CN113928022A - Thermal printer - Google Patents
Thermal printer Download PDFInfo
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- CN113928022A CN113928022A CN202111069307.3A CN202111069307A CN113928022A CN 113928022 A CN113928022 A CN 113928022A CN 202111069307 A CN202111069307 A CN 202111069307A CN 113928022 A CN113928022 A CN 113928022A
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- Prior art keywords
- paper
- shearing
- thermal
- sliding block
- printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/66—Applications of cutting devices
- B41J11/70—Applications of cutting devices cutting perpendicular to the direction of paper feed
- B41J11/706—Applications of cutting devices cutting perpendicular to the direction of paper feed using a cutting tool mounted on a reciprocating carrier
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Abstract
The invention belongs to the technical field of printing, and particularly relates to a thermal printer which comprises a shell, wherein a thermal core is fixedly arranged in the shell, a printing outlet is formed in the lower side of the thermal core in the positive Y direction, a paper guide structure is fixedly arranged in the upper side area, close to the printing outlet, of the surface of the thermal core in the positive Y direction, a shearing device is fixedly arranged on the surface of the paper guide structure in the positive Y direction, the shearing device comprises a shearing box fixedly arranged at the front end of the paper guide structure, and a threaded rod is rotatably arranged in the shearing box. The cutting device can directly cut the printed thermal paper after the printer finishes running, greatly improves the integrity of the cut thermal paper, and avoids the problem that the printing paper is torn due to the fact that a user manually tears the printing paper to separate the printing paper after the printing is finished in the traditional printer, so that the local part of the printing paper is damaged, and the integrity of the displayed content on the printing paper is influenced.
Description
Technical Field
The invention belongs to the technical field of printing, and particularly relates to a thermal printer.
Background
The thermal printer has the working principle that a semiconductor heating element is arranged on a printing head, the printing head can print required patterns after being heated and contacted with thermal printing paper, the principle is similar to that of a thermal fax machine, the images are generated by heating and generating chemical reaction in a film, the chemical reaction of the thermal printer is carried out at a certain temperature, the high temperature can accelerate the chemical reaction, and when the temperature is lower than 60 ℃, the paper can be changed into dark color after a long time, even several years; and when the temperature is 200 ℃, the reaction is completed within several microseconds.
The prior art also has a technical scheme related to thermal printing, for example, chinese patent No. 202011025449.5, a thermal printer includes a thermal printer, a placing mechanism, a placing box, a clamping plate, a cover plate, a compression spring, a feeding chute, a locking mechanism, a winding mechanism, a fixing plate, a rotating shaft, a rubber block, and an extrusion spring. When a large number of notes are printed, one end of the note paper enters the placing box through the feeding groove, the locking mechanism is pressed to enable the cover plate to conveniently slide with the placing box, so that the placing box is opened, paper is favorably connected with the rotating shaft, the rotating shaft cannot be separated from the top of the fixing plate under the action of the two groups of rubber blocks and the extrusion spring, the rotating shaft smoothly rotates inside the placing box, the cover plate is pulled to close the placing box, the position is limited under the action of the locking mechanism, the paper can continuously slide out of the top of the thermal printer when a large number of labels are printed, the paper is favorably pushed to roll inside the placing box, the paper is not disordered, and the paper is protected.
However, the traditional hand-pulling type cutting mode is still used in the scheme, and the mode of manually cutting the thermal paper is quite easy to cause the phenomenon that the printing area is torn due to irregular cutting, so that the invention provides the thermal printer.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problem that the printing area is easily torn due to irregular cutting when the thermal paper is manually cut by the conventional thermal printer, the invention provides the thermal printer which is limited in direction, and all the position and direction limitations in the invention are based on the attached figure 1 of the specification.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a thermal printer, which comprises a shell, wherein a thermal core is fixedly arranged in the shell, a printing outlet is formed in the lower side of the thermal core in the positive Y direction, a paper guide structure is fixedly arranged in the upper side area, close to the printing outlet, of the surface of the thermal core in the positive Y direction, a shearing device is fixedly arranged on the surface of the paper guide structure in the positive Y direction, the shearing device comprises a shearing box fixedly arranged at the front end of the paper guide structure, a threaded rod is rotatably arranged in the shearing box, and the length direction of the threaded rod is the same as the length direction of the shearing box; a placing groove is formed in one end, facing the positive X direction, of the shell, a motor is fixedly mounted inside the placing groove, a threaded rod is fixedly connected with a rotating shaft of the motor, a sliding block is mounted on the threaded rod, the threaded rod penetrates through the sliding block, the threaded rod is connected with the sliding block through threads, a limiting sliding block is arranged on the outer surface of the sliding block in the negative Y direction, a sliding groove is formed in the inner wall of the shearing box, the sliding block is connected with the sliding groove in the inner wall of the shearing box through the limiting sliding block in a sliding mode, a cutter set is fixedly mounted at the lower end of the sliding block, a paper outlet track is fixedly mounted at the lower end of the inner cavity of the shell, the bottom end of the cutter set is located in an area, close to the positive X direction, of the upper end of the paper outlet track is fixedly mounted with an air avoiding piece, and the cutter set and the air avoiding piece are in a cutting fit relation;
when the printer is started, firstly, the thermal paper is printed and output through the thermal core, then the thermal paper is guided into the paper outlet track through the paper guide structure and passes through the lower side of the shearing device, after the printing is finished, the thermal core stops conveying the thermal paper, at the moment, the position of the printing termination line of the thermal paper is positioned on one side of the negative X direction of the cutter set, the motor is started, the motor drives the rotating shaft to rotate, so that the rotating shaft drives the threaded rod to rotate, after the threaded rod rotates, the direction of the sliding block is limited by the limiting sliding block, so that the threaded rod drives the sliding block to stably move on the surface of the threaded rod, after the sliding block moves, the cutter set moves towards one side of the negative X direction, the cutter set shears the printing terminal of the thermal paper through the matching shearing relationship with the clearance avoiding piece, after the shearing is finished, the motor reversely rotates, so that the sliding block drives the cutter set to return to the initial position again, at last manually with the thermal paper from going out orbital positive Y direction port take out can, this device can directly cut the thermal paper after printing after the printer operation finishes, very big improvement the thermal paper integrity after cutting, avoid traditional printer, after printing the completion, the user manually tears printing paper, will beat printing paper and separate, lead to easily beating printing paper and torn, make the local appearance of beating printing paper defective, influence and beat the integrality that shows content on the printing paper.
Preferably, an oil injection pipeline is arranged at one end, facing the positive X direction, of the sliding block, an outlet of the oil injection pipeline is located in a contact area of the sliding block and the threaded rod, an oil injection cavity is arranged on the upper surface, close to the end, facing the positive X direction, of the motor, of the upper surface of the shearing box, a one-way liquid injection valve is arranged at the upper end of the oil injection cavity, an oil outlet pipeline penetrates through the lower end of the oil injection cavity, facing the oil injection pipeline, a vacuum dropper is fixedly mounted at a port of the oil outlet pipeline, the port of the vacuum dropper is opposite to the port of the oil injection pipeline, and the port of the vacuum dropper and the port of the oil injection pipeline are matched with each other;
after the shearing device operates for a certain time, injecting lubricating oil with preset metering into the oil injection cavity, then pressing a maintenance button arranged on the thermal printer to adjust the rotation number of turns of the motor, so that the sliding block can move for a certain distance when returning to the initial position on the threaded rod, so that the port of the oil injection pipeline is contacted with and extruded by a vacuum burette, the internal pressure of the vacuum burette is naturally reduced, the lubricating oil in the oil injection cavity is injected into the oil injection pipeline through the oil outlet pipeline and the vacuum burette, finally the lubricating oil falls on the surface of the threaded rod from the bottom port of the oil injection pipeline, so as to circulate, and finally the lubricating oil in the oil injection cavity is completely delivered to the surface of the threaded rod, after the delivery of the lubricating oil is finished, the maintenance button is released, so that the motor reversely rotates under the control of the internal program of the thermal printer, and the rotation number of turns of the motor is reset again, can avoid oil filling pipeline and vacuum dropper contact, the contact area to threaded rod and sliding block that this device can be quick maintains, very big improvement the operating stability of sliding block and shearing mechanism's whole life, thereby guarantee thermal printer in the use, the operation that the knife tackle can be smooth, avoid appearing the card pause phenomenon, when leading to the knife tackle to cut printing paper, appear scraping, rub, lead to being cut beat printing paper and appear tearing, damaged, influence and beat the integrality that shows information on the printing paper.
