JPH0730691Y2 - Rack for plating - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a plating rack.

(B) Conventional Technology Conventionally, as a plating rack, there is one described in Japanese Utility Model Publication No. 62-36853.

That is, such a plating rack has a concave portion on one side and supports an object to be plated having an annular stepped portion on the bottom surface side of the concave portion, and is made of a conductive material such as a rod and has a liquid contact portion. Is composed of a main body coated with insulation and a support body made of a conductive material and protruding from a proper place of the main body into the support space.The support body has a branch portion coated with insulation and the same branch portion at the tip of the branch portion. It is composed of a non-insulating bottom portion formed to have a diameter larger than the outer diameter, and a locking portion protruding from the upper surface side of the seat portion to a diameter smaller than the outer diameter of the seat portion.

When performing a plating operation using such a rack for plating, the recess of the object to be plated is fitted into the tip of the support, and the engaging portion of the support is held in the small recess forming the annular step of the object to be plated. Is inserted, and the tip end surface of the seat portion is brought into contact with the shoulder surface of the annular step portion, whereby the object to be plated can be supported in a stable state.

(C) Problems to be solved by the invention However, the plating rack has the following problems.

That is, since the seat portion of the bearing has a larger diameter than the branch portion that supports the seat portion and the locking portion that protrudes from the upper side surface of the seat portion, the object to be plated is also supported. After plating the plating rack supported on the body by immersing it in the plating tank and then pulling up the plating rack, the plating solution does not completely escape from the annular step of the plating target, so plating is performed depending on the plating target. There is a problem that the amount of the plating liquid pumped out of the bath increases, the consumption of the plating liquid increases, and the amount of the plating chemical used increases.

Further, because of the above structure, the cleaning efficiency was poor even in the water washing process. Therefore, after completion of the automatic plating process, it is necessary to remove the object to be plated from the plating rack and wash it again, resulting in poor productivity.

Furthermore, when chrome plating is performed, there is a risk that chromic acid or the like will come out and adhere to an operator when the object to be plated is removed from the plating rack. Further, if chromic acid or the like adheres to another object to be plated, such another object to be plated also has to be recleaned. In particular, when attached to an object to be plated before the plating treatment, even if the automatic plating treatment is performed as it is, such an object to be plated cannot be subjected to normal plating treatment, resulting in a defect.

Since the plating rack itself is heavy, it was necessary to reduce the amount of the plated object accordingly.

That is, the amount of the object to be plated that can be hung on the plating rack is (a) the effective size that the object to be plated can be hung on the rack for plating, and (b) the object to be plated on the rack for plating. When the plating rack is heavy, it is determined by the total weight of the plating rack and (c) the total area of the plated surface of the plating rack that is hung on the plating rack. I had to reduce the amount.

The manufacturing cost, which includes the processing cost of the plating rack and the material cost, was high.

That is, in the prior art, the machining cost was high because the cutting process by a lathe or the like was required to manufacture the support.

Also, since the support must be a conductive material, copper or brass alloy is generally used, but these are very expensive, so if the volume of the material increases even a little Material costs were very high.

(D) Means for Solving the Problems In the present invention, the rack body is provided with a tubular seat portion for energizing and supporting the object to be plated, and the peripheral wall of the tubular seat portion is provided with a communication hole for draining liquid. The present invention relates to a plating rack provided.

Further, the present invention provides a plating rack having the above-described configuration, in which a peripheral wall of the cylindrical seat portion is axially divided to provide a cutout for draining liquid, and the cylindrical seat is provided in the cutout. Another structural feature is that the portion is provided with an urging support for pressing the object to be plated, which is electrically supported, from the inside.

(E) Operational Effects According to the present invention, the following operational effects occur.

Since the concave portion of the object to be plated can be fitted and supported on the outer peripheral surface of the tubular seat portion, the plating that has flowed into the concave portion of the object to be plated and the internal space of the object to be plated during the plating process. The liquid can be smoothly and reliably discharged through the tubular seat portion.

