CN202264502U

CN202264502U - Bill printer engine

Info

Publication number: CN202264502U
Application number: CN2011203644248U
Authority: CN
Inventors: 胡琳
Original assignee: Zhuhai Saida Precision Electronic Technology Co Ltd
Current assignee: Zhuhai Hao Sheng label printer Co., Ltd.
Priority date: 2011-09-26
Filing date: 2011-09-26
Publication date: 2012-06-06
Anticipated expiration: 2021-09-26

Abstract

The utility model provides a bill printer engine including an engine base. A printing head is installed on the engine base. A rubber covered roller is arranged on a side of the engine base close to the printing head. A motor is arranged in the engine base. The motor drives the rubber covered roller through a transmission mechanism. A thermo-sensitive sheet is arranged on a side of the printing head close to the engine base. A positioning shaft is arranged on a side of the engine base close to the printing head. The printing head is provided with a support. A rotary piece is installed on the support through a rotary shaft. The rotary piece rotates around the rotary shaft. The rotary piece is provided with a snap extending towards a direction of the engine base and cooperating with the positioning shaft. A wrenching piece is installed on a side wall of the rotary piece. A protruding column is arranged on a side of the wrenching piece close to the rotary piece. The side wall of the rotary piece is provided with a groove cooperating with the protruding column. A pull spring is installed between the support and the rotary piece. One end of the spring is fixed on the support while the other end is fixed on the rotary piece. In the utility model, the printing head of the bill printer engine connects with the engine base firmly, and the uncovering operation is simple, thereby facilitating the realization of the dismounting of the printing head and the engine base.

Description

The bill printing machine core

Technical field

The utility model relates to the printing field, the bill printing machine core that especially a kind of bill printer uses.

Background technology

The Automatic Teller Machine of bank, the cashier in supermarket are provided with bill printer mostly, are used for printing transaction with bar or receipt.Bill printer has a casing usually, and a movement is installed in casing, and movement is made up of printhead, support and cut paper cutting knife, and wherein printhead is installed in the top of support, and the cut paper cutting knife is installed in a side of support and printhead.

Printhead is positioned at the top of support, and printhead is provided with heat-sensitive sheet near a side of support, is used for the heating of the film on the thermal printing paper, makes and forms literal and pattern on the thermal printing paper.

The upper end of support is equipped with rubber roll, and is provided with a motor in the support, and motor is through transmission mechanism, and like drive rubber roll rotations such as travelling gears, rubber roll is over against the heat-sensitive sheet setting.

Form the paper feed passage between printhead and the support; Rubber roll and heat-sensitive sheet are separately positioned on the both sides of paper feed passage; When thermal printing paper passed the paper feed passage, rubber roll and heat-sensitive sheet were with the thermal printing paper clamping, and the bigger frictional force of formation between thermal printing paper and the rubber roll.When rubber roll rotates, drive thermal printing paper through frictional force and move forward, advance thereby promote thermal printing paper.

Owing to need often to change thermal printing paper during bill printer work; Therefore need often need printhead be disassembled from support; Therefore the operation of just uncapping is provided with cap-opening mechanism on existing printhead and the support so that the operation of uncapping, but existing cap-opening mechanism complex structure; Cause the operating difficulties of uncapping, be unfavorable for the operation that thermal printing paper is changed.

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, support is provided with locating shaft near a side of printhead, and printhead has support; One tumbler is installed on the support through rotating shaft, and tumbler can rotate around the axis, and tumbler has the trip that extends and cooperate with locating shaft to the support direction; A sidewall of tumbler 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 groove that cooperates with projection; Between support and the tumbler extension spring is installed, an end of extension spring is fixed on the support, and the other end is fixed on the tumbler.

Visible by such scheme, printhead cooperates with locating shaft on the support through trip, thus being fixedly connected of realization 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.

A preferred scheme is, the quantity of trip is two, and two trips lay respectively at the two ends of tumbler.

