CN104259349A - Metal vibration absorber blank winding device - Google Patents

Metal vibration absorber blank winding device Download PDF

Info

Publication number
CN104259349A
CN104259349A CN201410396272.8A CN201410396272A CN104259349A CN 104259349 A CN104259349 A CN 104259349A CN 201410396272 A CN201410396272 A CN 201410396272A CN 104259349 A CN104259349 A CN 104259349A
Authority
CN
China
Prior art keywords
mandrel
nut
contact pin
metal damper
metal
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
Application number
CN201410396272.8A
Other languages
Chinese (zh)
Other versions
CN104259349B (en
Inventor
张乐
李安静
彭振洲
刘亚峰
余峰
陈尤平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Sanjiang Aerospace Yuanfang Technology Co Ltd
Original Assignee
Wuhan Sanjiang Aerospace Yuanfang Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan Sanjiang Aerospace Yuanfang Technology Co Ltd filed Critical Wuhan Sanjiang Aerospace Yuanfang Technology Co Ltd
Priority to CN201410396272.8A priority Critical patent/CN104259349B/en
Publication of CN104259349A publication Critical patent/CN104259349A/en
Application granted granted Critical
Publication of CN104259349B publication Critical patent/CN104259349B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a metal vibration absorber blank winding device comprising a first power mechanism and a second power mechanism. The output end of the first power mechanism is fixedly connected to a mandrel, and the outer circumference of the mandrel is provided with at least two circles of mandrel inserting needles; the output shaft of the second power mechanism is fixedly connected to the end of a screw of a nut-screw transmission mechanism, the nut of the nut-screw transmission mechanism is provided with a wire guide mechanism comprising a wire guide tube and a traction tube, the wire guide tube and the traction tube are coaxial, and the axis of the traction tube is perpendicular to that of the mandrel. The device is capable of implementing the spiral roll distance stretching and blanking winding in different directions, the purpose of metal vibration absorber blank weaving automation is further achieved, manual distance stretching and metal winding procedures are replaced, and product consistence and producing efficiency are improved significantly.

Description

Metal damper blank wind
Technical field
The present invention relates to the metal damper that can be widely used in the field such as Aero-Space, spacecraft, refer to a kind of metal damper blank wind particularly.
Background technology
Metal damper is made through multiple techniques such as helical coil winding, spacing stretching, blank braiding, punch formings by stainless steel metal wire, metal damper not only possesses the damping property of rubber shock absorber, simultaneously can high-low temperature resistant, corrosion-resistant etc., the special requirement of Aero-Space, spacecraft and civilian goods operating mode can be widely used in.But the complex manufacturing technology of metal damper, namely metal damper wind of the present invention is a kind of knit unit being applicable to metal damper blank weaving, the process of making blank of existing metal damper mainly contains hand woven and woven wire weaves automatically, use traditional-handwork preparation method by the human and material resources of at substantial, and efficiency is low and have inconsistency; And the automatic weaving of woven wire, being be rolled into metal damper blank after metal wire knitted being reticulated, often there is uneven problem of compacting in its green density, and easily occurs lamination.
Summary of the invention
Object of the present invention is exactly the deficiency that will solve above-mentioned background technology, provides a kind of and can replace the metal damper blank wind that traditional-handwork makes metal damper.
Technical scheme of the present invention is: a kind of metal damper blank wind, comprise power control box, it is characterized in that: output is installed in described power control box and is arranged in parallel and the first actuating unit rotated and the second actuating unit, the output of described first actuating unit is connected with mandrel by axle sleeve, the excircle of described mandrel is provided with the mandrel contact pin that at least two circles are wound around for wire spiral; The output of described second actuating unit is connected with screw rod one end of nut-screw transmission mechanism, the nut of described nut-screw transmission mechanism is installed with the thread guide mechanism stretched for metal spiral volume, the seal wire direction of described thread guide mechanism is vertical with the axis direction of mandrel.
In such scheme:
Described second actuating unit is provided with two covers, is arranged in parallel in the both sides of the first actuating unit respectively; Accordingly, described nut-screw transmission mechanism and on thread guide mechanism be also provided with two covers, be arranged in the both sides of mandrel.
Described mandrel is hollow communicating structure, the two ends of described mandrel are respectively arranged with drive end bearing bracket and rear end cap, the periphery of described mandrel radially at least offers two circle installing holes, the central shaft of each installing hole of same circle intersects on the central shaft of described mandrel, described mandrel inner chamber is filled with the packing material that can be passed by described mandrel contact pin, described mandrel contact pin is radially arranged in described installing hole, described mandrel contact pin wherein one section be plugged in described packing material.
Described mandrel is hollow cylindrical, and described drive end bearing bracket and rear end cap are fixed on the two ends of mandrel by interference fit.
Preferably, described mandrel contact pin one end is passed corresponding installing hole and is extended in packing material, and the described mandrel contact pin other end radially extends to mandrel exterior.
Preferably, described mandrel contact pin runs through packing material, and the two ends of described mandrel contact pin pass installing hole respectively and radially extend to mandrel exterior.
The installing hole number of turns that the periphery of described mandrel is offered is even numbers.
Described thread guide mechanism comprises the basic framework on the nut being fixedly mounted on nut-screw transmission mechanism, described basic framework is provided with wire leading pipe away from the side of mandrel, described basic framework is provided with traction tube near the side of mandrel, and described wire leading pipe is coaxial and vertical with the axis direction of mandrel with the axial line of traction tube.
Described basic framework comprises gripper shoe and U-shaped plate, described gripper shoe is fixedly mounted on the nut of nut-screw transmission mechanism, described U-shaped plate comprises middle pectoral plate and wing plates on two sides, described middle pectoral plate is fixing on the supporting plate, described wing plates on two sides offers the through hole of concentricity axle, described wire leading pipe is embedded in the through hole away from the wing plate of mandrel side, and described traction tube is embedded in the through hole of the wing plate of mandrel side.
