CN113844179B

CN113844179B - Thermal printer

Info

Publication number: CN113844179B
Application number: CN202111056729.7A
Authority: CN
Inventors: 李增武; 徐小倩; 田钦; 王耀杰; 何军强
Original assignee: Hangzhou Hopechart Iot Technology Co ltd
Current assignee: Hangzhou Hopechart Iot Technology Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-06-07
Anticipated expiration: 2041-09-09
Also published as: CN113844179A

Abstract

The invention relates to the technical field of printing equipment, and provides a thermal printer, which comprises: the pressing roller is used for driving printing paper to output; press the material piece including separating fender portion and connecting separate the connecting portion at fender portion both ends, the connecting portion cover is established the compression roller is in the outside, separate fender portion with form the play paper passageway that is used for the transmission to beat printing paper between the compression roller the exit end of play paper passageway, separate fender portion to be constructed with the orientation the convex first bulge of compression roller is in order to reduce separate fender portion with interval between the compression roller. The thermal printer provided by the invention is used for solving the defect that paper is easy to jam in the printing paper output process in the prior art, the paper jam problem is solved by arranging the material pressing piece on the outer side of the pressing roller, smooth paper output is realized, the material pressing piece also carries out cover buckle protection on the pressing roller, and dust attached to the surface of the material pressing piece is reduced.

Description

Thermal printer

Technical Field

The invention relates to the technical field of printing equipment, in particular to a thermal printer.

Background

A satellite positioning device, such as a recorder, meeting the requirements is installed before the vehicle leaves the factory, the recorder stores the driving data of the vehicle, and a printer is usually configured to output the data of the vehicle-mounted terminal in order to facilitate the law enforcement officer to call the vehicle-mounted data on site.

The existing vehicle-mounted terminal generally adopts a thermal printer to output data, thermal paper is directly contacted with a printing head under the pressurization of a pressing roller, the thermal paper is used for construction vehicles with severe service environments such as muck trucks, the pressing roller is easy to be stained with ash to cause paper slip, the printing paper is easy to misplace due to large vibration amplitude, the paper jamming phenomenon is easy to occur in the printing paper output process, and the data cannot be normally extracted.

Disclosure of Invention

The invention provides a thermal printer, which is used for solving the defect that paper is easy to jam in the printing paper output process in the prior art, the problem of paper jamming is solved by arranging a pressing piece on the outer side of a pressing roller, smooth paper output is realized, the pressing piece also carries out cover buckle protection on the pressing roller, and dust attached to the surface of the pressing piece is reduced.

The present invention provides a thermal printer including:

the compression roller is used for driving printing paper to output;

pressing material spare, including separating fender portion and connecting separate the connecting portion at fender portion both ends, the connecting portion cover is established the compression roller is in the outside, separate fender portion with form the play paper passageway that is used for the transmission to beat printing paper between the compression roller exit end of play paper passageway, separate fender portion to be constructed with the orientation convex first bulge of compression roller is in order to reduce separate fender portion with interval between the compression roller.

According to the thermal printer provided by the invention, the shell limits the paper outlet, and the baffle part shields the surface of the pressing roller facing the paper outlet.

According to the thermal printer provided by the invention, the shell is provided with the limiting block, the limiting block is positioned below the paper outlet, the blocking part is further provided with a second protruding part protruding towards the direction away from the pressing roller, and the second protruding part abuts against the limiting block.

According to the thermal printer provided by the invention, the shell comprises a supporting surface positioned below the paper outlet, and the supporting surface is inclined downwards along the direction from the paper outlet to the direction far away from the paper outlet.

According to the thermal printer provided by the invention, under the condition that the shell is provided with the limiting block, the limiting block is arranged on the supporting surface.

According to the thermal printer provided by the invention, the limiting blocks are supported at two ends of the blocking part.

According to the thermal printer provided by the invention, the shell constructs the accommodating groove for accommodating printing paper and the support groove for installing the press roller, the two ends of the press roller are provided with the positioning rings, and the positioning rings are lapped in the support groove.

According to a thermal printer provided by the present invention, at the inlet end of the sheet discharge path, the barrier portion is further configured with a third projecting portion projecting in a direction away from the platen roller.

According to the thermal printer provided by the invention, the first protruding part is made of metal.

