CN101962830B - Digital drawing tester - Google Patents
Digital drawing tester Download PDFInfo
- Publication number
- CN101962830B CN101962830B CN2009100689085A CN200910068908A CN101962830B CN 101962830 B CN101962830 B CN 101962830B CN 2009100689085 A CN2009100689085 A CN 2009100689085A CN 200910068908 A CN200910068908 A CN 200910068908A CN 101962830 B CN101962830 B CN 101962830B
- Authority
- CN
- China
- Prior art keywords
- roller
- synchronous pulley
- connecting axle
- shaping
- reductor
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention discloses a digital drawing tester. A drafting mechanism of the digital drawing tester is a three-roller or four-roller drafting mechanism. The digital drawing tester is characterized in that: rollers of each column of the drafting mechanism consist of own independent servo drive system respectively, wherein the mechanical structure of the servo drive system of a front roller is that: the front roller is mechanically connected with an output shaft of a front-roller speed reducer sequentially by a front-roller universal shaft coupling and a front connecting shaft, an input hole of the front-roller speed reducer is mechanically connected with the output shaft of a front-roller servo motor, and the front-roller speed reducer is fixedly arranged on a speed reducer support; the mechanical structures of the servo drive systems of the other rollers are the same as that of the front roller; the servo drive systems of the rollers of each column are driven and controlled by AC servo drive controllers of each corresponding roller in a digital control system; a molding mechanism is driven by a front-roller servo motor; the front connecting shaft is provided with a front connecting shaft synchronous pulley which is connected with a molding synchronous pulley by a molding synchronous belt; the molding synchronous pulley is arranged on a molding connecting shaft which is mechanically connected with a rear pressing roller; and the rear pressing roller is mechanically connected with a front pressing roller by a pair of pressing gears.
Description
Technical field
The present invention relates to a kind of textile machine, be specially a kind of digitlization drafting testing machine that is used to spin sliver or web.
Background technology
The tradition drawing frame adopts a main motor transmission.Work such as sliver feeding, drawing-off and the shaping of drawing frame drag by this main motor, so machine driven system is very complicated, particularly drafter; Gear drive progression is many; The accumulation gash spacing error is big, and transmission accuracy and transmission efficiency are low, and at every turn during the conversion drafting multiple; All need more gear changing, adjustment puts to no little inconvenience to technology.In addition, the builder of the traditional drawing frame output sliver that can only be shaped, the output web that can not be shaped, the sliver behind the drafting also need could the shaping webs through a ribbon lap machine, long flow path, the requirement of incompatibility drafting sample fast testing.
Summary of the invention
To the shortcoming of prior art, the problem that quasi-solution of the present invention is determined is that a kind of digitlization drafting testing machine is provided; This testing machine adopts digitizing technique, significantly simplifies mechanical mechanism, improves sliver or web quality; And simple in structure, easy to operate, be specially adapted to the sample fast testing of drawing process.
The technical scheme that the present invention solve the technical problem is: design a kind of digitlization drafting testing machine, comprise feed mechanism, drafter, pressing mechanism, builder and be the Digitizing And Control Unit at interface with the touch-screen; Said drafter is three rollers or four roller drafting mechanisms, each the row roller that it is characterized in that said drafter by separately independently servo drive system constitute; Wherein, The mechanical structure of front roller servo drive system is: front roller is successively through the output shaft mechanical connection of front roller Hooks coupling universal coupling, preceding connecting axle and front roller reductor; The input hole of front roller reductor and front roller servomotor output shaft mechanical connection, the front roller reductor is packed on the reductor bearing; The middle roller of three roller drafting mechanisms and rear roller, perhaps the mechanical structure of the preceding middle roller of four roller drafting mechanisms, back middle roller and rear roller servo drive system is identical with the mechanical structure of said front roller servo drive system; Said each row roller servomotor is driven and control by each corresponding in Digitizing And Control Unit roller AC servo driving governor respectively; Described builder is by the transmission of front roller servomotor; Connecting axle synchronous pulley before before said, being equipped with on the connecting axle; Band is connected with the shaping synchronous pulley preceding connecting axle synchronous pulley through being shaped synchronously; The shaping synchronous pulley is installed on the shaping connecting axle, the shaping connecting axle with after press the roller mechanical connection, after press roller and press gear and before press the roller mechanical connection through a pair of.