Preferably, the knife group comprises a spring column fixedly mounted at the lower end of the sliding block, a fixed plate is fixedly mounted at the lower end of the spring column, a curved mounting clamping rod is fixedly mounted at the lower end of the fixed plate, a shaft rod is rotatably mounted at the lower end of the curved mounting clamping rod, a shearing wheel is fixedly mounted in the middle of the shaft rod, the curved mounting clamping rod, the shaft rod and the shearing wheel are respectively provided with two groups, one group of the shearing wheels is a saw-tooth-shaped cutting edge, and the saw-tooth-shaped cutting edge is arranged at the front end of a cutting operation track;
before shearing, through compression of the spring columns, elastic pressure exists between the lower ends of the shearing wheels and the upper ends of the spacing pieces, when printed paper is sheared, the sliding block drives the cutter group to integrally displace towards the negative X direction, at the moment, the shearing wheels roll at the upper ends of the spacing pieces along with the integral displacement and the influence of the elastic pressure given by the spring columns, at the moment, the shearing wheels with the saw-tooth-shaped blades firstly pre-cut the thermosensitive paper in a dotted line form, and then the shearing wheels with the saw-tooth-shaped blades completely cut the thermosensitive paper immediately after the shearing wheels, so that the shearing track stability of the shearing wheels is improved; because the shearing wheel is of a circular structure, after the cutting is finished, the shearing end part area of the negative X direction of the thermal paper can be kept in an uncut area due to the limitation of the shape of the shearing wheel and the installation positions of the two shearing wheels in the cutter group, and therefore the printed thermal paper after the cutting is finished is locally connected with the thermal paper which is not printed, the situation that the cut thermal paper directly falls off to the ground, and the phenomenon that the printing area of the thermal paper is polluted or the thermal paper is lost is avoided.
Preferably, the upper end of the clearance-avoiding piece is provided with a clearance-avoiding groove, the clearance-avoiding groove is positioned under the shearing wheel, and the cutting edge of the shearing wheel is matched with the clearance-avoiding groove;
in the process of rolling and shearing, the shearing wheel mainly depends on the contact rolling of the bevel edge of the cutting edge and the notch of the clearance groove, the cutting edge at the lowest end of the shearing wheel is in a clearance state, and in the shearing process, the lowest end of the shearing wheel is not in contact with any object except the thermal paper, so that the cutting edge of the shearing wheel is prevented from being damaged due to hard pressure, and the service life of the shearing wheel is greatly prolonged.
Preferably, the lower end of the mounting clamping rod is positioned in the middle of the two groups of paper pressing wheels, the curved mounting clamping rod is not in contact with the paper pressing wheels, and the outer surface of each group of paper pressing wheels is fixedly provided with a soft cotton sleeve;
when the thermal paper is extruded by a hard object, the surface of the thermal paper can generate imprinting marks which can cover a printing area, so that the thermal paper is rolled and sheared by the shearing wheel, the paper pressing wheel synchronously rolls on the surface of the shaft rod and the shearing wheel, the soft cotton sleeve is driven by the paper pressing wheel to roll on the surface of the thermal paper, the thermal paper in the shearing process is enabled to form a pressing effect, meanwhile, the surface information of the thermal paper is completely stored in the extrusion process through the flexible material of the soft cotton sleeve, and the phenomenon that the marks are left on the thermal paper when the thermal paper is directly extruded by the hard paper pressing wheel to influence the reading of the content on the thermal paper by a user is avoided.
Preferably, the outer surface of the soft cotton sleeve is provided with a plurality of groups of U-shaped grooves which are distributed spirally, and the spiral directions of the U-shaped grooves on the soft cotton sleeve at the two sides of the shearing wheel are opposite;
in the process of pressing and fixing the thermal paper by the soft cotton sleeve, the spiral U-shaped groove on the surface of the soft cotton sleeve enables the soft cotton sleeve to generate transverse acting force on the thermal paper below the soft cotton sleeve, and simultaneously, the spiral directions of the U-shaped grooves on the soft cotton sleeve on the two sides of the shearing wheel are opposite, so that the transverse acting force from the soft cotton sleeve on the thermal paper is opposite in direction, the thermal paper with wrinkles can be pushed to the two sides, the shearing leveling effect of the thermal paper is further improved, the thermal paper is prevented from being wrinkled, and when the cutter set shears the thermal paper, the shearing wheel and the thermal paper in the cutter set are scraped and rubbed, and the thermal paper is torn and damaged.
The invention has the following beneficial effects:
1. according to the thermal printer, the threaded rod is driven to rotate by the motor, the sliding block is enabled to stably move on the surface of the threaded rod, the sliding block drives the cutter group to synchronously move, the cutter group and the clearance piece are matched to cut the tail end of output thermal paper, the device can directly cut the printed thermal paper after the printer finishes running, the integrity of the cut thermal paper is greatly improved, and the situation that in the traditional printer, after printing is finished, a user manually tears the printing paper to separate the printing paper, the printing paper is torn, the local part of the printing paper is damaged, and the integrity of display contents on the printing paper is influenced is avoided.
