CN201271655Y - Stretching auxiliary mechanism of drawing machine - Google Patents
Stretching auxiliary mechanism of drawing machine Download PDFInfo
- Publication number
- CN201271655Y CN201271655Y CNU2008201520037U CN200820152003U CN201271655Y CN 201271655 Y CN201271655 Y CN 201271655Y CN U2008201520037 U CNU2008201520037 U CN U2008201520037U CN 200820152003 U CN200820152003 U CN 200820152003U CN 201271655 Y CN201271655 Y CN 201271655Y
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- China
- Prior art keywords
- control wheel
- pipe
- core bar
- mold
- guiding control
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Abstract
The utility model relates to an auxiliary stretching auxiliary mechanism of machine drawing devices, comprising an external mold (5), a core bar (7), a tube blank (10) and an internal mold (60), as well as more than one guiding control wheel (70) which is arranged between the core bar (7) and the internal mold (60); the guiding control wheel (70) which passes through and is fixed on the core bar (7) is separated at equal distance by an intermediate distance sleeve (80); the guiding-in direction of the guiding control wheel (70) is perpendicular with the end face of the mold. The utility model has the following benefits: when the tube blank is led into the mold, all parts of the tube wall are stressed evenly, thus avoiding the uneven wall thickness existed in the prior art, improving the rate of the finished product and the product quality of the steel tube and increasing the economic benefits of the enterprise.
Description
Technical field
The utility model relates to a kind of machine drawing equipment, relates in particular to the drawing mechanism in a kind of machine drawing equipment.
Background technology
Machine drawing claims drawbench again, is mainly used in the draw production of seamless steel pipe.Machine drawing is mainly formed (as shown in Figure 1) by following parts: chain 1, drag hook 2, jaw dolly 3, clamp 4, external mold 5, external mold be fixedly wall 9, pipe 10 of wall 6, internal mold and internal mold fixed screw (not shown), core bar 7, core bar fixed screw 8, core bar fixedly; Also has power-equipment in addition: motor 11, speed changer 12; Console 13.
Talk about from the material structure state of stainless-steel seamless pipe, all metals are all arranged in order by crystal grain and are formed, and in fact production technology of steel tube is exactly deformation processing, and in the deformation technique process, metal structure crystal grain can deform.Crystal grain is subjected to the influence of external force by original square or polygon cube, and is elongated along machine direction, and make it recover original form through solution treatment.
The power of all directions that it is suffered is depended in the crystal grain distortion that is produced by processing, and the suffered power of steel pipe pipe crystal grain is applied by mould, and it is formed (as shown in Figure 2) by the power of three aspects: the inside power (A) of one, being given it by external mold; Two, the outside power (B) that gives by internal mold; Three, the machine drawing jaw dolly power forward (C) of giving.Stressed on these three directions is out of shape it within the limits prescribed, to reach needed process.
Under the situation of at present intrinsic machine drawing structure, in the steel pipe process of tube plug drawing mill, be very easy to occur following phenomenon: because the size of internal mold is significantly smaller than the endoporus of pipe, so the angle of pipe when importing mould can not be vertical with the end face of mould, make the pipe can not producing balanced forces under the effect of interior external mold, crystal grain flows to stressed less one side with the importing of angle, thereby has produced the monolateral phenomenon of wall thickness.
Summary of the invention
The utility model technical issues that need to address have provided the stretching auxiliary body in a kind of machine drawing equipment, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: external mold, core bar, pipe, internal mold; Also comprise at least more than one, the control wheel of the guiding between core bar and internal mold; Described guiding control wheel pass and fixed in position on core bar, between the guiding control wheel with in the spacer sleeve spaced at equal intervals; The importing orientation angle of described guiding control wheel and the end face of mould are vertical.
Compared with prior art, the beneficial effects of the utility model are: make pipe when importing mould, make tube wall stressed evenly everywhere, thereby the wall unevenness of having avoided being easy to generate under the prior art is spared phenomenon; Thereby improve the yield rate and the product quality of steel pipe, improve economic benefit of enterprises.
Description of drawings
Fig. 1 is a prior art Medium drawing mach ine equipment structure chart;
Fig. 2 is a drawing mechanism structure chart among Fig. 1;
Fig. 3 is the utility model structure chart;
Fig. 4 is a guiding control rolling hitch composition among Fig. 3;
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:
By Fig. 3, Fig. 4 as seen: the utility model comprises: external mold 5, core bar 7, pipe 10, internal mold 60; Also comprise at least more than one, the control wheel of the guiding between core bar 7 and internal mold 60 70; Described guiding control wheel 70 pass and fixed in position on core bar 7, between the guiding control wheel 70 with in spacer sleeve 80 spaced at equal intervals; The importing orientation angle of described guiding control wheel 70 and the end face of mould are vertical;
Described at least more than one the quantity of guiding control wheel 70 is 3;
Described the 3rd guiding control wheel 70 and internal mold spacing are 3 ~ 5 times of pipe 10 diameters, and the distance between the guiding control wheel 70 also is 3 ~ 5 times of pipe 10 diameters.
Guiding control wheel is for when pipe is imported into mould, keeps the importing orientation angle of pipe and the vertical device of end face of mould, makes the pipe can producing balanced forces under the effect of interior external mold.
For when importing pipe, make pipe producing balanced forces under the effect of interior external mold, the end face that will control internal mold end face and pipe exactly keeps absolute vertical.The utility model is exactly to control the perpendicularity of internal mold in pipe by force by the endoporus of pipe, and the control blank imports direction and angle, and it is vertical with the pipe end face to make internal mold remain end face in working order, and homogeneous deformation is stressed by force to make all crystal grain.
Guiding control wheel profile of the present utility model is 360 ° a cylinder, length dimension is the outside dimension of steel pipe pipe, the diameter of control wheel is pipe diameter of bore-1 ~ 3mm, this distance is the space that pipe endoporus lubricating layer passes through, the interstitial hole of control wheel is diameter of mandrel+0.10 ~ 0.20mm, for fear of the generation of stress, the utility model has adopted isolates fixing mode, that is to say to use spacer with each control wheel spaced at equal intervals on core bar.The installation site of control wheel on core bar can be calculated by following formula: control wheel and internal mold spacing are pipe diameter * (3 ~ 5), and the distance of control wheel and other control wheels is spacings of pipe diameter * (3 ~ 5).And the quantity of control wheel can decide according to the size of pipe diameter, and the diameter of pipe is big more, and control wheel number of elements is many more, and normal conditions use three control wheels to be effective.
Installation procedure of the present utility model is: at first be the length of reserving spacer according to the number of elements that the control wheel is installed, the spacer of packing into earlier, reinstall a control wheel, reinstall middle spacer sleeve ... after reaching the number of elements of regulation, the control of packing into is taken turns and internal mold spacing spacer, reinstalls jack panel 90 (as shown in Figure 3) on the internal mold.
That the material of control wheel uses is GCr15 or GCr15SiMn.Processing method is to arrive surface smoothness 9 μ m with 200# emery wheel rubbing down after the modulation treatment, 45 is opened so that import the pipe endoporus in two ends, the fineness at two angles is wanted rubbing down to 9 μ m equally, the size of interlayer is that moving of directly organizational controls wheel gets final product, just control wheel interstitial hole size is an interlayer interstitial hole size, external diameter is 1/2 of a control wheel, and length is to decide according to the interval of control wheel.
Though the utility model aims at the stainless-steel seamless pipe design, it is equally applicable to the machining deformation of the metal tube of various materials.
Claims (3)
1. the stretching auxiliary body in the machine drawing equipment comprises: external mold (5), core bar (7), pipe (10), internal mold (60); It is characterized in that: also comprise at least more than one, the control wheel of the guiding between core bar (7) and internal mold (60) (70); Described guiding control wheel (70) pass and fixed in position on core bar (7), between the guiding control wheel (70) with in spacer sleeve (80) spaced at equal intervals; The importing orientation angle of described guiding control wheel (70) and the end face of mould are vertical.
2. the stretching auxiliary body in the machine drawing equipment according to claim 1 is characterized in that: described at least more than one the quantity of guiding control wheel (70) is 3.
3. the stretching auxiliary body in the machine drawing equipment according to claim 1 and 2, it is characterized in that: described the 3rd guiding control wheel (70) and internal mold spacing are 3 ~ 5 times of pipe (10) diameter, and the distance between the guiding control wheel (70) also is 3 ~ 5 times of pipe (10) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201520037U CN201271655Y (en) | 2008-08-15 | 2008-08-15 | Stretching auxiliary mechanism of drawing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201520037U CN201271655Y (en) | 2008-08-15 | 2008-08-15 | Stretching auxiliary mechanism of drawing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201271655Y true CN201271655Y (en) | 2009-07-15 |
Family
ID=40882008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201520037U Expired - Fee Related CN201271655Y (en) | 2008-08-15 | 2008-08-15 | Stretching auxiliary mechanism of drawing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201271655Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764781A (en) * | 2012-07-30 | 2012-11-07 | 中材科技（南通）有限公司 | Seamless steel tube cold-drawing machine with tracker |
| CN104084437A (en) * | 2014-06-17 | 2014-10-08 | 北京交通大学长三角研究院 | Wire-measuring apparatus for large-aperture diamond drawing die |
| CN104384227A (en) * | 2014-11-06 | 2015-03-04 | 芜湖鑫力管道技术有限公司 | One-step inner molding die tooling assembly for composite copper pipe |
| CN112058930A (en) * | 2020-08-18 | 2020-12-11 | 浙江大学 | A terrace die and supporting production facility structure for drawing eccentric blank pipe |
-
2008
- 2008-08-15 CN CNU2008201520037U patent/CN201271655Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764781A (en) * | 2012-07-30 | 2012-11-07 | 中材科技（南通）有限公司 | Seamless steel tube cold-drawing machine with tracker |
| CN104084437A (en) * | 2014-06-17 | 2014-10-08 | 北京交通大学长三角研究院 | Wire-measuring apparatus for large-aperture diamond drawing die |
| CN104384227A (en) * | 2014-11-06 | 2015-03-04 | 芜湖鑫力管道技术有限公司 | One-step inner molding die tooling assembly for composite copper pipe |
| CN112058930A (en) * | 2020-08-18 | 2020-12-11 | 浙江大学 | A terrace die and supporting production facility structure for drawing eccentric blank pipe |
| CN112058930B (en) * | 2020-08-18 | 2021-06-29 | 浙江大学 | A terrace die and supporting production facility structure for drawing eccentric blank pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20090915 |