CN207735387U - A kind of small bend radius tube differential temperature pushes away the device of o ing - Google Patents
A kind of small bend radius tube differential temperature pushes away the device of o ing Download PDFInfo
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- CN207735387U CN207735387U CN201820102117.4U CN201820102117U CN207735387U CN 207735387 U CN207735387 U CN 207735387U CN 201820102117 U CN201820102117 U CN 201820102117U CN 207735387 U CN207735387 U CN 207735387U
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- bending
- ing
- forming
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- away
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Abstract
The utility model discloses the device that a kind of small bend radius tube differential temperature pushes away o ing,Including pushing away bending mould,Core print,It filler and cuts somebody's hair,Core print and filler are arranged at the forming intracavitary for pushing away bending mould,The entrance and exit end for pushing away bending mould is respectively arranged with preceding guide sleeve and rear guide sleeve,If cutting somebody's hair in preceding guide sleeve offsets with filler stem,Cutting somebody's hair in guide sleeve offsets with core print afterwards,Push away one end setting heating rod on the outside of the bending forming forming cavity of bending mould,One end of bending forming forming intracavitary side is provided with bosh,The utility model pushes away o ing using thermal type,Improve mobile performance of the pipe on the outside of the mold at fillet and carries out feed supplement in time,It prevents from small bend radius tube from pushing away the excessive drawing crack of material outside in o ing to be thinned,Pipe curved interior is under cooling water effect,Certain deformation intensity is generated in forming,And then resist the compression being subject at fillet on the inside of pipe in forming process,The defects of preventing stacking and the corrugation of the generation on the inside of pipe forming fillet.
Description
Technical field
The utility model is related to tubing to push away o ing technical field, be pushed away more particularly to a kind of small bend radius tube differential temperature curved
The device of forming.
Background technology
In modern Aviation, space flight, auto industry etc., in order to achieve the purpose that mitigate weight and save the useful space, largely
Using global formation small-bend radius pipe fitting.When tubing small-bend radius is bent, Tensile on the outside of fillet area, inside is by crowded
Pressure, as shown in Figure 1, inner circle radius r is smaller, the deformation of fillet area is bigger, and tubing inside material is easy accumulation corrugation, outside material
Material is stretched stress and occurs to be thinned even rupture, so other existing bending pipes modes, which are difficult bending, is less than or equal to 1
Times relative bending radius pipe fitting.
It is a kind of bending method shaped internal in the pipe push-in bending mould equipped with filler material that tubing, which pushes away o ing,
It is commonly used to 90 ° of pipe bends that forming relative bending radius R is equal to 1 times of caliber D (R≤D).
But it is all made of constant temperature under room temperature at present and pushes away curved, pushes away o ing performance to improve, push away and curved be less than 1 times of bending radius pipe
Material, the utility model proposes the method and devices that a kind of small bend radius tube differential temperature pushes away o ing, have important engineering significance.
Utility model content
The purpose of this utility model is to provide the device that a kind of small bend radius tube differential temperature pushes away o ing, is pushed away using thermal type
O ing is shaped on the outside of cavity and on the inside of cooling water cooling die forming cavity by heating rod heating mould, it is poor to form mold
Temperature and then the performance for improving the pipe different parts in forming process.
To achieve the above object, the utility model provides following technical solution：
The utility model provides a kind of small bend radius tube differential temperature and pushes away the device of o ing, including push away bending mould, core print,
It filler and cuts somebody's hair, the core print and filler are arranged at the forming intracavitary for pushing away bending mould, the entrance for pushing away bending mould
It is provided with preceding guide sleeve, the outlet end for pushing away bending mould is provided with rear guide sleeve, the bending forming cavity outside for pushing away bending mould
One end be provided with heating rod, one end on the inside of the bending forming cavity for pushing away bending mould is provided with bosh, it is described plus
It is provided with the first thermocouple around hot pin, is provided with the second thermocouple around the bosh, in the preceding guide sleeve
It offsets with filler stem if cutting somebody's hair, cutting somebody's hair in the rear guide sleeve offsets with core print.
Preferably, the heating rod is arranged in the external arc side of the bending forming cavity, the vertical institute of the heating rod
The tangent line of the external arc of bending forming cavity is stated, the heating rod is at least arranged one；
Preferably, the bosh is arranged in the Inner arc side of the bending forming cavity, the bosh
Cooling section is distributed along the Inner arc of the bending forming cavity；
Preferably, the filler is the rubber cylinder block that hardness is 80~85A shore hardnesses, the thickness of the rubber cylinder block
Degree is 7~10mm, and the rubber uses fluorubber or perfluoroelastomers；
Preferably, the core print is uniformly distributed bending in type hole, and the core print is at least provided with 3.
The utility model achieves following technique effect in terms of existing technologies：
1, the utility model pushes away o ing using thermal type, by the way that heating is arranged in the both sides for pushing away bight portion for pushing away bending mould
Stick and bosh first heat mold, are then cooled down to mold, change existing room temperature and push away and curve picture so that on the outside of mold
Temperature increase so that pipe on the outside of in formation be in higher forming temperature to have good plasticity, improve pipe exist
Mobile performance on the outside of mold at fillet simultaneously carries out feed supplement in time, prevents small bend radius tube from pushing away material outside in o ing excessive
Drawing crack be thinned, avoid rupture the defects of generation.
2, pushing away for the utility model makes pipe generate certain change in formation on the inside of bending mould by the cooling temperature that reduces
Shape intensity, and then the compression being subject at fillet on the inside of pipe in forming process is resisted, it prevents on the inside of pipe forming fillet
The defects of stacking of generation and corrugation.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without having to pay creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is that the utility model embodiment is the schematic device that small bend radius tube differential temperature pushes away o ing；
Fig. 2 is that the utility model embodiment is that small bend radius tube differential temperature pushes away schematic diagram during o ing；
Fig. 3 is that the utility model embodiment is that small bend radius tube differential temperature pushes away the tubing after o ing.
Wherein, 1- heating rods, 2- core prints, 3- push away after bending mould, 4- guide sleeve before guide sleeve, 5- boshes, 6- pipes, 7-,
8- fillers, 9- cut somebody's hair, the first thermocouples of 10-, the second thermocouples of 11-.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The purpose of this utility model is to provide the method and device that a kind of small bend radius tube differential temperature pushes away o ing, using temperature
Differential pushes away o ing, is shaped on the outside of cavity and on the inside of cooling water cooling die forming cavity, is formed by heating rod heating mould
Mold differential temperature and then the performance for improving the pipe different parts in forming process.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, below in conjunction with the accompanying drawings and have
Body embodiment is described in further detail the utility model.
As shown in Figure 1, present embodiments providing a kind of small bend radius tube differential temperature pushes away the device of o ing, including push away curved mould
Tool 3, core print 2, filler 8 and cut somebody's hair 9, core print 2 and filler 8 are arranged at the forming intracavitary for pushing away bending mould 3, push away bending mould 3
Entrance and exit end is respectively arranged with preceding guide sleeve 7 and rear guide sleeve 4, and one end on the outside of the bending forming cavity for pushing away bending mould 3 is set
It is equipped with heating rod 1, one end on the inside of the bending forming cavity of bending mould 3 is pushed away and is provided with bosh 5, set around heating rod 1
It is equipped with the first thermocouple 10, the second thermocouple 11 is provided with around bosh 5, if cut somebody's hair 9 and filler stem in preceding guide sleeve 7
8 offset, and cutting somebody's hair in rear guide sleeve 49 offsets with core print 2, and core print 2 is uniformly distributed bending in type hole, the core print 2 of the present embodiment
3 are provided with, core print 2 can ensure that pipe 6 is pushing away the defects of wrinkling in o ing process middle pipe.
Specifically, inside and outside the bending forming part for pushing away bending mould 3 is divided into, inside is pressed end, and outside is to stretch end,
Pipe 6 carries out pushing away in shaping cavity o ing, and forming cavity is divided into Inner arc and external arc in the part of bending, here interior
The pressed end of circular arc and inside is in the same side, and in the same side, heating rod 1 is arranged in bending forming at the stretching end in external arc and outside
The external arc side of cavity, 1 vertical curve of heating rod shape the tangent line of the external arc of cavity, and the heating rod 1 of the present embodiment is arranged
There are 6, and be evenly distributed on and push away between 3 outer side stretching end of bending mould and external arc, the first above-mentioned thermocouple 10 is just arranged
Between this 6 heating rods 1, the first thermocouple 10 is used to detect external arc and stretches the temperature between end；Second thermocouple 11
It is then the temperature detected around bosh 5, bosh 5 is arranged in the Inner arc side of bending forming cavity, bosh 5
Cooling section be distributed along the Inner arc of bending forming cavity, cooling section here is distributed using cooling tube to be cooled down, the second heat
Galvanic couple 11 is arranged between cooling tube, and detection pushes away temperature of the bending mould 3 around cooling tube, the first thermocouple 10 and the second thermoelectricity
Even 11 detections simultaneously push away the temperature of 3 both sides of bending mould and calculate the temperature difference of both sides, determine whether to carry out pipe 6 according to the temperature difference
Push away o ing.The present embodiment makes pipe 6 generate the hardening of some strength in formation by the cooling temperature that reduces, and then supports
The compression being subject at 6 inside fillet of pipe in anti-forming process, prevent pipe 6 shape fillet on the inside of locate generation stacking with
The defects of corrugation.
It is above-mentioned to push away whether curved work carries out about pipe 6, it needs according to the temperature difference for pushing away bending mould 3 in bending forming end both sides
It determines, the temperature difference here selects the different temperature difference to be pushed away using 100~300 DEG C, according to the difference of 6 material of pipe
O ing, for example, pipe 6 material be aluminium alloy when, push away when 3 temperature difference of bending mould reaches 100 DEG C and can be carried out aluminium alloy
The curved processing that pushes away of pipe pushes away when 3 temperature difference of bending mould reaches 300 DEG C when the material of pipe 6 is high temperature alloy and can be carried out high temperature
Alloy pipe stock pushes away curved processing, the temperature that the present embodiment pushes away 3 outside of bending mould increase so that 6 outside of pipe be in formation compared with
High forming temperature improves mobile performance of the pipe 6 on the outside of the mold at fillet and carries out in time to have good plasticity
Feed supplement prevents small bend radius tube from pushing away the generation for the defects of excessive drawing crack of material outside in o ing is thinned, avoids rupture.
The filler 8 of the present embodiment uses hardness for the rubber cylinder block of 80~85A shore hardnesses, the thickness of rubber cylinder block
For 7~10mm, rubber uses fluorubber or perfluoroelastomers, is controlled using the temperature difference due to pushing away bending mould 3, filler 8 uses
Heat safe rubber, 8 material of filler that the present embodiment specifically uses is fluorubber or perfluoroelastomers, and wherein fluorubber is 250
DEG C or less can be used for a long time, and perfluoroelastomers can be used for a long time at 300 DEG C or less, and above two rubber meets at this
It is used as filler 8 in utility model.
The present embodiment additionally provides the course of work that a kind of small bend radius tube differential temperature pushes away o ing, using above-mentioned apparatus,
Specifically include following steps：
Step 1：The blanking of pipe 6 and corner cut；
Lower length is the blank of m, and length m is significantly larger than π D.By the head of 6 curved interior of pipe of long m cut 30 °~
45 °~60 ° oblique angles are cut in the tail portion of the curved interior of 45 ° of oblique angles, pipe 6 and 9 contacts of cutting somebody's hair, and pipe 6 is then pushed away end inclined-plane
It cuts flat with along 6 midline position of pipe, finally by 6 both ends deburring processing of pipe, and outside in pipe 6 is cleaned up；
Step 2：6 external spray lubricant of pipe；
Lubricant is smeared on pipe 6, the lubricant is fire-resistant lubricants, the fire-resistant lubricants in the present embodiment
For boron nitride coating；
Step 3：Filled rubber filler 8 in pipe 6；
It is pushed away in pipe 6 and fills the gum filler 8 that a number of hardness is 80~85A shore hardnesses, rubber inside end
Filler 8 is rubber cylinder block, and each rubber cylinder block diameter is smaller 2mm than the internal diameter of pipe 6, is adopted according to the forming temperature of pipe 6
With fluorubber cylindrical piece or perfluoroelastomers cylindrical piece.
Step 4：1 electrified regulation of heating rod pushes away bending mould 3；
Heating rod 1 is powered, and heating rod 1, which heats, to be pushed away bending mould 3 to set temperature and keep the temperature after heating constant, setting
Temperature is 200~400 DEG C, and the temperature after heating changes up and down less than 2 DEG C；6 deformation temperature of pipe improves so that forming process
The plasticity of middle outboard tube material tissue improves；Since 6 deformation temperature of pipe improves so that outboard tube base 6 is organized in forming process
Plasticity improves, and promotes material flowing and timely feed supplement of the pipe 6 in pushing away 3 outside forming process of bending mould, prevents outside pipe 6
The generation for the defects of being thinned by tensile stress in forming process, avoiding rupture；
Step 5：5 water flowing of bosh cooling pushes away bending mould 3；
Cooling water injection is pushed away into the bosh 5 opened up in bending mould 3, die inside is taken away by the flowing of cooling water
The initial coolant-temperature gage of heat and then the temperature for reducing die inside, cooling water is room temperature；Taken away by the flowing of cooling water push away it is curved
The heat of the inside of mold 3 and then the temperature for reducing die inside promote what the intensity of material and then resist was subject in forming process
Compression prevents material from stacking and wrinkling；
Step 6：Pipe 6 pushes away o ing；
As shown in Fig. 2, selecting the different temperature difference according to the difference of 6 material of pipe to carry out pushing away o ing, when the first thermoelectricity
Even 10 and second thermocouple 11 detect after the temperature difference for pushing away inside and outside bending mould 3 is 100~300 DEG C, pipe 6 is put into and pushes away curved mould
In tool 3, guarantee, which is cut somebody's hair, 9 is in that initial position is fixed with core print 2, and then the thrust at the top of augmented core print 2, passes through filler 8
Enough internal pressure in pipe is provided, forcing material, groove largely flows forward, and pipe 6 is forward at the uniform velocity under the action of cutting somebody's hair 9 thrust
Mobile, while core print 2 moves backward, 9 displacement distance of cutting somebody's hair is π D, is gradually completed in this way to 6 small bend radius tube of pipe
Forming；
Step 7：Remove surface lubricant；
As shown in figure 3, after to be formed, the lubricant of 6 piece surface of pipe, the final small bending for obtaining forming are removed
Radius pipe.
The utility model pushes away o ing using thermal type, by the way that heating is arranged in the both sides for pushing away bight portion for pushing away bending mould 3
Stick 1 and bosh 5 first heat mold, are then cooled down to mold, change existing room temperature and push away and curve picture so that outside mold
The temperature of side increases so that 6 outside of pipe improves pipe in formation in higher forming temperature to have good plasticity
Mobile performance of the base 6 on the outside of the mold at fillet simultaneously carries out feed supplement in time, prevents small bend radius tube from pushing away outside material in o ing
Expect that excessive drawing crack is thinned, is conducive to once-forming small-bend radius crooked part.
Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, according to the utility model thought, there will be changes in the specific implementation manner and application range.To sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (5)
1. a kind of small bend radius tube differential temperature pushes away the device of o ing, which is characterized in that including push away bending mould, core print, filler and
It cuts somebody's hair, the core print and filler are arranged at the forming intracavitary for pushing away bending mould, and the entrance for pushing away bending mould is provided with
Preceding guide sleeve, the outlet end for pushing away bending mould are provided with rear guide sleeve, and the bending forming for pushing away bending mould shapes on the outside of cavity
One end is provided with heating rod, and one end of the bending forming forming intracavitary side for pushing away bending mould is provided with bosh, described
It is provided with the first thermocouple around heating rod, is provided with the second thermocouple around the bosh, in the preceding guide sleeve
If cut somebody's hair and offset with filler stem, it is described after cutting somebody's hair in guide sleeve offset with core print.
2. small bend radius tube differential temperature according to claim 1 pushes away the device of o ing, which is characterized in that the heating rod
It is arranged in the external arc side of the bending forming cavity, the heating rod vertically cut by the external arc of the bending forming cavity
Line, the heating rod are at least arranged one.
3. small bend radius tube differential temperature according to claim 1 pushes away the device of o ing, which is characterized in that the cooling water
Slot is arranged in the Inner arc side of the bending forming cavity, and the cooling section of the bosh is along the bending forming cavity
Inner arc is distributed.
4. small bend radius tube differential temperature according to claim 1 or 2 pushes away the device of o ing, which is characterized in that described to fill out
Material is the rubber cylinder block that hardness is 80~85A shore hardnesses, and the thickness of the rubber cylinder block is 7~10mm, the rubber
Using fluorubber or perfluoroelastomers.
5. pushing away the device of o ing according to small bend radius tube differential temperature according to claim 4, which is characterized in that the core
Head is uniformly distributed bending in type hole, and the core print is at least provided with 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820102117.4U CN207735387U (en) | 2018-01-22 | 2018-01-22 | A kind of small bend radius tube differential temperature pushes away the device of o ing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820102117.4U CN207735387U (en) | 2018-01-22 | 2018-01-22 | A kind of small bend radius tube differential temperature pushes away the device of o ing |
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| Publication Number | Publication Date |
|---|---|
| CN207735387U true CN207735387U (en) | 2018-08-17 |
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|---|---|---|---|
| CN201820102117.4U Withdrawn - After Issue CN207735387U (en) | 2018-01-22 | 2018-01-22 | A kind of small bend radius tube differential temperature pushes away the device of o ing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273889A (en) * | 2018-01-22 | 2018-07-13 | 南昌航空大学 | A kind of small bend radius tube differential temperature pushes away the method and device of o ing |
-
2018
- 2018-01-22 CN CN201820102117.4U patent/CN207735387U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273889A (en) * | 2018-01-22 | 2018-07-13 | 南昌航空大学 | A kind of small bend radius tube differential temperature pushes away the method and device of o ing |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180817 Effective date of abandoning: 20230623 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180817 Effective date of abandoning: 20230623 |