JPH0533872U - Valve device for writing or applying liquid material - Google Patents

Abstract

(57) [Summary] [Purpose] A certain amount of liquid material is discharged by one valve opening and an appropriate amount of liquid material is supplied to the writing part or the application part, whereby the writing surface or the application surface is evenly distributed. (EN) Provided is a valve device for writing or applying a liquid material, which can be finished into a sheet. [Structure] A piston portion 10 provided at the front end portion of the valve rod 7,
The inner space 13 of the outer cylinder 1 is isolated by the flow restricting cylinder portion 3 provided at a position near the rear end inside the outer cylinder 1, and a certain amount of the liquid material contained in the inner space 13 is discharged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a valve device for attaching a liquid material such as ink, liquid cosmetics, liquid medicine, and adhesive to a device for writing or applying a liquid.

[0002]

[Prior Art]

 Conventionally, in this type of valve device, when the valve is opened, the liquid material is discharged in an indefinite amount according to the opening time and supplied to the writing section or the coating section.

Therefore, the amount of the liquid material passing through the valve opening is different depending on, for example, the length of the knocking operation time for opening the valve, or the magnitude of the pressure difference between the outside air and the container. The liquid material impregnated in the liquid has an excess or deficiency, and there is a problem that the liquid material drips from the writing portion or the coating portion, or the writing surface or the coating surface is scratched.

[0004]

[Problems to be solved by the device]

 Therefore, in the present invention, a certain amount of liquid material is discharged by one valve opening, and an appropriate amount of liquid material is supplied to the writing portion or the coating portion, thereby uniformly and uniformly finishing the writing surface or the coating surface. It is an object to provide a valve device for writing or applying a liquid material that can be used.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the valve device of the liquid writing / applying device of the present invention has a valve seat 2 in the position near the front end inside the outer cylinder 1 and a flow restricting cylinder in the position near the rear end. Each of the parts 3 is provided, and a deformed cylindrical part 5 having a non-circular cross section and a diameter of an inscribed circle of which is substantially the same as the inner diameter of the cylinder part 4 is continuously provided behind the valve seat 2 to control the cylinder part 4. At the rear end position of the outer tube 1 behind the flow tube section 3, a deformed through hole section 6 having a non-circular cross section and an inscribed circle diameter slightly larger than the inner diameter of the flow tube section 3 is provided. The valve rod 7 is housed inside so as to be movable in the front and rear directions, and the valve rod 7 is biased forward by the valve spring 8. At the front end of the valve rod 7, a sloped portion that can be in close contact with the valve seat 2 is provided. 9 is provided, and a piston portion 10 that can slide on the inner surfaces of the cylinder portion 4 and the deformed tubular portion 5 is provided on the rear side portion thereof, and the valve rod is also provided. The cross section at the rear end is non-circular, and the diameter of the circumscribing circle is smaller than the inner diameter of the flow restricting cylinder part 3 and the diameter of the inscribed circle of the irregular through hole part 6, and the sloped part 9 at the front end of the valve rod is the valve seat A deformed shaft portion 11 whose front end portion is located in front of the flow restricting cylinder portion 3 in a state of being in close contact with 2 is provided, and further, in front of the deformed shaft portion 11 of the valve rod 7, the cross section is circular and the valve rod 7 The configuration is characterized in that a columnar shaft portion 12 is provided, the side surface portion of which is brought into close contact with the flow control tubular portion 3 within the range in which the piston portion 10 slides on the cylinder portion 4 due to the retreat.

[0006]

[Action]

 With the front end slope 9 of the valve rod 7 in close contact with the valve seat 2 and the valve closed, in the inner space 13 of the outer cylinder 1, the flow restricting cylinder 3 and the deformed shaft 11 of the valve rod 7 are inserted. The liquid material flows in from the gap 14 formed therebetween. Then, when the valve rod 7 is retracted and the front end sloped surface portion 9 is separated from the valve seat 2 and the piston portion 10 is sliding on the cylinder portion 4, the side surface of the cylindrical shaft portion 12 of the valve rod 7 restricts the flow. By being in close contact with the cylindrical portion 3, the portion sandwiched between the piston portion 10 and the flow restricting cylindrical portion 3 in the internal space 13 of the outer cylinder 1 is isolated. When the valve rod 7 is further retracted, the piston portion 10 reaches the deformed cylindrical portion 5 and a gap 15 is formed between the piston portion 10 and the deformed cylindrical portion 5, so that the outer cylinder inner space 13 has a constant space existing at the isolated position. A certain amount of liquid material flows out through the gap 15 to the front, and is discharged as it is through the valve in the open state.

