CN105156783A - Pipe joint part and machining methods thereof - Google Patents
Pipe joint part and machining methods thereof Download PDFInfo
- Publication number
- CN105156783A CN105156783A CN201510533288.3A CN201510533288A CN105156783A CN 105156783 A CN105156783 A CN 105156783A CN 201510533288 A CN201510533288 A CN 201510533288A CN 105156783 A CN105156783 A CN 105156783A
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- Prior art keywords
- tubular union
- tubing
- pipe
- wall
- pipe connector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a pipe joint part and machining methods thereof. The pipe joint part is a thin-wall pipe joint and comprises a pipe and a pipe connector. The ends of the pipe connector are provided with knurled internal threads and transition cones connected with knurled internal thread sections. Flanges protruding in the radial direction are arranged on the walls of the transition cones of the pipe connector and sealing rings are arranged in the flanges. The pipe is provided with a knurled internal thread matched with a knurled external thread at an end opening of the pipe. The end of the pipe is provided with an inner cone joint. The pipe joint part and the machining methods of the pipe joint part are characterized in that the taper of an inner cone is smaller than that of the transition cones and the machining methods comprise the machining method of the pipe and the machining method of the pipe connector. By the adoption of the machining methods, cold machining without cutting chips can be achieved and materials are saved.
Description
Technical field
The invention belongs to pipe fitting manufacture field, relate to a kind of pipe connector and processing method thereof particularly.
Background technique
Along with the raising of people's living standard, to the corresponding raising of the peaceful hygienic requirements of potable water.Require to reach safety and sanitary, water pollution once again, non-corrosive, free from extraneous odour, long service life etc. can not be produced to water transferring line.The comprehensive excellent properties of Stainless Steel Tube is classic.
But the traditional silk tooth connecting means of Stainless Steel Tube, must have cutting surplus by tube wall thickness, make the cost of tubing high, is difficult to enter feedwater field, residential houses.The application of thin-wall stainless steel water pipe, makes the wall thickness of tubing and tubing decrease 2/3, can reduce costs, and makes stainless steel waterpipe popularize residential houses feedwater tubing.The use amount of thin-wall stainless steel water pipe increases increasingly.When using thin-wall stainless steel water pipe, the connection between tubing and tubing generally adopts card press or be welded to connect, and owing to being thin walled tube, connecting, must be realized by rolled thread mode according to spiral shell mosquito.In addition, be 200620147792.6 disclose a kind of thin-wall stainless steel rotary plug-in type fitting in China Patent No., comprise socket and spigot, the end of socket has the internal thread interface that spin corresponding to outside thread on spigot, the end of spigot is formed with the female cone interface with the corresponding interference fit of transition circular cone in socket, in the transition conical walls of socket, radial protuberance has annular flange flange, flange is in-built is embedded with rubber o-ring, spigot revolves and inserts in socket, and female cone interface and transition circular cone, seal ring form press seal.This structure, the female cone of the end of spigot becomes interference fit with transitional cone, because spigot is screwed in socket, therefore, difficulty is installed, trouble, can make pipe connector produce torsional deformation, and, female cone is made to become press seal with transitional cone, the required precision of then processing is high, and like this, cost is just high.
Therefore need to provide a kind of pipe connector to realize the cold working of chipless, save material.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide a kind of mould washing unit, improve the Production Life of mould, reduce and damage, and rust preventing agent mould after cleaning sprayed in the second placed cavity, spraying tube spraying effect is good, decreases waste, practicability is good, is conducive to the maintenance of mould.
A kind of pipe connector, described pipe connector is thin wall pipe connector, and described pipe connector comprises tubing and tubular union; Described tubular union end is provided with the internal thread of roll extrusion and the transition circular cone of connecting rolling internal thread segment, the transition conical walls of described tubular union has radial outstanding flange, is provided with seal ring in flange; Described tubing is provided with the roll extrusion internal thread matched with pipe end roll extrusion outside thread, and the end of tubing is provided with female cone interface; The tapering of described female cone is less than the tapering of transition circular cone.
