CN110802952B

CN110802952B - Braille printing equipment

Info

Publication number: CN110802952B
Application number: CN201911215768.XA
Authority: CN
Inventors: 彭赛钰
Original assignee: Yiwu Taiwei Electronic Technology Co Ltd
Current assignee: Youbiao Shanghai Printing Co ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-11-06
Anticipated expiration: 2039-12-02
Also published as: JP6826259B1; JP2021089409A; CN110802952A

Abstract

The invention discloses a braille printing device, which comprises a device main body, wherein a translation groove with an upward opening is arranged in the device main body, a clamping device is arranged in the translation groove, a character-dotting plate is clamped in the clamping device, paper is pasted on the upper end surface of the character-dotting plate, a driving device is arranged in the inner wall of the rear side of the translation groove, a translation screw rod in the driving device is connected with a translation plate in the clamping device in a threaded manner, the translation plate is arranged in the translation groove in a left-right sliding manner, and the feed screw in the driving device is in threaded connection with the feed plate in the clamping device, so that the braille printing machine can automatically print braille on paper in multiple rows and multiple columns, improves the automation degree, saves manual labor, and the working stroke for printing two braille letters is short, so that the time spent on the stroke can be saved, and the printing efficiency can be improved.

Description

Braille printing equipment

Technical Field

The invention relates to the field of typewriting and printing, in particular to braille printing equipment.

Background

Braille, also called braille, raised letters, is a character which is specially designed for the blind and is sensed by touch, generally, the braille of each square is composed of six points, the braille is composed by making different combinations of salient points on paper through a braille plate, a braille machine and the like, the working stroke between two braille points on the braille plate by the existing braille machine is long, the time is long, and therefore the braille making efficiency is not high.

Disclosure of Invention

The technical problem is as follows:

the existing braille machine has long working stroke between two braille points on the braille plate and low manufacturing efficiency.

In order to solve the problems, the Braille printing equipment is designed in the embodiment, the Braille printing equipment comprises a device main body, wherein a translation groove with an upward opening is arranged in the device main body, a clamping device is arranged in the translation groove, a Braille plate is clamped in the clamping device, paper is pasted on the upper end surface of the Braille plate, a driving device is arranged in the inner wall of the rear side of the translation groove, a translation screw in the driving device is in threaded connection with the translation plate in the clamping device, the translation plate slides leftwards and rightwards and is arranged in the translation groove, a feeding screw in the driving device is in threaded connection with a feeding plate in the clamping device, a feeding groove with an upward opening is formed in the translation plate in a front-back penetrating manner, the feeding plate is arranged in the front-back sliding manner, the Braille plate is clamped in the feeding plate, the driving device drives the feeding plate to slide forwards and backwards through the feeding screw, and then drive braille board and paper slip from beginning to end, drive arrangement passes through translation screw drive the translation board horizontal slip, and then drive the feed plate braille board and paper horizontal slip, drive arrangement with the clamping device upside is equipped with rolling device, the rolling is equipped with the roll board in the rolling device, and the roll board lower extreme supports on the paper, be equipped with eight pneumatic means in the roll board, the rolling device drive the roll board rotates and drives eight pneumatic means prints the braille according to the order on the paper, it is equipped with six braille poles to slide in the pneumatic means, and pneumatic means controls six through pneumatic transmission the flexible state of braille pole makes six the braille pole can print out the braille of different combinations on the paper. Beneficially, clamping device includes the ascending recess that locates in the feeding plate of opening, bilateral symmetry is equipped with the grip block in the recess, the dot word board centre gripping in between the grip block, the grip block is kept away from dot word board one end with link firmly respectively between the recess left and right sides inner wall grip spring, under grip spring's elasticity, the grip block presss from both sides tightly the dot word board.

Beneficially, the driving device comprises a transmission cavity arranged in the inner wall of the rear side of the translation groove, a driving sprocket is rotatably arranged in the transmission cavity, a power shaft is fixedly connected in the driving sprocket, a feeding motor is fixedly arranged in the inner wall of the rear side of the transmission cavity, the rear end of the power shaft is in power connection with the feeding motor, the driving sprocket is symmetrically and rotatably arranged on the left side and the right side, a driven sprocket is connected with a chain between the driving sprocket and the driven sprocket, a symmetrical rotating shaft is fixedly connected at the front end of the driven sprocket, a symmetrical rotating wheel is fixedly connected at the front end of the symmetrical rotating shaft, a sliding wheel is slidably and rotatably arranged between the symmetrical rotating wheels, a communication groove is communicated between the transmission cavity and the translation groove, the rear end of the feeding screw penetrates through the communication groove and is fixedly connected with the sliding wheel, the feeding motor is started, and the driving sprocket is driven, and then the chain drives the driven chain wheel to rotate, and further drives the symmetrical rotating wheels to rotate through the symmetrical rotating shafts, when the sliding wheels are connected with the symmetrical rotating wheels, the symmetrical rotating wheels drive the sliding wheels to rotate, and further drives the feeding plate to slide forwards through the feeding screw rods.

Beneficially, a driving gear is fixedly connected to the front end of the power shaft, a driven gear is engaged with the lower end of the driving gear, a fixed shaft is fixedly connected to the inside of the driven gear, a driving bevel gear is fixedly connected to the rear end of the fixed shaft, a driven bevel gear is engaged with the left end of the driving bevel gear, a transmission shaft is fixedly connected to the inside of the driven bevel gear, driving pulleys are symmetrically arranged at the left end and the right end of the driven bevel gear, the left end and the right end of the transmission shaft are respectively and fixedly connected to the driving pulleys at the left side and the right side, belt grooves are symmetrically arranged in the inner walls at the left side and the right side of the translation groove, the inner wall at the rear side of the belt grooves is communicated with the transmission cavity, driven pulleys are rotatably arranged in the belt grooves, a connecting belt is connected between the driven pulleys, the left end and, and then the driven gear is driven to rotate, the driving bevel gear is driven to rotate through the fixed shaft, the driven bevel gear is driven to rotate, the driving belt wheel is driven to rotate through the transmission shaft, the driven belt wheel is driven to rotate through the connecting belt, the translation plate is driven to slide left and right through the translation screw rod, after the feeding plate is fed forwards to a station, the feeding motor is started in a reverse direction, the translation plate is driven to move in a reverse direction, the sliding wheel is driven to move in a reverse direction until the sliding wheel is connected with the symmetrical rotating wheel on the other side, and the rotation direction of the symmetrical rotating wheel connected with the sliding wheel is opposite at the moment due to the reverse start of the feeding motor, so that the sliding wheel can be continuously driven to rotate and drive the feeding plate to feed forwards through the feeding screw rod.

Beneficially, the rolling device is including locating cavity in the side inner wall of transmission chamber upside, the cavity internal rotation is equipped with the runner, linked firmly the connecting axle in the runner, the cavity rear side inner wall internal fixation has driving motor, connecting axle rear end power connect in driving motor, what link up around in the roll board is equipped with logical groove, it is equipped with the backup pad to lead to the groove, the backup pad link firmly in lead to on the circular inner wall of groove, the connecting axle front end connect in the backup pad, start driving motor, and then through the connecting axle drives the backup pad with the roll board rotates.

Preferably, eight induction blocks are fixedly arranged in the circular end face of the rotating wheel in an annular array mode, the eight induction blocks are electrically connected to the eight pneumatic devices respectively, a detection probe is fixedly arranged on the inner wall of the lower side of the cavity, and when the detection probe is right opposite to the induction blocks, the pneumatic devices are started correspondingly.

Beneficially, the pneumatic device comprises an air pump fixedly arranged in the support plate, eight connecting rods are fixedly connected between the rolling plate and the support plate, air guide cavities are arranged in the connecting rods and communicated with the air pump, sealing holes with openings deviating from the air pump are distributed in the connecting rods in an array manner, the braille rods are slidably arranged in the sealing holes, connecting pipes are connected between the sealing holes and the air guide cavities, air channels are arranged in the connecting pipes in a penetrating manner and communicated with the sealing holes and the air guide cavities, control valves are fixedly arranged in the air channels, when the detection probe is opposite to the sensing block on the lower side, the connecting rod on the lower side is downward and is abutted against a paper surface, and according to braille to be printed, six corresponding control valves in the connecting rods are correspondingly electrified and communicated with the air channels, starting the air pump, ventilating the air guide cavity, the air channel and the sealing hole, pushing the braille rod to slide out of the sealing hole, dotting corresponding braille on paper, starting the air pump reversely and withdrawing the braille rod, continuing rotating the rolling plate at the moment, enabling the next connecting rod to be abutted against the paper surface for braille, wherein the excircle distance of the rolling plate between two adjacent connecting rods is the word distance between the two braille.

The invention has the beneficial effects that: the invention can automatically print braille on paper in multiple rows and multiple columns, improves the automation degree, saves the manual labor force, has short working stroke between the two braille prints, and can save the time spent on the stroke, thereby improving the printing efficiency.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view showing an overall structure of a Braille printing apparatus according to the present invention;

FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;

FIG. 3 is an enlarged schematic view of "B" of FIG. 1;

FIG. 4 is an enlarged schematic view of "C" of FIG. 2;

FIG. 5 is an enlarged schematic view of "D" of FIG. 2;

FIG. 6 is a schematic view of the structure in the direction "E-E" of FIG. 3;

FIG. 7 is a schematic view of the structure in the direction "F-F" of FIG. 4;

FIG. 8 is a schematic view of the structure in the direction "G-G" of FIG. 5;

FIG. 9 is a schematic view of the structure in the direction "H-H" of FIG. 5;

FIG. 10 is a schematic view of the structure in the direction "I-I" of FIG. 8.

Detailed Description

The invention will now be described in detail with reference to fig. 1-10, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The Braille printing equipment comprises a device body 11, wherein a translation groove 12 with an upward opening is arranged in the device body 11, a clamping device 102 is arranged in the translation groove 12, a Braille plate 26 is clamped in the clamping device 102, paper is pasted on the upper end surface of the Braille plate 26, a driving device 100 is arranged in the inner wall of the rear side of the translation groove 12, a translation screw 14 in the driving device 100 is in threaded connection with a translation plate 15 in the clamping device 102, the translation plate 15 is arranged in the translation groove 12 in a left-right sliding manner, a feed screw 16 in the driving device 100 is in threaded connection with a feed plate 13 in the clamping device 102, a feed groove 17 with an upward opening is formed in the translation plate 15 in a front-back penetrating manner, the feed plate 13 is arranged in the feed groove 17 in a front-back sliding manner, the Braille plate 26 is clamped in the feed plate 13, and the driving device 100 drives the feed plate 13 to slide back and forth through the feed screw 16, thereby driving the dot-shaped plate 26 and the paper to slide back and forth, the driving device 100 drives the translation plate 15 to slide left and right through the translation screw 14, thereby driving the feeding plate 13, the dot-shaped plate 26 and the paper to slide left and right, a rolling device 101 is arranged on the upper side of the driving device 100 and the clamping device 102, a rolling plate 27 is arranged in the rolling device 101 in a rolling way, the lower end of the rolling plate 27 is pressed against the paper, eight pneumatic devices 103 are arranged in the rolling plate 27, the rolling device 101 drives the rolling plate 27 to rotate and drives the eight pneumatic devices 103 to sequentially print dots on paper, six dot rods 32 are slidably arranged in the pneumatic devices 103, and the pneumatic device 103 controls the telescopic state of the six braille rods 32 through pneumatic transmission, so that different combinations of braille can be printed on paper by the six braille rods 32.

