JPS6039090Y2 - Hanger for electrostatic painting - anti-painting cover - Google Patents

Description

[Detailed description of the invention] The present invention is a banger coating protection cover for electrostatic coating, specifically a work banger for supporting a member to be painted, and a trolley conveyor for holding and transporting this work banger in suspension. This invention relates to a paint-proof cover for the connecting contact surface on the trolley conveyor banger side at the connecting part with the banger.

In electrostatic painting, the workpiece to be painted must be electrostatically charged, but the connection between the work banger and the trolley conveyor banger, which serves as a conductive path for charging the workpiece with static electricity, is designed to reduce the contact resistance. must be kept to a minimum.

However, since the above-mentioned connecting parts are connected detachably in an unstable state, paint mist adheres to the connecting contact surfaces, especially the connecting contact surfaces on the trolley conveyor banger side, due to electrostatic adsorption, and conductivity increases depending on the frequency of use. The electrostatic coating quality gradually deteriorated, and there was a risk of fire caused by charged sparks.

Therefore, in the past, the paint stuck to the connecting part of the banger was scraped off with a file, etc. as needed, but since the degree of paint adhesion on the contact surface and the quality of conductivity cannot be determined visually, it is necessary to use a resistance meter. The drawback was that it required extremely troublesome work, such as having to measure and detect when it was time to remove the paint.

In view of the above-mentioned points, the purpose of the present invention is to solve the above-mentioned drawbacks by providing a removable paint-proof cover with an extremely simple structure at the connection part of the trolley conveyor banger with the work banger. The present invention provides a coating protection cover for electrostatic coating.

The paint-proof cover of the present invention solves the above-mentioned drawbacks and is extremely easy to attach and detach. Therefore, each time the trolley conveyor banger is used, it can be used by replacing the unpainted part with a new one, and the paint does not stick. The paint can be completely removed from used paint-resistant covers through simple chemical treatment, and the cover can be used as many times as needed, so there is no cost increase.

Hereinafter, the present invention will be explained based on the illustrated embodiments.

FIG. 1 is a schematic diagram showing the components for conveying a member to be coated in an electrostatic coating apparatus including a trolley conveyor banger in which the anti-coating cover of the present invention is used.

In the figure, the trolley conveyor banger 1 has an upper end that is a hook-shaped connecting part 1a that is detachably connected to a suspension part 4 of a known trolley conveyor, and a lower end that is a hook-shaped connecting part 2a of a work hanger 2. It is a metal rod-shaped thing that serves as a hook-shaped connecting part 1b that connects with the.

The work banger 2 is also made of a metal rod-shaped body similar to the trolley conveyor banger 1, and has the connecting portion 2a at the upper end, and a holding frame 3 made of a conductive material that holds the member to be painted 5 at the lower end. are fixed together.

The reference numeral 6 in the figure indicates a well-known spray gun that sprays paint onto the member 5 while moving up and down relative to the member 5 held within the holding frame 3.

Static electricity is applied to the member to be coated 5 held in this manner through the suspension portion 4 of the trolley conveyor, the trolley conveyor banger 1, the work banger 2, and the holding frame 3.

In these conductive paths, there is a connection part 1a between the vertical part 4 of the trolley conveyor and the trolley conveyor banger 1.
Since the paint sprayed by the sprayer 76 does not reach the connection point with the connecting point, no problem will occur.

However, the connecting portion 1b of the trolley conveyor banger 1 and the work banger 2, which are located close to the member 5 to be painted,
It is inevitable that some of the sprayed paint will scatter and adhere to the connection point with the connection part 2a.

Therefore, as described above, the paint that adheres to the connection points gradually reduces the conductivity between the two, and extremely troublesome work is required to counteract this.

By the way, in the above relationship, when the work banger 2 is suspended from the trolley conveyor banger 1,
The paint mist is electrostatically attracted to the holding frame 3 and the member to be painted 5,
Paint mist does not adhere to the connecting parts 1b and 2a between the trolley conveyor banger 1 and the work banger 2, but when the work banger 2 is not suspended from the trolley conveyor banger 1, the electrostatic adsorption force of the trolley conveyor banger 1 becomes strong. , paint mist adheres to the vicinity of the connecting portion 1b.