Compare with domestic and international advanced person's type of production drawing frame, the drafter four row rollers of digitlization drafting testing machine of the present invention are by the direct transmission of corresponding servomotor, and mechanism is simple; Avoided a large amount of geared systems to cause the fluctuation of each row roller rotating speed; Help improving the stability of drawing-off and the quality of the strip that spins, when technological parameters such as needs change drafting multiple, need not more gear changing; Only need to change the rotating speed of each corresponding servomotor, and directly revise technological parameter and can realize through touch-screen; Builder both can be configured as sliver, also can be configured as web; Easy to operate, be specially adapted to sample fast testing needs.Digitizing And Control Unit of the present invention designs based on digitizing techniques such as Programmable Logic Controller, touch-screen, servo-drive, computer technologies; Can realize trying to spin the on-line monitoring, demonstration of various technological parameters in the process, control and regulating automatically automatically, and functions such as the operating automatic monitoring of equipment, automatic stopping.
Description of drawings
Fig. 1 is the overall structure sketch map of a kind of embodiment of digitlization drafting testing machine of the present invention;
Fig. 2 is the Digitizing And Control Unit structural representation of a kind of embodiment of digitlization drafting testing machine of the present invention;
Fig. 3 is the drafter structural representation of a kind of embodiment of digitlization drafting testing machine of the present invention;
Fig. 4 is the builder structural representation of a kind of embodiment of digitlization drafting testing machine of the present invention.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing thereof the present invention is done more detailed description:
Digitlization drafting testing machine of the present invention is (hereinafter to be referred as drawing frame; Referring to Fig. 1-4); Comprise feed mechanism, drafter, pressing mechanism, builder and be the Digitizing And Control Unit at interface with the touch-screen; Described drafter is three roller drafting mechanisms or four roller drafting mechanisms; Embodiment is example explanation with four roller drafting mechanisms, i.e. front roller 11, preceding middle roller 12, back middle roller 13 and rear roller 14, it is characterized in that described front roller 11 successively through front roller Hooks coupling universal coupling 115, preceding connecting axle 114, with the output shaft mechanical connection of front roller reductor 112; The output shaft mechanical connection of the input hole of front roller reductor 112 and front roller servomotor 111, front roller reductor 112 are packed on the reductor bearing 15; Before middle roller 12 successively through preceding middle roller Hooks coupling universal coupling 125, preceding in the output shaft mechanical connection of connecting axle 124 and preceding middle roller reductor 122; The input hole of preceding middle roller reductor 122 and the output shaft mechanical connection of preceding middle roller servomotor 121, preceding middle roller reductor 122 is packed on the reductor bearing 15; Back middle roller 13 successively through after the output shaft mechanical connection of connecting axle 134 and back middle roller reductor 132 in the middle roller Hooks coupling universal coupling 135, back; The output shaft mechanical connection of the input hole of back middle roller reductor 132 and back middle roller servomotor 131, back middle roller reductor 132 is packed on the reductor bearing 15; Rear roller 14 successively through rear roller Hooks coupling universal coupling 145, after the output shaft mechanical connection of connecting axle 144 and rear roller reductor 142; The output shaft mechanical connection of the input hole of rear roller reductor 142 and rear roller servomotor 141, rear roller reductor 142 are packed on the reductor bearing 15; Described motor; Be that front roller servomotor 111, preceding middle roller servomotor 121, back middle roller servomotor 131 and rear roller servomotor 141 are independent servo motor; And respectively by the AC servo driving governor of described Digitizing And Control Unit, i.e. front roller AC servo driving governor 531, preceding middle roller AC servo driving governor 532, back middle roller AC servo driving governor 533 and 534 drivings of rear roller AC servo driving governor and control.
The concrete structure of four roller drafting mechanisms of embodiment is: in drafter; Front roller reductor 112 is installed on the reductor bearing 15 fixed; The input hole mechanical connection of the output shaft of front roller servomotor 111 and front roller reductor 112; The output shaft of front roller reductor 112 is connected with an end of preceding connecting axle 114 through preceding shaft coupling 113, and front roller Hooks coupling universal coupling 115 1 ends are connected with preceding connecting axle 114, and the other end is connected with front roller 11; Preceding middle roller reductor 122 is installed on the reductor bearing 15 fixed; The output shaft of preceding middle roller servomotor 121 and the input hole mechanical connection of preceding middle roller reductor 122; The output shaft of preceding middle roller reductor 122 shaft coupling 123 in preceding is connected with an end of preceding middle connecting axle 124; Preceding middle roller Hooks coupling universal coupling 125 1 ends are connected with preceding middle connecting axle 124, and the other end is connected with preceding middle roller 12; Back middle roller reductor 132 is installed on the reductor bearing 15 fixed; The input hole mechanical connection of the output shaft of back middle roller servomotor 131 and back middle roller reductor 132; The output shaft of back middle roller reductor 132 through after in shaft coupling 133 and the back end of connecting axle 134 be connected; Connecting axle 134 is connected in back middle roller Hooks coupling universal coupling 135 1 ends and the back, and the other end is connected with back middle roller 13; Rear roller reductor 142 is installed on the reductor bearing 15 fixed; The input hole mechanical connection of the output shaft of rear roller servomotor 141 and rear roller reductor 142; The output shaft of rear roller reductor 142 through after shaft coupling 143 with the back connecting axle 144 an end be connected; Rear roller Hooks coupling universal coupling 145 1 ends are connected with back connecting axle 144, and the other end is connected with rear roller 14.During machine run, front roller servomotor 111 is through front roller reductor 112, preceding shaft coupling 113, preceding connecting axle 114 and front roller Hooks coupling universal coupling 115 transmission front rollers 11; Before middle roller servomotor 121 through preceding middle roller reductor 122, preceding in shaft coupling 123, preceding in connecting axle 124 and the preceding middle roller 12 of preceding middle roller Hooks coupling universal coupling 125 transmissions; Back middle roller servomotor 131 through connecting axle 134 in shaft coupling 133, the back in back middle roller reductor 132, the back and back middle roller Hooks coupling universal coupling 135 transmissions after middle roller 13; Rear roller servomotor 141 is through rear roller reductor 142, back shaft coupling 143, back connecting axle 144 and rear roller Hooks coupling universal coupling 145 transmission rear rollers 14.
Four row rollers of the present invention are by the directly transmission separately of corresponding motor; Do not have complicated gear train assembly, not only mechanism is simple, and the fluctuation of speed that can avoid gear drive to cause; Help improving the stability and the accuracy of drafter, improve the quality of the bar that spins.The drafter of motor separate transmission of the present invention makes things convenient for adjusting process, and when changing sliver kind and drafting multiple, the rotating speed that only needs to change each corresponding motor can be realized, very helps small quantities of changeable test requirements document.The drafting multiple of drawing frame embodiment drafter of the present invention is designed to 2.75～17.6 times, can adapt to the demand of various Drawing Drafting Process; The manual adjustment of spacing of drawing rollers, simple in structure, convenient and swift.
Though drafter embodiment of the present invention is designed to four roller drafting mechanism systems, the design of the drafter of the mechanical structure of its roller servo drive system and motor drive roller is applicable to three roller drafting mechanism systems fully.
Described builder is by 111 transmissions of front roller servomotor; Connecting axle synchronous pulley 312 before before said, being equipped with on the connecting axle 114; Before connecting axle synchronous pulley 312 be with 311 to be connected synchronously with shaping synchronous pulley 312 ' through being shaped; Shaping synchronous pulley 312 ' is installed on the shaping connecting axle 313, shaping connecting axle 313 with after press roller 315 mechanical connections, after press roller 315 and press gear and before press roller 316 mechanical connections through a pair of.After press roller 315 and be main motion, through a pair of pressing pressing roller 316 before gears engaged is given transmission of power.
