CN2111931U - Plastic rings knotting machine - Google Patents
Plastic rings knotting machine Download PDFInfo
- Publication number
- CN2111931U CN2111931U CN 91224204 CN91224204U CN2111931U CN 2111931 U CN2111931 U CN 2111931U CN 91224204 CN91224204 CN 91224204 CN 91224204 U CN91224204 U CN 91224204U CN 2111931 U CN2111931 U CN 2111931U
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- CN
- China
- Prior art keywords
- bearded needle
- arm
- frame
- stage casing
- plastic tape
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Abstract
The utility model relates to a knot tying machine of plastic tape rings which can be used for general plastic neck of a bag to tie knots. The utility model provides with a paying out device which can pay out the whole volume of the plastic tape; the plastic tape can be held and positioned by a clamping device, and can be cut off by a shearing mechanism in the fixed length; when the plastic tape is in the processes of cutting off, the intermediate section of the plastic tape is pulled down by a bearded needle into a press resisting and limiting device and a striking gear to be resisted press and be struck; twisted and pulled by a propulsion device of the bearded needle, the plastic tape can be tied knots, forming a series of knot rings. The utility model can tie knots in a full automatic way, having the economical and practical benefit.
Description
The utility model relates to a kind of plastics band knot tying machine.
Provide the plastics sack to seal in the past in order to bind, simultaneously with the plastics band that lifts function, mainly be by around whole spherical plastic tape, tie a knot one by one and cut off take off formed, and the manufacturing of this plastic tape, be to rely on manpower fully, this can be made conveniently at one's leisure and be got by general pedlar; Therefore, it is not only wasted time and energy on making, and yields poorly, and can't reach big or small uniform quality again, often is not inconsistent demand.
The purpose of this utility model is to overcome the above-mentioned defective of prior art and a kind of plastics band knot tying machine is provided.
Another purpose of the present utility model provide a kind of can the full-automatic plastics band knot tying machine of producing, be beneficial to the plastics band and only need rely on a few peoples' operation and can finish manufacturing process by full automaticity, thereby reach the Practical Benefit of saving manpower.
Another purpose of the present utility model provides a kind of plastics band knot tying machine of can stock production making plastic hoop, when making its output can bring up to manpower effectively to make more than several thousand, ten thousand times, thereby obtain high economic benefit.
Realize a kind of plastics band knot tying machine of the present utility model, mainly comprise:
One frame;
One actinobacillus device contains terminal a pivot joint and is positioned the frame back segment, and leading portion extends the trigger bar that is shaft-like forward, and this trigger bar stage casing is driven trigger bar in the elastic element reversing sense in conjunction with a stay cord and makes unilateral shift according to the rear end in conjunction with an elastic element; Be interval with a plurality of lead rings on the trigger bar stage casing, latter end forms the guide hole of hollow, passes the guiding unwrapping wire for plastic tape;
One holding device, containing a permanent seat is consolidated on the frame, about trigger bar left lateral end section, pivot has a pressure arm on the permanent seat, this pressure arm is with connecting rod and a pivot joint of cranking arm, make the other end of cranking arm driven by a pull bar, and get so that pressure arm leading portion and permanent seat form a jaw, so that the plastic tape latter end that trigger bar was discharged is gripped;
One shear, contain a permanent seat and be consolidated in the frame left side, front-end position about the trigger bar return, be consolidated with the sword plate that two shapes articulate like the scissors stage casing on it, one of sword plate is movable, the one end articulates a connecting rod and a lever articulates, and this lever must be that fulcrum is done lever motion according to the stage casing, and makes the sword plate make shearing motion just as scissors;
Bearded needle propelling unit once, be positioned at holding device and shear midway location below, containing, bearded needle is articulated in fulcrum pumping arm action front end endways, this pumping arm action middle-end is compressed by a cam, in addition the pumping arm action side is provided with the bar of pulling back, and this bar of pulling back is subjected to the frame correcting, and is subjected to a tension spring to support the cooperation cam, and bearded needle is guided by a guide bracket down, is able to correctly be shifted up and down;
