CN111028445A - Bookmark scanning device and method for library based on Internet of things - Google Patents

Bookmark scanning device and method for library based on Internet of things Download PDF

Info

Publication number
CN111028445A
CN111028445A CN202010030445.XA CN202010030445A CN111028445A CN 111028445 A CN111028445 A CN 111028445A CN 202010030445 A CN202010030445 A CN 202010030445A CN 111028445 A CN111028445 A CN 111028445A
Authority
CN
China
Prior art keywords
bookmark
module
box
scanning
identity
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.)
Withdrawn
Application number
CN202010030445.XA
Other languages
Chinese (zh)
Inventor
陈良
徐欣
刘宝锺
廖金权
李媛媛
罗吴
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.)
Chongqing College of Electronic Engineering
Original Assignee
Chongqing College of Electronic Engineering
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 Chongqing College of Electronic Engineering filed Critical Chongqing College of Electronic Engineering
Priority to CN202010030445.XA priority Critical patent/CN111028445A/en
Publication of CN111028445A publication Critical patent/CN111028445A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07GREGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
    • G07G1/00Cash registers
    • G07G1/0036Checkout procedures
    • G07G1/0045Checkout procedures with a code reader for reading of an identifying code of the article to be registered, e.g. barcode reader or radio-frequency identity [RFID] reader
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16Human faces, e.g. facial parts, sketches or expressions
    • G06V40/172Classification, e.g. identification

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

The invention discloses a library bookmark scanning device based on the Internet of things, which comprises a base and a control system, wherein the top of the base is slidably connected with a bookmark box, the top of the bookmark box is movably connected with a scanning box, the front of the bookmark box is fixedly connected with a scanning area, the front of the bookmark box is provided with a bookmark slot, and two sides of the bookmark box are slidably connected with sliding plates. This bookmark scanning device and method for library based on thing networking through to both sides push down the slide, make the slider at the internal surface gliding of spout, it moves down to drive the cardboard through the slider, cooperation reset spring and draw-in groove, make the cardboard break away from the draw-in groove and relieve the spacing between scanning box and the bookmark case, it is spacing to promote back that scanning box can make cardboard and draw-in groove carry out the chucking automatically, and convenient operation not only can accomodate the bookmark that returns in unison, and the bookmark of placing in the bookmark case can not rationalize preserve and conveniently take out.

