JP2000135469A - Valve-provided coater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent or reduce the damage to a valve and/or the surface of a valve seat when the coater is assembled by placing a part of a front cylinder behind the valve seat on the inner face of an intermediate cylinder in a member having a coating part in the intermediate cylinder and using a gap between the inner face of the intermediate cylinder and the periphery of the front cylinder as a liq. discharge control part. SOLUTION: When a valve member 4 is to be assembled, the member 4 is inserted into a cylinder as a coating tip with its protrusion ahead. In this case, although the protrusion is brought into contact with the rear end face of the intermediate cylinder of the coating tip, the valve seat is in the middle of the intermediate cylinder, and the protrusion never comes into direct contact with the valve seat of a coating tip member 3. A control part made narrower than the opening gap of the coating tip member 3 and controlling the discharge of a coating soln. is arranged in a valve-closed antidrying space behind a valve abutting position, hence the coating soln. is not dried nor solidified, a solid component is not accumulated in the gap of the control part, and the discharge of the coating soln. is not lowered or made nonuniform. Consequently, the damage to the valve seat or valve surface is reduced or prevented, and the discharge of the coating soln. is never lowered nor made nonuniform.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an applicator incorporating a coating liquid such as a paint, a paint, an ink, a correction liquid, a paste, an adhesive, a cosmetic liquid, a medicine, a repair agent, and a coating agent.

[0002]

2. Description of the Related Art A member having a coating portion is mounted in front of an opening of a container body having a coating liquid storage chamber therein, and a valve seat provided in the member having the coating portion is pressed against the valve seat. Conventionally, a large number of valve-applying applicators in which a valve mechanism constituted by a valve member biased forward and a valve mechanism is arranged have been filed. For example, Japanese Utility Model Publication No. 4-36295, Japanese Utility Model Publication No. 5-322
No. 35, Japanese Utility Model Publication No. 5-45422, and the like. Any of the applicators described in the above publications form a coating liquid storage chamber inside a container body, attach a member having an application section in front of an opening of the container body, and a member having the application section or The valve mechanism includes a valve seat provided on a member connected to the member and a valve member urged forward to press against the valve seat. All of the applicators described in the above publications are assembled by inserting a valve member from behind a valve seat.

[0003]

(1) When assembling the applicator,
Damage to the surface of the valve and / or valve seat, resulting in impaired sealing of the valve mechanism. For details,
It is as follows. Low-density polyethylene, soft vinyl, various thermoplastic elastomers in the application member, which is a constituent member of the valve mechanism, and / or the material of the valve member,
When using a soft material such as various synthetic rubbers, at the time of assembling, on the one hand, the valve seat portion of the coating member contacts the tip portion of the valve member, and on the other hand, the valve portion of the valve member forms the inner surface step of the coating member. The valve member moves to a predetermined valve press contact portion position while contacting the portion. During this movement process, that is, during the contact movement, the surface of the valve portion and / or the valve seat portion is damaged, and as a result, the sealing of the valve mechanism is impaired. (2) When the applicator is used, the discharge amount of the application liquid is not constant. The details are as follows. Normally, the coating liquid includes a pigment, a coloring component such as a dye, a resin component for fixing a colorant on a surface to be coated such as paper, a dispersant for dispersing a pigment component in the liquid, other preservatives, a rust inhibitor, Contains solids such as antioxidants. When the applicator is used for a long time, the solid content in the application liquid accumulates as scum in the application liquid passage section due to the drying of the application liquid, and the area of the application liquid passage section decreases, and the application liquid discharge amount decreases. . In addition, the scum may be removed by some action to recover the application liquid ejection amount. In this case, a change in the application liquid ejection amount causes a problem that unevenness occurs in the coating trace. Such a problem is that the dry solid content (weight ratio) of a titanium oxide pigment, a pigment fixing resin component, etc., such as a correction fluid, is 50%.
This was more remarkable in the case of a liquid having a high dry solid content rate exceeding the above, and a liquid having a high evaporation rate of a hydrocarbon solvent such as methylcyclohexane. SUMMARY OF THE INVENTION It is an object of the present invention to provide a valve-equipped applicator that prevents or reduces the occurrence of scratches on a valve portion and / or a valve seat surface during assembly, and that suppresses a change in the application liquid discharge amount.

