CN115042536B

CN115042536B - Modularized movable cutter mechanism and control method

Info

Publication number: CN115042536B
Application number: CN202210779316.XA
Authority: CN
Inventors: 余雷
Original assignee: Shanghai X-Chang Telecom Ltd
Current assignee: Shanghai X-Chang Telecom Ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2023-09-22
Anticipated expiration: 2042-07-04
Also published as: CN115042536A

Abstract

The invention provides a modularized knife moving mechanism and a control method. The technical scheme of the invention is as follows: the movable cutter mechanism comprises a movable cutter module, a movable cutter driving module and a movable cutter position detection module; the movable knife module comprises a framework body, a movable knife rest and a movable knife, wherein the movable knife rest is arranged on the first side of the framework body and can drive the movable knife to reciprocate in a preset direction under the action of the movable knife driving module; the movable knife driving module is arranged in the framework body and connected with the main control board; the movable cutter position detection module comprises a circuit board connected with the main control board, a photoelectric switch connected with the circuit board and a key film element, wherein the circuit board and the key film element are respectively used for detecting the feeding and withdrawal of the movable cutter; the printer core is semi-inlaid and detachably arranged on the third side of the framework body. The control method is used for realizing feeding and retracting of the closed-loop control knife braking mechanism. According to the invention, the problem that each functional module of a knife moving mechanism and a printer core adopted by the existing 2-inch automatic knife thermal printer are inconvenient to replace can be solved.

Description

Modularized movable cutter mechanism and control method

Technical Field

The invention belongs to the technical field of auxiliary equipment of printers, and particularly relates to a modularized knife moving mechanism and a control method.

Background

With the rapid development of digital information, thermal printing technology is increasingly appearing in the life and work of people in scenes involving the need to print vouchers. For the existing thermal printer, when the thermal printer prints the receipt, the receipt is usually cut off by adopting a cutter system of the thermal printer, so that the receipt is convenient to take off.

Based on the background and the recent trend of miniaturization of thermal printers, 2-inch automatic cutter thermal printers are becoming the mainstream in the industry. However, the existing 2-inch automatic cutter thermal printer mainly has the following problems:

the automatic cutter system adopts an integrated design among all functional modules of the movable cutter mechanism, the movable cutter module of the movable cutter mechanism and the printer core, when a certain functional module of the movable cutter mechanism needs to be replaced for maintenance or adjustment of the function of the movable cutter mechanism, when the printer core needs to be replaced for maintaining or adjusting the printing pressure, the printer core can be realized only by adopting a mode of integrally replacing the combination body of the movable cutter mechanism and the printer core, which is time-consuming and labor-consuming and has poor economical efficiency.

Disclosure of Invention

The invention aims to solve the problem that each functional module of a moving knife mechanism and a printer core adopted by the traditional 2-inch automatic cutter thermal printer are inconvenient to replace.

In order to achieve the above object, the present invention provides a modularized movable knife mechanism and a control method.

According to a first aspect of the present invention, there is provided a modular moving blade mechanism for use in a thermal printing assembly comprising a printer core and a main control panel;

the movable cutter mechanism comprises a movable cutter module, a movable cutter driving module and a movable cutter position detection module;

the movable knife module comprises a framework body, a movable knife rest and a movable knife, wherein the framework body is provided with a first side, a second side and a third side, the first side is opposite to the second side, and the movable knife rest is arranged on the first side of the framework body and can drive the movable knife to reciprocate in a preset direction under the action of external driving force;

the movable cutter driving module is arranged in the framework and comprises a first motor and a stirring piece, and the stirring piece is arranged in linkage with a rotating shaft of the first motor so as to provide the external driving force;

the movable cutter position detection module comprises a circuit board, a photoelectric switch and a key film element, wherein the photoelectric switch and the key film element are electrically connected to the circuit board, the photoelectric switch is used for detecting that the movable cutter is fed in place, and the key film element is used for detecting that the movable cutter is retracted in place;

the printer core is semi-inlaid and detachably arranged on the third side of the framework body;

the first motor and the circuit board are electrically connected with the main control board.

Optionally, the movable knife module further comprises a housing, the skeleton body further has a fourth side opposite to the third side, and opposite first and second ends;

the housing is covered on the framework body, and the second side and the third side are exposed;

a first guide groove is formed in the first end of the framework body, and a first guide rib matched with the first guide groove is formed in the inner side of the first end of the housing;

a second guide groove is formed in the second end of the framework body, and a second guide rib matched with the second guide groove is arranged on the inner side of the second end of the housing.