[0007]

【Example】

 Embodiments will be described below with reference to the drawings. First, only the front end and the rear end of the outer cylinder 1 are open, and at the rear end thereof, as shown in FIG. 2, the cross section is non-circular and the diameter of the inscribed circle of the deformed shaft portion 11 of the valve rod 7 is described later. A modified through hole 6 is provided which is slightly larger than the diameter of the circumscribing circle. Next, a spring bearing 16 is fixed inside the rear end of the outer cylinder 1 at a position in front of the odd-shaped through hole portion 6. The spring receiver 16 is provided with a flow control tube portion 3 around the center hole, and the inner diameter of the flow control tube portion 3 is set to be slightly smaller than the diameter of the inscribed circle of the deformed through hole portion 6. .. The spring receiver 16 may be integrally formed as a part of the outer cylinder 1 instead of being a separate component from the outer cylinder 1. Next, the inner cylinder 17 is fixed inside the outer cylinder 1 in a range from the front end to substantially the center, and the inner cylinder presser 18 is fixed at the front end position of the outer cylinder 1. The inner cylinder 17 and the inner cylinder presser 18 may be integrally formed without being separate parts. A valve seat 2 is provided at a position near the front end of the inner surface of the inner cylinder 17 so that the sloped surface 9 of the valve rod 7 can be brought into close contact therewith, a cylinder portion 4 is provided behind the valve seat 2, and a cylinder portion 4 is provided. As shown in FIG. 6, a deformed cylindrical portion 5 having a non-circular cross section and an inscribed circle whose diameter is substantially the same as the inner diameter of the cylinder portion 4 is continuously provided on the rear side. Next, the valve rod 7, which is housed in the outer cylinder 1 so as to be movable in the front-rear direction, is provided with a sloped portion 9 which can be brought into close contact with the valve seat 2 at the front end, and a thin skirt-shaped portion on the side surface portion slightly rearward thereof. Is provided with a piston portion 10 slidable on the inner surfaces of the cylinder portion 4 and the deformed tubular portion 5, and further, a rear surface portion thereof has a circular cross section and a side surface portion thereof can slide in close contact with the flow control tubular portion 3. A cylindrical shaft 12 is provided, and the cross-section is non-circular at the rear end as shown in FIG. 2, and the diameter of the circumscribed circle is the inner diameter of the flow restricting cylinder 3 or the inscribed circle of the irregular through hole 6. A deformed shaft portion 11 slightly smaller than the diameter is provided. The valve rod 7 is urged forward by a valve spring 8 interposed between the rear end of the piston portion 10 and the spring receiver 16, and normally, as shown in FIG. The state in which the valve is closed by keeping it in close contact with the seat 2 is maintained. In this state, the length of the deformed shaft portion 11 is set so that the front end of the deformed shaft portion 11 of the valve rod 7 is located slightly forward of the flow restricting cylinder portion 3. The rear end of a pipe member (not shown) arranged between the front end face of the valve rod 7 and a writing or coating core member (not shown) is in contact with the core member. The valve rod 7 is operated by knocking the front end of the member. Further, the outer cylinder 1 is adapted to be fitted into the front end portion of a tank (not shown) for containing the liquid material, so that the liquid material is transferred from the rear end deformed through hole portion 6 of the outer cylinder 1 to the outer cylinder. 1 will flow into the internal space 13.

Normally, the valve is closed while maintaining the state shown in FIG. 1, and the liquid flowing into the internal space 13 of the outer cylinder 1 through the gap 14 formed between the control cylindrical portion 3 and the deformed shaft portion 11. The body is full. Next, when the core member is knocked and the valve rod 7 is retracted, the inclined surface portion 9 is separated from the valve seat 2, and the piston portion 10 slides on the cylinder portion 4 and reaches a state slightly before reaching the rear end portion. Then, as shown in FIG. 4, the front end of the deformed shaft portion 11 of the valve rod 7 crosses over the flow restricting cylinder portion 3, and the side surface portion of the cylindrical shaft portion 12 comes into close contact with the restrict flow cylinder portion 3. Therefore, in this state, the liquid material is restricted from entering and exiting at a portion sandwiched between the piston portion 10 and the flow restricting cylinder portion 3 in the internal space 13 of the outer cylinder 1, and the liquid material is isolated by a substantially constant amount. When the valve rod 7 is further retracted, the piston portion 10 reaches the deformed tubular portion 5 as shown in FIG. 5, and passes through the gap 15 formed between the piston portion 10 and the deformed tubular portion 5 to separate the above-mentioned isolated portion. A certain amount of liquid flows out forward and passes through the valve. After that, when the knock of the core member is released, the state shown in FIG. 1 is restored.

