CN111271537B - Bent pipe, manufacturing die and manufacturing method thereof - Google Patents
Bent pipe, manufacturing die and manufacturing method thereof Download PDFInfo
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- CN111271537B CN111271537B CN202010055040.1A CN202010055040A CN111271537B CN 111271537 B CN111271537 B CN 111271537B CN 202010055040 A CN202010055040 A CN 202010055040A CN 111271537 B CN111271537 B CN 111271537B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 164
- 238000005520 cutting process Methods 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 9
- 239000012530 fluid Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000004033 plastic Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 239000012774 insulation material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- F16L43/00—Bends; Siphons
- F16L43/008—Bends; Siphons made from plastic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
-
- 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
- F16L43/00—Bends; Siphons
- F16L43/001—Bends; Siphons made of metal
-
- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/0332—Noise absorbers by inserting a body of compressible material in the pipe
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/22—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for bends
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The application discloses a bent pipe, a manufacturing die and a manufacturing method thereof, and belongs to the technical field of medium pipe manufacturing. The elbow comprises a plurality of sections of pipes; the multi-section pipes are fixedly connected into a whole through the side wall, and the included angle between the axial directions of the axial first-section pipe and the axial direction of the axial tail-section pipe of the multi-section pipe is a set angle. In addition, the application also discloses a manufacturing die of the bent pipe and a manufacturing method for manufacturing the bent pipe by using the manufacturing die. By the aid of the manufacturing die and the manufacturing method, manufacturing efficiency of manufacturing the bent pipe with the set angle can be improved, and manufacturing time of manufacturing the bent pipe with the set angle is saved.
Description
Technical Field
The invention relates to the technical field of medium tube manufacturing, in particular to a bent tube, a manufacturing die and a manufacturing method thereof.
Background
In the prior art, the fluid medium is usually conveyed through the metal pipeline, because the heat conduction coefficient of the metal is larger, the heat loss is faster, under the working condition that the heat preservation is required, in order to ensure that the temperature of the fluid medium in the conveying process in the metal pipeline is constant, a heat preservation pipe made of a material with a lower heat conduction coefficient is generally required to be used for preserving the heat of the flowing fluid medium, however, in some cases, when the trend of the fluid pipeline is limited by space, the heat preservation pipe is required to be turned to better meet the requirement of conveying space, but the difficulty of manufacturing the bent pipe with the turn is higher for the material with the lower heat conduction coefficient, particularly the rubber plastic material.
Disclosure of Invention
In view of the above, the present invention provides a bent pipe, a manufacturing mold and a manufacturing method thereof, by using the manufacturing mold and the manufacturing method, the manufacturing efficiency of manufacturing the bent pipe with a set angle can be improved, and the manufacturing time of manufacturing the bent pipe with the set angle can be saved, so that the bent pipe is more practical.
In order to achieve the first object, the technical scheme of the bent pipe provided by the invention is as follows:
the bent pipe provided by the invention comprises a plurality of sections of pipes,
The multi-section pipes are fixedly connected into a whole through the side wall,
The included angle between the axial directions of the axial first section pipe and the axial direction of the axial tail section pipe of the multi-section pipe is a set angle.
The bent pipe provided by the invention can be further realized by adopting the following technical measures.
Preferably, the two-section type bent pipe comprises a first section pipe (9) and a tail section pipe (11),
The head section pipe (9) and the tail section pipe (11) are fixedly connected into a whole through the side wall, a first connecting surface (17) is formed between the head section pipe (9) and the tail section pipe (11),
The included angle between the axial direction of the head section pipe (9) and the axial direction of the tail section pipe (11) is 180-2 alpha,
The included angle between the axial direction of the head section pipe (9) and the first connecting surface (17) is 90 degrees plus alpha,
The included angle between the axial direction of the tail section pipe (11) and the first connecting surface (17) is 90 degrees plus alpha,
Wherein alpha is an included angle between the radial direction of the first section pipe (9) and the first connecting surface (17), or an included angle between the radial direction of the tail section pipe (11) and the first connecting surface (17); alpha >0.
Preferably, the three-section bent pipe comprises a first section pipe (9), a connecting pipe (10) and a tail section pipe (11),
The head section pipe (9), the connecting pipe (10) and the tail section pipe (11) are fixedly connected into a whole through side walls in sequence, a second connecting surface (12) is formed between the head section pipe (9) and the connecting pipe (10), a third connecting surface (13) is formed between the tail section pipe (11) and the connecting pipe (10), an included angle between the axial direction of the head section pipe (9) and the axial direction of the tail section pipe (11) is 180-2 (alpha+beta),
The included angle between the axial direction of the head section pipe (9) and the second connecting surface (12) is 90 degrees plus alpha,
The included angle between the second connecting surface (12) and the third connecting surface (13) is alpha+beta,
The included angle between the axial direction of the tail section pipe (11) and the third connecting surface (13) is 90 degrees plus beta,
Wherein,
Alpha is the included angle between the radial direction of the head section pipe (9) and the second connecting surface (12),
Beta is the included angle between the radial direction of the tail section pipe (11) and the third connecting surface (13);
α、β>0。
Preferably, the multi-section pipes are fixedly connected into a whole through side walls in a gluing mode.
Preferably, the multi-section tube is made of a heat-insulating material.
Preferably, the connecting pipe (10) has a transition section (14) on the inside of the curve.
In order to achieve the second purpose, the technical scheme of the manufacturing die for the bent pipe provided by the invention is as follows:
The invention provides a manufacturing mould of an elbow, which comprises a body (1),
The body (1) comprises a first side wall (2), a bottom surface (3) and a second side wall (4),
The first side wall (2) is fixedly connected with one side edge of the bottom surface (3) through the bottom surface edge thereof, the second side wall (4) is fixedly connected with the opposite side edge of the bottom surface (3) through the bottom surface edge thereof, so that a containing space is formed among the first side wall (2), the bottom surface (3) and the second side wall (4),
A first group of vertical slits are arranged on the first side wall (2),
A second group of vertical slits are arranged on the second side wall (4),
An included angle between an imaginary connecting line between at least one pair of bottommost end points of the first group of vertical slits and the second group of vertical slits and a radial direction of the bottom surface (3) is larger than 0.
