KR20040018632A - Manufacturing method of ball seat - Google Patents

Abstract

PURPOSE: A ball seat manufacturing method is provided which is capable of mass-producing ball seat as minimizing unnecessary loss of material for the ball seat. CONSTITUTION: The ball seat manufacturing method comprises a cutting process (P0) of cutting a raw material supplied to cutting dies to a certain length using a cutting knife; a step forming process (P1) of inserting the cut material into first dies, and pressing the material to a punch part so that a step is formed between upper and lower sides of the material, and upper and lower parts of the material have different diameters; a head part preforming process (P2) of performing preparing operation for forming a head part of ball seat by restricting the two step formed material to second dies and pressing the material by the punch part; a head part forming process (P3) of forming an external shape of the head part as forming first hole inside a central part of the head part of the ball seat by inserting the material into third dies and pressing the preformed head part by the punch part; a ring part forming process (P4) of forming a rim having a certain height on the outer circumferential part of the head part by inserting the formed material into fourth dies and pressing the formed material by the punch part; a groove forming process (P5) of forming a plurality of grooves to be assembled into corresponding parts on the bottom of an outer side of the head part as preforming second hole connected to the first hole by inserting the formed material into fifth dies and pressing the formed material by the punch part; and a hole forming process (P6) of forming a completed product by inserting the material into sixth dies and further pressing the second hole formed in the groove forming process (P5), thereby forming a hole having a certain depth.

Description

MANUFACTURING BALL SHEET {MANUFACTURING METHOD OF BALL SEAT}

The present invention relates to a ball sheet manufacturing method, and more particularly to a ball sheet manufacturing method made possible to mass production while minimizing unnecessary loss of material.

In general, the fuel pressure regulator constituting the fuel supply device of an automobile is equipped with a ball valve actuated by pressure to maintain a constant fuel injection amount, and the ball valve is configured to be seated on the ball seat.

In order to manufacture such a ball sheet, a ball sheet is produced by a method by a so-called cutting process in which a round bar having a constant diameter is cut to a predetermined length to prepare a raw material, and the inner and outer diameters of the raw material are cut.

However, the conventional ball sheet manufacturing method by such a cutting process, by cutting the outer surface of the material cut to a certain length by lathe work to process the external shape of the ball sheet, the drilling machine so that the ball-shaped parts can be inserted By producing a ball sheet by processing a groove on one side of the material using, there is a problem that a lot of loss of the material removed by cutting or drilling occurs, as well as a lot of work time, productivity is reduced.

The present invention has been made to solve the conventional problems as described above, an object of the present invention to provide a ball sheet manufacturing method capable of mass production while minimizing unnecessary loss of material.

In order to realize the object of the present invention as described above, a cutting step of cutting the raw material supplied to the cutting die to a predetermined length using a cutting knife;

Inserting the cut material into the first dice and pressing the punch part to form a step between the upper side and the lower side of the raw material, wherein the upper and lower portions have different diameters;

A head preforming process, which is a preparatory operation for forming the head of the ball sheet by constraining the material formed in the second stage to a second dice and applying pressure to a punch part;

A head shaping step of inserting the material into a third dice and pressing the preformed head part with a punch part to mold the outer shape of the head part while forming a first hole inside the head part of the ball seat;

A ring part forming step of inserting the molded material into a fourth dice and pressing the punch part to form a rim having a predetermined height at an outer periphery of the head;

A groove forming step of inserting the molded material into a fifth dice and pressing a punch part to form a plurality of grooves for assembling with a counterpart on an outer bottom surface of the head while preforming the second hole communicating with the first hole;

Inserting the material into the sixth dice and further applying pressure to the second hole formed in the process provides a ball sheet manufacturing method comprising a hole molding process for molding a finished product by forming a hole of a predetermined depth.

The first to sixth dice and the first to sixth punch parts installed in a state corresponding thereto consist of sequential transfer dies installed in the same direction so that a complete ball sheet can be produced per one stroke.

1 is a process chart of the ball sheet manufacturing method according to the invention.

FIG. 2 is a plan sectional view illustrating a process of manufacturing a ball sheet according to the process of FIG. 1. FIG.

3 is a cross-sectional view of a ball sheet manufactured according to the manufacturing method of the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.

