CN212107402U - Bent pipe and manufacturing mold thereof - Google Patents
Bent pipe and manufacturing mold thereof Download PDFInfo
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- CN212107402U CN212107402U CN202020112888.9U CN202020112888U CN212107402U CN 212107402 U CN212107402 U CN 212107402U CN 202020112888 U CN202020112888 U CN 202020112888U CN 212107402 U CN212107402 U CN 212107402U
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- 238000002360 preparation method Methods 0.000 abstract description 27
- 238000005520 cutting process Methods 0.000 description 39
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- 210000001503 joint Anatomy 0.000 description 6
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- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
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- 239000002699 waste material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 239000010949 copper Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Abstract
The application discloses return bend, preparation mould thereof belongs to medium pipe preparation technical field. The elbow 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 head section pipe and the axial tail section pipe of the multi-section pipes is a set angle. In addition, this application still discloses the preparation mould of this return bend. By applying the manufacturing die, 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 is saved.
Description
Technical Field
The utility model relates to a medium pipe preparation technical field especially relates to a return bend, its preparation mould.
Background
In the prior art, a fluid medium is generally conveyed through a metal pipeline, and because the heat conductivity coefficient of metal is large, heat dissipation is fast, under the working condition that heat insulation is needed, in order to ensure the constant temperature of the fluid medium in the conveying process of the metal pipeline, a heat insulation pipe made of a material with a low heat conductivity coefficient is generally needed to insulate the flowing fluid medium, however, under some conditions, when the trend of the fluid pipeline is limited by space, the requirement of conveying space can be better met by turning the heat insulation pipe, but for the material with a low heat conductivity coefficient, especially for rubber and plastic materials, the difficulty in manufacturing the elbow pipe with a turn is large.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a return bend, its preparation mould uses this preparation mould, can improve the preparation efficiency of the return bend of preparation settlement angle, practices thrift the preparation time of the return bend of preparation settlement angle to be suitable for the practicality more.
In order to achieve the first objective, the utility model provides a technical scheme as follows:
the bent pipe provided by the utility model 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 direction of the first section pipe and the axial direction of the tail section pipe of the multi-section pipe is a set angle.
The bent pipe provided by the utility model can be further realized by adopting the following technical measures.
Preferably, the two-section elbow 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 a side wall, a first connecting surface (16) is formed between the head 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 alpha,
the axial direction of the head section pipe (9) and the first connecting surface (16) form an included angle of 90 degrees + alpha,
the included angle between the axial direction of the tail section pipe (11) and the first connecting surface (16) is 90 degrees + alpha,
wherein alpha is an included angle between the radial direction of the first section of pipe (9) and the first connecting surface (16), or an included angle between the radial direction of the tail section of pipe (11) and the first connecting surface (16); alpha > 0.
Preferably, the three-section elbow 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 first-section pipe (9) and the second connecting surface (12) is 90 degrees + 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 + beta,
wherein,
alpha is an included angle between the radial direction of the first section pipe (9) and the second connecting surface (12),
beta is an included angle between the radial direction of the tail section pipe (11) and the third connecting surface (13);
α、β>0。
preferably, the multiple sections of pipes are fixedly connected into a whole through the side walls in a gluing mode.
Preferably, the multi-segment pipe is made of a heat insulation material.
Preferably, the connecting pipe (10) has a transition section (14) on the inside of the bend.
In order to achieve the second objective, the utility model provides a preparation mould technical scheme of return bend as follows:
the utility model provides a manufacturing mould of a bent pipe, 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 an accommodating 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),
and an included angle between an imaginary connecting line between at least one pair of bottom 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 more than 0.
The utility model provides a preparation mould of return bend still can adopt following technical measure to further realize.
As a preference, the first and second liquid crystal compositions are,
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 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;
wherein α > 0.
As a preference, the first and second liquid crystal compositions are,
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 α, β > 0.