Optionally, a first positioning column is further arranged at the first end of the framework, a first positioning hole matched with the first positioning column is arranged at the first end of the housing, and one side of the first positioning column, which faces the fourth side of the framework, is provided with a first guiding inclined plane;

the second end of the framework body is further provided with a second positioning column, the second end of the housing is provided with a second positioning hole matched with the second positioning column, and one side, facing the fourth side of the framework body, of the second positioning column is provided with a second guide inclined plane.

Optionally, a portion, opposite to the first motor and the toggle member, on the second side of the skeleton body is an open area, and the moving blade driving module further includes a first cover plate disposed on the second side of the skeleton body and covering the open area, so as to fix the first motor and the toggle member in the skeleton body.

Optionally, the circuit board is a flexible circuit board, and the circuit board is divided into a first sub-circuit board, a second sub-circuit board and a third sub-circuit board;

the first sub-circuit board is arranged in the framework body and positioned below the moving tool rest, and the photoelectric switch is arranged on the first sub-circuit board and faces the moving tool rest;

the second sub-circuit board is arranged on the fourth side of the framework and is attached to the side wall of the housing, the key thin film element is arranged on the second sub-circuit board and faces the moving knife rest, and a trigger element matched with the key thin film element is arranged on the rear edge of the moving knife rest;

the second sub-circuit board and the third sub-circuit board are connected with the first sub-circuit board, and the first sub-circuit board is connected with the main control board through the third sub-circuit board.

Optionally, a circuit board placement area is formed on the first side of the skeleton body in a sunk manner, and the first sub-circuit board is adhered and arranged in the circuit board placement area;

and a circuit board positioning area is inwards arranged on the fourth side of the framework body, and the second sub-circuit board is fixedly arranged on the circuit board positioning area so that the key thin film element and the trigger element are oppositely arranged.

Optionally, the moving knife position detection module further includes a second cover plate, the second cover plate is disposed on the first side of the skeleton body and covers the first sub-circuit board, and a through hole opposite to the photoelectric switch is disposed on the second cover plate.

Optionally, the third sub-circuit is in a strip shape, a first end of the third sub-circuit is connected to the first sub-circuit, and a second end of the third sub-circuit is connected to the main control board through a connector;

the trigger element is a silica gel column.

According to a second aspect of the present invention, there is provided a control method of any one of the above modularized movable knife mechanisms, the control method being applied to the main control board, comprising the steps of:

outputting a first motor forward driving instruction in response to a printing completion signal from the printer core, wherein the first motor forward driving instruction is used for realizing the moving blade feeding;

responding to a moving knife feeding in-place detection signal from the photoelectric switch, stopping outputting the first motor forward driving instruction;

outputting a first motor reverse driving instruction after a preset time interval, wherein the first motor reverse driving instruction is used for realizing the moving knife retracting;

and responding to a moving knife withdrawing in-place detection signal from the key film element, and stopping outputting the first motor reverse driving instruction.

The invention has the beneficial effects that:

according to the modularized movable cutter mechanism, on one hand, the movable cutter module comprises a framework body, and the printer core is semi-inlaid and detachably arranged on the third side of the framework body; on the other hand, the movable cutter mechanism adopts a modularized framework, namely the movable cutter mechanism is divided into a movable cutter module, a movable cutter driving module and a movable cutter position detection module, and the movable cutter module, the movable cutter driving module and the movable cutter position detection module are mutually matched and combined together on the basis of being independently split, and realize cutter feeding and cutter retracting under the closed-loop control of a main control board. According to the two aspects, for the 2-inch automatic cutter thermal printer adopting the modularized movable cutter mechanism, each functional module and the printer core of the movable cutter mechanism can be independently split, so that the printer is convenient to replace. Therefore, the modularized movable cutter mechanism can effectively solve the problem that each functional module and printer core of the movable cutter mechanism adopted by the traditional 2-inch automatic cutter thermal printer are inconvenient to replace.

