CN115284752B

CN115284752B - Thermosensitive receipt printer

Info

Publication number: CN115284752B
Application number: CN202210979751.7A
Authority: CN
Inventors: 王丽辉; 刘贯伟; 赵荣伟; 江浩然; 张云峰
Original assignee: Cashway Technology Co Ltd
Current assignee: Cashway Technology Co Ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2023-07-14
Anticipated expiration: 2042-08-16
Also published as: CN115284752A

Abstract

The invention provides a thermosensitive strip printer, which comprises a sheet metal bracket module, a main frame, a printing module, a cutter module, a rotating shaft, a paper accommodating module, a paper feeding detection module, a tension adjusting module and a circuit board, wherein the sheet metal bracket module is arranged on the main frame; the printing module is fixed on the front surface of the main frame; the circuit board is fixed on the back of the main frame; the circuit board is fixed in a closed space formed by the main frame and the paper feeding detection module; the rotating shaft is arranged below the front surface of the main frame; the printing module, the cutter module and the paper accommodating module are arranged in parallel. The thermosensitive strip-based printer can realize full-cutting and half-cutting functions, can be compatible with strip-based papers with different outer diameters, can be compatible with printing heads with different specifications, has a modularized structure, is convenient to maintain, and can realize precise high-speed printing.

Description

Thermosensitive receipt printer

Technical Field

The invention relates to the technical field of printers, in particular to a thermosensitive receipt printer.

Background

The thermal receipt printer is widely applied to a bank ATM and a hospital registering machine, and along with the increase of application scenes, the receipt printer is required to realize multiple functions, such as: full-cutting and half-cutting functions; paper-spitting, paper-containing and paper-withdrawing functions; and also to meet the specifications of various papers on the market, such as: the width of the receipt paper is different, and the common width is 48mm, 56mm, 70mm, 76mm, 80mm and 82.5mm; different inner diameters of the paper mandrels of the receipt paper are 25.4mm and 18mm in common; different paper roll outer diameters, 150mm, 180mm, 200mm, 220mm, 250mm, and maximum paper roll outer diameter of 300mm; different kinds of paper can be divided into continuous paper and black label paper; according to different positions of the black marks, the black marks can be divided into a front black mark (a thermosensitive coating layer) and a back black mark (a non-thermosensitive coating layer), a left black mark, a middle black mark and a right black mark; different print widths, e.g. 72mm and 80mm print widths, are also required to be met; but also to meet the demands of high-speed printing, for example: the conventional printing speed is 150mm/s and can reach 250mm/s at maximum.

Aiming at the application scenes and the function demands, the conventional receipt printer in the market can only meet part of the demands or receipt printer manufacturers push out receipt printers of different series with various specifications to meet the changeable application demands in the market, so that the receipt printer of each specification needs to be independently opened, the production cost is undoubtedly high, and the economic pressure is not small for the manufacturers.

Disclosure of Invention

Based on the above, in order to meet different application scenes and various functional requirements in the market and solve the problems of production cost and difficult paper jam maintenance of manufacturers, the invention designs a multifunctional, adjustable, configurable, modularized structure, easy-to-maintain and precise high-speed printing thermosensitive receipt printer.

In a first aspect, an embodiment of the present invention provides a thermal receipt printer, which is characterized in that the thermal receipt printer includes: the printing device comprises a sheet metal bracket module 100, a main frame 200, a printing module 300, a cutter module 400, a rotating shaft 500, a paper accommodating module 600, a paper feeding detection module 700, a tension adjusting module 800 and a circuit board 900; the printing module 300 is fixed to the front surface of the main frame 200; the circuit board 900 is fixed to the back surface of the main frame 200; the circuit board 900 is fixed in the enclosed space formed by the main frame 200 and the paper feeding detection module 700; the rotating shaft 500 is disposed below the front surface of the main frame 200; the printing module 300, the cutter module 400 and the paper accommodating module 600 are arranged in parallel; the cutter module 400 is rotationally connected with the main frame 200 through a rotating shaft 500, and square holes on two sides of the cutter module 400 are protruded to form buckle locking through inner sides of upper wings of the main frame 200; the paper accommodating module 600 is locked and fixed by the conical counter bores on the two sides and the threaded holes on the two sides of the cutter module 400; the tension adjusting module 800 is fixedly locked on the back panel of the paper feeding detecting module 700 through a convex hull positioning screw; the main frame 200 and the paper feeding detection module 700 are fixedly connected with the sheet metal bracket module 100 through 2 screws respectively.

