CN206376095U - Sewing machine for sewing Telescopic trouser-waist - Google Patents

Sewing machine for sewing Telescopic trouser-waist Download PDF

Info

Publication number
CN206376095U
CN206376095U CN201621264098.2U CN201621264098U CN206376095U CN 206376095 U CN206376095 U CN 206376095U CN 201621264098 U CN201621264098 U CN 201621264098U CN 206376095 U CN206376095 U CN 206376095U
Authority
CN
China
Prior art keywords
sliding block
waist
location
block
plate
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.)
Active
Application number
CN201621264098.2U
Other languages
Chinese (zh)
Inventor
何吉云
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.)
Shenzhen Round Cxs Garment Co Ltd
Original Assignee
Shenzhen Round Cxs Garment 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 Shenzhen Round Cxs Garment Co Ltd filed Critical Shenzhen Round Cxs Garment Co Ltd
Priority to CN201621264098.2U priority Critical patent/CN206376095U/en
Application granted granted Critical
Publication of CN206376095U publication Critical patent/CN206376095U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of sewing machine for being used to sew Telescopic trouser-waist, sewing machine and extending apparatus including panel and on panel, extending apparatus includes the tightening mechanism for the location-plate and tensioner Telescopic trouser-waist being fixed on panel, tightening mechanism includes sliding block, fixed block and it is individually fixed in sliding block, stretching component on fixed block, fixed block is fixedly connected on location-plate, sliding block horizontal sliding is connected on location-plate, the upper surface of location-plate is provided with the rack along location-plate length direction, the lower surface of sliding block rotates the gear that connection is engaged with rack, the side of gear is located at the operation handle for deviateing gear axis, sliding block is provided with the fixation kit for preventing pinion rotation, tightening mechanism is adjusted in the horizontal direction can meet the demand for sewing various sizes of annular elastic band;By using extending apparatus, spend less process just can complete the waist of trousers suture with elastic band, simple to operate, operating efficiency is high, greatly improves economic benefit.

