CN111532031B - Thermal printer - Google Patents
Thermal printer Download PDFInfo
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- CN111532031B CN111532031B CN202010442695.4A CN202010442695A CN111532031B CN 111532031 B CN111532031 B CN 111532031B CN 202010442695 A CN202010442695 A CN 202010442695A CN 111532031 B CN111532031 B CN 111532031B
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- paper
- rotating wheel
- air
- mounting groove
- paper roll
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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
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
- B41J15/042—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles for loading rolled-up continuous copy material into printers, e.g. for replacing a used-up paper roll; Point-of-sale printers with openable casings allowing access to the rolled-up continuous copy material
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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
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
- B41J15/046—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles for the guidance of continuous copy material, e.g. for preventing skewed conveyance of the continuous copy material
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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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/12—Guards, shields or dust excluders
- B41J29/13—Cases or covers
Abstract
The invention belongs to the technical field of printers, and particularly relates to a thermal printer which comprises a body; the top of the body is provided with a paper outlet; a mounting groove is formed in the body on one side of the paper outlet, a rotating wheel is arranged at the position, far away from one side of the paper outlet, of the upper part of the mounting groove, and a rotating shaft of the rotating wheel is embedded into the side wall of the mounting groove and is rotatably connected with the mounting groove; one side of the rotating wheel is fixedly connected with a cover plate, the bottom of the mounting groove is provided with a paper frame, a pair of vertically arranged feeding rollers are rotatably connected in the body of one side of the paper frame, which is close to the paper outlet, and the feeding rollers are driven by a motor; an arc-shaped elastic sheet is arranged between the feeding roller and the paper frame and is fixedly connected with the paper frame through a bracket; according to the invention, the paper roll is rotated to enable the matched elastic sheet to be tightly attached to the paper roll, so that the paper head of the paper roll is quickly guided to the position between the feeding rollers, and the filling operation of the paper roll is completed.
Description
Technical Field
The invention belongs to the technical field of printers, and particularly relates to a thermal printer.
Background
A side slope Printer (Printer) is one of the output devices of a computer for printing the results of the computer's processing on the relevant media. The indexes for measuring the quality of the printer comprise three items: print resolution, print speed and noise. There are many types of printers, and an impact printer and a non-impact printer are classified according to whether or not a printing element strikes paper. Full-font character printers and dot matrix character printers are classified according to the character structure to be printed. A line printer is divided into a serial printer and a line printer in such a manner that a line character is formed on a paper. According to the adopted technology, the printer is divided into a column type, a spherical type, an ink jet type, a thermal type, a laser type, an electrostatic type, a magnetic type, a light emitting diode type and the like.
The thermal printer has a working principle that a semiconductor heating element is arranged on a printing head, and the printing head can print required patterns after being heated and contacting thermal printing paper, and the principle of the thermal printer is similar to that of a thermal fax machine. The image is generated by heating to cause a chemical reaction in the film. The chemical reaction of the thermal printer is carried out at a certain temperature. High temperatures accelerate this chemical reaction. When the temperature is lower than 60 ℃, the paper needs to be changed into dark color for a long time, even for several years; and when the temperature is 200 ℃, the reaction is completed within several microseconds.
Some technical schemes related to printers also appear in the prior art, for example, a chinese patent with application number 2019109936147 discloses a thermal printer, which comprises a base, a shell assembly, a paper guide mechanism, a transmission mechanism, a heat dissipation mechanism and a thermal printing head, wherein the shell assembly is installed at the top of the base, a cavity is formed between the shell assembly and the base, a heat insulation plate is installed in the cavity between the shell assembly and the base, a paper penetrating port is formed in the heat insulation plate, the paper guide mechanism is installed in the cavity on one side of the heat insulation plate, the transmission mechanism is installed on the shell assembly on one side of the paper guide mechanism, the heat dissipation mechanism is installed on the shell assembly, and the thermal printing head is installed on the shell assembly on the top of the paper guide mechanism. According to the invention, the influence of opening the cover and replacing the thermal sensitive paper tube on the thermal sensitive printing head is avoided through the arranged shell assembly, the paper guide mechanism is used for transmitting and limiting the paper, unqualified printing caused by the deviation of the paper is avoided, the limiting adjustment is convenient, the transmission mechanism is used for reducing the energy consumption, and the heat radiation mechanism is used for improving the heat radiation performance of the thermal sensitive printing head through heat transfer heat radiation and air circulation; however, when the printing paper roll is replaced with a new one after the printing paper in the existing printer is used up, the paper head of the paper roll needs to be manually peeled off, and the paper head of the guide paper roll is fed into the feeding roller, so that the replacement can be smoothly completed, the replacement time is increased, and the working efficiency of the printer is reduced.
