CN207790060U - A kind of unlimited printer of intelligence - Google Patents

A kind of unlimited printer of intelligence Download PDF

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Publication number
CN207790060U
CN207790060U CN201721874531.9U CN201721874531U CN207790060U CN 207790060 U CN207790060 U CN 207790060U CN 201721874531 U CN201721874531 U CN 201721874531U CN 207790060 U CN207790060 U CN 207790060U
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China
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wheel
omni
driven
driven wheel
printer
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Chinese (zh)
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韩云
吕小英
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Neijiang Normal University
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Neijiang Normal University
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Abstract

The utility model discloses a kind of unlimited printer of intelligence, including moving trolley, print module and its printing drive module, and the control module for controlling the moving trolley and printing drive module are provided in the moving trolley;Print head cartridge in the moving trolley of accurate positioning, according to printing demand, is realized the large-scale printing not limited by wide cut, breaches limitation of the traditional prints to material, can both be printed on flexible material, can also be printed on hard material by the utility model.

Description

A kind of unlimited printer of intelligence
Technical field
The utility model is related to print field, and in particular to a kind of unlimited printer of intelligence.
Background technology
Currently, most of printer is all integrally fixed at some specific position, print module is printed by row, paper advance mechanism It rotates to realize the movement of paper, to complete to print.The wide cut of printer determines printable greatest width dimension, together When, paper feeding structure realizes the movement of paper generally by the way of rotation so that current printer generally can only be in flexibility It is printed on material.
Made by structure, there are the following problems for current printer:Wide cut is printed to be limited, it can only be on the paper for limiting wide cut Printing, cannot achieve the printing of arbitrary wide cut size;It is limited to print material, is generally merely able to print on flexible material, it cannot It is printed on the hard materials such as similar metope, floor;Application range is limited:It can only generally be printed in specific space, nothing The print out task of the outdoor wall of method completion, indoor ceiling, limits its scope of application;The printer of big wide cut is bulky, It is mobile inconvenient.
Utility model content
The purpose of this utility model is that:A kind of unlimited printer of intelligence is provided, solves current printer due to itself Reasons in structure cannot achieve the technical issues of arbitrary wide cut size marking.
The technical solution adopted in the utility model is as follows:
A kind of unlimited printer of intelligence, including moving trolley are provided with print module and its printing in the moving trolley Drive module, and the control module for controlling the moving trolley and printing drive module.
Further, the moving trolley includes shell, and the shell lower section is provided with high-precision complete in " ten " font It is respectively included between two identical omni-directional wheels and omni-directional wheel to wheel group A and omni-directional wheel group B, the omni-directional wheel group A and omni-directional wheel group B Connected by axle, the omni-directional wheel group A from the wheel hub of omni-directional wheel group B is of different sizes that two axles is made to be located at different horizontal planes, The omni-directional wheel group A is driven by driving motor A, and the omni-directional wheel group B is driven by driving motor B, the driving motor A and driving Motor B link control modules.
Further, the omni-directional wheel includes wheel hub, is provided with supporting rack on the wheel hub excircle, on support frame as described above It is provided with driven wheel, the rotation direction of the driven wheel is vertical with the rotation direction of the wheel hub, on the wheel hub excircle altogether 3 row's driven wheels are provided with, the driven wheel surface is provided with lines along the driven wheel direction of motion.
Further, it the radius r of the wheel hub and often arranges the number n=24 of driven wheel on driven wheel and makes formulaIn X >=6mm when, often arrange driven wheel on be arranged 24 driven wheels, wherein X indicate driven wheel length;
The radius r of the wheel hub and the number n=24 for often arranging driven wheel on driven wheel make formulaIn X < 6mm when, often arranging the number of driven wheel on driven wheel isAnd n takes maximum positive integer.
Further, support frame as described above is integrally formed with wheel hub;Support frame as described above is integrally formed with support shaft, institute State driven wheel setting support shaft on, it is described support shaft between the length for being smaller than driven wheel make driven wheel fix and It does not fall out;The wheel hub and supporting rack are plastic material, and driven wheel is elastoplastic.
Further, it is provided with anticollision inductor in the moving trolley, for preventing the moving trolley and barrier It collides, the anticollision inductor is connect with control module.
Further, unlimited printer further includes remote control terminal;Communication module is additionally provided in moving trolley, for passing Control signal between the defeated remote control terminal and control module.
