CN1097362A - A kind of drawn tube necking machine - Google Patents
A kind of drawn tube necking machine Download PDFInfo
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- CN1097362A CN1097362A CN 93112490 CN93112490A CN1097362A CN 1097362 A CN1097362 A CN 1097362A CN 93112490 CN93112490 CN 93112490 CN 93112490 A CN93112490 A CN 93112490A CN 1097362 A CN1097362 A CN 1097362A
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- necking machine
- drawn tube
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- cylinder
- anchor clamps
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Abstract
The present invention relates to the equipment that the cold drawing steel tube pipe end shrink mouth is used.In cold drawing steel tube is produced, in order to make the nib that can be passed the drawbench drawing die by the steel pipe of draw, generally all need carry out " tup " operation, this operation metal loss is big, labour intensity is high and the quality that influences steel pipe internal-surface.The present invention substitutes " tup " with the reducing method.Necking machine of the present invention is formed by auxilliary cylinder, auxilliary cylinder piston, dolly, anchor clamps (clamping body, anchor clamps voussoir, clamp sheet), clamping fixture seat, master cylinder, master cylinder piston and with mechanical mechanism such as the support of dolly chute, nib panel seat and hydraulic system.Adopt the size that this reducing function makes needs reducing with being reached by the steel tube end part of cold-drawn.
Description
The present invention relates to the equipment that the cold-drawn pipe end shrink mouth is used.
In the metallurgical industry, cold drawing steel tube production is after hot rolling extruding and welding tubing to be carried out secondary operations to produce the main method of precision, thin-walled and high-mechanical property product.Cold drawing steel tube has the production efficiency height, changes advantages such as specification convenience, tool making and device structure are simple, and therefore, cold-drawing technology has obtained using more widely.At present, the production process of general drawn tube is that the steel pipe that need change caliber and wall thickness is carried out " tup " (need being about to the certain-length of the pipe end of cold-drawn processing to adopt mechanical means with flat, the toe of its hammer), the steel pipe head that " hammer " crossed can extend through the nib of the drawing die of drawbench, clamp and carry out draw by plyer, make the steel pipe of drawing forming meet needed caliber and wall thickness.
At present, the equipment of " tup " mainly contains: pneumatic hammer, rotary forging machine, forcing press and head rolling machine etc.Wherein pneumatic hammer is most widely used a kind of.This method is: an end that earlier need is carried out the steel pipe of cold-drawn heats, then fire end is placed on and carries out " tup " under the pneumatic hammer, make toe steel pipe one end can pass the cold-drawn mould of drawbench section is carried out draw so that plyer is clamped steel tube end part " tup ".But with this " tup " mode, metal loss is big, the labour intensity height, and environment is poor; In addition, because an end of steel pipe is dense state after " tup ", in operations such as the pickling of carrying out subsequently, phosphatization, saponification, the iron scale that steel pipe internal-surface comes off is difficult to rinse well, thereby influences the inner surface quality of steel pipe greatly.
United States Patent (USP) 4726211 only is the manufacture method of the drawn tube that thickens of a kind of both-end.The present invention replaces using always " tup " equipment with necking machine, improves the steel pipe internal-surface quality to reach, and reduces metal consumption, and the preceding degree that lightens one's labor improves the purpose of operating environment.Necking machine of the present invention is before cold-drawn processing, the steel pipe that needs reducing is sent into pipe end reducing die on the nib plate that is positioned at the necking machine front portion by force by hydraulic-driven power after by clamp, become to pass the cold-drawn nib of drawbench by the pipe end caliber reducing behind the nib, to carry out cold-drawn processing.
