JP4564990B2 - Manufacturing method of valve support - Google Patents

Description

  The present invention relates to a method of manufacturing a valve support used for a valve-equipped pipe joint called a coupler, for example.

  2. Description of the Related Art Conventionally, pipe joints with valves called couplers or the like are known as joints of pipes used in hydraulic equipment and the like through which fluids such as water and oil flow (for example, Patent Document 1, Patent Document 2, Patent Document). 3). For example, as shown in FIGS. 9 and 10, the valve-equipped pipe joint is configured by a combination of a male joint 110 called a nose and a female joint 120 called a body.

  More specifically, the male joint 110 has a cylindrical male cylinder 11 referred to as a nose body, and the inner peripheral surface 11a of the male cylinder 11 forms a flow path L1. Similarly, the female joint 120 has a cylindrical female cylinder 21 called a body body, and the inner peripheral surface 21a of the female cylinder 21 forms a flow path L2. The male cylindrical body 11 and the female cylindrical body 21 thus configured are, for example, screwed while fitting the distal end portion 11A of the male cylindrical body 11 into the opening formed by the inner peripheral surface 21A of the distal end portion of the female cylindrical body 21. Alternatively, they can be fixed and connected by an appropriate method such as using a connecting mechanism 70 as shown in the drawing.

  Further, the male joint 110 and the female joint 120 are provided with valves 30 called poppet valves or the like in the flow paths L1 and L2, respectively. The valve 30 includes a tapered (conical) head portion 31 called a poppet and the like, and a head portion 31 extending from the head portion 31 to the side opposite to the other cylinders 11 and 21, that is, the proximal end side. Also has a small-diameter shaft portion 32. The other cylinders 11 and 21 mean the female cylinder 21 in the valve 30 provided in the flow path L1 and the male cylinder 11 in the valve 30 provided in the flow path L2.

  Furthermore, the male joint 110 and the female joint 120 are provided with a support tool 40 of the valve 30 called a poppet guide or the like in the flow paths L1 and L2. As shown in FIGS. 11 and 12, the valve support 40 includes a first cylindrical portion 41 that is inscribed in the inner peripheral surfaces 11 a and 21 a of the cylindrical bodies 11 and 21 and a shaft portion 32 of the valve 30. A second cylindrical portion 43 having a smaller diameter than the first cylindrical portion 41. In addition, the valve support 40 has a bridging portion 42 connected to the first cylindrical portion 41 and the second cylindrical portion 43. The bridging portion 42 is connected to the leading edge of the first cylindrical portion 41 and has a flat plate shape that crosses the opening edge 41a formed by the leading edge in the diameter direction. In addition, the bridging portion 42 is connected to the base end edge of the second cylindrical portion 43 at the center portion, and thus the width X of the bridging portion 42 can support the second cylindrical portion 43 reliably. The diameter of the second cylindrical portion 43 is substantially the same. Further, a hole having the same shape as the opening edge 43 a formed at the base end edge of the second cylindrical portion 43 is formed in the bridging portion 42, and this hole is also circumscribed to the shaft portion 32 of the valve 30. It has become.

  As shown in FIGS. 9 and 10, the base end edge of the first cylindrical portion 41 of the valve support 40 configured as described above is formed on the inner peripheral surfaces 11 a and 21 a of the cylindrical bodies 11 and 21. 11a and 21a are hooked on an annular hooking ring 9 fitted so that the inner periphery protrudes. In addition, this latching is performed using, for example, a C-type retaining ring, a spiro lock, or the like, or using a protruding portion in which a part of the inner peripheral surfaces 11a and 21a is reduced in diameter. There are also.

  With the above-described latching, the valve support 40 is fixed so as not to move toward the proximal end with respect to the cylinders 11 and 21. On the other hand, the shaft portion 32 of the valve 30 is inserted into the second cylindrical portion 43 of the valve support 40. Therefore, the shaft portion 32 is supported by the valve support 40 so as to be movable in the axial direction.