The control method is used for controlling the modularized movable cutter mechanism so as to realize the feeding and retracting of the closed-loop control based on photoelectric and touch combination, and the control method and the modularized movable cutter mechanism belong to a general inventive concept, and the beneficial effects of the control method and the modularized movable cutter mechanism are not repeated herein.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The invention may be better understood by referring to the following description in conjunction with the accompanying drawings in which the same or similar reference numerals are used throughout the several drawings to designate the same or similar components.

FIG. 1 shows a schematic external view of a modular moving and fixed cutter module and printer cartridge combination according to an embodiment of the present invention;

FIG. 2 shows a schematic external view of a modular movable cutter mechanism according to an embodiment of the present invention;

FIG. 3 illustrates a schematic view of the relative positions of a movable blade, a movable blade carrier, and a skeletal mass in accordance with an embodiment of the present invention;

FIG. 4 illustrates a schematic view of the relative positions of a moving blade carrier and a skeletal mass in accordance with an embodiment of the present invention;

FIG. 5 shows a schematic diagram of the distribution of the first motor and toggle member within the skeleton body, in accordance with an embodiment of the present invention;

FIG. 6 shows a schematic representation of the relative positions of a first motor, toggle member, moving blade holder and moving blade according to an embodiment of the present invention;

FIG. 7 is a schematic diagram showing the relative positions of the optoelectronic switch, the circuit board and the skeleton body according to an embodiment of the invention;

FIG. 8 illustrates a schematic diagram of the relative positions of a movable blade position detection module and a movable blade carrier at one perspective in accordance with an embodiment of the present invention;

FIG. 9 illustrates a schematic diagram of the relative positions of a movable blade position detection module and a movable blade carrier at another perspective in accordance with an embodiment of the present invention;

FIG. 10 shows a schematic structural view of a printer cartridge according to an embodiment of the present invention;

FIG. 11 shows a schematic external view of a stationary knife module according to an embodiment of the invention;

FIG. 12 is a schematic view showing the structure of a skeleton body at one view angle according to an embodiment of the present invention;

FIG. 13 shows a schematic structural view of a skeleton body at another view angle, according to an embodiment of the present invention;

fig. 14 shows a schematic structural view of a housing according to an embodiment of the present invention;

FIG. 15 shows a schematic internal structure of a stationary knife module according to an embodiment of the invention;

FIG. 16 shows a schematic structural view of a setting bed according to an embodiment of the present invention;

FIG. 17 shows a schematic structural view of a stationary knife according to an embodiment of the invention;

FIG. 18 shows a schematic structural view of a stationary blade cover at one viewing angle according to an embodiment of the present invention;

FIG. 19 shows a schematic structural view of a stationary blade cover at another view angle in accordance with an embodiment of the invention;

fig. 20 shows a schematic structural view of a stationary blade cover at still another view angle according to an embodiment of the present invention;

FIG. 21 shows a schematic external view of a combination of a stationary blade module and a printer cartridge according to an embodiment of the invention;

FIG. 22 is a schematic view showing the relative positions of the first cover plate and the skeleton body according to an embodiment of the present invention;

fig. 23 shows a schematic diagram of the relative positions of the second cover plate and the skeleton body according to an embodiment of the invention.

Detailed Description

In order that those skilled in the art will more fully understand the technical solutions of the present invention, exemplary embodiments of the present invention will be described more fully and in detail below with reference to the accompanying drawings. It should be apparent that the following description of one or more embodiments of the invention is merely one or more of the specific ways in which the technical solutions of the invention may be implemented and is not intended to be exhaustive. It should be understood that the technical solution of the present invention may be implemented in other ways belonging to one general inventive concept, and should not be limited by the exemplary described embodiments. All other embodiments, which may be made by one or more embodiments of the invention without inventive faculty, are intended to be within the scope of the invention.

Examples: fig. 1 shows an external view of a combination of a modularized moving knife mechanism, a fixed knife module and a printer core according to an embodiment of the present invention, fig. 2 shows an external view of a modularized moving knife mechanism according to an embodiment of the present invention, fig. 3 shows a schematic view of a relative position of a moving knife, a moving knife rest and a frame body according to an embodiment of the present invention, fig. 4 shows a schematic view of a relative position of a moving knife rest and a frame body according to an embodiment of the present invention, fig. 5 shows a schematic view of a distribution of a first motor and a toggle member in a frame body according to an embodiment of the present invention, fig. 6 shows a schematic view of a relative position of a first motor, a toggle member, a moving knife rest and a moving knife, fig. 7 shows a schematic view of a relative position of a photoelectric switch, a circuit board and a frame body according to an embodiment of the present invention, fig. 8 shows a schematic view of a relative position of a moving knife position detection module and a moving knife rest under one view angle, fig. 9 shows a relative position of a moving knife rest under another view of an embodiment of the present invention, fig. 10 shows a schematic view of a moving knife rest, and a printer core according to an embodiment of the present invention, fig. 11 shows a schematic view of a printer core according to an embodiment of the present invention.

