CN109483631A - Convenient for the paper cutter of dedusting - Google Patents

Convenient for the paper cutter of dedusting Download PDF

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Publication number
CN109483631A
CN109483631A CN201811236987.1A CN201811236987A CN109483631A CN 109483631 A CN109483631 A CN 109483631A CN 201811236987 A CN201811236987 A CN 201811236987A CN 109483631 A CN109483631 A CN 109483631A
Authority
CN
China
Prior art keywords
workbench
cutterhead
paper
picking
container
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
Application number
CN201811236987.1A
Other languages
Chinese (zh)
Other versions
CN109483631B (en
Inventor
刘文普
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.)
Beijing Qingquan Xinguang Printing Co Ltd
Original Assignee
Beijing Qingquan Xinguang Printing 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.)
Filing date
Publication date
Application filed by Beijing Qingquan Xinguang Printing Co Ltd filed Critical Beijing Qingquan Xinguang Printing Co Ltd
Priority to CN201811236987.1A priority Critical patent/CN109483631B/en
Publication of CN109483631A publication Critical patent/CN109483631A/en
Application granted granted Critical
Publication of CN109483631B publication Critical patent/CN109483631B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18Means for removing cut-out material or waste
    • B26D7/1845Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863Means for removing cut-out material or waste by non mechanical means by suction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20Cutting beds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20Cutting beds
    • B26D2007/208Cutting beds having a cleaning device

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)

Abstract

The present invention relates to a kind of paper cutters convenient for dedusting, it is related to the technical field of paper cutting, including workbench, knife rest and the cutterhead for sliding with knife rest connection vertically, the bottom end of the cutterhead is removably connected with cutter, the top of the workbench corresponds to cutter and offers cut paper slot, suction inlet is offered on the cutterhead, is connected with suction nozzle on the cutterhead suction inlet, and the suction nozzle is towards cutter;It is hollow structure in the cutterhead, picking-up container is provided in the workbench, the top of the cutterhead is connected to by hose with picking-up container, is connected with blower in the picking-up container;Start blower during cut paper, the clast that suction nozzle on cutterhead generates cut paper under the action of blower absorbs, to make clast enter in picking-up container, aerial clast is drifted during cut paper to reduce, consequently facilitating cutting off to paper;It can be convenient for being purged to the little particle clast on workbench, consequently facilitating being processed while paper excision.

