JP2569937Y2 - Poppet for accumulator - Google Patents

Description

[Detailed description of the invention]

[0001]

[Purpose of the invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a poppet for an accumulator, and more particularly to a disk-shaped workpiece formed by pressing a plate-shaped material and then forming the disk-shaped workpiece into a workpiece with a cylindrical portion by pressing. The present invention relates to an accumulator poppet in which a work with a part is formed into a grooved work by press working and an inner cylindrical part of the grooved work is formed as a neck and a head by press working or roll working.

[0003]

2. Description of the Related Art Conventionally, as a poppet for an accumulator of this type, a bulk material or a rod material is cold forged to produce a grooved poppet body, and then the periphery of the poppet body is cut into a circle by press working. There has been proposed an apparatus in which a peripheral portion of a poppet body is formed into a smooth curved surface by cutting, and a neck and a head are cut out by cutting and finished into a smooth curved surface by another cutting.

[0004]

[Problems to be solved] However, in the conventional poppet for accumulators, there is a drawback that the manufacturing process becomes complicated because (i) cold forging, cutting, and pressing are mixed. (ii) Since the neck and the head are cut out by a cutting process and then finished by another cutting process into a smooth curved surface, there is a drawback that the number of cutting steps is large and the manufacturing cost cannot be reduced.

In order to eliminate these drawbacks, the present invention is to provide a poppet for an accumulator in which a flat material is formed only by pressing and then the neck and the head are finished by pressing or rolling. Is what you do.

[0006]

[Structure of device]

[0007]

A solution to the problem provided by the present invention is described as follows. "The bladder is attached to a bladder which divides the inner space of the shell into a gas chamber and a liquid chamber, and connects the liquid chamber to a liquid source. In a poppet for an accumulator that abuts against the periphery of the liquid chamber side opening of the liquid guide hole, a plate-shaped workpiece is formed into a disk-shaped workpiece by pressing, and then the disk-shaped workpiece is processed by pressing into a cylindrical part. A poppet for an accumulator, characterized in that the work having a cylindrical portion is formed into a grooved work by press working, and the cylindrical portion of the work having a groove is formed into a neck and a head by press working or roll working.

[0008]

[Action] The poppet for the accumulator according to the present invention is:
As clearly indicated in the above-mentioned [Solution to Problem] section, the liquid guide hole is attached to a bladder that partitions the internal space of the shell into a gas chamber and a liquid chamber, and connects the liquid chamber to the liquid source. A poppet for an accumulator which is brought into contact with the periphery of an opening on a liquid chamber side. In particular, a plate-shaped material is formed into a disk-shaped workpiece by press working, and then a disk-shaped workpiece is formed by pressing into a cylindrical workpiece. And the cylindrical part of the grooved workpiece is formed into a neck and a head by press processing or roll processing. (I) Press processing or press processing and roll processing (Ii) an operation of simplifying a manufacturing process and reducing a manufacturing time and a manufacturing cost.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an accumulator poppet according to the present invention.

However, the embodiments described below are:
It is described for facilitating or facilitating understanding of the present invention, and is not described for limiting the present invention.

In other words, each element disclosed in the embodiments described below includes all design changes and equivalent replacements that fall within the spirit and scope of the present invention.

(Description of the accompanying drawings)

[0013] Figure 1 is a partial cross-sectional perspective view for showing an embodiment of an accumulator poppet according to the present invention, in particular, molding a plate-shaped material M ₀ by pressing or pressing and rolling It is created by

FIG. 2 is a cross-sectional view showing a use state of the embodiment shown in FIG.

[0015] Figure 3 is a partial sectional view for showing a part of the manufacturing process of the embodiment shown in FIG. 1, in particular, gives a circular plate-shaped workpieces M ₁ by punching a plate-shaped material M ₀ 3 shows a pressing process for performing the following.

FIG. 4 is a partial sectional perspective view showing a part of the manufacturing process of the embodiment shown in FIG. 1. In particular, FIG.
Disk-shaped workpiece M created by the pressing process shown in FIG.
₁ is shown.

[0017] Figure 5 is a partial sectional view for showing a part of the manufacturing process of the embodiment shown in FIG. 1, in particular, by processing a disk-shaped workpieces M ₁ shown in FIG. 4 the head shows a pressing step for making a cylindrical portion with workpieces M ₂ having a cylindrical portion m that corresponds to the part and neck.

FIG. 6 is a partially sectional perspective view showing a part of the manufacturing process of the embodiment shown in FIG.
₂ shows a cylindrical workpiece M2 produced by the pressing process shown in FIG.

[0019] Figure 7 is a partial sectional view for showing a part of the manufacturing process of the embodiment shown in FIG. 1, in particular, the groove by working the cylindrical portion with circular plate M ₂ shown in FIG. 6 shows the pressing process for making a grooved workpiece M ₃ with 11A.