Moreover, since the cylindrical seat portion is provided with a communication hole or cutout for draining liquid, even if the inner peripheral surface of the concave portion is formed to have a diameter larger than that of the opening end of the concave portion, these communication holes are formed. The holes and the cutouts can ensure that the plating liquid will escape.

Further, even when the stepped small diameter portion of the object to be plated is inserted and supported in the tubular seat portion, the constant formed between the inner peripheral surface of the tubular seat portion and the outer peripheral surface of the stepped small diameter portion. It is possible to smoothly and surely release the plating liquid through the gap.

Therefore, the amount of the plating liquid pumped out of the plating tank by the object to be plated can be reduced, so that the consumption of the plating liquid can be reduced and the amount of the plating chemical used can be reduced.

Since the tubular seat portion has a tubular shape and is open at both ends, it can be reliably washed in the water washing step.

Therefore, when removing the object to be plated from the cylindrical seat part, chromic acid, etc. does not come out and problems such as having to clean again do not occur, improving cleaning efficiency and further production efficiency. Can be made.

Since the cylindrical seat portion is hollow, the plating rack itself becomes light in weight, and the allowable amount on which the object to be plated can be hung up increases accordingly, thus improving the productivity.

It is possible to reduce the manufacturing cost including the processing cost of the plating rack and the material cost.

In other words, in comparison with the conventional case where the cutting process using a lathe or the like was required to manufacture the bearing, the cylindrical seat portion according to the present invention only needs to cut the cylindrical material, and the special cutting It does not require processing and is easy to process.

Further, since the volume of the expensive bearing body made of copper or copper alloy, especially the cylindrical seat portion can be reduced as compared with the conventional bearing body, the material cost can be significantly reduced.

Since the support body is provided with a biasing support body that pushes outward the inner peripheral surface of the concave portion of the object to be plated fitted into the tubular seat through the cut end, the object to be plated is The bearing can be reliably held.

(F) Embodiments An embodiment of the present invention will be described in detail with reference to the drawings. (A) shown in FIGS. 1 and 2 is a plating rack according to the present invention, and the rack (A) is plated. Attach the object (6) (see FIG. 3), attach the rack (A) to an automatic plating device (not shown) that automatically performs all the processes such as cleaning, nickel plating, and chrome plating, The whole surface of the object to be plated (6) having 7) is plated.

The plating rack (A) has a vertical rod (1) made of copper as a rack body having a hook (1a) at the upper end.
Further, a support body (3) for supporting the object (6) to be plated is attached at an interval vertically.

Further, as shown in FIG. 3, the supporting body (3) is provided with the base end (4a) of the branch portion (4) made of phosphor bronze on the vertical rod (1), and the tip end portion of the branch portion (4). (4b) is bent upward and inclined, and the inner peripheral surface of a tubular seat portion (5) made of copper or brass formed in a tubular body is attached to the tip portion (4b) to form the same tubular shape. The seat (5) has an inclined posture.

The surface of the branch portion (4) and the inner peripheral surface of the tubular seat portion (5) are insulation-coated (4 ') (5').

Moreover, as shown in FIG. 3, the tubular seat portion (5) is
The outer diameter is formed to be substantially the same as the inner diameter of the recess (7) of the object to be plated (6), and the recess (7) is formed in the cylindrical seat portion (5), and the inner peripheral surface (7a) of the recess (7) is formed. Is the outer peripheral surface (5b) of the tubular seat (5)
And the shoulder surface (8a) of the ring-shaped step (8) formed on the bottom side of the recess (7),
The tip end surface of the tubular seat portion (5) can be brought into contact with the object (6) to be plated and supported by the tubular seat portion (5).
In FIG. 3, (9) is an internal space of the object to be plated (6), which communicates with the recess (7).

Therefore, when the plating rack (A) supporting the object to be plated (6) is immersed in the plating tank of the automatic plating apparatus,
The plating solution flows from the concave portion (7) of the object to be plated (6) through the cylindrical seat portion (5) into the internal space (9), but when the plating rack (A) is pulled up from the plating tank. First, it flows out from the concave portion (7) through the inside of the cylindrical seat portion (5). At this time, since the tubular seat portion (5) supports the object to be plated (6) in an inclined posture, the internal space of the object to be plated (6) passing through the cylindrical seat portion (5) ( The outflow of the plating solution in 9) can be made smooth.