One striking gear, be positioned at bearded needle propelling unit top down, contain one group of arm, this group arm end is articulated on the frame, the other end is provided with the allocating slot of a depression, the stage casing then articulates a connecting rod, and this connecting rod other end fixed one is able to the axostylus axostyle of left and right sidesing shifting, reverses and be able to drive the driving lever front and back by the axostylus axostyle left and right sidesing shifting;
One compresses inhibiting device, be positioned at the striking gear top, containing a pivot ties be the revolving bed that keeps flat on frame, but this revolving bed back segment is incorporated on the axostylus axostyle of a left and right sidesing shifting, and draw with an extension spring in latter end is inboard slightly, leading portion has provided a microscler guide hole, establish a pressure ring correspondence at interval in the guide hole top, be pivoted a forward press between pressure ring and revolving bed in the side, stage casing in addition, the forward press stage casing is drawn by a lead that is arranged with elastic element (spring), again in the revolving bed right side in conjunction with a guide rod that extends forward downwards;
One upper hook meedle propelling unit, be located at an advance seat on two axostylus axostyles of frame, displacement running before and after being done, it is relative with aforementioned guide hole that advance seat is pivoted with the rotating shaft of a latter end tool gear, the be pivoted gear mesh of a gear shaft and aforementioned rotating shaft of side, this gear shaft also is connected with an indexing separator; Be arranged with the sliding sleeve that a front end is taper, back segment tool annular groove in the rotating shaft leading portion in addition, and in sliding sleeve the place ahead of rotating shaft, in conjunction with being positioned with a connecting support, this connecting support side is pivoted with one and colludes body, compressed by sliding sleeve and make and collude the body latter end and compress the connecting support surface, section surface is provided with a locating dowel pin before the rotating shaft; Overlap a bearded needle in rotating shaft to bolt in addition, bearded needle back segment tool annular guide channel cooperates a Y-shaped preceding driving lever to insert again and ties in the guide groove of bearded needle, is promoted to be shifted before and after the bearded needle; One pushing ram latter end has groove and is cross-placed in the sliding sleeve groove, and the stage casing is promoted by an axostylus axostyle, and is driven displacement before and after the sliding sleeve, opens and closes with the body that colludes of control connecting support;
One ejecting device is positioned at bearded needle propelling unit rear down, contains a pivot to tie cranking arm on a cross bar, and this epimere line of cranking arm is in following bearded needle rear, and hypomere and connecting rod pivot knot then drive the swing of cranking arm by connecting rod, cooperate a blowing nozzle to blow again;
The knot tying machine of forming according to preceding described device, be can finish plastic tape release, clamping, fixed-length cut-off by each device, collude under the Zhe, pushing compresses, reverse, collude and motion such as draw, and can finish the automatic knotting of plastics band.
Because the plastics band manufacturing process that the utility model provides has entered full-automation, therefore, can reach following progressive benefit on practice:
1. single personnel can operate many group facility simultaneously, and relative can save manpower in a large number.
2. full-automatic the manufacturing, speed is fast, and output is big.
3. unmanned is factor affecting, stay in grade.
Followingly the utility model is elaborated with reference to accompanying drawing, wherein:
Fig. 1 is a part exploded drawings of the present utility model.
Fig. 2 is a unwrapping wire scheme drawing of the present utility model.
Fig. 3 is the scheme drawing that grips of the present utility model.
Fig. 4 pushes away the protrusion scheme drawing on the bearded needle under the bearded needle propelling unit down of the present utility model.
Fig. 5 be of the present utility model cut off with following bearded needle under collude scheme drawing.
Fig. 6 is body fastening, the forward press pusher scheme drawing of colluding of the present utility model.
Fig. 7 pushes away scheme drawing before the of the present utility model group of arm.
Fig. 8 of the present utility modelly moves scheme drawing after compressing inhibiting device left side pendulum, upper hook meedle propelling unit.
Fig. 9 is a plastics band finished figure of the present utility model.