2. According to the thermal printer, due to the limitation of the self circular structure of the shearing wheel, after the shearing is finished, the area close to one end of the thermal paper in the negative X direction can be kept in an uncut state, so that the printed thermal paper after the shearing is finished is locally connected with the unprinted thermal paper, and the phenomenon that the sheared thermal paper directly falls off to the ground and the printing area of the thermal paper is polluted or the thermal paper is lost is avoided.
3. According to the thermal printer, when the thermal printer is used for shearing, the shearing wheel mainly rolls by means of the contact of the oblique edge of the cutting edge and the notch of the clearance groove, the cutting edge at the lowest end of the shearing wheel is in the clearance state, and the lowest end of the shearing wheel is not in contact with any object except the thermal paper in the shearing process, so that the cutting edge of the shearing wheel is slightly stressed by hard pressure, and the service life of the shearing wheel is greatly prolonged.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial cross-sectional view of the shearing device of the present invention;
FIG. 3 is an enlarged view of a portion of the invention at A in FIG. 2;
FIG. 4 is a cross-sectional view of a shearing device of the present invention;
FIG. 5 is an enlarged view of a portion of the invention at B in FIG. 4;
FIG. 6 is an enlarged view of a portion of the invention at C in FIG. 5;
fig. 7 is a view of the shear wheel of the present invention in cooperation with a clearance groove.
In the figure: 1. a housing; 2. a paper discharge rail; 3. a heat-sensitive movement; 4. a paper guide structure; 5. a shearing device; 6. a motor; 51. a cutting box; 52. a threaded rod; 53. a slider; 54. a knife group; 55. an anti-void sheet; 56. an oil injection cavity; 57. an oil outlet pipeline; 58. a vacuum dropper; 59. an oil injection pipeline; 531. a limiting slide block; 541. a spring post; 542. a fixing plate; 543. a curved mounting clamping bar; 545. a shaft lever; 546. a shear wheel; 547. a paper pressing wheel; 548. a soft cotton sleeve; 551. and (5) avoiding a clearance groove.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below with the specific embodiments, the orientation is limited, and all the position and the direction in the invention are defined by taking the attached figure 1 of the specification as a reference.
As shown in fig. 1 to 7, the thermal printer of the present invention includes a housing 1, a thermal core 3 is fixedly installed inside the housing 1, a printing outlet is opened on the lower side of the thermal core 3 in the positive Y direction, a paper guide structure 4 is fixedly installed on the upper side area of the surface of the thermal core 3 in the positive Y direction close to the printing outlet, a cutting device 5 is fixedly installed on the surface of the paper guide structure 4 in the positive Y direction, the cutting device 5 includes a cutting box 51 fixedly installed at the front end of the paper guide structure 4, a threaded rod 52 is rotatably installed inside the cutting box 51, and the length direction of the threaded rod 52 is the same as the length direction of the cutting box 51; a placing groove is formed in one end, facing the positive X direction, of the shell 1, a motor 6 is fixedly mounted inside the placing groove, the threaded rod 52 is fixedly connected with a rotating shaft of the motor 6, a sliding block 53 is mounted on the threaded rod 52, the threaded rod 52 penetrates through the sliding block 53, the threaded rod 52 is in threaded connection with the sliding block 53, a limiting sliding block 531 is arranged on the outer surface of the sliding block 53 in the negative Y direction, a sliding groove is formed in the inner wall of the shearing box 51, the sliding block 53 is in sliding connection with the sliding groove in the inner wall of the shearing box 51 through the limiting sliding block 531, a knife set 54 is fixedly mounted at the lower end of the sliding block 53, a paper outlet track 2 is fixedly mounted at the lower end of the inner cavity of the shell 1, the bottom end of the knife set 54 is located in an area, close to the positive X direction, of the upper end of the paper outlet track 2 is fixedly mounted with a blank avoiding piece 55, the cutter group 54 and the clearance sheet 55 are in a cutting fit relationship;
1 when the printer is started, firstly, the thermal paper is printed and output by the thermal core 3, then the thermal paper is guided into the paper outlet track 2 by the paper guide structure 4 and passes through the lower side of the cutting device 5, when the thermal core 3 stops conveying the thermal paper after the printing is finished, the position of the printing termination line of the thermal paper is at the negative X direction side of the knife tackle 54, then the motor 6 is started, the motor 6 drives the rotating shaft to rotate, the rotating shaft drives the threaded rod 52 to rotate, when the threaded rod 52 rotates, the direction of the sliding block 53 is limited by the limiting slide block 531, the threaded rod 52 drives the sliding block 53 to stably move on the surface, when the sliding block 53 moves, the knife tackle 54 moves towards the negative X direction side, and the knife tackle 54 cuts the printing terminal of the thermal paper through the matching cutting relation with the clearance avoiding piece 55, after the cutting is finished, motor 6 reversal operation, make sliding block 53 drive knife tackle 54 get back to the initial position again, it can to take out thermal paper from play paper track 2's positive Y direction port at last manually, this device can directly cut the thermal paper after printing after the printer operation finishes, very big improvement the thermal paper integrity after cutting, avoid traditional printer, after printing the completion, the manual printing paper that tears of user, to beat printing paper and separate, lead to beating easily to beat printing paper and be torn, make the local appearance of beating printing paper defective, influence the integrality that shows content on beating printing paper.