Further, as shown in FIG. 5, the support body (3) has an inner diameter of the recess (11) of the object to be plated (10) and the recess (11).
The outer diameter and the inner diameter of the cylindrical seat portion (5) are changed according to the outer diameter of the protruding portion (12) projecting inside, and the projection of the object to be plated (10) inside the cylindrical seat portion (5). It is configured so that it can be supported with the part (12) inserted.

Further, (13) shown in FIG. 6 shows a support body as a second embodiment, in which the outer peripheral surface of the cylindrical seat portion (15) is attached to the tip end portion (14a) of the branch portion (14). , The surface of the same branch (14),
The outer peripheral surface of the cylindrical seat portion (15) is insulation-coated (14 ') (15').

Then, by the support (13), the stepped small diameter portion (16
The object to be plated (16) having a) is replaced with the stepped small diameter part (16a)
Is inserted into the tubular seat (15) and the stepped small diameter part (16
The shoulder surface (16b) of a) is supported by being supported by the tip surface of the tubular seat portion (15).

At this time, the inner peripheral surface of the cylindrical seat portion (15) and the stepped small diameter portion (16a)
A constant space (t) is formed between the outer peripheral surface of the plate and the outer peripheral surface of the plate so that the plating liquid can be drained well.

Further, (17) shown in FIG. 7 shows a support body as a third embodiment. The support body (17) has the same structure as the support body (3) and has a cylindrical seat portion ( The peripheral wall of 18) is provided with a communication hole (19) for draining liquid. (18 ')
Is an insulating coating portion provided on the inner peripheral surface of the cylindrical seat portion (18).

The support body (17) is suitable for supporting an object to be plated (21) in which the inner peripheral surface of the recess (20) is formed to have a larger diameter than the opening end (20a) of the recess (20). Therefore, even when the outer diameter of the cylindrical seat portion (18) is formed to be substantially the same as the diameter of the opening end (20a) of the recess (20), the plating solution flowing into the recess (20) is communicated with the communication hole. The tubular seat (18) can be passed through the (19) and smoothly flow out to the outside.

Further, (22) shown in FIG. 8 and FIG. 9 shows a bearing as a fourth embodiment, and the bearing (22) is made of copper or brass as shown in FIG. The tubular seat portion (23) is vertically divided in the axial direction to provide a cutout (23a) for draining liquid.

(23 ') is an insulating coating portion provided on the inner peripheral surface of the cylindrical seat portion (23).

Therefore, the support body (22) also has the recess (20) like the support body (17) of the third embodiment having the communication hole (19).
It is suitable for supporting an object to be plated (21) whose inner peripheral surface is formed to have a diameter larger than that of the opening end (20a) of the plate, and the plating liquid flowing into the recess (20) is cut through the cut end (23a). Cylindrical seat (2
3) It can pass through the inside and smoothly flow out.

Moreover, since the tubular seat portion (23) is formed of a material that is easily deformable, such as copper or brass, and has the cut end (23a), as shown in FIG. The width of the cut end (23a) can be expanded and contracted and deformed so as to fit the inner diameter of the recess (20) of the (21).

Therefore, one plating rack can reliably support various objects to be plated, and the number of plating racks can be reduced.

Further, (24) shown in FIGS. 12 and 13 shows a bearing as a fifth embodiment, and the bearing (24) has a branch portion (2).
At the tip of 6), the same as the cylindrical seat portion (23) of the support body (22) as the fourth embodiment, the cut end (25
The cylindrical seat portion (25) provided with a) is attached, and the base end of the rod-shaped urging support body (27) made of an elastic material is attached to the distal end portion of the branch portion (26). Extend the middle of (27) so as to face the cut (25a) of the tubular seat (23) at the outer side position, and further bend the tip (27a) inward so that the tip is the same cut (25a). It is located in the tubular seat (25) through the inside.

