Double-color thermal transfer ribbon box

Abstract

The utility model discloses a double-color thermal transfer ribbon box which comprises a supply end thermal transfer ribbon shaft, the supply end thermal transfer ribbon shaft is composed of a left shaft sleeve, an inner shaft and a right shaft sleeve, the supply end thermal transfer ribbon shaft is of a cylindrical structure, and an annular rotation stopping protrusion is arranged on the surface of the supply end thermal transfer ribbon shaft. The left shaft sleeve and the right shaft sleeve are arranged on the left side and the right side of the supply end thermal transfer ribbon shaft in a sleeving mode respectively and connected with the friction gasket through the spring, the slip frequency function is achieved through the supply end double-layer rotating shaft structure and the design that the inner shaft and the shaft sleeves are separated, the spring and the friction gasket are combined, the tension difference is automatically adjusted, and loosening and wrinkling of a thermal transfer ribbon are avoided. The double-color thermal transfer ribbons are separated by the opening gaskets at the supply end and the recovery end, so that movement and overlying are prevented; rotation stopping ribs of the end cover are matched with rotation stopping protrusions of the inner shaft to limit rotation deviation, anti-skid lines on the surface of the recycling end rotating shaft enhance rolling friction force, finally independent operation and stable rolling of the double-color thermal transfer ribbon are achieved, the printing quality is remarkably improved, and the service life of equipment is remarkably prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to carbon tape box technical field, concretely relates to a double -colored carbon tape box. BACKGROUND

[0002] Traditional carbon tape box can only accommodate single color carbon tape, cannot satisfy the demand of printing different color labels. In actual use, since double color carbon tape shares a supply end shaft, since the thickness or tightness of different color carbon tapes is different, can cause the winding length to be inconsistent. Cannot automatically slip according to the tension difference of carbon tape, thereby easily causing carbon tape to be loose and wrinkled, even left and right movement, stack together, influence printing definition and stability. SUMMARY

[0003] The utility model solves the technical problem of overcoming the defects of the prior art, and provides a double color carbon tape box to solve the problems in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a double color carbon tape box, including supply end carbon tape shaft, the supply end carbon tape shaft is composed by left shaft sleeve, inner shaft and right shaft sleeve, the supply end carbon tape shaft is cylindrical structure, the surface of supply end carbon tape shaft is provided with annular rotation stop protruding, the left shaft sleeve and right shaft sleeve are respectively set in the left and right sides of supply end carbon tape shaft, and are connected through spring and friction gasket, the outer surfaces of left shaft sleeve and right shaft sleeve are respectively bonded with different color carbon tapes;

[0005] The recovery end carbon tape shaft is a whole shaft structure, and an open gasket is fixed in the middle part to divide the shaft into left and right independent winding areas.

[0006] The end cover is provided with a buckle structure matched with the installation position of the printer, and the end cover is internally provided with a rotation stop rib matched with the rotation stop protrusion of the supply end carbon tape shaft to limit the rotation of the supply end carbon tape shaft.

[0007] The open gasket is arranged between the supply end left shaft sleeve and the right shaft sleeve and in the middle part of the recovery end carbon tape shaft to prevent the carbon tape from moving.

[0008] Preferably, the supply end carbon tape shaft, the left shaft sleeve and the right shaft sleeve are made of high-strength polycarbonate material, and the surface of the supply end carbon tape shaft is polished to have a friction coefficient less than 0.2.

[0009] Preferably, the inner wall of the left shaft sleeve and the right shaft sleeve is provided with an annular groove, one end of the spring is embedded in the groove, and the other end is abutted on the bracket of the end cover to adjust the slip stroke of the left shaft sleeve and the right shaft sleeve through the spring pressure.

[0010] Preferably, the friction pad is made of rubber, and is fixed on both sides of the rotation-stopping protrusion of the supply-end carbon tape shaft and in contact with the inner walls of the left and right shaft sleeves to provide damping force.

[0011] Preferably, the left and right winding areas of the recovery-end carbon tape shaft are provided with anti-skid lines to increase the winding friction of the carbon tape.

[0012] Preferably, the rotation-stopping rib of the end cover is an L-shaped protrusion in staggered engagement with the rotation-stopping protrusion of the supply-end carbon tape shaft to limit the circumferential rotation of the supply-end carbon tape shaft.

[0013] Preferably, the edge of the opening pad is provided with a chamfer structure to reduce the edge friction during the running of the carbon tape.

[0014] Preferably, the end portions of the left and right shaft sleeves of the supply end are respectively provided with positioning bosses, and the opening pad is fixed between the bosses by clamping.

[0015] Preferably, the two ends of the recovery-end carbon tape shaft are provided with bearing grooves to engage with the printer driving gear.

[0016] Preferably, the buckle structure of the end cover comprises symmetrically distributed elastic clamping jaws, and the end of each elastic clamping jaw is provided with a wedge-shaped lock catch to match and lock with the concave part of the printer mounting groove.

[0017] Compared with the prior art, the double-color carbon tape cartridge has the following beneficial effects:

[0018] The double-layer rotating shaft structure of the supply end is designed with the inner shaft separated from the shaft sleeve, and the slip function is realized by combining the spring and the friction pad to automatically adjust the tension difference and avoid the loosening and wrinkling of the carbon tape; the opening pads of the supply end and the recovery end separate the double-color carbon tape to prevent the carbon tape from moving and being overlapped; the rotation-stopping rib of the end cover cooperates with the rotation-stopping protrusion of the inner shaft to limit the rotation deviation, and the anti-skid lines on the surface of the recovery-end rotating shaft enhance the winding friction, so that the double-color carbon tape is independently run and stably wound, and the printing quality and the service life of the equipment are significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation to the present application, and in the drawings:

[0020] Fig. 1 A double-color carbon tape cartridge structure schematic view is provided for the present application;

[0021] Fig. 2 A double-color carbon tape cartridge explosion view is provided for the present application;

[0022] In the diagram: 1. End cap; 2. Spring; 3. Recycle end carbon belt shaft; 4. Opening gasket; 5. Friction gasket; 6. Bracket; 7. Left bushing; 8. Supply end carbon belt shaft; 9. Right bushing. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figs. 1-2 This utility model provides a technical solution: a dual-color ribbon cartridge, including a supply-end ribbon shaft 8, which consists of a left shaft sleeve 7, an inner shaft, and a right shaft sleeve 9. The supply-end ribbon shaft 8 has a cylindrical structure, and an annular anti-rotation protrusion is provided on its surface. The left shaft sleeve 7 and the right shaft sleeve 9 are respectively fitted on the left and right sides of the supply-end ribbon shaft 8 and connected to a friction pad 5 by a spring 2. Different colored ribbons are respectively bonded to the outer surfaces of the left shaft sleeve 7 and the right shaft sleeve 9, ensuring independent supply of dual-color ribbons, avoiding color mixing, and improving printing accuracy and clarity. The rewind-end ribbon shaft 3 is a single rotating shaft structure, with an open pad 4 fixed in the middle, dividing the rotating shaft into independent left and right winding areas, effectively preventing the ribbon from being mixed during the winding process. The movement and overlapping during the process ensure neat winding of the ribbon; the end cap 1 has a buckle structure that matches the printer mounting position, and the end cap 1 has an anti-rotation rib inside. The anti-rotation rib cooperates with the anti-rotation protrusion of the ribbon shaft 8 at the supply end and restricts the rotation of the ribbon shaft 8 at the supply end. The buckle structure ensures a stable connection between the ribbon cartridge and the printer, and the anti-rotation rib further ensures the stable operation of the ribbon during the printing process and avoids the ribbon shifting and misalignment; the open gasket 4 is respectively set between the left shaft sleeve 7 and the right shaft sleeve 9 at the supply end and in the middle of the ribbon shaft 3 at the retraction end. The thickness is 0.5-1.0mm. It is used to prevent the ribbon from moving around. The open gasket effectively separates the two-color ribbon and avoids the ribbon from moving around during the operation, ensuring the clarity and stability of the printing effect.

[0025] In this invention, preferably, the supply-end carbon ribbon shaft 8 and the left and right bushings 7 and 9 are all made of high-strength polycarbonate. The surface of the supply-end carbon ribbon shaft 8 is polished, with a friction coefficient of less than 0.2. The inner walls of the left and right bushings 7 and 9 are provided with annular grooves. One end of the spring 2 is embedded in the groove, and the other end abuts against the bracket 6 of the end cover 1. The slip travel of the left and right bushings 7 and 9 is adjusted by the spring pressure. The friction pad 5 is made of rubber and is fixed to both sides of the anti-rotation protrusion of the supply-end carbon ribbon shaft 8 and contacts the inner walls of the left and right bushings 7 and 9 to provide damping force. The rubber friction pad provides appropriate damping force, further ensuring the stable operation of the carbon ribbon. The surfaces of the left and right winding areas of the take-up carbon ribbon shaft 3 are provided with anti-slip textures. To increase the friction of the carbon ribbon winding, the anti-rotation rib of the end cap 1 is an L-shaped protrusion, which interlocks with the anti-rotation protrusion of the carbon ribbon shaft 8 at the supply end, restricting the circumferential rotation of the carbon ribbon shaft 8 at the supply end. The edge of the open gasket 4 is provided with a chamfered structure to reduce the edge friction of the carbon ribbon during operation. The chamfered structure reduces the edge friction of the carbon ribbon during operation, reduces the wear of the carbon ribbon, and extends the service life of the carbon ribbon. The ends of the left bushing 7 and the right bushing 9 at the supply end are respectively provided with positioning bosses. The open gasket 4 is fixed between the bosses by a snap-fit ​​method. The two ends of the carbon ribbon shaft 3 at the recycle end are provided with bearing grooves that mesh with the printer drive gear. The snap-fit ​​structure of the end cap 1 includes symmetrically distributed elastic claws. The ends of the elastic claws are provided with wedge-shaped latches that match and lock with the recess of the printer mounting slot.

[0026] The working principle and usage process of this utility model are as follows: During installation, align the elastic claws of the end cover 1 with the printer mounting slot and lock them in place using the wedge-shaped latches to ensure the ribbon cartridge is secure. Then, bond the left and right bushings 7 and 9 of the supply-end ribbon shaft 8 to the two-color ribbon respectively, and connect them to the friction pads 5 via spring 2. This creates a slip differential structure between the left and right bushings 7 and 9 on the inner shaft. When there is a difference in ribbon tension, spring 2 compresses or releases, and the friction pads 5 provide damping force, automatically adjusting the bushing position to prevent the ribbon from loosening and wrinkling. During printing, the return-end ribbon... Shaft 3 enhances winding friction with anti-slip texture, while the central open gasket 4 separates the two-color carbon ribbons to prevent them from shifting and overlapping. The anti-rotation rib of end cap 1 engages with the anti-rotation protrusion of the inner shaft to restrict the circumferential rotation of the inner shaft and ensure stable operation of the carbon ribbon. During recycling, the chamfered structure of the open gasket 4 reduces edge friction, and the positioning boss fixes the open gasket 4 to ensure independent winding of the two-color carbon ribbon. Finally, the high-strength polycarbonate material and polished surface reduce wear, and the anti-slip texture and bearing groove work together to improve transmission efficiency, enabling continuous and clear printing of two-color labels and significantly extending the service life of the equipment.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-color ribbon cartridge, comprising a supply-end ribbon shaft (8), characterized in that: The supply end carbon ribbon shaft (8) is composed of a left shaft sleeve (7), an inner shaft and a right shaft sleeve (9). The supply end carbon ribbon shaft (8) has a cylindrical structure. The surface of the supply end carbon ribbon shaft (8) is provided with an annular anti-rotation protrusion. The left shaft sleeve (7) and the right shaft sleeve (9) are respectively sleeved on the left and right sides of the supply end carbon ribbon shaft (8) and connected to the friction pad (5) by a spring (2). The outer surfaces of the left shaft sleeve (7) and the right shaft sleeve (9) are respectively bonded with carbon ribbons of different colors. The carbon ribbon shaft (3) at the recycling end is a whole shaft structure with an open gasket (4) fixed in the middle to divide the shaft into independent left and right winding areas; The end cap (1) is provided with a buckle structure that matches the printer mounting position. The end cap (1) is provided with an anti-rotation rib. The anti-rotation rib cooperates with the anti-rotation protrusion of the supply end carbon ribbon shaft (8) and restricts the rotation of the supply end carbon ribbon shaft (8). Open gaskets (4) are respectively set between the left bushing (7) and the right bushing (9) at the supply end and in the middle of the carbon belt shaft (3) at the recovery end.

2. The dual-color carbon ribbon box according to claim 1, characterized in that: The supply end carbon ribbon shaft (8), left bushing (7), and right bushing (9) are all made of high-strength polycarbonate material, and the surface of the supply end carbon ribbon shaft (8) is polished.

3. A two-color carbon ribbon box according to claim 1, characterized in that: The inner walls of the left bushing (7) and the right bushing (9) are provided with annular grooves. One end of the spring (2) is embedded in the groove, and the other end abuts against the bracket (6) of the end cover (1).

4. A two-color carbon ribbon box according to claim 1, characterized in that: The friction pad (5) is made of rubber. The friction pad (5) is fixed on both sides of the anti-rotation protrusion of the carbon belt shaft (8) at the supply end, and is in contact with the inner wall of the left bushing (7) and the right bushing (9).

5. A two-color carbon ribbon box according to claim 1, characterized in that: The left and right winding areas of the carbon ribbon shaft (3) at the recycling end are provided with anti-slip textures.

6. A two-color carbon ribbon box according to claim 1, characterized in that: The anti-rotation rib of the end cap (1) is an L-shaped protrusion, which interlocks with the anti-rotation protrusion of the carbon belt shaft (8) at the supply end.

7. A two-color carbon ribbon box according to claim 1, characterized in that: The edge of the open gasket (4) is provided with a chamfered structure.

8. A two-color carbon ribbon box according to claim 1, characterized in that: The ends of the left bushing (7) and right bushing (9) of the supply end are respectively provided with positioning bosses, and the open gasket (4) is fixed between the bosses by snap-fit.

9. A two-color carbon ribbon box according to claim 1, characterized in that: The carbon ribbon shaft (3) at the recycling end is provided with bearing grooves at both ends, which mesh with the printer drive gear.

10. A two-color carbon ribbon box according to claim 1, characterized in that: The end cap (1) has a snap-fit ​​structure including symmetrically distributed elastic claws, and the ends of the elastic claws are provided with wedge-shaped latches that match and lock with the recess of the printer mounting slot.

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