The paint-proof cover of the present invention covers the upper peripheral surface of the V-shaped hook portion of the connecting portion 1b when the work banger 2 is not suspended from the trolley conveyor banger 1 due to the work process as described above. This prevents paint from adhering to this area.

Next, an embodiment of the paint-proof cover of the present invention will be described with reference to FIG. 2.3.

As shown in Fig. 2, the paint-proofing cover 8 of the present invention is made of a cold rolled steel plate (SPC) with a semi-circular cross-sectional shape and a thickness of about 0.7 m/m, with the central part S. It is formed by having notches on both sides, bending it into a V shape, and then plating it with electroless nickel (PNi) for rust prevention.

The shape and size of the cover 8 are such that it can be detachably attached along the upper circumferential surface of the V-shaped hook portion of the connecting portion 1b of the trolley conveyor banger 1, as shown in FIG. .

By covering the upper peripheral surface of the hook part of the connecting part 1b of the trolley conveyor banger 1 with the paint-proof cover 8 formed in this way as shown in the figure, it is completely possible to prevent paint from adhering to the part. At the same time, by covering this part with a paint-proof cover 8 to which no paint is attached, it will come into direct contact with the lower contact surface of the connecting part 2a of the work banger 2, as shown in the figure, and the contact between the two will be reduced. Good conduction is achieved between the connecting portions 1b and 2a.

After the painting work was done in this state, Workbanger 2
When the bangers 1 and 2 are removed, the cover 8 is also removed at the same time, and the next time painting is done, a new anti-paint cover 8 is used to maintain the same good electrical conductivity between the bangers 1 and 2. is maintained, so the drawbacks of conventional bangers of this type are completely eliminated.

In addition, as is clear from the figure, this paint-proof cover 8 has an extremely simple structure and is extremely easy to attach and detach.
It does not cause an increase in man-hours.

Furthermore, once the paint-proof cover 8 has been used and has paint adhered to it, simply immersing it in a hot alkaline solution with a pH value of 12 or higher for about 3 to 4 days will completely remove the adhered paint. It can be used any number of times, and the peeling process does not require any manual labor, so the economic burden is extremely low.

4 and 5 are perspective views of a paint-proof cover showing another embodiment of the present invention, and a perspective view showing how the cover is used.

This paint-proof cover 9 is used for the trolley conveyor banger 1.
0 is made of a square piece of metal, and the connection part 10a with the work banger is a hook-shaped part bent at right angles in a U-shape as shown in the figure. It is formed so as to removably cover the inner peripheral surface and both side surfaces of the hook portion of the portion 10a.

It goes without saying that the functions and effects of the paint-proof cover 9 formed in this manner are exactly the same as those of the paint-proof cover 8 shown in FIG. 2 above.

Moreover, the paint-proofing cover of the present invention is not limited to the above-mentioned embodiments, and it goes without saying that it may be formed as appropriate depending on the shape of the connecting portion of the trolley conveyor hanger with the work hanger.

As explained above, according to the present invention, the drawbacks of the conventional hangers for coated members used in this type of electrostatic coating can be solved.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a schematic diagram showing the configuration of a conveying member for a member to be coated in an electrostatic coating apparatus in which the paint-proof cover of the present invention is used, and Fig. 2 is an embodiment of the present invention. FIG. 3 is a side view showing how the paint-proof cover shown in FIG. 2 is used; FIG. 4 is a perspective view of a paint-proof cover showing an example; A perspective view of the cover, FIG. 5, is a perspective view showing how the paint-proof cover shown in FIG. 4 is used. 1... Trolley conveyor hanger, 1b...
...Connection part of trolley conveyor hanger, 2...
...Work hanger 2a... Connection part of work hanger, 8, 9... Paint-proof cover.

Claims (1)

[Scope of Claim for Utility Model Registration] In electrostatic painting, in which an electrostatic field is generated on a workpiece to be painted and paint is adsorbed onto it, a conveyance device connected to a work banger that suspends and supports the workpiece to be electrostatically painted. A banger paint-proofing cover made of a conductive material and formed so as to be removably attached to the connecting portion of the trolley conveyor banger with the work banger along the connecting contact surface with the work banger.