Further characteristic of the present invention is; Described builder also is fitted with shaping web mechanism; The structure of shaping web mechanism is on the shaping connecting axle 313 of said shaping sliver, to be equipped with initiatively to become net synchronous pulley 321, initiatively becomes net synchronous pulley 321 to be with 311 driven transmissions to become net synchronous pulley 321 ' synchronously through being shaped, and driven one-tenth net synchronous pulley 321 ' is installed on the coiling axle sleeve 323; Coiling axle sleeve 323 is installed on the frame, and through wireline reel 324 and circle bar cylinder 325 mechanical connections.
Drawing frame of the present invention has designed two kinds of output forms of shaping sliver and shaping web for adapting to the requirement of drafting sample fast testing.In other words, drawing frame of the present invention is according to the technological design needs, both can output sliver, also can export web.
When drawing process need be exported web, can be described shaping web mechanism equipped on.During operation, only need, and install circle bar cylinder 325 and get final product on coiling axle sleeve 323 and wireline reel 324 mechanical connections.
When drawing process needs output sliver, lay down shaping web mechanism and get final product.In the operation, only need coiling axle sleeve 323 is taken apart with wireline reel 324 mechanical connection places, shed wireline reel 324 and get final product with circle bar cylinder 325.
The concrete structure of embodiment of the invention builder is: the mechanical structure of shaping sliver is; Preceding connecting axle synchronous pulley 312 is installed on the preceding connecting axle 114; Shaping synchronous pulley 312 ' is installed on the shaping connecting axle 313; Shaping connecting axle 313 with after press roller 315 1 terminal tools and be connected, after press roller 315 and be main motion, through a pair of pressing pressing roller 316 before gears engaged is given transmission of power.During machine run; Front roller servomotor 111 successively through front roller reductor 112, preceding shaft coupling 113, preceding connecting axle 114, be shaped and be with 311 synchronously, press roller 315 after preceding connecting axle synchronous pulley 312, shaping synchronous pulley 312 ', shaping connecting axle 313 and 314 transmissions of shaping shaft coupling; After press roller 315 and be main motion; Through a pair of pressing pressing roller 316 before gears engaged is given transmission of power; The forward and backward roller top of pressing is equipped with and is pressed cover plate 318, and web is drawn after by the drafter drawing-off, after being placed in the horn mouth 317 that presses on the cover plate 318; Get into and forward and backward pressing press output sliver between the roller, sliver is sent in the circle bar tube 319 afterwards.
The mechanical structure of shaping web is: on the basis of said shaping sliver mechanical mechanism, and an equipped cover winding mechanism.The structure of winding mechanism is; Initiatively become net synchronous pulley 321 to be installed on the shaping connecting axle 313; Driven one-tenth net synchronous pulley 321 ' is installed on the coiling axle sleeve 323, coiling axle sleeve 323 and wireline reel 324 mechanical connections, circle bar cylinder 325 and wireline reel 324 mechanical connections.During machine run; Front roller servomotor 111 successively through front roller reductor 112, preceding shaft coupling 113, preceding connecting axle 114, be shaped and be with 311 synchronously, press roller 315 after preceding connecting axle synchronous pulley 312, shaping synchronous pulley 312 ', shaping connecting axle 313 and 314 transmissions of shaping shaft coupling; After press roller 315 and be main motion, through a pair of pressing pressing roller 316 before gears engaged is given transmission of power; Be installed in active on the shaping connecting axle become net synchronous pulley 321 through driven one-tenth net synchronous pulley 321 ', one-tenth net be with 322 synchronously, coiling axle sleeve 323, wireline reel 324 transmission circle bar cylinders 325.The forward and backward roller top of pressing is equipped with and is pressed cover plate 318, and web is drawn after by the drafter drawing-off, directly gets into forward and backward pressing between the roller via the oblong aperture of pressing on the cover plate 318, output web through pressing after, and be wound on and enclose on the bar cylinder 325.
The feed mechanism of drawing frame of the present invention is a prior art.Sliver 42 is drawn from bar tube 41, sends into drafter through conveyer belt 43.
The pressing mechanism of drawing frame of the present invention is a prior art.Embodiment adopts pressing spring 21 and pressurization transmission mechanism 22 to realize the pressurization of drafter.
Need to prove; The installation position speech of parts such as " forward and backward " of the present invention is the operation positions (face of keeping off a car) according to production line; Only has relativity; Perhaps only be in order to narrate conveniently, the uniqueness of not representing this installation site with must property, the concrete design of embodiment can be done nonessential suitable adjustment and variation fully as required.In addition, sliver of the present invention, web are extensive interpretation, and it comprises cotton type chemical fibre, undercoat, cast tow, short silk, the new fiber of other cotton types and blended sliver between them or fiber web, to satisfy drafting test demand.
The described Digitizing And Control Unit of drawing frame of the present invention comprises touch-screen 51, Programmable Logic Controller 52 and AC servo driving governor.Its control structure is: described front roller servomotor 111 is connected with Programmable Logic Controller 52 through front roller AC servo driving governor 531; Middle roller servomotor 121 is connected with Programmable Logic Controller 52 through preceding middle roller AC servo driving governor 532 before said; Back middle roller servomotor 131 through after middle roller AC servo driving governor 533 be connected with Programmable Logic Controller 52, said rear roller servomotor 141 is connected with Programmable Logic Controller 52 through rear roller AC servo driving governor 534.Said front roller servomotor 111, preceding middle roller servomotor 121, back middle roller servomotor 131 and rear roller servomotor 141 are independent servo motor; And respectively by the AC servo driving governor of described Digitizing And Control Unit, i.e. front roller AC servo driving governor 531, preceding middle roller AC servo driving governor 532, back middle roller AC servo driving governor 533 and 534 drivings of rear roller AC servo driving governor and control.Said builder is controlled through front roller AC servo driving governor 531 and Programmable Logic Controller 52 by described front roller servomotor 111.
The present invention adopts touch-screen 51 to be operation interface; Accomplish interactive function; Yarning process parameter such as drafting multiple, sliver exporting speed etc. are set; Send these technological parameters to Programmable Logic Controller 52 pairs of spinning process then and control, the real-time status that Programmable Logic Controller 62 will monitor or calculate is sent on the touch-screen 51 and shows.Described touch-screen 51 is control centres of Digitizing And Control Unit.Programmable Logic Controller 52 is connected with touch-screen 51; In the drafter; Programmable Logic Controller 52 is according to the yarning process parameter that is arranged in advance in the touch-screen 51; Like drafting multiple, sliver exporting speed etc.; Require to calculate the rotating speed of four row rollers according to corresponding transmission, carry out transfer of data then and between the corresponding AC servo driving governor (front roller AC servo driving governor 531, preceding middle roller AC servo driving governor 532, back middle roller AC servo driving governor 533, rear roller AC servo driving governor 534).Four the servomotors difference separate transmission four row rollers that are characterized as owing to drafter; So change the conversion that rotating speed of motor can realize drafting multiple; And can stepless adjustment roller rotating speed; Therefore the control of counter extensioin multiple is quite accurate, and then to also very accurate on the control theory of cotton strip quantity.
Claims (2)
1. digitlization drafting testing machine comprises feed mechanism, drafter, pressing mechanism, builder and is the Digitizing And Control Unit of operation interface with the touch-screen; Said drafter is three rollers or four roller drafting mechanisms, each the row roller that it is characterized in that said drafter by separately independently servo drive system constitute; Wherein, The mechanical structure of front roller servo drive system is: front roller is successively through the output shaft mechanical connection of front roller Hooks coupling universal coupling, preceding connecting axle and front roller reductor; The input hole of front roller reductor and front roller servomotor output shaft mechanical connection, the front roller reductor is packed on the reductor bearing; The middle roller of three roller drafting mechanisms and rear roller, perhaps the mechanical structure of the preceding middle roller of four roller drafting mechanisms, back middle roller and rear roller servo drive system is identical with the mechanical structure of said front roller servo drive system; Said each row roller servo drive system is driven and control by each corresponding in Digitizing And Control Unit roller AC servo driving governor respectively; Described builder is by the transmission of front roller servomotor; Connecting axle synchronous pulley before before said, being equipped with on the connecting axle; Band is connected with the shaping synchronous pulley preceding connecting axle synchronous pulley through being shaped synchronously; The shaping synchronous pulley is installed on the shaping connecting axle, the shaping connecting axle with after press the roller mechanical connection, after press roller and press gear and before press the roller mechanical connection through a pair of.