Therefore, when the object to be plated (28) is fitted into the tubular seat portion (25), the urging support (27) located outside the tubular seat portion (25) with respect to the cut (25a). ), The fitting is performed while pressing and displacing the tip end part (27a) of the plate against the inner side of the cylindrical seat part (25). , The tip of the biasing support (27) (27a) is cut (2
Since the inner peripheral surface of the recess of the object to be plated (28) is pressed outward through 5a), the object to be plated (28) can be reliably supported and held, and the object to be plated (28) is also retained. The state is
Even in the state of being inclined upward or downward, which is almost horizontal, it is possible to reliably hold the object to be plated (28) by the biasing support (27) and prevent the object to be plated (28) from falling. .

Further, FIGS. 14 to 17 show a plating rack (D) having a support body (35) which is a modification of the support body (3) as the first embodiment.

The plating rack (D) is a modification of the plating rack (A) and has a hook body (30a) at the upper end (same as the hook (1a) of the plating rack (A)). To the copper vertical rod (30) and the copper horizontal rod (3
1) Horizontally laid horizontally, and each horizontal rod (31) has a support (3
5) is attached.

Therefore, by using the horizontal rod (31), the effective size of the plating rack (D) can be effectively utilized, and the number of objects to be plated (36) can be increased by that amount, thus improving productivity. Is improved.

Further, although an example in which the support body (35) is attached to the plating rack (D) is shown, the support body (35) is not limited to the support body (35), the support body (13) as the second embodiment, and the third embodiment as the third embodiment. Support (17),
The support body (22) as the fourth embodiment and the support body (24) as the fifth embodiment may be attached.

Further, in the present embodiment, the cylindrical seat portion is not limited to a circular sectional shape, but various shapes such as a polygonal shape and an elliptical shape are conceivable, and the cylindrical seat portion is determined by the shape of the concave portion of the object to be plated.

The embodiment of the present invention is configured as described above, and according to this embodiment, the following operational effects are produced.

On the outer peripheral surfaces of the cylindrical seat portions (5), (15), (18), (23) and (25) of the support bodies (3), (13), (17), (22) and (24), the plated objects (6) (21) are provided. Since the recesses (7) and (22) of () can be fitted and supported, the recesses (7) and (20) of the objects to be plated (6) (21), and the objects to be plated (). The plating liquid that has flowed into the internal space (9) of 6) can be smoothly and reliably flowed out through the tubular seat portion (5).

Moreover, since the tubular seat portions (18) (23) (25) are provided with the communication holes (19) or the cutouts (23a) (25a) for draining liquid, the open end ( Same recess (20) than 20a)
Even if the inner peripheral surface of the plate is formed to have an expanded diameter, the communication hole (19) and the cutouts (23a) and (25a) can ensure that the plating liquid will escape.

In addition, even when the stepped small diameter portion (16a) of the object to be plated (16) is inserted and supported in the tubular seat portion (15) of the support body (13), the tubular seat portion (15) Through the constant interval (t) formed between the inner peripheral surface and the outer peripheral surface of the stepped small diameter portion (16a), it is possible to smoothly and surely release the plating liquid.

Therefore, the amount of the plating liquid pumped out of the plating tank by the object to be plated can be reduced, so that the consumption of the plating liquid can be reduced and the amount of the plating chemical used can be reduced.

In addition, the support (3) (13) (17) (22) (24)
Since each of the cylindrical seat portions (5), (15), (18), (23) and (25) has a tubular shape and both ends are open, the washing in the water washing step can be reliably performed.

Therefore, when removing the object to be plated from the tubular seats (5), (15), (18), (23), and (25), chromic acid, etc. will not come out and must be washed again. It is possible to improve the cleaning efficiency and further the production efficiency without causing any trouble.

Since the cylindrical seats (5), (15), (18), (23) and (25) are hollow, the plating rack itself becomes light in weight, and the allowable amount on which the object to be plated can be hung up increases accordingly. Productivity is improved.