The manufacturing die of the bent pipe provided by the invention can be further realized by adopting the following technical measures.
As a preferred alternative to this,
A first vertical slit (6) is arranged on the first side wall (2), a second vertical slit (5) is arranged on the second side wall (4),
An included angle between an imaginary first connecting line between the bottommost end point of the first vertical slit (6) and the bottommost end point of the second vertical slit (5) and the radial direction of the bottom surface (3) is alpha;
Wherein α >0.
As a preferred alternative to this,
A first vertical slit (6) and a third vertical slit (7) are arranged on the first side wall (2), a second vertical slit (5) is arranged on the second side wall (4),
An included angle between an imaginary first connecting line between the bottommost end point of the first vertical slit (6) and the bottommost end point of the second vertical slit (5) and the radial direction of the bottom surface (3) is alpha, and an included angle between an imaginary second connecting line between the bottommost end point of the third vertical slit (7) and the bottommost end point of the second vertical slit (5) and the radial direction of the bottom surface (3) is beta;
Wherein alpha and beta are >0.
As a preferred alternative to this,
A first vertical slit (6) and a third vertical slit (7) are arranged on the first side wall (2), a second vertical slit (5) and a fifth vertical slit (16) are arranged on the second side wall (4),
An included angle between an imaginary first connecting line between the bottommost end point of the first vertical slit (6) and the bottommost end point of the second vertical slit (5) and the radial direction of the bottom surface (3) is alpha, and an included angle between an imaginary fourth connecting line between the bottommost end point of the third vertical slit (7) and the bottommost end point of the fifth vertical slit (16) and the radial direction of the bottom surface (3) is beta;
Wherein alpha and beta are >0.
Preferably, a fourth vertical slit (8) is also arranged on the first side wall (2),
An imaginary third line between the bottommost end point of the fourth vertical slit (8) and the bottommost end point of the second vertical slit (5) is in the radial direction of the bottom surface (3).
Preferably, the two free peaks of the first side wall (2) and the two free peaks of the second side wall (4) are in rounded transition.
Preferably, the distance between the first side wall (2) and the second side wall (4) is equal to the outer diameter of the pipe to be cut.
In order to achieve the third object, the technical scheme of the manufacturing method of the bent pipe provided by the invention is as follows:
the manufacturing method of the bent pipe provided by the invention comprises the following steps:
the pipe to be cut is axially accommodated in the manufacturing mould of the bent pipe provided by the invention;
Performing n-1 times of cutting operation according to the number n of the sections of the multi-section pipe forming the bent pipe to obtain n sections of pipes;
Turning over the selected section of the n sections of pipes by 180 degrees in an axial mirror image mode through the pipe to be cut to obtain a selected section of pipe after mirror image turning;
Fixedly butting the selected section of tube after mirror image overturning and the rest section of tube according to a set sequence by using cutting surfaces of the selected section of tube and the rest section of tube to obtain the bent tube;
Wherein n is a positive integer greater than 1.
The manufacturing method of the bent pipe provided by the invention can be further realized by adopting the following technical measures.
As a preferred alternative to this,
The pipe to be cut is axially accommodated in the manufacturing mould of the bent pipe provided by the invention;
performing a first cut in the direction of the imaginary first line to obtain a first section of tubing (9) and a tail section of tubing (11);
Executing the first mode or the second mode to obtain the two-section bent pipe provided by the invention, wherein:
the first way is: turning the first section pipe (9) by 180 degrees in an axial mirror image mode through the pipe to be cut to obtain a mirror-turned first section pipe (9),
The head section pipe (9) after mirror image overturning is fixedly connected to the cutting surface of the tail section pipe (11) in a butt joint mode through the cutting surface of the head section pipe, and the two-section bent pipe provided by the invention is obtained;
the second way is: turning the tail section tube (11) by 180 degrees according to the axial mirror image of the tube to be cut to obtain a head section tube tail section tube (11) after the axial mirror image turning,
And fixing the head section pipe (11) subjected to the axial mirror image overturning to the cutting surface of the head section pipe (9) by the cutting surface of the head section pipe, so as to obtain the two-section bent pipe provided by the invention.
As a preferred alternative to this,
The pipe to be cut is axially accommodated in the manufacturing mould of the bent pipe provided by the invention;
performing a first cut in the direction of the imaginary first line to obtain a first section of tubing (9) and a tail section of tubing (11);
taking any one of the first section pipe (9) or the tail section pipe (11) as a selected pipe, and turning over the pipe to be cut by 180 degrees in the radial direction to obtain a selected pipe after turning over in the radial direction;
The selected pipe after radial overturning is axially contained in the manufacturing mould of the bent pipe again;
performing a second cut along the imaginary first line direction to obtain a first length of tubing (9), a connecting tube (10) and a remaining tubing after the connecting tube (10) has been cut off by the selected tubing;
turning the rest pipe 180 degrees in the radial direction of the pipe to be cut to obtain a tail section pipe (11);
Executing the third mode or the fourth mode to obtain the three-section bent pipe provided by the invention, wherein,
Third mode:
Turning the first section pipe (9) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a first section pipe (9) after the axial mirror image is turned;
Turning the tail section pipe (11) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a tail section pipe (11) after the axial mirror image is turned;
The head section pipe (9), the connecting pipe (10) and the tail section pipe (11) after the axial mirror image overturning are fixedly butted with the cutting surfaces of the head section pipe, the connecting pipe and the tail section pipe in sequence to obtain the three-section bent pipe provided by the invention;
fourth mode:
turning the connecting pipe (10) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a connecting pipe (10) after the axial mirror image is turned;
The first section pipe (9), the connecting pipe (10) after the axial mirror image overturning and the tail section pipe are fixedly butted with each other through cutting surfaces of the first section pipe, the connecting pipe and the tail section pipe in sequence to obtain the three-section bent pipe provided by the invention, wherein alpha=beta >0.
