Thermal printer

Abstract

The utility model discloses a thermal printer, which belongs to the technical field of thermal printers, and comprises a base, a thermal paper discharge tray, a printer main body and a mounting rack, the surface of the base is provided with the thermal paper discharge tray, one side of the surface of the base is provided with the printer main body, and the printer main body is provided with the mounting rack. Mounting frames are installed on the surface of the base and located between the printer body and the thermo-sensitive paper discharging disc, guide rollers are symmetrically installed between the mounting frames, an adjusting mechanism for adjusting the distance between the guide rollers is installed in the mounting frames, and the adjusting mechanism comprises a two-way lead screw, a moving end and a rotating end. Through the arrangement of the guide rollers and the adjusting mechanism, the distance between the two sets of guide rollers can be flexibly controlled, the guide rollers assist the thermo-sensitive paper to enter the printer in the posture parallel to the input port of the printer, friction between the thermo-sensitive paper and the input port of the printer is avoided, and the stability of the whole printer in use is guaranteed.

Description

A thermal printer Technical Field

[0001] This utility model belongs to the field of thermal printer technology, and specifically relates to a thermal printer. Background Technology

[0002] Thermal printers are one of the many types of printers available today. They mainly rely on the heating of the printing end inside the thermal printer and the interaction with thermal paper. As the temperature of the thermal paper changes, color blocks of corresponding sizes will appear on the heated areas of the thermal paper. By accumulating color blocks and graphic blocks, information can be printed.

[0003] Modern thermal printers use a feed roller to feed the thermal paper into the printer, facilitating operation. However, this method has certain drawbacks. Specifically, when the thermal paper is fed through the output tray, its angle is not parallel to the printer's input port. This causes friction between the paper and the input port, resulting in curling and tearing at the contact point. Ultimately, this reduces the paper's quality and affects the overall performance of the thermal printer. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To address the problems mentioned in the background section, the present invention adopts the following technical solution.

[0006] A thermal printer includes a base, a thermal paper feed tray, a printer body, and a mounting frame. The thermal paper feed tray is mounted on the surface of the base, and the printer body is mounted on one side of the base surface. A mounting frame is mounted on the base surface between the printer body and the thermal paper feed tray. Guide rollers are symmetrically mounted between the mounting frames. An adjustment mechanism for adjusting the spacing between the guide rollers is installed inside the mounting frame. The adjustment mechanism includes a bidirectional lead screw, a moving end, and a rotating end. A housing is symmetrically mounted on the surface of the mounting frame. Two sets of housings are provided. A bidirectional lead screw is rotatably mounted inside one set of housings. A moving end is symmetrically threaded onto the outside of the bidirectional lead screw and connected to the end of the guide roller. A rotating end is mounted on the end of the bidirectional lead screw.

[0007] As a preferred embodiment of the present invention, the adjustment mechanism further includes a sliding rod and a sliding block. The sliding rod is fixedly installed inside the other set of housings, and the sliding block is symmetrically slidably installed outside the sliding rod. The sliding block is connected to the guide roller.

[0008] As a preferred embodiment of this utility model, the guide roller is composed of an enclosing component and a blowing component. Two sets of guide rollers are provided, and the guide rollers are installed between the sliding block and the moving end.

[0009] As a preferred embodiment of this utility model, the blowing assembly includes a fan assembly, a connecting rod, and a connecting line. A connecting rod is installed between the sliding block and the moving end, the fan assembly is installed on the connecting rod, and a connecting line is installed on one side of the end of the connecting rod.

[0010] As a preferred technical solution of this utility model, the enclosure component includes an enclosure plate, an enclosure block, and a mating component. The fan component is fitted with an enclosure plate, and there are two sets of enclosure plates. The enclosure plate surrounds the outside of the fan component. Enclosure blocks are symmetrically installed at the ends of the enclosure plate, and mating components that cooperate with the enclosure blocks are installed on the connecting rod.

[0011] As a preferred technical solution of this utility model, the enclosing block is composed of a rotating shell, a screw, and a nut. The rotating shell is sleeved on the outside of the mating part, the screw is threaded on the rotating shell, and the nut is threaded on the end of the screw.

[0012] As a preferred technical solution of this utility model, the enclosure plate is provided in two sets, and the two sets of enclosure plates are connected to each other to form a complete ring, and multiple sets of ventilation slots are equally spaced on the enclosure plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this invention, by setting guide rollers and an adjustment mechanism, the distance between the two sets of guide rollers can be flexibly controlled, allowing the guide rollers to assist the thermal paper in entering the printer in a parallel position to the printer input port. This avoids friction between the thermal paper and the printer input port, preventing issues such as curling and breakage at the friction points, and ensuring the overall stability of the printer during use. Furthermore, the setting of the blowing component and the enclosure component can stably and safely remove residual impurities from the surface of the thermal paper, ensuring the overall cleanliness of the thermal paper and facilitating accurate printing in subsequent printing processes. Attached Figure Description

[0015] Figure 1 is a perspective view of the overall structure of this utility model.

