JPH0440072B2 - - 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. To describe this, the paint supply passage 5 passing through between both ends, the scraping protrusions 4a and 4b that are warped in the axial direction,
One end of a squeeze shaft 1 is provided with recesses 3a and 3b circumferentially adjacent to the scraping projections 4a and 4b, and a paint distribution passage 6 that communicates the paint supply passage 5 with the recesses 3a and 3b. ,
The support rod 7 which also serves as a paint supply pipe has a paint supply passage 5,
7a are connected to each other so as to communicate with each other, and the support rod 7 rotatably supports the roller body locking rotating body 11, and the free end of the squeeze shaft 1 is provided with a cap that closes the paint supply passage 5. 13, the bottomed cylindrical core 19 with a paint outlet hole of the coating roller body 14 is externally fitted onto the squeeze shaft 1 from the free end side, and the open end of the core 19 is rotated for locking the roller body. It is characterized in that it is screwed concentrically to the body 11 and that the bottomed end of the core 19 is rotatably supported by the outer peripheral surface of the cap 13.

(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 includes large-diameter shaft portions 2a and 2b at both ends, recesses 3a and 3b formed by notching both sides in the diametrical direction between the large-diameter shaft portions 2a and 2b along the axial direction; Both recesses 3a, 3
scraping convex portions 4a and 4b formed along the axial direction by b, a paint supply passage 5 provided at the center so as to penetrate between both ends, and this paint supply passage 5 and both of the recesses 3a and 3b. The paint supply passage 5 has large diameter openings 5a and 5b of appropriate lengths formed at both ends thereof. 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 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 the squeeze shaft 1 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 and concentric with the screw shaft portion 9, and has one end of the squeeze shaft 1 concentrically with the large diameter shaft portion 2a. It is provided with a nut portion 12 that is loosely fitted in the state.

Reference numeral 13 denotes a cap that closes the free end of the paint supply passage 5 in the squeeze shaft 1, and the plug portion 1 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 2b of the squeeze shaft 1 and having an outer peripheral surface formed into an arcuate surface.

14 is an aura main body, and a paint outflow 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.

Recesses 3a and 3b in squeeze shaft 1
As shown in FIG. 4, the surface 22 is formed into a convexly curved surface in the circumferential cross section. 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, the roller body 14 is inserted into the squeeze shaft 1 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 of the cap 13. Part 1
3b rotatably supported. 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 transferred from the paint supply passage 5 to the recesses 3a, 3 via the paint distribution passage 6.
It is pushed out into b. In this state, as shown in FIG. 4, the roller body 14 is pressed onto the surface to be coated 20 and the roller body 14 is reciprocated along the surface to be coated 20 via the support rod 7, thereby squeezing the roller body 14. It is rotated reciprocally around the shaft 1 and rolled on the surface 20 to be coated.

Thus, the recess 3a of the squeeze shaft 1,
The paint sent into the interior of the paint 3b is pressed against the corner portion 21 of the recessed portions 3a, 3b on the side in the rotational direction of the roller body by the scraping convex portions 4a, 4b that rotate relative to the core 19, and From the paint outflow hole 15 passing through the part 21, the paper tube 1
6 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 .

In the above embodiment, two recesses 3a and 3b (2
Although two scraping convex portions 4a, 4b) are formed on the squeeze shaft 1, it may be one or three or more. In addition, the bottomed cylindrical core 19 is attached to the paper tube 1.
6, the cap 17, and the threaded ring 18 are combined, but they can also be integrally molded using plastic sticks. Furthermore, squeeze shaft 1
The large diameter shaft portions 2a and 2b formed at both ends of the recess 3
Although both ends of a and 3b are closed, they may be omitted.

(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.

Furthermore, 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 cylindrical core with a bottom and a paint outlet hole is used in the roller body, and the core is rotated by the rotating body for locking the roller body and the cap on the free end side of the squeeze shaft. Due to this structure, the number of parts is extremely reduced and the structure can be made at low cost, compared to the case where the core is rotatably supported by the large diameter shaft portions at both ends of the squeeze shaft. Therefore, the frictional resistance to the rotation of the core can be reduced and the core can be rotated 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 portion, 3a, 3b...Concave portion, 4a, 4b...Protrusion 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 ... Screw shaft for connecting squeeze shaft, 11 ... Rotating body for locking the roller body, 12 ... Nut part, 13 ... Cap, 14 ... Roller main body, 15 ... Paint leakage Hole, 16...paper tube, 17...blind stopper, 18...threaded ring, 19...bottomed cylindrical core.

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. 5 and the recesses 3a, 3b are connected to a support rod 7 which also serves as a paint supply pipe so that the paint supply passages 5, 7a communicate with each other. A rotating body 11 for locking the roller body is rotatably supported on the support rod 7, and a cap 13 for closing the paint supply passage 5 is provided at the free end of the squeeze shaft 1.
The bottomed cylindrical core 19 with paint outlet holes of the coating roller body 14 is externally fitted onto the squeeze shaft 1 from the free end side, and the open end of the core 19 is attached to the rotating body for locking the roller body. 11, and the bottomed end of the core 19 is rotatably supported by the outer peripheral surface of the cap 13.