CN106945343A - The preparation method and system of envelope type paper bag - Google Patents
The preparation method and system of envelope type paper bag Download PDFInfo
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- CN106945343A CN106945343A CN201710174337.8A CN201710174337A CN106945343A CN 106945343 A CN106945343 A CN 106945343A CN 201710174337 A CN201710174337 A CN 201710174337A CN 106945343 A CN106945343 A CN 106945343A
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Abstract
The invention provides a kind of preparation method and system of envelope type paper bag, in this method, for each paper material, perform the following steps：S1：The gumming mechanism carries out gluing processing to the paper material in gluing station；S2：The vertical edge mechanism turns down the side of the paper material；S3：The left and right edge-folding mechanism is by under the side backfin of the paper material in left and right flanging station；S4：The folding bottom mechanism has turned down the bottom of the paper material in folding bottom station and under backfin；S5：The hold-down mechanism will be compressed in the paper material for compressing station, obtain required paper bag；S6：It is described go out bag mechanism realize in output station paper bag discharging；Wherein, the rotating disk mechanism sequentially passed through the gluing station, vertical edge station, left and right flanging station, folding bottom station, compression station, output station by rotation in one week, so as to be returned to the gluing station.
Description
Technical field
The present invention relates to paper bag field, more particularly to a kind of preparation method and system of envelope type paper bag.
Background technology
As long as the paper that the material of sack has contained a part may be referred to collectively as paper bag.The various types of paper bag, the material of paper
Expect that numerous in variety, style is also a lot.It can be divided into by material：Art post paperboard paper bag, white board paper bag, art paper paper bag, brown paper paper
Bag, it is speciality paper manufacture on a small quantity to also have.
Wherein, the making of paper bag, being made as of especially current ultra-narrow paper bag is made by hand entirely, it is impossible to ensure that finished product is consistent
Property.
The content of the invention
The disclosure technical problem to be solved is how to realize the automated production of ultra-narrow paper bag.
According to an aspect of this disclosure there is provided a kind of preparation method of envelope type paper bag, comprise the following steps：
S0：Rotating disk mechanism and the gumming mechanism located at the rotating disk mechanism periphery, vertical edge mechanism, left and right folding brake are provided
Structure, folding bottom mechanism, hold-down mechanism and go out bag mechanism；
For each paper material, perform the following steps：
S1：The paper material is sent on the rotating disk mechanism by paper advance mechanism, and reaches gluing station, the gluing
Mechanism carries out gluing processing to the paper material in gluing station；
S2：The rotating disk mechanism is rotated, so that the paper material reaches vertical edge station, and the vertical edge mechanism is by institute
The side for stating paper material is turned down；
S3：The rotating disk mechanism is rotated, so that the paper material reaches left and right flanging station, the left and right flanging
Mechanism is by under the side backfin of the paper material in left and right flanging station；
S4：The rotating disk mechanism is rotated, so that the paper material reaches folding bottom station, the folding bottom mechanism
The bottom of paper material in folding bottom station is turned down and under backfin；
S5：The rotating disk mechanism is rotated, so that the paper, which is reached, compresses station, the hold-down mechanism will be in pressure
The paper material of tight station is compressed, and obtains required paper bag；
S6：The rotating disk mechanism is rotated, so that the paper reaches output station, it is described go out bag mechanism realize and be in
The discharging of the paper bag of output station；
Wherein, the rotating disk mechanism sequentially passed through the gluing station, vertical edge station, left and right flanging work by rotation in one week
Position, folding bottom station, compression station, output station, so as to be returned to the gluing station.
According to one of which embodiment, in the step S0, profiled sheeting is additionally provided, at least in the step S2 extremely
In S4, the paper material is in the state of the profiled sheeting is pressed on, respectively by the vertical edge mechanism, left and right edge-folding mechanism
With the processing of folding bottom mechanism.
According to one of which embodiment, the vertical edge mechanism includes perpendicular paper knife, in the step S2, has turned down the paper
When opening the side of material, the angle of the perpendicular paper knife and the paper base portion of the paper material is acute angle, and then by described perpendicular
The vertical motion of paper knife turns down the side of the paper material.
According to one of which embodiment, the left and right edge-folding mechanism includes side paper folding knife, in the step S3, described
Paper folding knife in side is by moving horizontally the side turned down of paper material described in backfin.
