CN107138585B - A kind of internal pressure manufacturing process of middle empty class multilayer pipe - Google Patents
A kind of internal pressure manufacturing process of middle empty class multilayer pipe Download PDFInfo
- Publication number
- CN107138585B CN107138585B CN201710559946.5A CN201710559946A CN107138585B CN 107138585 B CN107138585 B CN 107138585B CN 201710559946 A CN201710559946 A CN 201710559946A CN 107138585 B CN107138585 B CN 107138585B
- Authority
- CN
- China
- Prior art keywords
- pipe
- layer pipe
- layer
- side wall
- multilayer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/049—Deforming bodies having a closed end
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/051—Deforming double-walled bodies
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to multilayer pipe machine-shaping fields, more particularly to a kind of internal pressure manufacturing process of middle empty class multilayer pipe, multilayer pipe include at least first layer pipe and be arranged with the second layer pipe outside first layer pipe, first layer pipe is shorter than second layer pipe, and internal pressure manufacturing process mainly comprises the following steps：By the multilayer seal of tube, high-pressure fluid is injected in first layer pipe, makes multilayer pipe that first time dilatancy occur outward inside first layer pipe；By first layer pipe, the second layer seal of tube after generation first time dilatancy, gap of cracking between the side wall of first layer pipe, the side wall of second layer pipe；High-pressure fluid is injected in gap between the side wall of first layer pipe, the side wall of second layer pipe, is made second layer pipe that second of dilatancy occur, is then formed between first layer pipe and second layer pipe hollow.The process of the present invention is simple, and tube body forming process welding, production cost is low, and quality is high.
Description
Technical field
The present invention relates to multilayer pipe machine-shaping field more particularly to a kind of internal pressure manufacturing process of middle empty class multilayer pipe.
Background technology
Middle empty class multilayer pipe mostly uses the technique manufacture of punching press and welding in the past.Such as middle empty class bimetallic tube, middle empty class are double
Layer pipe is chiefly used in automobile hand brake pipe, the method that past pipe fitting mainly uses punching press, and then welding splicing is spelled since bimetallic tube welds
Connect difficulty, especially inner tube difficulty bigger；In addition, spaced heat not only wastes material mainly by fillers such as asbestos in two layers of pipe
Material, and increase pipe fitting weight, it is unfavorable for lightweight；Since pipe fitting splices, product quality is set to be severely impacted, reliability is steady
Qualitative difference.
Invention content
The present invention is to solve existing technological deficiency, provides a kind of internal pressure manufacturing process of middle empty class multilayer pipe, work
Sequence is simple, and tube body forming process welding, production cost is low, and quality is high.Its specific technical solution is as follows：
The present invention discloses a kind of internal pressure manufacturing process of middle empty class multilayer pipe, and multilayer pipe includes at least first layer pipe and set
If with the second layer pipe outside first layer pipe, first layer pipe is shorter than second layer pipe, and internal pressure manufacturing process is implemented according to the following steps：
S001:Multilayer pipe assembly can be made in molding first mold of multilayer pipe, the first mold has the first molding position；
It it is inserted into first respectively cuts somebody's hair at the both ends of multilayer pipe and multilayer pipe is sealed；
S002：By the multilayer seal of tube, high-pressure fluid is injected in first layer pipe, make multilayer pipe inside first layer pipe outward
First time dilatancy occurs, until the side wall of first layer pipe and the side wall of second layer pipe fit to the first molding position inner wall；
S003：Multilayer pipe after generation first time dilatancy is assembled in the second mold, the second mold has second
It is molded position, the size of the second molding position is more than the size of the first molding position；
S004：Gap is strutted between the side wall of first layer pipe, the side wall of second layer pipe, is inserted respectively at the both ends of multilayer pipe
Enter second and cut somebody's hair and multilayer pipe is sealed；It is cut somebody's hair by second in gap between the side wall of first layer pipe, the side wall of second layer pipe
It struts to be formed；Second cuts somebody's hair the expanding section equipped with an inclined-plane；Second cuts somebody's hair internal the be axially arranged with for conveying high-pressure fluid
One delivery pipe, the first delivery pipe are cut somebody's hair through second；Second, which cuts somebody's hair, is additionally provided with and longitudinally perpendicular be communicated in the first delivery pipe and run through
It cuts somebody's hair in second the second delivery pipes for conveying high-pressure fluid of both sides；
S005：The conveying high-pressure fluid in the first delivery pipe, a part of high-pressure fluid in the first delivery pipe flow into first
In layer pipe, another part high-pressure fluid in the first delivery pipe flows to first layer pipe side wall and second layer pipe by the second delivery pipe
In gap between side wall, make second layer pipe that second of dilatancy occur, until the second molding of side wall fitting of second layer pipe
The inner wall of position；
S006：In the end of first layer pipe and second layer pipe, the gap welding between first layer pipe and second layer pipe is close
Envelope, and the gap between first layer pipe and second layer pipe carries out vacuumize process.
