CN101898466B

CN101898466B - Ribbon carriage and drive mechanism thereof

Info

Publication number: CN101898466B
Application number: CN2009102138585A
Authority: CN
Inventors: 喻乘龙; 韦孟站
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Print Rite Unicorn Image Products Co Ltd
Priority date: 2009-12-09
Filing date: 2009-12-09
Publication date: 2012-03-14
Anticipated expiration: 2029-12-09
Also published as: CN101898466A

Abstract

The invention provides a ribbon carriage and a drive mechanism thereof. The ribbon carriage comprises a built-in ribbon, a box body provided with two arm parts, a pair of shafts positioned on two sides outside the box body and the drive mechanism consisting of master gear and slave gear, wherein the master gear and the slave gear are mutually meshed; one of the master gear and the slave gear is coaxially provided with a first bevel gear and a swing mechanism; the swing mechanism comprises a shaft supported by the box body; and one end of the shaft is a second bevel gear meshed with the first bevel gear, while the other end is a cam positioned outside the box body. The ribbon carriage has the characteristic of prolonging the service time of ink ribbons, along with simple process.

Description

Ribbon cartridge and driving mechanism thereof

Technical field

The present invention relates to a kind of ribbon cartridge and driving mechanism thereof, specifically, relate to a kind of ribbon cartridge and driving mechanism thereof of impact printer.

Background technology

Impact printer ribbon cartridge commonly used is seen Fig. 1; Generally form by box body, nylon tape (China ink band) and driving mechanism etc.; Driving mechanism often include only master gear 1 that the cobasis plinth is provided with and with its engagement from gear 2, promptly the gear shaft of two gears all is bearing on the box body, the both sides of ribbon cartridge also are provided with a countershaft 3 that cooperates with printer when packing printer into; This kind colour band product is in use according to the difference of nylon tape (China ink band) fit; Can produce two kinds and print traces: referring to Fig. 2, the ribbon cartridge that is assembled into straight band in use, only staying one printhead at black belt surface impacts width regions I; Other area I I does not impact, and the utilization rate of black belt surface printing ink only reaches 30%; Referring to Fig. 3, another kind is the ribbon cartridge product that is assembled into twisted strip, and in use, black belt surface can stay the hitting region I of two road printheads, and other area I I does not still have printhead to impact, and the utilization rate of black belt surface printing ink has also only reached 60%; All have a shortcoming in the above dual mode: the Jimo belt surface is inwhole or also have very big zone all not print; The utilization rate of China ink belt surface printing ink is not high; This type of colour band product is easy to loss even damage after the use of a period of time, needing to cause changing; Therefore life of product is not high, and then has improved production cost; For the utilization rate that improves black belt surface printing ink, prolong life of product be one than hang-up, people had once adopted a lot of methods, but effect is all undesirable.

For addressing the above problem, in publication number is the Chinese invention patent application of CN1186024A a kind of ribbon cartridge that is installed on printer is swingably disclosed.Colour band is housed in this ribbon cartridge, and transmits colour band by walking belt wheel, and this walks belt wheel by the drive shaft that is contained in the printer.When box end arm during along the colour band traverse motion, prints operation at box end arm by printhead with respect to fixing printhead by driving mechanism, make colour band the print zone expansion and be wider than the print span of printhead.This driving mechanism comprises: process the pinion of one with walking belt wheel, and by the cam of pinion driving, and the connecting rod that is connected with cam.This ribbon cartridge can make the relative printhead of colour band swing up and down regularly under action of cam in print procedure, thereby makes colour band be able to obtain fully utilize.Yet, exist its employed specific cam processing difficulties and swing mechanism to be exposed to the outer deficiency of ribbon cartridge.

Summary of the invention

Main purpose of the present invention provides and a kind ofly can improve under the colour band utilization rate prerequisite the simple relatively ribbon cartridge of structure processing;

Another object of the present invention provides the ribbon cartridge that a kind of driving mechanism does not expose basically;

An also purpose of the present invention provides the simple relatively ribbon cartridge driving mechanism of a kind of structure processing.

Be to realize that above-mentioned purpose, ribbon cartridge provided by the invention comprise built-in colour band and be provided with the box body of two arms, and a countershaft that is positioned at the outer both sides of said box body, a driving mechanism that comprises intermeshing master gear, constitutes from gear.Said master gear, be provided with one first bevel gear coaxially from one of gear; Also has a swing mechanism; This swing mechanism comprises an axle by box body supporting, this a end be one with second bevel gear of said first bevel gear engagement, the other end is one to be positioned at the outer cam of said box body.

