CN201195169Y - Automatic feeding apparatus - Google Patents
Automatic feeding apparatus Download PDFInfo
- Publication number
- CN201195169Y CN201195169Y CNU2008201077195U CN200820107719U CN201195169Y CN 201195169 Y CN201195169 Y CN 201195169Y CN U2008201077195 U CNU2008201077195 U CN U2008201077195U CN 200820107719 U CN200820107719 U CN 200820107719U CN 201195169 Y CN201195169 Y CN 201195169Y
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- China
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- core bar
- workpiece
- baffle plate
- centre bore
- roller
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- Expired - Fee Related
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Abstract
The utility model relates to an automatic feeding device of a hydraulic drawbench, which is provided with a workpiece roller way and a carrier roller; an opening-closing core bar baffle plate is arranged on a core bar pedestal; an opening-closing workpiece baffle plate is arranged on a workpiece pushing plate; a core bar gripping head is arranged on an outer mold holder; a workpiece is pushed on the carrier roller after passing through the center holes of the core bar pedestal and the workpiece pushing plate under the pushing of the roller way and conveyed to an inner mold by the workpiece pushing plate after being clamped by the workpiece baffle plate, and then the workpiece pushing plate is pulled back and the workpiece is pushed into a mould by the workpiece baffle plate on the workpiece pushing plate, thereby the workpiece feeding is finished. The utility model realizes the automatic feeding without loading and unloading the inner mould and moving the core bar and improves the production efficiency of the hydraulic drawbench.
Description
Affiliated technical field
The utility model relates to a kind of feeding device of metal plastic deformation process equipment, especially a kind of automatic charging device that is used for the hydraulic steel pipe drawbench.
Background technology
By plastic deformation metal being processed is a kind of process commonly used, and steel pipe is further processed with regard to draw commonly used, and wherein the draw of large diameter steel pipe generally uses hydraulic drawbench.There are functional parts such as the core bar seat of the outer mould base that external mold is housed, the internal mold core bar that internal mold and nut are housed, location internal mold core bar, scraping wings, pusher oil cylinder in the mechanism that relates to the material loading operation on existing known hydraulic drawbench.Wherein the centre bore axis of external mold axis and core bar seat point-blank.Internal mold be dismountable front end that is contained in core bar (for sake of convenience, each parts is front end or front side, front with the one side of die holder direction outward, the one side of outer mould base direction is rear end or rear side, back dorsad,), the core bar rear end is passed the centre bore of core bar seat and nut is housed, and the external diameter of nut is greater than the diameter of core bar seat centre bore, and nut withstands on the rear side of core bar seat, core bar can not be moved forward, to bear pulling capacity.Internal mold is to be arranged in external mold during the draw steel pipe.Core bar to be moved backward earlier during drawing steel pipe material loading, internal mold is shifted out from external mold, then internal mold is unloaded from core bar, core bar is continued to move backward again make its front end apart from the distance of outer mould base greater than steel pipe length, steel pipe is placed between core bar front end and the outer mould base.Move forward core bar and make its endoporus that passes steel pipe, expose, internal mold is refilled on the core bar front end until the front end of core bar front end from steel pipe.Start the pusher oil cylinder, make the rear end of scraping wings pushing tow steel pipe, steel pipe, internal mold, core bar are pushed in external mold together, push up the rear side of core bar seat until the nut of core bar rear end, at this moment just can drawing.Above material loading process efficiency is very low, causes hydraulic drawbench to be longer than the draw time non-cutting time, and production efficiency is difficult to improve, the internal mold hundreds of kilogram that weighs when the draw large-diameter steel pipe particularly, and loading and unloading are difficulty very.This problem has become the major obstacles of drawing technique development.
Summary of the invention
The purpose of this utility model provides a kind of feeding device of new construction, does not need to load and unload internal mold and mobile core bar when making hydraulic drawbench draw steel pipe material loading, realizes automatic charging, to significantly improve production efficiency, obtains better economic benefit.