Disclosure of Invention
The invention provides a thermal printer, which aims to make up the defects of the prior art and solve the problems that after printing paper in the prior printer is used up, when a new printing paper roll is replaced, the paper head of the paper roll needs to be manually stripped, the paper head of a guide paper roll is fed into a feed roller, the replacement can be smoothly completed, the replacement time is prolonged, and the working efficiency of the printer is reduced.
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 body; the top of the body is provided with a paper outlet; a mounting groove is formed in the body on one side of the paper outlet, a rotating wheel is arranged at the position, far away from one side of the paper outlet, of the upper part of the mounting groove, and a rotating shaft of the rotating wheel is embedded into the side wall of the mounting groove and is in rotating connection with the mounting groove; one side of the rotating wheel is fixedly connected with a cover plate, the bottom of the mounting groove is provided with a paper frame, a pair of vertically arranged feeding rollers are rotationally connected in the body of one side of the paper frame, which is close to the paper outlet, and the feeding rollers are driven by a motor; an arc-shaped elastic sheet is arranged between the feeding roller and the paper frame and is fixedly connected with the paper frame through a support; the elastic sheet is used for increasing the paper head sending efficiency of the paper roll; the during operation, with the apron upset and open, later will print the scroll of usefulness and put into the paper frame, rotate the scroll simultaneously and make the cooperation shell fragment paste tight scroll for the stub of scroll is guided fast to the feed roller between, accomplishes the operation of filling of scroll, compares during the stub of the manual scroll of guiding of prior art sends into the feed roller, improves the installation effectiveness of scroll, and then increases the use convenience of printer.
Preferably, the mounting groove above the paper frame is rotatably connected with a side roller, and the side roller abuts against the paper roll to prevent the paper roll from displacing; a belt is sleeved between the periphery of the side roller and the rotating shaft, and the belt drives the side roller to rotate so as to increase the paper feeding efficiency; support spacingly to columniform scroll both ends through the side roller, reduce the dislocation of scroll, carry out anticlockwise rotation and when closing the lid simultaneously at the apron, it is rotatory with the pivot to drive the runner through the apron, and then through belt drive side roller anticlockwise rotation, through making the side roller drive scroll anticlockwise rotation, the more efficient drives the scroll and rotates, thereby increase the efficiency that the head was guided by the shell fragment, reduce the work of manual rotatory scroll, further increase the installation effectiveness of scroll.
Preferably, the rotating wheel is an eccentric wheel, and the axis of the rotating shaft is positioned at the upper part of the axis of the rotating wheel; a support plate is fixedly connected to the side wall of the mounting groove at a position corresponding to the bottom of the rotating wheel, and an air bag attached to the rotating wheel is arranged at the upper part of the support plate; the bottom of the cover plate is provided with an arc-shaped supporting plate, and the supporting plate is matched with the paper frame to limit the dislocation of the paper roll; the bottom of the supporting plate is provided with a group of air injection holes which are obliquely arranged; the bottom of the gas orifice is provided with a gas passage which is communicated with the air bag through a gas pipe; air is sprayed out through the air spraying holes, so that the turnover of the paper head is reduced, and the feeding efficiency of the paper head is further increased; because the runner is the eccentric wheel, when making the apron drive the runner and revolve the rotation of axes, the runner bottom rotates and extrudees the gasbag, make the gasbag produce compressed air, compressed air fills in the air flue through the trachea, at last spout through the fumarole, the fagging is at the drive of apron and is close to scroll upper portion this moment, the direction of rotation of air current guide scroll paper head through fumarole spun this moment, reduce the head of scroll and fold crooked, and then the card is between fagging and scroll, further increase the smooth rotation of scroll, make things convenient for the paper head to send into between the feed roller through the guide of shell fragment, increase the installation efficiency of taking one's place of scroll, and then realize fast that the consumptive material installation of printer takes one's place, practice thrift the scroll change time, improve the availability factor of printer.
