CN105268816A - Rigid and plastic composite expansion forming device of large-caliber T-branch pipe - Google Patents
Rigid and plastic composite expansion forming device of large-caliber T-branch pipe Download PDFInfo
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- CN105268816A CN105268816A CN201510351566.3A CN201510351566A CN105268816A CN 105268816 A CN105268816 A CN 105268816A CN 201510351566 A CN201510351566 A CN 201510351566A CN 105268816 A CN105268816 A CN 105268816A
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Abstract
A rigid and plastic composite expansion forming device of a large-caliber T-branch pipe comprises an upper half mold and a lower half mold. A forming cavity is formed between the upper half mold and the lower half mold. Expansion extrusion puncher pins are arranged at the two ends of the forming cavity respectively. The lower half mold is provided with a branch pipe forming cavity, and a balance puncher pin is arranged in the branch pipe forming cavity. A rigid expansion inner mold is arranged between the two expansion extrusion puncher pins and comprises push rods located at the two ends respectively. A forming inner mold block which is matched with the branch pipe forming cavity and used for driving a pipe blank to do expansion deformation is arranged between the two push rods. The forming inner mold block is connected with the two push rods through dual hinge rods. The axes of the push rods are in sliding fit with the forming cavity to be arranged in the corresponding expansion extrusion puncher pins, and one push rod is provided with a quick demounting connecting structure. Thrust devices which are used for driving the expansion extrusion puncher pins to slide in the forming cavity and used for driving the push rods to slide in the expansion extrusion puncher pins are arranged at the two ends of the forming cavity respectively. An auxiliary pressure mechanism is arranged between the two push rods.
Description
Technical field
The invention belongs to tubing without Machining Technology for Cutting field, be specifically related to a kind of wide tee pipe rigid plastic Compound Forming of Bulging shaped device.
Background technology
The kind of tube bulge is a lot, is mainly divided into rigidity bulging and soft mode bulging two class.Rigidity punch bulging is only applicable to the bulging processing of form and dimensional precision less demanding axial symmetry bulging part.When utilizing liquid, gas or elastomer to carry out bulging as transmission medium, be commonly referred to as soft mode bulging.Liquid usable oils, emulsion or water, elastomer adopts polyurethane rubber or natural rubber usually.Paraffin is easy in solid or liquid unique features owing to having, and recyclable recycling, also it can be used as bulging transmission medium, and achieve good technique effect aborning.Therefore, according to the difference of transmission medium, soft mode bulging can be divided into again hydraulic expanding-forming, barometric pressure load, rubber bulging and paraffin bulging etc.Soft mode bulging is compared with rigid mould bulging, is particularly suitable for various complex-shaped pipe fitting processing, has obvious technical economic benefit.
In three-way pipe bulging process, internal surface of bloom need act on very large bulging pressure.According to the production method of bulging pressure and the number of bulging drift and the difference of structure, the method for three-way pipe Plastic Forming can be divided into three kinds accordingly: liquid medium Extrusion bulging, plastic medium compound punch Extrusion bulging and plastic medium separate punches Extrusion bulging three kinds.
As shown in Figure 1, be the structural representation of existing a kind of three-way pipe liquid medium Extrusion bulging mould.This three-way pipe liquid medium Extrusion bulging mould is made up of two-half die, pipe is placed in one, inner liquid provides interior pressure by special pressure charging system, the motion of size and left and right two drifts of its force value has nothing to do, extruding force is provided by left and right drift, balance drift provides the equilibrant force of a tube end, by the coordinative role of these three power, can make pipe expansion forming under super-pressure hydrostatic pressure.The method due to bulging pressure field distribution the most uniform and stable, product quality formed thereby is best, but required bulging pressure is larger, need hundreds if not thousands of MPas, and Normal hydraulic pump can only produce the pressure of about 30MPa, therefore need pressure charging system be configured, also very high to the requirement of control technology, equipment is costly.In addition, liquid medium Extrusion bulging is shaped and can not be applied to as medium carbon steel, large scale heavy section casting etc. need heating to improve plasticity, to reduce the bulging processing of drag.
