CN111619241B - Thermal printer - Google Patents
Thermal printer Download PDFInfo
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- CN111619241B CN111619241B CN202010440384.4A CN202010440384A CN111619241B CN 111619241 B CN111619241 B CN 111619241B CN 202010440384 A CN202010440384 A CN 202010440384A CN 111619241 B CN111619241 B CN 111619241B
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- Prior art keywords
- box body
- thermal paper
- mounting sleeve
- rod
- thermal
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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
- B41J2/335—Structure of 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
- B41J11/0045—Guides for printing 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
- 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
- B41J11/006—Means for preventing paper jams or for facilitating their removal
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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
- B41J29/46—Applications of alarms, e.g. responsive to approach of end of line
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Abstract
The invention belongs to the technical field of thermal printers, and particularly relates to a thermal printer which comprises a first box body, a second box body, a mounting sleeve and a thermal paper winding drum, wherein the first box body is provided with a first opening and a second opening; the first box body and the second box body are both rectangular groove-shaped structures; the ports of the first box body and the second box body are positioned on the same side, and sealing doors are detachably arranged at the ports of the first box body and the second box body; a fixed inserted rod is fixedly arranged on the inner wall of the first box body, which is opposite to the port; the fixed inserted link is sleeved with an installation sleeve, and an annular cavity is arranged inside the installation sleeve; an internal thread baffle disc for limiting the mounting sleeve is arranged at the outer side end of the fixed insertion rod; a thermal paper winding drum is sleeved outside the mounting sleeve; the free end of the thermal paper wound on the thermal paper reel is output through an output roller in the second box body; the outer edge of the mounting sleeve is provided with a tightening rod for tightening the thermal paper roll; the invention can realize the firm connection of the mounting sleeve and the thermal paper roll, and the mounting is fast and convenient.
Description
Technical Field
The invention belongs to the technical field of thermal printers, and particularly relates to a thermal printer.
Background
The principle of a thermal printer is that a transparent film is applied to a light-colored material (usually paper), the film is heated for a period of time to become dark (usually black or blue), an image is formed by heating to produce a chemical reaction in the film, the chemical reaction is carried out at a temperature which accelerates the chemical reaction, the film takes a considerable time, even several years, to become dark when the temperature is below 60 ℃, and the reaction is completed within a few microseconds when the temperature is 200 ℃; the thermal printer selectively heats the thermal paper in defined locations, thereby producing corresponding patterns, the heating being provided by a small electrical heater on the print head in contact with the thermally sensitive material, the heater being logically controlled by the printer in the form of dots or stripes which, when activated, produce a pattern on the thermal paper corresponding to the heating elements, the same logic controlling the heating elements, and the paper feed, thereby printing the pattern on the entire label or sheet.
The prior ticket printers adopted in supermarkets and shops and the portable corrupters on the market are thermal printers, the prior ticket printers are quite common in application but have obvious defects, and the patent with the patent application number of CN201410356354.X provides a thermal paper conveying method of a thermal printer and the thermal printer, and mainly solves the problems that the thermal printer works in high-temperature and high-humidity working environments, when thermal paper is pressed between a printing head and a rubber roller for a long time, a protective layer, a thermal coating and even a base coating on the surface of the thermal paper are likely to be adhered to the surface of the printing head and separated from base paper, and further the printing effect of the printing head is influenced; however, there are still many disadvantages to the ticket printers on the market today: 1. the installation of the thermal paper reel is direct embedded installation, which is inconvenient, and is easy to cause unstable output of the thermal paper and often causes paper jam; 2. when the last remaining paper of the thermal paper is not enough to print one conventional receipt, the printer is still in a running state, the remaining thermal paper is consumed, the customer consumption information is not completely printed, so the receipt is discarded, but because the system detection information is not completely printed, the newly replaced thermal paper can continuously print the remaining consumption information, obviously, two receipts with incomplete information can be thrown away, and the waste of the paper is caused.
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 thermal paper is inconvenient to mount, paper jam is easy to occur and the prior thermal printer often causes paper waste.
