CN211684125U - Stylus printer - Google Patents

Abstract

The utility model discloses a stylus printer, which comprises a base, a shell, a left side plate, a right side plate, a printing mechanism, a coloring component, a paper feeding mechanism and a driving motor; the printing mechanism comprises a printing shaft and a printing assembly, a left eccentric wheel and a right eccentric wheel are respectively mounted at two ends of the printing shaft, a poking wheel is mounted on a right side plate, a poking rod is arranged on the poking wheel, the poking rod drives the right eccentric wheel through a first transmission piece, a first sliding groove is formed in the first transmission piece, and the first transmission piece drives the right eccentric wheel through a first rotating arm; the coloring assembly comprises a coloring frame and a color ribbon, a third upper bayonet and a third lower bayonet are formed on the left side plate and the right side plate, a third upper mounting part and a third lower mounting part are formed at two ends of the coloring frame, the third upper mounting part is mounted at the third upper bayonet, and the third lower mounting part is mounted at the third lower bayonet; the paper feeding mechanism comprises two paper feeding shafts, and the printing assembly is positioned between the two paper feeding shafts; the driving motor drives the two paper feeding shafts to rotate forwards and reversely through gear engagement.

Description

Stylus printer

Technical Field

The utility model relates to a print technical field, in particular to pin printer.

Background

A stylus printer prints a formed font by striking a carbon paper with a stylus mounted on a print head. In the prior art, the stylus printer has the following defects: due to the structural limitation of the stylus printer, the position of the printing shaft is usually not adjustable after being installed, so that the height of the stylus cannot be adjusted to adjust the striking force in the using process; the stylus printer is unidirectional in paper feeding, so that the application occasion of the stylus printer is limited, for example, when the stylus printer needs to print on the same carbon paper for multiple times, the paper from the rear side needs to be manually placed back to the front side for paper re-feeding, and the efficiency is influenced; the color ribbon in the stylus printer is fastened and installed by screws and is inconvenient to disassemble, so that black and white printing is inconvenient; because the needle is knocked for high frequency time dynamics, the bottom plate of present common impact printer is hard material, consequently causes the damage of needle very easily.

SUMMERY OF THE UTILITY MODEL

For at least one among the above-mentioned technical problem of solution, the hitting dynamics of adjusting the needle through the height of adjustment printing shaft improves work efficiency, and convenient front and back paper feed is convenient for install and remove the typewriter ribbon, and both can the color be beaten, but black and white prints again, the utility model provides a needle printer, the technical scheme who adopts as follows:

the utility model provides an impact printer includes base, casing, left side board, right side board, printing mechanism, coloring subassembly, paper feed mechanism and driving motor, the base is installed and is printed the bottom plate, the casing is installed on the base, the left side board is installed in the base, the left side board is located in the casing, the right side board is installed in the base, the right side board is located in the casing, the printing bottom plate is located the lower part of the region between the left side board and the right side board; the printing mechanism is positioned above the printing bottom plate and comprises a printing shaft and a printing assembly, the printing assembly is installed on the printing shaft, two ends of the printing shaft are respectively and rotatably installed on the left side plate and the right side plate, a left eccentric wheel and a right eccentric wheel are respectively installed at two ends of the printing shaft, a poking wheel for driving the right eccentric wheel to rotate is installed on the right side plate, the poking wheel is installed on the right side plate through a first rotating shaft, a poking rod for driving the right eccentric wheel to rotate is arranged on the end face of the poking wheel, the poking rod drives the right eccentric wheel to rotate through a first transmission part, a first sliding groove for enabling the poking rod to move along is formed in the first transmission part, the first transmission part drives the right eccentric wheel to rotate through a first rotating arm, and the right eccentric wheel is fixedly installed at one end of the first rotating arm, the first transmission piece is installed at the other end of the first rotating arm, a right fixing structure is formed at one end of the right eccentric wheel, and the right fixing structure is fixed with the first rotating arm through a screw; the utility model discloses a color ribbon, including left side board, right side board, color assembly, color, a third upper clamping groove for clamping the third upper limiting part is formed in the side wall of the third upper clamping opening, a third lower clamping groove for clamping the third lower limiting part is formed in the side wall of the third lower clamping opening, a third belt transmission assembly for driving the printing assembly to move is arranged on the third mounting frame, the third belt transmission assembly comprises a printing driving wheel, a printing driven wheel and a printing transmission belt for driving the printing assembly to move, and the printing driving wheel is mounted at the output end of the third motor; the paper feeding mechanism comprises two paper feeding shafts, the two paper feeding shafts are positioned above the printing bottom plate, two ends of each paper feeding shaft are respectively installed on the left side plate and the right side plate through shaft sleeves, the printing assembly is positioned between the two paper feeding shafts, the paper feeding shafts are provided with a plurality of driving rollers, and the printing bottom plate is provided with a plurality of driven rollers corresponding to the driving rollers; the driving motor is installed the right side board, output gear is installed to driving motor's output, the installation of paper feed axle install paper feed input gear is installed to the one end of right side board, driving motor drives two through the gear engagement paper feed axle corotation and reversal.

