquid flow changing member 2 in a front view. The shortest separation distance L between the surface of the first taper portion 1a and the lower side 2a in a front view is set. The shortest separation distance L is a distance having a gap such that the fluid flow changing member does not collide with or contact the tapered portion 1a of the barrel 1 when the barrel 1 is rotating, preferably 1 to 30 mm, more preferably More preferably, it is 1 to 10 mm, more preferably 1 to 5 mm. If the distance is too short, it may be difficult to prevent contact between the barrel and the fluid flow changing member depending on the swing width of the barrel during rotation, and if the distance is too long, the function and effect of the present invention can be sufficiently obtained. It may be difficult. The barrel 1 is provided with a lid (not shown) at one place.

  The liquid flow change members 2 and 2 have a square shape in a front view, and the shape of the lower sides 2a and 2a in a front view corresponds to the surface shape of the corners 1e and 1e of the tapered portions 1a and 1a of the barrel 1. When the barrel 1 is attached to the support member 3, the liquid flow changing members 2 and 2 have the shortest surfaces of the tapered portions 1 a and 1 a of the barrel 1 and the lower sides 2 a and 2 a of the liquid flow changing members 2 and 2 in front view Each of the support plates 31 and 31 of the support member 3 is fixed so that the separation distance L is the above-described distance. In the present invention, the flow change member may be disposed over the entire width above the barrel, or may be above the middle in the width direction of the barrel, or in the flow change members 2 and 2. As in the case of the upper side of the left and right side end sides in the width direction of the barrel, it may be provided laterally only above a part in the width direction of the barrel. Accordingly, the shape of the lower side in a front view of the liquid flow change member corresponds to the surface shape of the width direction of the barrel in the mounting position, in other words, the entire width of the barrel or a part of the width direction. Further, the shortest separation distance between the barrel surface and the lower side of the flow change member is, for example, the average separation distance between the barrel surface and the flow change member if the barrel of the barrel is cylindrical, and the barrel of the barrel It is an average separation distance between the surface of the barrel corner portion and the fluid flow changing member when the barrel corner portion is positioned directly below the fluid flow changing member at the time of barrel rotation if the portion has a polygonal cylindrical shape. Further, in the present invention, the fluid flow changing member is disposed above the barrel, and, for example, above the surface of the upper half in the height direction when the barrel attached to the support member is viewed from the front. Although it can be disposed, in consideration of the fact that the effect by the disposition of the fluid flow changing member 2 can be sufficiently obtained, as shown by the arrow P in FIG. It is preferred that the upper side of the upper side of the

  The support member 3 is constructed on the upper side of a pair of support plates 31, 31 for rotatably supporting the barrel 1 and the lower connecting rod 33 installed under the support members 31, 31 and the support members 31, 31. An upper connecting rod 34 is provided, and the flow change members 2 and 2 are fixed to the support plates 31 and 31 as described above. Then, as shown in FIGS. 2 and 5, the narrow portions 8a, 8a of the plain bearings 8, 8 in which the rotary shafts 7, 7 of the barrel 1 are inserted into the notches 32, 32 of the support plates 31, 31 are cut. Slide the barrel 32 to the back of the notches 32, 32, and adjust the tightening of the barrel 1 to the support plates 31, 31 by the lock nuts 9, 9 so that the barrel 1 can rotate and not fall off. And it supports removably.

  In the present invention, the material, size, etc. of the barrel and the support member are not particularly limited, and the same material such as a resin as in the prior art can be appropriately selected, and the size and the like are also plated It can be selected as appropriate. Further, the material of the liquid flow changing member is more suitable because it can be easily fixed to the supporting member if it is matched to the supporting member, and the size and the like are appropriately selected according to the size of the barrel and the supporting member. can do. In addition, the fixing means in particular to the support member of a liquid flow change member is not restrict | limited, For example, the adhesion means according to the material can be selected suitably and can be fixed.