Described wire leading pipe comprises sleeve and inner core, and described inner core cover is contained in sleeve, and described inner core offers the first through hole along axis, and described first through-hole aperture is less than metal spiral volume external diameter; Described traction tube offers the second through hole along axis, and described second through-hole aperture is greater than metal spiral volume external diameter.
First actuating unit band moving mandrel of the present invention rotates, and provides power for helical coil spacing stretches; And the second actuating unit is by the transmission of nut-screw transmission mechanism, thread guide mechanism can be made to do linear reciprocating motion; The present invention in use, one end of helical coil is also fixedly woven in through thread guide mechanism on the mandrel contact pin of a wherein circle in advance, after mandrel rotates, helical coil is driven constantly to be less than the wire leading pipe of helical coil external diameter by diameter, utilize the tube wall of wire leading pipe and the frictional force of helical coil to carry out balanced spiral and roll up the pulling force after stretching, by controlling the endoporus aperture of wire leading pipe, coordinate helical coil external diameter, can by helical coil spacing stretching different length; After helical coil spacing stretches, helical coil is in mandrel rotation and thread guide mechanism rectilinear movement process, and helical coil is stretched as spring wire and automatic winding forms metal damper blank on mandrel.By controlling mandrel velocity of rotation and thread guide mechanism translational velocity, the object of the mesh shape manufacturing different metal shock absorber blank can be realized.
Metal damper blank wind of the present invention, the spacing that can realize helical coil stretches, blank different directions is wound around, and then realize the object of metal damper blank braiding automation, to replace, manual constant pitch stretches, metal winding working procedure, significantly improves homogeneity of product and production efficiency.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is that in the present invention, mandrel arranges schematic diagram;
Fig. 3 is thread guide mechanism schematic diagram in the present invention;
Fig. 4 is the side view of Fig. 3;
Fig. 5 is that after becoming spring wire after helical coil stretches, order is wound around schematic diagram;
Fig. 6 becomes cross winding schematic diagram after spring wire after helical coil stretches.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
With reference to figure 1, a kind of metal damper blank wind of the present embodiment, it comprises power control box 8, three actuating units are provided with in this power control box 8, be respectively first actuating unit and two the second actuating units, wherein the first actuating unit is between two the second actuating units, and the first actuating unit and the second actuating unit are drive motors, the output of all drive motors all passes control cabinet 1, and the output of all drive motors is all arranged in parallel and can rotates.
With reference to figure 2, the output shaft of first actuating unit of the present embodiment is fixedly connected with mandrel 1 by axle sleeve 9, mandrel 1 is hollow communicating structure, and the two ends of mandrel 1 are respectively arranged with drive end bearing bracket 1.1 and rear end cap 1.2, and drive end bearing bracket 1.1 and rear end cap 1.2 are fixed on the two ends of mandrel 1 by interference fit, the periphery of mandrel 1 radially at least offers two circles for installing the installing hole 1.4 of mandrel contact pin 2, mandrel contact pin 2 is enclosed because single metal shock absorber makes needs two, therefore, the number of turns of installing hole 1.4 should be even numbers circle, the central shaft of each installing hole 1.4 of same circle intersects on the central shaft of mandrel 1, mandrel 1 inner chamber is filled with the packing material 1.3 that can be passed by mandrel contact pin 2, packing material 1.3 can elect cotton material as, elastomeric material, magnetic material etc., mandrel contact pin 2 is radially arranged in installing hole 1.4, mandrel contact pin 2 wherein one section must ensure to be plugged in packing material 1.3, the object of such design is that can to realize mandrel contact pin 2 quick, stable installation: mandrel contact pin 2 can conveniently load in mandrel installing hole 1.4, in mandrel 1, mandrel contact pin 2 is fixed rapidly by packing material 1.3 simultaneously, mandrel contact pin 2 difficult drop-off, can conveniently pull down simultaneously, improve product stability.
The mode that plugs of mandrel contact pin 2 has two kinds: one, mandrel contact pin 2 one end is passed corresponding installing hole 1.4 and extended in packing material 1.3, and mandrel contact pin 2 other end radially extends to mandrel 1 outside; Two, mandrel contact pin 2 runs through packing material 1.3, and the two ends of mandrel contact pin 2 pass installing hole 1.4 respectively and radially extend to mandrel 1 outside.