Furthermore, the right fixing structure is formed with a right arc waist hole for installing a screw, a right positioning convex part is formed on the side surface of the right fixing structure, a plurality of right positioning concave parts are formed on the side surface of the first rotating arm, and the right positioning concave parts are distributed on a circumferential track.

Further, the left side board is arranged with and is used for the installation the left fixed knot of left eccentric wheel constructs, left side fixed knot constructs through the mounting screw and is in the left side board, left side fixed knot constructs the shaping and has a left arc waist hole that is used for the mounting screw, the side shaping of left side fixed knot structure one end has left location bellying, the shaping of left side board has a plurality of left location concave part, each left side location concave part distributes on a circumference orbit.

Further, the casing shaping has the confession the handle hole that the thumb wheel exposes, two have been arranged to the side of thumb wheel and stir spacing portion, two stir spacing portion and have respectively and be used for supporting shells inner wall stir spacing face, two stir circumference between the spacing face does the rotation stroke of thumb wheel.

Further, a rear paper conveying assembly is installed on the rear side of the printing bottom plate and comprises a rear paper conveying transmission shaft, a rear paper conveying synchronous shaft and two rear conveying assemblies, each rear conveying assembly comprises a second driving wheel, a second driven wheel and a rear paper conveying belt, the two second driving wheels are installed at two ends of the rear paper conveying transmission shaft respectively, the two second driven wheels are installed at two ends of the rear paper conveying synchronous shaft respectively, two ends of the rear paper conveying transmission shaft are installed on the left side plate and the right side plate respectively, two ends of the rear paper conveying synchronous shaft are installed on the left side plate and the right side plate respectively, a rear input gear is installed at one end of the right side plate through the rear paper conveying transmission shaft, and the driving motor drives the rear paper conveying transmission shaft to rotate forwards and reversely through gear engagement.

Further, the back paper conveying assembly comprises a back mounting frame, the back mounting frame is mounted at the end parts of the back paper conveying transmission shaft and the back paper conveying synchronous shaft, a paper pressing plate is arranged on the back mounting frame, and the paper pressing plate is located above the corresponding back paper conveying conveyor belt.

Furthermore, the paper feeding shaft is arranged at the end part of the left side plate and is provided with an elastic pressing sheet, one end of the elastic pressing sheet is arranged on the left side plate, and the side surface of the other end of the elastic pressing sheet is propped against the end surface of the paper feeding shaft.

Further, an arc-shaped surface is formed on the side surface of the third upper limiting part, and an arc-shaped surface is formed on the side surface of the third lower limiting part.

Further, the third mounting bracket is installed and is used for driving the typewriter ribbon removal the transmission shaft of coloring, the output of third motor passes through the drive of the tooth meshing the transmission shaft of coloring, the side shaping of the frame of coloring has the confession the tip male third through-hole of the transmission shaft of coloring, the one end of the transmission shaft of coloring is installed and is colored input gear, the output of third motor passes through the drive of the tooth meshing the input gear of coloring rotates, the other end shaping of the transmission shaft of coloring has a plurality of teeth of a cogwheel.

Further, print the printing backing plate that the bottom plate installed the flexible glue material, print the backing plate and arrange through the printing plate print the bottom plate, it fixes to print the backing plate the upside of printing plate, the printing plate is arranged through the gum print the bottom plate, it has the fourth mounting groove that is used for arranging to print the backing plate the bottom plate shaping.