Description

Convenient for the paper cutter of dedusting
Technical field
The present invention relates to the technical fields of paper cutting, more particularly, to a kind of paper cutter convenient for dedusting.
Background technique
Paper cutter is the paper cutting demand for handling the printing later period at present.
Existing patent can refer to the Chinese utility model patent that Authorization Notice No. is CN204184986U, the patent disclosure A kind of paper cutter unloads paper device, including paper cutter ontology automatically, is provided with below the cut paper platform of paper cutter ontology and unloads automatically Paper device, unloading paper device automatically includes hoistable platform and load paper platform, and hoistable platform is arranged by guide post longitudinal sliding motion in cut paper Below platform, and by lifting actuator transmission connection, platform translation of cutting a sheet of paper is slideably positioned on hoistable platform, flat positioned at cutting a sheet of paper Platform rear side side, which is provided with, unloads paper pushing-unloading device and load paper platform driver, offers on cut paper platform and platform phase of cutting a sheet of paper Corresponding window, is equipped with cut paper collating unit on the cut paper platform of the left and right sides of window, and the preceding avris of window is set It is equipped with baffle.
Prior art among the above has the following deficiencies: that after cutting off to paper, paper scrap and dust can drift In air, sucking dust can generate certain influence to staff to body for a long time, to be not easy to be produced.
Summary of the invention
The object of the present invention is to provide a kind of paper cutters convenient for dedusting, its advantage is that can be to the paper institute after having cut The paper scrap of generation is cleared up, to reduce flying out for paper scrap and dust, while can be cleared up workbench, consequently facilitating The continuous use of paper cutter.
Foregoing invention purpose of the invention has the technical scheme that
A kind of paper cutter convenient for dedusting including workbench, is arranged in the knife rest on workbench top and slides vertically with knife rest The cutterhead of connection, the bottom end of the cutterhead are removably connected with cutter, and the top of the workbench corresponds to cutter and offers cut paper Slot offers suction inlet on the cutterhead, is connected with suction nozzle on the cutterhead suction inlet, and the suction nozzle is towards cutter;
It is hollow structure in the cutterhead, picking-up container is provided in the workbench, the top of the cutterhead passes through hose and connects Hopper is connected to, and is connected with blower in the picking-up container.
By using above-mentioned technical proposal, start blower during cut paper, effect of the suction nozzle on cutterhead in blower Under clast that cut paper is generated absorb, so that clast be made to enter in picking-up container, drifted during cut paper to reduce Aerial clast, consequently facilitating being cut off to paper;It can be convenient for small on workbench while paper excision Particulate debris is purged, consequently facilitating being processed.
The present invention is further arranged to: the top of the workbench offers material-dropping hole, the blanking at cut paper slot Hole bottom end is connected with telescopic cover, and the bottom end of the telescopic cover is connected with baffle;
The baffle is connected to by hose with picking-up container.
By using above-mentioned technical proposal, the charging conduit on workbench can carry out the clast fallen on the table clear Reason drifts aerial clast consequently facilitating reducing, consequently facilitating being produced.
The present invention is further arranged to: cleaning column is provided in the telescopic cover, the cleaning column is connect with flapper, The diameter of the cleaning column is less than the diameter of material-dropping hole;
The actuator for driving baffle sliding is provided in the workbench, after the baffle sliding, the cleaning column extension is gone to work Make platform;
Cleaning piece is connected on the cleaning column, after the cleaning column extends workbench, the cleaning piece is bonded with workbench;
The rotating member for driving cleaning column rotation is provided on the baffle.
By using above-mentioned technical proposal, after cut paper, actuator drives cleaning column to rise, to make to clear up on column Cleaning piece abutted with workbench;Rotating member on baffle drives cleaning column rotation, so that the cleaning piece on cleaning column be driven to turn It is dynamic, consequently facilitating the position at workbench cut paper is cleared up, consequently facilitating excision of the next time to paper, by that can reduce The clast being adhered on paper.
The present invention is further arranged to: the cleaning piece includes several hinge bars, one end of the hinge bar and cleaning column Hingedly, and hinge bar and the column articulated place of cleaning are provided with torsional spring;
Bristle is connected on the hinge bar, after the cleaning column extends workbench, bristle and work on the hinge bar Platform fitting.
By using above-mentioned technical proposal, after cleaning column extends material-dropping hole, hinge bar rotates under the action of torsional spring, from And it is bonded hinge bar with workbench, consequently facilitating being bonded bristle and workbench on hinge bar, consequently facilitating to workbench It is cleared up, the clast of cleaning enters in material-dropping hole under the airflow function of material-dropping hole, hence into in picking-up container, thus Convenient for reducing the clast drifted in air.
The present invention is further arranged to: elastomer block is connected between the hinge bar, the side of the elastomer block offers Material sucking port;
The inside of the elastomer block and the inside of cleaning column are equal hollow structure, and the elastomer block and cleaning column are connected by hose It is logical;
The cleaning column is connected to by hose with picking-up container.
By using above-mentioned technical proposal, elastomer block is set between hinge bar, the side of elastomer block offers material sucking port, from And convenient for when clearing up workbench, increasing the adsorption area to workbench, consequently facilitating reducing the clast drifted in air.
The present invention is further arranged to: the actuator includes the jacking cylinder being fixed in workbench, jacking cylinder Piston rod is fixedly connected with the bottom end of baffle.
By using above-mentioned technical proposal, jacking cylinder drives the sliding of baffle vertical direction, to drive clear stock column vertical Movement, consequently facilitating clearing up workbench, consequently facilitating reducing the clast drifted in air.
The present invention is further arranged to: the top of the hinge bar is connected with block, and placement is offered on the material-dropping hole The placed cavity of block.