For achieving this end, technical solution adopted in the utility model is as follows: this hydraulic drawbench automatic charging device is made up of outer mould base, core bar seat, internal mold, core bar, core bar nut, workpiece roller-way, core bar baffle plate, scraping wings, pusher oil cylinder, workpiece baffle plate, core bar chuck, support carrying roller, driving mechanism, hydraulic system, control system.It is characterized in that the external diameter of the diameter of core bar seat centre bore greater than the steel pipe workpiece; Core bar seat outer mould base one side dorsad has the workpiece roller-way; The core bar seat is equipped with movably core bar baffle plate on the face of outer mould base dorsad; The support carrying roller is arranged between core bar seat and the outer mould base; The diameter of scraping wings centre bore is greater than the external diameter of steel pipe workpiece, and scraping wings is equipped with movably workpiece baffle plate on the face of die holder outward; Outer mould base has the core bar chuck on the face of core bar seat; The external diameter of core bar nut is less than the steel pipe inner diameter of workpiece.
The roller of workpiece roller-way is connected with driving mechanism, and pressure roller is housed.
The roller of workpiece roller-way also can be a two halves formula roller, and two halves freely rotate separately, and the space is left in the centre, draws the material hook in the space, draws the material hook to be installed on the driving chain.
The core bar baffle plate is divided into several, and each piece is driven and can be separated or close up by driving mechanism, and when closing up, core bar baffle plate and core bar seat are fitted; Each piece is apart from the smallest radial size at the core bar seat centre bore center radius greater than excircle of workpiece in the time of separately, when closing up each piece apart from the smallest radial size at core bar seat centre bore center greater than the radius of core bar cylindrical radius less than core bar nut cylindrical.
The core bar baffle plate also can be an integral body, has breach on it; The core bar baffle plate is driven by driving mechanism, make on it breach near or away from the center of core bar seat centre bore, core bar baffle plate and the applying of core bar seat near the center of core bar seat centre bore the time; Breach during near the center of core bar seat centre bore on the core bar baffle plate apart from the smallest radial size at core bar seat centre bore center radius greater than excircle of workpiece, when closing up on the core bar baffle plate apart from the smallest radial size at core bar seat centre bore center greater than the radius of core bar cylindrical radius less than core bar nut cylindrical.
The workpiece baffle plate is divided into several, and each piece is driven and can be separated or close up by driving mechanism, and when closing up, workpiece baffle plate and scraping wings are fitted; Each piece is apart from the smallest radial size at the scraping wings centre bore center radius greater than excircle of workpiece in the time of separately, when closing up each piece apart from the smallest radial size at scraping wings centre bore center less than radius of a circle in the workpiece.
Support carrying roller and be connected with driving mechanism, can stretch.
The core bar chuck is connected with driving mechanism, can clamp and unclamp.
When this feed mechanism was worked, its front end core bar cramp head-clamp of core bar of loading onto internal mold fastened, and its rear end is supported by supporting carrying roller.The steel pipe workpiece places on the workpiece roller-way, is pushed by the workpiece roller-way and advances.At this moment the position of scraping wings is between core bar seat and the support carrying roller near the core bar seat.Core bar baffle plate each piece under the drive of driving mechanism that is divided into several on the core bar seat is separated from each other, and it is big that the space that each piece surrounds becomes, and can allow steel pipe therefrom pass.As adopt notched integral core pole spacing plate, then core bar baffle plate its breach under the drive of driving mechanism leaves core bar seat centre bore, to allow steel pipe pass through.Workpiece baffle plate on the scraping wings is also similar with the action of core bar baffle plate at this moment, is in the state that allows steel pipe pass through.The steel pipe workpiece in turn by the space between the space between the core bar baffle plate, core bar seat centre bore, scraping wings centre bore, workpiece baffle plate, arrives support carrying roller place until the steel pipe front end under the workpiece roller-way pushes like this.At this moment support the carrying roller segment distance that descends, become supporting steel pipe by supporting core rod.Workpiece baffle plate each piece under driving mechanism drives closes up the clamping steel pipe then.Start the pusher oil cylinder and advance, scraping wings just is being with steel pipe to continue to move forward.At scraping wings during through middle support carrying roller, support carrying roller and descend and allow scraping wings pass through, scraping wings back in the past supports carrying roller and rises the continuation supporting steel pipe again.At this moment the core bar chuck unclamps so that steel pipe passes through.Scraping wings pushes steel pipe to its front end and arrives the internal mold place.Driving mechanism is separated from each other to unclamp steel pipe each piece of workpiece baffle plate then, and the reverse scraping wings of pusher oil cylinder retreats, and the workpiece baffle plate nose motion on scraping wings arrives after the steel pipe rear end.Make driving mechanism drive each piece of workpiece baffle plate again and close up mutually, make space that each piece of workpiece baffle plate surrounds less than outer diameter of steel pipes; Core bar baffle plate each piece under the drive of driving mechanism on the core bar seat closes up mutually simultaneously, and the space that each piece surrounds diminishes, or the breach of integral core pole spacing plate is near the center of core bar seat centre bore, to block the core bar nut.Start pusher oil cylinder promotion slurcam once more and advance, at this moment the workpiece baffle plate on the scraping wings just withstands on the rear end of steel pipe, and the steel pipe front end is pushed up on the internal mold, and at this moment the internal mold in steel pipe front end and the steel pipe all is in the external mold, can carry out drawing.Above-mentioned material loading process is carried out under control system control automatically, has so just realized not needing to load and unload the automatic charging of internal mold and mobile core bar on the hydraulic steel pipe drawbench.