Preferably, the side wall of the mounting groove is provided with an air valve which is connected in series with the middle part of the air pipe, and when the cover plate rotates and is pressed downwards, the air valve is opened, so that the air flow impact force of the air injection hole is increased, and the feeding efficiency of the paper head is further increased; rotate through the apron and drive the fagging and be close the scroll, and then carry on spacingly to the scroll, prevent the scroll because the not hard up of scroll, cause the scroll not hard up, the excessive perk of scroll, and then the better guide scroll of cooperation fumarole rotates, trigger the pneumatic valve when closing through the apron is close simultaneously, make compressed air in the gasbag spout through the fumarole in the twinkling of an eye, and then make and save more compressed air in the gasbag, increase fumarole blowout compressed air's impact force simultaneously, the paper end card that further reduces the scroll periphery goes into the clearance between scroll and the fagging, the installation efficiency of taking one's place of further increase scroll.
Preferably, the periphery of the rotating wheel is fixedly connected with an elastic rope, a cavity is formed in the body corresponding to the rotating wheel, talcum powder is filled in the cavity, and a through hole is formed in one side of the cavity close to the rotating wheel; the inner wall of the cavity is fixedly connected with an elastic rope, and the other end of the elastic rope penetrates through the through hole and then penetrates through a gap between the rotating wheel and the air bag and is fixedly connected with the rotating wheel; the talcum powder is brought out through the elastic rope, so that the abrasion of the air bag is reduced; when apron anticlockwise rotation closes the lid, it is rotatory through the runner, it revolutes the rotation of runner periphery to drive the elasticity rope, and then make the elasticity rope draw long, the elasticity rope links firmly with the cavity inner wall after running through the through-hole, link firmly with the runner after passing the clearance between runner and the gasbag, make the elasticity rope carry out through the through-hole with partial talcum powder in the cavity, the talcum powder gets into the clearance between gasbag and the runner through the elasticity rope, and then increase the lubrication between runner and the gasbag, increase opening and closing efficiency of apron, reduce the wearing and tearing of gasbag simultaneously, the life of extension gasbag, further guarantee printer normal work.
Preferably, the outer periphery of the rotating wheel is provided with an arc-shaped groove corresponding to the elastic rope, and the abrasion of the elastic rope is reduced through the arc-shaped groove; because the arc wall has been seted up with the elasticity rope correspondence position in the runner periphery for during the runner rotates elasticity rope embedding arc wall, reduce the elasticity rope when flexible and the gasbag between the friction, and then guarantee the life of elasticity rope, increase the free tensile deformation of elasticity rope through the arc wall simultaneously, and then make the talcum powder more quick fill go into the clearance between runner and the gasbag, provide good lubrication for the gasbag, prolong the life of gasbag, further guarantee the printer and normally work.
The invention has the following beneficial effects:
1. according to the thermal printer, the paper roll is rotated to enable the matched elastic sheet to be tightly attached to the paper roll, so that the paper head of the paper roll is quickly guided to the position between the feeding rollers, and the filling operation of the paper roll is completed.
