CN201603806U - Hot-press forming die for three-way pipe fitting of super-long branch pipe - Google Patents
Hot-press forming die for three-way pipe fitting of super-long branch pipe Download PDFInfo
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- CN201603806U CN201603806U CN2009202731913U CN200920273191U CN201603806U CN 201603806 U CN201603806 U CN 201603806U CN 2009202731913 U CN2009202731913 U CN 2009202731913U CN 200920273191 U CN200920273191 U CN 200920273191U CN 201603806 U CN201603806 U CN 201603806U
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Abstract
The utility model relates to a hot-press forming die for a three-way pipe fitting of a super-long branch pipe, which comprises a first upper die, a second upper die, a first lower die, a second lower die, a third lower die, a fourth lower die and a pull rod; a primary forming die consists of the first upper die and the first lower die; a secondary forming die consists of the first upper die and the second lower die; a third forming die consists of the first upper die and the third lower die; and the final forming die consists of the second upper die, the fourth lower die and a pull rod. The hot-press forming die adopts two upper dies and four lower dies for drawing and extruding the super-long branch pipe gradually; in the hot-press forming process of each time, a root R and an outer diameter D of the branch pipe are controlled to be reduced gradually, thus ensuring that the drawing deformation of material is within the limit of drawing rate, and solving the forming problem of the three-way pipe of the super-long branch pipe with M larger than 1.5C.
Description
Technical field
The utility model relates to pipe fitting process equipment field, the especially mould of hot forming tee pipe fitting.
Background technology
The extensive use tee pipe fitting carries out the pipeline connection in the pipeline.Hot press forming method commonly used is made the seam-less T-joint pipe fitting of major diameter and thick tube wall in the production, hot press forming method forms in mould after being meant a heating of pipe blank, because adopt the pipe after the heating to suppress, material forming devices needed tonnage demand can reduce.As shown in Figure 1, the length M of seam-less T-joint arm 1 equals to be responsible for 2 length C in the CNS, hot forming for the seam-less T-joint of this GB, concrete technology such as Fig. 2, shown in Figure 3: earlier will be greater than the pipe 4 of threeway diameter, flatten approximately to the size of threeway diameter, open a hole 6 at the position of stretching arm; With pipe 4 heating, put between the patrix 3 and counterdie 7 of hot forming mould, and the pull bar 5 of the stretching arm of in the hole 6 of pipe 4, packing into; Forcing press drives the patrix 3 descending matched moulds that carry out as shown in Figure 3, and by radial compression, according to the constancy of volume principle, the pipe metal flows to the arm direction pipe 4 in the process of radial compression under the effect of pressure, forms arm 1 simultaneously under the stretching of pull bar 5.The forming process of arm is that the stretching by pipe radial compression and arm position is shaped, and arm is that the radial motion by blank tube material compensates, so be also referred to as radial compensation technology.
Along with the development of pipe technology, need a kind of arm length M greater than being responsible for the seam-less T-joint of length C more than 50%, hereinafter referred to as the threeway of overlength arm.If produce according to above-mentioned once-forming technology for the threeway of this overlength arm, long because of arm one-off drawing deflection, material deformation has surmounted the extensibility limit, causes forming quality defective, can't direct forming.
The utility model content
The applicant can not make the shortcoming of super long branch pipe three-way pipe fitting at above-mentioned existing production technology and mould, the hot forming mould of a cover super long branch pipe three-way pipe fitting is provided, thereby can makes super long branch pipe three-way pipe fitting on existing equipment.