As an embodiment of the invention, an oil injection pipeline 59 is arranged at one end of the sliding block 53 facing the positive X direction, an outlet of the oil injection pipeline 59 is positioned in a contact area between the sliding block 53 and the threaded rod 52, an oil injection cavity 56 is arranged on the upper surface of the shear box 51, which is close to the upper surface of one end of the motor 6 facing the positive X direction, an one-way oil injection valve is arranged at the upper end of the oil injection cavity 56, an oil outlet pipeline 57 penetrates through the lower end of the oil injection cavity 56 facing the oil injection pipeline 59, a vacuum dropper 58 is fixedly mounted at a port of the oil outlet pipeline 57, and a port of the vacuum dropper 58 is opposite to a port of the oil injection pipeline 59 and matched with the port;
after the shearing device 5 operates for a certain time, injecting lubricating oil with preset metering into the oil injection cavity 56, then pressing a maintenance button arranged on the thermal printer, adjusting the rotation number of the motor 6, so that the sliding block 53 can move for a certain distance when returning to the initial position on the threaded rod 52, the port of the oil injection pipeline 59 is contacted with and extruded by the vacuum dropper 58, at the moment, the internal pressure of the vacuum dropper 58 is naturally reduced, the lubricating oil in the oil injection cavity 56 is injected into the oil injection pipeline 59 through the oil outlet pipeline 57 and the vacuum dropper 58, finally the lubricating oil falls on the surface of the threaded rod 52 from the bottom port of the oil injection pipeline 59, circulating the lubricating oil, finally, completely delivering the lubricating oil in the oil injection cavity 56 to the surface of the threaded rod 52, after the delivery of the lubricating oil is finished, releasing the maintenance button, and enabling the motor 6 to reversely rotate under the control of the internal program of the thermal printer, make its rotation number of turns reset again, can avoid oil injection pipeline 59 and vacuum burette 58 contact, this device can be quick maintains threaded rod 52 and sliding block 53's contact area, very big improvement sliding block 53's operating stability and shearing mechanism 5's whole life, thereby guarantee thermal printer in the use, knife tackle 54 can smooth operation, avoid appearing the card pause phenomenon, when leading to knife tackle 54 to cut printing paper, appear scraping, rub, lead to the typewriter paper that is cut appearing tearing, the damage, influence the integrality of the last display information of typewriter paper.
As an embodiment of the present invention, the knife set 54 includes a spring post 541 fixedly installed at a lower end of the sliding block 53, a fixing plate 542 is fixedly installed at a lower end of the spring post 541, a curved installation clamping rod 543 is fixedly installed at a lower end of the fixing plate 542, a shaft 545 is rotatably installed at a lower end of the curved installation clamping rod 543, a cutting wheel 546 is fixedly installed at a middle position of the shaft 545, two sets of the curved installation clamping rod 543, the shaft 545 and the cutting wheel 546 are respectively provided, one set of the cutting wheel 546 is a saw-tooth-shaped cutting edge, and the saw-tooth-shaped cutting edge is at a front end of a cutting operation track;
2 before cutting, through the compression of the spring columns 541, elastic pressure exists between the lower ends of the shearing wheels 546 and the upper ends of the clearance sheets 55, when the printing paper is cut, the sliding block 53 drives the cutter set 54 to integrally displace towards the negative X direction, at this time, the shearing wheels 546 roll at the upper ends of the clearance sheets 55 along with the integral displacement and the influence of the elastic pressure given by the spring columns 541, at this time, the shearing wheels 546 with saw-tooth-shaped blades firstly pre-cut the thermosensitive paper in a dotted line form, and then the shearing wheels 546 with saw-tooth-shaped blades completely cut the thermosensitive paper immediately after the other group of shearing wheels 546, so that the stability of the shearing track of the shearing wheels 546 is improved; because the cutting wheels 546 are circular in structure, after the cutting is completed, the cutting end area of the thermal paper in the negative X direction is kept in an uncut area by the shape of the cutting wheels 546 and the limitation of the installation positions of the two cutting wheels 546 in the cutter group 54, and therefore, the printed thermal paper after the cutting is completed is locally connected with the unprinted thermal paper, so that the phenomenon that the cut thermal paper directly falls off to the ground, and the printing area of the thermal paper is polluted or the thermal paper is lost is avoided.
