CN112705577B - One-time forming method for valve body and valve pipe of ball valve - Google Patents
One-time forming method for valve body and valve pipe of ball valve Download PDFInfo
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- CN112705577B CN112705577B CN202110102472.8A CN202110102472A CN112705577B CN 112705577 B CN112705577 B CN 112705577B CN 202110102472 A CN202110102472 A CN 202110102472A CN 112705577 B CN112705577 B CN 112705577B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/03—Making uncoated products by both direct and backward extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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Abstract
A one-time forming method for a valve body and a valve pipe of a ball valve is characterized by comprising the following steps: firstly, calculating the outer diameter and the length of a raw material pipe according to the principle that the volume of a material is unchanged; secondly, processing a mounting hole for mounting a valve rod sleeve at the center of the raw material pipe; thirdly, loading the machined spheres matched with the drift diameter into a raw material pipe; fourthly, the two ends of the ball body are additionally provided with support rings for positioning the ball body, a sealing seat is additionally arranged between the support rings and the ball body, and a sealing ring is arranged in the sealing seat; obtaining a mould pressing raw material; fifthly, sleeving two ends of the mould pressing raw material on a forming die respectively, and installing the forming die on a press machine for pressurization; and finally, moving the forming die in the opposite direction, taking down the valve body formed by pressing, and transitionally connecting the valve body and the valve pipe through the frustum body. The method is simple, high in processing efficiency and good in quality, and can reduce the processing cost.
Description
Technical Field
The invention relates to a valve technology, in particular to a ball valve processing technology, and specifically relates to a one-time forming method for a valve body and a valve pipe of a ball valve.
Background
The valve body and the valve pipe of the traditional small-diameter ball valve (50 mm or below) are formed by welding, the method not only needs to prepare raw materials with two different pipe diameters, increases purchasing difficulty and material preparation space, but also needs to perform groove machining before welding, increases machining cost, is easy to generate welding defects during welding, needs to perform welding flaw detection, increases machining procedures, and greatly increases the machining cost of the valve. Meanwhile, the welded seam formed by welding has poor aesthetic property and can become a part which is corroded or damaged firstly in the using process. Today, the quality and price development of the valve body are critical to the survival of the enterprise, so that the existing valve body processing technology must be improved.
Disclosure of Invention
The invention aims to provide a one-step forming method for a valve body and a valve pipe of a ball valve, which can form the valve body and the valve pipe at one step by cold extrusion and save the step of welding and connecting the valve body and the valve pipe.
The technical scheme of the invention is as follows:
a one-time forming method for a valve body and a valve pipe of a ball valve is characterized by comprising the following steps:
firstly, according to the principle that the volume of a material is unchanged, calculating the outer diameter and the length of a raw material pipe according to the drift diameter of a finally formed valve and the length of the valve pipe;
secondly, processing a mounting hole for mounting the valve rod sleeve 5 at the central position of the raw material pipe;
thirdly, the processed ball 3 matched with the drift diameter is put into a raw material pipe;
fourthly, the two ends of the sphere 3 are additionally provided with support rings 4 for positioning the sphere 3, meanwhile, a sealing seat 2 is additionally arranged between the support rings 4 and the sphere 3, and a sealing ring is arranged in the sealing seat 2; obtaining a mould pressing raw material;
fifthly, respectively sleeving two ends of the mould pressing raw material on a forming die 9, enabling the two forming dies 9 to be bilaterally symmetrical, and installing the forming dies 9 on a press machine to enable the two forming dies 9 to move oppositely until the end faces of the two forming dies are contacted;
finally, the forming die 9 is moved in the opposite direction, the valve body 1 formed by pressing is removed, and the valve body 1 and the valve pipe 14 are transitionally connected through the frustum body 15. Install valve sleeve 5 and valve rod 8 additional on the valve body, install O type circle 6 and antifriction pad side 7 additional simultaneously on valve rod 8 and can obtain the finished product ball valve.
The supporting ring 4 consists of a supporting cylinder 10 with the outer diameter matched with the drift diameter of the valve and a supporting lug 11 with the outer diameter matched with the inner diameter of the valve body 1, the supporting lug 11 forms a corner 12 for installing the sealing seat 2, and a supporting end 13 of the supporting lug 11 is propped against the inner wall of the large end of the frustum body 15.
The sealing ring is an O-shaped sealing ring.
The inner cavity of the forming die 9 is matched with the half valve body and one side valve pipe of the finished valve, and the matched concave-convex structure 16 is arranged on the combined surface of the two phases.
The cone angle of the frustum body 15 is 10-45 degrees.
The cone angle of the frustum body 15 is 27.5 degrees.
The invention has the beneficial effects that:
the invention realizes the one-time molding of the valve body and the valve pipe, saves the traditional welding process and greatly reduces the processing cost.
Because the valve body and the valve body are of an integrated structure, the pressure resistance strength and the consistency of the valve can be integrally improved.
The invention can prolong the service life of the valve.
Drawings
Fig. 1 is a schematic structural diagram of the finished ball valve of the present invention.
Fig. 2 is a schematic structural view of the forming die in a use state of the invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1-2.
A one-time forming method for a valve body and a valve pipe of a ball valve comprises the following steps:
firstly, according to the principle that the volume of a material is not changed, calculating the outer diameter and the length of a raw material pipe according to the drift diameter of a finally formed valve (namely the inner diameter of the valve pipe is generally below 50 mm, when the inner diameter exceeds 50 mm, the requirements on a press machine and a forming die are higher, and if the conditions allow, one-time compression molding can be adopted);
secondly, a mounting hole for mounting the valve rod sleeve 5 is processed at the center of the raw material pipe, and the mounting hole can be processed and formed after forming in specific implementation;
thirdly, the processed ball 3 matched with the drift diameter is put into a raw material pipe;
fourthly, additionally arranging support rings 4 for positioning the ball body 3 at two ends of the ball body 3, additionally arranging a sealing seat 2 between the support rings 4 and the ball body 3, and arranging sealing rings (O-shaped sealing rings) in the sealing seat 2; obtaining a mould pressing raw material; the support ring 4 consists of a support cylinder 10 with the outer diameter matched with the drift diameter of the valve and a support lug 11 with the outer diameter matched with the inner diameter of the valve body 1, the support lug 11 forms a corner 12 for installing the sealing seat 2, and a support end 13 of the support lug 11 is propped against the inner wall of the large end of a frustum body 15, as shown in figure 1.
Fifthly, two ends of the molding material are respectively sleeved on one forming die 9, the two forming dies 9 are symmetrical left and right, and the forming dies 9 are arranged on a press machine, so that the two forming dies 9 move oppositely until the end faces of the two forming dies are contacted; as shown in fig. 2, the inner cavity of the forming mold 9 is matched with the half valve body and one side valve tube of the finished valve, the matching concave-convex structure 16 is arranged on the combining surface of the two phases, and when the concave-convex structure 16 is closed, the end of the mold pressing is indicated.
And finally, moving the forming die 9 in the opposite direction, taking down the valve body 1 formed by pressing, wherein the valve body 1 and the valve pipe 14 are transitionally connected through a frustum body 15, and the cone angle of the frustum body 15 is 10-45 degrees, and is optimally 27.5 degrees. And a valve sleeve 5 and a valve rod 8 are additionally arranged on the valve body, and an O-shaped ring 6 and an anti-wear pad 7 are additionally arranged on the valve rod 8, so that the finished ball valve shown in the figure 1 can be obtained.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (3)
1. A one-time forming method for a valve body and a valve pipe of a ball valve is characterized by comprising the following steps:
firstly, calculating the outer diameter and the length of a raw material pipe according to the principle that the volume of a material is unchanged and the drift diameter of a finally formed valve and the length of the valve pipe;
secondly, processing a mounting hole for mounting a valve rod sleeve (5) at the central position of the raw material pipe;
thirdly, the processed ball body (3) matched with the drift diameter of the valve is put into a raw material pipe;
fourthly, the two ends of the sphere (3) are additionally provided with support rings (4) used for positioning the sphere (3), meanwhile, a sealing seat (2) is additionally arranged between the support rings (4) and the sphere (3), and a sealing ring is arranged in the sealing seat (2); obtaining a mould pressing raw material;
fifthly, two ends of the mould pressing raw material are respectively sleeved on one forming die (9), the two forming dies (9) are bilaterally symmetrical, and the forming dies (9) are arranged on a press machine to enable the two forming dies (9) to move in opposite directions until the end faces of the two forming dies are contacted;
sixthly, moving the forming die (9) towards the opposite direction, taking down the valve body (1) formed by pressing, and transitionally connecting the valve body (1) and the valve pipe (14) through a frustum body;
the support ring (4) consists of a support cylinder (10) with the outer diameter matched with the drift diameter of the valve and a support lug (11) with the outer diameter matched with the inner diameter of the valve body (1), the support lug (11) forms a corner (12) for mounting the sealing seat (2), and a support end (13) of the support lug (11) is abutted against the inner wall of the large end of the frustum body;
the inner cavity of the forming die (9) is matched with the half valve body and one side valve pipe of the finished valve, and the matched concave-convex structures (16) are arranged on the joint surfaces of the two phases; the cone angle of the frustum body is 10-45 degrees.
2. The method of claim 1, wherein said seal is an O-ring seal.
3. The method of claim 1, wherein the cone angle of the frustum body is 27.5 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110102472.8A CN112705577B (en) | 2021-01-26 | 2021-01-26 | One-time forming method for valve body and valve pipe of ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110102472.8A CN112705577B (en) | 2021-01-26 | 2021-01-26 | One-time forming method for valve body and valve pipe of ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112705577A CN112705577A (en) | 2021-04-27 |
| CN112705577B true CN112705577B (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110102472.8A Active CN112705577B (en) | 2021-01-26 | 2021-01-26 | One-time forming method for valve body and valve pipe of ball valve |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280169A (en) * | 2021-07-06 | 2021-08-20 | 北京北高阀门有限公司 | Ball valve preparation method suitable for heat supply system and pipe pressure integrated seamless ball valve |
| CN113294577A (en) * | 2021-07-13 | 2021-08-24 | 北京北高阀门有限公司 | Two-way ball valve of cold-drawn integral valve body and preparation method thereof |
| CN113280170A (en) * | 2021-07-13 | 2021-08-20 | 北京北高阀门有限公司 | Built-in three-way integral ball valve and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2838716B2 (en) * | 1989-04-28 | 1998-12-16 | 株式会社キッツ | Ball valve |
| JPH10122390A (en) * | 1996-10-23 | 1998-05-15 | Toyo Valve Kk | Ball valve and its manufacture |
| KR100274507B1 (en) * | 1998-03-27 | 2001-01-15 | 박종성 | Method for manufacturing ball valve by using metal pipe |
| WO2001057423A1 (en) * | 2000-02-03 | 2001-08-09 | Kitz Corporation | Ball valve and production method therefor |
| RU61831U1 (en) * | 2006-11-07 | 2007-03-10 | Дмитрий Олегович Левин | BALL VALVE |
| TW201412427A (en) * | 2012-09-17 | 2014-04-01 | zhi-yong Liu | Processing device and processing method for ball valve body |
| CN105508647A (en) * | 2016-02-01 | 2016-04-20 | 无锡智能自控工程股份有限公司 | Elastic-seal valve seat structure of fixed ball valve |
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- 2021-01-26 CN CN202110102472.8A patent/CN112705577B/en active Active
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