1 is a process diagram of a ball sheet manufacturing method according to the present invention, Figure 2 is a plan sectional view showing that the ball sheet is manufactured in accordance with the process of Figure 1, Figure 3 is a ball sheet manufactured according to the manufacturing method of the present invention As sectional drawing, the cutting process P0 which cuts the raw material 4 which is the metal material of the circular cross section supplied at the fixed speed | rate through the cutting die 2 by the cutting knife 6 by a fixed length is performed.

The raw material 4 may be generally one produced through hot and cold rolling.

The cutting of the raw material 4 is carried out by cutting the cutting knife with the driving force of a driving member (not shown) when the raw material 4 supplied through the cutting die 2 fixed to the fixed body is inserted into the cutting knife 6 by a predetermined length. 6) is done by working.

When the raw material 4 is cut by a predetermined length by the cutting knife 6 and a material M for producing a ball sheet is provided, the material M is first to sixth diced by a transfer device (not shown). The first to sixth punch portions 10b, 20b, 30b, 40b, 50b, and 60b, which are sequentially moved to 10a, 20a, 30a, 40a, 50a, and 60a and installed in a direction corresponding to the respective dice, are formed of the material ( Through the manufacturing process of FIG. 1 which presses M), the ball sheet is shape | molded in a predetermined shape as shown in FIG.

The material M is inserted into the first to sixth dice 10a, 20a, 30a, 40a, 50a, and 60a to pressurize the first to sixth punches 10b, 20b, 30b, 40b, 50b, and 60b. Grooves are respectively formed to serve as a mold in which molding is directly performed.

In addition, since the conveying device may be made of a tongs and tongs that are commonly used in the sequential transfer dice, detailed description thereof will be omitted.

When the cutting process (P0) is completed as described above, the cut material (M) is transferred to the first dice (10a) by the transfer device, the first dice (10a) is inserted into the material (M) to one side The die main body 12a which has a groove | channel so that it can be shape | molded, and the die pin 14a which is installed in the state which can be moved linearly in the longitudinal direction of the center part of the said die main body 12a, and supports the raw material M put on the main body 12a The first die is moved to the spacer 16a supporting the other side of the die pin 14a, and the material M is provided on the other side of the spacer 16a to move the molded material M to the next step. And a die knockout pin 18a which serves to push out at 10a.

Where the first dice 10a are opposed to each other, the first punch portion 10b for pressing the raw material M seated on the die body 12a and forming a predetermined shape is located.

The first punch portion 10b has a punch holder 12b and one side supported by the punch holder 12b and installed in a linear motion like the punch holder 12b to force down the material placed on the first dice 10a. A punch pin 14b and a spacer 16b accommodated in the punch holder 12b to support the punch pin 14b.

When the material M is transferred to the first dice 10a as described above, the punch pin 14b presses the material M in the forward direction of the first punch part 10b to perform the step forming step P1. In this process, the upper diameter of the material M is slightly larger and the lower diameter is slightly smaller, so that a step 100 is formed between the upper side and the lower side of the material M as shown in FIG. 3A. The upper side is molded into the head of the ball sheet through the process described below as a reference, and the lower side allows the transfer device to be picked up and transferred to the next process.

After the above end forming step P1, the first punch portion 10b retreats for the next step and the die knock-out pin 18a pushes the spacer 16a to move the die pin 14a to move the die body. The material M constrained in the state formed in the 12a is pushed out of the first dice 10a, and at this time, a transfer device (not shown) outside the first dice 10a holds the material M. Transfer to the front of the second dice 20a.

The second die 20a has a groove whose upper diameter is larger than the lower diameter, and is installed in the main body 22a and the main body 22a in a state capable of linearly moving in the longitudinal direction of the center portion of the die main body 22a. Next, the die pin 24a for supporting the placed material M, the spacer 26a for supporting the other side of the die pin 24a and the other end of the spacer 26a are formed, and then the molded material M is next. And a die knockout pin 28a, which serves to push the material M out of the second die 20a to move to the process.

Where the second dice 20a are opposed, the second punch portion 20b for pressing and molding the material M seated on the main body 22a of the second dice 20a is located.