Further, the end of first layer pipe is located in second layer pipe.
Further, in step S002, when first time dilatancy occurs for multilayer pipe, first cuts somebody's hair inside while pushing away
Into to carry out axial supplement to multilayer pipe.
Further, the shape of the second molding position is identical as the first molding shape of position.
Further, in step S005, the side wall of second layer pipe becomes separate from the state of fitting first layer pipe side wall
During first layer pipe side wall state, the shape of first layer pipe is kept fixed.
Further, multilayer pipe further includes third layer pipe, and third layer pipe sleeve is set to outside second layer pipe, the molding of third layer pipe
When, by the multilayer pipe Jing Guo second of dilatancy be assemblied in third be molded position third mold in, third be molded position with
Second molding position shape is identical but the size ratio second of third molding position be molded position size it is big, second layer pipe side wall,
Strut the first gap between the side wall of third layer pipe, and by between first layer pipe side wall and second layer pipe side wall gap, second
The first gap sealing between the side wall and the side wall of third layer pipe of layer pipe, toward between first layer pipe side wall and second layer pipe side wall
Gap, second layer pipe side wall and third layer pipe side wall between the first gap injection high-pressure fluid so that third layer pipe side
Wall expansion is molded position until it fits to third.
Further, the end of second layer pipe is located in third layer pipe.
Further, multilayer pipe by metal material at.
Beneficial effects of the present invention：The present invention repeatedly carries out expansion process by high-pressure fluid to multilayer pipe, makes multilayer pipe
Welding is molded, and simplifies process, reduces production cost, improves product quality；It is ingenious during second of dilatancy
Using pascal's principle, the structure inside multilayer pipe and size requirement ensure that；Between each pipe side wall of multilayer pipe vacuum every
Heat avoids filling with insulation material, saves raw material.
Description of the drawings
Fig. 1 is the schematic diagram that bimetallic tube occurs before first time dilatancy in the embodiment of the present invention 1；
Fig. 2 is the schematic diagram that bimetallic tube occurs after first time dilatancy in the embodiment of the present invention 1；
Fig. 3 is the schematic diagram that bimetallic tube occurs before second of dilatancy in the embodiment of the present invention 1；
Fig. 4 is the schematic diagram that bimetallic tube occurs after second of dilatancy in the embodiment of the present invention 1；
Fig. 5 is the schematic diagram of the semi-finished product of multilayer pipe product of the embodiment of the present invention；
Fig. 6 is that the present invention first cuts somebody's hair structural schematic diagram；
Fig. 7 is that the present invention second cuts somebody's hair structural schematic diagram.
It is marked in figure：Multilayer pipe 10, first layer pipe 101, second layer pipe 102, gap 103, the first mold 20, the first molding
Position 201, first cuts somebody's hair 30, conveyance conduit 301, the second mold 220, the second molding position 221, and second cuts somebody's hair 320, the first delivery pipe
321, the second delivery pipe 322, expanding section 326, multilayer pipe product 40, weldering circle 401.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, do not indicate or imply the indicated device or element must have a particular orientation, with spy
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connects, and can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary two members
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or "lower"
It may include that the first and second features are in direct contact, can also not be to be in direct contact but pass through it including the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " include first special
Sign is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Below by specific implementation mode combination attached drawing, invention is further described in detail.It please refers to Fig.1 to Fig. 7.