Description

Sewing machine for sewing Telescopic trouser-waist
Technical field
The utility model is related to sewing machine technique field, more specifically, it relates to which a kind of be used to sew Telescopic trouser-waist Sewing machine.
Background technology
Current clothing making is largely formed by stitching sewing machine, and with the continuous improvement of living standard, people are to clothes The requirement of the sewing quality of dress, wearing comfort and aesthetic measure is also improved therewith.For sewing common cloth, its opposite joint Technical requirements processed are not high, but when sewing flexible cloth, then need first to make elastic band in tensioner state again will The elastic band of tensioner is sutured with clothes.In this case, if the artificial operation of simple dependence often occurs that sewing is uneven Phenomenon, also easily there is fatigue in and long-time stretching elastic band, operating personnel.
At present, Publication No. CN205347716U Chinese patent discloses a kind of sewing of elastic type waist of trousers creases and set Standby, the sewing device aims to solve the problem that elastic type waist of trousers creases sewing cost is high in the prior art, the problem of precision is low, including installs Sewing machine and extending apparatus on panel, extending apparatus include being fixed on elastic type trousers described in the detent mechanism and tensioner of panel The adjustment mechanism of waist, the detent mechanism includes guided way, and the adjustment mechanism includes the length adjustment structure of adjustment waist of trousers tension force Part and the position adjustment means of adjustment waist of trousers position, the corresponding two ends installed in the guided way of difference, the sewing device Beneficial effect is:It is whole using single guide rail, it is to avoid split type guide rail is brought in the prior art the location difficulty installed Individual sewing device adapts to the waist of trousers of each size and is conveniently adjusted;It can be improved on the basis of existing flat seam machine, greatly Saving cost.
But, the sewing device is when sewing various sizes of annular elastic band, because design is more heavy, largely On limit the operating efficiency of operating personnel.
Utility model content
The purpose of this utility model be to provide it is a kind of be used to sew the sewing machine of Telescopic trouser-waist, with easy to operate excellent Point.
Above-mentioned technical purpose of the present utility model technical scheme is that:One kind is used to sew and can stretch The sewing machine of the contracting waist of trousers, including panel and sewing machine and extending apparatus on panel, the extending apparatus include solid The location-plate and the tightening mechanism of tensioner Telescopic trouser-waist being scheduled on panel, the tightening mechanism include sliding block, fixed block and Sliding block, the stretching component on fixed block are individually fixed in, the fixed block is fixedly connected on location-plate, and the sliding block level is slided Shifting is connected on location-plate, and the upper surface of the location-plate is provided with the rack along location-plate length direction, the following table of the sliding block Face is rotatably connected to the gear being engaged with rack, and the side of the gear is described located at the operation handle for deviateing gear axis Sliding block is provided with the fixation kit for preventing pinion rotation.
By using above-mentioned technical proposal, tightening mechanism is adjusted in the horizontal direction can meet the different sizes of sewing Annular elastic band demand;It is adjusted in tightening mechanism, gear scroll forward and backward on rack is made by rotating operation handle, And then the front and rear sliding on location-plate with movable slider, from sliding block to the close or remote purpose of fixed block, reach and fix respectively The purpose changed in the distance between stretching component on sliding block, fixed block, makes the annular elastic band for being placed on stretching component Reach tensioned state;After the position adjustment of sliding block is good, pinion rotation is prevented by fixation kit, and then it is fixed to be fixed on sliding block It can not be moved on the plate of position, so annular elastic band remains the state tightened during suture;By using prolonging Extending apparatus, spends less process just can complete the waist of trousers suture with elastic band, simple to operate, operating efficiency is high, significantly Improve economic benefit.
It is preferred that, the upper surface of the location-plate is provided with the chute slid for sliding block, and the sliding block inserts the end of chute Provided with barrier block, the madial wall of the chute is provided with the barrier groove for the sliding of barrier block.
By using above-mentioned technical proposal, chute barrier is in the both sides of sliding block, and barrier groove barrier is in barrier block, and barrier block Sliding block is firmly attached to, and then the free degree of sliding block vertical direction is limited by chute and barrier groove, so that sliding block is only capable of fixed The horizontal direction sliding of position plate, so operating personnel adjust between sliding block and fixed block apart from when, tightening mechanism is difficult a left side The right side teetertotters, and adds the stability of the tightening mechanism.
It is preferred that, the side wall of the sliding block is provided with the arc rib along chute direction.
By using above-mentioned technical proposal, when sliding block slides in chute, make the interior of arc rib on sliding block and chute Side wall offsets, and then reduces the contact area between sliding block and chute, reduces the frictional force that sliding block slides in chute, and then Operating personnel adjust two tightening mechanisms apart from when, sliding block slides before and after being easier in chute, with labour-saving effect.
It is preferred that, the end of the operation handle is socketed with soft rubber set.
By using above-mentioned technical proposal, soft rubber set can make operating personnel in rotating operation handle, it is to avoid operation Personnel, which are directly held in the operation handle of hardness, to do hand to ache, meanwhile, soft rubber set can increase between hand and operation handle Frictional force, be easy to operating personnel to sliding block in chute before and after slide.
It is preferred that, the fixation kit includes the contiguous block for being fixed on sliding block side, the screwed hole being arranged on contiguous block And the threaded rod coordinated with screwed hole screw thread, and can make the end of threaded rod and the side phase of gear by twisting threaded rod Support, there is gap between the contiguous block and operation handle.
By using above-mentioned technical proposal, after the position adjustment of sliding block is good, its end is pressed on by turning threaded rod The side of gear, and then gear is fixed on sliding block, the situation that gear is rolled on rack is reduced, and then reduce sliding block The situation of sliding before and after in chute;When needing to adjust the position of sliding block, make its end and the side of gear by turning threaded rod Face is separated, and rotating operation handle just can be such that sliding block is slid on location-plate;Between existing between contiguous block and operation handle Gap, can reduce the operation handle situation that contiguous block causes to stop to operation handle in rotation.
It is preferred that, the side wall of the sliding block is provided with the mounting groove installed for contiguous block.
By using above-mentioned technical proposal, contiguous block is fixed in mounting groove, contiguous block can be reduced and protrude slider table Situation about impacting is rotated in face of operation handle.
It is preferred that, the stretching component includes support column and two support rollers being fixed on support column, the support It is perpendicular between roller and the support column.
By using above-mentioned technical proposal, annular elastic band is placed in support roller, when suture, annular elastic band energy It is enough to be rolled in support roller so that annular elastic band, which is rotated, to be more prone to, and be easy to suture annular elastic band and cloth.
It is preferred that, the support column is provided with the through hole passed through for support roller, and the support roller is set through one end of through hole There is screw rod, the both sides that the screw rod is located at support column are socketed with the nut coordinated with screw flight.
By using above-mentioned technical proposal, the cooperation of screw rod and nut can make on support roller fixation and support column more It is firm;Position on through hole is located at by adjustable supporting roll, makes the plane of support roller composition of two support column upper ends with being somebody's turn to do Sewing machine table upper end is parallel, the suture of annular elastic band and cloth can be made more to facilitate, additionally it is possible to improve sewing Quality.
In summary, the utility model has the advantages that:Tightening mechanism is adjusted in the horizontal direction can be with Meet the demand of the various sizes of annular elastic band of sewing;It is adjusted in tightening mechanism, gear is made by rotating operation handle The scroll forward and backward on rack, and then the front and rear sliding on location-plate with movable slider, it is close or remote to fixed block from sliding block Purpose, reaches and is individually fixed in the purpose that the distance between sliding block, stretching component on fixed block change, make to be placed on stretching The annular elastic band of component reaches tensioned state;After the position adjustment of sliding block is good, pinion rotation is prevented by fixation kit, entered And sliding block is fixed on location-plate can not be moved, so annular elastic band remains what is tightened during suture State;By using extending apparatus, spend less process just can complete the waist of trousers suture with elastic band, it is simple to operate, Operating efficiency is high, greatly improves economic benefit.
Brief description of the drawings
Fig. 1 is the structural representation of the present embodiment;
Fig. 2 is the schematic diagram of extending apparatus in the present embodiment;
Fig. 3 is the enlarged drawing of part A in Fig. 2;
Fig. 4 is the side view of extending apparatus in the present embodiment.
In figure:1st, panel;2nd, sewing machine;3rd, extending apparatus;31st, location-plate;32;Sliding block;33rd, fixed block;34th, stretching group Part;341st, support column;342nd, support roller;4th, rack;5th, gear;6th, operation handle;7th, fixation kit;71st, contiguous block;72nd, spiral shell Pit;73rd, threaded rod;8th, chute;9th, barrier block;10th, barrier groove;11st, rib;12nd, soft rubber set;13rd, mounting groove;14、 Through hole;15th, screw rod;16th, nut;17th, column;18th, operating platform.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but As long as all being protected in right of the present utility model by Patent Law.
A kind of sewing machine for being used to sew Telescopic trouser-waist, as shown in figure 1, including panel 1, the upper surface of panel 1 is installed There is sewing machine 2, sewing machine 2 raises sewing machine 2 by two root posts 17, and is bolted, and then make the behaviour of sewing machine 2 Make platform 18 higher than panel 1;The upper surface of panel 1 has been bolted extending apparatus 3, and extending apparatus 3 is located at operating platform 18 lower section, and direction of advance is parallel when being sutured with sewing machine 2.
As shown in Fig. 2 extending apparatus 3 includes the tightening mechanism of location-plate 31 and tensioner Telescopic trouser-waist, wherein, location-plate 31 is elongated, and is made of stainless steel;Tightening mechanism includes sliding block 32 and fixed block 33, and fixed block 33 is bolted on One end of the upper surface of location-plate 31, sliding block 32 slides the upper surface for being connected to location-plate 31 so that sliding block 32 can be in location-plate Slid on 31 along along the length direction of location-plate 31;Fixed block 33 and sliding block 32 are made of stainless steel, fixed block 33 and sliding block 32 Side be threadably secured stretching component 34 respectively, two stretching components 34 are open-shaped from top to bottom.
Stretching component 34 is included on the support column 341 for being individually fixed in fixed block 33 and sliding block 32, each support column 341 It is provided with two through holes 14 for running through support column 341, through hole 14 and support roller 342 is installed, and support roller 342 and support column 341 It is mutually perpendicular to, one end of support roller 342 is integrally formed with screw rod 15, and the both sides that screw rod 15 is located at support column 341 are threadedly coupled There is nut 16, support roller 342 is fixed on support column 341 by the cooperation of screw rod 15 and nut 16, pass through adjustable supporting roll 342 are located at the position on through hole 14, put down the operation in the plane and Fig. 1 that the support roller 342 of two upper ends of support column 341 constitutes The upper surface of platform 18 is parallel, the suture of annular elastic band and cloth can be made more to facilitate, additionally it is possible to improve the quality of sewing.
As shown in figure 3, the upper surface of location-plate 31 is bolted the rack 4 along the length direction of location-plate 31, it is sliding The lower surface of block 32 is provided with the gear 5 for being socketed with and being engaged with rack 4 in rotating shaft, rotating shaft, and rotating shaft is located at the axle of gear 5 The heart;Deviate the axle center of gear 5 integrally formed with operation handle 6, operation handle 6 in the side of gear 5;Operation handle 6 is away from gear 5 End is socketed with soft rubber set 12, and operating personnel is held in soft rubber and covers 12 rotating operation handles 6, can conveniently make gear 5 Rolled on rack 4, and then make to move forward and backward on length direction of the sliding block 32 along location-plate 31.
The side of sliding block 32 is provided with the fixation kit 7 for preventing gear 5 from rotating, so that gear 5 is stuck on rack 4, it is right Sliding block 32 is limited in the length direction of location-plate 31;Fixation kit 7 includes being fixed on the contiguous block 71 of the side of sliding block 32, run through The screwed hole 72 of contiguous block 71 and the threaded rod 73 coordinated with the screw thread of screwed hole 72, wherein, the side wall of sliding block 32 is provided with installation Groove 13, contiguous block 71 is bolted in mounting groove 13, and there is gap between contiguous block 71 and operation handle 6, in cunning After the position adjustment of block 32 is good, the end for making threaded rod 73 insert screwed hole 72 by turning threaded rod 73 is pressed on gear 5 Sideways, and then gear 5 is fixed on sliding block 32, reduce the situation that gear 5 is rolled on rack 4, and then reduce sliding block 32 on location-plate 31 before and after sliding situation;When needing to adjust the position of sliding block 32, make threaded rod by turning threaded rod 73 73 end and the side of gear 5 are separated from each other, and rotating operation handle 6 can just be such that sliding block 32 is slid on location-plate 31.
As shown in figure 4, the rectangular body shape of the lower surface of sliding block 32, the both sides of the lower end of sliding block 32, which are integrally formed, to be parallel to determine The barrier block 9 of position plate 31, the upper surface of location-plate 31 is provided with the chute 8 slid for sliding block 32, and the madial wall of chute 8 is provided with barrier In the barrier groove 10 of barrier block 9, barrier groove 10 is in corresponding with barrier block 9 rectangular-shaped, and then the freedom of the vertical direction of sliding block 32 Degree is limited by chute 8 and barrier groove 10, so that sliding block 32 is only capable of the horizontal direction sliding in location-plate 31, and then operating personnel When adjusting the position of sliding block 32, tightening mechanism is difficult left and right and teetertottered, and adds the stability of the tightening mechanism;Wherein slide The side wall of block 32 just to being provided with arc rib 11 at chute 8, when sliding block 32 slides in chute 8, makes the arc on sliding block 32 The madial wall of rib 11 and chute 8 offsets, and then reduces the contact area between sliding block 32 and chute 8, makes sliding block 32 in chute 8 The frictional force of interior sliding reduces.
Total course of work:Adjustable supporting roll 342 is located at the position on through hole 14, makes the branch of two upper ends of support column 341 The plane that support roller 342 is formed is parallel with the operating platform 18 of sewing machine 2, and annular elastic band to be stapled and cloth are enclosed on In four support rollers 342, the annular elastic band for making to be placed in support roller 342 by rotating operation handle 6 reaches tensioned state, The end of threaded rod 73 is pressed on the side of gear 5 by turning threaded rod 73, and then gear 5 is fixed on sliding block 32, Reducing the situation that gear 5 is rolled on rack 4, and then sliding block 32 is fixed on location-plate 31 to be moved, this Sample will be more easy during suture.

