CN203601589U - Full-automatic double-layer-bag packaging machine - Google Patents
Full-automatic double-layer-bag packaging machine Download PDFInfo
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- CN203601589U CN203601589U CN201320738167.9U CN201320738167U CN203601589U CN 203601589 U CN203601589 U CN 203601589U CN 201320738167 U CN201320738167 U CN 201320738167U CN 203601589 U CN203601589 U CN 203601589U
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Abstract
The utility model relates to a full-automatic double-layer-bag packaging machine. The full-automatic double-layer-bag packaging machine comprises a rack. A track is arranged on the rack and serves a front trolley, a middle trolley and a rear trolley. A bag feeding position, an inner-bag arrangement positron, a centering position, a filling position, a twisting tying position and a sewing position are sequentially arranged on the rack from front to back. By means of the full-automatic double-layer-bag packaging machine, original manual operation is replaced by automatic bag feeding, inner bag arrangement, bag centering, filling and solidifying, twisting tying and the like, the work intensity of workers is low, the production speed is high, and production quality is good.
Description
Technical field
The utility model relates to a kind of device of full automatic packaging, especially a kind of double-ply bag device of full automatic packaging.
Background technology
For the packing that the wrapping machine of the chemical of packing 25kg generally can only adapt to single-layer paper bag automatically, can not realize automatic packaging for the double-ply bag with plastic sheeting inner lining bag in the market, can only complete by original manual work.This handwork not only speed is slow, and labour intensity is high, and quality can not be guaranteed.
Summary of the invention
A kind of full-automatic wrapping machine of applicable double-ply bag is provided in order to address the above problem the utility model, can have realized automatic bag feeding, inner bag arrangement, sack centering, a kind of device of full automatic packaging stocky, that reverse the entire exercise such as tying of feeding.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
The utility model is a kind of automatic double-layer bag package machine, comprise frame, in frame, be provided with track, track is for front dolly, middle dolly and rear dolly, on being provided with in frame, bag station, inner bag arrange station, centering station, filling station, torsion tying station, sewing workstation, before upper bag station is positioned at inner bag arrangement station, before inner bag arrangement station is positioned at centering station, before centering station is positioned at filling station, before filling station is positioned at and reverses tying station, before torsion tying station is positioned at sealing station.
Further improvement of the utility model is: upper bag station comprises puts bag platform and bagging device, and one end of bagging device is provided with and drives the splitting of bagging device to drive cylinder, is the vacuum cup that separates sack at the other end of bagging device.
Further improvement of the utility model is: inner bag arranges station and comprises inner bag collating unit and feedway, inner bag collating unit comprises the brush roll arranging to internal bag, feedway is band conveyor, double-ply bag is delivered to inner bag collating unit by bagging device in upper bag station, sack after smoothing by the brush roll on inner bag collating unit is delivered to the aligning gear of centering station by band conveyor, aligning gear is by interior outer bag centering, bag taking device is set on front dolly sack is delivered to filling station, on bag taking device, be provided with in crawl, the gas pawl of outer bag, by air cylinder driven.
Further improvement of the utility model is: filling station comprises telescopic pipe, be provided with blowing gate on the top of telescopic pipe, be provided with buffering bucket in blowing gate upper end, above buffering bucket, be provided with automatic balance, the top of automatic balance is scale upper lock gate, automatic balance and scale upper lock gate weigh up the raw material of predetermined weight and pack in buffering bucket, the charging that sackholder is lived inside and outside the surrounding of telescopic pipe is provided with double-deck sack open bag and by double-deck sack inside and outside a bag charging of holding grab bag, charging is opened bag and charging and is grabbed and bag sack is opened, telescopic pipe stretches in double-deck sack and opens, open blowing gate, raw material is fallen into double-deck sack and is realized automatic canning, after canned completing, clamp to deliver to by the bag clamping device on middle dolly and reverse tying station.
Further improvement of the utility model is: reverse the opening tying device that tying station comprises torsion device and is positioned at below, torsion device right side, one reverses to open bag and reverse the centre of grabbing bag and is separately positioned on fore-and-aft direction and the left and right directions of torsion device, first reverse to internal bag by torsion device, carry out tying by opening tying device again, completing tying retrotorsion opens bag and torsion and grabs and bag outer bag is opened, and by torsion device, inner bag is filled in to outer bag, conveyer served by sack by bag brood sac device of holding up by the connecting rod mechanism by air cylinder driven on rear dolly after completing, conveyer is sent sack into sealing station.
