CN203472292U

CN203472292U - Printer

Info

Publication number: CN203472292U
Application number: CN201220695912.1U
Authority: CN
Inventors: 许渊智
Original assignee: Guangzhou Baobi Plastic Products Co Ltd
Current assignee: B&B Exporting Ltd
Priority date: 2012-12-14
Filing date: 2012-12-14
Publication date: 2014-03-12
Anticipated expiration: 2022-12-14

Abstract

The utility model discloses a printer, which comprises a shell which is provided with a paper roll placement cavity, a fixation rack and a control circuit inside, wherein a print head is arranged on the fixation rack, a paper outlet corresponded to the print head is arranged on the shell, a reel is arranged in the paper roll placement cavity, an operation control part is arranged on the fixation rack, an operation window is formed on one side of the shell, a cover plate is arranged on the shell and adapted to the operation window, and after the cover plate covers the operation window, the cover plate is opposite to the end of the reel and covers the operation control part. The printer is more conveniently operated, and the printer is not easily damaged, and the printing reliability is higher.

Description

Printer

Technical field

The utility model relates to a kind of printer.

Background technology

When printer uses, need to fill paper to printer, the existing practice is that the printhead of printer is lifted, and packs printer into printer, then printhead is put down and printed.

The printing paper of printer is installed additional or changed is a step of often using, and adopts which, very easily damage is caused in the inside of printer, especially easily printhead, circuit board, sensing element etc. is caused to damage, also easily causes the damage of printing paper.

In addition, the outside of printer is located at operation control part by existing printer, in print procedure, very easily owing to touching operation control part, causes maloperation.

Summary of the invention

Based on this, the utility model is to overcome the defect of prior art, and a kind of printer is provided, and the utility model more convenient operation is also difficult for causing the damage of printer or printer, and during printing, reliability is higher.

Its technical scheme is as follows:

A printer, comprises housing, is provided with paper roll placed cavity, fixed mount and control circuit in housing, fixed mount is provided with printhead, on housing, be provided with the exit slot corresponding with printhead, in paper roll placed cavity, be provided with spool, on fixed mount, be provided with operation control part, in housing one side, offering operation windows, on housing, be provided with cover plate, this cover plate and operation are windowed and are adapted, cover plate cover operation window after, this cover plate is relative with the axle head of spool, and cover plate covers operation control part; Described spool is positive Polygonal column shape, and it has a plurality of side surfaces, the contact-making surface that each side surface transition position is arc.

Described housing is spheroidal or circular arc, and its bottom is plane, and the center of circle of aforementioned spheroidal or circular arc is higher than the plane of bottom.

The left side of described housing, top side, right side form continuous arc surface, and the cover plate of described housing front side is also plane.

The bottom of described cover plate is connected with the bottom-hinged of described housing.

On the top of described housing front side, be provided with and set about top flat, set about being provided with corresponding buckle between top flat and described cover plate, setting about on top flat, being provided with recess.

On described housing, be also provided with display screen, this display screen and the electrical connection of described control circuit.

On described fixed mount, be provided with paper feed platform and guiding mechanism, described operation control part comprises this guiding mechanism, paper feed platform is provided with the first chute and the second chute being parallel to each other, at the first chute and the second chute place, be respectively equipped with the first banking stop, the second banking stop, under the effect of guiding mechanism, the first banking stop, the second banking stop can move respectively in the first chute, the second chute.

Described the first banking stop, the second banking stop include connect end and with the inside piece that is connected end connection, and the inside piece of the first banking stop is relative with the inside piece of the second banking stop.

Described guiding mechanism comprises regulating wheel, third wheel, the first tooth bar and the second tooth bar, and the first tooth bar, the second tooth bar are connected with described the first banking stop, the second banking stop respectively, regulating wheel and third wheel engagement, and third wheel meshes with the first tooth bar, the second tooth bar simultaneously.

Described regulating wheel comprises the first stacked and affixed gear and the second gear, and described third wheel comprises the 3rd stacked gear and the 4th gear, and the first gear exposes, the second gear and the engagement of the 3rd gear, and the 4th gear meshes with the first tooth bar, the second tooth bar simultaneously; The number of teeth of the first gear is greater than the number of teeth of the second gear, and the number of teeth of the 3rd gear is greater than the number of teeth of the 4th gear.

Described the first tooth bar, the second tooth bar lay respectively at two opposition sides of described the 4th gear.

Side surface at described spool leans on the outer end position of spool to be provided with catch, and is provided with at described side surface the sliver radially protruding.

At described side surface, be provided with two cylindrical voids, between two cylindrical voids, form shell fragment, described catch is located at the end of shell fragment.

The cross section of described spool is square, and described shell fragment is located on two sides that spool is relative.

Also include pillow block, this pillow block is installed on the inwall of housing, and described spool is installed on the outer face of pillow block, is provided with printing paper sensing element installation position in pillow block, at the front end face of pillow block, is also provided with sensing hole, and sensing hole is towards paper roll placed cavity.

Described pillow block is truncated cone-shaped.

Top, bottom at described paper feed platform are respectively equipped with transport roller, also include conduction brush, and this conduction brush is towards described paper feed platform, and conduction brush and the electric connection of external electric conductor.

Described transport roller comprises the first roller, second roller and the 3rd roller, and the first roller and described printhead arrange in pairs, and second roller and the 3rd roller arrange in pairs, and described paper feed platform is formed between the first roller and printhead, between second roller and the 3rd roller.

Described conduction brush is at least two, is all located on described paper feed platform, and is all electrically connected with described external electric conductor.

Described conduction brush is two, is respectively the first conduction brush and the second conduction brush, and the first conduction brush is with respect to the more close described spool of described the 3rd roller, the second conduction brush with respect to described printing first watch near described housing.

The bristle of described conduction brush is row's shape, and its orientation is vertical with described paper feed platform.

Described fixed mount and housing are metal material, and described fixed mount is connected with housing and forms described external electric conductor.

On described housing, be provided with clip box.