The second punch part 20b is formed of a punch holder 22b and one side supported by the punch holder 22b and installed on the second die 20a so as to be linearly movable like the punch holder 22b. A punch pin 24b for pressing M) so that the upper portion of the material M has a predetermined shape, and a spacer 26b accommodated in the punch holder 22b to support the punch pin 24b. .

When the material M of which the molding process P1 is completed is transferred to the second dice 20a as described above, the punch pin 24b moves the material M to the second dice by the operation of the second punch part 20b. The head preforming step (P2) is performed to push down the main body (22a) of the 20 (20a) to be pre-molded in the upper portion of the material (M) as shown in Figure 3b as shown in Figure 3b. .

In this process, the raw material M is compressed while the volume is changed by pressing the punch pin 24b and the support of the die pin 24a to compress the main body 22a and the second punch part 20b of the second dice 20a. The head part 200 is preformed while changing to a shape corresponding to the shape of the head part 200.

When the head preforming process P2 is completed as described above, the second punch portion 20b is retracted for the next process and the spacer 26a is pushed by the die knock-out pin 28a for the next process. 24a) moves the material M constrained in the shape of the die body 22a to the outside of the second dice 20a, and at this time, a conveying device (not shown) located outside the second dice 20a. Holds the workpiece (M) and transfers it in front of the third dice (30a).

The third dice 30a are installed in a state in which the die main body 32a having a groove for inserting and molding the raw material M and the linear movement in the longitudinal direction of the center portion of the die main body 32a is installed and the main body 32a. Die-spin 34a for supporting the raw material M placed on the upper side, a spacer 36a for supporting the other side of the die pin 34a, and a raw material M formed on the other side of the spacer 36a. And a die knock-out pin 38a, which serves to push the material M out of the third dice 30a to move the material to the next process.

Where the third dice 30a are opposed to each other, the third punch portion 30b for pressing and molding the material M seated on the die body 32a into a predetermined shape is located.

The third punch part 30b is formed of a punch holder 32b and a material supported on the punch holder 32b by one side and installed in a linear motion such as the punch holder 32b to be placed on the third dice 30a. A punch pin 34b for pressing down, and a spacer 36b accommodated in the punch holder 32b to support the punch pin 34b.

When the material M of which the head preforming process P2 is completed is transferred to the third dice 30a as described above, the punch pin 34b removes the material M by the operation of the third punch part 30b. When the head forming step (P3) is performed by pushing down the main body 32a of the 3 dice 30a, the upper part of the raw material M is molded into the shape of the head part 200 of the ball seat as shown in FIG. The primary hole 300 is formed in the upper portion of the 200.

When the head forming step P3 is completed, the third punch part 30b retreats for the next step and the die knock-out pin 38a pushes the spacer 36a to move the die pin 34a. While pushing the material (M) constrained in the shape of the die main body (32a) to the outside of the third dice (30a), at this time, the transfer device (not shown) that was outside the third die (30a) is the material (M) ) And transfer it in front of the fourth dice 40a.

The fourth dice 40a includes a die main body 42a and a die spin that is installed in a state capable of linearly moving in the longitudinal direction of the center portion of the die main body 42a and supports the material M placed on the main body 42a ( 44a), a spacer 46a for supporting the other side of the die pin 44a, and a material M in order to move the formed material M to the next step, which is provided on the other side of the spacer 46a. And a die knock-out pin 48a, which serves to push out the four dice 40a.

Where it faces the fourth dice 40a, the fourth punch portion 40b forcibly pressing the material M seated on the main body 42a of the second dice 40a to change the volume to form a predetermined shape. ) Is located.

The fourth punch part 40b is formed of a punch holder 42b and one side supported by the punch holder 42b and installed on the fourth die 40a so as to be linearly movable like the punch holder 42b. A punch pin 44b for pressing M) so that the upper portion of the material M has a predetermined shape, and a spacer 46b accommodated in the punch holder 42b to support the punch pin 44b. .

When the material M of which the head forming step P3 is completed is transferred to the fourth dice 40a as described above, the punch pin 44b moves the material M to the fourth by operation of the fourth punch part 40b. It pushes in and presses into the main body 42a of the die 40a, and performs ring part shaping | molding process P4.

