CN220111504U - Roller brush for brushing thick film paint - Google Patents

Abstract

The utility model relates to the technical field of hand tools for coating liquid or other fluids on surfaces, and discloses a roller brush for brushing thick film coatings, which is used for improving the liquid holdup of a roller and simultaneously avoiding extruding excessive coatings at one time. In the utility model, the deformation amplitude of the sponge roller is limited by the liquid outlet limiting piece, so that excessive coating is prevented from being extruded when the sponge layer of the roller is thicker, and the influence of excessive coating extrusion on the coating is avoided while the liquid holding capacity is improved. Meanwhile, the roller is divided into an inner macroporous sponge layer and an outer microporous sponge layer, so that the liquid holdup is improved, and meanwhile, the coating film is prevented from being rough.

Description

Roller brush for brushing thick film paint

Technical Field

The present utility model relates to the field of hand tools for applying liquids or other fluids to surfaces, and in particular to a roller brush for applying thick film coatings.

Background

The roller brush is a common hand tool for painting paint, and has obvious advantages in construction efficiency compared with the conventional brush.

The roller of the roller brush has a certain liquid holdup and can suck a certain amount of paint to roll back and forth on the surface to be painted. Wherein the liquid holdup of the rubber roller is minimum, and the rubber roller is mainly used for printing patterns on the surface to be painted. The application scenes of the flannelette roller and the sponge roller are basically consistent, the liquid holdup of the sponge roller is larger, and the coating film painted by the flannelette roller is smoother.

However, for thick film coatings such as water-repellent latex, the liquid hold-up of existing roller brushes is not satisfactory and frequent dipping of the coating is required. The rubber roller and the flannelette roller are difficult to promote liquid holdup due to the limitation of material characteristics. For the sponge roller, although the liquid holdup can be simply improved by thickening the sponge, a new problem is brought along with thickening of the sponge, namely the deformation amplitude is large in the roller use process, and a large amount of paint is extruded with little effort, so that normal painting cannot be performed. Therefore, the prior sponge roller is internally provided with a thicker roller core, and the thickness of the sponge layer is not large.

Disclosure of Invention

The utility model provides a roller brush for brushing thick film paint.

The technical problems to be solved are as follows: the existing roller brush has small liquid holdup, and influences the efficiency of brushing thick film paint.

In order to solve the technical problems, the utility model adopts the following technical scheme: a roller brush for brushing thick film coating is used for avoiding extruding too much coating once when improving the cylinder liquid holdup, includes the imbibition cylinder of being made by flexible porous material, pass imbibition cylinder axis and with handle fixed connection screw rod roller bearing as an organic whole, cover establish on the screw rod roller bearing and the play liquid limiting piece of centre gripping both ends about imbibition cylinder to and with two play liquid limiting piece centre gripping prevent sideslip nut including, go out the liquid limiting piece for the plectane that the diameter is less than imbibition cylinder, prevent sideslip nut and screw rod roller bearing screw thread cooperation.

Further, the liquid absorbing roller is a sponge roller with a sleeve sleeved on a screw roller shaft on the central axis, the sponge of the sponge roller is divided into an inner layer and an outer layer, the inner layer is a macroporous sponge layer for improving liquid holding capacity, and the outer layer is a microporous sponge layer for ensuring uniform liquid outlet.

Further, the outer diameter of the macroporous sponge layer is not larger than the diameter of the liquid outlet limiting sheet, and the difference value between the inner diameter and the outer diameter of the macroporous sponge layer is not smaller than half of the outer diameter of the microporous sponge layer.

Further, wear to be equipped with in the macroporous sponge layer and be on a parallel with screw rod roller bearing, be used for avoiding the macroporous sponge to inhale downwarping behind the full liquid.

Further, the lateral movement preventing nuts are double nuts, and one lateral movement preventing nut close to the liquid outlet limiting sheet among the two lateral movement preventing nuts at each end of the liquid suction roller is integrally connected with the liquid outlet limiting sheet in a welding mode.

Further, the surface of the liquid outlet limiting sheet, which is close to the liquid suction roller, is coated with a Teflon coating.

Further, the handle is integrally connected to the screw roller at one end of the screw roller.

