JPS6353866B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a paint pressure-feeding coating roller suitable for coating highly viscous paint.

(Prior art and its problems) In a conventional paint pressure-feeding type painting roller, the roller body is rotatably supported by a small-diameter paint supply pipe that also serves as a pivot shaft for the roller body, and the paint is supplied to the paint supply pipe. Supplying paint from a paint discharge hole provided on the peripheral surface of the paint supply pipe into the inside of a cylindrical core with paint outlet holes of the roller body, that is, into the annular space between the paint supply pipe and the core, The paint in this annular space was configured to flow out to the periphery of the roller body from the paint outflow holes in the core.

In such a conventional paint pressure-feeding type painting roller, when a highly viscous paint is used, the annular space inside the core is filled with the paint, and then the paint is pushed out from the paint outlet hole of the core by the paint supply pressure. Therefore, it is necessary to sufficiently increase the paint supply pressure. Furthermore, since the annular space, which has a large volume, is filled with paint and remains, when using a two-component reactive curing paint, there is a risk that a large amount of paint will stay inside the roller body and harden. Post-processing requires a lot of effort and time.

(Means for Solving the Problems) The present invention provides a paint pressure-feeding type painting roller that can solve the conventional problems as described above. , forming a notch-like recess along the axial direction with the cylindrical portions left at both ends and the non-notched peripheral surface connecting the cylindrical portions at both ends in the axial direction;
One end of a squeeze shaft, which has paint distribution passages provided at a plurality of locations in the axial direction to communicate this notch-shaped recess and a central paint supply passage, is connected and fixed to a support rod, and a cylindrical cylinder on the support rod side of the squeeze shaft is connected and fixed to a support rod. A cap for preventing the roller body from falling off is concentrically and rotatably supported on the outside of the roller body, and the cap is fitted onto the squeeze shaft so that both ends are rotatably supported by the cylindrical portion. The open end of the cylindrical core with holes is connected to the locking cap.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

Reference numeral 1 denotes a squeeze shaft, in which notch-like recesses 3 are formed on the circumferential surface of a cylindrical body along the axial direction on both sides in the diametrical direction with cylindrical portions 2a and 2b remaining at both ends.
a, 3b, and a plurality of paint distribution passages 5 are provided in the axial direction to communicate the notch-like recesses 3a, 3b with the central paint supply passage 4, and one end of the paint supply passage 4 is provided with a screw hole. The portion 6 is formed concentrically. Therefore, this squeeze shaft 1 has cylindrical parts 2 at both ends as shown in the figure.
A non-notched peripheral surface that connects a and 2b in the axial direction is left at an intermediate position in the circumferential direction of the notched recesses 3a and 3b. Reference numeral 7 denotes a support rod which also serves as a paint supply pipe, one end of which is connected with a squeeze shaft support member 8 at right angles, and the other end of which is provided with a handle connection portion 9 which also serves as a paint supply pipe. The squeeze shaft support member 8 has a threaded shaft portion 10 formed at its tip, and by screwing the threaded hole portion 6 at one end of the squeeze shaft 1 into the threaded shaft portion 10, the squeeze shaft 1 can be moved in one direction. Supported by holding. In this supported state of the squeeze shaft 1, the support member 8 is provided with a passage 11 that communicates the internal passage 7a of the support rod 7 which also serves as the paint supply pipe with the paint supply passage 4 of the squeeze shaft 1. .

Reference numeral 12 denotes a cap for preventing the roller body from falling off, which is attached to the cylindrical portions 2a at both ends of the squeeze shaft.
2b, and a tapered core coupling screw shaft portion 12a with a slightly larger diameter than that of the squeeze shaft support member 8, and a flange portion 12b with an even larger diameter. , the flange portion 12b is rotatably supported so as to be located on the far side from the screw shaft portion 10.

14 is a roller body whose one end 14a is closed by a blind stopper 15, and is provided with a cylindrical core 17 having a large number of paint outlet holes 16. The inner diameter of this cylindrical core 17 is equal to the core connecting threaded shaft portion 12a of the roller body retaining cap 12.
It is constructed to be slightly smaller than the diameter of the

When assembling, the roller body 14 is fitted into the squeeze shaft 1 from its open end side,
Both ends of the core 17 are rotatably supported by the cylindrical parts 2a and 2b at both ends of the squeeze shaft 1, and the inner end of the core 17 is attached to the core coupling threaded shaft part 12a of the cap 12 as shown in FIG. Screw it in the axial direction until it abuts against the flange portion 12b, and screw it in place by self-tapping.

In use, paint is pumped into the central paint supply passage 4 of the squeeze shaft 1 via the support rod 7 which also serves as a paint supply pipe. The paint is pushed out from inside the paint supply passage 4 via the paint distribution passage 5 into the cutout-like recesses 3a and 3b. In this state, the fourth
As shown in the figure, the roller body 14 is
the roller body 1 through the support rod 7.
By reciprocating the roller body 14 along the surface 18 to be coated, the roller body 14 is moved to the squeeze shaft 1.
The roller is rotated reciprocatingly around the surface 18 and rolled on the surface 18 to be coated.

Notch-shaped recess 3 of the squeeze shaft 1
The paint sent into the interiors a and 3b is pressed against the corner part 19 of the recessed parts 3a and 3b on the side in the rotational direction of the roller body due to friction with the rotating core 17, and the paint flows through the corner part 19 through the paint outflow hole. 15 and passes through the core 17 to the roller body 14
It will be pushed inside. Roller body 14
The paint inside moves onto the surface to be painted 18 as the roller main body 14 rolls, forming a coating film on the surface to be painted 18 .

In addition, in the above embodiment, there are two notch-like recesses 3.
a and 3b were formed on the squeeze shaft 1, but
It may be one, or it may be three or more. Further, although the bottom surface of the notch-like recess is a flat surface, it can also be a concave curved surface or a convex curved surface. Furthermore, the central paint supply passage 4 of the squeeze shaft is connected to the roller body 14.
The end on the blind stopper 15 side may be closed.

Further, the method of coupling the roller body retaining cap 12 and the core 17 of the roller body 14 is not limited to the above embodiment. For example, methods such as screwing a small screw onto the cap 12 from the outside of the core 17 or inserting a pin may also be used.

(Operations and Effects of the Invention) The paint pressure-feeding type coating roller of the present invention can be implemented and used as described above.
Forming a notch-like recess along the axial direction on the circumferential surface of the cylindrical body, leaving cylindrical portions at both ends and leaving the non-notched circumferential surface that connects the cylindrical portions at both ends in the axial direction; By using a squeeze shaft in which a plurality of paint distribution passages are provided in the axial direction to communicate the notch-shaped recess and the central paint supply passage, even when using a highly viscous paint, the cut-out recess can be easily maintained. Once the paint is fed into the recess, the paint in the recess can be automatically scraped out toward the roller body by relative rotation between the core of the roller body and the squeeze shaft. Therefore, even if the paint supply pressure is low, a highly viscous paint can be reliably supplied into the roller body and good coating can be performed.

In addition, the paint supplied into the notch-like recess can be used up to the end, so even if it is a two-component reaction-curing type paint, a large amount of paint can be stored in the core of the roller body after work, unlike conventional paints. This also eliminates the fear that the paint will harden and remain.

Moreover, according to the configuration of the present invention, a roller body with one end closed is used, and both ends of the roller body core are rotatably supported by the cylindrical portions at both ends of the squeeze shaft, thereby preventing the roller body from coming off the squeeze shaft. Since this is prevented by the rotatable cap provided adjacent to one end of the squeeze shaft, the number of parts is extremely reduced and the construction can be made at low cost. Furthermore, since the squeeze shaft cylindrical portion on the cap side is close to the inner circumferential surface of the roller main body core, the paint is prevented from moving outward from this portion toward the cap side.
Leakage of paint from between the cap and the core of the roller body, between the shaft portion that rotatably supports the cap, and the cap, etc. can be eliminated or minimized.

[Brief explanation of drawings]

Figure 1 is a vertical front view, Figure 2 is a perspective view of the squeeze shaft, Figure 3 is an enlarged vertical front view of the main parts,
FIG. 4 is a longitudinal sectional side view showing the main parts in a state of use. DESCRIPTION OF SYMBOLS 1... Squeeze shaft, 2a, 2b... Cylindrical part, 3a, 3b... Notch-like recessed part, 4... Paint supply passage, 5... Paint distribution passage, 6... Threaded hole part, 7... Support rod also used as paint supply pipe, 8 ... Squeeze shaft support member, 10... Screw shaft for connecting squeeze shaft, 12... Cap for preventing the roller body from coming off,
12a...Tapered screw shaft for core connection, 14
... Roller body, 15 ... Blind plug, 16 ... Paint outflow hole, 17 ... Cylindrical core.

Claims (1)

[Claims] 1 Cut along the axial direction on the circumferential surface of the cylindrical body, leaving the cylindrical parts 2a, 2b at both ends, and leaving the uncut circumferential surface that connects the cylindrical parts 2a, 2b at both ends in the axial direction. One end of the squeeze shaft 1 is formed by forming cutout-like recesses 3a and 3b and providing paint distribution passages 5 at a plurality of locations in the axial direction to communicate the cutout-like recesses 3a and 3b with the central paint supply passageway 4. The squeeze shaft support member 8 is connected and fixed to the support rod 7, and the squeeze shaft support member 8 rotatably supports a roller body retaining cap 12 concentrically with the squeeze shaft 1. by fitting the ends into the cylindrical parts 2a and 2b.
This paint pressure-feeding type painting roller is constructed by connecting the open end of a cylindrical core 17 with a paint outlet hole to the retaining cap 12 of a paint roller main body 14 with one end closed and rotatably supported by a paint roller body 14.