Description

Bookmark scanning device and method for library based on Internet of things
Technical Field
The invention relates to the technical field of bookmark scanning devices, in particular to a bookmark scanning device and method for a library based on the Internet of things.
Background
The bookmark is used as the title of the inscription, is generally attached to the upper left corner of a cover of the ancient book, and sometimes also comprises a book, the name of the inscription person and a small slice clamped in the book for recording the reading progress. Besides being made of paper, the bookmark can also be made of high-quality pure copper and zinc alloy raw materials and is formed by the processes of nickel plating baking varnish, sand nickel plating, antique copper, pad printing, gold plating baking varnish, double-color electroplating, nickel enamel plating, nickel inlaying and the like. This is called a metal bookmark, and is an innovation in the development process of bookmarks.
Along with the development of science and technology, the bookmark can not only play a role in recording and reading, a device for borrowing books through scanning the bookmark has been popularized in libraries, when the existing library bookmark is scanned to borrow books, the existing library bookmark is directly verified in an identity card brushing mode, the situation of imposition is easy to occur, the scanning device is low in functionality and cannot ensure the safety of borrowing books, returned bookmarks are not uniformly stored, and the problem that the bookmarks cannot be reasonably stored and conveniently taken out exists.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a bookmark scanning device and method for a library based on the Internet of things, and solves the problems that when the existing library bookmark scans and borrows a book, the scanning device is low in functionality, the safety of the book borrowing cannot be guaranteed, the bookmarks are not uniformly stored, and the book borrowing cannot be reasonably stored and is convenient.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a bookmark scanning device for a library based on the Internet of things comprises a base and a control system, wherein the top of the base is connected with a bookmark box in a sliding manner, the top of the bookmark box is movably connected with a scanning box, the front of the bookmark box is fixedly connected with a scanning area, the front of the bookmark box is provided with a bookmark groove, two sides of the bookmark box are both connected with sliding plates in a sliding manner, two sides of the bookmark box are both provided with sliding grooves matched with the sliding plates, two sides of the inside of the bookmark box are both provided with grooves, the inner surfaces of the two grooves are both movably connected with a clamping plate, two sides of the clamping plate are both fixedly connected with sliding blocks, one sides of the two sliding blocks, which are far away from each other, are both connected with the inner walls of the grooves in a sliding manner, one side of the sliding blocks penetrates through the bookmark box and extends to the outside of the bookmark box, the inner surfaces of the two clamping grooves are clamped with the outer surface of the clamping plate, the bottom of the inner cavity of the groove is fixedly connected with a return spring, and the top end of the return spring is fixedly connected with the bottom of the clamping plate.
Preferably, the number of the bookmark slots is multiple, and the bookmark slots are uniformly distributed on the front surface of the bookmark box.
Preferably, the control system comprises a scanning module, a central control unit, an identity authentication module, a photo generation module, a display module, an identity registration unit and a time replacement unit.
Preferably, the output end of the scanning module is connected with the input end of the central control unit, and the output end of the central control unit is connected with the input ends of the identity authentication module and the time replacement unit.
Preferably, the output end of the identity authentication module is connected with the input end of the photo generation module, and the output end of the photo generation module is connected with the input end of the display module.
Preferably, the output end of the identity registration unit is connected with the input end of the central control unit, and the output end of the time replacement unit is connected with the input end of the identity authentication module.
Preferably, the identity registration unit comprises an identity card number entry module, a photo collection module and a mobile phone number entry module.
Preferably, the time replacement unit comprises a time setting module, an identity invalidation module and a mobile phone number verification module.
The invention also discloses a bookmark scanning method for the library based on the Internet of things, which specifically comprises the following steps:
s1, firstly, the borrower needs to register the identity through an identity registration unit before borrowing the book, then the identity card and the bookmark are placed on a scanning area together during borrowing the book, the book is scanned through a scanning module and then analyzed and processed through a central control unit, then the identity authentication module analyzes the borrower, a photo of the borrower is generated through a photo generation module, and meanwhile, a display module displays the photo;
s2, setting the use time of the identity card by the library manager through a time setting module in the time replacement unit, determining that the identity is invalid by an identity invalidation module, and then verifying the verification code provided by the mobile phone number verification module when the borrower borrows the book to scan the bookmark and the identity card next time;
s3, when the book borrower returns the bookmark, the bookmark is placed in the bookmark slot, and when library managers arrange the bookmark, the sliding plates are pressed downwards to two sides, so that the sliding blocks are driven to slide downwards on the inner wall of the groove, and the clamping plate moves downwards in the groove;