According to the thermal printer provided by the invention, the material pressing piece is of an integrally formed structure.

According to the thermal printer provided by the invention, the material pressing piece is arranged on the outer side of the press roller, and the blocking part of the material pressing piece covers and buckles the wall surface of the press roller to protect, so that dust adhered to the surface of the press roller is reduced; a paper outlet channel is limited between the blocking part and the press roller and guides and limits the printing paper; and, at the exit end of play paper passageway, separate the fender portion and construct the first bulge towards the compression roller bulge to reduce the interval between fender portion and the compression roller, make first bulge will beat printing paper and press on the compression roller surface, beat printing paper and be difficult for sliding, guarantee to beat printing paper and shift out smoothly from play paper passageway.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a material pressing assembly of a thermal printer according to the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of a mounting state of a pressing assembly and a housing of the thermal printer according to the present invention;

FIG. 4 is a schematic view of the overall structure of a thermal printer according to the present invention;

reference numerals:

1. a material pressing component; 11. pressing the material; 111. a barrier portion; 1111. a first projecting portion; 1112. a second projection; 1113. a third projecting portion; 112. a connecting portion; 12. a positioning ring; 13. a compression roller; 14. a paper outlet channel; 141. an outlet end; 142. an inlet end; 15. a transmission gear;

2. an upper cover; 3. a housing; 31. a support surface; 32. a limiting block; 33. accommodating grooves; 4. a side cover; 5. and connecting the wires.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, an embodiment of the present invention provides a thermal printer including: a press roller 13 and a material pressing piece 11, wherein the press roller 13 is used for driving printing paper to output; the pressing member 11 includes a barrier portion 111 and a connecting portion 112 connected to both ends of the barrier portion 111, the connecting portion 112 is sleeved on the outer side of the pressing roller 13, a paper output channel 14 for transmitting printing paper is formed between the barrier portion 111 and the pressing roller 13, and at an outlet end 141 of the paper output channel 14, the barrier portion 111 is configured with a first protrusion portion 1111 protruding toward the pressing roller 13 to reduce a distance between the barrier portion 111 and the pressing roller 13.

The pressing roller 13 is driven by a motor to rotate, and the pressing roller 13 rotates to drive the printing paper to be output from the accommodating groove 33 of the shell 3. The material pressing part 11 is rotatably connected with the compression roller 13, the compression roller 13 rotates, the material pressing part 11 covers and buckles the surface of the compression roller 13 towards the outer side of the shell 3 all the time, namely, the blocking part 111 can block the surface of the compression roller 13 towards the outer side of the shell 3 at the outer side of the compression roller 13, so that the dustproof effect and the blocking protection effect are achieved, the surface adhesion dust of the compression roller 13 is reduced, and the compression roller 13 can be prevented from being accidentally injured by external devices. The connecting parts 112 at the two ends of the material pressing piece 11 are nested on the surfaces of the shaft rods at the two sides of the compression roller 13, so that the material pressing piece 11 is simple in installation mode.

A paper output channel 14 is defined between the material pressing piece 11 and the pressing roller 13, and the paper output channel 14 guides and limits the printing paper so that the printing paper is output along the paper output channel 14. When the printing paper passes through the paper output channel 14 between the blocking part 111 and the pressing roller 13, the printing paper passes through the paper output channel 14 and comes out from the outlet end 141 of the paper output channel 14 at the front end of the blocking part 111, and in the process that the paper output channel 14 moves out from the outlet end 141, the distance between the blocking part 111 of the outlet end 141 and the pressing roller 13 is reduced, so that the printing paper is pressed by the first protruding part 1111 of the blocking part 111, and the printing paper is attached to the surface of the pressing roller 13, the printing paper is not easy to slide, the printing paper is guaranteed to move out from the paper output channel 14 smoothly, and the paper jam problem can be solved.

The thermal printer of this embodiment optimizes current printer, promptly at the outside of compression roller 13 set pressure material piece 11, presses material piece 11 to play and avoids the card paper and carry out the dual function of dustproof protection to compression roller 13, and at the in-process that beats printer paper and extrude simultaneously, pressure material piece 11 guides to beat the laminating of printing paper and is pressing the roller surface, makes out more stable of paper. When the thermal printer of this embodiment, use at the vehicle in-process of traveling, beat printing paper and also can laminate compression roller 13, avoid beating consumptive material such as printing paper and take place the offset in rocking, avoid beating printing paper card in the gap of 13 sides of compression roller, solve the card paper problem, also avoid appearing beating the condition that printing paper breaks away from compression roller 13.

