CN101116878A - Cold drawing accurate steel tube wall thickness adjusting mechanism - Google Patents
Cold drawing accurate steel tube wall thickness adjusting mechanism Download PDFInfo
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- CN101116878A CN101116878A CNA2007100128698A CN200710012869A CN101116878A CN 101116878 A CN101116878 A CN 101116878A CN A2007100128698 A CNA2007100128698 A CN A2007100128698A CN 200710012869 A CN200710012869 A CN 200710012869A CN 101116878 A CN101116878 A CN 101116878A
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- external mold
- wall thickness
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- steel pipes
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Abstract
The invention relates to an adjusting device for the wall thickness of cold drawn precision steel pipes, comprising an external mold and a core mold, wherein, the external mold provided with the core mold is arranged on an intermediate stand post of a drawbench. The invention is characterized in that: a working tape of the external mold is provided with a small cone angle of 2-4 DEG C; the core mold is connected with one end of a tie, the other end of which is connected with a screw; a leptospira is sleeved on the outside of the screw; the external surface of the leptospira is provided with a tooth and connected with an AC servo motor through a gear and a speed reducer. The invention can drive the tie which is connected with the core mold and a spiral breadth on the tail of the tie through the AC servo motor according to DEG C of wear of moulds; the influence of the wear of a compensation mould on the deviation of the wall thickness of the steel pipes is achieved by adjusting the relative positions of the external mold and the core mold on the axle wire, thereby the problem that the wall thickness of the steel pipes is made to be changed due to the wear of the moulds when the cold drawn precision steel pipes are used.
Description
Technical field
The present invention relates to a kind of cold-drawn steel pipe device, particularly relate to a kind of cold drawing accurate steel tube wall thickness adjusting mechanism, belong to the process technology of metal pipe material.
Background technology
As everyone knows, the critical piece of the cold-drawn machine of steel pipe is one to place the mould on the frame, and this mould is made by carbide alloy, pipe by mould by the clamping of tube drawing tonger, under the brute force traction of dynamic power machine, the wall thickness deformation of pipe and reach required size.At present, the wall thickness of cold drawn precision tube relies on the inside and outside cold drawn mould with certain size to control, in continuous use, the wearing and tearing of mould cause the wall thickness change of fished pipe, finally cause waste product or mould to be scrapped, therefore, the mould wear and tear expense of cold-drawn steel pipe accounts for 15～20% of whole manufacturing expense always, and also is one of unsettled key factor of tube quality.In recent years, people had once carried out repeatedly improving to steel pipe cold-drawn machine and parts thereof, and for example, publication number is the Chinese utility model patent of CN88211512, provided a kind of " cold drawn smart pipe mill ", comprised a combination roller tool, split a pipe carriage and a tonger of its left and right sides.Combination roller tool constitutes a hollow turntable shaft, and three rolls are installed on its end plate at interval.When being drawn by the rolling hole of motor-driven when rotation, roll seam shape face one circle, turntable shaft rolls mouth.Be pulled through that roll is affected and rotation by pipe in the journey rolling.Publication number is the Chinese utility model patent of CN2608176, also provided a kind of " steel tubes hydraulic pressure cold-drawn machine ", it includes fuselage, electric hoist, reaches guide rail, and the middle part of hydraulic cylinder piston rod has the material guide hole of tubular, hydraulic jack to be horizontally fixed on the stile of electric hoist; There is the material guide hole corresponding with piston rod at the middle part of hydraulic pressure dish, and the hydraulic pressure dish is fixed on the front end of oil cylinder piston bar, also is evenly distributed with hinge seat at the periphery of hydraulic pressure dish, and drive link is connected with hydraulic pressure dish hinge by hinge seat; Be provided with turning arm being equipped with on the pinch roller frame of pinch roller, pinch roller frame is connected with the riser hinge of stile front end, and the turning arm on the pinch roller frame is connected with the drive link axle.But the problem that causes the wall thickness change of fished pipe when above-mentioned improvement can't solve cold drawn precision tube because of the wearing and tearing of mould.
Summary of the invention
Purpose of the present invention just is to overcome the prior art above shortcomings, promptly solves present mould loss and the easily overproof problem of thickness of steel pipe, has provided a kind of cold drawing accurate steel tube wall thickness adjusting mechanism.This device can by adjusting external mold and the relative position of core on the axis, reach the influence of compensating mold wearing and tearing to the thickness of steel pipe deviation according to the situation of die wear.
The technical solution that the present invention provides is: this cold drawing accurate steel tube wall thickness adjusting mechanism, include external mold, core, wherein external mold is arranged on the mid frame of drawbench, be provided with core in the external mold, be characterized in that the work zone of described external mold is provided with 2 °～4 ° small-angle, described core is connected with an end of pull bar, the other end of this pull bar is connected with screw rod, screw jacket has conveyor screw, and spirochetal outer surface has tooth, and is connected with AC servo motor with reductor by gear.
Because the work zone of external mold is provided with 2 °～4 ° small-angles, external mold is a fixed structure, and core is a bascule, core can with the same axis of external mold on move.When core and external mold on same axis relative position not simultaneously, the clearance distance between core and the external mold work zone will change.Rotate by the control AC servo motor, just can adjust core and the external mold relative position on the axis at any time, thereby the wall thickness of assurance cold-drawn steel pipe is within the design objective of product requirement according to the situation of die wear.
Compared with prior art, beneficial effect of the present invention is: have simple in structure, easy to operate, effect significantly and be convenient to characteristics that existing cold-drawn machine is transformed, not only can reduce the ratio that die cost accounts for the cold-drawn steel pipe manufacturing expense, not more under the situation of mold exchange, 10% adjustment can also be not less than to the thickness of steel pipe, the thickness of steel pipe of different length section can also be on whole steel pipe, adjusted in suitable scope.