In this process, the material M changes in volume due to the pressing of the punch pin 44b and the support of the die pin 44a, and thus, the body 42a and the fourth punch portion 40b of the fourth die 40a. The ring portion 400 formed integrally with the head portion 200 is molded in the outer periphery of the head portion 200 as shown in FIG. 3D while changing to a shape corresponding to the shape.

When the above process is completed, the fourth punch part 40b is retracted for the next process, and the die body 44 is moved by pushing the spacer 46a by the operation of the die knockout pin 48a to move the die pin 44a. The material M constrained in the shape of 42a is pushed out of the fourth dice 40a, and at this time, the transfer device (not shown) outside the fourth dice 40a holds the material M. It transfers to the 5th dice 50a.

The fifth dice 50a are provided with a die main body 52a and a die spin which is installed in a state capable of linearly moving in the longitudinal direction of the center portion of the die main body 52a and supports the material M placed on the main body 52a ( 54a), the spacer 56a supporting the other side of the die pin 54a, and the other material of the spacer M, which are provided on the other side of the spacer 56a, are moved to the next step. And a die knock-out pin 58a, which serves to push out the five dice 50a.

Where the fifth die 50a is opposed to the fifth punch portion 50b for pressing the material M seated on the main body 52a of the fifth dice 50a to change the volume to form a predetermined shape. ) Is located.

The fifth punch part 50b is formed of a punch holder 52b and one side supported by the punch holder 52b and installed in a linear motion like the punch holder 52b and placed on the fifth dice 50a. A punch pin 54b for pressing the M) to have a predetermined shape, and a spacer 56b accommodated in the punch holder 52b to support the punch pin 54b. .

When the material M is transferred to the fifth dice 50a as described above, the punch pin 54b moves the material M to the main body 52a of the fifth dice 50a by the operation of the fifth punch part 50b. The groove forming step (P5) is carried out while pushing down.

In this process, the material M changes in volume due to the pressing of the punch pin 44b and the support of the die pin 44a, and thus, the body 52a and the fifth punch part 50b of the fifth die 50a. While changing to a shape corresponding to the shape, the secondary hole 500 extending from the primary hole 300 formed in the head forming process (P2) is preformed, the ball of the present invention on the bottom surface of the head 200 A plurality of grooves 600 are molded to allow the seat to be firmly assembled with other parts.

When the above process is completed, the fifth punch unit 50b is retracted for the next process, and the die body 54 is moved by pushing the spacer 56a by the operation of the die knockout pin 58a to move the die pin 54a. The material M constrained in the state formed by the 52a is pushed out of the fifth dice 50a, and the transfer device (not shown) outside the fifth dice 50a holds the material M. It transfers to the 6th dice 60a.

The sixth dice 60a are provided with a die main body 62a and a die spin that is installed in a state capable of linearly moving in the longitudinal direction of the center portion of the die main body 62a and supports the material M placed on the main body 62a ( 64a, a spacer 66a supporting the other side of the die pin 64a, and a die provided on the other side of the spacer 66a to push the molded material M out of the sixth dice 60a. And knockout pins 68a.

Where the sixth dice (60a) is opposed to the sixth punch portion (60b) for forming a predetermined shape by changing the volume by forcing the material (M) seated on the main body 62a of the sixth dice (60a) ) Is located.

The sixth punch part 60b is formed of a punch holder 62b and one side of which is supported by the punch holder 62b so as to be linearly movable like the punch holder 62b and placed on the sixth dice 60a. A punch pin 64b for pressing (M) down to have a predetermined shape, a spacer 66b accommodated in the punch holder 62b to support the punch pin 64b, and one side of the spacer 66b. It has a punch knockout plate 70 which is installed in contact with this face.

On the outer side surface of the punch knockout plate 70, a pin (not shown) is provided to hit the punch knockout plate 70 so that the molded material M can fall from the punch pin 64b. To this end, the punch knockout plate 70 is in surface contact with the inner side of the punch knockout plate 70, and a punch knockout pipe 72 is installed in the longitudinal direction of the punch holder 62b.

The punch knockout pipe 72 is positioned to receive the elasticity of the elastic member 74 disposed between the protrusion formed on one side of the pipe 72 and the punch holder 62b. The punch knockout pipe 72 is one side. Is coupled to the bolt 76 on the outside of the punch holder 62b so that the knockout pipe 72 can be maintained.

In addition, the coupling member 78 is coupled to the bolt 76 fixed to the outside of the knockout pipe 60, and the sleeve 80 is assembled with the punch pin 24d wrapped through the coupling member 78. have.

When the material M is transferred to the sixth dice part 60a main body 62a as described above, the material M is pushed down by the punch pin 64b provided in the sixth punch part 60b to form a hole forming step ( P6) is performed, and the secondary hole 500 preformed in the groove forming process P5 is extended to form the second hole 500 communicating with the first hole 300 as shown in FIG. 3F. The production of the ball seat is completed.

Since the punch pin 64b is inserted into the material M at a predetermined depth during the hole forming process P6, the material M is inserted into the punch pin 64b when the punch part 60b is retracted. Will be followed.

Therefore, the material M inserted into the punch pin 64b needs to be pulled out. For this purpose, when the punch part 60b is retracted, a pin (not shown) formed on one side of the punch part 60b is punched out. When hitting 70, this punch knockout plate 70 pushes the punch knockout pipe 72.

With this action, the sleeve 80 assembled by pushing the punch knockout pipe 72 and the connecting member 78 is pushed out, and the finished material M is removed from the punch pin 64b.

The ball sheet thus manufactured may remove foreign substances through ultrasonic cleaning, and then may be cut to a required length through molding, or may be formed with holes or plated as necessary.

At the time of manufacturing such a ball sheet, since the volume of the raw material M is molded in each step, the structure of the ball sheet becomes dense and more firm.

In the above-described end forming step (P1), head preforming step (P2), head forming step (P3), ring forming step (P4), groove forming step (P5), hole forming step (P6) to be fixed The first to sixth dice 10a, 20a, 30a, 40a, 50a, 60a and the dice 10a, 20a, 30a, 40a, 50a and 60a provided in a constant direction. The first to sixth punch parts 10b, 20b, 30b, 40b, 50b, and 60b which are located to correspond to each other are operated at the same time so that all processes are performed at the same time.

And the movement of the material (M) in each process as mentioned above may be used a method commonly used in sequential transfer die.

As described above, the ball sheet manufacturing method according to the present invention forms a product by pressing the raw material, so that there is no loss of material removed by the conventional cutting process, and the cost is greatly reduced.

In addition, even if the material for manufacturing the ball sheet is not uniformly cut, the volume of the material is compressed to have a uniform thickness, and at the same time provides a high strength to the material provides a product reliability.

And all the processes are done at the same time to mass production in a short time to maximize the productivity.

Claims (3)

In order to provide a ball seat provided to the fuel pressure regulator constituting the fuel supply of the vehicle, A cutting step of cutting the raw material supplied to the cutting die into a predetermined length using a cutting knife; Inserting the cut material into the first dice and pressing the punch part to form a step between the upper side and the lower side of the raw material, wherein the upper and lower portions have different diameters; A head preforming process, which is a preparatory operation for forming the head of the ball sheet by constraining the material formed in the second stage to a second dice and applying pressure to a punch part; A head shaping step of inserting the material into a third dice and pressing the preformed head part with a punch part to mold the outer shape of the head part while forming a first hole inside the head part of the ball seat; A ring part forming step of inserting the molded material into a fourth dice and pressing the punch part to form a rim having a predetermined height at an outer periphery of the head; A groove forming step of inserting the molded material into a fifth dice and pressing a punch part to form a plurality of grooves for assembling with a counterpart on an outer bottom surface of the head while preforming the second hole communicating with the first hole; And inserting the material into the sixth dice and further applying pressure to the second hole formed in the process to form a hole having a predetermined depth, thereby forming a completed product. The method according to claim 1, wherein the first to sixth dice and the first to sixth punch portion installed in a state corresponding thereto consists of a sequential transfer die installed in the same direction so that one complete ball sheet can be produced per stroke. Ball sheet manufacturing method characterized in that. The method of claim 1, wherein in the hole forming process, when the pin formed on one side of the punch portion hits the punch knockout plate, the punch knockout plate pushes the punch knockout pipe to connect with the punch knockout pipe. A method for producing a ball seat, comprising: removing a fabricated material from a punch pin by pushing a sleeve assembled by moving a member.