Necking machine of the present invention is to be made of mechanical system and hydraulic system two parts, and its structure is seen Fig. 1.It is made up of master cylinder (1), auxiliary cylinder (2), anchor clamps voussoir (3), clamp body (4), clamping fixture seat (5), pull bar (6), dolly (7), support (8), dies holder (9), reducing template (10), reducing die (11), pulley (12) and pulley groove (13).Auxilliary cylinder (2) piston is a hollow structure, auxilliary cylinder pistons end has the corresponding dead slot of two pull bars (6) by tie rod end elbow connecting clamp voussoir (3), the anchor clamps voussoir is moved with auxilliary cylinder piston, and anchor clamps voussoir (3) can move forward and backward in clamp body (4).Be equipped with the semicircular clamp sheet of two lobes (Fig. 2 14) in the anchor clamps voussoir, clamp sheet (14) side of being milled with, surface (square) shape pointed tooth, it is that inner hex bolts and stop shoulder and anchor clamps voussoir (3) link, as shown in Figure 2, according to the outer diameter of steel pipes difference of need reducing, the specification of clamp sheet (14) can be changed.When auxilliary cylinder piston backward the time, drive anchor clamps voussoirs (3) and retreat, because anchor clamps voussoir (3) is to slide on the frustum inwall inclined-plane of clamping body (4), make it out apart from dwindling, so that the pointed tooth of clamp sheet clamps the steel pipe of shrinkage waiting open; When auxilliary cylinder piston forward was sent, anchor clamps voussoir (3) was opened apart from increasing, and steel pipe is released.In addition, auxilliary cylinder (2), clamp body (4) and anchor clamps voussoir (3) all are installed on the dolly (7), clamping fixture seat (5) two sides respectively have two piston rods of master cylinder (1) to link with it, when master cylinder advances, just drive clamping fixture seat, the mechanism that anchor clamps and auxilliary cylinder etc. are installed on the dolly (7) moves forward, and dolly (7) is controlled by hydraulic system separately with support (8) two parts.Fig. 3 is the necking machine fundamental diagram.Master cylinder (1) is finished by three position four-way electromagnetic valve (18) with the commutation of auxilliary cylinder (2), the synchronous operation of two master cylinders realizes by shunting-combiner valve (17), the oil pressure of oil circuit is guaranteed that by overflow valve (19) effective speed of auxilliary cylinder is regulated by unidirectional flow speed control valve (15).At first make oil pump (20) and master cylinder is pushed back its extreme position through three position four-way electromagnetic valve (18), make it reach synchronous by two hydraulic control one-way valves (16), second step protracted auxilliary cylinder by three position four-way electromagnetic valve (18), open anchor clamps, pipe is sent in auxilliary cylinder mesopore axle, and reserve necessary reducing length, the 3rd step made auxilliary cylinder rollback by three position four-way electromagnetic valve (18), tighten up anchor clamps and keep this state, then further master cylinder is sent to synchronously by three position four-way electromagnetic valve (18), make pipe end force the feeding reducing die,, master cylinder is stopped when reducing length reaches technological requirement, make it return back to the back extreme position, and the maintenance oil cylinder working-pressure, start auxilliary cylinder again, auxilliary cylinder is moved forward, anchor clamps are opened automatically, the pipe that has got loose is extracted out in the mesopore axle of auxilliary cylinder piston, sent into second pipe then, repeat above action.
The course of work of necking machine of the present invention is: the steel pipe that needs is carried out reducing, put into the mesopore axle of auxilliary cylinder piston, the certain-length of pipe end is stayed outside the clamping fixture seat, operate hydraulic selector then, thereby making auxilliary cylinder piston retreat the anchor clamps voussoir that drives auxilliary cylinder pistons end shrinks, clamp sheet by the side of being milled with, top layer (square) shape pointed tooth clamps the neck that needs the reducing steel pipe, afterwards, start two master cylinders again, master cylinder piston is ejected, thereby drive clamping fixture seat forward, just will be installed in the anchor clamps on the dolly, shrinkage waiting open steel pipe in the anchor clamps, auxilliary cylinder and auxilliary cylinder piston etc. are pushed the reducing die of required size to, steel tube end part is pressed into nib, makes the pipe end of certain size length reach the size of being convenient to pass drawbench cold-drawn nib through dwindling into caliber behind the nib, and after a reducing, if size does not reach requirement as yet, just can carry out twice or repeatedly reducing as long as change the reducing die of different size.