Has the advantages that: the printing shaft is rotated through the right eccentric wheel and the left eccentric wheel to achieve the purpose of adjusting the height of the printing shaft, so that the height of a needle is adjusted, and the force of the needle striking the carbon paper is adjusted; the front side and the rear side of the stylus printer are respectively provided with a paper feeding shaft, and the two paper feeding shafts are driven by a driving motor to rotate forwards and backwards, so that paper feeding on the front side or the rear side can be realized; the bayonet socket and the bayonet socket under the third are gone into respectively to the tip of coloring the frame through installation department under installation department and the third on the third, need not to adopt the screw-fastening, conveniently installs and removes, and the subassembly of coloring is installed to the color when beating, and the subassembly of coloring is lifted off when black and white is printed. The utility model discloses it is rational in infrastructure, but wide application in prints technical field.

Drawings

FIG. 1 is a block diagram of a stylus printer;

FIG. 2 is a block diagram of the left side plate, right side plate, print shaft and print assembly;

FIG. 3 is a schematic view of the assembled dial wheel, first transmission member, first rotation arm and right eccentric wheel;

FIG. 4 is an exploded view of the structure of FIG. 3;

FIG. 5 is a block diagram of a left fixation structure;

FIG. 6 is a partial view of area A of FIG. 1;

FIG. 7 is a view of the stylus printer with the housing removed;

FIG. 8 is a block diagram of the assembly of the left side plate, the right side plate, the two feed shafts, the printing base plate, and the rear feed assembly;

FIG. 9 is a block diagram of the outer side of the right side panel of the structure of FIG. 8;

FIG. 10 is a partial view of the area B in FIG. 7;

FIG. 11 is a block diagram of a rear feed assembly;

FIG. 12 is a view of the stylus printer with the housing removed;

fig. 13 is a structural view of a coloring assembly;

FIG. 14 is a partial view of area C of FIG. 13;

FIG. 15 is a structural view of the left side plate;

fig. 16 is a view showing the assembled structure of the third mounting frame, the third motor, the third belt driving unit, and the coloring driving shaft;

FIG. 17 is a front view of the structure of FIG. 16;

FIG. 18 is a view of the stylus printer with the housing removed;

FIG. 19 is a block diagram of a printing plate;

FIG. 20 is a block diagram of a print pad;

FIG. 21 is a structural view of a printing plate;

FIG. 22 is a block diagram of a print pad;

FIG. 23 is a partial view of region D of FIG. 22;

fig. 24 is a partial view of the area E in fig. 21.

Detailed Description

The present invention will be further described with reference to fig. 1 to 24.

The utility model relates to an impact printer, the on-line screen storage device comprises a base, casing 111, left side board 112, right side board 113, printing mechanism, color the subassembly, paper feed mechanism and driving motor, pedestal mounting has printing bottom plate 212, casing 111 installs on the base, left side board 112 is installed at the base, left side board 112 is located casing 111, right side board 113 is installed at the base, right side board 113 is located casing 111, printing bottom plate 212 is located the lower part of region between left side board 112 and the right side board 113, printing mechanism is located the top of printing bottom plate 212, printing mechanism is including printing axle 114 and printing subassembly 115, printing subassembly 115 is installed at printing axle 114.

The paper feeding mechanism comprises two paper feeding shafts 215, two ends of the paper feeding shafts 215 are respectively arranged on the left side plate 112 and the right side plate 113 through shaft sleeves, and the printing component 115 of the stylus printer is positioned between the two paper feeding shafts 215. The two paper feeding shafts 215 are located above the printing base plate 212, the two paper feeding shafts 215 are respectively close to the front side and the rear side of the printing base plate 212, a paper feeding channel is formed between the paper feeding shafts 215 and the printing base plate 212, a plurality of driving rollers are mounted on the paper feeding shafts 215, and a plurality of driven rollers 216 corresponding to the driving rollers are mounted on the printing base plate 212.

The driving motor is arranged on the right side plate 113, the output end of the driving motor is provided with an output gear 217, the driving motor is arranged on the inner side of the right side plate 113, and the output gear 217 is positioned on the outer side of the right side plate 113. The two paper feeding shafts 215 are mounted on one end of the right side plate 113, and a paper feeding input gear 218 is mounted on one end of the right side plate, and the driving motor drives the two paper feeding shafts 215 to rotate forward and backward through gear engagement, so that the paper is fed from the front side and the back side of the stylus printer.