[0004]

According to the present invention, a member having a coating portion is mounted in front of an opening of a container body having a coating liquid storage chamber therein, and a valve seat portion provided in the member having the coating portion. And a valve-equipped applicator provided with a valve mechanism constituted by a valve member urged forward so as to be pressed against the valve seat portion, wherein the valve seat portion is formed inside a member having an application portion. Formed on the inner surface of the middle cylinder portion, and further provided with a cylindrical front cylinder portion behind the valve portion of the valve member, at least a part of this cylindrical front cylinder portion is inside a member having an application portion. A valve-equipped applicator characterized by being arranged so as to always fit in the formed cylindrical middle cylinder portion, and having a gap formed by the inner surface of the middle cylinder portion and the outer peripheral surface of the front cylinder portion serving as a liquid amount regulating portion. Make a summary.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the accompanying drawings. 1 to 3 show a first embodiment. 1 shows a front section, FIG. 2 shows a side view of FIG. 1, and FIG. 3 shows an enlarged view of a main part of FIG. Reference numeral 1 denotes a container body made of a flexible material having an open end. The inside of the container main body 1 is a coating liquid storage chamber having a flat cross section, and the front end of the container main body 1 has a substantially cylindrical opening.
On the outer periphery of this opening, a male screw part 1a in the spiral right-hand tightening direction is provided.
Is provided. A front shaft 2 having a substantially cylindrical shape and having a through hole is screwed to the front of the container body 1. At the rear of the inside of the front shaft 2, there is provided a tubular middle tubular portion 2a inserted into the inner surface of the opening of the container body 1. Further, an outer cylindrical portion 2b is provided at a substantially middle position in the front-rear direction of the front shaft 2 from the middle cylindrical portion 2a to the outer circumference and further extends rearward in a cylindrical shape. On the inner peripheral surface of the outer cylindrical portion 2b, there is provided a female screw portion 2c to be screwed with the male screw portion 1a of the container body 1.

A coating member 3 having a cylindrical rear end and a flattened front end and having a through hole is inserted into the through hole of the front shaft 2 so that the tip thereof projects forward of the front shaft 2. The enlarged diameter portion at the end is fitted with a concave portion provided on the inner peripheral surface of the front shaft 2. The application member 3 is formed of an application section 3a on which a large number of application pieces having a substantially semicircular cross section and capable of bending deformation are formed, and a cylindrical section 3b following the application section 3a.
The application section 3a is formed by arranging a large number of application pieces in a row in a horizontal direction and by superposing a large number of the rows, and is entirely flat and flat brush-like. At the tip of a part of the plurality of application pieces arranged on the center side of the row inside the application section 3a, a projection is provided which protrudes inward. Further, plate-shaped side plates 3c are provided on the left and right sides of the application section 3a to suppress the overflow of the application liquid. A through hole is formed inside the coating member 3. At the front end of the through hole, an opening 3d having a rectangular cross section is provided rearward from the rear end of the coating piece, and a tubular middle tube portion 3e is provided behind the opening 3d. The valve seat 3f is formed as an inclined stepped portion at an intermediate position in the front-rear direction of the middle cylindrical portion 3e. That is, in the first embodiment, the rear portion of the middle cylinder portion 3e corresponds to a tubular middle cylinder portion provided behind the valve seat portion. In the first embodiment, the front shaft 2 attached to the container main body 1 and the coating member 3 having the coating portion 3a are described as separate bodies, but the front shaft 2 and the coating member 3 are combined. , Is regarded as a member having an application portion to be attached to the container body.

In the through hole of the coating member 3, a center of the tip of the coating portion 3 a of the coating member 3 is opened through an opening 3 d.
A valve member 4 having a valve function and a resilient function is arranged up to the rear end of the cylindrical portion 3b. At the tip of the valve member 4, a convexly deformable convex portion 4a is provided. The convex portion 4a has a plate shape with a rectangular cross section, and its tip is located immediately behind a projection provided at the tip of the coating piece, and the coating member 3
It is provided so as to pass through the opening 3d. A hemispherical valve portion 4b whose diameter increases from a diagonal position of a rectangular cross section at the rear end of the convex portion 4a is provided so as to abut on a valve seat portion 3f of the coating destination member 3 by a circumferential line. The rear part of the valve part 4b is formed as a cylindrical front cylinder part 4c, and two resilient parts 4d having a semicircular longitudinal section and a spiral shape as a whole are continuously provided behind the front cylinder part 4c. It is provided so as not to contact the inner surface of the cylindrical portion 3b.
A cylindrical rear cylinder portion 4e is provided at the rear end of the repelling portion 4d, and the rear cylinder portion 4e is joined so as to be fitted to the rear end of the cylindrical portion 3b of the coating member 3. The valve portion 4b is urged forward by the resilient portion 4d, and presses against the valve seat portion 3f to form a valve mechanism. Reference numeral 5 is a cap. Cap 5
A cylindrical middle cylinder portion 5a is provided from the front end of the inner surface to the rear, and two air circulation portions 5b are provided on the outer peripheral side of the front end of the middle cylinder portion 5a. Further, a close contact portion 5c is provided at a position behind the inner peripheral surface of the middle cylindrical portion 5a so as to be in close contact with the outer peripheral surface at the front end of the front shaft 2. At a slightly forward position on the inner surface of the rear end of the cap 5, four point ribs 5d protruding in the axial direction are provided on the circumference. The cap 5 protects the coating destination 3 from the outside, and can be easily detached from the front shaft 2 by the close contact portion 5c and the point rib 5d.

[0008] In the valve-equipped applicator according to the present invention, the discharge amount of the application liquid to the application section is controlled by the cross-sectional area in the application liquid flow path, and the rate-determining part (the speed of the speed process including several elementary processes) is controlled. (In this case, the speed is read as the discharge amount) is the portion having the smallest cross-sectional area, and this portion is referred to as the liquid amount regulating portion 6. The liquid amount regulating portion 6 in the first embodiment includes a rear inner peripheral surface of the middle cylindrical portion 3e of the coating member 3 and the valve member 4.
It is configured so as to form an annular gap formed with the outer peripheral surface of the front cylindrical portion 4c. That is, the cross-sectional area of the annular gap formed by the rear inner peripheral surface of the middle cylindrical portion 3e and the outer peripheral surface of the valve member 4 front cylindrical portion 4c is, for example, the application destination 3 opening 3d and the valve member 4 convex body 4a. The gap is smaller than the cross-sectional area of the gap. Further, since the liquid amount regulating portion 6 needs to function when the valve mechanism is open, at least a part of the cylindrical front cylinder portion 4c of the valve member 4 always has the function of the coating member 3. It is arrange | positioned so that it may fit in the cylindrical middle cylinder part 3e.

Next, the situation in the assembly of the first embodiment will be described. When assembling the valve member, the valve member is inserted into the cylindrical portion to which the coating is applied, with the convex portion facing forward. Although the convex portion of the valve member is in contact with the rear end surface of the middle cylinder portion of the coating destination, the valve seat portion of the coating destination is provided at an intermediate position of the middle cylinder portion. Therefore, even if the application destination is formed of a soft material, damage to the valve seat can be reduced and prevented. On the other hand, the valve portion of the valve member is incorporated while the tip of the valve member convex portion is guided to the inner peripheral surface of the cylindrical portion to be coated, and the valve member convex portion is guided to the center side by the middle cylindrical portion of the coating destination. Since the valve member is incorporated, even if the valve member is formed of a soft material, damage to the valve portion can be reduced and prevented. Next, the application action of the valve applicator will be described. When the application section of the application destination is pressed against the paper surface while pressing the container body, the application section bends. Simultaneously with the bending of the coating portion, the tip of the convex portion of the valve member hits the projection on the inside of the tip of the coating piece, and the valve portion connected to the convex portion retreats in the container direction against the elastic force of the elastic portion. And the valve separates from the valve seat to
The valve mechanism is opened. At this time, since the container body is pressed, the application liquid passes while the discharge amount is controlled by the liquid amount regulating section, passes through the opened valve, and is discharged onto the paper. During the process of using the applicator regularly and intermittently, the (dry) solid component of the built-in applicator gradually accumulates in the applicator member opening in front of the applicator valve pressure position, and the gap is in the initial state. Although the liquid component becomes narrower or the solid component (dried) accumulated in the gap is peeled off during use of the applicator, the arrangement position of the liquid amount regulating section that regulates the discharge amount of the application liquid narrower than the gap of the application member opening. Is disposed behind the valve press-contact position and is disposed in the dry-closed space in which the valve is closed, so that the coating liquid does not solidify (dry), so that the gap between the liquid amount regulating sections includes (dry) solid. No component accumulation phenomenon occurs. Since the (dry) solid component accumulation phenomenon does not occur in the liquid amount regulating portion which is the gap having the narrowest cross-sectional area, there is no occurrence of a reduction in the application liquid discharge amount and a non-uniform application liquid discharge amount phenomenon. still,
In the present embodiment, the structure is such that the container body is pressed to discharge the coating liquid, but the coating liquid to which the pressure increasing agent is added is incorporated,
Adopting a method that does not require pressing the container body,
A structure in which the inside of the container body is pressurized by the rear knocking operation may be adopted.

FIGS. 4 to 6 show a second embodiment. 4 shows a valve-equipped applicator excluding the container body and the cap, that is, a main section front view of an application destination, FIG. 5 shows a side view of FIG. 1, and FIG. 6 shows an enlarged detail of FIG. Reference numeral 12 denotes a front shaft formed of an inclined portion penetrating back and forth and having a flat tip and a conical shape toward the rear, and a tubular portion behind the inclined portion. The front shaft 12 has a coating surface 12d for spreading a substantially rectangular coating liquid on the front end surface, and further has two openings 12e opened in parallel inside the front end surface. Front shaft 1
The 2 opening 12e is provided with a valve seat 12f whose diameter increases in a slanting manner from the rear end toward the rear, and a cylindrical middle tube portion 12g is provided continuously with the valve seat 12f. Front shaft 12 middle cylinder 1
The rear end of 2 g is formed as an inclined conical surface. The outer side of the front shaft 12 has a prism shape at the rear from the front end surface, a substantially conical shape expanding at the rear, and a cylindrical shape at the rear. A female screw portion 12c is provided on the inner peripheral surface of the cylindrical portion behind the front shaft 12, and the inner step portion 1 having a horizontally reduced diameter is provided at the tip of the female screw portion 12c.
2h is provided, and the inner shape is made to be the outer shape toward the front. A gap is formed around the middle cylindrical portion 12g provided at the front inside the front shaft 12, and from the rear, a front is vertical and inclined in the middle as viewed from the side, a rectangular cross section is a rectangular rib in the front and rear direction. Guide inclined part 12i
Is provided. (See FIG. 5) From the middle of the inside of the front shaft 12, it penetrates the opening 12e on the front side,
Two generally cylindrical valve members 14 are arranged in parallel so as to protrude from the application portion 12d. Valve member 14
Is provided with a hemispherical tip portion 14f, and a valve portion 14b connected to the valve member 14 tip portion 14f so as to be in close contact with the front shaft 12 valve seat portion 12f to form a conical surface behind. The rear portion of the valve portion 14b is formed as a cylindrical front cylinder portion 14g, and four projections 14h are provided at the rear end of the front cylinder portion 14g so as to protrude in the radially enlarged direction. A rear cylinder 14j having a diameter smaller than that of the middle cylinder 14i is provided behind the middle cylinder 14i. The gap between the inner surface of the middle cylindrical portion 12g of the front shaft 12 and the outer surface of the cylindrical portion 14g at the end of the valve member 14 is defined as a liquid amount regulating portion 6. Liquid volume control section 6
Is smaller than the gap between the opening 12e of the front shaft 12 and the root diameter of the tip 14f of the valve member 14. Front shaft 12
A substantially cylindrical middle cylindrical body 7 that communicates is arranged inside.
At the front end of the middle cylinder 7, two front holes 7a, which are cylindrical openings whose diameter is reduced stepwise in the middle of the rear, are arranged in parallel so that the rear of the rear cylinder 14j of the valve member 14 can be inserted. Is provided. Medium hole portion 7b opened between these two front hole portions 7a
Is provided. Behind the front hole 7a, a cylindrical front tube 7c having a size including two arranged front holes 7a is provided.
A rear cylinder portion 7d having a larger diameter is provided behind the front cylinder portion 7c so that the rear end projects rearward from the rear end of the front shaft 12. A flange 7e having a flange-shaped diameter is provided at an intermediate front position before and after the outer periphery of the rear cylindrical portion 7d so as to contact the inner step 12h of the front shaft 12. From the protrusion 14h of the valve member 14 to the middle cylinder 7 at the rear, the middle cylinder 7 is fitted in a hole on the front side of the front hole 7a, and the middle cylinder 14i of the valve member 14 is fitted.
A coil spring 8, which is a compression spring formed of a stainless steel material, is arranged so as to wind around the rear cylindrical portion 14j. Note that the outer diameter of the coil spring 8 is
The inner diameter of the coil spring 8 is equal to the middle cylindrical portion 14i of the valve member 14.
, So that they can be mounted lightly.

Next, the situation in the assembly of the second embodiment will be described. First, a coil spring is inserted from the rear of the valve member, and two components mounted on the middle column portion of the valve member are assembled. Next, a coil spring having a valve member mounted therein is mounted in the inner hole having a reduced diameter in the front end portion of the middle cylinder body, and three members (the number of members is five) of the valve member, the coil spring, and the middle cylinder body are integrated. Assemble so that Furthermore, this integrated member is
The valve member is inserted from the front shaft rear side with the valve member at the front side, and assembled to a position where the flange portion of the middle cylindrical body abuts on the front shaft inner step. The assembling situation of the present invention is substantially the same as that of the first embodiment, and since the front shaft is provided with the middle cylindrical portion, even if the valve seat of the front shaft or the valve portion of the valve member is made of a soft material, Damage to the valve seat and valve surface can be reduced and prevented. In addition, since the guide inclined portion is provided in the forward portion of the front shaft 12, the valve member is inserted and assembled so as to be moved toward the center side, so that the valve portion can be further reduced and prevented from being damaged. The coating operation of this structure is also substantially the same as that of the first embodiment. When the tip of the valve member is pressed against a coating surface such as a paper surface against the resilience of the coil spring, the valve member valve portion is moved to the front shaft valve seat. The coating liquid from the container body is discharged from the container body to the surface to be coated while the discharge amount is controlled by the liquid amount regulating part. Since the liquid amount regulating portion is disposed behind the valve pressure contact position and the gap thereof is also smaller than the gap on the opening side, there is no occurrence of a decrease in the application liquid discharge amount and an uneven application liquid discharge amount.

FIGS. 7 and 8 show a third embodiment. FIG. 7 shows a front section of a main part of the coating section, and FIG. 8 shows a cross section taken along line AA of FIG. Reference numeral 22 denotes a front shaft that penetrates back and forth, and whose outer shape in cross section is a water droplet shape. The front shaft 22 has a shape in which the front end surface is depressed, and an opening 22 is formed in the center of the left large diameter side of the water drop shape.
e, a valve seat 22f whose diameter increases in a slanting manner rearward from the rear end of the opening 22e, and a cylindrical middle cylinder portion 22g is provided continuously with the valve seat 22f. A gap is formed between the periphery of the middle cylinder portion 22g and the outer shape portion, and a recessed groove is provided on the entire periphery behind the inner surface of the outer wall. Opening 2 from the inside of the front shaft 22
2e, a substantially cylindrical valve member 24 substantially similar to that of the second embodiment is disposed so as to protrude forward of the front shaft 22. The gap between the inner surface of the middle cylindrical portion 22g of the front shaft 22 and the outer surface of the cylindrical portion 24g at the tip of the valve member 24 is defined as a liquid amount regulating portion 6. The gap between the liquid amount regulating section 6 and the opening 22 e of the front shaft 22 is
4 is smaller than the gap with the root diameter of the leading end 24f.
An application body 9 such as a sponge, which is a continuous pore body having a liquid content, is arranged in a recess at the tip of the front shaft 22. On the left side of the application body 9, the tip portion 24 f of the valve member 24 fits,
A hole 9a is provided. (Refer to FIG. 7) Further, a substantially conical conical member 10 that communicates is disposed behind the middle cylindrical portion 22 g inside the front shaft 22. Conical member 1
At the front end, a hole is provided so as to fit around the rear end of the middle cylindrical portion 22g of the front shaft 22, and from the rear end to the rear, there is an inclined guiding inclined portion 10a with one side (right side in the front view) expanding rearward. Provided. A peripheral rib 10 b protruding outward is provided around the outer periphery of the outer side, and is fitted into a peripheral groove 22 h of the front shaft 22.

Next, the situation in the assembly of the third embodiment will be described. The assembly state of the present invention is substantially the same as that of the first embodiment except that a valve member equipped with a coil spring is inserted from the back of the front shaft to which the application body is fixed, and the front shaft is provided with a middle cylindrical portion. Even when the valve seat of the front shaft and the valve of the valve member are made of a soft material, it is possible to reduce and prevent damage to the valve seat and the valve surface during assembly. In addition, since the conical member provided with the guide inclined portion behind the front shaft middle cylinder portion is provided, the valve member is inserted and assembled so as to be brought closer to the hole side, so that the valve portion is more easily damaged. It can be further reduced and prevented.
The coating operation of the present structure is also substantially the same as that of the first embodiment. When the coating body is pressed against a coating surface such as paper, the coating body is compressed and deformed, and at the same time, the tip of the valve member arranged in the coating body is pressed. As a result, the valve portion separates from the valve seat portion of the front shaft against the resilience of the coil spring, and the application liquid from the container body is supplied to the application body while the discharge amount is controlled by the liquid amount regulating portion. Furthermore, the coating liquid stored in the coating body is
It is discharged on paper or the like. Since the liquid amount regulating portion is disposed behind the valve pressure contact position and the gap thereof is also smaller than the gap on the opening side, there is no occurrence of a decrease in the application liquid discharge amount and an uneven application liquid discharge amount.

[0014]

According to the valve-equipped applicator of the present invention, since the middle cylinder portion is provided behind the valve seat portion, it is possible to reduce and prevent damage to the valve seat portion and the surface of the valve portion. Further, since the liquid amount regulating portion is provided behind the valve pressure contact portion of the valve mechanism portion, there is no occurrence of a decrease in the application liquid discharge amount and an uneven application liquid discharge amount. In addition, since the wall thickness of the middle cylinder portion forming the liquid amount regulating portion can be made substantially uniform, it is possible to increase the dimensional accuracy, and it is also possible to vary the individual members during mass molding. Also less. As a result, it is possible to control the dimensions of the liquid amount regulating section to a high degree, and to reduce the variation in the liquid discharge amount of the valve-equipped applicator between products.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a first embodiment.

FIG. 2 is a side view of FIG.

FIG. 3 is an enlarged view of a main part of FIG.

FIG. 4 is a front sectional view of the second embodiment.

FIG. 5 is a side view of FIG.

FIG. 6 is an enlarged view of a main part of FIG.

FIG. 7 is a sectional view of a main part of a third embodiment.

8 is a sectional view taken along the line AA in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 2 Front shaft 12 Front shaft 22 Front shaft 3 Coating destination member 4 Valve member 14 Valve member 24 Valve member 5 Cap 6 Liquid volume regulation part 7 Middle cylinder 8 Coil spring 9 Application body 10 Conical member

Claims (2)

[Claims] A member having an application portion is mounted in front of an opening of a container body having an application liquid storage chamber therein, and a valve seat provided in the member having the application portion is pressed against the valve seat. In the valve-equipped applicator provided with a valve mechanism constituted by a valve member urged forward so as to be formed, the valve seat portion is formed on an inner surface of a cylindrical middle cylinder portion formed inside a member having an application portion. Further, a cylindrical front tube portion is provided behind the valve portion of the valve member, and at least a part of the cylindrical front tube portion is formed in a member having an application portion. Wherein the gap formed by the inner surface of the middle cylinder portion and the outer peripheral surface of the front cylinder portion serves as a liquid amount regulating portion. 2. A guide inclined portion for assembling and inserting a valve member, which is enlarged in an inclined manner, is provided at a rear portion of a tubular middle tubular portion formed inside a member having an application portion. An applicator with a valve as described.