Further, the sheet metal bracket module 100 includes: sheet metal base 110, sheet metal side plate one 120, sheet metal side plate two 130, mandrel 140; the mandrel 140 comprises a first mandrel 141 and a second mandrel 142, and the first mandrel 141 and the second mandrel 142 are assembled together through a D-shaped shaft; the height from the center of the mandrel 140 to the upper surface of the sheet metal base 110 is greater than 150mm; the distance between the first sheet metal side plate 120 and the second sheet metal side plate 130 is 84.5mm.

Further, the printing module 300 is composed of a stepper motor 310, a first gear system 320, a fixed adjusting sheet 330, a printing rubber roller 340, a printing head 350, a pressure spring 360 and a printing frame 370; the fixed tab 330 is machined from a slow wire cut electrical discharge machining.

Further, the fixing adjusting piece 330 is respectively connected with a flange bearing at one end of the printing rubber roller 340 and one end of the rotating shaft of the printing head 350, and is used for precisely controlling the relative position between the printing head 350 and the printing rubber roller 340, thereby ensuring the accuracy of the tangential position of the heating wire of the printing head 350 and the printing rubber roller 340.

Further, the cutter module 400 is composed of a first small dc motor 410, a worm 420, a bevel gear 430, a two-way switch 440, a movable blade 450, a fixed blade 460, and a guide cover 470; the fan-shaped convex portion on one side of the bevel gear 430 is engaged with the two-way switch 440.

Further, the rotation shaft 500 simultaneously penetrates the lower wing of the main frame 200 and the lower side of the cutter module 400; the main frame 200 is fixedly connected with the sheet metal bracket module 100 through screws, the cutter module 400 can rotate around the rotating shaft 500, and after reaching a preset angle, the bottom surface of the cutter module 400 reaches the inclined surface of the sheet metal bracket module 100, and the rotation is stopped; the fastened state is locked by the upper wing inner side protrusions of the main frame 200 and the upper wing square hole buckles 480 at both sides of the cutter module 400.

Further, the paper accommodating module 600 is composed of a second small-sized dc motor 610, a second gear transmission system 620, a driving rubber roller 630, a driven wheel 640, a frame body 650, a housing 660, a movable cover 670, and a paper outlet 680; the frame body 650 has a concave shape, and an inner space is formed between the concave portion and the cutter module 400; the movable cover 670 can be pulled out upwards for removing the jam; the paper outlet 680 is mounted on the cutter module 400, and a spare connection hole for mounting the paper outlet 680 is reserved on the side surface of the cutter module 400.

Further, the paper feeding detection module 700 is composed of a back shell 710 and a paper feeding detection sensor 720; 10 hole sites are arranged in the paper feeding channel of the back shell 710; the paper feeding detection sensor 720 is fixed in any hole site through a buckle and is used for detecting the positions of the front black mark, the back black mark, the left black mark, the middle black mark and the right black mark.

Further, the tension adjusting module 800 is composed of a sheet metal frame 810, a paper guide shaft 820, a tension spring 830, a left adjusting plate 840, a right adjusting plate 850, a shaft sleeve 860 and a screw 870; the upper surface of panel beating frame 810 is equipped with laser-beam mark 8101 for mark the position of different credential paper both sides edges.

The embodiment of the invention has the following beneficial effects:

Additional features and advantages of the invention will be set forth in the description which follows, or in part will be obvious from the description, or may be learned by practice of the invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1: the structure of the thermosensitive receipt printer is composed into a schematic diagram;

fig. 2: the sheet metal bracket module structure is schematically shown;

fig. 3: a mandrel schematic diagram;

fig. 4: the main frame, the printing module and the circuit board are assembled in a schematic diagram;

fig. 5: the printing module structure is composed into a schematic diagram;

fig. 6: the structure of the cutter module is schematically shown;

fig. 7: the paper accommodating module structure is composed into a schematic diagram;

fig. 8: the paper feeding detection module structure is composed into a schematic diagram;

fig. 9: the tension adjusting module structure is composed into a schematic diagram;

fig. 10: a schematic diagram of the separation state of the printing module and the cutter module;

fig. 11: a schematic diagram of the buckling hole position of the cutter module;

fig. 12: a hole position diagram below the paper feeding detection module;

fig. 13: tension adjustment module position adjustment sign schematic diagram.