The present embodiment is connected with screw rod one end end winding support of a nut-screw transmission mechanism 3 in the equal correspondence of the output of each the second actuating unit, the screw rod end correspondence of this side nut-screw transmission mechanism 3 is sleeved on being fixedly connected with both realizing in the output shaft of the second actuating unit, and the screw rod other end end of nut-screw transmission mechanism 3 supports by supporting walls 12.The nut of nut-screw transmission mechanism 3 is provided with thread guide mechanism 4, when the second actuating unit or rotary work, drives thread guide mechanism 4 to do straight line back and forth movement by nut-screw transmission mechanism 3.The thread guide mechanism 4 of the present embodiment comprises the basic framework 5 be fixedly installed on nut-screw transmission mechanism 3 output and nut, basic framework 5 is installed with the thread guide mechanism 4 stretched for metal spiral volume 13, the seal wire direction of thread guide mechanism 4 is vertical with the axis direction of mandrel 1.
With reference to figure 3 and Fig. 4, the basic framework 5 of the present embodiment comprises gripper shoe 10 and U-shaped plate 11, gripper shoe 10 is fixedly mounted on the nut of nut-screw transmission mechanism 3, U-shaped plate 11 comprises middle pectoral plate 11.1 and wing plates on two sides 11.2,11.3, middle pectoral plate 11.1 is fixed in gripper shoe 10, wing plates on two sides 11.2,11.3 offers the through hole of concentricity axle, wire leading pipe 6 is embedded in the through hole away from the wing plate 11.2 of mandrel 1 side, and traction tube 7 is embedded in the through hole of the wing plate 11.3 of mandrel 1 side.
Above-mentioned wire leading pipe 6 comprises sleeve 6.1 and inner core 6.2, and inner core 6.2 is sleeved in sleeve 6.1, and inner core 6.1 offers the first through hole along axis, and the first through-hole aperture is less than metal spiral and rolls up 13 external diameters; And traction tube 7 offers the second through hole along axis, the second through-hole aperture is greater than metal spiral and rolls up 13 external diameters.
First actuating unit band moving mandrel 1 of embodiment rotates, and provides power for helical coil spacing stretches; And the second actuating unit is by nut-screw transmission mechanism 3 mechanism driving, corresponding thread guide mechanism 4 can be made to do linear reciprocating motion.
The present embodiment in use, one end of helical coil is in advance through on the thread guide mechanism 4 also fixing wherein mandrel contact pin 2 enclosed woven, after mandrel 1 rotates, helical coil is driven constantly to be less than the wire leading pipe 6 of helical coil external diameter by diameter, utilize the tube wall of wire leading pipe 6 and the frictional force of helical coil to carry out balanced spiral and roll up the pulling force after stretching, by controlling the endoporus aperture of wire leading pipe 6, coordinate helical coil external diameter, can by helical coil spacing stretching different length; After helical coil spacing stretches, helical coil is in mandrel 1 rotation and thread guide mechanism 4 rectilinear movement process, and helical coil is stretched as spring wire and automatic winding forms metal damper blank on mandrel 1.
When each actuating unit in power control box 8 does not start, helical coil is through after thread guide mechanism 4, helical coil can carry out blank establishment, the mandrel contact pin 2 such as enclosing each circle in mandrel contact pins 2 for making two on same shock absorber is 12, be positioned at mandrel contact pin 2 called after 0H ~ 11H (anchor point as on front side of blank) respectively of front side, be positioned at mandrel contact pin 2 called after 0L ~ 11L (anchor point as on rear side of blank) respectively of rear side, after helical coil is stretched by thread guide mechanism spacing, spring wire after stretching is wrapped in 0H ~ 11H, on 0L ~ 11L, spring wire can be wound in different latticed, spring wire order such as shown in Fig. 5 is wound around and the cross winding shown in Fig. 6, after spring wire has been wound around, by controlling the translational velocity of mandrel 1 velocity of rotation and thread guide mechanism 4, spring wire after stretching, namely angle that can be different, spacing is wrapped on mandrel contact pin 5, complete the establishment of different mesh metal shock absorber blank.
Compared with the prior art, the advantage of the present embodiment is:
1, blank braiding automation can be realized: the helical coil that wire is made is after conduit, be wrapped on blank mandrel, by rotation mandrel and movable wire guide mechanism, the spacing realizing helical coil stretches, blank different directions is wound around, and then instead of the stretching of manual constant pitch, metal winding working procedure, significantly improve homogeneity of product and production efficiency;
2, at metal damper blank winding process, by controlling mandrel velocity of rotation, thread guide mechanism translational velocity, the different open weave objects of blank can be realized, changing shock absorber damping property, making blank more compact simultaneously, evenly.