According to an embodiment, the holding device 102 is described in detail below, the holding device 102 includes a groove 23 with an upward opening and disposed in the feeding plate 13, holding plates 18 are disposed in the groove 23 in a bilateral symmetry manner, the dot plate 26 is held between the holding plates 18, holding springs 22 are respectively fixedly connected between one end of the holding plate 18, which is far away from the dot plate 26, and the inner walls of the left and right sides of the groove 23, and the holding plates 18 clamp the dot plate 26 under the elastic force of the holding springs 22.

According to the embodiment, the driving device 100 is described in detail below, the driving device 100 includes a transmission cavity 55 disposed in the inner wall of the rear side of the translation groove 12, a driving sprocket 47 is disposed in the transmission cavity 55 in a rotating manner, a power shaft 48 is fixedly connected in the driving sprocket 47, a feeding motor 49 is fixedly disposed in the inner wall of the rear side of the transmission cavity 55, the rear end of the power shaft 48 is in power connection with the feeding motor 49, driven sprockets 56 are symmetrically and rotatably disposed on the left and right sides of the driving sprocket 47, a chain 46 is connected between the driven sprockets 56 and the driving sprocket 47, a symmetrical rotating shaft 58 is fixedly connected at the front end of the driven sprocket 56, symmetrical rotating wheels 57 are fixedly connected at the front end of the symmetrical rotating shaft 58, sliding wheels 44 are disposed between the symmetrical rotating wheels 57 in a sliding manner and rotating manner, a communication groove 43 is disposed between the transmission cavity 55 and the translation groove 12 in a communicating manner, the rear end of the feeding screw 16 passes through the communication groove, the feeding motor 49 is started, the driving sprocket 47 is driven to rotate by the power shaft 48, the driven sprocket 56 is driven to rotate by the chain 46, the symmetrical rotating wheel 57 is driven to rotate by the symmetrical rotating shaft 58, when the sliding wheel 44 is connected with the symmetrical rotating wheel 57, the symmetrical rotating wheel 57 drives the sliding wheel 44 to rotate, and the feeding plate 13 is driven to slide forwards by the feeding screw 16, because the sliding wheel 44 is connected with the symmetrical rotating wheel 57, the sliding wheel 44 can continuously slide towards the symmetrical rotating wheel 57, and at this time, the circumferential end surfaces of the sliding wheel 44 and the symmetrical rotating wheel 57 are not in contact, so that the sliding wheel 44 and the symmetrical rotating wheel 57 are prevented from colliding.

Beneficially, a driving gear 45 is fixedly connected to the front end of the power shaft 48, a driven gear 53 is engaged with the lower end of the driving gear 45, a fixed shaft 54 is fixedly connected to the inside of the driven gear 53, a driving bevel gear 52 is fixedly connected to the rear end of the fixed shaft 54, a driven bevel gear 51 is engaged with the left end of the driving bevel gear 52, a transmission shaft 50 is fixedly connected to the inside of the driven bevel gear 51, driving pulleys 59 are symmetrically arranged at the left end and the right end of the driven bevel gear 51, the left end and the right end of the transmission shaft 50 are respectively fixedly connected to the driving pulleys 59 at the left side and the right side, belt grooves 21 are symmetrically arranged in the inner walls at the left side and the right side of the translation groove 12, the inner wall at the rear side of the belt groove 21 is communicated with the transmission cavity 55, a driven pulley 19 is rotatably arranged in the belt groove 21, a connecting belt 20 is, the feeding motor 49 is started, the driving gear 45 is driven to rotate through the power shaft 48, the driven gear 53 is driven to rotate, the driving bevel gear 52 is driven to rotate through the fixed shaft 54, the driven bevel gear 51 is driven to rotate, the driving pulley 59 is driven to rotate through the transmission shaft 50, the driven pulley 19 is driven to rotate through the connecting belt 20, the translation plate 15 is driven to slide left and right through the translation screw 14, after the feeding plate 13 is fed forward for one station, the feeding motor 49 is started in reverse direction, the translation plate 15 is driven to move in reverse direction, the sliding wheel 44 is driven to move in reverse direction until the sliding wheel 44 is connected with the symmetrical rotating wheel 57 on the other side, and the rotating direction of the symmetrical rotating wheel 57 connected with the sliding wheel 44 is opposite at the moment due to the reverse start of the feeding motor 49, thereby, the sliding wheel 44 can be driven to rotate continuously and the feeding plate 13 can be driven to feed forwards through the feeding screw 16.