2. According to the thermal printer, the supporting plate is driven to be close to the paper roll through the rotation of the cover plate, so that the paper roll is limited, the paper head is prevented from loosening due to the paper roll, the air valve is triggered when the cover plate is closed, more compressed air is accumulated in the air bag, the impact force of the compressed air sprayed by the air spraying holes is increased, and the mounting and positioning efficiency of the paper roll is further increased.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
in the figure: the paper feeding device comprises a body 1, a paper outlet 11, a mounting groove 12, a rotating wheel 13, a rotating shaft 14, a cover plate 15, a paper frame 16, a feeding roller 17, an elastic sheet 18, a side roller 2, a belt 21, a support plate 22, an air bag 23, a support plate 24, an air jet hole 25, an air channel 26, an air pipe 27, an air valve 28, an elastic rope 3, a cavity 32, a through hole 33 and an arc-shaped groove 34.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, a thermal printer according to the present invention includes a main body 1; the top of the body 1 is provided with a paper outlet 11; a mounting groove 12 is formed in the body 1 on one side of the paper outlet 11, a rotating wheel 13 is arranged at a position, far away from one side of the paper outlet 11, of the upper part of the mounting groove 12, and a rotating shaft 14 of the rotating wheel 13 is embedded into the side wall of the mounting groove 12 and is rotatably connected with the mounting groove 12; a cover plate 15 is fixedly connected to one side of the rotating wheel 13, a paper frame 16 is arranged at the bottom of the mounting groove 12, a pair of vertically arranged feeding rollers 17 are rotatably connected to the body 1 on one side of the paper frame 16 close to the paper outlet 11, and the feeding rollers 17 are driven by a motor; an arc-shaped elastic sheet 18 is arranged between the feeding roller 17 and the paper frame 16, and the elastic sheet 18 is fixedly connected with the paper frame 16 through a support; the elastic sheet 18 is used for increasing the paper head sending efficiency of the paper roll; the during operation, with apron 15 upset and open, later will print the scroll of usefulness and put into paper frame 16, rotate the scroll simultaneously and make cooperation shell fragment 18 paste tight scroll for the stub of scroll is guided fast to feeding between the roller 17, accomplishes the operation of filling of scroll, compares the stub of the manual guide scroll of prior art and sends into feeding roller 17, improves the installation effectiveness of scroll, and then increases the use convenience of printer.
In one embodiment of the present invention, a side roller 2 is rotatably connected to the mounting groove 12 above the paper frame 16, and the side roller 2 abuts against the paper roll to prevent the paper roll from being displaced; a belt 21 is sleeved between the periphery of the side roller 2 and the rotating shaft 14, and the belt 21 drives the side roller 2 to rotate to increase the paper feeding efficiency; support spacingly to columniform scroll both ends through side roller 2, reduce the dislocation of scroll, carry out anticlockwise rotation and when closing the lid simultaneously at apron 15, it is rotatory with pivot 14 to drive runner 13 through apron 15, and then drive 2 anticlockwise rotations of side roller through belt 21, through making side roller 2 drive scroll anticlockwise rotation, the more efficient drives the scroll and rotates, thereby increase the efficiency that the head was guided by shell fragment 18, reduce the work of manual rotatory scroll, further increase the installation effectiveness of scroll.
As an embodiment of the present invention, the rotating wheel 13 is an eccentric wheel, and the axis of the rotating shaft 14 is located at the upper part of the axis of the rotating wheel 13; a support plate 22 is fixedly connected to the side wall of the mounting groove 12 at a position corresponding to the bottom of the rotating wheel 13, and an air bag 23 attached to the rotating wheel 13 is arranged at the upper part of the support plate 22; an arc-shaped supporting plate 24 is arranged at the bottom of the cover plate 15, and the supporting plate 24 is matched with the paper frame 16 to limit dislocation of the paper roll; a group of air injection holes 25 are formed in the bottom of the supporting plate 24, and the air injection holes 25 are obliquely arranged; the bottom of the air injection hole 25 is provided with an air passage 26, and the air passage 26 is communicated with the air bag 23 through an air pipe 27; air is sprayed out through the air spraying holes 25, so that the turnover of the paper head is reduced, and the feeding efficiency of the paper head is further increased; because the rotating wheel 13 is an eccentric wheel, when the cover plate 15 drives the rotating wheel 13 to rotate around the rotating shaft 14, the bottom of the rotating wheel 13 rotates and extrudes the air bag 23, the air bag 23 generates compressed air, the compressed air is filled into the air passage 26 through the air pipe 27 and is finally ejected through the air ejecting holes 25, the supporting plate 24 is driven by the cover plate 15 to be close to the upper part of the paper roll, the air ejected through the air ejecting holes 25 guides the rotating direction of the paper roll paper head, the folding and bending of the head part of the paper roll are reduced, the paper roll is clamped between the supporting plate 24 and the paper roll, the smooth rotation of the paper roll is further increased, the paper head is conveniently conveyed into the feeding roller 17 through the guiding of the elastic sheet 18, the paper roll mounting and positioning efficiency is increased, the consumable mounting and positioning of the printer are rapidly realized, the paper roll replacing time is saved, and the use efficiency of the printer is improved.
As an embodiment of the invention, an air valve 28 is arranged on the side wall of the mounting groove 12, the air valve 28 is connected in series in the middle of the air pipe 27, and when the cover plate 15 rotates and is pressed downwards, the air valve 28 is opened, so that the air flow impact force of the air injection hole 25 is increased, and the feeding efficiency of the paper head is further increased; rotate through apron 15 and drive fagging 24 and be close the scroll, and then carry on spacingly to the scroll, prevent the scroll because the not hard up of scroll, cause the scroll not hard up, the excessive perk of scroll, and then the better guide scroll of cooperation fumarole 25 rotates, trigger pneumatic valve 28 when being close through apron 15 simultaneously, make compressed air in the gasbag 23 spout through fumarole 25 in the twinkling of an eye, and then make and save more compressed air in the gasbag 23, increase fumarole 25 blowout compressed air's impact force simultaneously, the clearance between scroll and the fagging 24 is gone into to the scroll card of further reduction scroll periphery, the installation efficiency of taking one's place of further increase scroll.
As an embodiment of the invention, the periphery of the rotating wheel 13 is fixedly connected with the elastic rope 3, a cavity 32 is arranged in the body 1 corresponding to the rotating wheel 13, talcum powder is filled in the cavity 32, and a through hole 33 is arranged on one side of the cavity 32 close to the rotating wheel 13; the inner wall of the cavity 32 is fixedly connected with the elastic rope 3, and the other end of the elastic rope 3 penetrates through the through hole 33, penetrates through the gap between the rotating wheel 13 and the air bag 23 and is fixedly connected with the rotating wheel 13; the talcum powder is brought out through the elastic rope 3, so that the abrasion of the air bag 23 is reduced; when apron 15 anticlockwise rotation and closing the lid, it is rotatory through runner 13, it rotates around runner 13 periphery to drive elasticity rope 3, and then make elasticity rope 3 stretch out and become long, elasticity rope 3 links firmly with cavity 32 inner wall after running through-hole 33, link firmly with runner 13 after passing the clearance between runner 13 and the gasbag 23, make elasticity rope 3 carry out the partial talcum powder in cavity 32 through-hole 33, the talcum powder gets into the clearance between gasbag 23 and the runner 13 through elasticity rope 3, and then increase the lubrication between runner 13 and the gasbag 23, increase the opening and the closing efficiency of apron 15, reduce the wearing and tearing of gasbag 23 simultaneously, prolong the life of gasbag 23, further guarantee printer normal work.
As an embodiment of the invention, an arc-shaped groove 34 is formed on the outer periphery of the rotating wheel 13 at a position corresponding to the elastic rope 3, and the abrasion of the elastic rope 3 is reduced through the arc-shaped groove 34; because runner 13 periphery and elasticity rope 3 correspond the position and have seted up arc wall 34, elasticity rope 3 imbeds in the arc wall 34 when making runner 13 rotate, reduce elasticity rope 3 when flexible and gasbag 23 between the friction, and then guarantee the life of elasticity rope 3, increase the free tensile deformation of elasticity rope 3 through arc wall 34 simultaneously, and then make the talcum powder clearance between runner 13 and the gasbag 23 of packing that is faster, provide good lubrication for gasbag 23, prolong the life of gasbag 23, further guarantee the printer normal work.
During operation, the cover plate 15 is turned over and opened, then a paper roll for printing is placed in the paper frame 16, the paper roll is rotated simultaneously, the matched elastic sheet 18 is tightly attached to the paper roll, so that the paper head of the paper roll is quickly guided to the position between the feeding rollers 17, and the filling operation of the paper roll is completed; the two ends of the cylindrical paper roll are supported and limited through the side rollers 2, so that dislocation of the paper roll is reduced, meanwhile, when the cover plate 15 rotates anticlockwise and covers the cover plate, the cover plate 15 drives the rotating wheel 13 and the rotating shaft 14 to rotate, the side rollers 2 are driven to rotate anticlockwise through the belt 21, the paper roll is driven to rotate anticlockwise through the side rollers 2, the paper roll is driven to rotate more efficiently, the efficiency of guiding the paper head by the elastic sheet 18 is increased, the work of manually rotating the paper roll is reduced, and the installation efficiency of the paper roll is further increased; because the rotating wheel 13 is an eccentric wheel, when the cover plate 15 drives the rotating wheel 13 to rotate around the rotating shaft 14, the bottom of the rotating wheel 13 rotates and extrudes the air bag 23, so that the air bag 23 generates compressed air, the compressed air is filled into the air passage 26 through the air pipe 27 and is finally ejected through the air ejecting holes 25, at the moment, the supporting plate 24 is driven by the cover plate 15 to be close to the upper part of the paper roll, at the moment, the air ejected through the air ejecting holes 25 guides the rotating direction of the paper roll paper head, the folding and bending of the head part of the paper roll are reduced, and the paper roll is clamped between the supporting plate 24 and the paper roll, so that the smooth rotation of the paper roll is further increased, the paper head is conveniently conveyed into the feeding roller 17 through the guiding of the elastic sheet 18, the mounting and positioning efficiency of the paper roll is increased, the consumable mounting and positioning of the printer are quickly realized, the paper roll replacing time is saved, and the use efficiency of the printer is improved; the cover plate 15 rotates to drive the supporting plate 24 to be close to the paper roll, so that the paper roll is limited, paper roll looseness caused by paper roll looseness is prevented, the paper head is excessively tilted and is better matched with the air jet holes 25 to guide the paper head to rotate, meanwhile, the air valve 28 is triggered when the cover plate 15 is close to be closed, compressed air in the air bag 23 is instantly ejected through the air jet holes 25, further, more compressed air is accumulated in the air bag 23, the impact force of the compressed air ejected from the air jet holes 25 is increased, the paper head clamping of the periphery of the paper roll into a gap between the paper roll and the supporting plate 24 is further reduced, and the paper roll installation and positioning efficiency is further increased; when the cover plate 15 rotates anticlockwise and is covered, the rotating wheel 13 rotates to drive the elastic rope 3 to rotate around the periphery of the rotating wheel 13, so that the elastic rope 3 is lengthened, the elastic rope 3 penetrates through the through hole 33 and then is fixedly connected with the inner wall of the cavity 32, and penetrates through the gap between the rotating wheel 13 and the air bag 23 and then is fixedly connected with the rotating wheel 13, so that part of talcum powder in the cavity 32 is carried out by the elastic rope 3 through the through hole 33, the talcum powder enters the gap between the air bag 23 and the rotating wheel 13 through the elastic rope 3, so that the lubrication between the rotating wheel 13 and the air bag 23 is increased, the opening and closing efficiency of the cover plate 15 is increased, meanwhile, the abrasion of the air bag 23 is reduced, the service life of the air bag 23 is prolonged, and the normal work of a printer is further ensured; because runner 13 periphery and elasticity rope 3 correspond the position and have seted up arc wall 34, elasticity rope 3 imbeds in the arc wall 34 when making runner 13 rotate, reduce elasticity rope 3 when flexible and gasbag 23 between the friction, and then guarantee the life of elasticity rope 3, increase the free tensile deformation of elasticity rope 3 through arc wall 34 simultaneously, and then make the talcum powder clearance between runner 13 and the gasbag 23 of packing that is faster, provide good lubrication for gasbag 23, prolong the life of gasbag 23, further guarantee the printer normal work.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