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 first box body, a second box body, an internal thread baffle disc, a fixed inserted rod, an installation sleeve and a thermal paper winding drum, wherein the first box body is provided with a first opening; the first box body and the second box body are both rectangular groove-shaped structures; the ports of the first box body and the second box body are positioned on the same side, and sealing doors are detachably arranged at the ports of the first box body and the second box body; a fixed inserted rod is fixedly arranged on the inner wall of the first box body, which is opposite to the port; the fixed inserted link is sleeved with an installation sleeve, and an annular cavity is arranged inside the installation sleeve; an internal thread baffle disc used for limiting the mounting sleeve is arranged at the outer side end of the fixed insertion rod; a thermal paper winding drum is sleeved outside the mounting sleeve; the free end of the thermal paper wound on the thermal paper winding drum is output through an output roller in the second box body; the outer edge of the mounting sleeve is provided with a tightening rod for tightening the thermal paper reel; the tightening rod is of an L-shaped structure; the tightening rod is positioned in the strip-shaped through groove at the edge of the mounting sleeve, and the bending point of the tightening rod is movably hinged on the inner wall of the strip-shaped through groove through a joint rod; the strip-shaped through groove is communicated with an annular cavity in the mounting sleeve; a supporting plate is fixedly arranged on the inner wall of the strip-shaped through groove; the upper surface of the supporting plate is fixedly connected with the top end of the tightening rod through a spring; the bottom end of the tensioning rod is fixedly connected with one end of the pull rope, and the other end of the pull rope extends out of the end face of the mounting sleeve; the free ends of the pull ropes are combined into a bundle through a wire collecting pipe and are fixedly connected with the pull ring; two groups of tightening rods are axially arranged on one outer edge of the mounting sleeve, and the two groups of tightening rods are symmetrically arranged; the bottom end of the tensioning rod far away from the pull ring is fixedly connected with the other group of pull ropes; the free end of the other group of pull ropes passes through a guide ring fixed on the inner wall of the annular cavity and is fixedly connected with the bottom ends of the group of tightening rods close to the pull ring; the guide ring is positioned on one side of the inner wall of the annular cavity, which is far away from the pull ring;
when the device works, the mounting sleeve is sleeved on the fixed inserted link, the internal thread baffle disc is screwed up to limit the mounting sleeve, and then the mounting sleeve and the thermal paper winding drum are rapidly mounted directly by pulling the pull ring; the mounting sleeve can rotate around the fixed inserted link, so that the thermal paper on the thermal paper reel can be output under the output action of the output roller in the second box body, and subsequent printing and output of the receipt are performed; when carrying out the installation of temperature sensing paper reel, can be earlier through the taut stay cord of pull ring, the bottom of stay bar removes to the telescopic both ends of installation under the effect of stay cord this moment, install telescopic top and remove to the telescopic inside of installation simultaneously, can pass the direct cover of stay cord with the temperature sensing paper reel this moment and establish the telescopic outside of installation, the cover is established and is loosened the pull ring after accomplishing, this moment under the effect with backup pad fixed connection's spring, the top of stay bar removes to the direction of keeping away from the installation sleeve once more, thereby prop tightly the inner wall of temperature sensing paper reel, realize the firm connection of installation sleeve and temperature sensing paper reel, and the installation is swift convenient, compare more convenient and can not cause the temperature sensing paper edge to produce the fold because of the extrusion with traditional direct embedded.
Preferably, the inner wall of the annular cavity on the mounting sleeve is provided with a rectangular slot; a rubber diaphragm is fixedly arranged inside the rectangular slot; one side of the rubber diaphragm, which is close to the fixed inserted link, is movably provided with a rubber roller through a U-shaped joint rod; during operation, the rubber roller can reduce the frictional resistance between the inner wall of the mounting sleeve and the fixed inserted rod, so that the rotation of the mounting sleeve is smoother.
Preferably, a spring compression pipe is fixedly arranged at the end part of the mounting sleeve, which is positioned at the outer edge of the pull rope; the spring compression tube is communicated with the interior of the annular cavity; the outer end of the spring compression pipe is fixedly provided with a pressing plate; the pull rope penetrates through the inner part of the spring compression pipe and penetrates through the eccentric position of the pressure plate; the pull rope is fixedly connected with the pressure plate; when the spring compression pipe is in an extrusion state, the rubber diaphragm is in a convex state towards the direction of the fixed inserted rod, and the edge of the rubber roller is in contact with the edge of the fixed inserted rod; when the device works, when the thermal paper reel is installed, the pull rope is pulled through the pull ring, the pull rope moves in the direction far away from the end face of the installation sleeve, the pull rope is fixedly connected with the pressing plate, and the pressing plate is fixedly connected with the spring compression pipe, so that the spring compression pipe can be pulled outwards by the pull rope and is in an unfolded state, after the thermal paper reel is installed, the pull rope is loosened, the spring compression pipe can be compressed again, at the moment, gas in the spring compression pipe can enter the annular cavity to extrude the rubber diaphragm in the direction of the fixed inserted bar, the edge of the rubber roller is in contact with the edge of the fixed inserted bar, the rubber roller slightly extrudes the edge of the fixed inserted bar, the rotation of the installation sleeve at the edge of the fixed inserted bar is more stable, and the phenomenon that the thermal paper is output unevenly due to the eccentric rotation of the installation sleeve at the outer wall of the fixed inserted bar is prevented, thereby avoiding the occurrence of paper jam.