As a preference, the first and second liquid crystal compositions are,
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 (17) 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 (17) and the radial direction of the bottom surface (3) is beta;
wherein α, β > 0.
Preferably, the first side wall (2) is further provided with a fourth vertical slit (8),
an imaginary third line between the lowermost point of the fourth vertical slit (8) and the lowermost point of the second vertical slit (5) is in a radial direction of the bottom surface (3).
Preferably, both free vertexes of the first side wall (2) and the second side wall (4) are in fillet 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 the process of manufacturing the bent pipe by using the manufacturing mold provided by the utility model, the pipe to be cut is only required to be axially accommodated in the manufacturing mold of the bent pipe provided by the utility model; 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 a selected section of pipe in the n sections of pipes by 180 degrees in an axial mirror image mode of the pipe to be cut to obtain the selected section of pipe after mirror image turning; with the fixed butt joint of selected section pipe and surplus section pipe after the mirror image upset according to the order of setting for with its cutting plane, obtain the return bend, can obtain the utility model provides a return bend, wherein, n is for being greater than 1 positive integer. In practice, the two-section type bent pipe and the three-section type bent pipe are commonly used, the manufacturing die and the manufacturing method are applied, the manufacturing efficiency of the bent pipe can be improved, the manufacturing time of the bent pipe can be saved, and the manufacturing cost and the die cost are both low.
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 refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural view of a two-stage elbow according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a three-section elbow according to a second embodiment of the present invention;
fig. 3 is a schematic view of a typical three-dimensional structure of a manufacturing mold for a bent pipe according to an embodiment of the present invention;
fig. 4 is a schematic view of a bottom surface and an imaginary first connecting line of a mold for manufacturing a bent pipe according to an embodiment of the present invention;
fig. 5 is a schematic view of a typical three-dimensional structure of a mold for manufacturing a bent pipe according to an embodiment of the present invention;
fig. 6 is a schematic view of a bottom surface of a mold for manufacturing a bent pipe according to an embodiment of the present invention, and a virtual first connection line and a virtual second connection line;
fig. 7 is a schematic view of a typical three-dimensional structure of a mold for manufacturing a bent pipe according to the fifth embodiment of the present invention;
fig. 8 is a schematic view of a bottom surface of a mold for manufacturing a bent pipe according to a fifth embodiment of the present invention, and a virtual first connecting line and a virtual fourth connecting line;
fig. 9 is a schematic perspective view of a typical mold for manufacturing a bent pipe according to a sixth embodiment of the present invention;
fig. 10 is a schematic view of a bottom surface of a mold for manufacturing a bent pipe according to a sixth embodiment of the present invention, and a virtual first line, a virtual second line, and a virtual third line;
fig. 11 is a schematic view illustrating a series of steps for manufacturing a two-stage bent pipe according to a first embodiment of the present invention by using a mold for manufacturing a bent pipe according to any one of the third to sixth embodiments of the present invention;
fig. 12 is a schematic view showing a series of steps for manufacturing a three-stage bent pipe according to a second embodiment of the present invention by using a mold for manufacturing a bent pipe according to a third embodiment of the present invention;
fig. 13 is a schematic view showing a series of steps for manufacturing a three-section type bent pipe according to a second embodiment of the present invention by using a mold for manufacturing a bent pipe according to a fourth embodiment of the present invention, wherein the inner side of the turning of the connecting pipe 10 has no transition section;
fig. 14 is a schematic view showing a series of steps for manufacturing a three-section type bent pipe according to a second embodiment of the present invention by using a mold for manufacturing a bent pipe according to a fourth embodiment of the present invention, wherein an transition section 14 is provided on an inner side of a turn of the connecting pipe 10;
fig. 15 is a flowchart illustrating the general steps of a method for manufacturing a bent pipe according to the present invention;
fig. 16 is a flowchart illustrating steps of a method for manufacturing a bent pipe according to a seventh embodiment of the present invention;
fig. 17 is a flowchart illustrating steps of a method for manufacturing an elbow according to an eighth embodiment of the present invention;
fig. 18 is a flowchart illustrating steps of a method for manufacturing an elbow according to a ninth embodiment of the present invention.
Detailed Description
The utility model discloses a solve the problem that prior art exists, provide a return bend, its preparation mould and manufacturing method, use this preparation mould and manufacturing method, can improve the preparation efficiency of the return bend of preparation settlement angle, practice thrift the preparation time of the return bend of preparation settlement angle to be suitable for the practicality more.
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the present invention, the following detailed description of the elbow, the mold for manufacturing the elbow, and the method for manufacturing the elbow according to the present invention, the detailed embodiments, structures, features, and effects thereof will be made with reference to the accompanying drawings and the preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, with the specific understanding that: both a and B may be included, a may be present alone, or B may be present alone, and any of the three cases can be provided.
Bent pipe
Referring to fig. 1 and 2, the present invention provides an elbow including a multi-segment pipe. The multi-section pipes are fixedly connected into a whole through the side wall, and the included angle between the axial head section pipe and the axial tail section pipe of the multi-section pipes is a set angle.
In the process of manufacturing the bent pipe by applying the manufacturing mold and the manufacturing method provided by the utility model, the pipe to be cut only needs to be axially accommodated in the manufacturing mold of the bent pipe provided by the utility model; 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 a selected section of pipe in the n sections of pipes by 180 degrees in an axial mirror image mode of the pipe to be cut to obtain the selected section of pipe after mirror image turning; with the fixed butt joint of selected section pipe and surplus section pipe after the mirror image upset according to the order of setting for with its cutting plane, obtain the return bend, can obtain the utility model provides a return bend, wherein, n is for being greater than 1 positive integer. In practice, the two-section type bent pipe and the three-section type bent pipe are commonly used, the manufacturing die and the manufacturing method are applied, the manufacturing efficiency of the bent pipe can be improved, the manufacturing time of the bent pipe can be saved, and the manufacturing cost and the die cost are both low.
In addition, the embodiment of the utility model provides an elbow is owing to adopt the reconnection gained after the autogenous cutting, need not to make the curved neck portion of turning in addition, not only can practice thrift manufacturing cost, can also avoid the waste of material, has further practiced thrift manufacturing cost.
The first embodiment is as follows: two-section type bent pipe
Referring to fig. 1, the two-section elbow comprises a first section pipe 9 and a second section pipe 11. The first section pipe 9 and the tail section pipe 11 are fixedly connected into a whole through a side wall, and a first connecting surface 16 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 degrees-2 degrees alpha, the included angle between the axial direction of the first-section pipe 9 and the first connecting surface 16 is 90 degrees + alpha, and the included angle between the axial direction of the tail-section pipe 11 and the first connecting surface 16 is 90 degrees + alpha. Wherein α is an included angle between the radial direction of the first section of tube 9 and the first connection surface 16, or an included angle between the radial direction of the last section of tube 11 and the first connection surface 16; alpha > 0. In the two-stage bent pipe manufactured by the two-stage bent pipe with the angle α of 22.5 ° in this embodiment, the included angle between the axial direction of the first-stage pipe 9 and the axial direction of the last-stage pipe 11 is 180 ° -2 α of 135 °, that is, in this embodiment, a bent pipe with a rotation angle of 135 ° can be obtained.
Example two: three-section type bent pipe
Referring to fig. 2, the three-section elbow includes a first-section pipe 9, a connecting pipe 10 and a last-section pipe 11, the first-section pipe 9, the connecting pipe 10 and the last-section pipe 11 are sequentially and fixedly connected into a whole through a side wall, 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 last-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 last-section pipe 11 is 180 ° -2(α + β), an included angle between the 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 the axial direction of the last-section pipe 11 and the third connecting surface. Wherein, α is an included angle between the radial direction of the first section of tube 9 and the second connecting surface 12, and β is an included angle between the radial direction of the tail section of tube 11 and the third connecting surface 13; α, β > 0. In this embodiment, α is 22.5 °, β is 22.5 °, and an angle between the axial direction of the first tube 9 and the axial direction of the last tube 11 is 180 ° -2(α + β) is 90 °, that is, in this embodiment, a bent tube having a rotation angle of 90 ° can be obtained.