The present invention discloses a kind of internal pressure manufacturing process of middle empty class multilayer pipe, and multilayer pipe 10 is by more bore differences, length
Successively fitting forms different pipelines, and the bore of the outer pipeline of relative aperture of inner pipeline wants small to facilitate fitting, inner
The length of pipeline shorter than the length of outer pipeline pipeline welded and sealed to facilitate in subsequent step.This implementation
The multilayer pipe 10 of example includes first layer pipe 101, second layer pipe 102.The tube layer of the multilayer pipe 10 can be more than two layers.Inside it is pressed into
Shape method sequentially includes the following steps：
S001:The assembly of multilayer pipe 10 can be made in 10 molding first mold 20 of multilayer pipe, the first mold 20 has the
One molding position 201；
S002：Multilayer pipe 10 is sealed, high-pressure fluid is injected in first layer pipe 101, makes multilayer pipe 10 from first layer pipe
First time dilatancy occurs inside 101 outward, until the fitting of the side wall of the side wall of first layer pipe 101 and second layer pipe 102
To the first molding position inner wall；
S003：Multilayer pipe 10 after generation first time dilatancy is assembled in the second mold 220, the second mold 220
With the second molding position 221, the size of the second molding position 221 is more than the size of the first molding position 201；
S004：Strut gap between the side wall of first layer pipe 101, the side wall of second layer pipe 102, and by first layer pipe
101, second layer pipe 102 and gap sealing；
S005：High-pressure fluid is injected in first layer pipe 101 and in gap, so that second layer pipe 102 is occurred swollen for the second time
Bulging deformation, until the inner wall of the second molding of side wall fitting position 221 of second layer pipe 102；
S006：In the end of first layer pipe 101 and second layer pipe 102 between first layer pipe 101 and second layer pipe 102
Gap welded seal, and the gap between first layer pipe 101 and second layer pipe 102 carries out vacuumize process.
The details of above steps is described in further details：
First layer pipe 101 is shorter than second layer pipe 102 to facilitate the welding between seal for pipe joints and pipeline.First layer pipe
101 is different from the material used in second layer pipe 102, such as the heat resistance of the material of first layer pipe 101 compares second layer pipe 102
The heat resistance of material is high, so use cost that can reduce material.
The first mold 20 mentioned in step s001 includes upper die and lower die, and the inner surfaces of upper die and lower die is equipped with pair
The first molding position 201 claiming, multilayer pipe 10 being processed under the action of high-pressure fluid specific shape.
In step s002, in order to carry out first time dilatancy, technological means in the technical scheme to multilayer pipe 10
It is：It first to seal multilayer pipe 10 and inject the liquid of high pressure into multilayer pipe 10 so that 10 dilatancy of multilayer pipe.In order to implement
The technological means, the technical program cut somebody's hair 30 using a kind of stepped first, multilayer pipe 10 by increasing lengths pipeline set
It closes, therefore its port is ladder-like in interior swaged, first cuts somebody's hair the 30 stepped invagination ranks for just coordinating multilayer pipes 10
Trapezoidal port.First cut somebody's hair 30 first order ladder in front is an inserting paragraph, has axially mounted use in the inserting paragraph
There is seal section behind the conveyance conduit 301 of conveying high-pressure fluid, inserting paragraph, seal section is bigger than inserting paragraph, and inserting paragraph is inserted into
The first layer pipe 101 of multilayer pipe 10, then seal section resist the port of the first layer pipe 101 to seal the first layer pipe 101.It is close
After having sealed first layer pipe 101, so that it may to start to carry out first time dilatancy to multilayer pipe 10.The tool of first time dilatancy
Body process is：First cut somebody's hair 30 by conveyance conduit toward 101 conveying high-pressure fluid of first layer pipe, under the action of high-pressure fluid,
The first layer pipe 101 sealed expands, and after first layer pipe 101 expands, pushes it in 101 outside of first layer pipe
Second layer pipe 102 expand, last first layer pipe 101, second layer pipe 102 expand, when expansion to a certain extent
When, the side wall of second layer pipe 102 occurs to squeeze and become along the first molding 201 shape of position of the first mold 20 with the first mold 20
Specific shape.Its formed in mould principle is known technology, is just not described at this.After multilayer pipe dilatancy, such as Fig. 2 institutes
Show, the side wall of first layer pipe 101, the side wall of second layer pipe 102 can be closely bonded to each other due to the effect of pressure one
It rises.