As a preferred alternative to this,
The pipe to be cut is axially accommodated in the manufacturing mould of the bent pipe provided by the invention;
Performing a first cut in the direction of the imaginary first line;
Performing a second cut along the direction of the imaginary second line or the imaginary fourth line to obtain a first section of pipe (9), a connecting pipe (10) and a tail section of pipe (11);
Executing the third mode or the fourth mode to obtain the three-section bent pipe provided by the invention, wherein,
Third mode:
Turning the first section pipe (9) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a first section pipe (9) after the axial mirror image is turned;
Turning the tail section pipe (11) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a tail section pipe (11) after the axial mirror image is turned;
The head section pipe (9), the connecting pipe (10) and the tail section pipe (11) after the axial mirror image overturning are fixedly butted with the cutting surfaces of the head section pipe, the connecting pipe and the tail section pipe in sequence to obtain the three-section bent pipe provided by the invention;
fourth mode:
turning the connecting pipe (10) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a connecting pipe (10) after the axial mirror image is turned;
the first section pipe (9), the connecting pipe (10) after the axial mirror image overturning and the tail section pipe are fixedly butted by the cutting surfaces of the first section pipe (9), the connecting pipe and the tail section pipe in sequence, so that the three-section bent pipe provided by the invention is obtained.
Preferably, the transition section (14) is left in the formation of the connecting tube (10).
In the process of manufacturing the bent pipe by using the manufacturing die and the manufacturing method provided by the invention, only the pipe to be cut is required to be axially accommodated in the manufacturing die of the bent pipe provided by the invention; performing n-1 times of cutting operation according to the number n of sections of the multi-section pipe forming the bent pipe to obtain n sections of pipe; turning the selected section of the n sections of pipes by 180 degrees in an axial mirror image mode through the pipe to be cut to obtain the selected section of pipes after mirror image turning; the selected section pipe and the rest section pipes after mirror image overturning are fixedly butted with the cutting surfaces according to a set sequence to obtain the bent pipe, wherein n is a positive integer greater than 1. In practice, compared with the two-section type bent pipe and the three-section type bent pipe which are commonly used, the manufacturing die and the manufacturing method can improve the manufacturing efficiency of manufacturing the bent pipe, save the manufacturing time of manufacturing the bent pipe, and have low manufacturing cost and die cost.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic view of a two-stage elbow according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a three-section elbow according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a typical perspective structure of a mold for manufacturing an elbow according to an embodiment of the present invention;
FIG. 4 is a schematic view of a bottom surface of a mold for manufacturing an elbow and an imaginary first line according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a typical perspective structure of a mold for manufacturing an elbow according to a fourth embodiment of the present invention;
FIG. 6 is a schematic view of the bottom surface of the mold for manufacturing the bent pipe, and the first and second virtual lines according to the fourth embodiment of the present invention;
FIG. 7 is a schematic diagram of a typical perspective structure of a mold for manufacturing an elbow according to a fifth aspect of the present invention;
FIG. 8 is a schematic view of the bottom surface of a mold for manufacturing an elbow according to a fifth aspect of the present invention, and an imaginary first line and an imaginary fourth line;
FIG. 9 is a schematic diagram of a typical perspective structure of a mold for manufacturing an elbow according to a sixth aspect of the present invention;
fig. 10 is a schematic view of the bottom surface of the mold for manufacturing the bent pipe and the virtual first, second and third lines according to the sixth embodiment of the present invention;
FIG. 11 is a schematic diagram showing steps of manufacturing a two-stage bent pipe according to the first embodiment of the present invention by using a manufacturing mold for a bent pipe according to any one of the third to sixth embodiments of the present invention;
Fig. 12 is a schematic diagram showing a step of manufacturing a three-section bent pipe according to the second embodiment of the present invention by using a manufacturing mold for a bent pipe according to the third embodiment of the present invention;
Fig. 13 is a schematic diagram showing a step of manufacturing a three-section bent pipe according to the second embodiment of the present invention by using a manufacturing mold for a bent pipe according to the fourth embodiment of the present invention, wherein the inner side of the connecting pipe 10 is free from excessive sections;
Fig. 14 is a schematic diagram showing a step of manufacturing a three-section bent pipe according to the second embodiment of the present invention by using a manufacturing mold for a bent pipe according to the fourth embodiment of the present invention, wherein an excessive section 14 is provided on the inner side of a turn of the connecting pipe 10;
FIG. 15 is a flowchart of the general steps of the method for manufacturing a bent pipe according to the present invention;
FIG. 16 is a flow chart of steps of a method for manufacturing a bent pipe according to a seventh embodiment of the present invention;
FIG. 17 is a flow chart illustrating steps of a method for manufacturing a bent pipe according to an eighth embodiment of the present invention;
Fig. 18 is a flow chart of steps of a method for manufacturing a bent pipe according to a ninth embodiment of the present invention.
Detailed Description
The invention aims to solve the problems in the prior art, and provides the bent pipe, the manufacturing die and the manufacturing method thereof, and by using the manufacturing die and the manufacturing method, the manufacturing efficiency of manufacturing the bent pipe with the set angle can be improved, and the manufacturing time of manufacturing the bent pipe with the set angle can be saved, so that the bent pipe is more practical.
In order to further describe the technical means and effects adopted by the invention to achieve the preset aim, the following description refers to the specific implementation, structure, characteristics and effects of the bent pipe, the manufacturing mold and the manufacturing method thereof according to the invention in combination with the accompanying drawings and the preferred embodiment. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the described features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
The term "and/or" is herein merely an association relation describing an associated object, meaning that three relations may exist, e.g. a and/or B, specifically understood as: the composition may contain both a and B, and may contain a alone or B alone, and any of the above three cases may be provided.
Elbow pipe
Referring to fig. 1 and 2, the elbow provided by the present invention comprises a multi-segment tube. The multi-section pipes are fixedly connected into a whole through the side wall, and the included angle between the axial directions of the axial first-section pipe and the axial direction of the axial tail-section pipe of the multi-section pipe is a set angle.
In the process of manufacturing the bent pipe by using the manufacturing die and the manufacturing method provided by the invention, only the pipe to be cut is required to be axially accommodated in the manufacturing die of the bent pipe provided by the invention; performing n-1 times of cutting operation according to the number n of sections of the multi-section pipe forming the bent pipe to obtain n sections of pipe; turning the selected section of the n sections of pipes by 180 degrees in an axial mirror image mode through the pipe to be cut to obtain the selected section of pipes after mirror image turning; the selected section pipe and the rest section pipes after mirror image overturning are fixedly butted with the cutting surfaces according to a set sequence to obtain the bent pipe, wherein n is a positive integer greater than 1. In practice, compared with the two-section type bent pipe and the three-section type bent pipe which are commonly used, the manufacturing die and the manufacturing method can improve the manufacturing efficiency of manufacturing the bent pipe, save the manufacturing time of manufacturing the bent pipe, and have low manufacturing cost and die cost.
In addition, the bent pipe provided by the embodiment of the invention is obtained by adopting the self-cutting and then connecting, and the bent neck part of the turn is not required to be additionally manufactured, so that the production cost can be saved, the waste of materials can be avoided, and the production cost is further saved.
Embodiment one: two-section bent pipe
Referring to fig. 1, the two-stage elbow includes a first-stage pipe 9 and a tail-stage pipe 11. The first section pipe 9 and the tail section pipe 11 are fixedly connected into a whole through the side wall, and a first connecting surface 17 is formed between the first section pipe 9 and the tail section pipe 11. The included angle between the axial direction of the first-section pipe 9 and the axial direction of the tail-section pipe 11 is 180 ° -2 α, the included angle between the axial direction of the first-section pipe 9 and the first connecting surface 17 is 90 ° +α, and the included angle between the axial direction of the tail-section pipe 11 and the first connecting surface 17 is 90 ° +α. Wherein alpha is an included angle between the radial direction of the first pipe section 9 and the first connecting surface 17, or an included angle between the radial direction of the tail pipe section 11 and the first connecting surface 17; alpha >0. In the two-section bent pipe manufactured by α=22.5°, the included angle between the axial direction of the first-section pipe 9 and the axial direction of the tail-section pipe 11 is 180 ° -2α=135°, i.e. in the embodiment, the bent pipe with the angle of 135 ° can be obtained.
Embodiment two: three-section bent pipe
Referring to fig. 2, the three-section elbow includes a first section pipe 9, a connecting pipe 10 and a tail section pipe 11, the first section pipe 9, the connecting pipe 10 and the tail section pipe 11 are fixedly connected into a whole sequentially through side walls, a second connecting surface 12 is formed between the first section pipe 9 and the connecting pipe 10, a third connecting surface 13 is formed between the tail section pipe 11 and the connecting pipe 10, an included angle between an axial direction of the first section pipe 9 and an axial direction of the tail section pipe 11 is 180 ° -2 (α+β), an included angle between an axial direction of the first section pipe 9 and the second connecting surface 12 is 90 ° + α, an included angle between the second connecting surface 12 and the third connecting surface 13 is α+β, and an included angle between an axial direction of the tail section pipe 11 and the third connecting surface 13 is 90 ° + β. Wherein alpha is an included angle between the radial direction of the first section pipe 9 and the second connecting surface 12, and beta is an included angle between the radial direction of the tail section pipe 11 and the third connecting surface 13; alpha, beta >0. In this embodiment, α=22.5°, β=22.5°, and the angle between the axial direction of the first-stage pipe 9 and the axial direction of the end-stage pipe 11 is 180 ° -2 (α+β) =90°, that is, in this embodiment, an elbow with a 90 ° angle can be obtained.
In addition, in the two-section bent pipe provided by the first embodiment of the invention and the three-section bent pipe provided by the second embodiment of the invention, the multi-section pipes are fixedly connected into a whole through the side wall in a cementing manner. The pipe material used for forming the multi-section pipe is an organic polymer material under the normal condition, has certain toughness, is reliable to connect through a cementing connection mode, and can also avoid leakage at the connection part, so that the bent pipe has a stable structure and is reliable to connect.
Wherein, the material of multistage pipe is the heat preservation material. In the embodiment, the rubber and plastic heat insulation material is an elastic closed-cell elastic material and has the excellent performances of softness, bending resistance, cold resistance, heat resistance, flame retardance, water resistance, low heat conductivity, shock absorption, sound absorption and the like. Is an ideal material for the bent pipe. Under the condition, the rubber and plastic heat insulation material can be cut by using a common cutter, and at the moment, the multi-section pipes cut by the rubber and plastic heat insulation material can be fixedly connected together in a cementing manner. When the multi-section pipe is made of other materials, such as stainless steel and copper pipe, the pipe sections can be fixedly connected together by welding, threads can be processed on the multi-section pipe, and the pipe sections are connected together by threaded connection and matched with a raw material belt plugging mode. In addition, the sections may be of different materials, so long as they are capable of being joined together to form a bent tube, for example, one of the sections may be of metal and the other section may be of plastic, at which point the joint may be sealed by threading and by corresponding sealing as in the prior art. Particularly, when the multi-section pipe is made of different materials, the bent pipe can be manufactured by using the leftover materials of the pipe, so that the waste utilization can be realized.