The right side plate 113 is provided with a paper feeding composite gear which is provided with a large-diameter gear and a small-diameter gear, the paper feeding composite gear drives a paper feeding output gear 217 to rotate through a paper feeding synchronous gear respectively, and the output gear 217 of a driving motor and the paper feeding input gear 218 are in meshing transmission through three-stage gear teeth, so that the transmission precision and stability can be improved.

The paper feeding shaft 215 is formed with a transmission surface on the side surface of the end portion for mounting the paper feeding input gear 218, and the end portion of the paper feeding shaft 215 is formed into a D-shaped structure, so that compared with the traditional square shaft end portion structure, the processing procedures are reduced, and the transmission performance is not influenced.

The paper feeding shaft 215 is arranged at the end part of the left side plate 112 and is provided with an elastic pressing piece 226, one end of the elastic pressing piece 226 is arranged at the left side plate 112, and the side surface of the other end of the elastic pressing piece 226 is abutted against the end surface of the paper feeding shaft 215. The elastic pressing piece 226 is used for providing an axial elastic margin for the end face of the paper feeding shaft 215, eliminating machining errors, improving the mounting precision and stability, and maintaining the consistency of the mounting structure.

The rear paper feeding assembly is mounted on the rear side of the printing bottom plate 212 and comprises a rear paper feeding transmission shaft 219, a rear paper feeding synchronizing shaft 220 and two rear conveying assemblies, each rear conveying assembly comprises a second driving wheel, a second driven wheel and a rear paper feeding conveying belt 221, the two second driving wheels are mounted at two ends of the rear paper feeding transmission shaft 219 respectively, the two second driven wheels are mounted at two ends of the rear paper feeding synchronizing shaft 220 respectively, two ends of the rear paper feeding transmission shaft 219 are mounted on the left side plate 112 and the right side plate 113 respectively, two ends of the rear paper feeding synchronizing shaft 220 are mounted on the left side plate 112 and the right side plate 113 respectively, the rear paper feeding transmission shaft 219 is mounted at one end of the right side plate 113 and is provided with a rear input gear 222, and the driving motor drives the rear paper feeding transmission shaft 219 to rotate forwards and backwards through gear engagement, so that the needle printer feeds paper from the front.

One of the adjacent paper feeding synchronous gears drives the rear input gear 222 to rotate through the rear paper feeding synchronous gear, and the output gear 217 of the driving motor and the rear paper feeding synchronous gear are in meshing transmission through multi-stage gear teeth, so that the transmission precision and the transmission stability can be improved.

The side surface of the end part of the rear paper conveying transmission shaft 219 for mounting the rear input gear 222 is formed with a transmission surface, and the end part of the rear paper conveying transmission shaft 219 is formed into a D-shaped structure, so that compared with the end part structure of a traditional square shaft, the processing procedures are reduced, and the transmission performance is not influenced.

The rear paper feeding assembly includes a rear mounting bracket 223, the rear mounting bracket 223 is mounted at the end of the rear paper feeding transmission shaft 219 and the rear paper feeding synchronizing shaft 220, the rear mounting bracket 223 is disposed with a paper pressing plate 224, the paper pressing plate 224 is located above the corresponding rear paper feeding conveyor belt 221, and the paper is fed between the paper pressing plate 224 and the rear paper feeding conveyor belt 221. The paper pressing plate 224 is installed outside the rear mounting frame 223 through a hinge portion, and the hinge portion of the paper pressing plate 224 of the two rear paper feeding assemblies can define the width of the paper feeding path while installing the paper pressing plate 224.

The rear paper feeding belt 221 is formed with a plurality of anti-slip protrusions 225 to prevent slipping between the rear paper feeding belt 221 and the paper.

The two ends of the printing shaft 114 are respectively and rotatably arranged on the left side plate 112 and the right side plate 113, and the two ends of the printing shaft 114 are respectively provided with a left eccentric wheel and a right eccentric wheel 116. Rotation of left and right eccentric wheels 116 finely adjusts the height of print shaft 114 and, thus, the height of print assembly 115.

The left eccentric wheel and the right eccentric wheel 116 are both cylindrical structures, first through holes for mounting the end parts of the printing shafts 114 are formed in the left eccentric wheel and the right eccentric wheel 116 respectively, the axis of each first through hole deviates from the axis of the cylindrical structure where the first through hole is located, a limiting surface is formed on the side wall of each first through hole, and the limiting surface can be designed to be a plane.

The right side plate 113 is provided with a poking wheel 117 for driving the right eccentric wheel 116 to rotate, and the poking wheel 117 is arranged on the right side plate 113 through a first rotating shaft. An operation hole for exposing the poking wheel 117 is formed in the shell 111, and part of the side surface of the poking wheel 117 is exposed out of the operation hole, so that poking is convenient.

Two toggle limiting parts 124 are arranged on the side face of the toggle wheel 117, the two toggle limiting parts 124 are respectively provided with toggle limiting surfaces used for abutting against the inner wall of the shell 111, and the circumference between the two toggle limiting surfaces is the rotation stroke of the toggle wheel 117. The dial wheel 117 is designed with dial scales distributed along the rotation stroke for determining the height of the print shaft 114.

The side surface of the poking wheel 117 is formed with a plurality of anti-skid structures, the anti-skid structures are distributed along the rotation stroke, and the anti-skid structures can be designed into tooth-shaped structures or convex point structures, so that the poking is convenient.

The end face of the toggle wheel 117 is provided with a toggle lever 118 for driving the right eccentric wheel 116 to rotate, the toggle lever 118 drives the right eccentric wheel 116 to rotate through a first transmission piece 119, the first transmission piece 119 is formed with a first sliding groove for the toggle lever 118 to move along, and the toggle lever 118 and the first sliding groove form a connecting rod assembly for driving the right eccentric wheel 116 to rotate.

The first transmission member 119 drives the right eccentric wheel 116 to rotate through the first rotating arm 120, the right eccentric wheel 116 is fixedly mounted at one end of the first rotating arm 120, the first transmission member 119 is mounted at the other end of the first rotating arm 120, a right fixing structure 121 is formed at one end of the right eccentric wheel 116, and the right fixing structure 121 is fixed with the first rotating arm 120 through a screw.

The right fixing structure 121 is formed with a right arc-shaped waist hole for mounting a screw, the side surface of the right fixing structure 121 is formed with a right positioning protrusion, the side surface of the first rotating arm 120 is formed with a plurality of right positioning recesses 122, the right positioning recesses 122 may be designed as one of a through hole, a blind hole and a groove, and each right positioning recess 122 is distributed on a circumferential track. The height of the printing shaft 114 during installation can be adjusted by the right positioning protrusion correspondingly buckling in different right positioning concave parts 122.

The left side plate 112 is arranged with a left fixing structure 123 for mounting a left eccentric wheel, which is fixedly mounted at the left fixing structure 123. The left fixing structure 123 is installed on the left side plate 112 through a screw, the left fixing structure 123 is formed with a left arc-shaped waist hole for installing the screw, a left positioning protruding portion is formed on the side face of one end of the left fixing structure 123, a plurality of left positioning concave portions are formed on the left side plate 112, the left positioning concave portions can be designed into one of a through hole, a blind hole and a groove, and each left positioning concave portion is distributed on a circumference track. The end where the left positioning protrusion is located is made of an elastic material, after the dial wheel 117 drives the printing shaft 114 to rotate and adjust the height, the left eccentric wheel and the left fixing structure 123 rotate along with the rotation, and the left positioning protrusion is clamped in the corresponding left positioning concave part to avoid the deviation caused by the rotation of the printing shaft 114.

The subassembly of coloring is installed between left side board 112 and right side board 113, and the subassembly of coloring is for taking drive mechanism, and the subassembly of coloring includes coloring frame 314 and installs the typewriter ribbon 315 at coloring frame 314, installs third mounting bracket 316 between left side board 112 and the right side board 113, and third mounting bracket 316 arranges third motor 317 that is used for driving typewriter ribbon 315 to remove, and third motor 317 drives typewriter ribbon 315 reciprocating motion through the tooth of a cogwheel meshing.

The transmission shaft 323 of coloring that is used for driving typewriter ribbon 315 to remove is installed to third mounting bracket 316, and the output of third motor 317 is through the drive of the tooth meshing transmission shaft 323 of coloring, and the input gear of coloring is installed to the one end of the transmission shaft 323 of coloring, and the output of third motor 317 is through the drive of the tooth meshing input gear rotation of coloring, and the other end shaping of the transmission shaft 323 of coloring has a plurality of teeth of a cogwheel, and the side shaping of the frame 314 of coloring has the third through-hole that can supply the tip male of the transmission shaft 323.

