JPS6353865B2 - - 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 the paint from the paint discharge hole provided on the peripheral surface of the paint supply pipe into the inside of the 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 the squeeze shaft, which has paint distribution passages provided at multiple locations in the axial direction that communicate this notch-like recess and the central paint supply passage, is connected and fixed to a support rod, and both ends of the squeeze shaft are slightly larger than the cylindrical parts. roller body supporting caps having a diameter of 1.5 mm are rotatably supported concentrically adjacent to both ends of the squeeze shaft, and both ends of a cylindrical core with paint outlet holes of the painting roller body fitted onto the squeeze shaft are It is supported by the pair of left and right supporting caps.

(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 screw holes are provided at both ends of the paint supply passage 4. The parts 6a and 6b are formed concentrically. Therefore, in this squeeze shaft 1, as shown in the figure, a non-notched peripheral surface connecting the cylindrical portions 2a and 2b at both ends in the axial direction is left at a circumferentially intermediate position between 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 screw shaft portion 10 formed at its tip, and by screwing the screw hole portion 6a at one end of the squeeze shaft 1 into the screw 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 numerals 12 and 13 are caps for supporting the roller body, which are attached to the cylindrical portions 2 at both ends of the squeeze shaft.
Core support parts 12a, 1 with a slightly larger diameter than a, 2b
3b, and further larger diameter flange portions 12b, 13b. One cap 12 is rotatably supported between the screw shaft portion 10 of the squeeze shaft support member 8 and the cap positioning flange 14 such that the flange portion 12b is located on the far side from the screw shaft portion 10. The other cap 13 is rotatably supported by a cap support shaft 15 concentrically connected to the outer end threaded hole 6b of the squeeze shaft 1 via a threaded shaft 15a. 15b is a flange for preventing the cap from falling off;
15c is a photographing section for rotation operation.

16 is a roller body, and a paint outlet hole 17
It has a cylindrical core 18 having a large number of. The inner diameter of this cylindrical core 18 is the same as that of the core support portion 12 of the roller body support cap 12, 13.
It is configured to be slightly smaller in diameter than the diameters of a and 13a.

When assembling, with the cap support shaft 15 and cap 13 removed, the roller main body 16 is fitted onto the squeeze shaft 1 from the outer end side, and the inner end of the core 18 is fitted into the core support portion 12a of the cap 12. Pressure is applied in the axial direction until it abuts against the flange portion 12b to tightly fit and fix it. Next, the core support part 13a of the cap 13 is attached to the flange part 13b.
until the core 1 comes into contact with the outer end of the core 18.
Pressure is applied to the outer end of the cap 8 in the axial direction to tightly fit and fix the cap support shaft 15, and the screw shaft 15a of the cap support shaft 15 is screwed into the screw hole 6b of the squeeze shaft 1 from the center hole of the cap 13. A cap support shaft 15 is coupled to the outer end of the shaft 1, and the cap 13 is rotatably supported by the cap support shaft 15.

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 16 is
the roller body 1 through the support rod 7.
By reciprocating the roller body 16 along the surface 19 to be coated, the roller body 16 is moved to the squeeze shaft 1.
It is rotated reciprocatingly around and rolled on the surface 19 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 20 of the recessed portions 3a and 3b on the side in the rotational direction of the roller body due to friction with the rotating core 18, and flows through the paint outflow hole 17 passing through the corner 20. core 1
8 and is pushed out into the roller body 16. The paint inside the roller body 16 moves onto the surface 19 to be coated as the roller body 16 rolls, and forms a coating film on the surface 19 to be coated.

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. Furthermore, 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.

(Operations and Effects of the Invention) The paint pressure-feeding type painting roller of the present invention can be implemented, used, and used as described above, and has a cylindrical portion left at both ends on the circumferential surface of the cylindrical body. A notch-like recess is formed along the axial direction while leaving the non-notched peripheral surface that connects the cylindrical portions at both ends in the axial direction, and this notch-like recess communicates with the central paint supply passage. By using a squeeze shaft with paint distribution passages provided at multiple locations in the axial direction, even when using a highly viscous paint, as long as the paint is fed into the notch-shaped recess, it can easily connect to the core of the roller body. The relative rotation with the squeeze shaft allows the paint in the recess to be automatically scraped out toward the roller body. 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.

Furthermore, according to the configuration of the present invention, the cylindrical portions at both ends of the squeeze shaft are close to the inner circumferential surface of the roller main body core, and it is possible to suppress the paint from moving outward from these portions toward the cap side. Therefore, 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 the drawing]

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, 6a, 6b... Threaded hole part, 7... Support rod also used as paint supply pipe , 8... squeeze shaft support member, 10, 15a... screw shaft part,
12, 13...Roller body support cap, 15
...Cap support shaft, 16...Roller body, 17...
Paint outflow hole, 18...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. A cap support shaft 15 is connected and fixed to the support rod 7 via a squeeze shaft support member 8, and is connected to the squeeze shaft support member 8 and the cap support shaft 15 protruding from the other end of the squeeze shaft 1.
A cylindrical core 18 with a paint outlet hole of a coating roller body 16 which rotatably supports roller body supporting caps 12 and 13 having a slightly larger diameter than the cylindrical parts 2a and 2b and is fitted onto the squeeze shaft 1. A paint pressure-feeding type painting roller having both ends supported by the pair of left and right supporting caps 12 and 13.