Wherein the connecting tube 10 has a transition section 14 on the inside of the turn. In this case, a neck can be formed at the transition section 14, and the problem of excessive impact force formed in the elbow at the turning point due to abrupt change of direction of fluid flowing through the elbow can be avoided, so that the service life of the elbow can be improved.
Manufacturing die for bent pipe
Referring to fig. 3 to 10, the manufacturing mold for the bent pipe provided by the invention comprises a body 1. The body 1 includes first lateral wall 2, bottom surface 3 and second lateral wall 4, first lateral wall 2 is through its bottom surface edge fixed connection in one side edge of bottom surface 3, second lateral wall 4 is through its bottom surface edge fixed connection in the opposite side edge of bottom surface 3 for form the accommodation space between first lateral wall 2, bottom surface 3 and the second lateral wall 4, wherein, be provided with first group vertical slit on the first lateral wall 2, be provided with second group vertical slit on the second lateral wall 4, the contained angle between the radial of the imaginary line between at least one pair of bottom end points of first group vertical slit and the vertical slit of second group and bottom surface 3 is greater than 0.
In the process of manufacturing the bent pipe by using the manufacturing die and the manufacturing method provided by the invention, only the pipe to be cut is required to be axially accommodated in the manufacturing die of the bent pipe provided by the invention; performing n-1 times of cutting operation according to the number n of sections of the multi-section pipe forming the bent pipe to obtain n sections of pipe; turning the selected section of the n sections of pipes by 180 degrees in an axial mirror image mode through the pipe to be cut to obtain the selected section of pipes after mirror image turning; the selected section pipe and the rest section pipes after mirror image overturning are fixedly butted with the cutting surfaces according to a set sequence to obtain the bent pipe, wherein n is a positive integer greater than 1. In practice, compared with the two-section type bent pipe and the three-section type bent pipe which are commonly used, the manufacturing die and the manufacturing method can improve the manufacturing efficiency of manufacturing the bent pipe, save the manufacturing time of manufacturing the bent pipe, and have low manufacturing cost and die cost.
Example III
Referring to fig. 3 and 4, in the mold for manufacturing an elbow according to the third embodiment of the present invention, a first vertical slit 6 is provided on the first sidewall 2. The second side wall 4 is provided with a second vertical slit 5, and an included angle between an imaginary first connecting line between the bottommost end point of the first vertical slit 6 and the bottommost end point of the second vertical slit 5 and the radial direction of the bottom surface 3 is alpha. Wherein α >0. That is, in this case, there is only a pair of vertical slits, which are simple to process.
Example IV
Referring to fig. 5 and 6, in the mold for manufacturing an elbow according to the fourth embodiment of the present invention, a first vertical slit 6 and a third vertical slit 7 are provided on a first side wall 2, and a second vertical slit 5 is provided on a second side wall 4. An angle between an imaginary first connecting line between the bottommost point of the first vertical slit 6 and the bottommost point of the second vertical slit 5 and the radial direction of the bottom surface 3 is alpha, and an angle between an imaginary second connecting line between the bottommost point of the third vertical slit 7 and the bottommost point of the second vertical slit 5 and the radial direction of the bottom surface 3 is beta. Wherein alpha and beta are >0. That is, in this case, two pairs of vertical slits are included, wherein the two pairs of vertical slits share the second vertical slit 5, and when the three-section elbow provided in the second embodiment of the present invention is manufactured by using the two pairs of vertical slits, the operation is simpler and more convenient because the radial overturning operation is not required.
Example five
Referring to fig. 7 and 8, in the mold for manufacturing an elbow according to the fifth embodiment of the present invention, a first vertical slit 6 and a third vertical slit 7 are provided on a first side wall 2, and a second vertical slit 5 and a fifth vertical slit 16 are provided on a second side wall 4. An angle between an imaginary first connecting line between the bottommost point of the first vertical slit 6 and the bottommost point of the second vertical slit 5 and the radial direction of the bottom surface 3 is α, and an angle between an imaginary fourth connecting line between the bottommost point of the third vertical slit 7 and the bottommost point of the fifth vertical slit 16 and the radial direction of the bottom surface 3 is β. Wherein alpha and beta are >0. That is, in this case, including two pairs of vertical slits, when the three-stage bent pipe having a transition section on the turning inner side of the connecting pipe 10 provided in the second embodiment of the present invention is applied to manufacture the same, since it is unnecessary to move the pipe to be cut, the operation is simpler and more convenient, and in this case, the transition section can be made to have a standard size.
Example six
Referring to fig. 9 and 10, the present invention is modified from the third embodiment to the fifth embodiment, and fig. 9 and 10 are modified from the fourth embodiment, and the third embodiment and the fifth embodiment are similar to each other, in which a fourth vertical slit 8 is further provided on the first side wall 2. An imaginary third line between the bottommost end point of the fourth vertical slit 8 and the bottommost end point of the second vertical slit 5 is in the radial direction of the bottom surface 3. In this case, the radial cutting operation of the pipe to be cut can also be performed by using the manufacturing die for the elbow pipe provided in the second embodiment of the present invention, so that the applicability of the cutting die for the elbow pipe provided in the sixth embodiment of the present invention is improved.
In any of the third to sixth embodiments of the present invention, the two free vertexes of the first sidewall 2 and the two free vertexes of the second sidewall 4 are rounded. In this case, the possibility of the operator being scratched can be reduced, and the use safety of the mold for manufacturing the bent pipe can be improved.