Top at described housing is provided with top slot, and described clip is box-packed in this top slot.

In described housing, be provided with circuit board and installing rack, described control circuit is installed on circuit board, and circuit board is located on installing rack, and installing rack is fixed in housing, is provided with louvre on housing, and this louvre is towards described circuit board.

Described installing rack is metal material.

Described installing rack comprises body frame and side plate, and side plate is connected with body frame, and described circuit board is installed on side plate.

On the installing rack of described fixed mount, be provided with drive motors.

Described housing comprises base plate, is also provided with louvre on base plate, and this louvre is near described drive motors.

Also include the first roller, second roller, the 3rd roller and enclosing cover, the first roller and printhead are relatively arranged on the front portion of described paper feed platform, second roller and the 3rd roller are relatively arranged on the rear portion of described paper feed platform, and enclosing cover covers printhead, the first roller, second roller, the 3rd roller.

On described fixed mount, be also provided with drive motors, described operation control part includes paper feed operating portion, paper feed operating portion, drive motors are all electrically connected with described control circuit, paper feed operating portion is exposed to described enclosing cover, and drive motors is connected with described the first roller, second roller or the 3rd roller and drives described the first roller, second roller and the 3rd roller.

Described paper feed operating portion comprises paper feed key and moves back paper key, and paper feed key is with respect to moving back the more close described printhead of paper key.

Also include inductive head and lower inductive head, upper inductive head, lower inductive head are relative, and upper inductive head, lower inductive head lay respectively at top, the below of described paper feed platform.

On described fixed mount, be provided with drive motors, travelling gear, the first synchromesh gear, the second synchromesh gear, the first roller and second roller, drive motors has output shaft, this output shaft is provided with output gear, output gear and travelling gear engagement, travelling gear meshes with the first synchromesh gear, the second synchromesh gear simultaneously, the number of teeth of the first synchromesh gear, the second synchromesh gear is equal, and the first roller, second roller are connected with described the first synchromesh gear, the second synchromesh gear respectively.

Described travelling gear comprises the first train of reduction gears, the second train of reduction gears and synchronizing wheel, the first train of reduction gears, the second train of reduction gears include driving tooth and driven tooth, the number of teeth of driving tooth is more than the number of teeth of driven tooth, the driving tooth engagement of output gear and the first train of reduction gears, the driving tooth engagement of the driven tooth of the first train of reduction gears and the second train of reduction gears, the driven tooth of the second train of reduction gears and third wheel engagement.

The axial connecting line level of described the first synchromesh gear, the second synchromesh gear.

Top, bottom at described paper feed platform are respectively equipped with transport roller, are provided with at least two partitions on paper feed platform, form fluting between two partitions, and the transport roller on paper feed platform top contacts cooperation with the transport roller of paper feed platform bottom at fluting place.

Described paper feed platform comprises the first platform and the second platform, is provided with contraposition and lacks on the first platform, and described partition is located on the second platform, and partition stretches in contraposition lacks.

Described transport roller comprises the first roller, second roller and the 3rd roller, the first roller and described printhead arrange in pairs, second roller and the 3rd roller arrange in pairs, and the first roller, second roller are positioned at the top of described paper feed platform, the 3rd roller is located at the bottom of described paper feed platform, second roller, the 3rd roller are provided with at least two axle journals, and described partition is positioned at axle journal, and described the first roller is cylindric.

In housing, be provided with printing paper sensing element, printing paper sensing element is towards paper roll placed cavity, and printing paper sensing element and the electric connection of described control circuit.

On described housing, be provided with observation window, this observation window is towards described paper roll placed cavity.

It should be noted that:

1, described in the application, " printing paper " is not limited to traditional paper or paper slip, and also comprising can be for other laminar article of printing, as colloid wrist strap, and plastics wrist strap, papery wrist strap, thermal wristband etc.

2, described in the application, " first ", " second " do not represent concrete quantity and order, but for the differentiation of component names.

Below the advantage of aforementioned techniques scheme or principle are described.

1, in housing, be provided with paper roll placed cavity, what printhead was independent is arranged on fixed mount, when installing printing paper additional or change printing paper, opens cover plate and exposes operation and window, then printing paper is enclosed within on spool; After printing paper is installed, by operation control part, operate control, so that printing paper is adjusted to optimum state, then cover cover plate and print, avoid false touch in print procedure to operate control part; This structure installs additional or to change printing paper more convenient, has reduced the damage to printing paper and printer, and during printing, reliability is higher.

2, the center of circle of spheroidal or circular arc, higher than the plane of housing bottom, makes printer busy area little; Housing is spheroidal or circular arc, can guarantee that printer has more space, to facilitate installation printing paper, and its good looking appearance.

3, the bottom of described cover plate and the bottom-hinged of described housing are connected, and when opening cover plate, have reduced cover plate to collision and interference between other object of printer side.

4, on the top of housing front side, be provided with and set about top flat, setting about being provided with recess on top flat, when opening cover plate, finger can be pressed on the recess of setting about top flat, and a button, can open cover plate gently.

5, on the housing of printer, be provided with display screen, the type informations such as the print state of printer, can transfer to display screen by control circuit, and outwards show by display screen, use more convenient.

6, paper feed platform is provided with the first chute and the second chute, the first banking stop, the second banking stop can slide respectively in the first chute, the second chute, distance between the first banking stop and the second banking stop is regulated, so that the width between the first banking stop and the second banking stop and the width of band adapt.

7, when operation, stir regulating wheel, and drive third wheel to rotate, because the first tooth bar, the second tooth bar all mesh with third wheel, the displacement of the first banking stop, the second banking stop is equated, the first banking stop, the second banking stop all shift near or remove same distance to middle part, and centering is effective.

8, the number of teeth of the first gear is greater than the number of teeth of the second gear, and the number of teeth of the 3rd gear is greater than the number of teeth of the 4th gear, has deceleration when adjusting, and can realize by adjusting tooth the fine setting of the first banking stop, the second banking stop distance.

