JPH07221Y2 - Exudative coating roller - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bleeding type coating roller for coating a surface to be coated while bleeding the coating material from an axial center portion of the roller toward an outer peripheral portion thereof.

[0002]

2. Description of the Related Art A conventional technique is shown in FIG. In FIG. 4, A is a bleeding type coating roller, and the shaft tube 2 is projected and fixed to the upper end of the support tube 1 for sending out the paint, and the discharge tube 3 is leftwardly fixed to the shaft tube 2. Fix it by protruding toward it. The discharge pipe 3 is cut out in the left-right direction at the outer periphery of an intermediate portion that leaves both left and right ends, and small-size discharge holes 4 are opened in the cut-out part 3a at predetermined intervals in the left-right direction. The shaft pin 5 is screwed into the left end of the discharge pipe 3 to close the left end of the discharge pipe 3. A cylindrical roller 8 is fitted on the outer circumference of the discharge pipe 3, and support caps 6, 7 having a diameter slightly larger than the left and right ends of the discharge pipe 3 are fitted and fixed on the left and right ends thereof, respectively. The shaft pin 5 is rotatably supported by the left end of the shaft pin 5 and the right end of the shaft tube 2 via. Roller 8 above
Is formed by fitting and fixing a water-permeable main body 8b such as sponge or felt on the outer circumference of a rigid cylindrical core 8a having a large number of small holes.

A discharge hose (not shown) of a paint pump is connected to the lower end of the support pipe 1 to supply the paint to the support pipe 1. The paint supplied to the support pipe 1 flows through the discharge pipe 3 through the shaft pipe 2 and is discharged from the discharge hole 4 of the discharge pipe 3 to the space (a) between the cutout portion 3a and the cylindrical core 8a. To fill the space (a), flow through the main body 8b from the cylindrical core 8a, and exude to the surface of the main body 8b. As a result, the roller 8 is brought into contact with the surface to be coated (not shown) to roll,
The paint exuded on the surface of the main body 8b is attached to the surface to be coated.

[0004]

In the conventional device described above, since the discharge hole 4 formed in the discharge pipe 3 is opened in the radial direction, the paint discharged from the discharge hole 4 is orthogonal to the inner surface of the cylindrical core 8a. A collision is made from the direction, and a large amount of this colliding part penetrates toward the main body 8b as compared with other parts. For this reason, there is a drawback that the paint that exudes from the outer surface of the main body 8b becomes non-uniform, the paint that adheres to the coated surface becomes non-uniform, and the color of the coated surface becomes dark and light. Particularly, in the case of a paint having a low viscosity, the above-mentioned drawbacks become remarkable. Further, the opening amount of the discharge hole 4 cannot be changed, and it is necessary to manufacture various types of the bleeding type coating roller A corresponding to the viscosity of the coating material, which has a drawback that productivity becomes poor. An object of the present invention is to obtain a novel bleeding type coating roller that solves the above drawbacks.

[0005]

The present invention is configured as follows to achieve the above object. That is, a discharge pipe having a closed end and a plurality of discharge holes formed in a peripheral wall is connected to an end portion of a support pipe that sends out paint, and a cylindrical water-permeable roller is fitted to the discharge pipe. Insert a cap on both ends of the roller to close the ends,
In a bleeding type coating roller in which an axial center portion of the cap is rotatably supported at both ends of the discharge pipe, a nozzle tip is detachably provided in a discharge hole of the discharge pipe, and a jet port of the nozzle tip is a roller. The configuration is such that it is oriented in a direction substantially parallel to the rotation axis of the.

[0006]

Since the present invention is configured as described above, the paint flowing from the supporting pipe toward the discharge pipe is discharged from the nozzle tip of the discharge pipe into the space between the discharge pipe and the roller. It jets out in a direction substantially parallel to the rotation axis of the roller and does not directly collide with the inner surface of the roller.
The pressure of the paint filled in the space flows toward the outer surface while the pressure acts substantially evenly on the entire inner surface of the roller.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II, and FIG. 3 is a sectional view corresponding to FIG. 2 showing another embodiment. In FIG. 1, reference numeral 10 denotes an exuding type coating roller, which is an upper end portion (tip portion) of the support tube 11.
The shaft tube 12 is projected and fixed to the left side of the shaft tube 12, and the disk-shaped support cap 13 is rotatably fitted to the base part (right end) of the small-diameter shaft part 12a formed in the left part of the shaft tube 12. Further, the discharge pipe 14 is extended leftward and fixed to the left portion of the shaft portion 12a by screwing. The discharge pipe 14 is made of a plastic material and has left and right end portions 14a and 14b formed in a cylindrical shape, and an intermediate portion 14c is formed in a hollow triangular prism shape as shown in FIG. A discharge hole (reference numeral omitted) penetrating therethrough is formed at an interval in the axial direction, and a metal nozzle tip 15 is projected outward in the radial direction into the discharge hole to be detachably fixed (press fitted).

The nozzle tip 15 has a structure shown in FIG.
As shown in, a T-shaped ejection passage 16 is formed. The jet passage 16 extends outward in the radial direction from the axial center portion of the discharge pipe 14, and then the jet outlet 16a is moved in the left-right direction, that is, the discharge pipe 1.
The opening is made in the direction parallel to the axis of 4. The passage area of the ejection passage 16 is set according to the viscosity of the paint.

A cylindrical roller 20 is fitted on the outer circumference of the discharge pipe 14, the right end portion of which is press-fitted into the support cap 13, and the shaft portion 12 of the shaft pipe 12 is inserted through the support cap 13.
It is rotatably supported on a. Further, another disc-shaped support cap 18 is fitted and fixed to the left end portion of the roller 20, and the shaft center portion of this support cap 18 is rotatably fitted to a shaft pin 17 screw-connected to the left end portion of the discharge pipe 14. To combine. The right end of the shaft pin 17 is screwed into the left end of the discharge pipe 14 to close the left end of the discharge pipe 14, and a large-diameter flange 17a is formed at the left end, and the flange 17a supports the support. Prevent the cap 18 from coming off. Roller 2 above
0 is a rigid cylindrical core 20a in which a large number of small holes are formed.
Water-permeable main body 2 such as sponge or felt on the outer circumference
0b is fitted and fixed. In FIG. 1, 19 is a hose joint attached to the lower end of the support tube 11,
The support pipe 11 is connected to a discharge hose (not shown) of a paint pump.

FIG. 3 shows a second embodiment. In this structure, the intermediate portion 14c of the discharge pipe 14 is formed into a hollow triangular prism having a diameter smaller than that of the first embodiment, and the cylindrical core 2 of the roller 20 is formed.
0a is formed in a ring shape, and the intermediate portion 14
A metal nozzle tip 15 similar to that of the first embodiment described above is projected outward in the radial direction on each surface of c and is detachably fixed (press-fitted).

According to the above-described embodiment, the paint supplied from the paint pump to the support pipe 11 passes through the shaft pipe 12 and the discharge pipe 1.
Nozzle tip 15 which is circulated in No. 4 and attached to the discharge pipe 14.
From the intermediate portion 14c and the cylindrical core 20a to the space portion (a), and after filling the space portion (a), the cylindrical core 20a
Circulates in the main body 20b and exudes to the surface of the main body 20b. As a result, the roller 20 is coated on the surface to be coated (not shown).
When it is brought into contact with and is rolled, the paint exuded on the surface of the main body 20b adheres to the surface to be coated. In this case, the coating material ejected from the ejection port 16a of the nozzle tip 15 ejects into the space (a) in a direction substantially parallel to the rotation axis of the roller 20, and does not directly collide with the inner surface of the roller 20. . For this reason, the pressure of the paint filled in the space (a) flows toward the outer surface of the roller 20 while acting substantially evenly on the entire inner surface of the roller 20, and evenly exudes from the entire surface of the main body 20b. It will adhere evenly to the surface. The nozzle tip 15 attached to the discharge pipe 14 is
In the case of coating material having low viscosity, the ejection passage 16 having a small cross-sectional area is formed, and in the case of coating material having high viscosity, the ejection passage 16 having a large cross-sectional area is appropriately replaced. .

[0012]

As is apparent from the above description, according to the present invention, the nozzle tip is detachably provided in the discharge hole of the discharge pipe, and the paint is applied to the roller in the space between the discharge pipe and the roller by the nozzle tip. Since the ink is jetted in a direction substantially parallel to the rotation axis of the roller, the paint can be exuded from the outer surface of the roller substantially uniformly, and the paint can be evenly applied to the coated surface. In addition, by exchanging the nozzle tips having different cross-sectional areas of the ejection passage, it is possible to smoothly apply the paints having different viscosities with one coating roller.

[Brief description of drawings]

FIG. 1 is a sectional view of a coating roller showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view corresponding to FIG. 2 showing another embodiment.

FIG. 4 is a sectional view of a coating roller showing a conventional example.

[Explanation of symbols]

 10 Coating Roller 11 Support Pipe 12 Shaft Pipe 12a Shaft 13 Support Cap 14 Discharge Pipe 14a Left End 14b Right End 14c Intermediate 15 nozzle tip 16 Spout 16a Spout 17 Shaft Pin 17a Flange 18 Support Cap 19 Hose Joint 20 Roller 20a Mainly cylindrical core 20b

Claims (1)

[Scope of utility model registration request] 1. A discharge pipe having a distal end closed and a plurality of discharge holes formed in a peripheral wall is connected to an end portion of a support pipe for sending out paint, and a water-permeable member formed in a cylindrical shape in the discharge pipe. In the exudation type coating roller in which a roller is fitted and a cap for closing both ends of the roller is provided, and an axial center portion of the cap is rotatably supported at both ends of the discharge pipe, the discharge pipe Nozzle tip is removably provided in the discharge hole of, and the ejection port of the nozzle tip is directed in a direction substantially parallel to the rotation axis of the roller.