The technical scheme that the utility model adopted is as follows:
A kind of hot forming mould of super long branch pipe three-way pipe fitting comprises upper die and lower die and pull bar, specifically comprises first patrix, second patrix, first counterdie, second counterdie, the 3rd counterdie, the 4th counterdie, pull bar; The original formation mould is made up of first patrix and first counterdie: the straight length die cavity diameter of first patrix is D1; The straight length die cavity diameter of first counterdie is D1, and a pipeline section die cavity diameter is D1, and straight tube and arm transition position radius of corner are R1; The secondary forming mould is made up of first patrix and second counterdie: the straight length die cavity diameter of second counterdie is D1, and a pipeline section die cavity diameter is D1, and straight tube and arm transition position radius of corner are R2; No. three times shaping dies is made up of first patrix and the 3rd counterdie: the straight length die cavity diameter of the 3rd counterdie is D1, and a pipeline section die cavity diameter is D2, and straight tube and arm transition position radius of corner are R2; Final shaping dies is made up of second patrix, the 4th counterdie and pull bar: the straight length die cavity diameter of second patrix is D3; The straight length die cavity diameter of the 4th counterdie is D3, and a pipeline section die cavity diameter is D3, and straight tube and arm transition position radius of corner are R3.Each size relationship is: R3=R, R2=R3/ α, R1=R2/ β; D3=S * D, D2=D3+ (5～10) mm, D1=D2/ γ; Wherein D is the threeway diameter, and R is three-way straight pipe and arm transition position radius of corner, and S is a material known hot forming shrinkage factor, and the α value is 65%～75%, is preferably 70%; The β value is 65%～75%, is preferably 70%; The γ value is 81%～91%, is preferably 86%.
The utility model adopts two patrixes and four counterdies, and progressively stretching has squeezed out the overlength arm; In each hot forming, successively decrease successively by the size of control arm root R and arm outer diameter D, guarantee that material tensile deformation within the extensibility limit, has solved the shaping problem of the overlength arm threeway of M＞1.5C.
Description of drawings
Fig. 1 is the product cross section figure of seam-less T-joint pipe fitting;
Fig. 2 is the hot forming schematic diagram of existing seam-less T-joint, and this is state before being shaped;
Fig. 3 is the hot forming schematic diagram of existing seam-less T-joint, and this is the back state that is shaped;
Fig. 4 is the front view of original formation mould of the present utility model, state before the work;
The same Fig. 4 of Fig. 5 is the back state of working;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the front view of secondary forming mould of the present utility model, state before the work;
The same Fig. 7 of Fig. 8 is the back state of working;
Fig. 9 is the left view of Fig. 8;
Figure 10 is the front view of No. three shaping dies of the present utility model, state before the work;
The same Figure 10 of Figure 11 is the back state of working;
Figure 12 is the left view of Figure 11;
Figure 13 is the front view of final shaping dies of the present utility model, state before the work;
The same Figure 13 of Figure 14 is the back state of working;
Figure 15 is the left view of Figure 14;
Figure 16 is the front view of final shaping dies of the present utility model, work back state.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described.
To shown in Figure 16, the hot forming mould of super long branch pipe three-way pipe fitting described in the utility model comprises first patrix 11, second patrix 19, first counterdie 13, second counterdie 15, the 3rd counterdie 17, the 4th counterdie 20, pull bar 22 as Fig. 4.As Fig. 4, Fig. 5, shown in Figure 6, the original formation mould is made up of first patrix 11 and first counterdie 13: the straight length die cavity diameter of first patrix 11 is D1; The straight length die cavity diameter of first counterdie 13 is D1, and a pipeline section die cavity diameter is D1, and straight tube and arm transition position radius of corner are R1.As Fig. 7, Fig. 8, shown in Figure 9, the secondary forming mould is made up of first patrix 11 and second counterdie 15: the straight length die cavity diameter of second counterdie 15 is D1, and a pipeline section die cavity diameter is D1, and straight tube and arm transition position radius of corner are R2.As Figure 10, Figure 11, shown in Figure 12, No. three times shaping dies is made up of first patrix 11 and the 3rd counterdie 17: the straight length die cavity diameter of the 3rd counterdie 17 is D1, and a pipeline section die cavity diameter is D2, and straight tube and arm transition position radius of corner are R2.As Figure 13, Figure 14, Figure 15, shown in Figure 16, final shaping dies is made up of with pull bar 22 second patrix 19, the 4th counterdie 20: the straight length die cavity diameter of second patrix 19 is D3; The straight length die cavity diameter of the 4th counterdie 20 is D3, and a pipeline section die cavity diameter is D3, and straight tube and arm transition position radius of corner are R3; Pull bar 22 head diameters are identical with a bore, and the structure of pull bar 22 is identical with the pull bar of assembly method and prior art.For producing the threeway of the overlength arm of M＞1.5C as shown in Figure 1, the product diameter is D, and straight tube and arm knuckle are R, and then the relation of each size is as follows: R3=R, R2=R3/ α, R1=R2/ β; D3=S * D, D2=D3+ (5～10) mm, D1=D2/ γ; Wherein the α value is 65%～75%, is preferably 70%; The β value is 65%～75%, is preferably 70%; The γ value is 81%～91%, is preferably 86%; S is a material known hot forming shrinkage factor.