In some embodiments, referring to fig. 4, the thermal printer further includes a housing 3, the housing 3 restricts the paper outlet, and the blocking portion 111 blocks a surface of the pressing roller 13 facing the paper outlet. The upper cover 2 is arranged on the upper portion of the shell 3, the shell 3 is matched with the upper cover 2 to limit the paper outlet, the blocking portion 111 is matched with printing paper at the position of the paper outlet through the blocking portion 111, the surface of the pressing roller 13 is covered and protected, the blocking portion 111 plays a role in protecting the pressing roller 13 and prevents dust, and dust attached to the surface of the pressing roller 13 is reduced.

In some embodiments, referring to fig. 3 and 4, the housing 3 is provided with a stopper 32, the stopper 32 is located below the paper outlet, the barrier portion 111 is further configured with a second protrusion 1112 protruding in a direction away from the pressing roller 13, and the second protrusion 1112 abuts against the stopper 32. At the paper exit, the stopper 32 supports the pressing member 11, so that the exit end 141 of the paper exit channel 14 smoothly and stably discharges paper. The blocking part 111 contacts the stopper 32 through the second protrusion 1112, so that the contact area between the blocking part 111 and the stopper 32 is increased, and the stable contact between the blocking part 111 and the stopper 32 can be ensured.

Wherein, stopper 32 sets up in the both sides of exit slot, and stopper 32 supports the bottom of separating fender portion 111 to make to be equipped with the clearance between the exit end 141 of play paper passageway 14 and the surface of casing 3, guarantee to go out paper smoothly, avoid because first bulge 1111 is too big to printing paper surface pressure, cause to beat the too big problem of frictional force on printing paper and casing 3 surface, avoid appearing out the unusual circumstances of paper.

In some embodiments, referring to fig. 3 and 4, the housing 3 includes a supporting surface 31 located below the paper outlet, the supporting surface 31 is inclined downwards along the direction from the paper outlet to the paper outlet, and the supporting surface 31 can guide the dust downwards to avoid dust accumulation on the surface of the supporting surface 31.

The supporting surface 31 may be a plane, a curved surface or a bent surface, and the shape of the supporting surface 31 may be selected as required.

In some embodiments, referring to fig. 4, the housing 3 is provided with a stopper 32, the stopper 32 is located below the paper outlet, and the supporting surface 31 is provided with the stopper 32, so that the stopper 32 is convenient to mount, and the structure is simple.

Wherein, stopper 32 can be the surperficial integrated into one piece's of holding surface 31 lug, and stopper 32 still can be for being fixed in holding surface 31 through modes such as bonding, joint, magnetism, threaded connection, and stopper 32's mounting means is various, specifically selects as required.

In some embodiments, referring to fig. 4, the limiting blocks 32 are supported at two ends of the blocking portion 111, so that the blocking portion 111 is supported well, and the structure is simple, and paper discharge cannot be disturbed.

In some embodiments, referring to fig. 3 and 4, the housing 3 is configured with a receiving groove 33 for receiving printing paper and a supporting groove for mounting the platen roller 13, and the platen roller 13 is provided with positioning rings 12 at both ends thereof, and the positioning rings 12 are overlapped in the supporting groove. The installation mode of compression roller 13 on casing 3 is simple, makes things convenient for the dismouting, can also guarantee compression roller 13 and rotate steadily.

Wherein, the holding ring 12 is a circular ring, supports the semicircular groove in groove, and the holding ring 12 can be placed on supporting the groove, presses the material subassembly 1 and makes things convenient for the dismouting.

In some embodiments, referring to fig. 1 to 3, at the inlet end 142 of the paper output channel 14, the barrier 111 is further configured with a third protrusion 1113, the third protrusion 1113 protrudes in a direction away from the pressing roller 13, and the third protrusion 1113 thickens and reinforces an end of the barrier 111, so as to prevent the pressing member 11 from bouncing under the influence of vibration force and improve the stability of the pressing member 11.

