JP6994263B2 - How to manufacture a pipe with a roller for painting and a brush - Google Patents

Description

Article 30, Paragraph 2 of the Patent Law Applicable Website publication date: December 16, 1st year of Reiwa, website address: http: // www. taiho. co / demo, http: // www. taiho. co / demo / news. html, http: // www. taiho. co / demo / go_r. html, http: // www. taiho. co / demo / newlist. html, http: // www. taiho. co / demo / news086. html, http: // www. taiho. co / demo / news / hohoemi_roller1912. Publication date of pdf website: December 17, 1st year of Reiwa, website address: http: // www. taiho. co, http: // www. taiho. co / news. html, http: // www. taiho. co / go_r. html, http: // www. taiho. co / newlist. html, http: // www. taiho. co / news086. html, http: // www. taiho. co / news / hohoemi_roller1912. Publication date of pdf website: January 8, 2nd year of Reiwa, website address: http: // www. taiho. co / demo, http: // www. taiho. co / demo / go_r. html, http: // www. taiho. co / demo / newlist. html, http: // www. taiho. co / demo / news086. html, http: // www. taiho. co / demo / news / hohoemi_roller1912. Publication date of pdf website: January 9, 2nd year of Reiwa, website address: http: // www. taiho. co, http: // www. taiho. co / go_r. html, http: // www. taiho. co / newlist. html, http: // www. taiho. co / news086. html, http: // www. taiho. co / news / hohoemi_roller1912. pdf

The present invention relates to a coating roller for painting a wall surface, a floor surface, or the like, and a method for manufacturing the same.

Many coating rollers are provided with a brush portion or the like on the outside of the cylinder. One of the longitudinal directions of such a cylinder is provided with an entrance into which a metal shaft extending from the roller handle is inserted. Further, on the other side of the cylinder in the longitudinal direction, a cap is arranged so as to prevent paint from entering the cylinder, and some of the cylinders are covered with the cap. As such a roller for painting, for example, Patent Documents 1 and 2. The coating rollers described in are known.

Patent Document 1 discloses that a cap is fitted to a paper tube so that the paint does not enter the paper tube ( column 5, lines 18 to 20 ).

In Patent Document 2, the brush portion is adhered to the outer surface of the tubular body, the tip of the brush portion protrudes outward from the tip edge of the tubular body, and a part of the protruding brush portion is pushed into the cap, and the brush portion is pushed onto the inner wall of the cap. It discloses that it is bonded (paragraph [0009]).

Special Fair 8-2434 Gazette Japanese Patent No. 3467232

In the coating roller described in Patent Document 1, since the side surface of the roller is not covered with the brush portion, the paint sticking to the cap portion due to surface tension or the like may drip during coating and uneven coating may occur. ..

Further, in the coating roller described in Patent Document 2, the brush portion is folded into the cylinder, but for example, when the inner diameter of the cylinder is half of 1 cm and the hair length of the brush portion is 4 mm, the brush portion is folded. It is very difficult to fold the brush part inside the cylinder.

In fact, conventionally, a coating roller having a small outer diameter of a cylinder such as a blind fence gap, a louver gap, or a wood deck gap has not existed before the present invention. In other words, it has not been possible to paint the gaps in the blindfold fence, the gaps in the louvers, and the gaps in the wooden deck that have already been installed.

The coating roller of the present invention has a cylinder covered with a brush portion and an insertion port inserted into the cylinder and arranged on one side in the longitudinal direction of the cylinder to insert a shaft extending from a painting handle. An insertion portion having a It is provided between the portion and the bearing portion and has a holding portion for holding a part of the shaft, and the other side of the cylinder is closed by a first member formed by the part of the cylinder. ing.

In one embodiment of the invention, the bearing has one on the side where the shaft enters and the other in contact with the first member, and in the vicinity of the other, at least one outer ring on its outer circumference. The outer diameter of the outer ring is larger than the inner diameter of the cylinder.

In another embodiment of the present invention, the bearing portion has one on the side where the shaft enters and the other in contact with the first member, and in the vicinity of the other, at least one inner circumference thereof. Has a ring .