Adopt the reducing technology of necking machine of the present invention can reach the purpose that reduces metal consumption and improve the steel pipe internal-surface quality, as adopt the technology of former " tup ", the loss that its " tup " part causes accounts for 20～40% of the total metal consumption of drawn tube production.And its reducing segment length of necking down process only is 3/5～4/5 of " tup " section, has reduced metal loss.Because the pipe end through reducing is hollow form, in acid cleaning process, makes the iron scale in the steel tube inner hole be easier to rinse well, has improved pickling quality, thereby improved the quality of table in the steel pipe.
The reducing technology of necking machine of the present invention can not only be applied to steel pipe, and is applicable to nonferrous metal tube.
Concrete structure of the present invention and embodiment:
Fig. 1 cold-drawn three-dimensional sketch of necking machine
Wherein:
1, master cylinder 2, auxiliary cylinder 3, anchor clamps voussoir
4, clamp body 5, clamping fixture seat 6, pull bar
7, dolly 8, support 9, reducing die holder
10, reducing template 11, reducing die 12, pulley
13, pulley groove
Fig. 2 anchor clamps voussoir connects figure with clamp sheet
3, anchor clamps voussoir 14, clamp sheet
Fig. 3 necking machine fundamental diagram
Wherein:
1, master cylinder 2, auxiliary cylinder 3, anchor clamps voussoir
15, unidirectional flow speed control valve 16, hydraulic control one-way valve 17, shunting-combiner valve
18, three position four-way electromagnetic valve 19, overflow valve 20, axial plunger pump
21, oil filter 22, fuel tank 23, angle one-way valve
24, Pressure gauge
Embodiment:
Necking machine of the present invention has a dolly to move by pulley in the support chute.One end of support has a dies holder, the reducing die that has different mold hole dimensions can be installed, on dolly, be equipped with the auxilliary cylinder piston of one in auxilliary cylinder and hollow, have pull bar at auxilliary cylinder pistons end, two semicircle clamp sheet of band side's (square) the shape pointed tooth when auxilliary cylinder piston retreats on the anchor clamps are just shunk relatively.When auxilliary cylinder piston protracted, semicircle clamp sheet will be opened.
The steel pipe of the shrinkage waiting open of the φ 34 * 4mm mesopore by the auxiliary cylinder piston is penetrated, stay the steel pipe of certain-length shrinkage waiting open in the anchor clamps front portion, when auxilliary cylinder piston retraction, the anchor clamps voussoir clamps the steel pipe of shrinkage waiting open, then, start the master cylinder of two synchronous operations, clamping fixture seat is equipped with in drive, and the dolly of the auxilliary cylinder piston of clamping reducing pipe and auxilliary cylinder etc. makes the nib of being pushed to the φ 27mm on the template by the steel pipe of reducing, when being passed through nib by the pipe end of reducing, the master cylinder retraction starts auxilliary cylinder then and advances, and opens anchor clamps, make to be got loose, can take out and be shortened into the steel pipe that pipe end is φ 27mm by the steel pipe of reducing.
Claims (10)
1, drawn tube necking machine, it is characterized in that, it is the dolly by the anchor clamps voussoir of an auxiliary cylinder, auxilliary cylinder piston, auxilliary cylinder pistons end, clamp body and installation said apparatus, clamping fixture seat, promote the master cylinder piston and the master cylinder of clamping fixture seat, compositions such as mechanical system such as the pulley under the dolly, pulley groove and support and corresponding hydraulic system.
2, drawn tube necking machine according to claim 1 is characterized in that, auxilliary cylinder piston is a hollow structure.
According to the described drawn tube necking machine of claim 1～2, it is characterized in that 3, auxilliary cylinder pistons end has two pull bars, tie rod end respectively has an elbow to embed in the corresponding dead slot of two anchor clamps voussoirs.
4, drawn tube necking machine according to claim 1 is characterized in that, the outer surface of anchor clamps voussoir matches with the square frustum inwall of clamp body, and inner surface matches for semicircle clamp sheet with different size.
5, drawn tube necking machine according to claim 4 is characterized in that, the profile of clamp sheet is the semicircle of two lobe band stop shoulders, can change the internal diameter of different size according to need reducing steel pipe specification.
6, drawn tube necking machine according to claim 1 is characterized in that, auxiliary cylinder, auxilliary cylinder piston and clamping fixture seat etc. are to be installed on the dolly, pulley and chute is arranged below the dolly.
7, drawn tube necking machine according to claim 1 is characterized in that, two master cylinders are arranged on the support, and the piston on the master cylinder is connected with clamping fixture seat, and the clamping fixture seat center has the circular mounting hole to be connected with the clamp body.
8, drawn tube necking machine according to claim 1 is characterized in that, at an end of necking machine support one dies holder is arranged, and template is installed in the dies holder, and the center of template is equipped with removable reducing die.
9, drawn tube necking machine according to claim 1 is characterized in that, its action of two master cylinders of necking machine is for synchronous.
10, drawn tube necking machine according to claim 1 is characterized in that, the master cylinder of necking machine and auxilliary cylinder respectively have the corresponding hydraulic plumbing system of a cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93112490A CN1046222C (en) | 1993-07-14 | 1993-07-14 | Reducing press for cold-drawing pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93112490A CN1046222C (en) | 1993-07-14 | 1993-07-14 | Reducing press for cold-drawing pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1097362A true CN1097362A (en) | 1995-01-18 |
| CN1046222C CN1046222C (en) | 1999-11-10 |
Family
ID=4990098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93112490A Expired - Lifetime CN1046222C (en) | 1993-07-14 | 1993-07-14 | Reducing press for cold-drawing pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1046222C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233389A (en) * | 2010-04-27 | 2011-11-09 | 辽阳钢管有限公司 | Diameter-reducing machine |
| CN102319817A (en) * | 2011-08-17 | 2012-01-18 | 天津赛瑞机器设备有限公司 | Tube end closing method for dope tube |
| CN105057374A (en) * | 2015-08-12 | 2015-11-18 | 东北大学 | Automatic mould loading and pre-drawing equipment used for pipe cold drawing machine |
| CN106363084A (en) * | 2016-08-31 | 2017-02-01 | 安徽金三环金属科技有限公司 | Necking machine cold-punching mold device |
| CN106424397A (en) * | 2016-11-02 | 2017-02-22 | 江苏双友智能装备科技股份有限公司 | Internal expansion and external contraction mechanical device for tubular part |
| CN107639172A (en) * | 2017-11-10 | 2018-01-30 | 南昌航空大学 | It is a kind of while realize manufacturing process and device that pipe end shrink mouth thickens |
| CN107882804A (en) * | 2016-09-29 | 2018-04-06 | 周士忠 | The installation cooperating equipment of hydraulic cylinder |
| CN108824216A (en) * | 2018-08-24 | 2018-11-16 | 北京中铁房山桥梁有限公司 | A kind of slip synchronizer and prestressed girder pipeline withdrawing sebific duct and whole beam lashing trolley with slip synchronizer |
| CN109108173A (en) * | 2018-08-13 | 2019-01-01 | 宋丽 | A kind of necking tightening device for automobile air-conditioning pipe connection |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327983C (en) * | 2004-06-03 | 2007-07-25 | 中国科学院金属研究所 | Aluminum alloy tubing straightening method and special fixture thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4726211A (en) * | 1984-04-16 | 1988-02-23 | Sanwa Kokan Kabushiki Kaishas | Method of cold drawing seamless metal tubes each having an upset portion on each end |
| SU1324723A1 (en) * | 1985-10-01 | 1987-07-23 | Ростовский-На-Дону Завод-Втуз При Заводе "Ростсельмаш",Филиал Ростовского-На-Дону Института Сельскохозяйственного Машиностроения | Method and apparatus for roasting hollow billets |
| SU1323181A1 (en) * | 1985-11-26 | 1987-07-15 | Омский политехнический институт | Die for reducing round billets |
| SU1388153A1 (en) * | 1986-09-24 | 1988-04-15 | Ростовское-на-Дону производственное объединение "Ростпродмаш" | Die for reducing tubular billets |
| SU1407627A1 (en) * | 1987-01-07 | 1988-07-07 | Ростовский-На-Дону Завод-Втуз При Заводе "Ростсельмаш" Филиал Ростовского Института Сельскохозяйственного Машиностроения | Arrangement for reducing tubular billets |
-
1993
- 1993-07-14 CN CN93112490A patent/CN1046222C/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233389A (en) * | 2010-04-27 | 2011-11-09 | 辽阳钢管有限公司 | Diameter-reducing machine |
| CN102319817A (en) * | 2011-08-17 | 2012-01-18 | 天津赛瑞机器设备有限公司 | Tube end closing method for dope tube |
| CN102319817B (en) * | 2011-08-17 | 2013-08-21 | 天津赛瑞机器设备有限公司 | Tube end closing method for dope tube |
| CN105057374A (en) * | 2015-08-12 | 2015-11-18 | 东北大学 | Automatic mould loading and pre-drawing equipment used for pipe cold drawing machine |
| CN105057374B (en) * | 2015-08-12 | 2017-01-11 | 东北大学 | Automatic mould loading and pre-drawing equipment used for pipe cold drawing machine |
| CN106363084A (en) * | 2016-08-31 | 2017-02-01 | 安徽金三环金属科技有限公司 | Necking machine cold-punching mold device |
| CN107882804A (en) * | 2016-09-29 | 2018-04-06 | 周士忠 | The installation cooperating equipment of hydraulic cylinder |
| CN106424397A (en) * | 2016-11-02 | 2017-02-22 | 江苏双友智能装备科技股份有限公司 | Internal expansion and external contraction mechanical device for tubular part |
| CN107639172A (en) * | 2017-11-10 | 2018-01-30 | 南昌航空大学 | It is a kind of while realize manufacturing process and device that pipe end shrink mouth thickens |
| CN109108173A (en) * | 2018-08-13 | 2019-01-01 | 宋丽 | A kind of necking tightening device for automobile air-conditioning pipe connection |
| CN109108173B (en) * | 2018-08-13 | 2020-11-06 | 安徽匠桥科技服务有限公司 | Necking tightening device for automobile air conditioner pipe connection |
| CN108824216A (en) * | 2018-08-24 | 2018-11-16 | 北京中铁房山桥梁有限公司 | A kind of slip synchronizer and prestressed girder pipeline withdrawing sebific duct and whole beam lashing trolley with slip synchronizer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1046222C (en) | 1999-11-10 |
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| C10 | Entry into substantive examination | ||
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BAOSHAN IRON & STEEL CO., LTD. Free format text: FORMER NAME OR ADDRESS: SHANGHAI BAO STEEL GROUP IRON AND STEEL CO LTD Owner name: BAOSHAN STEEL GROUP IRON AND STEEL CO LTD Free format text: FORMER NAME OR ADDRESS: SHANGHAI BAOSHAN IRON AND STEEL GENERAL PLANT Owner name: SHANGHAI BAO STEEL GROUP IRON AND STEEL CO LTD Free format text: FORMER NAME OR ADDRESS: BAOSHAN STEEL GROUP IRON AND STEEL CO LTD |
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| CP03 | Change of name, title or address |
Address after: 201900, Fujin Road, Shanghai, Baoshan District orchard Patentee after: BAOSHAN IRON & STEEL Co.,Ltd. Address before: 200122 No. 370 Pu circuit, Shanghai, Pudong New Area Patentee before: BAOSHAN IRON & STEEL CO.,LTD. Address after: 200122 No. 370 Pu electrical appliance, Shanghai, Pudong New Area Patentee after: BAOSHAN IRON & STEEL CO.,LTD. Address before: 200190, Fujin Road, Shanghai, Baoshan District orchard Patentee before: Baosteel Group Corporation Address after: 200190, Fujin Road, Shanghai, Baoshan District orchard Patentee after: Baosteel Group Corporation Address before: 201900 No. 1, Middle Road, Baoshan District, Shanghai Patentee before: BAOSHAN IRON & STEEL |
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130714 Granted publication date: 19991110 |