Claims (8)

1. a kind of sewing machine for being used to sew Telescopic trouser-waist, including panel (1) and the sewing machine on panel (1) (2) and extending apparatus (3), the extending apparatus (3) includes location-plate (31) and the tensioner Telescopic trouser being fixed on panel (1) The tightening mechanism of waist, it is characterized in that:The tightening mechanism includes sliding block (32), fixed block (33) and is individually fixed in sliding block (32), the stretching component (34) on fixed block (33), the fixed block (33) is fixedly connected on location-plate (31), the sliding block (32) horizontal sliding is connected on location-plate (31), and the upper surface of the location-plate (31) is provided with along location-plate (31) length direction Rack (4), the lower surface of the sliding block (32) is rotatably connected to the gear (5) being engaged with rack (4), the gear (5) Side located at deviate gear (5) axle center operation handle (6), the sliding block (32) provided with prevent gear (5) rotate consolidate Determine component (7).
2. the sewing machine according to claim 1 for being used to sew Telescopic trouser-waist, it is characterized in that:The location-plate (31) Upper surface is provided with the chute (8) for sliding block (32) sliding, and the end of sliding block (32) the insertion chute (8) is provided with barrier block (9), The madial wall of the chute (8) is provided with the barrier groove (10) for barrier block (9) sliding.
3. the sewing machine according to claim 2 for being used to sew Telescopic trouser-waist, it is characterized in that:The side of the sliding block (32) Wall is provided with the arc rib (11) along chute (8) direction.
4. the sewing machine according to claim 1 for being used to sew Telescopic trouser-waist, it is characterized in that:The operation handle (6) End be socketed with soft rubber set (12).
5. the sewing machine according to claim 1 for being used to sew Telescopic trouser-waist, it is characterized in that:The fixation kit (7) Including contiguous block (71), the screwed hole (72) and and screwed hole that are arranged on contiguous block (71) for being fixed on sliding block (32) side (72) threaded rod (73) that screw thread coordinates, and end and the gear (5) of threaded rod (73) can be made by twisting threaded rod (73) Side offset, there is gap between the contiguous block (71) and operation handle (6).
6. the sewing machine according to claim 5 for being used to sew Telescopic trouser-waist, it is characterized in that:The side of the sliding block (32) Wall is provided with the mounting groove (13) installed for contiguous block (71).
7. the sewing machine according to claim 1 for being used to sew Telescopic trouser-waist, it is characterized in that:The stretching component (34) Including support column (341) and two support rollers (342) being fixed on support column (341), the support roller (342) with it is described It is perpendicular between support column (341).
8. the sewing machine according to claim 7 for being used to sew Telescopic trouser-waist, it is characterized in that:The support column (341) The through hole (14) passed through for support roller (342) is provided with, the support roller (342) is provided with screw rod through one end of through hole (14) (15), the screw rod (15) is socketed with the nut (16) coordinated with screw rod (15) screw thread positioned at the both sides of support column (341).
CN201621264098.2U 2016-11-18 2016-11-18 Sewing machine for sewing Telescopic trouser-waist Active CN206376095U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621264098.2U CN206376095U (en) 2016-11-18 2016-11-18 Sewing machine for sewing Telescopic trouser-waist

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621264098.2U CN206376095U (en) 2016-11-18 2016-11-18 Sewing machine for sewing Telescopic trouser-waist

Publications (1)

Publication Number Publication Date
CN206376095U true CN206376095U (en) 2017-08-04

Family

ID=59402328

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621264098.2U Active CN206376095U (en) 2016-11-18 2016-11-18 Sewing machine for sewing Telescopic trouser-waist

Country Status (1)

