CN107243945A - The carving knife of cutting machine on a kind of flexographic printing books for taking notes or keeping accounts production line - Google Patents
The carving knife of cutting machine on a kind of flexographic printing books for taking notes or keeping accounts production line Download PDFInfo
- Publication number
- CN107243945A CN107243945A CN201710610336.3A CN201710610336A CN107243945A CN 107243945 A CN107243945 A CN 107243945A CN 201710610336 A CN201710610336 A CN 201710610336A CN 107243945 A CN107243945 A CN 107243945A
- Authority
- CN
- China
- Prior art keywords
- cutting machine
- knife
- cutter body
- pair
- cutter
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2614—Means for mounting the cutting member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
- B26D7/088—Means for treating work or cutting member to facilitate cutting by cleaning or lubricating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1845—Means for removing cut-out material or waste by non mechanical means
- B26D7/1854—Means for removing cut-out material or waste by non mechanical means by air under pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2628—Means for adjusting the position of the cutting member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The carving knife of cutting machine on a kind of flexographic printing books for taking notes or keeping accounts production line, belongs to book, volume cutting device technical field.Including cutter body, the cutter body is fixed on the slide bar of cutting machine by fixture, the middle part of described cutter body two sides has a step respectively, cutter body is divided into cutter and bottom knife by the step, described cutter is spaced apart a pair of fixing holes provided with full thickness direction, feature in the longitudinal direction：Described cutter is in sidepiece and offers an air admission hole along its length, described bottom knife offers a groove in the centre of the lower surface edge of a knife, length direction of the groove along bottom knife, which extends and constituted on its both sides, a pair of blades, it is spaced apart in the bottom of the groove and along its length and is provided with one group of stomata, one group of stomata is upwardly extended and connected with described air admission hole respectively.Few with process, simple to operate, efficiency high, labor cost is low, and it is good that books for taking notes or keeping accounts cut flatness, the characteristics of quality is guaranteed.
Description
Technical field
The invention belongs to book, volume production line cutting device technical field, and in particular to a kind of flexographic printing books for taking notes or keeping accounts production
The carving knife of cutting machine on line.
Background technology
On flexographic printing books for taking notes or keeping accounts production line, particularly uniform cutting size is needed in printing notebook and exercise book etc.
During product, it is required for using cutting machine and end to end books for taking notes or keeping accounts is cut so that the length of the books for taking notes or keeping accounts of slitting is identical simultaneously
And edge keeps smooth.But in practical operation, often can not be once perfect because the adjustment of carving knife is no so accurate
The line of demarcation between different books for taking notes or keeping accounts front covers is cut on ground, and the lower edges for generally requiring to have more books for taking notes or keeping accounts cut again and could obtained
To qualified product.There is process many, operation is loaded down with trivial details, and efficiency is low, the drawbacks of labor cost is high.
As shown in figure 3, being carving knife used on existing cutting machine, its edge of a knife uses single dege blade structure, the carving knife
It is installed on the knife rest of cutting machine, and the cutting operation between different books for taking notes or keeping accounts is realized by regulation, control cutting spacing.But
Need accurately to adjust very much knife rest using the cutter of this structure, the boundary line perfection between books for taking notes or keeping accounts could be cut.
In prior art, one kind " carving knife " that such as Chinese invention patent application publication No. CN105922320A is provided, its
Annular cutter hub is used, the annular cutter hub realizes the adjustment to cutting size by the regulation at Telescopic-cylinder end.But
Also have the following disadvantages in actual use：First, still there is cutting error in cutting in annular cutter hub；Secondly, ring is worked as
When shape cutter hub breaks down, it has not been convenient to safeguard the replacing with single cutter hub, cause use cost to increase.
In view of the foregoing, it is necessary to design one kind be not only convenient for dismounting and also installation accuracy require it is low, can quickly just
Really cut the carving knife of cutting machine on the flexographic printing books for taking notes or keeping accounts production line in line of demarcation between books for taking notes or keeping accounts.Therefore, the applicant makees
Actively and effectively explore, form technical scheme described below finally.