By using above-mentioned technical proposal, block and placed cavity cooperate, consequently facilitating limiting to hinge bar, thus just In the movement of hinge bar.
In conclusion advantageous effects of the invention are as follows:
1. starting blower during cut paper, the clast that the suction nozzle on cutterhead generates cut paper under the action of blower is inhaled It receives, so that clast be made to enter in picking-up container, aerial clast is drifted during cut paper to reduce, consequently facilitating right Paper is cut off;It can be convenient for being purged the little particle clast on workbench while paper excision, consequently facilitating It is processed;
2. the charging conduit on workbench can clear up the clast fallen on the table, drift consequently facilitating reducing in air In clast, consequently facilitating being produced;
3. actuator drives cleaning column to rise after cut paper, so that the cleaning piece cleared up on column be made to abut with workbench;Gear Rotating member on plate drives cleaning column rotation, so that the cleaning piece rotation on cleaning column is driven, consequently facilitating to workbench cut paper The position at place is cleared up, consequently facilitating excision of the next time to paper, by the way that the clast being adhered on paper can be reduced.
Detailed description of the invention
Fig. 1 is the overall schematic for embodying the present embodiment;
Fig. 2 is the enlarged diagram for embodying the portion A in Fig. 1;
Fig. 3 is the schematic diagram for embodying picking-up container;
Fig. 4 is the enlarged diagram for embodying the portion B in Fig. 3;
Fig. 5 is the schematic diagram for embodying driving motor;
Fig. 6 is the schematic diagram for embodying hinge bar.
In figure, 1, workbench;11, cut paper slot;12, material-dropping hole;13, cut paper cylinder;2, knife rest;3, cutterhead;31, dust suction Mouthful;32, suction nozzle;4, cutter;5, picking-up container;6, blower;7, telescopic cover;71, baffle;72, hinge bar;721, block;73, elastic Block;74, jacking cylinder;75, link block;76, driving motor;8, column is cleared up.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Referring to Figures 1 and 2, it is a kind of paper cutter convenient for dedusting disclosed by the invention, including workbench 1 and is fixed in The knife rest 2 on 1 top of workbench;Knife rest 2 is in " N " shape, and cut paper chamber, the intracavitary vertical cunning of cut paper are formed between knife rest 2 and workbench 1 Shifting is connected with cutterhead 3, and the bottom end of cutterhead 3 has been bolted cutter 4;Cut paper cylinder 13(such as Fig. 3 institute is connected in 2 top of knife rest Show), the piston rod of cut paper cylinder 13 is fixedly connected with the top of cutterhead 3;It corresponds to and offers at cutter 4 for cutter 4 on workbench 1 The cut paper slot 11 of insertion.
In cut paper, it is intracavitary that paper is placed on cut paper, after starting cut paper cylinder 13, cut paper cylinder 13 is transported with movable knife disc 3 It is dynamic, to drive cutter 4 to move, to make cutter 4 enter in cut paper slot 11, to cut to paper.
As shown in Figure 3 and Figure 4, be hollow structure in cutterhead 3, be provided with picking-up container 5 in workbench 1, the top of cutterhead 3 with Picking-up container 5 is connected by hose, is connected with blower 6 in picking-up container 5;The two sides of cutterhead 3 offer several suction inlets 31, cutterhead 3 Suction inlet 31 be connected to cutterhead 3 inside;Suction nozzle 32, knife of the suction nozzle 32 towards cutter 4 are connected at the suction inlet 31 of cutterhead 3 Sword.
Workbench 1 offers several material-dropping holes 12 about the symmetrical two sides of cut paper slot 11, and the bottom end of material-dropping hole 12 is affixed There is telescopic cover 7, the bottom end of telescopic cover 7 is connected with baffle 71, and baffle 71 connects several telescopic covers 7;It is hollow structure in baffle 71, 71 bottom end of baffle is connected to by hose with picking-up container 5;The part that baffle 71 is located at 7 bottom end of telescopic cover is offered to be connected with telescopic cover 7 Logical through-hole;The top of picking-up container 5 is connected with jacking cylinder 74, the fixed company of the piston rod of jacking cylinder 74 and the bottom end of baffle 71 It connects.
As shown in Figure 5 and Figure 6, it is provided with link block 75 in telescopic cover 7, driving motor 76 is connected in link block 75;It stretches Cleaning column 8 is rotatably connected in contracting cover 7, one end of cleaning column 8 passes through link block 75 and fixes with the output shaft of driving motor 76 The diameter of connection, cleaning column 8 is less than the diameter of material-dropping hole 12;It clears up on the side wall of column 8 and is hinged with several hinge bars 72, hinge bar 72 with cleaning column 8 articulated position at be provided with torsional spring;One end of hinge bar 72 is connected with block 721, opens up on material-dropping hole 12 There is the placed cavity placed for block 721;When the elongation of telescopic cover 7 to maximum position, hinge bar 72 and cleaning column 8 are respectively positioned on work 1 bottom end of platform;Telescopic cover 7 is compressed to most in short-term, and the hinged place of hinge bar 72 and cleaning column 8 is located at 1 top of workbench, and hinge bar 72 side is bonded with workbench 1.
The side that hinge bar 72 is bonded with workbench 1 is connected with bristle;Elastomer block 73 is connected between hinge bar 72, elasticity The side of block 73 towards workbench 1 is connected with bristle, and the side that elastomer block 73 is provided with bristle offers material sucking port;Elastomer block 73 It is hollow structure with cleaning column 8, and elastomer block 73 is connected to by hose with cleaning column 8;Cleaning column 8 is located in telescopic cover 7 Part offers the through-hole being connected to telescopic cover 7.
The implementation principle of the present embodiment are as follows: when being cut to paper, clear up column 8 and hinge bar 72 is respectively positioned on work In platform 1, it is intracavitary that paper is placed on cut paper;Starting blower 6, starts cut paper cylinder 13, cut paper cylinder 13 is moved with movable knife disc 3, To drive cutter 4 to move, to make cutter 4 enter in cut paper slot 11, to complete to cut paper;On cutterhead 3 Cut paper is drifted the sucking of the clast in air by suction nozzle 32, so that the clast of sucking be made to enter in picking-up container 5;Cut paper is completed Afterwards, jacking cylinder 74 drives 71 vertical motion of baffle, extends workbench 1 to make to clear up column 8, to make hinge bar 72 and clear Workbench 1 is extended in the hinged place of reason column 8, so that the side for making hinge bar 72 be equipped with bristle is bonded with workbench 1;Starting driving Motor 76, so that cleaning column 8 be driven to rotate, to clear up the two sides of 1 cut paper slot 11 of workbench, the clast of cleaning is by bullet Property block 73 suck, entered in telescopic cover 7 after clear up column 8, hence into arrive picking-up container 5 in.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it It is interior.