This shows, trip is set respectively, help the secure fit of printhead and support, avoid being connected the unstable print quality problem that causes with support because of printhead in the tumbler both sides.

Further scheme is, the middle part of pulling piece is provided with through hole, and first 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 printhead, reduce the production cost of printhead.

Further scheme is that second end of rotating shaft stretches out outside the sidewall of tumbler, and on second end jump ring is installed again.

Visible by such scheme, through on second end of rotating shaft, jump ring being set, can avoid pulling piece, tumbler with respect to support rotating shaft axially on relative motion takes place, guarantee pulling piece, tumbler and support mounting stability.

Scheme further is; Form the paper feed passage between support and the printhead; The paper feed passage is provided with paper feed port and exit slot; Paper feed port is positioned at the top of support away from a side of rubber roll, and exit slot is positioned at the top of support near rubber roll one side, and exit slot is positioned at the below of printhead near heat-sensitive sheet one side.

This shows; The paper feed port and the exit slot of paper feed passage are oppositely arranged; Be the rear end that paper feed port is positioned at movement, exit slot is positioned at the front end of movement, is consistent with the direction that is provided with of bill printer casing exit slot; Help thermal printing paper and see exit slot off from the exit slot of bill printing machine core swimmingly, avoid the generation of jam condition to casing.

Description of drawings

Fig. 1 is the structure chart of the utility model embodiment.

Fig. 2 is the STRUCTURE DECOMPOSITION figure at another visual angle of the utility model embodiment, has hidden electric connection line among Fig. 2.

Fig. 3 is the STRUCTURE DECOMPOSITION figure of printhead and support among the utility model embodiment, has hidden electric connection line among Fig. 3.

Fig. 4 is the structure chart of parts such as printhead medium-height trestle, tumbler, pulling piece and extension spring among the utility model embodiment.

Fig. 5 is the structure chart of printhead among the utility model embodiment.

Fig. 6 is the STRUCTURE DECOMPOSITION figure of parts such as printhead medium-height trestle, tumbler, pulling piece and extension spring among the utility model embodiment.

Fig. 7 is the structure chart of support among the utility model embodiment, has hidden electric connection line among Fig. 7.

Fig. 8 is the STRUCTURE DECOMPOSITION figure that support has dwindled among the utility model embodiment, has hidden electric connection line among Fig. 8.

Fig. 9 be printhead and support in Fig. 1 A-A to cutaway view Amplified image, hidden Connection Block and electric connection line among Fig. 9.

Figure 10 is the structure chart of cut paper cutting knife among the utility model embodiment.

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

The specific embodiment

Referring to Fig. 1, 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 20, support 50 and cut paper cutting knife 80, and wherein, cut paper cutting knife 80 is made up of flat knife assembly 81 and slip knife assembly 86.

Referring to Fig. 2 and Fig. 3, printhead 20 is removably mounted on the top of support 50, and the upper end of printhead 20 is provided with Connection Block 21, and Connection Block 21 is provided with a plurality of splicing ears, is used for communicating with the controller of bill printer.Form the gap between printhead 20 and the support 50, this gap is the paper feed passage, and thermal printing paper can pass the paper feed passage.The paper feed passage has paper feed port and exit slot, and paper feed port is positioned at the rear end of movement, and exit slot is positioned at the front end of movement.

Be provided with in a side of support 50 and cover 75, be used for a plurality of gears of support 50 1 sides are blocked, it is impaired to avoid gear to receive external impacts on the one hand, can make support 50 more attractive in appearance on the other hand.

Referring to Fig. 4, Fig. 5 and Fig. 6, printhead 20 has support 22, and the outside of two sidewalls 23 of support 22 is provided with from sidewall 23 outward extending erection columns 24, and preferably, erection column 24 is one-body molded with support 22.Be respectively equipped with through hole 25 on the sidewall 23 of support 22, rotating shaft 36 can be passed two through holes 25.

Tumbler 30 is installed on the support 22, and tumbler 30 has two sidewalls 31, and sidewall 31 laterally arranges with the sidewall 23 of support 22.Be respectively equipped with trip 32 in the lower end of each sidewall 31, trip 32 is that the mainboard from tumbler 30 faces down and extends, and just extends towards support 50 directions.

Also be respectively equipped with through hole 33 on the sidewall 31 of tumbler 30, two through holes 33 are passed in rotating shaft 36, like this, and tumbler 30 36 rotations around the shaft.Outside a sidewall 31 of tumbler 30, be provided with pulling piece 37, the middle part of pulling piece 37 is provided with through hole 39, and first end of rotating shaft 36 passes through hole 39.Pulling piece 37 is provided with the spanner 38 of outside protrusion, and pulling piece 37 is provided with the projection 40 that extends to tumbler 30 directions near the position of tumbler 30.The sidewall 31 of tumbler 30 is provided with the groove 34 that cooperates with projection 40.Like this, after pulling piece 37, tumbler 30 are installed on the support 22 through rotating shaft 36,, can drive pulling piece 37 36 rotations around the shaft through pulling spanner 38, and tumbler 30 also 36 rotations around the shaft under the drive of pulling piece 37.

Second end of rotating shaft 36 stretches out outside another sidewall of tumbler 30, and on second end of rotating shaft 36, jump ring 41 is installed.Like this, tumbler 30, pulling piece 37 can be with respect to support 22 along not the endwisely slipping of rotating shaft 36, the installation that makes tumbler 30, pulling piece 37 more firmly, stable.

The mainboard face of support 22 is provided with two through holes 26; Also be provided with two through holes 35 on the mainboard face of tumbler 30; Two extension springs 28 are installed between support 22 and the tumbler 30; One end of each root extension spring 28 is fastened on the through hole 26 of support 22, and the other end is fastened on the through hole 35 of tumbler 30, thereby with the fixed-site between tumbler 30 and the support 22.Certainly, the quantity of extension spring 28 can be for more than two or two.

Below support 22; Being printhead 20 is provided with paper guiding sheet 45 and heat-sensitive sheet 46 near a side of support 50; Heat-sensitive sheet 46 is used for the heating of the film on the thermal printing paper and on thermal printing paper, forms literal and pattern, and paper guiding sheet 45 is used for thermal printing paper is led.Heat-sensitive sheet 46 all is positioned at the top of paper feed passage with paper guiding sheet 45, and all is positioned at the side of printhead 20 near exit slot, and paper guiding sheet 45 laterally arranges with heat-sensitive sheet 46.

Participate in Fig. 7 and Fig. 8, support 50 is provided with pedestal 51, is respectively equipped with a mounting groove 52 on two sidewalls of pedestal 51, is used for cooperating with the erection column 24 of printhead 20.When printhead 20 was installed to support 50, erection column 24 was installed in the mounting groove 52.In addition, the outside at a sidewall of pedestal 51 also is equipped with a microswitch 69, microswitch 69 be installed in mounting groove 52 near.As shown in Figure 2, after printhead 20 is installed on the support 50, erection column 24 will be installed in the mounting groove 52, and erection column 24 touches microswitches 69 at this moment, and promptly to bill printer output signal, expression printhead 20 has been installed on the support 50 microswitch 69.

Certainly, microswitch 69 to bill printer output signal, is hidden electric connection line 58 through electric connection line 58 (Fig. 1 shows) among Fig. 7, Fig. 8.

Rubber roll 53 is installed on the support 50, and rubber roll 53 comprises axle 54 and is wrapped in the rubber layer outside the axle 54 that the two ends of axle 54 are stretched out outside the rubber layer.The two ends of axle 54 are with axle sleeve 55 respectively.On two sidewalls of support 50, be respectively equipped with mounting groove 63, axle sleeve 55 is installed in respectively on two mounting grooves 63, axle 54 axle sleeve 55 rotations relatively.

In support 50, be provided with motor 70, motor 70 receives outside power supply through electric connection line, has hidden electric connection line among Fig. 8.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 50, three

gears

72,73,57 are installed, its middle gear 72 and gear 71 engagements are driven by gear 72.Gear 73 and gear 72 engagements are driven by gear 72.Gear 57 and gear 73 engagements are driven by gear 73.And an end of axle 54 inserts in the axis hole of gear 57, and therefore, rubber roll 53 is by gear 57 driven in rotation.It is thus clear that in the present embodiment,

gear

71,72,73,57 has been formed one group of gear train, it has realized driving rubber roll 53 rotations by motor 70 as the transmission mechanism of present embodiment.

For the ease of the installation of

gear

72,73, on a sidewall of support 50, two

sprockets

67,68 are set, gear 72 is installed on the sprocket 67 and around sprocket 67 rotations, gear 73 is installed on the sprocket 68 and around sprocket 68 and rotates.

The panel of support 50 is provided with loophole 64, and infrared optic-electric detects technique 65 is installed in the below of loophole 64.Because support 50 is positioned at the below of paper feed passage, so loophole 64 is arranged at the end of support 50 near the paper feed passage, and infrared optic-electric detects technique 65 also is the below that is positioned at the paper feed passage.Because the temperature of thermal printing paper and movement miscellaneous part is inequality; Therefore the infrared signal wavelength that gives off of thermal printing paper is also different with other devices of movement, so infrared optic-electric detects technique 65 detects through detecting the infrared signal existence whether specific wavelength is arranged whether thermal printing paper is arranged in the paper feed passage.

Infrared optic-electric detects technique 65 is also communicated by letter with bill printer through electric connection line, hides the electric connection line that is connected with infrared optic-electric detects technique 65 among Fig. 7, Fig. 8.Bill printer judges whether thermal printing paper is arranged in the paper feed passage after receiving the signal that infrared optic-electric detects technique 65 sends, if there is not thermal printing paper, then sends alarm signal, and the prompting user adds thermal printing paper.

Support 50 is installed with a locating shaft 60 near an end of printhead 20, and the axially parallel of locating shaft 60 is axial in rubber roll 53.As shown in Figure 9, after printhead 20 is installed to support 50, the trip 32 of the tumbler 30 of printhead 20 will catch on locating shaft 60, thereby realize cooperating of trip 32 and locating shaft 60.Like this, on the one hand, the erection column 24 of printhead 20 is installed in the mounting groove 52, and on the other hand, trip 32 catches on locating shaft 60, and realization printhead 20 is fixedly connected with support 50.

When uncapping operation, pull the spanner 38 of pulling piece 37, pulling piece 37 is 36 rotations around the shaft, thereby drive trip 32 rotations, and trip 32 withdraws from from locating shaft 60, realizes taking off colluding.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 mounting groove 52 has bigger uncovered; Erection column 24 can break away from from mounting groove 52 easily, realizes the dismounting of printhead 20.It is thus clear that the structure of present embodiment lets being connected firmly of printhead 20 and support 50, and dismounting is simple, it is easy to operate to uncap.

In addition, in the present embodiment, the paper feed port of paper feed passage is positioned at the below of printhead 20, and is positioned at the top of support 50 away from rubber roll 53 1 sides.Exit slot and paper feed port are oppositely arranged, and it is positioned at the below of printhead 20 near heat-sensitive sheet one side, and are positioned at the top of support 50 near rubber roll 53 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 46 of printhead 20 is provided with over against the rubber roll 53 of support 50, during thermal printing paper process paper feed passage, produces bigger frictional force between rubber roll 53 and the thermal printing paper, when rubber roll 53 rotations, can promote thermal printing paper and advance.

The bill printing machine core also is provided with the cut paper cutting knife; Referring to Figure 10; Cut paper cutting knife 80 is made up of flat knife assembly 81 and slip knife assembly 86, and flat knife assembly 81 is positioned at the top of slip knife assembly 86, and flat knife assembly 81 has fixed mount 82, catch 83 and flat blade 85; Flat blade 85 is installed on the fixed mount 82, and catch 83 is fixed on the fixed mount 82 through two screws 84.

Slip knife assembly 86 is provided with housing 87, and is provided with sliding blade in the slip knife assembly 86 (invisible among Figure 10), and sliding blade moves back and forth to flat blade on the direction that is parallel to plane, blade 85 place.When sliding blade upwards slides and during near flat blade 85, flat blade 85 can be with the thermal printing paper cutting.

Flat knife assembly 81 is arranged on the side of printhead 20 near exit slot, and slip knife assembly 86 is positioned at the side of support 50 near exit slot, and forms the gap between flat knife assembly 81 and the slip knife assembly 86, and thermal printing paper can pass from this gap.And this gap is positioned at outside the exit slot, and thermal printing paper can pass this gap after seeing off from exit slot, and by the cutting of cut paper cutting knife.

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 extension spring quantity, the variations such as change of transmission mechanism.

Claims

1. the bill printing machine core comprises

Support; On the said support printhead is installed, said support is provided with rubber roll near the first side of said printing, and is provided with motor in the said support; Said motor drives said rubber roll rotation through transmission mechanism, and said printhead is provided with heat-sensitive sheet near a side of said support;

It is characterized in that:

Said support is provided with locating shaft near a side of said printhead;

Said printhead has support, and a tumbler is installed on the said support through rotating shaft, and said tumbler can rotate around said rotating shaft, and said tumbler has the trip that extends and cooperate with said locating shaft to said support direction;

A sidewall of said tumbler is equipped with pulling piece outward, and said pulling piece is provided with projection near said tumbler one side, and the sidewall of said tumbler is provided with the groove that cooperates with said projection;

Between said support and the said tumbler extension spring is installed, an end of said extension spring is fixed on the said support, and the other end of said extension spring is fixed on the said tumbler.

2. bill printing machine core according to claim 1 is characterized in that:

The quantity of said trip is two, and two said trips lay respectively at the two ends of said tumbler.

3. bill printing machine core according to claim 1 and 2 is characterized in that:

The quantity of said extension spring is more than two or two.

4. bill printing machine core according to claim 1 and 2 is characterized in that:

The middle part of said pulling piece is provided with through hole, and first end of said rotating shaft passes said through hole.

5. bill printing machine core according to claim 4 is characterized in that:

Second end of said rotating shaft stretches out outside the sidewall of said tumbler, and on said second end jump ring is installed.

6. bill printing machine core according to claim 1 and 2 is characterized in that:

Form the paper feed passage between said support and the said printhead; Said paper feed passage is provided with paper feed port and exit slot; Said paper feed port is positioned at the top of said support away from a side of said rubber roll; Said exit slot is positioned at the top of said support near said rubber roll one side, and said exit slot is positioned at the below of said printhead near said heat-sensitive sheet one side.

7. bill printing machine core according to claim 6 is characterized in that:

Said printhead is provided with paper guiding sheet near said exit slot one side, and said paper guiding sheet and said heat-sensitive sheet laterally arrange.

8. bill printing machine core according to claim 6 is characterized in that:

Also be provided with the cut paper cutting knife, said cut paper cutting knife comprises flat knife assembly and slip knife assembly, and it is outer near said exit slot one side that said flat knife assembly is positioned at said printhead, and it is outer near said exit slot one side that said slip knife assembly is positioned at said support;

Be provided with the gap between said flat knife assembly and the said slip knife assembly, said gap is positioned at outside the said exit slot.

9. bill printing machine core according to claim 6 is characterized in that:

Said support is provided with loophole near said paper feed passage one end, and an infrared optic-electric detects technique is installed in said loophole below.

10. bill printing machine core according to claim 9 is characterized in that:

The both sides of said support are provided with from the outward extending erection column of said rack side wall, and the sidewall of said support is provided with the mounting groove that cooperates with said erection column;

The sidewall of said support is equipped with microswitch near said mounting groove place, and when said erection column was installed to said mounting groove, said erection column touched said microswitch.