CN1485159A - Apparatus for punching elbow piece continuously - Google Patents
Apparatus for punching elbow piece continuously Download PDFInfo
- Publication number
- CN1485159A CN1485159A CNA031541585A CN03154158A CN1485159A CN 1485159 A CN1485159 A CN 1485159A CN A031541585 A CNA031541585 A CN A031541585A CN 03154158 A CN03154158 A CN 03154158A CN 1485159 A CN1485159 A CN 1485159A
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- CN
- China
- Prior art keywords
- location
- core bar
- plate
- hydraulic cylinder
- jig
- 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.)
- Granted
Links
- 238000004080 punching Methods 0.000 title 1
- 210000000078 claw Anatomy 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000010720 hydraulic oil Substances 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007514 turning Methods 0.000 claims description 2
- 239000000567 combustion gas Substances 0.000 description 7
- 238000012797 qualification Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
A device of continuously producing angle heads comprises main body, core bar, core head, stock pusher, heating unit. Three positioning boards are installed in the frame, four hydraulic cylinders are set upon the positioning boards and array in a square with the center of the core bar. The core bar goes through three positioning boards, and is at the center of four hydraulic cylinders arraying in equal distance each other. The front end of each hydraulic cylinder is connected to a block base and a set of clamps. There have retractable claws at the front end of clamps. A section of leading screw is between the second and the third positioning board. The stock moves along the core bar with the leading screw to push members to be processed. The heating unit heats members to be processed. The control unit controls the operation. The invention could produce continuously angle heads and angle pipes.
Description
Technical field: what the present invention relates to is machining equipment, specifically is a kind of device of continuous push-making angle fitting.
Background technology: when pipeline connects, often use elbow to connect in the corner of pipeline, the preparation of some elbow is to use the pushing of a kind of elbow push machine to form.The push machine of former usefulness is to use two hydraulic cylinders or two leading screws, and product is enclosed within on the core bar, and propelling movement is finished.During push machine work, every group of product is intermittently to advance, and material loading need be shut down; can not serialization production, promptly when the intact first group of product of pushing, when preparing to pack second group of product into; need stop pushing earlier; with the jig correcting action, adorned second group of product, jig at the end of second group of product again with second group of product jacking forward; at this moment; formerly be pushed into the product of heating,, do not had follow-up product that it is pushed ahead and make the product that formerly pushes long heat time heating time because of when stopping pushing.Because product can not be carried continuously, particularly working as one group of product processes, send in the blanking time of next group product, always having the part product melts, is out of shape, scraps because of overstand in heating process, waste product incidence height is especially processed the thick-wall large-diameter elbow, scraps a loss that just may cause units up to ten thousand, core print is impaired when serious, ruptures, scraps; Former what use with push machine is the heating of intermediate frequency winding, and heating-up temperature is by empiric observation, wayward.At present, also not having in the field of machining of push-making angle fitting can continuous feed, the process equipment of push-making angle fitting continuously.
Summary of the invention: the purpose of this invention is to provide a kind of device of continuous push-making angle fitting, but this device product continuous feed, automatically continuous push-making angle fitting; During push-making angle fitting, heating-up temperature can be controlled, the incidence of reducing the number of rejects and seconds.