In another embodiment of the present invention, the outer surface of the first member may be covered with a brush portion.

In still another embodiment of the present invention, the tubular body and the brush portion may be bonded by heat welding.

In one embodiment of the invention, the outer diameter of the cylinder may be from about 1 cm to half of it.

The method for manufacturing a pipe around which a brush portion is wound according to the present invention is a bonding step in which a strip-shaped brush portion is spirally wound around a pipe made of resin and bonded to the pipe, and a pipe to which the brush portion is bonded. A cutting step of cutting the pipe to a predetermined length, a step of melting or deforming the other of the cut pipe having one and the other by heat, and the melted or deformed portion of the pipe. It includes a step of arranging in a pipe and forming a first member.

In one embodiment of the present invention, the step of inserting a bearing portion for receiving a part of the shaft up to the first member in the pipe may be further included.

In another embodiment of the present invention, a step of inserting a bearing portion for receiving a part of the shaft from the pipe into the pipe may be further included before the step of forming the first member. In that case, it is preferable that a bearing portion for receiving a part of the shaft is inserted into the pipe from the other side of the pipe before the step of forming the first member.

In yet another embodiment of the present invention, a step of inserting a holding portion for holding a part of the shaft into the pipe and then press-fitting the insertion portion for inserting the shaft may be further included.

In another embodiment of the present invention, in the forming step, the first member is formed by rotating the pipe while pressing it against the heater, and the rotation direction of the pipe is such that the pipe rotates in the bonding step. It is preferably the same as the direction.

In the coating roller of the present invention, the other side of the cylinder opposite to the side where the shaft enters is closed by the first member formed by a part thereof. This makes it possible to prevent the paint from entering the cylinder from the other side of the cylinder when the coating roller of the present invention is immersed in the paint. Since the first member is formed by a part of the cylinder, it is not necessary to separately prepare a cap for closing the cylinder as in Patent Documents 1 and 2, and it is not necessary to have an extra stock.

In one embodiment of the present invention, the bearing portion and the first member are in contact with each other. The bearing portion is pushed by the shaft or the holding portion that holds the shaft, but if the bearing portion is in contact with the first member in advance, the bearing portion is further pushed and the position does not change.

In one embodiment of the invention, the bearing portion has at least one outer ring on its outer circumference in the vicinity of the other, the outer diameter of the outer ring being larger than the inner diameter of the cylinder. Therefore, the bearing portion can be fixed in the tubular body.

In another embodiment of the invention, the bearing has at least one inner ring on its inner circumference in the vicinity of the other. Therefore, the bearing portion and the first member can be brought into contact with each other in a stable state. Further, by reinforcing the inner ring, it is possible to counter the force that the cylinder pushes back the outer ring of the bearing portion.

In another embodiment of the present invention, the outer surface of the first member is covered with a brush portion, and the paint that becomes a ball does not adhere to the outer surface. Therefore, in the coating roller of another embodiment of the present invention, the scattering of the paint can be reduced as compared with the roller whose outer surface of the first member is not covered with the brush portion. Further, in the coating roller of another embodiment of the present invention, the appearance is better than that in which the outer surface of the first member is not covered with the brush portion.

In still another embodiment of the present invention, the cylinder and the brush portion are adhered by heat welding, and even with an organic solvent-based paint, the brush portion does not turn over or peel off.

In one embodiment of the present invention, since the outer diameter of the cylinder is about 1 cm to half of that, it is possible to paint the gaps of the blindfold fence, the gaps of the louvers, and the gaps of the wood deck. Further, in one embodiment of the present invention, the narrow gap between the rain gutter and the fascia and the narrow gap between the downspout and the wall can be neatly painted.

In the method of manufacturing a pipe around which a brush portion is wound according to the present invention, since the melted or deformed portion of the pipe is arranged in the pipe, it is not necessary to prepare a cap for closing the other side of the pipe. This saves the trouble of inserting, storing, managing, ordering, and paying for the cap.

In one embodiment of the present invention, since the bearing portion is inserted up to the first member in the pipe, the bearing portion is pushed by the shaft or the holding portion that holds the shaft, but the bearing portion comes into contact with the first member in advance. If so, the bearing portion is pushed further and the position does not change.

