JPS61249565A - Paint force-feed system coating roller - Google Patents

Abstract

PURPOSE:To surely supply a highly viscous paint into the main body of a roller by supporting one end of a squeeze shaft and a roller main body detaining shaft with a supporting rod, attaching a cap for closing to the free end and mounting externally a core to the shaft. CONSTITUTION:With respect to a paint force-feed system coating roller suitable for coating a highly viscous paint, one end of a squeeze shaft 1 is connected to a supporting rod 7 which is simultaneously used as a paint feed tube to communicate with a paint feed passage 5, a roller main body detaining rotor 11 is supported freely rotatable by the supporting rod 7 and a cap 13 is attached to the free end to close the passage 5. Besides, a bottomed cylindrical core 19 of the roller main body 14 provided with paint discharge holes 15 is externally mounted to the squeeze shaft 1, the opening end of the core 19 is concentrically screwed into the rotor 11, the bottomed end part of the core 19 is supported freely rotatable by the outer peripheral surface of the cap 13 and the core is smoothly rotated.

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 from the paint outflow hole of the core to the peripheral portion of the roller body.

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. In addition, since the annular space having 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 the paint will remain in the roller body and harden, requiring a great deal of effort and time for post-treatment.

(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. One end of the squeeze shaft, which is equipped with a supply passage, a scraping protrusion along the axial direction, and a paint distribution passage that communicates the paint supply passage with a recess adjacent to the scraping protrusion, is connected to a support rod that also serves as a paint supply pipe. The paint supply passages are connected so as to communicate with each other, and the support rod rotatably supports a rotating body for locking the roller body, and the free end of the squeeze shaft is provided with a cap for closing the paint supply passage. Attach the bottomed cylindrical core of the painting roller body with a paint outflow hole and fit it onto the squeeze shaft from the free end side, and place the open end of the core concentrically with the rotating body for locking the roller body. and the bottomed end of the core is rotatably supported by the outer peripheral surface of the 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, which has large diameter shaft portions 2a at both ends.
l 2b% A recess 3 formed by notching both sides in the diametrical direction between the large diameter shaft parts 2a and 2b along the axial direction.
a, 3b, scraping convex portions 4a, 4b formed along the axial direction by both recesses 3a, 3b, a paint supply passage 5 provided at the center so as to penetrate between both ends, and this paint supply passage. 5 and the two recesses 3a, 3b are connected to each other, and large diameter openings 5a, 5b of appropriate length are formed at both ends of the paint supply passage 5. 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 1. . By screwing the screw shaft portion 9 into the large diameter opening 5a at one end of the squeeze shaft 1, the squeeze shaft 1 is supported in a cantilevered manner by the squeeze shaft support member 8, and also serves as the paint supply pipe. The internal passage 7a of the support rod 7 and the paint supply passage 5 of the squeeze shaft 1 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 so as to be rotatable concentrically with the screw shaft portion 9.
A nut portion 12 is loosely fitted concentrically to the large diameter shaft portion 2a at one end.
It is equipped with

13 is a cap that closes the free end of the paint supply passage 5 in the squeeze shaft 1, and is a cap that closes the free end of the paint supply passage 5 in the squeeze shaft 1;
The squeeze shaft 1 includes a plug portion 13a that is tightly fitted and fixed to the inside of the squeeze shaft 1, and a flange portion 13b having a slightly larger diameter than the large diameter shaft portion 2b of the squeeze shaft 1 and having an outer circumferential surface formed into an arcuate surface.

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 number of paint outlet holes 15 around it, and a blind stopper 17 is fitted and fixed to the other end of the paper tube 16. It is provided with a bottomed cylindrical core 19 to which a threaded ring 18 that is screwed into a NAND portion 12 is concentrically connected and fixed.

Surface 2 of recesses 3a and 3b in squeeze shaft 1
2 is formed into a convexly curved surface in the circumferential cross section as shown in FIG. A shallow groove 23 is formed along the axial direction at the center of this groove surface 22.
3 is used as a guide during the drilling work to drill the paint distribution passage 6.