Referring to fig. 1-11, a modular moving blade mechanism and a matched fixed blade module 300 of an embodiment of the present invention form a cutter system, the automatic cutter system is applied to a thermal printing assembly, and the thermal printing assembly comprises a printer core 100 and a main control board;

the modularized movable cutter mechanism comprises a movable cutter module 200, a movable cutter driving module 400 and a movable cutter position detection module 500;

the movable blade module 200 includes a skeleton body 210, a movable blade holder 220, and a movable blade 230, the skeleton body 210 having opposite first and second sides, and a third side; the moving blade holder 220 is disposed on a first side of the frame body 210 and can reciprocate the moving blade 230 in a predetermined direction by an external driving force;

the moving knife driving module 400 is arranged in the framework 210 and comprises a first motor 410 and a stirring piece 420, and the stirring piece 420 is arranged in linkage with a rotating shaft of the first motor 410 so as to provide external driving force for the moving knife rest 220;

the movable knife position detection module 500 comprises a circuit board 510, a photoelectric switch 520 and a key film element 530, wherein the photoelectric switch 520 and the key film element 530 are electrically connected to the circuit board 510, the photoelectric switch 520 is used for detecting that the movable knife 230 is in place when in feeding, and the key film element 530 is used for detecting that the movable knife 230 is in place when in withdrawal;

the printer core 100 is semi-inlaid and detachably arranged on a third side of the framework 210, and comprises a printing head 110, a second motor 120 and a paper winding shaft 130 which is arranged in linkage with a rotating shaft of the second motor 120;

the stationary knife module 300 includes a built-in stationary knife 310, the stationary knife 310 being configured to cooperate with the moving knife 230 in place to cut a receipt output through a gap between the print head 110 and the roll paper shaft 130;

the first motor 410, the circuit board 510, the printhead 110, and the second motor 120 are all electrically connected to the main control board.

In an embodiment of the present invention, printer cartridge 100 is implemented using a standard 2 inch thermal printer cartridge. The modularized movable cutter mechanism provided by the embodiment of the invention is matched with the fixed cutter module 300 and standard 2-inch thermal printer cores with different specifications (working voltages), can be suitable for various application scenes, and realizes the functions of high-voltage high-speed printing cutting, low-voltage high-speed printing cutting and the like.

In the embodiment of the present invention, the stirring member 420 is meshed with the moving tool rest 220, and the first motor 410 and the stirring member 420 are linked through a gear box. The main control board is used for controlling the first motor 410 to rotate forward or reversely, the torque output by the first motor 410 is transmitted to the stirring piece 420 through the gear box, and the stirring piece 420 is used for converting the torque output by the gear box into a linear torque applied to the moving tool rest 220.

Further, fig. 12 shows a schematic structural diagram of a skeleton body under one view angle, fig. 13 shows a schematic structural diagram of a skeleton body under another view angle, and fig. 14 shows a schematic structural diagram of a housing according to an embodiment of the present invention. Referring to fig. 2, 12-14, in an embodiment of the present invention, the movable blade module 200 further includes a housing 240, and the skeleton body 210 further has a fourth side opposite the third side, and opposite first and second ends;

the cover 240 is covered on the frame body 210 and the second side and the third side of the frame body 210 are exposed;

a first guide groove 211 is provided on a first end of the frame body 210, and a first guide rib 241 matched with the first guide groove 211 is provided on an inner side of the first end of the housing 240;

a second guide groove 212 is provided at a second end of the frame body 210, and a second guide rib 242 matched with the second guide groove 212 is provided at an inner side of the second end of the housing 240.