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 (4)
1. A thermal printer, characterized by: comprises a body (1); the top of the body (1) is provided with a paper outlet (11); a mounting groove (12) is formed in the body (1) on one side of the paper outlet (11), a rotating wheel (13) is arranged at the position, far away from one side of the paper outlet (11), of the upper portion of the mounting groove (12), and a rotating shaft (14) of the rotating wheel (13) is embedded into the side wall of the mounting groove (12) and is rotatably connected with the mounting groove (12); a cover plate (15) is fixedly connected to one side of the rotating wheel (13), a paper frame (16) is arranged at the bottom of the mounting groove (12), a pair of vertically arranged feeding rollers (17) is rotatably connected to the body (1) on one side of the paper frame (16) close to the paper outlet (11), and the feeding rollers (17) are driven by a motor; an arc-shaped elastic sheet (18) is arranged between the feeding roller (17) and the paper frame (16), and the elastic sheet (18) is fixedly connected with the paper frame (16) through a support; the elastic sheet (18) is used for increasing the paper head sending efficiency of the paper roll; the mounting groove (12) above the paper frame (16) is rotatably connected with a side roller (2), and the side roller (2) supports against a paper roll to prevent the paper roll from moving; a belt (21) is sleeved between the periphery of the side roller (2) and the rotating shaft (14), and the belt (21) drives the side roller (2) to rotate to increase the paper feeding efficiency; the rotating wheel (13) is an eccentric wheel, and the axis of the rotating shaft (14) is positioned at the upper part of the axis of the rotating wheel (13); a support plate (22) is fixedly connected to the side wall of the mounting groove (12) and the position corresponding to the bottom of the rotating wheel (13), and an air bag (23) attached to the rotating wheel (13) is arranged at the upper part of the support plate (22); an arc-shaped supporting plate (24) is arranged at the bottom of the cover plate (15), and the supporting plate (24) is matched with the paper frame (16) to limit dislocation of the paper roll; a group of air injection holes (25) are formed in the bottom of the supporting plate (24), and the air injection holes (25) are obliquely arranged; the bottom of the air injection hole (25) is provided with an air passage (26), and the air passage (26) is communicated with the air bag (23) through an air pipe (27); air is ejected through the air ejection holes (25), so that the turnover of the paper head is reduced, and the feeding efficiency of the paper head is further increased.
2. A thermal printer according to claim 1, wherein: the side wall of the mounting groove (12) is provided with an air valve (28), the air valve (28) is connected in series in the middle of the air pipe (27), and when the cover plate (15) rotates and is pressed down, the air valve (28) is opened, so that the air flow impact force of the air injection hole (25) is increased, and the feeding efficiency of the paper head is further increased.
3. A thermal printer according to claim 2, wherein: the periphery of the rotating wheel (13) is fixedly connected with an elastic rope (3), a cavity (32) is formed in the body (1) and corresponds to the rotating wheel (13), talcum powder is filled in the cavity (32), and a through hole (33) is formed in one side, close to the rotating wheel (13), of the cavity (32); the inner wall of the cavity (32) is fixedly connected with an elastic rope (3), and the other end of the elastic rope (3) penetrates through the through hole (33) and then penetrates through a gap between the rotating wheel (13) and the air bag (23) to be fixedly connected with the rotating wheel (13); the talcum powder is brought out by the elastic rope (3), so that the abrasion of the air bag (23) is reduced.
4. A thermal printer according to claim 3, wherein: the periphery of the rotating wheel (13) is provided with an arc-shaped groove (34) corresponding to the elastic rope (3), and the abrasion of the elastic rope (3) is reduced through the arc-shaped groove (34).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010442695.4A CN111532031B (en) | 2020-05-22 | 2020-05-22 | Thermal printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010442695.4A CN111532031B (en) | 2020-05-22 | 2020-05-22 | Thermal printer |
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| CN111532031B true CN111532031B (en) | 2021-09-21 |
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| CN111532031A (en) | 2020-08-14 |
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