Claims (7)

1. a kind of paper cutter convenient for dedusting, including workbench (1), setting workbench (1) top knife rest (2) and and knife Frame (2) cutterhead (3) that sliding connects vertically, the bottom end of the cutterhead (3) are removably connected with cutter (4), the workbench (1) Top correspond to cutter (4) and offer cut paper slot (11), it is characterised in that: offer suction inlet (31), institute on the cutterhead (3) It states and is connected on cutterhead (3) suction inlet (31) suction nozzle (32), the suction nozzle (32) is towards cutter (4);
It is hollow structure in the cutterhead (3), is provided with picking-up container (5) in the workbench (1), the top of the cutterhead (3) It is connected to by hose with picking-up container (5), is connected with blower (6) on the picking-up container (5).
2. the paper cutter according to claim 1 convenient for dedusting, it is characterised in that: the top of the workbench (1) is close It is offered at cut paper slot (11) material-dropping hole (12), material-dropping hole (12) bottom end is connected with telescopic cover (7), the telescopic cover (7) Bottom end be connected with baffle (71);
The baffle (71) is connected to by hose with picking-up container (5).
3. the paper cutter according to claim 2 convenient for dedusting, it is characterised in that: be provided in the telescopic cover (7) clear It manages column (8), the cleaning column (8) and baffle (71) are rotatablely connected, and the diameter of cleaning column (8) is less than the straight of material-dropping hole (12) Diameter;
The actuator for driving baffle (71) sliding is provided in the workbench (1), after baffle (71) sliding, the cleaning Column (8) extends workbench (1);
Cleaning piece is connected on the cleaning column (8), after the cleaning column (8) extends workbench (1), the cleaning piece and work Make platform (1) fitting;
The rotating member for driving cleaning column (8) rotation is provided on the baffle (71).
4. the paper cutter according to claim 3 convenient for dedusting, it is characterised in that: the cleaning piece includes several hinge bars (72), one end of the hinge bar (72) and cleaning column (8) hingedly, and hinge bar (72) with clear up column (8) hinged place be provided with Torsional spring;
Bristle is connected on the hinge bar (72), after the cleaning column (8) extends workbench (1), the hinge bar (72) On bristle be bonded with workbench (1).
5. the paper cutter according to claim 4 convenient for dedusting, it is characterised in that: be connected between the hinge bar (72) The side of elastomer block (73), the elastomer block (73) offers material sucking port;
The inside of the elastomer block (73) and the inside of cleaning column (8) are equal hollow structure, the elastomer block (73) and cleaning column (8) it is connected to by hose;
The cleaning column (8) is connected to by hose with picking-up container (5).
6. the paper cutter according to claim 3 convenient for dedusting, it is characterised in that: the actuator includes being fixed in work The piston rod of jacking cylinder (74) in platform (1), jacking cylinder (74) is fixedly connected with the bottom end of baffle (71).
7. the paper cutter according to claim 4 convenient for dedusting, it is characterised in that: the top of the hinge bar (72) is affixed Have block (721), the placed cavity for placing block (721) is offered on the material-dropping hole (12).
CN201811236987.1A 2018-10-23 2018-10-23 Paper cutter convenient to remove dust Expired - Fee Related CN109483631B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811236987.1A CN109483631B (en) 2018-10-23 2018-10-23 Paper cutter convenient to remove dust

