JPH0440073B2 - - 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) The present applicant has previously developed a paint pressure-feeding type painting roller that has a paint supply passage passing through between both ends, a scraping protrusion deviated in the axial direction, and a scraping protrusion. We have proposed a paint pressure-feeding type painting roller in which a paint roller body is rotatably fitted onto a squeeze shaft equipped with a paint distribution passage that communicates an adjacent recess with a paint supply passage. When implemented as a roller, when the roller is used in an upright position, the paint in the concave portion adjacent to the scraping convex portion accumulates on the lower end side of the roller.
There was a drawback that the supply of paint to the upper part of the roller was insufficient, resulting in uneven coating.

(Means for Solving the Problems) The present invention provides a paint pressure-feeding type painting roller that can solve the above-mentioned problems. In other words, the paint supply passage 5 passing through between both ends,
The scraping convex portions 4a, 4b that are warped in the axial direction, the concave portions 3a, 3b adjacent to the scraping convex portions 4a, 4b in the circumferential direction, and the paint supply passage 5 and the concave portions 3a, 3b are communicated with each other. In a paint pressure-feeding type painting roller in which a painting roller main body 14 is rotatably fitted onto squeeze shafts 1a to 1d provided with paint distribution passages 6, scraping convex portions of the squeeze shafts 1a to 1d are provided. Recessed portion 3 adjacent to 4a and 4b in the circumferential direction
It is characterized in that a and 3b are partitioned into a plurality of sections in the shaft length direction.

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

1a to 1d are squeeze shafts having the same structure, each having large-diameter shaft portions 2a and 2b at both ends, and formed by cutting both sides in the diametrical direction between the large-diameter shaft portions 2a and 2b along the axial direction. Recesses 3a, 3
b, scraping convex portions 4a and 4b formed along the axial direction by both recesses 3a and 3b, a paint supply passage 5 provided at the center so as to penetrate between both ends, and this paint supply passage 5; Both the recesses 3a,
3b, and large diameter openings 5a and 5b of appropriate length are formed at both ends of the paint supply passage 5. Further, positioning holes 24 are provided at two locations in the diametrical direction on the end face of one large diameter shaft portion 2a, and positioning protrusions are provided at two locations corresponding to the positioning holes 24 on the end face of the other large diameter shaft portion 2b. 25 is provided protrudingly.

Reference numeral 26 denotes a joint pipe, which extends between the large diameter opening 5b of the paint supply passage 5 in one squeeze shaft and the large diameter opening 5a of the paint supply passage 5 in the other squeeze shaft, which are adjacent to each other. The squeeze shafts are tightly fitted and fixed, concentrically connecting the squeeze shafts adjacent to each other, and at the same time allowing the respective paint supply passages 5 to communicate with each other.
At this time, the positioning protrusion 25 of one squeeze shaft fits into the positioning hole 24 of the other squeeze shaft, thereby preventing the respective squeeze shafts from rotating relative to each other.

Reference numeral 7 denotes a support rod which also serves as a paint supply pipe, and a squeeze shaft support member 8 is connected to one end of the support rod in a right-angled horizontal direction. A screw shaft portion 9 is formed at the tip of the squeeze shaft support member 8, and a thread groove that fits the screw shaft portion 9 is machined in the large diameter opening 5a at one end of the squeeze shaft 1a. By screwing the screw shaft portion 9 into the large-diameter opening 5a at one end of the squeeze shaft 1a, the squeeze shafts 1a to 1d connected as described above are supported in a cantilevered manner by the squeeze shaft support member 8. At the same time, the internal passage 7a of the support rod 7 which also serves as a paint supply pipe and the paint supply passage 5 of the squeeze shaft 1a are communicated via a passage 10 provided in the support member 8.

Reference numeral 11 denotes a rotary body for locking the roller body, which is rotatably supported by the squeeze shaft support member 8 in a rotatable manner concentrically with the screw shaft portion 9, and concentrically with the large diameter shaft portion 2a of the squeeze shaft 1a. The nut part 12 is loosely fitted into the nut part 12.

Reference numeral 13 denotes a cap that closes the free end of the paint supply passage 5 in the squeeze shaft 1d, and a plug portion 1 that is tightly fitted and fixed in the large diameter opening 5b.
3a, and a flange portion 13b having a slightly larger diameter than the large diameter shaft portion 2 of the squeeze shaft 1 and having an outer peripheral surface formed into an arcuate surface. This flange portion 13b has two holes 2 into which positioning protrusions 25 protruding from the end surface of the squeeze shaft 1b are fitted.
7 is provided.

14 is a roller body, and a paint outlet hole 15
A blind stopper 17 is fitted and fixed to one end of a paper tube 16 having a large number of paper tubes provided on its circumference, and a threaded ring is fitted to the other end to be screwed into the nut portion 12 of the rotary body 11 for locking the roller body. 18 are concentrically connected and fixed to a bottomed cylindrical core 19.

The surfaces 22 of the recesses 3a and 3b formed in the squeeze shafts 1a to 1d are formed into convex curved surfaces in a circumferential cross-sectional shape, as shown in FIG. A shallow groove 23 is formed along the axial direction at the center of the recessed surface 22, and the paint distribution passage 6 is bored using this groove 23 as a guide during the drilling operation.

When assembling, each squeeze shaft 1a~
1d are connected in the axial direction using the joint pipe 26 as described above, and the roller main body 14 is fitted into the squeeze shafts 1a to 1d from the open end side of the core 19, and the open end side of the core 19 is , is screwed to the nut portion 12 of the roller body locking rotating body 11 via the threaded ring 18, and the bottomed side is rotatably supported by the flange portion 13b of the cap 13. At this time, as shown in FIG.
It is desirable that the outer circumferential surface of the blind stopper 3b is configured to be close to the inner circumferential surface 17a of the cylindrical portion of the blind plug 17.

In use, paint is force-fed to the central paint supply passage 5 of the squeeze shafts 1a to 1d via the support rod 7 which also serves as a paint supply pipe. The paint is pushed out from within the paint supply passage 5 via the paint distribution passage 6 into the recesses 3a, 3b of each squeeze shaft 1a-1d. In this state, as shown in FIG. 4, the roller body 14 is pressed onto the surface to be painted 20,
The roller body 14 is connected to the surface to be painted 2 via the support rod 7.
0, the roller body 14 is rotated reciprocally around the squeeze shafts 1a to 1d and rolled on the surface 20 to be coated.

The paint sent out into the recesses 3a and 3b of the squeeze shafts 1a to 1d is transferred to the core 1.
Scraping convex portion 4 that rotates relative to 9
a, 4b to the corner portion 21 of the recesses 3a, 3b on the roller body rotation direction side, and the paint outlet hole 1 passes through the corner portion 21.
5, it passes through the paper tube 16 and is pushed out into the roller body 14. The paint inside the roller body 14 moves onto the surface to be painted 20 as the roller body 14 rolls, and forms a coating film on the surface to be painted 20 .

Further, large diameter shaft portions 2 adjacent to each other in the axial direction at the connection points of the squeeze shafts 1a to 1d
a and 2b serve as partition walls that partition the recesses 3a and 3b in the axial direction when looking at the entire squeeze shaft, so each squeeze shaft 1a to 1d
The paint supplied to the recesses 3a, 3b does not flow into the area of another squeeze shaft adjacent in the axial direction.

In the above embodiment, there are two recesses 3a, 3b (two scraping protrusions 4a, 4b) in the circumferential direction.
was formed on the squeeze shafts 1a to 1d, but
It may be one, or it may be three or more. Further, although the bottomed cylindrical core 19 is constructed by combining the paper tube 16, the cap 17, and the threaded ring 18, it can also be integrally molded with plastic sticks. Furthermore, although a plurality of squeeze shafts 1a to 1d are connected to form one squeeze shaft, one long squeeze shaft is used, and the large diameter shaft portions 2a at both ends are connected at appropriate intervals in the axial direction. ,2
It is also possible to form the same large-diameter shaft portion as b and partition the recesses 3a and 3b into a plurality of sections in the axial direction.

When using the joint pipe 26, the fifth
As shown in the figure, a retaining annular protrusion 26a with a serrated cross section is formed on the outer circumferential surface on both sides with the center as the boundary, so that it is firmly secured against the large diameter openings 5a and 5b in the paint supply passage 5 of the squeeze shaft. It can be configured so that it can be fitted and fixed to. Such a retaining annular protrusion having a sawtooth cross section can also be formed on the plug portion 13a of the cap 13.

(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.
By using a non-rotating squeeze shaft equipped with a scraping protrusion extending along the axial direction, even when using highly viscous paint, the roller body can be easily removed by feeding the paint into the recess adjacent to the protrusion. The relative rotation between the core and 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.

Moreover, according to the configuration of the present invention, the concave portion adjacent to the scraping convex portion of the squeeze shaft is partitioned into a plurality of sections in the length direction, so that even if the roller is used in an upright position, the paint supplied into the concave portion is The paint does not flow to the lower end of the roller and accumulate, and the paint is supplied almost evenly over the entire length of the roller body, making it easy to paint evenly. Furthermore, as in the embodiment, it is also possible to rotatably support the longitudinal intermediate portion of the cylindrical core of the roller body by the partition wall of the recess, and in this way, even if the roller is long, the roller The main body can be stably supported and rotated smoothly.

[Brief explanation of drawings]

Figure 1 is a vertical front view, Figure 2 is a perspective view of the squeeze shaft, joint pipe, and cap, Figure 3 is an enlarged vertical front view of the main parts, and Figure 4 is a vertical cross-section showing the main parts in use. FIG. 5 is a side view showing a modification of the joint pipe. 1a, 1b... Squeeze shaft, 2a, 2
b...Large diameter shaft part, 3a, 3b...Recessed part, 4a, 4
b...Convex portion for scraping, 5...Paint supply passage, 6
...Paint distribution passage, 7...Support rod that also serves as paint supply pipe, 8...Squeeze shaft support member, 9...
Squeeze shaft coupling screw shaft portion, 11... Rotating body for locking the roller body, 12... Nut portion, 1
3...cap, 14...roller body, 15...
...Paint outflow hole, 16...Paper tube, 17...Blind stopper, 1
8... Threaded ring, 19... Bottomed cylindrical core, 22... Concave surface, 24... Positioning hole,
25...Positioning protrusion, 26...Joint pipe.

Claims (1)

[Claims] 1. A paint supply passage 5 penetrating between both ends, scraping convex parts 4a, 4b that are warped in the axial direction, recesses 3a, 3b adjacent to the scraping convex parts 4a, 4b in the circumferential direction, and the paint supply passage. In a paint pressure-feeding type painting roller, a paint roller main body 14 is rotatably fitted onto a squeeze shaft 1a to 1d, which is provided with a paint distribution passage 6 that communicates a paint distribution passage 6 between scraping convex portions 4a of the squeeze shafts 1a to 1d;
A paint pressure-feeding type coating roller characterized in that recessed portions 3a and 3b adjacent to the recessed portion 4b in the circumferential direction are partitioned into a plurality of sections in the shaft length direction.