FIG. 8 is a partial sectional perspective view showing a part of the manufacturing process of the embodiment shown in FIG.
The grooved workpiece M ₃ produced by the pressing process shown in FIG.
Is shown.

[0021] Figure 9 is a partial sectional view for showing a part of the manufacturing process of the embodiment shown in FIG. 1, in particular, machining the cylindrical portion m of the grooved workpiece M ₃ shown in FIG. 8 And the accumulator poppet 10 shown in FIG.
3 shows a pressing step for producing the same.

[0022] FIG. 10 is a partial sectional view for showing a part of the manufacturing process of the embodiment shown in FIG. 1, in particular, machining the cylindrical portion m of the grooved workpiece M ₃ shown in FIG. 8 And the accumulator poppet 10 shown in FIG.
2 shows a roll process for producing the same.

(Configuration of Example)

First, an embodiment of the accumulator poppet according to the present invention will be described in detail with reference to FIG. 1 and FIG.

Reference numeral 10 denotes an accumulator poppet according to the present invention, which has at least one groove 11A on one surface (that is, a surface that is in contact with the liquid chamber side opening around the liquid guide hole 23).
Disk-shaped poppet body 11 formed with
A head 13 integrally formed with the other surface of the body 11 via a neck 12
And The neck 12 is formed to prevent the accumulator poppet 10 according to the present invention from falling off when the neck 12 is disposed on the bladder 22. By the way,
The neck 12 and the head 13 are arranged on the bladder 22 so that the bladder 22 does not crack when placed on the bladder 22.
The contact surface (i.e., the outer peripheral surface) is a smooth curved surface.

The periphery of the poppet body 11 is formed into a smooth curved surface by press working so as to prevent the bladder 22 from being damaged when the bladder 22 expands and contracts.

The outer peripheral surface of the neck 12 (particularly, the transition from the neck 12 to the poppet body 11 and the transition from the neck 12 to the head 13)
In order to prevent the bladder 22 from being damaged when the bladder 22 expands and contracts, it is formed into a smooth curved surface by pressing or rolling.

The outer peripheral surface of the head 13 is formed into a smooth curved surface by press working so as to prevent the bladder 22 from being damaged when the bladder 22 expands and contracts.

The accumulator poppet according to the present invention
10 is a gas chamber for the internal space of the shell 21 of the accumulator 20
The neck 12 or the head 13 is located at the center of the outer peripheral surface of the bladder 22 (that is, the center on the liquid chamber side) which is divided into the chamber 21A and the liquid chamber 21B.
When the pressure of the liquid source (not shown) decreases, the bladder 22 approaches the liquid chamber side opening of the liquid guide hole 23 around the liquid chamber side opening of the liquid guide hole 23. Can be contacted.

(Operation of Embodiment)

The operation of the embodiment of the accumulator poppet according to the present invention will be described in detail with reference to FIGS. 1 and 2. FIG.

An accumulator poppet according to the present invention
10, plate-shaped material M ₀ punched out by pressing a disc-shaped workpieces M _1, and disk-shaped workpieces M ₁ in the central portion cylindrical portion with the workpiece to form a cylindrical portion m by press working and M _2, and a grooved workpiece M ₃ to form at least one groove 11A by pressing on one side of the cylindrical portion with the workpiece M _2, and the outer peripheral surface of the cylindrical portion m of the grooved workpiece M ₃ Since it is manufactured by pressing and rolling to reduce the neck portion 12 as a smooth curved surface, it can be manufactured only by pressing or pressing and rolling, thereby simplifying the manufacturing process and manufacturing Time and manufacturing costs can be reduced.

The accumulator poppet according to the present invention
The liquid 10 is provided by embedding the neck 12 or the head 13 into the center of the outer peripheral surface of the bladder 22 provided in the internal space of the shell 21 of the accumulator 20 (that is, the center on the liquid chamber side). When the bladder 22 is to be brought into contact with the periphery of the liquid chamber side opening of the liquid guide hole 23 when the pressure of the source (not shown) decreases, the bladder 22 is brought into contact with the periphery of the liquid chamber side opening of the liquid guide hole 23, 22 is prevented from being sucked into the liquid guide hole 23.

(Manufacturing procedure)

In addition, with reference to FIG. 1 to FIG. 10, the manufacturing procedure of an embodiment of the accumulator poppet according to the present invention will be described.

The flat material M ₀ is made of the upper mold 31 A and the lower mold 31.
Pressed (ie stamped) by B
By, is a disk-shaped workpieces M _1.