As an embodiment of the present invention, the upper end of the clearance-avoiding piece 55 is provided with a clearance-avoiding groove 551, the clearance-avoiding groove 551 is located right below the shear wheel 546, and the cutting edge of the shear wheel 546 matches with the clearance-avoiding groove 551;
3 in the process of rolling shearing, the shearing wheel 546 mainly depends on the contact and rolling of the oblique edge of the blade and the notch of the clearance groove 551, the cutting edge at the lowest end of the shearing wheel 546 is in a clearance state, and in the shearing process, the lowest end of the shearing wheel 546 is not in contact with any object except the thermal paper, so that the blade of the shearing wheel 546 is prevented from being damaged due to hard pressure, and the service life of the shearing wheel 546 is greatly prolonged.
As an embodiment of the present invention, paper pressing wheels 547 are symmetrically installed at two ends of the shaft 545, the lower end of the curved installation clamping rod 543 is located in the middle of the two paper pressing wheels 547, the curved installation clamping rod 543 and the paper pressing wheels 547 are not in contact with each other, and a soft cotton sleeve 548 is fixedly installed on the outer surface of each paper pressing wheel 547;
4 when the thermal paper is squeezed by a hard object, the surface of the thermal paper generates imprinting marks which can cover a printing area, therefore, when the shearing wheel 546 rolls and shears the thermal paper, the paper pressing wheel 547 rolls on the surface of the shaft lever 545 and the shearing wheel 546 synchronously, the paper pressing wheel 547 drives the soft cotton sleeve 548 to roll on the surface of the thermal paper, so that the thermal paper in the shearing process is pressed, meanwhile, the surface information of the thermal paper in the squeezing process is completely stored through the flexible material of the soft cotton sleeve 548, and the phenomenon that when the hard paper pressing wheel 547 is directly used for squeezing the thermal paper, the marks are left on the thermal paper, and the reading of the content on the thermal paper is influenced by a user.
As an embodiment of the present invention, the outer surface of the soft cotton cover 548 is provided with a plurality of groups of "U" shaped grooves, the "U" shaped grooves are spirally distributed, and the spiral directions of the U-shaped grooves on the soft cotton cover 548 at both sides of the shearing wheel 546 are opposite;
5 in the process of pressing and fixing the thermal paper by the soft cotton cover 548, the spiral U-shaped groove on the surface of the soft cotton cover 548 enables the soft cotton cover 548 to generate a transverse acting force on the thermal paper below the soft cotton cover 548, and simultaneously, the spiral directions of the U-shaped grooves on the soft cotton cover 548 on the two sides of the shearing wheel 546 are opposite, so that the transverse acting force from the soft cotton cover 548 on the thermal paper is opposite in direction, the thermal paper with folds can be pushed to the two sides, the shearing leveling effect of the thermal paper is further improved, the thermal paper is prevented from being folded, and when the cutter group 54 shears the thermal paper, the shearing wheel 546 and the thermal paper in the cutter group 54 are scraped and rubbed, and the thermal paper is torn and damaged.