Preferably, an arc-shaped gravity pressing plate is arranged on the top of the first box body and positioned on the upper surface of the thermal paper winding drum; the front end and the rear end of the arc-shaped gravity pressing plate are integrally formed with thermal paper limiting plates; the top end of the arc-shaped gravity pressing plate is fixedly connected with the bottom end of the vertical limiting rod; the top end of the vertical limiting rod penetrates through the top plate of the first box body and is fixedly sleeved with a fixing sleeve; the during operation, the surface of establishing the temperature sensing paper on the temperature sensing paper reel can be pressed all the time to arc gravity clamp plate to can make the laminating degree good between the temperature sensing paper, prevent to appear because the phenomenon that the clearance appears and make the temperature sensing paper can't pull out between the temperature sensing paper, and the temperature sensing paper limiting plate that is located arc heavy clamp plate both ends can carry on spacingly to the both ends of temperature sensing paper, prevents that the temperature sensing paper from taking place the skew at the pull in-process, thereby avoids printing the slope with the typeface on the receipt.
Preferably, the bottom of the arc-shaped gravity pressing plate is provided with a columnar groove; the bottom of the columnar groove is fixedly provided with an electric contact through a spring; an electric contact plate which can be electrically connected with the electric contacts is arranged between the two groups of tightening rods on the outer edge of the mounting sleeve; the thermosensitive paper winding drum is provided with a through hole for passing through the electric contact; the electrical contact and the electrical contact plate are electrically connected with an alarm of the printer and the controller; the during operation, after the temperature sensing paper that is located the temperature sensing paper reel runs out, this moment arc gravity clamp plate can be direct and the surface of temperature sensing paper reel in the mutual contact, the electric contact that is located column recess inside pops out and through the through-hole on the temperature sensing paper reel and the electric touch panel on installation sleeve surface in the effect of spring in this moment, the switch-on of realization circuit this moment, the warning takes place for the alarm, can remind the staff to change the temperature sensing paper reel this moment, the controller is given back to the signal feedback after the circuit switch-on simultaneously, make printer stop work through control circuit behind the controller received information.
Preferably, the first box body and the second box body are detachably connected; the inner side end of the second box body is inserted into the first box body; a horizontal mounting plate is fixedly arranged on the outer side wall of the first box body, which is in contact with the upper surface of the second box body; the horizontal mounting plate is provided with a fastening screw for fixedly mounting the second box body; when the printer works, the fastening screw rod can be unscrewed, so that the displacement between the thermal paper reel positioned in the first box body and the output roller positioned in the second box body is adjusted, the length of the thermal paper between the output roller and the thermal paper reel can be adjusted, when the thermal paper reel is installed, the end part of the thermal paper can be just positioned at the position right above the electric contact plate, and the displacement between the first box body and the second box body is adjusted, so that the thermal paper remained between the top end of the thermal paper reel and the bottom end of the output roller is just the length of a daily receipt, therefore, when the printer is restarted, a complete receipt can be directly printed, in the prior art, the receipt is usually directly printed after the printer is restarted, if the remained paper is not enough for the receipt, the remained information can be continuously printed by using new paper after the printing is finished, and a large amount of thermal paper is wasted, the invention ensures that the finally remained thermal paper can print just one ticket, thereby avoiding the waste of the thermal paper and being more energy-saving and environment-friendly.
Preferably, a limiting rod is fixedly arranged at the bottom end of the thermal paper limiting plate, and the limiting rod is movably inserted into the columnar through groove in the top of the pressing plate; when the device works, the limiting rod can be inserted into the columnar through groove at the top of the pressing plate all the time, so that the arc-shaped gravity pressing plate can be limited, the arc-shaped gravity pressing plate can only move up and down, the position of the arc-shaped gravity pressing plate is prevented from being deviated under the friction force of the thermal paper, and the situation that an electric contact cannot just penetrate through a through hole in a thermal paper winding drum to be contacted with an electric contact plate after the thermal paper is consumed is avoided; meanwhile, the limiting rod can also play a role in limiting the pressing plate in turn, so that the spring compression pipe is always in a good compression state, gas in an annular cavity in the installation sleeve is prevented from leaking, the rubber roller is good in contact with the fixed insertion rod, the installation sleeve can rotate stably all the time, and the output of the thermal sensitive paper is in a stable state.