The disk-shaped workpiece M ₁ is housed in the lower mold 32 B, and the center of the disk-shaped workpiece M ₂ is pressed by the upper mold 32 A to form a cylindrical section m, thereby forming a cylindrical workpiece M _2.
It is said.

[0038] Cylindrical portion workpiece M ₂ is housed inside the lower mold 33B, the upper die formed of a protrusion 33a corresponding to the groove 11A
By being pressing by 33A, it is a grooved workpiece M _3.

The grooved workpiece M ₃ are, are placed on the lower die 34B, the upper die 34A and the split mold 34C, the neck 12 and the head cylinder m the 34D has a sufficiently smooth curved surface is pressing By setting 13, the accumulator poppet 10 according to the present invention is obtained.

The grooved workpiece M ₃ is also an upper mold 35A and a lower mold.
While the upper mold 35A and the lower mold 35B are held on the roller 35B and rotated as shown by arrows W ₁ and W ₂ , the outer peripheral surface of the cylindrical portion m is rolled by the roll 36 rotated as shown by the arrow V. Neck 12 and head 13 with a sufficiently smooth curved surface
Thus, the accumulator poppet 10 according to the present invention is obtained.

(Modification)

In the above description, the grooved workpiece M ₃ is immediately processed by press working or roll working to form the neck 12.
And only the case where the head 13 is formed has been described,
This invention is not limited thereto, may form a processed into the neck portion and the head portion by press working or rolling After processing the periphery in a circular grooved workpiece M ₃ by press working subsumption doing.

[0043]

[Effects of the Invention] As is clear from the above description, the poppet for an accumulator according to the present invention is a [means for solving the problem].
As clearly indicated in the column, the inner space of the shell is attached to a bladder that divides the interior space into a gas chamber and a liquid chamber. A poppet for an accumulator to be in contact with, in particular, a plate-shaped material is formed into a disk-shaped workpiece by press working, and then the disk-shaped workpiece is formed into a workpiece with a cylindrical part by pressing and a workpiece with a cylindrical part is pressed. Since the grooved workpiece is formed by processing and the cylindrical part of the grooved workpiece is formed as a neck and a head by press working or roll processing, (i) there is an effect that it can be manufactured only by press processing or press processing and roll processing, As a result, (ii) the production process can be simplified and the production time and production cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional perspective view showing an embodiment of an accumulator poppet according to the present invention.

FIG. 2 is a sectional view showing a use state of the embodiment shown in FIG. 1;

FIG. 3 is a partial cross-sectional view showing a manufacturing process of the embodiment shown in FIG. 1;

FIG. 4 is a partial sectional perspective view showing a manufacturing process of the embodiment shown in FIG. 1;

FIG. 5 is a partial cross-sectional view showing a manufacturing step of the embodiment shown in FIG. 1;

FIG. 6 is a partial cross-sectional perspective view showing a manufacturing process of the embodiment shown in FIG. 1;

FIG. 7 is a partial cross-sectional view showing a manufacturing step of the embodiment shown in FIG. 1;

FIG. 8 is a partial sectional perspective view showing a manufacturing process of the embodiment shown in FIG. 1;

FIG. 9 is a partial cross-sectional view showing a manufacturing process of the embodiment shown in FIG. 1;

10 is a partial cross-sectional view for illustrating a manufacturing process of the embodiment illustrated in FIG. 1.

[Explanation of symbols] 10 ············································· ... Poppet body 11A ... Groove 12 ...・ Neck 13 ・ ・ ・ Head 20・ ・ ・ ・ ・ ・Accumulator 21 Shell 21A Gas chamber 21B・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Liquid chamber 22 ・ ・ ・ ・ ・ ・ ・ ・ ・ Bladder 23 ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Liquid guide holes 31A to 34A, 35A ・ ・ ・ ・ Upper die 31B to 34B, 35B ・ ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ Lower die 33a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Protrusion 34C, 34D ・ ・ ・ ・ ・ ・ ・ ・ ・ ・Split mold 36 Roll M ₀ ..Plate material M ₁ ····· Disc workpiece M ₂ ····· ······ Workpiece with cylindrical part M ₃ ······ Workpiece with groove m ······· ........... cylindrical part

Claims (1)

(57) [Scope of request for utility model registration] 1. A liquid guide hole, which is attached to a bladder that divides an inner space of a shell into a gas chamber and a liquid chamber and makes the liquid chamber communicate with a liquid source, is brought into contact with the periphery of an opening on the liquid chamber side. In a poppet for an accumulator, a plate-shaped material is formed into a disk-shaped workpiece by press working, then a disk-shaped workpiece is formed into a workpiece with a cylindrical portion by pressing, and a workpiece with a cylindrical portion is processed by pressing. A poppet for an accumulator, wherein a cylindrical portion of a grooved workpiece is formed as a neck and a head by press working or roll working.