s4, the cardboard pushes down reset spring this moment for reset spring compresses, thereby the cardboard breaks away from the draw-in groove of scanning bottom of the case, inwards promotes the scanning case, makes the scanning case slide at the top of bookmark case, then the library manager with the bookmark of bookmark incasement take out can.
(III) advantageous effects
The invention provides a bookmark scanning device and method for a library based on the Internet of things. Compared with the prior art, the method has the following beneficial effects:
(1) the bookmark scanning device and method for the library based on the Internet of things are characterized in that a bookmark box is connected to the top of a base in a sliding mode, the top of the bookmark box is movably connected with a scanning box, the front of the bookmark box is fixedly connected with a scanning area, the front of the bookmark box is provided with a bookmark groove, two sides of the bookmark box are both connected with sliding plates in a sliding mode, two sides of the bookmark box are both provided with sliding grooves matched with the sliding plates, two sides of the inside of the bookmark box are both provided with grooves, the inner surfaces of the two grooves are both movably connected with a clamping plate, two sides of the clamping plate are both fixedly connected with sliding blocks, the sides, away from each other, of the two sliding blocks are both connected with the inner walls of the grooves in a sliding mode, one side of each sliding block penetrates through the bookmark box and extends to the outside of the bookmark box, one side of each, the bottom of the inner cavity of the groove is fixedly connected with a return spring, the top end of the return spring is fixedly connected with the bottom of the clamping plate, when a book borrower returns a bookmark, the bookmark is placed in the bookmark slot, and when library managers arrange the bookmark, the sliding plates are pressed downwards to two sides so as to drive the sliding blocks to slide downwards on the inner wall of the groove, so that the clamping plate moves downwards in the groove; s4, reset spring is pushed down to the cardboard this moment, make reset spring compress, thereby the cardboard breaks away from the draw-in groove of scanning bottom of the case, inwards promote the scanning case, make the scanning case slide at the top of bookmark case, then library' S managers take out the bookmark in the bookmark case can, through pushing down the slide to both sides, make the slider slide down at the internal surface of spout, it moves down to drive the cardboard through the slider, cooperation reset spring and draw-in groove, make the cardboard break away from the draw-in groove and relieve spacing between scanning case and the bookmark case, it is spacing to promote the scanning case and can make cardboard and draw-in groove automatic carry out the chucking backward, high durability and convenient operation, not only can accomodate the bookmark of returning in unison, and the bookmark of placing in the bookmark case can not rationalize preserve and conveniently take out.
(2) The output end of the scanning module is connected with the input end of the central control unit, the output end of the central control unit is connected with the input ends of the identity authentication module and the time replacement unit, the output end of the identity authentication module is connected with the input end of the photo generation module, the output end of the photo generation module is connected with the input end of the display module, the output end of the identity registration unit is connected with the input end of the central control unit, the output end of the time replacement unit is connected with the input end of the identity authentication module, S1, firstly, a borrower needs to pass through the identity registration unit for identity registration before borrowing a book, then, the identity card and a bookmark are placed on the scanning area together when borrowing the book, the book is scanned by the scanning module, then, the book is analyzed by the central control unit, and then the identity authentication module analyzes the borrower, the photo generation module generates a photo of the borrower, and the display module displays the photo; s2, the library manager sets the service time of the identity card through the time setting module in the time replacement unit, the identity invalidation module determines that the identity is invalid, then when the borrower borrows the book to scan the bookmark and the identity card next time, the mobile phone number verification module verifies the verification code provided by the mobile phone number, the bookmark and the identity card are scanned through the scanning module, the borrower picture is analyzed and displayed through the identity authentication module and the picture generation module, the display module is matched to display the bookmark and the time replacement unit can periodically cancel the authentication qualification of the borrower to obtain the form of the verification code to be reactivated, and when the bookmark scans the book, the situation of imposition is avoided, the functionality of the scanning device is improved, and the safety of the book borrowing is greatly guaranteed.
(3) This bookmark scanning device for library based on thing networking, through including the ID card number at identity registration unit and type the module, photo acquisition module and cell-phone number type the module, the time replacement unit is including setting for the time module, identity failure module and cell-phone number verification module, through setting for the ID card number type the module, photo acquisition module and cell-phone number type the module, when having guaranteed to carry out books and borrowing, the integrality of identity, the security performance is high, set for the time module, identity failure module and cell-phone number verification module, can be when carrying out the secondary verification, shorten verification time, and convenient operation.
Drawings