Compared with the prior art, the roller brush for brushing the thick film coating has the following beneficial effects:

in the utility model, the deformation amplitude of the sponge roller is limited by the liquid outlet limiting piece, so that excessive paint is not extruded during brushing even if the sponge layer of the roller is thick, thereby improving the liquid holdup and avoiding the influence of the excessive paint extrusion on the brushing. Meanwhile, the sponge of the roller is divided into an inner layer and an outer layer, the inner layer is a macroporous sponge with large liquid holdup, the outer layer is a fine microporous sponge, and the paint film is prevented from being roughened while enough liquid holdup is ensured.

Drawings

FIG. 1 is a schematic view of a roller brush for applying thick film coating according to the present utility model;

FIG. 2 is a cross-sectional view of section AA in FIG. 1;

in the figure, a 1-liquid suction roller, a 11-sleeve, a 12-macroporous sponge layer, a 13-microporous sponge layer, a 2-screw roller, a 3-liquid outlet limiting sheet, a 4-traversing prevention nut and a 5-handle.

Detailed Description

As shown in figures 1-2, a roller brush for brushing thick film paint is used for improving the liquid holdup of a roller and avoiding extruding excessive paint at one time, and comprises a liquid suction roller 1 made of flexible porous materials, a screw roller 2 penetrating through the central axis of the liquid suction roller 1 and fixedly connected with a handle 5 into a whole, liquid outlet limiting sheets 3 sleeved on the screw roller 2 and clamped at the left end and the right end of the liquid suction roller 1, and transverse movement preventing nuts 4 clamping the two liquid outlet limiting sheets 3, wherein the liquid outlet limiting sheets 3 are circular plates with diameters smaller than those of the liquid suction roller 1, and the transverse movement preventing nuts 4 are in threaded fit with the screw roller 2.

The thickness of the portion of the liquid absorbing cylinder 1 outside the edge of the liquid outlet limiting sheet 3 is controlled to be 1-2 cm in thickness similar to that of the conventional sponge cylinder so as to avoid extruding too much coating. The anti-traversing nut 4 is used to limit traversing of the pipetting cylinder 1, which is not problematic for conventional cylinders because of the large deformations associated with traversing, but must be taken into account for the pipetting cylinder 1 of the utility model having a small cylinder core and a thick wash liquid layer. In the early test article of this embodiment, the lateral movement preventing nut 4 was not provided, and too much paint was still extruded once during use.

The liquid absorbing roller 1 is a sponge roller with a sleeve 11 sleeved on a screw roller 2 on the central axis, the sponge of the sponge roller is divided into an inner layer and an outer layer, the inner layer is a macroporous sponge layer 12 for improving liquid holdup, and the outer layer is a microporous sponge layer 13 for ensuring uniform liquid outlet.

Here, the macroporous sponge and the microporous sponge are trade names of the sponge commonly used in the market, but the macroporous sponge is rarely applied to a roller of a roller brush because the macroporous sponge is too soft and has too large liquid holding capacity (referring to a dish washing sponge), a lot of folds are left on a coating film when the macroporous sponge is used on the roller brush, and liquid leakage is easy. The macroporous sponge is selected not to directly contact the surface to be painted, but only to act as a wick, and is deformed when the microporous sponge layer 13 of the outer layer is pressed to supplement the paint consumed in the microporous sponge layer 13 of the outer layer. Note that the sleeve 11, the macroporous sponge layer 12, and the microporous sponge layer 13 may be glued together, but the glue between the macroporous sponge layer 12 and the microporous sponge layer 13 is not filled so as not to affect the transfer of paint from the macroporous sponge layer 12 to the microporous sponge layer 13.

The outer diameter of the macroporous sponge layer 12 is not larger than the diameter of the liquid outlet limiting sheet 3, so that the porous sponge layer 12 is prevented from being exposed to the outside to leak liquid. The difference between the inner diameter and the outer diameter of the porous sponge layer 12 is not less than half the outer diameter of the microporous sponge layer 13 to ensure a sufficient liquid holding amount.