In another embodiment of the present invention, the bearing portion is inserted into the bearing portion from the other side of the pipe prior to the step of forming the first member, so that the distance and the distance for inserting the bearing portion from one side of the pipe are also moved. The time can be shortened.

In yet another embodiment of the present invention, a holding portion for holding a part of the shaft is inserted into the pipe, and then an insertion part for inserting the shaft is press-fitted, so that the first part of the cylinder is used. It is possible to manufacture a coating roller on which a member is formed.

In another embodiment of the present invention, the first member is formed by rotating the pipe while pressing it against the heater in the forming step. Since the rotation direction of the pipe is the same as the rotation direction of the pipe in the bonding process , the brush portion does not come off.

FIG. 1 is a schematic view showing a cut portion end face of a component constituting a coating roller according to the first embodiment of the present invention. (A) is a schematic view showing a strip-shaped cloth in which microfibers are planted on a long cylinder spirally wound and bonded to each other, and (b) is a schematic view showing a place where a heater is pressed against the other side of the cylinder. It is a schematic diagram which shows the place where it is made, and (c) is the schematic diagram which shows the place where the shaper is pressed against the other side of the cylinder. FIG. 3 is a diagram showing a flow of a manufacturing process of a coating roller according to the second embodiment of the present invention. FIG. 4 is a diagram showing a flow of a manufacturing process of a coating roller according to a third embodiment of the present invention. (A) is a diagram showing traces painted by the rollers of the present embodiment, and (b) is a diagram showing traces painted by a conventional roller. (A) is a diagram showing traces painted by the rollers of the present embodiment, and (b) is a diagram showing traces painted by a conventional roller. It is a figure which shows that the roller of this embodiment can paint a gap of a blindfold fence. It is a figure which shows that the roller of this embodiment can paint a gap of a louver. It is a figure which shows that the roller of this embodiment can paint a gap of a wood deck.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic view showing a cut portion end face of a component constituting the coating roller 1 according to the first embodiment of the present invention.

The coating roller 1 includes a tubular body 10, an insertion portion 20, a holding portion 30, and a bearing portion 40.

The tubular body 10 is a hollow hollow body 13 having one 11 and the other 12 in the longitudinal direction X thereof. One 11 of the cylinder 10 remains hollow because the shaft (not shown) extending from the painting handle (not shown) serves as an insertion port. However, the other 12 of the cylinder 10 is closed by the first member 14 in order to prevent the paint from flowing into the cylinder 10.

The material of the cylinder 10 is a resin, and may be polypropylene, for example. When the material of the cylinder 10 is a thermoplastic resin, the first member 14 is formed by the other part of the cylinder 10. Specifically, the first member 14 is formed by melting or deforming the other part of the originally hollow and unclosed cylinder 10. The outer diameter of the cylinder 10 may be from about 1 cm to half of it, and the inner diameter of the cylinder 10 may be between half to several millimeters of 1 cm under conditions smaller than the outer diameter.

The outside of the cylinder 10 is covered with a brush portion (not shown). The brush portion is preferably a cloth with microfiber flocked. This is because it is possible to suppress the scattering of paint. The hair length of the microfiber may be 2 to 5 mm. The material of the brush portion is preferably higher than the melting point or softening point of the cylinder 10. The material of the brush portion may be polyester. This is because polyester has a higher melting point and softening point than polypropylene.

The insertion portion 20 has a hollow body 23 having one 21 and the other 22 in its longitudinal direction X, a contact surface 24 that abuts on one end of the tubular body 10, and a guide surface that guides the shaft of the painting handle to the insertion portion 20. It has a flange 26 having 25 and a plurality of outer rings 27, 28, 29 on the outer surface of the hollow body 23. The flange 26 serves as an insertion slot for inserting the shaft of the painting handle. The outer diameters of the outer rings 27, 28, and 29 are larger than the inner diameter of the cylinder 10, and the insertion portion 20 is inserted into the cylinder 10 until the contact surface 24 of the insertion portion 20 contacts one end 11 of the cylinder 10. By press-fitting, the insertion portion 20 can be fixed at a predetermined position on the tubular body 10.