The third mounting frame 316 is provided with a third belt transmission assembly for driving the printing assembly 115 to move, the printing assembly 115 reciprocates on the upper side of the ribbon 315, the third belt transmission assembly comprises a printing driving wheel, a printing driven wheel and a printing transmission belt 324 for driving the printing assembly 115 to move, and the printing driving wheel is mounted at the output end of the third motor 317. The third motor 317 directly drives the printing transmission belt 324 through the printing driving wheel without gear transmission, so that no gap exists and the transmission precision is high.

The left side plate 112 and the right side plate 113 are respectively formed with a third upper bayonet 318 and a third lower bayonet 319 for mounting the upper coloring frame 314, both ends of the upper coloring frame 314 are respectively formed with a third upper mounting part 320 and a third lower mounting part 321, the third upper mounting part 320 is mounted at the corresponding third upper bayonet 318, and the third lower mounting part 321 is mounted at the third lower bayonet 319. When the coloring rack is installed, the third upper installation part 320 and the third lower installation part 321 at the two ends of the coloring rack 314 are clamped in corresponding to the third upper bayonet 318 and the third lower bayonet 319, and the coloring transmission shaft 323 is inserted into the third through hole, so that the assembly and disassembly process is simple and easy to operate.

A third upper limiting portion is formed on the upper side or the lower side of the third upper mounting portion 320, a third lower limiting portion is formed on the upper side or the lower side of the third lower mounting portion 321, the side surfaces of the third upper limiting portion and the third lower limiting portion are opposite or reverse, a third upper clamping groove for clamping the third upper limiting portion is formed on the side wall of the third upper bayonet 318, and a third lower clamping groove for clamping the third lower limiting portion is formed on the side wall of the third lower bayonet 319. For example: a third upper stopper formed at a lower side of the third upper mounting part 320, and a third lower stopper formed at an upper side of the third lower mounting part 321; alternatively, the third upper stopper is formed on the upper side of the third upper mounting part 320, and the third lower stopper is formed on the lower side of the third lower mounting part 321.

For convenient assembly and disassembly, the side surface of the third upper limiting part is formed into an arc-shaped surface, the side surface of the third lower limiting part is formed into an arc-shaped surface, the third upper limiting part is easy to be clamped into and out of the third upper clamping groove, and the third lower limiting part is easy to be clamped into and out of the third lower clamping groove. Further for conveniently installing and removing, the side wall of the third upper clamping groove is obliquely arranged, and the side wall of the third lower clamping groove is obliquely arranged.

The two ends of the upper color frame 314 are respectively provided with a third auxiliary mounting part 322, the third auxiliary mounting part 322 is formed with a third auxiliary surface for abutting against the side wall of the third upper bayonet 318, the side wall of the third upper bayonet 318 corresponding to the third auxiliary mounting part 322 is opposite to the side wall of the third upper bayonet 318 corresponding to the third upper positioning part, and the upper color frame 314 can be mounted on the left side plate 112 and the right side plate 113 without swinging through the third auxiliary mounting part 322.

The printing base plate 212 is provided with a printing backing plate 416 made of soft rubber, and the soft rubber can be soft silica gel. The print pins in the print assembly 115 land on the print pad 416 each time they print, thereby preventing the print pins from being rigidly impacted and damaging.

The print pad 416 is disposed on the print base 212 by a print plate 417, the print pad 416 is fixed on the upper side of the print plate 417, and the print plate 417 may be disposed on the print base 212 by a back adhesive. The printing plate 417 is made of hard material, the printing plate 417 provides support for the printing pins, and in order to avoid poor printing effect, the thickness of the printing pad 416 is not too large, so that the printing effect is ensured, but the printing pins are not damaged.

The printing base plate 212 is formed with a fourth mounting groove 421 for disposing the printing pad 416, and the printing pad 416 is placed in the fourth mounting groove 421, so that the printing pad 416 does not exceed the plane of the printing base plate 212 to ensure smooth paper feeding.

Two fourth side edges 418 are formed on the lower side of the printing backing plate 416, the two fourth side edges 418 are arranged in parallel relatively, a fourth groove body used for being installed with the printing plate 417 is formed between the two fourth side edges 418, the upper side of the printing plate 417 is clamped in the fourth groove body, namely the printing backing plate 416 covers the printing plate 417, and the printing pin is prevented from mistakenly colliding with the printing plate 417.

The fourth side 418 is formed with at least one fourth protrusion 419, and the printing plate 417 is formed with a fourth recess 420 corresponding to each fourth protrusion 419. For example: a fourth protrusion 419 is formed on the inner side of each of both ends of the fourth side 418, a fourth recess 420 is formed on each of both sides of the end of the printing plate 417, and the fourth recess 420 is formed with an open groove. The inner side of the fourth side edge 418 is the opposite side of the two fourth side edges 418.

The fourth mounting groove 421 is located between the two paper feeding shafts 215, and the printing pad 416 is located between the two paper feeding shafts 215, thereby facilitating printing regardless of whether paper is fed in front side or back side.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. Stylus printer, its characterized in that: comprises that

A base mounting a printing plate (212);

a housing (111), the housing (111) being mounted on the base;

a left side plate (112), the left side plate (112) is mounted on the base, and the left side plate (112) is positioned in the shell (111);

a right side plate (113), wherein the right side plate (113) is installed on the base, the right side plate (113) is positioned in the shell (111), and the printing bottom plate (212) is positioned at the lower part of the area between the left side plate (112) and the right side plate (113);

the printing mechanism is located above the printing bottom plate (212), the printing mechanism comprises a printing shaft (114) and a printing assembly (115), the printing assembly (115) is installed on the printing shaft (114), two ends of the printing shaft (114) are respectively rotatably installed on the left side plate (112) and the right side plate (113), two ends of the printing shaft (114) are respectively provided with a left eccentric wheel and a right eccentric wheel (116), the right side plate (113) is provided with a poking wheel (117) used for driving the right eccentric wheel (116) to rotate, the poking wheel (117) is installed on the right side plate (113) through a first rotating shaft, a poking rod (118) used for driving the right eccentric wheel (116) to rotate is arranged on the end face of the poking wheel (117), and the poking rod (118) drives the right eccentric wheel (116) to rotate through a first transmission piece (119), the first transmission piece (119) is formed with a first sliding groove for the shifting lever (118) to move along, the first transmission piece (119) drives the right eccentric wheel (116) to rotate through a first rotating arm (120), the right eccentric wheel (116) is fixedly installed at one end of the first rotating arm (120), the first transmission piece (119) is installed at the other end of the first rotating arm (120), a right fixing structure (121) is formed at one end of the right eccentric wheel (116), and the right fixing structure (121) is fixed with the first rotating arm (120) through a screw;

coloring assembly, coloring assembly installs left side board (112) with between right side board (113), coloring assembly includes coloring frame (314) and installs coloring frame's (314) typewriter ribbon (315), left side board (112) with install third mounting bracket (316) between right side board (113), third mounting bracket (316) are arranged and are used for driving third motor (317) that typewriter ribbon (315) removed, left side board (112) with right side board (113) all shaping has and is used for installing bayonet socket (318) and bayonet socket (319) under the third on coloring frame's (314) the third, coloring frame's (314) both ends all shaping have installation department (320) and installation department (321) under third, installation department (320) are installed in bayonet socket (318) on the corresponding third on the third, installation department (321) are installed under the third and are corresponding bayonet socket (319), a third upper limiting part is formed on the upper side or the lower side of the third upper mounting part (320), a third lower limiting part is formed on the upper side or the lower side of the third lower mounting part (321), the side surfaces of the third upper limiting part and the third lower limiting part are opposite or reverse, a third upper clamping groove for clamping the third upper limiting part is formed on the side wall of the third upper bayonet (318), a third lower clamping groove for clamping the third lower limiting part is formed on the side wall of the third lower bayonet (319), a third belt transmission component for driving the printing component (115) to move is arranged on the third mounting frame (316), the third belt transmission component comprises a printing driving wheel, a printing driven wheel and a printing transmission belt for driving the printing component (115) to move, and the printing driving wheel is mounted at the output end of the third motor (317);

the paper feeding mechanism comprises two paper feeding shafts (215), the two paper feeding shafts (215) are positioned above the printing bottom plate (212), two ends of each paper feeding shaft (215) are respectively installed on the left side plate (112) and the right side plate (113) through shaft sleeves, the printing assembly (115) is positioned between the two paper feeding shafts (215), the paper feeding shafts (215) are provided with a plurality of driving rollers, and the printing bottom plate (212) is provided with a plurality of driven rollers (216) corresponding to the driving rollers;

the paper feeding mechanism comprises a driving motor, wherein the driving motor is installed on the right side plate (113), an output gear (217) is installed at the output end of the driving motor, a paper feeding input gear (218) is installed at one end of the right side plate (113) of the paper feeding shaft (215), and the driving motor drives the two paper feeding shafts (215) to rotate forwards and reversely through gear engagement.

2. The stylus printer according to claim 1, wherein: the right fixing structure (121) is formed with a right arc-shaped waist hole for mounting a screw, a right positioning convex part is formed on the side surface of the right fixing structure (121), a plurality of right positioning concave parts (122) are formed on the side surface of the first rotating arm (120), and the right positioning concave parts (122) are distributed on a circumferential track.

3. The stylus printer according to claim 1, wherein: the left side board (112) is arranged and is used for installing left side fixed knot structure (123) of left side eccentric wheel, left side fixed knot constructs (123) and passes through the mounting screw and be in left side board (112), left side fixed knot constructs (123) shaping and has the left arc waist hole that is used for the mounting screw, the side shaping of left side fixed knot constructs (123) one end has left location bellying, left side board (112) shaping has a plurality of left location concave part, each left side location concave part distributes on a circumference orbit.

4. The stylus printer according to claim 1, wherein: casing (111) shaping has the confession the handle hole that thumb wheel (117) expose, the side of thumb wheel (117) has been arranged two and has been stirred spacing portion (124), two stir spacing portion (124) and have respectively and be used for supporting casing (111) inner wall stir spacing face, two stir circumference between the spacing face does the rotation stroke of thumb wheel (117).

5. The stylus printer according to claim 1, wherein: the rear paper conveying component is installed on the rear side of the printing bottom plate (212) and comprises a rear paper conveying transmission shaft (219), a rear paper conveying synchronous shaft (220) and two rear conveying components, each rear conveying component comprises a second driving wheel, a second driven wheel and a rear paper conveying belt (221), the two driving wheels are installed at two ends of the rear paper conveying transmission shaft (219) respectively, the two second driven wheels are installed at two ends of the rear paper conveying synchronous shaft (220) respectively, two ends of the rear paper conveying transmission shaft (219) are installed on the left side plate (112) and the right side plate (113) respectively, two ends of the rear paper conveying synchronous shaft (220) are installed on the left side plate (112) and the right side plate (113) respectively, the rear paper conveying transmission shaft (219) is installed at one end of the right side plate (113) and is provided with a rear input gear (222), the driving motor drives the rear paper conveying transmission shaft (219) to rotate forwards and backwards through gear engagement.

6. The stylus printer according to claim 5, wherein: the back paper feeding component comprises a back mounting frame (223), the back mounting frame (223) is mounted at the end parts of the back paper feeding transmission shaft (219) and the back paper feeding synchronous shaft (220), a paper pressing plate (224) is arranged on the back mounting frame (223), and the paper pressing plate (224) is located above the back paper feeding conveyor belt (221) correspondingly.

7. The stylus printer according to claim 1, wherein: the paper feeding shaft (215) is arranged at the end part of the left side plate (112) and is provided with an elastic pressing sheet (226), one end of the elastic pressing sheet (226) is arranged on the left side plate (112), and the side surface of the other end of the elastic pressing sheet (226) is propped against the end surface of the paper feeding shaft (215).

8. The stylus printer according to claim 1, wherein: an arc-shaped surface is formed on the side surface of the third upper limiting part, and an arc-shaped surface is formed on the side surface of the third lower limiting part.

9. The stylus printer according to claim 1, wherein: third mounting bracket (316) are installed and are used for driving coloring transmission shaft (323) that typewriter ribbon (315) removed, the output of third motor (317) is through the drive of the tooth meshing coloring transmission shaft (323), the side shaping of coloring frame (314) has and supplies the tip male third through-hole of coloring transmission shaft (323), the one end of coloring transmission shaft (323) is installed and is colored input gear, the output of third motor (317) is through the drive of the tooth meshing coloring input gear rotates, the other end shaping of coloring transmission shaft (323) has a plurality of teeth of a cogwheel.

10. The stylus printer according to claim 1, wherein: print backing plate (416) of flexible glue material are installed to print bottom plate (212), print backing plate (416) are arranged through printing plate (417) print bottom plate (212), print backing plate (416) are fixed the upside of printing plate (417), printing plate (417) are arranged through the gum print bottom plate (212), print bottom plate (212) shaping has and is used for arranging fourth mounting groove (421) of print backing plate (416).

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