Summary of the invention
The main purpose of the utility model provides a kind of printhead and the simple bill printing machine core of support disassembling section.
For realizing above-mentioned main purpose, the bill printing machine core that the utility model provides comprises support, and printhead is installed on the support, and support is provided with rubber roll near printing first side; And be provided with motor in the support, motor drives the rubber roll rotation through transmission mechanism, and printhead is provided with heat-sensitive sheet near a side of support; Wherein, printhead is provided with a locating shaft, and support has support; One tumbler is installed on the support through rotating shaft, and tumbler can rotate around the axis, and tumbler has to printhead to the trip that extends and cooperate with locating shaft; A sidewall of support is equipped with pulling piece outward, and pulling piece is provided with projection near tumbler one side, and the sidewall of tumbler is provided with the hole that cooperates with projection; Be provided with limiting plate in the support, and be with first torsion spring in the rotating shaft, the bipod of first torsion spring is connected to respectively on the panel of limiting plate and tumbler.
Visible by such scheme, the locating shaft of printhead can be caught on by the trip of support, thereby realizes being fixedly connected of printhead and support; When needing the dismounting printhead; Through pulling pulling piece, drive tumbler by pulling piece and rotate, trip and locating shaft take off and collude; Can realize the dismounting of printhead and support like a cork, it is simple to operation to uncap.And, tumbler, pulling piece and torsion spring simple in structure, the production cost of bill printing machine core is not high.
A preferred scheme is, offers slide opening on the sidewall of support, and projection passes slide opening and can in slide opening, reciprocatingly slide.
This shows,, avoid the tumbler slewing area excessive and be damaged, also avoid tumbler that miscellaneous part is impacted through the sliding trace and the sliding scale of slide opening restriction projection.
Further scheme is, the middle part of pulling piece is provided with through hole, and an end of rotating shaft passes this through hole.
It is thus clear that pulling piece also is to be fixed on outside the side of tumbler through rotating shaft, like this, the installation of pulling piece, fixing very convenient, and help simplifying the structure of support, reduce the production cost of printhead.
Further scheme is again, and the bill printing machine core also comprises the peeling paper assembly, and the peeling paper assembly has rack-mount axle and the friction mandrel peeled off, and sees that by the page orientation of printing paper peel off the downstream that axle is positioned at rubber roll, friction mandrel is positioned at the downstream of rubber roll.
Visible by such scheme, through the peeling paper assembly is set on support, bill printer can be peeled off the bar code paper that sticks on through adhesive sticker on the printing paper, helps bar code paper and sees off swimmingly from the bill printing machine core.
Scheme further is, printhead has fixed mount, and heat-sensitive sheet is positioned at the below of fixed mount; Fixed mount is provided with the pressure adjusting part, and the pressure adjusting part comprises spring housing and be sleeved on the outer holder of spring housing that the outer wall of spring housing is provided with adjustable column; Holder is provided with the end difference that cooperates with adjustable column, and a spring is contained in the spring housing, and the upper end of spring is connected on the inwall of spring housing; The lower end is connected on the heat-sensitive sheet fixed head, and the heat-sensitive sheet fixed head is fixed on the top of heat-sensitive sheet.
This shows; Because fixed mount is provided with the pressure adjusting part and is used to regulate the pressure between heat-sensitive sheet and the rubber roll; When the literal that on printing paper, forms and pattern are thin out or fuzzy; Can be through the rotation spring housing, thus spring housing makes the literal, pattern of printing become clear to heat-sensitive sheet fixed head intensified pressure.
Scheme further is that friction mandrel has main shaft and is sleeved on the friction member on the main shaft, at least one axle head of main shaft the plectrum that is used to drive main axle moving is installed.
Scheme further is, printhead is provided with the RF transmitter that is provided with towards the support direction, and support is provided with the infrared receiver that is oppositely arranged with RF transmitter.
The specific embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3; The bill printing machine core of the utility model is releasably attached in the casing of bill printer; And movement is made up of printhead 10 and support 40; Printhead 10 is removably mounted on the top of support 40, forms the paper feed passage between printhead 10 and the support 40, and printing paper can pass from the paper feed passage.
Referring to Fig. 4, printhead 10 has fixed mount 11, on two sidewalls of fixed mount 11, is respectively equipped with a draw-in groove 28.Connecting plate 14 is installed on the fixed mount 11, and connecting plate 14 is connected to heat-sensitive sheet 33 (Figure 10 shows) through heat-sensitive line 15, and the top of heat-sensitive sheet 33 is provided with heat-sensitive sheet fixed head 16, is used for heat-sensitive sheet 33 fixing.Heat-sensitive sheet fixed head 16 is installed on the fixed mount 11 through axle 17, and axle 17 two ends are separately installed with jump ring 18, avoids axle 17 to move vertically with respect to fixed mount 11.
Heat-sensitive sheet 33 is positioned at the top of paper feed passage, and when bill printer printed operation, printing paper was from heat-sensitive sheet 33 below processes, and heat-sensitive sheet 33 passes through the heating of the film on the printing paper, thereby on printing paper, forms corresponding literal and pattern.
Fixed mount 11 is provided with locating shaft 12, and the two ends of locating shaft 12 are equipped with jump ring 13, and jump ring 13 lays respectively near the inner surface of fixed mount 11 two sides, is used to prevent that locating shaft 12 is in fixed mount 11 upper edge axially-movables.Certainly, like Fig. 2 and shown in Figure 3, after locating shaft 12 was installed to fixed mount 11, extended respectively outside the two side of fixed mount 11 at the two ends of locating shaft 12.
Also be provided with circuit board 30 on the fixed mount 11, the below of circuit board 30 is equipped with RF transmitter 31, is used to send infrared signal.And RF transmitter 31 is towards the direction setting of support 40.
Printhead 10 is provided with two groups of pressure adjusting parts 20, and each group pressure adjusting part 20 is made up of holder 21, spring housing 23 and spring 25, offers two through holes 26 on the panel of fixed mount 11, and each through hole 26 is corresponding to one group of pressure adjusting part 20.And heat-sensitive sheet fixed head 16 is positioned at the below of fixed mount 11, and just heat-sensitive sheet 33 is positioned at the below of fixed mount 11.
Holder 21 is sleeved on outside the spring housing 23, and holder 21 is provided with end difference 22, and end difference 22 has four ladder positions, and on vertical, the lower end of each ladder position is different with distance between holder 21 upper surfaces.And the upper surface of holder 21 indicates Arabic numerals " 1 ", " 2 ", " 3 ", " 4 ", respectively for a ladder position.In addition, the perisporium of holder 21 is provided with screens, is used for cooperating with through hole 26, so that holder 21 is installed in the through hole 26.
The outer wall of spring housing 23 is provided with an adjustable column 24, and adjustable column 24 is provided with towards end difference 22, and cooperates with end difference 22.When adjustable column 24 was positioned at the below of different ladders position, the distance between spring housing 23 lower surfaces and holder 21 upper surfaces changed.And the upper surface of spring housing 23 is provided with line in the cross, can be by the Phillips screwdriver turn, and line has an arrow in the cross, can point to the numeral of holder 21, makes things convenient for the user to understand current adjustable column and is positioned under which ladder position.
Spring 25 is installed in the spring housing 23, and the upper end of spring 25 is connected on the inwall of spring housing 23, and the lower end is connected on the heat-sensitive sheet fixed head 16.Like this,, can change the distance between heat-sensitive sheet fixed head 16 and the fixed mount 11, thereby regulate the spacing of heat-sensitive sheet 33 and printing paper through regulating the position of holder 21.
Because two groups of pressure adjusting parts 20 are arranged at the two ends of heat-sensitive sheet fixed head 16 respectively; When the spacing between heat-sensitive sheet 33 two ends and the printing paper is inconsistent; Scalable is the spring housing 23 of one group of pressure adjusting part 20 wherein; Be the spacing between scalable heat-sensitive sheet 33 and the printing paper, make heat-sensitive sheet 33 two ends consistent, guarantee print quality with the printing paper spacing.
Referring to Fig. 5; Support 40 has support 41, and tumbler 50 is installed on the support 41, the sidewall 51 that tumbler 50 has panel 54 and is positioned at panel 54 two ends; The end of each sidewall 51 is provided with trip 52; The quantity that is trip 52 is two, and two trips 52 lay respectively at the two ends of tumbler 50, and two sidewalls 51 of tumbler 50 all are positioned at the inboard of support 41 sidewalls.
Each trip 52 is respectively towards printhead 10 direction settings, and each trip 52 is used for cooperating with the locating shaft 12 of printhead 10.When printhead 10 was installed to support 40, trip 52 colluded respectively on locating shaft 12.
Tumbler 50 is installed on the support 41 through rotating shaft 55, so tumbler 50 can 55 rotate around the shaft.One end of tumbler 50 is provided with pulling piece 56 outward, and the middle part of pulling piece 56 has through hole 58, and an end of rotating shaft 55 passes through hole 58, so pulling piece 56 55 axis rotation around the shaft.
Pulling piece 56 is provided with projection 57 towards a side of tumbler 50, and tumbler 50 is provided with the hole 53 that cooperates with projection 57, but in projection 57 patchholes 53.Pulling piece 56 also is provided with spanner 59, through pulling spanner 59, can drive pulling piece 56 and rotate, and 55 rotates around the shaft thereby drive tumbler 50.
As shown in Figure 3, pulling piece 56 is positioned at outside the sidewall of support 41, and tumbler 50 is positioned at the sidewall of support 41, therefore as shown in Figure 5, the sidewall of support 41 is provided with slide opening 42, and projection 57 can pass slide opening 42 and in slide opening 42, move back and forth.Like this, limit the movement locus and the range of movement of projections 57 through slide opening 42, avoid pulling piece 56 rotational angles excessive, the slewing area of also avoiding tumbler 50 is excessive and influence other devices.
Be set with torsion spring 60 in the rotating shaft 55, torsion spring 60 has two pin 61,62, and wherein pin 61 is connected on the panel 54 of tumbler 50.Referring to Fig. 6, be provided with limiting plate 64 in the support 41, the pin 62 of torsion spring 60 is connected on the limiting plate 64.Like this, after tumbler 50 was rotated, torsion spring 60 can return to initial position with tumbler 50.
Referring to Fig. 5, be respectively equipped with mounting groove 43 on two sidewalls of support 41, after printhead 10 was installed to support 40, locating shaft 12 was installed in the mounting groove 43.And the sidewall of support 41 is near near the installation microswitch 44 of mounting groove 43, and is as shown in Figure 2, and after locating shaft 12 was installed to mounting groove 43, locating shaft 12 touched microswitch 12.Certainly, whether microswitch 43 is exported signal through electric connection line to bill printer, be in place so that bill printer is known printhead 10.
Rubber roll 76 is installed on the support 41, and rubber roll 76 comprises axle 77 and is wrapped in the rubber layer outside the axle 77 that the two ends of axle 77 are stretched out outside the rubber layer.The two ends of axle 77 are with axle sleeve 78 respectively.
In support 41, be provided with motor 70, motor 70 receives outside power supply through electric connection line 48.Be set with driven wheel 71 on the output shaft of motor 70, driven wheel 71 is by motor 70 driven in rotation.Outside a sidewall of support 41, three gears 72,73,74 are installed, its middle gear 72 and gear 71 engagements are driven by gear 71.Gear 73 and gear 72 engagements are driven by gear 72.Gear 74 and gear 73 engagements are driven by gear 73.And an end of axle 77 inserts in the axis hole of gear 74, and therefore, rubber roll 76 is by gear 74 driven in rotation.It is thus clear that in the present embodiment, gear 71,72,73,74 has been formed one group of gear train, it has realized driving rubber roll 76 rotations by motor 70 as the transmission mechanism of present embodiment.
Be provided with in a side of support 41 and cover 75, be used for a plurality of gears of support 41 1 sides are blocked, it is impaired to avoid gear to receive external impacts on the one hand, can make support 40 more attractive in appearance on the other hand.
Also be provided with circuit board 46 on the support 41, circuit board 46 is provided with infrared receiver 47, infrared receiver 47 be positioned at RF transmitter 31 under, be used for the infrared signal that receiving infrared-ray transmitter 31 sends.
Present embodiment also is provided with peeling paper assembly 80, comprises peeling off axle 83 and friction mandrel 80, peels off axle 80 and is installed on the support 41 near rubber roll 76 places, and friction mandrel 80 is positioned at the below of peeling off axle 83.Peel off axle 83 two ends and be respectively installed with jump ring 84, avoid peeling off axle 83 and move vertically with respect to support 41.
Friction mandrel 80 has main shaft 81, is set with a plurality of friction members 82 on the main shaft 81, and the surface of each friction member 82 is a non-smooth surface.Be respectively installed with plectrum 90 on the two ends of main shaft 81, be used to drive friction mandrel 80 and move.
Two inside surface of side wall of support 41 are provided with to the support 41 inner torsion spring posts 85 that extend, and are set with a torsion spring 86 on each torsion spring post 85, and the end of a pin 87 of each torsion spring 86 is provided with hook part 88, colludes on main shaft 81.The another pin 89 of torsion spring 86 is connected on the outer wall of support 41.Like this, after plectrum 90 drive friction mandrels 80 moved, after the power disappearance that is applied on the plectrum 90, torsion spring 86 can return to initial position with friction mandrel 80.
In addition, when printhead 10 was installed to support 40, the draw-in groove 28 of printhead 10 is fastened on to be peeled off on the axle 83.
As shown in Figure 7, printhead 10 was installed to 40 o'clock, and trip 52 colludes on locating shaft 12, and, draw-in groove 28 with peel off axle and 83 cooperate, realize fixing of printhead 10 and support 40.
When uncapping operation, pull the spanner 58 of pulling piece 56, pulling piece 56 is 55 rotations around the shaft, thereby drive trip 52 rotations, and trip 52 withdraws from from locating shaft 12, and is as shown in Figure 8, and realization printhead 10 separates with support 40.And, be typically provided with the hook that is used to catch on printhead on the casing of bill printer, when opening the bill printer casing, hook can directly trigger printhead.And draw-in groove 28 openings of printhead 10 are bigger, peel off axle 83 and are easy to from draw-in groove 28 to break away from, thereby realize easily separating of printhead 10 and support 40.It is thus clear that the structure of present embodiment lets being connected firmly of printhead 10 and support 40, and dismounting is simple, it is easy to operate to uncap.
In addition, shown in figure 10, the paper feed passage has paper feed port and exit slot, and paper feed port is positioned at the below of printhead 10, and is positioned at the top of support 40 away from rubber roll 76 1 sides.Exit slot and paper feed port are oppositely arranged, and it is positioned at the below of printhead 10 near heat-sensitive sheet 33 1 sides, and are positioned at the top of support 40 near rubber roll 76 1 sides.Be the front end that exit slot is positioned at movement, that direction is set is consistent with the exit slot of bill printer casing.
The heat-sensitive sheet 33 of printhead 10 is provided with over against the rubber roll 76 of support 40, during printing paper process paper feed passage, produces bigger frictional force between rubber roll 76 and the printing paper, when rubber roll 76 rotations, can promote printing paper and advance.
As shown in Figure 9, see that by the page orientation of printing paper 91 friction mandrel 80 is positioned at the downstream of rubber roll 76, and to peel off axle 83 also be the downstream that are positioned at rubber roll 76.
When installation has the printing paper 91 of bar code paper, pull plectrum 90, form the gap between friction mandrel 80 and the rubber roll 76, printing paper 91 is from friction mandrel 80 and peel off axle and pass between 83.After printing paper is installed, unclamp plectrum 90, shown in figure 10 at this moment, friction mandrel 80 and rubber roll 76 adjacency.
During printing, rubber roll 76 rotations drive printing paper 91 and move forward.And bill printer sends infrared signal through RF transmitter 31, the infrared signal that infrared receiver 47 receiving infrared-ray transmitters 31 send, and judge the spacing of bar code paper according to received signal, thus judge the position of bar code paper.
Printing paper 91 moves downward after peeling off axle 83, and sees off from the below of friction mandrel 80, and at this moment, the bar code paper 92 that is bonded on the printing paper 91 separates with printing paper 91, and sees off from the top of friction mandrel 80, thereby realizes the separation of bar code paper 92.
Certainly, present embodiment also can use common printing paper to print, and is shown in figure 11, do not pull plectrum 90 when printing paper 93 is installed, and printing paper 93 is seen off from peeling off axle 83 tops.
Present embodiment can be applicable to the printing paper printing that is bonded with bar code paper, also be applicable to the printing paper printing that does not have bar code paper, and the peeling paper modular construction is simple, can realize effectively that bar code paper separates with printing paper.
Certainly, the foregoing description only is the preferable embodiment of the utility model, during practical application more variation can also be arranged, and for example, microswitch is arranged on the inboard of support sidewall; Perhaps, use the kinds of drive such as belt transmission or chain transmission to substitute gear drive, and corresponding adjustment transmission mechanism, these change the purpose that can realize the utility model equally.
It is emphasized that at last the utility model is not limited to above-mentioned embodiment, also should be included in the protection domain of the utility model claim like the change of trip quantity and shape, the change of pulling piece shape, the variations such as change of transmission mechanism.