Visible by above scheme, ribbon cartridge provided by the invention is packed into behind the printer, and cam is rotating in the driving of printer, and cam edge will be resisted against the printer fixed support, thereby the end of ribbon cartridge two arms is swung up and down, and the utilization rate of colour band improves.Simultaneously, each member manufacturing of swing mechanism is simple relatively in this scheme.

Further scheme is that a pair of intermeshing first bevel gear, second bevel gear and axle are arranged in the said box body; Like this; The operator is difficult for touching these parts when printer installation or removal ribbon cartridge, also do not protected these parts fragile and be not vulnerable to pollute.

Another further scheme is that a pair of intermeshing first bevel gear, second bevel gear and axle are arranged on outside the said box body, though this scheme does not have the advantage of a last scheme, helps the existing ribbon cartridge that has used is in a large number transformed.

Scheme further is that with the rotating shaft of box body both sides and the parallel axes setting of axle, the advantage that is arranged in such a way swing mechanism is that the undesirable resistance that in swing process, produces is less relatively.

Ribbon cartridge driving mechanism provided by the invention comprise intermeshing master gear with from gear; Said master gear, be provided with one first bevel gear coaxially from one of gear; Also has a swing mechanism; It comprises one by with said master gear, from the axle that the gear common base is supported, and an end of said axle is second bevel gear that meshes with said first bevel gear, and the other end is a cam.

Visible by above scheme, the camshaft in this ribbon cartridge driving mechanism with master gear, from gear shaft totally one basis, like box body, certainly, this basis can also comprise some equivalents such as support that are fixedly connected with box body.This makes the ribbon cartridge driving mechanism compare with existing ribbon cartridge driving mechanism, many simply constructed swing mechanisms, and its advantage will specify in the specific embodiment part.

Description of drawings

Fig. 1 is the external structure sketch map of existing ribbon cartridge;

Fig. 2 is that the China ink band of existing ribbon cartridge adopts the straight trace figure that prints when assembling that is with;

Fig. 3 is the printing trace figure of the China ink band of existing ribbon cartridge when adopting the twisted strip assembling;

Fig. 4 is the external structure sketch map of ribbon cartridge first embodiment of the present invention;

Fig. 5 is the minor axis and the printer stand state of contact sketch map of the ribbon cartridge first embodiment cam of the present invention, has marked printer stand and the printhead that is not included in the embodiment of the invention with chain-dotted line among the figure;

Fig. 6 is the major axis and the printer stand state of contact sketch map of the ribbon cartridge first embodiment cam of the present invention, has marked printer stand and the printhead that is not included in the embodiment of the invention with chain-dotted line among the figure;

Fig. 7 is that Fig. 5 shows under the state, from the sketch map of the black relatively band of another viewed printhead position;

Fig. 8 is that Fig. 6 shows under the state, from the sketch map of the black relatively band of another viewed printhead position;

After Fig. 9 is to use ribbon cartridge of the present invention to print, the printing trace sketch map on the colour band.

Among the figure:

The hitting region of I-printhead;

The zone that II-is not impacted by printhead;

III-prints the zone that impacts;

1-master gear, 2-be from gear, 3-rotating shaft, 4-first bevel gear, 5-axle, 6-second bevel gear, 7-cam, 8-support, 9-colour band, 10-lid, 11-printhead, 12-printer fixed support.

Below in conjunction with each embodiment and accompanying drawing thereof the present invention is described further.

The specific embodiment

Ribbon cartridge first embodiment:

Referring to Fig. 4; Ribbon cartridge comprise can built-in colour band and be provided with two arms box body, be positioned at the ribbon cartridge driving mechanism that ribbon cartridge is fixed on the rotating shaft 3 on the printer stand and is used to drive colour band of being used for of the outer both sides of ribbon cartridge; This ribbon cartridge driving mechanism comprises intermeshing master gear 1 and from gear 2, lid 10 upper surfaces that are positioned at box body are equipped with a swing mechanism, and this swing mechanism comprises second bevel gear 6, cam 7 and axle 5; Second bevel gear 6 of swing mechanism and first bevel gear, 4 engagements with the coaxial setting of driven gear; To obtain swing power, cam 7 exposes outside box body, and the axis of axle 5 and rotating shaft 3 is arranged in parallel; Wherein, axle 5 is fixed on support 8 supportings of covering 10 upper surfaces by one.

Obviously, according to design of the present invention, first bevel gear 4 also can with master gear 1 coaxial setting, second bevel gear 6 of the swing mechanism that is engaged with can gain impetus and make swing mechanism work equally.