As shown in Figure 1: a kind of plastics band knot tying machine, mainly comprise a frame 2, an actinobacillus device 3, a holding device 4, a shear 5, once bearded needle propelling unit 6, a striking gear 7, compress inhibiting device 8, a upper hook meedle propelling unit 9 and an ejecting device 10, cooperate the motor driven cam shaft again, to drive each device motion; Wherein,
Frame 2 provides aftermentioned element fixed base, is combined with motor and a plurality of cam set on this frame 2, makes these a plurality of cam set drive all aftermentioned element motions;
Actinobacillus device 3, contain terminal location frame 2 back segments that articulate, leading portion extends the trigger bar 31 that is shaft-like forward, these trigger bar 31 stage casings are in conjunction with an elastic element (extension spring) 32, driven trigger bar 31 in elastic element 32 reversing senses in conjunction with a stay cord 33 and made unilateral shift according to the rear end, mat elastic element 32 location of pulling back again is to reach left and right sides backswing campaign; Be interval with a plurality of lead rings 34 on trigger bar 31 stage casings, latter end forms the guide hole 35 of hollow, passes the guiding unwrapping wire for plastic tape 11;
Holding device 4 contains a permanent seat 41 and is consolidated on the frame 2, and about trigger bar 31 left lateral end sections, pivot has a pressure arm 42 on the permanent seat 41; This pressure wall 42 is cranked arm with connecting rod 43 and and 44 is articulated, and makes curved wall 44 other ends driven by a pull bar 45, and so that pressure arm 42 leading portions and permanent seat 41 formation one jaw grip with plastic tape 11 latter ends that trigger bar 31 is discharged;
Shear 5, contain a permanent seat 51 and be consolidated in the frame left side, front-end position about trigger bar 31 returns, be consolidated with the sword plate 52,53 that two shapes articulate like the scissors stage casing on it, one of sword plate is movable, and the one end articulates a connecting rod 54 and a lever 55 articulates, and this lever 55 must be that fulcrum is done lever motion according to the stage casing, and make sword plate 52,53 just as scissors, plastic tape is made fixed-length cut-off;
Following bearded needle propelling unit 6, be positioned at holding device 4 and shear 5 midways location below, containing, bearded needle 61 is articulated in fulcrum pumping arm action 62 front ends endways, these pumping arm action 62 middle-ends are compressed by a cam 63, and in addition pumping arm action 62 sides are provided with the bar 64 of pulling back, and this bar 64 of pulling back is subjected to the frame correcting, and be subjected to a tension spring 65 to support cooperation cam 63, pumping arm action 62 is risen and bearded needle 61 liftings down and driven, and bearded needle 61 is subjected to a guide bracket 66 guidings down, is able to correctly be shifted up and down;
Striking gear 7, be positioned at bearded needle propelling unit 6 tops down, contain one group of arm 71, this group arm 71 ends are articulated on the frame, the other end is provided with the allocating slot 72 of a depression, the stage casing then articulates a connecting rod 73, and these connecting rod 73 other ends fixed one are able to the axostylus axostyle 74 of left and right sidesing shifting, reverses and be able to drive driving lever 71 front and back by axostylus axostyle 74 left and right sidesing shiftings;
Compress inhibiting device 8, be positioned at striking gear 7 tops, containing a pivot ties be the revolving bed 81 that keeps flat on frame, but these revolving bed 81 back segments are incorporated on the axostylus axostyle 82 of a left and right sidesing shifting, and it is inboard slightly with an extension spring 83 drawings in latter end, leading portion has provided a microscler guide hole 84, establish a pressure ring 85 correspondences at interval in the guide hole top, be pivoted a forward press 86 between pressure ring 85 and revolving bed 81 in the side, stage casing in addition, forward press 86 stage casings are drawn by a lead 88 that is arranged with elastic element (spring) 87, again in revolving bed 81 right sides in conjunction with a guide rod 89 that extends forward downwards; Order bearded needle 61 down is upward through guide hole 84 and pressure ring 85, cooperates the effect of axostylus axostyle 82, extension spring 83, lead 88 and spring 87 again, and gets so that revolving bed 81 swings and forward press 86 swings;
