CN105500937B

CN105500937B - Printer

Info

Publication number: CN105500937B
Application number: CN201510932552.0A
Authority: CN
Inventors: 许渊智
Original assignee: B&B Exporting Ltd
Current assignee: B&B Exporting Ltd
Priority date: 2015-12-14
Filing date: 2015-12-14
Publication date: 2017-08-11
Anticipated expiration: 2035-12-14
Also published as: CN105500937A

Abstract

The present invention relates to a kind of printer of offer, including：Frame, the frame is provided with two paper feed passages, including the first paper feed passage and the second paper feed passage, frame includes panel layer, intermediate layer, support, and intermediate layer is located at below panel layer, is the first paper feed passage between panel layer and intermediate layer, support is located at below intermediate layer, it is the second paper feed passage between intermediate layer and support, frame is provided with printhead, and the first paper feed passage and the second paper feed passage are docked with printhead respectively；Wherein, panel layer is removably installed on support, and intermediate layer is removably installed on panel layer or support；Or, panel layer is removably installed on intermediate layer, and intermediate layer is removably installed on support.Can switch makes paper feed passage, carries out multitask printing, improves printing effect.When a failure occurs, panel layer and intermediate layer are detachably connected with support, and panel layer, intermediate layer are pulled down, and are maintained easily or are fixed a breakdown.

Description

Printer

Technical field

The invention belongs to print, print field, and in particular to a kind of printer.

Background technology

Using the printer of drum printing paper, a roll of printing paper can only be typically installed, paper to be printed is changed again after being finished New printing paper, printing effect is low, current printing paper can only be printed, print out task is single, the applicability of printer Difference.

The content of the invention

Based on this, the invention reside in the defect for overcoming prior art there is provided a kind of printer, multiple printings can be used Paper, service efficiency is high.

Its technical scheme is as follows：

A kind of printer, including：Frame, the frame is provided with two paper feed passages, including the first paper feed passage and the Two paper feed passages, frame includes panel layer, intermediate layer, support, and intermediate layer is located at below panel layer, between panel layer and intermediate layer For the first paper feed passage, support is located at below intermediate layer, is the second paper feed passage, frame between intermediate layer and support Printhead is provided with, the first paper feed passage and the second paper feed passage are docked with printhead respectively；Wherein, panel layer is removably pacified Loaded on support, intermediate layer is removably installed on panel layer or support；Or, panel layer is removably installed in intermediate layer On, intermediate layer is removably installed on support.

In one of the embodiments, the support is provided with slide rail, and the panel layer and the intermediate layer are installed on institute State on slide rail, the panel layer is slidably matched with the support, the intermediate layer is slidably matched with the support.

In one of the embodiments, the slide rail is shaft-like, and the first end of the slide rail is installed on the panel layer, The support is provided with accommodating cavity and the first slide opening for connect with the accommodating cavity, and the second end of the slide rail passes through described the One slide opening is stretched into the accommodating cavity, and the slide rail is slidably matched with the support.

In one of the embodiments, the intermediate layer is provided with the second slide opening, and the slide rail passes through second slide opening, The intermediate layer is slidably matched with the slide rail.

In one of the embodiments, the inwall of the accommodating cavity is provided with the first buckle, and first buckle is located at institute The edge of the first slide opening is stated, the second end of the slide rail is provided with the second buckle, and first buckle matches with second buckle Close.

In one of the embodiments, the intermediate layer suppresses hole, the first elastomer and first provided with first and suppresses body, Described first suppresses body and first elastomer is installed on described first and suppressed in hole, one end of first elastomer and institute State intermediate layer docking and the other end suppresses body with described first and docked, described first suppresses body at least partly from described first The opening for suppressing hole is stretched out；Or, on the panel layer or/and the support provided with second suppress hole, the second elastomer and Second suppresses body, and described second suppresses body and second elastomer is installed on described second and suppressed in hole, second elasticity One end of body is docked with the panel layer and the other end suppresses body with described second and docked, and described second suppresses body at least portion Divide and stretched out from the described second opening for suppressing hole.

In one of the embodiments, among the intermediate layer and the support, one of them is provided with the first buckle, another Individual to be provided with the first buckle hanging unit, first buckle is removably fastened with first buckle hanging unit；Or/and, the intermediate layer and Among the panel layer, one of them is provided with the second buckle, and another is provided with the second buckle hanging unit, second buckle and described the Two buckle hanging units are removably fastened.

In one of the embodiments, in addition to governor circuit, the governor circuit is installed on the support or described On panel layer, among the support or the panel layer, one of them is provided with safety switch, and another is provided with press section, institute State safety switch to be electrically connected with the governor circuit, when the panel layer slides into first position, the press section is abutted The safety switch.

In one of the embodiments, the panel layer is provided with printhead, and the support is provided with and the printhead The printing pressure roller of corresponding matching, the side surface of the printing pressure roller is the conveyor surface of printing paper, the first paper feed passage and institute The outlet for stating the second paper feed passage is matched with the conveyor surface respectively, the first paper feed passage and the second paper feed passage point Do not docked by the printing pressure roller with the printhead.

In one of the embodiments, offered on the intermediate layer printing pressure roller groove, the printing pressure roller groove with it is described Printhead correspondence, the printing pressure roller is installed at the printing pressure roller groove.

In one of the embodiments, the intermediate layer is at least two, is additional paper feed between two neighboring intermediate layer Passage, the outlet of the additional paper feed passage is matched with the conveyor surface, and the additional paper feed passage passes through the printing pressure roller Docked with the printhead.

In one of the embodiments, the cross section in the intermediate layer is wedge shape, and is beaten described in the top direction of wedge shape Coining roller, the outlet and the outlet of the second paper feed passage of the first paper feed passage are approached.

In one of the embodiments, in addition to：The printing transmission mechanism for the mutual cooperation being arranged in the frame, walk Paper transmission mechanism and paper feed switching mechanism；The printing transmission mechanism include being arranged at the first motor in the frame, The printing gear train being connected with first motor；The paper feed transmission mechanism includes and first motor The paper feed gear train of connection, and at least two paper feeds drive mechanism corresponding with the paper feed gear train；It is described Paper feed switching mechanism is cut including the second motor being arranged in the frame, the swing being connected with second motor Converting mechanism, the oscillation switching mechanism and the paper feed drive mechanism and paper feed gear train corresponding matching.

In one of the embodiments, the paper feed transmission mechanism also includes corresponding with the paper feed gear train First paper feed drive mechanism and the second paper feed drive mechanism；The paper feed switching mechanism also includes and the oscillation switching mechanism The swing change gear of connection, the swing change gear is engaged with the paper feed gear train, while described swing switching Gear connection corresponding with the first paper feed drive mechanism or the second paper feed drive mechanism.

In one of the embodiments, the oscillation switching mechanism includes the reducing gear being connected with second motor Wheel group, the toggle being connected with the train of reduction gears, the toggle connect with the swing change gear Connect, and the swing change gear is slidably connected in the frame.

In one of the embodiments, the positioning that the toggle includes being fixed in the train of reduction gears is shaken Handle, the first rocking arm being hinged with the positioning rocking handle, the second rocking arm being hinged with first rocking arm, and second rocking arm company It is connected in the swing change gear.

In one of the embodiments, the oscillation switching mechanism also includes the switching stroke being fixed in the frame Piece, what one end and the positioning rocking handle fixed that the other end is connected with the train of reduction gears suppresses fixed structure, and is arranged in Simultaneously the bearing assembly that fixed structure is connected is suppressed with described in the switching stroke piece center.

It is in one of the embodiments, described to suppress the fixed shell that fixed mechanism includes fixing with the positioning rocking handle, The elastic component in the fixed shell is arranged at, the ball of the fixed shell is connected and protruded from the elastic component；It is described Switching stroke piece surface is provided with one section of recessed slideway of arc, and the recessed slideway two ends of arc are respectively arranged with two detents, The ball is located in the recessed slideway or detent.

In one of the embodiments, the paper feed gear train includes the paper feed being connected with first motor Driving transition gear, the paper feed for driving transition gear to engage with the paper feed drive synchromesh gear, and the paper feed drives synchronous gear Wheel is engaged with the swing change gear；Second one end is hinged with first rocking arm, in the middle part of second rocking arm It is connected with the swing change gear, and the second rocking arm other end is fixed with paper feed driving synchromesh gear.

In one of the embodiments, the first paper feed drive mechanism includes the first paper feed being arranged in the frame Pressure roller, the first paper feed synchromesh gear being connected with the first paper feed pressure roller, the first paper feed synchromesh gear and the paper feed Gear train correspondence；The second paper feed drive mechanism include being arranged at the second paper feed pressure roller in the frame, with it is described Second paper feed synchromesh gear of the second paper feed pressure roller connection, the second paper feed synchromesh gear and the paper feed gear train pair Should；The swing change gear is engaged with the paper feed gear train, while the swing change gear is walked with described first Paper synchromesh gear or the second paper feed synchromesh gear correspondence are engaged.

In one of the embodiments, the first paper feed drive roll, the first paper feed driven voller, second paper feed Drive roll, the second paper feed driven voller include roller core and the multistage rubber roll body being set around on roller core.

In one of the embodiments, the two ends of the first paper feed driven voller and the second paper feed driven voller, which are blocked, sets Have a circular ball bearing, intermediate plate and the body plate both sides be provided with install the ball bearing circular arc bearing it is recessed Groove.

In one of the embodiments, the printing transmission mechanism also includes what is engaged with the printing gear train Printing synchromesh gear and the printing pressure roller being connected with the printing synchromesh gear.

In one of the embodiments, the frame be provided with least two locating parts, the support be provided with it is described The printing pressure roller of printhead corresponding matching, is print zone, two locating parts between the printing pressure roller and the printhead It is located at the outlet both sides of the print zone, the direction that printing paper comes out by the print zone from the outlet of the print zone respectively For page orientation.

In one of the embodiments, on the page orientation, the first end of the locating part is located at the locating part The second end upstream, the second end of the locating part is provided with paper guide part is moved back, and the paper guide part that moves back is towards the print zone Outlet side to move back paper spigot surface, the paper spigot surface that moves back is obliquely installed relative to the page orientation, two limits Described on the part of position constitutes horn mouth between moving back paper spigot surface, and bell-mouthed width gradually increases along the page orientation； Or, the first end of the locating part is provided with paper feed guide part, the paper feed guide part towards the outlet of the print zone one Side is paper feed spigot surface, and the paper feed spigot surface is obliquely installed relative to the page orientation, the institute on two locating parts State and constitute horn mouth between paper feed spigot surface, and bell-mouthed width is gradually reduced along the page orientation.

In one of the embodiments, the printhead is located at the top of the support, and the locating part is installed on described The upper surface of support, the top of the locating part has spacing pressing plate, and the spacing pressing plate stretches into the outlet of the print zone Top.

In one of the embodiments, on the page orientation, the first end of the spacing pressing plate is positioned at described spacing The upstream at the second end of pressing plate, the second end of the spacing pressing plate is baroclined portion provided with moving back paper, and the barocline bottom in portion of paper of moving back is Move back paper to barocline face, the paper face of baroclining of moving back is obliquely installed relative to the page orientation, the paper that moves back baroclines face and the support Between constitute horn mouth, and bell-mouthed height gradually increases along the page orientation；Or, the first end of the spacing pressure Baroclined portion provided with paper feed, the barocline bottom in portion of the paper feed is baroclined face for paper feed, and the paper feed baroclines face relative to the paper feed Direction is obliquely installed, and the paper feed, which baroclines, constitutes horn mouth between face and the support, and bell-mouthed height along it is described walk Paper direction is gradually reduced.

In one of the embodiments, described at least two among locating part, including symmetrically arranged first locating part and Second locating part, the first rack being connected with first locating part, the second rack being connected with second locating part, and The travelling gear engaged simultaneously with first rack and the second rack, first rack and the second rack are located at the transmission The both sides of gear；Also include the nut-screw mechanism being connected on first locating part or the second locating part.

In one of the embodiments, the nut-screw mechanism includes being connected to first locating part or second spacing Nut on part, and the screw rod being arranged on the nut, the screw rod keep flat with first rack or the second rack OK, the screw rod end is provided with knob.

In one of the embodiments, the support is provided with stamp pad, the stamp pad and offers stopper slot, described First locating part and the second locating part, which are slided, to be arranged in above the stopper slot, and first rack, the second rack and spiral shell Female screw mechanism is respectively positioned on below the stopper slot, and nut-screw mechanism one end stretches out in the stamp pad.

In one of the embodiments, the bottom surface of the panel layer, the top surface in the intermediate layer, the bottom surface in the intermediate layer Among the top surface of the support, at least one of which face provided with least two side by side lead paper fin, it is described to cause fin Length direction match with the page orientation of the corresponding paper feed passage.

In one of the embodiments, in addition to dynamic at least one spool being connected in the frame；The frame bag Symmetrically arranged two side plates are included, each side plate interior sides are provided with least one side plate Access Division, and two sides Side plate Access Division on plate is in correspondence；Each spool includes cylindric axis body, and is respectively arranged at the axle The spool Access Division at body two ends, and two spool Access Divisions respectively with two side plates the side plate Access Division live Dynamic clamping.

In one of the embodiments, the side plate Access Division includes the protrusion frame formation being arranged on the side plate Side plate projection or depressed side board are provided with side plate guide groove, the side plate guide groove, and the side plate guide groove is provided with guide groove opening； Spool depression is provided with the spool Access Division or spool is raised, the spool depression clamping corresponding with side plate projection or The raised clamping corresponding with the depressed side board of the spool.

In one of the embodiments, the spool includes：Axis body, at least two positioning elements and at least two elasticity Part, positioning element is slidably mounted on axis body, and elastic component is corresponded with positioning element to be coordinated, and one end of elastic component is installed on On corresponding positioning element, and the other end is installed on axis body；Wherein, when positioning element is moved to predeterminated position, two Reel installation position is constituted between positioning element, the elastic force of elastic component makes two positioning elements mutually gather.

In one of the embodiments, the positioning element includes sliding block and clamp, and the sliding block is slidably mounted to institute State on axis body, the sliding block is provided with convex, the convex is set on the clamp relative to the lateral projections of the axis body There is first through hole, the clamp is set in outside the axis body by first through hole thereon, two clamps are located at two institutes State between convex, the reel installation position is constituted between two clamps.

In one of the embodiments, the sliding block include connection end and at least two elastic arms, one end of the elastic arm with The connection end is connected and at least two elastic arms are located at the same side of the connection end, and the convex is located at the elastic arm Outside.

In one of the embodiments, the convex on the elastic arm is to stagger at least on the axis body axial direction Two.

In one of the embodiments, the sliding block is two, including the first sliding block and the second sliding block；The elastic component is Two, including the first elastic component and the second elastic component；Described first is sequentially installed with from the first end of the axis body to the second end Sliding block and second sliding block, and the connection end of first sliding block and the connection end of second sliding block approach in opposite directions, institute The one end for stating the first elastic component is installed on the connection end of first sliding block and the other end is installed on the second of the rotating shaft End, one end of second elastic component is installed on the connection end of second sliding block and the other end is installed on the rotating shaft First end.

In one of the embodiments, axocoel is provided with the axis body, the sliding block is installed in the axocoel, the axle Body is provided with fluting, and the convex stretches out out of described fluting, and the axis body includes the first semiaxis and the second semiaxis, and described the One semiaxis and second semiaxis are encircled into the axocoel, and the sliding block is mounted on the inwall of first semiaxis, described Fluting is located between first semiaxis and second semiaxis, described.

In one of the embodiments, the clamp is provided with second boss towards the side of the reel installation position, described Second boss is provided with third through-hole, and the first through hole is connected with the third through-hole, and the axis body passes through the threeway Hole.

The beneficial effects of the present invention are：

Provided with least two paper feed passages, can switch makes paper feed passage, carries out multitask printing, improves printing effect. When a failure occurs, panel layer and intermediate layer are detachably connected with support, and panel layer, intermediate layer are pulled down, and paper feed passage " is beaten Open " be in open state, vacating space is put into for hand or instrument, easily printer or printing paper can be carried out operation with Safeguard, fix a breakdown, when particularly occurring paper jam error, paper feed passage, which is opened, can conveniently observe printing paper state, it is easy to Exclude paper jam error；After failture evacuation, panel layer, intermediate layer will be re-installed on support, can by paper feed passage " closed " To continue printing；The opening and closing of paper feed passage be without instrument it is operable, it is easy to use.

Brief description of the drawings

Fig. 1 is the overall structure figure of the printer of the embodiment of the present invention；

Fig. 2 is the structure chart one of the first paper feed passage open mode in the embodiment of the present invention；

Fig. 3 is the structure chart two of the first paper feed passage open mode in the embodiment of the present invention；

Fig. 4 is the structure chart one of the second paper feed passage open mode in the embodiment of the present invention；

Fig. 5 is the structure chart two of the second paper feed passage open mode in the embodiment of the present invention；

Fig. 6 is the partial sectional view of the printer of the embodiment of the present invention；

Fig. 7 is the first paper feed passage, the second paper feed passage, the structural representation of type channel in the embodiment of the present invention.

Fig. 8 is the dimensional structure diagram one that printer described in the embodiment of the present invention is driven switching device；

Fig. 9 is the dimensional structure diagram two that printer described in the embodiment of the present invention is driven switching device；

Figure 10 is the main structure diagram that printer described in the embodiment of the present invention is driven switching device；

It is vertical after frame and gear train cover plate that Figure 11 is that the transmission switching device of printer described in the embodiment of the present invention is removed Body structural representation；

Figure 12 is that the transmission switching device of printer described in the embodiment of the present invention removes the master after frame and gear train cover plate Depending on structural representation；

Figure 13 is that the step flow of the method for handover control of the transmission switching device of printer described in the embodiment of the present invention is shown It is intended to.

Figure 14 is three-dimensional knot when printer described in the embodiment of the present invention and printer lead the panel layer open of paper structure Structure schematic diagram；

Figure 15 is three-dimensional knot when printer described in the embodiment of the present invention and printer lead the panel layer removal of paper structure Structure schematic diagram；

Figure 16 is section view knot when printer described in the embodiment of the present invention and printer lead the panel layer open of paper structure Structure schematic diagram；

Figure 17 is Figure 16 local A partial enlarged drawing.

Figure 18 is the structure chart of support in the embodiment of the present invention；

The zoomed-in view that Figure 19 is A in Figure 18；

Figure 20 is the structure chart of locating part and support in the embodiment of the present invention；

The sectional view that Figure 21 is B-B in Figure 20；

The sectional view that Figure 22 is C-C in Figure 20.

Figure 23 is dimensional structure diagram when being covered in the removal of printer paper-feeding described in the embodiment of the present invention；

Figure 24 is Figure 23 local A partial structural diagram；

Figure 25 is Figure 23 local B partial structural diagram；

Figure 26 is the sectional perspective structural representation of the removal bottom timesharing of printer paper-feeding described in the embodiment of the present invention；

Figure 27 is the partial structural diagram of Figure 26 Local C.

Figure 28 is the dimensional structure diagram one of spool structure in the embodiment of the present invention；

Figure 29 is the dimensional structure diagram two of spool structure in the embodiment of the present invention；

Figure 30 is the dimensional structure diagram of the frame of spool structure in the embodiment of the present invention；

Figure 31 is the dimensional structure diagram of the axis body of spool structure in the embodiment of the present invention.

Figure 32 is the structure chart one of spool of the embodiment of the present invention；

Figure 33 is the structure chart two of spool of the embodiment of the present invention；

Figure 34 is the structure chart three of spool of the embodiment of the present invention；

Figure 35 is the structural representation of spool of the embodiment of the present invention.

Description of reference numerals：

10th, the first paper feed passage, the 11, second paper feed passage, 12, print zone, 13, panel layer, 14, printhead, 15, second Buckle, 16, second suppresses hole, the 17, second elastic component, and 18, second suppresses body, and 19, intermediate layer, the 20, second buckle hanging unit, 21, One buckle, 22, support, the 23, first buckle hanging unit, the 24, first buckle, 25, slide rail, the 26, second buckle, 27, printing pressure roller, 28, Print transmission mechanism, 29, frame, 30, gear train cover plate, the 31, first motor, the 32, first motor output gear, 33rd, print gear train, the 34, first printing driving transition gear, the 35, second printing driving transition gear, 36, printing it is synchronous Gear, 37, paper feed transmission mechanism, 38, paper feed gear train, 39, paper feed driving transition gear, 40, paper feed driving synchronous gear Wheel, 41, paper feed switching mechanism, the 42, second motor, 43, train of reduction gears, 44, reduction pinion teeth, 45, deceleration gear wheel, 46th, fixed structure is suppressed, 47, toggle, 48, positioning rocking handle, the 49, first rocking arm, the 50, second rocking arm, 51, swing and cut Gear changing, 52, switching stroke piece, 53, paper roll, the 54, first paper advance mechanism, the 55, first paper feed drive roll, the 56, first paper feed from Dynamic roller, the 57, first actuator, 58, marking roll actuator, 59, ramp, 60, printing pressure roller mating groove, the 61, second paper advance mechanism, 62nd, the second paper feed drive roll, the 63, second paper feed driven voller, 64, stamp pad, 65, dancing roll, 66, printing paper, 67, locating part, 68th, spacing pressing plate, 69, move back paper guide part, 70, paper feed guide part, 71, move back paper and barocline portion, 72, paper feed barocline portion, 73, first leads Paper fin, 74, stopper slot, 75, stopping means, the 76, first rack (or second rack), 77, travelling gear, 78, nut, 79, Screw rod, 80, knob, 81, paper feed guide rod, 82, side plate, 83, side plate guide groove, 84, side plate it is raised, 85, axis body, 86, spool depression, 89th, clamp, 90, fluting, 91, limit convex, 92, chute, 93, clamp, 94, first boss, 95, it is spacing lack, 96, second boss, 97th, sliding block, 98, connection end, 99, elastic arm, 100 convexes, 101, reinforcement, 102, slide convex, 103 elastic components, 104, first Semiaxis.

Embodiment

The present invention is described in further detail below, but the implementation of the present invention is not limited to this.

As shown in Fig. 1 to 7, printer includes：Frame 29, the frame 29 is provided with including the first paper feed passage 10 and the Two paper feed passages of two paper feed passages 11, frame 29 includes panel layer 13, intermediate layer 19, support 22, and intermediate layer 19 is located at face The lower section of flaggy 13, is the first paper feed passage 10 between panel layer 13 and intermediate layer 19, and support 22 is located at the lower section of intermediate layer 19, It is the second paper feed passage 11 between intermediate layer 19 and support 22, frame 29 is provided with printhead 14, the first paper feed passage 10 Docked respectively with printhead 14 with the second paper feed passage 11；Wherein, panel layer 13 is removably installed in 22 on support, intermediate layer 19 are removably installed on panel layer 13 or support 22；Or, panel layer 13 is removably installed on intermediate layer 19, middle Layer 19 is removably installed on support 22.

Frame 29 includes slide rail 25, and support 22 is provided with stamp pad, and panel layer 13 is installed on support 22 by slide rail 25, Panel layer 13 is slidably matched with support 22, and panel layer 13 has printhead 14；When panel layer 13 slides into first position, printing First 14 are located above stamp pad, and printhead 14 approaches stamp pad, and print zone 12 is constituted between printhead 14 and stamp pad；When When panel layer 13 slides into the second place, printhead 14 is away from stamp pad.During normal print, panel layer 13 is set to be located at first Put, fed printing sheet carries out normal print into print zone 12；When a failure occurs, sliding surface flaggy 13 is to the second place, this When printhead 14 away from the stamp pad, print zone 12 is " on " in open state, and vacating space is put into for hand or instrument, can Operated or safeguarded with easily opposite flaggy 13 or stamp pad or printing paper, fixed a breakdown；, will after failture evacuation Panel layer 13 slides into first position, and the " closed " of print zone 12 can continue printing；Printing can be opened or closed without instrument Area 12, it is easy to operate.Slide rail 25 can be that linear pattern can also be shaped form, when slide rail 25 is linear pattern, panel layer 13 and machine The relative slip of seat 22 is relative translation, and linear pattern slide rail 25 is simple in construction；When slide rail 25 is shaped form, panel layer 13 and support 22 relative slip except translation also overturn, produce similar " renovating " effect, can further expand printhead 14 and Space between stamp pad, such as slide rail 25 are circular arc, and panel layer 13 is opened backward.In the present embodiment, as shown in fig. 6, Slide rail 25 is shaft-like for straight line, and the first end of slide rail 25 is installed on panel layer 13, support 22 provided with accommodating cavity and with appearance The first slide opening of chamber connection is put, the second end of slide rail 25 is stretched into accommodating cavity through the first slide opening, and slide rail 25 is slided with support 22 Coordinate.Slide rail 25 is hidden in accommodating cavity when flat, is just exposed during upper lift panel layer 13, reduction exposes to the zero of printer surface Part, it is to avoid damage, and good appearance.The inwall of accommodating cavity is provided with the first buckle 24, and the first buckle is located at the first slide opening Edge, the second end of slide rail 25 is provided with the second buckle 26, and the first buckle 24 is engaged with the second buckle 26.Upper lift panel layer 13 When, the first buckle 24 is interlocked with the second buckle 26, locks the position of panel layer 13, prevents panel layer 13 from falling, protection operation The safety of personnel, and prevent panel layer from falling to damaging printer.

Intermediate layer 19 is additionally provided with support 22, intermediate layer 19 is located between panel layer 13 and support 22, and panel layer 13 is with It is the first paper feed passage 10 between interbed 19, is the second paper feed passage 11, the first paper feed passage between intermediate layer 19 and support 22 10 and second paper feed passage 11 connected respectively with print zone 12.First paper feed passage 10 and the second paper feed passage 11 can be defeated respectively Send in printing paper to print zone 12 and print, the two can convey different size or the printing paper of material respectively, improve printer Versatility, can carry out multitask；Can also be the printing paper that the two conveys same specification or material, one of printing paper As standby, standby printing paper is used after another printing paper is finished, printing effect is improved.

Panel layer 13 is provided with printhead 14, and support 22 is beaten provided with the printing pressure roller 27 with the corresponding matching of printhead 14 The side surface of coining roller 27 is the conveyor surface of printing paper, the outlet of the first paper feed passage 10 and the second paper feed passage 11 respectively with it is defeated Face is sent to match, the first paper feed passage 10 and the second paper feed passage 11 are docked by printing pressure roller 27 with printhead 14 respectively.It is middle The cross section of layer 19 is wedge-shaped and wedge-shaped top direction printing pressure roller 27, and the outlet of the first paper feed passage 10 is walked with second The outlet of paper passage 11 is approached.Printing pressure roller groove (not shown), printing pressure roller groove and printhead are offered on intermediate layer 19 14 correspondences, printing pressure roller 27 is installed at the printing pressure roller groove.

Connected after first paper feed passage 10 and the connection of the second paper feed passage 11 with print zone 12, and connectivity part approaches printing First 14.When switching to the second paper feed passage 11 from the first paper feed passage 10, the first paper feed passage 10 moves back paper, then the second paper feed The paper feed of passage 11, the place that the first paper feed passage 10 is connected with the second paper feed passage 11 approaches printhead 14, as shown in fig. 7, Just printing paper can be made to exit the second paper feed as long as moving back paper in the first paper feed passage 10 and printing paper being retreated into a less segment distance The outlet of passage 11, can two printing paper interferences during anti-retaining paper-paper feed, cause failure.

Switching makes during multiple paper feed passages, it is necessary to the original printing paper positioned at print zone 12 be exited into print zone 12, then incite somebody to action Printing paper feeding print zone 12 in another paper feed passage, because paper feed passage is by printing 12 pairs of pressure roller 27 and print zone Connect, only need to printing paper exiting the surface of marking roll 27 when moving back paper, just have logged out print zone 12, will not be to another paper feed passage Paper feed cause interference, prevent the printing paper of two passages is interfered from causing paperboard, influence printing progress.In this way, can be with Smoothly switching performs different print out task using different print zones, improves printing effect.

The present embodiment is not limited to, can be that intermediate layer 19 is at least two, intermediate layer 19 is stacked at panel layer 13 and support Between 22, additional paper feed passage is constituted between two neighboring intermediate layer 19, additional paper feed passage is connected with print zone 12.Additional Fed printing sheet is printed in paper feed passage, further improves the versatility and service efficiency of printer.Set on intermediate layer 19 There is the second slide opening, slide rail 25 passes through the second slide opening, and intermediate layer 19 is slidably matched with slide rail 25.Behind upper lift panel layer 13, first Paper feed passage 10 and print zone 12 are opened, and can now slide intermediate layer 19, open the second paper feed passage 11, convenient to exclude hair Raw failure in the first paper feed passage 10 or in the second paper feed passage 11.After not limited to this or upper lift panel layer 13, Second paper feed passage 11 and print zone 12 are opened, and then slide intermediate layer 19, open the second paper feed passage 11.

Among intermediate layer 19 and support 22, one of them is provided with the first buckle 21, and another is provided with the first buckle hanging unit 23, the One buckle 21 is removably fastened with the first buckle hanging unit 23；Or/and, among intermediate layer 19 and panel layer 13, one of them is provided with Second buckle 15, another is provided with the second buckle hanging unit 20, and the second buckle 15 is removably fastened with the second buckle hanging unit 20.Panel layer 13rd, detachably install, during normal print, panel layer 13 and intermediate layer 19 are fixed between intermediate layer 19, support 22, prevent from moving It is dynamic, it is ensured that print quality.In the present embodiment, as shown in Fig. 3,5, intermediate layer 19 is provided with the first buckle 21, and support 22 is provided with first Buckle hanging unit 23, panel layer 13 is provided with the second buckle 15, and intermediate layer 19 is provided with the second buckle hanging unit 20.Intermediate layer 19 is provided with the first bullet Pressure hole, the first elastomer and first suppress body, and first suppresses body and the first elastomer is installed on first and suppressed in hole, the first elasticity One end of body is docked with intermediate layer 19 and the other end suppresses body with first and docked, and first suppresses body at least partly from the first bullet The opening in hole is pressed to stretch out.First when suppressing the opening in hole towards support 22, opens the first buckle 21 and the first buckle hanging unit 23, the First suppresses body and separates intermediate layer 19 and support 22 under the elastic force of one elastic component, and first suppresses the opening in hole towards panel layer 13 When, the second buckle 15 and the second buckle hanging unit 20 are opened, first suppresses body by intermediate layer 19 and face under the elastic force of the first elastic component Flaggy 13 is separated, and facilitates human hand sliding surface flaggy 13 or intermediate layer 19.

As shown in Fig. 2 on panel layer 13 or/and support 22 suppresses hole 16, the second elastomer and the second bullet provided with second Laminate 18, second, which suppresses the elastomer of body 18 and second, is installed on second and suppresses in hole 16, one end of the second elastomer and panel layer 13 docking and the other end suppress body 18 with second and dock, second suppresses at least part of body 18 from the second opening for suppressing hole 16 Stretch out.Panel layer 13 provided with second suppress hole 16, the second elastomer and second suppress body 18 when, second suppresses the opening in hole 16 Towards intermediate layer 19, the second buckle 15 and the second buckle hanging unit 20 are opened, second suppresses body 18 under the elastic force of the second elastic component 17 Intermediate layer 19 and panel layer 13 are separated, support 22 provided with second suppress hole 16, the second elastomer and second suppress body 18 when, Second suppresses the opening in hole 16 towards intermediate layer 19, the first buckle 21 and the first buckle hanging unit 23 is opened, in the second elastic component 17 Second suppresses body 18 and separates intermediate layer 19 and support 22 under elastic force, facilitates human hand sliding surface flaggy 13 or intermediate layer 19.

Printer also includes governor circuit, and governor circuit is installed on support 22 or panel layer 13, support 22 or face Among flaggy 13, one of them is provided with safety switch, and another is provided with press section, and safety switch is electrically connected with governor circuit, When panel layer 13 slides into first position, press section abuts safety switch.When panel layer 13 only being located at into first position, press Splenium touch-safe is switched, and governor circuit allows to perform print out task, if panel layer 13 is located at the second place, press section does not have Abut to safety switch, governor circuit forced interruption print out task.Prevent panel layer 13 from performing printing when being located at the second place and appointing Business, protects personal safety, also avoids printer from damaging.Governor circuit, press section, safety switch are not shown.

Printer also includes transmission switching device, and transmission switching device includes：The mutual cooperation being arranged in frame 29 Print transmission mechanism 28, paper feed transmission mechanism 37 and paper feed switching mechanism 41.By paper feed switching mechanism 41, paper feed can be switched Transmission mechanism 37, makes printing transmission mechanism 28 be attached from different paper feed passages, and realization is conveyed to different paper rolls Printing.Printing transmission mechanism 28, paper feed transmission mechanism 37 and paper feed switching mechanism 41 are set in printer, by independent paper feed Switching mechanism 41 controls and ensured the changeable selection of the paper feed passage of paper feed transmission mechanism 37, and does not influence paper feed normal operation.

Moreover, as shown in Fig. 9 to Figure 12, above-mentioned printing transmission mechanism 28 includes the first driving electricity being arranged in frame 29 Machine 31, the printing gear train 33 being connected with the first motor 31.Paper feed transmission mechanism 37 includes and the first motor The paper feed gear train 38 of 31 connections.Paper feed switching mechanism 41 include being arranged at the second motor 42 in frame 29, with The oscillation switching mechanism (not indicated in figure) of second motor 42 connection, oscillation switching mechanism and paper feed gear train 38 Corresponding matching.Print the first motor 31 driving printing gear train 33 and paper feed gear train 38 of transmission mechanism 28 Operating, can drive the printing paper on paper roll to supply printing paper to the printhead of printer.

Furthermore, it is possible to set at least two paper rolls and corresponding at least two paper feeds drive mechanism, can respectively to Printhead paper supply, so as to realize many paper roll paper supply printings.One of paper feed drive mechanism is needed to use to carry out paper feeding moreover, working as During printing, it is possible to use paper feed switching mechanism 41 carries out the paper feed drive mechanism for selecting to need that automatically switches, i.e., driven using second The dynamic driving of motor 42 oscillation switching mechanism, makes oscillation switching mechanism connect paper feed gear train 38 and needs the paper feed of paper feed to drive Motivation structure, makes paper feed gear train 38 drive paper feed drive mechanism operating, and realization is sent using the paper feed drive mechanism The purpose of paper printing；And when needing to use another paper feed drive mechanism to carry out paper feeding printing, utilize the paper feed switching mechanism 41 are switched to another paper feed drive mechanism, so that it may realize the purpose that paper feeding printing is carried out using another paper feed drive mechanism. Printed so as to automatic arbitrarily switching from a paper roll in many paper rolls, whole handoff procedure passes through paper feed switching machine Structure 41 is automatically performed, it is not necessary to carry out changing paper roll manually, convenient and simple.

Specifically, as shown in Figure 11 to Figure 12, above-mentioned paper feed transmission mechanism 37 may also include and paper feed gear train 38 corresponding first paper feed drive mechanisms (not illustrated in figure) and the second paper feed drive mechanism (not illustrated in figure), can be with Including more paper feed transmission mechanisms.Paper feed switching mechanism 41 may also include the swing teeth change being connected with oscillation switching mechanism Wheel 51, swings change gear 51 and is engaged with paper feed gear train 38, while swinging the paper feed driving machine of change gear 51 and first Structure or the second paper feed drive mechanism correspondence are connected.By set the first paper feed drive mechanism and the second paper feed drive mechanism two with The corresponding paper feed transmission mechanism of paper feed gear train 38, it is necessary to using the first paper feed drive mechanism carry out paper feeding printing when, just Paper feed switching mechanism 41 is switched to the state being connected with the first paper feed drive mechanism；When need utilize the second paper feed drive mechanism When carrying out paper feeding printing, paper feed switching mechanism 41 is just switched to the state being connected with the second paper feed drive mechanism.Specifically, It is to drive oscillation switching mechanism using the second motor 42, oscillation switching mechanism driving swings change gear 51 and swung, It is connected so that swinging change gear 51 with the first paper feed drive mechanism or the second paper feed drive mechanism, so that the first paper feed be driven Motivation structure or the second paper feed drive mechanism are connected with paper feed gear train 38, then in the driving of the first motor 31 Under, it is possible to achieve the run-in synchronism of the printing paper feed drive mechanism of transmission mechanism 28 and first (or second paper feed drive mechanism), from And realize the purpose that paper feeding printing is carried out using the first paper feed drive mechanism (or second paper feed drive mechanism).

Moreover, above-mentioned oscillation switching mechanism includes train of reduction gears 43 and the reducing gear being connected with the second motor 42 The toggle 47 that wheel group 43 is connected, toggle 47 is connected with swinging change gear 51, and swings change gear 51 are slidably connected in frame 29.The output speed of second motor 42 is reduced to by suitable model by train of reduction gears 43 Enclose, and drive toggle 47 to operate by train of reduction gears 43, switch the swing being connected with toggle 47 Gear 51 is swung, and swings to another position from a position so as to swing change gear 51, you can swing is cut Gear changing 51 is switched at the position being connected with the first paper feed drive mechanism at the position being connected with the second paper feed drive mechanism, Or be switched at the position being connected with the second paper feed drive mechanism at the position being connected with the first paper feed drive mechanism.And And, above-mentioned toggle 47 includes the positioning rocking handle 48 being fixed in train of reduction gears 43 and positions what rocking handle 48 was hinged First Rocker arm 49, the second Rocker arm 50 being hinged with the first Rocker arm 49, and the second Rocker arm 50 is connected in swing change gear 51.Subtract Fast gear train 43 constitutes positioning rocking handle 48, the first Rocker arm 49, the driving source of the toggle 47 of the second Rocker arm 50 formation, makes Positioning rocking handle 48 rotates, so as to drive the first Rocker arm 49 and the second Rocker arm 50 to rotate, so as to drive and the second rocking arm The 50 swing change gears 51 fixed are moved or slided, and realize and the position for swinging change gear 51 is switched.Moreover, slowing down Gear train 43 may include the reduction pinion teeth 44 being connected with the output shaft of the second motor 42, and be engaged with reduction pinion teeth 44 Deceleration gear wheel 45, deceleration gear wheel 45 with positioning rocking handle 48 fix.What reduction pinion teeth 44 and deceleration gear wheel 45 were constituted Train of reduction gears can slow down to the output speed of the second motor 42, with adapt to toggle 47 swing speed and Angle requirement.

In addition, above-mentioned oscillation switching mechanism 41 also includes the switching stroke piece 52 being fixed in frame 29, one end and positioning Rocking handle 48 fixes the other end and the deceleration gear wheel 45 of train of reduction gears 43 is connected suppresses fixed structure 46, and is arranged in and cuts Enter a new line centers of Cheng Pian 52 and with suppressing the bearing assembly (not illustrated in figure) that fixed structure 46 is connected.By setting switching stroke Piece 52 and fixed structure 46 is suppressed, drive train of reduction gears 43 and suppress fixed structure 46 and rotated on switching stroke piece 52 necessarily Distance, so that the positioning rocking handle 48 being connected with suppressing fixed structure 46 rotates certain angle, makes 47 turns of toggle Dynamic angle is fixed value, you can the angle and distance for swinging swing change gear 51 is fixed, so that swinging teeth change Wheel 51 is connected accurate reliable with the first paper feed drive mechanism or the second paper feed drive mechanism, and being not in that connection is insecure causes to pass There is dockingundocking or connects the abnormal conditions such as stuck in dynamic process, can guarantee that it is normal accurately drive the first paper feed drive mechanism or Second paper feed drive mechanism.

Further, the above-mentioned fixed mechanism 46 that suppresses includes (not indicating in figure with the fixed shell that positioning rocking handle 48 is fixed Go out), the elastic component (not illustrated in figure) being arranged in fixed shell is connected and protruded from the ball of fixed shell with elastic component (not illustrated in figure).The surface of switching stroke piece 52 is provided with one section of recessed slideway of arc (not illustrated in figure), the recessed slideway of arc Two ends are respectively arranged with two detents (not indicated in figure), and ball is located in recessed slideway or detent.Second drives The dynamic driving of motor 42 train of reduction gears 43 is operated, so as to drive the fixed shell for suppressing fixed mechanism 46 on switching stroke piece 52 Rotate, and during rotation, arc of the ball being connected with elastic component installed in fixed shell on switching stroke piece Slided in recessed slideway, when ball is moved in detent with fixed shell, ball is stuck in the detent, set casing Body stops operating, so that the positioning rocking handle 48 being connected with fixed shell also stops operating so that be connected with toggle 47 Swing change gear 51 stop movement.Swing can be made by setting one section of fixed sliding path in switching stroke piece Change gear 51 is rotated according to fixed stroke, so that the moving process of swing change gear 51 and path accurately may be used Lean on, make the handoff procedure of the paper feed drive mechanism of swing change gear 51 and first or the second paper feed drive mechanism also precisely reliable. Moreover, can also set one section of fixed arc chute in frame 29, and change gear 51 will be swung installed in the arc chute In, in handoff procedure, swinging change gear 51 can slide along the arc chute, make the moving process of swing change gear 51 It is more accurate reliable, so that handoff procedure is more accurate.

Moreover, above-mentioned fixed shell includes the middle interconnecting piece (not indicated in figure) coordinated with bearing assembly, centre connects Socket part is fixed with positioning rocking handle 48, additionally positioning rocking handle 48 can be set with middle interconnecting piece and is integrated；Also include and centre The arc receiving portion (not indicated in figure) of connecting portion connection, arc receiving portion can also set with middle interconnecting piece and be integrated, And arc receiving portion is corresponding with recessed slideway, and elastic component is arranged in arc receiving portion.Switching is arranged in fixed shell The corresponding arc receiving portion of concave slide groove on stroke piece 52, makes fixed shell more precisely may be used with being slidably connected for switching stroke piece 52 Lean on, ball is more corresponding with the cooperation of concave slide groove, and the movement for making ball is more accurate, so that the middle interconnecting piece of fixed shell Connection with positioning rocking handle 48 is rotated also more accurately and reliably.In addition, above-mentioned elastic component may be configured as spring or shell fragment.

In addition, above-mentioned paper feed gear train 38 includes the paper feed driving transition gear being connected with the first motor 31 39th, the paper feed for driving transition gear 39 to engage with paper feed drives synchromesh gear 40, and paper feed driving synchromesh gear 40 switches with swinging Gear 51 is engaged.Transition little gear and paper feed is driven to drive moreover, paper feed driving transition gear 39 also includes coaxial paper feed Gear wheel is crossed, paper feed driving synchromesh gear 40 also includes paper feed and drives synchronous pinion gear and the synchronous gear wheel of paper feed driving, first Motor 31 also includes the first motor output gear 32 being connected with motor output shaft, the first motor output gear 32 engage with paper feed driving transition gear wheel, the gear wheel engagement synchronous with paper feed driving of paper feed driving transition little gear, and paper feed Driving synchronous pinion gear is engaged with swinging change gear 51.By setting the pattern of coaxial big little gear, by tooth closer to the distance Wheel is connected, and makes the overall structure of paper feed gear train 38 more compact.In addition, the one end of the second Rocker arm 50 is cut with scissors with the first Rocker arm 49 Connect, the middle part of the second Rocker arm 50 is connected with swinging change gear 51, and the other end of the second Rocker arm 50 drives synchromesh gear 40 with paper feed (the synchronous gear wheel of paper feed driving) is fixed.In handoff procedure, paper feed driving synchromesh gear 40 is all the time with swinging change gear 51 The state of engagement is kept, it is convenient that transition gear 39 is driven by the paper feed of paper feed gear train 38 using the first motor 31 Driving paper feed driving synchromesh gear 40 is operated, so as to drive and the first paper feed drive mechanism for being connected of swing change gear 51 or the Two paper feed drive mechanisms and the printing run-in synchronism of transmission mechanism 28.

Moreover, the first paper feed pressure roller that above-mentioned first paper feed drive mechanism includes being arranged in frame 29 (is not illustrated in figure Go out), the first paper feed synchromesh gear (not illustrated in figure) for being connected with the first paper feed pressure roller, the first paper feed synchromesh gear and paper feed The correspondence of gear train 38.The second paper feed pressure roller that second paper feed drive mechanism includes being arranged in frame 29 (is not illustrated in figure Go out), the second paper feed synchromesh gear (not illustrated in figure) for being connected with the second paper feed pressure roller, the second paper feed synchromesh gear and paper feed The correspondence of gear train 38.Swing change gear 51 to engage with paper feed gear train 38, while swing change gear 51 and the One paper feed synchromesh gear or the second paper feed synchromesh gear correspondence are engaged.Swinging change gear 51 can be with the first paper feed synchromesh gear Engagement, so that paper feed gear train 38 is connected by swinging change gear 51 with the first paper feed synchromesh gear, you can pass through The first paper feed pressure roller operating that the driving of first motor 31 is connected with the first paper feed synchromesh gear, operates the first paper feed pressure roller With the printing run-in synchronism of transmission mechanism 28, realization is printed using the first paper feed drive mechanism fed printing sheet.Similarly, pass through Oscillation switching mechanism switching swings change gear 51, and swing change gear 51 can be made to be engaged with the second paper feed synchromesh gear, from And paper feed gear train 38 is connected by swinging change gear 51 with the second paper feed synchromesh gear, you can pass through the first driving Motor 31 drives the second letterweight roller operating being connected with the second paper feed synchromesh gear, the operating of the second paper feed pressure roller is driven with printing The run-in synchronism of mechanism 28, realization is printed using the second paper feed drive mechanism fed printing sheet.

In addition, above-mentioned printing transmission mechanism 28 also includes the printing synchromesh gear engaged with printing gear train 33 36 and with the printing pressure roller (not illustrated in figure) that is connected of printing synchromesh gear 36.Transmission mechanism 28 is printed to drive using first Dynamic motor 31 drives the printing synchromesh gear 36 that the first motor output gear 32 is engaged with printing gear train 33, and leads to Crossing printing synchromesh gear 36 drives printing pressure roller to rotate, it is possible to achieve printing pressure roller and the first paper feed pressure roller or the second paper feed pressure roller Run-in synchronism, utilize the first paper feed pressure roller or the second paper feed pressure roller to carry out fed printing sheet so as to realize well.This Outside, printing gear train 33 may also include the first printing driving transition gear engaged with the first motor output gear 32 34, the second printing driving transition gear 35 engaged with the first printing driving transition gear 34.Further, the first motor The first printing that output gear 32 also includes engage with the first motor output gear 32 drives transition gear wheel, and with the The first coaxial printing driving transition little gear of one printing driving transition gear wheel.And the second printing driving transition gear 35 is also wrapped The the second printing driving transition gear wheel engaged with the first printing driving transition little gear is included, and driving transition is printed with second The second coaxial printing driving transition little gear of gear wheel, the second printing driving transition little gear is nibbled with printing synchromesh gear 36 Close.So, the compact conformation of printing gear train 33 can be made, reduce space-consuming.

In addition, printer transmission switching device also includes being covered on printing transmission mechanism 28, paper feed transmission mechanism 37 and walked The gear train cover plate 30 in the outside of paper switching mechanism 41.By setting the structure of gear train cover plate 30, can to printing transmission mechanism 28, Paper feed transmission mechanism 37 and paper feed switching mechanism 41 are protected, while can also limit the gear structure in each mechanism Position, prevents each gear structure connection from loosening or departing from and influence the transmission effect of gear.

In addition, as shown in figure 13.The present invention also provides a kind of switching corresponding with above-mentioned printer transmission switching device and controlled Method processed, comprises the following steps：

S100, the first paper feed drive mechanism of the oscillation switching mechanism of paper feed switching mechanism and paper feed transmission mechanism 37 and walk Paper gear train 38 keeps connection, and paper feed gear train 38 keeps being connected with printing transmission mechanism 28；

S200, controller send paper feeding instruction to the first paper feed drive mechanism of paper feed transmission mechanism 37, and the first paper feed drives Motivation structure receives the backward printing fed printing sheet of transmission mechanism 28 of paper feeding instruction；

The oscillation switching mechanism of S300, controller to paper feed switching mechanism 41 sends switching paper feeding instruction, with the first paper feed The oscillation switching mechanism of drive mechanism connection receives switching command, disconnect the connection with the first paper feed drive mechanism and be switched to The second paper feed drive mechanism connection of paper feed transmission mechanism, the second paper feed drive mechanism receives paper feeding and instructed to printing transmission mechanism 28 fed printing sheets.

Further, also comprise the following steps in above-mentioned steps S300：

The oscillation switching mechanism of S310, controller to paper feed switching mechanism 41 sends switching paper feeding instruction, is driven with printing Motor (i.e. the first motor) reversion of the paper feed drive mechanism connection of mechanism 28 and first, the first paper feed drive mechanism is entered Row moves back paper action, and printing paper is exited into print zone；

Further, step S310 also comprises the following steps：

S311, controller to oscillation switching mechanism send switching paper feeding order when, the first paper feed drive mechanism carry out move back paper, The first sensing setting element group corresponding with the first paper feed drive mechanism is started working simultaneously；

S312, the first sensing setting element group sense that printing paper is returned to the first paper feed and led to by the first paper feed drive mechanism When the paper feed in road prepares region, the first sensing setting element group prompts for paper feed SBR, and controller control swings switching machine The motor of structure switches over rotation, and motor prepares driving and swings change gear progress swing switching.

S43, the printing paper of the first paper feed passage, which exit print zone and rest on paper feed, to be prepared behind region, oscillation switching mechanism Motor (i.e. the second motor) driving toggle 47 rotate, toggle 47 drive swing teeth change Wheel 51 is swung, and swings change gear 51 and occurs to swing and depart from connection with the first paper feed drive mechanism, continue to swing realize with Second paper feed drive mechanism is connected, and the second paper feed drive mechanism and printing transmission mechanism 28 coordinate to print zone paper feeding.

Moreover, also comprising the following steps in above-mentioned steps S320：

The positioning rocking bar 48 of motor driving toggle 47 turns an angle and distance, drives and connects with crank The swing change gear 51 that linkage 47 is connected turns over corresponding angle and distance, this angle and distance and the first paper feed driving machine Angle and distance correspondence between structure and the second paper feed drive mechanism.

Further, also comprise the following steps in above-mentioned steps S320：

S321, receive the switching command that controller is sent, motor driving with position that rocking bar 48 is connected suppress fixation Structure 46 is rotated, and the ball for suppressing fixed structure 46 is skidded off from a detent on switching stroke piece 52, solid with suppressing The toggle 47 for determining the connection of structure 46 drives swing change gear 51 to depart from the connection with the first paper feed drive mechanism；

S322, suppress the ball of fixed structure 46 and be rolled to another positioning along the arc chute on switching stroke piece 52 In groove, the toggle 47 being connected with suppressing fixed structure 46, which drives, swings the paper feed driving machine of change gear 51 and second Structure is connected, and is suppressed the stopping of fixed structure 46 slip and is fixed positioning rocking bar 48, toggle 47 stops operating and kept Change gear 51 is swung to be fixedly connected with the second paper feed drive mechanism.

Further, subsequently it may also include the steps of in above-mentioned steps S300：

S400, controller send paper feeding instruction, the driving of the second paper feed to the second paper feed drive mechanism of paper feed transmission mechanism Mechanism is received after paper feeding instruction, and the printing paper that the paper feed in the second paper feed passage is prepared into region is defeated to printing transmission mechanism Send；

The oscillation switching mechanism of S500, controller to paper feed switching mechanism sends switching paper feeding instruction, is driven with the second paper feed The oscillation switching mechanism of motivation structure connection receives switching command, disconnects the connection with the second paper feed drive mechanism and is switched to and walks The first paper feed drive mechanism connection of paper transmission mechanism, the first paper feed drive mechanism is acted after receiving paper feeding instruction, directly will be with Before return to the first paper feed passage paper feed prepare region printing paper to printing transmission mechanism conveying.

Further, also comprise the following steps in above-mentioned steps S500：

S510, controller to oscillation switching mechanism send switching paper feeding order when, the second paper feed drive mechanism carry out move back paper, The second sensing setting element group corresponding with the second paper feed drive mechanism is started working simultaneously；

S520, the second sensing setting element group sense that printing paper is returned to the second paper feed and led to by the second paper feed drive mechanism When the paper feed in road prepares region, the second sensing setting element group prompts for paper feed SBR, and controller control swings switching machine The motor of structure switches over rotation, and motor prepares driving and swings change gear progress swing switching, swings teeth change Wheel disconnects the connection with the second paper feed drive mechanism and is switched to be connected with the first paper feed drive mechanism.

Printer transmission switching device and method for handover control that the present invention is provided, when printer works, are driven by first The paper feed motor of dynamic motor formation, paper feed gear train and corresponding paper feed pressure roller formation paper feed transmission mechanism, and by The printing motor of first motor formation, printing gear train and printing pressure roller formation printing transmission mechanism, paper feed Transmission mechanism is separate and the synchronization that interdepends for transmission mechanism and printing, controls simple and clear, and paper feed movement is relatively reliable；And And, paper feed transmission mechanism and printing transmission mechanism are provided separately so that printing transmission mechanism paper feed in print procedure it is stable and Perform reliably, while making paper feed transmission mechanism realize multichannel, so as to realize many spool paper feeds and wherein some volume may be selected Axle paper feed, you can realize the conveying of many paper rolls in printer, and by set paper feed switching mechanism can realize each paper roll it Between automatic switchover, meet different paper rolls conveying printings and require；In addition, by setting switching stroke in paper feed switching mechanism Piece, fixed structure is suppressed, realize and fix when suppressing fixed structure ball and being rocked to the detent of switching stroke piece, it is ensured that cut Change to position and switching is accurate, you can make printing paper handoff procedure precisely reliable, it is not easy to switch not in place or switch excessive And cause handoff failure situation and meanwhile ensure switching after mechanism it is stable, positioning rocking handle will not by swing change gear and Chart drive motor (the second motor) influences and produces skew.Moreover, during paper feed switching is carried out, the paper feed being switched The printing paper of drive mechanism conveying automatically falls back on paper feed and prepares region, but not fully exits paper feed drive mechanism, so exists When next time needs paper feed, directly the printing paper for preparing region positioned at paper feed can be transported at printing transmission mechanism and be printed, It is convenient and simple and improve operating efficiency without manually printing paper is encased in paper feed drive mechanism.

As shown in Figure 14 to Figure 15, the printer with multiple paper feed passages that printer includes being arranged in frame 29 is led Paper structure, paper structure is led by what is set in printer, can conveniently realize multi-channel paper guidance, and by derived printing paper It is transported at exit slot and is printed, multi-channel paper guidance is realized convenient and simplely, multiple paper rolls can be set in printer simultaneously 53, and independent conveying is carried out to the printing paper of multiple paper rolls 53, and arbitrarily switching conveying, nothing can be carried out to any paper roll 53 Printing paper need to be frequently changed, operating efficiency is improved, it is ensured that printer steady operation is so as to ensure that print quality.

As shown in Figure 16 to Figure 17, above-mentioned printer leads paper structure, and panel layer 290 includes top panel, is arranged at top panel Printhead (not illustrated in figure).Intermediate layer 19 includes intermediate plate, is arranged at the first paper advance mechanism 54 of intermediate plate.And open Printing pressure roller groove on intermediate plate, is installed at printing pressure roller groove and printing pressure roller 27 corresponding with printhead.Support 22 Including body plate, the second paper advance mechanism 61 on body plate, the second paper advance mechanism 61 and the printing corresponding matching of pressure roller 27 are arranged at. It is also possible to provide the 3rd paper advance mechanism, or even more paper advance mechanisms, formation basic theory is walked with the first paper advance mechanism 54 and second The principle of mechanism of paper 61 is identical.

The first paper feed passage can be formed between panel layer 290 and intermediate layer 19, can be formed between intermediate layer 19 and support 22 Second paper feed passage, and the first paper advance mechanism 54 is provided with the first paper feed passage, is provided with the second paper feed passage Two paper advance mechanisms 61.By two paper advance mechanisms set in two paper feed passages, in addition combined with the intermediate plate 19 in intermediate layer The printing pressure roller 27 of setting can respectively carry out leading paper conveying to the printing paper on two paper rolls 53, and using with being set on intermediate layer 19 The printhead set on the corresponding panel layer 22 of printing pressure roller 27 put, is printed to being guided over the printing paper come.Also, two Individual paper feed carries out printing paper traction and printing by sharing a printing pressure roller 27, convenient and simple, it is only necessary to a printing pressure roller 27 and printhead can be achieved with printing different printing papers.By leading paper structure with many paper advance mechanisms of multichannel, Many printing papers can be carried out leading paper printing, and can select to use wherein any one printing paper progress to lead paper with printing, nothing simultaneously Printing paper need to be frequently changed, it is simple to operate.

Further, above-mentioned first paper advance mechanism 54 includes being arranged at the first paper feed pressure roller on intermediate plate, and with the First actuator 57 of one paper feed pressure roller connection.First actuator 57 drives the first paper feed pressure roller to rotate, and can draw and be arranged in the Printing paper movement on one paper feed pressure roller.Moreover, the first paper feed pressure roller includes being arranged on intermediate plate connecting with the first actuator 57 The the first paper feed drive roll 55 connect, and the first paper feed driven voller 56 coordinated with the first paper feed drive roll 55.First paper feed from Dynamic roller 56 is settable on the intermediate layer, can also be arranged on panel layer.First actuator 57 drives the first paper feed drive roll 55 Rotate, printing paper is located between the first paper feed drive roll 55 and the first paper feed driven voller 56, and the first paper feed driven voller 56 will beat Printing paper is compressed, during the first paper feed drive roll 55 is rotated, and is rolled by the occlusion of two rollers, with regard to that can will be clamped in first Printing paper between the paper feed driven voller 56 of paper feed drive roll 55 and first leads paper effect with moving to realize.

Moreover, above-mentioned second paper advance mechanism 61 includes the second paper feed pressure roller being arranged on body plate, and walked with second The second actuator (not illustrated in figure) of letterweight roller connection.Similarly, the second actuator drives the second paper feed pressure roller to rotate, and can lead Draw the printing paper movement being arranged on the second paper feed pressure roller.Also, the second paper feed pressure roller includes being arranged on body plate and second Second paper feed drive roll 62 of actuator connection, and the second paper feed driven voller 63 coordinated with the second paper feed drive roll 62.The Two paper feed driven vollers 63 may be provided on intermediate layer 19, can also be arranged on support 22.Second actuator and the second paper feed master The action principle of dynamic roller 62 is identical with above-mentioned first actuator and the first paper feed drive roll.

Moreover, above-mentioned first paper feed drive roll 55, the first paper feed driven voller 56, the second paper feed drive roll 62, the second paper feed The multistage rubber roll body that driven voller 63 includes roller core (not indicated in figure) and is set around on roller core (is not indicated in figure Go out).Each drive roll and driven voller can be so respectively provided with into segmentation nick shaped, it is possible to increase the friction between printing paper and roll body Power, it is to avoid printing paper skids, it is easier to be guided over paper.In addition, drive roll and driven voller are disposed as roller core plus rubber roll body Structure, roller core is generally metal material, can keep the rigidity of roll body, and rubber has good elasticity, makes rubber roll body direct Contacted with printing paper, printing paper can be clamped and printing paper will not be caused to damage.Further, the first paper feed drive roll 55 Including the first home roll core, and multistage the first primary elastomeric roll body being set around on the first home roll core.First paper feed driven voller 56 Including the first driven roller core, and the driven rubber roll body of multistage first being set around on the first driven roller core, every section of first main rubber Rubber roll body is corresponding with every section of first driven rubber roll body.Second paper feed drive roll 62 includes the second home roll core, and is set around the Multistage the second primary elastomeric roll body on two home roll cores.Second paper feed driven voller 63 also includes the second driven roller core, and is set around The driven rubber roll body of multistage second on second driven roller core, every section of second primary elastomeric roll body and every section of second driven rubber roll body Correspondence.Make the barbed portion correspondence barbed portion of rubber roll body, roll body part respective roller body portion fully can will print folder Handle, fully to increase the frictional force between printing paper and roll body.

In addition, setting the arc ramp 59 gradually risen at oriented printing pressure roller 27 on body plate, the end of ramp 59 is set There is arc to print pressure roller mating groove 60, printing pressure roller 27 part is located in printing pressure roller mating groove 60.By being set on body plate Put arc ramp 59, it is ensured that printing paper can up go to intermediate plate along ramp 59 and set at the position of printing pressure roller 27, side Just traction is carried out to the printing paper in the second paper feed passage and leads paper.Further, the end of ramp 59 is provided with ramp most flash, slope Platform most flash is located in printing pressure roller groove.So the second paper feed can be passed through beating that the second paper advance mechanism 61 conveying of middle process comes Printing paper is successfully transported at printing pressure roller 27, leads paper smooth reliable.

In addition, the two ends of the first paper feed driven voller 56 and the second paper feed driven voller 63 are arranged with circular ball bearing (not illustrated in figure), intermediate plate and body plate both sides are provided with the circular arc bearing groove for installing ball bearing.By Driven voller two ends set ball bearing, and it can be made to be freely rotatable under the drive of drive roll.

In addition, the first paper feed drive roll 55 at intermediate plate link position with being provided with the first sliver (not illustrated in figure), Second paper feed drive roll 62 at body plate link position with being provided with the second sliver (not illustrated in figure).By roll body with Between plate or body plate junction set sliver, the gap shielding between roll body and intermediate plate or body plate is lived, it is to avoid printing Paper, which is absorbed in crack, causes paperboard.

In addition, the first actuator 57 is set to the first paper feed synchromesh gear, the second actuator is the second paper feed synchromesh gear. Drive the first paper feed pressure roller to rotate by the first paper feed synchromesh gear, drive second to walk letterweight by the second paper feed synchromesh gear Roller is rotated, each independent to be driven, and makes each paper feed passage paper feed independently convenient.In addition, also adding gear train shape using motor Into driving structure drive the first actuator and the second actuator to move.

Frame 29 or stamp pad 29 are provided with stopping means 75.The stopping means 75 includes two locating parts, such as Figure 18,19 Shown, two locating parts 67 are located at the outlet both sides of print zone 12 respectively, from the import of paper feed passage to the outlet of print zone 12 Direction be page orientation, page orientation is as shown in arrow in Fig. 3 or Fig. 6.The outlet both sides of print zone 12 are respectively provided with a limit Position part 67, printing paper 66 is then sent out by page orientation feeding print zone printing (i.e. " paper feed ") between two locating parts 67, When needing when reversely exiting print zone 12 (carry out " moving back paper "), to make printing paper 66 to the force of printing paper 66 by page orientation The counter motion of printing paper 66, now two locating parts 67 position-limiting action is played to printing paper 66.Due on paper direction is moved back, printing The stress point of paper 66 is located at the rear of stress point in preceding, locating part 67, and printing paper 66 is stretched smooth, it is to avoid paperboard, after influence Continuous printing.

Transport roller is additionally provided with frame and paper drive mechanism is moved back, paper drive mechanism is moved back and is docked with transport roller, paper feed passage warp The surface of transport roller is crossed, moving back paper drive mechanism is used to drive transport roller to make counter motion of the printing paper 66 to page orientation.It is preferred that , paper drive mechanism is moved back for dual direction drive mechanism, and the dual direction drive mechanism can drive printing paper 66 to enter by page orientation forward direction Paper reversely moves back paper.

As shown in Figure 20 to 22, on page orientation, the first end of locating part 67 is located at the upper of the second end of locating part 67 Move back paper guide part 69 provided with paper guide part 69 is moved back and be oriented to towards the side of paper feed passage to move back paper in trip, the second end of locating part 67 Face, moves back paper spigot surface and is obliquely installed relative to page orientation, and moving back on two locating parts 67 constitutes horn mouth between paper spigot surface, And bell-mouthed width gradually increases along page orientation.When moving back paper, move back paper spigot surface plays the role of guiding to printing paper 66, Prevent the deflection of printing paper 66, it is to avoid paperboard.The first end of locating part 67 is provided with paper feed guide part 70, and paper feed guide part 70 is towards walking The side of paper passage is paper feed spigot surface, and paper feed spigot surface is obliquely installed relative to page orientation, entering on two locating parts 67 Horn mouth is constituted between paper spigot surface, and bell-mouthed width is gradually reduced along page orientation.When paper feed, paper feed spigot surface There is guiding to printing paper 66, prevent the deflection of printing paper 66, it is to avoid paperboard.

Printhead 14 is located at the top of stamp pad 64, and locating part 67 is installed on the upper surface of stamp pad 64, locating part 67 Top has spacing pressing plate 68, and spacing pressing plate 68 stretches into the top of paper feed passage.Spacing pressing plate 68 prevents printing paper 66 from tilting, and makes Printing paper 66 moves smooth.On page orientation, the first end of spacing pressing plate 68 is located at the upstream at the second end of spacing pressing plate 68, Second end of spacing pressing plate 68 is baroclined portion 71 provided with moving back paper, is moved back the barocline bottom in portion 71 of paper and is baroclined face to move back paper, is moved back paper and is baroclined face It is obliquely installed relative to page orientation, moves back paper and barocline horn mouth is constituted between face and stamp pad 64, and bell-mouthed height edge Page orientation gradually increases.When moving back paper, moving back paper and baroclining in face of printing paper 66 plays the role of guiding, prevents the deflection of printing paper 66, Avoid paperboard.The first end of spacing pressure is baroclined portion 72 provided with paper feed, and the barocline bottom in portion 72 of paper feed is baroclined face for paper feed, and paper feed is oblique Pressure surface is obliquely installed relative to page orientation, and paper feed, which baroclines, constitutes horn mouth between face and stamp pad 64, and bell-mouthed height Degree is gradually reduced along page orientation.When paper feed, paper feed, which baroclines in face of printing paper 66, guiding, prevents that printing paper 66 is inclined Tiltedly, it is to avoid paperboard.

As shown in figure 3, being additionally provided with dancing roll 65 in frame, dancing roll 65 is located at the import of paper feed passage；Dancing roll 65 is low In paper feed passage, the upper surface that printing paper 66 bypasses dancing roll 65 is stretched into paper feed passage；Or, dancing roll 65 is logical higher than paper feed Road, the lower surface that printing paper 66 bypasses dancing roll 65 is stretched into paper feed passage.When the installation site of printing paper 66 is higher or lower than to walk During paper channel entrance, printing paper 66 is tilted into paper feed passage, can occur strong friction, stress with support 22 or panel layer 13 It is uneven easily crooked, in the present embodiment, by the guiding of dancing roll 65, make printing paper 66 concordant with the holding of paper feed passage, make Printing paper 66 operates steadily, it is to avoid paperboard.

The bottom surface of panel layer, the top surface in intermediate layer, among the top surface of the bottom surface in intermediate layer and support, at least one of which face Provided with least two side by side lead paper fin, cause the length direction of fin and the page orientation of the corresponding paper feed passage Match.Lead that paper fin includes being arranged on stamp pad 64 first lead paper fin 73, be arranged at panel layer 13 lower section the Two paper fin led, be arranged at the additional of intermediate layer and lead paper fin.Stamp pad 64 provided with least two side by side first to lead paper convex Rib 73, the first length direction for leading paper fin 73 is matched with page orientation.The lower section of panel layer 13 provided with least two side by side Second leads paper fin, and the second length direction for leading paper fin is matched with page orientation.Printing paper 66 is in panel layer 13 and stamp pad Pass through between 64, printing paper 66 leads paper fin 73 with first, second leads paper fin and contact, and contact area is small, and resistance is small, Ke Yishi Printing paper 66 smoothly passes through.First height for leading the two ends of paper fin 73 is less than the height in the middle part of it, and second leads paper fin two ends Height be less than height in the middle part of it, play a part of transition when printing paper 66 is moved forward and backward, it is more suitable to be that printing paper 66 is run Freely.It is preferred that, first lead paper fin 73, second lead paper fin length direction it is parallel with page orientation, two neighboring first leads Between paper fin 73, two neighboring second lead to constitute between paper fin and coordinate air slot with page orientation, it is to avoid printing paper 66 is transported Air pressure is uneven during dynamic, produce cyclone leads the distortion of paper printing paper, crooked.It is additional to lead paper fin and lead paper fin with first respectively 73rd, second paper fin position correspondence is led.

As shown in Figure 23 to Figure 27, two locating parts for exporting both sides located at print zone are respectively symmetrically arranged first limit The position locating part 67 of part 67 and second, the first rack 76 being connected with the first locating part 67, the second tooth being connected with the second locating part Bar, and the travelling gear 77 engaged simultaneously with the first rack 76 and the second rack.Further, above-mentioned first rack 76 and Two racks are set in parallel in the both sides of travelling gear 77, and the first rack 76 is symmetrical arranged with the second rack.Make the He of the first rack 76 Second rack keep identical length and apart from and be arranged close to, make compact overall structure be easy to set on a printer, and Regulation is reliable convenient.Moreover, the stopping means 75 also includes the nut spiral shell being connected on the first locating part 67 or the second locating part Linkage.

In addition, offering stopper slot 74 on stamp pad 64, the first locating part 67 and the second locating part slide and are arranged in limit The top of position groove 67, and the first rack 76, the second rack and nut-screw mechanism are respectively positioned on below stopper slot, and nut-screw mechanism One end stretches out in stamp pad 64.The first locating part 67 and the second locating part is located at the top of stamp pad 64, be easy to stamp pad 64 On printing paper 66 carry out it is spacing.And the first rack 76, the second rack and nut-screw mechanism be may be contained within into stamp pad 64 The lower section of stopper slot 74, is easy to be hidden these structures setting, it is to avoid the other structures of interference printer.Moreover, making nut Screw mechanism one end stretches out in the outside of stamp pad 64, is easy to that stopping means 75 is adjusted on the outside of printer, simple and convenient.

Above-mentioned stopping means 75, by adjusting nut screw mechanism, can drive be connected with nut-screw mechanism One locating part 67 (or second locating part) moves linearly, so as to drive the first rack 76 (or the being connected with the first locating part 67 Second rack of two locating parts connection) move linearly together, the driving cog now engaged with the first rack 76 (or second rack) Wheel 77 rotates, and can drive the second rack (or first rack) rectilinear movement while being engaged with travelling gear 77.Due to One rack 76 and the second rack are engaged with travelling gear 77 simultaneously, can enable the first rack 76 and the second rack while mobile phase Same distance, you can the first locating part 67 and the second locating part that are connected respectively with the first rack 76 and the second rack are moved Dynamic identical distance.The distance between the first locating part 67 and second locating part can be so conveniently adjusted, easily will not Printing paper with size is spacing firmly.It is additionally, since the first locating part 67 and the second locating part is symmetrical arranged, and the two can be to Center or outside movement identical distance, can make printing paper 66 be always positioned at middle position.In addition, utilizing nut-screw machine Structure and gear ＆ rack structure are adjusted, and degree of regulation is high and reliable.

In addition, above-mentioned nut-screw mechanism includes the nut 78 being connected on the first locating part 67 or the second locating part, with And it is arranged in the screw rod 79 on nut 78, the rack 76 of screw rod 79 and first or the second rack keeping parallelism.By rotating screw rod 79, The first locating part 67 that can make to be connected with nut 78 or the second locating part are moved linearly, and drive the first rack 76 or the second tooth Bar moves linearly along the setting direction of screw rod 79.Moreover, the end of screw rod 79 is provided with knob 80., can be straight by setting knob 80 The rotation that turn knob 80 carrys out adjusting bolt 79 was connected, it is laborsaving convenient and simple.Furthermore it is possible to can by screw rod 79 using bearing block Rotationally fix.

When printer has multiple paper feed passages, i.e., with multiple spacing dresses on multiple stamp pads 64, can be correspondingly arranged Put 75.

Not limited to this, can also be provided with two locating parts 67, two locating parts 67 are located at respectively in the import of paper feed passage The both sides of the import of paper feed passage.Finite place piece 67, limitation of the printing paper 66 in locating part 67 are all provided with the two ends of paper feed passage Lower motion, the two ends of printing paper 66 are restrained, printing paper 66 is kept smooth in paper feed passage, prevent paperboard.And two Paper feed guide rod is set between individual spacing 67, and paper feed guide rod 81 is located at the lower section of spacing pressing plate, and paper feed guide rod 81 can be by under paper Pressure, spacing pressing plate 68 can be further to paper progress spacing, can prevent from turning over and clogging paper feed port on paper in paper feed.

As shown in Figure 28-31, printer also includes at least one spool 85 that activity is connected in frame 29.Frame 29 is wrapped Symmetrically arranged two side plates 82 are included, each inner side of side plate 82 is provided with least one side plate Access Division, and two side plates 82 On side plate Access Division be in correspondence.Spool includes axis body, and axis body two ends are provided with spool Access Division, and two spool clampings Portion respectively with the side plate Access Division activity clamping on two side plates 82, spool be provided with coil paper installation position.

It is convenient that first coil paper or other coiled strip sets are set on axis body 85 by the way that axis body 85 and frame 29 are provided separately, then On the side plate 82 that axis body 85 is installed to the both sides of frame 29, coil paper or coiled strip can be installed on axis body 85 convenient and simplely.And And, by setting side plate Access Division on side plate 82, and in the end of axis body 85, axis body Access Division is set, can be easily by axis body 85 snap fit onto between two side plates 82, easily can also lift down axis body 85 from side plate 82, easy to use and reliable.It can set An axis body 85 is put, and the Access Division of a pair and the axis body 85 cooperation is set on two side plates 82, an axis body 85 is blocked Catch；May also set up two or more axis bodies 85, and be correspondingly arranged on two side plates 82 two pairs or multipair Access Division, by this two The equal clamping of individual or multiple axis bodies 85 is lived.

Moreover, above-mentioned side plate Access Division includes the side plate guide groove 83 for the protrusion frame formation being arranged on side plate 82, side plate Side plate projection 84 or depressed side board are provided with guide groove 83, and side plate guide groove 83 is provided with guide groove opening.Axis body is set on Access Division It is equipped with axis body depression 86 or axis body is raised, axis body depression 86 and the raised 84 corresponding clampings of side plate or axis body projection and depressed side board pair Answer clamping., can be in order to which axis body 85 be slided into the inside of side plate 82 from side plate guide groove 83 by setting side plate guide groove 83, and utilize side Axis body depression 86 or axis body male cooperation that side plate projection 84 or depressed side board in plate guide groove 83 are set with axis body end, by axle Body 85 is stuck on side plate and is fixed.

Further, side plate guide groove 83 includes the guide groove upper side frame section be arrangeding in parallel and guide groove lower frame section, and connection The guide groove arc frame section of guide groove upper side frame section and guide groove lower frame section, guide groove arc frame section is relative with guide groove opening, and guide groove arc Shape frame section coordinates with axis body end clamping.Width size and the directly corresponding side plate guide groove 83 of axis body 85 are set, are easy to make axis body 85 are easy to slip into side plate guide groove 83 along between guide groove upper side frame section and guide groove lower frame section.And by setting and 85 pairs of axis body The guide groove arc frame section that should coordinate, is easy to the axis body 85 that will slide into position and fixes.

Moreover, side plate projection 84 or depressed side board may be disposed at guide groove arc frame section center position, and axis body depression 86 Or axis body projection is also correspondingly arranged in axis body end center point position.So it is easy to axis body 85 being fixed in side plate guide groove 83 At the heart, fixing-stable is reliable.In addition, inner distance and axis body external diameter size between guide groove upper side frame section and guide groove lower frame section It is identical.So make axis body 85 and the snap-fit of side plate guide groove 83, it is to avoid when axis body 85 is slipped into side plate 83 inside of guide groove, axis body 85 and side plate guide groove 83 combination pine excessively and cause axis body 85 to depart from side plate guide groove 83.

In addition, side plate projection 84 or the size of depressed side board are identical with axis body depression 86 or the raised size of axis body.So Make the fixation of axis body 85 and side plate guide groove 83 more reliable and more stable, will not be because the two combines Tai Song and depart from, also will not be because of The two does not match and can not combined.Further, side plate projection 84 or depressed side board are provided in round, axis body depression 86 or axis body Projection is also correspondingly arranged as circle.Easy to process when being provided in round, clamping is also very convenient.In addition, side plate projection 84 or side plate Depression may also be configured to square bar, and axis body depression 86 or axis body projection can be also correspondingly arranged as square bar, and square bar length is not Less than axis body diameter., can be tight by the two clamping during axis body 85 is slipped into side plate guide groove 83 when square bar is set, That is the square bar axis body depression 86 or axis body projection of axis body 85 are snapped onto in the side plate projection 84 or depressed side board of square bar.

The axis structure that the present invention is provided, axis body 85 can be conveniently mounted to take off in frame 29 or from frame, Facilitate human hand to operate, and conveniently load coil paper or other coiled strips from any direction；Moreover, passing through the He of side plate 82 in frame 29 Access Division is set on axis body 85, axis body can be securely fixed on side plate 82, it is to avoid axis body 85, which is rocked, to wave.

As shown in Figure 32 to 34, spool also includes two positioning elements and two elastic components 103, and positioning element is slidably pacified Loaded on axis body 85, elastic component 103 corresponds cooperation with positioning element, and one end of elastic component 103 is installed on corresponding positioning On part, and the other end is installed on axis body 85；When positioning element is moved to predeterminated position, structure between two positioning elements Into reel installation position, the elastic force of elastic component 103 makes two positioning elements mutually gather.Wherein, positioning element includes the He of sliding block 97 Clamp 93, sliding block 97 is slidably mounted on axis body 85, and sliding block 97 is provided with convex 100, and convex 100 is relative to axis body 85 Lateral projections, clamp 93 is provided with first through hole, and clamp 93 is set in outside axis body 85 by first through hole thereon, two cards Plate 93 is located between two convexes 100, and reel installation position is constituted between two clamps 93.The predeterminated position of positioning element makes peace Loaded on the printing paper and print head alignment on reel installation position.When positioning element is moved to predeterminated position, because clamp 93 exists Position on axis body 85 is only by the constraint of elastic component 103, under the elastic force effect of two elastic components 103, two phases of clamp 93 Mutually gather, make two clamps 93 that printing paper is limited on default position, the default position and print head alignment, Neng Goubao Demonstrate,prove print procedure in printing paper all the time with print head alignment, it is ensured that printing effect.

At least one of convex 100 among two sides on the axial direction of axis body 85 is provided with transitional slope sideways.It is preferred that , two sides of convex 100 are equipped with transitional slope, facilitate the installation and dismounting of clamp 93.

As shown in figure 34, sliding block 97 includes the elastic arm 99 of connection end 98 and at least two, one end and the connection end 98 of elastic arm 99 Connect and at least two elastic arms 99 are positioned at the same side of connection end 98, the outside of elastic arm 99 is provided with convex 100.Two bullets Convex 100 on arm 99 is opposite to when clamp 93 is installed on axis body 85, clamp 93 is simultaneously by two on same sliding block 97 Individual convex 100 is blocked, and the stress equalization of clamp 93, is difficult crooked, is further ensured that print quality.

Convex 100 on elastic arm 99 is at least two staggered on the axial direction of axis body 85.Pass through the positioning of axially distribution Convex 100, the position on axis body 85 of clamp 93 can be adjusted, clamp 93 and convex 100 can be selected according to the width of printing paper Cooperation position, expand spool to the applicability of different in width printing paper.Sliding block 97 also includes reinforcement 101, reinforcement 101 Between two elastic arms 99, one end of reinforcement 101 is installed on one of elastic arm 99 and the other end is installed on another On elastic arm 99.Reinforcement 101 can strengthen the intensity and elastic force between 97 two elastic arms 99 of sliding block, make the elastic force of elastic arm 99 can be with Clamping clamp 93, and service life can be improved.

In the present embodiment, sliding block 97 is two, including the first sliding block 97 and the second sliding block 97；Elastic component 103 is two, Including the first elastic component 103 and the second elastic component 103；The first sliding block 97 is sequentially installed with from the first end of axis body 85 to the second end Approached in opposite directions with the connection end 98 of the second sliding block 97, and the sliding block 97 of connection end 98 and second of the first sliding block 97, the first elasticity One end of part 103 is installed on the connection end 98 of the first sliding block 97 and the other end is installed on the second end of rotating shaft, the second elastic component 103 one end is installed on the connection end 98 of the second sliding block 97 and the other end is installed on the first end of rotating shaft.

Axis body 85 is provided with limit convex 91, and limit convex 91 is located at the company of the sliding block 97 of connection end 98 and second of the first sliding block 97 Connect and hold between 98.First sliding block 97 and the separation of the second sliding block 97 can be made the two non-interference by limit convex 91.

Axocoel is provided with axis body 85, sliding block 97 is installed in axocoel, axis body 85 is provided with fluting 90, and convex 100 is from opening Stretched out in groove 90.Sliding block 97 is provided with sliding convex 102, and chute 92 of the inwall provided with axial direction of axocoel slides convex 102 and be installed on In chute 92；Slide convex 102 and the cooperation of chute 92 make the slip of sliding block 97 smooth, it is ensured that printing paper all the time with printhead pair It is accurate.

As illustrated in figs. 32-34, axis body 85 includes the first semiaxis 110 and the second semiaxis, and the first semiaxis 110 and the second semiaxis are closed Surround axocoel, sliding block 97 is mounted on the inwall of the first semiaxis 110, fluting 90 be located at the first semiaxis 110 and the second semiaxis it Between.Take apart after the first semiaxis 110 and the second semiaxis, sliding block 97, elastic component 103 are mounted on the first semiaxis 110, and each part is still Original installment state is kept, will not scatter and, it is easy to safeguard.First semiaxis 110 and the second semiaxis pass through screw connection, reinforcement 101 middle part constitutes to the depression bending of connection end 98 and makes a concession recessed.Make a concession the recessed sky that can be avoided screw, reduce the occupancy of sliding block 97 Between, make compact conformation.

As shown in figure 34, clamp 93 dorsad reel installation position side be provided with first boss 94, because clamp 93 is relatively thin, card Plate 93 one " line " similar with the contact surface of axis body 85 itself, the contact portion of clamp 93 and axis body 85 is made by first boss 94 Expanding turns into contact " face ", makes stabilized structure.First boss 94 is provided with the second through hole, and first through hole is connected with the second through hole, Axis body 85 passes through the second through hole, and the inwall of the second through hole lacks 95 provided with spacing.When clamp 93 is installed on axis body 85, positioning Convex 100 insertion is spacing to be lacked in 95, it is to avoid clamp 93 is rotated around axis body 85, makes structure more firm.Spacing scarce 95 pass through in the present embodiment The side wall of logical first boss 94, but not limited to this, can also be without as long as the inwall of the second through hole lacks 95 provided with spacing Insertion.

The present embodiment is not limited to, Ke Yishi, spool includes more than two positioning elements and elastic component 103, elastic component 103 Correspond and coordinate with positioning element, two positioning elements and two elastic components 103 are one group, one printing paper of every group of installation, Each group is axially arranged on axis body 85, and multiple printing papers can be installed on an axis body 85.

Not limited to this or as shown in figure 35, clamp 93 towards reel installation position side be provided with second boss 96, Second boss 96 is provided with third through-hole, and first through hole is connected with third through-hole, and axis body 85 passes through third through-hole.Due to second convex The thickness of itself of platform 96, makes to constitute two kinds of reel installation positions, i.e., reel installation position α (printing papers as depicted between clamp 93 Be set on axis body 85), reel installation position β (printing paper is set in second boss 96), wherein α radius be less than β radius, A kind of axis body 85 can arrange a variety of clamps 93, when the through hole radius at printing paper center is inconsistent, can select corresponding card Plate 93 is installed on axis body 85, the radius of reel installation position is matched with the radius of printing paper central through hole, ensures that printing paper turns It is dynamic steady, all the time with print head alignment.It is preferred that, the outer surface of second boss 96 can also be set to cone, to be applicable difference The printing paper of specification；It is also possible that provided with multiple boss be connected, decreasing radius, being applicable a variety of printing papers.

Formed in frame 29 between two side plates 82 in paper roll cabin, frame and be additionally provided with transparent cover, transparent cover is covered on At the opening in paper roll cabin, by transparent cover it is observed that the use state of printing paper, the also non-paper roll of transparent cover provides anti- The protection of dirt waterproof.First paper feed passage 10, the import of the second paper feed passage 11 are connected with paper roll cabin, and transparent cover is simultaneously by the One paper feed passage 10, the import of the second paper feed passage 11 are covered, dustproof and waterproof, and avoid printing paper from receiving external interference, are protected What card was printed is smoothed out.

Be additionally provided with inductive antenna circuit plate (RFID) and corresponding fixing axle in frame 29, inductive antenna circuit plate with Governor circuit is electrically connected with, (label paper for being for example rolled into drum), inductive antenna circuit when printing paper carries RF tag Plate can read and write the RF tag on printing paper.

Each technical characteristic of above example can be combined arbitrarily, to make description succinct, not to above-described embodiment In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance Shield, is all considered to be the scope of this specification record.

Above example only expresses the several embodiments of the present invention, and it describes more specific and detailed, but can not Therefore it is construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, On the premise of not departing from present inventive concept, various modifications and improvements can be made, these belong to protection scope of the present invention. Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims

1. a kind of printer, it is characterised in that including：Frame, the frame is provided with two paper feed passages, including the first paper feed Passage and the second paper feed passage, frame include panel layer, intermediate layer, support, and intermediate layer is located at below panel layer, and panel layer is with It is the first paper feed passage between interbed, support is located at below intermediate layer, is second paper feed between intermediate layer and support Passage, frame is provided with printhead, and the first paper feed passage and the second paper feed passage are docked with printhead respectively；

Wherein, panel layer is removably installed on support, and intermediate layer is removably installed on panel layer or support；Or, Panel layer is removably installed on intermediate layer, and intermediate layer is removably installed on support；

The support is provided with slide rail, and the panel layer and the intermediate layer are installed on the slide rail, the panel layer and institute State support to be slidably matched, the intermediate layer is slidably matched with the support；The slide rail is shaft-like, and the first end of the slide rail is pacified Loaded on the panel layer, the support is provided with accommodating cavity and the first slide opening connected with the accommodating cavity, the slide rail The second end stretched into through first slide opening in the accommodating cavity, the slide rail is slidably matched with the support；The centre Layer is provided with the second slide opening, and the slide rail passes through second slide opening, and the intermediate layer is slidably matched with the slide rail；The machine Transport roller is additionally provided with frame and paper drive mechanism is moved back, paper drive mechanism is moved back and is docked with transport roller, paper feed passage passes through transport roller Surface, moving back paper drive mechanism is used to drive transport roller to make counter motion of the printing paper to page orientation.

2. printer according to claim 1, it is characterised in that the inwall of the accommodating cavity is provided with the first buckle, institute State the edge that the first buckle is located at first slide opening, the second end of the slide rail is provided with the second buckle, first buckle with Second buckle is engaged.

3. printer according to claim 2, it is characterised in that suppress hole, the first bullet provided with first in the intermediate layer Property body and first suppresses body, and described first suppresses body and first elastomer is installed on described first and suppressed in hole, and described One end of one elastomer is docked with the intermediate layer and the other end suppresses body with described first and docked, and described first suppresses body At least partly stretched out from the described first opening for suppressing hole；

Or, on the panel layer or/and the support suppresses hole, the second elastomer and second provided with second and suppresses body, institute State second and suppress body and second elastomer is installed on described second and suppressed in hole, one end of second elastomer with it is described Panel layer is docked and the other end suppresses body with described second and docked, and described second suppresses body at least partly from second bullet The opening in hole is pressed to stretch out.

4. the printer according to any one of claims 1 to 3, it is characterised in that among the intermediate layer and the support, One of them is provided with the first buckle, and another is provided with the first buckle hanging unit, and first buckle and first buckle hanging unit are detachable Ground is fastened；Or/and, among the intermediate layer and the panel layer, one of them is provided with the second buckle, and another hangs provided with second Buckle, second buckle is removably fastened with second buckle hanging unit.

5. the printer according to any one of claims 1 to 3, it is characterised in that also including governor circuit, the master control electricity Road is installed on the support or the panel layer, among the support or the panel layer, and one of them is provided with safety Switch, another is provided with press section, and the safety switch and the governor circuit are electrically connected with, when the panel layer slides into the During one position, the press section abuts the safety switch.

6. the printer according to any one of claims 1 to 3, it is characterised in that the panel layer is provided with printhead, institute Support is stated provided with the printing pressure roller with the printhead corresponding matching, the side surface of the printing pressure roller is the conveying of printing paper Face, the outlet of the first paper feed passage and the second paper feed passage is matched with the conveyor surface respectively, first paper feed Passage and the second paper feed passage are docked by the printing pressure roller with the printhead respectively.

7. printer according to claim 6, it is characterised in that printing pressure roller groove is offered on the intermediate layer, described Print pressure roller groove corresponding with the printhead, the printing pressure roller is installed at the printing pressure roller groove.

8. printer according to claim 6, it is characterised in that the intermediate layer is at least two, two neighboring centre It is additional paper feed passage between layer, the outlet of the additional paper feed passage is matched with the conveyor surface, the additional paper feed passage Docked by the printing pressure roller with the printhead.

9. printer according to claim 6, it is characterised in that the cross section in the intermediate layer is wedge-shaped, and wedge-shaped It is top towards the printing pressure roller, the outlet of the first paper feed passage and the outlet of the second paper feed passage are approached.

10. printer according to claim 1, it is characterised in that also include：

Printing transmission mechanism, paper feed transmission mechanism and the paper feed switching mechanism for the mutual cooperation being arranged in the frame；

The first motor that the printing transmission mechanism includes being arranged in the frame, it is connected with first motor Printing gear train；The paper feed transmission mechanism includes the paper feed gear train being connected with first motor, And at least two paper feeds drive mechanism corresponding with the paper feed gear train；

The second motor that the paper feed switching mechanism includes being arranged in the frame, it is connected with second motor Oscillation switching mechanism, the oscillation switching mechanism and the paper feed drive mechanism and paper feed gear train corresponding matching.

11. printer according to claim 10, it is characterised in that the paper feed transmission mechanism also include with it is described walk The corresponding first paper feed drive mechanism of paper gear train and the second paper feed drive mechanism；

The paper feed switching mechanism also includes the swing change gear being connected with the oscillation switching mechanism, the swing switching Gear is engaged with the paper feed gear train, while the swing change gear and the first paper feed drive mechanism or described Second paper feed drive mechanism correspondence is connected.

12. the printer according to claim 11, it is characterised in that the oscillation switching mechanism includes and the described second driving The train of reduction gears of motor connection, the toggle being connected with the train of reduction gears, the toggle and institute Swing change gear connection is stated, and the swing change gear is slidably connected in the frame.

13. the printer according to claim 12, it is characterised in that the toggle includes being fixed on the deceleration The second rocking arm that the first rocking arm and first rocking arm that positioning rocking handle and the positioning rocking handle on gear train are hinged are hinged, And second rocking arm is connected in the swing change gear.

14. the printer according to claim 13, it is characterised in that the oscillation switching mechanism also includes being fixed on the machine Switching stroke piece on frame, one end and the positioning rocking handle fix the other end and the train of reduction gears is connected suppresses fixed knot Structure, and be arranged in the switching stroke piece center and suppress the bearing assembly that fixed structure is connected with described.

15. the printer according to claim 14, it is characterised in that the fixed mechanism that suppresses includes and the positioning rocking handle Fixed fixed shell, is arranged at the elastic component in the fixed shell, is connected with the elastic component and protrudes from the fixation The ball of housing；

The switching stroke piece surface is provided with one section of recessed slideway of arc, and the recessed slideway two ends of arc are respectively arranged with two and determined Position groove, the ball is located in the recessed slideway or detent.

16. the printer according to claim 13, it is characterised in that the paper feed gear train includes driving with described first The paper feed driving transition gear of dynamic motor connection, the paper feed for driving transition gear to engage with the paper feed drive synchromesh gear, institute Paper feed driving synchromesh gear is stated to engage with the swing change gear；

Second one end is hinged with first rocking arm, is connected in the middle part of second rocking arm with the swing change gear Connect, and the second rocking arm other end is fixed with paper feed driving synchromesh gear.

17. according to any one of claim 10 to 16 printer, it is characterised in that the first paper feed drive mechanism includes The first paper feed pressure roller being arranged in the frame, the first paper feed synchromesh gear being connected with the first paper feed pressure roller, it is described First paper feed synchromesh gear is corresponding with the paper feed gear train；

The second paper feed drive mechanism includes the second paper feed pressure roller being arranged in the frame and the second paper feed pressure roller Second paper feed synchromesh gear of connection, the second paper feed synchromesh gear is corresponding with the paper feed gear train；

The swing change gear is engaged with the paper feed gear train, while the swing change gear is walked with described first Paper synchromesh gear or the second paper feed synchromesh gear correspondence are engaged.

18. the printer according to claim 17, is further characterized in that, the first paper feed pressure roller include the first paper feed drive roll with And the first paper feed driven voller coordinated with the first paper feed drive roll, the second paper feed pressure roller includes the second paper feed drive roll and with the The second paper feed driven voller that two paper feed drive rolls coordinate, the first paper feed drive roll, the first paper feed driven voller, described the Two paper feed drive rolls, the second paper feed driven voller include roller core and the multistage rubber roll body being set around on roller core.

19. according to printer described in claim 18, be further characterized in that, the first paper feed driven voller and second paper feed from The two ends of dynamic roller are arranged with circular ball bearing, and intermediate layer includes intermediate plate, and support includes body plate, the intermediate plate and Body plate both sides are provided with the circular arc bearing groove for installing the ball bearing.

20. the printer according to claim 17, is further characterized in that, the printing transmission mechanism also includes to be beaten with described The printing synchromesh gear of print gear train engagement and the printing pressure roller being connected with the printing synchromesh gear.

21. printer, is further characterized in that according to claim 1, the frame is provided with least two locating parts, described Support, provided with the printing pressure roller with the printhead corresponding matching, is printing between the printing pressure roller and the printhead Area, two locating parts are located at the outlet both sides of the print zone respectively, and printing paper passes through the print zone from the printing The direction of the outlet in area out is page orientation.

22. printer according to claim 21, it is characterised in that on the page orientation, the of the locating part One end is located at the upstream at the second end of the locating part, and the second end of the locating part is provided with paper guide part is moved back, and the paper that moves back is led To portion towards the side of the outlet of the print zone to move back paper spigot surface, the paper spigot surface that moves back inclines relative to the page orientation Tiltedly set, described on two locating parts, which moves back, constitutes horn mouth between paper spigot surface, and bell-mouthed width is along described Page orientation gradually increases；

Or, the first end of the locating part is provided with paper feed guide part, outlet of the paper feed guide part towards the print zone Side be paper feed spigot surface, the paper feed spigot surface is obliquely installed relative to the page orientation, on two locating parts The paper feed spigot surface between constitute horn mouth, and bell-mouthed width is gradually reduced along the page orientation.

23. printer according to claim 21, it is characterised in that the printhead is located at the top of the support, institute The upper surface that locating part is installed on the support is stated, the top of the locating part has spacing pressing plate, and the spacing pressing plate is stretched into The top of the outlet of the print zone.

24. the printer stated according to claim 23, it is characterised in that on the page orientation, the of the spacing pressing plate One end is located at the upstream at the second end of the spacing pressing plate, and the second end of the spacing pressing plate is baroclined portion provided with moving back paper, described to move back The barocline bottom in portion of paper is baroclined face to move back paper, and the paper face of baroclining of moving back is obliquely installed relative to the page orientation, described to move back paper Barocline and horn mouth is constituted between face and the support, and bell-mouthed height gradually increases along the page orientation；

Or, the first end of the spacing pressing plate is baroclined portion provided with paper feed, and the barocline bottom in portion of the paper feed is baroclined face for paper feed, Paper feed face of baroclining is obliquely installed relative to the page orientation, and the paper feed baroclines constitutes loudspeaker between face and the support Mouthful, and bell-mouthed height is gradually reduced along the page orientation.

25. the printer stated according to claim 21, it is characterised in that described at least two among locating part, including symmetrically set The first locating part and the second locating part put, the first rack being connected with first locating part connect with second locating part The second rack connect, and the travelling gear engaged simultaneously with first rack and the second rack, first rack and Two racks are located at the both sides of the travelling gear；

Also include the nut-screw mechanism being connected on first locating part or the second locating part.

26. the printer according to claim 25, is further characterized in that, the nut-screw mechanism includes being connected to described the Nut on one locating part or the second locating part, and the screw rod being arranged on the nut, the screw rod and first tooth Bar or the second rack keeping parallelism, the screw rod end is provided with knob.

27. the printer according to claim 25, is further characterized in that, the support is provided with stamp pad, the stamp pad On offer stopper slot, first locating part and the second locating part, which are slided, to be arranged in above the stopper slot, and described the One rack, the second rack and nut-screw mechanism are respectively positioned on below the stopper slot, and nut-screw mechanism one end is stretched out In the stamp pad.

28. the printer according to any one of claim 21 to 27, it is characterised in that the bottom surface of the panel layer, described Among the top surface of the top surface in intermediate layer, the bottom surface in the intermediate layer and the support, at least one of which face is provided with least two It is individual side by side lead paper fin, the length direction for causing fin matches with the page orientation of the corresponding paper feed passage.

29. printer according to claim 1, it is characterised in that also including moving be connected in the frame at least one Individual spool；

The frame includes symmetrically arranged two side plates, and each side plate interior sides are provided with least one side plate clamping Side plate Access Division in portion, and two side plates is in correspondence；

Each spool includes cylindric axis body, and is respectively arranged at the spool Access Division at the axis body two ends, and two The spool Access Division respectively with the side plate Access Division activity clamping on two side plates.

30. printer according to claim 29, it is characterised in that the side plate Access Division includes being arranged at the side plate On the formation of protrusion frame side plate guide groove, be provided with that side plate is raised or depressed side board in the side plate guide groove, and the side plate Guide groove is provided with guide groove opening；

Spool depression is provided with the spool Access Division or spool is raised, the spool depression and the raised corresponding card of the side plate Connect or the raised clamping corresponding with the depressed side board of the spool.

31. printer according to claim 29, it is characterised in that the spool includes：Axis body, at least two location divisions Part and at least two elastic components, positioning element are slidably mounted on axis body, and elastic component is corresponded with positioning element to be coordinated, bullet One end of property part is installed on corresponding positioning element, and the other end is installed on axis body；

Wherein, when positioning element is moved to predeterminated position, reel installation position, the bullet of elastic component are constituted between two positioning elements Power makes two positioning elements mutually gather.

32. printer according to claim 31, it is characterised in that the positioning element includes sliding block and clamp, described Sliding block is slidably mounted on the axis body, and the sliding block is provided with convex, side of the convex relative to the axis body Face is raised, and the clamp is provided with first through hole, and the clamp is set in outside the axis body by first through hole thereon, two The clamp is located between two convexes, and the reel installation position is constituted between two clamps.

33. printer according to claim 32, it is characterised in that the sliding block includes connection end and at least two bullets Arm, one end of the elastic arm is connected with the connection end and at least two elastic arms are located at the same side of the connection end, described Convex is located at the outside of the elastic arm.

34. spool according to claim 33, it is characterised in that the convex on the elastic arm is in the axis body At least two staggered on axial direction.

35. printer according to claim 34, it is characterised in that the sliding block is two, including the first sliding block and the Two sliding blocks；The elastic component is two, including the first elastic component and the second elastic component；From the first end of the axis body to the second end It is sequentially installed with first sliding block and second sliding block, and the connection end of first sliding block and second sliding block Connection end is approached in opposite directions, and one end of first elastic component is installed on the connection end of first sliding block and the other end is installed In the second end of the rotating shaft, one end of second elastic component is installed on connection end and the other end of second sliding block It is installed on the first end of the rotating shaft.

36. the printer according to any one of claim 32 to 35, it is characterised in that axocoel, institute are provided with the axis body State sliding block to be installed in the axocoel, the axis body stretches out provided with fluting, the convex out of described fluting, the axis body Including the first semiaxis and the second semiaxis, first semiaxis and second semiaxis are encircled into the axocoel, and the sliding block is pacified On inwall loaded on first semiaxis, the fluting is located between first semiaxis and second semiaxis.

37. the printer according to any one of claim 32 to 35, it is characterised in that the clamp is pacified towards the reel The side for filling position is provided with second boss, and the second boss is provided with third through-hole, the first through hole and the third through-hole Connection, the axis body passes through the third through-hole.