FIG. 1 is a perspective view of the external structure of the present invention;
FIG. 2 is a perspective view of a portion of the present invention;
FIG. 3 is a partial structural cross-sectional view of the bookmarker case of the present invention;
FIG. 4 is a functional block diagram of the control system of the present invention;
FIG. 5 is a functional block diagram of an identity registration unit of the present invention;
fig. 6 is a schematic block diagram of the time replacement unit of the present invention.
In the figure, 1-base, 2-control system, 21-scanning module, 22-central control unit, 23-identity authentication module, 24-photo generation module, 25-display module, 26-identity registration unit, 27-time replacement unit, 3-bookmark box, 4-scanning box, 5-scanning area, 6-bookmark slot, 7-slide plate, 8-slide slot, 9-groove, 10-snap plate, 11-slide block, 12-snap groove and 13-reset spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, an embodiment of the present invention provides a technical solution: a bookmark scanning device for library based on Internet of things comprises a base 1 and a control system 2, wherein the control system 2 comprises a scanning module 21, a central control unit 22, an identity authentication module 23, a photo generation module 24, a display module 25, an identity registration unit 26 and a time replacement unit 27, the central control unit 22 is an ARM9 series microprocessor, the time replacement unit 27 comprises a time setting module, an identity invalidation module and a mobile phone number verification module, the identity registration unit 26 comprises an identity card number recording module, a photo collection module and a mobile phone number recording module, the output end of the identity registration unit 26 is connected with the input end of the central control unit 22, the output end of the time replacement unit 27 is connected with the input end of the identity authentication module 23, the output end of the identity authentication module 23 is connected with the input end of the photo generation module 24, the output end of the photo generation module 24 is connected with the input end of the display module 25, the output end of the scanning module 21 is connected with the input end of the central control unit 22, the output end of the central control unit 22 is connected with the input ends of the identity authentication module 23 and the time replacement unit 27, the top of the base 1 is connected with the bookmark box 3 in a sliding manner, the top of the bookmark box 3 is movably connected with the scanning box 4, the front of the bookmark box 3 is fixedly connected with the scanning area 5, the front of the bookmark box 3 is provided with a plurality of bookmark slots 6, the bookmark slots 6 are uniformly distributed on the front of the bookmark box 3, the two sides of the bookmark box 3 are respectively connected with the sliding plates 7 in a sliding manner, the two sides of the bookmark box 3 are respectively provided with a sliding groove 8 matched with the sliding plates 7, the two sides of the inside of the bookmark box 3 are respectively provided with a groove 9, the inner surfaces of the two grooves 9 are respectively and movably connected with the cardboard 10, the two sides of the cardboard 10 are respectively and fixedly connected with the, one side of a sliding block 11 penetrates through the bookmark box 3 and extends to the outside of the bookmark box 3, one side of the sliding block 11 is fixedly connected with the left side of a sliding plate 7, clamping grooves 12 are formed in two sides of the bottom of a scanning box 4, the inner surfaces of the two clamping grooves 12 are clamped with the outer surface of a clamping plate 10, a return spring 13 is fixedly connected with the bottom of an inner cavity of a groove 9, the top end of the return spring 13 is fixedly connected with the bottom of the clamping plate 10, the sliding plate 7 is pressed downwards towards two sides, the sliding block 11 slides downwards on the inner surface of a sliding groove 8, the clamping plate 10 is driven to move downwards through the sliding block 11, the return spring 13 and the clamping grooves 12 are matched, the clamping plate 10 is separated from the clamping grooves 12 to relieve the limit between the scanning box 4 and the bookmark box 3, the scanning box 4 is pushed backwards to enable the clamping plate 10 and the clamping grooves 12 to automatically carry out clamping limit, the operation is convenient, returned, and those not described in detail in this specification are well within the skill of those in the art.
The invention also discloses a bookmark scanning method for the library based on the Internet of things, which specifically comprises the following steps:
s1, firstly, before borrowing, the borrower needs to register the identity through the identity registration unit 26, then the borrower places the identity card and the bookmark on the scanning area 5 together during borrowing, the identity card and the bookmark are scanned through the scanning module 21, the central control unit 22 is used for analyzing and processing, then the identity authentication module 23 is used for analyzing the borrower, the picture of the borrower is generated through the picture generation module 24, and the display module 25 is used for displaying;
s2, setting the use time of the identity card by the library manager through the time setting module in the time replacement unit 27, determining that the identity is invalid by the identity invalidation module, and then verifying the verification code provided by the mobile phone number verification module when the borrower borrows the book to scan the bookmark and the identity card next time;
s3, when the book borrower returns the bookmark, the bookmark is put in through the bookmark slot 6, when library managers arrange the bookmark, the sliding plates 7 are pressed downwards to two sides, and then the sliding blocks 11 are driven to slide downwards on the inner wall of the groove 9, so that the clamping plate 10 moves downwards in the groove 9;