As shown in Figure 2, be the structural representation of existing a kind of plastic medium compound punch Extrusion bulging mould.The drift of this expanding die is a terraced structure, can exert pressure respectively to medium and tube wall two ends.During Extrusion bulging, first punch head enters in pipe and exerts pressure to plastic medium, makes the corresponding tube wall protuberance of arm die cavity produce bulging, when drift step contacts with pipe, produce extruding force, pipe produces plastic deformation under the acting in conjunction of interior pressure and extruding force, and arm is constantly increased.
This expansion forming method, except having that punch structure is simple, except equipment needed thereby and the advantage such as device is less, operation is convenient, also has the advantage that wall ratio is more uniform and stable, amplitude of variation is little of product.Because the size relationship extruding drift, die, pipe and bulging medium decides the initial pressure of bulging, therefore in forming process, the adjustment of bulging pressure is comparatively difficult, can only carry out within the specific limits, is mainly realized by the structure of extruding drift of asking permission to absent oneself briefly.Therefore, comparatively strict to the requirement of the aspects such as the size of pipe, material and mould, there is significant limitation in using.
As shown in Figure 3, be the structural representation of existing a kind of plastic medium separate punches Extrusion bulging mould.The interior pressure of this expanding die is produced by bulging drift Extrusion bulging medium, and its numerical value has nothing to do with extruding drift and determined by the motion of bulging drift.The mechanism of production of bulging pressure is shaped similar to plastic medium compound punch Extrusion bulging, and the difference of the two is mainly whether extruding drift and bulging drift are integrated.In plastic medium separate punches extrusion forming method, extruding drift and bulging drift are driven by composite oil cylinder, realize being separated.
Compared with being shaped with plastic medium compound punch Extrusion bulging, the structure of the bulging drift of plastic medium separate punches Extrusion bulging mould and motion are comparatively complicated, and need increase a set of driving bulging and rush cephalomotor mechanism.
Compared with liquid medium Extrusion bulging mode, although the motion of plastic medium separate punches Extrusion bulging drift is comparatively complicated, but avoid expensive hydraulic pressure boosting system, therefore there is equipment investment less, and the advantage that productivity ratio is high, forming effect is good, but it also exists that the service life of drift is lower, mould structure is more complicated and can not be applied to the too little occasion of tube blank size.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of wide tee pipe rigid plastic Compound Forming of Bulging shaped device, the expansion forming requirement of three-way pipe can not only be met, and simultaneously in conjunction with rigidity bulging and hydraulic expanding-forming, the overall process of three-way pipe bulging distortion can be controlled preferably.
For achieving the above object, the invention provides following technical scheme:
A kind of wide tee pipe rigid plastic Compound Forming of Bulging shaped device, comprise upper mold section and female die, cylindrical shaping die cavity is provided with between described upper mold section and female die, the two ends of described shaping die cavity are separately installed with the bulging extruding drift be slidably matched with it, described female die is provided with the arm forming cavity of the intersect vertical axis of axis and described shaping die cavity, in described arm forming cavity, balance drift is installed, it is characterized in that: between two described bulging extruding drifts, be provided with rigidity bulging internal mold, described rigidity bulging internal mold comprises the push rod laying respectively at two ends, be provided with between two described push rods and coordinate with described arm forming cavity and shaping inner module for driving pipe bulging to be out of shape, be connected by two hinge bar between described shaping inner module with two described push rods, the axis of described push rod and the axis being parallel of described shaping die cavity are also slidably installed respectively and extrude in drift at corresponding described bulging, and wherein a push rod is provided with quick-detachment syndeton, the two ends of described shaping die cavity are respectively equipped with the thrust device for driving described bulging extruding drift to slide in described shaping die cavity and for driving described push rod to slide in described bulging extruding drift,
Aux. pressure mechanism is provided with between two described push rods, described aux. pressure mechanism comprises balancing pole, two described push rods one end end face is in opposite directions provided with balance slide opening, the two ends of described balancing pole are slidably installed respectively in two described balance slide openings, and the two ends of described balancing pole are set with the balancing spring being provided with and being positioned at corresponding described balance slide opening; Auxiliary hydraulic cylinder is provided with between described balancing pole and described shaping inner module.
Further, described push rod and described bulging extrude between drift and are provided with high pressure seal structure.
Further, the described push rod split being provided with described quick-detachment syndeton is set to two sections, wherein the end face center of one section of described push rod is provided with a taper combined hole, the end face center of another section of described push rod is provided with the taper joint head coordinated with described taper combined hole, and is provided with antislip body between the end face of two sections of described push rods.
Further, the damped coefficient of two described balancing springs is equal.
Further, described auxiliary hydraulic cylinder is multistage hydraulic cylinder, described multistage hydraulic cylinder comprises auxiliary piston rod and at least two-stage is stacked is set in together and is the auxiliary hydraulic cylinder cylinder body of stretching structure, described auxiliary piston rod is sleeved on the auxiliary hydraulic cylinder cylinder body of innermost layer, rodless cavity is formed between outermost auxiliary hydraulic cylinder cylinder body and auxiliary piston rod, rod end chamber is formed between the auxiliary hydraulic cylinder cylinder body and auxiliary piston rod of innermost layer, classification oil pocket is formed between adjacent two-stage hydraulic cylinder body, described rodless cavity, rod end chamber is equipped with on classification oil pocket the hydraulic fluid port be connected with hydraulic power source, being positioned at outermost described auxiliary hydraulic cylinder cylinder body is fixedly mounted on described balancing pole, and described auxiliary piston rod is fixedly connected with described shaping inner module.
Further, between adjacent two-stage hydraulic cylinder body and between auxiliary piston rod and innermost layer hydraulic cylinder body, the top being positioned at outer field hydraulic cylinder body is provided with the inner baffle ring extended radially inwardly, the bottom being positioned at the hydraulic cylinder body/auxiliary piston rod of internal layer be provided with extend radially outwardly and the outer baffle ring coordinated with inner baffle ring, be provided with hermetically-sealed construction between the periphery wall of described inner baffle ring and internal layer hydraulic cylinder body, between the internal perisporium of described outer baffle ring and outer hydraulic cylinder body, be provided with hermetically-sealed construction.
Further, the hydraulic fluid port be arranged on described rod end chamber and classification oil pocket is arranged on described inner baffle ring.
Beneficial effect of the present invention is:
Wide tee pipe rigid plastic Compound Forming of Bulging shaped device of the present invention, by arranging rigidity bulging internal mold between two bulging extruding drifts, during use, pipe is placed in shaping die cavity, rigidity bulging internal mold correspondence is arranged in pipe, the two ends of pipe utilize bulging to extrude drift press seal respectively, and fill liquid medium in pipe; During bulging, utilize thrust device to drive bulging extruding drift to apply axial extruding force to pipe, and utilize thrust device to drive the push rod synchronous relative motion at two ends, because push rod occupies pipe inner space, and then cause the pressure increase of liquid medium, liquid bulging pressure is applied to pipe; In addition, the motion of push rod also can drive shaping inner module to the motion of arm forming cavity, and shaping inner module applies rigidity bulging power to the bulging deformed region of pipe, under the acting in conjunction of rigidity bulging power and liquid bulging pressure, drive the distortion of pipe bulging, and then be configured as three-way pipe; By arranging aux. pressure mechanism, in the starting stage of pipe bulging distortion, because the angle of two hinge bar and pipe axis is very little, be converted to the vertical stress component perpendicular to pipe axis of shaping inner module less by push rod thrust, and the pressure effect of aux. pressure mechanism can act directly on shaping inner module, with vertical stress component and the acting in conjunction of liquid bulging pressure, pipe bulging can be driven better to be out of shape, namely can to meet the expansion forming requirement of wide tee pipe;
Owing to have employed rigidity bulging internal mold and aux. pressure mechanism, rigidity bulging power is applied to pipe, suitably can reduce the size of liquid medium to the liquid bulging pressure that pipe applies, namely the thrust size that thrust device applies push rod can be reduced, the movement rate of shaping inner module and stroke all can by the motion controls of push rod, thus, wide tee pipe rigid plastic Compound Forming of Bulging shaped device of the present invention can control the overall process of three-way pipe bulging distortion preferably; And under the effect of liquid bulging pressure, pipe is in expansion forming process, and its inwall all can be subject to the effect of liquid bulging pressure, can fit with the inwall of shaping die cavity and arm forming cavity after pipe distortion, forming quality is better.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is the structural representation of existing a kind of three-way pipe liquid medium Extrusion bulging mould;
Fig. 2 is the structural representation of existing a kind of plastic medium compound punch Extrusion bulging mould;
Fig. 3 is the structural representation of existing a kind of plastic medium separate punches Extrusion bulging mould;
Fig. 4 is the structural representation of wide tee pipe rigid plastic Compound Forming of Bulging shaped device embodiment of the present invention;
Fig. 5 is the A detail drawing of Fig. 4;
Fig. 6 is the B detail drawing of Fig. 4;
Fig. 7 is the structural representation of auxiliary hydraulic cylinder.
Description of reference numerals:
1-upper mold section; 2-female die; 3-shaping die cavity; 4-bulging extruding drift; 5-arm forming cavity; 6-balances drift; 7-pipe; 8-push rod; 9-shaping inner module; The two hinge bar of 10-; 11-taper combined hole; 12-taper joint head; 13-antislip body; 14-outer cylinder body; 15-inner cylinder body; 16-inner piston rod; 17-outer piston bar;
50-balancing pole; 51-balances slide opening; 52-balancing spring; 53-auxiliary hydraulic cylinder; 54-auxiliary piston rod; 55-auxiliary hydraulic cylinder cylinder body; 56-rodless cavity; 57-rod end chamber; 58-classification oil pocket; 59-hydraulic fluid port; 60-inner baffle ring; 61-outer baffle ring.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described, can better understand the present invention and can be implemented, but illustrated embodiment is not as a limitation of the invention to make those skilled in the art.
As shown in Figure 4, be the structural representation of wide tee pipe rigid plastic Compound Forming of Bulging shaped device embodiment of the present invention.The wide tee pipe rigid plastic Compound Forming of Bulging shaped device of the present embodiment, comprise upper mold section 1 and female die 2, cylindrical shaping die cavity 3 is provided with between upper mold section 1 and female die 2, the two ends of shaping die cavity 3 are separately installed with the bulging extruding drift 4 be slidably matched with it, female die 1 is provided with the arm forming cavity 5 of the intersect vertical axis of axis and shaping die cavity 3, the inwall of arm forming cavity 5 is cylindrical, balance drift 6 is installed in arm forming cavity 5, rigidity bulging internal mold is provided with between two bulging extruding drifts 4, rigidity bulging internal mold comprises the push rod 8 laying respectively at two ends, be provided with between two push rods 8 and coordinate with arm forming cavity 5 and shaping inner module 9 for driving pipe 7 bulging to be out of shape, be connected by two hinge bar 10 between shaping inner module 9 with two push rods 8.
The axis of push rod 8 and the axis being parallel of shaping die cavity 3 are also slidably installed respectively and extrude in drift 4 at corresponding bulging, namely two push rods 8 are slidably installed respectively in two bulging extruding drifts 4, and wherein a push rod 8 is provided with quick-detachment syndeton, push rod 8 split that the present embodiment is provided with quick-detachment syndeton is set to two sections, wherein the end face center of one section of push rod 8 is provided with a taper combined hole 11, the end face center of another section of push rod 8 is provided with the taper joint head 12 coordinated with taper combined hole 11, and be provided with antislip body 13 between the end face of two sections of push rods 8, because push rod 8 is only subject to the effect of axial thrust, thus utilize taper combined hole 11 and taper joint head 12 can separation fast between sight line two ends push rod 8 and combination.By arranging quick-detachment syndeton, pipe 7 can be made to be sleeved on rigidity bulging internal mold from the push rod 8 be separated.
The two ends of shaping die cavity 3 are respectively equipped with the thrust device for driving bulging extruding drift 4 to slide in shaping die cavity 3 and for driving push rod 8 to slide in bulging extruding drift 4.The thrust device of the present embodiment adopts composite hydraulic cylinder, this composite hydraulic cylinder comprises outer cylinder body 14, the center of outer cylinder body 14 is provided with the inner cylinder body 15 coaxial with it, be provided with in inner cylinder body 15 and be slidably matched and the inner piston rod 16 be connected with corresponding push rod 8 with it, be provided with in outer cylinder body 14 and be slidably matched with it and extrude with corresponding bulging the outer piston bar 17 that drift 4 is fixedly connected with, outer piston bar 17 is slidably matched and is sleeved on inner cylinder body 15.So, the two ends that outer piston bar 17 just can be utilized to drive bulging to extrude drift 4 pairs of pipes 7 apply extruding force effect respectively, inner piston rod 16 is utilized to drive push rod to slide in bulging extruding drift 4, and then making the liquid medium being full of pipe 7 inside apply liquid bulging pressure to pipe 7 and drive shaping inner module 9 to move to arm forming cavity 5, the bulging deformed region to pipe 7 applies rigidity bulging power.Certainly, the Driven by Hydraulic Cylinder bulging of other versions also can be adopted to extrude drift 4 for thrust device and push rod 8 moves, move as adopted a center Driven by Hydraulic Cylinder push rod 8, move at the uniform multiple outer Driven by Hydraulic Cylinder bulging extruding drift 4 of central liquid cylinder pressure outer ring again, its principle is suitable, is not repeated.Preferably, the push rod 8 of the present embodiment and bulging extrude between drift 4 and are provided with high pressure seal structure, certainly, be also provided with hermetically-sealed construction, can prevent liquid medium from leaking between bulging extruding drift 4 and the inwall of shaping die cavity 3.In addition, after outer piston bar 17 bounces back, quick-detachment syndeton can be outside exposed, is convenient to install pipe 7 and the three-way pipe after taking off shaping.
Aux. pressure mechanism is provided with between two push rods 8 of the present embodiment, aux. pressure mechanism comprises balancing pole 50, two push rods 8 one end end face is in opposite directions provided with balance slide opening 51, the two ends of balancing pole 50 are slidably installed respectively in two balance slide openings 51, and the two ends of balancing pole 50 are set with the balancing spring 52 being provided with and being positioned at corresponding balance slide opening; Auxiliary hydraulic cylinder 53 is provided with between balancing pole 50 and shaping inner module 9.The damped coefficient of two balancing springs 52 of the present embodiment is equal, can ensure the dynamic equilibrium of balancing pole 50.
Further, auxiliary hydraulic cylinder 53 is multistage hydraulic cylinder, multistage hydraulic cylinder comprises auxiliary piston rod 54 and at least two-stage is stacked is set in together and is the auxiliary hydraulic cylinder cylinder body 55 of stretching structure, auxiliary piston rod 54 is sleeved on the auxiliary hydraulic cylinder cylinder body 55 of innermost layer, rodless cavity 56 is formed between outermost auxiliary hydraulic cylinder cylinder body 55 and auxiliary piston rod 54, rod end chamber 57 is formed between the auxiliary hydraulic cylinder cylinder body 55 and auxiliary piston rod 54 of innermost layer, classification oil pocket 58 is formed between adjacent two-stage hydraulic cylinder body 55, rodless cavity 56, rod end chamber 57 with classification oil pocket 58 is equipped with the hydraulic fluid port 59 be connected with hydraulic power source.As shown in Figure 7, the auxiliary hydraulic cylinder 53 of the present embodiment comprises three grades and is stackedly set in together and is the auxiliary hydraulic cylinder cylinder body 55 of stretching structure, being positioned at outermost auxiliary hydraulic cylinder cylinder body 55 is fixedly mounted on balancing pole 50, and auxiliary piston rod 54 is fixedly connected with shaping inner module 9.Adopt the auxiliary hydraulic cylinder 53 of this structure, outwards provide in the process of hydraulic thrust at auxiliary piston rod 54, rodless cavity 56 oil-feed, rod end chamber 57 and classification oil pocket 58 all oil returns, can realize auxiliary hydraulic cylinder 53 and extend and outwards provide hydraulic coupling; In like manner, when piston rod 54 bounces back, rodless cavity 56 oil return, rod end chamber 57 and classification oil pocket 58 all oil-feeds, can realize piston rod 54 and bounce back.
Further, between adjacent two-stage hydraulic cylinder body 55 and between auxiliary piston rod 54 and innermost layer hydraulic cylinder body 55, the top being positioned at outer field hydraulic cylinder body 55 is provided with the inner baffle ring 60 extended radially inwardly, the bottom being positioned at hydraulic cylinder body 55/ auxiliary piston rod 54 of internal layer be provided with extend radially outwardly and the outer baffle ring 61 coordinated with inner baffle ring 60, be provided with hermetically-sealed construction between the periphery wall of inner baffle ring 60 and internal layer hydraulic cylinder body 55, between the internal perisporium of outer baffle ring 61 and outer hydraulic cylinder body 55, be provided with hermetically-sealed construction.Adopt the auxiliary hydraulic cylinder 53 of this structure, between inner baffle ring 60 and outer baffle ring 61, form position-limit mechanism, prevent adjacent two-stage hydraulic cylinder body 55 and depart between innermost layer hydraulic cylinder body 55 and auxiliary piston rod 54.Preferably, and the hydraulic fluid port 59 be arranged on rod end chamber 57 and classification oil pocket 58 is arranged on inner baffle ring 60, prevents auxiliary hydraulic cylinder 53 in telescopic process, interferes between hydraulic cylinder body 55 and hydraulic fluid port 59.
The wide tee pipe rigid plastic Compound Forming of Bulging shaped device of the present embodiment, by arranging rigidity bulging internal mold between two bulging extruding drifts 4, during use, pipe 7 is placed in shaping die cavity 3, rigidity bulging internal mold correspondence is arranged in pipe 7, the two ends of pipe 7 utilize bulging to extrude drift 4 press seal respectively, and fill liquid medium in pipe 7; During bulging, composite hydraulic cylinder is utilized to drive bulging extruding drift 4 pairs of pipes 7 to apply axial extruding force, and utilize composite hydraulic cylinder to drive push rod 8 synchronous relative motion at two ends, because push rod 8 occupies pipe 7 inner space, and then cause the pressure increase of liquid medium, liquid bulging pressure is applied to pipe 7; In addition, the motion of push rod 8 also can drive shaping inner module 9 to move to arm forming cavity 5, and shaping inner module 9 applies rigidity bulging power to the bulging deformed region of pipe 7, under the acting in conjunction of rigidity bulging power and liquid bulging pressure, drive the distortion of pipe 7 bulging, and then be configured as three-way pipe.By arranging aux. pressure mechanism, in the starting stage of pipe 7 bulging distortion, because two hinge bar 10 is very little with the angle of pipe 7 axis, be converted to the vertical stress component perpendicular to pipe 7 axis of shaping inner module 9 less by push rod 8 thrust, and the pressure effect of aux. pressure mechanism can act directly on shaping inner module 9, with vertical stress component and the acting in conjunction of liquid bulging pressure, pipe bulging can be driven better to be out of shape, namely can to meet the expansion forming requirement of wide tee pipe.
Owing to have employed rigidity bulging internal mold, rigidity bulging power is applied to pipe, suitably can reduce the size of liquid medium to the liquid bulging pressure that pipe 7 applies, namely the thrust size that thrust device applies push rod can be reduced, the movement rate of shaping inner module 9 and stroke all can by the motion controls of push rod 8, thus, the present embodiment wide tee pipe rigid plastic Compound Forming of Bulging shaped device can control the overall process of three-way pipe bulging distortion preferably; And under the effect of liquid bulging pressure, pipe 7 is in expansion forming process, and its inwall all can be subject to the effect of liquid bulging pressure, pipe 7 can be fitted with the inwall of shaping die cavity 3 and arm forming cavity 5 after being out of shape, and forming quality is better.
The above embodiment is only that protection scope of the present invention is not limited thereto in order to absolutely prove the preferred embodiment that the present invention lifts.The equivalent alternative or conversion that those skilled in the art do on basis of the present invention, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (7)
1. a wide tee pipe rigid plastic Compound Forming of Bulging shaped device, comprise upper mold section and female die, cylindrical shaping die cavity is provided with between described upper mold section and female die, the two ends of described shaping die cavity are separately installed with the bulging extruding drift be slidably matched with it, described female die is provided with the arm forming cavity of the intersect vertical axis of axis and described shaping die cavity, in described arm forming cavity, balance drift is installed, it is characterized in that: between two described bulging extruding drifts, be provided with rigidity bulging internal mold, described rigidity bulging internal mold comprises the push rod laying respectively at two ends, be provided with between two described push rods and coordinate with described arm forming cavity and shaping inner module for driving pipe bulging to be out of shape, be connected by two hinge bar between described shaping inner module with two described push rods, the axis of described push rod and the axis being parallel of described shaping die cavity are also slidably installed respectively and extrude in drift at corresponding described bulging, and wherein a push rod is provided with quick-detachment syndeton, the two ends of described shaping die cavity are respectively equipped with the thrust device for driving described bulging extruding drift to slide in described shaping die cavity and for driving described push rod to slide in described bulging extruding drift,
Aux. pressure mechanism is provided with between two described push rods, described aux. pressure mechanism comprises balancing pole, two described push rods one end end face is in opposite directions provided with balance slide opening, the two ends of described balancing pole are slidably installed respectively in two described balance slide openings, and the two ends of described balancing pole are set with the balancing spring being provided with and being positioned at corresponding described balance slide opening; Auxiliary hydraulic cylinder is provided with between described balancing pole and described shaping inner module.
2. wide tee pipe rigid plastic Compound Forming of Bulging shaped device according to claim 1, is characterized in that: described push rod and described bulging extrude between drift and be provided with high pressure seal structure.
3. wide tee pipe rigid plastic Compound Forming of Bulging shaped device according to claim 1, it is characterized in that: the described push rod split being provided with described quick-detachment syndeton is set to two sections, wherein the end face center of one section of described push rod is provided with a taper combined hole, the end face center of another section of described push rod is provided with the taper joint head coordinated with described taper combined hole, and is provided with antislip body between the end face of two sections of described push rods.
4. wide tee pipe rigid plastic Compound Forming of Bulging shaped device according to claim 1, is characterized in that: the damped coefficient of two described balancing springs is equal.
5. the wide tee pipe rigid plastic Compound Forming of Bulging shaped device according to any one of claim 1-4, it is characterized in that: described auxiliary hydraulic cylinder is multistage hydraulic cylinder, described multistage hydraulic cylinder comprises auxiliary piston rod and at least two-stage is stacked is set in together and is the auxiliary hydraulic cylinder cylinder body of stretching structure, described auxiliary piston rod is sleeved on the auxiliary hydraulic cylinder cylinder body of innermost layer, rodless cavity is formed between outermost auxiliary hydraulic cylinder cylinder body and auxiliary piston rod, rod end chamber is formed between the auxiliary hydraulic cylinder cylinder body and auxiliary piston rod of innermost layer, classification oil pocket is formed between adjacent two-stage hydraulic cylinder body, described rodless cavity, rod end chamber is equipped with on classification oil pocket the hydraulic fluid port be connected with hydraulic power source, being positioned at outermost described auxiliary hydraulic cylinder cylinder body is fixedly mounted on described balancing pole, and described auxiliary piston rod is fixedly connected with described shaping inner module.
6. wide tee pipe rigid plastic Compound Forming of Bulging shaped device according to claim 5, it is characterized in that: between adjacent two-stage hydraulic cylinder body and between auxiliary piston rod and innermost layer hydraulic cylinder body, the top being positioned at outer field hydraulic cylinder body is provided with the inner baffle ring extended radially inwardly, the bottom being positioned at the hydraulic cylinder body/auxiliary piston rod of internal layer be provided with extend radially outwardly and the outer baffle ring coordinated with inner baffle ring, hermetically-sealed construction is provided with between the periphery wall of described inner baffle ring and internal layer hydraulic cylinder body, hermetically-sealed construction is provided with between the internal perisporium of described outer baffle ring and outer hydraulic cylinder body.
7. wide tee pipe rigid plastic Compound Forming of Bulging shaped device according to claim 6, is characterized in that: the hydraulic fluid port be arranged on described rod end chamber and classification oil pocket is arranged on described inner baffle ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351566.3A CN105268816A (en) | 2015-06-19 | 2015-06-19 | Rigid and plastic composite expansion forming device of large-caliber T-branch pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351566.3A CN105268816A (en) | 2015-06-19 | 2015-06-19 | Rigid and plastic composite expansion forming device of large-caliber T-branch pipe |
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| CN105268816A true CN105268816A (en) | 2016-01-27 |
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|---|---|---|---|
| CN201510351566.3A Pending CN105268816A (en) | 2015-06-19 | 2015-06-19 | Rigid and plastic composite expansion forming device of large-caliber T-branch pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS4958067A (en) * | 1972-10-07 | 1974-06-05 | ||
| JP2006198646A (en) * | 2005-01-19 | 2006-08-03 | Nisshin Steel Co Ltd | Hydroforming method |
| CN102886465A (en) * | 2012-09-24 | 2013-01-23 | 重庆科技学院 | Overall composite mechanical spiral type bulging device for car drive axle |
| CN103624131A (en) * | 2012-08-22 | 2014-03-12 | 赵伟星 | Technology for manufacturing cold extruding collecting tube |
| CN104084469A (en) * | 2014-06-25 | 2014-10-08 | 温州蓝天管件阀门有限公司 | Tee pipe hydraulic molding device |
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2015
- 2015-06-19 CN CN201510351566.3A patent/CN105268816A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4958067A (en) * | 1972-10-07 | 1974-06-05 | ||
| JP2006198646A (en) * | 2005-01-19 | 2006-08-03 | Nisshin Steel Co Ltd | Hydroforming method |
| CN103624131A (en) * | 2012-08-22 | 2014-03-12 | 赵伟星 | Technology for manufacturing cold extruding collecting tube |
| CN102886465A (en) * | 2012-09-24 | 2013-01-23 | 重庆科技学院 | Overall composite mechanical spiral type bulging device for car drive axle |
| CN104084469A (en) * | 2014-06-25 | 2014-10-08 | 温州蓝天管件阀门有限公司 | Tee pipe hydraulic molding device |
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Application publication date: 20160127 |