The holding portion 30 has a hollow body 33 having one 31 and the other 32. Since the outer diameter of the hollow body 33 is smaller than the inner diameter of the cylinder 10, the holding portion 30 can be easily inserted into the cylinder 10 before the insertion portion 20 is press-fitted into the cylinder 10.

The inner diameter of the hollow body 33 is smaller than the outer diameter of the shaft of the painting handle, but since the hollow body 33 is cut in the longitudinal direction, the shaft of the painting handle can be easily inserted into the hollow body 33.

Further, the outer diameter of the holding portion 30 is larger than the inner diameter of the inserting portion 20. Therefore, even if the holding portion 30 holding the shaft of the painting handle is moved toward the insertion portion 20 together with the shaft, the holding portion 30 does not slip into the insertion portion 20.

The bearing portion 40 is a hollow body 43 having one 41 and the other 42, a plurality of outer rings 44, 45, 46 on the outer surface thereof in the vicinity of the other 42 of the hollow body 43, and the vicinity of the other 42 of the hollow body 43. It has at least one inner ring 47 on its inner surface.

Further, the bearing portion 40 is arranged inside the tubular body 10 and in the vicinity of the other side. Specifically, the bearing portion 40 is in contact with the first member in the tubular body 10.

The outer diameters of the outer rings 44, 45, 46 are larger than the inner diameter of the tubular body 10. Therefore, even if the other side of the bearing portion is distorted by the force from the tubular body 10, one of the bearing portions is not easily affected because the outer rings 44, 45, and 46 are near the other.

The width of each of the plurality of outer rings 44, 45, 46 in the longitudinal direction X is shorter than the width of the inner ring 47 in the longitudinal direction X. The outer rings 44, 45, 46 act like spikes that bite into the inside of the cylinder 10, whereas the inner ring 47 receives a force from the cylinder 10 via the outer rings 44, 45, 46. This is because it works to reinforce the bearing in order to withstand it. Further, it is preferable that the inner ring 47 is arranged under at least one of the outer rings 44, 45 and 46.

Further, it is preferable that both the end of the hollow body 43 and the end of the inner ring 47 form the other end of the bearing portion 40. This is because the bearing portion and the first member can be brought into contact with each other in a stable state. In addition, it is possible to reinforce the end portion that is weak in strength.

Further, the end of the outer ring 46, the end of the hollow body 43, and the end of the inner ring 47 may both form the other end of the bearing portion 40. This is because the end portion having a weak strength can be further reinforced.

Further, the inner diameter of the bearing portion 40 is smaller than the outer diameter of the holding portion 30. Therefore, even if the holding portion 30 holding the shaft of the painting handle is moved toward the bearing portion 40 together with the shaft, the holding portion 30 does not slip into the bearing portion 40. The outer diameter of the holding portion 30 is smaller than the outer diameter of the inserting portion 20.

The outer diameter of the bearing portion 40 of the portion excluding the outer rings 44, 45, 46 of the bearing portion 40 is substantially the same as the inner diameter of the tubular body 10. The outer diameter of the outer rings 44, 45, 46 of the bearing portion 40 may be smaller than the outer diameter of the outer rings 27, 28, 29 of the insertion portion 20. This is because after the bearing portion 40 is pushed to the first member, no force is applied in the direction in which the bearing portion 40 is pulled out.

Hereinafter, a method for manufacturing a coating roller according to a second embodiment of the present invention will be described with reference to FIGS. 2 and 3. FIG. 2 is a diagram showing a part of a manufacturing process of a coating roller according to the present invention, and FIG. 3 is a diagram showing a flow of the manufacturing process.

A long cylinder 100, which is a base of the cylinder 10, is prepared (step S10). As shown in FIG. 2A, a strip-shaped cloth 90 in which microfibers are planted on a long cylinder 100 is spirally wound and bonded to each other (step S20).

The bonding method may be performed by applying an adhesive to at least one of the long cylinder 100 and the cloth 90. Hot melt may be used as the adhesive. A coater may be used as a device for applying the adhesive.

Further, instead of adhering with an adhesive, they may be adhered by melting at least one of the long cylinder 100 and the cloth 90 using high frequency or ultrasonic waves. This is because when the solvent-based paint is applied, the tubular body 110 to which the cloth 90 is adhered by high frequency or ultrasonic waves has higher durability than the tubular body 110 to which the cloth 90 is adhered by the adhesive.

The long cylinder 100 in which the cloth 90 is spirally wound is cut at a predetermined length (position 95) (step S30) to form the cylinder 110 described above.

In order to spirally wind the cloth 90 around the long cylinder 100, for example, the cloth 90 rotates around the long cylinder 100 in the longitudinal direction Y of the long cylinder 100, and the tension of the cloth 90 does not sag. You may move to (first winding method).

Alternatively, in order to spirally wind the cloth 90 around the long cylinder 100, even if the long cylinder 100 rotates and moves in the longitudinal direction Y of the long cylinder 100 in the direction in which the tension of the cloth 90 does not sag. Good (second winding method).

The second winding method is suitable for joining a new cloth 90 when the cloth 90 runs out because the cloth 90 does not rotate as compared with the first winding method. Further, in the second winding method, since the cloth 90 does not rotate as compared with the first winding method, it is easy to arrange a tension controller such as a dancer roll that keeps the tension of the cloth 90 constant. Further, in the second winding method, since the cloth 90 does not move in the longitudinal direction Y as compared with the first winding method, it is not necessary to return to the initial position to wind the next long cylinder 100. Further, in the second winding method, for example, the long cylinder 100 in which the cloth 90 is not wound is supplied from the left, and the long cylinder 100 in which the cloth 90 is wound is discharged to the right, so that the cloth can be efficiently wound. The wound long cylinder 100 can be produced.

FIG. 2B is a schematic view showing that the heaters 160 and 162 are pressed against the other 112 of the tubular body 110.

A rotating rod (not shown) is inserted from one 111 of the cylinder 110, whereby the heaters 160 and 162 are pressed against the other 112 of the cylinder 110 while the cylinder 110 is rotated. By moving the heaters 160, 162 inward, a part of the cylinder 110 is melted or deformed, and they are pushed into the other hole of the cylinder 110 (step S40).

Specifically, the heaters 160 and 162 melt or deform the other portion of the cylinder 110, and the portions tend to gather in the central portion of the cylinder 110 by moving inward of the heater 160 and the heater 162. Since the cylinder 110 is hollow, it falls into the hollow portion and then fills the other hole of the cylinder 110. Here, the inside is a direction toward the central axis of the cylinder 110, as shown by an arrow Z in FIG. 2 (b).

In the heaters 160 and 162 having the shape shown in FIG. 2B, the heater 160 and the heater 162 are moved inward, but depending on the shape of the heater, the normal line when FIG. 2B is a flat surface. By moving the heater in the direction, the melted or deformed portion of the cylinder 110 may be pushed into the hollow portion of the cylinder. As for the shape of such a heater, for example, when the heater is moved in the direction of popping out from the paper surface of FIG. 2 (b), one piece of the end face is a triangular shape in which the heater shown in FIG. 2 (b) is in contact with the cylinder 110. Although it is tilted like a hypotenuse, the shape is such that the distance between the two heaters and the portion where the cylinder 110 is in contact becomes narrower toward the back.

Further, the temperature of the heaters 160 and 162 is preferably lower than the temperature at which the cloth 90 melts or deforms. This is because if the cloth 90 is melted or deformed, the appearance of the coating roller is not good.

FIG. 2C is a schematic view showing that the shaper 170 is pressed against the other side of the cylinder 110. The shaper 170 is pressed against the other portion of the molten or deformed tubular body 110 to shape the shape of the other portion (step S50). As a result, the first member is formed on the other end of the tubular body 110.