9, described the first banking stop, the second banking stop have included and have connected end and inside piece, and the height of inside piece is the thickness of proximity printing paper very, realize better fixedly printing paper and in print procedure, do not produce skew, further guarantee the effect of printing.

10, because spool not adopts cylindrical structural, but adopt just polygon column construction, between spool and paper roll, by corner positions, contact, its contact-making surface is very little, and contact-making surface is arc, and contact-making surface is more level and smooth; Bight and paper roll by positive multiaspect cylindricality position, and have reduced rocking of paper roll, keep paper roll fixing in paper feed process, and printing effect is better.

11, the side surface at described spool is provided with catch, by this catch, paper roll is carried out to axial limiting, has avoided in the axial direction double swerve and comes off from spool, because spool is Polygonal column shape structure, catch can be located on side surface, makes total compact; At described side surface, be provided with the sliver radially protruding, can realize paper roll in paper feed process and roll before can be arbitrary to the further axial limiting of paper roll in center, rock little.

12, described catch is located at the end of shell fragment, and while pressing shell fragment, catch radially inwardly shrinks, and guarantees that paper roll can easily pack at any time, arbitrarily spool into, and shell fragment is upspring can be spacing by paper roll.

13, arrange after pillow block, printing paper sensing element is installed by portion within it, for the service condition of printing paper is carried out to sensing, if printing paper quantity is inadequate, can point out to user, use more convenient, and pillow block can play reinforcement effect to spool, reduce the crooked of spool and distortion.

14,, owing to being provided with conduction brush near paper feed platform, when printing, paper can pass through paper feed platform, now, conduction brush can avoid static to have influence on printing effect at paper surface with the Surface Contact of paper and by the Electrostatic Absorption of paper surface, reduces potential safety hazard.

15, described conduction brush is at least two, can more fully eliminate static, and effect is better.

16, the first conduction brush is with respect to the more close described spool of described the 3rd roller, the second conduction brush with respect to described printing first watch near described housing, the first conduction brush can be eliminated the static that paper friction produces, and the second conduction brush can be eliminated the static that static that transport roller and paper friction produce and printhead generate heat and produce.

17, described fixed mount and housing are metal material, and conduction brush and this fixed mount are electrically connected, and the static that conduction brush produces conducts to fixed mount and leads away by fixed mount.

18, owing to directly clip box being arranged on the box body of printer, do not need to take again the space of desktop, can make desktop cleaner and tidier.

19, clip box is arranged on printer, has reduced cost, also clip box can not overturned in use, use more convenient.

20, on housing, be provided with louvre, this louvre is towards circuit board, and the heat that circuit board distributes can outwards shed by louvre, has improved the radiating effect of printer, has improved service life and the printing effect of printer.

21, installing rack is metal material, and the heat that circuit board dispels the heat can also be passed on the installing rack of this metal material, and outwards distributes by the housing of this installing rack, metal, has further improved the radiating effect of printer.

22, at the base plate place of housing, be also provided with louvre, can improve the radiating effect at drive motors place.

23, be provided with three transport rollers, the first roller is relative with printhead, and second roller is relative with the 3rd roller, according to user's needs, can realize easily paper feed and move back paper, uses more convenient.

24, enclosing cover covers printhead, the first roller, second roller, the 3rd roller, at paper feed or while moving back paper, without printhead is opened, has reduced the chance that dust enters, and also avoids touching by mistake and causes the damage of printhead.

25, this printer can be realized advance and retreat paper easily, in print procedure, can operate at any time and realize advance and retreat paper, allow printing paper contact with printhead, generation rubs, and automatically the dust of printhead is taken away by printing paper, thereby realizes the automatic cleaning function of printhead, further improve the quality of printing, reach beyond thought cleaning effect.

26, by control circuit and paper feed operating portion, can be more easily to paper feed and move back paper and control, even can realize automatic paper feed and automatically move back paper, and realizing paper feed amount and move back the accurate control of paper amount; Paper feed key is with respect to moving back the more close described printhead of paper key, presses near the paper feed of printing first side strongly, and printing paper is to printing first side shifting, presses and moves back paper key away from what print first side, and printing paper, away from printing first side shifting, operates more directly perceived.

27, by upper inductive head, lower inductive head, can position printing paper, also can respond to the paper feed amount of printing paper or move back paper amount, to realize accurate control.

28, when printer is worked, drive motors drives the first synchromesh gear, the second synchromesh gear to rotate by output gear, travelling gear, the first synchromesh gear equates with the rotating speed of the second synchromesh gear, the first roller, second roller are synchronously rotated, when printing paper drives by the first roller, second roller, it moves more reliable, can realize easily the paper feed of printing paper and move back paper, and printing paper is difficult for crooked and paperboard.

29, travelling gear comprises the first train of reduction gears, the second train of reduction gears and synchronizing wheel, by the first reduction gearing and the second reduction gearing, can realize deceleration, makes printer paper feed and move back paper more steady.

30, the axial connecting line level of described the first synchromesh gear, the second synchromesh gear, can guarantee the state of printing paper in basic horizontal.

31, owing to being provided with partition on paper feed platform, between partition, form fluting, paper feed platform top contacts and coordinates and drive printing paper to advance at fluting place with two transport roller of bottom, and partition can stop printing paper last volume and snap in printer; The waste of printing paper and the damage of printer have been reduced.

32, paper feed platform is formed by the first platform and the docking of the second platform, processes and install more convenient.

33, on the transport roller of bottom, be provided with a plurality of axle journals, this axle journal can be stepped down to partition.

34, when printing, the printing paper of web-like is set on spool, when printing paper is less, printing paper sensing element senses the state of printing paper, if printing paper is very few, printing paper sensing element can send cue outwards prompting to control circuit, uses more convenient.

35, on described housing, be provided with observation window, conveniently by naked eyes, directly observe.