  The rotary drive means 4 for rotating the barrel 1 includes a barrel rotation drive motor 41, a gear 43 connected to the motor shaft 42 of the barrel rotation drive motor 41, a gear 44 meshing with the gear 43, and a barrel connected to the gear 44 The rotational drive shaft 45, a gear 46 connected to the barrel rotational drive shaft 45, a gear 47 meshing with the gear 46, and a gear 48 meshing with the gear 47, the gear 48 being the rotational shaft of the barrel 1 as described above It is linked to 7. The barrel rotation drive motor 41 is attached to the plating tank 5 by the motor attachment member 49. The rotation drive mechanism 4 drives the barrel rotation drive motor 41, transmits the rotation of the motor shaft 42 of the barrel rotation drive motor 41 to the gear 44 via the gear 43 to rotate the gear 44, and barrels the rotation of the gear 44 The rotational shaft 7 of the barrel 1 connected to the gear 48 is rotationally driven by rotating the gear 48 engaged with the gear 47 via the gear 47 which is transmitted to the gear 46 via the rotational drive shaft 45 and engages with the gear 46 Can. In the plating rotary barrel device of the present invention, the configuration of the rotation driving means is not particularly limited, and for example, the motor of the rotation driving means may be mounted on the upper portion of the support member.

  Next, an embodiment of the barrel plating method of the present invention using the plating rotary barrel apparatus A will be described. First, an unshown material to be plated is stored in the barrel 1 by opening a lid (not shown) of the barrel 1 (accommodating step). Then, the barrel 1 is horizontally mounted on the support plates 31 and 31 of the support member 3 as described above on the support member 3 in which the liquid flow change members 2 and 2 are fixed, and the upper connecting rod 34 of the support member 3 is not illustrated. The barrel 1 is dipped in the plating solution 6 in the plating tank 5 by being hooked to the transfer device (immersion step). Here, the plating method using the plating rotary barrel apparatus A may be either an electroplating method or an electroless plating method, and according to the plating method, a plating solution, an apparatus in a plating tank, members, etc. Is selected as appropriate. In addition, in the case of the electroplating method, the cathode terminal which is not shown in figure is inserted in the valve | bulb 1 using one rotating shaft 7. FIG. Then, the barrel 1 is rotated in the plating tank 5 by the rotary drive mechanism 4 to generate a flow of the plating solution 6 and change the flow of the plating solution on the upper surface of the barrel 1 to create a vortex in the barrel 1 The object to be plated (not shown) in the barrel 1 is subjected to an electroplating process or an electroless plating process (plating process step). Then, the barrel 1 is pulled up from the plating tank 5 by a transport device (not shown), the lock nuts 9 and 9 are loosened, the barrel 1 is removed from the support member 3, the lid of the barrel 1 (not shown) is opened, Take out the finished product (not shown).

  According to this barrel plating method, the eddy current of the plating solution 6 acts on the inner wall of the barrel 1 in accordance with the rotational movement of the barrel 1 to prevent sticking to the inner wall of the object to be plated (not shown). Even if the plating adheres to the inner wall, it can be peeled off. And since the barrel 1 is detachably attached to the support member 3, it becomes easy to take out a to-be-plated thing. Therefore, according to the plating rotary barrel apparatus A, no matter what kind, shape, or size of the object to be plated, and what kind of plating film is, there is a problem in the finish of the product. It is possible to prevent sticking to the inner wall of the barrel and prevent the formation of product residue without being generated.

  In addition, the to-be-plated thing which is accommodated in the barrel 1 and which is not shown in figure is flat form of 0.01-1 mm in thickness, 0.3-5 mm in height, and 0.3-5 mm in width as mentioned above. Here, the object to be plated using the barrel plating method of the present invention is not particularly limited in its size and shape, but in consideration of the object and effects of the present invention, the thickness is preferably 0.01. 1 mm, more preferably 0.05 to 0.1 mm, the width preferably 0.3 to 5 mm, more preferably 1 to 2 mm, the width preferably 0.3 to 5 mm, more preferably 1 to 2 mm The shape is more preferable. The number of revolutions of the barrel is not particularly limited, but preferably 10 rpm or less, more preferably 3 to 8 rpm, and still more preferably 5 to 7 rpm. If the number of rotations is too small, it may be difficult to sufficiently prevent sticking of the object to be plated to the inner wall of the barrel. If the number is too large, the product may be easily lifted by the momentum of rotation.