Next, the bearing portion is inserted into the inside of the cylinder 110 from the entrance on one side of the cylinder 110, and is pushed until it comes into contact with the first member (step S60). Since the bearing portion is a portion that receives the shaft of the roller handle, it needs to be firmly fixed to the tubular body 110, and the outer diameter of at least a part of the bearing portion is larger than the inner diameter of the tubular body 110. For this reason, pushing the bearing portion from one side of the cylinder 110 to the vicinity of the other is more difficult than inserting the bearing portion from the other entrance to the vicinity of the other before the other entrance of the cylinder 110 is closed. However, when the material of the bearing portion and the cylinder 110 are the same or the melting points are close to each other, if the bearing portion is inserted before the other entrance of the cylinder 110 is closed, the bearing portion is generated by the heat of the heaters 160 and 162. Is considered to be deformed, and in order to avoid this, the bearing portion is inserted into the cylinder 110 in the second embodiment after the first member is formed.

Further, it is preferable to have an inner ring on the inner circumference of the bearing portion in the vicinity of the contact with the first member. When viewed from the entrance on one side of the tubular body 110, the shape of the first member is a shape like a substantially hemispherical shape in which the vicinity of the central portion protrudes, but it is not an ideal shape like a true sphere. .. Therefore, when a cylinder without an inner ring abuts on the first member, there may be a portion where the edge of the cylinder abuts on the first member and a portion where the cylinder does not. On the other hand, when the other side of the bearing is closed with a flat object, the central part of the first member is protruding, so it seems that the bearing can be arranged evenly, but the air becomes an obstacle and the bearing is used. The portion cannot be pushed in until it comes into contact with the first member. When the bearing portion has an inner ring, the bearing portion can be brought into contact with the vicinity of the central portion of the first member while allowing air to escape.

Further, when the bearing portion has at least one outer ring on the outer periphery thereof in the vicinity where the first member is in contact, the vicinity of the ring on the outer periphery thereof and on the inner circumference of the bearing portion. It is preferable to have an inner ring . This is because the outer diameter of the outer ring is larger than the inner diameter of the cylinder 110, so that a large force is applied toward the center of the cylinder of the bearing portion when the bearing portion is inserted into the cylinder portion 110, but this is to be received.

After that, a holding portion for holding the shaft is inserted into the cylinder 110 from the entrance on one side of the cylinder 110 (step S70), and then inserted so that the shaft can be easily inserted. The insertion portion having a trumpet-shaped mouth is press-fitted into the cylinder 110, and the contact surface of the flange of the insertion portion comes into contact with one end of the cylinder 110 (step S80).

By the way, in FIGS. 2 (b) and 2 (c), the cylinder 110, the heaters 160, 162 and the shaper 170 are described facing sideways, but the cylinder 110 stands in the vertical direction and is a heater. It is preferred that the 160, 162 and the shaper 170 are also arranged accordingly. Even if the cylinder 110 is turned sideways, the molten or deformed portion of the cylinder 110 can be leveled by rotating the cylinder 110. However, due to the influence of gravity, its shape can be distorted. This is because when the cylinder is rotating while standing in the vertical direction, its shape is less likely to be distorted.

Further, the direction in which the tubular body 110 rotates in step S40 is preferably the same as the direction in which the long tubular body 100 rotates when the long tubular body 100 rotates in step S20. This is because if the cylinder 110 is rotated in a direction different from the direction in which the long cylinder 100 is rotated, the cloth 90 may be peeled off from the cylinder 110. Further, for the same reason, it is preferable that the direction in which the tubular body 110 rotates in step S40 is the same as the direction in which the cloth 90 rotates when the cloth 90 rotates in step S20.

Further, in step S50, the tubular body 110 may rotate in the same manner as in step S40.

Hereinafter, a method for manufacturing a coating roller according to a third embodiment of the present invention will be described with reference to FIGS. 2 and 4. FIG. 4 is a diagram showing the flow of the manufacturing process, and the description of the steps assigned the same step numbers as those in FIG. 2 will be omitted.

In the second embodiment, the bearing portion is inserted into the cylinder between the step S50 for shaping the other end of the cylinder and the step S70 for inserting the holding portion into the cylinder, but in the third embodiment, the length is long. The second embodiment is to insert the bearing portion into the cylinder between the step S30 for cutting the cylinder and the step S40 for pushing the melted or deformed portion into the cylinder while heating the other end of the cylinder. Is different.