Further improvement of the utility model is: sealing station comprises the opening shaping that the sack of sack is carried out to shaping, is provided with the sewing machine that outer bag is sewed up at the right-hand member of opening shaping, and the sack that completes sewing is exported by conveyer.
Further improvement of the utility model is: on middle dolly, be provided with the raw material in double-deck sack is carried out to stocky stocky mechanism, stocky mechanism adds connecting rod mechanism by cylinder or cylinder and drives.
Further improvement of the utility model is: on the bag clamping device being positioned on medium and small car, be provided with the blowning installation that sack is carried out the exhaust gear of exhaust and sack is arranged, exhaust gear adds flexible gas-filled installation composition by exhaustion plate or by the exhaustion plate of compressed air-driven, and the organ pipe that blows that blowning installation is driven by pressurized air or blower fan forms.
Further improvement of the utility model is: above buffering bucket, be provided with cleaning plant, cleaning plant is the compressed-air actuated nozzle of clearing up buffering bucket of ejection.
A kind of wrapping machine of automatic double-layer bag comprises the steps:
(1) upper bag: be placed on bag platform by manually folding one or folding double-ply bag more;
(2) arrangement, centering: bagging device is taken single bilayered bag send into away on inner bag collating unit, arranges (3) sack is smoothed by inner bag, by feedway 4, sack is delivered to aligning gear 5 after smoothing, and aligning gear 5 is by interior outer bag centering;
(3) filling, stocky: filling station delivered to by sack by the bag taking device on front dolly, charging is opened bag inside and outside double-ply bag sackholder is lived, charging is grabbed bag inside and outside double-ply bag bag is held, front dolly returns and the bag of feeding out, charging are grabbed bag sack punching is prepared filling afterwards, now automatic balance, scale upper lock gate weigh up the raw material of predetermined weight and pack in buffering bucket, telescopic pipe puts in double-ply bag and opens, blowing gate is opened blowing and is realized auto-filling, filling time in stocky mechanism on dolly carry out stocky to raw material;
(4) tying: after filling completing, the bag clamping device on middle dolly is clamped sack to deliver to tying station, and the exhaust gear on bag clamping device carries out exhaust to sack, blowning installation arranges sack simultaneously; Sack is sent to after tying station, torsion is opened bag and torsion and is grabbed bag and clamp respectively and catch inside and outside bag, first reversed to internal bag by torsion device, carry out tying by opening tying device afterwards, complete tying retrotorsion and open bag and torsion and grab and bag outer bag is opened, and by torsion device, inner bag is filled in to outer bag, bag brood sac device sack of holding up on rear dolly is served conveyer, the sack of sack is carried out shaping by opening shaping, by sewing machine, outer bag sewed up afterwards, after completing, by conveyer, sack exported.
The beneficial effects of the utility model are: wrapping machine of the present utility model has changed original manual operations, realize automatic bag feeding, inner bag arrangement, sack centering, feed stocky, reverse tying etc., workman's labour intensity is low, speed of production is fast, quality is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is left view of the present utility model.
Fig. 3 is the CONSTRUCTED SPECIFICATION figure of the utility model cleaning plant.
Fig. 4 is the CONSTRUCTED SPECIFICATION figure of the utility model bagging device.
Fig. 5 is the enlarged drawing of the arrangement of the utility model inner bag, feedway and aligning gear.
Fig. 6 is the enlarged drawing of the utility model buffering bucket, automatic balance and scale upper lock gate.
Fig. 7 is the enlarged drawing of the utility model sewing machine and opening shaping.
Fig. 8 is the enlarged drawing that the utility model is held up bag brood sac device.
Fig. 9 is the enlarged drawing that reverses station in the utility model.
Figure 10 is the enlarged drawing of the canned station of the utility model.
Figure 11 is the enlarged drawing of the utility model fixing device.
Figure 12 is the enlarged drawing of the utility model bag taking device.
