Double-color thermal printer core

Abstract

The utility model belongs to the technical field of printing equipment, and particularly relates to a double-color thermal printer core, which comprises a shell, a thermal printing assembly, a rubber roller assembly, a driving motor and a transmission mechanism, the number of the thermal printing assemblies is multiple, and the thermal printing assemblies are arranged around the rubber roller assembly. The thermosensitive printing assembly comprises a substrate, a rotating shaft, a spring, a thermosensitive piece and an FPC soft board. The rubber roller assembly comprises a pressure rubber roller and bearings, the pressure rubber roller comprises a center shaft, the two ends of the center shaft are installed on the shell through the bearings, and one side of the pressure rubber roller is connected with a driving motor through a transmission mechanism. According to the thermal printer core disclosed by the utility model, two or more thermal printing assemblies can be integrated in the same shell, namely one core is provided with a plurality of thermal printing assemblies, so that double-color or multi-color printing is realized, and the product is more compact in overall structure, small in size, convenient to carry and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a double-color thermal printer mechanism. Background Art

[0002] Thermal printing is an inkless printing technology that uses the heat-sensitive coating on thermal paper to react chemically at a specific temperature to display images or text. This technology has been widely used in cash registers, receipt printers, portable printers and other equipment. Traditional thermal printers can usually only print a single color, generally black. This single-color printing method limits the visual effect and information expression ability of the printed content, especially when it is necessary to highlight or distinguish related information, a single color cannot achieve the corresponding effect well. For example, when supermarkets, banks, hospitals, etc. print related receipts, they hope to print stamps in red or blue, and print other text in black, so that the stamps are more prominent and easier to distinguish from the text content. With the diversification of commercial activities and the growth of personalized needs, the market demand for thermal printers that can print multiple colors will increase day by day. Although some existing printer products can achieve two-color printing, most of them have complex structures, large volumes and high costs. Therefore, the present application aims to provide a thermal printer mechanism with a simple structure that can achieve the effect of two-color printing. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a two-color thermal printer mechanism, which can realize two-color printing and has a compact structure, a small volume, is easy to carry and has a low cost.

[0004] The technical scheme of the utility model is: a two-color thermal printer mechanism, comprising a shell, a thermal printing assembly, a rubber roller assembly, a driving motor and a transmission mechanism; the shell is used to support and protect other components; there are multiple thermal printing assemblies, and the thermal printing assemblies are arranged around the rubber roller assembly; the thermal printing assembly comprises a substrate, a rotating shaft, a spring, a thermal component and an FPC soft board; one side of the substrate is rotatably installed in the shell through the rotating shaft, the FPC soft board and the thermal component are both installed on the substrate, the spring is arranged between the substrate and the inner wall of the shell, and the spring is used to make the substrate close to the rubber roller assembly; the rubber roller assembly comprises a pressure rubber roller and a bearing, the pressure rubber roller comprises a central axis, and the two ends of the central axis are installed on the shell through bearings, and one side of the pressure rubber roller is connected to the driving motor through the transmission mechanism.

[0005] Furthermore, the housing includes a flat plate and a U-shaped plate, the U-shaped plate includes a bottom surface and two side surfaces, and the three surfaces of the flat plate and the U-shaped plate are all kept perpendicular; the two side surfaces of the U-shaped plate are symmetrically provided with a thermal installation hole and a rubber roller installation hole; the thermal installation hole is used to install the thermal printing component; the rubber roller installation hole is used to install the rubber roller component. Preferably, the flat plate and the U-shaped plate can be integrally formed by a sheet metal process.

[0006] Furthermore, there are two thermistor mounting holes on each side, and the two thermistor mounting holes are arranged in parallel near the bottom of the side, and the rubber roller mounting hole is arranged near the top of the side, so that the rubber roller mounting hole and the two thermistor mounting holes are distributed in a herringbone shape on the side.

[0007] Furthermore, there are two thermal printing components.

[0008] Furthermore, after being installed, the two thermal printing assemblies rotate in the same direction when approaching the rubber roller assembly.

[0009] Furthermore, a transmission mechanism and a driving motor are installed on one side of the U-shaped plate.

[0010] Furthermore, the transmission mechanism is a transmission gear set, a rubber roller gear is arranged at one end of the central axis of the pressure rubber roller, a driving gear is arranged on the output shaft of the driving motor, and the transmission gear set is respectively meshed with the driving gear and the rubber roller gear.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the thermal printing mechanism in the present invention can integrate two or more thermal printing components in the same housing, that is, one mechanism is equipped with multiple thermal components to achieve two-color or multi-color printing. The overall structure of the product is more compact, small in size, easy to carry, and has reduced costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of embodiment 1 of the utility model;

[0013] Figure 2 It is an exploded schematic diagram of Embodiment 1 of the utility model;

[0014] Figure 3 It is a schematic diagram of the housing of Example 1 of the utility model;

[0015] Figure 4 It is an exploded schematic diagram of the thermal printing assembly of Example 1 of the utility model;

[0016] Figure 5 It is an exploded schematic diagram of the rubber roller assembly of Example 1 of the utility model;

[0017] Figure 6It is a schematic diagram of the embodiment 1 of the utility model after omitting the housing;

[0018] In the figure: 1-housing, 11-U-shaped plate, 12-flat plate, 13-thermal mounting hole, 14-rubber roller mounting hole, 2-thermal printing assembly, 21-rotating shaft, 22-spring, 23-base plate, 24-FPC soft board, 25-thermal sensitive part, 3-rubber roller assembly, 31-pressure rubber roller, 32-bearing, 33-rubber roller gear, 4-driving motor, 5-transmission gear set, 6-sensor. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with specific embodiments. Methods or functional components not specifically described in the embodiments are all prior art. Unless otherwise defined, all technical terms and scientific terms used in this document have the same meanings as those generally understood by technicians in this technical field.

[0020] Example 1

[0021] like Figure 1-5 As shown, this embodiment is a two-color thermal printer mechanism, including a housing 1, a thermal printing assembly 2, a rubber roller assembly 3, a drive motor 4 and a transmission mechanism; the housing 1 is used to support and protect other components; there are two thermal printing assemblies 2, and the two thermal printing assemblies 2 are arranged around the rubber roller assembly 3; the thermal printing assembly 2 includes a substrate 23, a rotating shaft 21, a spring 22, a thermal component 25 and an FPC soft board 24; one side of the substrate 23 is rotatably installed in the housing 1 through the rotating shaft 21, and the FPC soft board 24 and the thermal component 25 are both installed On the substrate 23, the thermal sensitive element 25 is used to contact the printing paper to achieve the printing effect on the paper, and the FPC soft board 24 is used to connect the control main board and the sensor 6 and transmit signals; the spring 22 is arranged between the substrate 23 and the inner wall of the shell 1, and the spring 22 is used to make the substrate 23 close to the rubber roller assembly 3; the rubber roller assembly 3 includes a pressure rubber roller 31 and a bearing 32, the pressure rubber roller 31 includes a central axis, and the two ends of the central axis are installed on the shell 1 through bearings 32, and one side of the pressure rubber roller 31 is connected to the drive motor 4 through a transmission mechanism.

[0022] In this embodiment, the housing 1 includes a flat plate 12 and a U-shaped plate 11, wherein the U-shaped plate 11 includes a bottom surface and two side surfaces, and the flat plate 12 and the three surfaces of the U-shaped plate 11 are all kept perpendicular; a thermal installation hole 13 and a rubber roller installation hole 14 are symmetrically arranged on the two side surfaces of the U-shaped plate 11; the thermal installation hole 13 is used to install the thermal printing component 2; and the rubber roller installation hole 14 is used to install the rubber roller component 3. The flat plate 12 and the U-shaped plate 11 are integrally formed by a sheet metal process.

[0023] In this embodiment, there are two thermistor mounting holes 13 on each side, and the two thermistor mounting holes 13 are arranged in parallel near the bottom of the side, and the rubber roller mounting hole 14 is arranged near the top of the side, so that the rubber roller mounting hole 14 and the two thermistor mounting holes 13 are distributed in a herringbone shape on the side.

[0024] In this embodiment, after the two thermal printing assemblies 2 are installed, the rotation directions when they are close to the rubber roller assembly 3 remain the same. A transmission mechanism and a drive motor 4 are installed on one side of the U-shaped plate 11. The transmission mechanism is a transmission gear set 5, a rubber roller gear 33 is arranged at one end of the central axis of the pressure rubber roller 31, and a driving gear is arranged on the output shaft of the drive motor 4, and the transmission gear set 5 is meshed with the driving gear and the rubber roller gear 33 respectively.

[0025] The working process of this embodiment is as follows: when the printing paper is detected by the sensor 6 of the printer mechanism, a signal is sent to the control mainboard of the printer, and the control mainboard sends an instruction to start the drive motor 4, the transmission gear set 5 starts to operate, and drives the pressure glue roller to rotate together, so that the pressure glue roller rubs the printing paper, and the printing paper is sent to the printing point position of the two thermal printing components 2 in turn, and the corresponding content is printed out, such as Figure 6 As described, the printing point positions of the two thermal printing components 2 are respectively in the areas shown in A and B in the figure. The two thermal printing components 2 can print different colors on the printing paper respectively. For example, black content is specially printed in area A, and red content is specially printed in area B. After the two printed contents are merged on the paper, the expected two-color printing effect can be printed.

[0026] The above are only some embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have combinations and modifications of the aforementioned technical features. Without departing from the spirit and scope of the present invention, those skilled in the art may improve, modify, or replace the present invention with equivalents, or apply the structure or method of the present invention to other fields to achieve the same effect, which all fall within the scope of protection of the present invention.

Claims

1. A two-color thermal printer mechanism, characterized in that: It includes a housing, a thermal printing assembly, a rubber roller assembly, a driving motor and a transmission mechanism; The housing is used to support and protect other components; There are multiple thermal printing assemblies, and the thermal printing assemblies are arranged around the rubber roller assembly; the thermal printing assembly includes a substrate, a rotating shaft, a spring, a thermal sensitive component and an FPC soft board; one side of the substrate is rotatably installed in the shell through the rotating shaft, the FPC soft board and the thermal sensitive component are both installed on the substrate, and the spring is arranged between the substrate and the inner wall of the shell, and the spring is used to make the substrate close to the rubber roller assembly; The rubber roller assembly comprises a pressure rubber roller and a bearing. The pressure rubber roller comprises a central shaft, and both ends of the central shaft are mounted on a housing through bearings. One side of the pressure rubber roller is connected to a driving motor through a transmission mechanism.

2. The two-color thermal printer mechanism according to claim 1, characterized in that: The shell includes a flat plate and a U-shaped plate, the U-shaped plate includes a bottom surface and two side surfaces, and the three surfaces of the flat plate and the U-shaped plate are all kept perpendicular; thermal mounting holes and rubber roller mounting holes are symmetrically arranged on the two side surfaces of the U-shaped plate; the thermal mounting holes are used to install the thermal printing assembly; the rubber roller mounting holes are used to install the rubber roller assembly.

3. The two-color thermal printer mechanism according to claim 2, characterized in that: The flat plate is formed integrally with the U-shaped plate.

4. The two-color thermal printer mechanism according to claim 2, characterized in that: There are two thermistor mounting holes on each side, and the two thermistor mounting holes are arranged in parallel near the bottom of the side, and the rubber roller mounting hole is arranged near the top of the side, so that the rubber roller mounting hole and the two thermistor mounting holes are distributed in a herringbone shape on the side.

5. The two-color thermal printer mechanism according to claim 4, characterized in that: There are two thermal printing components.

6. The two-color thermal printer mechanism according to claim 5, characterized in that: After the two thermal printing components are installed, they rotate in the same direction when they are close to the rubber roller component.

7. The two-color thermal printer mechanism according to claim 2, characterized in that: A transmission mechanism and a driving motor are installed on one side surface of the U-shaped plate.

8. The two-color thermal printer mechanism according to claim 1, characterized in that: The transmission mechanism is a transmission gear set.

9. The two-color thermal printer mechanism according to claim 8, characterized in that: A rubber roller gear is arranged at one end of the central axis of the pressure rubber roller, a driving gear is arranged on the output shaft of the driving motor, and a transmission gear set is respectively meshed with the driving gear and the rubber roller gear.

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