The present invention is achieved in that this device is made up of apparatus main body, core print, core bar, pusher, heater.Wherein: apparatus main body is made up of frame, location-plate, hydraulic cylinder, righting rod, and location-plate is three, is installed on the frame, and hydraulic cylinder is two groups four, four hydraulic cylinders on the location-plate of frame be with the core bar center in twos correspondence be square arrangement; Core bar passes three location-plates on the frame, is positioned at the center of hydraulic cylinder, and front end connects core print, and the rear end connects the core bar mobile control system; The front end of each hydraulic cylinder all connects a deck, and each deck connects the jig of a cover by hydraulic control system control, and the jig front end has claw, and claw is flexible by the control of jig hydraulic control system.One group of hydraulic cylinder band jig and is in first qualification position behind the location-plate, and another group hydraulic cylinder band the qualification position before jig is in second location-plate.When being positioned at one group of hydraulic cylinder before second location-plate and pushing ahead, move behind another group hydraulic cylinder, two groups of hydraulic cylinders are by the control of hydraulic cylinder control system, by deck drive jig between first location-plate, second location-plate along the reciprocal alternate run of core bar; All to righting rod should be arranged, righting rod passes from the through hole of deck one end each hydraulic cylinder.Righting rod between second location-plate, the 3rd location-plate is one section leading screw, pusher is the jig that a front end is connected with claw, one end is enclosed within on the leading screw, the core bar of filling the span of a man's arms after the claw of front end closes up, under the control of pusher control system, back and forth move between second location-plate, the 3rd location-plate with leading screw, push product.Clamp and back clamp before one side of second location-plate, the 3rd location-plate is equipped with respectively, preceding clamp and back clamp respectively have a cover control device.Hydraulic cylinder drives the reciprocal alternate run of jig with the pusher with the leading screw operation by deck, along the core bar operation, pushes product, realizes continuous feed.Mode of heating uses combustion gas or fuel oil, and heater comprises heating furnace, nozzle and Control for Kiln Temperature device, air quantity controller, cooling water control device, and the shape of burner hearth is consistent with core print; There are combustion gas (or fuel oil) pipe, airduct in the centre of nozzle, and the gas outlet of nozzle is a flat, and there is cooling water outlet and inlet the rear end, and nozzle is installed a plurality of at inboard wall of burner hearth.During the pushing product, the product of processing is enclosed within and sent the 3rd location-plate on the core bar, block core bar by the back clamp, preceding clamp is in releasing orientation, and pusher pushed second location-plate with product forward along core bar, blocked core bar by preceding clamp, back clamp unclamps, the pusher correcting action.Drive jig by one group of hydraulic cylinder, the claw on the jig stretches out, and the core bar of filling the span of a man's arms continues product to push forward along core bar, and another group hydraulic cylinder also begins to move backward.Simultaneously, next group product is inserted in core bar rapidly, sent the 3rd location-plate, the core bar mobile control system is started working, with the core bar post-tensioning, unclamp preceding clamp, back clamp blocks core bar, and pusher should be organized product and push second location-plate, blocked core bar by preceding clamp, back clamp unclamps, front and back clamp replacement work.At this moment, preceding group hydraulic cylinder has run to the qualification position of first location-plate, stops, and regains claw, meanwhile, another group hydraulic cylinder drives the original position that jig moves to last group of hydraulic cylinder operation backward, stretches out claw, the core bar of filling the span of a man's arms, push product once more, and so forth, alternate run, continuous feed.
The mode of heating of heating furnace also can adopt Electric heating that product is heated among the present invention.
Core bar mobile control system in the invention, hydraulic cylinder control system, jig hydraulic control system, the pusher control system, forward and backward clamp control system is used to guarantee the operation of pushing device, cooperates and realizes continuous feed, pushing continuously.
Four hydraulic cylinders in the technical solution of the present invention can also use four rhizoid thick sticks to replace, four rhizoid thick sticks be divided into two groups on the location-plate of frame be with the core bar center in twos correspondence be square arrangement, leading screw is by two groups of gear controls, by turning to and speed of control system control gear, realize continuous pushing product.
The present invention can be used for various metal pipe bends, big times of bend pipes such as the carbon steel of continuous pushing except that casting system metal tube, stainless steel, copper, aluminium.
Beneficial effect: the device of this continuous push-making angle fitting need not be shut down material loading, but continuous feed; Product is heated evenly in stove, Controllable Temperature, and the waste product incidence is extremely low, continuously push-making angle fitting and big times of bend pipe.
Description of drawings:
Fig. 1 is an overall structure schematic diagram of the present invention;
Fig. 2 is a structure cutaway view of the present invention;
Fig. 3 is hydraulic cylinder a among the present invention
1, a
2Structural representation;
Fig. 4 is hydraulic cylinder b among the present invention
1, b
2Structural representation;
Fig. 5 is the topology view of deck among the present invention, jig;
Fig. 6 is the syndeton schematic diagram of deck, movable cylinder sleeve, jig;
Fig. 7 is the structural representation of nozzle among the present invention.