When assembling, the roller body 14 is attached to its core 1.
The core 19 is fitted into the squeeze shaft 1 from the open end side of the core 19, and 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. The bottomed side is rotatably supported by the flange portion 13b of the cap 13. At this time, as shown in FIG. 3, it is desirable that the outer circumferential surface of the cap flange portion 13b be configured to be close to the inner circumferential surface 17a of the cylindrical portion of the blind plug 17.

In use, paint is pumped into the central paint supply passage 5 of the squeeze shaft 1 via the support rod 7 which also serves as a paint supply pipe. The paint is forced out from within the paint supply passage 5 via the paint distribution passage 6 into the recesses 3a, 3b. In this state, as shown in FIG.
0 and move the roller body 14 back and forth along the surface 20 to be coated via the support rod 7, the roller body 14 is rotated back and forth around the squeeze shaft 1 and transferred on the surface 20 to be coated. .

The recess 3a of the squeeze shaft 1.

The paint sent into the inside of the roller body 3b is removed by the scraping convex parts 4a and 4b that rotate relative to the core 19, and the part 2 of the corner 2 of the recessed parts 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 .

In the above embodiment, the two recesses 3a and 3b (the two scraping protrusions 4a and 4b) were formed on the squeeze shaft 1, but the squeeze shaft 1 may have one, three or more, or a cylindrical shape with a bottom. Although the core 19 is constructed by combining the paper tube 16, the cap 17, and the threaded ring 18, it can also be integrally molded from plastic. Further, the large diameter shaft portions 2a and 2b formed at both ends of the squeeze shaft 1 close both ends of the recesses 3a and 3b, but may be omitted.

(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.

In addition, since the paint supplied into the recess can be used up to the end, even if the paint is a two-component reaction curing type, there is no need to leave a large amount of paint in the core of the roller body after work, unlike conventional paints. It also eliminates the risk of hardening and remaining.

Moreover, according to the configuration of the present invention, a bottomed cylindrical core with a paint outlet hole is used in the roller body, and the core can be rotated by the rotary body for locking the roller body and the cap on the free end side of the squeeze shaft. By configuring the core to be supported, the number of parts can be significantly reduced and the configuration can be made at low cost. It is possible to reduce the frictional resistance to the rotation and rotate it smoothly.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view, FIG. 2 is a perspective view of the squeeze shaft and cap, FIG. 3 is an enlarged longitudinal sectional front view of the main parts, and 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... Large diameter shaft part, 3a, 3b... Concave part, 4... Convex part for scraping out,
5... Paint supply passage, 6... Paint distribution passage, 7...
- Support rod that also serves as a paint supply pipe, 8... Squeeze shaft support member, 9... Screw shaft for connecting the squeeze shaft, 11... Rotating body for locking the roller body, 12...
Nut part, 13... Cap, 14... Roller body, 15... Paint outflow hole, 16... Paper tube, 17...
- Blind plug, 18... Threaded ring, 19... Bottomed cylindrical core.

Claims (1)

[Claims] One end of the squeeze shaft is provided with a paint supply passage penetrating between both ends, a scraping convex part skewed in the axial direction, and a paint distribution passage communicating the paint supply passage with a concave part adjacent to the scraping convex part. As a support rod that also serves as a supply pipe,
The paint supply passages are connected to each other so as to communicate with each other, and a rotating body for locking the roller body is rotatably supported by the support rod, and a cap for closing the paint supply passage is attached to the free end of the squeeze shaft. , a bottomed cylindrical core with a paint outlet hole of the painting roller body is externally fitted onto the squeeze shaft from the free end side, and the open end of the core is screwed concentrically to the rotary body for locking the roller body. Additionally, a paint pressure-feeding type painting roller comprising a bottomed end of the core rotatably supported by the outer peripheral surface of the cap.