Description of drawings:
The present invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a fundamental diagram of the present invention;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is the partial enlarged drawing of Fig. 2.
The specific embodiment
Number in the figure: 1. core, 2. external mold, 3. mid frame, 4. external mold plate washer, 5. pull bar, 6. afer bay, 7. locating ring, 8. conveyor screw, 9. screw rod, 10. gear, 11. reductors, 12. AC servo motors, 13. pulling-rod frames, 14. pull bar tails, 15. pull bar cars, 16. scroll wheels.
Fig. 1 shows that the ring work zone has under 2 °～4 ° small-angle situations in external mold 2, core 1 with external mold 2 axis on during diverse location, clearance distance difference in core 1 and the external mold 2 between the ring work zone, when being in A (position 1), has bigger clearance t 1, when being in B (position 2), has less clearance t2.Along with the variation of this relative position, the thickness of steel pipe that passes in the gap will change.
In Fig. 2, Fig. 3, this cold drawing accurate steel tube wall thickness adjusting mechanism, include external mold 2, core 1, wherein external mold 2 is arranged on the mid frame of drawbench, is provided with core 1 in the external mold 2, the work zone of external mold 2 is provided with 2 °～4 ° small-angle β, described core 1 is connected with an end of pull bar 5, and the other end of this pull bar 5 is connected with screw rod 9, the screw rod 9 outer conveyor screws 8 that are with, the outer surface of conveyor screw 8 has tooth, and is connected with AC servo motor 12 with reductor 11 by gear 10.Core 1 and external mold 2 are along the position of rotation decision by pull bar 5 back-connected screw rods 9 and conveyor screw 8 of the relative position of directions X, the outer surface of conveyor screw 8 has tooth and gear 10 is formed a machine driving pair, when servomotor 12 externally instructs (as computer) control to rotate down, rotate by reductor 11 driven wheels 10, position along directions X conveyor screw 8 will change, under the restriction of plate washer 7, adjust the relative position of core 1 and external mold 2, just can finish the utility model proposes can be according to the situation of die wear, by adjusting external mold and the relative position of core on the axis, reach the goal of the invention of compensating mold wearing and tearing to the influence of thickness of steel pipe deviation.
Claims (1)
1. cold drawing accurate steel tube wall thickness adjusting mechanism, include external mold, core, wherein external mold is arranged on the mid frame of drawbench, be provided with core in the external mold, it is characterized in that the work zone of described external mold is provided with 2 °～4 ° small-angle, described core is connected with an end of pull bar, the other end of this pull bar is connected with screw rod, screw jacket has conveyor screw, and spirochetal outer surface has tooth, and is connected with AC servo motor with reductor by gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100128698A CN100500316C (en) | 2007-09-17 | 2007-09-17 | Cold drawing accurate steel tube wall thickness adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100128698A CN100500316C (en) | 2007-09-17 | 2007-09-17 | Cold drawing accurate steel tube wall thickness adjusting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101116878A true CN101116878A (en) | 2008-02-06 |
| CN100500316C CN100500316C (en) | 2009-06-17 |
Family
ID=39053224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100128698A Expired - Fee Related CN100500316C (en) | 2007-09-17 | 2007-09-17 | Cold drawing accurate steel tube wall thickness adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100500316C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344812A (en) * | 2015-11-13 | 2016-02-24 | 重庆市迈鸿食品有限公司 | Die for improving yield |
| CN105382099A (en) * | 2015-11-13 | 2016-03-09 | 重庆市迈鸿食品有限公司 | Mold structure |
| CN110314951A (en) * | 2019-08-09 | 2019-10-11 | 徐州徐工液压件有限公司 | A kind of high-strength heavy wall drawn tube production method of heavy caliber |
| CN110961906A (en) * | 2019-05-15 | 2020-04-07 | 榆林市大德机械有限公司 | Cold-drawn steel mould correcting unit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI571330B (en) * | 2014-05-20 | 2017-02-21 | A-Pro Tech Co Ltd | Rolling pipe drawing machine and rolling pumping pipe manufacturing method |
-
2007
- 2007-09-17 CN CNB2007100128698A patent/CN100500316C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344812A (en) * | 2015-11-13 | 2016-02-24 | 重庆市迈鸿食品有限公司 | Die for improving yield |
| CN105382099A (en) * | 2015-11-13 | 2016-03-09 | 重庆市迈鸿食品有限公司 | Mold structure |
| CN110961906A (en) * | 2019-05-15 | 2020-04-07 | 榆林市大德机械有限公司 | Cold-drawn steel mould correcting unit |
| CN110314951A (en) * | 2019-08-09 | 2019-10-11 | 徐州徐工液压件有限公司 | A kind of high-strength heavy wall drawn tube production method of heavy caliber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100500316C (en) | 2009-06-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENYANG ZAOTONG MACHINE CO., LTD. Free format text: FORMER OWNER: JIANG XIAODONG Effective date: 20090925 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090925 Address after: Liaoning province Shenyang City Yuhong District Daxing Chen Gujiazi Industrial Park Patentee after: Shenyang Zhaotong Machinery Co.,Ltd. Address before: No. 25, Changqing South Street, Dongling District, Liaoning, Shenyang Patentee before: Jiang Xiaodong |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 110149 Liaoning city of Shenyang province Chen Yuhong District Daxing Gujiazi Industrial Park Patentee after: Shenyang Zhaotong precision shaped tube Co.,Ltd. Address before: 110149 Liaoning city of Shenyang province Chen Yuhong District Daxing Gujiazi Industrial Park Patentee before: Shenyang Zhaotong Machinery Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20210917 |
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| CF01 | Termination of patent right due to non-payment of annual fee |