Specifically, the bearing portion is inserted to a predetermined position of the tubular body 110 (step S35). Here, as in the second embodiment, it is conceivable to push the bearing portion from one entrance to the other entrance, but the bearing portion is inserted from the other entrance to a predetermined position near the other entrance. It is preferable to push in the bearing portion. This is because the distance that the bearing portion moves in the cylinder 110 is shortened. In this case, the melting point of the bearing portion is preferably higher than the melting point of the tubular body 110. This is because it is possible to prevent the bearing portion from being melted or deformed by the heat of the heaters 160 and 162.

Even if the material of the bearing portion and the cylinder 110 are the same or the melting points of the respective cylinders are close to each other, the bearing is adjusted by adjusting the temperature of the heaters 160 and 162 and the contact time between the heaters 160 and 162 and the cylinder 110. It is possible to avoid melting or deforming the part.

The bearing portion preferably has an inner ring on the inner circumference thereof near the other. This is because if the inner diameter of the bearing portion is large, the first member may enter the bearing portion, but if the inner diameter of the bearing portion is small, the possibility that the first member enters the bearing portion is reduced. .. Further, as in the second embodiment, when the bearing portion is inserted into the cylinder portion 110, a large force is applied toward the center of the cylinder of the bearing portion, but the force can be received.

In the coating roller of the first embodiment and the coating rollers manufactured in the second embodiment and the third embodiment, since the first member for closing the other side of the cylinder is made of a part of the cylinder, the first member is formed. The second embodiment and the third embodiment are suitable for manufacturing a roller having a small outer diameter of the cylinder, for example, a roller having an outer diameter of about 1 cm or less (note that the outer diameter of the cylinder is about 1 cm or less). The lower limit of the diameter is about half of 1 cm).

Below, the coating roller in the first embodiment (hereinafter referred to as the roller of the present embodiment) in which the outer diameter of the cylinder is about 6 mm and the inner diameter of the cylinder is less than half of 1 cm (hereinafter, the inner diameter of the cylinder). The lower limit is several millimeters) and a conventional coating roller (hereinafter referred to as a conventional roller) having an outer diameter of a cylinder of 15 mm will be described. Both the roller of the present embodiment and the brush portion of the conventional roller are flocked with microfiber, and the hair length of each is 4 mm.

Experiment 1
FIG. 5 is a diagram showing how much paint is applied to the floor when paper is attached to the wall and the floor and the roller of the present embodiment and the conventional roller are used to apply the paper from the wall to the boundary between the wall and the floor. .. FIG. 5A is a trace painted by the roller of the present embodiment, and FIG. 5B is a trace painted by the conventional roller. In both FIGS. 5 (a) and 5 (b), the left side is the wall side and the right side is the floor side with the central line as a boundary.

The paint adheres to the floor in both the roller of the present embodiment and the conventional roller, but the roller of the present embodiment has a slightly smaller amount of adhesion to the floor than the conventional roller. Further, the roller of the present embodiment is painted more beautifully up to the boundary between the wall and the floor than the conventional roller.

That is, when painted from the wall to the boundary between the wall and the floor, the performance of the roller of this embodiment is superior to that of the conventional roller.

Experiment 2
FIG. 6 shows how close to the boundary between the wall and the floor can be applied from the wall to the floor without applying paint to the floor by pasting paper on the wall and the floor and using the roller of the present embodiment and the conventional roller. It is a figure shown. FIG. 6A is a trace painted by the roller of the present embodiment, and FIG. 6B is a trace painted by the conventional roller. In both FIGS. 6 (a) and 6 (b), the left side is the wall side and the right side is the floor side with the central line as a boundary. In the roller of the present embodiment, the paint is slightly applied to the boundary between the wall and the floor as compared with the conventional roller. That is, when trying to paint from the wall to the boundary between the wall and the floor, the performance of the roller of this embodiment is superior to that of the conventional roller.

Further, in the case of the rollers of the present embodiment, the gaps of the blindfold fence shown in FIG. 7, the gaps of the louvers shown in FIG. 8, and the gaps of the wood deck shown in FIG. 9 that have already been assembled are separated. It can be painted without doing anything. Further, with the roller of the present embodiment, even a narrow gap between the rain gutter and the fascia or a narrow gap between the downspout and the wall can be neatly painted.

