CN115284752A - Thermal sensitive receipt printer - Google Patents

Abstract

The invention provides a thermosensitive receipt 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 containing module are arranged in parallel. This temperature sensing relies on strip printer can realize cutting entirely and half the function, can compatible different external diameters rely on the strip paper, can compatible different specifications beat printer head, and modular structure is convenient for maintain, can realize accurate high-speed printing.

Description

Thermal sensitive receipt printer

Technical Field

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

Background

The thermosensitive receipt printer is widely applied to bank ATM machines and hospital registration machines, 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 discharging, paper containing, paper accommodating and paper ejecting functions; further, it is required to meet the specifications of various papers on the market, such as: the widths of different slip papers are 48mm, 56mm, 70mm, 76mm, 80mm and 82.5mm; the inner diameters of the core shafts of different slip papers are 25.4mm and 18mm in common; different paper roll outer diameters are 150mm, 180mm, 200mm, 220mm and 250mm, and the maximum paper roll outer diameter is 300mm; different types of strip paper can be divided into continuous paper and black label paper; according to the different black mark positions, the black mark can be divided into a front black mark (a thermosensitive coating layer surface) and a back black mark (a non-thermosensitive coating layer surface), a left black mark, a middle black mark and a right black mark; it is also required to satisfy different printing widths, for example, 72mm and 80mm printing widths; it is also required to satisfy requirements such as high-speed printing, for example: the conventional printing speed is 150mm/s, and can reach 250mm/s at most.

Aiming at the application scenes and the functional requirements, the conventional receipt printer in the market can only meet partial requirements or receipt printer manufacturers release a plurality of receipt printers with different specifications to meet the variable application requirements in the market, so that the receipt printer with each specification needs to be provided with a mold independently, the production cost is high undoubtedly, and the receipt printer is not small in economic pressure for the manufacturers.

Disclosure of Invention

Based on the design, in order to meet different application scenes and a plurality of functional requirements in the market and solve the problems of production cost and difficult card paper maintenance of manufacturers, the invention designs the thermosensitive receipt printer which is multifunctional, adjustable, configurable, modular in structure, easy to maintain, precise and high-speed to print.

In a first aspect, an embodiment of the present invention provides a thermal document printer, including: the paper feeding device comprises a metal plate support 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 on the front surface of the main frame 200; the circuit board 900 is fixed to the back of the main frame 200; the circuit board 900 is fixed in the closed space formed by the main frame 200 and the paper feeding detection module 700; the rotation shaft 500 is disposed below the front surface of the main frame 200; the printing module 300, the cutter module 400 and the paper containing module 600 are arranged in parallel; the cutter module 400 is rotatably connected with the main frame 200 through a rotating shaft 500, and upper wing square holes on two sides of the cutter module 400 are locked through buckles formed by the inner side bulges of the upper wing of the main frame 200; the paper containing module 600 is locked and fixed by aligning screws through the conical counter bores on the two side faces and the threaded holes on the two side faces of the cutter module 400 respectively; the tension adjusting module 800 is fixed on the back plate of the paper-feeding detecting module 700 by the convex hull positioning screw; the main frame 200 and the paper feeding detection module 700 are respectively and fixedly connected with the sheet metal bracket module 100 through 2 screws.

Further, the sheet metal bracket module 100 includes: the metal plate comprises a metal plate base 110, a metal plate side plate I120, a metal plate side plate II 130 and a 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 more than 150mm; and 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 stepping motor 310, a first gear transmission system 320, a fixed tab 330, a printing rubber roller 340, a printing head 350, a pressure spring 360 and a printing frame 370; the fixing adjustment sheet 330 is formed by cutting and processing a slow-feeding wire.

Further, the fixing tabs 330 are respectively connected to a flange bearing at one end of the printing roller 340 and one end of the rotation shaft of the printing head 350, and are used for accurately controlling the relative position between the printing head 350 and the printing roller 340, thereby ensuring the accuracy of the tangent position between the heating line of the printing head 350 and the printing roller 340.

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

Further, the rotating shaft 500 penetrates through the lower wing of the main frame 200 and below 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 a preset angle is reached, the bottom surface of the cutter module 400 reaches the inclined surface of the sheet metal bracket module 100 and stops rotating; the fastened state is locked by the protrusion of the inner side of the upper wing of the main frame 200 and the upper wing square hole fasteners 480 at both sides of the cutter module 400.

Further, the paper containing 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 plate 670, and a paper outlet 680; the frame body 650 is in a shape of a letter's socket, and an inner space is formed between the recessed portion and the cutter module 400; the movable cover plate 670 can be pulled out upwards for eliminating paper jam faults; the paper outlet 680 is installed on the cutter module 400, and a spare connection hole for installing 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 case 710 and a paper feeding detection sensor 720; the paper inlet channel of the back shell 710 is provided with 10 hole sites; the paper-feeding detection sensor 720 is fixed in any hole position 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 sheet metal frame 810 is equipped with laser identification 8101 for mark the position of different receipts strip paper both sides edge.

The embodiment of the invention has the following beneficial effects:

the invention provides a thermosensitive receipt 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 containing module are arranged in parallel. This strip printer is relied on to heat sensitive can realize cutting entirely and half the function, can compatible different external diameters rely on the slip paper, can compatible different specifications beat printer head, and modular structure is convenient for maintain, can realize accurate high-speed printing.

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

In order to make the aforementioned and other objects, features and advantages of the present invention 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 used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1: a schematic structural composition diagram of a thermosensitive receipt printer;

FIG. 2: the schematic structural composition diagram of the sheet metal bracket module;

FIG. 3: schematic illustration of the mandrel;

FIG. 4: the main frame is schematically connected with the printing module and the circuit board in an assembling manner;

FIG. 5 is a schematic view of: the printing module structure composition schematic diagram;

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

FIG. 7: the structure composition schematic diagram of the paper containing module;

FIG. 8: the paper feeding detection module is structurally and schematically shown;

FIG. 9: the structure composition schematic diagram of the tension adjusting module;

FIG. 10: a schematic diagram of the separation state of the printing module and the cutting die;

FIG. 11: a schematic diagram of a buckling hole site of the cutter module;

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

FIG. 13: the tension adjusting module position adjusting identification schematic diagram.

Icon: 100 sheet metal bracket modules; 200 a main frame; 300 a printing module; 400 cutter modules; 500 of a rotating shaft; 600 paper holding module; 700 paper feeding detection module; 800 tension adjusting module; 900 circuit board (located in the internal space of 700 paper-feeding detection module); a 110 sheet metal base; 120, a side surface metal plate I; 130 side surface metal plate II; 140 mandrels; 141 mandrel one; 142 mandrel two; 310 a stepper motor; 320 a first gear system; 330 securing the tab; 340 printing a rubber roller; 350 a print head; 360 compression springs; 370 a print frame; 410 a first small dc motor; 420 a worm; 430 a bevel gear; 440 a bi-directional switch; 450 movable blades; 460 fixing the blade; 470 to guide the cover plate; 480 buckling an upper wing square hole; 610 a second small direct current motor, 620 a second gear transmission system; 630 active rubber roller; 640 a driven wheel; 650 a frame body; 660 housing; 670 a removable cover; 680 a paper outlet; 690 paper path sensor; 710 back case, 720 in-paper detection sensor; 810 a sheet metal frame; 820 a paper guide shaft; 830 tension springs; 840 left adjustment plate; 850 right adjustment plate; 860 a shaft sleeve; 870 screws; a first hole location 721; a second hole location 722; a third hole bit 723; a fourth well site 724; a fifth hole site 725; a sixth hole location 726; a seventh hole bit 727; an eighth hole site 728; a ninth hole site 729; a tenth hole site 730; laser marking 8101.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of 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 present invention, 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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

The conventional receipt printer in the market can only meet partial requirements or receipt printer manufacturers can release multiple receipt printers with different specifications to meet changeable application requirements in the market, so that the receipt printer with each specification needs to be independently opened, the production cost is high undoubtedly, and the receipt printer is not a small economic pressure for manufacturers.

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

Example one

The invention provides a thermal sensitive receipt printer, as shown in figure 1, the thermal sensitive receipt printer comprises 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 internal space of the 700 paper feeding detection modules and not shown in figure 1).

As shown in fig. 2, 100 sheet metal bracket modules: the metal plate comprises 110 metal plate base parts, 120 metal plate side plates I, 130 metal plate side plates II and 140 mandrel parts. The height from the center of the 140 mandrel to the upper surface of the 110 sheet metal base is larger than 150mm, the distance between the 120 side surface sheet metal I and the 130 side surface sheet metal II is 84.5mm, and the integral sheet metal support module can meet the requirements that the maximum diameter of strip paper is 300mm, and the width of the strip paper is 48mm-82.5 mm.

As shown in fig. 3, the 140 mandrel consists of a first 141 mandrel and a second 142 mandrel, wherein the first 141 mandrel has an outer diameter of 24.8mm, the second 142 mandrel has an outer diameter of 17mm, the first 141 mandrel has an inner diameter and the second 142 mandrel has an outer diameter which are assembled in a D-shape, axially penetrate and are fixed by elastic convex points, and the use of strip paper with the inner diameter of 25.4mm of the mandrel can be realized; and the use of the strip paper with the inner diameter of 18mm can be realized by independently using the 142 mandrel II.

As shown in fig. 4, the main frame 200 is the main bearing part of the thermal slip printer, the printing module 300 is fixed on the front side of the main frame 200, the circuit board 900 is fixed on the back side 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 located in the inner 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 300 printing module consists of 310 stepping motor, 320 first gear transmission system, 330 fixing tab, 340 printing rubber roller, 350 printing head, 360 pressure spring and 370 printing frame. The printing rubber roller 340 has an effective printing width of 80mm, and can be directly compatible with a printing head with a printing width of 72mm and a printing width of 80mm 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 adjustment sheet is formed by cutting and processing a slow-moving wire, and the processing precision can be 0.01mm, so that the superposition of the printing heating line and the tangent position of the rubber roller can be accurately controlled, the precise printing can be realized, and the printing quality can be well controlled.

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

Note: all figures in this application do not show parts that are not relevant to the present application.

Fig. 4 and 6 show that the 500 rotating shaft penetrates through the lower wing of the 200 main frames and the lower part of the 400 cutter module, the 200 main frames are fixedly connected with the 100 sheet metal support modules through screws, the 400 cutter module can rotate around the 500 rotating shaft, and after a preset angle is reached, the bottom surface of the 400 cutter module reaches the inclined surface of the 100 sheet metal support modules and stops rotating; the buckling state is locked by the 200 protrusions at the inner side of the upper wing of the main frame and the 400 square hole buckles 480 at the two sides of the cutter module. As shown in fig. 11.

As shown in fig. 7, the 600 paper-accommodating module is composed of a 610 second small-sized dc motor, 620 second gear transmission system, 630 driving rubber rollers, 640 driven wheels, 650 frame body, 660 casing, 670 movable cover plate, and 680 paper outlet. 650 the frame body is the character cut in bas-relief form, forms an inner space between part and the 400 cutter modules of recessing, inner space is as holding a space of paper, also is the space that moves back paper and pass through.

670 the movable cover plate can be pulled out upwards for eliminating paper jam.

After printing by the strip paper is finished, the 400 cutter module cuts off a printed part and an unprinted part, and a printed part paper head is positioned between the 630 driving rubber roller and the 640 driven wheel, so that functions of paper discharging, paper containing waiting, paper returning and the like can be realized according to requirements. The paper accommodating function does not influence the printing process in the pulling process; and the printing of longer receipt paper is realized. If the paper accommodating requirement does not exist, the 680 paper outlet is directly arranged on the 400 cutter module, and a spare connecting hole for arranging the 680 paper outlet is reserved on the side surface of the 400 cutter module. The printer with the paper containing function and the printer without the paper containing function in the market are usually two different devices, but the printer disclosed by the invention uses a shared part to the greatest extent, so that the mould opening cost of redundant plastic parts and sheet metal parts is saved, and the management difficulty caused by a plurality of parts is reduced.