According to the embodiment, the rolling device 101 will be described in detail below, the rolling device 101 includes a cavity 41 formed in the inner wall of the upper side of the transmission cavity 55, a rotating wheel 39 is rotatably disposed in the cavity 41, a connecting shaft 29 is fixedly connected to the rotating wheel 39, a driving motor 42 is fixedly disposed in the inner wall of the rear side of the cavity 41, the rear end of the connecting shaft 29 is in power connection with the driving motor 42, a through groove 25 is formed in the rolling plate 27 in a front-back penetrating manner, a supporting plate 28 is disposed in the through groove 25, the supporting plate 28 is fixedly connected to the circular inner wall of the through groove 25, the front end of the connecting shaft 29 is fixedly connected to the supporting plate 28, the driving motor 42 is started, and the supporting plate 28 is driven by the connecting shaft 29 to.

Advantageously, eight sensing blocks 40 are fixedly arranged in the circular end face of the rotating wheel 39 in an annular array, the eight sensing blocks 40 are electrically connected to the eight pneumatic devices 103 respectively, a detection probe 38 is fixedly arranged on the inner wall of the lower side of the cavity 41, and when the detection probe 38 is opposite to the sensing blocks 40, the corresponding pneumatic device 103 is started.

According to the embodiment, the pneumatic device 103 will be described in detail below, the pneumatic device 103 includes an air pump 24 fixedly disposed in the support plate 28, eight connecting rods 36 are fixedly connected between the rolling plate 27 and the support plate 28, an air guide cavity 35 is disposed in each connecting rod 36, the air guide cavity 35 is communicated with the air pump 24, sealing holes 31 having openings deviating from the air pump 24 are disposed in the connecting rods 36 in an array manner, the braille rods 32 are slidably disposed in the sealing holes 31, a connecting pipe 37 is connected between the sealing holes 31 and the air guide cavity 35, an air passage 33 is penetratingly disposed in the connecting pipe 37, the air passage 33 communicates the sealing holes 31 and the air guide cavity 35, a control valve 34 is fixedly disposed in the air passage 33, when the detecting probe 38 faces the sensing block 40 on the lower side, the connecting rod 36 on the lower side faces downward and abuts against the paper surface, according to the braille that will be printed with the braille, it is corresponding six in the connecting rod 36 control valve 34 carries out corresponding circular telegram and communicates gas passage 33, starts this moment air pump 24, and then to gas guide chamber 35 gas passage 33 and ventilate in the sealed hole 31, and then promote braille pole 32 roll-off in the sealed hole 31, and then corresponding braille under the dot on the paper, reverse start air pump 24 and withdraw braille pole 32, at this moment the roll board 27 continues to rotate, and then makes next connecting rod 36 support and carry out the braille on the paper, between two adjacent connecting rods 36 the excircle distance of roll board 27 is the word distance between two braille.

The following describes in detail the use steps of a braille printing device herein with reference to fig. 1 to 10:

initially, the feeding plate 13 is located at the rear limit position in the feeding slot 17, and the translation plate 15 is located at the left limit position, and the rolling plate 27 and the dot plate 26 are just not in contact, and the sliding wheel 44 and the left symmetrical rotating wheel 57 are just disconnected.

When the device is used, paper is pasted on the upper end surface of the dot-character board 26, the feeding motor 49 and the driving motor 42 are started, at this time, the feeding motor 49 drives the driving gear 45 to rotate through the power shaft 48, and then drives the driven gear 53 to rotate, and then drives the driving bevel gear 52 to rotate through the fixed shaft 54, and then drives the driven bevel gear 51 to rotate, and then drives the driving pulley 59 to rotate through the transmission shaft 50, and then drives the driven pulley 19 to rotate through the connection belt 20, and then drives the translation plate 15 to slide rightwards through the translation screw 14, at this time, the paper abuts against the lower end of the rolling plate 27, at the same time, the driving motor 42 drives the support plate 28 to rotate through the connection shaft 29, and then drives the rolling plate 27 to rotate, when the detection probe 38 is opposite to the induction block 40 on the lower side, at this time, the connecting rod 36 on the lower side of the paper faces downwards and abuts against the upper, at this moment, the air pump 24 is started, air is further introduced into the air guide cavity 35, the air channel 33 and the sealing hole 31, the braille rod 32 is further pushed to slide out of the sealing hole 31, corresponding braille is then dotted on paper, the air pump 24 is started reversely and the braille rod 32 is retracted, at this moment, the rolling plate 27 continues to rotate, then the next connecting rod 36 is abutted against the paper surface for braille, and the excircle distance of the rolling plate 27 between two adjacent connecting rods 36 is the word distance between two braille.

When the translation plate 15 slides to the right limit position, the braille plate 26 is disconnected from the rolling plate 27, at this time, the sliding wheel 44 is connected with the symmetrical rotating wheel 57 on the right side, the feeding motor 49 drives the driving sprocket 47 to rotate through the power shaft 48, further drives the driven sprocket 56 to rotate through the chain 46, further drives the symmetrical rotating wheel 57 to rotate through the symmetrical rotating shaft 58, further drives the sliding wheel 44 to rotate, further drives the feeding plate 13 to slide forward through the feeding screw 16, further drives the braille plate 26 to slide forward for a line spacing with paper, because the sliding wheel 44 is connected with the symmetrical rotating wheel 57, the sliding wheel 44 continues to slide close to the symmetrical rotating wheel 57, at this time, the sliding wheel 44 is not in contact with the circumferential end face of the symmetrical rotating wheel 57, the sliding wheel 44 is prevented from colliding with the symmetrical rotating wheel 57, at this time, the feeding motor 49 is driven reversely, and then braille printing can be started.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. A braille printing apparatus includes a device main body, characterized in that: a translation groove with an upward opening is formed in the device main body, a clamping device is arranged in the translation groove, a character-dotting plate is clamped in the clamping device, and paper pasting paper is pasted on the upper end face of the character-dotting plate; a driving device is arranged in the inner wall of the rear side of the translation groove, a translation screw in the driving device is in threaded connection with a translation plate in the clamping device, the translation plate is arranged in the translation groove in a left-right sliding manner, a feed screw in the driving device is in threaded connection with a feed plate in the clamping device, a feed groove with an upward opening is formed in the translation plate in a front-back through manner, the feed plate is arranged in the feed groove in a front-back sliding manner, and the dot plate is clamped in the feed plate; the upper sides of the driving device and the clamping device are provided with rolling devices, rolling plates are arranged in the rolling devices in a rolling mode, and the lower ends of the rolling plates are abutted against paper; eight pneumatic devices are arranged in the rolling plate, and the rolling device drives the rolling plate to rotate and drives the eight pneumatic devices to sequentially print dots on paper; six braille rods are arranged in the pneumatic device in a sliding mode, the pneumatic device controls the six telescopic states of the braille rods through pneumatic transmission, and the six braille rods can print braille of different combinations on paper in a braille mode.

2. A braille printing device according to claim 1, characterized in that: the clamping device comprises a groove with an upward opening, the groove is formed in the feeding plate, clamping plates are symmetrically arranged in the groove in a bilateral mode, the dot-shaped plates are clamped between the clamping plates, and clamping springs are fixedly connected between one end of each dot-shaped plate and the inner walls of the left side and the right side of the groove respectively.

3. A braille printing device according to claim 1, characterized in that: the driving device comprises a transmission cavity arranged in the inner wall of the rear side of the translation groove, a driving chain wheel is rotatably arranged in the transmission cavity, a power shaft is fixedly connected in the driving chain wheel, a feeding motor is fixedly arranged in the inner wall of the rear side of the transmission cavity, and the rear end of the power shaft is in power connection with the feeding motor; the left side and the right side of the driving chain wheel are symmetrically provided with driven chain wheels in a rotating mode, a chain is connected between the driven chain wheels and the driving chain wheel, the front end of each driven chain wheel is fixedly connected with a symmetrical rotating shaft, and the front end of each symmetrical rotating shaft is fixedly connected with a symmetrical rotating wheel; the symmetrical rotating wheels are provided with sliding wheels in a sliding and rotating mode, the transmission cavity and the translation groove are communicated with each other to form a communicating groove, and the rear end of the feed screw penetrates through the communicating groove and is fixedly connected with the sliding wheels.

4. A braille printing device according to claim 3, characterized in that: the front end of the power shaft is fixedly connected with a driving gear, the lower end of the driving gear is meshed with a driven gear, a fixed shaft is fixedly connected in the driven gear, a driving bevel gear is fixedly connected at the rear end of the fixed shaft, the left end of the driving bevel gear is meshed with a driven bevel gear, a transmission shaft is fixedly connected in the driven bevel gear, driving belt wheels are symmetrically arranged at the left end and the right end of the driven bevel gear, and the left end and the right end of the transmission shaft are respectively fixedly connected to the driving belt wheels at the left; the belt groove is symmetrically arranged in the inner walls of the left side and the right side of the translation groove, the inner wall of the rear side of the belt groove is communicated with the transmission cavity, a driven belt wheel is arranged in the belt groove in a rotating mode, a connecting belt is connected between the driven belt wheel and the driving belt wheel, and the left end and the right end of the translation screw rod are fixedly connected to the driven belt wheels on the two sides respectively.

5. A braille printing device according to claim 1, characterized in that: the rolling device comprises a cavity arranged in the inner wall of the upper side of the transmission cavity, a rotating wheel is rotatably arranged in the cavity, a connecting shaft is fixedly connected in the rotating wheel, a driving motor is fixedly arranged in the inner wall of the rear side of the cavity, and the rear end of the connecting shaft is in power connection with the driving motor; the rolling plate is internally provided with a through groove which is communicated with the front and the back, the through groove is provided with a supporting plate, the supporting plate is fixedly connected to the circular inner wall of the through groove, and the front end of the connecting shaft is fixedly connected to the supporting plate.

6. A braille printing device according to claim 5, characterized in that: eight induction blocks are fixedly arranged in the circular end face of the rotating wheel in an annular array mode, the eight induction blocks are electrically connected to the eight pneumatic devices respectively, and a detection probe is fixedly arranged on the inner wall of the lower side of the cavity.

7. A braille printing device according to claim 6, characterized in that: the pneumatic device comprises an air pump fixedly arranged in the supporting plate, eight connecting rods are fixedly connected between the rolling plate and the supporting plate, air guide cavities are arranged in the connecting rods, and the air guide cavities are communicated with the air pump; the air pump is characterized in that sealing holes with openings deviating from the air pump are formed in the connecting rod in an array manner, the dot-shaped rod is arranged in the sealing holes in a sliding manner, a connecting pipe is connected between the sealing holes and the air guide cavity, an air channel is arranged in the connecting pipe in a penetrating manner and is communicated with the sealing holes and the air guide cavity, and a control valve is fixedly arranged in the air channel.