Further, it is additionally provided with vacuum cup and its driving device in the moving trolley, enables moving trolley in wall It is moved on face, the driving device of the vacuum cup is connect with control module.
In conclusion by adopting the above-described technical solution, the utility model has the beneficial effects that:
1. the utility model in the moving trolley of accurate positioning, according to printing demand, realizes print head cartridge not by width The large-scale printing of width limitation, breaches limitation of the traditional prints to material, can both be printed on flexible material, can also It is printed on hard material.
2. the moving trolley that the utility model uses realizes the free movement of X and Y-direction, kinematic accuracy is high, movement essence Degree reaches 0.50-1.00mm, which can also keep straight-line travelling, walking path will not be curved when moving relatively long distance It is bent;The intelligent radio printer minimum of the utility model can print No. five fonts, and the spacing between font is uniform, row and row Between will not be overlapped, printing effect is good.
3. the utility model can not only be printed in the horizontal plane, as a result of vacuum cup, realize arbitrary It is printed on the metope of angle;
4. the utility model is widely used, it can be not only used for advertisement printed, additionally it is possible to for indoor colored drawing etc..
5. the utility model uses remote controlled manner, easy to operate, easy to use, Automatic Control is realized;Extension Property is good, replaces different print modules and can be achieved with different printing functions.
6. in the utility model omni-directional wheel often arrange driven wheel in driven wheel number it is more, the minimum for enabling omni-directional wheel to rotate Angle smaller, under identical control condition, mobile distance is more accurate;3 row's driven wheels are set on wheel hub excircle, when one When arranging the support base damage in driven wheel, the movement of driven wheel in addition two rows of driven wheels is not influenced, under extreme conditions It is also ensured that the precision of movement;Lines is set in driven wheel surface, while using 3 row's structures, can prevent omni-directional wheel from moving When have skidded phenomenon, improve the precision of movement;It can disperse the pressure that omni-directional wheel is born using 3 row's structures, improve omni-directional wheel Service life makes to be more prone to be controlled using the trolley of the omni-directional wheel.
7. wheel hub, supporting rack, support shaft are integrally formed, wheel hub, supporting rack, support shaft and driven wheel are plastics The cost of material, an omni-directional wheel is 5 yuan or so, at low cost, is suitble to large-scale production;According to metal material, homogenous configuration Omni-directional wheel cost be 600 yuan;Due to driven wheel very little, installation is inconvenient, can be merely with small instruments and tools using elastoplastic Driven wheel can be installed between supporting shaft, it is easy for installation.
8. be provided with anticollision inductor in the utility model, make trolley in print procedure can avoiding obstacles, prevent Damage.
Description of the drawings
The utility model will illustrate by example and with reference to the appended drawing, wherein:
Fig. 1 is the overall structure figure of the utility model;
Fig. 2 is the upward view of the utility model of the whole structure diagram;
Fig. 3 is the front view of the utility model of the whole structure diagram;
Fig. 4 is the side view of omni-directional wheel in the utility model;
Fig. 5 is the front view of omni-directional wheel in the utility model;
Fig. 6 is the driven wheel surface enlarged diagram of the utility model;
Fig. 7 is the schematic diagram of coupling part between omni-directional wheel and axle in the utility model;
Fig. 8 is the composite structural diagram of the utility model hardware components;
Fig. 9 is the work flow diagram of the utility model control module A;
Figure 10 is the work flow diagram of the utility model control module B;
Figure 11 is the work flow diagram of the utility model print module;
Figure 12 is the work flow diagram of the utility model host computer;
Reference numeral:1- omni-directional wheels, 101- wheel hubs, 102- driven wheels, 103- supporting racks, 104- support shaft, and 105- is just Square hole, 106- lines, 2- coupling nuts, 3- threaded holes, 4- nuts, 5- axles, 6- shells, 7- omni-directional wheel group A, 8- omni-directional wheels Group B, 9- driving motors A, 10- driving motor B, 11- control module, 12- print modules, 13- anticollision inductors, 14- vacuum are inhaled The driving device of disk, 15- vacuum cups, 16- power modules.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive Feature and/or step other than, can combine in any way.
It elaborates below in conjunction with the accompanying drawings to the utility model.