Claims (10)

1. a metal damper blank wind, comprise power control box (8), it is characterized in that: output is installed in described power control box (8) and is arranged in parallel and the first actuating unit rotated and the second actuating unit, the output of described first actuating unit is connected with mandrel (1) by axle sleeve (9), the excircle of described mandrel (1) is provided with at least two and encloses the mandrel contact pin (2) be wound around for wire spiral (13); The output of described second actuating unit is connected with screw rod one end of nut-screw transmission mechanism (3), the nut of described nut-screw transmission mechanism (3) is installed with the thread guide mechanism (4) stretched for metal spiral volume (13), the seal wire direction of described thread guide mechanism (4) is vertical with the axis direction of mandrel (1).
2. metal damper blank wind according to claim 1, is characterized in that: described second actuating unit is provided with two covers, is arranged in parallel in the both sides of the first actuating unit respectively; Accordingly, described nut-screw transmission mechanism (3) and on thread guide mechanism (4) be also provided with two covers, be arranged in the both sides of mandrel (1).
3. metal damper blank wind according to claim 1 and 2, it is characterized in that: described mandrel (1) is hollow communicating structure, the two ends of described mandrel (1) are respectively arranged with drive end bearing bracket (1.1) and rear end cap (1.2), the periphery of described mandrel (1) radially at least offers two circle installing holes (1.4), the central shaft of each installing hole (1.4) of same circle intersects on the central shaft of described mandrel (1), described mandrel (1) inner chamber is filled with the packing material (1.3) that can be passed by described mandrel contact pin (2), described mandrel contact pin (2) is radially arranged in described installing hole (1.4), described mandrel contact pin (2) wherein one section be plugged in described packing material (1.3).
4. metal damper blank wind according to claim 3, it is characterized in that: described mandrel (1) is in hollow cylindrical, and described drive end bearing bracket (1.1) and rear end cap (1.2) are fixed on the two ends of mandrel (1) by interference fit.
5. metal damper blank wind according to claim 3, it is characterized in that: described mandrel contact pin (2) one end is through corresponding installing hole (1.4) and to the middle extension of packing material (1.3), described mandrel contact pin (2) other end radially extends to mandrel (1) outside.
6. metal damper blank wind according to claim 3, it is characterized in that: described mandrel contact pin (2) runs through packing material (1.3), and the two ends of described mandrel contact pin (2) pass installing hole (1.4) respectively and radially extend to mandrel (1) outside.
7. metal damper blank wind according to claim 3, is characterized in that: installing hole (1.4) number of turns that the periphery of described mandrel (1) is offered is even numbers.
8. metal damper blank wind according to claim 1 and 2, it is characterized in that: described thread guide mechanism (4) comprises the basic framework (5) on the nut being fixedly mounted on nut-screw transmission mechanism (3), described basic framework (5) is provided with wire leading pipe (6) away from the side of mandrel (1), described basic framework (5) is provided with traction tube (7) near the side of mandrel (1), and described wire leading pipe (6) is coaxial and vertical with the axis direction of mandrel (1) with the axial line of traction tube (7).
9. metal damper blank wind according to claim 8, it is characterized in that: described basic framework (5) comprises gripper shoe (10) and U-shaped plate (11), described gripper shoe (10) is fixedly mounted on the nut of nut-screw transmission mechanism (3), described U-shaped plate (11) comprises middle pectoral plate (11.1) and wing plates on two sides (11.2, 11.3), described middle pectoral plate (11.1) is fixed in gripper shoe (10), described wing plates on two sides (11.2, 11.3) through hole of concentricity axle is offered on, described wire leading pipe (6) is embedded in the through hole away from the wing plate (11.2) of mandrel (1) side, described traction tube (7) is embedded in the through hole of the wing plate (11.3) of mandrel (1) side.
10. metal damper blank wind according to claim 8, it is characterized in that: described wire leading pipe (6) comprises sleeve (6.1) and inner core (6.2), described inner core (6.2) is sleeved in sleeve (6.1), described inner core (6.1) offers the first through hole along axis, and described first through-hole aperture is less than metal spiral volume (13) external diameter; Described traction tube (7) offers the second through hole along axis, and described second through-hole aperture is greater than metal spiral volume (13) external diameter.
CN201410396272.8A 2014-08-13 2014-08-13 Metal damper blank wind Active CN104259349B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410396272.8A CN104259349B (en) 2014-08-13 2014-08-13 Metal damper blank wind

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410396272.8A CN104259349B (en) 2014-08-13 2014-08-13 Metal damper blank wind

Publications (2)

Publication Number Publication Date
CN104259349A true CN104259349A (en) 2015-01-07
CN104259349B CN104259349B (en) 2016-06-15

Family

ID=52150994

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410396272.8A Active CN104259349B (en) 2014-08-13 2014-08-13 Metal damper blank wind

Country Status (1)