According to one of which embodiment, jack knife and back cover lid jack knife are holded up including bottom by the folding bottom mechanism, in institute
Step S4 is stated, the bottom holds up jack knife and the bottom of the paper material turned down by vertical motion, the back cover lid folding
Knife is by horizontal movement by under the bottom backfin of the paper material.
According to another aspect of the present disclosure there is provided a kind of manufacturing system of envelope type paper bag, including rotating disk mechanism and
Located at the gumming mechanism of the rotating disk mechanism periphery, vertical edge mechanism, left and right edge-folding mechanism, folding bottom mechanism, hold-down mechanism and
Go out bag mechanism, the gumming mechanism carries out gluing processing to the paper material in gluing station；The vertical edge mechanism will be in
The side of the paper material of the vertical edge station is turned down；The left and right edge-folding mechanism is by the paper in left and right flanging station
Under the side backfin for opening material；The folding bottom mechanism has turned down the bottom of the paper material in folding bottom station and backfin
Under；The hold-down mechanism will be compressed in the paper material for compressing station, obtain required paper bag；It is described go out bag mechanism realize be in
The discharging of the paper bag of output station；It is described that the rotating disk mechanism enables the paper being transmitted thereon to sequentially pass through by rotation
Gluing station, vertical edge station, left and right flanging station, folding bottom station, compression station and output station.
According to one of which embodiment, the manufacturing system of described envelope type paper bag also includes feeding mechanism, it is described enter
Material mechanism includes feed bin, suction nozzle, feeding rod and picks bar, the paper material in the suction feed bin, the feeding rod
Paper material on suction nozzle is delivered into pretreated locations, the bar of picking is by swinging the paper in the pretreated locations
Material pushes to the gluing station correspondence position.
According to one of which embodiment, the manufacturing system of described envelope type paper bag also includes profiled sheeting, the paper
Material is in the state of the profiled sheeting is pressed on, respectively by the vertical edge mechanism, left and right edge-folding mechanism and folding bottom mechanism
Processing.
According to one of which embodiment, the vertical edge mechanism includes perpendicular paper knife, the perpendicular paper knife and the paper material
The angle of paper base portion be acute angle, and then pass through the vertically movable side by the paper material of the perpendicular paper knife and turn down
Rise；
The left and right edge-folding mechanism includes side paper folding knife, and the side paper folding knife is by moving horizontally paper described in backfin
The side turned down of material.
According to one of which embodiment, jack knife and back cover lid jack knife are holded up including bottom by the folding bottom mechanism, described
Bottom holds up jack knife and is turned down the bottom of the paper material by vertical motion, and the back cover lid jack knife passes through horizontal movement
By under the bottom backfin of the paper material.
On the one hand the disclosure introduces gumming mechanism, vertical edge mechanism, left and right edge-folding mechanism, folding bottom mechanism, hold-down mechanism
And go out bag mechanism, gluing, vertical edge, left and right flanging, folding bottom, compression and output can be realized successively, so as to realize the system of paper bag
Make, on the other hand, it also introduces rotating disk to realize that the procedure of each operating procedure is handled, and ensures that multiple paper can be distinguished simultaneously
Handled, to improve the operating efficiency of automatically working.
Brief description of the drawings
Fig. 1 is the expanded schematic diagram of envelope type paper bag in an alternate embodiment of the present invention；
Fig. 2 is the schematic diagram of envelope type paper bag and profiled sheeting in an alternate embodiment of the present invention；
Fig. 3 a to Fig. 3 f are the schematic flow sheets made in an alternate embodiment of the present invention；
Fig. 4 is the principle schematic of left and right vertical edge in an alternate embodiment of the present invention；
Fig. 5 is the schematic diagram of vertical edge mechanism in an alternate embodiment of the present invention；
Fig. 6 is the schematic diagram of left and right edge-folding mechanism in an alternate embodiment of the present invention；
Fig. 7 is the schematic diagram of an alternate embodiment of the present invention Zhong Zhe bottoms mechanism；
Fig. 8 is the schematic diagram of the manufacturing system of envelope type paper bag in an alternate embodiment of the present invention；
In figure, 1- paper materials；100- paper base portions；101st, 102- sides；103- bottoms；2- profiled sheetings；3、31、32、
33- frameworks；4- rotating disk mechanisms；5- vertical edges mechanism；50- erects paper knife；51- erects paper drive device；6- or so edge-folding mechanisms；60- sides
Side paper folding knife；61- sides paper folding drive device；7- folding bottoms mechanism；71- bottoms hold up jack knife；72- bottoms hold up driving dress
Put；73- back cover lid jack knives；74- back cover lid paper folding drive devices；8- feeding mechanisms；81- feed bins；82- feeding rods；83- suction nozzles；
84- pendulum inhales paper bar；85- suction and conveying paper pendulum guide rods；86- picks bar；9- gumming mechanisms；91- gluing cams；92- gluing swing rods；
93- takes glue gluing rubber slab；94- glue；95- spreading knifes；96- rubber tires；10- hold-down mechanisms；11- goes out bag mechanism；12- pinch rollers；
13- pinch rollers；14- discharging rods.