Still further, referring to fig. 12 to 14, in the embodiment of the present invention, a first positioning column 213 is further disposed at a first end of the skeleton body 210, a first positioning hole 243 matched with the first positioning column 213 is disposed at a first end of the housing 240, and a side of the first positioning column 213 facing a fourth side of the skeleton body 210 is configured as a first guiding inclined plane;

a second positioning post 214 is further disposed on the second end of the frame body 210, a second positioning hole 244 matched with the second positioning post 214 is disposed on the second end of the housing 240, and a side of the second positioning post 244 facing the fourth side of the frame body 210 is configured as a second guiding slope.

Still further, fig. 15 shows a schematic internal structure of the stationary knife module according to an embodiment of the present invention, wherein the stationary knife cover is not shown. Referring to fig. 11 and 15, in the embodiment of the present invention, the stationary knife module 300 further includes a stationary knife holder 320, a stationary knife cover 330, and an elastic support 340, the stationary knife holder 320 having a bottom plate;

the fixed knife seat 320 and the fixed knife cover 330 are mutually combined to form a shell with one side open;

the fixed knife 310 is arranged on the fixed knife seat 320 and is obliquely arranged through the elastic supporting body 340, the cutting edge part of the fixed knife 310 is positioned on the open side of the shell, and the distance between the cutting edge part and the bottom plate of the fixed knife seat 320 is larger than the distance between the knife root part of the fixed knife 310 and the bottom plate of the fixed knife seat 320;

the stationary blade cover 330 is in contact with the stationary blade 310.

In the embodiment of the present invention, the fixed blade 310 is obliquely disposed through the elastic support 340, that is, the blade portion of the fixed blade 310 is lifted up relative to the blade root portion thereof, so that the blade portion of the fixed blade 310 is in a close contact state with the blade portion of the movable blade 230 during the feeding process of the movable blade 230, and the fixed blade 310 and the movable blade 230 are better matched to cut printed receipt.

Still further, fig. 16 shows a schematic structural view of a stationary blade holder according to an embodiment of the present invention, and fig. 17 shows a schematic structural view of a stationary blade according to an embodiment of the present invention. Referring to fig. 15-17, in the embodiment of the present invention, the fixed blade holder 320 further has a first end plate, a second end plate, and a side plate, and the first end plate, the second end plate, the side plate, and the bottom plate of the fixed blade holder 320 form a structure with an open top and one side;

a first limiting stop rib 321 is arranged on the inner side of a first end plate of the fixed cutter seat 320, a second limiting stop rib 322 is arranged on the inner side of a second end plate of the fixed cutter seat 320, and a first notch 311 matched with the first limiting stop rib 321 and a second notch 312 matched with the second limiting stop rib 322 are respectively arranged on two ends of a cutting edge part of the fixed cutter 310;

the elastic support 340 includes a first spring 341 and a second spring 342, and the first spring 341 and the second spring 342 are disposed on the bottom plate of the fixed blade holder 320.

In the embodiment of the present invention, the first limiting rib 321 and the second limiting rib 322 disposed on the fixed blade holder 320 and the fixed blade cover 330 together limit the fixed blade 310 to move in a limited moving space to match the movement of the movable blade 230; two spring limiting grooves 329 are formed in the bottom plate of the fixed cutter seat 320, the first spring 341 and the second spring 342 are fixedly arranged in the corresponding spring limiting grooves 329 respectively, the fixed cutter seat 320 and the fixed cutter 310 limit the first spring 341 and the second spring 342 in a limited space together, and the first spring 341 and the second spring 342 only provide an upward cutter edge pretightening force for the fixed cutter 310 and cannot be separated from the fixed cutter module 300.

Still further, fig. 18 shows a schematic structural view of the stationary blade cover at one view angle, fig. 19 shows a schematic structural view of the stationary blade cover at another view angle, and fig. 20 shows a schematic structural view of the stationary blade cover at yet another view angle according to an embodiment of the present invention. Referring to fig. 16 and fig. 18-20, in the embodiment of the present invention, the stationary blade cover 330 includes a top plate, a first end plate, a second end plate, and a side plate, where the top plate, the first end plate, the second end plate, and the side plate of the stationary blade cover 330 form a structure with an open bottom and one side;

a first groove 323, a third guide rib 324 and a second groove 325 are sequentially formed on the side plate of the fixed cutter seat 320 along the extending direction thereof;

a fixed cutter positioning body 350 contacted with the fixed cutter 310 is arranged on the inner side of the top plate of the fixed cutter cover 330, the fixed cutter positioning body 350 and the top plate, the first end plate, the second end plate and the side plate of the fixed cutter cover 330 are surrounded to form a third guide groove 360, and the third guide groove 360 is matched with the third guide rib 324;

a first tongue 331 is formed on a first end plate of the stationary blade cover 330 to match the first groove 323, and a second tongue 332 is formed on a second end plate of the stationary blade cover 330 to match the second groove 325.