Accompanying drawing explanation

Fig. 1 is the structure chart after on printer cover described in the utility model embodiment;

Fig. 2 is the structure chart of printer after opening described in the utility model embodiment;

Fig. 3 is the local disassembly diagram of Fig. 2;

Fig. 4 is in Fig. 3, the partial enlarged drawing at paper feed platform place;

Fig. 5 is in Fig. 3, the partial enlarged drawing at second roller, the 3rd roller and the first conduction brush place;

Fig. 6 is in Fig. 3, the partial enlarged drawing at spool place;

Fig. 7 is the dorsal part structure chart of printer described in the utility model embodiment;

Fig. 8 is that the dorsal part of printer is taken figure apart described in the utility model embodiment;

Fig. 9 is the disassembly diagram at paper feed platform place;

Figure 10 is the bottom view of paper feed platform;

Figure 11 is the drive mechanism figure of fixed mount dorsal part;

Description of reference numerals:

1, housing, 2, paper roll placed cavity, 3, fixed mount, 4, printhead, 5, exit slot, 6, spool, 7, operation control part, 8, cover plate, 9, base plate, 10, arc surface, 11, set about top flat, 12, buckle, 13, recess, 14, display screen, 15, paper feed platform, 16, guiding mechanism, 17, the first chute, 18, the first banking stop, 19, the second banking stop, 20, side surface, 21, contact-making surface, 22, catch, 23, sliver, 24, shell fragment, 25, pillow block, 26, sensing hole, 27, synchronizing wheel, 28, the first roller, 29, second roller, 30, the 3rd roller, 31, the first conduction brush, 32, the second conduction brush, 33, observation window, 34, clip box, 35, paper feed key, 36, move back paper key, 37, louvre, 38, circuit board, 39, body frame, 40, side plate, 41, fluting, 42, the first platform, 43, the second platform, 44, contraposition lacks, and 45, partition, 46, the second chute, 47, axle journal, 48, regulating wheel, 49, drive motors, 50, the first tooth bar, 51, the second tooth bar, 52, upper inductive head, 53, lower inductive head, 54, the first gear, 55, the second gear, 56, the 3rd gear, 57, the 4th gear, 58, output gear, 59, the first synchromesh gear, 60, the second synchromesh gear, 61, the first train of reduction gears, 62, the second train of reduction gears.

The specific embodiment

Below embodiment of the present utility model is elaborated:

As shown in Figure 1 to 11, a kind of printer, comprise housing 1, in housing 1, be provided with paper roll placed cavity 2, fixed mount 3 and control circuit, fixed mount 3 is provided with printhead 4, on housing 1, be provided with the exit slot corresponding with printhead 45, in paper roll placed cavity 2, be provided with spool 6, on fixed mount 3, be provided with operation control part 7, in housing 1 one sides, offer operation and window, on housing 1, be provided with cover plate 8, this cover plate 8 is windowed and is adapted with operation, cover plate 8 cover operation window after, this cover plate 8 is relative with the axle head of spool 6, and cover plate 8 covers operation control part 7.

Described housing 1 is spheroidal or circular arc, and its bottom is plane, and the center of circle of aforementioned spheroidal or circular arc is higher than the plane of bottom.The left side of described housing 1, top side, right side form continuous arc surface 10, and the cover plate 8 of described housing 1 front side is also plane.The bottom of described cover plate 8 is connected with the bottom-hinged of described housing 1.On the top of described housing 1 front side, be provided with and set about top flat 11, set about being provided with between top flat 11 and described cover plate 8 corresponding buckle buckle 12, setting about on top flat 11, being provided with recess 13.

On described housing 1, be also provided with display screen 14, this display screen 14 and described control circuit electrical connection.

On described fixed mount 3, be provided with paper feed platform 15 and guiding mechanism 16, described operation control part 7 comprises this guiding mechanism 16, paper feed platform 15 is provided with the first chute 17 and the second chute 46 being parallel to each other, at the first chute 17 and the second chute 46 places, be respectively equipped with the first banking stop 18, the second banking stop 19, under the effect of guiding mechanism 16, the first banking stop 18, the second banking stop 19 can be respectively in the first chute 17, the interior movements of the second chute 46.Described the first banking stop 18, the second banking stop 19 include connect end and with the inside piece that is connected end connection, and the inside piece of the first banking stop 18 is relative with the inside piece of the second banking stop 19.Described guiding mechanism 16 comprises that regulating wheel 48, third wheel, the first tooth bar 50 and the second tooth bar 51, the first tooth bars 50, the second tooth bar 51 are connected with described the first banking stop 18, the second banking stop 19 respectively.Described regulating wheel 48 comprises the first stacked and affixed gear 54 and the second gear 55, described third wheel comprises the 3rd stacked gear 56 and the 4th gear 57, the first gear 54 exposes, the second gear 55 and the 3rd gear 56 engagements, and the 4th gear 57 meshes with the first tooth bar 50, the second tooth bar 51 simultaneously; The number of teeth of the first gear 54 is greater than the number of teeth of the second gear 55, and the number of teeth of the 3rd gear 56 is greater than the number of teeth of the 4th gear 57.Described the first tooth bar 50, the second tooth bar 51 lay respectively at two opposition sides of described the 4th gear 57.

Described spool 6 is positive Polygonal column shape, and it has a plurality of side surfaces 20, the contact-making surface 21 that each side surface 20 transition positions are arc.Side surface 20 at described spool 6 leans on the outer end position of spool 6 to be provided with catch 22, and is provided with at described side surface 20 sliver 23 radially protruding.At described side surface 20, be provided with two cylindrical voids, between two cylindrical voids, form shell fragment 24, described catch 22 is located at the end of shell fragment 24.The cross section of described spool 6 is square, and described shell fragment 24 is located on two sides that spool 6 is relative.Also include pillow block 25, this pillow block 25 is installed on the inwall of housing 1, described spool 6 is installed on the outer face of pillow block 25, in pillow block 25, be provided with printing paper sensing element installation position, front end face at pillow block 25 is also provided with sensing hole 26, sensing hole 26 is towards paper roll placed cavity 2, and described pillow block 25 is truncated cone-shaped.

Also include conduction brush, this conduction brush is towards described paper feed platform 15, and conduction brush and the electric connection of external electric conductor.Described transport roller comprises the first roller 28, second roller 29 and the 3rd roller 30, the first roller 28, second roller 29 are located at the bottom of paper feed platform, the 3rd roller 30 is located at the top of paper feed platform, the first roller 28 arranges in pairs with described printhead 4, second roller 29 and the 3rd roller 30 arrange in pairs, and described paper feed platform 15 is formed between the first roller 28 and printhead 4, between second roller 29 and the 3rd roller 30.Described conduction brush is two, be respectively the first conduction brush 31 and the second conduction brush 32, the first conduction brush 31 with respect to more close described spool 6, the second conduction brush 32 of described the 3rd roller 30 with respect to the more close described housing 1 of described printhead 4.The bristle of described conduction brush is row's shape, and its orientation is vertical with described paper feed platform 15.Described fixed mount 3 and housing 1 are metal material, and described external electric conductor is this fixed mount 3.

On described housing 1, be provided with clip box 34.Top at described housing 1 is provided with top slot, and described clip box 34 is loaded in this top slot.

In described housing 1, be provided with circuit board 38 and installing rack, described control circuit is installed on circuit board 38, and circuit board 38 is located on installing rack, and installing rack is fixed in housing 1, is provided with louvre 37 on housing 1, and this louvre 37 is towards described circuit board 38.Described installing rack is metal material.Described installing rack comprises body frame 39 and side plate 40, and side plate 40 is connected with body frame 39, and described circuit board 38 is installed on side plate 40.On the installing rack of described fixed mount 3, be provided with drive motors 49.Described housing 1 comprises base plate 9, is also provided with louvre 37 on base plate 9, and this louvre 37 is near described drive motors 49.

Also include enclosing cover, the first roller 28 and printhead 4 are relatively arranged on the front portion of described paper feed platform 15, and second roller 29 and the 3rd roller 30 are relatively arranged on the rear portion of described paper feed platform 15, and enclosing cover covers printhead 4, the first roller 28, second roller 29, the 3rd roller 30.Described operation control part 7 includes paper feed operating portion, paper feed operating portion, drive motors 49 are all electrically connected with described control circuit, paper feed operating portion is exposed to described enclosing cover, and drive motors 49 is connected with described the first roller 28, second roller 29 or the 3rd roller 30 and drives described the first roller 28, second roller 29 and the 3rd roller 30.Described paper feed operating portion comprises paper feed key 35 and moves back paper key 36, and paper feed key 35 is with respect to moving back the more close described printhead 4 of paper key 36.Also include inductive head 52 and lower inductive head 53, upper inductive head 52, lower inductive head 53 are relative, and upper inductive head 52, lower inductive head 53 lay respectively at top, the below of described paper feed platform 15.

On described fixed mount 3, be provided with travelling gear, the first synchromesh gear 59, the second synchromesh gear 60,, drive motors 49 has output shaft, this output shaft is provided with output gear 58, output gear 58 and travelling gear engagement, travelling gear meshes with the first synchromesh gear 59, the second synchromesh gear 60 simultaneously, the number of teeth of the first synchromesh gear 59, the second synchromesh gear 60 is equal, and the first roller 28, second roller 29 are connected with described the first synchromesh gear 59, the second synchromesh gear 60 respectively.Described travelling gear comprises the first train of reduction gears 61, the second train of reduction gears 62 and synchronizing wheel 27, the first train of reduction gears 61, the second train of reduction gears 62 include driving tooth and driven tooth, the number of teeth of driving tooth is more than the number of teeth of driven tooth, the driving tooth engagement of output gear 58 and the first train of reduction gears 61, the driving tooth engagement of the driven tooth of the first train of reduction gears 61 and the second train of reduction gears 62, the driven tooth of the second train of reduction gears 62 and third wheel engagement.The axial connecting line level of described the first synchromesh gear 59, the second synchromesh gear 60.

Top, bottom at described paper feed platform 15 are respectively equipped with transport roller, on paper feed platform 15, be provided with at least two partitions 45, between two partitions 45, form fluting 41, the transport roller on paper feed platform 15 tops contacts cooperation with the transport roller of paper feed platform 15 bottoms at fluting 41 places.Described paper feed platform 15 comprises the first platform 42 and the second platform 43, is provided with contraposition and lacks 44 on the first platform 42, and described partition 45 is located on the second platform 43, and partition 45 stretches into contraposition and lacks in 44.And the first roller 28, second roller 29 are positioned at the top of described paper feed platform 15, the 3rd roller 30 is located at the bottom of described paper feed platform 15, and second roller 29, the 3rd roller 30 are provided with at least two axle journals 47, and described partition 45 is positioned at axle journal 47, and described the first roller 28 is cylindric.

In housing 1, be provided with printing paper sensing element, printing paper sensing element is towards paper roll placed cavity 2, and printing paper sensing element and the electric connection of described control circuit.On described housing 1, be provided with observation window 33, this observation window 33 is towards described paper roll placed cavity 2.

1, in housing 1, be provided with paper roll placed cavity 2, what printhead 4 was independent is arranged on fixed mount 3, when installing printing paper additional or change printing paper, opens cover plate 8 and exposes operation and window, then printing paper is enclosed within on spool 6; After printing paper is installed, by operation control part 7, operate control, so that printing paper is adjusted to optimum state, then cover cover plate 8 and print, avoid false touch in print procedure to operate control part 7; This structure installs additional or to change printing paper more convenient, has reduced the damage to printing paper and printer, and during printing, reliability is higher.

2, the center of circle of spheroidal or circular arc, higher than the plane of housing 1 bottom, makes printer busy area little; Housing 1 is spheroidal or circular arc, can guarantee that printer has more space, to facilitate installation printing paper, and its good looking appearance.

3, the bottom of described cover plate 8 is connected with the bottom-hinged of described housing 1, when opening cover plate 8, has reduced collision and interference between other objects of 8 pairs of printer sides of cover plate.

4, on the top of housing 1 front side, be provided with and set about top flat 11, setting about being provided with recess 13 on top flat 11, when opening cover plate 8, finger can be pressed on the recess 13 of setting about top flat 11, and a button, can open cover plate 8 gently.

5, on the housing 1 of printer, be provided with display screen 14, the type informations such as the print state of printer, can transfer to display screen 14 by control circuit, and outwards show by display screen 14, use more convenient.

6, paper feed platform 15 is provided with the first chute 17 and the second chute 46, the first banking stop 18, the second banking stop 19 can be respectively in the first chute 17, the interior slips of the second chute 46, distance between the first banking stop 18 and the second banking stop 19 is regulated, so that the width between the first banking stop 18 and the second banking stop 19 and the width of band adapt.

7, when operation, stir regulating wheel 48, and drive third wheel to rotate, because the first tooth bar 50, the second tooth bar 51 all mesh with third wheel, the displacement of the first banking stop 18, the second banking stop 19 is equated, the first banking stop 18, the second banking stop 19 all shift near or remove same distance to middle part, and centering is effective.

8, the number of teeth of the first gear 54 is greater than the number of teeth of the second gear 55, and the number of teeth of the 3rd gear 56 is greater than the number of teeth of the 4th gear 57, has deceleration when adjusting, and can realize by adjusting tooth the fine setting of the first banking stop 18, the second banking stop 19 distances.

9, described the first banking stop 18, the second banking stop 19 have included and have connected end and inside piece, and the height of inside piece is the thickness of proximity printing paper very, realize better fixedly printing paper and in print procedure, do not produce skew, further guarantee the effect of printing.

10, because spool 6 not adopts cylindrical structural, but adopt just polygon column construction, between spool 6 and paper roll, by corner positions, contact, its contact-making surface 21 is very little, and contact-making surface 21 is arc, and contact-making surface 21 is more level and smooth; Bight and paper roll by positive multiaspect cylindricality position, and have reduced rocking of paper roll, keep paper roll fixing in paper feed process, and printing effect is better.

11, the side surface 20 at described spool 6 is provided with catch 22, by 22 pairs of paper rolls of this catch, carry out axial limiting, avoided in the axial direction double swerve and come off from spool 6, because spool 6 is Polygonal column shape structure, catch 22 can be located on side surface 20, be made total compact; At described side surface 20, be provided with the sliver 23 radially protruding, can realize paper roll in paper feed process and roll before can be arbitrary to the further axial limiting of paper roll in center, rock little.

12, described catch 22 is located at the end of shell fragment 24, and while pressing shell fragment 24, catch 22 radially inwardly shrinks, and guarantees that paper roll can easily pack at any time, arbitrarily spool 6 into, and shell fragment 24 is upspring can be spacing by paper roll.

13, arrange after pillow block 25, printing paper sensing element is installed by portion within it, for the service condition of printing paper is carried out to sensing, if printing paper quantity is inadequate, can point out to user, use more conveniently, and pillow block 25 can play reinforcement effect to spool 6, reduces the crooked of spool 6 and distortion.

14,, owing to being provided with conduction brush near paper feed platform 15, when printing, paper can pass through paper feed platform 15, now, conduction brush can avoid static to have influence on printing effect at paper surface with the Surface Contact of paper and by the Electrostatic Absorption of paper surface, reduces potential safety hazard.

15, described conduction brush is two, can more fully eliminate static, and effect is better.

16, the first conduction brush 31 is with respect to the more close described spool 6 of described the 3rd roller 30, the second conduction brush 32 is with respect to the more close described housing 1 of described printhead 4, the first conduction brush 31 can be eliminated the static that paper friction produces, and the second conduction brush 32 can be eliminated the static that static that transport roller and paper friction produce and printhead 4 generate heat and produce.

17, described fixed mount 3 and housing 1 are metal material, and conduction brush and this fixed mount 3 are electrically connected, and the static that conduction brush produces conducts to fixed mount 3 and leads away by fixed mount 3.

18, owing to directly clip box 34 being arranged on the box body of printer, do not need to take again the space of desktop, can make desktop cleaner and tidier.

19, clip box 34 is arranged on printer, has reduced cost, also clip box 34 can not overturned in use, use more convenient.

20, on housing 1, be provided with louvre 37, this louvre 37 is towards circuit board 38, and the heat that circuit board 38 distributes can outwards shed by louvre 37, has improved the radiating effect of printer, has improved service life and the printing effect of printer.

21, the fixed mount that installing rack is metal, the heat that circuit board 38 dispels the heat can also be passed on the installing rack of this metal material, and outwards distributes by this installing rack, has further improved the radiating effect of printer.

22, at base plate 9 places of housing 1, be also provided with louvre 37, can improve the radiating effect at drive motors 49 places.

23, be provided with three transport rollers, the first roller 28 is relative with printhead 4, and second roller 29 is relative with the 3rd roller 30, according to user's needs, can realize easily paper feed and move back paper, uses more convenient.

24, enclosing cover covers printhead 4, the first roller 28, second roller 29, the 3rd roller 30, at paper feed or while moving back paper, without printhead 4 is opened, has reduced the chance that dust enters, and also avoids touching by mistake and causes the damage of printhead 4.

25, this printer can be realized advance and retreat paper easily, in print procedure, can operate at any time and realize advance and retreat paper, allow printing paper contact with printhead 4, generation rubs, and automatically the dust of printhead 4 is taken away by printing paper, thereby realizes the automatic cleaning function of printhead 4, further improve the quality of printing, reach beyond thought cleaning effect.

26, by control circuit and paper feed operating portion, can be more easily to paper feed and move back paper and control, even can realize automatic paper feed and automatically move back paper, and realizing paper feed amount and move back the accurate control of paper amount; Paper feed key 35 is with respect to moving back the more close described printhead 4 of paper key 36, press near the paper feed of printhead 4 one sides strongly, printing paper is to printhead 4 one side shiftings, presses to move back paper key 36 away from printhead 4 one sides, printing paper, away from printhead 4 one side shiftings, operates more directly perceived.

27, by upper inductive head 52, lower inductive head 53, can position printing paper, also can respond to the paper feed amount of printing paper or move back paper amount, can realize accurate control.

28, when printer is worked, drive motors 49 drives the first synchromesh gear 59, the second synchromesh gear 60 to rotate by output gear 58, travelling gear, the first synchromesh gear 59 equates with the rotating speed of the second synchromesh gear 60, the first roller 28, second roller 29 are synchronously rotated, when printing paper drives by the first roller 28, second roller 29, it moves more reliable, can realize easily the paper feed of printing paper and move back paper, and printing paper is difficult for crooked and paperboard.

29, travelling gear comprises the first train of reduction gears 61, the second train of reduction gears 62 and synchronizing wheel 27, by the first reduction gearing and the second reduction gearing, can realize deceleration, makes printer paper feed and move back paper more steady.

30, the axial connecting line level of described the first synchromesh gear 59, the second synchromesh gear 60, can guarantee the state of printing paper in basic horizontal.

31, owing to being provided with partition 45 on paper feed platform 15, between partition 45, form fluting 41, paper feed platform 15 tops contact and coordinate and drive printing paper to advance at fluting 41 places with two transport rollers of bottom, and partition 45 can stop printing paper last volume and snap in printer; The waste of printing paper and the damage of printer have been reduced.

32, paper feed platform 15 is formed by the first platform 42 and the second platform 43 docking, processes and install more convenient.

33, on the transport roller of bottom, be provided with a plurality of axle journals 47, this axle journal 47 can be stepped down to partition 45.

34, when printing, the printing paper of web-like is set on spool 6, when printing paper is less, printing paper sensing element (be positioned at sensing hole 26 after) senses the state of printing paper, if printing paper is very few, printing paper sensing element can send cue outwards prompting to control circuit, uses more convenient.

35, on described housing 1, be provided with observation window 33, conveniently by naked eyes, directly observe.

The above embodiment has only expressed the specific embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims

1. a printer, it is characterized in that, comprise housing, in housing, be provided with paper roll placed cavity, fixed mount and control circuit, fixed mount is provided with printhead, on housing, be provided with the exit slot corresponding with printhead, in paper roll placed cavity, be provided with spool, on fixed mount, be provided with operation control part, in housing one side, offer operation and window, on housing, be provided with cover plate, this cover plate and operation are windowed and are adapted, cover plate cover operation window after, this cover plate is relative with the axle head of spool, and cover plate covers operation control part; Described spool is positive Polygonal column shape, and it has a plurality of side surfaces, the contact-making surface that each side surface transition position is arc.

2. printer according to claim 1, is characterized in that, described housing is spheroidal or circular arc, and its bottom is plane, and the center of circle of aforementioned spheroidal or circular arc is higher than the plane of bottom.

3. printer according to claim 2, is characterized in that, the left side of described housing, top side, right side form continuous arc surface, and the cover plate of described housing front side is also plane.

4. printer according to claim 1, is characterized in that, the bottom of described cover plate is connected with the bottom-hinged of described housing.

5. printer according to claim 4, is characterized in that, on the top of described housing front side, is provided with and sets about top flat, sets about being provided with corresponding buckle between top flat and described cover plate, is setting about on top flat, being provided with recess.

6. printer according to claim 1, is characterized in that, is also provided with display screen on described housing, this display screen and the electrical connection of described control circuit.

7. printer according to claim 1, it is characterized in that, on described fixed mount, be provided with paper feed platform and guiding mechanism, described operation control part comprises this guiding mechanism, paper feed platform is provided with the first chute and the second chute being parallel to each other, at the first chute and the second chute place, be respectively equipped with the first banking stop, the second banking stop, under the effect of guiding mechanism, the first banking stop, the second banking stop can move respectively in the first chute, the second chute.

8. printer according to claim 7, is characterized in that, described the first banking stop, the second banking stop include connect end and with the inside piece that is connected end connection, and the inside piece of the first banking stop is relative with the inside piece of the second banking stop.

9. printer according to claim 7, it is characterized in that, described guiding mechanism comprises regulating wheel, third wheel, the first tooth bar and the second tooth bar, the first tooth bar, the second tooth bar are connected with described the first banking stop, the second banking stop respectively, regulating wheel and third wheel engagement, third wheel meshes with the first tooth bar, the second tooth bar simultaneously.

10. printer according to claim 9, it is characterized in that, described regulating wheel comprises the first stacked and affixed gear and the second gear, described third wheel comprises the 3rd stacked gear and the 4th gear, the first gear exposes, the second gear and the engagement of the 3rd gear, the 4th gear meshes with the first tooth bar, the second tooth bar simultaneously; The number of teeth of the first gear is greater than the number of teeth of the second gear, and the number of teeth of the 3rd gear is greater than the number of teeth of the 4th gear.

11. printers according to claim 10, is characterized in that, described the first tooth bar, the second tooth bar lay respectively at two opposition sides of described the 4th gear.

12. printers according to claim 1, is characterized in that, be provided with catch, and be provided with at described side surface the sliver radially protruding at the side surface of described spool by the outer end position of spool.

13. according to printer described in claim 12, it is characterized in that, at described side surface, is provided with two cylindrical voids, between two cylindrical voids, forms shell fragment, and described catch is located at the end of shell fragment.

14. according to printer described in claim 13, it is characterized in that, the cross section of described spool is square, and described shell fragment is located on two sides that spool is relative.

15. printers according to claim 1, it is characterized in that, also include pillow block, this pillow block is installed on the inwall of housing, described spool is installed on the outer face of pillow block, in pillow block, be provided with printing paper sensing element installation position, at the front end face of pillow block, be also provided with sensing hole, sensing hole is towards paper roll placed cavity.

16. according to printer described in claim 15, it is characterized in that, described pillow block is truncated cone-shaped.

17. according to printer described in any one in claim 1 to 11, it is characterized in that, in top, the bottom of described paper feed platform, is respectively equipped with transport roller, also includes conduction brush, and this conduction brush is towards described paper feed platform, and conduction brush and the electric connection of external electric conductor.

18. according to printer described in claim 17, it is characterized in that, described transport roller comprises the first roller, second roller and the 3rd roller, the first roller and described printhead arrange in pairs, second roller and the 3rd roller arrange in pairs, and described paper feed platform is formed between the first roller and printhead, between second roller and the 3rd roller.

19. according to printer described in claim 18, it is characterized in that, described conduction brush is at least two, is all located on described paper feed platform, and is all electrically connected with described external electric conductor.

20. according to printer described in claim 19, it is characterized in that, described conduction brush is two, is respectively the first conduction brush and the second conduction brush, the first conduction brush is with respect to the more close described spool of described the 3rd roller, the second conduction brush with respect to described printing first watch near described housing.

21. according to printer described in claim 17, it is characterized in that, the bristle of described conduction brush is row's shape, and its orientation is vertical with described paper feed platform.

22. according to printer described in claim 17, it is characterized in that, described fixed mount and housing are metal material, and described fixed mount is connected with housing and forms described external electric conductor.

23. according to printer described in any one in claim 1 to 11, it is characterized in that, is provided with clip box on described housing.

24. according to printer described in claim 23, it is characterized in that, on the top of described housing, is provided with top slot, and described clip is box-packed in this top slot.

25. according to printer described in any one in claim 1 to 11, it is characterized in that, in described housing, be provided with circuit board and installing rack, described control circuit is installed on circuit board, circuit board is located on installing rack, installing rack is fixed in housing, is provided with louvre on housing, and this louvre is towards described circuit board.

26. according to printer described in claim 25, it is characterized in that, described installing rack is metal material.

27. according to printer described in claim 25, it is characterized in that, described installing rack comprises body frame and side plate, and side plate is connected with body frame, and described circuit board is installed on side plate.

28. according to printer described in claim 25, it is characterized in that, on the installing rack of described fixed mount, is provided with drive motors.

29. according to printer described in claim 28, it is characterized in that, described housing comprises base plate, is also provided with louvre on base plate, and this louvre is near described drive motors.

30. according to printer described in any one in claim 1 to 11, it is characterized in that, also include the first roller, second roller, the 3rd roller and enclosing cover, the first roller and printhead are relatively arranged on the front portion of described paper feed platform, second roller and the 3rd roller are relatively arranged on the rear portion of described paper feed platform, and enclosing cover covers printhead, the first roller, second roller, the 3rd roller.

31. according to printer described in claim 30, it is characterized in that, on described fixed mount, be also provided with drive motors, described operation control part includes paper feed operating portion, paper feed operating portion, drive motors are all electrically connected with described control circuit, paper feed operating portion is exposed to described enclosing cover, and drive motors is connected with described the first roller, second roller or the 3rd roller and drives described the first roller, second roller and the 3rd roller.

32. according to printer described in claim 30, it is characterized in that, described paper feed operating portion comprises paper feed key and move back paper key, and paper feed key is with respect to moving back the more close described printhead of paper key.

33. according to printer described in claim 30, it is characterized in that, also includes inductive head and lower inductive head, and upper inductive head, lower inductive head are relative, and upper inductive head, lower inductive head lay respectively at top, the below of described paper feed platform.

34. according to printer described in any one in claim 1 to 11, it is characterized in that, on described fixed mount, be provided with drive motors, travelling gear, the first synchromesh gear, the second synchromesh gear, the first roller and second roller, drive motors has output shaft, this output shaft is provided with output gear, output gear and travelling gear engagement, travelling gear meshes with the first synchromesh gear, the second synchromesh gear simultaneously, the number of teeth of the first synchromesh gear, the second synchromesh gear is equal, and the first roller, second roller are connected with described the first synchromesh gear, the second synchromesh gear respectively.

35. according to printer described in claim 34, it is characterized in that, described travelling gear comprises the first train of reduction gears, the second train of reduction gears and synchronizing wheel, the first train of reduction gears, the second train of reduction gears include driving tooth and driven tooth, the number of teeth of driving tooth is more than the number of teeth of driven tooth, the driving tooth engagement of output gear and the first train of reduction gears, the driving tooth engagement of the driven tooth of the first train of reduction gears and the second train of reduction gears, the driven tooth of the second train of reduction gears and third wheel engagement.

36. according to printer described in claim 34, it is characterized in that, the axial connecting line level of described the first synchromesh gear, the second synchromesh gear.

37. according to printer described in any one in claim 1 to 11, it is characterized in that, top, bottom at described paper feed platform are respectively equipped with transport roller, on paper feed platform, be provided with at least two partitions, between two partitions, form fluting, the transport roller on paper feed platform top contacts cooperation with the transport roller of paper feed platform bottom at fluting place.

38. according to printer described in claim 37, it is characterized in that, described paper feed platform comprises the first platform and the second platform, is provided with contraposition and lacks on the first platform, and described partition is located on the second platform, and partition stretches in contraposition lacks.

39. according to printer described in claim 37, it is characterized in that, described transport roller comprises the first roller, second roller and the 3rd roller, the first roller and described printhead arrange in pairs, and second roller and the 3rd roller arrange in pairs, and the first roller, second roller are positioned at the top of described paper feed platform, the 3rd roller is located at the bottom of described paper feed platform, second roller, the 3rd roller are provided with at least two axle journals, and described partition is positioned at axle journal, and described the first roller is cylindric.

40. according to printer described in any one in claim 1 to 11, it is characterized in that, is provided with printing paper sensing element in housing, and printing paper sensing element is towards paper roll placed cavity, and printing paper sensing element and the electric connection of described control circuit.

41. according to printer described in claim 40, it is characterized in that, on described housing, is provided with observation window, and this observation window is towards described paper roll placed cavity.