CN103464591B - A kind of steel pipe throat mould - Google Patents

A kind of steel pipe throat mould Download PDF

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Publication number
CN103464591B
CN103464591B CN201310408181.7A CN201310408181A CN103464591B CN 103464591 B CN103464591 B CN 103464591B CN 201310408181 A CN201310408181 A CN 201310408181A CN 103464591 B CN103464591 B CN 103464591B
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die
reducing
hole
round
reducing die
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CN201310408181.7A
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CN103464591A (en
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程锡铭
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ZHANGJIAGANG FREE-TRADE ZONE HENGLONG STEEL TUBE Co Ltd
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ZHANGJIAGANG FREE-TRADE ZONE HENGLONG STEEL TUBE Co Ltd
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Abstract

The invention discloses a kind of steel pipe throat mould, comprise lower bolster, die holder, core, die shoe, lower reducing die, upper reducing die, reducing die sleeve, fairlead, die cap, upper die component, lower reducing die is installed in reducing die installing hole, upper reducing die to be installed in reducing die installing hole and to be positioned at the top of lower reducing die, lower reducing die and upper reducing die are respectively arranged with the lower round die cavity and upper round die cavity that communicate with one heart, on this, the diameter of round die cavity is greater than the diameter of lower round die cavity, fairlead is against the upper surface of upper reducing die, the aperture of this pilot hole is greater than the aperture of round die cavity, die cap is by die shoe, lower reducing die, upper reducing die, reducing die sleeve and guiding sleeve are pressed in die holder, core and lower round die cavity be concentric to be arranged and top extend in upper round die cavity.This necking die disposablely can carry out secondary reducing to steel pipe, thus saves one reducing operation and necking die, reduces costs, improves efficiency.

Description

A kind of steel pipe throat mould
Technical field
The present invention relates to a kind of mould, refer to a kind of steel pipe throat mould especially.
Background technology
Often need to carry out reducing to the end of steel pipe, to meet different instructions for uses at present.The secondary reducing of special steel tube end part, the steel pipe forming of this secondary reducing adopts two cover necking dies to realize at present, that is, first a reducing is carried out in the end of steel pipe steel pipe on reducing die, then secondary reducing is carried out again in the position of reducing on another little reducing die.The method also exists not foot point: 1. the process employs two cover reducing dies, cost compare is high; 2. the method secondary reducing, complex process, working (machining) efficiency is lower; 3. second time reducing is reducing again on the position of first time reducing, and the surface of first time reducing of damaging in actual mechanical process is blind, thus reduces the quality of steel pipe.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of steel pipe throat mould, and this necking die disposablely can carry out secondary reducing to steel pipe, thus saves one reducing operation and necking die, reduces costs, improves efficiency.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of steel pipe throat mould, comprise lower bolster, die holder, core, die shoe, lower reducing die, upper reducing die, reducing die sleeve, fairlead, die cap, upper die component, described die holder is fixed on lower bolster, this die holder is provided with vertical installation through hole, described die shoe is installed on to be installed in through hole, die shoe is provided with vertical core passing hole, described reducing die sleeve be installed on install in through hole and lower end abutment in the upper surface of die shoe, described reducing die puts and is provided with the reducing die installing hole concentric with core passing hole, described lower reducing die is installed in reducing die installing hole, the lower end of lower reducing die and die shoe against, upper reducing die to be installed in reducing die installing hole and to be positioned at the top of lower reducing die, described lower reducing die and upper reducing die are respectively arranged with the lower round die cavity and upper round die cavity that communicate with one heart, on this, the diameter of round die cavity is greater than the diameter of lower round die cavity, the chamber wall of described lower round die cavity and the chamber wall of upper round die cavity seamlessly transit, described fairlead is against the upper surface of upper reducing die, described fairlead is provided with the pilot hole concentric with upper round die cavity, the aperture of this pilot hole is greater than the aperture of round die cavity, described die cap is fixedly connected with die shoe with the upper end of die holder, lower reducing die, upper reducing die, reducing die sleeve and guiding sleeve are pressed in described die holder, the upper end of this fairlead is exposed outside die cap, described core is fixed on lower bolster, this core and lower round die cavity be concentric to be arranged and the top of core extend in the upper round die cavity of upper reducing die, described upper die component comprises for connecting the cope match-plate pattern that presses down power set and the pressure head for steel pipe being pressed into fairlead, this pressure head is fixed on cope match-plate pattern.
As the preferred scheme of one, described necking die also comprises pusher cover, this pusher cover comprises base portion and sleeve pusher portion, this base portion is installed on lower bolster, sleeve pusher portion is set in the periphery of core and is positioned at the core passing hole of die shoe, the upper end in this sleeve pusher portion and the upper hole of core passing hole, along concordant, described lower bolster are provided with the through hole of the instrument of being convenient to through pushing tow base portion.
As the preferred scheme of one, the installation through hole of described die holder is shoulder hole, the peripheral shape of die shoe and shoulder hole form fit, and the cascaded surface of described shoulder hole supports described die shoe.
As the preferred scheme of one, described pressure head is secured by bolts on connecting rod, and this connecting rod is fixed on upper contiguous block by trim ring bolt, and this contiguous block and cope match-plate pattern bolt are fixed.
As the preferred scheme of one, be provided with packing ring between described upper reducing die and lower reducing die, the endoporus of this packing ring is identical with the aperture of upper round die cavity.
After have employed technique scheme, effect of the present invention is: this necking die utilizes upper reducing die and lower reducing die is disposable carries out twice reducing to steel pipe, saves one reducing operation and mould, improves efficiency and reduce cost.
Again because described necking die also comprises pusher cover, this pusher cover comprises base portion and sleeve pusher portion, this base portion is installed on lower bolster, sleeve pusher portion is set in the periphery of core and is positioned at the core passing hole of die shoe, the upper end in this sleeve pusher portion and the upper hole of core passing hole are along concordant, described lower bolster is provided with the through hole of the instrument of being convenient to through pushing tow base portion, therefore, when after steel pipe forming, instrument can be utilized to head on pusher cover from below to up, pusher cover then upwards runs steel pipe applying power upwards, finally completes the material returned of steel pipe.
Again owing to being provided with packing ring between described upper reducing die and lower reducing die, the endoporus of this packing ring is identical with the aperture of upper round die cavity, like this, just can be adjusted the position of second time reducing, thus can adapt to the steel pipe forming of all size by the thickness changing packing ring.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the exploded perspective view of the embodiment of the present invention;
Fig. 2 is the sectional view of the embodiment of the present invention;
In accompanying drawing: 1. lower bolster; 2. die holder; 21. install through hole; 3. pusher cover; 4. die shoe; 41. core passing hole; 5. reducing die sleeve; 6. core; 7. descend reducing die; 71. times round die cavitys; 8. packing ring; 9. go up reducing die; Circle die cavity on 91.; 10. fairlead; 11. die caps; 12. pressure heads; 13. trim rings; 14. connecting rods; Contiguous block on 15.; 16. cope match-plate patterns.
Detailed description of the invention
Below by specific embodiment, the present invention is described in further detail.
As Fig. 1, shown in 2, a kind of steel pipe throat mould, comprise lower bolster 1, die holder 2, core 6, die shoe 4, lower reducing die 7, upper reducing die 9, reducing die sleeve 5, pusher cover 3, fairlead 10, die cap 11, upper die component, described die holder 2 is fixed on lower bolster 1 by three long spiro nails, this die holder 2 is provided with vertical installation through hole 21, this installation through hole 21 is shoulder hole, described die shoe 4 is installed on to be installed in through hole 21, peripheral shape on die shoe 4 and shoulder hole form fit, the cascaded surface of described shoulder hole supports described die shoe 4, die shoe 4 is provided with vertical core passing hole 41, wherein, the bottom of die shoe 4 is also provided with the counterbore of the base portion being convenient to pusher cover 3, this counterbore is communicated with core passing hole 41, described reducing die sleeve 5 be installed on install in through hole 21 and lower end abutment in the upper surface of die shoe 4, described reducing die sleeve 5 is provided with the reducing die installing hole concentric with core passing hole 41, described lower reducing die 7 is installed in reducing die installing hole, the lower end of lower reducing die 7 and die shoe 4 against, upper reducing die 9 to be installed in reducing die installing hole and to be positioned at the top of lower reducing die 7, described lower reducing die 7 and upper reducing die 9 are respectively arranged with the lower round die cavity 71 and upper round die cavity 91 that communicate with one heart, on this, the diameter of round die cavity 91 is greater than the diameter of lower round die cavity 71, the described chamber wall of lower round die cavity 71 and the chamber wall of upper round die cavity 91 seamlessly transit, preferably, between upper reducing die 9 and lower reducing die 7, packing ring 8 is also installed, the endoporus of this packing ring 8 is with upper round die cavity 91 is concentric and aperture is identical.Against the upper surface of upper reducing die 9 bottom described fairlead 10, described fairlead 10 is provided with the pilot hole concentric with upper round die cavity 91, the aperture of this pilot hole is greater than the aperture of round die cavity 91, described die cap 11 is fixedly connected with the upper end of die holder 2, the upper end of this pilot hole is exposed outside die cap 11, and the flange portion of the lower end of pilot hole covers pressure by die cap 11, like this, this die cap 11 is by die shoe 4, lower reducing die 7, upper reducing die 9, reducing die sleeve 5 and fairlead 10 envelope are pressed in described die holder 2, core 6 is then fixed on lower bolster 1 by core 6 extension bar, this core 6 and lower round die cavity 71 be concentric to be arranged and the top of core 6 extend in the upper round die cavity 91 of upper reducing die 9, lower bolster 1 is provided with a deep gouge, the lower end of core 6 is inserted in deep gouge and can be retrained core 6, described upper die component comprises for connecting the cope match-plate pattern 16 that presses down power set and the pressure head 12 for steel pipe being pressed into fairlead 10, this pressure head 12 is fixed on cope match-plate pattern 16.Described pressure head 12 is secured by bolts on connecting rod 14, and this connecting rod 14 is fixed on upper contiguous block 15 by trim ring 13 bolt, and this contiguous block and cope match-plate pattern 16 bolt are fixed.
The conveniently material returned of necking die, described necking die also comprises pusher cover 3, this pusher cover 3 comprises the base portion and sleeve pusher portion that are interconnected mutually and are integrated, this base portion is installed on lower bolster 1, sleeve pusher portion is set in the periphery of core 6 and is positioned at the core passing hole 41 of die shoe 4, the upper end in this sleeve pusher portion and the upper hole of core passing hole 41, along concordant, described lower bolster 1 are provided with the through hole of the instrument of being convenient to through pushing tow base portion.Type of drive the present invention of this pusher cover 3 does not limit, and the base portion of overlapping 3 with pusher can be utilized in a push rod insertion through hole to contact, then adopt hydraulic-driven or the action of pneumatic actuation push rod.
Operation principle of the present invention is: be placed on by necking die on workbench, by upper die component with press down power set and be connected, such as can by fixing for cope match-plate pattern 16 with on the drift of punch press, steel pipe is inserted in the pilot hole of fairlead 10, aperture due to pilot hole is greater than the aperture of upper round die cavity 91, therefore, when steel pipe end against during upper reducing die 9 and material loading complete, now, upper die component presses down, pressure head 12 press against steel pipe and moves down, steel tube end part undergauge under the effect of upper reducing die 9, core 6 is then inserted in the endoporus of steel pipe and avoids pipe deformation, steel pipe continues to move down, the secondary reducing when steel pipe enters into the lower round die cavity 71 of lower reducing die 7, like this, once press down secondary reducing, until the end of steel pipe and pusher overlap 3 upper-end contact, like this, steel pipe completes with regard to twice reducing, pusher overlaps 3 then by power set upwards pushing tow steel pipe, realize the material returned.

Claims (4)

1. a steel pipe throat mould, it is characterized in that: comprise lower bolster, die holder, core, die shoe, lower reducing die, upper reducing die, reducing die sleeve, fairlead, die cap, upper die component, described die holder is fixed on lower bolster, this die holder is provided with vertical installation through hole, described die shoe is installed on to be installed in through hole, die shoe is provided with vertical core passing hole, described reducing die sleeve be installed on install in through hole and lower end abutment in the upper surface of die shoe, described reducing die puts and is provided with the reducing die installing hole concentric with core passing hole, described lower reducing die is installed in reducing die installing hole, the lower end of lower reducing die and die shoe against, upper reducing die to be installed in reducing die installing hole and to be positioned at the top of lower reducing die, described lower reducing die and upper reducing die are respectively arranged with the lower round die cavity and upper round die cavity that communicate with one heart, on this, the diameter of round die cavity is greater than the diameter of lower round die cavity, the chamber wall of described lower round die cavity and the chamber wall of upper round die cavity seamlessly transit, described fairlead is against the upper surface of upper reducing die, described fairlead is provided with the pilot hole concentric with upper round die cavity, the aperture of this pilot hole is greater than the aperture of round die cavity, described die cap is fixedly connected with die shoe with the upper end of die holder, lower reducing die, upper reducing die, reducing die sleeve and guiding sleeve are pressed in described die holder, the upper end of this fairlead is exposed outside die cap, described core is fixed on lower bolster, this core and lower round die cavity be concentric to be arranged and the top of core extend in the upper round die cavity of upper reducing die, described upper die component comprises for connecting the cope match-plate pattern that presses down power set and the pressure head for steel pipe being pressed into fairlead, this pressure head is fixed on cope match-plate pattern, described necking die also comprises pusher cover, this pusher cover comprises base portion and sleeve pusher portion, this base portion is installed on lower bolster, sleeve pusher portion is set in the periphery of core and is positioned at the core passing hole of die shoe, the upper end in this sleeve pusher portion and the upper hole of core passing hole are along concordant, described lower bolster is provided with the through hole of the instrument of being convenient to through pushing tow base portion.
2. a kind of steel pipe throat mould as claimed in claim 1, is characterized in that: the installation through hole of described die holder is shoulder hole, the peripheral shape of die shoe and shoulder hole form fit, and the cascaded surface of described shoulder hole supports described die shoe.
3. a kind of steel pipe throat mould as claimed in claim 2, is characterized in that: described pressure head is secured by bolts on connecting rod, and this connecting rod is fixed on upper contiguous block by trim ring bolt, and this contiguous block and cope match-plate pattern bolt are fixed.
4. a kind of steel pipe throat mould as described in any one of claims 1 to 3, is characterized in that: be provided with packing ring between described upper reducing die and lower reducing die, and the endoporus of this packing ring is identical with the aperture of upper round die cavity.
CN201310408181.7A 2013-09-09 2013-09-09 A kind of steel pipe throat mould Active CN103464591B (en)

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CN103464591B true CN103464591B (en) 2015-09-02

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104043741B (en) * 2014-06-27 2015-11-25 张家港保税区亚信汽车零部件科技有限公司 A kind of steel pipe throat mould
CN105033082B (en) * 2015-07-31 2017-04-19 江苏鼎宇机械制造股份有限公司 Tube shrinkage mold
CN105170815A (en) * 2015-10-14 2015-12-23 张家港保税区亚鑫精密制管有限公司 Necking-down tool for steel pipe
CN107030216B (en) * 2017-01-07 2018-08-14 百灵气动科技有限公司 A kind of automatic reducing device of pneumatic element

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Publication number Priority date Publication date Assignee Title
US4693109A (en) * 1986-03-04 1987-09-15 Wickes Manufacturing Company Self-aligning tool assembly for die shaping workpieces
CN201052534Y (en) * 2007-04-30 2008-04-30 张家港市合丰机械制造有限公司 Contracted pipe mold
CN201455101U (en) * 2009-07-27 2010-05-12 成都联创精密机械有限公司 Combined necking die
CN202045273U (en) * 2011-04-11 2011-11-23 南阳淅减汽车减振器有限公司 Vibration damper oil storage cylinder double-end necking die
CN202506756U (en) * 2012-03-28 2012-10-31 旭东机械(昆山)有限公司 Pipe necking die assembly
CN203470669U (en) * 2013-09-09 2014-03-12 张家港保税区恒隆钢管有限公司 Steel tube necking die

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Publication number Priority date Publication date Assignee Title
JP2010051990A (en) * 2008-08-27 2010-03-11 Sumikin Kiko Kk Method of manufacturing necked elbow
JP5097757B2 (en) * 2009-09-30 2012-12-12 株式会社三星製作所 Pipe press forming method and apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4693109A (en) * 1986-03-04 1987-09-15 Wickes Manufacturing Company Self-aligning tool assembly for die shaping workpieces
CN201052534Y (en) * 2007-04-30 2008-04-30 张家港市合丰机械制造有限公司 Contracted pipe mold
CN201455101U (en) * 2009-07-27 2010-05-12 成都联创精密机械有限公司 Combined necking die
CN202045273U (en) * 2011-04-11 2011-11-23 南阳淅减汽车减振器有限公司 Vibration damper oil storage cylinder double-end necking die
CN202506756U (en) * 2012-03-28 2012-10-31 旭东机械(昆山)有限公司 Pipe necking die assembly
CN203470669U (en) * 2013-09-09 2014-03-12 张家港保税区恒隆钢管有限公司 Steel tube necking die

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