The second mold 220 mentioned in step s003 includes upper die and lower die, between the upper die and lower die of the second mold
Distance it is bigger than the distance between the mould of the first mold 20, lower die, this is to make to have occurred and that first time dilatancy
Multilayer pipe 10 can continue second of dilatancy in the second mold 220.The interior table of the upper die and lower die of second mold 220
Face is equipped with the second molding position 221, and the shape of the second molding position 221 is identical as the first molding shape of position 201, but the second molding
The size that the size ratio first of position 221 is molded position 201 is big so as to have occurred and that the multilayer pipe 10 of first time dilatancy can be along
Continue that second of dilatancy occurs in the second molding position 221.
In step s004, in order to which second of dilatancy can occur for multilayer pipe 10, technological means in the technical scheme
It is：First sealing first layer pipe 101, second layer pipe 102, then inject highly pressurised liquid into first layer pipe 101, while again to the
Injection is connected to another with the highly pressurised liquid in first layer pipe 101 between the side wall of one layer of pipe 101 and the side wall of second layer pipe 102
Highly pressurised liquid can maintain the shape of first layer pipe 101 to remain unchanged and second layer pipe 102 under the action of two strands of highly pressurised liquids
Side wall of the side wall far from first layer pipe 101 until be bonded the second mold 220 second molding position 221.It can maintain first layer pipe
The principle of 101 shape invariance is pascal's principle related with hydrodynamics.In order to implement the technological means, the technical program
In, it is inserted into stair-stepping second respectively at the both ends of multilayer pipe 10 and cuts somebody's hair 320, second cuts somebody's hair 320 expanding sections for being equipped with an inclined-plane
326, which can suitably expand the nozzle of second layer pipe 102, so as to be produced between first layer pipe 101 and second layer pipe 102
A raw small―gap suture.Second cuts somebody's hair the first delivery pipe 321 being axially arranged with inside 320 for conveying high-pressure fluid, the first conveying
Pipe 321 cuts somebody's hair 320 through second.Second, which cuts somebody's hair, 320 is additionally provided with and longitudinally perpendicular is communicated in the first delivery pipe 321 and through second
It cuts somebody's hair the second delivery pipes 322 for conveying high-pressure fluid of 320 both sides.First layer pipe 101 is inserted into second cut somebody's hair 320 front end
Interior, which can support first layer pipe 101 to keep multilayer pipe 10 hanging, make side wall and the second molding position of multilayer pipe 10
There are gaps between 221, and multilayer pipe 10 is facilitated to carry out second of dilatancy.Stair-stepping second cut somebody's hair 320 with its pipe end by
Just coordinate in the long short duct fitting stair-stepping multilayer pipe 10 that is shaped to invaginate, and make by this method in multilayer pipe 10
One layer of pipe 101, second layer pipe 102 are sealed, and between first layer pipe 101, second layer pipe 102 also at opposite independence,
Sealing.It cuts somebody's hair after 320 pairs of multilayer pipes 10 are sealed by second, multilayer pipe 10 can start second of dilatancy,
The process of second of dilatancy is：Second cut somebody's hair 320 the first delivery pipe 321 injects the second high pressure into first layer pipe 101
Fluid, at the same time second cut somebody's hair 320 the second delivery pipe 322 to the side wall of first layer pipe 101, the side wall of second layer pipe 102
Between gap in inject high-pressure fluid because the first delivery pipe 321 is connected to the second delivery pipe 322, the first delivery pipe
The high-pressure fluid of 321 outputs is identical as the pressure of high-pressure fluid that the second delivery pipe 322 exports.Under the action of high-pressure fluid,
Side wall of the side wall of second layer pipe 102 far from first layer pipe 101, until the side wall of second layer pipe 102 arrive at and be bonded second at
Type position 221.Its expand principle be：Between high-pressure fluid is completely filled with 102 side wall of 101 side wall of first layer pipe and second layer pipe
Before, the side wall of second layer pipe 102 can be because the pressure being subject to inside and outside wall be different, and the side wall of each pipeline is made to expand outward.By
In at the beginning, also there is high-pressure fluid in first layer pipe 101, according to pascal's principle, pressure that the inside and outside wall of first layer pipe 101 is subject to
Power is identical, so the shape of first layer pipe 101 remains unchanged.