Figure 13 is the lateral plan of the utility model buffering bucket.
Wherein: the upper bag of 1-platform, 2-bagging device, 3-inner bag arranges, 4-feedway, 5-aligning gear, 6-buffering bucket, 7-cleaning plant, 8-automatic balance, 9-scale upper lock gate, 10-sewing machine, 11-opening shaping, 12-holds up a bag brood sac device, 13-opening tying device, 14-reverses and opens bag, 15-torsion device, 16-reverses and grabs bag, 17-bag clamping device, 18-blowing gate, 19-telescopic pipe, bag is opened in 20-charging, bag is grabbed in 21-charging, 22-bag taking device, dolly before 23-, 24-exhaust gear, 25-blowning installation, the stocky device of 26-, dolly in 27-, dolly after 28-, 29-conveyer, 30-guide rail, 31-frame, 32-splitting drives cylinder, 33-vacuum cup, 34-brush roll, 35-gas pawl.
The specific embodiment
In order to deepen, to understanding of the present utility model, below in conjunction with drawings and Examples, the utility model to be described in further detail, this embodiment, only for explaining the utility model, does not form and limits protection domain of the present utility model.
If Fig. 1-13 the utility model is a kind of automatic double-layer bag package machine, comprise frame 31, in described frame 31, be provided with track 30, described track 30 is for front dolly 23, middle dolly 27 and rear dolly 28 use, in described frame 31, be provided with bag station, inner bag arranges station, centering station, filling station, reverse tying station, sewing workstation, before described upper bag station is positioned at inner bag arrangement station, before inner bag arrangement station is positioned at centering station, before centering station is positioned at filling station, before filling station is positioned at and reverses tying station, before torsion tying station is positioned at sealing station, described upper bag station comprises puts bag platform 1 and bagging device 2, one end of described bagging device 2 is provided with and drives the splitting of described bagging device 2 to drive cylinder 32, it is the vacuum cup 33 that separates sack at the other end of described bagging device 2, workman by one folded or how folded double-ply bag put on bag platform 1 described in being placed on, bagging device 2 is taken single bilayered bag send into away on inner bag collating unit 3 and smooths, then sending into aligning gear 5, described inner bag arranges station and comprises inner bag collating unit 3 and feedway 4, described inner bag collating unit 3 comprises the brush roll 34 arranging to internal bag, described feedway 4 is band conveyor, double-ply bag is delivered to described inner bag collating unit 3 by described bagging device 2 in described upper bag station, sack after smoothing by the brush roll 34 on described inner bag collating unit 3 is delivered to the aligning gear 5 of centering station by described band conveyor, described aligning gear 5 is by interior outer bag centering, on described front dolly 23, bag taking device 22 is set sack is delivered to filling station, on described bag taking device 22, be provided with in crawl, the gas pawl 35 of outer bag, by air cylinder driven, described filling station comprises telescopic pipe 19, be provided with blowing gate 18 on the top of described telescopic pipe 19, be provided with buffering bucket 6 in described blowing gate 18 upper ends, above described buffering bucket 6, be provided with automatic balance 8, the top of described automatic balance 8 is scale upper lock gate 9, described automatic balance 8 and scale upper lock gate 9 weigh up the raw material of predetermined weight and pack in described buffering bucket 6, the charging that sackholder is lived inside and outside the surrounding of described telescopic pipe 19 is provided with double-deck sack open bag 20 and by double-deck sack inside and outside a bag charging of holding grab bag 21, described charging is opened bag 20 and charging and is grabbed bag and 21 sack is opened, described telescopic pipe 19 stretches in double-deck sack, open described blowing gate 18, raw material is fallen into described double-deck sack and is realized automatic canning, after canned completing, clamp to deliver to by the bag clamping device 17 on described middle dolly 27 and reverse tying station, described torsion tying station comprises torsion device 15 and is positioned at the opening tying device 13 of described torsion device 15 belows, right side, one reverses and opens bag 14 and reverse fore-and-aft direction and the left and right directions of grabbing bag 16 centre and be separately positioned on torsion device 15, torsion is opened bag and is reversed fore-and-aft direction and the left and right directions of grabbing bagging apparatus and be separately positioned on torsion device, in the middle of namely torsion device is positioned at, first reverse to internal bag by described torsion device 15, carry out tying by described opening tying device 13 again, completing after tying described torsion opens bag 14 and torsion and grabs bag 16 outer bag is opened, and by described torsion device 15, inner bag is filled in to outer bag, after completing, by bag brood sac device 12 of holding up of the connecting rod mechanism by air cylinder driven on described rear dolly 28, sack is served to conveyer 29, described conveyer 29 is sent sack into sealing station, described sealing station comprises the opening shaping 11 that the sack of sack is carried out to shaping, be provided with the sewing machine 10 that outer bag is sewed up at the right-hand member of described opening shaping 11, the sack that completes sewing is exported by described conveyer 29, complete automatic bag feeding, inner bag arranges, sack centering, feed stocky and reverse the entire exercise such as tying, it is a kind of automatic packaging machine, on described middle dolly 27, be provided with the raw material in double-deck sack is carried out to stocky stocky mechanism 26, described stocky mechanism 26 adds connecting rod mechanism by cylinder or cylinder and drives, adding connecting rod mechanism by cylinder or cylinder carries out stocky to double-deck sack, on the described bag clamping device 17 being arranged on dolly, be provided with sack is carried out to the exhaust gear 24 of exhaust and the blowning installation 25 that sack is arranged, described exhaust gear 24 adds flexible gas-filled installation composition by exhaustion plate or by the exhaustion plate of compressed air-driven, the organ pipe that blows that described blowning installation 25 is driven by pressurized air or blower fan forms, above described buffering bucket 6, be provided with cleaning plant 7, described cleaning plant 7 is the compressed-air actuated nozzle of clearing up buffering bucket 6 of ejection, the preferred amount of nozzle is three, the pressurized air spraying by multiple nozzles is cleaned out the packing particle in buffering bucket.
A kind of wrapping machine of automatic double-layer bag comprises the steps:
(1) upper bag: be placed on bag platform 1 by manually folding one or folding double-ply bag more;
(2) arrangement, centering: bagging device 2 is taken single bilayered bag send into away on inner bag collating unit 3, arranges 3 sack is smoothed by inner bag, by feedway 4, sack is delivered to aligning gear 5 after smoothing, and aligning gear 5 is by interior outer bag centering;
(3) filling, stocky: filling station delivered to by sack by the bag taking device 22 on front dolly 23, charging is opened bag 20 by double-ply bag, outer bag is clamped, charging is grabbed bag 21 by double-ply bag, outer bag is held, front dolly 23 returns and the bag 20 of feeding out afterwards, charging is grabbed bag 21 sack punching is prepared filling, now automatic balance 8, scale upper lock gate 9 weighs up the raw material of predetermined weight and packs in buffering bucket 6, telescopic pipe 19 puts in double-ply bag and opens, blowing gate 18 is opened blowing and is realized auto-filling, stocky mechanism 26 in filling time on dolly 27 carries out stocky to raw material,
(4) tying: after filling completing, the bag clamping device 17 on middle dolly 27 is clamped sack to deliver to tying station, and the exhaust gear 24 on bag clamping device 17 carries out exhaust to sack, blowning installation 25 arranges sack simultaneously; Sack is sent to after tying station, torsion is opened bag 14 and torsion and is grabbed bag 16 and clamp respectively and catch inside and outside bag, first reversed to internal bag by torsion device 15, carry out tying by opening tying device 13 afterwards, completing tying retrotorsion opens bag 14 and torsion and grabs bag and 16 outer bag is opened, and by torsion device 15, inner bag is filled in to outer bag, conveyer 29 served by sack by bag brood sac device 12 of holding up on rear dolly 28, the sack of sack is carried out shaping by opening shaping 11, by sewing machine 10, outer bag is sewed up afterwards, after completing, by conveyer 29, sack is exported.
Claims (9)
1. an automatic double-layer bag package machine, comprise frame (31), in described frame (31), be provided with track (30), described track (30) is for front dolly (23), middle dolly (27) and rear dolly (28) use, it is characterized in that: in described frame (31), be provided with upper bag station, inner bag arranges station, centering station, filling station, reverse tying station, sewing workstation, before described upper bag station is positioned at inner bag arrangement station, before inner bag arrangement station is positioned at centering station, before centering station is positioned at filling station, before filling station is positioned at and reverses tying station, before torsion tying station is positioned at sealing station.
2. a kind of automatic double-layer bag package machine according to claim 1, it is characterized in that: described upper bag station comprises puts a bag platform (1) and bagging device (2), one end of described bagging device (2) is provided with and drives the splitting of described bagging device (2) to drive cylinder (32), is the vacuum cup (33) that separates sack at the other end of described bagging device (2).
3. a kind of automatic double-layer bag package machine according to claim 2, it is characterized in that: described inner bag arranges station and comprises inner bag collating unit (3) and feedway (4), described inner bag collating unit (3) comprises the brush roll (34) arranging to internal bag, described feedway (4) is band conveyor, double-ply bag is delivered to described inner bag collating unit (3) by described upper bag station, sack after smoothing by the brush roll (34) on described inner bag collating unit (3) is delivered to the aligning gear (5) of centering station by described band conveyor, described aligning gear (5) is by interior outer bag centering, bag taking device (22) is set on described front dolly (23) sack is delivered to filling station, on described bag taking device (22), be provided with in crawl, the gas pawl (35) of outer bag, by air cylinder driven.
4. a kind of automatic double-layer bag package machine according to claim 3, it is characterized in that: described filling station comprises telescopic pipe (19), be provided with blowing gate (18) on the top of described telescopic pipe (19), be provided with buffering bucket (6) in described blowing gate (18) upper end, be provided with automatic balance (8) in the top of described buffering bucket (6), the top of described automatic balance (8) is scale upper lock gate (9), described automatic balance (8) and scale upper lock gate (9) weigh up the raw material of predetermined weight and pack in described buffering bucket (6), the charging that sackholder is lived inside and outside the surrounding of described telescopic pipe (19) is provided with double-deck sack open bag (20) and by double-deck sack inside and outside a bag charging of holding grab bag (21), described charging is opened bag (20) and charging and is grabbed bag (21) sack is opened, described telescopic pipe (19) stretches in double-deck sack and opens, open described blowing gate (18), raw material is fallen into described double-deck sack and is realized automatic canning, after canned completing, clamp to deliver to by the bag clamping device (17) on described middle dolly (27) and reverse tying station.
5. a kind of automatic double-layer bag package machine according to claim 4, it is characterized in that: described torsion tying station comprises torsion device (15) and is positioned at the opening tying device (13) of below, described torsion device (15) right side, one reverses fore-and-aft direction and the left and right directions of opening bag (14) and torsion and grab the centre of bag (16) and be separately positioned on torsion device (15), first reverse to internal bag by described torsion device (15), carry out tying by described opening tying device (13) again, completing after tying described torsion opens bag (14) and torsion and grabs bag (16) outer bag is opened, and by described torsion device (15), inner bag is filled in to outer bag, conveyer (29) served by sack by bag brood sac device (12) of holding up by the connecting rod mechanism by air cylinder driven on described rear dolly (28) after completing, described conveyer (29) is sent sack into sealing station.
6. a kind of automatic double-layer bag package machine according to claim 5, it is characterized in that: described sealing station comprises the opening shaping (11) that the sack of sack is carried out to shaping, be provided with the sewing machine (10) that outer bag is sewed up at the right-hand member of described opening shaping (11), complete the sack of sewing by described conveyer (29) output.
7. a kind of automatic double-layer bag package machine according to claim 1, it is characterized in that: on described middle dolly (27), be provided with the raw material in double-deck sack is carried out to stocky stocky mechanism (26), described stocky mechanism (26) adds connecting rod mechanism by cylinder or cylinder and drives.
8. a kind of automatic double-layer bag package machine according to claim 4, it is characterized in that: on the described bag clamping device (17) being arranged on dolly, be provided with sack is carried out to the exhaust gear (24) of exhaust and the blowning installation (25) that sack is arranged, described exhaust gear (24) adds flexible gas-filled installation composition by exhaustion plate or by the exhaustion plate of compressed air-driven, and the organ pipe that blows that described blowning installation (25) is driven by pressurized air or blower fan forms.
9. a kind of automatic double-layer bag package machine according to claim 4, is characterized in that: be provided with cleaning plant (7) in the top of described buffering bucket (6), described cleaning plant (7) is the compressed-air actuated nozzle of clearing up buffering bucket (6) of ejection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738167.9U CN203601589U (en) | 2013-11-21 | 2013-11-21 | Full-automatic double-layer-bag packaging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738167.9U CN203601589U (en) | 2013-11-21 | 2013-11-21 | Full-automatic double-layer-bag packaging machine |
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| CN203601589U true CN203601589U (en) | 2014-05-21 |
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| CN201320738167.9U Expired - Fee Related CN203601589U (en) | 2013-11-21 | 2013-11-21 | Full-automatic double-layer-bag packaging machine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104276310A (en) * | 2014-07-22 | 2015-01-14 | 合肥三冠包装科技有限公司 | Bag sucking and bag transmitting structure of packaging machine |
| CN104494858A (en) * | 2014-12-23 | 2015-04-08 | 哈尔滨联科包装机械有限公司 | Automatic folded edge seaming double-station packer |
| CN104648703A (en) * | 2013-11-21 | 2015-05-27 | 江苏万乐复合材料有限公司 | Full-automatic double-layer bag packaging machine |
| CN105059574A (en) * | 2015-08-11 | 2015-11-18 | 安徽远鸿机械自动化有限公司 | Powder bagging control method |
| CN105501553A (en) * | 2016-01-28 | 2016-04-20 | 武汉大学 | Device applied to tying of inner bag of bilayer packaging bag |
| CN105523234A (en) * | 2016-01-28 | 2016-04-27 | 武汉大学 | Rotary tying device for inner bag of double-layer packaging bag and tying method thereof |
| CN106240856A (en) * | 2016-08-26 | 2016-12-21 | 赛摩电气股份有限公司 | A kind of automatic Powder packaging system |
| CN110182415A (en) * | 2019-04-26 | 2019-08-30 | 张琳 | Bacterium bag auto-welting machine grabs pier device for lifting bags |
| CN111319826A (en) * | 2020-03-12 | 2020-06-23 | 武汉轻工大学 | Packaging bag opening tightening device |
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2013
- 2013-11-21 CN CN201320738167.9U patent/CN203601589U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104648703A (en) * | 2013-11-21 | 2015-05-27 | 江苏万乐复合材料有限公司 | Full-automatic double-layer bag packaging machine |
| CN104648703B (en) * | 2013-11-21 | 2017-04-12 | 江苏万乐复合材料有限公司 | Full-automatic double-layer bag packaging machine |
| CN104276310A (en) * | 2014-07-22 | 2015-01-14 | 合肥三冠包装科技有限公司 | Bag sucking and bag transmitting structure of packaging machine |
| CN104494858A (en) * | 2014-12-23 | 2015-04-08 | 哈尔滨联科包装机械有限公司 | Automatic folded edge seaming double-station packer |
| CN105059574A (en) * | 2015-08-11 | 2015-11-18 | 安徽远鸿机械自动化有限公司 | Powder bagging control method |
| CN105501553A (en) * | 2016-01-28 | 2016-04-20 | 武汉大学 | Device applied to tying of inner bag of bilayer packaging bag |
| CN105523234A (en) * | 2016-01-28 | 2016-04-27 | 武汉大学 | Rotary tying device for inner bag of double-layer packaging bag and tying method thereof |
| CN105523234B (en) * | 2016-01-28 | 2017-10-24 | 武汉大学 | A kind of device and its tying method that tying is rotated applied to double casing inner bag |
| CN106240856A (en) * | 2016-08-26 | 2016-12-21 | 赛摩电气股份有限公司 | A kind of automatic Powder packaging system |
| CN106240856B (en) * | 2016-08-26 | 2018-08-07 | 赛摩电气股份有限公司 | A kind of automatic Powder packaging system |
| CN110182415A (en) * | 2019-04-26 | 2019-08-30 | 张琳 | Bacterium bag auto-welting machine grabs pier device for lifting bags |
| CN111319826A (en) * | 2020-03-12 | 2020-06-23 | 武汉轻工大学 | Packaging bag opening tightening device |
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Granted publication date: 20140521 Termination date: 20171121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |