JPS6129507Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a powder coating device, and particularly to a coating device that coats a member to be coated with resin powder in a stationary (dead) state.

The powder coating device of the present invention includes a resin powder coating tank in which a resin powder made floating and fluidized by an air flow is placed, and a layer of resin powder that is immersed except for the upper part in the floating and fluidized resin powder layer. a rotating ring having a continuous groove extending in the circumferential direction at the center of its outer periphery, and a member to be coated passing through the groove portion at the top of the rotating ring at a speed equal to the circumferential speed of the rotating ring. The method is characterized by comprising a mechanism for guiding the member to be coated.

Embodiments of the present invention will be described below with reference to the drawings.

In the present invention, the lower part of the resin powder coating tank 1 is divided into upper and lower parts by a partition plate 2, and pressurized air of about 1.5 atmospheres, for example, is introduced into the divided lower chamber through the pressurized air introduction hole 3. and
A plurality of through holes 4 are formed in the partition plate 2, and the through holes 4 are closed with an air permeable filter 5 such as paper.
Epoxy resin powder 6 is placed in the upper chamber of the resin powder tank 1.
is put into a floating and fluid state by a pressurized air flow introduced from the lower chamber through the filter 5, and the resin powder coating tank 1 is made to float and flow.
Vibration is applied to the epoxy resin powder 6 by a vibrator 7 attached to the epoxy resin powder 6.

A rotary ring 8 is rotatably provided in the upper chamber of the resin powder tank 1 and is rotated by a motor 9 fixed to the resin powder tank 1. The epoxy resin powder 6 is immersed in the floating, fluid state of the epoxy resin powder 6.

Furthermore, a continuous groove 10 extending in the circumferential direction is formed in the center of the outer periphery of the rotating ring 8, and a preheating chamber 12, which is suspended from a conveyor 11 and moves, passes through the groove 10 at the top of the rotating ring 8. The coated material 13 such as a resistor or a capacitor is made to pass through the coated member 13 such as a resistor or a capacitor, and the passing speed thereof is made to match the circumferential speed of the outer circumferential portion of the rotary wheel 8.

Conventionally, when coating the member 13 to be coated with the resin powder 6, the member 13 to be coated is immersed in the resin powder 6 in a floating, flowing state. In addition, since it is not possible to do it accurately, during coating, the floating and flowing of the resin powder 6 is temporarily stopped, the member to be coated 13 is immersed in a dead state, and after the coating is completed, the resin powder 6 is made to float and flow again. Not only is it difficult to perform the work continuously, but also there is a drawback that rubbing occurs between the coated member 13 and the resin powder layer in the dead state when the member 13 is taken in and out, and it is difficult to maintain a constant parting. Ta.

However, in the present invention, even if the resin material 6 in the resin powder tank 1 remains in a floating and fluid state, the groove 10 carried to the top by the rotation of the rotary wheel 8
The resin material 6' inside is not in a floating or fluid state, but in a so-called dead state, through which the member to be coated 13 passes continuously, and the moving speed thereof and the moving speed of the resin material 6' are, for example, 2.4 m. /second, so coating can be performed with an extremely high accuracy of, for example, 0.5 mm, without causing rubbing on the member 13 to be coated, and there is a great advantage that the work can be carried out continuously without interruption. be.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of the device of the present invention, and FIG. 2 is a longitudinal sectional side view thereof. 1... Resin powder coating tank, 2... Partition plate,
3... Pressurized air introduction hole, 4... Passing hole, 5... Breathable filter, 6... Epoxy resin powder, 6'...
... Resin material, 7 ... Vibrator, 8 ... Rotating wheel, 9 ... Motor, 10 ... Groove, 11 ... Conveyor, 12 ... Preheating chamber, 13 ... Member to be coated.

Claims (1)

[Scope of utility model registration request] A resin powder coating tank in which resin powder is placed in a floating and fluidized state by an air flow, and its outer periphery is immersed in the floating and fluidized resin powder layer except for the upper part thereof. A rotating ring with a continuous groove extending circumferentially in the center;
A powder coating device comprising a mechanism for guiding the member to be coated so that the coating member passes through a groove portion at the top of the rotating ring at a speed equal to the circumferential speed of the rotating ring.