Among the figure: the 3rd location-plate of 3 second location-plates 4 of 2 first location-plates of 1 frame 5 core bars 6 core prints 7 heating furnaces 8 hydraulic cylinder a
19 hydraulic cylinder a
210 hydraulic cylinder b
111 hydraulic cylinder b
2Clamp 15 leading screws 16 pushers 17 back clamp 18 core bar mobile control systems 19 nozzles 20 jigs 21 through holes 22 copper sheathings 23 claws 24 centre bores 25 jig hydraulic control systems 26 inner cylinder liners 27 movable cylinder sleeves 28 outer cylinder sheaths 29 hydraulic oil channels 30 hydraulic oil are imported and exported 31 nozzles, 32 Gas Pipe, 33 coolant outlets, 34 cooling water inlets, 35 airducts before 12 decks, 13 righting rods 14
The specific embodiment:
According to structure shown in Figure 1, apparatus main body in the invention is made up of frame 1, location- plate 2,3,4, hydraulic cylinder 8,9,10,11, righting rod 13, three location- plates 2,3,4 are contained on the frame 1, clamp 14 and back clamp 17 before being equipped with respectively near the side of second location-plate 3, the 3rd location-plate 4, preceding clamp 14 and back clamp 17 respectively have a cover control system.Four hydraulic cylinders 8,9 are one group, 10,11 is one group, with core bar 5 be the center on location- plate 2,3,4 in twos correspondence be square arrangement, the position of four hydraulic cylinders lays respectively at foursquare four angles, Fig. 2 provides the cutaway view of invention structure, each hydraulic cylinder is made up of inner cylinder liner 26, middle movable cylinder sleeve 27, outer cylinder sheath 28, three cylinder sleeves are sleeved on together successively, hydraulic oil channel 29 is arranged in the middle of the inner cylinder liner 26, the hydraulic oil import and export 30 and the hydraulic oil container of outer cylinder sheath 28 are connected, and consult Fig. 3, Fig. 4.Deck 12 has centre bore 24, and middle movable cylinder sleeve 27 front ends are contained in the centre bore 24 of deck 12, and inner cylinder liner 26 passes from centre bore 24.Deck 12 1 ends have through hole 21, and dress copper sheathing 22 in the through hole 21 passes the copper sheathing 22 of righting rod 13 in through hole 21.The other end side of deck 12 has the hole, and jig 20 is installed in the hole, by deck 12 movable cylinder sleeve 27 and jig 20 is connected and fixed, and guarantees that hydraulic cylinder can drive jig 20 front and back alternate runs by deck 12.Claw 23 is installed in the front end of jig 20, by stretching of the jig hydraulic control system 25 control claws 23 that are installed in jig 20 rear ends, claw 23 core bar 5 of after the position that is limited by control system closes up, filling the span of a man's arms, claw 23 is filled the span of a man's arms behind the core bar 5, leave certain clearance between claw 23 and the core bar 5, guaranteeing can be along core bar 5 trouble-free operation forward when claw 23 pushes product forward.The front end of each hydraulic jack all connects a deck 12, and each deck 12 is installed 20, two of jigs that overlap by the control of jig hydraulic control system and corresponded to one group, consults Fig. 5, Fig. 6.Because every group of hydraulic cylinder is corresponding in twos on foursquare corresponding angles, i.e. hydraulic cylinder 8 (a
1) and hydraulic cylinder 9 (a
2) correspondence, be positioned at first location-plate 2 qualification position afterwards, hydraulic cylinder 10 (b
1) and hydraulic cylinder 11 (b
2) correspondence, be positioned at second location-plate 3 qualification position before, hydraulic cylinder 10 (b
1), 11 (b
2) drive jig 20 and push ahead hydraulic cylinder 8 (a
1), 9 (a
2) then drive and move after jig 20 is regained claws 23, and with core bar 5 alternate run that is the center between first location-plate 2, second location-plate 3.Hydraulic cylinder drives the jig alternate run by the control of hydraulic cylinder control system, core bar 5 is positioned at the center that four hydraulic cylinders are square arrangement, therefore, when the jig of two groups of hydraulic cylinder drives is made alternate run, do not have obstruction each other, core bar 5 passes, is positioned at the center of four hydraulic cylinders 8,9,10,11 from three location-plates on the frame 1, and core print 6 is installed in the front end of core bar 5, the rear end of core bar 5 connects core bar mobile control system 18, by core bar mobile control system 18 control core bars 5.All to a righting rod 13 should be arranged, righting rod 13 promptly has centralizing function to hydraulic cylinder to each hydraulic cylinder, again three location- plates 2,3,4 is had supporting role.Righting rod 13 between second location-plate 3, the 3rd location-plate 4 is one section leading screw 15, one end of pusher 16 is enclosed within on the leading screw 15, the other end connects be can opening and closing two semicircle claws, the core bar 5 of filling the span of a man's arms after claw closes up, pusher 16 back and forth operation between second location-plate 3, the 3rd location-plate 4.In the heater, the burner hearth shape of heating furnace 7 is consistent with core print 6, and its size is greater than core print.Combustion gas nozzle 31 is installed in inboard wall of burner hearth, and the centre of combustion gas nozzle 31 is a Gas Pipe 32, by the temperature in the temperature controller control stove.There is intake-outlet 34,33 rear end of combustion gas nozzle 31, and the turnover water yield by cooling water cycle controller control cooling water is used for cooling, prevents the combustion gas tempering.Airduct 35 is used for bubbling air, by blast volume controller control air quantity.Combustion gas nozzle 31 is a flat, and it is a plurality of to distribute at inboard wall of burner hearth, consults Fig. 7, and like this, the air mixture shape burning in the shape of a spiral from air mixture outlet ejection guarantees that fire box temperature is even, and product is heated evenly in heating furnace.During the pushing product, the product of processing is enclosed within and sent the 3rd location-plate 4 on the core bar 5, block core bar 5 by back clamp 17, preceding clamp 14 is in releasing orientation, pusher 16 with product when core bar 5 pushed second location-plate 3 forward, block core bar 5 by preceding clamp 14 again, back clamp 17 unclamps, and pusher 16 turns back to original position.By hydraulic cylinder 10 (b
1), 11 (b
2) driving jig 20, the claw 23 on the jig 20 stretches out, and the core bar 5 of filling the span of a man's arms continues product to push forward along core bar 5, and another group hydraulic cylinder 8 (a
1), 9 (a
2) begin to move backward.Simultaneously, next group product is inserted in core bar 5 rapidly, when sending the 3rd location-plate 4, core bar mobile control system 18 is started working, with core bar 5 post-tensionings, and clamp 14 before unclamping, back clamp 17 blocks core bar 5, in the time of should being organized product and pushed second location-plate 3 by pusher 16, block core bar 5 by preceding clamp 14, back clamp 17 unclamps.At this moment, preceding group of hydraulic cylinder 10 (b
1), 11 (b
2) run to the qualification position of first location-plate 2, stop, regaining claw 23, meanwhile, another group hydraulic cylinder 8 (a
1), 9 (a
2) drive jig and move to last group of hydraulic cylinder 10 (b backward
1), 11 (b
2) operation original position, stretch out claw, the core bar 5 of filling the span of a man's arms pushes product once more, and so forth, alternate run, continuous feed.
Claims (6)
1, a kind of device of continuous push-making angle fitting is characterized in that: this device is made up of apparatus main body, core bar, core print, pusher, heater, wherein:
A, apparatus main body are made up of frame, location-plate, hydraulic cylinder, righting rod, location-plate is three (2,3,4), four of hydraulic cylinders (8,9,10,11), four hydraulic cylinders be divided into two groups go up at location-plate (2,3,4), with core bar (5) be the center in twos correspondence be square arrangement, each hydraulic cylinder is all to there being righting rod (13); Core bar (5) passes three location-plates on the frame (1), is positioned at the center of four hydraulic cylinders, and front end connects core print (6), and the rear end connects core bar mobile control system (18); The front end of each hydraulic cylinder all connects a deck (12), and each deck (12) connects a cover jig (20), and the front end of jig (20) has telescopic claw (23); Hydraulic cylinder is by hydraulic cylinder control system control, by deck (12) drive jig (20) between first location-plate (2), second location-plate (3) along the reciprocal alternate run of core bar (5); The righting rod that is positioned between second location-plate (3), the 3rd location-plate (4) is one section leading screw (15), pusher (16) is the jig that a front end is connected with claw, one end is enclosed within on the leading screw (15), the core bar (5) of filling the span of a man's arms after the claw of front end closes up, pusher (16) is back and forth moved along core bar (5) between second location-plate (3), the 3rd location-plate (4) with leading screw (15) by the control of pusher control system; One side of second location-plate (3), the 3rd location-plate (4) is equipped with preceding clamp (14) and back clamp (17) respectively, and forward and backward clamp respectively has a cover control device;
B, heater comprise heating furnace (7), nozzle (31) and Control for Kiln Temperature device, air quantity controller, cooling water control device, and the shape of burner hearth is consistent with core print; Nozzle (31) has Gas Pipe (32), airduct (35), and the gas outlet of nozzle (31) is a flat, and there is cooling water outlet and inlet (34,33) rear end.
2, the device of continuous push-making angle fitting according to claim 1, it is characterized in that: in the described hydraulic cylinder, each hydraulic cylinder is made up of inner cylinder liner (26), middle movable cylinder sleeve (27), outer cylinder sheath (28), the front end of the movable cylinder sleeve of hydraulic cylinder (26) is contained in the centre bore (24), hydraulic oil channel (29) is arranged in the middle of the inner cylinder liner (26), and the hydraulic oil of outer cylinder sheath (28) is imported and exported (30) and is connected with hydraulic oil container.
3, the device of continuous push-making angle fitting according to claim 1, it is characterized in that: deck (12) has centre bore (24), the front end of movable cylinder sleeve (26) is contained in the centre bore (24), deck (12) one ends have through hole (21), righting rod (13) passes from through hole (21), the side of the other end has the hole, jig (20) is installed in the hole, there is the flexible of jig hydraulic control system (25) control claw (23) jig (20) rear end, claw (23) core bar (5) of filling the span of a man's arms after the position that is limited by control system closes up moves along core bar (5).
4, the device of continuous push-making angle fitting according to claim 1 is characterized in that: from the air mixture shape burning in the shape of a spiral of nozzle (31) ejection.
5, the device of continuous push-making angle fitting according to claim 1, it is characterized in that: apparatus main body is made up of frame, leading screw, location-plate, righting rod, leading screw is four, four leading screws be divided into two groups on location-plate, with core bar (5) be the center in twos correspondence be square arrangement, leading screw is by two groups of gear controls, by turning to and speed of control system control gear.
6, the device of continuous push-making angle fitting according to claim 1 is characterized in that: do not shut down material loading, continuous push-making angle fitting, big times of bend pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03154158 CN1209205C (en) | 2003-08-14 | 2003-08-14 | Apparatus for punching elbow piece continuously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03154158 CN1209205C (en) | 2003-08-14 | 2003-08-14 | Apparatus for punching elbow piece continuously |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1485159A true CN1485159A (en) | 2004-03-31 |
| CN1209205C CN1209205C (en) | 2005-07-06 |
Family
ID=34156794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03154158 Expired - Fee Related CN1209205C (en) | 2003-08-14 | 2003-08-14 | Apparatus for punching elbow piece continuously |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1209205C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105057708A (en) * | 2015-09-04 | 2015-11-18 | 徐金鹏 | Automatic feeder for numerical control lathe |
| CN110566721A (en) * | 2019-07-19 | 2019-12-13 | 江苏广泓重工设备有限公司 | Continuous jacking device for steel pipe and working method of continuous jacking device |
| CN110842292A (en) * | 2019-09-12 | 2020-02-28 | 精达河北机床制造有限公司 | Elbow cutting device |
-
2003
- 2003-08-14 CN CN 03154158 patent/CN1209205C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105057708A (en) * | 2015-09-04 | 2015-11-18 | 徐金鹏 | Automatic feeder for numerical control lathe |
| CN105057708B (en) * | 2015-09-04 | 2017-04-26 | 宁波市智能制造产业研究院 | Automatic feeder for numerical control lathe |
| CN110566721A (en) * | 2019-07-19 | 2019-12-13 | 江苏广泓重工设备有限公司 | Continuous jacking device for steel pipe and working method of continuous jacking device |
| CN110566721B (en) * | 2019-07-19 | 2021-05-07 | 江苏广泓重工设备有限公司 | Continuous jacking device for steel pipes |
| CN110842292A (en) * | 2019-09-12 | 2020-02-28 | 精达河北机床制造有限公司 | Elbow cutting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1209205C (en) | 2005-07-06 |
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|---|---|---|---|
| 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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Heilongjiang Shenzhou Power Station Equipment Co.,Ltd. Assignor: Liu Xinghai Contract record no.: 2010230000043 Denomination of invention: Apparatus for punching elbow piece continuously Granted publication date: 20050706 License type: Exclusive License Open date: 20040331 Record date: 20100715 |
|
| ASS | Succession or assignment of patent right |
Owner name: HEILONGJIANG WANYIDA PETROLEUM ENGINEERING CO., LT Free format text: FORMER OWNER: LIU XINGHAI Effective date: 20140819 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 163453 DAQING, HEILONGJIANG PROVINCE TO: 163211 DAQING, HEILONGJIANG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140819 Address after: 163211 diligent village, Saertu District, Heilongjiang, Daqing Patentee after: HEILONGJIANG WANYIDA PETROLEUM ENGINEERING Co.,Ltd. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District Kangle District Patentee before: Liu Xinghai |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050706 |
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| CF01 | Termination of patent right due to non-payment of annual fee |