2. digitlization drafting testing machine according to claim 1; It is characterized in that described builder also is fitted with shaping web mechanism; The structure of shaping web mechanism is on said shaping connecting axle, to be equipped with initiatively to become the net synchronous pulley, and the band driven transmission becomes the net synchronous pulley through being shaped synchronously initiatively to become the net synchronous pulley, and driven one-tenth net synchronous pulley is installed in wireline reel and puts; The coiling axle sleeve is installed on the frame, and through wireline reel and circle bar cylinder mechanical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100689085A CN101962830B (en) | 2009-05-18 | 2009-05-18 | Digital drawing tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100689085A CN101962830B (en) | 2009-05-18 | 2009-05-18 | Digital drawing tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101962830A CN101962830A (en) | 2011-02-02 |
| CN101962830B true CN101962830B (en) | 2012-01-04 |
Family
ID=43515875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100689085A Expired - Fee Related CN101962830B (en) | 2009-05-18 | 2009-05-18 | Digital drawing tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101962830B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677239B (en) * | 2012-05-17 | 2014-12-24 | 绍兴文理学院 | Environment-friendly heather grey effect composite deformation filament yarn production process |
| CN102691149A (en) * | 2012-05-29 | 2012-09-26 | 青岛云龙纺织机械有限公司 | Digital drawing thin end sliver breaking device of drawing frame |
| CN105002606A (en) * | 2014-04-25 | 2015-10-28 | 苏州科技学院相城研究院 | Application of differential mechanism in textile machine |
| CN106192094A (en) * | 2015-05-03 | 2016-12-07 | 高梯学 | A kind of roller gear of ring throstle |
-
2009
- 2009-05-18 CN CN2009100689085A patent/CN101962830B/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 潘庆云等.数字化小样细纱机的开发.《天津工业大学学报》.2001,第26卷(第6期),7-9. * |
| 马崇启等.小样纺纱CAD&CAM***开发.《纺织学报》.2007,第28卷(第1期),23-24. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101962830A (en) | 2011-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101962830B (en) | Digital drawing tester | |
| CN203359675U (en) | Take-up machine | |
| CN106054692A (en) | Fiber winding system and automatic control method | |
| CN202099449U (en) | Improved multifunctional spinning frame | |
| CN101492844B (en) | Digitized rove testing machine | |
| CN103922186A (en) | Winding device and winding method for bipyramid forming of fine denier filaments | |
| CN107974737B (en) | Ring spinning drafting pressurization intelligent optimization system and method | |
| CN1446956A (en) | Fly frame with multiple electric motors controlled by microcomputers | |
| CN102691149A (en) | Digital drawing thin end sliver breaking device of drawing frame | |
| CN101962829A (en) | Digital combing tester | |
| CN102514981A (en) | Automatic filament coiling machine with two hexagonal wheels | |
| CN201012945Y (en) | Card clothing winding and arranging machine | |
| CN2903113Y (en) | Warp wafer separating multiaxis coiler | |
| CN203451691U (en) | Roving testing machine | |
| CN201540477U (en) | Automatic control device of doffer | |
| CN101041912A (en) | Gilling machine autolevelling apparatus | |
| CN210711915U (en) | Universal intelligent metal wire mesh loom for hanging beam and warp beam | |
| CN103708276B (en) | Open core rolling electric control system and control method | |
| CN102154744A (en) | Multifunctional improved spinning frame | |
| CN202279900U (en) | Individual coiling device of loom | |
| CN2647877Y (en) | Micro-computer controlling multi motor rover | |
| CN203393310U (en) | Complementary continuously variable draft multiple drafting mechanism | |
| CN209052833U (en) | A kind of digital single ingot double twisting testing machine | |
| CN208917377U (en) | A kind of two ingot rove testing machines | |
| CN219217059U (en) | Wire winder for preparing bio-based chemical fibers |
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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20120518 |