As shown in fig. 8, the 700-in-paper detection module comprises 710 of a back shell and 720 of a paper-in detection sensor. The position of the left, the middle and the right of the paper channel is gone into to 710 dorsal scale (namely first hole site 721, second hole site 722, third hole site 723, fourth hole site 724, fifth hole site 725, sixth hole site 726, seventh hole site 727, eighth hole site 728, ninth hole site 729, tenth hole site 730), 720 income paper detection sensor passes through the buckle to be fixed in a certain hole site, can realize the detection of positive black mark (thermal coating face), back black mark (no thermal coating face), left side black mark, middle black mark, the black mark of right side totally 6 positions. Except for the upper hole site and the lower hole site in the middle, the other hole sites can realize the adjustment of a small range in the transverse direction of the 720-paper-feeding detection sensor, so that the detection of different black mark positions with the width of 48-82.5 mm of the strip paper is met. Fig. 8 and 12 show 10 holes.

As shown in fig. 9, the 800 tension adjusting module consists of a 810 sheet metal frame, 820 paper guide shafts, 830 tension springs, 840 left adjusting plates, 850 right adjusting plates, 860 shaft sleeves and 870 screws. The 800 tension adjusting module is mainly used for adjusting the tension of the paper slip in the printing process in real time and relieving the influence of inertial load and extra load on the printing quality when the paper slip is printed at the beginning, in the process and at the end; the other function is that the left and right adjusting plates 840 and 850 can be adjusted laterally 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. And (5) initializing.

3. And putting the slip paper.

4. And finishing paper placing.

5. The user confirms the print instruction information.

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

7. The chips in the circuit board 900 receive the print information and issue a print command.

8. The printing module 300 performs printing.

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

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

Specifically, when 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 to be performed.

10. And continuously printing.

11. The paper accommodating module 600 starts accommodating paper.

12. The printing is completed.

13. The cutter module 400 performs cutting of the paper.

Specifically, after printing is finished, a paper cutting instruction is issued, after a paper cutting command is received, printing information located below the printing rubber roll 340 can be 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 to the shaft head of the first small direct current motor 410, the worm 420 drives the bevel gear 430 to rotate, a full cutting command or a half cutting command is executed, the bevel gear 430 drives the movable blade 450 to move up and down, a paper cutting action is finished, and paper cutting is finished.

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

Specifically, after the paper cutting is completed, the driving rubber roller 630 rotates along the paper advance direction to convey the slip paper, and when the paper tail is located near the driving rubber roller 630 and does not break away from the driving rubber roller 630, the rotation is stopped, and the paper containing waiting is executed.

15. If the user takes the receipt away, printing is finished, and a next printing command is waited; if the user forgets to take the slip, the paper-receiving module 600 executes the paper-ejecting function to wait for the next printing command.

The realization process of the beneficial effect of the thermosensitive receipt printer is as follows:

1. versatility

The multifunctional device of the invention has the advantages that the 400 cutter module can realize full cutting and half cutting functions, and the 600 paper containing module can realize paper discharging, paper containing and paper withdrawing functions.

The specific implementation manner of the full cutting function of the 400 cutter module is as follows: from the direction shown in fig. 6, 410 the first small dc motor rotates clockwise along the shaft-out direction, 420 the worm drives 430 the helical gear to rotate clockwise, 450 the movable cutter passes the highest point and then returns to the lowest point of the initial position, completing a full-cutting function. The level signal is changed into high level of an initial state, the sector bulge on one side of the bevel gear 430 is contacted with the low level of the two-way switch 440, the sector bulge on one side of the bevel gear 430 is separated from the high level of the two-way switch 440, and the first small direct current motor 410 stops rotating, so that a full-cutting function is completed.

The specific implementation manner of the half-cutting function of the 400-cutter module comprises the following steps: from the direction shown in fig. 6, the first small-sized direct current motor 410 rotates counterclockwise along the shaft-out direction, the worm 420 drives 430 the helical gear to rotate counterclockwise, the movable cutter 450 returns to the lowest point of the initial position in the opposite direction after passing through the highest point, and a half-cutting function is completed. The level signal changes to the high level of the initial state, the sector bulge at one side of the bevel gear 430 contacts the low level of the bidirectional switch 440, the sector bulge at one side of the bevel gear 430 leaves the high level of the bidirectional switch 440, the first small-sized direct current motor 410 rotates reversely, the sector bulge at one side of the bevel gear 430 contacts the low level of the bidirectional switch 440 for the second time, and the sector bulge at one side of the bevel gear 430 leaves the high level of the bidirectional switch 440 for the second time, so that a half-cut function is completed.

The 600 paper containing module realizes the functions of paper discharging, paper containing and paper ejecting as follows:

during printing, the paper head is initially positioned at the position of the printing rubber roller 340 and sequentially passes through the 400 cutter module and the 600 paper accommodating module. 630 initiative rubber roll rotates simultaneously when 340 prints the rubber roll pivoted, conveniently relies on the bite of strip paper, when biting into, the stub bar can trigger the appearance paper passageway sensor 690 that is located 630 initiative rubber roll top, 630 initiative rubber roll stop rotation this moment, the printing process continues, relies on strip paper can bend downwards to be located 400 cutter modules and 600 and holds the type of calligraphy space that the paper module formed, relies on the strip paper state to be the U type, has accomplished a 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 an unseparated state, the 630 driving rubber roller continues to rotate according to the requirement, and the paper tail leaves the 630 driving rubber roller, so that the function of paper discharging is finished; if the active rubber roller is in a stop waiting state according to the requirement 630, the function of containing paper is finished; if the driving rubber roller rotates reversely according to the requirement 630, the paper tail falls down along the paper containing space until the paper head leaves the driving rubber roller 630, and the function of paper withdrawing is finished.

2. Adjustability

The adjustable structure of the device can realize compatibility of the outer diameter specification of a paper roll of receipt paper, the width specification of the paper and the specification of a paper roll shaft in a 100-metal plate support module; the 800 tension adjusting module can realize compatibility with the width specification of the receipt paper; the 700 paper-feeding detection module can realize compatibility of whether black marks exist on the receipt paper and different black mark positions.

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

The upper surface of the 810 sheet metal frame of the 800 tension adjusting module is provided with a laser mark 8101, which marks the positions of two side edges of different receipt paper, as shown in fig. 13, the laser mark 8101. And (3) loosening 880 the screw, synchronously adjusting 840 the left adjusting plate and 850 the right adjusting plate to be close to the center, adjusting to the identification position of the required paper width, and locking 880 the screw, thus finishing the paper feeding guiding adjustment aiming at different paper widths. Wherein, 860 is higher than 840 left adjustment plate and 850 right adjustment plate rivet exposed length, purpose is to lock 840 left adjustment plate and 850 right adjustment plate position firmly.

The 710 back shell of the 700 paper-feeding detection module is fixed in 10 hole sites on the upper side and the lower side of the paper-feeding channel, and the 720 paper-feeding detection sensor is fixed in a certain hole site through a buckle, so that the detection of 6 positions including 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, the other hole sites can realize the adjustment of a small range in the transverse direction of the 720-paper-feeding detection sensor, so that the detection of different black mark positions with the width of the strip paper ranging from 48mm to 82.5mm is met. The 720 paper feeding detection sensor can also detect the paper state, the paper absence state, the continuous paper state or the black mark paper state according to different AD values.

3. Configurability

The configurable body of the equipment can realize that a 300 printing module can be compatible with a printing head with a printing width of 72mm and a printing head with a printing width of 80 mm; and secondly, a 600-free paper containing module can be compatibly configured, a shared part is used to the greatest extent, different functional configurations are completed, and the production cost is reduced.

The 350 print head of 300 print module comprises the printer head body and the printer head base member, and the printer head body is the standard component, and the specification can be divided into 72mm printing width and 80mm printing width, and the printer head base member is the sharing piece, and different paster combinations constitute the 350 print head of different printing widths. Because of beating the printer head base member and being the sharing piece, 300 print the 350 printer head that the module can directly dispose different printing width according to the demand, conventional receipt printer can only realize one kind and print the width, and the printer of different printing width often is different equipment, need open a set of mould again because of the change of size appearance, has caused manufacturing cost's very big waste.

The 600 paper containing module serves as an independent and complete part with functions, the 600 paper containing module can be configured or the 600 paper containing module is not configured according to requirements, equipment with the 600 paper containing module and equipment without the 600 paper containing module of a conventional receipt printer are often different in equipment shape and size, and the equipment shape and size are different. All the parts except the 600 paper containing modules are shared parts, so that the production cost is greatly saved.

4. Modular structure

The modular structure of the equipment can be assembled independently and has independent functions, in particular to a 300 printing module, a 400 cutter module and a 600 paper containing module, which respectively undertake the functions of printing, paper cutting and paper containing, paper discharging, paper containing and paper returning, and are tested in an early stage and tested independently, and then the 300 printing module, the 400 cutter module and the 600 paper containing module are arranged in parallel, and the assembly mode of the three is similar to a sandwich. The modular structure assembly is described in detail below.

The printer comprises a main frame 200, a printing module 300, a circuit board 900, a paper feeding detection module 700, a main frame 200, a main bearing part of the printer, a front surface of the printing module 300, a back surface of the printing module 900, four corners of the printing module 900, and a closed space formed by the main frame 200 and the paper feeding detection module 700.

The 400 cutter module is rotationally connected with the 200 main frames through a 500 rotating shaft, and the square holes of the upper wings on the two sides of the 400 cutter module are locked through the 200 protrusions on the inner sides of the upper wings of the main frames to form buckles.

The 600 paper containing modules are respectively locked and fixed by the conical counter bores on the two side surfaces and the screw holes on the two side surfaces of the 400 cutter modules through the alignment screws.

The 800 tension adjusting module is fixedly connected with the back panel of the 700 paper-in detection module through the convex hull positioning screw. The 200 main frames and the 700 paper-feeding detection module are respectively fixedly connected with the 100 sheet metal bracket modules through 2 screws. The whole modular structure is simple and clear to assemble, the problem checking is simple and convenient, the modules are convenient and fast to replace, and the modular structure design concept is clear at a glance.

5. Easy maintainability

The easy maintenance of the device of the invention is embodied in that the loose paper scraps can be conveniently taken out in the paper blocking or jamming process of the slip printer, and the fault can be conveniently eliminated, in particular to a 400 cutter module, a 600 paper containing module and a printing module which are fixedly connected into a whole and can be opened around a 500 rotating shaft by releasing a buckle structure, and the fault of jamming of the printing module can be conveniently eliminated by 300, as shown in fig. 9.

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

6. Precision high speed printing

The precise high-speed printing of the equipment is realized in a 300 printing module. The precision refers to that the 330 fixing adjusting sheet adopts a slow-moving wire cutting process, and the processing precision can reach 0.01mm. The 330 fixed adjusting sheet is respectively connected with the flange bearing outer diameter of one end of the printing rubber roll 340 and one end of the 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 roll 340, so that the accuracy of the tangent position of the heating wire of the printing head 350 and the printing rubber roll 340 is ensured, and the printing quality is ensured. The first high-speed printing means that the printing speed of the 350 printing head can reach 250mm/s at most, and the second high-speed printing means that the linear speed of the 310 stepping motor which drives the 340 printing rubber roller through the 320 first gear transmission system can reach 250mm/s at most. The printing speed of a conventional strip printer in the market meets the requirement of high-speed printing but is not enough to drive a strip paper roll with the maximum diameter of 300mm, or the conventional strip printer can drive a strip paper roll with the maximum diameter of 300mm, the printing speed is maintained at about 100-150mm/s, the two rolls are difficult to be combined, and the application can be combined.

The invention provides a thermosensitive receipt printer, which comprises a metal plate support 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 metal plate support 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 containing module are arranged in parallel. This temperature sensing relies on strip printer can realize cutting entirely and half the function, can compatible different external diameters rely on the strip paper, can compatible different specifications beat printer head, and modular structure is convenient for maintain, can realize accurate high-speed printing.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A thermal document strip printer, said thermal document strip printer comprising: the paper feeding device comprises a sheet metal support 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 on the front surface of the main frame (200);

the circuit board (900) is fixed on the back of the main frame (200);

the circuit board (900) is fixed in a closed space formed by the main frame (200) and the paper feeding detection module (700);

the rotating shaft (500) is arranged 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 rotatably connected with the main frame (200) through a rotating shaft (500), and square holes of upper wings on two sides of the cutter module (400) are buckled and locked through bulges on the inner sides of the upper wings of the main frame (200);

the paper containing module (600) is locked and fixed by aligning screws through the conical counter bores on the two side surfaces and the threaded holes on the two side surfaces of the cutter module (400) respectively;

the tension adjusting module (800) is fixedly connected to the back panel of the paper-feeding detection module (700) through convex hull positioning screws in a locking manner;

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.

2. The thermal slip printer of claim 1, wherein the sheet metal support module (100) comprises: the device comprises a sheet metal base (110), a sheet metal side plate I (120), a sheet metal side plate II (130) and a 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 more than 150mm;

and the distance between the first sheet metal side plate (120) and the second sheet metal side plate (130) is 84.5mm.

3. The thermal slip printer of claim 2, wherein the print module (300) comprises a stepper motor (310), a first gear train (320), a fixed tab (330), a print roller (340), a print head (350), a compression spring (360), and a print frame (370);

the fixing adjusting sheet (330) is formed by cutting and processing a slow-moving wire.

4. The thermal slip printer according to claim 3, wherein the fixing adjustment sheet (330) is connected to a flange bearing at one end of the printing rubber roller (340) and one end of the rotation shaft of the printing head (350), respectively, for precisely controlling the relative position between the printing head (350) and the printing rubber roller (340), thereby ensuring the accuracy of the tangent position of the heating line of the printing head (350) and the printing rubber roller (340).

5. The thermal slip printer of claim 4 wherein said cutter module (400) comprises a first small dc motor (410), a worm (420), a helical gear (430), a bi-directional switch (440), a movable blade (450), a fixed blade (460), and a guide cover (470);

one side sector convex part of the bevel gear (430) is matched with the bidirectional switch (440).

6. The thermal slip printer according to claim 5, wherein the shaft (500) penetrates both the lower wing of the main frame (200) and the lower part 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 a preset angle is reached, the bottom surface of the cutter module (400) reaches the inclined surface of the sheet metal bracket module (100) and stops rotating;

the buckling state is locked by the inner side bulge of the upper wing of the main frame (200) and the square hole buckles (480) of the upper wing at the two sides of the cutter module (400).

7. The thermal slip printer according to claim 6, wherein the paper-accommodating module (600) is composed of a second small 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 plate (670) and a paper outlet (680);

the frame body (650) is in a concave shape, and an inner space is formed between the concave part and the cutter module (400);

the movable cover plate (670) can be pulled out upwards and is used for eliminating paper jam faults;

the paper outlet (680) is arranged on the cutter module (400), and a spare connecting hole for installing the paper outlet (680) is reserved on the side surface of the cutter module (400).

8. The thermal slip printer of claim 7, wherein the paper feed detection module (700) comprises a back case (710), a paper feed detection sensor (720);

the paper feeding channel of the back shell (710) is provided with 10 hole sites;

the paper feeding detection sensor (720) is fixed in any hole position through a buckle and 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.

9. The thermal slip printer according to claim 8, wherein the tension adjustment module (800) comprises a sheet metal frame (810), a paper guide shaft (820), a tension spring (830), a left adjustment plate (840), a right adjustment plate (850), a shaft sleeve (860) and a screw (870);

the upper surface of panel beating frame (810) is equipped with laser mark (8101) for mark the position of different receipts strip paper both sides edge.

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