[0016] Figure 2 is a perspective view of the guide roller and mounting frame structure of this utility model.

[0017] Figure 3 is a perspective view of the adjustment mechanism structure of this utility model.

[0018] Figure 4 is a schematic diagram of the guide roller and adjustment mechanism in this utility model.

[0019] Figure 5 is a structural schematic diagram of the blowing component and the enclosing component in this utility model.

[0020] The correspondence between the labels and component names in the attached figures is as follows:

[0021] 1. Base; 2. Thermal paper feed tray; 3. Printer body; 4. Mounting bracket; 5. Guide roller; 6. Adjustment mechanism; 61. Two-way lead screw; 62. Moving end; 63. Rotating end; 64. Sliding rod; 65. Sliding block; 7. Enclosing assembly; 71. Enclosing plate; 72. Enclosing block; 73. Mating parts; 8. Blowing assembly; 81. Fan assembly; 82. Connecting rod; 83. Connecting lines. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0025] As shown in Figures 1 and 2, which are structural schematic diagrams of the thermal printer in this embodiment, the thermal printer includes a base 1, a thermal paper feed tray 2, a printer body 3, and a mounting frame 4. The thermal paper feed tray 2 is mounted on the surface of the base 1, and the printer body 3 is mounted on one side of the surface of the base 1. The mounting frame 4 is mounted on the surface of the base 1 and located between the printer body 3 and the thermal paper feed tray 2. Guide rollers 5 are symmetrically mounted between the mounting frames 4, and an adjustment mechanism 6 for adjusting the spacing of the guide rollers 5 is installed inside the mounting frame 4.

[0026] The thermal paper feed tray 2, on which the thermal paper to be transported is placed, is placed on the base 1. Then, the thermal paper on the outside of the thermal paper feed tray 2 is wound up by the operation of the printer body 3. The thermal paper is heated by the heating component inside the printer body 3, and the image on the thermal paper is displayed to realize the printing of information.

[0027] As shown in Figures 3 and 4, which are schematic diagrams of the adjustment mechanism 6 in this embodiment, the adjustment mechanism 6 includes a bidirectional lead screw 61, a moving end 62, a rotating end 63, a sliding rod 64, and a sliding block 65. The mounting frame 4 has a shell symmetrically mounted on its surface. There are two sets of shells. One set of shells has a bidirectional lead screw 61 rotatably mounted inside, and a moving end 62 symmetrically threaded on the outside of the bidirectional lead screw 61. The moving end 62 is connected to the end of the guide roller 5. The rotating end 63 is mounted on the end of the bidirectional lead screw 61. The other set of shells has a sliding rod 64 fixedly mounted inside, and a sliding block 65 symmetrically slidably mounted on the outside of the sliding rod 64. The sliding block 65 is connected to the guide roller 5.

[0028] Based on the angle and position of the thermal paper feed, the rotating end 63 is rotated. At this time, the bidirectional lead screw 61 rotates inside the housing. The moving end 62 installed outside the bidirectional lead screw 61 moves along the integral thread of the bidirectional lead screw 61. At this time, the two sets of moving ends 62 drive the overall position of the guide roller 5 to move, controlling the position of the guide roller 5. The central axis of the two sets of guide rollers 5 is at the same horizontal height as the input port of the printer body 3, so that the thermal paper input into the printer body 3 is attached between the two sets of guide rollers 5 and input into the printer body 3, ensuring the stability of the input thermal paper.

[0029] As shown in Figure 5, the guide roller 5 consists of an enclosure component 7 and a blowing component 8. There are two sets of guide rollers 5. The guide roller 5 is installed between the sliding block 65 and the moving end 62. The blowing component 8 includes a fan component 81, a connecting rod 82 and a connecting line 83. A connecting rod 82 is installed between the sliding block 65 and the moving end 62. The fan component 81 is installed on the connecting rod 82. A connecting line 83 is installed on one side of the end of the connecting rod 82.

[0030] As the thermal paper is conveyed between the two sets of guide rollers 5, the fan assembly 81 performs stable cleaning of the exterior of the thermal paper, blowing away impurities and dust on the thermal paper to ensure the overall cleanliness of the thermal paper, making it easier for the printer body 3 to input the required information onto the thermal paper.

[0031] As shown in Figure 5, the enclosure component 7 includes an enclosure plate 71, an enclosure block 72, and a mating component 73. The fan assembly 81 is fitted with an enclosure plate 71. There are two sets of enclosure plates 71. The enclosure plates 71 enclose the outside of the fan assembly 81. Enclosure blocks 72 are symmetrically installed at the ends of the enclosure plates 71. The connecting rod 82 is equipped with a mating component 73 that mates with the enclosure block 72.

[0032] Two sets of enclosing plates 71 are fitted onto the outside of the fan assembly 81. At this time, the enclosing block 72 is installed on the outside of the mating part 73, realizing the rapid positioning of the two sets of enclosing plates 71. This facilitates the subsequent enclosing plates 71 to form a complete circular structure, which is convenient for the enclosing plates 71 to be calibrated and transported for the thermal paper. Furthermore, the cooperation between the enclosing block 72 and the mating part 73 ensures that the enclosed circular structure will roll as the thermal paper is transported, thus ensuring the stability of the transport.

[0033] As shown in Figure 5, the enclosing block 72 is composed of a rotating shell, a screw, and a nut. The rotating shell is sleeved on the outside of the mating part 73. The screw is threaded on the rotating shell, and the nut is threaded on the end of the screw. There are two sets of enclosing plates 71. The two sets of enclosing plates 71 are connected to each other to form a complete ring. Multiple sets of ventilation slots are equally spaced on the enclosing plates 71.

[0034] The rotating shell is fitted onto the outside of the mating part 73. At this time, the rotating shell rotates along the outside of the mating part 73. Then, the position of the rotating shell is locked by the use of screws and nuts. The ventilation openings on the outside of the enclosure plate 71 facilitate the air generated by the fan assembly 81 to pass through the enclosure plate 71 to treat the dust and impurities on the surface of the thermal paper.

[0035] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A thermal printer, comprising a base (1), a thermal paper feed tray (2), a printer body (3), and a mounting bracket (4), wherein the thermal paper feed tray (2) is mounted on the surface of the base (1), the printer body (3) is mounted on one side of the surface of the base (1), and the mounting bracket (4) is mounted on the surface of the base (1) and located between the printer body (3) and the thermal paper feed tray (2), characterized in that: Guide rollers (5) are symmetrically installed between the mounting frames (4). An adjustment mechanism (6) for adjusting the spacing of the guide rollers (5) is installed inside the mounting frame (4). The adjustment mechanism (6) includes a bidirectional lead screw (61), a moving end (62), and a rotating end (63). A housing is symmetrically installed on the surface of the mounting frame (4). There are two sets of housings. A bidirectional lead screw (61) is rotatably installed inside one set of housings. A moving end (62) is symmetrically threaded on the outside of the bidirectional lead screw (61). The moving end (62) is connected to the end of the guide roller (5). A rotating end (63) is installed at the end of the bidirectional lead screw (61).

2. The thermal printer according to claim 1, characterized in that: The adjustment mechanism (6) further includes a sliding rod (64) and a sliding block (65). Another set of the housing is fixedly installed with the sliding rod (64), and the sliding block (65) is symmetrically slidably installed on the outside of the sliding rod (64). The sliding block (65) is connected to the guide roller (5).

3. The thermal printer according to claim 2, characterized in that: The guide roller (5) consists of an enclosure assembly (7) and a blowing assembly (8). There are two sets of guide rollers (5), which are installed between the sliding block (65) and the moving end (62).

4. The thermal printer according to claim 3, characterized in that: The blowing assembly (8) includes a fan assembly (81), a connecting rod (82) and a connecting line (83). A connecting rod (82) is installed between the sliding block (65) and the moving end (62). The fan assembly (81) is installed on the connecting rod (82), and a connecting line (83) is installed on one side of the end of the connecting rod (82).

5. The thermal printer according to claim 4, characterized in that: The enclosure component (7) includes an enclosure plate (71), an enclosure block (72), and a fitting component (73). The fan assembly (81) is fitted with an enclosure plate (71). There are two sets of enclosure plates (71). The enclosure plates (71) enclose the fan assembly (81). Enclosure blocks (72) are symmetrically installed at the ends of the enclosure plates (71). Fitting components (73) that cooperate with the enclosure blocks (72) are installed on the connecting rod (82).

6. The thermal printer according to claim 5, characterized in that: The enclosing block (72) consists of a rotating shell, a screw, and a nut. The mating part (73) is fitted with a rotating shell on the outside. A screw is threaded onto the rotating shell, and a nut is threaded onto the end of the screw.

7. The thermal printer according to claim 6, characterized in that: The enclosure plate (71) is provided in two sets. The two sets of enclosure plates (71) are connected to each other to form a complete ring, and multiple sets of ventilation slots are equally spaced on the enclosure plate (71).

Images