A processing method for pipe connector, this processing method comprises the processing method of tubing and the processing method of tubular union; The processing method of described tubular union is as follows:
(1) enlarging: the end of tubular union is withstood on the enlarging punch with cylinder and tapering, the position of adjutage link and enlarging punch, make tubular union coaxial with enlarging punch, then matched moulds, enlarging punch enters in tubular union and makes tubular union produce plastic deformation, then die sinking, takes out the tubular union be shaped from mould;
(2) swollen flange: the annular flange flange on processing tube link transition circular cone;
(3) screw thread on processing tube link end, the step of processing is: have the rolling wheel of dextrorotation spiral shell mosquito to be located at the end of tubular union on two surfaces, one of them is located on the inwall of tubular union, and another is located on the outer wall of tubular union; When machining screw, the rolling wheel surface being rotated through two opposite direction rotatings of described tubular union realizes with the force of rolling friction of tube wall, the inwall of tubular union end is subject to the squeezing action of the rolling wheel be located on inwall, produce outward radial plastic deformation, the outer wall of tubular union is subject to being located at the squeezing action of rolling wheel on outer wall, produces radially plastic deformation;
Described pipes processing method is as follows:
(1) reducing: pipe end put into necking die location, fix, make reducing die coaxial with tubing; Matched moulds, makes pipe end under the effect of reducing die, produce plastic deformation, die sinking, is taken out by tubing from necking die;
(2) process the screw thread on pipe end, the step of processing is: have the rolling wheel of dextrorotation spiral shell mosquito to be located at the restriction position of pipe end on two surfaces, one of them is located on the inwall of tubing, and another is located on the outer wall of tubing; When machining screw, two the rolling wheel surfaces rotated that are rotated through of described tubing realize with the force of rolling friction of tube wall, the inwall of pipe end is subject to the squeezing action of the rolling wheel be located on inwall, produce outward radial plastic deformation, the outer wall of tubing is subject to being located at the squeezing action of rolling wheel on outer wall, produces radially plastic deformation.
Technological scheme of the present invention has following beneficial effect:
A kind of pipe connector provided by the invention and processing method thereof, adopt the pipe connector of this structure, when tubing revolve be inserted into tubular union time, tapering due to female cone is less than the tapering of transition circular cone, transition circular cone can not produce interference fit, therefore, pipe connector can not be caused to produce torsional deformation, and it is also easy to install; Owing to being provided with seal ring in the projection on transition circular cone, therefore, good seal action can be played.Adopt this processing method, the rolling finishing due to enlarging, reducing, bulging, screw thread is all make material generation plastic deformation, chipless, therefore, has saved material; When processing tube link, due to the local plastic deformation of material can be produced during bulging, under the effect of stress, other region in local deformation district can be caused to produce small distortion, before bulging being arranged in roll extrusion internal thread, the region producing micro-strain can be corrected, high to ensure the internal thread precision processed; When processing tubing, owing to can produce the local plastic deformation of material when reducing, under the effect of stress, other region in local deformation district can be caused to produce small distortion, before reducing being arranged in roll extrusion outside thread, the region producing micro-strain can be corrected, high to ensure the outside thread precision processed.
Accompanying drawing explanation
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
Fig. 1 is the structural representation of the tubing of a kind of pipe connector of the present invention and processing method thereof;
Fig. 2 is the structural representation of the tubular union of a kind of pipe connector of the present invention and processing method thereof;
Fig. 3 is the structural representation of pipe connector of the present invention.
Embodiment
In order to have a clear understanding of technological scheme of the present invention, its detailed structure will be proposed in the following description.Obviously, the concrete execution of the embodiment of the present invention also not enough specific details being limited to those skilled in the art and haveing the knack of.The preferred embodiments of the present invention are described in detail as follows, and except these embodiments described in detail, can also have other mode of executions.
Below in conjunction with drawings and Examples, the present invention is described in further details.
Pipe connector is as shown in Figure 1 to Figure 3 thin wall pipe connector, comprises tubing 1 and tubular union 2; Tubing 1 as shown in Figure 1, form female cone 11 interface in the end of tubing 1, on the end of tubing 1, roll extrusion has outside thread 12; Its processing method is: 1) reducing: tubing 1 put into necking die location, fix, make reducing die coaxial with tubing 1; Then matched moulds, makes pipe end 11 produce plastic deformation under the effect of reducing die, then die sinking, is taken out by tubing 1 from necking die; 2) process the screw thread on tubing 1, the step of processing is: the end two rollers being located at tubing 1, and one of them is arranged on the inwall of tubing 1, and another is arranged on the outer wall of tubing; When machining screw, the frictional force being rotated through two roller surface rotated and tube wall of tubing 1 realizes, the inwall of pipe end is subject to the squeezing action of the roller be located on inwall, produce outward radial plastic deformation, the outer wall of tubing is subject to the squeezing action being located at outer wall upper roller, produces radially plastic deformation.
When processing tubing 1, owing to can produce the local plastic deformation of material when reducing, under the effect of stress, other region in local deformation district can be caused to produce small distortion, before reducing being arranged in roll extrusion outside thread, the region producing micro-strain can be corrected, high to ensure the outside thread precision processed.
Tubular union 2 as shown in Figure 2, on the end of tubular union 2, roll extrusion has the internal thread 23 be meshed with outside thread 12, is transition circular cone 21 between internal thread 23 and straight wall section 24, and transition circular cone 21 has a radial outstanding flange 22, as shown in Figure 3, in flange 22, seal ring 3 is installed; Its processing method is: 1) enlarging: withstood on the end of tubular union 2 on the enlarging punch with tapering, the position of adjutage link 2 and enlarging punch, make tubular union 2 coaxial with enlarging punch, then matched moulds, enlarging punch enters in tubular union and makes tubular union 2 produce plastic deformation, then die sinking, takes out the tubular union 2 be shaped from mould; 2) bulging: the annular protrusion 22 on processing tube link 2 transition circular cone 21; In the present embodiment, bulging adopts soft bulging, in order to the medium in soft bulging can be made to be reused, economizes on resources, and what adopt liquid, gas or elastomeric pressure replacement rigidity punch is used as transmission medium.3) screw thread on processing tube link 2 end, the step of processing is: the end two rollers being located at tubular union 2, and one of them is located on the inwall of tubular union 2, and another is located on the outer wall of tubular union 2; When machining screw, the frictional force being rotated through two roller surface rotated and tube wall of tubular union 2 realizes, the inwall of tubular union 2 end is subject to the squeezing action of the roller be located on inwall, produce outward radial plastic deformation, the outer wall of tubular union is subject to the squeezing action being located at outer wall upper roller, produces radially plastic deformation.
When processing tube link 2, due to the local plastic deformation of material can be produced during bulging, under the effect of stress, other region in local deformation district can be caused to produce small distortion, before bulging being arranged in roll extrusion internal thread, the region producing micro-strain can be corrected, high to ensure the internal thread precision processed.
As shown in Figure 3, during mounting pipe fitting, first seal ring 3 is put in flange 22, then tubing 1 is revolved in Inserting Tube link 2, in installation process, owing to tubing 1 there being female cone 11 interface, tubular union 2 has a transition circular cone 21, the tapering of female cone 11 is less than the tapering of transition circular cone 21, like this, the outer surface of female cone 11 does not produce with the internal surface of transition circular cone 21 and contacts, therefore, easy installation, and tubing 1 and tubular union 2 can not produce torsional deformation; Meanwhile, along with the continuous insertion of tubing 1, the outer wall of female cone 11 contacts wall pressure tightly with seal ring 3, can play good sealing effect like this.
Finally should be noted that: above embodiment is only in order to illustrate that technological scheme of the present invention is not intended to limit; although with reference to above-described embodiment to invention has been detailed description; those of ordinary skill in the field still can modify to the specific embodiment of the present invention or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims awaited the reply.
Claims (2)
1. a pipe connector, described pipe connector is thin wall pipe connector, and described pipe connector comprises tubing and tubular union; Described tubular union end is provided with the internal thread of roll extrusion and the transition circular cone of connecting rolling internal thread segment, the transition conical walls of described tubular union has radial outstanding flange, is provided with seal ring in flange; Described tubing is provided with the roll extrusion internal thread matched with pipe end roll extrusion outside thread, and the end of tubing is provided with female cone interface; It is characterized in that, the tapering of described female cone is less than the tapering of transition circular cone.
2. a processing method for pipe connector, described pipe connector is pipe connector according to claim 1, it is characterized in that: this processing method comprises the processing method of tubing and the processing method of tubular union; The processing method of described tubular union is as follows:
(1) enlarging: the end of tubular union is withstood on the enlarging punch with cylinder and tapering, the position of adjutage link and enlarging punch, make tubular union coaxial with enlarging punch, then matched moulds, enlarging punch enters in tubular union and makes tubular union produce plastic deformation, then die sinking, takes out the tubular union be shaped from mould;
(2) swollen flange: the annular flange flange on processing tube link transition circular cone;
(3) screw thread on processing tube link end, the step of processing is: have the rolling wheel of dextrorotation spiral shell mosquito to be located at the end of tubular union on two surfaces, one of them is located on the inwall of tubular union, and another is located on the outer wall of tubular union; When machining screw, the rolling wheel surface being rotated through two opposite direction rotatings of described tubular union realizes with the force of rolling friction of tube wall, the inwall of tubular union end is subject to the squeezing action of the rolling wheel be located on inwall, produce outward radial plastic deformation, the outer wall of tubular union is subject to being located at the squeezing action of rolling wheel on outer wall, produces radially plastic deformation;
Described pipes processing method is as follows:
(1) reducing: pipe end put into necking die location, fix, make reducing die coaxial with tubing; Matched moulds, makes pipe end under the effect of reducing die, produce plastic deformation, die sinking, is taken out by tubing from necking die;
(2) process the screw thread on pipe end, the step of processing is: have the rolling wheel of dextrorotation spiral shell mosquito to be located at the restriction position of pipe end on two surfaces, one of them is located on the inwall of tubing, and another is located on the outer wall of tubing; When machining screw, two the rolling wheel surfaces rotated that are rotated through of described tubing realize with the force of rolling friction of tube wall, the inwall of pipe end is subject to the squeezing action of the rolling wheel be located on inwall, produce outward radial plastic deformation, the outer wall of tubing is subject to being located at the squeezing action of rolling wheel on outer wall, produces radially plastic deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510533288.3A CN105156783A (en) | 2015-08-27 | 2015-08-27 | Pipe joint part and machining methods thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510533288.3A CN105156783A (en) | 2015-08-27 | 2015-08-27 | Pipe joint part and machining methods thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105156783A true CN105156783A (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510533288.3A Pending CN105156783A (en) | 2015-08-27 | 2015-08-27 | Pipe joint part and machining methods thereof |
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| CN (1) | CN105156783A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131420A (en) * | 2018-02-08 | 2019-08-16 | 浙江三花智能控制股份有限公司 | Electric expansion valve and its manufacturing method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3572777A (en) * | 1969-05-05 | 1971-03-30 | Armco Steel Corp | Multiple seal, double shoulder joint for tubular products |
| GB1597711A (en) * | 1977-01-07 | 1981-09-09 | Quraishi A H | Protectors for the ends of tubular elements |
| CN1131588A (en) * | 1995-12-11 | 1996-09-25 | 华中理工大学 | Mold-extruding, expanding and forming process for multi-way pipe and its die equipment |
| CN1560498A (en) * | 2004-03-04 | 2005-01-05 | 程宇鸣 | Thin stainless steel pipe with engaging formed screw connet and its manufacture method |
| CN200965113Y (en) * | 2006-10-18 | 2007-10-24 | 陈建强 | Thin wall rustless steel pipe rotary-inserting type adaptor |
| CN201180873Y (en) * | 2008-02-18 | 2009-01-14 | 吴百海 | Thin walled pipe connector |
| CN201237036Y (en) * | 2008-08-12 | 2009-05-13 | 林涛 | Thin-wall metal connecting pipe |
| CN101559447A (en) * | 2009-05-22 | 2009-10-21 | 姚宁 | Thin wall pipe connector and processing method thereof |
-
2015
- 2015-08-27 CN CN201510533288.3A patent/CN105156783A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3572777A (en) * | 1969-05-05 | 1971-03-30 | Armco Steel Corp | Multiple seal, double shoulder joint for tubular products |
| GB1597711A (en) * | 1977-01-07 | 1981-09-09 | Quraishi A H | Protectors for the ends of tubular elements |
| CN1131588A (en) * | 1995-12-11 | 1996-09-25 | 华中理工大学 | Mold-extruding, expanding and forming process for multi-way pipe and its die equipment |
| CN1560498A (en) * | 2004-03-04 | 2005-01-05 | 程宇鸣 | Thin stainless steel pipe with engaging formed screw connet and its manufacture method |
| CN200965113Y (en) * | 2006-10-18 | 2007-10-24 | 陈建强 | Thin wall rustless steel pipe rotary-inserting type adaptor |
| CN201180873Y (en) * | 2008-02-18 | 2009-01-14 | 吴百海 | Thin walled pipe connector |
| CN201237036Y (en) * | 2008-08-12 | 2009-05-13 | 林涛 | Thin-wall metal connecting pipe |
| CN101559447A (en) * | 2009-05-22 | 2009-10-21 | 姚宁 | Thin wall pipe connector and processing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131420A (en) * | 2018-02-08 | 2019-08-16 | 浙江三花智能控制股份有限公司 | Electric expansion valve and its manufacturing method |
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| PB01 | Publication | ||
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Application publication date: 20151216 |
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| RJ01 | Rejection of invention patent application after publication |