The specific working process is as follows:
when the printer is started, firstly, the thermal paper is printed and output through the thermal core 3, then the thermal paper is guided into the paper outlet track 2 through the paper guide structure 4 and passes through the lower side of the cutting device 5, when the thermal core 3 stops conveying the thermal paper after the printing is finished, the position of the printing termination line of the thermal paper is at the negative X direction side of the cutter set 54, then the motor 6 is started, the motor 6 drives the rotating shaft to rotate, the rotating shaft drives the threaded rod 52 to rotate, when the threaded rod 52 rotates, the direction of the sliding block 53 is limited through the limiting sliding block 531, the threaded rod 52 drives the sliding block 53 to stably move on the surface, when the sliding block 53 moves, the cutter set 54 moves towards the negative X direction side, and the cutter set 54 cuts the printing terminal of the thermal paper through the matching cutting relation with the clearance avoiding piece 55, after the cutting is finished, the motor 6 runs reversely, so that the sliding block 53 drives the cutter group 54 to return to the initial position again, and finally the thermal paper is manually taken out from the positive Y-direction port of the paper outlet track 2; when the printing paper is cut, the sliding block 53 drives the cutter group 54 to integrally displace in the negative X direction, at this time, the cutting wheel 546 rolls at the upper end of the clearance piece 55 along with the integral displacement and the influence of elastic pressure given by the spring post 541, at this time, the cutting wheel 546 with the saw-tooth-shaped blade firstly performs pre-cutting in a dotted line form on the thermal paper, and then the cutting wheel 546 of the other group of cutting wheels 546 completely cuts the thermal paper immediately after, so that the stability of the cutting track of the cutting wheel 546 is improved; since the cutting wheels 546 are circular, when the cutting is completed, the cutting end regions of the thermal paper in the negative X direction are kept as uncut regions by the shape of the cutting wheels 546 and the limitation of the installation positions of the two cutting wheels 546 in the cutter group 54, and thus the printed thermal paper after the cutting is completed is partially connected with the non-printed thermal paper; in the process of rolling cutting, the cutting wheel 546 mainly depends on the contact rolling of the oblique edge of the blade and the notch of the clearance groove 551, the cutting edge at the lowest end of the cutting wheel 546 is in a clearance state, and in the cutting process, the lowest end of the cutting wheel 546 is not in contact with any object except the thermal paper, so that the blade of the cutting wheel 546 is prevented from being damaged due to hard pressure; when the shearing wheel 546 rolls and shears the thermal paper, the paper pressing wheel 547 rolls on the surface of the shaft lever 545 synchronously with the shearing wheel 546, the paper pressing wheel 547 drives the soft cotton sleeve 548 to roll on the surface of the thermal paper, so that the thermal paper in the shearing process is pressed, and meanwhile, the surface information of the thermal paper in the extruding process is completely stored through the flexible material of the soft cotton sleeve 548; in the process that the soft cotton cover 548 presses and fixes the thermal paper, the spiral U-shaped grooves on the surface of the soft cotton cover 548 enable the soft cotton cover 548 to generate transverse acting force on the thermal paper below the soft cotton cover 548, and meanwhile, the spiral directions of the U-shaped grooves on the soft cotton cover 548 on the two sides of the shearing wheel 546 are opposite, so that the transverse acting force from the soft cotton cover 548 on the thermal paper is opposite in direction, the folded thermal paper can be pushed to the two sides, and the shearing and flattening effect of the thermal paper is further improved; after the shearing device 5 operates for a certain time, injecting lubricating oil with preset metering into the oil injection cavity 56, then pressing a maintenance button arranged on the thermal printer, adjusting the rotation number of the motor 6, so that the sliding block 53 can move for a certain distance when returning to the initial position on the threaded rod 52, the port of the oil injection pipeline 59 is contacted with and extruded by the vacuum dropper 58, at the moment, the internal pressure of the vacuum dropper 58 is naturally reduced, the lubricating oil in the oil injection cavity 56 is injected into the oil injection pipeline 59 through the oil outlet pipeline 57 and the vacuum dropper 58, finally the lubricating oil falls on the surface of the threaded rod 52 from the bottom port of the oil injection pipeline 59, circulating the lubricating oil, finally, completely delivering the lubricating oil in the oil injection cavity 56 to the surface of the threaded rod 52, after the delivery of the lubricating oil is finished, releasing the maintenance button, and enabling the motor 6 to reversely rotate under the control of the internal program of the thermal printer, the rotation turns of the cutting device are reset again, so that the oil injection pipeline 59 is prevented from being contacted with the vacuum dropper 58, the device can quickly maintain the contact area of the threaded rod 52 and the sliding block 53, and the operation stability of the sliding block 53 and the whole service life of the cutting device 