Furthermore, the embodiment of the utility model provides a two-stage form return bend and the utility model provides a two-stage form return bend, adopt the mode fixed connection who splices as an organic whole through the lateral wall between the multistage pipe. The pipe material used for forming the multi-section pipe is made of organic polymer materials under the common condition, has certain toughness, is not only reliably connected in a splicing connection mode, but also can avoid leakage at the joint, so that the bent pipe is stable in structure and reliable in connection.
Wherein, the material of multistage pipe is the heat preservation material. In this embodiment, the rubber-plastic thermal insulation material is an elastic closed-cell elastic material, and has excellent properties of softness, winding 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 elbow. Under the condition, the cutting of the rubber and plastic heat-insulating material can be realized by applying a common cutter, and at the moment, the multiple sections of pipes obtained by cutting the rubber and plastic heat-insulating material can be fixedly connected together in a gluing mode. When the multistage pipe is other materials, for example stainless steel, copper pipe, can also adopt welded fastening to link together between each section pipe, can also process the screw thread on the multistage pipe of gained, link together through threaded connection and the mode of being equipped with the raw material area leaking stoppage. In addition, the multi-section pipes can be made of different materials, as long as the multi-section pipes can be connected together to form a bent pipe, for example, one of the sections can be made of metal, the other section can be made of plastic, and at the moment, the connection part can be sealed in a corresponding sealing mode in the prior art through threads in a threaded mode. Especially when the multi-section pipe is made of different materials, the bent pipe can be manufactured by using the leftover materials of the pipe, and waste utilization can be realized.
The connecting pipe 10 has a transition section 14 on the inside of the bend. In this case, a bent neck can be formed at the transition section 14, and the problem of excessive impact force formed at the bent portion in the bent pipe due to the sudden change of direction of the fluid flowing through the bent pipe can be avoided, so that the service life of the bent pipe can be prolonged.
Manufacturing die for bent pipe
Referring to fig. 3 to 10, the present invention provides a mold for manufacturing a bent pipe, which includes a body 1. The body 1 comprises a first side wall 2, a bottom surface 3 and a second side wall 4, wherein the first side wall 2 is fixedly connected with one side edge of the bottom surface 3 through the bottom surface edge of the first side wall 2, the second side wall 4 is fixedly connected with the opposite side edge of the bottom surface 3 through the bottom surface edge of the second side wall 4, so that an accommodating 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, and an included angle between an imaginary connecting line between at least one pair of bottom-most points of the first group of vertical slits and the second group of vertical slits and the.
In the process of manufacturing the bent pipe by applying the manufacturing mold and the manufacturing method provided by the utility model, the pipe to be cut only needs to be axially accommodated in the manufacturing mold of the bent pipe provided by the utility model; 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 a selected section of pipe in the n sections of pipes by 180 degrees in an axial mirror image mode of the pipe to be cut to obtain the selected section of pipe after mirror image turning; with the fixed butt joint of selected section pipe and surplus section pipe after the mirror image upset according to the order of setting for with its cutting plane, obtain the return bend, can obtain the utility model provides a return bend, wherein, n is for being greater than 1 positive integer. In practice, the two-section type bent pipe and the three-section type bent pipe are commonly used, the manufacturing die and the manufacturing method are applied, the manufacturing efficiency of the bent pipe can be improved, the manufacturing time of the bent pipe can be saved, and the manufacturing cost and the die cost are both low.
EXAMPLE III
Referring to fig. 3 and 4, in the mold for manufacturing the bent pipe according to the third embodiment of the present invention, the first sidewall 2 is provided with a first vertical slit 6. 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 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. Wherein α > 0. That is, in this case, there is only one pair of vertical slits, and the processing thereof is simple.