A kind of unlimited printer of intelligence (as shown in figs. 1-7), including moving trolley are provided with printing in the moving trolley Module 12 and its printing drive module, and the control module 11 for controlling the moving trolley and printing drive module.
The moving trolley includes shell 6, and 6 lower section of the shell is provided with high-precision omni-directional wheel group A7 in " ten " font With omni-directional wheel group B8, the omni-directional wheel group A7 and omni-directional wheel group B8 respectively include between two identical omni-directional wheels 1 and omni-directional wheel by Axle 5 connects, the omni-directional wheel group A7 from the wheel hub 101 of omni-directional wheel group B8 is of different sizes that two axles 5 is made to be located at different water Plane, the omni-directional wheel group A7 are driven by driving motor A9, and the omni-directional wheel group B8 is driven by driving motor B10, the driving Motor A9 and driving motor B10 link control modules 11.
The omni-directional wheel includes wheel hub 101, and supporting rack 103, support frame as described above are provided on 101 excircle of the wheel hub Driven wheel 102 is provided on 103, the rotation direction of the driven wheel 102 is vertical with the rotation direction of the wheel hub 101, described 3 row's driven wheels 102 are provided on 101 excircle of wheel hub altogether, 102 surface of the driven wheel is arranged along 102 direction of motion of driven wheel There is lines 106.
The radius r of the wheel hub 101 and the number n=24 for often arranging driven wheel 102 on driven wheel make formulaIn X >=6mm when, often arrange driven wheel on be arranged 24 driven wheels 102, wherein X indicate driven wheel length Degree;The radius r of the wheel hub 101 and the number n=24 for often arranging driven wheel 102 on driven wheel make formula In X < 6mm when, often arranging the number of driven wheel on driven wheel isAnd n takes maximum positive integer.
Support frame as described above 103 is integrally formed with wheel hub 101;Support frame as described above 103 is integrally formed with support shaft 104, the setting of the driven wheel 102 is smaller than driven wheel 102 in support shaft 104 between the support shaft 104 Length makes driven wheel 102 fix and does not fall out;The wheel hub 101 and supporting rack 103 are plastic material, and driven wheel 102 is bullet Property plastics.
Anticollision inductor 13 is provided in the moving trolley, for preventing the moving trolley and barrier from touching It hits, the anticollision inductor 13 is connect with control module 11.
Unlimited printer further includes remote control terminal;It is additionally provided with communication module in moving trolley, is used for transmission described remote Control signal between process control end and control module 11.
It is additionally provided with the driving device 14 of vacuum cup 15 and vacuum dishwashing in the moving trolley, moving trolley is enable to exist It is moved on metope, the driving device 14 of the vacuum cup is connect with control module 11.
Specific embodiment 1
Control module 11 includes control module A and control module B (as shown in Figure 8), the control module A in the present embodiment Including SD card module, control chip A, key-press module, LCD MODULE and printing drive module, wherein the type of control chip A Number be Arduino Mega2560;Driving motor A9 and driving motor B10 is stepper motor, and Mega2560 is responsible for stepping electricity Machine, the driving device 14 of vacuum cup, printing drive module, power module 16, SD card module, key-press module and liquid crystal display The control and driving of module;The control module B includes wireless communication module and control chip B, the model of the control chip B For ARM9, ARM9 receives the fileinfo that APP is sent row format of going forward side by side by wireless communication module and converts, and stores the result into SD In the SD card of module.
Wherein power module 16 includes LM7824, LM7812, LM7805, MCP1700-330 and filter circuit, is exported respectively Export 3.3V, 5V, 12V and 24V direct current;3.3V is SD card module for power supply, and 5V is Arduino Mega2560 power supplies, and 12V is step Stepper motor is powered, and 24V powers for print module 12.