5 are greatly improved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A thermal printer, characterized by: the paper guide mechanism comprises a shell (1), wherein a thermal sensitive core (3) is fixedly mounted inside the shell (1), a printing outlet is formed in the lower side of the thermal sensitive core (3) in the positive Y direction, a paper guide structure (4) is fixedly mounted on the surface of the thermal sensitive core (3) in the positive Y direction close to the upper side area of the printing outlet, a shearing device (5) is fixedly mounted on the surface of the paper guide structure (4) in the positive Y direction, the shearing device (5) comprises a shearing box (51) fixedly mounted at the front end of the paper guide structure (4), a threaded rod (52) is rotatably mounted inside the shearing box (51), and the length direction of the threaded rod (52) is the same as that of the shearing box (51); a placing groove is formed in one end, facing the positive X direction, of the shell (1), a motor (6) is fixedly mounted inside the placing groove, a threaded rod (52) is fixedly connected with a rotating shaft of the motor (6), a sliding block (53) is mounted on the threaded rod (52), the threaded rod (52) penetrates through the sliding block (53), the threaded rod (52) is in threaded connection with the sliding block (53), a limiting sliding block (531) is arranged on the outer surface of the sliding block (53) in the negative Y direction, a sliding groove is formed in the inner wall of the shearing box (51), the sliding block (53) is in sliding connection with the sliding groove in the inner wall of the shearing box (51) through the limiting sliding block (531), a knife tackle (54) is fixedly mounted at the lower end of the inner cavity of the shell (1), a paper outlet track (2) is fixedly mounted at the lower end of the knife tackle (54), and the bottom end of the knife tackle (54) is located at the upper end, close to the positive X direction, of the paper outlet track (2), the upper end fixed mounting of going out paper track (2) has and keeps away blank piece (55), for cutting cooperation relation between knife tackle (54) and the piece of keeping away blank (55).
2. The thermal printer of claim 1, wherein: sliding block (53) have been seted up towards the one end of positive X direction and have been annotated oil duct (59), the export of annotating oil duct (59) is located sliding block (53) and threaded rod (52) contact area, be close to motor (6) on the upper surface of shearing box (51) and seted up notes oil pocket (56) towards the one end upper surface of positive X direction, the upper end of annotating oil pocket (56) is provided with one-way notes liquid valve, the lower extreme of annotating oil pocket (56) runs through towards the direction of annotating oil duct (59) and has seted up oil outlet pipe (57), the port fixed mounting of oil outlet pipe (57) has vacuum burette (58), the port of vacuum burette (58) is just to the port of annotating oil duct (59), and mutually match between the two.
3. The thermal printer of claim 1, wherein: knife tackle (54) include spring post (541) of fixed mounting at sliding block (53) lower extreme, the lower extreme fixed mounting of spring post (541) has fixed plate (542), the lower extreme fixed mounting of fixed plate (542) has curved shape installation clamping bar (543), the lower extreme rotation of curved shape installation clamping bar (543) installs axostylus axostyle (545), the intermediate position fixed mounting of axostylus axostyle (545) has shearing wheel (546), curved shape installation clamping bar (543), axostylus axostyle (545), shearing wheel (546) all are provided with two sets ofly, and one of them set of shearing wheel (546) is the sawtooth-shaped cutting edge, the cutting edge of sawtooth-shaped is at the front end of cutting orbit.
4. A thermal printer according to claim 3, wherein: the upper end of the clearance-avoiding piece (55) is provided with a clearance-avoiding groove (551), the clearance-avoiding groove (551) is positioned under the shearing wheel (546), and the cutting edge of the shearing wheel (546) is matched with the clearance-avoiding groove (551).
5. A thermal printer according to claim 3, wherein: the paper pressing wheels (547) are symmetrically installed at two ends of the shaft rod (545), the lower ends of the curved installation clamping rods (543) are located in the middle of the two paper pressing wheels (547), the curved installation clamping rods (543) are not in contact with the paper pressing wheels (547), and soft cotton sleeves (548) are fixedly installed on the outer surface of each paper pressing wheel (547).
6. The thermal printer according to claim 5, wherein: the outer surface of the soft cotton cover (548) is provided with a plurality of groups of U-shaped grooves which are distributed spirally, and the spiral directions of the U-shaped grooves on the soft cotton cover (548) on the two sides of the shearing wheel (546) are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111069307.3A CN113928022A (en) | 2021-09-13 | 2021-09-13 | Thermal printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111069307.3A CN113928022A (en) | 2021-09-13 | 2021-09-13 | Thermal printer |
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| Publication Number | Publication Date |
|---|---|
| CN113928022A true CN113928022A (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111069307.3A Pending CN113928022A (en) | 2021-09-13 | 2021-09-13 | Thermal printer |
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| CN (1) | CN113928022A (en) |
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