Wherein, the interval between the first side wall 2 and the second side wall 4 is equal to the outer diameter of the pipe to be cut. Under the condition, when the pipe to be cut is accommodated in the accommodating space of the cutting die of the bent pipe, the radial clearance between the pipe to be cut and the die can be reduced to the minimum, and the pipe to be cut can be prevented from radial movement when the pipe to be cut is cut, so that the standardization of the included angle between the multi-section pipes obtained by cutting through the manufacturing die can be ensured.
In this case, when the cutting tool just stretches into the vertical slit, the cutting tool is easier to enter the corresponding vertical slit due to the fact that the slit on the upper portion of the vertical slit is larger, and the cutting tool moves downwards along with the cutting tool, so that the cutting edge of the cutting tool can be smoothly guided, the lower the vertical slit is, the narrower the lower the vertical slit is, the cutting line of a pipe to be cut can be easily controlled, and the pipe obtained by cutting is easier to achieve standardization.
Manufacturing method of bent pipe
Referring to fig. 15, the manufacturing method of the bent pipe provided by the invention comprises the following steps:
the pipe to be cut is axially accommodated in the manufacturing mould of the bent pipe provided by the invention;
performing n-1 times of cutting operation according to the number n of sections of the multi-section pipe forming the bent pipe to obtain n sections of pipe;
Turning the selected section of the n sections of pipes by 180 degrees in an axial mirror image mode through the pipe to be cut to obtain the selected section of pipes after mirror image turning;
fixedly butting the selected section pipe subjected to mirror image overturning and the rest section pipe according to a set sequence by using cutting surfaces of the selected section pipe and the rest section pipe to obtain an elbow;
Wherein n is a positive integer greater than 1.
In the process of manufacturing the bent pipe by using the manufacturing die and the manufacturing method provided by the invention, only the pipe to be cut is required to be axially accommodated in the manufacturing die of the bent pipe provided by the invention; performing n-1 times of cutting operation according to the number n of sections of the multi-section pipe forming the bent pipe to obtain n sections of pipe; turning the selected section of the n sections of pipes by 180 degrees in an axial mirror image mode through the pipe to be cut to obtain the selected section of pipes after mirror image turning; the selected section pipe and the rest section pipes after mirror image overturning are fixedly butted with the cutting surfaces according to a set sequence to obtain the bent pipe, wherein n is a positive integer greater than 1. In practice, compared with the two-section type bent pipe and the three-section type bent pipe which are commonly used, the manufacturing die and the manufacturing method can improve the manufacturing efficiency of manufacturing the bent pipe, save the manufacturing time of manufacturing the bent pipe, and have low manufacturing cost and die cost.
Example seven
Referring to fig. 11 and 16, a manufacturing method of the bent pipe provided by the seventh embodiment of the invention includes the following steps:
the pipe to be cut is axially accommodated in a manufacturing die of the bent pipe provided by the third embodiment of the invention;
performing a first cut in the direction of the imaginary first line to obtain a first section of tubing 9 and a tail section of tubing 11;
executing the first mode or the second mode to obtain the two-section bent pipe provided by the first embodiment of the invention, wherein:
the first way is: the first pipe 9 is mirror-turned 180 degrees in the axial direction of the pipe to be cut to obtain a mirror-turned first pipe 9,
Fixing and butt-jointing the cut surface of the mirror-inverted first section pipe 9 to the cut surface of the tail section pipe 11 to obtain the two-section bent pipe provided by the first embodiment of the invention;
The second way is: the tail section pipe 11 is turned 180 degrees by the axial mirror image of the pipe to be cut, the head section pipe 11 with the axial mirror image turned is obtained,
The first tube 11 after the axial mirror image overturning is fixedly connected with the cutting surface of the first tube 9 in a butt joint manner, and the two-section bent tube provided by the first embodiment of the invention is obtained.
The manufacturing method of the bent pipe provided by the seventh embodiment of the invention is simple and convenient to operate and low in cost.
Example eight
Referring to fig. 12 and 17, the manufacturing method of the bent pipe provided by the eighth embodiment of the invention includes the following steps:
the pipe to be cut is axially accommodated in a manufacturing die of the bent pipe provided by the third embodiment of the invention;
performing a first cut in the direction of the imaginary first line to obtain a first section of tubing 9 and a tail section of tubing 11;
Taking any one of the first section pipe 9 or the tail section pipe 11 as a selected pipe, and turning the pipe to be cut by 180 degrees in the radial direction to obtain a selected pipe after turning the pipe in the radial direction;
the selected pipe after radial overturning is axially contained in a manufacturing mould of the bent pipe again;
performing a second cut along the imaginary first line direction to obtain a first length of tubing 9, a connecting tube 10 and a remaining tubing after the selected tubing has cut off the connecting tube 10;
turning the rest pipe 180 degrees in the radial direction of the pipe to be cut to obtain a tail section pipe 11;
Executing the third mode or the fourth mode to obtain the three-section bent pipe provided by the second embodiment of the invention, wherein,
Third mode:
turning the first section of pipe 9 by 180 degrees with the axial mirror image of the pipe to be cut to obtain the first section of pipe 9 after the axial mirror image is turned;
Turning the tail section pipe 11 by 180 degrees in an axial mirror image mode of the pipe to be cut to obtain the tail section pipe 11 after the axial mirror image turning;
The first section pipe 9 after the axial mirror image overturning, the connecting pipe 10 and the tail section pipe 11 after the axial mirror image overturning are fixedly butted with the cutting surfaces of the first section pipe 9 and the connecting pipe in sequence to obtain the three-section bent pipe provided by the second embodiment of the invention;
fourth mode:
turning the connecting pipe 10 by 180 degrees in an axial mirror image mode of the pipe to be cut to obtain a connecting pipe 10 after the axial mirror image turning;
the first pipe 9, the connecting pipe 10 after the axial mirror image overturning and the tail pipe are fixedly butted by the cutting surfaces of the first pipe 9 and the tail pipe in sequence to obtain the three-section bent pipe provided by the second embodiment of the invention, wherein alpha=beta >0.
By applying the manufacturing method of the bent pipe provided by the eighth embodiment of the invention, the manufacturing of the three-section bent pipe provided by the second embodiment of the invention can be completed under the condition that only one pair of vertical slits exist. In addition, even in the case of implementing the mold for manufacturing the bent pipe according to the fourth embodiment of the present invention, the method for manufacturing the bent pipe according to the eighth embodiment of the present invention may be used to manufacture the three-stage bent pipe according to the second embodiment of the present invention.
Example nine
Referring to fig. 13, 14 and 18, a method for manufacturing a bent pipe according to an eighth embodiment of the present invention includes the following steps:
the pipe to be cut is axially accommodated in a manufacturing die of the bent pipe provided by any one of the fourth embodiment to the sixth embodiment of the invention;
performing a first cut in the direction of the imaginary first line;
Performing a second cutting along the direction of the imaginary second line of the fourth embodiment of the present invention or the sixth embodiment of the present invention or the imaginary fourth line of the fifth embodiment of the present invention to obtain a first-stage pipe 9, a connecting pipe 10 and a tail-stage pipe 11;
Executing the third mode or the fourth mode to obtain the three-section bent pipe provided by the second embodiment of the invention, wherein,
Third mode:
turning the first section of pipe 9 by 180 degrees with the axial mirror image of the pipe to be cut to obtain the first section of pipe 9 after the axial mirror image is turned;
Turning the tail section pipe 11 by 180 degrees in an axial mirror image mode of the pipe to be cut to obtain the tail section pipe 11 after the axial mirror image turning;
The first section pipe 9 after the axial mirror image overturning, the connecting pipe 10 and the tail section pipe 11 after the axial mirror image overturning are fixedly butted with the cutting surfaces of the first section pipe 9 and the connecting pipe in sequence to obtain the three-section bent pipe provided by the second embodiment of the invention;
fourth mode:
turning the connecting pipe 10 by 180 degrees in an axial mirror image mode of the pipe to be cut to obtain a connecting pipe 10 after the axial mirror image turning;
The first pipe 9, the connecting pipe 10 after the axial mirror image overturning and the tail pipe are fixedly butted by the cutting surfaces in sequence, so that the three-section bent pipe provided by the second embodiment of the invention is obtained.
When the manufacturing method of the bent pipe provided by the eighth embodiment of the invention is applied, the cutting operation of the three-section bent pipe provided by the second embodiment of the invention can be completed without radial overturning of the coffin to be cut, and the operation is more time-saving, wherein when the manufacturing mold of the bent pipe provided by the fifth embodiment of the invention is selected and the connecting pipe 10 does not need to reserve a transition section, after the first cutting operation is completed, the pipe to be cut can be moved, and after the transition section is eliminated, the second cutting operation is executed.
Wherein a transition section 14 is reserved when forming the connection pipe 10. In this case, a neck can be formed at the transition section 14, and the problem of excessive impact force formed in the elbow at the turning point due to abrupt change of direction of fluid flowing through the elbow can be avoided, so that the service life of the elbow can be improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (13)
1. The manufacturing mould of the bent pipe comprises a plurality of sections of pipes which are fixedly connected into a whole through side walls, wherein the axial included angle between the axial first section pipe and the axial end section pipe of the plurality of sections of pipes is a set angle, the manufacturing mould of the bent pipe is characterized by comprising a body (1),
The body (1) comprises a first side wall (2), a bottom surface (3) and a second side wall (4),
The first side wall (2) is fixedly connected with one side edge of the bottom surface (3) through the bottom surface edge thereof, the second side wall (4) is fixedly connected with the opposite side edge of the bottom surface (3) through the bottom surface edge thereof, so that a containing space is formed among the first side wall (2), the bottom surface (3) and the second side wall (4),
A first group of vertical slits are arranged on the first side wall (2),
A second group of vertical slits are arranged on the second side wall (4),
An included angle between an imaginary connecting line between at least one pair of bottommost end points of the first group of vertical slits and the second group of vertical slits and the radial direction of the bottom surface (3) is larger than 0;
The bent pipe is a three-section bent pipe, which comprises a first section pipe (9), a connecting pipe (10) and a tail section pipe (11),
The head section pipe (9), the connecting pipe (10) and the tail section pipe (11) are fixedly connected into a whole through side walls in sequence, a second connecting surface (12) is formed between the head section pipe (9) and the connecting pipe (10), a third connecting surface (13) is formed between the tail section pipe (11) and the connecting pipe (10), an included angle between the axial direction of the head section pipe (9) and the axial direction of the tail section pipe (11) is 180-2 (alpha+beta),
The included angle between the axial direction of the head section pipe (9) and the second connecting surface (12) is 90 degrees plus alpha,
The included angle between the second connecting surface (12) and the third connecting surface (13) is alpha+beta,
The included angle between the axial direction of the tail section pipe (11) and the third connecting surface (13) is 90 degrees plus beta,
Wherein,
Alpha is the included angle between the radial direction of the head section pipe (9) and the second connecting surface (12),
Beta is the included angle between the radial direction of the tail section pipe (11) and the third connecting surface (13);
α、β>0。
2. The manufacturing mold of the bent pipe according to claim 1, wherein the multi-section pipes are fixedly connected into a whole through side walls in a gluing mode.
3. The mold for manufacturing the bent pipe according to claim 1, wherein the material of the multi-section pipe is a heat-insulating material.
4. The mould for manufacturing elbows according to claim 1, wherein the connecting tube (10) has a transition section (14) inside the turn.
5. The manufacturing mold of the bent pipe according to claim 1, wherein,
A first vertical slit (6) and a third vertical slit (7) are arranged on the first side wall (2), a second vertical slit (5) is arranged on the second side wall (4),
An included angle between an imaginary first connecting line between the bottommost end point of the first vertical slit (6) and the bottommost end point of the second vertical slit (5) and the radial direction of the bottom surface (3) is alpha, and an included angle between an imaginary second connecting line between the bottommost end point of the third vertical slit (7) and the bottommost end point of the second vertical slit (5) and the radial direction of the bottom surface (3) is beta;
Wherein alpha and beta are >0.
6. The manufacturing mold of the bent pipe according to claim 1, wherein,
A first vertical slit (6) and a third vertical slit (7) are arranged on the first side wall (2), a second vertical slit (5) and a fifth vertical slit (16) are arranged on the second side wall (4),
An included angle between an imaginary first connecting line between the bottommost end point of the first vertical slit (6) and the bottommost end point of the second vertical slit (5) and the radial direction of the bottom surface (3) is alpha, and an included angle between an imaginary fourth connecting line between the bottommost end point of the third vertical slit (7) and the bottommost end point of the fifth vertical slit (16) and the radial direction of the bottom surface (3) is beta;
Wherein alpha and beta are >0.
7. Mould for manufacturing elbows according to claim 5 or 6, characterized in that the first side wall (2) is also provided with a fourth vertical slit (8),
An imaginary third line between the bottommost end point of the fourth vertical slit (8) and the bottommost end point of the second vertical slit (5) is in the radial direction of the bottom surface (3).
8. The mould for manufacturing the bent pipe according to claim 1, wherein the two free peaks of the first side wall (2) and the two free peaks of the second side wall (4) are in rounded transition.
9. The mould for manufacturing elbows according to claim 1, characterized in that the spacing between the first side wall (2) and the second side wall (4) is equal to the outer diameter of the pipe to be cut.
10. A method for manufacturing an elbow based on a manufacturing mold for an elbow according to any one of claims 1-9, comprising the steps of:
the pipe to be cut is axially accommodated in a manufacturing die of the bent pipe;
Performing n-1 times of cutting operation according to the number n of the sections of the multi-section pipe forming the bent pipe to obtain n sections of pipes;
Turning over the selected section of the n sections of pipes by 180 degrees in an axial mirror image mode through the pipe to be cut to obtain a selected section of pipe after mirror image turning;
Fixedly butting the selected section of tube after mirror image overturning and the rest section of tube according to a set sequence by using cutting surfaces of the selected section of tube and the rest section of tube to obtain the bent tube;
Wherein n is a positive integer greater than 1.
11. The method of manufacturing an elbow according to claim 10, wherein the method of manufacturing an elbow comprises the steps of:
Axially accommodating a pipe to be cut in the manufacturing die of the bent pipe of any one of claims 7, 8 and 9;
performing a first cut in the direction of the imaginary first line to obtain a first section of tubing (9) and a tail section of tubing (11);
taking any one of the first section pipe (9) or the tail section pipe (11) as a selected pipe, and turning over the pipe to be cut by 180 degrees in the radial direction to obtain a selected pipe after turning over in the radial direction;
The selected pipe after radial overturning is axially contained in the manufacturing mould of the bent pipe of claim 6 again;
performing a second cut along the imaginary first line direction to obtain a first length of tubing (9), a connecting tube (10) and a remaining tubing after the connecting tube (10) has been cut off by the selected tubing;
turning the rest pipe 180 degrees in the radial direction of the pipe to be cut to obtain a tail section pipe (11);
The third mode or the fourth mode is performed to obtain the three-stage elbow according to claim 3, wherein,
Third mode:
Turning the first section pipe (9) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a first section pipe (9) after the axial mirror image is turned;
Turning the tail section pipe (11) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a tail section pipe (11) after the axial mirror image is turned;
The head section pipe (9), the connecting pipe (10) and the tail section pipe (11) after the axial mirror image overturning are fixedly butted with cutting surfaces of the head section pipe, the connecting pipe and the tail section pipe in sequence to obtain the three-section bent pipe of claim 3;
fourth mode:
turning the connecting pipe (10) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a connecting pipe (10) after the axial mirror image is turned;
And (3) fixing and butting the head section pipe (9), the connecting pipe (10) subjected to axial mirror image overturning and the tail section pipe by cutting surfaces of the head section pipe, so as to obtain the three-section bent pipe according to claim 3, wherein alpha=beta >0.
12. The method for manufacturing the bent pipe according to claim 10, wherein the method for manufacturing the bent pipe comprises the following steps:
the pipe to be cut is axially accommodated in a manufacturing die of the bent pipe;
Performing a first cut in the direction of the imaginary first line;
Performing a second cut in the direction of the imaginary second line of claim 8 or the imaginary fourth line of claim 9, resulting in a first section of pipe (9), a connecting pipe (10) and a tail section of pipe (11);
The third mode or the fourth mode is performed to obtain the three-stage elbow according to claim 3, wherein,
Third mode:
Turning the first section pipe (9) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a first section pipe (9) after the axial mirror image is turned;
Turning the tail section pipe (11) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a tail section pipe (11) after the axial mirror image is turned;
The head section pipe (9), the connecting pipe (10) and the tail section pipe (11) after the axial mirror image overturning are fixedly butted with cutting surfaces of the head section pipe, the connecting pipe and the tail section pipe in sequence to obtain the three-section bent pipe of claim 3;
fourth mode:
turning the connecting pipe (10) by 180 degrees through an axial mirror image of the pipe to be cut to obtain a connecting pipe (10) after the axial mirror image is turned;
And (3) fixing and butting the head section pipe (9), the connecting pipe (10) subjected to axial mirror image overturning and the tail section pipe by the cutting surfaces of the head section pipe, so as to obtain the three-section bent pipe of claim 3.
13. The method of manufacturing an elbow according to claim 12, wherein a transition section (14) is reserved when forming the connecting tube (10).
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| CN111271537A (en) | 2020-06-12 |
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