Example four
Referring to fig. 5 and 6, in the manufacturing mold for manufacturing the elbow according to the fourth embodiment of the present invention, the first side wall 2 is provided with the first vertical slit 6 and the third vertical slit 7, and the second side wall 4 is provided with the second vertical slit 5. An angle between an imaginary first connecting line between the lowermost end point of the first vertical slit 6 and the lowermost end point of the second vertical slit 5 and the radial direction of the bottom surface 3 is α, and an angle between an imaginary second connecting line between the lowermost end point of the third vertical slit 7 and the lowermost end point of the second vertical slit 5 and the radial direction of the bottom surface 3 is β. Wherein α, β > 0. That is to say, under this condition, including two pairs of vertical slits, wherein, two pairs of vertical slits sharing second vertical slit 5 is using its preparation the utility model discloses during the syllogic return bend that embodiment two provided, owing to need not to carry out radial upset operation, it is more simple and convenient to operate.
EXAMPLE five
Referring to fig. 7 and 8, in the manufacturing mold for manufacturing the bent pipe according to the fifth embodiment of the present invention, the first side wall 2 is provided with the first vertical slit 6 and the third vertical slit 7, and the second side wall 4 is provided with the second vertical slit 5 and the fifth vertical slit 17. An angle between an imaginary first connecting line between the lowermost end point of the first vertical slit 6 and the lowermost end 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 lowermost end point of the third vertical slit 7 and the lowermost end point of the fifth vertical slit 17 and the radial direction of the bottom surface 3 is β. Wherein α, β > 0. That is to say, under this condition, including two pairs of vertical slits, using its preparation the utility model discloses when the connecting pipe 10 that embodiment two provided turns the syllogic return bend that the inboard has the changeover portion, owing to need not to move and wait to cut tubular product, it is more simple and convenient to operate to, under this condition, can make the changeover portion realize standard size.
EXAMPLE six
Referring to fig. 9 and 10, the third embodiment to the fifth embodiment of the present invention is modified, and fig. 9 and 10 are obtained by modifying the fourth embodiment, and similarly to the third embodiment and the fifth embodiment, a fourth vertical slit 8 is further provided on the first side wall 2. An imaginary third line between the lowermost point of the fourth vertical slit 8 and the lowermost point of the second vertical slit 5 is in the radial direction of the bottom surface 3. Under the condition, can also utilize the utility model discloses the preparation mould of the return bend that embodiment two provided carries out the radial cutting operation to waiting to cut tubular product, consequently, has improved the utility model discloses the suitability of the cutting die of the return bend that embodiment six provided.
In addition, in any of the third embodiment of the present invention, the two free vertexes of the first side wall 2 and the second side wall 4 are all rounded. In this case, the possibility of operator's scratches can be reduced, and the safety of use of the mold for producing the bent pipe can be improved.
Wherein, the interval between first lateral wall 2 and the second lateral wall 4 equals with the external diameter of waiting to cut tubular product. Under the condition, when the pipe to be cut is accommodated in the accommodating space of the cutting die of the elbow, the radial gap 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 generating radial movement when the action of cutting the pipe to be cut is executed, so that the standardization of included angles among the multiple sections of pipes obtained by cutting through the manufacturing die can be ensured.
Wherein, above-mentioned each vertical slit can also make into from the top down, the mode that the gap progressively diminishes gradually, under this condition, when cutting tool just stretched into vertical slit, because vertical slit upper portion gap is great, cutting tool enters into corresponding vertical slit more easily, along with cutting tool moves down, in order to make cutting tool's cutting edge can be led to smoothly, vertical slit is more narrow downwards, can make the cutting line to waiting to cut tubular product be controlled easily, make the cutting gained tubular product realize standardizedly more easily.