The content of the invention
The task of the present invention is to provide for a kind of carving knife of cutting machine on flexographic printing books for taking notes or keeping accounts production line, contributes to excellent
Change knife edge structure and use the installation accuracy requirement of reduction cutting machine, and quickly correctly the line of demarcation between books for taking notes or keeping accounts can be entered
The step of row perfection is cut and eliminates secondary cutting edge, advantageously reduces the difficulty of cutter changing and cutting machine maintenance.
What the task of the present invention was performed by, the carving knife of cutting machine on a kind of flexographic printing books for taking notes or keeping accounts production line,
Including cutter body, the cutter body is fixed on the slide bar of cutting machine by fixture, in described cutter body two sides
Portion has a step respectively, and cutter body is divided into cutter and bottom knife by the step, and described cutter is in length direction
It is upper to be spaced apart a pair of fixing holes provided with full thickness direction, it is characterised in that described cutter is in sidepiece and along length
Direction offers an air admission hole, and described bottom knife offers a groove in the centre of the lower surface edge of a knife, and the groove is along bottom knife
Length direction extension and its both sides constitute have a pair of blades, be spaced apart in the bottom of the groove and along its length
Provided with one group of stomata, one group of stomata is upwardly extended and connected with described air admission hole respectively.
In the specific embodiment of the present invention, described fixture is slidably arranged on the slide bar of cutting machine, should
Fixture includes sliding block, fastener and connecting plate, and described sliding block is made up of fastener connecting plate, briquetting and fixed plate, wherein institute
The fastener connecting plate lower end stated offers upper junction plate fixing hole, and described fastener is by adjusting rod, a pair of fastening blocks and one
Regulating bolt is constituted, a pair of fastening blocks are slidably arranged in the two ends of adjusting rod length direction respectively, described fastening block
Upper end offers lower connecting plate fixing hole, and the fastening block is in a state of use towards solid with one on the side side of cutter body
Offered on fixed pole, described connecting plate one group it is corresponding with upper junction plate fixing hole and lower connecting plate fixing hole position respectively
Through hole, one group of screw with upper junction plate fixing hole, lower connecting plate fixing hole through fixing after corresponding through hole respectively, so that real
Fix bar on the mating connection of existing sliding block and fastener, a pair of fastening blocks be respectively protruding into a pair of fixing holes and by cutter body
Positioning, a pair of regulating bolts are screwed in the two ends end of adjusting rod length direction, and cutter body is pressed from both sides by screwing regulating bolt
Hold between fastener and fixed plate, now described briquetting is resisted against on the upper surface of cutter body.
In another specific embodiment of the present invention, a regulation handle is additionally provided with the sliding block of the fixture, should
One end of regulation handle extends to slide bar side and is vertically resisted against on slide bar, when described regulation handle is unscrewed, the folder
Tool is free to slide on slide bar, and when described regulation handle is screwed, described fixture is then fixed on slide bar, so that
Realize position adjustments of the fixture on slide bar.
In another specific embodiment of the present invention, the shape of cross section of described groove is V-shaped.
In another specific embodiment of the present invention, the end of described air admission hole is screwed hole.
The present invention has the advantage that using after said structure：Firstly, since the centre of the edge of a knife of carving knife lower end is
Groove, both sides are constituted a two panels blade, and offer multiple stomatas on the length direction of the groove between two panels blade, many
Individual stomata is respectively communicated with air admission hole again, and air admission hole is connected further through tracheae with external compression gas source, insert structure energy
The surplus in enough disposable lines of demarcation and line of demarcation both sides for cutting off cutting thing simultaneously, not only efficiently avoid to cutting thing side
The secondary operation on edge, improves operating efficiency, and reduce the installation accuracy requirement of cutting machine, so that books for taking notes or keeping accounts are manufactured into
This and processing cost are reduced accordingly, while the compressed gas source in tracheae sprays by air admission hole from stomata, will
The waste material in edge of a knife groove is embedded in the course of work to clean out in the lump；Secondly, the tune that cutter is engaged with fixture is employed
Nodule structure, can effectively reduce the difficulty of cutter changing and cutting machine maintenance.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of carving knife of the present invention.
Fig. 2 is the stereochemical structure sketch that carving knife of the present invention is installed on cutting machine.
Fig. 3 is the dimensional structure diagram of carving knife in the prior art.