An iron wire parallel to the screw roller 2 and used for preventing the macroporous sponge from being scratched downwards after being filled with liquid is penetrated into the macroporous sponge layer 12. This is a measure that is adopted when the liquid absorbing roller 1 is thicker, and the macroporous sponge layer 12 itself will deform to a certain extent under the influence of dead weight after the liquid absorbing roller is full of liquid, and can be relieved after the iron wires are inserted. According to experience during use, if the macroporous sponge layer 12 is more than 5 cm thick, it is necessary to insert an iron wire.

The lateral movement preventing nuts 4 are double nuts, and one lateral movement preventing nut 4 close to the liquid outlet limiting sheet 3 among the two lateral movement preventing nuts 4 at each end of the liquid suction roller 1 is integrally welded with the liquid outlet limiting sheet 3. The double nuts are used for preventing the transverse movement preventing nuts 4 from being driven to rotate by the liquid suction roller 1 in the using process, and the transverse movement preventing nuts 4 are welded with the liquid outlet limiting sheets 3 into a whole for preventing the liquid outlet limiting sheets 3 from transversely moving.

The surface of the liquid outlet limiting sheet 3, which is close to the liquid absorbing cylinder 1, is coated with a Teflon coating so as not to form excessive friction force on the liquid absorbing cylinder 1.

The handle 5 is integrally connected with the screw roller 2 at one end of the screw roller 2 to facilitate replacement of the components threaded on the screw roller 2.

The utility model relates to a roller brush for brushing thick film paint, which comprises the following steps:

step one: after the assembly, the tightness of the transverse movement preventing nut 4 is adjusted, so that the liquid absorbing roller 1 can smoothly rotate and cannot transversely move;

step two: and (5) painting a coating.

The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.

Claims (7)

1. A roller brush for brushing thick film coating, for avoiding extruding too much coating once while improving the liquid holdup of the roller, its characterized in that: the liquid suction device comprises a liquid suction roller (1) made of flexible porous materials, a screw roller (2) penetrating through the central axis of the liquid suction roller (1) and fixedly connected with a handle (5), liquid outlet limiting sheets (3) sleeved on the screw roller (2) and clamped at the left end and the right end of the liquid suction roller (1), and transverse movement preventing nuts (4) clamping the two liquid outlet limiting sheets (3) together, wherein the liquid outlet limiting sheets (3) are circular plates with diameters smaller than those of the liquid suction roller (1), and the transverse movement preventing nuts (4) are in threaded fit with the screw roller (2).

2. A roller brush for brushing thick film coatings as claimed in claim 1, wherein: the liquid absorbing roller (1) is a sponge roller with a sleeve (11) sleeved on a screw roller (2) on the central axis, the sponge of the sponge roller is divided into an inner layer and an outer layer, the inner layer is a macroporous sponge layer (12) for improving liquid holdup, and the outer layer is a microporous sponge layer (13) for ensuring uniform liquid discharge.

3. A roller brush for brushing thick film coatings according to claim 2, characterised in that: the outer diameter of the macroporous sponge layer (12) is not larger than the diameter of the liquid outlet limiting sheet (3), and the difference value between the inner diameter and the outer diameter of the macroporous sponge layer (12) is not smaller than half of the outer diameter of the microporous sponge layer (13).

4. A roller brush for brushing thick film coatings according to claim 2, characterised in that: an iron wire parallel to the screw roller (2) and used for preventing the macroporous sponge from being scratched downwards after being filled with liquid is penetrated into the macroporous sponge layer (12).

5. A roller brush for brushing thick film coatings as claimed in claim 1, wherein: the transverse movement preventing nuts (4) are double nuts, and one transverse movement preventing nut (4) close to the liquid outlet limiting sheet (3) among the two transverse movement preventing nuts (4) at each end of the liquid suction roller (1) is integrally welded with the liquid outlet limiting sheet (3).

6. A roller brush for brushing thick film coatings as claimed in claim 5, wherein: the surface of the liquid outlet limiting sheet (3) close to the liquid suction roller (1) is coated with a Teflon coating.

7. A roller brush for brushing thick film coatings as claimed in claim 1, wherein: the handle (5) is connected with the screw roller (2) into a whole at one end of the screw roller (2).