  Further, the male joint 110 and the female joint 120 are provided with a biasing member 8 made of a coiled spring or the like in the flow paths L1 and L2. The biasing member 8 is interposed between the distal end side surface of the bridging portion 42 of the valve support 40 and the bottom surface (base end side surface) of the head portion 31, and circumscribes the second cylindrical portion 43. Accordingly, the head portion 31 is urged toward the other cylinders 11 and 21 by the urging member 8. As shown in FIG. 9, this biasing causes the flow path L <b> 1 when the distal end portion 11 </ b> A of the male cylindrical body 11 is not inserted into the opening of the female cylindrical body 21 (when the insertion is removed). , L2 is closed. More specifically, the inner peripheral surfaces 11a and 21a of the cylinders 11 and 21 that form the flow paths L1 and L2 are provided with reduced diameter portions 12 and 22 that protrude toward the axial center side (inward). . When the head portion 31 is urged toward the other cylinders 11 and 21 and moves to the distal end side, the inner peripheral surfaces of the reduced diameter portions 12 and 22 and the tapered surface of the head portion 31 come into contact with each other. The flow paths L1 and L2 are closed by the contact.

  On the other hand, as shown in FIG. 10, in a state where the distal end portion 11 </ b> A of the male cylindrical body 11 is fitted into the opening of the female cylindrical body 21, both the flow paths L <b> 1 and L <b> 2 are in communication. More specifically, first, in a state where the fitting is removed, as shown in FIG. 9, the distal end portion of one head portion 31 has a reduced diameter portion 12 formed on the inner peripheral surface 11 a of the male cylindrical body 11. Projecting from the distal end surface, the distal end portion of the other head portion 31 projects from the distal end surface of the reduced diameter portion 22 formed on the inner peripheral surface 21 a of the female cylindrical body 21. Further, in the inserted state, as shown in FIG. 10, the distal end surface of the reduced diameter portion 12 formed on the inner peripheral surface 11 a of the cylindrical body 11 and the reduced diameter portion 22 formed on the inner peripheral surface 21 a of the cylindrical body 21. The front end surface of this is abutted and positioned. Therefore, in the inserted state, both heads 31 and 31 are pressed against each other, and both the heads 31 and 31 are separated from the reduced diameter portions 21 and 22 by this pressing, so that both flow paths L1 and L2 are communicated.

The valve-equipped pipe joint 100 configured as described above is easy to connect the male joint 110 and the female joint 120 and is already widely used. However, the valve support 40 has the following problems. Has been.
That is, the conventional valve support 40 needs to be manufactured by cutting or the like, which increases the manufacturing cost. Moreover, as is apparent from FIG. 11, in the conventional valve-equipped pipe joint 100, the bridging portion 42 of the valve support 40 has a large resistance, so the pressure loss of the fluid flowing through the flow paths L1 and L2 is large. On the other hand, if the width X of the bridging portion 42 is narrowed to reduce this pressure loss, the integrated strength of the first cylindrical portion 41 and the second cylindrical portion 43 cannot be maintained, and the valve 30 ( The moving direction of the shaft portion 32) may be inclined with respect to the axial direction. When the moving direction of the valve 30 is inclined, the inner peripheral surfaces of the reduced diameter portions 12 and 22 and the tapered surface of the head portion 31 do not come into full contact with each other even if the valve 30 moves toward the tip side, and the flow paths L1 and L2 Will not be completely blocked.

  On the other hand, as a conventional valve support 40, there is also a valve support 50 shown in FIGS. The valve support 50 includes a cylindrical portion 51 that circumscribes the shaft portion 32 of the valve 30, and a circle that protrudes radially from the cylindrical portion 51, and the protruding end portion is inscribed in the inner peripheral surfaces 11 a and 21 a of the cylindrical bodies 11 and 21. In the illustrated example, there are four protrusions 52, 52... In the valve support 50 thus configured, the protruding portion 52 protrudes from the locking ring 9. By this latching, the valve support 50 is fixed to the cylinders 11 and 21 so as not to move toward the base end side. On the other hand, the shaft portion 32 of the valve 30 is inserted into the cylindrical portion 51 of the valve support 50. Therefore, the shaft portion 32 is supported by the valve support 50 so as to be movable in the axial direction.

  Further, in the case of this valve support 50, the urging member 8 is interposed between the protrusion 52 of the valve support 50 and the bottom surface (base end side surface) of the head 31 and circumscribes the cylindrical portion 51. Thereby, the head part 31 is urged | biased by the other cylinders 11 and 21 side by the urging | biasing member 8, and the function similar to the valve fitting 100 mentioned above is exhibited.

  However, this conventional valve support 50 needs to be manufactured by metal sintering or the like, and like the conventional valve support 40, the manufacturing cost increases. Moreover, as apparent from FIG. 13, even if the valve support 50 is used, the pressure loss of the fluid flowing through the flow paths L <b> 1 and L <b> 2 is large because the protrusion 52 becomes a resistance. If the width Y of the projection 52 is reduced to reduce this pressure loss, the strength of the projection 52 cannot be maintained, and as a result, the moving direction of the valve 30 (shaft portion 32) is inclined with respect to the axial direction. The same problem as in the support tool 40 (the possibility that the flow paths L1 and L2 may not be completely blocked) occurs.

In addition, the members constituting the male joint 110 and the female joint 120, such as the cylinders 11 and 21 and the valve 30, have a certain degree of versatility, and have already established a production line. Exists. Therefore, for example, as shown in Patent Document 4, the pressure loss is not reduced by improving the shape of the valve itself, but the valve supports 40 and 50 are improved while using the conventional valve as it is. It is desirable to reduce pressure loss. Moreover, since the sizes of the members such as the cylinders 11 and 21 and the valve 30 are not always constant, it is desirable that the improved valve support has a structure in which the size can be easily changed.
JP-A-8-320092 JP 2004-1009044 A JP 2006-105285 A JP-A-11-201358

  The main problem to be solved by the present invention is that it is possible to obtain a valve support with reduced pressure loss and sufficient strength while being able to reduce the manufacturing cost, and preferably to easily change the size. An object of the present invention is to provide a method for manufacturing a valve support.

  The present invention that has solved this problem is as follows.

[Invention of Claim 1 ]
A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
In each of the two flow paths, a head and a valve having a shaft portion having a smaller diameter than the head extending from the head to the opposite side of the other cylinder, and the other cylinder of the head An urging member that is arranged on the opposite side and urges the head toward the other cylindrical body,
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, and by this pressing, the both heads are separated from the reduced diameter portion and the both flow paths communicate with each other. Yes,
A method of manufacturing the valve support that is fixed to the cylindrical body with the urging member interposed between the head and the shaft portion so as to be movable in the axial direction,
One cylindrical metal pipe is plastically deformed, and the deformed metal pipe is repeatedly cut at intervals in the axial direction of the metal pipe with reference to the length of the valve support. From the pipe,
A shaft passing part that surrounds the shaft part so as to be movable in the axial direction along the peripheral surface of the shaft part, and a bridge that extends from both ends of the pair of shaft passing parts to the inner peripheral surface. A connecting portion and a base portion that is connected to the respective distal end portions of the adjacent adjacent extending portions that extend from different shaft passing portions and that extends along the inner peripheral surface; and
A plurality of valve supports, each of which has a valve shape in which the cross-sectional direction of the flow path is thin, are the shaft passing part, the bridge part, and the base part,
The plastic deformation process is
The metal pipe, from both sides, on the surface on the metal pipe side, an edge formed along the shaft passing part, an edge formed along the bridge part connected to the edge, and the edge Having a step of deforming by sandwiching between a pair of molds in which a concave portion formed of a combination of edges formed along the base to be connected is formed,
The manufacturing method of the valve support characterized by the above-mentioned .

[Invention of Claim 2 ]
A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
In each of the two flow paths, a head and a valve having a shaft portion having a smaller diameter than the head extending from the head to the opposite side of the other cylinder, and the other cylinder of the head An urging member that is arranged on the opposite side and urges the head toward the other cylindrical body,
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, and by this pressing, the both heads are separated from the reduced diameter portion and the both flow paths communicate with each other. Yes,
A method of manufacturing the valve support that is fixed to the cylindrical body with the urging member interposed between the head and the shaft portion so as to be movable in the axial direction,
One cylindrical metal pipe is plastically deformed, and the deformed metal pipe is repeatedly cut at intervals in the axial direction of the metal pipe with reference to the length of the valve support. From the pipe,
A shaft passing part that surrounds the shaft part so as to be movable in the axial direction along the peripheral surface of the shaft part, and a bridge that extends from both ends of the pair of shaft passing parts to the inner peripheral surface. A connecting portion and a base portion that is connected to the respective distal end portions of the adjacent adjacent extending portions that extend from different shaft passing portions and that extends along the inner peripheral surface; and
A plurality of valve supports, each of which has a valve shape in which the cross-sectional direction of the flow path is thin, are the shaft passing part, the bridge part, and the base part,
The plastic deformation process is
The metal pipe is formed on a metal mold, along an edge formed along the shaft passing part, along an edge formed along the crossing part connected to the edge, and along the base connected to the edge. Having a step of deforming the shaped edges by passing them through a hole having a shape that is axisymmetrically combined;
The manufacturing method of the valve support characterized by the above-mentioned .