In figure：1. cutter body, 11. steps, 12. cutters, 121. fixing holes, 122. air admission holes, 13. bottom knife,
131. groove, 132. blades, 133. stomatas；2. fixture, 21. sliding blocks, 211. fastener connecting plates, 2111. upper junction plates are fixed
Hole, 212. briquettings, 213. fixed plates, 22. fasteners, 221. fastening blocks, 2211. fix bars, 2212. lower connecting plate fixing holes,
222. adjusting rods, 223. regulating bolts, 23. connecting plates, 231. through holes, 232. screws, 24. regulation handles；3. slide bar；4. gas
Pipe.
Embodiment
Applicant will elaborate by way of examples below, but the description to embodiment is not to this hair
The limitation of bright technical scheme, any only formal rather than substantial equivalent transformation according to made by present inventive concept
It is regarded as technical scheme category.
In the following description it is every be related to upper and lower, left and right, the directionality of front and rear or directionality concept be all
On the basis of the position shown in Fig. 2, thus being particularly limited to the technical scheme of the invention provided can not be understood as.
Refer to Fig. 1 and combine Fig. 2, the present invention relates to a kind of cutting of cutting machine on flexographic printing books for taking notes or keeping accounts production line
Knife, including cutter body 1, the cutter body 1 are fixed on the slide bar 3 of cutting machine by fixture 2,1 liang of described cutter body
The middle part of side has a step 11 respectively, and cutter body 1 is divided into cutter 12 and bottom knife 13 by the step 11, described
Cutter 12 is spaced apart a pair of fixing holes 121 provided with full thickness direction in the longitudinal direction, and described cutter 12 is in side
Portion and an air admission hole 122 is offered along its length, it is recessed that described bottom knife 13 offers one in the centre of the lower surface edge of a knife
Groove 131, length direction of the groove 131 along bottom knife 13, which extends and constituted on its both sides, a pair of blades 132, described recessed
The bottom of groove 131 and be spaced apart along its length provided with one group of stomata 133, one group of stomata 133 upwardly extend respectively and with
Described air admission hole 122 is connected.For convenience with the connection of tracheae 4, the end of described air admission hole 122 uses screwed hole.
Further, described fixture 2 is slidably arranged on the slide bar 3 of cutting machine, and the fixture 2 includes sliding block 21, tight
Firmware 22 and connecting plate 23, described sliding block 21 are made up of fastener connecting plate 211, briquetting 212 and fixed plate 213, wherein institute
The lower end of fastener connecting plate 211 stated offers upper junction plate fixing hole 2111, and described fastener 22 is by adjusting rod 222, one
Fastening block 221 and a pair of regulating bolts 223 are constituted, a pair of fastening blocks 221 are slidably arranged in the length side of adjusting rod 222 respectively
To two ends, the upper end of described fastening block 221 offers lower connecting plate fixing hole 2212, and the fastening block 221 is in use state
There is a fix bar 2211 on the lower side side towards cutter body 1, offer on described connecting plate 23 one group respectively with
The through hole 231 corresponding with the position of lower connecting plate fixing hole 2212 of upper junction plate fixing hole 2111, one group of screw 232 through pair
Fixed respectively with upper junction plate fixing hole 2111, lower connecting plate fixing hole 2212 after the through hole 231 answered, thus realize sliding block 21 with
Fix bar 2211 on the mating connection of fastener 22, a pair of fastening blocks 221 is respectively protruding into a pair of fixing holes 121 and by cutter
Body 1 is positioned, and a pair of regulating bolts 223 are screwed in the two ends end of the length direction of adjusting rod 222, by screwing regulating bolt
223 make cutter body 1 be clamped between fastener 22 and fixed plate 213, and now described briquetting 212 is resisted against cutter body 1
Upper surface on.
Further, be additionally provided with a regulation handle 24 on the sliding block 21 of the fixture 2, one end of the regulation handle 24 to
The side of slide bar 3 extends and is vertically resisted against on slide bar 3, and when described regulation handle 24 is unscrewed, the fixture 2 is free to
Slided on slide bar 3, when described regulation handle 24 is screwed, described fixture 2 is then fixed on slide bar 3, so as to realize folder
Have 2 position adjustments on slide bar 3.