  Next, a second configuration example of the plating rotary barrel device of the present invention will be described with reference to FIG. FIG. 6 shows a state in which the plating rotary barrel device A1 according to the second configuration example is longitudinally cut at the tapered portion of the barrel as shown in FIG. 4 and the plating rotary barrel device A1 is viewed from the side. It is a schematic cross-sectional view, and the barrel portion 11b of the barrel 11 has a cylindrical shape, and the plating rotary barrel device A1 has tapered portions 11a and 11a, and a pair of circular side walls 1c (only one is shown in FIG. 6). The bottom 21b of the liquid flow changing member 21 (only one of which is shown in FIG. 6) is tapered such that the bottom surface 21b faces the rotational direction of the barrel 11 (arrow Q in the drawing). It corresponds to the surface shape of the portion 11a. In the case of this plating rotary barrel apparatus A1, the shortest separation distance L between the barrel surface and the liquid flow changing member is the front surface which is the lower side (lower end side) of the tapered portion 11a surface and the bottom 21b of the liquid flow changing member 21. It is a distance from the visual lower side 21a.

  According to the plating rotary barrel apparatus A1 having the above configuration, like the above-described plating rotary barrel apparatus A, it can be suitably used for the barrel plating method of the present invention, and the kind and shape of the object to be plated Regardless of the size or size of the plating film, it prevents sticking to the inner wall of the barrel without causing any problem in the finish of the product and prevents the product residue from occurring It is possible to

  The present invention is not limited to the above configuration, and can be variously modified without departing from the scope of the present invention.

A, A1 Rotary barrel device for plating 1, 11 Barrel 1a, 11a Tapered portion 2, 21 Liquid flow changing member 2a, 21a Bottom side 21b Bottom surface 3 Support member 4 Rotational drive means L Shortest separation distance

Claims (10)

A hollow cylindrical shape for accommodating the object to be plated is provided inside, and a liquid-permeable barrel, a support member rotatably supporting the barrel horizontally or substantially horizontally, and the barrel are rotated. A rotary barrel apparatus for plating, which is provided with a rotary drive means and which dips the barrel into a plating solution in a plating tank and rotates the plating object while rotating the barrel, and has a surface shape in the width direction of the barrel. A rotary member for plating characterized in that it comprises a plate-like member having a corresponding lower side shape, and a liquid flow changing member disposed above the barrel so that the lower side approaches the surface of the rotating barrel. Barrel device. The plating rotary barrel apparatus according to claim 1, wherein the liquid flow changing member is attached to the support member. The plating rotary barrel apparatus according to claim 1 or 2, wherein the shortest distance between the surface of the barrel and the lower side of the fluid flow changing member is 1 to 30 mm. The plating rotary barrel apparatus according to any one of claims 1 to 3, wherein the liquid flow changing member includes a tapered bottom surface facing in the rotational direction of the barrel. The above-mentioned liquid flow change member which has the taper part which diameter-reduces toward the end on the width direction both ends side of the above-mentioned barrel and which has the shape of the lower side corresponding to the surface shape of the taper part The rotary barrel apparatus for plating according to any one of claims 1 to 4, which is disposed above each of. The plating rotary barrel apparatus according to any one of claims 1 to 5, wherein the barrel is detachably attached to the support member. A step of containing the object to be plated in a barrel having a liquid-permeable hollow cylindrical shape which does not allow the object to be plated to pass through, and the above-mentioned barrel attached horizontally or substantially horizontally to the support member The immersion step of immersing in the plating solution and rotating the barrel in the plating tank to create a flow of the plating solution and causing the liquid flow to be in the vicinity of the upper surface of the barrel by a plate member A plating treatment step of subjecting the object to be plated in the barrel to electroplating or electroless plating while changing the liquid flow to create a vortex in the barrel; Plating method. The barrel plating method according to claim 7, wherein the object to be plated has a flat plate shape having a thickness of 0.01 to 1 mm, a vertical width of 0.3 to 5 mm, and a horizontal width of 0.3 to 5 mm. The barrel plating method according to claim 7 or 8, wherein the rotation speed of the barrel is 10 rpm or less. The barrel plating method according to claim 7, 8 or 9, wherein the plating rotary barrel device according to any one of claims 1 to 6 is used.

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