Country Link
CN (1) CN104259349B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110788248A (en) * 2019-10-11 2020-02-14 东北石油大学 Metal rubber integrated automatic molding system
CN110788260A (en) * 2019-10-11 2020-02-14 东北石油大学 Winding and forming device for metal rubber forming system
CN111136201A (en) * 2020-01-03 2020-05-12 北京强度环境研究所 Winding device of spiral coil stretching and winding system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0860218A2 (en) * 1997-02-14 1998-08-26 Eurobend Sa Method and device for producing continuous spirals with closed polygon forms from wire, concrete steel or metal tube
CN201076894Y (en) * 2007-07-03 2008-06-25 天津市塑料研究所 Metal guidewire spiral winding apparatus
WO2009104157A1 (en) * 2008-02-21 2009-08-27 Gricor Impianti S.R.L. Support device for bars in machines for manufacturing metal cages
CN101780511A (en) * 2009-03-19 2010-07-21 叶超英 Method and device for producing spring bed core full-automatically
CN203076501U (en) * 2012-12-31 2013-07-24 浙江浦江缆索有限公司 Large spring forming device
CN203253848U (en) * 2013-05-28 2013-10-30 于法周 Winding device of steel cord

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0860218A2 (en) * 1997-02-14 1998-08-26 Eurobend Sa Method and device for producing continuous spirals with closed polygon forms from wire, concrete steel or metal tube
CN201076894Y (en) * 2007-07-03 2008-06-25 天津市塑料研究所 Metal guidewire spiral winding apparatus
WO2009104157A1 (en) * 2008-02-21 2009-08-27 Gricor Impianti S.R.L. Support device for bars in machines for manufacturing metal cages
CN101780511A (en) * 2009-03-19 2010-07-21 叶超英 Method and device for producing spring bed core full-automatically
CN203076501U (en) * 2012-12-31 2013-07-24 浙江浦江缆索有限公司 Large spring forming device
CN203253848U (en) * 2013-05-28 2013-10-30 于法周 Winding device of steel cord

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110788248A (en) * 2019-10-11 2020-02-14 东北石油大学 Metal rubber integrated automatic molding system
CN110788260A (en) * 2019-10-11 2020-02-14 东北石油大学 Winding and forming device for metal rubber forming system
CN110788248B (en) * 2019-10-11 2020-12-22 东北石油大学 Metal rubber integrated automatic molding system
CN111136201A (en) * 2020-01-03 2020-05-12 北京强度环境研究所 Winding device of spiral coil stretching and winding system

Also Published As

Publication number Publication date
CN104259349B (en) 2016-06-15

Similar Documents

Publication Publication Date Title
CN104259349A (en) Metal vibration absorber blank winding device
CN203428656U (en) Steel bar pay-off reel
EP2786816B1 (en) Tube expanding drum machine
CN204150818U (en) A kind of device being wound around continuous sheet on flexible parent metal
CN204384627U (en) A kind of novel yarn cylinder
CN203726903U (en) Automatic expansion and contraction mold device for fiber drum rolling
CN209226240U (en) A kind of aluminum foil rewinding machine of easy-unloading
CN206127545U (en) Yarn frame that can open and shut
CN108975064A (en) A kind of coiling apparatus for textile threads boundling
CN206521147U (en) It is a kind of electronic around chain machine
CN202749223U (en) Universal winding gear for three-dimensional wound core of oil-immersed transformer
CN103295773B (en) A kind of clamping mechanism and install coil winding machine and the foil winding equipment of this clamping mechanism
CN203612701U (en) Screen taking-off device for metal screen weaving machine
CN103449251A (en) Wattle winding machine
CN104495528B (en) A kind of sebific duct coiling machine
CN203621348U (en) Wire mesh braiding machine
CN105291317A (en) Cylindrical die with variable external diameter
CN210824824U (en) Pneumatic creel overhead Y-shaped textile spool winder
CN203904595U (en) Overweight cloth rolling device
CN208261755U (en) Plane galvanized hexagonal wire mesh automatic knitting machine
CN207971350U (en) A kind of silk box adjusting apparatus of metal mesh braider
CN204663363U (en) A kind of fire curtain applying tubular motor
CN201877220U (en) Multi-head glass fiber covering machine
CN202239389U (en) Novel environmentally-friendly clean ball equipment
CN104370168A (en) Device for winding continuous sheet on flexible base material and winding machining method

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