The invention has the following beneficial effects:
1. according to the thermal printer, the stretching rod and the stretching rope are arranged, when the thermal paper winding drum is installed, the stretching rope can be stretched through the pulling ring, the bottom end of the stretching rod moves towards two ends of the installation sleeve under the action of the stretching rope, the top end of the installation sleeve moves towards the inside of the installation sleeve, the thermal paper winding drum can penetrate through the stretching rope to be directly sleeved on the outer side of the installation sleeve, the pulling ring is loosened after the sleeving is completed, the top end of the stretching rod moves towards the direction far away from the installation sleeve again under the action of the spring fixedly connected with the supporting plate, and therefore the inner wall of the thermal paper winding drum is stretched tightly, the installation sleeve and the thermal paper winding drum are firmly connected, and the installation is rapid and convenient.
2. According to the thermal printer, the spring compression pipe is arranged to compress gas, the compressed gas can enter the annular cavity and the rubber diaphragm protrudes towards the direction of the fixed insertion rod, so that the edge of the rubber roller is in contact with the edge of the fixed insertion rod, the rubber roller has slight extrusion force on the edge of the fixed insertion rod, the rotation of the installation sleeve on the edge of the fixed insertion rod is more stable, the phenomenon that thermal paper is output unevenly due to eccentric rotation of the installation sleeve on the outer wall of the fixed insertion rod is prevented, and the phenomenon of paper jam is avoided.
3. According to the thermal printer, the arc-shaped gravity pressing plate is arranged, so that the thermal paper can be well contacted, the phenomenon that the thermal paper cannot be pulled out due to a large gap between the thermal paper is prevented, and meanwhile, when the thermal paper is consumed to the end, the electric contact at the bottom of the arc-shaped gravity pressing plate can be popped out under the action of the spring and is contacted with the electric contact plate at the edge of the mounting sleeve, so that an alarm is given to remind a worker to replace the paper, and meanwhile, the printing can be suspended; and because the displacement between the first box and the second box can be adjusted, the length of the thermal paper between the output roller and the thermal paper reel can be adjusted, when the thermal paper reel is installed, the end part of the thermal paper can be just positioned at the position right above the electric contact plate, and the displacement between the first box and the second box is adjusted, so that the length of the thermal paper remained between the top end of the thermal paper reel and the bottom end of the output roller is just the length of a daily receipt, therefore, when the printer is restarted, a complete receipt can be directly printed, and the waste of paper is avoided.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic view of a first configuration of the present invention;
FIG. 2 is a schematic view of the internal structure of the mounting sleeve;
FIG. 3 is a schematic view of the electrical contact and the electrical contact plate when electrically connected;
in the figure: first box 1, second box 2, stay cord 3, gag lever post 4, thermal paper limiting plate 5, arc gravity clamp plate 6, spring compression pipe 7, internal thread fender dish 8, clamp plate 9, horizontal mounting board 10, fastening screw 11, vertical gag lever post 12, fixed cover 13, fixed inserted bar 14, rubber roller 15, rubber diaphragm 16, guide ring 17, installation sleeve 18, bar logical groove 19, prop tight pole 20, electric touch panel 21, column recess 22, electric contact 23, thermal paper reel 24.