After second of dilatancy, the appearance of multilayer pipe 10 is constant, only because expanding and size being caused to become
Greatly, and the side wall of the first layer pipe 101 of multilayer pipe 10 and the side wall of second layer pipe 102 can become hollow from original fit-state
State finally passes through step s005, so that the port of first layer pipe 101 is welded with the port of second layer pipe 102 by using weldering circle 401
It is connected together, and the vacuumize process between the side wall and the side wall of second layer pipe 102 of phase first layer pipe 101, finally obtains more
Layer pipe product 40.
Multilayer pipe can also be that the pipe of three-layer pipe or three layers or more, third layer pipe sleeve are set to outside second layer pipe 102, second
The end of layer pipe 102 is located in third layer pipe.When third layer pipe is molded, the multilayer pipe 10 Jing Guo second of dilatancy is assembled
In being molded in the third mold of position with third, third molding position is identical as the second molding shape of position 221, and third is molded position
The size that size ratio second is molded position 221 is big, and the first seam is strutted between the side wall of second layer pipe 102, the side wall of third layer pipe
Gap, and by the side wall and third in gap 103, second layer pipe 102 between 102 side wall of 101 side wall of first layer pipe and second layer pipe
Layer pipe side wall between the first gap sealing, toward between 102 side wall of 101 side wall of first layer pipe and second layer pipe gap 103,
High-pressure fluid is injected so that the side wall of third layer pipe is swollen in the first gap between the side wall and third layer pipe side wall of second layer pipe 102
It is swollen to be molded position until it fits to third.
In the description of this specification, reference term " embodiment ", " some embodiments ", " an implementation
The description of example ", " some embodiments ", " example ", " specific example " or " some examples " etc. means to combine the embodiment or example
Particular features, structures, materials, or characteristics described are included at least one embodiment or example of the invention.In this explanation
In book, schematic expression of the above terms may not refer to the same embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more of the embodiments or examples.
The above content is combining, specific embodiment is made for the present invention to be further described, and it cannot be said that this hair
Bright specific implementation is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, it is not taking off
Under the premise of from present inventive concept, a number of simple deductions or replacements can also be made.