Manufacturing method of bent pipe
Referring to fig. 15, the manufacturing method of the bent pipe provided by the present invention includes the following steps:
the pipe to be cut is axially accommodated in the manufacturing die of the bent pipe provided by the utility model;
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 a selected section of pipe in the n sections of pipes by 180 degrees in an axial mirror image mode of the pipe to be cut to obtain the selected section of pipe after mirror image turning;
fixedly butting the selected section of pipe and the rest section of pipe after mirror image turning by the cutting surfaces of the selected section of pipe and the rest section of pipe according to a set sequence to obtain a bent pipe;
wherein n is a positive integer greater than 1.
In the process of manufacturing the bent pipe by applying the manufacturing mold and the manufacturing method provided by the utility model, the pipe to be cut only needs to be axially accommodated in the manufacturing mold of the bent pipe provided by the utility model; 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 a selected section of pipe in the n sections of pipes by 180 degrees in an axial mirror image mode of the pipe to be cut to obtain the selected section of pipe after mirror image turning; with the fixed butt joint of selected section pipe and surplus section pipe after the mirror image upset according to the order of setting for with its cutting plane, obtain the return bend, can obtain the utility model provides a return bend, wherein, n is for being greater than 1 positive integer. In practice, the two-section type bent pipe and the three-section type bent pipe are commonly used, the manufacturing die and the manufacturing method are applied, the manufacturing efficiency of the bent pipe can be improved, the manufacturing time of the bent pipe can be saved, and the manufacturing cost and the die cost are both low.
EXAMPLE seven
Referring to fig. 11 and 16, a method for manufacturing a bent pipe according to a seventh embodiment of the present invention includes the following steps:
the pipe to be cut is axially accommodated in the manufacturing die of the bent pipe provided by the third embodiment of the utility model;
performing a first cut in the direction of the imaginary first line to obtain a first section of pipe 9 and a last section of pipe 11;
carry out first mode or second mode, obtain the utility model provides a two-stage type return bend, wherein:
the first mode is as follows: the first section of pipe 9 is turned over by 180 degrees in the axial mirror image of the pipe to be cut to obtain the first section of pipe 9 after mirror image turning,
fixedly butting the first section of pipe 9 after the mirror image is turned over to the cutting surface of the tail section of pipe 11 by the cutting surface to obtain the two-section type bent pipe provided by the first embodiment of the utility model;
the second mode is as follows: the tail section pipe 11 is turned over by 180 degrees according to the axial mirror image of the pipe to be cut to obtain the head section pipe and the tail section pipe 11 after the axial mirror image turning,
Use the utility model discloses the manufacturing method of return bend that embodiment seven provided, easy and simple to handle, low cost.
Example eight
Referring to fig. 12 and 17, an eighth embodiment of the present invention provides a method for manufacturing a bent pipe, including the following steps:
the pipe to be cut is axially accommodated in the manufacturing die of the bent pipe provided by the third embodiment of the utility model;
performing a first cut in the direction of the imaginary first line to obtain a first section of pipe 9 and a last section of pipe 11;
taking any one of the first section of pipe 9 or the tail section of pipe 11 as a selected pipe, and turning the pipe to be cut radially by 180 degrees to obtain the selected pipe after radial turning;
the selected pipe after the radial turning is accommodated in the manufacturing mould of the bent pipe along the axial direction again;
performing second cutting along the imaginary first line direction to obtain a first section of pipe 9, a connecting pipe 10 and a residual pipe of the selected pipe after cutting off the connecting pipe 10;
turning the rest pipes 180 degrees in the radial direction of the pipe to be cut to obtain tail section pipes 11;
the third way or the fourth way is executed to obtain the three-section type bent pipe provided by the second embodiment of the present invention, wherein,
the third mode is as follows:
turning the first section of pipe 9 by 180 degrees in an axial mirror image of the pipe to be cut to obtain the first section of pipe 9 after turning the axial mirror image;
turning the tail section pipe 11 by 180 degrees in an axial mirror image of the pipe to be cut to obtain the tail section pipe 11 after turning the axial mirror image;
fixedly butting the first section of pipe 9, the connecting pipe 10 and the tail section of pipe 11 after the axial mirror image turning with the cutting surfaces thereof in sequence to obtain the three-section bent pipe provided by the second embodiment of the utility model;
the fourth mode is that:
turning the connecting pipe 10 by 180 degrees in an axial mirror image of the pipe to be cut to obtain the connecting pipe 10 after turning the axial mirror image;
with connecting pipe 10, the tail-end pipe after first section pipe 9, the upset of axial mirror image in proper order with the fixed butt joint of its cutting plane, obtain the utility model provides a two syllogic return bends provide, wherein, alpha ═ beta > 0.
Use the embodiment of the utility model provides an eight manufacturing methods of the return bend that provide can accomplish under the condition that only has a pair of vertical slit the embodiment two provides the manufacturing of syllogic return bend. Furthermore, even if the utility model discloses implement four under the circumstances of the preparation mould of the return bend that the embodiment six provided, still can adopt the utility model discloses the preparation method of the eight return bends that provide realizes the embodiment two of the utility model provides a preparation of syllogic return bend.
Example nine
Referring to fig. 13, 14 and 18, an eighth embodiment of the present invention provides a method for manufacturing a bent pipe, including the following steps:
the pipe to be cut is axially accommodated in the manufacturing mold of the bent pipe provided in 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 imaginary second line of the fourth embodiment of the present invention or the imaginary fourth line of the sixth embodiment of the present invention or the direction of the imaginary fourth line of the fifth embodiment of the present invention to obtain a first section pipe 9, a connecting pipe 10 and a tail section pipe 11;
the third way or the fourth way is executed to obtain the three-section type bent pipe provided by the second embodiment of the present invention, wherein,
the third mode is as follows:
turning the first section of pipe 9 by 180 degrees in an axial mirror image of the pipe to be cut to obtain the first section of pipe 9 after turning the axial mirror image;
turning the tail section pipe 11 by 180 degrees in an axial mirror image of the pipe to be cut to obtain the tail section pipe 11 after turning the axial mirror image;
fixedly butting the first section of pipe 9, the connecting pipe 10 and the tail section of pipe 11 after the axial mirror image turning with the cutting surfaces thereof in sequence to obtain the three-section bent pipe provided by the second embodiment of the utility model;
the fourth mode is that:
turning the connecting pipe 10 by 180 degrees in an axial mirror image of the pipe to be cut to obtain the connecting pipe 10 after turning the axial mirror image;
connecting pipe 10, the tail-end pipe after turning over first section pipe 9, axial mirror image are in proper order with the fixed butt joint of its cutting plane, obtain the embodiment two of the utility model provides a syllogic return bend that provides.
Use the utility model discloses during the preparation method of the elbow pipe that the embodiment eight provided, can accomplish under the condition that need not to wait to cut the coffin and carry out radial upset the utility model discloses the cutting operation of the syllogic elbow pipe that embodiment two provided, the operation is more time-saving, wherein, when selecting the use the utility model discloses the preparation mould of the elbow pipe that embodiment five provides, and when connecting pipe 10 need not to reserve the changeover portion again, after accomplishing first cutting operation, can wait to cut tubular product through removing, eliminate behind its changeover portion, carry out the second time cutting operation again.
In which a transition section 14 is reserved when forming the connecting tube 10. In this case, a bent neck can be formed at the transition section 14, and the problem of excessive impact force formed at the bent portion in the bent pipe due to the sudden change of direction of the fluid flowing through the bent pipe can be avoided, so that the service life of the bent pipe can be prolonged.
While the 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 appended claims be interpreted as including the preferred embodiment 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 changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (13)
1. A bent pipe is characterized by comprising 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 direction of the first section pipe and the axial direction of the tail section pipe of the multi-section pipe is a set angle.