[0009]

[Effect of the device]

 The present invention is as described above, and when the valve rod 7 is retracted, the liquid is isolated between the piston part 10 and the flow restricting cylinder part 3 in the inner space 13 of the outer cylinder 1 when the valve is opened. Since a substantially constant amount of the separated liquid material is discharged, the liquid material supplied to the writing part or the coating part can be adjusted to an appropriate amount, which allows the writing surface or the coating surface to be even. The effect is that it can be finished uniformly.

In addition, in the conventional valve device of this type, the deformed cylindrical portion 5 of the present invention is not continuously provided behind the cylinder portion 4, so that the piston portion 10 is replaced by the cylinder portion 4. There is a risk that the valve rod 7 will tilt in the radial direction when it passes through, and the tilt of the valve rod 7 will cause a gap in the rear flow restricting cylinder portion 3 to cause leakage of the liquid material. In order to prevent this, it is necessary to increase the contact pressure of the flow restricting tubular portion 3 against the valve rod 7, and therefore the operating resistance of the valve rod 7 increases and the valve spring 8 must also be strengthened. There was a problem of getting worse. However, according to the present invention, the deformed cylindrical portion 5 is provided especially behind the cylinder portion 4 and the deformed through hole portion 6 is provided at the rear end portion of the outer cylinder 1 to support the front and rear of the valve rod 7. Since the valve rod 7 is not tilted and is securely held in the central portion, the contact pressure of the flow restricting tubular portion 3 can be reduced and the force of the valve spring 8 can be weakened, which improves usability. There is also the effect.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a state in which a valve is closed.

FIG. 2 is a cross-sectional view taken along the line AA of FIG.

3 is a cross-sectional view taken along the line BB in FIG.

FIG. 4 is a vertical cross-sectional view showing a state where the liquid material is isolated inside the valve.

FIG. 5 is a vertical cross-sectional view of a state in which the liquid material isolated inside the valve is discharged forward.

6 is a cross-sectional view taken along the line CC of FIG.

[Explanation of symbols]

 1 Outer Cylinder 2 Valve Seat 3 Control Cylinder 4 Cylinder 5 Cylinder 5 Variant Cylinder 6 Variant Through Hole 7 Valve Bar 8 Valve Spring 9 Slope 10 Piston 11 Variant Shaft 12 Cylindrical Shaft 13 Internal Space 14 Gap 15 Gap 16 Spring receiver 17 Inner cylinder 18 Inner cylinder retainer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location B65D 83/00

Claims (1)

[Scope of utility model registration request] 1. A valve seat 2 is provided inside the outer cylinder 1 at a position closer to the front end, and a flow restricting cylinder portion 3 is provided at a position closer to the rear end, respectively. A deformed cylindrical portion 5 having a circular shape and the diameter of the inscribed circle is substantially the same as the inner diameter of the cylinder portion 4.
Is continuously provided, and the deformed through-hole portion 6 has a non-circular cross section and the diameter of the inscribed circle is slightly larger than the inner diameter of the flow restricting cylinder portion 3 at the rear end position of the outer cylinder 1 behind the flow restricting cylinder portion 3. Is provided, the valve rod 7 is housed inside the outer cylinder 1 so as to be movable in the front-rear direction, and the valve rod 7 is urged forward by the valve spring 8, and the valve seat 2 is attached to the valve seat 2 at the front end of the valve rod 7. A slanting surface portion 9 that can be in close contact is provided, and a piston portion 10 that can slide on the inner surfaces of the cylinder portion 4 and the deformed tubular portion 5 is provided around the rear side surface portion thereof, and the rear end of the valve rod 7 has a non-circular cross section. The diameter of the circumscribing circle is slightly smaller than the inner diameter of the flow restricting tube portion 3 and the diameter of the inscribed circle of the irregular-shaped through hole portion 6, and the slope portion 9 at the front end of the valve rod is in close contact with the valve seat 2. In this state, a deformed shaft portion 11 whose front end portion is located in front of the flow control tubular portion 3 is provided, and further, the deformed shaft portion 1 of the valve rod 7 is provided.
1 is provided with a columnar shaft portion 12 having a circular cross section and having a side surface portion thereof in close contact with the flow restricting cylinder portion 3 within a range in which the piston portion 10 slides on the cylinder portion 4 when the valve rod 7 retracts. A valve device for a writing or application tool of a liquid material.