Upper hook meedle propelling unit 9, be located at an advance seat 91 on two axostylus axostyles of frame 2, shift movement before and after being done, the rotating shaft 92 that advance seat 91 is pivoted with a latter end tool gear is relative with aforementioned guide hole 84, the side is pivoted with the gear mesh of a gear shaft 93 and aforementioned rotating shaft 92, and this gear shaft 93 is connected with an indexing separator 94; Be arranged with the sliding sleeve 95 that a front end is taper, back segment tool annular groove in rotating shaft 92 leading portions in addition, and in sliding sleeve 95 the place aheads of rotating shaft 92, in conjunction with being positioned with a connecting support 96, these connecting support 96 sides are pivoted with one and collude body 961, compressed by sliding sleeve 95 and make and collude body 961 latter ends and compress connecting support 96 surfaces, section surfaces are provided with a locating dowel pin 97 before the rotating shaft 92; Overlap a bearded needle 98 in rotating shaft 92 to bolt in addition, bearded needle 98 back segment tool annular guide channels 981 cooperate a Y-shaped preceding driving lever 99 to insert again and tie in the guide groove 981 of bearded needle 98, are promoted the displacement of bearded needle 98 front and back; One pushing ram, 90 latter ends have groove 901 and are cross-placed in sliding sleeve 95 grooves, and the stage casing is promoted by an axostylus axostyle 902, and is driven the displacement of sliding sleeve 95 front and back, close with 961 of the bodies that collude of control connecting support 96;
Ejecting device 10, be positioned at bearded needle propelling unit 6 rears down, containing a pivot ties crank arm 101 on a cross bar, these 101 epimere lines of cranking arm are in following bearded needle 61 rears, hypomere and connecting rod pivot knot then drives 101 swings of cranking arm by connecting rod, so that can be after bearded needle 61 down is drop-down with plastic tape 11, being cranked arm 101 pushes away forward, cooperates a blowing nozzle 102 to blow again.
Comply with the plastics band knot tying machine that aforementioned all devices are formed, be can be by the trigger bar 31 of actinobacillus device 3, plastic tape 11 is taken in the jaw that is displaced to holding device 4, be subjected to pressure arm 42 compacting location (shown in Fig. 2 and 3), mat trigger bar 31 is shifted plastic band 11 to shear 5 directions again, same bearded needle 61 plastic tape 11 tops (referring to shown in Figure 4) that are positioned at protruding upward at present, and when trigger bar 31 is displaced to shear 5 sides, sword plate 52,53 cut off plastic tape, and holding device 4 unclasps, and bearded needle 61 colludes doubling (referring to shown in Figure 5) under the order under plastic tape 11 central authorities; Then compress the plastic tape epimere before compressing the forward press 86 of inhibiting device 8, push away before the upper hook meedle propelling unit 9,961 pairs of plastic tapes of body, 11 epimere clamps spacing (referring to shown in Figure 6) are colluded in order, stir the reach of plastic tape hypomere with the arm 71 of dialling of striking gear 7 again, bearded needle 98 leans out and catches on the plastic tape stage casing simultaneously, and body 961 and plastic tape rotation (referring to shown in Figure 7) are colluded in rotating shaft 92 drives, compress inhibiting device 8 and execute pendulum left this moment, upper hook meedle propelling unit 9 retreats simultaneously, bearded needle 98 containing incomes (referring to shown in Figure 8), can finish the knotting manufacturing (referring to shown in Figure 9) of a plastics band 12, the circulation that so goes round and begins again operates, and can reach the continuous manufacturing of plastics band.
Moreover, according to preceding described mechanism, again on same frame, can single group of combination, also can do the combinations arranged side by side of many groups, so that can produce a plurality of plastics bands simultaneously.
Claims (1)
1, a kind of plastics band knot tying machine is characterized in that this knot tying machine mainly comprises:
One frame;
One actinobacillus device contains terminal a pivot joint and is positioned the frame back segment, and leading portion extends the trigger bar that is shaft-like forward, and this trigger bar stage casing is driven trigger bar in the elastic element reversing sense in conjunction with a stay cord and makes unilateral shift according to the rear end in conjunction with an elastic element; Be interval with a plurality of lead rings on the trigger bar stage casing, latter end forms the guide hole of hollow, passes the guiding unwrapping wire for plastic tape;
One holding device, containing a permanent seat is consolidated on the frame, about trigger bar left lateral end section, pivot has a pressure arm on the permanent seat, this pressure arm is with connecting rod and a pivot joint of cranking arm, make the other end of cranking arm driven by a pull bar, and get so that pressure arm leading portion and permanent seat form a jaw, so that the plastic tape latter end that trigger bar was discharged is gripped;
One shear, contain a permanent seat and be consolidated in the frame left side, front-end position about the trigger bar return, be consolidated with the sword plate that two shapes articulate like the scissors stage casing on it, one of sword plate is movable, the one end articulates a connecting rod and a lever articulates, and this lever must be that fulcrum is done lever motion according to the stage casing, and makes the sword plate make shearing motion just as scissors;
Bearded needle propelling unit once, be positioned at holding device and shear midway location below, containing, bearded needle is articulated in fulcrum pumping arm action front end endways, this pumping arm action middle-end is compressed by a cam, in addition the pumping arm action side is provided with the bar of pulling back, and this bar of pulling back is subjected to the frame correcting, and is subjected to a tension spring to support the cooperation cam, and bearded needle is guided by a guide bracket down, is able to correctly be shifted up and down;
One striking gear, be positioned at bearded needle propelling unit top down, contain one group of arm, this group arm end is articulated on the frame, the other end is provided with the allocating slot of a depression, the stage casing then articulates a connecting rod, and this connecting rod other end fixed one is able to the axostylus axostyle of left and right sidesing shifting, reverses and be able to drive the driving lever front and back by the axostylus axostyle left and right sidesing shifting;
One compresses inhibiting device, be positioned at the striking gear top, containing a pivot ties be the revolving bed that keeps flat on frame, but this revolving bed back segment is incorporated on the axostylus axostyle of a left and right sidesing shifting, and draw with an extension spring in latter end is inboard slightly, leading portion has provided a microscler guide hole, establish a pressure ring correspondence at interval in the guide hole top, be pivoted a forward press between pressure ring and revolving bed in the side, stage casing in addition, the forward press stage casing is drawn by a lead that is arranged with elastic element (spring), again in the revolving bed right side in conjunction with a guide rod that extends forward downwards;
One upper hook meedle propelling unit, be located at an advance seat on two axostylus axostyles of frame, displacement running before and after being done, it is relative with aforementioned guide hole that advance seat is pivoted with the rotating shaft of a latter end tool gear, the be pivoted gear mesh of a gear shaft and aforementioned rotating shaft of side, this gear shaft also is connected with an indexing separator; Be arranged with the sliding sleeve that a front end is taper, back segment tool annular groove in the rotating shaft leading portion in addition, and in sliding sleeve the place ahead of rotating shaft, in conjunction with being positioned with a connecting support, this connecting support side is pivoted with one and colludes body, compressed by sliding sleeve and make and collude the body latter end and compress the connecting support surface, section surface is provided with a locating dowel pin before the rotating shaft; Overlap a bearded needle in rotating shaft to bolt in addition, bearded needle back segment tool annular guide channel cooperates a Y-shaped preceding driving lever to insert again and ties in the guide groove of bearded needle, is promoted to be shifted before and after the bearded needle; One pushing ram latter end has groove and is cross-placed in the sliding sleeve groove, and the stage casing is promoted by an axostylus axostyle, and is driven displacement before and after the sliding sleeve, opens and closes with the body that colludes of control connecting support;
One ejecting device is positioned at bearded needle propelling unit rear down, contains a pivot to tie cranking arm on a cross bar, and this epimere line of cranking arm is in following bearded needle rear, and hypomere and connecting rod pivot knot then drive the swing of cranking arm by connecting rod, cooperate a blowing nozzle to blow again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91224204 CN2111931U (en) | 1991-09-24 | 1991-09-24 | Plastic rings knotting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91224204 CN2111931U (en) | 1991-09-24 | 1991-09-24 | Plastic rings knotting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2111931U true CN2111931U (en) | 1992-08-05 |
Family
ID=4930721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91224204 Granted CN2111931U (en) | 1991-09-24 | 1991-09-24 | Plastic rings knotting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2111931U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327799C (en) * | 2003-03-02 | 2007-07-25 | 李哲 | Automatic machine for knotting sea-tangle |
| CN102120505A (en) * | 2011-01-26 | 2011-07-13 | 北京大松博川包装机械有限公司 | Automatic bag binding device |
| CN104354896A (en) * | 2010-10-05 | 2015-02-18 | 理想工业公司 | Knot tying device and method for tying knots around objects |
| CN104401041A (en) * | 2014-11-21 | 2015-03-11 | 浙江工业大学 | Automatic paper-bag knot-tying machine |
| CN105857688A (en) * | 2016-04-26 | 2016-08-17 | 长春理工大学 | Automatic double-loop-knot knotting machine |
| CN108341083A (en) * | 2018-01-26 | 2018-07-31 | 巨石集团有限公司 | A kind of yarn knotting method of air eliminant |
| CN109592141A (en) * | 2018-11-19 | 2019-04-09 | 青岛科技大学 | A kind of automatic setting fastening device of assembly line bottleneck |
| CN109850285A (en) * | 2018-12-10 | 2019-06-07 | 青岛科技大学 | A kind of uninterrupted frenulum coating device of multifibres band |
| CN112124724A (en) * | 2020-09-02 | 2020-12-25 | 泸州江旭机械制造有限责任公司 | Full-automatic ribbon fastening machine |
| CN114435656A (en) * | 2022-02-21 | 2022-05-06 | 重庆大学 | Towel bundling device |
-
1991
- 1991-09-24 CN CN 91224204 patent/CN2111931U/en active Granted
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327799C (en) * | 2003-03-02 | 2007-07-25 | 李哲 | Automatic machine for knotting sea-tangle |
| CN104354896A (en) * | 2010-10-05 | 2015-02-18 | 理想工业公司 | Knot tying device and method for tying knots around objects |
| CN104354896B (en) * | 2010-10-05 | 2017-04-12 | 理想工业公司 | Knot tying device and method for tying knots around objects |
| CN102120505A (en) * | 2011-01-26 | 2011-07-13 | 北京大松博川包装机械有限公司 | Automatic bag binding device |
| CN102120505B (en) * | 2011-01-26 | 2012-06-27 | 唐山大松包装机械制造有限公司 | Automatic bag binding device |
| CN104401041A (en) * | 2014-11-21 | 2015-03-11 | 浙江工业大学 | Automatic paper-bag knot-tying machine |
| CN104401041B (en) * | 2014-11-21 | 2016-09-14 | 浙江工业大学 | Automatically paper bag knot tying machine |
| CN105857688A (en) * | 2016-04-26 | 2016-08-17 | 长春理工大学 | Automatic double-loop-knot knotting machine |
| CN108341083A (en) * | 2018-01-26 | 2018-07-31 | 巨石集团有限公司 | A kind of yarn knotting method of air eliminant |
| CN109592141A (en) * | 2018-11-19 | 2019-04-09 | 青岛科技大学 | A kind of automatic setting fastening device of assembly line bottleneck |
| CN109592141B (en) * | 2018-11-19 | 2021-04-09 | 青岛科技大学 | Automatic tying device for bottleneck of assembly line |
| CN109850285A (en) * | 2018-12-10 | 2019-06-07 | 青岛科技大学 | A kind of uninterrupted frenulum coating device of multifibres band |
| CN109850285B (en) * | 2018-12-10 | 2021-05-14 | 青岛科技大学 | Multi-silk-belt uninterrupted lacing film coating device |
| CN112124724A (en) * | 2020-09-02 | 2020-12-25 | 泸州江旭机械制造有限责任公司 | Full-automatic ribbon fastening machine |
| CN112124724B (en) * | 2020-09-02 | 2022-07-05 | 泸州江旭机械制造有限责任公司 | Full-automatic ribbon fastening machine |
| CN114435656A (en) * | 2022-02-21 | 2022-05-06 | 重庆大学 | Towel bundling device |
| CN114435656B (en) * | 2022-02-21 | 2022-11-11 | 重庆大学 | Towel bundling device |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |