CN101121182A - Stretching core head for hollow metal pipe - Google Patents

Stretching core head for hollow metal pipe Download PDF

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Publication number
CN101121182A
CN101121182A CNA200710131435XA CN200710131435A CN101121182A CN 101121182 A CN101121182 A CN 101121182A CN A200710131435X A CNA200710131435X A CN A200710131435XA CN 200710131435 A CN200710131435 A CN 200710131435A CN 101121182 A CN101121182 A CN 101121182A
Authority
CN
China
Prior art keywords
metal pipe
hollow metal
section
core head
stretching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA200710131435XA
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Chinese (zh)
Inventor
王正茂
杨存利
张全叶
董江华
郭正东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GAOXINZHANG COPPER CO Ltd
Original Assignee
GAOXINZHANG COPPER CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GAOXINZHANG COPPER CO Ltd filed Critical GAOXINZHANG COPPER CO Ltd
Priority to CNA200710131435XA priority Critical patent/CN101121182A/en
Publication of CN101121182A publication Critical patent/CN101121182A/en
Pending legal-status Critical Current

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Abstract

The present invention discloses a hollow metal pipe drawing core print comprising a section with fixed diameter and an outlet chamfer section equipped on one side of the section with fixed diameter; the other side of the diameter-fixed section is equipped with a deformed section tilted upwards. The hollow metal pipe drawing core print boasts of excellent lubricating performance which can reduce the friction between the drawn hollow metal pipe and the deformed section of the drawing core print and further reduce the resistance taken by the core print to ensure the size precision of the drawn metal pipe and the quality of the external surface of the drawn metal pipe; in addition, the service life of the drawing core print and the drawing processing efficiency can be increased; the present invention can be used in a wider range; the present invention can be used not only in straightening production of the hollow metal pipe but also in coiling production of the hollow metal pipe.