Referring to Fig. 4; Master gear 1 in the driving lower edge of printer arrow A do counterclockwise and rotate; From 2 of gears in the driving lower edge of master gear 1 arrow B do clockwise direction and rotate; Since first bevel gear 4 with are coaxial settings from gear 2, so first bevel gear 4 also moves in the direction of the clock along arrow B; 6 on second bevel gear at axle 5 one ends changes direction by the rotation of arrow C direction under the driving of first bevel gear 4, therefore, cam 7 also rotates by the arrow C direction, thereby realizes that the swing of whole ribbon cartridge and colour band drive.

Below specify the swing operation principle of ribbon cartridge, referring to Fig. 5, the course of work that cam 7 makes ribbon cartridge realize that " sine wave " printed is: during printer work; Cam 7 moves by arrow D clockwise, and at this moment, printer fixed support 12 and ribbon cartridge are except that having a countershaft 3 contacts; Also have a contact point E with cam 7, Fig. 5 illustrates cam 7 minor axises and contact point E state of contact, at this moment; Place the flat-shaped attitude of holder to ribbon cartridge; On printer, be in a level even get ribbon cartridge, printhead 11 is just impacting the partly black on the upper side band of product ink band, referring to Fig. 7.

Referring to Fig. 6, along with the rotation of cam 7, when cam 7 major axis touch printer fixed support 12; Ribbon cartridge will 3 go to peak around the shaft; Thereby partly up move before making whole ribbon cartridge, the colour band 9 that is positioned at the ribbon cartridge band outlet is also corresponding up mobile, makes whole ribbon cartridge form the state of an inclination; The print needle of printhead 11 impacts the lower portion of colour band at this moment, referring to Fig. 8.In cam 7 continuous rotating process, the ribbon cartridge repetitive cycling 3 is swung up and down around the shaft, along with cam 7 major axis and minor axis constantly replace at the E point, printhead 11 on colour band 9, stay " sine wave " to impact trace as shown in Figure 9.

Ribbon cartridge second embodiment:

Ribbon cartridge second embodiment as the present invention; Not existing together with first embodiment is second bevel gear 6 of first bevel gear 4, swing mechanism and the inside that axle 5 is arranged on box body; That is, the zone that is positioned at swing mechanism at Fig. 4 middle cover 10 raises up, and axle 5 support 8 is fixed on and covers 10 lower surface; And then be included in above-mentioned several parts in the box body, and have only cam 7 to be fixed on the end of the axle 5 that stretches out from box side wall.

Obviously, also can be in this example with first bevel gear 4 and master gear 1 coaxial setting, second bevel gear 6 of the swing mechanism that is engaged with can gain impetus and make swing mechanism work equally.

The specific embodiment according to driving mechanism of the present invention is addressed in each embodiment of above ribbon cartridge, below repeats no more.

The invention is not restricted to above-mentioned embodiment, other also should be included in the protection domain of claim of the present invention based on technical scheme of the present invention and without prejudice to the structure and the respective change based on fulcrum of the object of the invention.

Claims

1. ribbon cartridge comprises:

Built-in colour band also is provided with the box body of two arms;

Be positioned at a countershaft (3) of the outer both sides of said box body;

The driving mechanism that comprises intermeshing master gear (1), constitutes from gear (2);

It is characterized in that:

This driving mechanism comprises:

Said master gear (1), be provided with one first bevel gear (4) coaxially from one of gear (2);

One swing mechanism comprises

One axle (5), an end of said axle (5) by the supporting of said box body be one with second bevel gear (6) of said first bevel gear (4) engagement, the other end is one to be positioned at the outer cam (7) of said box body.

2. ribbon cartridge according to claim 1 is characterized in that:

Said first bevel gear (4), second bevel gear (6) and axle (5) are arranged in the said box body.

3. ribbon cartridge according to claim 1 is characterized in that:

Said first bevel gear (4), second bevel gear (6) and axle (5) are arranged on outside the said box body.

4. according to each described ribbon cartridge of claim 1 to 3, it is characterized in that:

The parallel axes of said rotating shaft (3) and said axle (5).

5. ribbon cartridge driving mechanism comprises:

Intermeshing master gear (1) with from gear (2);

It is characterized in that:

One swing mechanism comprises

One by with said master gear (1), from the axle (5) of gear (2) common base supporting, an end of said axle (5) be one with second bevel gear (6) of said first bevel gear (4) engagement, the other end is a cam (7).