Icon: 100 sheet metal bracket modules; 200 main frames; 300 printing module; 400 cutter modules; a 500-axis rotation; 600 paper accommodating modules; 700 paper feeding detection module; 800 tension adjusting module; 900 circuit board (in 700 paper-in detecting module inner space); 110 sheet metal base; 120 side sheet metal I; 130 side sheet metal two; 140 mandrels; 141 mandrel one; 142 mandrel two; 310 stepper motor; 320 a first gear system; 330 fixing the tab; 340 printing a rubber roller; 350 print head; 360 pressure springs; 370 printing the frame; 410 a first small dc motor; 420 worm; 430 helical gears; 440 bi-directional switch; 450 moving blades; 460 fixing the blade; 470 guide cover plate; 480 upper wing square hole buckles; a second miniature dc motor 610, a second gear train 620; 630 active glue roller; 640 driven wheels; 650 a frame body; 660 a housing; 670 a removable cover; 680 paper outlet; 690 paper-holding channel sensor; 710 back shell, 720 paper-in detection sensor; 810 sheet metal frame; 820 paper guide shaft; a 830 tension spring; 840 left adjustment plate; 850 right adjustment plate; 860 sleeve; 870 screws; a first hole site 721; a second hole site 722; a third hole site 723; a fourth hole location 724; a fifth hole site 725; a sixth hole site 726; a seventh hole site 727; eighth hole site 728; a ninth hole site 729; a tenth hole site 730; laser mark 8101.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The conventional receipt printer in the market can only meet part of requirements or receipt printer manufacturers push out receipt printers of different series of various specifications to meet the changeable application requirements in the market, so that the receipt printer of each specification needs to be independently opened, the production cost is obviously high, and the economic pressure is not small for the manufacturers.

In order to meet different application scenes and various functional requirements in the market and solve the problems of production cost and difficult paper jam maintenance of manufacturers, the invention designs a multifunctional thermosensitive receipt printer which is adjustable, configurable, modularized in structure, easy to maintain and capable of precisely printing at high speed. The structure is applied to the technical scene of receipt printing.

Example 1

The invention provides a thermosensitive receipt printer, as shown in fig. 1, which consists of the following parts: 100 sheet metal support modules, 200 main frames, 300 printing modules, 400 cutter modules, 500 rotating shafts, 600 paper accommodating modules, 700 paper feeding detection modules, 800 tension adjusting modules and 900 circuit boards (located in the inner space of the 700 paper feeding detection modules and not shown in fig. 1).

As shown in fig. 2, 100 sheet metal bracket modules: the device consists of a 110 sheet metal base, a 120 sheet metal side plate I, a 130 sheet metal side plate II and a 140 mandrel part. The height from the center of the 140 mandrel to the upper surface of the 110 sheet metal base is greater than 150mm, the distance between the 120-side sheet metal I and the 130-side sheet metal II is 84.5mm, and the whole sheet metal support module can meet the requirement of 300mm of maximum diameter of strip paper and 48 mm-82.5 mm of width of strip paper.

As shown in fig. 3, the 140 mandrel consists of a 141 mandrel I and a 142 mandrel II, the outer diameter of the 141 mandrel I is 24.8mm, the outer diameter of the 142 mandrel II is 17mm, the inner diameter of the 141 mandrel I and the outer diameter of the 142 mandrel II are assembled by D-type, the elastic protruding points are penetrated axially, and the elastic protruding points are fixed, so that the use of the strip paper with the specification of 25.4mm of the inner diameter of the mandrel can be realized; and the second mandrel 142 is independently used, so that the use of the strip paper with the inner diameter of 18mm of the mandrel can be realized.

As shown in fig. 4, the main frame 200 is the main bearing part of the thermosensitive receipt printer, the printing module 300 is fixed on the front surface of the main frame 200, the circuit board 900 is fixed on the back surface of the main frame 200, the four corners of the main frame 200 are fixedly connected with the paper feeding detection module 700 through tapping screws, and the circuit board 900 is positioned in an internal closed space formed by the main frame 200 and the paper feeding detection module 700; the 500 rotation shaft is arranged below the front surface of the 200 main frame.

As shown in FIG. 5, the printing module 300 is composed of a step motor 310, a first gear transmission system 320, a fixed adjusting sheet 330, a printing rubber roller 340, a printing head 350, a pressure spring 360 and a printing frame 370. The effective printing width of the 340 printing rubber roller is 80mm, and the printing head with 72mm printing width and 80mm printing width can be directly compatible according to requirements. The maximum printing speed of the 350 printing head is 250mm/s, and high-speed printing between 150mm/s and 250mm/s can be realized. The 330 fixed adjusting piece is formed by cutting and processing a slow wire, and the processing precision can be 0.01mm, so that the superposition of the tangent positions of the printing heating wire and the rubber roller is accurately controlled, the precise printing is realized, and the printing quality is well controlled.