Embodiment
Preparation method and system below with reference to Fig. 1 to Fig. 8 envelope type paper bags provided the present invention are carried out in detail
Description, it is optional embodiment of the present invention, it is believed that those skilled in the art are not changing spirit of the invention and content
In the range of, it can be modified and polished.
Before holder method and system is introduced, first paper material 1 is described in detail, Fig. 1 is refer to, and combine
Fig. 2, including paper base portion, two sides located at the paper base portion both sides and the bottom located at described paper base portion one end；
Based on this there is provided a kind of preparation method of envelope type paper bag, comprise the following steps：
S0：Rotating disk mechanism 4 and the gumming mechanism 9 located at the periphery of rotating disk mechanism 4, vertical edge mechanism 5, left and right folding are provided
Side mechanism 6, folding bottom mechanism, hold-down mechanism 10 and go out bag mechanism 11；
For each paper material 1, perform the following steps：
S1：The paper material 1 is sent on the rotating disk mechanism 4 by paper advance mechanism, and reach gluing station, it is described on
9 pairs of paper materials 1 in gluing station of gluing mechanism carry out gluing processing；Refer to Fig. 3 a understandings；
S2：The rotating disk mechanism 4 is rotated, so that the paper material 1 reaches vertical edge station, the vertical edge mechanism 5
The side 101 and 102 of the paper material 1 is turned down；Refer to Fig. 3 b understandings；
S3：The rotating disk mechanism 4 is rotated, so that the paper material 1 reaches left and right flanging station, the left and right folding
Side mechanism 6 is by under the backfin of side 101 and 102 of the paper material 1 in left and right flanging station；Refer to Fig. 3 c understandings；
S4：The rotating disk mechanism 4 is rotated, so that the paper material 1 reaches folding bottom station, the folding bottom cover machine
Structure has turned down the bottom 103 of the paper material 1 in folding bottom station and under backfin；Refer to Fig. 3 d understandings；
S5：The rotating disk mechanism 4 is rotated, so that the paper, which is reached, compresses station, the hold-down mechanism 10 will be located
Compressed in the paper material 1 for compressing station, obtain required paper bag；Refer to Fig. 3 e understandings；
S6：The rotating disk mechanism 4 is rotated so that the paper reach output station, it is described go out bag mechanism 11 realize
The discharging of paper bag in output station；Refer to Fig. 3 f understandings；
Wherein, the rotating disk mechanism 4 sequentially passed through the gluing station, vertical edge station, left and right flanging by rotation in one week
Station, folding bottom station, compression station, output station, so as to be returned to the gluing station.
The embodiment illustrated according to Fig. 3 and Fig. 4, in the step S0, additionally provides profiled sheeting 2, at least described
Step S2 into S4, the paper material 1 in the state of the profiled sheeting 2 is pressed on, respectively by the vertical edge mechanism 5,
Left and right edge-folding mechanism 6 and the processing of folding bottom mechanism.Certainly, profiled sheeting 2 can also be applied to gumming mechanism 9, hold-down mechanism 10 and
Go out at least one of bag mechanism 11, and be not limited to the above.
The embodiment illustrated according to Fig. 4 and Fig. 5, the vertical edge mechanism 5 includes perpendicular paper knife 50, in the step S2, turns over
When turning up side 101 and 102 of the paper material 1, the perpendicular paper knife 50 and the paper base portion 100 of the paper material 1
Angle is acute angle, and then is turned down the side 101 and 102 of the paper material 1 by the vertical motion of the perpendicular paper knife 50.
Vertical edge mechanism 5 also includes perpendicular paper drive device 51, and the perpendicular paper knife 50 carries out elevating movement by the perpendicular paper drive device driving.
The embodiment illustrated according to Fig. 6, the left and right edge-folding mechanism 6 includes side paper folding knife 60, in the step S3,
The side paper folding knife 60 is by moving horizontally the side 101 and 102 turned down of paper material 1 described in backfin.It is described
Side paper folding knife 60 is driven by side paper folding drive device 61 and moved horizontally.
Jack knife 71 and back cover lid jack knife 73 are holded up including bottom by the embodiment illustrated according to Fig. 7, the folding bottom mechanism,
In the step S4, the bottom holds up jack knife 71 and has been turned down the bottom 103 of the paper material 1 by vertical motion, and
The bottom holds up jack knife 71 and holds up the powered motion of drive device 72 by bottom, and the back cover lid jack knife 73 will by horizontal movement
Under the backfin of bottom 103 of the paper material 1, and the back cover lid jack knife 73 is by back cover lid paper folding drive device powered motion.
In the embodiment that Fig. 8 illustrates, feeding mechanism 88 also includes feed bin 81, feeding rod 82, suction nozzle 83；Pendulum inhales paper bar
84th, suction and conveying paper pendulum guide rod 85 and bar 86 is picked；
In summary, bar 82 is picked when suction nozzle is drawn paper from feed bin 8181 and sent to, picks bar 82 and make the multiple motion of pendulum,
The scraps of paper pass through profiled sheeting 2 and touch locating dowel with square frame, and profiled sheeting 2 is moved downward between the clamping scraps of paper and square frame, in 2 liang of profiled sheeting
Motion forces two edge profiled sheetings 2 of the scraps of paper to be holded up to the perpendicular paper knife 50 on side upwards, and side paper folding knife 60 makees the multiple motion of pendulum, forces paper
The side 101 and 102 of piece coincide with profiled sheeting 2, while coordinate operation makes scraps of paper both sides that profiled sheeting 2 is wrapped up, back cover lid
Jack knife 73 bottom hold up jack knife 71 it is reciprocating bottom 103 along the end face of profiled sheeting 2 fold back cover, bag folding process complete.
It is corresponding, according to another aspect of the present disclosure, Fig. 8 is refer to, and there is provided a kind of envelope type for combination other accompanying drawings
The manufacturing system of paper bag, including rotating disk mechanism 4 and the gumming mechanism 9 located at the periphery of rotating disk mechanism 4, vertical edge mechanism 5, a left side
Right edge-folding mechanism 6, folding bottom mechanism, hold-down mechanism 10 and go out bag mechanism 11,9 pairs of the gumming mechanism is in gluing station
Paper material 1 carries out gluing processing；The vertical edge mechanism 5 is by the side 101 of the paper material 1 in the vertical edge station
Turned down with 102；The left and right edge-folding mechanism 6 is by the backfin of side 101 and 102 of the paper material 1 in left and right flanging station
Under；The folding bottom mechanism has turned down the bottom 103 of the paper material 1 in folding bottom station and under backfin；It is described to compress
Mechanism 10 will be compressed in the paper material 1 for compressing station, obtain required paper bag；It is described go out bag mechanism 11 realize be in output work
The discharging of the paper bag of position；The rotating disk mechanism 4 enables the paper being transmitted thereon to sequentially pass through the gluing by rotation
Station, vertical edge station, left and right flanging station, folding bottom station, compression station and output station.
The embodiment illustrated according to Fig. 8, the manufacturing system of described envelope type paper bag also includes feeding mechanism 8, described
Feeding mechanism 8 includes feed bin 81, suction nozzle 83, feeding rod 82 and picks bar 86, the paper in the absorption of suction nozzle 83 feed bin 81
Paper material 1 on suction nozzle 83 is delivered to pretreated locations by material 1, the feeding rod 82, and the bar 86 of picking will by swinging
Paper material 1 in the pretreated locations pushes to the gluing station correspondence position.
The embodiment illustrated according to Fig. 4, the manufacturing system of described envelope type paper bag also includes profiled sheeting 2, the paper
Material 1 is opened in the state of the profiled sheeting 2 is pressed on, respectively by the vertical edge mechanism 5, left and right edge-folding mechanism 6 and folding bottom
Lid mechanism processing.Certainly, profiled sheeting 2 can also be applied to gumming mechanism 9, hold-down mechanism 10 and go out in bag mechanism 11 at least it
One, and it is not limited to the above.
The embodiment illustrated according to Fig. 6, the vertical edge mechanism 5 includes perpendicular paper knife 50, the perpendicular paper knife 50 and the paper
The angle for opening the paper base portion 100 of material 1 is acute angle, and then passes through the vertically movable by the paper material of the perpendicular paper knife 50
1 side 101 and 102 is turned down；
The way of example illustrated according to Fig. 4 and Fig. 5, the left and right edge-folding mechanism 6 includes side paper folding knife 60, the side
Side paper folding knife 60 is by moving horizontally the side 101 and 102 turned down of paper material 1 described in backfin.
Jack knife 71 and back cover lid jack knife 73 are holded up including bottom by the embodiment illustrated according to Fig. 7, the folding bottom mechanism,
The bottom holds up jack knife 71 and has been turned down the bottom 103 of the paper material 1 by vertical motion, the back cover lid jack knife 73
By horizontal movement by under the backfin of bottom 103 of the paper material 1.
In the embodiment of Fig. 8 signals, gumming mechanism 9 includes gluing cam 91, gluing swing rod 92, takes glue gluing rubber slab
93rd, glue 94, spreading knife 95 and rubber tire 96, the spreading knife 95 are scraped in the rubber tire surface, and the rubber tire 96 is rolled in institute
Glue 95 is stated, glue gluing rubber slab 93 is taken so that the glue on treating is transferred to gluing swing rod 92, the gluing cam 91 by described
Drive the gluing swing rod 92 to move, and then the glue on treating is supplied to the gluing station.
In addition, in the embodiment of Fig. 8 signals, going out bag mechanism 11 and also connecting discharging rod 14, the pinch roller by pinch roller assembly
Component includes pinch roller 12 and pinch roller 13.
It can be seen that, alternative of the present invention is completed scraps of paper feeding, gluing around it, erected centered on the motion of rotating disk mechanism 4
Side, left and right flanging, folding bottom, flatten, discharge, offseting the range of motion such as neat material.
Specific station, can also refer to below table understanding：
In summary, the disclosure on the one hand introduce gumming mechanism, vertical edge mechanism, left and right edge-folding mechanism, folding bottom mechanism,
Hold-down mechanism and go out bag mechanism, gluing, vertical edge, left and right flanging, folding bottom, compression and output can be realized successively, so as to realize
The making of paper bag, on the other hand, it also introduces rotating disk to realize that the procedure of each operating procedure is handled, and ensures that multiple paper can be with
It is respectively processed simultaneously, to improve the operating efficiency of automatically working.
Claims (10)
1. a kind of preparation method of envelope type paper bag, it is characterised in that：Comprise the following steps：
S0：There is provided rotating disk mechanism and the gumming mechanism located at the rotating disk mechanism periphery, vertical edge mechanism, left and right edge-folding mechanism,
Roll over bottom mechanism, hold-down mechanism and go out bag mechanism；
For each paper material, perform the following steps：
S1：The paper material is sent on the rotating disk mechanism by paper advance mechanism, and reaches gluing station, the gumming mechanism
Gluing processing is carried out to the paper material in gluing station；
S2：The rotating disk mechanism is rotated, so that the paper material reaches vertical edge station, and the vertical edge mechanism is by the paper
The side for opening material is turned down；
S3：The rotating disk mechanism is rotated, so that the paper material reaches left and right flanging station, the left and right edge-folding mechanism
By under the side backfin of the paper material in left and right flanging station；
S4：The rotating disk mechanism is rotated, so that the paper material reaches folding bottom station, the folding bottom mechanism Jiang Chu
In the bottom turnover of the paper material of folding bottom station and under backfin；
S5：The rotating disk mechanism is rotated, so that the paper, which is reached, compresses station, the hold-down mechanism will be in compression work
The paper material of position is compressed, and obtains required paper bag；
S6：The rotating disk mechanism is rotated, so that the paper reaches output station, it is described go out bag mechanism realize and be in output
The discharging of the paper bag of station；
Wherein, the rotating disk mechanism by one week rotation sequentially pass through the gluing station, vertical edge station, left and right flanging station,
Roll over bottom station, station, output station are compressed, so as to be returned to the gluing station.
2. the preparation method of envelope type paper bag as claimed in claim 1, it is characterised in that：In the step S0, also provide
Profiled sheeting, at least in the step S2 into S4, the paper material is in the state of the profiled sheeting is pressed on, respectively
By the vertical edge mechanism, left and right edge-folding mechanism and the processing of folding bottom mechanism.
3. the preparation method of envelope type paper bag as claimed in claim 1, it is characterised in that：The vertical edge mechanism includes perpendicular paper
Knife, in the step S2, when having turned down the side of the paper material, the paper base portion of the perpendicular paper knife and the paper material
Angle be acute angle, and then by the perpendicular paper knife vertical motion the side of the paper material is turned down.
4. the preparation method of envelope type paper bag as claimed in claim 1, it is characterised in that：The left and right edge-folding mechanism includes side
Side paper folding knife, in the step S3, the side paper folding knife is by moving horizontally being turned down for paper material described in backfin
Side.
5. the preparation method of envelope type paper bag as claimed in claim 1, it is characterised in that：The folding bottom mechanism includes bottom
Jack knife and back cover lid jack knife are holded up, in the step S4, the bottom holds up jack knife by vertical motion by the paper material
Bottom turn down, the back cover lid jack knife is by horizontal movement by under the bottom backfin of the paper material.
6. a kind of manufacturing system of envelope type paper bag, it is characterised in that：Including rotating disk mechanism and outside the rotating disk mechanism
The gumming mechanism in week, vertical edge mechanism, left and right edge-folding mechanism, folding bottom mechanism, hold-down mechanism and go out bag mechanism, the gluing machine
Structure carries out gluing processing to the paper material in gluing station；The vertical edge mechanism is by the paper in the vertical edge station
The side for opening material is turned down；The left and right edge-folding mechanism is by under the side backfin of the paper material in left and right flanging station；
The folding bottom mechanism has turned down the bottom of the paper material in folding bottom station and under backfin；The hold-down mechanism will be located
Compressed in the paper material for compressing station, obtain required paper bag；It is described go out bag mechanism realize that the paper bag in output station goes out
Material；The rotating disk mechanism enabled by rotation the paper being transmitted thereon sequentially pass through the gluing station, vertical edge station,
Left and right flanging station, folding bottom station, compression station and output station.
7. the manufacturing system of envelope type paper bag as claimed in claim 6, it is characterised in that：Also include feeding mechanism, it is described enter
Material mechanism includes feed bin, suction nozzle, feeding rod and picks bar, the paper material in the suction feed bin, the feeding rod
Paper material on suction nozzle is delivered into pretreated locations, the bar of picking is by swinging the paper in the pretreated locations
Material pushes to the gluing station correspondence position.
8. the manufacturing system of envelope type paper bag as claimed in claim 6, it is characterised in that：Also include profiled sheeting, the paper
Material is in the state of the profiled sheeting is pressed on, respectively by the vertical edge mechanism, left and right edge-folding mechanism and folding bottom mechanism
Processing.
9. the manufacturing system of envelope type paper bag as claimed in claim 6, it is characterised in that：The vertical edge mechanism includes perpendicular paper
Knife, the angle of the perpendicular paper knife and the paper base portion of the paper material is acute angle, and then passes through the vertical fortune of the perpendicular paper knife
It is dynamic to turn down the side of the paper material；
The left and right edge-folding mechanism includes side paper folding knife, and the side paper folding knife is by moving horizontally paper material described in backfin
The side turned down.
10. the preparation method of envelope type paper bag as claimed in claim 1, it is characterised in that：The folding bottom mechanism includes bottom
Lid holds up jack knife and back cover lid jack knife, and the bottom holds up jack knife and turned down the bottom of the paper material by vertical motion
Rise, the back cover lid jack knife is by horizontal movement by under the bottom backfin of the paper material.
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| CN108312638A (en) * | 2018-03-13 | 2018-07-24 | 吉林大学 | A kind of rotary-type full-automatic is at file pouch back cover after cylinder and shrivels method and its device |
| CN108312638B (en) * | 2018-03-13 | 2023-09-22 | 吉林大学 | Rotary full-automatic barrel-forming file bag back cover and collapse method and device thereof |
| CN111497349A (en) * | 2020-04-21 | 2020-08-07 | 深圳市安耐节科技有限公司 | Thin material flanging machine and flanging method for thin material flanging machine |
| CN111873550A (en) * | 2020-08-14 | 2020-11-03 | 巫扬吉 | Paper recycling device |
| CN111873550B (en) * | 2020-08-14 | 2022-09-30 | 上海赛挺环保科技有限公司 | Paper recycling device |
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