Description

The stretching core head of hollow metal pipe
Technical field
The present invention relates to a kind of stretching tool that is used for hollow metal pipe, relate in particular to a kind of stretching core head of hollow metal pipe.
Background technology
The stretching core head of traditional hollow metal pipe comprises columniform sizing section, is arranged on the distortion section and the outlet chamfering section of the circular cone of its both sides, and the height of distortion section is lower than sizing section, and the distortion section is downward-sloping.The shortcoming of the stretching core head of this hollow metal pipe is: when the stretching core head of this hollow metal pipe carries out stretched operation, drawn the frictional force between hollow metal pipe and the stretching core head distortion section big, the amount that consumes lubricating oil is big, it is lubricated fully that distortion section and sizing section can not be obtained, cause the dimensional accuracy instability of being drawn hollow metal pipe, surfaces externally and internally of poor quality, because of resistance that stretching core head bore bigger, the phenomenon that stretching core head is broken often appears, cause scrapping of drawing die, and pass reduction is low, and function singleness can only be used for the vertical pulling production of hollow metal pipe.
Summary of the invention
Technical problem to be solved by this invention provides the stretching core head of the less hollow metal pipe of a kind of core print resistance.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: the stretching core head of hollow metal pipe, comprise sizing section, and be arranged on the outlet chamfering section of sizing section one side, also be provided with an acclivitous distortion section at the opposite side of sizing section.
In order better to solve the problems of the technologies described above, described sizing section is the taper shape that certain taper is arranged, and near the distortion section is larger diameter end.
In order better to solve the problems of the technologies described above, also be provided with inlet chamfering section at the opposite side of described distortion section.
Advantage of the present invention is: the stretching core head greasy property of this hollow metal pipe is good, can reduce to be drawn the frictional force between hollow metal pipe and the stretching core head distortion section, thereby reduce the resistance that stretching core head bears, guarantee to be drawn the dimensional accuracy of hollow metal pipe, the quality of hollow metal pipe surfaces externally and internally is drawn in assurance, improve the service life and the stretching pass reduction of stretching core head, the scope of application is wider, and the dish that the vertical pulling production that promptly can be used for hollow metal pipe can be used for hollow metal pipe again draws production.
Description of drawings
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Structural representation when Fig. 1 is used for the vertical pulling operation for the stretching core head of hollow metal pipe of the present invention.
Structural representation when Fig. 2 is used to coil pulling process for the stretching core head of hollow metal pipe of the present invention.
Among the figure: 1, sizing section, 2, outlet chamfering section, 3, the distortion section, 4, inlet chamfering section, 5, the stretching core head of hollow metal pipe, 6, core bar, 7, hollow metal pipe, 8, the stretching external mold, 9, nib.
The specific embodiment
As shown in Figure 1, the stretching core head 5 of hollow metal pipe comprises sizing section 1, is arranged on the outlet chamfering section 2 of sizing section 1 one sides, also is provided with an acclivitous distortion section 3 at the opposite side of sizing section 1.Sizing section 1 is for there being the taper shape of certain taper, and near distortion section 3 is larger diameter end.Opposite side at distortion section 3 also is provided with inlet chamfering section 4.
The course of work that the stretching core head 5 of the hollow metal pipe of said structure is used for vertical pulling is: at first the stretching core head 5 with hollow metal pipe is fixed on core bar 6, in the hollow metal pipe 7 that is shaped on chuck, inject lubricating oil, then hollow metal pipe 7 is through on the core bar 6, the chuck end of hollow metal pipe 7 is put into stretching external mold 8, on the hollow metal pipe 7 of the back 30~60mm of the stretching core head 5 of distance hollow metal pipe, dig a pit, hole, etc., bite chuck on the hollow metal pipe 7 at the uniform velocity to front haulage by the clamp on the stretching dolly then, realize the vertical pulling tube reducing of hollow metal pipe 7 is subtracted the wall operation.Because the opposite side at sizing section 1 also is provided with an acclivitous distortion section 3, opposite side at distortion section 3 also is provided with inlet chamfering section 4, therefore in the process that hollow metal pipe 7 is stretched, lubricating oil can enter into the distortion section 3 and the sizing section 1 of hollow metal pipe 7 very smoothly, reduces the frictional force between the stretching core head 5 of hollow metal pipe 7 and hollow metal pipe.Because sizing section 1 is larger diameter end for the taper shape of certain taper is arranged near what be out of shape section 3, under the situation that does not influence hollow metal pipe 7 dimensional accuracies, has prolonged the service life of the stretching core head 5 of hollow metal pipe.
As shown in Figure 2, the stretching core head 5 of the hollow metal pipe of said structure is used to coil the course of work of drawing: at first dig a pit, hole, etc. in the place about the 70mm of the end of distance hollow metal pipe 7, in hollow metal pipe 7, inject an amount of lubricating oil then, the stretching core head 5 of metal pipe material is put into hollow metal pipe 7, on a system machine, do a chuck, the distance of chuck about the stretching core head 5 front end 20mm of metal pipe material, the hollow metal pipe 7 that makes chuck is sent into stretching external mold 8, at this moment, the stretching core head 5 of metal pipe material just is in the nib 9 of stretching external mold 8, bite chuck on the hollow metal pipe 7 at the uniform velocity to front haulage by the clamp on the stretching dolly then, realize dish pulling process hollow metal pipe 7.

Claims (3)

1. the stretching core head of hollow metal pipe comprises sizing section (1), is arranged on the outlet chamfering section (2) of sizing section (1) one side, it is characterized in that: the opposite side at sizing section (1) also is provided with an acclivitous distortion section (3).
2. according to the stretching core head of the described hollow metal pipe of stating of claim 1, it is characterized in that: described sizing section (1) is for there being the taper shape of certain taper, and near distortion section (3) is larger diameter end.
3. according to the stretching core head of claim 1 or 2 described hollow metal pipes, it is characterized in that: the opposite side at described distortion section (3) also is provided with inlet chamfering section (4).
CNA200710131435XA 2007-08-29 2007-08-29 Stretching core head for hollow metal pipe Pending CN101121182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA200710131435XA CN101121182A (en) 2007-08-29 2007-08-29 Stretching core head for hollow metal pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA200710131435XA CN101121182A (en) 2007-08-29 2007-08-29 Stretching core head for hollow metal pipe

Publications (1)

Publication Number Publication Date
CN101121182A true CN101121182A (en) 2008-02-13

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ID=39083794

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA200710131435XA Pending CN101121182A (en) 2007-08-29 2007-08-29 Stretching core head for hollow metal pipe

Country Status (1)

Country Link
CN (1) CN101121182A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101406905B (en) * 2008-09-17 2010-06-09 浙江伦宝金属管业有限公司 Internal mold for cold-drawing steel tube with small diameter
CN102120227A (en) * 2011-02-22 2011-07-13 浙江健力股份有限公司 Improved cold drawing mould of seamless steel pipe and cold drawing process thereof
CN102513390A (en) * 2011-12-01 2012-06-27 胡顺珍 Short mandrel composite die tube drawing apparatus
CN102728637A (en) * 2012-07-06 2012-10-17 常熟市兰达兰基钢管附件有限公司 Manufacturing process of special shaped steel tube for car brake system
CN103071697A (en) * 2013-01-18 2013-05-01 浙江海亮股份有限公司 Internal peeling core head for hollow tube and drawing device thereof
CN104607484A (en) * 2015-02-06 2015-05-13 厦门华业新电热电器有限公司 Preparation method of aluminum capillary tube of refrigerating system
CN107838210A (en) * 2016-09-20 2018-03-27 常州常宝精特钢管有限公司 A kind of self-positioning travelling internal model of Tube Drawing mould
CN109500118A (en) * 2018-12-26 2019-03-22 重庆龙煜精密铜管有限公司 A kind of anti-jump vehicle floating core head and the anti-jump vehicle method of copper pipe undergauge drawing
CN112211015A (en) * 2020-09-30 2021-01-12 江阴泰阳成索业有限公司 Rotary forging and drawing die for high-efficiency production of surface-contact steel wire rope
CN113396023A (en) * 2019-02-15 2021-09-14 沃尔特·亨里希有限公司 Method and device for axial forming of tubes

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101406905B (en) * 2008-09-17 2010-06-09 浙江伦宝金属管业有限公司 Internal mold for cold-drawing steel tube with small diameter
CN102120227A (en) * 2011-02-22 2011-07-13 浙江健力股份有限公司 Improved cold drawing mould of seamless steel pipe and cold drawing process thereof
CN102513390A (en) * 2011-12-01 2012-06-27 胡顺珍 Short mandrel composite die tube drawing apparatus
CN102728637A (en) * 2012-07-06 2012-10-17 常熟市兰达兰基钢管附件有限公司 Manufacturing process of special shaped steel tube for car brake system
CN103071697A (en) * 2013-01-18 2013-05-01 浙江海亮股份有限公司 Internal peeling core head for hollow tube and drawing device thereof
CN104607484A (en) * 2015-02-06 2015-05-13 厦门华业新电热电器有限公司 Preparation method of aluminum capillary tube of refrigerating system
CN107838210A (en) * 2016-09-20 2018-03-27 常州常宝精特钢管有限公司 A kind of self-positioning travelling internal model of Tube Drawing mould
CN109500118A (en) * 2018-12-26 2019-03-22 重庆龙煜精密铜管有限公司 A kind of anti-jump vehicle floating core head and the anti-jump vehicle method of copper pipe undergauge drawing
CN113396023A (en) * 2019-02-15 2021-09-14 沃尔特·亨里希有限公司 Method and device for axial forming of tubes
CN113396023B (en) * 2019-02-15 2024-04-26 沃尔特·亨里希有限公司 Method and device for axial shaping of tubes
CN112211015A (en) * 2020-09-30 2021-01-12 江阴泰阳成索业有限公司 Rotary forging and drawing die for high-efficiency production of surface-contact steel wire rope

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