JPH0343246Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention mainly relates to a barrel plating device for barrel plating screws, washers, and other small parts.

(Prior art) Conventionally, as this type of device, for example,
As seen in 55337, a base plate having a rotating barrel at the front that opens to the top and a motor at the rear that drives this is hung from a cathode bar on the top of the bathtub using a hook at the upper rear of the base plate. A type of bathtub is known in which the bathtub is placed in an inclined position extending forward and downward into the bathtub.

(Means for solving the problem) However, in this case, the barrel generally simply rotates in conjunction with the motor, and in such a barrel, the workpiece inside is flat like a flat washer. In the case of small parts having round surfaces, they tend to stick to each other or to the inner surface of the barrel, making it difficult to obtain uniform processing as a whole.

(Means for Solving the Problems) The purpose of the present invention is to obtain a device free from such inconveniences, and the present invention has a rotating barrel at the front whose top surface is open and a motor at the rear that drives the barrel. The plate is hung from the cathode bar on the upper surface of the bathtub by a hook at the rear upper part of the plate so as to face the bathtub in an inclined position extending forward and downward. , the shaft is removably fitted onto the support shaft on the base plate so as to be tiltable and rotatably supported in conjunction with the motor, and furthermore, a plurality of protrusions are provided at appropriate intervals on the outer periphery of the barrel. In addition, a tapered chevron-shaped guide cam is fixedly provided on the base plate side so as to face the rotation locus of the protrusion and to temporarily guide the protrusion upward.

(Function) To explain its function, the rotating barrel rotates on the spindle while containing the work to be processed.
During this rotation, each protrusion on the outer periphery is successively guided onto the guide cam on the base plate side and once moved upward, and thus the barrel is tilted to one side each time, and then the tilting This is repeated, causing a reciprocating vibration, and the internal workpieces are released from adhesion to each other or the inner surface of the barrel, and become a uniform mass as a whole. This allows for uniform processing.

(Example) An example of implementing the present invention will be explained with reference to attached drawings.

In the drawings, reference numeral 1 indicates a base plate, and the base plate 1 has a front rotating barrel 2 located on its upper surface and opening the upper surface.
and a rear motor 3 for driving this, which is hung from a cathode bar 6 on the top surface of the bathtub 5 with a conductive hook 4 at the rear upper part, and is inserted into the bathtub 5 toward the front. I made it stand in a tilted position, extending downwards. In the drawing, 7 is a handle at the tail end of the base plate 1, 8 is a cathode ray extending from the hook 4 into the barrel 2, 9 is a drive gear on the lower side of the barrel 2, and 10 is a drive gear for driving the gear 9. A gear train connected to the output shaft of the motor 3 is shown.

Although the above is not particularly different from the conventional one, according to the present invention, the barrel 2 is removably fitted to the support shaft 12 on the base plate 1 through the shaft hole 11 on the bottom surface thereof, so that it can be tilted freely. In addition, the barrel 2 is rotatably supported in conjunction with the motor 3, and a protrusion 1 is provided on the outer periphery of the barrel 2.
3 are arranged at appropriate intervals, and a tapered chevron-shaped guide cam 14 is fixed on the side of the base plate 1 so as to face the rotation locus of the protrusion 13 and once guide the protrusion 13 upward. I decided to do so.

To explain this in detail, in the illustrated embodiment, the barrel 3 includes a flange-like bottom plate 15 on its lower surface, a cylindrical shaft 16 having the shaft hole 11 inside thereof, and a support shaft 12 on the lower side thereof. is from the base plate 2 to the drive gear 9
The cylindrical shaft 16 is fitted into the support shaft 12 from above in the shaft hole 11 so as to be freely slidable and tiltable, and the cylindrical shaft 16 is supported in a manner that it can be tilted and is opened downward. Vertical slit 17
In one pair, the claws 18 are engaged with one pair of pawls 18 on the side of the gear 9 so as to be accompanied by the rotation of the gear 9.

Furthermore, six protrusions 13 are provided on the lower surface of the outer periphery of the bottom plate 15 in the circumferential direction, and each protrusion 13 has a tapered shape that gradually becomes thinner in the direction of rotation, as shown in FIG. 1 or 3. The guide cam 14 is fixed to the base plate 1 via a bracket 19 and has a tapered chevron shape that gradually becomes thicker in the direction of rotation, so that when the barrel 2 rotates, Each protrusion 13 rotates along with the bottom plate 15 and is guided onto the guide cam 14, and the cam 1
4, the barrel 2 moves upward and then moves repeatedly, and accordingly, the barrel 2 tilts to one side, and then releases the tilting and returns to the other side. In other words, the barrel 2 is subjected to a reciprocating tilting type vibration, and the works inside the barrel 2 are released from adhesion to each other and uniformly processed. In the drawings, reference numeral 20 indicates a holding member extending above the bottom plate 15 to prevent the barrel 2 from being pulled out, and the member 20 is moved outward as necessary to allow the barrel 2 to be pulled out upward.

(Effect of the invention) As described above, according to the invention, the barrel is repeatedly tilted to one side and tilted to the other side when the tilting is released, thereby imparting rocking-type vibration to the barrel. , the workpiece adheres to the wall of the barrel, and as a result, the adhered surface does not come into contact with the plating solution, and hydrogen gas adhering to the small holes can also be shaken off, thereby preventing plating defects. The process can be made uniform by eliminating the need for a separate drive source, and its operation is simply by rotating the barrel and guiding each protrusion onto the guide cam in sequence, eliminating the need for a separate drive source. This has effects such as simplifying the configuration.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of one example of the proposed device, Fig. 2 is a plan view taken from the - line, and Fig. 3 is a side view with a part cut away.
The figure is its front view. 1... Base plate, 2... Rotating barrel, 3... Motor, 4...
Hanging hook, 5... Bathtub, 6... Cathode bar, 11... Shaft hole, 1
2... Support shaft, 13... Projection, 14... Guide cam.

Claims (1)

[Scope of utility model registration request] A base plate having a rotating barrel at the front that opens the top surface and a motor at the rear that drives the barrel is hung from a cathode bar on the top surface of the bathtub using a hook at the rear upper part of the base plate, and is inserted into the bathtub toward the front. In a device that faces an inclined position extending downward, the barrel is fitted into a support shaft on the base plate in a shaft hole on the bottom surface of the barrel so as to be freely tiltable, and the barrel is tiltable in conjunction with the motor. The barrel is rotatably supported, and a plurality of protrusions are arranged at appropriate intervals on the outer periphery of the barrel,
A barrel plating device comprising a tapered chevron-shaped guide cam fixedly provided on the base plate side so as to face the rotation locus of the protrusion and guide the protrusion upward.