It is possible to reduce the manufacturing cost including the processing cost of the plating rack and the material cost.

That is, in comparison with the conventional case where a lathe or the like had to be cut to manufacture the support body, the support body (3) (13) (17) (22) (24) of the present embodiment is specially manufactured. Easy to process without the need for various cutting processes. Especially the support (3)
The tubular seat portion (5) of (1) need only cut the tubular material.

Also, bearings made of expensive copper or copper alloy (3) (13)
(17) (22) (24), especially tubular seats (5) (15) (18)
Since the volumes of (23) and (25) can be reduced compared to the conventional bearing, the material cost can be significantly reduced.

The bearings (22) (24) are provided with axially split cuts (23a) (25a) in the cylindrical seat portions (23) (25) made of easily deformable materials such as copper and brass. Therefore, the diameters of the cylindrical seat portions (23) (25) can be easily changed and adjusted according to the inner diameter of the recess (20) of the object to be plated (21),
Various plating objects can be plated with one plating rack, and the number of plating racks that can be possessed can be reduced.

The tip (27a) of the support (24) has a cut end (25a)
Through the inside, the object to be plated (2
The urging support (2) that urges the inner peripheral surface of the recess of 8) outward.
Since 7) is provided, the object to be plated (28) can be reliably supported and held.

Moreover, even when the object to be plated (28) is held in a state of being inclined upward or downward, which is close to horizontal, the biasing support (27)
The object to be plated is securely held by the
8) It is possible to prevent the fall.

Further, the object to be plated (28) and the cylindrical seat portion (25) are surely brought into contact with each other, stable energization can be performed, and the energization efficiency is further improved, so that the plating finish can be further improved.

Further, since the urging support (27) has its tip positioned inside the tubular seat (25) through the cut (25a), the object to be plated (28) is fitted into the tubular seat (25). When mating, the plated object (28) does not have a problem such as being caught on the tip of the urging support (27), and the bearing work of the plated object (28) is performed on another bearing body (3). (13) (17) (22) can be done with one hand.

[Brief description of drawings]

FIG. 1 is a front view of a plating rack according to the present invention, and FIG.
FIG. 4 is a side view of the rack, FIG. 3 is an enlarged cross-sectional view of the support body as the first embodiment, FIG. 4 is an enlarged side view of the support body, and FIG. 5 is an enlarged cross-sectional view of the support body. FIG. 6 is an enlarged sectional view of the bearing body as the second embodiment, FIG. 7 is an enlarged sectional view of the bearing body as the third embodiment, and FIG. 8 is an enlarged sectional view of the bearing body as the fourth embodiment. FIG. 9 is a sectional view taken along line I-I of FIG.
FIG. 10 is an explanatory view of the processing of the cylindrical seat portion, FIG. 11 is an explanatory view showing a state in which the diameter of the cylindrical seat portion is changed and adjusted, and FIG. 12 is an enlarged side view of the support body as the fifth embodiment, and FIG. Fig. 12 is a sectional view taken along the line II-II in Fig. 12, and Figs. 14 to 17 are front views, side views, and essential views of a plating rack equipped with a bearing which is a modification of the bearing as the first embodiment. Partial enlarged side view and essential part enlarged plan view. (A): Plating rack (3) (13) (17) (22) (24): Support (5) (15) (18) (23) (25): Cylindrical seat (6) (21) ) (28) (36): Plated object (19): Communication hole (23a) (25a): Cut end

Claims (3)

[Scope of utility model registration request] 1. A plating rack in which a tubular seat portion for electrically supporting an object to be plated is attached to a rack body, and a communication hole for draining liquid is formed in a peripheral wall of the tubular seat portion. 2. The plating rack according to claim 1, wherein the peripheral wall of the cylindrical seat portion is vertically divided in the axial direction to provide a cutout for draining liquid. 3. The plating rack according to claim 2, wherein an urging support member is provided in the cut end to press the object to be plated, which is electrically supported by the cylindrical seat portion, from the inside.