Wireless communication module includes WiFi module and bluetooth module, and data are passed through the ends PC or hand by alternative conventional serial interface line Machine APP is sent to control module 11;The replacement to conventional serial interface line is realized using Bluetooth technology, and 0 is realized within the scope of 50 meters of interior Control information is transmitted, and bluetooth module is not added with any peripheral circuit (such as LED, MAX3232 etc.), it is 10 meters indoor within the scope of, without bright Aobvious sovereignty nuisance (such as envelope wall, metal wall), no intense electromagnetic interfere the (ring worked at the same time such as more than 100 bluetooths Border), bluetooth module is consistent with adapter frequency point standard (assuming that the frequency point of the Bluetooth adapter of producer is very unified accurately feelings Under condition, the bluetooth frequency point of the Bluetooth adapter of general regular Bluetooth of mobile phone and certified products is considered standard compliant), bluetooth mould Nearby (it is not in test scope that pcb board has the case where floor file below such as antenna to cabling, device without absorption signal etc. to block antenna );The replacement to conventional serial interface line is realized using WiFi wireless broad band technologies, is that the input of 0 control information is realized within the scope of 90 meters, Serial ports WiFi wireless modules are the pluging and playing modules that the WiFi signal of wireless aps is converted to serial ports, are based on standard UART interfaces Meet the WiFi wireless network embedded modules of IEEE802.11b/g patterns.Wireless network protocol IEEE802.11 built in module Protocol stack and ICP/IP protocol stack can realize user's serial data to the conversion between wireless network.Module uses high property Can low-power consumption IEEE802.11b/g wireless communication chips, Embedded high-performance microprocessor realizes the transparent of serial data Transmission works in 2.4GHz global open ISM bands and exempts from licensing use, serial ports is connected to after computer and is carried out with configurator The setting of traffic rate, format, coding etc., without other any programmers;APP will be printed by serial ports WiFi wireless modules Fileinfo is sent to ARM9.
File system built in SD modules can directly carry out file read-write, be suitable for SCM system and realize massive store Scheme;The mimeograph documents information that ARM9 is received is stored directly in by SD card module in SD card.
Driving motor A9 and driving motor B10 is all made of the driving chip of model ULN20033AN, the chip high voltage, The Darlington drive array of high current is a reverser for open collector (OC) output;Maximum drive current can reach 500mA, maximum output voltage are 50 volts;Using two panels ULN2003 respectively drive X, Y-direction stepper motor.
Key-press module mainly controls the positioning of print head in print module 12, the adjusting of print speed and printing, cleaning Nozzle etc.;Key-press module in the present embodiment shares 10 Independent keys;Two buttons are for before controlling stepper motor X-direction Into advance and retrogressing, menu (Menu) key, the printing (Print) for being used to control stepper motor Y-direction with retrogressing, two buttons Key, calibration (Calibrate), extra demand (Extra), the positioning key on positioning key and Y-direction in X-direction.
LCD MODULE then exports current working condition;The model LCD1602 of LCD MODULE, can show Every 16 characters of row of 2 rows, contrast is adjustable, yellow green backlight;Power range 4.5V-5.5V, 4/8 line of data/address bus.Respectively Kind type information and hardware information pass through LCD MODULE real-time display.
Specific embodiment 2
Mobile lower section of getting off is provided with 5 vacuum cups 15, and a driving device is respectively set in each vacuum cup 15, very The driving device 14 of suction disk 15 and vacuum cup composition climbs wall module, is distributed in quadrangle and center, the drive of vacuum cup Dynamic device 14 is vacuum generator, and when sucker is completely attached to working surface, corresponding solenoid valve is opened, while therewith Connected vacuum generator work generates vacuum, and sucker just adsorbs on the work surface;The control that vacuum cup 15 passes through solenoid valve Co-ordination processed climbs wall function to make trolley be adsorbed on metope realization.Often there is adhesive tape, seam and small table in working surface Face bumps etc., often gas leakage causes the adsorption capacity of the sucker to be lost when vacuum cup 15 is attached to above;If only Single sucker suction power is lost, and the general bonding strength that can only weaken adsorption system to a certain extent can't lead to connection Failure.
Specific embodiment 3
The lower section of moving trolley shell 6 is provided with high-precision omni-directional wheel group A7 and omni-directional wheel group B8 in " ten " font, described Omni-directional wheel group A7 and omni-directional wheel group B8 respectively includes being connected by axle 5 between two identical omni-directional wheels 1 and omni-directional wheel, connection type Specially (as shown in Figure 7):Including coupling nut 2, nut 4 and axle 5,2 junction of the coupling nut is square, connection Place is provided with threaded hole 3, and 5 both ends of axle are respectively arranged with screw thread, and the screw thread coordinates with threaded hole 3,101 center of the wheel hub Be provided with square hole 105, the square hole 105 and the junction of coupling nut 2 coordinate, the axle 5 and wheel hub 101 it Between be arranged nut 4, make wheel hub 101 fix;Wheel hub 101 may be implemented using square hole 105 and nut 4 using the structure It positions and fixed, prevents wheel hub 101 from being slided along 5 direction of axle;
The wheel hub 101 of omni-directional wheel 1 is straight in the wheel hub 101 a diameter of 70mm, omni-directional wheel group B8 of omni-directional wheel in omni-directional wheel group A7 Diameter is 55mm, and 102 length of driven wheel is 6mm, and 102 numbers of driven wheel that driven wheel 102 is often arranged on every omni-directional wheel 1 are 24;Since two groups of 101 diameters of omni-directional wheel wheel hub are different, the axle 5 of this two groups of omni-directional wheels is connected not in same level;Institute It states omni-directional wheel group A7 to be driven by driving motor A9, the omni-directional wheel group B8 is driven by driving motor B10, driving motor A9 and driving Motor B10 is respectively connected with gearbox;Driving motor A9 and driving motor B10 are connect with control device;
Since two groups of omni-directional wheels are mounted for " ten " word structure, and the rotation direction of driven wheel 102 and the wheel hub 101 Rotation direction is vertical;Enable one group of omni-directional wheel move in X direction, one group of omni-directional wheel is moved along Y-direction, when omni-directional wheel group in X direction When movement, the driven wheel 102 in Y-direction omni-directional wheel group moves in X direction, reduces what Y-direction omni-directional wheel moved omni-directional wheel group It hinders;Similarly, when omni-directional wheel group is moved along Y-direction, the driven wheel 102 in X-direction omni-directional wheel group is moved along Y-direction, reduces X The obstruction that direction omni-directional wheel moves omni-directional wheel group;High-precision on omni-directional wheel group X and Y-direction fortune is realized using the structure It is dynamic.
Specific embodiment 4
2 anticollision inductors 13 are installed in the moving trolley quadrangle respectively prevents car body from touching for detecting barrier It hits, anticollision inductor 13 uses ultrasonic sensor, the signal that anticollision inductor 13 acquires to be sent to moving trolley control submodule Block is handled.
The print module 12 being arranged in moving trolley is inkjet printing component, and model Hewlett-Packard 51604A can be according to difference Printing demand replaced.
Specific embodiment 5
The present embodiment is the software architecture and development environment of intelligent radio printer based on embodiment 1.
The development environment of software is Android in the intelligent radio printer, including Java developing instruments (Java Development Kit, JDK).Arduino is a hardware and software platform based on open source, is implemented in open source Simple I/0 interface versions, and with the Processing/Wiring development environments using similar Java, C language.
The intelligent radio printer is made of host computer and slave computer, and host computer, that is, remote control terminal is made of, APP APP Can mount to mobile phone, either computer mainly realizes that picture or document information are read and to slave computer transmission data.Slave computer is Control module, slave computer can be handled the data obtained from host computer, by print command, complete printing.Meanwhile being Facilitate user to check, a function that can generate report is added in host computer, user is made to may browse through beating for oneself Imprinted.In addition to this, a function of reminding and delete database information is also added.
The workflow of wherein control chip A, that is, Mega2560 is (as shown in Figure 9):After being first powered up, all modules into Row initialization operation detects subsequently into button, such as without button, continues to detect, until there is key pressing.Further according to key-case into Enter different mode, executes corresponding function.Both of which is shared in this system:Menu mode and normal mode.In menu mode Under, the direction x, y (i.e. trolley transversely with the speed of longitudinal movement) is adjusted, also the prepared Chinese ink of adjustable ink jet printer nozzles Amount;In the normal mode, it can be achieved that positioning to the direction x, y (i.e. to the print head on trolley), and to print head top nozzle Cleaning, and the printing function of file can be completed;In both modes, current working condition can be shown by liquid crystal.
The workflow for controlling chip B, that is, ARM9 is (as shown in Figure 10):After being first powered up, system can to all modules into Row initialization operation continues to detect, until there is file reception to arrive subsequently into file reception inquiry state such as without file reception; After file reception arrives, format conversion processing is carried out to file by MCU, and should treated file store into SD card.
The workflow (as shown in figure 11) of print module is:Print button is pressed, file is opened from SD card, judgement is No opening starts to print if so, trolley and print head reset, and after a row are completed in printing, judgement is line feed or continues under printing One row.
The workflow of remote control terminal is (as shown in figure 12):When using mobile phone as host computer, cell phone application reads hand The file that can print in machine, user are operated by interface.It chooses whether to open file first, chooses whether to be beaten Otherwise print directly returns to APP main interfaces if then sending the information of mimeograph documents to slave computer receiving terminal;Slave computer passes through Whether WiFi module prints success to host computer feedback, the report for successfully then generating user's print record is printed, if not printing Success, user can choose whether to print again by APP, abandon printing directly return APP main interfaces, continue print progress and return Type information is sent to slave computer.

Claims (8)

1. a kind of unlimited printer of intelligence, it is characterised in that:Including moving trolley, print module is provided in the moving trolley , and the control module (11) for controlling the moving trolley and printing drive module (12) and its printing drive module.
2. the unlimited printer of a kind of intelligence according to claim 1, it is characterised in that:The moving trolley includes shell (6), " ten " font is provided with high-precision omni-directional wheel group A (7) and omni-directional wheel group B (8) below the shell (6), it is described complete It respectively includes being connect by axle (5) between two identical omni-directional wheels (1) and omni-directional wheel to wheel group A (7) and omni-directional wheel group B (8), institute It states omni-directional wheel group A (7) and the wheel hub (101) of omni-directional wheel group B (8) is of different sizes that two axles (5) is made to be located at different horizontal planes, The omni-directional wheel group A (7) is driven by driving motor A (9), and the omni-directional wheel group B (8) is driven by driving motor B (10), the drive Dynamic motor A (9) and driving motor B (10) link control module (11).
3. the unlimited printer of a kind of intelligence according to claim 2, it is characterised in that:The omni-directional wheel (1) includes wheel hub (101), it is provided with supporting rack (103) on wheel hub (101) excircle, support frame as described above is provided with driven wheel on (103) (102), the rotation direction of the driven wheel (102) is vertical with the rotation direction of the wheel hub (101), and the wheel hub (101) is outside 3 row's driven wheels (102) are provided on circumference altogether, driven wheel (102) surface is provided with line along driven wheel (102) direction of motion Road (106).
4. the unlimited printer of a kind of intelligence according to claim 3, it is characterised in that:The radius r of the wheel hub (101) and The number n=24 for often arranging driven wheel (102) on driven wheel makes formulaIn X >=6mm when, often arrange driven 24 driven wheels (102) are set on wheel, and wherein X indicates the length of driven wheel;
The radius r of the wheel hub (101) and the number n=24 for often arranging driven wheel (102) on driven wheel make formulaIn X < 6mm when, often arranging the number of driven wheel (102) on driven wheel isAnd n takes Maximum positive integer.
5. the unlimited printer of a kind of intelligence according to claim 3, it is characterised in that:Support frame as described above (103) and wheel hub (101) it is integrally formed;Support frame as described above (103) is integrally formed with support shaft (104), driven wheel (102) setting In support shaft (104), the length for being smaller than driven wheel (102) between the support shaft (104) makes driven wheel (102) it fixes and does not fall out;The wheel hub (101) and supporting rack (103) are plastic material, and driven wheel (102) is that elasticity is moulded Material.
6. the unlimited printer of a kind of intelligence according to claim 1, it is characterised in that:It is provided in the moving trolley anti- Inductor (13) is hit, for preventing the moving trolley and barrier from colliding, the anticollision inductor (13) and control mould Block (11) connects.
7. the unlimited printer of a kind of intelligence according to claim 1, it is characterised in that:Unlimited printer further includes remotely controlling End processed;Communication module is additionally provided in moving trolley, the control being used for transmission between the remote control terminal and control module (11) Signal.
8. the unlimited printer of a kind of intelligence according to claim 1, it is characterised in that:It is additionally provided in the moving trolley The driving device (14) of vacuum cup (15) and vacuum cup, enables moving trolley to be moved on metope, the vacuum cup Driving device (14) is connect with control module (11).
CN201721874531.9U 2017-12-28 2017-12-28 A kind of unlimited printer of intelligence Active CN207790060U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107933120A (en) * 2017-12-28 2018-04-20 内江师范学院 A kind of unlimited printer of intelligence

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107933120A (en) * 2017-12-28 2018-04-20 内江师范学院 A kind of unlimited printer of intelligence

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