CN201494102U

CN201494102U - Thermal transfer printing belt box

Info

Publication number: CN201494102U
Application number: CN2009201943110U
Authority: CN
Inventors: 谢松超; 卢艳; 李向福
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Print Rite Unicorn Image Products Co Ltd
Priority date: 2009-09-03
Filing date: 2009-09-03
Publication date: 2010-06-02
Anticipated expiration: 2019-09-03

Abstract

The utility model provides a thermal transfer printing belt box which comprises a shell with an opening, a cover used for closing the opening and an elastic piece. A belt reeling roll and a roller are rotatably arranged in a cavity formed by the cover and the shell, the roller is sleeved on a roller shaft which is arranged at the bottom of the shell and extends upwards; and the elastic piece is arranged in the thermal transfer printing belt box, and one part of the elastic piece is arranged against the outer edge of one end of the roller near the cover in a mode of being basically vertical to the axial direction of the roller. The utility model has the advantages of greatly simplifying the structure and simple assembly.

Description

The thermal transfer ribbon box

Technical field

The utility model relates to a kind of thermal transfer ribbon box, especially a kind of the thermal transfer ribbon tension structure has been carried out improved thermal transfer ribbon box.

Background technology

The heat transfer type printer will be printed on by thermal transfer ribbon on the medium such as paper for information about, and employing can realize to the thermal transfer ribbon box of printer loading and unloading usually.

A kind of existing thermal transfer ribbon box that Fig. 1, Fig. 2 show is by housing 1 and cover 5 and constitute a cavity, and the cavity bottom is equipped with spring 30, is equipped with take-up roller 4 and chassis 20 rollers 2 and thermal transfer ribbon 3 on spring 30.Thermal transfer ribbon 3 is connected on the take-up roller 4 through three

leads

11,12,13 from roller 2, thermal transfer ribbon 3 is at roller 2 and to four straightways 31,32,33,34 of 4 formation of take-up roller, wherein 33 sections is the workspace, printer when work is that the tension force of retainer belt when take-up roller direction is advanced is constant substantially to 33 sections requirement, promptly will avoid 33 sections and change stretched and relaxedly.For this reason, what existing thermal transfer ribbon box adopted that a spring 30 that is installed in housing 1 bottom controls roller 2 puts the band damping force, principle is that the restoring force of spring 30 is upwards pushed up chassis 20, thereby increase roller 2 upper ends to covering the normal pressure of 5 lower surfaces, obtain a metastable frictional force, like this, when take-up roller 4 rotates take-up, can make the band tensioning.In order better band to be carried out tensioning, also the contact-making surface at

lead

11,12 and band has designed toothed surfaces, to increase frictional resistance, in addition, also is provided with the pressure zone plate 50 by torsion spring 40 controls.

Though existing thermal transfer ribbon box can be controlled the tension force of band well, structure has following deficiency, at first is that member is too much, complex structure; Next is the defective in the manufacture process, and spring 30 is converted into by steel wire, and six knuckles are arranged, and it is accurate to be difficult to controlling dimension during manufacturing; Also have, as shown in Figure 3, Figure 4,35,36,37 sections of spring 30 are close to housing 1 bottom surface, but 38 sections upwarp, need descend pressing spring when installation chassis 20, roller 2 and thermal transfer ribbon 3, closing the lid needed very skilled operation skill at 5 o'clock, and suitable operation easier is promptly arranged.In addition, because the contact-making surface of

lead

11,12 and band is designed to toothed surfaces, the wearing and tearing of sharp-pointed relatively tooth top district meeting accelerated band, the tooth base area also can contamination.

Summary of the invention

Main purpose of the present utility model provides a kind of comparatively simple thermal transfer ribbon box of structure that has;

Another purpose of the present utility model provides a kind of thermal transfer ribbon box easy to assembly of making;

An also purpose of the present utility model provides a kind of thermal transfer ribbon box that can improve the thermal transfer ribbon life-span.

For achieving the above object, the thermal transfer ribbon box that the utility model provides comprises a uncovered housing and seals described uncovered lid, in the chamber that lid and housing constitute, be provided with take-up roller and roller rotationally, roller is sleeved on housing bottom and extends upward on the roller axle of setting.Also have an elastic component that is arranged in the thermal transfer ribbon box, the part of elastic component is pressed on the outer rim of roller near an end of lid in the mode that is basically perpendicular to the roller axis direction.

By above scheme as seen, the relative prior art of the utility model has been saved chassis, pressure zone plate and torsion spring, in addition, removed the spring that roller is applied axial force, adopt one to be arranged on the elastic component of holding and apply power perpendicular to axial direction near lid to roller, like this, not only structure is simplified greatly, roller upwards capable vertically trouble of bringing under the effect of spring restoring force when also having overcome assembling.

A concrete scheme is that elastic component is a steel wire, and the holding of steel wire two ends is on housing, and the steel wire middle part is pressed in the annular ditch groove of roller end outer rim.More particularly an end of steel wire is hook-shaped, and the other end is a straight-bar.During assembling with the holding of steel wire one end elder generation on housing, the middle part is pressed in the annular ditch groove of roller outer rim, the application of force and with other end holding on housing.The dress lid that makes easy for installation is simple relatively.

In addition, the utility model also housing is provided with three leads, and the contact-making surface of each lead and described thermal transfer ribbon is smooth cambered surface.The wearing and tearing of thermal transfer ribbon and the contamination at lead place have been reduced like this, effectively.

Description of drawings

Fig. 1 is a kind of STRUCTURE DECOMPOSITION figure of existing thermal transfer ribbon box;

Fig. 2 be among Fig. 1 existing thermal transfer ribbon box partly cut-away cover structure chart after 5;

Fig. 3 is that the spring 30 of existing thermal transfer ribbon box among Fig. 1 is installed in the state diagram in the housing 1;

Fig. 4 is the stereogram of Fig. 3;

Fig. 5 is the stereogram of the utility model embodiment;

Fig. 6 is the STRUCTURE DECOMPOSITION figure of Fig. 5;

Fig. 7 is that Fig. 5 has cut the structure chart that covers after 5 open;

Fig. 8 is the stereogram of the utility model embodiment housing 1.

Be described further below in conjunction with embodiment of the present utility model and accompanying drawing.

The specific embodiment

Referring to Fig. 5, show that according to an embodiment of the present utility model such as Fig. 5 its housing 1 has a uncovered chamber, uncovered by lid 5 cappings.

Referring to Fig. 6, Fig. 7, take-up roller 4 is arranged between the bottom surface and lid 5 of housing 1 rotationally in cavity, 2 of rollers are enclosed within on the roll shaft 21, also be to be arranged on rotationally between housing 1 and the lid 5, the thermal transfer ribbon 3 that is enclosed within on the roller 2 is back on take-up roller 4 through three

leads

11,12,13, and three

guide rollers

11,12,13 and the contact-making surface of being with are smooth cambered surface.Steel wire 6 as elastic component is L shaped, and a hook end 61 and a straight end 62 are promptly arranged, and stage casing 63 is straightway under unconfined free state.In uncovered being provided with along the limit of housing for a fixing hole 14 and a plate washer 15 of settling steel wire 6 usefulness, show as dotted line among Fig. 7, the line that fixing hole 14 and plate washer are 15 and the diameter of roller intersect, like this, when steel wire being installed between fixing hole 14 and plate washer, steel wire 6 stage casings 63 will be by annular ditch groove 22 bendings of roller 2 upper ends, and the restoring force of steel wire 6 will produce resistance to the rotation of roller 2, thereby make thermal transfer ribbon 3 produce certain force of strain.

Referring to Fig. 8, shell, the nearly plate washer in 1 upper edge 15 other places are provided with a

groove

16, and 15 of groove 16 and plate washers are formed with the opening 17 that enters plate washer 15 for the straight end 62 of steel wire.Plate washer 15 is a L shaped plate of falling that is arranged on housing 1 inwall.

Referring to Fig. 7, during assembling, the housing of packing into after being installed in thermal transfer ribbon on roller and the take-up roller, the hook end of steel wire to be inserted in the fixing hole 14 with roller 2 be fulcrum again shows that to Fig. 7 the right side moves steel wire and directly hold and put into plate washer 15, need not operating personnel and hold with hand steered this moment, can mounting cover 5.

Main design of the present utility model is the end increase frictional force at roller 2 nearly lids 5, thereby produces belt tension.Thereby be not limited in above embodiment; in the simple change on the basis of this design still within the protection domain of the utility model claim; for example other embodiment can also flexible is the spring that a diameter is slightly less than annular ditch groove 22 diameters on the roller 2; this both ends of the spring is fixed on fixing hole 14 places of housing 1 simultaneously; the stage casing is enclosed within the annular ditch groove 22; and be certain extended state; this can produce the frictional force of 2 of spring stage casing and rollers equally, and it is identical with steel wire to effect that band produces tension force.

Claims

1. the thermal transfer ribbon box comprises

Uncovered housing and seal described uncovered lid;

Be arranged on take-up roller and roller in the housing rotationally;

Described roller is sleeved on housing bottom and extends upward on the roller axle of setting;

It is characterized in that:

One is arranged on the elastic component in the described thermal transfer ribbon box, and the part of described elastic component is pressed on the outer rim of described roller near an end of described lid in the mode that is basically perpendicular to described roller axis direction.

2. thermal transfer ribbon box according to claim 1 is characterized in that:

Described elastic component is a steel wire, and the two ends holding of described steel wire is on described housing, and described steel wire middle part is pressed in the annular ditch groove of described roller end outer rim.

3. thermal transfer ribbon box according to claim 2 is characterized in that:

One end of described steel wire is hook-shaped, and the other end is a straight-bar.

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

Described housing is provided with three leads, and the contact-making surface of each lead and described thermal transfer ribbon is smooth cambered surface.

5. according to each described thermal transfer ribbon box of claim 1 to 3, it is characterized in that:

Place, the nearly upper edge of described inner walls is provided with for a fixing hole and a plate washer of settling described elastic component to use, and the line between described fixing hole and described plate washer and the diameter of described roller intersect.

6. thermal transfer ribbon box according to claim 5 is characterized in that:

The other place of the nearly plate washer in described housing upper edge is provided with a groove, is formed with the opening that enters described plate washer for an end of described elastic component between described groove and described plate washer.

7. thermal transfer ribbon box according to claim 6 is characterized in that:

Described plate washer is the L shaped plate of falling that is arranged on the described inner walls.