Adopt the utility model shaping super long branch pipe three-way pipe fitting, need to adopt following processing step:
The first step, base: carry out the blanking of straight tube pipe according to product specification, straight tube pipe diameter D0 is greater than 50%～60% of threeway diameter D.
In second step, flatten for the first time: the pipe diameter is flattened die cavity diameter dimension D1 to first counterdie 13 with hydraulic press, can be less than D1 3～5mm, pipe 12 is shaped.
The 3rd step, heating for the first time: utilize Frequency Induction Heating, a control side pipe base to the arm that will be shaped carries out local heat, makes arm side material be easy to flow toward mould arm place and form arm.
The 4th step, hot forming for the first time: as Fig. 4, Fig. 5, shown in Figure 6, pipe 12 is put between the original formation mould of being made up of first patrix 11 and first counterdie 13 and is suppressed, and suppresses a segment distance H1, and pipe 14 is shaped.At this moment: 1. fits fully with patrix in the material of pipe patrix side distortion back, the 2. pipe arm root part of R1 that is shaped, 3. the arm diameter size of D1 that is shaped.
The 5th step, heating for the second time: utilize Frequency Induction Heating, control is only carried out local heat to a side pipe base of the arm that will be shaped.
The 6th step, hot forming for the second time: as Fig. 7, Fig. 8, shown in Figure 9, pipe 14 is put between the secondary forming mould of being made up of first patrix 11 and second counterdie 15 and is suppressed, and suppresses a segment distance H2, and pipe 16 is shaped.At this moment: 1. fits fully with patrix in the material of pipe patrix side distortion back, 2. the pipe arm root R2 part that is shaped.
The 7th step, heating for the third time; Utilize Frequency Induction Heating, control is only carried out local heat to a side pipe base of the arm that will be shaped.
The 8th step, hot forming for the third time: as Figure 10, Figure 11, shown in Figure 12, pipe 16 is put between No. three shaping dies of being made up of first patrix 11 and the 3rd counterdie 17 and is suppressed, and suppresses a segment distance H3, and pipe 18 is shaped.At this moment: the 1. pipe arm root R2 part that is shaped, 2. the arm diameter D2 size that is shaped.
In the 9th step, flatten: the die cavity diameter D3 size of the semi-finished product pipe 18 usefulness hydraulic presses flattening behind the hot forming for the third time to the 4th counterdie 20, can be less than D33～5mm, pipe 18 ' is shaped.
The tenth step, the 4th heating: whole heating in electric furnace.
In the 11 step, the 4th hot forming: as Figure 13, Figure 14, shown in Figure 15, pipe 18 ' is put between the final shaping dies of being made up of second patrix 19, the 4th counterdie 20, and second patrix 19 presses down compacting one segment distance H4, and pipe 21 is shaped.At this moment: 1. fit the 2. pipe arm root R3 part that is shaped, 3. the arm diameter D3 size that is shaped behind the material deformation of pipe patrix side fully with patrix.
In the 12 step, cut perforate: remove arm hat head with the cutting cutting at pipe 21 tube ends.
The 13 step, final arm stretches: as shown in figure 16, with Frequency Induction Heating to pipe 21 arms one side local heat after, pipe is put into the 4th counterdie 20, again pack into the perforate of pipe 21 of counterdie pull bar 22, with second patrix, 19 matched moulds, by the stretching at 22 pairs of arm positions of counterdie pull bar, a length of tube is met the demands, and threeway product 23 is shaped; Patrix is not suppressed in this step process, and the extensional motion of pull bar 22 is only arranged.
After the product depanning, the dimensional contraction process that also has stress release and the hot pyrocondensation of rising to cause.Shrinkage factor has designed in the size of final mould.After the material contraction was stable, the diameter of three-way straight pipe Duan Yuzhi pipeline section was D, just the desired size of drawing.
More than describing is to explanation of the present utility model, it or not qualification to utility model, the utility model institute restricted portion is referring to claim, under the situation of spirit of the present utility model, the utility model can be done any type of modification, for example regulates shaping number of times and die size according to concrete material.
Claims (2)
1. the hot forming mould of a super long branch pipe three-way pipe fitting comprises upper die and lower die and pull bar, it is characterized in that: specifically comprise first patrix, second patrix, first counterdie, second counterdie, the 3rd counterdie, the 4th counterdie, pull bar; The original formation mould is made up of first patrix and first counterdie: the straight length die cavity diameter of first patrix is D1; The straight length die cavity diameter of first counterdie is D1, and a pipeline section die cavity diameter is D1, and straight tube and arm transition position radius of corner are R1; The secondary forming mould is made up of first patrix and second counterdie: the straight length die cavity diameter of second counterdie is D1, and a pipeline section die cavity diameter is D1, and straight tube and arm transition position radius of corner are R2; No. three times shaping dies is made up of first patrix and the 3rd counterdie: the straight length die cavity diameter of the 3rd counterdie is D1, and a pipeline section die cavity diameter is D2, and straight tube and arm transition position radius of corner are R2; Final shaping dies is made up of second patrix, the 4th counterdie and pull bar: the straight length die cavity diameter of second patrix is D3; The straight length die cavity diameter of the 4th counterdie is D3, and a pipeline section die cavity diameter is D3, and straight tube and arm transition position radius of corner are R3; Each size relationship is: R3=R, R2=R3/ α, R1=R2/ β; D3=S * D, D2=D3+ (5～10) mm, D1=D2/ γ; Wherein D is the threeway diameter, and R is three-way straight pipe and arm transition position radius of corner, and S is a material known hot forming shrinkage factor, and the α value is 65%～75%, and the β value is 65%～75%, and the γ value is 81%～91%.
2. according to the hot forming mould of the described super long branch pipe three-way pipe fitting of claim 1, it is characterized in that: the α value is preferably 70%, and the β value is preferably 70%, and the γ value is preferably 86%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202731913U CN201603806U (en) | 2009-12-01 | 2009-12-01 | Hot-press forming die for three-way pipe fitting of super-long branch pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202731913U CN201603806U (en) | 2009-12-01 | 2009-12-01 | Hot-press forming die for three-way pipe fitting of super-long branch pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201603806U true CN201603806U (en) | 2010-10-13 |
Family
ID=42948515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202731913U Expired - Lifetime CN201603806U (en) | 2009-12-01 | 2009-12-01 | Hot-press forming die for three-way pipe fitting of super-long branch pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201603806U (en) |
-
2009
- 2009-12-01 CN CN2009202731913U patent/CN201603806U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WUXI XINFENG PIPE-FITTING CO., LTD. Free format text: FORMER NAME: WUXI CITY XINFENG PIPE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 214064 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 54 Patentee after: Wuxi Xinfeng Pipe-Fitting Co., Ltd. Address before: 214064 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 54 Patentee before: Wuxi City Xinfeng Pipe Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20101013 Effective date of abandoning: 20091201 |