The beneficial effects of the utility model are that automatic charging has overcome the major obstacles of drawing technique development, have shortened the material loading time, significantly improve the production efficiency of drawbench, and provide the foundation for hydraulic steel pipe drawbench production process comprehensive automation.
Description of drawings
Below in conjunction with accompanying drawing structure of the present utility model is elaborated:
Accompanying drawing 1 is that automatic charging device is faced the vertical section structure schematic diagram.
Accompanying drawing 2 be A in the accompanying drawing 1 to view, be workpiece roller-way side-looking structural representation.
Accompanying drawing 3 also is that A in the accompanying drawing 1 is to view, for adopting chain drive and drawing the workpiece roller-way side-looking structural representation of expecting hook.
Accompanying drawing 4 is that E in the accompanying drawing 3 is to view, for adopting chain drive and drawing the workpiece roller-way of expecting hook to face structural representation.
Accompanying drawing 5 be B in the accompanying drawing 1 to view, be the core bar seat structural representation of mounting core pole spacing plate on the face of outer mould base dorsad.
Accompanying drawing 6 also be B in the accompanying drawing 1 to view, the structural representation of integral core pole spacing plate is installed on the face of outer mould base dorsad for the core bar seat.
Accompanying drawing 7 is that the C in the accompanying drawing 1 cuts open figure to looking, and the structural representation of workpiece baffle plate is installed on the face of die holder outward for scraping wings.
Accompanying drawing 8 is that the D in the accompanying drawing 1 cuts open figure to looking, and is the structural representation of outer mould base mounting core bar cramp head on the face of core bar seat.
The specific embodiment
In the accompanying drawings, the 1st, outer mould base, the 2nd, external mold, the 3rd, core bar chuck, the 4th, core bar chuck driving mechanism, the 5th, internal mold, the 6th, core bar, the 7th, the core bar nut, the 8th, support carrying roller, the 9th, support the carrying roller driving mechanism, the 10th, steel pipe workpiece, the 11st, scraping wings, the 12nd, workpiece baffle plate, the 13rd, workpiece barrier driving mechanism, the 14th, core bar seat, the 15th, core bar baffle plate, the 16th, core bar barrier driving mechanism, the 17th, pusher oil cylinder, the 18th, the piston rod of pusher oil cylinder, the 19th, workpiece roller-way, the 20th, roller, the 21st, roller driving mechanism, the 22nd, pressure roller, the 23rd, two halves formula roller, the 24th, driving chain, the 25th, draw the material hook, the 26th, chain drive mechanism, the 27th, the centre bore of core bar seat, the 28th, monoblock type core bar baffle plate, the 29th, breach, the 30th, scraping wings centre bore, the 31st, frame.
The concrete structure of this automatic charging device is as shown in drawings: the two ends that are installed in frame 31 that outer mould base 1 and core bar seat 14 are fixed; In the centre bore that is installed in outer mould base 1 that external mold 2 is fixed, what the cylinder barrel of pusher oil cylinder 17 was fixing is installed on the core bar seat 14, the piston rod 18 of pusher oil cylinder is die holder 1 direction outward, fixedly connected with scraping wings 11 in its end, the piston rod 18 of pusher oil cylinder 17 pusher oil cylinder when connecting switchable pressure oil liquid just stretches out or withdraws, and drives scraping wings 11 and does the two-way linear motion, and the front end of core bar 6 is equipped with internal mold 5, core bar nut 7 is equipped with in the rear end, and the position of internal mold 5 is in external mold 2 when drawing.