In some embodiments, the first protrusion 1111 is made of metal, so as to increase the gravity of the first protrusion 1111, that is, the gravity of the blocking portion 111 corresponding to the outlet end 141 of the paper output channel 14.

The compression roller 13 rotates the in-process, presses the position that the connecting portion 112 of material piece 11 and the material of pressing are connected to receive the effect of frictional force and rotate, and the gravity of the first bulge 1111 of metal material is great, can reduce the beating of material piece 11 in the use for beat the stable laminating of printing paper on the surface of compression roller 13, avoid beating the printer paper dislocation of appearing, the condition that reduces the card paper takes place.

In some embodiments, the pressing member 11 is an integrally formed structure, which facilitates processing and assembly and disassembly.

The pressing piece 11 can be an integrated metal piece, so that the processing is convenient, the gravity can be increased, and the pressing piece 11 is prevented from jumping due to bumping.

Referring to fig. 1 to 4, the pressing assembly 1 includes a pressing roller 13, a pressing member 11 sleeved on the pressing roller 13, a transmission gear 15 located at one end of the pressing roller 13, and positioning rings 12 located at two ends of the pressing roller 13, wherein the positioning ring 12 located at the side of the transmission gear 15 is located at the inner side of the transmission gear 15, the connecting portion 112 of the pressing member 11 is installed at two ends of the pressing roller 13, the pressing member 11 can rotate relative to the pressing roller 13, the transmission gear 15 is arranged at one end of the pressing roller 13, and the transmission gear 15 is suitable for being in meshing transmission with a driving gear connected to a motor. The pressing assembly 1 shown in fig. 1, the positioning ring 12 is mounted in the supporting groove of the housing 3, as shown in fig. 3, the supporting groove is a semicircular groove matched with the positioning ring 12, the positioning ring 12 can rotate relative to the supporting groove, when in use, printing paper is placed in the accommodating groove 33 of the housing 3, the end of the printing paper passes through the paper outlet channel 14 between the pressing piece 11 and the pressing roller 13, the printing paper is dragged for a certain distance, the end of the printing paper extends out of the outlet end 141 of the paper outlet channel 14, and then the side cover 4 is buckled.

The side cover 4 is buckled, the transmission gear 15 at the end part of the pressing roller 13 is meshed with the driving gear inside the upper cover 2, and during printing, the motor inside the upper cover 2 drives the pressing roller 13 to rotate, so that printing paper is sent out at a constant speed, and the thermosensitive part inside the upper cover 2 heats the paper and further enables the surface of the printing paper to leave data.

Before use, the thermal printer is connected to the recorder via the connecting line 5 to print the information stored in the recorder.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A thermal printer, comprising:

the compression roller is used for driving printing paper to output;

the pressing piece comprises a blocking part and connecting parts connected to two ends of the blocking part, the connecting parts are sleeved on the outer sides of the pressing rollers, paper outlet channels for transmitting printing paper are formed between the blocking part and the pressing rollers, and a first protruding part protruding towards the pressing rollers is formed at the outlet ends of the paper outlet channels so as to reduce the distance between the blocking part and the pressing rollers;

the casing, the casing is provided with the exit slot, it shelters from to separate the fender portion the compression roller orientation the surface of exit slot, the casing is provided with the stopper, the stopper is located the below of exit slot, it still is constructed to separating the fender portion to deviating from the direction protrusion second bulge of compression roller, second bulge butt the stopper.

2. The thermal printer according to claim 1, wherein the housing includes a support surface located below the paper discharge port, the support surface being inclined downward in a direction away from the paper discharge port.

3. The thermal printer according to claim 2, wherein in the case where the case is provided with a stopper, the support surface is provided with the stopper.

4. The thermal printer according to claim 3, wherein the stoppers are supported at both ends of the barrier.

5. The thermal printer according to claim 1, wherein the casing defines a receiving groove for receiving the printing paper and a supporting groove for receiving the platen roller, and positioning rings are provided at both ends of the platen roller and are overlapped with the supporting groove.

6. The thermal printer according to any one of claims 1 to 5, wherein at the inlet end of the sheet discharge path, the barrier is further configured with a third projecting portion that projects in a direction away from the platen roller.

7. The thermal printer according to any one of claims 1 to 5, wherein the first projecting portion is of a metal material.

8. A thermal printer according to any one of claims 1 to 5, wherein the die member is of unitary construction.