Still further, referring to fig. 16, 18 and 19, in the embodiment of the present invention, the first end plate and the first tongue 331 of the fixed blade holder 320 and the second end plate and the second tongue 332 of the fixed blade holder 320 are all fixed by bolts;

a third positioning column 333 is arranged on the first end plate of the fixed cutter cover 330, a third positioning hole 326 matched with the third positioning column 333 is arranged on the first end plate of the fixed cutter seat 320, one side of the third positioning column 333 facing the bottom plate of the fixed cutter seat 320 is provided with a third guiding inclined plane,

a fourth positioning column 334 is arranged on the second end plate of the fixed cutter cover 330, a fourth positioning hole 327 matched with the fourth positioning column 334 is arranged on the second end plate of the fixed cutter seat 320, and one side of the fourth positioning column 334 facing the bottom plate of the fixed cutter seat 320 is provided with a fourth guiding inclined plane.

Still further, fig. 21 is a schematic view showing the appearance of a combination of a stationary blade module and a printer core according to an embodiment of the present invention. Referring to fig. 15, 16 and 21, in the embodiment of the present invention, a sleeving structure 328 is arranged outside the bottom plate of the fixed cutter holder 320, and the sleeving structure 328 has a first opening sleeving part and a second opening sleeving part, which are respectively sleeved on two ends of the paper winding shaft 130.

Still further, fig. 22 is a schematic diagram showing a relative position of the first cover plate and the skeleton body according to an embodiment of the present invention. Referring to fig. 22, in the embodiment of the present invention, a portion of the second side of the backbone body 210 opposite to the first motor 410 and the striking member 420 is an open area, and the moving blade driving module 400 further includes a first cover plate 430 disposed on the second side of the backbone body 210 and covering the open area thereon to fix the first motor 410 and the striking member 420 within the backbone body 210.

Still further, referring to fig. 6 to 9, in the embodiment of the present invention, the circuit board 510 is a flexible circuit board, and the circuit board 510 is divided into a first sub-circuit board 511, a second sub-circuit board 512 and a third sub-circuit board 513;

the first sub-circuit board 510 is disposed in the frame body 210 below the moving blade holder 220, and the photoelectric switch 520 is disposed on the first sub-circuit board 511 and faces the moving blade holder 220;

the second sub-circuit board 512 is disposed on the fourth side of the skeleton body 210 and is attached to the side wall of the housing 240, the key thin film element 530 is disposed on the second sub-circuit board 512 and faces the moving blade holder 220, and the trigger element 223 matched with the key thin film element 530 is disposed on the rear edge of the moving blade holder 220;

the second sub-circuit board 512 and the third sub-circuit board 513 are connected to the first sub-circuit board 511, and the first sub-circuit board 511 is connected to the main control board through the third sub-circuit board 513.

In the embodiment of the present invention, the first sub-circuit board 511, the second sub-circuit board 512 and the third sub-circuit board 513 are integrated, i.e. the circuit board 510 is an independent flexible circuit board, and is not formed by splicing the first sub-circuit board 511, the second sub-circuit board 512 and the third sub-circuit board 513.

Still further, referring to fig. 7, 12 and 13, in the embodiment of the present invention, a circuit board placement area 218 is provided on the first side of the skeleton body 210 in an invaginated manner, and a first sub-circuit board 511 is provided in the circuit board placement area 218 in an adhesive manner;

a circuit board positioning area 219 is disposed on the fourth side of the skeleton body 210 in an invaginated manner, and a second sub-circuit board 512 is fixedly disposed on the circuit board positioning area 219 so that the key thin film element 530 is disposed opposite to the trigger element 223.

Still further, fig. 23 is a schematic diagram showing a relative position of the second cover plate and the skeleton body according to an embodiment of the present invention. Referring to fig. 23, in the embodiment of the present invention, the moving blade position detecting module further includes a second cover 540, the second cover 540 is disposed on the first side of the frame 210 and covers the first sub-circuit board 511, and a through hole 541 opposite to the photoelectric switch 520 is disposed on the second cover 540.

Still further, referring to fig. 6 and fig. 7-9, in the embodiment of the present invention, the third sub-circuit 513 is in a strip shape, a first end of the third sub-circuit 513 is connected to the first sub-circuit 511, and a second end of the third sub-circuit 513 is connected to the main control board through a connector 550;

the trigger element 223 is a silica gel column.

In the embodiment of the present invention, the connector 550 is a ZIF connector, and the first sub-circuit board 511 is connected to the main control board through the third sub-circuit 513 and the connector 550; the first motor 410 is connected with the main control board through a first signal line 440; the printer core 100 is connected to the main control board through a second signal line.

Still further, referring to fig. 6 and 7, in the embodiment of the present invention, fourth guide ribs 221 and fifth guide ribs 222 are provided on the sliding surface of the moving blade holder 220, and fourth guide grooves 215 and fifth guide grooves 216 are provided on the first side of the frame body 210. Wherein fourth guide rib 221 mates with fourth guide slot 215 and fifth guide rib 222 mates with fifth guide slot 216 to achieve sliding guidance of moving blade holder 220 on skeletal frame 210. To achieve foolproof limiting of the moving blade holder 220, the moving blade module 200 is provided with a corresponding forward stop and a reverse stop, wherein the forward stop is implemented with a stop bar 217 formed on a first side of the skeleton 210 and the reverse stop is implemented with the housing 240.

In the embodiment of the present invention, the moving blade 230 has two states of feeding into place and retracting into place. The specific process of feeding in place is as follows: the main control board controls the first motor 410 to rotate forward so that the moving knife rest 220 drives the moving knife 230 to move forward, in the process that the moving knife rest 220 moves forward, the state of the photoelectric switch 520 is changed from being shielded by the moving knife rest 220 to not being shielded, at the moment, the photoelectric switch 520 outputs a moving knife feeding in-place detection signal, and the main control board responds to the moving knife feeding in-place detection signal to control the first motor 410 to stop rotating. At this time, the moving blade 230 is in a feeding in-place state, and the moving blade 230 in the feeding in-place state extends out of the casing 240 for a predetermined length and cooperates with the stationary blade 310 in the stationary blade module 300 to cut the printed receipt. The specific process of retracting the cutter in place is as follows: the main control board controls the first motor 410 to rotate reversely so that the moving blade holder 220 drives the moving blade 230 to rotate backwards, and in the process of the moving blade holder 220 rotating backwards, the state of the key film element 530 is separated from a trigger element on the rear edge of the moving blade holder 220 and is converted into contact with the trigger element, at the moment, the key film element 530 outputs a moving blade returning in-place detection signal, and the main control board responds to the moving blade returning in-place detection signal to control the first motor 410 to stop rotating. At this time, the movable blade 230 is in a retracted state, i.e., the movable blade 230 is retracted to a predetermined position within the movable blade module 200.

In the moving blade feeding in-place state, a safe distance is kept between the moving blade holder 220 and the barrier strip 217; in the retracted state of the movable blade, a second safety distance, i.e., the sum of the thickness of the key thin film element body and the thickness of the trigger element, is maintained between the movable blade holder 220 and the housing 240.

In practical application, the automatic cutter system formed by the modularized movable cutter mechanism and the fixed cutter module 300 of the embodiment of the invention is arranged in the paper bin of the 2-inch automatic cutter thermal printer, the fixed cutter module 300 is detachably and fixedly arranged with the cover plate of the paper bin, and the movable cutter module 200 is detachably and fixedly arranged with corresponding machine components in the paper bin.

Correspondingly, on the basis of the modularized movable cutter mechanism provided by the embodiment of the invention, the embodiment of the invention also provides a control method which is applied to the main control board and used for controlling the modularized movable cutter mechanism provided by the embodiment of the invention.

The control method of the modularized movable knife mechanism comprises the following steps:

responding to a printing completion signal from a printer core, outputting a first motor forward driving instruction which is used for realizing moving knife feeding;

stopping outputting a first motor forward driving instruction in response to a moving knife feeding in-place detection signal from the photoelectric switch;

outputting a first motor reverse driving instruction after a preset time interval, wherein the first motor reverse driving instruction is used for realizing moving and retracting;

and responding to a moving knife retracting detection signal from the key film element, and stopping outputting a first motor reverse driving instruction.