Further, the shape of cross section of described groove 131 is unrestricted, is preferably V-shaped in the present embodiment.
Please continue to refer to Fig. 1 and Fig. 2 is combined, described cutter body 1 is clamped on fixture 2, and by described
Fastener 22 adjusts described fixture 2 behind appropriate position, then connects on air admission hole 122 described tracheae 4, the tracheae
4 connect with outside compressed gas source, and during work, gas source sprays by air admission hole 122 from stomata 133, by cutter body 1
The waste material being operationally embedded in groove 131 is cleaned out, and the two panels blade 132 of described cutter body 1 is respectively aligned to
The both sides in cutting thing line of demarcation are cut, and two panels blade 132 is disposably same by the surplus on line of demarcation and line of demarcation both sides respectively
When cut down, so as to avoid the secondary operation at cutting thing edge.It is few with process, simple to operate, efficiency high, labour into
This is low, and it is good that books for taking notes or keeping accounts cut flatness, the characteristics of quality is guaranteed.
Claims (5)
1. the carving knife of cutting machine on a kind of flexographic printing books for taking notes or keeping accounts production line, including cutter body (1), the cutter body (1)
It is fixed on by fixture (2) on the slide bar of cutting machine (3), the middle part of described cutter body (1) two sides has one respectively
Cutter body (1) is divided into cutter (12) and bottom knife (13) by rank (11), the step (11), and described cutter (12) exists
A pair of fixing holes (121) provided with full thickness direction are spaced apart on length direction, it is characterised in that described cutter (12)
An air admission hole (122) is offered in sidepiece and along its length, described bottom knife (13) is opened in the centre of the lower surface edge of a knife
Provided with a groove (131), length direction of the groove (131) along bottom knife (13), which extends and constituted on its both sides, a pair of knives
Sword (132), is spaced apart in the bottom of the groove (131) and along its length and is provided with one group of stomata (133), one group of stomata
(133) upwardly extend and connected with described air admission hole (122) respectively.
2. the carving knife of cutting machine on a kind of flexographic printing books for taking notes or keeping accounts production line according to claim 1, it is characterised in that
Described fixture (2) is slidably arranged on the slide bar of cutting machine (3), the fixture (2) include sliding block (21), fastener (22) and
Connecting plate (23), described sliding block (21) is made up of fastener connecting plate (211), briquetting (212) and fixed plate (213), wherein
Described fastener connecting plate (211) lower end offers upper junction plate fixing hole (2111), and described fastener (22) is by adjusting
Bar (222), a pair of fastening blocks (221) and a pair of regulating bolts (223) are constituted, and a pair of fastening blocks (221) are slidably set respectively
At the two ends of adjusting rod (222) length direction, the upper end of described fastening block (221) offers lower connecting plate fixing hole
(2212), the fastening block (221) is in a state of use towards having a fix bar on the side side of cutter body (1)
(2211), offered on described connecting plate (23) one group respectively with upper junction plate fixing hole (2111) and lower connecting plate fixing hole
(2212) the corresponding through hole in position (231), one group of screw (232) through after corresponding through hole (231) respectively with upper connection
Plate fixing hole (2111), lower connecting plate fixing hole (2212) are fixed, so as to realize that the cooperation of sliding block (21) and fastener (22) connects
Connect, the fix bar (2211) on a pair of fastening blocks (221) is respectively protruding into a pair of fixing holes (121) and determines cutter body (1)
Position, a pair of regulating bolts (223) are screwed in the two ends end of adjusting rod (222) length direction, by screwing regulating bolt (223)
Cutter body (1) is set to be clamped between fastener (22) and fixed plate (213), now described briquetting (212) is resisted against cutter
On the upper surface of body (1).
3. the carving knife of cutting machine on a kind of flexographic printing books for taking notes or keeping accounts production line according to claim 1, it is characterised in that
A regulation handle (24) is additionally provided with the sliding block (21) of the fixture (2), one end of the regulation handle (24) is to slide bar (3) one
Side extends and is vertically resisted against on slide bar (3), and when described regulation handle (24) is unscrewed, the fixture (2) is free to
Slided on slide bar (3), when described regulation handle (24) is screwed, described fixture (2) is then fixed on slide bar (3), from
And realize position adjustments of the fixture (2) on slide bar (3).
4. the carving knife of cutting machine on a kind of flexographic printing books for taking notes or keeping accounts production line according to claim 1, it is characterised in that
The shape of cross section of described groove (131) is V-shaped.
5. the carving knife of cutting machine on a kind of flexographic printing books for taking notes or keeping accounts production line according to claim 1, it is characterised in that
The end of described air admission hole (122) is screwed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710610336.3A CN107243945B (en) | 2017-07-25 | 2017-07-25 | Splitting knife for splitting machine on flexible printing book production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710610336.3A CN107243945B (en) | 2017-07-25 | 2017-07-25 | Splitting knife for splitting machine on flexible printing book production line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107243945A true CN107243945A (en) | 2017-10-13 |
| CN107243945B CN107243945B (en) | 2023-04-25 |
Family
ID=60012965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710610336.3A Active CN107243945B (en) | 2017-07-25 | 2017-07-25 | Splitting knife for splitting machine on flexible printing book production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107243945B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109335757A (en) * | 2018-11-28 | 2019-02-15 | 江苏长江纸业有限公司 | A kind of suture cutting linkage |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1495039A (en) * | 2002-09-12 | 2004-05-12 | ̩ | Printer and commodity information processor |
| CN202873780U (en) * | 2012-10-19 | 2013-04-17 | 龙岩烟草工业有限责任公司 | Automatic cleaning device of filter stick accelerator in filter stick forming machine |
| CN103158374A (en) * | 2013-04-03 | 2013-06-19 | 颜炳辉 | Automatic paper cutting device for multi-piece chain paper bill printer |
| CN104210883A (en) * | 2013-06-04 | 2014-12-17 | 苏州市狮威电子有限公司 | Film slitting device |
| CN205466394U (en) * | 2016-01-06 | 2016-08-17 | 安徽集友新材料股份有限公司 | Gas movable cutter mechanism for segmentation |
| CN105922320A (en) * | 2016-06-08 | 2016-09-07 | 铜陵方正塑业科技有限公司 | Slitting knife |
| CN105946014A (en) * | 2016-06-30 | 2016-09-21 | 苏州元子智能科技有限公司 | Automatic material cutting machine |
| CN206925958U (en) * | 2017-07-25 | 2018-01-26 | 江苏长江纸业有限公司 | The carving knife of cutting machine on a kind of flexographic printing books for taking notes or keeping accounts production line |
-
2017
- 2017-07-25 CN CN201710610336.3A patent/CN107243945B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1495039A (en) * | 2002-09-12 | 2004-05-12 | ̩ | Printer and commodity information processor |
| CN202873780U (en) * | 2012-10-19 | 2013-04-17 | 龙岩烟草工业有限责任公司 | Automatic cleaning device of filter stick accelerator in filter stick forming machine |
| CN103158374A (en) * | 2013-04-03 | 2013-06-19 | 颜炳辉 | Automatic paper cutting device for multi-piece chain paper bill printer |
| CN104210883A (en) * | 2013-06-04 | 2014-12-17 | 苏州市狮威电子有限公司 | Film slitting device |
| CN205466394U (en) * | 2016-01-06 | 2016-08-17 | 安徽集友新材料股份有限公司 | Gas movable cutter mechanism for segmentation |
| CN105922320A (en) * | 2016-06-08 | 2016-09-07 | 铜陵方正塑业科技有限公司 | Slitting knife |
| CN105946014A (en) * | 2016-06-30 | 2016-09-21 | 苏州元子智能科技有限公司 | Automatic material cutting machine |
| CN206925958U (en) * | 2017-07-25 | 2018-01-26 | 江苏长江纸业有限公司 | The carving knife of cutting machine on a kind of flexographic printing books for taking notes or keeping accounts production line |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109335757A (en) * | 2018-11-28 | 2019-02-15 | 江苏长江纸业有限公司 | A kind of suture cutting linkage |
| CN109335757B (en) * | 2018-11-28 | 2023-08-18 | 江苏长江纸业有限公司 | Linking device is cut to suture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107243945B (en) | 2023-04-25 |
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