JPS61249566A - Paint force-feed system coating roller - Google Patents

Abstract

PURPOSE:To surely supply a highly viscous paint into the main body of a roller and to carry out excellent painting even when the paint supply pressure is low by separating a recessed part adjacent to a protruded part for scraping out of a squeeze shaft into plural sections in the lengthwise direction. CONSTITUTION:With respect to a paint force-feed system coating roller suitable for coating a highly viscous paint, recessed parts 3a and 3b adjacent to protruding parts 4a and 4b for scraping out of a squeeze shaft 1a-1d are separated into plural sections in the lengthwise direction. Accordingly, even when the roller is vertically used, the paint supplied into the recessed parts 3a and 3b flows to the lower end side of the roller without accumulation, the paint is almost uniformly supplied over the whole length of the roller main body and even coating can be easily carried out.

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 previously developed a paint pressure-feeding type painting roller that includes a paint supply passage passing through between both ends, a scraping protrusion along the axial direction, and a scraping protrusion. A paint pressure-feeding type painting roller has been proposed in which a painting roller body is rotatably fitted onto a squeeze shaft having a paint distribution passage that communicates an adjacent recess with the paint supply passage. When used 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 of the roller, resulting in insufficient supply of paint to the upper portion of the roller, resulting in uneven coating. was there.

(Means for Solving the Problems) The present invention provides a paint pressure-feeding type coating roller that can solve the above-mentioned problems, and has the following characteristics:
Painting on a squeeze shaft that has a paint supply passage passing through between both ends, a scraping convex along the axial direction, and a paint distribution passage that communicates the paint supply passage with a concave adjacent to the scraping convex. In the paint-feeding type painting roller, which has a paint roller body rotatably fitted onto the outside, the concave portion adjacent to the scraping convex portion of the squeeze shaft is partitioned into a plurality of sections in the length direction.

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

13 to 1d are squeeze shafts having the same structure, including large diameter shaft portions 23.2b1 at both ends, large diameter shaft portions 2a,
Recesses 3a, 3b formed by warping and notching both diametrical sides in the axial direction between 2b, both recesses 3a, 3
A scraping convex portion 4 formed along the axial direction by b
a, 4b, a paint supply passage 5 provided at the center so as to penetrate between both ends, and this paint supply passage 5 and both recesses 3;
a.

3b, and a large diameter opening 5a of an appropriate length at both ends of the paint supply passage 5.
5b is formed. Furthermore, positioning holes 24 are provided at two locations in the diametrical direction on the end surface of one large diameter shaft section 2a, and positioning holes 24 are provided at two locations corresponding to the positioning holes 24 on the end surface of the other large diameter shaft section 2b. A protrusion 25 is provided to protrude.

Reference numeral 26 denotes a joint pipe which is tightly connected between the large diameter opening 5b of the paint supply passage 5 in one squeeze shaft adjacent to each other and the large diameter opening 5a of the paint supply passage 5 in the other squeeze shaft. The squeeze shafts are fitted and fixed to concentrically connect the squeeze shafts adjacent to each other, and at the same time, allow the respective paint supply passages 5 to communicate with each other. At this time, the positioning protrusion 25 of one squeeze shaft is connected to the positioning hole 25 of the other squeeze shaft.
to prevent each squeeze shaft 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 threaded shaft portion 9 is formed at the tip of the squeeze shaft support member 8, and a threaded groove that fits the threaded 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 by the squeeze shaft support member 8 in a cantilevered manner. In addition, the internal passage 7a of the support rod 7 which also serves as the paint supply pipe and the paint supply passage 5 of the squeeze shaft 1a are provided in a passage 10 provided in the support member 8.
communicated via.

Reference numeral 11 denotes a rotary body for locking the roller body, which is rotatably supported by the squeeze shaft support member 8 so as to be rotatable concentrically with the screw shaft portion 9.
It is provided with a NAND portion 12 that loosely fits concentrically into the large diameter shaft portion 2a of a.

Reference numeral 13 denotes a cap that closes the free end of the paint supply passage 5 in the squeeze shaft 1d, and includes a plug portion 13a that is tightly fitted and fixed in the large diameter opening 5b, and a cap that closes the free end of the paint supply passage 5 in the squeeze shaft 1d. The flange portion 13b has a slightly larger diameter than the portion 2b and has an outer peripheral surface formed into an arcuate surface. This flange portion 13b is provided with two holes 27 into which positioning projections 25 protruding from the end surface of the squeeze shaft 1b are fitted.

Reference numeral 14 denotes a roller body, in which a blind stopper 17 is fitted and fixed to one end of a paper tube 16 having a large number of paint outlet holes 15 on its circumference, and a blind stopper 17 is fitted and fixed to the other end of the paper tube 16, which is connected to the rotary body 11 for locking the roller body. It is provided with a bottomed cylindrical core 19 to which a threaded ring 18 that is screwed into a nut portion 12 is concentrically connected and fixed.

recesses 3a formed in squeeze shafts 1a to 1d;
As shown in FIG. 4, the surface 22 of 3b is formed into a convexly curved surface in the circumferential cross section, and a shallow groove 23 is formed along the axial direction at the center of this recessed surface 22. The paint distribution passage 6 is bored using this groove 23 as a guide during drilling work.

When assembling, each squeeze shaft 13 to 1d is connected in the axial direction using the joint pipe 26 as described above, and the roller body 14 is fitted to the squeeze shaft 1a to 1d from the open end side of the core 19. The open end side of the core 19 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 connected to the flange portion 13b of the camp 13. Rotatably supported. At this time, the third
As shown in the figure, it is desirable that the outer peripheral surface of the cap flange portion 13b be configured to be close to the inner peripheral surface 17a of the cylindrical portion of the blind stopper 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 supplied from the paint supply passage 5 to each squeeze shaft 1a to 1d via the paint distribution passage 6.
is pushed out into the recesses 3a and 3b. In this state, the roller body 14 is pressed onto the surface to be painted 20 as shown in FIG.
By moving the roller body 1 back and forth along the
4 is rotated reciprocally around the squeeze shafts 1a to 1d and transferred over the surface to be painted 20.

The recesses 3a of the squeeze shafts 1a to 1d,
The paint sent into ab is removed by scraping convex portions 4a and 4b that rotate relative to the core 19, and is removed from the corners 2 of the concave portions 3a and 3b on the side in the rotational direction of the roller body.
1, and is pushed out from the paint outlet hole 15 passing through the corner portion 21, through the paper tube 16, and 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 moves, and forms a coating film on the surface to be painted 20 .

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

In the above embodiment, there are two recesses 3a, 3 in the circumferential direction.
b (Two scraping convex portions 4a, 4b) are formed on the squeeze shafts 1a to 1d, but one or three scraping convex portions may be formed.
In addition, the bottomed cylindrical core 19 may be connected to the paper tube 16.
, the cap 17, and the threaded ring 18 are combined, but they can also be integrally molded from plastic. 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 placed 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, as shown in FIG. 5, an annular protrusion 26a for preventing removal with a sawtooth cross section is formed on the outer circumferential surface of both sides of the center as a boundary, and the paint supply passage 5 of the squeeze shaft is formed. It can be constructed so that it can be firmly fitted and fixed to the large diameter openings 5a and 5b in the.

Such an annular projection for preventing removal having a sawtooth cross section can also be formed on the stopper portion 13a of the camp 13.

(Operations and Effects of the Invention) The paint pressure-feeding coating roller of the present invention can be implemented and used as described above, and includes a non-rotating squeeze shaft equipped with a scraping convex portion extending along the axial direction. By using this, even when using a highly viscous paint, as long as the paint is fed into the recess adjacent to the convex part, the paint in the recess is removed by the relative rotation between the core of the roller body and the squeeze shaft. can be automatically scraped out to the roller body side. 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 achieved.

Furthermore, according to the configuration of the present invention, the recessed 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 recessed 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, - It is also possible to stably support the main body and rotate it smoothly.

[Brief explanation of the drawing]

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. la, lb...squeeze shaft, 2a, 2b
...Large diameter shaft portion, 3a, 5b...Concave portion, 4...Convex portion for scraping, 5...Paint supply passage, 6...Paint distribution passage, 7...Double use as paint supply pipe Support rod, 8... Squeeze shaft support member, 9... Screw shaft portion for connecting squeeze shaft, 11... Rotating body for locking the roller body, 12... Nut portion, 13... Camp, 14・・・
・Roller body, 15...Paint outflow hole, 16...Paper tube, 17...Blind plug, 18...Threaded ring, 19
... Bottomed cylindrical core, 22 ... Concave surface, 24.
...Positioning hole, 25...Positioning protrusion, 26.
...Joint pipe.

Claims (1)

[Claims] Painting on a squeeze shaft that has a paint supply passage passing through between both ends, a scraping convex along the axial direction, and a paint distribution passage that communicates the paint supply passage with a concave adjacent to the scraping convex. A paint pumping type painting roller comprising a paint roller body rotatably fitted onto the outside, characterized in that a concave portion adjacent to a scraping convex portion of the squeeze shaft is partitioned into a plurality of sections in the length direction. Roller for mold painting.