2. An elbow according to claim 1, characterised in that the two-stage elbow comprises a head stage pipe (9), a tail stage pipe (11),
the head section pipe (9) and the tail section pipe (11) are fixedly connected into a whole through a side wall, a first connecting surface (16) is formed between the head 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 alpha,
the axial direction of the head section pipe (9) and the first connecting surface (16) form an included angle of 90 degrees + alpha,
the included angle between the axial direction of the tail section pipe (11) and the first connecting surface (16) is 90 degrees + alpha,
wherein alpha is an included angle between the radial direction of the first section of pipe (9) and the first connecting surface (16), or an included angle between the radial direction of the tail section of pipe (11) and the first connecting surface (16); alpha > 0.
3. A bend according to claim 1, characterised in that the three-stage bend comprises a head stage tube (9), a connecting tube (10) and a tail stage tube (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 first-section pipe (9) and the second connecting surface (12) is 90 degrees + 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 + beta,
wherein,
alpha is an included angle between the radial direction of the first section pipe (9) and the second connecting surface (12),
beta is an included angle between the radial direction of the tail section pipe (11) and the third connecting surface (13);
α、β>0。
4. the elbow according to claim 1, wherein the sections are fixedly connected together by gluing the sidewalls.
5. The elbow according to claim 1, wherein the multi-segment tube is made of a heat insulating material.
6. An elbow according to claim 3, characterised in that the connecting tube (10) has a transition (14) on the inside of the turn.
7. A mold for manufacturing a bent pipe according to any one of claims 1 to 6, 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 an accommodating 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),
and an included angle between an imaginary connecting line between at least one pair of bottom 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 more than 0.
8. The mold for manufacturing an elbow pipe according to claim 7,
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 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;
wherein α > 0.
9. The mold for manufacturing an elbow pipe according to claim 7,
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 α, β > 0.
10. The mold for manufacturing an elbow pipe according to claim 7,
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 (17) 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 (17) and the radial direction of the bottom surface (3) is beta;
wherein α, β > 0.
11. Mould for producing bent tubes according to any one of claims 8-10, characterised in that said first side wall (2) is provided with a fourth vertical slit (8),
an imaginary third line between the lowermost point of the fourth vertical slit (8) and the lowermost point of the second vertical slit (5) is in a radial direction of the bottom surface (3).
12. Mould for manufacturing bent pipes according to claim 7, characterized in that the two free vertices of the first side wall (2) and the two free vertices of the second side wall (4) are rounded.
13. Mould for making elbows according to claim 7, wherein the spacing between the first (2) and second (4) lateral walls is equal to the external diameter of the pipe to be cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020112888.9U CN212107402U (en) | 2020-01-17 | 2020-01-17 | Bent pipe and manufacturing mold thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020112888.9U CN212107402U (en) | 2020-01-17 | 2020-01-17 | Bent pipe and manufacturing mold thereof |
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| CN212107402U true CN212107402U (en) | 2020-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271537A (en) * | 2020-01-17 | 2020-06-12 | 北京瑞尔腾普科技有限公司 | Bent pipe, manufacturing mold and manufacturing method thereof |
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2020
- 2020-01-17 CN CN202020112888.9U patent/CN212107402U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271537A (en) * | 2020-01-17 | 2020-06-12 | 北京瑞尔腾普科技有限公司 | Bent pipe, manufacturing mold and manufacturing method thereof |
| CN111271537B (en) * | 2020-01-17 | 2024-06-04 | 北京瑞尔腾普科技有限公司 | Bent pipe, manufacturing die and manufacturing method thereof |
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Effective date of registration: 20220623 Address after: Room 215, building 2, No. 4, Renhe Road, science and Technology Park, Changping District, Beijing 102200 Patentee after: Beijing ruiertenpu Equipment Technology Co.,Ltd. Address before: 100000 room 710, unit 1, floor 7, building 4, Baijiatuan Shangshui Park, Haidian District, Beijing Patentee before: BEIJING REAL-TEMP TECHNOLOGY Co.,Ltd. |
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