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811236987.1A CN109483631B (en) 2018-10-23 2018-10-23 Paper cutter convenient to remove dust

Publications (2)

Publication Number Publication Date
CN109483631A true CN109483631A (en) 2019-03-19
CN109483631B CN109483631B (en) 2020-10-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811236987.1A Expired - Fee Related CN109483631B (en) 2018-10-23 2018-10-23 Paper cutter convenient to remove dust

Country Status (1)

Country Link
CN (1) CN109483631B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111069116A (en) * 2019-12-02 2020-04-28 西安金鼎包装设计制作印务有限公司 Gluing device for gluing machine
CN111604980A (en) * 2020-03-24 2020-09-01 广西真龙实业有限责任公司 Dust removal device of splitting machine
CN113752324A (en) * 2021-08-20 2021-12-07 河南桐裕印务有限公司 Dust removal device of paper cutter

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445409A (en) * 1981-01-22 1984-05-01 Karl Mohr Device for cutting paper, cardboard, and similar materials
JP2009269157A (en) * 2008-05-12 2009-11-19 Duplo Corp Cutting device
CN104263860A (en) * 2014-10-17 2015-01-07 浙江安吉惠业家具有限公司 Efficient cutting device for sofa leather
CN206344204U (en) * 2017-01-06 2017-07-21 英德市港隆包装制品有限公司 It is a kind of to be easy to dust-proof automatic paper cutting machine
CN206561456U (en) * 2017-01-22 2017-10-17 敦煌印刷(深圳)有限公司 Paper cutter with Wastepaper Collection function
CN206937403U (en) * 2017-04-16 2018-01-30 河北联合印务有限公司 A kind of paper cutting machine
CN206953080U (en) * 2017-05-18 2018-02-02 深圳市思达印刷有限公司 Paper cutting machine
CN207189751U (en) * 2017-09-22 2018-04-06 深圳朋凯印刷有限公司 A kind of paper cutter
CN207189752U (en) * 2017-09-22 2018-04-06 深圳朋凯印刷有限公司 A kind of paper cutter
CN207534870U (en) * 2017-11-08 2018-06-26 浙江晨天纺织有限公司 A kind of multifunctional fibre production cutter device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445409A (en) * 1981-01-22 1984-05-01 Karl Mohr Device for cutting paper, cardboard, and similar materials
JP2009269157A (en) * 2008-05-12 2009-11-19 Duplo Corp Cutting device
CN104263860A (en) * 2014-10-17 2015-01-07 浙江安吉惠业家具有限公司 Efficient cutting device for sofa leather
CN206344204U (en) * 2017-01-06 2017-07-21 英德市港隆包装制品有限公司 It is a kind of to be easy to dust-proof automatic paper cutting machine
CN206561456U (en) * 2017-01-22 2017-10-17 敦煌印刷(深圳)有限公司 Paper cutter with Wastepaper Collection function
CN206937403U (en) * 2017-04-16 2018-01-30 河北联合印务有限公司 A kind of paper cutting machine
CN206953080U (en) * 2017-05-18 2018-02-02 深圳市思达印刷有限公司 Paper cutting machine
CN207189751U (en) * 2017-09-22 2018-04-06 深圳朋凯印刷有限公司 A kind of paper cutter
CN207189752U (en) * 2017-09-22 2018-04-06 深圳朋凯印刷有限公司 A kind of paper cutter
CN207534870U (en) * 2017-11-08 2018-06-26 浙江晨天纺织有限公司 A kind of multifunctional fibre production cutter device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111069116A (en) * 2019-12-02 2020-04-28 西安金鼎包装设计制作印务有限公司 Gluing device for gluing machine
CN111069116B (en) * 2019-12-02 2021-12-28 西安金鼎包装设计制作印务有限公司 Gluing device for gluing machine
CN111604980A (en) * 2020-03-24 2020-09-01 广西真龙实业有限责任公司 Dust removal device of splitting machine
CN113752324A (en) * 2021-08-20 2021-12-07 河南桐裕印务有限公司 Dust removal device of paper cutter
CN113752324B (en) * 2021-08-20 2022-12-27 河南桐裕印务有限公司 Dust removal device of paper cutter

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Granted publication date: 20201020

Termination date: 20211023