s4, the cardboard 10 pushes down the return spring 13 at this moment, so that the return spring 13 is compressed, the cardboard 10 is separated from the clamping groove 12 at the bottom of the scanning box 4, the scanning box 4 is pushed inwards, the scanning box 4 slides on the top of the bookmark box 3, and then a library manager can take out the bookmark in the bookmark box 3.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a bookmark scanning device for library based on thing networking, includes base (1) and control system (2), the top sliding connection of base (1) has bookmark case (3), and the top swing joint of bookmark case (3) has scanning case (4), its characterized in that: the front of the bookmark box (3) is fixedly connected with a scanning area (5), the front of the bookmark box (3) is provided with a bookmark groove (6), two sides of the bookmark box (3) are both connected with sliding plates (7) in a sliding manner, two sides of the bookmark box (3) are both provided with sliding grooves (8) matched with the sliding plates (7), two sides of the inside of the bookmark box (3) are both provided with grooves (9), the inner surfaces of the two grooves (9) are both movably connected with clamping plates (10), two sides of the clamping plates (10) are both fixedly connected with sliding blocks (11), one sides of the two sliding blocks (11) which are far away from each other are both connected with the inner walls of the grooves (9) in a sliding manner, one sides of the sliding blocks (11) penetrate through the bookmark box (3) and extend to the outside of the bookmark box (3), one sides of the sliding blocks (11) are fixedly connected with the left side of the sliding plates (7), two sides of the bottom of, the inner surfaces of the two clamping grooves (12) are clamped with the outer surface of the clamping plate (10), the bottom of the inner cavity of the groove (9) is fixedly connected with a return spring (13), and the top end of the return spring (13) is fixedly connected with the bottom of the clamping plate (10).
2. The bookmark scanning device for library based on the internet of things of claim 1, wherein: a plurality of bookmark slots (6) are formed, and the bookmark slots (6) are uniformly distributed on the front surface of the bookmark box (3).
3. The bookmark scanning device for library based on the internet of things of claim 1, wherein: the control system (2) comprises a scanning module (21), a central control unit (22), an identity authentication module (23), a photo generation module (24), a display module (25), an identity registration unit (26) and a time replacement unit (27).
4. The bookmark scanning device for library based on the internet of things of claim 1, wherein: the output end of the scanning module (21) is connected with the input end of the central control unit (22), and the output end of the central control unit (22) is connected with the input ends of the identity authentication module (23) and the time replacement unit (27).
5. The bookmark scanning device for library based on the internet of things of claim 1, wherein: the output end of the identity authentication module (23) is connected with the input end of the photo generation module (24), and the output end of the photo generation module (24) is connected with the input end of the display module (25).
6. The bookmark scanning device for library based on the Internet of things as claimed in claim 3, wherein: the output end of the identity registration unit (26) is connected with the input end of the central control unit (22), and the output end of the time replacement unit (27) is connected with the input end of the identity authentication module (23).
7. The bookmark scanning device for library based on the Internet of things as claimed in claim 3, wherein: the identity registration unit (26) comprises an identity card number input module, a photo collection module and a mobile phone number input module.
8. The bookmark scanning device for library based on the Internet of things as claimed in claim 3, wherein: the time replacement unit (27) comprises a time setting module, an identity invalidation module and a mobile phone number verification module.
9. A bookmark scanning method for a library based on the Internet of things is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, firstly, the borrower needs to register the identity through an identity registration unit (26) before borrowing the book, then the identity card and the bookmark are placed on a scanning area (5) together during borrowing the book, the book is scanned through a scanning module (21), the book is analyzed and processed through a central control unit (22), then the borrower is analyzed through an identity authentication module (23), a photo of the borrower is generated through a photo generation module (24), and the photo is displayed through a display module (25);
s2, the library manager sets the use time of the identity card through the time setting module in the time replacing unit (27), the identity invalidation module determines that the identity is invalid, and then the mobile phone number verification module verifies the verification code provided by the mobile phone number when the borrower borrows the book to scan the bookmark and the identity card next time;
s3, when a book borrower returns the bookmark, the bookmark is placed in the bookmark slot (6), and when library managers arrange the bookmark, the sliding plates (7) are pressed downwards to two sides, so that the sliding blocks (11) are driven to slide downwards on the inner wall of the groove (9), and the clamping plates (10) move downwards in the groove (9);
s4, the return spring (13) is pressed down by the clamping plate (10) at the moment, the return spring (13) is compressed, the clamping plate (10) is separated from the clamping groove (12) at the bottom of the scanning box (4), the scanning box (4) is pushed inwards, the scanning box (4) slides at the top of the bookmark box (3), and then a library manager can take out the bookmark in the bookmark box (3).
CN202010030445.XA 2020-01-13 2020-01-13 Bookmark scanning device and method for library based on Internet of things Withdrawn CN111028445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010030445.XA CN111028445A (en) 2020-01-13 2020-01-13 Bookmark scanning device and method for library based on Internet of things

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010030445.XA CN111028445A (en) 2020-01-13 2020-01-13 Bookmark scanning device and method for library based on Internet of things

Publications (1)

Publication Number Publication Date
CN111028445A true CN111028445A (en) 2020-04-17

Family

ID=70198982

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010030445.XA Withdrawn CN111028445A (en) 2020-01-13 2020-01-13 Bookmark scanning device and method for library based on Internet of things

Country Status (1)

Country Link
CN (1) CN111028445A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112733562A (en) * 2021-01-20 2021-04-30 德州学院 Bookmark scanning device for library based on thing networking

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112733562A (en) * 2021-01-20 2021-04-30 德州学院 Bookmark scanning device for library based on thing networking

Similar Documents

Publication Publication Date Title
CN111028445A (en) Bookmark scanning device and method for library based on Internet of things
CN106340737A (en) Card insertion device and terminal
ATE113904T1 (en) BINDING DEVICE.
CN209514705U (en) A kind of information data collector for company management
CN211242264U (en) Intelligent material collecting and rotating cabinet
CN108449526A (en) A kind of Portable document scanner
CN213128527U (en) Library is with table of borrowing convenient to fixed books
CN204793406U (en) MicroSD card cassette with self -locking mechanism
CN212181515U (en) All-in-one machine with identity recognition and payment functions
CN212073448U (en) Voucher clamp that accounting was used
CN211566132U (en) Voucher perforating device for accounting
CN209879578U (en) Wisdom campus teaching attendance machine
CN217969021U (en) File that structure is firm
CN112614284B (en) Intelligent bookshelf of borrowing by oneself
CN213999842U (en) Wood board hot-pressing equipment
CN206147859U (en) Automatic borrow still book machine
CN211186268U (en) Intelligent office table of thing networking
CN217279714U (en) Storage cabinet for storing physical examination reports
CN213935081U (en) Fascial administration service terminal machine based on face and voice recognition
CN216000187U (en) Automatic grafting tool for additive manufacturing metal piece and metal panel
CN211533116U (en) Square table convenient to concatenation
CN220482934U (en) Accounting is bill storage device for office
CN220631751U (en) Engineering consultation service data table
CN117939799B (en) PCB bending machine and working method thereof
CN214449666U (en) Accounting document finishing device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20200417

WW01 Invention patent application withdrawn after publication