JPS5830597Y2 - coating machine - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a coating machine for coating molds and the like.

Conventional mold applicators include those that directly spray the mold using air pressure and those that force-feed and spray the mold using the power of a pump.

In the former case, the structure is extremely simple because the coating is applied directly with air, but air bubbles are drawn into the coating, forming a porous coating, which poses problems in terms of strength. It easily scatters and worsens the working environment.

Furthermore, since it is mechanically difficult to immediately transport the coating mold back from the nozzle to the original tank at the end of the coating operation, general coating molds that have a high sedimentation tendency tend to clog near the nozzle.

Furthermore, with air from a normal compressor, 5 kg/cm
The spray pressure of 2 to 7 kg/cm"H is not sufficient for the coating mold.

In the latter case, a piston-type pump with a ball valve is usually used, but the coating mold tends to settle in the valve case, which can cause malfunctions and the valve part is severely worn, lacking durability. .

In addition, the coating mold is less likely to scatter than the former, but like the former, this type of pump does not allow backflow, so it is necessary to clean the coating mold feeding path between the pump and the nozzle when the coating process is completed, and the coating process is difficult. The quality is poor and there is a lot of loss of paint.

The present invention aims to improve the latter type of mold applicator, which uses a pump to forcefully feed the mold, and to solve the above-mentioned drawbacks.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A mold applicator according to the present invention will be described below with reference to drawings showing embodiments.

In FIG. 1, 1 is a pipe having a discharge nozzle 2 at one end, and 3 is a nozzle reversing handle.

A mold feeding hose 5 is connected to the other end of the pipe 1 via a fixed nipple 4 and communicates with a mold tank (not shown).

As shown in FIG. 2, a flexible tube 6 for pumping the coating mold is interposed in the middle of the hose 5, and the coating mold is pumped through the tube 6 by a tube pump 7.

8 is a roller that repeatedly presses and rotates the tube 6 on the receiving surface 9a of the pedestal 9 along the length direction, and a plurality of rollers are freely rotatable at equal intervals on the circumferential side of the disc-shaped roller plate 10. The roller plate 10 is fixed to a shaft that can be rotated in forward and reverse directions by a drive motor such as an electric motor or an air motor (not shown).

The receiving surface 9a is formed in an arcuate shape along the rotation locus of the roller 8, and has a length spanning between adjacent rollers 8 so that the coating mold being pumped does not flow backward through the tube 6.

Reference numeral 11 denotes a nipple that connects the tube 6 and the hose 5 connected to both ends thereof and fixes it on the pedestal 9.

The material of the roller 8 and the receiving surface 9a may be metal, rubber, or plastic, and the material of the tube 6 may be rubber or plastic, but durable neoprene rubber or silicone rubber is more preferable.

Although three rollers 8 are shown in the figure, it is sufficient to use a plurality of rollers, and depending on the diameter of the roller 8 itself, the diameter of the tube 6, and the size of the roller plate 2, the number can be about 2 to 10. The higher the number, the smaller the pulsation of the coating mold pressure feeding.

As shown in FIG. 3, the hoses 5 are connected to a plurality of pipes, each with a tube 6 for pressurizing the coating mold in the middle, and are arranged in parallel on the shaft 11 as shown in FIGS. 4 and 5. The plurality of rollers 8 rotating as a set between the roller plates 10
A tube pump 7' may be provided in which tubes 6 are arranged in a plurality of rows and each tube 6 is pressed and rotated along the parallel receiving surfaces 9a of the pedestal 9.

In this case, if the rollers 8 in each row are installed with a phase difference in position, the pulsation of pumping can be reduced in the same way as increasing the number of rollers 8 in a single row, and the surface also increases pumping efficiency. and the useful life of the tube 6 can be extended.

The hose 5 has a plurality of tubes 6 interposed therein.
may be connected to this hose 5, respectively.

The coating mold applicator according to the present invention can be implemented as described above, and since the coating mold is fed under pressure using a tube pump, the coating machine is more efficient than a machine that uses a valve or the like in the coating mold feeding route. There is no problem due to sedimentation of the mold, high pressures can be obtained for both the suction pressure and the application pressure of the coating mold, and theoretically the pressure can be increased to the pressure resistance of the tube.

In addition, since the rollers can rotate in the opposite direction, the coating remaining in the feeding route can be easily returned to the coating tank after the coating process is completed, eliminating coating loss and cleaning the feeding route. Almost no work is required, and no sedimentation occurs due to remaining coating mold.

Furthermore, the only part that wears out due to the rollers is the tube, making it easy and economical to replace.

[Brief explanation of the drawing]

Fig. 1 is a side view of the main part showing an embodiment of the present invention, Fig. 2 is a partially cutaway side view of another main part, Fig. 3 is a side view of the main part showing another embodiment, and Fig. 4 is a side view of the main part showing an embodiment of the present invention. Another partially cutaway front view of the main part, FIG. 5 is a side view of the main part of FIG. 4. 1... Vibrator, 2... Discharge nozzle, 5
...Hose, 6...Tube, 7,7
′...Tube pump, 8...Roller, 9a...Socket surface, 10...Roller play I.

Claims (1)

[Scope of utility model registration request] In a mold applicator having a mold discharging nozzle and a pressure pump that feeds the mold to the nozzle, the pressure pump has a flexible tube interposed in the middle of the mold feeding path and a circular orbit. A mold applicator comprising a tube pump that is rotatable in forward and reverse directions and that is equipped with a roller that moves the flexible tube by pressing it onto an arcuate receiving surface along the length of the flexible tube.