  According to the present invention, there is provided a method for manufacturing a valve support that can reduce the pressure loss and obtain a valve support having sufficient strength while reducing the manufacturing cost.

  Next, an embodiment of the present invention will be described. As shown in FIGS. 1 and 2, the valve-equipped pipe joint 1 of the present embodiment is configured by substantially the same members as the conventional valve-equipped pipe joint 100 (the same members are denoted by the same reference numerals). ), Except that the conventional valve supports 40 and 50 are changed to the valve support A of the present embodiment. Therefore, in the following, first, only the supplementary explanation that has not been described above will be given to the valve-equipped pipe joint 1 in general, and then the valve support according to the present embodiment and the manufacturing method thereof will be described in detail.

(Fitting with valve)
As shown in FIGS. 1 and 2, the valve-equipped pipe joint 1 according to the present embodiment is configured by a combination of a male joint 2 called a nose and a female joint 3 called a body. The male joint 2 and the female joint 3 correspond to the conventional male joint 110 or female joint 120 described above.

  The connection method of the male joint 2 and the female joint 3 is not specifically limited, For example, the male cylinder body 11 and the female cylinder body 21 can be fixed, for example, by screwing. However, in the present embodiment, from the viewpoint of easy connection, a method of fixing and connecting using the connecting mechanism 70 is adopted. The connecting mechanism 70 has a connecting cylinder 71 called a collar or the like provided coaxially and circumscribed at the tip of the female cylinder 21. The connecting cylinder 71 is thick at the distal end and thin at the proximal end, and a biasing member 72 made of a coiled spring or the like is provided between the inner peripheral surface of the thin portion and the outer peripheral surface of the female cylinder 21. Intervened. The urging member 72 is engaged with a step portion between the thick portion and the thin portion of the connecting cylinder 71 and urges the connecting cylinder 71 toward the distal end side. However, a projecting member 73 composed of an annular ring or a plurality of ball members is fitted on the outer peripheral surface of the distal end portion of the female cylinder 21 so as to protrude from the outer peripheral surface. Therefore, when the thick part of the connecting cylinder 71 engages with the protruding member 73, the movement of the connecting cylinder 71 to the front end side due to the biasing is limited, and this state is usually in this state. On the other hand, the coupling mechanism 70 has a ball member 75, and this ball member 75 is disposed in a hole 76 formed at the tip of the female cylinder 21. The ball member 75 is usually covered with the inner peripheral surface of the thick portion of the connecting cylinder 71 and is prevented from moving outward. Further, the diameter of the inner side of the hole 76 is smaller than the diameter of the ball member 75, and the ball member 75 is immovable while protruding from the inner peripheral surface 21 </ b> A of the female cylinder 21. In this embodiment, a plurality of ball members 75 and holes 76 are provided at appropriate intervals in the circumferential direction of the female cylinder 21.

  When the male joint 2 and the female joint 3 are connected using the connecting mechanism 70 as described above, first, the connecting cylinder 71 is moved (slid) to the proximal end side, and the ball member 75 is moved outward. It can be moved. Next, in this state, the distal end portion 11 </ b> A of the male cylindrical body 11 is fitted into the opening formed on the inner peripheral surface 21 </ b> A of the distal end portion of the female cylindrical body 21. At the time of this insertion, since the ball member 75 can move outward, the ball member 75 does not hinder the insertion. By this insertion, as shown in FIG. 2, the distal end surface of the reduced diameter portion 12 formed on the inner peripheral surface 11 a of the male cylindrical body 11 and the reduced diameter portion 22 formed on the inner peripheral surface 21 a of the female cylindrical body 21. When the front end surface comes into contact with the front end surface, the ball member 75 is fitted into a recess 77 formed in the front end portion 11A of the male cylindrical body 11. In this state, if the movement of the connecting cylinder 71 to the proximal end is stopped, the connecting cylinder 71 is moved to the distal end side by the urging member 72, covers the ball member 75, and the outside of the ball member 75. The movement to the direction is made impossible. In this way, the ball member 75 and the recess 77 are engaged with each other, the male joint 2 and the female joint 3 are fixed, and the connection is completed.

  By the way, in this embodiment, an annular groove is formed along the circumferential direction on the inner peripheral surface 21A of the distal end portion of the female cylindrical body 21, and a sealing material 4 made of an O-ring or the like is embedded in the annular groove. . Thereby, in the inserted state, the inner peripheral surface of the sealing material 4 and the outer peripheral surface of the distal end portion 11A of the male cylindrical body 11 abut, and the outer peripheral surface of the distal end portion 11A of the male cylindrical body 11 and the inner end portion of the female cylindrical body 21 are in contact. The fluid is prevented from leaking from between the peripheral surface 21A. On the other hand, in the state where the insertion is removed, as shown in FIG. 1, the inner peripheral surfaces of the reduced diameter portions 12 and 22 and the tapered surface of the head portion 31 come into contact with each other. It is blocked. In the present embodiment, an annular groove is formed in the tapered surface of the head portion 31 along the circumferential direction in order to make the flow paths L1 and L2 more completely closed, and the sealing material 5 is formed in the annular groove. Is embedded. The sealing material 5 can be formed by, for example, an O-ring or by baking a rubber material as disclosed in JP-A-2006-105285.

  On the other hand, in this embodiment, as shown in an enlarged view in FIG. 2, the rectifying ring 6 can be provided on the proximal end side of the head 31. The rectifying ring 6 has a bottom surface having a conical shape having substantially the same diameter as the bottom surface of the head portion 31, and a through hole is formed in the axial center portion. For example, when the rectifying ring 6 is disposed in the flow path L2, the bottom surface is oriented to face the bottom surface of the head portion 31, and the shaft portion 32 and the biasing member of the valve 30 pass through the through-hole formed in the shaft center portion. Let 8 pass. With the arrangement of the rectifying ring 6, turbulent flow or the like does not occur on the proximal end side of the head portion 31, so that pressure loss is reduced. In disposing the rectifying ring 6, for example, JP-A-8-320092 can be referred to.

(Valve support)
Next, the valve support A of the present embodiment will be described. In addition, the valve support A can be provided with the same form in both the flow path L1 and the flow path L2, and the case where it is provided in the flow path L1 will be described below as an example.

  As shown in FIGS. 3 and 4, the valve support A of the present embodiment is mainly configured by a shaft passing part A <b> 1, a bridge part A <b> 2, and a base part A <b> 3. The shaft-passing portion A1 has a shape along the circumferential surface of the shaft portion 32 constituting the valve 30 with respect to the cross-sectional direction of the flow path L1, for example, in the present embodiment in which the shaft portion 32 has a substantially circular cross section. It is arcuate. In this embodiment, two shaft-passing portions A1 are provided so as to face each other, and the shaft portion 32 is enclosed by these two. Thereby, the axial part 32 is supported so that a movement to an axial direction is possible. On the other hand, the bridge portion A2 extends from both end portions A1a of the pair of shaft passing portions A1 to the inner peripheral surface 11a of the cylindrical body 11, and is particularly linear in this embodiment. Further, the base portion A3 is connected to the respective leading end portions A2a of the adjacent bridging portions A2 extending from the other shaft passing portions A1, and the shape along the inner peripheral surface 11a, that is, the inner peripheral surface 11a is a cross section. In the present embodiment, which has a substantially perfect circle shape, the shape is an arc. In this way, the connecting portion A2 is connected to the shaft portion A1 and the base portion A3, whereby the force received by the shaft portion A1 from the shaft portion 32 is transmitted to the base portion A3 and further to the inner peripheral surface 11a. Therefore, the force from the shaft portion 32 is more directly transmitted to the inner peripheral surface 11a (if the force is not transmitted directly, the inner peripheral surface 11a has no movement even if the moving direction of the shaft portion 32 is inclined with respect to the axial direction). There is a possibility that the movement in the tilted state will not be resolved without being transmitted.) It is preferable that the transfer portion A2 extends in the radial direction of the flow path L1, and particularly extends linearly. When the transfer portion A2 is linear, there is an effect that the material cost is reduced and an effect that the pressure loss is further reduced. Further, from the viewpoint of the stability of the valve support A, it is preferable that the length of the base A3 is long. The length of the base portion A3 is proportional to the central angle Z of the transfer portion A2 connected to the one base portion A3. Therefore, when the central angle Z is increased, the valve support A is stabilized, but on the other hand, the material cost and the pressure loss are also increased. Therefore, from the viewpoint of these balances, for example, the central angle Z is preferably set to 15 to 180 °, and more preferably set to 60 ° as in the illustrated example.

  On the other hand, in the valve support A of the present embodiment, the shaft passing part A1, the spanning part A2, and the base part A3 are all formed in a cross-sectional shape (valve shape) in which the cross-sectional direction of the flow path L1 is thin. Thereby, as apparent from FIG. 3, the pressure loss of the fluid passing through the flow path L1 is significantly reduced. Moreover, the valve support A can be manufactured only by the manufacturing method described later, and the manufacturing cost is reduced. Further, the valve support A can be supported only by lengthening the length V of the valve support A (meaning the length based on the axial direction of the shaft portion 32, that is, the length based on the flow direction of the flow path L1). The strength of the tool A (this strength includes, for example, the integrated strength of the shaft passing portion A1, the spanning portion A2, and the base portion A3) and stability (for example, stability to the inner peripheral surface 11a, shaft The point which can support the part 32 stably etc.) can be improved suitably. Of course, the length V of the valve support A is also influenced by the position of the retaining ring 9. In the aforementioned valve-equipped pipe joint 1, the retaining ring 9 is located on the distal end side relative to the conventional valve-equipped pipe joint 100, and when it is located on the proximal end side, the valve support A Increasing the length V is sufficient.

  When a comparative test between the valve support A of the present embodiment and the conventional valve support 40 was performed, it was found that the pressure loss can be reduced by about 44% according to the valve support A of the present embodiment.

[Manufacturing method of valve support]
Next, the manufacturing method of the valve support A of this Embodiment is demonstrated.
In the manufacturing method of this embodiment, the cylindrical metal material plastically deformed to give the valve support A having a shaft passage section A1, rack delivery regions A2 and base A3 described above. According to the method of this embodiment, the valve support A can be obtained only by plastic deformation of the cylindrical metal material, and the manufacturing cost can be reduced because the manufacturing is easy. Moreover, as described above, the obtained valve support A has reduced pressure loss and sufficient strength.
In the present invention, “plasticity” refers to a phenomenon in which, when an external force is applied to an object (metal material) to give a deformation that exceeds the elastic limit, the deformation remains almost intact even if the external force is removed, “Plastic deformation processing” refers to processing for deforming the shape of an object using such properties of the object.

In this embodiment, the specific method of plastic deformation is not particularly limited, but the following method is recommended.
[Specific method 1]
As shown in FIG. 5, the plastic deformation process according to this method includes a step of sandwiching a cylindrical metal material P such as a metal pipe between a pair of molds B and B from both sides. As shown in the upper part of FIG. 5, the mold B used here has an edge B <b> 1 formed on the surface on the metal material P side and drawn along an arcuate portion A <b> 1, and a straight line connected to the edge B <b> 1. A recess formed by a combination of the edge B2 having a shape along the span A2 and the edge B3 having a shape connected to the base A3 by drawing a curve connected to the edge B2. Therefore, when sandwiched between the molds B and B, the metal material P is deformed into the same shape as the valve shape (cross-sectional shape) of the valve support A as shown in the lower part of FIG. If the deformed metal material P is repeatedly cut at intervals in the axial direction of the metal material P, for example, based on the length V (see FIG. 4) of the valve support A, a plurality of metal materials P are formed from one metal material P. The valve support A is manufactured. As described above, according to the method of the present embodiment, a plurality of valve supports A can be obtained only by sandwiching and cutting the metal material P, which is extremely easy to manufacture.
In this method, as the metal material P, those having various cross-sectional shapes such as a cylindrical shape and a rectangular tube shape can be used. From the viewpoint of ease of processing, a cylindrical metal material is used. Is preferred.

[Specific method 2]
As shown in FIG. 6, the plastic deformation process according to the present method is a process of passing (for example, pulling) a cylindrical metal material P such as a metal pipe through holes (C1 to C3) formed in the mold C. Have The holes (C1 to C3) of the mold C used here are an edge C1 that draws a circular arc and has a shape along the axis A1, and a straight line that connects to the edge C1 and has a shape along the transfer part A2. C2 and the edge C3 that draws a curve connected to the edge C2 and has a shape along the base A3 are combined in a line-symmetric manner with the virtual line S as the center. Therefore, when the holes (C1 to C3) are passed, the metal material P is deformed into the same shape as the valve shape (cross-sectional shape) of the valve support A. If the deformed metal material P is also repeatedly cut at intervals in the axial direction of the metal material P, for example, based on the length V (see FIG. 4) of the valve support A, a plurality of metal materials P can be obtained. The valve support A is manufactured. As described above, according to the method of the present embodiment, the plurality of valve supports A can be obtained only by passing and cutting the holes of the metal material P, which is extremely easy to manufacture.
Also in this method, as the metal material P, those having various cross-sectional shapes such as a cylindrical shape and a rectangular tube shape can be used, but from the viewpoint of ease of processing, a cylindrical metal material is used. It is preferable to do this.

[ Reference method 1 ]
As shown in FIG. 7, the plastic deformation process according to the present method includes a step of bending a plate-shaped metal material S such as a sheet metal (metal plate). For example, the bending may be performed by drawing a circular arc to form a piece D1 having a shape along the shaft passing portion A1, bending by bending the end D1a of the piece D1, or a straight shape of the piece D2 having a shape along the transfer portion A2. This includes bending for bending the end D2a, bending for drawing a curve and forming a piece D3 having a shape along the base A3. By such a combination of bending, the metal material S is deformed into the same shape as the valve shape (cross-sectional shape) of the valve support A. For example, the deformed metal material S can be cut from a single metal material S to a plurality of metal materials S if it is repeatedly cut at intervals (in the depth direction of the paper) based on the length V (see FIG. 4) of the valve support A. A valve support A is manufactured. As described above, according to the method of the present embodiment, the plurality of valve supports A can be obtained only by bending and cutting the metal material S, which is extremely easy to manufacture. In addition, various valve supports A having different sizes can be obtained only by changing the bending position and the bending amount, and the size can be changed very easily.
In this method, as the metal material S, for example, even if it is bent or bent in the middle, it can be used as long as it is plate-like. It is preferable to use a metal material that is shaped like a flat plate.

[ Method 2 for reference ]
The plastic deformation processing according to the present method is performed by using a plate-like metal material S such as a sheet metal as shown in (1) of FIG. 8 and a front view of (2) of FIG. It has the process of pinching with dice | dies (E1). By this sandwiching, a convex part S1 having the same planar shape as the valve shape (cross-sectional shape) of the valve support A is formed on the metal material S, and the projecting from the surface of the metal material S more than the convex part S1 by repeating the sandwiching. The raised convex portion S2 is formed. Then, the sandwiching is advanced, or the bottom of the convex portion S2 is sliced (cut) in the lateral direction, and the convex portion S2 is separated from the metal material S. At this time, a hole S3 having the same shape as the convex portion S2 is formed in the metal material S. Furthermore, the convex part S2 cut off from the metal material S cuts out a piece S4 having a similar shape smaller than the convex part S2. Thereby, the valve support A is formed from the separated convex portion S2. Thus, according to the method of the present embodiment, the valve support A can be obtained only by sandwiching the metal material S and cutting out the piece S4, which is extremely easy to manufacture.

[Others]
As described above, the materials of the metal materials P and S of the present embodiment are not particularly limited, and for example, SUS303 and 304 can be used.

  The present invention is applicable, for example, as a method of manufacturing a valve support used for a valve-equipped pipe joint called a coupler.

It is a half sectional view showing the state before connection of the pipe joint with valve concerning an embodiment. It is a half sectional view showing the state after connection of the pipe joint with valve concerning an embodiment. It is a top view which shows the valve support tool which concerns on embodiment. It is a front view which shows the valve support tool which concerns on embodiment. It is a figure for demonstrating the specific method 1 of a plastic deformation process. It is a figure for demonstrating the specific method 2 of a plastic deformation process. It is a figure for demonstrating the method 1 used as the reference of a plastic deformation process. It is a figure for demonstrating the method 2 used as the reference of a plastic deformation process. It is a half sectional view showing the state before connection of the pipe joint with valve concerning the conventional form. It is a half sectional view showing the state after connection of the pipe joint with valve concerning the conventional form. It is a top view which shows the valve support tool which concerns on the conventional form. It is a half sectional view showing a valve support according to a conventional form. It is a top view which shows the valve support tool which concerns on another conventional form. It is a half sectional view showing a conventional valve support according to another form.

  DESCRIPTION OF SYMBOLS 1,100 ... Pipe joint with a valve, 2,110 ... Male joint, 3,120 ... Female joint, 4,5 ... Sealing material, 6 ... Rectification ring, 8 ... Biasing member, 9 ... Stop ring, 11 ... Male cylindrical body, 12, 22 ... Reduced diameter part, 21 ... Female cylindrical body, 30 ... Valve, 31 ... Head, 32 ... Shaft part, 40, 50 ... Valve support, 41 ... First cylindrical part, 42 ... Cross-linking part, 43 ... second cylindrical part, 51 ... cylindrical part, 52 ... projecting part, 70 ... connecting mechanism, 71 ... connecting cylindrical body, 72 ... biasing member, 73 ... projecting member, 75 ... ball member, 76 ... A hole, 77 ... a recessed part, A ... a valve support, A1 ... a shaft passing part, A2 ... an intermediate part, A3 ... a base part, B, C ... a metal mold, P, S ... a metal material, L1, L2 ... a flow path.

Claims (2)

A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
In each of the two flow paths, a head and a valve having a shaft portion having a smaller diameter than the head extending from the head to the opposite side of the other cylinder, and the other cylinder of the head An urging member that is arranged on the opposite side and urges the head toward the other cylindrical body,
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, and by this pressing, the both heads are separated from the reduced diameter portion and the both flow paths communicate with each other. Yes,
A method of manufacturing the valve support that is fixed to the cylindrical body with the urging member interposed between the head and the shaft portion so as to be movable in the axial direction,
One cylindrical metal pipe is plastically deformed, and the deformed metal pipe is repeatedly cut at intervals in the axial direction of the metal pipe with reference to the length of the valve support. From the pipe,
A shaft passing part that surrounds the shaft part so as to be movable in the axial direction along the peripheral surface of the shaft part, and a bridge that extends from both ends of the pair of shaft passing parts to the inner peripheral surface. A connecting portion and a base portion that is connected to the respective distal end portions of the adjacent adjacent extending portions that extend from different shaft passing portions and that extends along the inner peripheral surface; and
A plurality of valve supports, each of which has a valve shape in which the cross-sectional direction of the flow path is thin, are the shaft passing part, the bridge part, and the base part,
The plastic deformation process is
The metal pipe, from both sides, on the surface on the metal pipe side, an edge formed along the shaft passing part, an edge formed along the bridge part connected to the edge, and the edge Having a step of deforming by sandwiching between a pair of molds in which a concave portion formed of a combination of edges formed along the base to be connected is formed,
The manufacturing method of the valve support characterized by the above-mentioned . A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
In each of the two flow paths, a head and a valve having a shaft portion having a smaller diameter than the head extending from the head to the opposite side of the other cylinder, and the other cylinder of the head An urging member that is arranged on the opposite side and urges the head toward the other cylindrical body,
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, and by this pressing, the both heads are separated from the reduced diameter portion and the both flow paths communicate with each other. Yes,
A method of manufacturing the valve support that is fixed to the cylindrical body with the urging member interposed between the head and the shaft portion so as to be movable in the axial direction,
One cylindrical metal pipe is plastically deformed, and the deformed metal pipe is repeatedly cut at intervals in the axial direction of the metal pipe with reference to the length of the valve support. From the pipe,
A shaft passing part that surrounds the shaft part so as to be movable in the axial direction along the peripheral surface of the shaft part, and a bridge that extends from both ends of the pair of shaft passing parts to the inner peripheral surface. A connecting portion and a base portion that is connected to the respective distal end portions of the adjacent adjacent extending portions that extend from different shaft passing portions and that extends along the inner peripheral surface; and
A plurality of valve supports, each of which has a valve shape in which the cross-sectional direction of the flow path is thin, are the shaft passing part, the bridge part, and the base part,
The plastic deformation process is
The metal pipe is formed on a metal mold, along an edge formed along the shaft passing part, along an edge formed along the crossing part connected to the edge, and along the base connected to the edge. Having a step of deforming the shaped edges by passing them through a hole having a shape that is axisymmetrically combined;
The manufacturing method of the valve support characterized by the above-mentioned .

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