In the embodiment of the invention, the main control board mainly has the following two functions:

1. control the printer core 100 to complete the printing action:

when printing is needed, the main control board transmits the printing signal and the printing content signal to the printer core 100 through the second signal wire, and the printer core 100 drives the second motor 120 to rotate when receiving the printing signal so as to enable the paper roll shaft 130 to feed paper. In the paper feeding process, the thermosensitive device of the print head 110 converts the printing content signal transmitted by the main control board into a thermosensitive signal so as to form printing content on the thermosensitive printing paper, and then obtain the receipt. After the printing is completed, the printer core 100 transmits a printing completion signal to the main board through the second signal line, and the main control board controls the second motor 120 to stop rotating, thereby completing the whole printing action.

2. Controlling an automatic cutter system to cut the receipt:

the main control board outputs a first motor forward driving command to the first motor 410 through the first signal line 440 to control the feeding of the movable blade 230. When the moving blade 230 is in position, the circuit board 510 transmits the moving blade in-position detection signal output by the photoelectric switch 520 to the main control board. After receiving the moving blade feeding in-place detection signal, the main control board stops outputting the first motor forward driving instruction to stop the first motor 410. The moving blade 230 in the advanced state at this time completes the cutting of the receipt by mating with the stationary blade 310 within the stationary blade module 300.

After finishing the cutting of the receipt, the main control board outputs a first motor reverse driving instruction to the first motor 410 through the first signal line 440 to control the knife moving 230 to retract. When the moving blade 230 is retracted in place, the circuit board 510 transmits the moving blade retraction detection signal output by the key film element 530 to the main control board. After receiving the moving blade retracting in-place detection signal, the main control board stops outputting the first motor reverse driving instruction to stop the first motor 410. At this point moving blade 230 and moving blade holder 220 have retracted inside moving blade module 200.

Specifically, when the movable blade 230 is in the retracted state, the photoelectric switch 520 outputs a low level signal, and the key thin film element 530 outputs a low level signal; when the movable blade 230 is in the in-feed state, the photoelectric switch 520 outputs a high level signal, and the key thin film element 530 outputs a high level signal.

Although one or more embodiments of the present invention have been described above, it will be appreciated by those of ordinary skill in the art that the invention can be embodied in any other form without departing from the spirit or scope thereof. The above-described embodiments are therefore intended to be illustrative rather than limiting, and many modifications and substitutions will now be apparent to those of ordinary skill in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. The modularized movable knife mechanism is applied to a thermal printing assembly, and the thermal printing assembly comprises a printer core and a main control board, and is characterized by comprising a movable knife module, a movable knife driving module and a movable knife position detection module;

2. The modular knife mechanism of claim 1, wherein the knife module further comprises a housing, the skeleton further having a fourth side opposite the third side, and opposite first and second ends;

3. The modular knife mechanism of claim 2, wherein a first positioning post is further provided on the first end of the frame body, a first positioning hole matched with the first positioning post is provided on the first end of the housing, and a side of the first positioning post facing the fourth side of the frame body is provided as a first guiding inclined plane;

4. The modular knife mechanism of claim 1, wherein a portion of the second side of the backbone opposite the first motor and the toggle member is an open area, the knife drive module further comprising a first cover plate disposed on the second side of the backbone and covering the open area to secure the first motor and the toggle member within the backbone.

5. The modular knife mechanism of claim 2, wherein the circuit board is a flexible circuit board, the circuit board divided into a first sub-circuit board, a second sub-circuit board, and a third sub-circuit board;

6. The modular knife mechanism of claim 5, wherein a circuit board placement area is recessed on a first side of the skeletal body, the first sub-circuit board being adhesively disposed within the circuit board placement area;

7. The modular knife mechanism of claim 6, wherein the knife position detection module further comprises a second cover plate disposed on the first side of the frame and covering the first sub-circuit board, the second cover plate having a through hole disposed therein opposite the optoelectronic switch.

8. The modular knife mechanism of claim 5, wherein the third sub-circuit board is elongated, a first end of the third sub-circuit board is connected to the first sub-circuit board, and a second end of the third sub-circuit board is connected to the main control board through a connector;

the trigger element is a silica gel column.

9. The control method of the modularized movable knife mechanism as claimed in any one of claims 1 to 8, which is applied to the main control board, wherein the control method comprises the following steps: