CN105312376A - Cold pressing and bending forming die of large-diameter pipe - Google Patents
Cold pressing and bending forming die of large-diameter pipe Download PDFInfo
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- CN105312376A CN105312376A CN201510864623.8A CN201510864623A CN105312376A CN 105312376 A CN105312376 A CN 105312376A CN 201510864623 A CN201510864623 A CN 201510864623A CN 105312376 A CN105312376 A CN 105312376A
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Abstract
The invention discloses a cold pressing and bending forming die of a large-diameter pipe. The cold pressing and bending forming die of the large-diameter pipe comprises an upper die, two lower dies and a base, wherein the two lower dies have the same structure; guide strips are arranged on the base in the length direction; lower die seats are positioned on the corresponding guide strips on the base; one lower die is fixed to the base, and the two lower dies are connected through a lead screw; after the space between the two lower dies is adjusted, the two lower dies are locked; two ends of the pipe to be bent are in contact with corresponding balls in arc-shaped grooves of lower die sections; the upper end of an upper die seat is connected with a pressing machine, and arc-shaped grooves in upper die sections at the lower end of the upper die seat are in contact with the pipe to be bent; the total arc length of the arc-shaped grooves in the upper and lower die sections is more than the semi-cycle arc length of the pipe to be bent. According to the cold pressing and bending forming die of the large-diameter pipe, the springback value can be changed by adjusting the distance and a pressure value; balls are embedded in the lower die sections, thus the pipe can axially move along an arc shape while being bent, and as a result, the deformation of the section of the pipe can be inhibited; the total arc length of the arc-shaped grooves in the upper die section and the lower die sections after covering is more than the semi-cycle arc length of the pipe to be bent; an surface, covering the pipe to be bent, of an inwards-concaved die, can be increased, and thus the degree of crushing and wrinkling of the pipe during bending can be decreased.
Description
Technical field
The present invention relates to tubing to cold pressing brake forming equipment, especially relate to a kind of major diameter tubing and to cold pressing brake forming mould.
Background technology
The not only extensive use in gas, liquid transporting of the various bend pipe parts of development along with modern industry, also more and more extensive in department's application such as machinery, chemical industry, nuclear power, modern ultrahigh layer building systems, the large diameter steel pipe adopting specification to be 800mm × more than 30mm in a large number for modern ultrahigh layer building body steel megastructure.Although have much for the mould of bending pipes and method now, the overwhelming majority is only applicable to narrow tube, rarely has see for the mould of major diameter bending pipes and method.At present heating in medium frequency bending method and bikini is only had to cold pressing bending method for major diameter bending pipes common method, but because the bending least radius of heating in medium frequency bending method must by more than 5 times of curved tube outer diameter, and tubing has in heating place and cooling place and significantly shrivels the shortcomings such as wrinkling after adopting heating in medium frequency bending, so bikini is colded pressing, bending method more often adopts in bending pipes.
Bikini bending method composition of colding pressing is a counterdie being arranged on two indents that indent patrix on press and two ends are placed, and drives patrix to press down to realize bending pipes shaping by press.Existing bikini is colded pressing bending mould, mostly press down indent arc patrix by two fixing indent curved support counterdies and one and form, and the arc length of die is generally less than or equals by the unitary mould of the half cycle of bend pipe material.The deficiency of this mould is: 1) two counterdies are fixed, and the adjustment of counterdie spacing is inconvenient, can only regulate, bend pipe can be caused so easily to occur impression, impression when bending rebound quantity is colded pressing in adjustment by regulating force value; 2) during die cambered surface inclusion bending pipes, tubing can not arcuately move axially, and the tubing after bending easily produces cross section deformation; 3) the inclusion face of cambered surface to tubing of die is less than or equal to half cycle, is easy to cause bending tubing to shrivel so wrinkling.
Summary of the invention
In order to overcome the deficiency that background technology exists, a kind of major diameter tubing is the object of the present invention is to provide to cold pressing brake forming mould, can be used for bending pipes, mobile finishing of bending and bend, bend the tubing of caliber scope at 500mm ~ 1500mm, realize counterdie spacing adjustable, during bending pipes, bend pipe can not shrivel wrinkling, and tubing arcuately can move axially and can bend out bending quality is good, precision is high tubing and to cold pressing brake forming mould.
In order to reach foregoing invention object, the technical solution used in the present invention is:
The present invention includes patrix, two counterdies that structure is identical and base; A counterdie is equipped with at base two ends respectively, and the upper bolster upper end of patrix is connected with press, and the upper bolster lower end arc groove of patrix contacts with by bend pipe material, is contacted respectively by bend pipe material two ends with the upper bolster upper end arc groove of respective counterdie.
Patrix: comprise upper bolster, two groups of multi-disc patrix mould lobes that structure is identical, many patrix bearing pins and two patrix long pin shaft; The side of two groups of multi-disc patrix mould lobes has arc groove, two groups of multi-disc patrix mould lobes with many patrix pinned connection together, the opposite side of two groups of multi-disc patrix mould lobes embeds in the groove separately of both sides, upper bolster lower end respectively, by respective patrix long pin shaft and upper bolster hinged, upper bolster upper end is connected with press;
Two counterdies: include multiple ball, many counterdie bearing pins, two groups of multi-disc counterdie mould lobes that structure is identical, two counterdie long pin shaft, lower bolster, die shoe, axle, many springs and two pieces of latch plates; The side of two groups of multi-disc counterdie mould lobes has arc groove, multiple ball is all embedded with in the arc groove of every sheet counterdie mould lobe, two groups of multi-disc counterdie mould lobes with many patrix pinned connection together, the opposite side of two groups of multi-disc counterdie mould lobes embeds in the groove separately of both sides, lower bolster upper end respectively, by respective counterdie long pin shaft and lower bolster hinged, the lower end of lower bolster by axle and die shoe hinged, two pieces of latch plates are fixed on counterdie mould lobe group bottom surface, both sides, contact with two pieces of latch plates in the spring groove that many springs are placed on lower bolster, make counterdie mould lobe group energy automatic open-close;
Base has many gib blocks along its length, the die shoe of two counterdies is placed on many gib blocks of the both sides of base respectively, a counterdie is fixed on base, two counterdies are connected by leading screw, regulated the spacing of two counterdies by the rotation of leading screw, leading screw has locking device to regulate spacing finger lock.
Total arc length of the arc groove of described patrix and the arc groove of counterdie is all greater than by the half cycle arc length of bend pipe material.
The sheet number of two groups of multi-disc patrix mould lobes of described patrix is identical.
The sheet number of two groups of multi-disc counterdie mould lobes of described two counterdies is identical.
The beneficial effect that the present invention has is:
1) a counterdie base and leading screw and retaining mechanism is designed, counterdie is placed on base, two counterdies can distance as required between regulated quantity two counterdie, this calibration result being equivalent to produce when bending tubing with identical bending force is different, namely can change springback capacity by adjustable range and force value.And when carrying out tubing tip bend, distance adjustment between two counterdies smaller, material can be saved, when carrying out mid portion and bending, the distance between two counterdies can be regulated larger, and such distance value is large, and force value just can be turned down relatively, curved tube surfaces quality out good, be not easy to occur impression and impression phenomenon.
2), when designing counterdie, counterdie inner concave is designed to the structure that can slide, namely in counterdie mould lobe, inlays ball, like this when carrying out bending pipes, tubing can arcuately move axially, and can suppress tubing cross section deformation.
3) upper and lower mould designed is made up of more than two lobes movable inclusion structure, and the total arc length of inclusion is greater than by bend pipe material half cycle arc length, and design can strengthen interior die to by the inclusion face of bend pipe material like this, shrivels wrinkling degree to tubing when reducing bend pipe.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present invention.
Fig. 2 is upper die structure schematic diagram of the present invention.
Fig. 3 is lower die structure schematic diagram of the present invention.
Fig. 4 is lower die structure partial sectional view of the present invention.
In figure: 1, patrix, 2, counterdie, 3, base, 4, upper bolster, 5, patrix mould lobe, 6, patrix bearing pin, 7, patrix long pin shaft, 8, ball, 9, counterdie bearing pin, 10, counterdie mould lobe, 11, counterdie long pin shaft, 12, lower bolster, 13, die shoe, 14, axle, 15, spring, 16, latch plate, 17, by bend pipe material, 18, leading screw.
Detailed description of the invention
Further illustrate do the present invention below in conjunction with drawings and Examples.
As shown in Figure 1, the present invention includes patrix 1, two counterdies 2 that structure is identical and base 3; A counterdie 2 is equipped with at base 3 two ends respectively, and upper bolster 4 upper end of patrix 1 is connected with press, and the upper bolster 4 lower end arc groove of patrix 1 contacts with by bend pipe material 18, is contacted respectively by bend pipe material 18 two ends with the upper bolster 4 upper end arc groove of respective counterdie 2.
As shown in Figure 1, patrix 1: comprise upper bolster 4, two groups of multi-disc patrix mould lobes 5 that structure is identical, many patrix bearing pins 6 and two patrix long pin shaft 7; The side of two groups of multi-disc patrix mould lobes 5 has arc groove, two groups of multi-disc patrix mould lobes 5 link together with many patrix bearing pins 6, the opposite side of two groups of multi-disc patrix mould lobes 5 embeds in the groove separately of both sides, upper bolster 4 lower end respectively, hinged with upper bolster 4 by respective patrix long pin shaft 7, upper bolster 4 upper end is connected with press.
As shown in Figure 3, Figure 4, two counterdies 2: include multiple ball 8, many counterdie bearing pins 9, two groups of multi-disc counterdie mould lobes, 10, two counterdie long pin shaft 11 that structure is identical, lower bolster 12, die shoe 13, axle 14, many springs 15 and two pieces of latch plates 16, the side of two groups of multi-disc counterdie mould lobes 10 has arc groove, multiple ball 8 is all embedded with in the arc groove of every sheet counterdie mould lobe 10, two groups of multi-disc counterdie mould lobes 10 link together with many patrix bearing pins 6, the opposite side of two groups of multi-disc counterdie mould lobes 10 embeds in the groove separately of both sides, lower bolster 12 upper end respectively, hinged with lower bolster 12 by respective counterdie long pin shaft 11, the lower end of lower bolster 12 is hinged by axle 14 and die shoe 13, two pieces of latch plates 16 are fixed on counterdie mould lobe group bottom surface, both sides, contact with two pieces of latch plates 16 in the spring groove that many springs 15 are placed on lower bolster 12, make counterdie mould lobe group energy automatic open-close.
As shown in Figure 1, base 3 has many gib blocks along its length, the die shoe 13 of two counterdies 2 is placed on many gib blocks of the both sides of base 3 respectively, a counterdie 2 is fixing on the base 3, two counterdies 2 are connected by leading screw 18, regulated the spacing of two counterdies 2 by the rotation of leading screw 18, leading screw 18 has locking device to regulate spacing finger lock.
Total arc length of the arc groove of described patrix mould lobe and the arc groove of counterdie mould lobe is all greater than by the half cycle arc length of bend pipe material 18.
The sheet number of two groups of multi-disc patrix mould lobes 5 of described patrix 1 is identical, and the sheet number of two groups of multi-disc patrix mould lobes 5 can set as required.
The sheet number of two groups of multi-disc counterdie mould lobes 10 of described two counterdies 2 is identical, and the sheet number of two groups of multi-disc counterdie mould lobes 10 can set as required.
operation principle of the present invention:
Patrix 1 is connected with press by upper bolster 4, because two mould lobe groups of Action of Gravity Field patrix are foldings in non-duty, the effect of the automatic open-close mechanism that the template group of counterdie is made up of spring 15 and latch plate 16, also being folding condition not placing during bend pipe material 17, being convenient to be placed by bend pipe material 17.A counterdie 2 is fixed by screws on base 3, and another counterdie 2 is fixed by the self-locking mechanism of leading screw 18.
When being placed on two counterdies 2 by bend pipe material 17, the mould lobe group of two counterdies closes under pressure, is greater than tubing half cycle inclusion by bend pipe material 17, and bending tubing is not easy to cause to shrivel wrinkling.Patrix 1 presses down under the effect of press, when patrix mould lobe group with slowly contacted by bend pipe material 17 after closed, be greater than tubing half cycle inclusion tubing, bending tubing is not easy to cause to shrivel wrinkling.Patrix 1 continues to press down, bending pipes, two lower bolsters 12 are due to hinged by axle 14 and die shoe 13 simultaneously, inwardly can rotate along with the distortion of tubing when bending pipes, and owing to having ball 8 in counterdie mould lobe 10 groove, by bend pipe material 17 stressed bending time can arcuately move axially, being not easy by bend pipe material 17 after bending produces cross section deformation.
After bending, resilience is unavoidable, counterdie of the present invention can pass through the distance of leading screw 18 as required between regulated quantity two counterdie, this calibration result being equivalent to produce when bending tubing with identical bending force is different, namely springback capacity can be changed by regulating the Distance geometry force value between two counterdies, and when carrying out tubing tip bend, distance adjustment between two counterdies smaller, material can be saved, when carrying out mid portion and bending, the distance between two counterdies can be regulated larger, such distance value is large, force value just can be turned down relatively, curved tube surfaces quality out good, be not easy to occur impression and impression phenomenon.
Claims (4)
1. major diameter tubing is colded pressing a brake forming mould, comprises patrix (1), two counterdies (2) that structure is identical and base (3); A counterdie (2) is equipped with at base (3) two ends respectively, upper bolster (4) upper end of patrix (1) is connected with press, upper bolster (4) the lower end arc groove of patrix (1) contacts with by bend pipe material (18), is contacted respectively by bend pipe material (18) two ends with upper bolster (4) the upper end arc groove of respective counterdie (2); It is characterized in that:
Patrix (1): comprise upper bolster (4), two groups of multi-disc patrix moulds lobe (5) that structure is identical, many patrix bearing pins (6) and two patrix long pin shaft (7); The side of two groups of multi-disc patrix moulds lobe (5) has arc groove, two groups of multi-disc patrix moulds lobe (5) link together with many patrix bearing pins (6), the opposite side of two groups of multi-disc patrix moulds lobe (5) embeds in the groove separately of upper bolster (4) both sides, lower end respectively, hinged by respective patrix long pin shaft (7) and upper bolster (4), upper bolster (4) upper end is connected with press;
Two counterdies (2): include multiple ball (8), many counterdie bearing pins (9), two groups of multi-disc counterdie moulds lobe (10) that structure is identical, two counterdie long pin shaft (11), lower bolster (12), die shoe (13), axle (14), many springs (15) and two pieces of latch plates (16), the side of two groups of multi-disc counterdie moulds lobe (10) has arc groove, multiple ball (8) is all embedded with in the arc groove of every sheet counterdie mould lobe (10), two groups of multi-disc counterdie moulds lobe (10) link together with many patrix bearing pins (6), the opposite side of two groups of multi-disc counterdie moulds lobe (10) embeds in the groove separately of lower bolster (12) both sides, upper end respectively, hinged by respective counterdie long pin shaft (11) and lower bolster (12), the lower end of lower bolster (12) is hinged by axle (14) and die shoe (13), two pieces of latch plates (16) are fixed on counterdie mould lobe group bottom surface, both sides, contact with two pieces of latch plates (16) in the spring groove that many springs (15) are placed on lower bolster (12), make counterdie mould lobe group energy automatic open-close,
Base (3) has many gib blocks along its length, the die shoe (13) of two counterdies (2) is placed on many gib blocks of the both sides of base (3) respectively, a counterdie (2) is fixed on base (3), two counterdies (2) are connected by leading screw (18), regulated the spacing of two counterdies (2) by the rotation of leading screw (18), leading screw (18) has locking device to regulate spacing finger lock.
2. a kind of major diameter tubing according to claim 1 is colded pressing brake forming mould, it is characterized in that: total arc length of the arc groove of described patrix mould lobe and the arc groove of counterdie mould lobe is all greater than by the half cycle arc length of bend pipe material (18).
3. a kind of major diameter tubing according to claim 1 is colded pressing brake forming mould, it is characterized in that: the sheet number of two groups of multi-disc patrix moulds lobe (5) of described patrix (1) is identical.
4. a kind of major diameter tubing according to claim 1 is colded pressing brake forming mould, it is characterized in that: the sheet number of two groups of multi-disc counterdie moulds lobe (10) of described two counterdies (2) is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510864623.8A CN105312376A (en) | 2015-12-01 | 2015-12-01 | Cold pressing and bending forming die of large-diameter pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510864623.8A CN105312376A (en) | 2015-12-01 | 2015-12-01 | Cold pressing and bending forming die of large-diameter pipe |
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| CN105312376A true CN105312376A (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510864623.8A Pending CN105312376A (en) | 2015-12-01 | 2015-12-01 | Cold pressing and bending forming die of large-diameter pipe |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335701A (en) * | 2017-08-20 | 2017-11-10 | 芜湖通全科技有限公司 | Formation of tubes mould |
| CN107511414A (en) * | 2017-08-29 | 2017-12-26 | 张家港凯航通力船用设备有限公司 | A kind of square steel bending press |
| CN108188224A (en) * | 2017-12-28 | 2018-06-22 | 安徽宏实光机电高科有限公司 | A kind of cold compartment of refrigerator cooling tube bending clamp |
| CN108262379A (en) * | 2018-01-10 | 2018-07-10 | 宁波鑫神泽汽车零部件有限公司 | Plate-shaped automobile part bending apparatus |
| CN108339874A (en) * | 2018-01-18 | 2018-07-31 | 浙江大学 | A kind of pipe fitting bending forming assist device of multiple spot change propulsive |
| CN108480440A (en) * | 2018-04-27 | 2018-09-04 | 浙江大学 | A kind of free curve bending machine of tube diameter variable |
| CN108994127A (en) * | 2018-09-12 | 2018-12-14 | 襄阳福康达机械有限公司 | Bending machine is used in a kind of processing of stainless steel tube |
| CN111940606A (en) * | 2020-08-10 | 2020-11-17 | 中冶南方(武汉)重工制造有限公司 | Assembled return bend moulding-die convenient to adjust |
| CN112845740A (en) * | 2020-12-31 | 2021-05-28 | 成都市松川金属材料有限公司 | Bending processing device and method for special-shaped piece |
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| CN204338620U (en) * | 2014-12-19 | 2015-05-20 | 安徽马钢比亚西钢筋焊网有限公司 | A kind of specimen supporting device for cold bending test |
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| JP2005279745A (en) * | 2004-03-30 | 2005-10-13 | Tomita Seisakusho:Kk | Method for bending large diameter steel pipe |
| CN101147942A (en) * | 2007-10-31 | 2008-03-26 | 江苏沪宁钢机股份有限公司 | Round pipe steel component arc clod curving forming mould |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335701A (en) * | 2017-08-20 | 2017-11-10 | 芜湖通全科技有限公司 | Formation of tubes mould |
| CN107511414A (en) * | 2017-08-29 | 2017-12-26 | 张家港凯航通力船用设备有限公司 | A kind of square steel bending press |
| CN108188224A (en) * | 2017-12-28 | 2018-06-22 | 安徽宏实光机电高科有限公司 | A kind of cold compartment of refrigerator cooling tube bending clamp |
| CN108188224B (en) * | 2017-12-28 | 2019-11-15 | 安徽宏实光机电高科有限公司 | A kind of cold compartment of refrigerator cooling tube bending clamp |
| CN108262379B (en) * | 2018-01-10 | 2019-06-07 | 宁波鑫神泽汽车零部件有限公司 | Plate-shaped automobile part bending apparatus |
| CN108262379A (en) * | 2018-01-10 | 2018-07-10 | 宁波鑫神泽汽车零部件有限公司 | Plate-shaped automobile part bending apparatus |
| CN108339874A (en) * | 2018-01-18 | 2018-07-31 | 浙江大学 | A kind of pipe fitting bending forming assist device of multiple spot change propulsive |
| CN108339874B (en) * | 2018-01-18 | 2019-03-29 | 浙江大学 | A kind of pipe fitting bending forming assist device of multiple spot change propulsive |
| CN108480440B (en) * | 2018-04-27 | 2019-07-09 | 浙江大学 | A kind of free curve bending machine of tube diameter variable |
| CN108480440A (en) * | 2018-04-27 | 2018-09-04 | 浙江大学 | A kind of free curve bending machine of tube diameter variable |
| CN108994127A (en) * | 2018-09-12 | 2018-12-14 | 襄阳福康达机械有限公司 | Bending machine is used in a kind of processing of stainless steel tube |
| CN111940606A (en) * | 2020-08-10 | 2020-11-17 | 中冶南方(武汉)重工制造有限公司 | Assembled return bend moulding-die convenient to adjust |
| CN112845740A (en) * | 2020-12-31 | 2021-05-28 | 成都市松川金属材料有限公司 | Bending processing device and method for special-shaped piece |
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Application publication date: 20160210 |
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