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 3, a thermal printer according to the present invention includes a first casing 1, a second casing 2, an internal thread catch tray 8, a fixing plunger 14, a mounting sleeve 18, and a thermal paper roll 24; the first box body 1 and the second box body 2 are both rectangular groove body-shaped structures; the ports of the first box body 1 and the second box body 2 are positioned at the same side, and the ports of the first box body 1 and the second box body 2 are detachably provided with sealing doors; a fixed inserted bar 14 is fixedly arranged on the inner wall of the first box body 1 opposite to the port; the fixed inserted link 14 is sleeved with a mounting sleeve 18, and an annular cavity is arranged inside the mounting sleeve 18; the outer side end of the fixed inserted rod 14 is provided with an internal thread baffle disc 8 for limiting the installation sleeve 18; a thermal paper winding drum 24 is sleeved outside the mounting sleeve 18; the free end of the thermal paper wound on the thermal paper reel 24 is output through an output roller in the second box body 2; the outer edge of the mounting sleeve 18 is provided with a tightening rod 20 for tightening a thermal paper reel 24; the tightening rod 20 is of an L-shaped structure; the tightening rod 20 is positioned in the strip-shaped through groove 19 at the edge of the mounting sleeve 18, and the bending point of the tightening rod 20 is movably hinged on the inner wall of the strip-shaped through groove 19 through a link rod; the strip-shaped through groove 19 is communicated with an annular cavity in the mounting sleeve 18; a support plate is fixedly arranged on the inner wall of the strip-shaped through groove 19; the upper surface of the supporting plate is fixedly connected with the top end of the tightening rod 20 through a spring; the bottom end of the tension rod 20 is fixedly connected with one end of the pull rope 3, and the other end of the pull rope 3 extends out of the end face of the mounting sleeve 18; the free ends of the pull ropes 3 are combined into a bundle through a wire collecting pipe and fixedly connected with the pull ring; two groups of tightening rods 20 are axially arranged on one outer edge of the mounting sleeve 18, and the two groups of tightening rods 20 are symmetrically arranged; the bottom end of the bracing rod 20 far away from the pull ring is fixedly connected with the other group of pull ropes 3; the free ends of the other group of pull ropes 3 penetrate through a guide ring 17 fixed on the inner wall of the annular cavity and are fixedly connected with the bottom ends of a group of tightening rods 20 close to the pull ring; the guide ring 17 is positioned on one side of the inner wall of the annular cavity far away from the pull ring;
when the device works, the mounting sleeve 18 can be sleeved on the fixed insertion rod 14, then the internal thread baffle disc 8 is screwed on to limit the mounting sleeve 18, and then the mounting of the mounting sleeve 18 and the thermal paper winding drum 24 can be quickly realized directly by pulling the pull ring; the mounting sleeve 18 can rotate around the fixed inserted link 14, so that the thermal paper on the thermal paper roll 24 can be output under the output action of the output roller in the second box 2 and the subsequent printing and output of the receipt; when carrying out the installation of thermal paper reel 24, can be earlier through the taut stay cord 3 of pull ring, this moment the bottom of bracing pole 20 removes to the both ends of installation sleeve 18 under the effect of stay cord 3, the top of installation sleeve 18 removes to the inside of installation sleeve 18 simultaneously, can pass the direct cover of stay cord 3 with thermal paper reel 24 and establish the outside at installation sleeve 18 this moment, the pull ring is loosened after the cover is established, this moment under the effect with backup pad fixed connection's spring, the top of bracing pole 20 removes to the direction of keeping away from installation sleeve 18 once more, thereby prop tightly the inner wall of thermal paper reel 24, realize the firm connection of installation sleeve 18 and thermal paper reel 24, and the installation is swift convenient, compare more convenient and can not cause the thermal paper edge to produce the fold because of the extrusion with traditional direct embedded.
As an embodiment of the present invention, the inner wall of the annular cavity on the mounting sleeve 18 is provided with a rectangular slot; a rubber diaphragm 16 is fixedly arranged inside the rectangular slot; a rubber roller 15 is movably arranged on one side of the rubber diaphragm 16 close to the fixed inserted rod 14 through a U-shaped section rod; in operation, the rubber roller 15 can reduce the frictional resistance between the inner wall of the mounting sleeve 18 and the fixed inserted link 14, so that the rotation of the mounting sleeve 18 is smoother.
As an embodiment of the invention, the end of the mounting sleeve 18 is fixedly provided with a spring compression tube 7 at the outer edge of the pull rope 3; the spring compression tube 7 is in communication with the interior of the annular cavity; a pressing plate 9 is fixedly arranged at the outer end of the spring compression pipe 7; the pull rope 3 passes through the inside of the spring compression pipe 7 and passes through the eccentric position of the pressure plate 9; the pull rope 3 is fixedly connected with the pressure plate 9; when the spring compression pipe 7 is in an extrusion state, the rubber diaphragm 16 is in a convex state towards the fixed inserted bar 14, and at the moment, the edge of the rubber roller 15 is in contact with the edge of the fixed inserted bar 14; when the installation tool works, when the thermal paper winding drum 24 is installed, the pull rope 3 is pulled through the pull ring, at the moment, the pull rope 3 moves towards the direction far away from the end face of the installation sleeve 18, because the pull rope 3 is fixedly connected with the pressing plate 9, and meanwhile, the pressing plate 9 is fixedly connected with the spring compression pipe 7, the spring compression pipe 7 is pulled outwards by the pull rope 3 and is in an unfolded state, after the thermal paper winding drum 24 is installed, the pull rope 3 is loosened, the spring compression pipe 7 is compressed again, at the moment, the gas in the spring compression pipe 7 enters the annular cavity to extrude the rubber diaphragm 16 towards the direction of the fixed insertion rod 14, so that the edge of the rubber roller 15 is in mutual contact with the edge of the fixed insertion rod 14, and the rubber roller 15 has slight extrusion force on the edge of the fixed insertion rod 14, and therefore, the installation sleeve 18 rotates more stably on the edge of the fixed insertion rod 14, the installation sleeve 18 is prevented from eccentrically rotating on the outer wall of the fixed inserted link 14 to cause uneven output of the thermal paper, thereby avoiding the occurrence of paper jam.
As an embodiment of the invention, an arc-shaped gravity pressing plate 6 is arranged on the top of the first box body 1 and positioned on the upper surface of the thermal paper roll 24; the front end and the rear end of the arc-shaped gravity pressing plate 6 are integrally provided with thermal paper limiting plates 5; the top end of the arc-shaped gravity pressing plate 6 is fixedly connected with the bottom end of the vertical limiting rod 12; the top end of the vertical limiting rod 12 penetrates through the top plate of the first box body 1 and is fixedly sleeved with a fixed sleeve 13; during operation, the surface of the thermal paper on the thermal paper reel 24 can be pressed all the time to arc gravity clamp plate 6 to can make the laminating degree good between the thermal paper, prevent to appear because the phenomenon that the clearance makes the thermal paper can't pull out appears between the thermal paper, and the thermal paper limiting plate 5 that is located 6 both ends of arc gravity clamp plate can carry on spacingly to the both ends of thermal paper, prevent that the thermal paper from taking place the skew at the pull in-process, thereby avoid printing the slope with the typeface on the receipt.
As an embodiment of the present invention, a cylindrical groove 22 is formed at the bottom of the arc-shaped gravity pressing plate 6; the bottom of the columnar groove 22 is fixedly provided with an electric contact 23 through a spring; an electric contact plate 21 which can be electrically connected with an electric contact 23 is arranged between the two groups of tightening rods 20 at the outer edge of the mounting sleeve 18; the thermal paper roll 24 is provided with a through hole for passing through the electrical contact 23; the electric contact 23 and the electric contact plate 21 are electrically connected with an alarm and a controller of the printer; when the printer works, after the thermal paper on the thermal paper reel 24 is consumed, the arc-shaped gravity pressing plate 6 can be directly contacted with the surface of the thermal paper reel 24, the electric contact 23 positioned in the columnar groove 22 is popped out under the action of the spring and is contacted with the electric contact plate 21 on the surface of the mounting sleeve 18 through the through hole in the thermal paper reel 24, the circuit is switched on, the alarm gives an alarm, the worker can be reminded to replace the thermal paper reel 24, meanwhile, the signal is fed back to the controller after the circuit is switched on, and the printer stops working through the control circuit after the controller receives information.
As an embodiment of the present invention, the first box 1 and the second box 2 are detachably connected; the inner side end of the second box body 2 is inserted into the first box body 1; a horizontal mounting plate 10 is fixedly arranged on the outer side wall of the first box body 1, which is in contact with the upper surface of the second box body 2; the horizontal mounting plate 10 is provided with a fastening screw 11 for fixedly mounting the second box body 2; when the printer works, the fastening screw rod 11 can be unscrewed, so that the displacement between the thermal paper roll 24 positioned in the first box body 1 and the output roller positioned in the second box body 2 can be adjusted, the length of the thermal paper between the output roller and the thermal paper roll 24 can be adjusted, when the thermal paper roll 24 is installed, the end part of the thermal paper can be just positioned at the position right above the electric contact plate 21, and the displacement between the first box body 1 and the second box body 2 is adjusted, so that the thermal paper remained between the top end of the thermal paper roll 24 and the bottom end of the output roller is just the length of a daily receipt, therefore, when the printer is restarted, a complete receipt can be directly printed, in the prior art, the printer is usually directly printed after being restarted, if the remained paper is not enough for a receipt, the remained information can be continuously printed by using new paper after the printing is finished, the invention leads the remaining thermal paper to be just enough to print a small ticket, thereby avoiding the waste of the thermal paper and being more energy-saving and environment-friendly.
As an embodiment of the invention, a limiting rod 4 is fixedly arranged at the bottom end of the thermal paper limiting plate 5, and the limiting rod 4 is movably inserted into a cylindrical through groove at the top of a pressing plate 9; when the thermal paper feeding device works, the limiting rod 4 can be inserted into the columnar through groove at the top of the pressing plate 9 all the time, so that the arc-shaped gravity pressing plate 6 can be limited, the arc-shaped gravity pressing plate 6 only can move up and down, the position of the arc-shaped gravity pressing plate 6 is prevented from being deviated under the friction force of the thermal paper, and the situation that the electric contact 23 cannot just penetrate through the through hole in the thermal paper winding drum 24 to be contacted with the electric contact plate 21 after the thermal paper is consumed is avoided; meanwhile, the limiting rod 4 can also play a role in limiting the pressure plate 9 in turn, so that the spring compression pipe 7 is always in a good compression state, gas in an annular cavity in the installation sleeve 18 is prevented from leaking, the rubber roller 15 is good in contact with the fixed insertion rod 14, the installation sleeve 18 can rotate stably all the time, and the output of the thermosensitive paper is in a stable state.
The specific working process of the invention is as follows:
when the device works, the mounting sleeve 18 can be sleeved on the fixed insertion rod 14, then the internal thread baffle disc 8 is screwed on to limit the mounting sleeve 18, and then the mounting of the mounting sleeve 18 and the thermal paper winding drum 24 can be quickly realized directly by pulling the pull ring; the mounting sleeve 18 can rotate around the fixed inserted link 14, so that the thermal paper on the thermal paper roll 24 can be output under the output action of the output roller in the second box 2 and the subsequent printing and output of the receipt; when carrying out the installation of thermal paper reel 24, can be earlier through the taut stay cord 3 of pull ring, this moment the bottom of bracing pole 20 removes to the both ends of installation sleeve 18 under the effect of stay cord 3, the top of installation sleeve 18 removes to the inside of installation sleeve 18 simultaneously, can pass the direct cover of stay cord 3 with thermal paper reel 24 and establish the outside at installation sleeve 18 this moment, the pull ring is loosened after the cover is established, this moment under the effect with backup pad fixed connection's spring, the top of bracing pole 20 removes to the direction of keeping away from installation sleeve 18 once more, thereby prop tightly the inner wall of thermal paper reel 24, realize the firm connection of installation sleeve 18 and thermal paper reel 24, and the installation is swift convenient, compare more convenient and can not cause the thermal paper edge to produce the fold because of the extrusion with traditional direct embedded.
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 (5)
1. A thermal printer, characterized by: comprises a first box body (1), a second box body (2), an internal thread baffle disc (8), a fixed inserted link (14), a mounting sleeve (18) and a thermal paper reel (24); the first box body (1) and the second box body (2) are both rectangular groove-shaped structures; the ports of the first box body (1) and the second box body (2) are positioned on the same side, and sealing doors are detachably arranged at the ports of the first box body (1) and the second box body (2); a fixed inserted rod (14) is fixedly arranged on the inner wall of the first box body (1) opposite to the port; the fixed inserted link (14) is sleeved with a mounting sleeve (18), and an annular cavity is formed in the mounting sleeve (18); an internal thread baffle disc (8) used for limiting the mounting sleeve (18) is arranged at the outer side end of the fixed inserted rod (14); a thermal paper winding drum (24) is sleeved outside the mounting sleeve (18); the free end of the thermal paper wound on the thermal paper reel (24) is output through an output roller in the second box body (2); the outer edge of the mounting sleeve (18) is provided with a tightening rod (20) for tightening a thermal paper reel (24); the tightening rod (20) is of an L-shaped structure; the tightening rod (20) is positioned in the strip-shaped through groove (19) at the edge of the mounting sleeve (18), and the bending point of the tightening rod (20) is movably hinged on the inner wall of the strip-shaped through groove (19) through a joint rod; the strip-shaped through groove (19) is communicated with an annular cavity in the mounting sleeve (18); a supporting plate is fixedly arranged on the inner wall of the strip-shaped through groove (19); the upper surface of the supporting plate is fixedly connected with the top end of the tightening rod (20) through a spring; the bottom end of the tightening rod (20) is fixedly connected with one end of the pull rope (3), and the other end of the pull rope (3) extends out of the end face of the mounting sleeve (18); the free ends of the pull ropes (3) are combined into a bundle through a wire collecting pipe and are fixedly connected with the pull ring; two groups of tightening rods (20) are axially arranged on one outer edge of the mounting sleeve (18), and the two groups of tightening rods (20) are symmetrically arranged; the bottom end of the bracing rod (20) far away from the pull ring is fixedly connected with the other group of pull ropes (3); the free end of the other group of pull ropes (3) passes through a guide ring (17) fixed on the inner wall of the annular cavity and is fixedly connected with the bottom ends of a group of tightening rods (20) close to the pull ring; the guide ring (17) is positioned on one side of the inner wall of the annular cavity, which is far away from the pull ring;
the inner wall of the annular cavity on the mounting sleeve (18) is provided with a rectangular slot; a rubber diaphragm (16) is fixedly arranged inside the rectangular slot; a rubber roller (15) is movably arranged on one side, close to the fixed inserted rod (14), of the rubber diaphragm (16) through a U-shaped section rod;
a spring compression pipe (7) is fixedly arranged at the end part of the mounting sleeve (18) and positioned at the outer edge of the pull rope (3); the spring compression tube (7) is communicated with the interior of the annular cavity; a pressure plate (9) is fixedly arranged at the outer end of the spring compression pipe (7); the pull rope (3) penetrates through the inner part of the spring compression pipe (7) and penetrates through the eccentric position of the pressing plate (9); the pull rope (3) is fixedly connected with the pressing plate (9); when the spring compression pipe (7) is in an extrusion state, the rubber diaphragm (16) is in a convex state towards the direction of the fixed inserted bar (14), and the edge of the rubber roller (15) is in contact with the edge of the fixed inserted bar (14).
2. A thermal printer according to claim 1, wherein: an arc-shaped gravity pressing plate (6) is arranged on the top of the first box body (1) and positioned on the upper surface of the thermal paper winding drum (24); the front end and the rear end of the arc-shaped gravity pressing plate (6) are integrally formed with thermal paper limiting plates (5); the top end of the arc-shaped gravity pressing plate (6) is fixedly connected with the bottom end of the vertical limiting rod (12); the top end of the vertical limiting rod (12) penetrates through the top plate of the first box body (1) and is fixedly sleeved with a fixing sleeve (13).
3. A thermal printer according to claim 2, wherein: a columnar groove (22) is formed in the bottom of the arc-shaped gravity pressing plate (6); the bottom of the columnar groove (22) is fixedly provided with an electric contact (23) through a spring; an electric contact plate (21) which can be electrically connected with an electric contact (23) is arranged between the two groups of tightening rods (20) at the outer edge of the mounting sleeve (18); the thermal paper winding drum (24) is provided with a through hole for passing through the electrical contact (23); the electric contact (23) and the electric contact plate (21) are electrically connected with an alarm of the printer and the controller.
4. A thermal printer according to claim 3, wherein: the first box body (1) and the second box body (2) are detachably connected; the inner side end of the second box body (2) is inserted into the first box body (1); a horizontal mounting plate (10) is fixedly arranged on the outer side wall of the first box body (1) which is in contact with the upper surface of the second box body (2); and the horizontal mounting plate (10) is provided with a fastening screw (11) for fixedly mounting the second box body (2).
5. A thermal printer according to claim 2, wherein: the bottom end of the thermal paper limiting plate (5) is fixedly provided with a limiting rod (4), and the limiting rod (4) is movably inserted into the cylindrical through groove in the top of the pressing plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440384.4A CN111619241B (en) | 2020-05-22 | 2020-05-22 | Thermal printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440384.4A CN111619241B (en) | 2020-05-22 | 2020-05-22 | Thermal printer |
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| Publication Number | Publication Date |
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| CN111619241A CN111619241A (en) | 2020-09-04 |
| CN111619241B true CN111619241B (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010440384.4A Active CN111619241B (en) | 2020-05-22 | 2020-05-22 | Thermal printer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112245821A (en) * | 2020-10-16 | 2021-01-22 | 中国直升机设计研究所 | Cable descending device and cable descending method |
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| CN111619241A (en) | 2020-09-04 |
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Effective date of registration: 20210816 Address after: 518000 floor 1, building 1, zhongkono Industrial Park, Beiqi Road, Hezhou Development Zone, Xixiang street, Bao'an District, Shenzhen, Guangdong Applicant after: SHENZHEN ZKC SOFTWARE TECHNOLOGY Co.,Ltd. Address before: 246002 Fuchun International Garden, 513 Jixian North Road, Daguan District, Anqing City, Anhui Province Applicant before: Cao Lin |
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