Claims (8)
1. a kind of internal pressure manufacturing process of middle empty class multilayer pipe, the multilayer pipe include at least first layer pipe and be arranged with it is described
Second layer pipe outside first layer pipe, which is characterized in that the first layer pipe is shorter than the second layer pipe, the internal pressure manufacturing process
Implement according to the following steps：
S001:Multilayer pipe assembly can be made in molding first mold of the multilayer pipe, first mold has the
One molding position；It it is inserted into stepped first respectively cuts somebody's hair at the both ends of the multilayer pipe and the multilayer pipe is sealed；
S002：By the multilayer seal of tube, high-pressure fluid is injected in the first layer pipe, makes the multilayer pipe from described first
First time dilatancy occurs outward inside layer pipe, until the side wall of the side wall of the first layer pipe and second layer pipe patch
Close the first molding position inner wall；
S003：The multilayer pipe after generation first time dilatancy is assembled in the second mold, second mold has
The size of second molding position, second molding position is more than the described first size for being molded position；
S004：Gap is strutted between the side wall of first layer pipe, the side wall of second layer pipe, is inserted respectively at the both ends of the multilayer pipe
Enter second and cut somebody's hair and the multilayer pipe is sealed；The side wall of the first layer pipe, the second layer pipe side wall between seam
Gap is cut somebody's hair to strut and be formed by described second；Described second cuts somebody's hair the expanding section equipped with an inclined-plane；Described second cuts somebody's hair inside axially
Equipped with the first delivery pipe for conveying high-pressure fluid, the first delivery pipe is cut somebody's hair through described second；Described second, which cuts somebody's hair, also sets
Have it is longitudinally perpendicular be communicated in the first delivery pipe and through described second cut somebody's hair both sides for the second defeated of conveying high-pressure fluid
Send pipe；
S005：The conveying high-pressure fluid in first delivery pipe, a part of high-pressure fluid in first delivery pipe flow into
In the first layer pipe, another part high-pressure fluid in first delivery pipe flows to described by second delivery pipe
In gap between one layer of pipe side wall and the second layer pipe side wall, make the second layer pipe that second of dilatancy occur, directly
The inner wall of second molding position is bonded to the side wall of the second layer pipe；
S006：In the end of the first layer pipe and the second layer pipe between the first layer pipe and the second layer pipe
Gap welded seal, and the gap between the first layer pipe and the second layer pipe carries out vacuumize process.
2. a kind of internal pressure manufacturing process of middle empty class multilayer pipe according to claim 1, which is characterized in that the first layer
The end of pipe is located in the second layer pipe.
3. a kind of internal pressure manufacturing process of middle empty class multilayer pipe according to claim 1, which is characterized in that in step S002
In, when the multilayer pipe occur first time dilatancy when, described first cut somebody's hair inside simultaneously propulsion with to the multilayer pipe into
Row axial supplement.
4. a kind of internal pressure manufacturing process of middle empty class multilayer pipe according to claim 1, which is characterized in that the second one-tenth described
The shape of type position is identical as the first molding shape of position.
5. a kind of internal pressure manufacturing process of middle empty class multilayer pipe according to claim 1, which is characterized in that in step S005
In, the side wall of the second layer pipe is become from the state for being bonded the first layer pipe side wall far from the first layer pipe side wall state
During, the shape of the first layer pipe is kept fixed.
6. a kind of internal pressure manufacturing process of middle empty class multilayer pipe according to claim 1, which is characterized in that the multilayer pipe
Further include third layer pipe, the third layer pipe sleeve is set to outside the second layer pipe, when the third layer pipe is molded, by the process
The multilayer pipe of second of dilatancy, which is assemblied in, to be molded with third in the third mold of position, third molding position and described the
The shape of two molding positions is identical but the size ratio of third molding position described in the second molding position size it is big, in the second layer
The side wall of pipe, the third layer pipe side wall between strut the first gap, and by the first layer pipe side wall and the second layer
The first gap sealing between the side wall and the side wall of the third layer pipe in gap, the second layer pipe between pipe side wall, it is past
The side wall in gap, the second layer pipe between the first layer pipe side wall and the second layer pipe side wall and the third layer pipe
The first gap injection high-pressure fluid between side wall is so that the side wall of the third layer pipe is expanded until it fits to the third
It is molded position.
7. a kind of internal pressure manufacturing process of middle empty class multilayer pipe according to claim 6, which is characterized in that the second layer
The end of pipe is located in the third layer pipe.