Above-mentioned these structures are identical with existing known hydraulic pressure cold drawing machine, inventive point of the present utility model is the external diameter of the diameter of core bar seat centre bore 27 greater than steel pipe workpiece 10, core bar seat 14 side of outer mould base 1 dorsad has workpiece roller-way 19, core bar seat 14 is fixedly mounting core bar barrier driving mechanism 16 on the face of outer mould base 1 dorsad, connecting core bar baffle plate 15 or monoblock type core bar baffle plate 28 on it, the carrying roller 8 of support is arranged between core bar seat 14 and the outer mould base 1 and support carrying roller driving mechanism 9, the diameter of scraping wings centre bore 30 is greater than the external diameter of steel pipe workpiece 10, scraping wings 11 is fixedly mounting workpiece barrier driving mechanism 13 outward on the face of die holder 1 and is connecting workpiece baffle plate 12 on it, outer mould base 1 is connecting core bar chuck 3 towards fixedly mounting core bar chuck driving mechanism 4 on the face of core bar seat 14 on it, and the external diameter of core bar nut 7 is less than the internal diameter of steel pipe workpiece 10.
The roller 20 of workpiece roller-way 19 is connected with roller driving mechanism 21, and pressure roller 22 is housed.
The roller of workpiece roller-way 19 also can be a two halves formula roller 23, and two halves freely rotate separately, and the space is left in two middles, draws material hook 25 in the space, draws material hook 25 to be installed on the driving chain 24.
Core bar baffle plate 15 is divided into several, and each piece is driven and can be separated or close up by core bar barrier driving mechanism 16, and when closing up, core bar baffle plate 15 is fitted to bear pulling capacity with core bar seat 14.Each piece of core bar baffle plate 15 is apart from the smallest radial size at the core bar seat centre bore 27 centers radius greater than steel pipe workpiece 10 cylindricals, so that steel pipe workpiece 10 can therefrom pass in the time of separately; Each piece of core bar baffle plate 15 greater than the radius of the core bar 6 cylindricals radius less than core bar nut 7 cylindricals, simultaneously blocks core bar nut 7 so that core bar 6 can pass apart from the smallest radial size at core bar seat centre bore 27 centers when closing up.
Also can adopt an integral core pole spacing plate 28, have breach 29 on it, core bar baffle plate 28 is driven by core bar barrier driving mechanism 16, breach 29 on it can near or away from the center of core bar seat centre bore 27, near the center of core bar seat centre bore 27 time, core bar baffle plate 28 is fitted to bear pulling capacity with core bar seat 14; Breach 29 during near the center of core bar seat centre bore 27 on the core bar baffle plate 28 apart from the smallest radial size at core bar seat centre bore 27 centers radius, so that steel pipe workpiece 10 can therefrom pass greater than steel pipe workpiece 10 cylindricals; When closing up on the core bar baffle plate 28 apart from the smallest radial size at core bar seat centre bore 27 centers greater than the radius of core bar 6 cylindricals radius less than core bar nut 7 cylindricals block core bar nut 7 simultaneously so that core bar 6 can pass.
Core bar chuck 3 is connected on the core bar chuck driving mechanism 4, can clamp and unclamp.
The state that shown in Figure 1 is when this automatic feed mechanism material loading finishes, its course of work is when material loading begins, and core bar chuck 3 clamps the front end of core bars 6, and the rear end of core bar 6 is supported by supporting carrying roller 8.At this moment the position of scraping wings 11 is in core bar seat 14 and supports 8 of carrying rollers.Core bar baffle plate 15 or integral core pole spacing plate 28 and workpiece baffle plate 12 are in the state that allows steel pipe workpiece 10 pass through.Roller 20 or two halves formula roller 23 promote steel pipe workpiece 10 and move, the space in 12 in the space of reserving by core bar baffle plate 15 or notched monoblock type core bar baffle plate 28, the centre bore 27 of core bar seat, the centre bore 30 of scraping wings, workpiece baffle plate in turn, when arriving on the support carrying roller 8, steel pipe workpiece 10 front ends stop to move, at this moment support carrying roller 8 declines one segment distance, become supporting steel pipe workpiece 10 by supporting core rod 6.Workpiece baffle plate 12 each piece close up clamping steel pipe workpiece 10 then, and pusher oil cylinder 17 starts and advances, and the piston rod 18 of pusher oil cylinder promotes scraping wings 11 and is being with steel pipe workpiece 10 to continue to move forward.At scraping wings 11 during through middle support carrying roller 8, support carrying roller 8 and descend and allow scraping wings 11 pass through, scraping wings 11 back in the past supports carrying roller 8 and rises continuation supporting steel pipe workpiece 10 again.The front end that scraping wings 11 advances to steel pipe workpiece 10 stops when arriving the rear end of internal mold 5, and workpiece baffle plate 12 each piece are separated from each other to unclamp steel pipe then.Pusher oil cylinder 17 oppositely makes scraping wings 11 retreat, and the nose motion of the workpiece baffle plate 12 on it arrives after the rear end of steel pipe workpiece 10.Workpiece baffle plate 12 each piece close up once more, and the space that its each piece surrounds is less than the external diameter of steel pipe workpiece 10; Simultaneously core bar baffle plate 15 each piece close up mutually, or integral core pole spacing plate 28 moves, and its breach 29 blocks core bar nut 7 near the center of core bar seat centre bore 27, and core bar chuck 3 opens so that steel pipe passes through simultaneously.Start pusher oil cylinder 17 promotion scraping wings 11 once more and advance, at this moment workpiece baffle plate 12 just withstands on the rear end of steel pipe workpiece 10, and steel pipe workpiece 10 front ends are pushed up on the internal mold 5, and at this moment steel pipe workpiece 10 front ends and internal mold 5 all are in the external mold 2, can carry out drawing.Above-mentioned material loading process is carried out under control system control automatically, has so just realized not needing to load and unload the automatic charging of internal mold and mobile core bar on the hydraulic steel pipe drawbench.
Claims (8)
1. automatic charging device, it is made up of outer mould base, core bar seat, internal mold, core bar, core bar nut, workpiece roller-way, core bar baffle plate, scraping wings, pusher oil cylinder, workpiece baffle plate, core bar chuck, support carrying roller, driving mechanism, hydraulic system, control system, it is characterized in that the external diameter of the diameter of core bar seat centre bore greater than the steel pipe workpiece; Core bar seat outer mould base one side dorsad has the workpiece roller-way; The core bar seat is equipped with movably core bar baffle plate on the face of outer mould base dorsad; The support carrying roller is arranged between core bar seat and the outer mould base; The diameter of scraping wings centre bore is greater than the external diameter of steel pipe workpiece, and scraping wings is equipped with movably workpiece baffle plate on the face of die holder outward; Outer mould base has the core bar chuck on the face of core bar seat; The external diameter of core bar nut is less than the steel pipe inner diameter of workpiece.
2. automatic charging device according to claim 1 is characterized in that: the roller of workpiece roller-way is connected with driving mechanism, and pressure roller is housed.
3. automatic charging device according to claim 1 is characterized in that: the roller of workpiece roller-way also can be a two halves formula roller, and two halves freely rotate separately, and the space is left in the centre, draws the material hook in the space, draws the material hook to be installed on the driving chain.
4. automatic charging device according to claim 1 is characterized in that: the core bar baffle plate is divided into several, and each piece is driven and can be separated or close up by driving mechanism, and when closing up, core bar baffle plate and core bar seat are fitted; Each piece is apart from the smallest radial size at the core bar seat centre bore center radius greater than excircle of workpiece in the time of separately, when closing up each piece apart from the smallest radial size at core bar seat centre bore center greater than the radius of core bar cylindrical radius less than core bar nut cylindrical.
5. automatic charging device according to claim 1 is characterized in that: the core bar baffle plate also can be an integral body, has breach on it; The core bar baffle plate is driven by driving mechanism, make on it breach near or away from the center of core bar seat centre bore, core bar baffle plate and the applying of core bar seat near the center of core bar seat centre bore the time; Breach during near the center of core bar seat centre bore on the core bar baffle plate apart from the smallest radial size at core bar seat centre bore center radius greater than excircle of workpiece, when closing up on the core bar baffle plate apart from the smallest radial size at core bar seat centre bore center greater than the radius of core bar cylindrical radius less than core bar nut cylindrical.
6. automatic charging device according to claim 1 is characterized in that: the workpiece baffle plate is divided into several, and each piece is driven and can be separated or close up by driving mechanism, and when closing up, workpiece baffle plate and scraping wings are fitted; Each piece is apart from the smallest radial size at the scraping wings centre bore center radius greater than excircle of workpiece in the time of separately, and each piece is apart from the smallest radial size at the scraping wings centre bore center radius less than excircle of workpiece when closing up.
7. automatic charging device according to claim 1 is characterized in that: support carrying roller and be connected with transmission mechanism, can stretch.
8. automatic charging device according to claim 1 is characterized in that: the core bar chuck is connected with transmission mechanism, can clamp and unclamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201077195U CN201195169Y (en) | 2008-03-20 | 2008-03-20 | Automatic feeding apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201077195U CN201195169Y (en) | 2008-03-20 | 2008-03-20 | Automatic feeding apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201195169Y true CN201195169Y (en) | 2009-02-18 |
Family
ID=40414809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201077195U Expired - Fee Related CN201195169Y (en) | 2008-03-20 | 2008-03-20 | Automatic feeding apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201195169Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350445A (en) * | 2011-09-28 | 2012-02-15 | 张家港保税区恒隆钢管有限公司 | Cold-drawing machine for seamless steel tube |
| CN102430603A (en) * | 2011-12-07 | 2012-05-02 | 浙江伦宝金属管业有限公司 | Device for automatically assisting in inserting core rod into cold drawing steel pipe |
| CN102489886A (en) * | 2011-11-21 | 2012-06-13 | 江苏大德重工有限公司 | Feeding carrier roller device on laser cutting machine |
| CN106111712A (en) * | 2016-07-12 | 2016-11-16 | 江苏宏亿钢管有限公司 | The automatic charging equipment of drawbench |
| CN107377644A (en) * | 2017-09-08 | 2017-11-24 | 明阳科技（苏州）股份有限公司 | A kind of feed mechanism for automatic cold drawn forming |
| CN110918663A (en) * | 2019-12-07 | 2020-03-27 | 西安诺博尔稀贵金属材料股份有限公司 | Device and method for processing inner surface of pure silver pipe |
| CN112642869A (en) * | 2020-12-18 | 2021-04-13 | 衡阳金化高压容器股份有限公司 | Feeding device of tube drawing machine and using method thereof |
-
2008
- 2008-03-20 CN CNU2008201077195U patent/CN201195169Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350445A (en) * | 2011-09-28 | 2012-02-15 | 张家港保税区恒隆钢管有限公司 | Cold-drawing machine for seamless steel tube |
| CN102489886A (en) * | 2011-11-21 | 2012-06-13 | 江苏大德重工有限公司 | Feeding carrier roller device on laser cutting machine |
| CN102430603A (en) * | 2011-12-07 | 2012-05-02 | 浙江伦宝金属管业有限公司 | Device for automatically assisting in inserting core rod into cold drawing steel pipe |
| CN102430603B (en) * | 2011-12-07 | 2013-08-28 | 浙江伦宝金属管业有限公司 | Device for automatically assisting in inserting core rod into cold drawing steel pipe |
| CN106111712A (en) * | 2016-07-12 | 2016-11-16 | 江苏宏亿钢管有限公司 | The automatic charging equipment of drawbench |
| CN107377644A (en) * | 2017-09-08 | 2017-11-24 | 明阳科技（苏州）股份有限公司 | A kind of feed mechanism for automatic cold drawn forming |
| CN107377644B (en) * | 2017-09-08 | 2023-08-22 | 明阳科技（苏州）股份有限公司 | Feeding mechanism for automatic cold drawing forming |
| CN110918663A (en) * | 2019-12-07 | 2020-03-27 | 西安诺博尔稀贵金属材料股份有限公司 | Device and method for processing inner surface of pure silver pipe |
| CN112642869A (en) * | 2020-12-18 | 2021-04-13 | 衡阳金化高压容器股份有限公司 | Feeding device of tube drawing machine and using method thereof |
| CN112642869B (en) * | 2020-12-18 | 2022-08-19 | 衡阳金化高压容器股份有限公司 | Feeding device of tube drawing machine and using method thereof |
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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: 20090218 Termination date: 20120320 |