CN219523405U

CN219523405U - Printing head pressure self-balancing mechanism of label printer

Info

Publication number: CN219523405U
Application number: CN202320375126.1U
Authority: CN
Inventors: 柳雄; 牟伦亮
Original assignee: Wuhan Jingchen Wisdom Logo Technology Co ltd
Current assignee: Wuhan Jingchen Wisdom Logo Technology Co ltd
Priority date: 2023-03-03
Filing date: 2023-03-03
Publication date: 2023-08-15
Anticipated expiration: 2033-03-03

Abstract

The utility model discloses a printing head pressure self-balancing mechanism of a label printer, which comprises: the printing head force application mechanism is in contact with the spring top plate, so that the spring top plate can move towards the spring bottom plate, the spring is arranged between the spring top plate and the spring bottom plate, one end of the spring is in contact with the spring top plate, the other end of the spring is in contact with the spring bottom plate, the spring bottom plate is connected with the first rotating shaft, the printing head is fixedly connected with the heat dissipation plate, and the heat dissipation plate is sleeved on the first rotating shaft and can rotate around the first rotating shaft. The utility model can keep the pressure of the printing head pressed at the two ends of the rubber roller to be balanced in the printing process.

Description

Printing head pressure self-balancing mechanism of label printer

Technical Field

The utility model belongs to the field of label printers, and particularly relates to a printing head pressure self-balancing mechanism of a label printer.

Background

The label refers to the literal, graphic and symbol on the product and all the explanatory matters. Label printers are used to print labels, and include both thermal label printers and heat transfer label printers. Whatever kind of label printer all includes structures such as print head and rubber roll, when printing, print the head and press on the rubber roll, thereby label paper, carbon ribbon pass through between print head and the rubber roll, and motor drive rubber roll rotates and realizes the printing process.

In the printing process, the pressure of the printing head at two ends of the rubber roller needs to be kept balanced, otherwise, part of labels can be printed clearly easily, and the other part of labels can be printed in an unclear way, so that the printing quality is affected. In addition, with thermal transfer label printers, if the pressure of the print head against the two ends of the glue roller is not balanced, wrinkling of the carbon tape is also easily caused.

Disclosure of Invention

Aiming at the defects or improvement demands of the prior art, the utility model provides a printing head pressure self-balancing mechanism of a label printer, which can ensure that the pressure of the printing head pressed at two ends of a rubber roller is balanced in the printing process.

The utility model relates to a print head pressure self-balancing mechanism of a label printer, comprising: the printing head comprises a printing head force application mechanism, an elastic piece, a first rotating shaft, a heat dissipation plate, a printing head and a rubber roller, wherein the elastic piece comprises a spring top plate, a spring bottom plate and a spring, the printing head force application mechanism is in contact with the spring top plate to apply force to the spring top plate, the spring top plate can move towards the spring bottom plate, the spring is arranged between the spring top plate and the spring bottom plate and is in a compressed state, one end of the spring is in contact with the spring top plate, the other end of the spring is in contact with the spring bottom plate, the spring bottom plate is connected with the first rotating shaft, the printing head is fixedly connected with the heat dissipation plate, and the heat dissipation plate is sleeved on the first rotating shaft and can rotate around the first rotating shaft to adjust the pressure of the contact position of the printing head and the rubber roller.

Further, the print head force application mechanism comprises a cam shaft and a cam, wherein the cam shaft is fixed to the shell of the label printer, and the cam is sleeved on the cam shaft.

Further, the springs comprise a first spring and a second spring, and the first spring and the second spring are distributed on two sides of the axis of the first rotating shaft.

Further, the self-balancing mechanism for pressure of the printing head further comprises a second rotating shaft, the spring top plate comprises a top plate and first side plates on two sides of the top plate, the spring bottom plate comprises a bottom plate and second side plates on two sides of the bottom plate, through holes are formed in the first side plates and the second side plates, the second rotating shaft penetrates through the through holes in the first side plates and the second side plates and is fixed on a shell of the label printer, the elastic piece can rotate around the second rotating shaft and drive the heat dissipation plate to rotate, limit protruding portions are arranged on the heat dissipation plate, limit holes are formed in the label printer, and the limit protruding portions can move on paths defined by the limit holes.

Further, the rubber roll comprises a rubber roll shaft, and a limiting clamping groove used for limiting the rubber roll shaft is formed in the heat dissipation plate.

Further, the first rotating shaft axis is perpendicular to the rubber roll shaft axis.

In general, compared with the prior art, the pressure applied by the printing head force application mechanism is not directly applied to the heat dissipation plate, but is applied to the elastic piece, so that the position of the first rotating shaft is changed, the heat dissipation plate is sleeved on the first rotating shaft and can rotate around the first rotating shaft, and therefore the printing head can be driven to rotate around the first rotating shaft, a certain adjusting space is provided for the position of the printing head, the pressure of the printing head at two ends of the rubber roller can be adaptively adjusted, the pressure of the printing head at two ends of the rubber roller in the printing process is ensured to be balanced, the printing quality is improved, and the phenomenon that the carbon ribbon is wrinkled is avoided.

Drawings

FIG. 1 is a schematic perspective view of a printhead pressure self-balancing mechanism according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a printhead pressure self-balancing mechanism according to an embodiment of the utility model;

FIG. 3 is a schematic perspective view of another angle of a printhead pressure self-balancing mechanism according to an embodiment of the present utility model;

the same reference numbers are used throughout the drawings to reference like elements or structures, wherein: 1. a printhead force applying mechanism; 2. an elastic member; 3. a first rotating shaft; 4. a heat dissipation plate; 5. a print head; 6. a rubber roller; 7. a spring top plate; 8. a spring base plate; 9. a spring; 10. a cam shaft; 11. a cam; 12. a second rotating shaft; 13. a first side plate; 14. a second side plate; 15. a rubber roll shaft; 16. and a limit clamping groove.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, the terms "mounted," "connected," "secured," and the like are to be construed broadly unless otherwise specifically indicated and defined. For example, "connected" may be either fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1 and 2, a print head pressure self-balancing mechanism of a label printer of the present utility model includes: the printing head force application mechanism 1, the elastic piece 2, the first rotating shaft 3, the heat dissipation plate 4, the printing head 5 and the rubber roller 6. The elastic member 2 includes a spring top plate 7, a spring bottom plate 8, and a spring 9.

The print head urging mechanism 1 is in contact with the spring top plate 7 to urge the spring top plate 7 so that the spring top plate 7 can move toward the spring bottom plate 8. The spring is arranged between the spring top plate 7 and the spring bottom plate 8 and is in a compressed state, one end of the spring is in contact with the spring top plate 7, the other end of the spring is in contact with the spring bottom plate 8, and the spring bottom plate 8 is connected with the first rotating shaft 3. When the print head force application mechanism 1 applies pressure to the spring top plate 7, the pressure is transmitted to the spring bottom plate 8 through the spring, and the position of the spring bottom plate 8 is changed, so that the position of the first rotating shaft 3 is changed.

The printing head 5 is mounted on the heat dissipation plate 4, and the heat dissipation plate 4 is sleeved on the first rotating shaft 3 and can rotate around the first rotating shaft 3 so as to adjust the pressure at the contact position of the printing head 5 and the rubber roller 6. In this embodiment, the heat dissipation plate 4 is not directly fixedly connected with the spring base plate 8, but is connected with the first rotating shaft 3, and the heat dissipation plate 4 can drive the print head 5 to rotate around the first rotating shaft 3, so that the position of the print head 5 has a certain adjustment space. Therefore, the pressure of the printing head 5 pressed at the two ends of the rubber roller 6 can be adaptively adjusted, the pressure balance of the printing head 5 pressed at the two ends of the rubber roller 6 in the printing process is ensured, and the printing quality is improved. For thermal transfer label printers, wrinkling of the carbon tape can also be avoided.

Further, the axis of the first rotating shaft 3 is perpendicular to the axis of the rubber roller 6.

Further, the print head force applying mechanism 1 includes a cam shaft 10 and a cam 11, the cam shaft 10 is disposed in the housing of the label printer, and the cam 11 is sleeved on the cam shaft 10. The cam 11 contacts the spring top plate 7 to apply a force to the spring top plate 7.

Further, the springs comprise a first spring and a second spring, and the first spring and the second spring are distributed on two sides of the axis of the first rotating shaft 3, so that pressure balance on two sides of the first rotating shaft 3 can be ensured. The number of springs can be adjusted according to actual needs.

Further, the print head pressure self-balancing mechanism further comprises a second rotating shaft 12, the spring top plate 7 comprises a top plate and a first side plate 13 on two sides of the top plate, the spring bottom plate 8 comprises a bottom plate and a second side plate 14 on two sides of the bottom plate, through holes are formed in the first side plate 13 and the second side plate 14, the second rotating shaft 12 penetrates through the through holes in the first side plate 13 and the second side plate 14 and is fixed on a shell of the label printer, the elastic piece 2 can rotate around the second rotating shaft 12 and drive the heat dissipation plate 4 to rotate, a limit protruding portion is arranged on the heat dissipation plate 4, a limit hole is formed in the label printer, and the limit protruding portion can move on a path defined by the limit hole. The limiting hole may be a long hole.

The elastic piece 2, the heat dissipation plate 4, the first rotating shaft 3 and the printing head 5 can rotate around the second rotating shaft 12 as a whole, and the rotation of the printing head 5 is limited in a limited space due to the cooperation of the limiting protruding part and the limiting hole, so that the printing head 5 is contacted with and separated from the rubber roller 6.

Further, the rubber roll 6 includes a rubber roll shaft 15, and a limiting slot 16 for limiting the rubber roll shaft 15 is provided on the heat dissipation plate 4.

In the printing process, besides realizing the pressure balance between the printing head 5 and the rubber roller 6, the printing line on the printing head 5 needs to be limited, if the printing line deviates from the preset position, printing is unclear, and the printing content is possibly inclined. Therefore, in this embodiment, when the print head 5 contacts with the glue roller 6, the limiting slot 16 limits the glue roller shaft 15, so as to ensure that the relative position between the print head 5 and the glue roller 6 is fixed, and further ensure that the print line is fixed at a preset position.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. A printhead pressure self-balancing mechanism for a label printer, comprising: the printing head comprises a printing head force application mechanism, an elastic piece, a first rotating shaft, a heat dissipation plate, a printing head and a rubber roller, wherein the elastic piece comprises a spring top plate, a spring bottom plate and a spring, the printing head force application mechanism is in contact with the spring top plate to apply force to the spring top plate, so that the spring top plate can move towards the spring bottom plate, the spring is arranged between the spring top plate and the spring bottom plate and is in a compressed state, one end of the spring is in contact with the spring top plate, the other end of the spring is in contact with the spring bottom plate, the spring bottom plate is connected with the first rotating shaft, the printing head is fixedly connected with the heat dissipation plate, and the heat dissipation plate is sleeved on the first rotating shaft and can rotate around the first rotating shaft.

2. The printhead pressure self-balancing mechanism of claim 1, wherein the printhead force applying mechanism comprises a cam shaft and a cam, the cam shaft being disposed in a housing of the label printer, the cam being sleeved on the cam shaft.

3. The printhead pressure self-balancing mechanism of claim 1, wherein the springs comprise a first spring and a second spring, the first spring and the second spring being distributed on either side of an axis of the first shaft.

4. The print head pressure self-balancing mechanism according to claim 1, further comprising a second rotating shaft, wherein the spring top plate comprises a top plate, first side plates on two sides of the top plate, the spring bottom plate comprises a bottom plate and second side plates on two sides of the bottom plate, through holes are formed in the first side plates and the second side plates, the second rotating shaft penetrates through the through holes in the first side plates and the second side plates and is fixed to a casing of the label printer, the elastic piece can rotate around the second rotating shaft and drive the heat dissipation plate to rotate, a limit protrusion is arranged on the heat dissipation plate, a limit hole is formed in the casing of the label printer, and the limit protrusion can move on a path defined by the limit hole.

5. The printhead pressure self-balancing mechanism of claim 1, wherein the glue roller includes a glue roller shaft, and the heat dissipation plate is provided with a limit clamping groove for limiting the glue roller shaft.

6. The printhead pressure self-balancing mechanism of claim 1, wherein said first spool axis is perpendicular to said glue roller axis.