8. according to a kind of internal pressure manufacturing process of middle empty class multilayer pipe of claim 1-7 any one of them, which is characterized in that institute
State multilayer pipe by metal material at.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710559946.5A CN107138585B (en) | 2017-07-11 | 2017-07-11 | A kind of internal pressure manufacturing process of middle empty class multilayer pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710559946.5A CN107138585B (en) | 2017-07-11 | 2017-07-11 | A kind of internal pressure manufacturing process of middle empty class multilayer pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107138585A CN107138585A (en) | 2017-09-08 |
| CN107138585B true CN107138585B (en) | 2018-09-14 |
Family
ID=59776307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710559946.5A Active CN107138585B (en) | 2017-07-11 | 2017-07-11 | A kind of internal pressure manufacturing process of middle empty class multilayer pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107138585B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107639172B (en) * | 2017-11-10 | 2023-06-27 | 南昌航空大学 | Forming method and device for simultaneously realizing pipe end necking thickening |
| CN110548799B (en) * | 2019-09-10 | 2024-05-24 | 山东金润德新材料科技股份有限公司 | Device and method for ultrahigh-pressure water expansion and vacuum auxiliary forming of clamping and pressing type pipe fitting |
| CN112974614B (en) * | 2021-02-08 | 2022-07-05 | 航天材料及工艺研究所 | Method for controlling wall thickness uniformity of superplastic forming of titanium alloy thin-wall seamless lining straight cylinder section |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19513559C2 (en) * | 1995-04-18 | 1997-09-25 | Werdau Fahrzeugwerk | Device for producing deformed multi-walled tubes with one or more cavities between the walls |
| DE19511970C2 (en) * | 1995-04-18 | 1998-07-09 | Werdau Fahrzeugwerk | Process for producing deformed multi-walled tubes with cavities between the walls |
| CN103272878A (en) * | 2013-06-09 | 2013-09-04 | 汤晓明 | Method for manufacturing composite steel tube |
| CN103691762A (en) * | 2013-12-24 | 2014-04-02 | 南京航空航天大学 | Complicated-shape double-layer pipe manufacturing method and sealing device |
| CN106363070B (en) * | 2016-08-25 | 2018-08-17 | 宁波市沃瑞斯机械科技有限公司 | A kind of processing technology of metal bi multiple tube |
-
2017
- 2017-07-11 CN CN201710559946.5A patent/CN107138585B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107138585A (en) | 2017-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107138585B (en) | A kind of internal pressure manufacturing process of middle empty class multilayer pipe | |
| US8051628B2 (en) | Device and method for gas filling of a duct in a container | |
| CN105234242B (en) | Rubber pocket hydroforming equipment in one kind pipe | |
| CN104084469A (en) | Tee pipe hydraulic molding device | |
| US20180340641A1 (en) | Resin pipe joint, piping, and piping production method | |
| CN101801643B (en) | Method for manufacturing tubes by welding | |
| CN105415695A (en) | Continuous fiber-reinforced pipe butt joint method | |
| CN206882484U (en) | Bellows hydraulic pressure unicast continuous forming machine | |
| CN116697154A (en) | Bending double-layer pipe with good heat insulation and manufacturing method thereof | |
| CN107138586B (en) | A kind of structure of cutting somebody's hair for sealing multilayer pipe | |
| CN102849317A (en) | Multi-layer seamless hose and manufacturing method thereof | |
| CN1695843A (en) | Method for manufacturing parts of multiple way union | |
| CN110228185A (en) | A kind of band and reinforcing rib winding pipe is produced with the band | |
| JPS5973130A (en) | Production of branch pipe for pipe joint | |
| CN104344128B (en) | One can coiling reinforced composite pipe assembly | |
| JP2000334818A (en) | Molding, blow molding machine for molding. and its molding method | |
| KR20150075672A (en) | Manuacturing method of hydroforming product and hydroforming product | |
| CN107379562A (en) | The seamless hot melting and connecting method of the outer expanding of large-diameter steel plastic composite pressure pipe | |
| CN102963601A (en) | Seamless welding hose and production method thereof | |
| CN103568321B (en) | Connecting pipe of engine forming apparatus and forming method thereof | |
| CN207190210U (en) | A kind of HDPE ribbed pipes coating mould | |
| CN221434603U (en) | Forming device for ultra-high amplitude of thin-wall stainless steel tube | |
| CN215209626U (en) | Preset cladding nozzle for semiconductor laser cladding equipment | |
| CN221402166U (en) | Sealing and welding structure for pipe orifice of pipe fitting | |
| CN106734419A (en) | A kind of elbow member bulging prevents the corrugated method of interior angle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |