CN106734595A - Round steel pipe predeformation spindle-less bend pipe mould - Google Patents
Round steel pipe predeformation spindle-less bend pipe mould Download PDFInfo
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- CN106734595A CN106734595A CN201510831117.9A CN201510831117A CN106734595A CN 106734595 A CN106734595 A CN 106734595A CN 201510831117 A CN201510831117 A CN 201510831117A CN 106734595 A CN106734595 A CN 106734595A
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Abstract
The present invention proposes round steel pipe predeformation spindle-less bend pipe mould, including revolving die, wrinkle resistant piece, pattern, pressure die, pressure die, pattern and revolving die coordinate, it is to avoid round steel pipe wrinkles；Revolving die is provided with semi-circular recesses, and the setting corresponding with revolving die of pressure die, pattern is correspondingly provided with groove on pressure die and pattern, and the groove on pressure die and pattern is half elliptic groove, and the bottom of half elliptic groove corresponds to oval long axis direction.During bend pipe, the crimp of half elliptic groove is with the natural deformation direction of crooked position conversely, carrying out Contrary compensation to flexural deformation, steel pipe is maintained circularity.It is of the invention to make simple, the generation of circle phenomenon is lost when can effectively prevent pipe fitting from bending under conditions of not using mandrel, it is to avoid the complicated making processing of mandrel；The disqualification rate of part is reduced to 0.2% by 3%, and production efficiency is high, and at least 15% is improve compared with prior art.Reduce feeding, the duration of pickup, and debugging mould simple and fast.
Description
Technical field
It is to apply to prevent it from losing a kind of deflated mould of circle deformation in bending pipe fitting section bar the invention belongs to technical field of mold, especially round steel pipe predeformation spindle-less bend pipe mould.
Background technology
At present in machinery industry, it is deflated to prevent tube bending position from losing circle when round steel pipe bends, common practice is exactly to lose circle deformation in the interior increase activity mandrel of pipe or revolving die half slot processing ovalisation to eliminate or mitigate steel pipe in industry, thereby guarantees that pipeline section flow path or bend pipe presentation quality.
Revolving die half slot is processed into the mode bend pipe of oval groove, because revolving die is elbow radius inner side, material extruding is shunk during processing, the oval groove of revolving die is to preventing steel pipe from losing circle DeGrain.
Be provided with the bend pipe mould of movable mandrel, as shown in figure 1, including revolving die 1, wrinkle resistant piece 2, pattern 3, pressure die 4, movable mandrel 5, during bend pipe, movable mandrel 5 is placed in round steel pipe, is played a supporting role.The mode bend pipe of increase activity mandrel has following deficiency in round steel pipe：1st, production efficiency is relatively low；Round steel pipe causes steel pipe feeding and pickup holding time through mandrel, and it is long to start pipe die debug time during production；2nd, the Mold Making cycle is long, repair frequent；The processing of movable mandrel is cumbersome, and mandrel stress easy fracture, influence bend pipe production.
The content of the invention
The present invention proposes round steel pipe predeformation spindle-less bend pipe mould, does not use movable mandrel during bend pipe, and round steel pipe can also keep the elbow roundness, elbow roundness to have lifting than the circularity of the circularity using movable mandrel bend pipe and revolving die oval groove bend pipe；While pipeline flow path and bend pipe presentation quality is ensured, improve production efficiency, and make it is simple, be hardly damaged.
Essence of the invention is：The semi-circular groove of pressure die and pattern is processed into oval groove, meanwhile, bend pipe mould cancels core component.
Technical scheme is as follows：Round steel pipe predeformation spindle-less bend pipe mould, including revolving die, wrinkle resistant piece, pattern, pressure die, pressure die, pattern and revolving die coordinate, it is to avoid round steel pipe wrinkles；Revolving die is provided with semi-circular recesses, and the setting corresponding with revolving die of pressure die, pattern is correspondingly provided with groove on pressure die and pattern, it is characterised in that：Groove on pressure die and pattern is half elliptic groove, and the bottom of half elliptic groove corresponds to oval long axis direction.
Further restriction to above-mentioned technical proposal：The bottom of half elliptic groove and round steel pipe to be processed it is cylindrical between gap, be predeformation predeformation compensation rate；1）When diameter of steel tube is between Φ 22- Φ 38mm, compensation rate T=0.8-1.1mm；2）When diameter of steel tube is between Φ 38- Φ 45mm, compensation rate T=1.1-1.4mm；3）When diameter of steel tube is between Φ 45- Φ 63mm, compensation rate T=1.4-1.6mm；4）When diameter of steel tube is between Φ 63- Φ 76mm, compensation rate T=1.6-1.8mm.
Beneficial effect：During bend pipe, the half elliptic groove of pressure die and pattern is to round steel pipe crimp, pressure die rotates drive round steel pipe and is bent together while steel pipe is compressed with revolving die, the crimp of half elliptic groove is opposite with the natural deformation direction of crooked position, the crimp of clamping die and pattern is used as the predeformation amount before bending, Contrary compensation is carried out to flexural deformation, steel pipe is maintained circularity.Summary, the present invention makes simple, and the generation of circle phenomenon is lost when can effectively prevent pipe fitting from bending under conditions of not using mandrel, it is to avoid the complicated making processing of mandrel；The disqualification rate of part is reduced to 0.2% by 3%, and production efficiency is high, and at least 15% is improve compared with prior art.Reduce feeding, the duration of pickup, and debugging mould simple and fast.
Brief description of the drawings
Fig. 1 is the structural representation of the existing bend pipe mould for being provided with movable mandrel.
Fig. 2 is the structural representation of round steel pipe predeformation spindle-less bend pipe mould of the present invention.
During Fig. 3 is the present invention, the state diagram that pressure die is used cooperatively with revolving die（Pressure die, revolving die are relative to being enlarged drawing in Fig. 2）.
Specific embodiment
As shown in Figure 2 and Figure 3, the present invention is further described as follows：Round steel pipe predeformation spindle-less bend pipe mould, including revolving die 1, wrinkle resistant piece 2, pattern 3, pressure die 4, wrinkle resistant piece 2 coordinates with revolving die 1, it is to avoid round steel pipe wrinkle；Revolving die 1 is provided with semi-circular recesses 101, pressure die 4, pattern 3 and the corresponding setting of revolving die 1, and groove is correspondingly provided with pressure die, and the groove on pressure die is half elliptic groove 401, and the bottom of half elliptic groove 401 corresponds to oval long axis direction.
As shown in Fig. 2 having gap between the bottom of half elliptic groove 401 and round steel pipe to be processed, the gap is the difference of the major semiaxis with the exradius of round steel pipe to be processed of half elliptic groove 401, and the gap is exactly predeformation compensation rate T.
Groove on pattern 3 is identical with the groove on pressure die 4.
In actual production practice process, by testing repeatedly, predeformation compensation rate T draws value in drawing practical application：
1）When diameter of steel tube is between Φ 22- Φ 38mm, compensation rate T=0.8-1.1mm；
2）When diameter of steel tube is between Φ 38- Φ 45mm, compensation rate T=1.1-1.4mm；
3）When diameter of steel tube is between Φ 45- Φ 63mm, compensation rate T=1.4-1.6mm；
4）When diameter of steel tube is between Φ 63- Φ 76mm, compensation rate T=1.6-1.8mm.
Operation principle of the invention：After artificial feeding, pressure die 4 is clamped near revolving die 1, and pattern 3 is rotated by axle center of the center of revolving die 1 simultaneously near wrinkle resistant piece 2 clamping, revolving die 1 and pressure die 4, and round steel pipe A is bent；In BENDING PROCESS, by round steel pipe crimp, the deformation is offseted the half elliptic groove of pressure die 4 with flexural deformation, realizes that bend pipe loses the predeformation compensation of circle.
Claims (2)
1. round steel pipe predeformation spindle-less bend pipe mould, including revolving die, wrinkle resistant piece, pattern, pressure die, pressure die, pattern and revolving die coordinate, it is to avoid round steel pipe wrinkles；Revolving die is provided with semi-circular recesses, and the setting corresponding with revolving die of pressure die, pattern is correspondingly provided with groove on pressure die and pattern, it is characterised in that：Groove on pressure die and pattern is half elliptic groove, and the bottom of half elliptic groove corresponds to oval long axis direction.
2. round steel pipe predeformation spindle-less bend pipe mould according to claim 1, it is characterised in that：The bottom of half elliptic groove and round steel pipe to be processed it is cylindrical between gap, be the compensation rate of predeformation；1）When diameter of steel tube is between Φ 22- Φ 38mm, compensation rate T=0.8-1.1mm；2）When diameter of steel tube is between Φ 38- Φ 45mm, compensation rate T=1.1-1.4mm；3）When diameter of steel tube is between Φ 45- Φ 63mm, compensation rate T=1.4-1.6mm； 4）When diameter of steel tube is between Φ 63- Φ 76mm, compensation rate T=1.6-1.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510831117.9A CN106734595A (en) | 2015-11-25 | 2015-11-25 | Round steel pipe predeformation spindle-less bend pipe mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510831117.9A CN106734595A (en) | 2015-11-25 | 2015-11-25 | Round steel pipe predeformation spindle-less bend pipe mould |
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| Publication Number | Publication Date |
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| CN106734595A true CN106734595A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510831117.9A Pending CN106734595A (en) | 2015-11-25 | 2015-11-25 | Round steel pipe predeformation spindle-less bend pipe mould |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931349A (en) * | 2017-12-14 | 2018-04-20 | 上海龙阳精密复合铜管有限公司 | A kind of special-shaped plug die of new internal thread forming machine |
| CN109877228A (en) * | 2019-04-10 | 2019-06-14 | 上海兴韬汽车配件有限公司 | It is a kind of for making the mold of bend pipe |
| CN113560385A (en) * | 2021-08-02 | 2021-10-29 | 浙江金马逊机械有限公司 | Elbow pipe equipment and mechanism for inhibiting arc reverse deformation of elbow pipe in variable ellipse guide mode |
-
2015
- 2015-11-25 CN CN201510831117.9A patent/CN106734595A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931349A (en) * | 2017-12-14 | 2018-04-20 | 上海龙阳精密复合铜管有限公司 | A kind of special-shaped plug die of new internal thread forming machine |
| CN109877228A (en) * | 2019-04-10 | 2019-06-14 | 上海兴韬汽车配件有限公司 | It is a kind of for making the mold of bend pipe |
| CN109877228B (en) * | 2019-04-10 | 2024-04-26 | 上海兴韬汽车配件有限公司 | A mould for making return bend |
| CN113560385A (en) * | 2021-08-02 | 2021-10-29 | 浙江金马逊机械有限公司 | Elbow pipe equipment and mechanism for inhibiting arc reverse deformation of elbow pipe in variable ellipse guide mode |
| CN113560385B (en) * | 2021-08-02 | 2023-02-10 | 浙江金马逊智能制造股份有限公司 | Elbow pipe equipment and mechanism for inhibiting arc reverse deformation of elbow pipe in variable ellipse guide mode |
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Application publication date: 20170531 |