1 Roller for painting 10 Cylinder body 11 Cylinder body 1 Cylinder body other 12 Cylinder body other 14 First member 20 Insertion part 21 Insertion part one side 22 Insertion part other side 23 Hollow body 24 Contact surface 25 Guide surface 26 Flange 27, 27, 29 Outer ring 30 Holding part 33 Hollow body 40 Bearing part 41 One of the bearing parts 42 The other of the bearing part 43 Hollow body 44, 45, 46 Outer ring 47 Inner ring

Claims (11)

The cylinder covered with the brush part and
An insertion portion inserted into the cylinder, arranged on one side in the longitudinal direction of the cylinder, and having an insertion port for inserting a shaft extending from a painting handle.
A bearing portion that is inside the cylinder and is arranged near the other side in the longitudinal direction of the cylinder and receives a part of the shaft.
A holding portion which is inside the cylinder and is arranged between the insertion portion and the bearing portion and holds a part of the shaft is provided.
The other side of the cylinder is closed by the first member formed by a part of the cylinder.
A roller for painting in which the first member and the bearing portion are in contact with each other . The bearing portion has one on the side where the shaft enters and the other that abuts on the first member, and has at least one outer ring on the outer periphery thereof in the vicinity of the other, and is of the outer ring. The coating roller according to claim 1 , wherein the outer diameter is larger than the inner diameter of the cylinder. Claimed that the bearing portion has one on the side where the shaft enters and the other that abuts on the first member, and has at least one inner ring on the inner circumference thereof in the vicinity of the other. Item 2. The coating roller according to Item 1 or 2 . The coating roller according to claim 1 , wherein the outer surface of the first member is covered with a brush portion. The coating roller according to claim 1 , wherein the cylinder and the brush portion are bonded by heat welding. The coating roller according to any one of claims 1 to 5 , wherein the outer diameter of the cylinder is about 1 cm to half of the outer diameter. An adhesive process in which a strip-shaped brush part is spirally wound around a pipe made of resin and bonded to the pipe.
A cutting step of cutting a pipe to which the brush portion is adhered to a predetermined length,
The step of melting or deforming the other of the pipe having the cut one and the other by heat,
A forming step of arranging a melted or deformed portion of the pipe in the pipe to form a first member,
A method for manufacturing a pipe around which a brush portion is wound, which comprises a step of inserting a bearing portion for receiving a part of a shaft up to the first member in the pipe. An adhesive process in which a strip-shaped brush part is spirally wound around a pipe made of resin and bonded to the pipe.
A cutting step of cutting a pipe to which the brush portion is adhered to a predetermined length,
The step of melting or deforming the other of the pipe having the cut one and the other by heat,
A forming step of arranging a melted or deformed portion of the pipe in the pipe to form a first member,
Prior to the step of forming the first member, a step of inserting a bearing portion for receiving a part of the shaft into the pipe from the pipe, and a step of inserting the bearing portion into the pipe.
A method for manufacturing a brush -wound pipe, comprising a step of inserting a holding portion for holding a part of the shaft into the pipe and then press-fitting the insertion portion for inserting the shaft. An adhesive process in which a strip-shaped brush part is spirally wound around a pipe made of resin and bonded to the pipe.
A cutting step of cutting a pipe to which the brush portion is adhered to a predetermined length,
The step of melting or deforming the other of the pipe having the cut one and the other by heat,
Including a forming step of arranging a melted or deformed portion of the pipe in the pipe to form a first member.
In the forming step, the first member is formed by rotating the pipe while pressing it against the heater.
A method for manufacturing a brush -wound pipe, wherein the direction of rotation of the pipe is the same as the direction in which the pipe rotates in the bonding step. The brush-wound pipe according to claim 7, further comprising the step of inserting the holding portion holding a part of the shaft into the pipe and then press-fitting the insertion portion for inserting the shaft. Production method. In the forming step, the first member is formed by rotating the pipe while pressing it against the heater.
The method for manufacturing a brush-wound pipe according to claim 7, 8 or 10, wherein the rotation direction of the pipe is the same as the rotation direction of the pipe in the bonding step.

Images