As shown in fig. 6, the 400 cutter module is composed of 410 a first small dc motor, 420 a worm, 430 a helical gear, 440 a two-way switch, 450 a movable blade, 460 a fixed blade, 470 a guide cover plate. The fan-shaped bulge on one side of the 430 helical gear is matched with the 440 bidirectional switch, so that the full-cut and half-cut functions can be realized.

Note that: all drawings of the present application do not show components that are irrelevant to the present application.

In fig. 4 and 6, the 500 rotation shaft penetrates through the lower wing of the 200 main frame and the lower part of the 400 cutter module, the 200 main frame is fixedly connected with the 100 sheet metal bracket module through screws, the 400 cutter module can rotate around the 500 rotation shaft, and after reaching a preset angle, the bottom surface of the 400 cutter module reaches the inclined surface of the 100 sheet metal bracket module, and the rotation is stopped; the buckling state is locked by the inner side bulge of the upper wing of the main frame 200 and the upper wing square hole buckles 480 at the two sides of the cutter module 400. As shown in fig. 11.

As shown in FIG. 7, the 600 paper-containing module is composed of 610 a second small DC motor, 620 a second gear transmission system, 630 a driving rubber roller, 640 a driven wheel, 650 a frame body, 660 a casing, 670 a movable cover plate and 680 paper outlets. 650 the frame body is the concave shape, forms an inner space between concave part and the 400 cutter modules, the inner space is as a space that holds paper, also is a space that the paper was passed through to the returning.

670 the removable cover can be pulled out upwards for removing the jam.

After the printing of the strip paper is completed, the 400 cutter module cuts off the printed part and the unprinted part, and the paper head of the printed part is positioned between the 630 driving rubber roller and the 640 driven wheel, so that the functions of paper discharge, paper containing waiting, paper withdrawal and the like are realized according to the requirements. The paper containing function does not affect the printing process in the pulling process; printing of longer receipt paper is achieved. If no paper containing requirement exists, the 680 paper outlet is directly arranged on the 400 cutter module, and a standby connecting hole for installing 680 paper outlet is reserved on the side surface of the 400 cutter module. The printers with paper containing function and the printers without paper containing function in the market are often two different devices, and the printers of the invention use the shared part to the greatest extent, save the die sinking cost of redundant plastic parts and sheet metal parts, and simultaneously reduce the management difficulty caused by a plurality of parts.

As shown in fig. 8, the 700 paper feeding detection module is composed of 710 back shell and 720 paper feeding detection sensor. The total of 10 holes (namely, a first hole 721, a second hole 722, a third hole 723, a fourth hole 724, a fifth hole 725, a sixth hole 726, a seventh hole 727, an eighth hole 728, a ninth hole 729 and a tenth hole 730) are arranged at the left, middle and right positions above and below the back shell paper feeding channel, and the 720 paper feeding detection sensor is fixed in a certain hole through a buckle, so that detection of 6 positions of a front black mark (a thermosensitive coating layer), a back black mark (a non-thermosensitive coating layer), a left black mark, a middle black mark and a right black mark can be realized. Besides the upper hole site and the lower hole site in the middle, other hole sites can realize the adjustment of 720 paper feeding detection sensors in a small range in the transverse direction, so that the detection of different black mark positions with the width of the receipt paper of 48-82.5 mm is satisfied. Fig. 8 and 12 show 10 holes.

As shown in FIG. 9, the 800 tension adjusting module consists of 810 sheet metal frame, 820 paper guide shaft, 830 tension spring, 840 left adjusting plate, 850 right adjusting plate, 860 shaft sleeve and 870 screw. The 800 tension adjusting module is mainly used for adjusting the tension of the paper in the printing process in real time and relieving the influence of inertial load and extra load on the printing quality of the paper roll in the beginning, the process and the end of printing; another function is that the left adjustment plate 840 and the right adjustment plate 850 are laterally adjustable to meet a guide for different sheet widths.

The working process of the thermosensitive receipt printer is as follows:

1. the device is powered up.

2. Initializing.

3. Putting the receipt paper.

4. And finishing paper placement.

5. The user confirms the print instruction information.

6. And the upper computer processes the printing instruction information to obtain printing information.

7. The chip in the circuit board 900 receives the print information and issues a print instruction.

8. The printing module 300 performs printing.

Specifically, the stepper motor 310 receives the pulse information (including the number and the frequency) to perform rotation, and drives the first gear transmission system 320, so as to drive the printing rubber roller 340 to rotate, and the printing head 350 synchronously receives the printing information to perform a printing command, so that the paper is conveyed forward under the rotation of the printing rubber roller 340.

9. The receipt paper head is located in the paper containing module 600, and the paper containing module 600 is in a paper containing state.

Specifically, while the printing rubber roller 340 rotates, the driving rubber roller 630 rotates synchronously, the paper head is bitten into the driving rubber roller 630, the paper containing channel sensor 690 is triggered synchronously, the driving rubber roller 630 stops rotating, and printing continues.

10. Printing is continued.

11. The paper accommodating module 600 starts to accommodate paper.

12. Printing is completed.

13. The cutter module 400 performs paper cutting.

Specifically, after the paper cutting command is received, the printing information below the printing rubber roller 340 is conveyed to the position of the fixed cutter 460 along with the rotation of the stepping motor 310, then the first small direct current motor 410 rotates, the worm 420 is fixed on the shaft head of the first small direct current motor 410, the worm 420 drives the bevel gear 430 to rotate, the full-cutting or half-cutting command is executed, the bevel gear 430 drives the movable blade 450 to move up and down, the paper cutting action is completed, and the paper cutting is completed.

14. The paper holding module 600 performs paper holding waiting.

Specifically, after the paper cutting is completed, the driving rubber roller 630 rotates along the paper advancing direction to convey the paper, and when the paper tail is located near the driving rubber roller 630 and is not separated from the driving rubber roller 630, the rotation is stopped, and the paper containing waiting is performed.

15. If the user takes away the receipt, printing is completed, and a next printing command is waited; if the user forgets to take the receipt, the paper accommodating module 600 performs the paper ejecting function and waits for the next print command.

The realization process of the beneficial effects of the thermosensitive strip printer is as follows:

1. multifunction performance

The multifunctional performance of the device of the invention is that the 400 cutter module can realize the full-cutting and half-cutting functions, and the 600 paper containing module can realize the functions of paper-spitting, paper-containing and paper-withdrawing.

400 concrete implementation modes of full cutting function of cutter module: in the direction shown in fig. 6, the first small dc motor 410 rotates clockwise along the direction of the output shaft, the worm 420 drives the bevel gear 430 to rotate clockwise, and the movable cutter 450 returns to the lowest point of the initial position after passing through the highest point to complete a full cutting function. The level signal is changed to be in an initial state high level, the fan surface bulge on one side of the bevel gear contacts 440 a bidirectional switch low level, the fan surface bulge on one side of the bevel gear leaves 440 a bidirectional switch high level, and the first small direct current motor stops rotating to complete a full-cut function.

400 concrete implementation modes of half-cutting function of cutter module: in the direction shown in fig. 6, the first small dc motor 410 rotates counterclockwise along the direction of the output shaft, the worm 420 drives the bevel gear 430 to rotate counterclockwise, the highest point of the movable cutter 450 does not pass through, and the movable cutter returns to the lowest point of the initial position in the opposite direction, thus completing a half-cutting function. The level signal is changed into an initial state high level, the fan surface bulge on one side of the bevel gear is contacted with 440 a bidirectional switch low level, the fan surface bulge on one side of the bevel gear is separated from 440 a bidirectional switch high level, the 410 a first small direct current motor reversely rotates, the fan surface bulge on one side of the bevel gear is contacted with 440 a bidirectional switch low level for the second time, the fan surface bulge on one side of the bevel gear is separated from 440 a bidirectional switch high level for the second time, and a half-cutting function is completed.

The 600 paper containing module has the following implementation modes of paper-spitting, paper-containing and paper-withdrawing functions:

when printing, the paper head is initially positioned at 340 printing rubber roller position, and sequentially passes through 400 cutter modules and 600 paper holding modules. 340 print the rubber roll pivoted and 630 initiative rubber roll rotates simultaneously, conveniently stings by the strip paper, stings in, and the paper head can trigger to be located the paper passageway sensor 690 that holds of 630 initiative rubber roll top, 630 initiative rubber roll stop rotation this moment, and printing process continues, and the strip paper can be bent to the below and be located 400 cutter module and 600 and hold the concave shape space that paper module formed, and the strip paper state is the U type, has accomplished the function of holding paper this moment. After the printing process is finished, the paper tail is positioned between the 630 driving rubber roller and the 640 driven wheel and is in a non-leaving state, the 630 driving rubber roller continuously rotates according to the requirement, and the paper tail leaves the 630 driving rubber roller, so that the paper-spitting function is completed; if the active rubber roller is in a stop-wait state according to the requirement 630, the paper-containing function is completed; if the driving rubber roller rotates reversely according to the requirement 630, the paper tail falls down along the paper accommodating space until the paper head leaves the driving rubber roller 630, and the paper withdrawing function is completed.

2. Adjustability of

The adjustability of the device is embodied in that the 100 sheet metal bracket module can realize compatibility with the paper roll outer diameter specification, the paper width specification and the paper roll paper shaft specification of the receipt paper; the 800 tension adjusting module can be compatible with the width specification of the receipt paper; the 700 paper-in detection module can realize compatibility of whether the receipt paper has black marks and different black mark positions.

The height from the center of the 140 mandrel to the upper surface of the 110 sheet metal base of the 100 sheet metal support module is more than 150mm, and the maximum paper roll diameter can be met by 300mm; the distance between the first 120-side metal plate and the second 130-side metal plate is 84.5mm, and the width of paper can be 48-82.5 mm; the 141 mandrel I and the 142 mandrel II are matched for use, so that the inner diameter of the paper roll shaft is 25.4mm, and the 142 mandrel II is independently used, so that the inner diameter of the paper roll shaft is 18mm.

The 810 sheet metal frame upper surface of 800 tension adjustment module is equipped with laser-marking 8101, marks the position of different receipt paper both sides edge, and as shown in fig. 13, laser-marking 8101. And loosening 880 screws, synchronously adjusting 840 the left adjusting plate and the right adjusting plate to close to the center, adjusting to the mark position requiring the paper width, and locking 880 screws to finish the paper feeding guiding adjustment for different paper widths. The height of the sleeve 860 is larger than the exposed lengths of the rivets of the left adjusting plate 840 and the right adjusting plate 850, so as to firmly lock the positions of the left adjusting plate 840 and the right adjusting plate 850.

The left, middle and right positions above and below the back shell paper feeding channel of the 700 paper feeding detection module are 10 holes in total, and the 720 paper feeding detection sensor is fixed in a certain hole through a buckle, so that detection of 6 positions of a front black mark (a thermosensitive coating layer), a back black mark (a non-thermosensitive coating layer), a left black mark, a middle black mark and a right black mark can be realized. Besides the upper hole site and the lower hole site in the middle, other hole sites can realize the adjustment of 720 paper feeding detection sensors in a small range in the transverse direction, so that the detection of different black mark positions with the width of the receipt paper of 48-82.5 mm is satisfied. The 720 paper-in detection sensor can also detect the paper-in state and the paper-out state according to different AD values, and the continuous paper state or the black label paper state.

3. Configurability of

The configurability of the device is embodied in that the 300 printing module can realize compatibility of a printing head with the printing width of 72mm and a printing head with the printing width of 80 mm; and secondly, 600 paper containing modules can be compatible and configured, so that the common parts are used to the greatest extent, different functional configurations are completed, and the production cost is reduced.

The 350 printing head of the 300 printing module consists of a printing head body and a printing head matrix, wherein the printing head body is a standard component, the specification can be divided into 72mm printing width and 80mm printing width, the printing head matrix is a common component, and different patches are combined to form 350 printing heads with different printing widths. Because the printing head matrix is a shared piece, the 300 printing module can directly configure 350 printing heads with different printing widths according to requirements, the conventional receipt printer can only realize one printing width, the printers with different printing widths are often different devices, and a set of dies is required to be opened again due to the change of the size and the appearance, so that the great waste of production cost is caused.

600 holds paper module as a function independence complete part, can dispose 600 and hold paper module or not dispose 600 and hold paper module according to the demand, and conventional receipt printer has 600 to hold paper module's equipment and does not hold 600 to hold paper module's equipment often to be different equipment, and equipment appearance is different, the size is different, because of the difference of overall dimension, often all is alone die set, does not have shared part or few for-purpose part, has caused manufacturing cost's very big waste. The equipment disclosed by the invention eliminates 600 paper accommodating modules and all other parts are shared parts, so that the production cost and expenditure are greatly saved.

4. Modular structure

The modular structure of the device is characterized in that all modules can be independently assembled and have independent functions, in particular to a 300 printing module, a 400 cutter module and a 600 paper containing module which respectively bear the functions of printing, paper cutting, paper containing, paper ejecting, paper containing and paper withdrawing, early-stage testing and independent testing, and secondly, the 300 printing module, the 400 cutter module and the 600 paper containing module are arranged in parallel, and the assembly mode among the three modules is similar to a sandwich. The modular structure assembly is described in detail below.

The main frame 200 is a main bearing part of the strip printer, the printing module 300 is fixed on the front surface of the main bearing part by screws, the circuit board 900 is fixed on the back surface of the main bearing part by screws, the four corners of the main bearing part are fixedly connected with the paper feeding detection module 700 by screws, and the circuit board 900 is positioned in an internal closed space formed by the main frame 200 and the paper feeding detection module 700.

400 cutter module rotates with 200 main frame through 500 pivots to be connected, and 400 cutter module both sides upper wing square hole forms buckle locking through 200 main frame upper wing inboard arch.

600 and Rong Zhimo are respectively locked and fixed by the conical counter bores on the two sides and the threaded holes on the two sides of the 400 cutter module.

The 800 tension adjusting module is fixedly locked on the back plate of the 700 paper feeding detecting module through a convex hull positioning screw. The 200 main frame and the 700 paper feeding detection module are fixedly connected with the 100 sheet metal bracket module through 2 screws respectively. The whole module structure is simple and clear to assemble, the investigation problem is simple and convenient, the module replacement is convenient and quick, and the modular structure design thought is clear at a glance.

5. Easy maintainability

The maintainability of the device is embodied in that the paper blocking or jamming process of the receipt printer is convenient for taking out broken paper scraps and removing faults, and particularly, the device can be opened around a 500 rotating shaft by releasing a buckle structure after a 400 cutter module, a 600 paper accommodating module and the 400 cutter module are fixedly connected into a whole, so that the device is convenient for removing 300 printing module jamming faults, as shown in figure 9.

As shown in fig. 10, 400 knife module knife jam can be cleared by opening 470 the guide cover plate. The 600 module jam or jam fault can be removed by opening 670 the removable cover. The above are all buckle structures, and the operation is convenient and simple.

6. Precise high-speed printing

The device of the invention performs precision high-speed printing on a 300 printing module. The precision means that the 330 fixed adjusting sheet adopts a slow wire cutting process, and the processing precision can reach 0.01mm. The 330 fixed adjusting piece is respectively connected with the outer diameter of the flange bearing at one end of the printing rubber roller 340 and one end of the rotating shaft of the 350 printing head and is used for precisely controlling the relative position between the 350 printing head and the 340 printing rubber roller, thereby ensuring the accuracy of the tangential position of the heating wire of the 350 printing head and the 340 printing rubber roller and further ensuring the printing quality. One means that the printing speed of the printing head 350 can reach 250mm/s at the highest, and the other means that the linear speed of the stepping motor 310 finally drives 340 the printing rubber roller to reach 250mm/s through the first gear transmission system 320. The printing speed of a conventional receipt printer in the market meets the requirement of high-speed printing and is insufficient to drive receipt paper rolls with the maximum diameter of 300mm, or can drive receipt paper rolls with the maximum diameter of 300mm, the printing speed is maintained at about 100-150mm/s, and the printing speed are difficult to be combined.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A thermal receipt printer, the thermal receipt printer comprising: the device comprises a sheet metal bracket module (100), a main frame (200), a printing module (300), a cutter module (400), a rotating shaft (500), a paper accommodating module (600), a paper feeding detection module (700), a tension adjusting module (800) and a circuit board (900);

the sheet metal bracket module (100) comprises: the metal plate base (110), the metal plate side plate I (120), the metal plate side plate II (130) and the mandrel (140), wherein the distance between the metal plate side plate I (120) and the metal plate side plate II (130) is 84.5mm, and the height from the center of the mandrel (140) to the upper surface of the metal plate base (110) is greater than 150mm; the mandrel (140) comprises a mandrel I (141) and a mandrel II (142), the mandrel I (141) and the mandrel II (142) are assembled through a D-shaped shaft, the mandrel I and the mandrel II penetrate axially, the elastic protruding points are fixed, and the whole sheet metal bracket module (100) can meet the requirements of 300mm of maximum diameter of strip paper and 48 mm-82.5 mm of width of strip paper;

the printing module (300) is fixed on the front surface of the main frame (200), the printing module (300) consists of a stepping motor (310), a first gear transmission system (320), a fixed adjusting sheet (330), a printing rubber roller (340), a printing head (350), a pressure spring (360) and a printing frame (370), the effective printing width of the printing rubber roller (340) is 80mm, and the printing head (350) with the printing width of 72mm and the printing width of 80mm can be directly compatible according to requirements; the printing head (350) consists of a printing head body and a printing head matrix, wherein the printing head matrix is a shared piece, different patch combinations form the printing heads (350) with different printing widths, the printing speed of the printing head (350) is 250mm/s at most, and high-speed printing between 150mm/s and 250mm/s can be realized; the fixed adjusting sheet (330) is formed by cutting a slow wire, and the fixed adjusting sheet (330) is respectively connected with a flange bearing at one end of the printing rubber roller (340) and one end of a rotating shaft of the printing head (350) and is used for accurately controlling the relative position between the printing head (350) and the printing rubber roller (340) and ensuring the accuracy of the tangential position of the heating wire of the printing head (350) and the printing rubber roller (340);

the rotary shaft (500) is arranged below the front surface of the main frame (200), specifically, the rotary shaft (500) penetrates through the lower wing of the main frame (200) and the lower part of the cutter module (400) at the same time, the main frame (200) is fixedly connected with the sheet metal support module (100) through screws, the cutter module (400) can rotate around the rotary shaft (500), and after the rotary shaft (500) rotates to a preset angle, the bottom surface of the cutter module (400) reaches the inclined surface of the sheet metal support module (100) to stop rotating; the buckling state is locked by the inner side bulge of the upper wing of the main frame (200) and the upper wing square hole buckles (480) at the two sides of the cutter module (400);

the cutter module (400) consists of a first small direct current motor (410), a worm (420), a bevel gear (430), a two-way switch (440), a movable blade (450), a fixed blade (460) and a guide cover plate (470); the fan-shaped bulge on one side of the bevel gear (430) is matched with the two-way switch (440), so that the full-cutting and half-cutting functions can be realized, when the full-cutting is realized, the first small-sized direct current motor (410) rotates clockwise along the axial direction, the worm (420) drives the bevel gear (430) to rotate clockwise, and the movable blade (450) returns to the lowest point of the initial position after passing through the highest point to complete the full-cutting; when in half-cutting, the first small direct current motor (410) rotates anticlockwise along the direction of the output shaft, the worm (420) drives the bevel gear (430) to rotate anticlockwise, the movable blade (450) does not return to the lowest point of the initial position in the opposite direction without passing through the highest point, and half-cutting is completed;

the paper accommodating module (600) is locked and fixed through conical counter bores on two side surfaces and threaded holes on two side surfaces of the cutter module (400) respectively, and the paper accommodating module (600) consists of a second small direct current motor (610), a second gear transmission system (620), a driving rubber roller (630), a driven wheel (640), a frame body (650), a shell (660), a movable cover plate (670) and a paper outlet (680); the frame body (650) is in a concave shape, an inner space is formed between the concave part and the cutter module (400), and the inner space is used as a space for containing paper and is also a space for passing paper withdrawal; the movable cover plate (670) can be pulled out upwards and is used for removing paper jam faults; after the printing of the strip paper is completed, the cutter module (400) cuts off a printed part and an unprinted part, and the paper head of the printed part is positioned between the driving rubber roller (630) and the driven wheel (640), so that the functions of paper discharge, paper containing waiting and paper withdrawal are realized according to the requirements; the paper containing function does not affect the printing process in the drawing process, and the printing of longer receipt paper is realized; if no paper containing requirement exists, the paper outlet (680) is directly arranged on the cutter module (400), and a standby connecting hole for arranging the paper outlet (680) is reserved on the side surface of the cutter module (400);

the printing module (300), the cutter module (400) and the paper accommodating module (600) are arranged in parallel;

the paper feeding detection module (700) is fixedly connected with the sheet metal bracket module (100) through a screw; the paper feeding detection module (700) consists of a back shell (710) and a paper feeding detection sensor (720); 10 hole sites are arranged in the paper feeding channel of the back shell (710); the paper feeding detection sensor (720) is fixed in any hole site through a buckle and is used for detecting the positions of the front black mark, the back black mark, the left black mark, the middle black mark and the right black mark;

the tension adjusting module (800) is fixedly locked on the back panel of the paper feeding detecting module (700) through a convex hull positioning screw; the tension adjusting module (800) is mainly used for adjusting the tension of the receipt paper in the printing process in real time and relieving the influence of inertial load and extra load on the printing quality of the receipt paper roll at the beginning, the middle and the end of printing; the tension adjusting module (800) consists of a sheet metal frame (810), a paper guide shaft (820), a tension spring (830), a left adjusting plate (840), a right adjusting plate (850), a shaft sleeve (860) and a screw (870); the upper surface of the sheet metal frame (810) is provided with a laser mark (8101) for marking the positions of the edges of two sides of different paper sheets, a screw (870) is loosened, a left adjusting plate (840) and a right adjusting plate (850) are synchronously adjusted to be close to the center, the positions of the mark requiring paper width are adjusted, and the screw (870) is locked, so that the paper feeding guiding adjustment for different paper widths can be completed;

the circuit board (900) is fixed on the back of the main frame (200), and is particularly positioned in a closed space formed by the main frame (200) and the paper feeding detection module (700).