Country Link
CN (1) CN206376095U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108396469A (en) * 2018-05-15 2018-08-14 温州市利家缝纫科技有限公司 One kind can elastic trousers waist sewing device
CN109989189A (en) * 2019-04-25 2019-07-09 九牧王股份有限公司 A kind of elastic fabric bottom of s trouser leg receives side auxiliary device and application method
CN110273233A (en) * 2019-07-24 2019-09-24 苏州慧衣美机械科技有限公司 A kind of novel drawing waist machine
CN111979650A (en) * 2020-08-28 2020-11-24 袁小盼 Lace sewing device convenient to turn over
CN113668150A (en) * 2021-07-20 2021-11-19 广州市格风服饰有限公司 Supplementary tensioning material feeding unit and sewing machine of clothing sewing
CN113699701A (en) * 2021-09-09 2021-11-26 永泰县瑞峰制衣有限公司 Overspeed device tensioner and quilting equipment for quilting

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108396469A (en) * 2018-05-15 2018-08-14 温州市利家缝纫科技有限公司 One kind can elastic trousers waist sewing device
CN108396469B (en) * 2018-05-15 2023-12-12 温州市利家缝纫科技有限公司 Waist sewing device capable of loosening and tightening
CN109989189A (en) * 2019-04-25 2019-07-09 九牧王股份有限公司 A kind of elastic fabric bottom of s trouser leg receives side auxiliary device and application method
CN110273233A (en) * 2019-07-24 2019-09-24 苏州慧衣美机械科技有限公司 A kind of novel drawing waist machine
CN110273233B (en) * 2019-07-24 2024-04-16 苏州慧衣美机械科技有限公司 Novel draw waist machine
CN111979650A (en) * 2020-08-28 2020-11-24 袁小盼 Lace sewing device convenient to turn over
CN111979650B (en) * 2020-08-28 2021-08-27 潢川荣丰纺织实业有限公司 Lace sewing device convenient to turn over
CN113668150A (en) * 2021-07-20 2021-11-19 广州市格风服饰有限公司 Supplementary tensioning material feeding unit and sewing machine of clothing sewing
CN113668150B (en) * 2021-07-20 2022-12-20 广州市格风服饰有限公司 Supplementary tensioning material feeding unit and sewing machine of clothing sewing
CN113699701A (en) * 2021-09-09 2021-11-26 永泰县瑞峰制衣有限公司 Overspeed device tensioner and quilting equipment for quilting

Similar Documents

Publication Publication Date Title
CN206376095U (en) Sewing machine for sewing Telescopic trouser-waist
CN206183882U (en) Martial arts training leg pressing device
CN107466801A (en) A kind of suspension type rubber cutting apparatus and mechanization rubber tapping method
CN209662608U (en) A kind of height-adjustable knockdown recreation ground slide
CN203807716U (en) Cotton quilt sewing device
CN108787864A (en) A kind of fire box production plate punching device
CN207145391U (en) A kind of height adjustment mechanism
CN206784001U (en) A kind of carpet carding machine
CN205685621U (en) A kind of glove hemmer
CN208511800U (en) The intelligent ladder case of rehabilitation training
CN216169615U (en) Stable form horizontal bar for sports training
CN215077239U (en) Body-building mirror
CN213760442U (en) Multipurpose national dance roll-over skill training ware
CN206582487U (en) A kind of computer clamping device of angle adjustable
CN207520521U (en) A kind of bicycle training device
CN206708685U (en) A kind of adjustable computer screen screen bracket
CN207447562U (en) A kind of multi-functional high-carbon Iron Stand
CN214736573U (en) Elastic cord regulator and sewing machine
CN109173188A (en) A kind of strong abdomen device convenient for adjusting activity point of view
CN215441124U (en) Ironing table
CN210941139U (en) Adjustable trimming machine for processing artware
CN213789876U (en) Intelligent table tennis table with motion analysis function
CN206655010U (en) One kind has Height Adjustable sewing machine frame
CN220284413U (en) Silk quilt props cotton device
CN214855780U (en) Non-woven fabric goods shelf convenient for taking materials

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant