CN209701929U - A kind of conveying of cast film machine paper tube and collating unit - Google Patents

A kind of conveying of cast film machine paper tube and collating unit Download PDF

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Publication number
CN209701929U
CN209701929U CN201822056796.9U CN201822056796U CN209701929U CN 209701929 U CN209701929 U CN 209701929U CN 201822056796 U CN201822056796 U CN 201822056796U CN 209701929 U CN209701929 U CN 209701929U
Authority
CN
China
Prior art keywords
paper tube
conveying
seat
push plate
cast film
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.)
Expired - Fee Related
Application number
CN201822056796.9U
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Chinese (zh)
Inventor
徐靖豐
敖卓卫
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.)
Changlongxing Science And Technology Shenzhen Co ltd
Original Assignee
Changlongxing Science And Technology Shenzhen 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.)
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Application filed by Changlongxing Science And Technology Shenzhen Co ltd filed Critical Changlongxing Science And Technology Shenzhen Co ltd
Priority to CN201822056796.9U priority Critical patent/CN209701929U/en
Application granted granted Critical
Publication of CN209701929U publication Critical patent/CN209701929U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model proposes a kind of cast film machine paper tube conveying with collating unit include structure for conveying, arrangement architecture and mounting structure;The structure for conveying will wear paper tube and be delivered to the arrangement architecture, and the arrangement architecture arranges the paper tube of wearing, and the paper tube of wearing after arrangement is mounted on air-expanding shaft by the mounting structure.The utility model by way of being arranged structure for conveying, arrangement architecture and mounting structure in the conveying of cast film machine paper tube and collating unit simultaneously, enable cast film machine paper tube conveying and collating unit arrange it is multiple wear paper tube while, the paper tube of wearing arranged is sleeved on air-expanding shaft, compared to existing tandem workflow, cast film machine paper tube conveying and collating unit are carried out alignment processes and installation process are synchronous, can be effectively shortened and arrangement and be installed the working time for wearing paper tube.

Description

A kind of conveying of cast film machine paper tube and collating unit
Technical field
The utility model relates to cast film machine technical fields, convey more particularly, to a kind of cast film machine paper tube and arrange dress It sets.
Background technique
Existing cast film machine is will to twine to cover after casting films film extrusion that finished product is made on wearing paper tube, wears paper tube due to length The casting films width spent and twine set differs, generally require to arrange it is multiple wear paper tube to reach the requirement for twining set casting films, and now Technical solution be mostly to arrange to wear to wear paper tube again after paper tube and be mounted on air-expanding shaft, process is cascaded structure, and time-consuming for process, It is difficult to shorten operation length, influences working efficiency.
Utility model content
In order to solve to wear, paper tube is arranged and installation process short time consumption is long, the low problem of working efficiency, the utility model It is proposed a kind of conveying of cast film machine paper tube and collating unit.
What the utility model was achieved through the following technical solutions:
A kind of conveying of cast film machine paper tube and collating unit, including structure for conveying, arrangement architecture and mounting structure;It is described defeated It send structure that will wear paper tube and is delivered to the arrangement architecture, the arrangement architecture arranges the paper tube of wearing, the installation knot Paper tube of wearing after arrangement is mounted on air-expanding shaft by structure.
Further, including carton, the structure for conveying is mounted on described carton one end, it is described wear paper tube be contained in it is described In carton;The carton includes carton bottom plate, and the carton bottom plate is obliquely installed relative to the structure for conveying, described to wear paper tube The structure for conveying is moved to along the carton bottom plate.
Further, the structure for conveying includes motor, driving chain, driving wheel, tensioning wheel, conveyer belt and the first photoelectricity Switch;The conveyer belt includes partition;The motor drives the driving wheel to be rotated by driving chain, the driving wheel Tensioning wheel rotation is driven by the transmission belt, described when wearing paper tube and being moved on the structure for conveying, the partition support Rise it is described wear paper tube, so that the paper tube of wearing is moved along the conveyer belt and is worn paper tube by described to be delivered to the arrangement architecture enterprising Row arrangement;First optoelectronic switch connects the motor, and first optoelectronic switch is for detecting the partition, and described first When optoelectronic switch detects the partition, first optoelectronic switch closes the motor.
Further, the structure for conveying includes tensioning adjusting rod and take-up housing bearing, and the tensioning wheel is mounted on described On take-up housing bearing, the tensioning adjusting rod adjusts the distance between tensioning wheel and the driving wheel.
Further, the structure for conveying is obliquely installed relative to horizontal line.
Further, the arrangement architecture includes base assembly and arrangement component, and the base assembly includes middle V bogie Seat, the arrangement component includes push plate and the second optoelectronic switch;It is described to wear paper tube the transfer V is delivered to by the structure for conveying It is arranged on type seat;Second optoelectronic switch connects the push plate, and the second optoelectronic switch wears paper tube for detecting, described to wear When paper tube is delivered on the middle V bogie seat by the structure for conveying, paper tube is worn described in the second optoelectronic switch detection and is remembered Paper tube transmission quantity is worn described in record, while being opened and being worn paper tube described in the push plate arrangement.
Further, the base assembly includes fixing bearing, V-type seat cylinder and linking arm, and the middle V bogie seat passes through The fixing bearing is mounted on the cast film machine paper tube conveying and collating unit;The middle V bogie seat is with the fixing axle It holds and pivots about;The V-type seat cylinder connects the middle V bogie seat side, the linking arm by the linking arm With the middle V bogie seat hinge, the V-type seat cylinder is by driving the linking arm to rotate the middle V bogie seat.
Further, the arrangement component includes push plate cylinder, push plate sliding rail and postive stop baffle;The push plate is sleeved on institute It states on push plate sliding rail, the push plate cylinder is connect with the push plate, and the push plate cylinder drives the push plate sliding along the push plate Rail is mobile;The postive stop baffle and the push plate are mounted on the middle V bogie seat both ends, wear paper described in the postive stop baffle limitation The maximum distance that pipe moves on the middle V bogie seat.
Further, the mounting structure includes casing seat, seat side baffle and third optoelectronic switch;The paper tube of wearing passes through Described sleeve pipe seat is mounted on air-expanding shaft;The seat side baffle is mounted on described sleeve pipe seat side, and the seat side baffle prevents institute It states and wears paper tube disengaging described sleeve pipe seat;The third optoelectronic switch wears paper tube on casing seat for detecting.
The utility model has the advantages that
The utility model by being arranged structure for conveying, arrangement architecture in the conveying of cast film machine paper tube and collating unit simultaneously With the mode of mounting structure, enable cast film machine paper tube conveying and collating unit arrange it is multiple wear paper tube while, The paper tube of wearing arranged is sleeved on air-expanding shaft, compared to existing tandem workflow, the cast film machine paper tube Conveying and collating unit are carried out alignment processes and installation process are synchronous, can be effectively shortened and arrangement and be installed and wear the work of paper tube Time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of structure for conveying in the utility model;
Fig. 2 is the structural schematic diagram of arrangement architecture in the utility model;
Fig. 3 is the magnified partial view of Fig. 1.
Specific embodiment
In order to it is clearer, completely illustrate the technical solution of the utility model, with reference to the accompanying drawing to the utility model It is described further.
Please refer to Fig. 1 to Fig. 3, a kind of cast film machine paper tube conveying and collating unit, including structure for conveying 1, arrangement architecture 2 With mounting structure 3;The structure for conveying 1 will wear paper tube 111 and be delivered to the arrangement architecture 2, and the arrangement architecture 2 is worn described Paper tube 111 is arranged, and the paper tube 111 of wearing after arrangement is mounted on air-expanding shaft by the mounting structure 3.
In the present embodiment, the cast film machine paper tube conveying is with collating unit by the way that structure for conveying 1, arrangement are arranged simultaneously The mode of structure 2 and mounting structure 3 enables cast film machine paper tube conveying and collating unit multiple to wear paper tube arranging While 111, the paper tube 111 of wearing arranged is sleeved on air-expanding shaft, it is described compared to existing tandem workflow The synchronous progress of alignment processes and installation process can be effectively shortened arrangement and installation by the conveying of cast film machine paper tube and collating unit Wear the working time of paper tube 111.
The cast film machine paper tube conveying and collating unit include carton 11, and the structure for conveying 1 is mounted on the carton 11 one end, the paper tube 111 of wearing are contained in the carton 11;The carton 11 includes carton bottom plate 110, the carton bottom plate 110 are obliquely installed relative to the structure for conveying 1, described to wear paper tube 111 and be moved to conveying knot along the carton bottom plate 110 Structure 1.
In the present embodiment, the cast film machine paper tube conveying wears paper for accommodating by setting carton 11 with collating unit Pipe 111, for that can be moved to structure for conveying 1 convenient for wearing paper tube 111, carton bottom plate 110 is inclined to set, and carton bottom plate 110 inclines Tilted direction is to be tilted to nearly 1 one end of structure for conveying far from 1 one end of structure for conveying, wear paper tube 111 be moved under the influence of gravity it is defeated It send at structure 1.When paper tube 111 is worn in the conveying of structure for conveying 1, residue wears paper tube 111 and is successively moved to the progress next group of structure for conveying 1 Secondary conveying.
The structure for conveying 1 includes motor 12, driving chain 120, driving wheel 13, tensioning wheel 14, conveyer belt 15 and first Optoelectronic switch 16;The conveyer belt 15 includes partition 15a;The motor 12 drives the driving wheel 13 by driving chain 120 It is rotated, the driving wheel 13 drives the tensioning wheel 14 to rotate by the conveyer belt 15, and the paper tube 111 of wearing is moved to When on the structure for conveying 1, the partition 15a hold up described in wear paper tube 111, make described to wear paper tube 111 along the conveyer belt 15 Move and by it is described wear paper tube 111 and be delivered on the arrangement architecture 2 arrange;First optoelectronic switch 16 connects described Motor 12, for first optoelectronic switch 16 for detecting the partition 15a, first optoelectronic switch 16 detects the partition When 15a, first optoelectronic switch 16 closes the motor 12.
In the present embodiment, the partition 15a on conveyer belt 15 is inclined relative to horizontal setting, and partition 15a is relative to water The tilt angle of plane can guarantee that wearing paper tube 111 can steadily be on structure for conveying 1.
In the present embodiment, movement relation is motor 12 by the drive driving wheel 13 of driving chain 120, and then drives tensioning wheel 14 rotations.The direction of rotation of driving wheel 13 is clockwise, certainly, to be also not excluded in other installation relations, driving wheel 13 is in Counterclockwise paper tube 111 is worn in conveying.When driving wheel 13 rotates, band dynamic dividing plate 15a is mobile to arrangement architecture 2, and then will wear paper Pipe 111 is delivered to arrangement architecture 2 and is arranged.
In the present embodiment, the first optoelectronic switch 16 is for detecting partition 15a, in 15 moving process of conveyer belt, when carton 11 Inside wear paper tube 111 be in arrangement in or conveyer belt 15 on when, lower side partition 15a will be at carton bottom plate 110, light When electric switch detects partition 15a, i.e. stopping motor 12 is run, so that structure for conveying 1 be made to stop conveying, it is ensured that workflow Duration.User puts into carton 11 wear paper tube 111 after, wear paper tube 111 and be moved on partition 15a, the first optoelectronic switch 16 Access is formed, structure for conveying 1 brings into operation.
The structure for conveying 1 includes tensioning adjusting rod 14a and take-up housing bearing 14b, and the tensioning wheel 14 is mounted on described On take-up housing bearing 14b, the tensioning adjusting rod 14a adjusts the distance between tensioning wheel 14 and the driving wheel 13.
In the present embodiment, the length of the conveyer belt 15 is regular length, and user is by tensioning adjusting rod 14a to adjust Take-up housing bearing 14b, and then adjust the distance between tensioning wheel 14 and driving wheel 13.Tensioning wheel 14 is remoter apart from driving wheel 13, Conveyer belt 15 is tighter, and compact conveyer belt 15 may insure that conveyer belt 15 can work normally, prevent because conveyer belt 15 it is loose caused by Conveyer belt 15 is bent, and wears the problem of paper tube 111 falls off.When user needs to adjust, repairs or replace conveyer belt 15, can pass through Rotation tensioning adjusting rod 14a, shortens the distance between tensioning wheel 14 and driving wheel 13 to loosen conveyer belt 15 and facilitates user Structure for conveying 1 is repaired and adjusted.
The structure for conveying 1 is obliquely installed relative to horizontal line.
In the present embodiment, the structure for conveying 1 is mounted on 110 inclined direction side of carton bottom plate, and structure for conveying 1 is in incline It is ramp-like, it is therefore an objective to allow to wear between angle of the paper tube 111 steadily in structure for conveying 1 and partition 15a formation, make to convey Cheng Wending prevents from wearing the disengaging of paper tube 111.
The arrangement architecture 2 includes base assembly 21 and arrangement component 22, and the base assembly 21 includes middle V bogie seat 210, the arrangement component 22 includes push plate 220 and the second optoelectronic switch 23;It is described that wear paper tube 111 defeated by the structure for conveying 1 It send to being arranged on the middle V bogie seat 210;The push plate 220 push it is described wear paper tube 111, make described to wear 111 row of paper tube It is listed on the middle V bogie seat 210;Second optoelectronic switch 23 connects the push plate 220, and the second optoelectronic switch 23 is for examining Paper tube 111 is worn in survey, described when wearing paper tube 111 and being delivered on the middle V bogie seat 210 by the structure for conveying 1, second light Electric switch 23 detects described wear and wears 111 transmission quantity of paper tube described in paper tube 111 and record, while the push plate 220 being made to push row Paper tube 111 is worn described in column.
In the present embodiment, the base assembly 21 in the arrangement component 22 mainly support to accepting transfer platform and secondary defeated The effect sent, wears paper tube 111 and is transmitted on middle V bogie seat 210 by conveying assembly and arranged, and on middle V bogie seat 210, pushes away The promotion of plate 220 wears paper tube 111 and moves and arrange along middle V bogie seat 210, so that multiple paper tubes 111 of wearing are in juxtaposition.When more A to wear after paper tube 111 arranges, the paper tube 111 of wearing after arrangement is moved on mounting structure 3 and is installed by middle V bogie seat 210.
Second optoelectronic switch 23 detection paper tube purpose be control arrangement wear 111 quantity of paper tube and as push plate 220 Control switch is detected after 111 quantity of paper tube is worn in user's setting arrangement by the second optoelectronic switch 23, is transmitted when wearing paper tube 111 To after on middle V bogie seat 210, the second optoelectronic switch 23 is detected when wearing paper tube 111, wears the reciprocating motion of push plate 220 to arrange Paper tube 111.After wearing paper tube 111 of quantity is set when the second optoelectronic switch 23 detects, makes middle V bogie seat 210 that will wear paper tube 111 Mounting structure 3 is delivered to be installed.
The base assembly 21 includes fixing bearing 210a, V-type seat cylinder 211 and linking arm 211a, the middle V bogie seat 210 are mounted in the conveying of cast film machine paper tube and collating unit by the fixing bearing 210a;The middle V bogie seat 210 with The fixing bearing 210a is pivoted about;The V-type seat cylinder 211 passes through the linking arm 211a connection transfer 210 side of V-type seat, the linking arm 211a and middle 210 hinge of V bogie seat, the V-type seat cylinder 211 is by driving institute Stating linking arm 211a rotates the middle V bogie seat 210.
In the present embodiment, the paper tube 111 of wearing after arrangement is delivered to by middle V bogie seat 210 by rotation by arrangement architecture 2 On mounting structure 3.Middle V bogie seat 210 is mounted on ectosome machine plate by fixing bearing 210a, and middle V bogie seat 210 passes through fixation Bearing 210a is rotated, to play the role of second-pumping.V-type seat cylinder 211 passes through V bogie seat in linking arm 211a hinge 210 one end, V-type seat cylinder 211 drive linking arm 211a to make the middle V bogie seat 210 rotate.
In the present embodiment, the V-structure of middle V bogie seat 210 is supported by two-arm, and it is different that carrying can be effectively fixed Diameter wears paper tube 111, and the cast film machine paper tube conveying is enable to wear paper tube 111 suitable for different-diameter with collating unit Arrangement and installation, expand the use scope of the utility model.
The arrangement component 22 includes push plate cylinder 221, push plate sliding rail 222 and postive stop baffle 223;220 sets of the push plate On the push plate sliding rail 222, the push plate cylinder 221 is connect with the push plate 220, and the push plate cylinder 221 drives institute Push plate 220 is stated to move along the push plate sliding rail 222;The postive stop baffle 223 and the push plate 220 are mounted on the middle V bogie 210 both ends of seat, the postive stop baffle 223, which limits, described wears the maximum distance that paper tube 111 moves on the middle V bogie seat 210.
In the present embodiment, push plate cylinder 221 is connected in push plate 220, and push plate 220 is set on push plate sliding rail 222 and edge Push plate sliding rail 222 is mobile.Push plate sliding rail 222 and middle V bogie seat 210 are in parallel relation, it is ensured that push plate 220 wears paper tube in arrangement Promotion can be stablized when 111 and wear paper tube 111 to arrange paper tube 111 is worn.Transfer is detached from simultaneously to prevent from wearing paper tube 111 V-type seat 210 damages in alignment processes, opposite 220 one end of push plate of the middle V bogie seat 210 be provided with postive stop baffle 223 with The maximum displacement length of paper tube 111 is worn in limitation.
The mounting structure 3 includes casing seat 31, seat side baffle 32 and third optoelectronic switch 33;The paper tube 111 of wearing leads to Described sleeve pipe seat 31 is crossed to be mounted on air-expanding shaft;The seat side baffle 32 is mounted on 31 side of described sleeve pipe seat, the seat side block Plate 32 prevents the paper tube 111 of wearing to be detached from described sleeve pipe seat 31;The third optoelectronic switch 33 is for detecting on casing seat 31 Wear paper tube 111.
In the present embodiment, the paper tube 111 of wearing after arrangement is delivered to casing seat 31 by middle V bogie seat 210 and is installed, and wears Paper tube 111 is mounted on air-expanding shaft, to further twine set casting films.
To prevent from wearing paper tube 111 when middle V bogie seat 210 is sent to casing seat 31, wears paper tube 111 and be detached from or lose, originally Utility model is provided with a side baffle 32 at 31 edge of casing seat, prevents from wearing paper tube 111 being detached from casing seat 31 during transportation.
Third optoelectronic switch 33 in the utility model is connect with V-type seat cylinder 211, and third optoelectronic switch 33 detects set When not wearing paper tube 111 on tube socket 31, that is, V-type seat cylinder 211 is opened, the rotation of V-type seat cylinder 211 is made to make to wear paper tube 111 in V bogie seat 210 is delivered on casing seat 31.
Certainly, the utility model can also have other numerous embodiments, be based on present embodiment, the ordinary skill of this field Personnel's obtained other embodiments under the premise of not making any creative work, belong to the utility model and are protected Range.

Claims (9)

1. a kind of cast film machine paper tube conveying and collating unit, which is characterized in that including structure for conveying, arrangement architecture and installation knot Structure;The structure for conveying will wear paper tube and be delivered to the arrangement architecture, and the arrangement architecture arranges the paper tube of wearing, institute It states mounting structure the paper tube of wearing after arrangement is mounted on air-expanding shaft.
2. cast film machine paper tube conveying according to claim 1 and collating unit, which is characterized in that described including carton Structure for conveying is mounted on described carton one end, and the paper tube of wearing is contained in the carton;
The carton includes carton bottom plate, and the carton bottom plate is obliquely installed relative to the structure for conveying, described to wear paper tube edge The carton bottom plate is moved to the structure for conveying.
3. cast film machine paper tube conveying according to claim 1 and collating unit, which is characterized in that the structure for conveying packet Include motor, driving chain, driving wheel, tensioning wheel, conveyer belt and the first optoelectronic switch;The conveyer belt includes partition;
The motor drives the driving wheel to be rotated by driving chain, and the driving wheel drives institute by the conveyer belt State tensioning wheel rotation, it is described when wearing paper tube and being moved on the structure for conveying, the partition hold up described in wear paper tube, make described wear Paper tube moved along the conveyer belt and by it is described wear paper tube and be delivered on the arrangement architecture arrange;
First optoelectronic switch connects the motor, and first optoelectronic switch is for detecting the partition, first light When electric switch detects the partition, first optoelectronic switch closes the motor.
4. cast film machine paper tube conveying according to claim 3 and collating unit, which is characterized in that the structure for conveying packet It includes tensioning adjusting rod and take-up housing bearing, the tensioning wheel is mounted on the take-up housing bearing, the tensioning adjusting rod is adjusted The distance between tensioning wheel and the driving wheel.
5. cast film machine paper tube conveying according to claim 1 and collating unit, which is characterized in that the structure for conveying phase Horizontal line is obliquely installed.
6. cast film machine paper tube conveying according to claim 1 and collating unit, which is characterized in that the arrangement architecture packet Base assembly and arrangement component are included, the base assembly includes middle V bogie seat, and the arrangement component includes push plate and the second photoelectricity Switch;
It is described wear paper tube and be delivered on the middle V bogie seat by the structure for conveying arranged;
The push plate wears paper tube described in pushing, and makes described to wear paper tube and be arranged on the middle V bogie seat;
Second optoelectronic switch connects the push plate, and the second optoelectronic switch wears paper tube for detecting, and the paper tube of wearing is by described When structure for conveying is delivered on the middle V bogie seat, is worn described in the second optoelectronic switch detection described in paper tube and record and wear paper Pipe transmission quantity, while opening and wearing paper tube described in the push plate arrangement.
7. cast film machine paper tube conveying according to claim 6 and collating unit, which is characterized in that the base assembly packet Fixing bearing, V-type seat cylinder and linking arm are included, the middle V bogie seat is mounted on the cast film machine by the fixing bearing In paper tube conveying and collating unit;The middle V bogie seat is pivoted about with the fixing bearing;
The V-type seat cylinder connects the middle V bogie seat side, the linking arm and the middle V bogie by the linking arm Seat hinge, the V-type seat cylinder is by driving the linking arm to rotate the middle V bogie seat.
8. cast film machine paper tube conveying according to claim 6 and collating unit, which is characterized in that the arrangement component packet Include push plate cylinder, push plate sliding rail and postive stop baffle;
The push plate is sleeved on the push plate sliding rail, and the push plate cylinder is connect with the push plate, and the push plate cylinder drives The push plate is moved along the push plate sliding rail;The postive stop baffle and the push plate are mounted on the middle V bogie seat both ends, described The maximum distance that paper tube moves on the middle V bogie seat is worn described in postive stop baffle limitation.
9. cast film machine paper tube conveying according to claim 1 and collating unit, which is characterized in that the mounting structure packet Include casing seat, seat side baffle and third optoelectronic switch;
The paper tube of wearing is mounted on air-expanding shaft by described sleeve pipe seat;
The seat side baffle is mounted on described sleeve pipe seat side, and the seat side baffle prevents the paper tube of wearing to be detached from described sleeve pipe Seat;
The third optoelectronic switch wears paper tube on casing seat for detecting.
CN201822056796.9U 2018-12-07 2018-12-07 A kind of conveying of cast film machine paper tube and collating unit Expired - Fee Related CN209701929U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822056796.9U CN209701929U (en) 2018-12-07 2018-12-07 A kind of conveying of cast film machine paper tube and collating unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822056796.9U CN209701929U (en) 2018-12-07 2018-12-07 A kind of conveying of cast film machine paper tube and collating unit

Publications (1)

Publication Number Publication Date
CN209701929U true CN209701929U (en) 2019-11-29

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ID=68637335

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822056796.9U Expired - Fee Related CN209701929U (en) 2018-12-07 2018-12-07 A kind of conveying of cast film machine paper tube and collating unit

Country Status (1)

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CN (1) CN209701929U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113968449A (en) * 2021-11-12 2022-01-25 杭州慧知连科技有限公司 Automatic paper tube feeding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113968449A (en) * 2021-11-12 2022-01-25 杭州慧知连科技有限公司 Automatic paper tube feeding device

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20191129

Termination date: 20211207

CF01 Termination of patent right due to non-payment of annual fee