Thermal printer with paper pressing and feeding functions

Abstract

The utility model discloses a thermal printer with paper pressing and feeding functions, which comprises a printer body, a mounting roller is arranged in the printer body, mounting assemblies are arranged on two sides of the outside of the mounting roller, and a paper pressing and feeding assembly is arranged at the rear of the inside of the printer body. The mounting assembly comprises a first motor and an electric telescopic rod; the paper pressing and feeding assembly comprises a rectangular groove, a connecting piece and an installing piece, a rectangular piece is arranged in the rectangular groove in a sliding mode, and a plurality of paper pressing rollers are rotatably arranged on the inner side of the installing piece. The multiple paper pressing rollers rotate at the same time, so that the paper pressing rollers are attached to the paper materials all the time, the situation that when the paper materials are conveyed too fast, a paper material roll is loosened can be effectively avoided, the multiple paper pressing rollers rotate at the same time, the paper materials are conveyed, and abrasion caused during conveying is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to thermal printer technical field, concretely is a kind of thermal printer with paper pressing paper feeding function. BACKGROUND

[0002] Thermal printer is a kind of equipment by thermal technology to print, without ink or carbon tape, reduce consumable cost and maintenance annoyance. Thermal printer is mainly composed of thermal print head, pressing plate, spring, thermal paper etc., is to use the heating element on print head to contact thermal paper, according to printing information control heating element instantaneous heat release, make thermal paper heat discoloration, form dot-matrix character and figure. It is widely used in printing, bar code, label, electrocardiogram etc., is suitable for commercial cash register, bank POS machine, various receipt printing scene etc.

[0003] The existing thermal printer needs to place paper roll on the placing roller inside the printer when using, and a paper pressing structure is arranged to press the paper roll, but when the thermal printer is used, since the paper roll is continuously guided out, the paper pressing structure will cause a certain degree of friction to the paper roll when guiding, and the paper roll will continuously thin, when thin to a certain degree, the paper pressing structure cannot contact the paper roll, at this time, if the paper roll guiding speed is fast, the internal paper roll is prone to looseness, that is, paper jam etc. Condition can occur. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of thermal printer with paper pressing paper feeding function to solve the problems presented in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of thermal printer with paper pressing paper feeding function, including printer body, the printer body is internally provided with installation roller, the installation roller outside both sides are provided with installation assembly, the printer body is internally provided with paper pressing paper feeding assembly behind;

[0007] Installation assembly includes first motor and electric telescopic rod;

[0008] Paper pressing paper feeding assembly includes rectangular groove, connecting piece, mounting piece, the rectangular groove is internally provided with rectangular piece sliding, the mounting piece is internally provided with a plurality of paper pressing rollers rotationally;

[0009] In a preferred embodiment of the utility model, the installation roller is provided with external thread, the external thread is provided with limit disc, the limit disc is screw thread connection with external thread.

[0010] In a preferred embodiment of the utility model, first hexagonal bolt and second hexagonal groove are arranged on both sides of the installation roller, first hexagonal groove is arranged on the first motor drive shaft, and the first hexagonal bolt is disassembled in the first hexagonal groove.

[0011] In a preferred embodiment of the utility model, annular groove is arranged on the electric telescopic rod, rotating part is rotatably arranged in the annular groove, second hexagonal bolt is arranged on the rotating part, and the second hexagonal bolt is disassembled on the second hexagonal groove.

[0012] In a preferred embodiment of the utility model, threaded rod is arranged below the inside of the rectangular groove, second motor is arranged on one side of the outside of the rectangular groove, the threaded rod is connected with the second motor drive shaft, threaded pipe is arranged on the bottom of the rectangular part, and the threaded rod is screw connected with the threaded pipe.

[0013] In a preferred embodiment of the utility model, electric push rod is arranged on the rectangular part, and the electric push rod is connected with the connecting piece.

[0014] In a preferred embodiment of the utility model, the connecting piece is slidably connected with the mounting piece, spring is arranged behind the mounting piece, and the spring is connected with the connecting piece.

[0015] In a preferred embodiment of the utility model, a plurality of synchronous wheels are arranged on the outside of the paper pressing roller, and the plurality of synchronous wheels are engaged through the synchronous belt.

[0016] In a preferred embodiment of the utility model, third motor is arranged on one side of the top of the mounting piece, drive gear is arranged on the third motor drive shaft, driven gear is arranged on one side of the top of the paper pressing roller, and the drive gear is engaged with the driven gear.

[0017] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the utility model.

[0018] Beneficial effect: the connecting piece is pushed by the electric push rod, so that the paper pressing roller is pressed on the paper material, that is, the paper is pressed, and when the paper material is conveyed, the mounting piece is pushed by the spring, so that the paper pressing roller is always attached to the paper material, that is, the situation that the paper material roll is loose when the paper material is conveyed too fast can be effectively avoided, the drive gear is rotated by the third motor, the top paper pressing roller is rotated by gear transmission, and the plurality of paper pressing rollers are simultaneously rotated by the synchronous wheel and the synchronous belt transmission, that is, the paper material is conveyed, and the abrasion caused by conveying is effectively reduced.

[0019] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the main structure of a thermal printer with paper pressing and feeding function;

[0022] Figure 2 This is a schematic diagram of the installation components in a thermal printer with paper pressing and feeding function.

[0023] Figure 3 This is a schematic diagram of the paper pressing and feeding assembly in a thermal printer with a paper pressing and feeding function.

[0024] Figure 4 This is a schematic diagram of the mounting structure in a thermal printer with paper pressing and feeding function;

[0025] Figure 5 This is a schematic diagram of the paper pressure roller structure in a thermal printer with paper pressing and feeding function.

[0026] In the diagram: 1. Printer body; 11. Mounting roller; 12. External thread; 13. Limiting plate; 14. First hexagonal bolt; 15. Second hexagonal slot; 2. First motor; 21. First hexagonal slot; 22. Electric telescopic rod; 23. Annular groove; 24. Rotating component; 25. Second hexagonal bolt; 3. Rectangular slot; 31. Rectangular component; 32. Threaded rod; 33. Second motor; 34. Threaded tube; 35. Electric push rod; 4. Connecting component; 41. Spring; 42. Third motor; 43. Drive gear; 44. Mounting component; 45. Paper pressure roller; 5. Synchronous pulley; 51. Driven gear. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] Please refer to Figures 1-5This utility model discloses a thermal printer with paper pressing and feeding function, including a printer body 1, an installation roller 11 inside the printer body 1, the printer body 1 being a thermal printer, the installation roller 11 being used to install and place the printing paper roll, the installation roller 11 being provided with an external thread 12, the external thread 12 being provided with a limiting disk 13, the limiting disk 13 being threadedly connected to the external thread 12, after the paper roll is placed, the paper roll is pushed by rotating the outer limiting disk 13 on the external thread 12, that is, the position of the paper roll is locked.

[0029] Mounting roller 11 is equipped with mounting components on both sides of its exterior. The mounting components include a first motor 2 and an electric telescopic rod 22. A first hexagonal bolt 14 and a second hexagonal groove 15 are respectively provided on both sides of the mounting roller 11. The first hexagonal groove 21 is provided on the drive shaft of the first motor 2. The first hexagonal bolt 14 is installed and removed in the first hexagonal groove 21. The electric telescopic rod 22 is provided with an annular groove 23. A rotating part 24 is rotatably provided inside the annular groove 23. The rotating part 24 is locked inside the annular groove 23 and rotates. A second hexagonal bolt 25 is provided on the rotating part 24. The second hexagonal bolt 25 is installed and removed from the second hexagonal groove 15. That is, the first hexagonal bolt 14 connects to the first hexagonal groove 21, and the second hexagonal bolt 25 is rotated to align with the second hexagonal groove 15. The electric telescopic rod 22 pushes the second hexagonal bolt 25 to connect with the second hexagonal groove 15, thus completing the fixation of the mounting roller 11. The first motor 2 rotates to transport the paper material.

[0030] A paper pressing and feeding assembly is located at the rear of the printer body 1. The paper pressing and feeding assembly includes a rectangular groove 3, a connector 4, and a mounting component 44. A rectangular component 31 is slidably arranged inside the rectangular groove 3. Multiple paper pressing rollers 45 are rotatably arranged inside the mounting component 44. An electric push rod 35 is provided on the rectangular component 31. The electric push rod 35 is connected to the connector 4. The connector 4 and the mounting component 44 are slidably connected. A spring 41 is provided behind the mounting component 44. The spring 41 is connected to the connector 4. That is, the electric push rod 35 pushes the connector 4, so that the paper pressing rollers 45 press on the paper, that is, paper pressing is performed. When the paper is being fed, the spring 41 pushes the mounting component 44, so that the paper pressing rollers 45 are always in contact with the paper, which can effectively prevent the paper roll from becoming loose when the paper is fed too fast.

[0031] A threaded rod 32 is provided on the lower inner side of the rectangular groove 3, and a second motor 33 is provided on the outer side of the rectangular groove 3. The drive shaft of the second motor 33 is connected to the threaded rod 32. A threaded tube 34 is provided at the bottom of the rectangular part 31. The threaded rod 32 and the threaded tube 34 are threadedly connected. That is, the second motor 33 drives the threaded rod 32 to rotate, so that the rectangular part 31 slides in the rectangular groove 3. This allows for adjustment according to the position of the paper material, making it convenient to use.

[0032] Synchronous pulleys 5 are provided on the outer side of multiple paper pressing rollers 45. The multiple synchronous pulleys 5 are meshed by a synchronous belt. A third motor 42 is provided on one side of the top of the mounting component 44. A drive gear 43 is provided on the drive shaft of the third motor 42. A driven gear 51 is provided on one side of the top paper pressing roller 45. The drive gear 43 meshes with the driven gear 51, that is, the third motor 42 drives the drive gear 43 to rotate. Through gear transmission, the top paper pressing roller 45 rotates. Through the synchronous pulleys 5 and the synchronous belt, the multiple paper pressing rollers 45 rotate simultaneously, that is, the paper material is conveyed, effectively reducing the wear caused during conveying.

[0033] The working principle of this utility model is as follows: The mounting roller 11 installs and places the printing paper roll. After the paper roll is placed, the outer limiting plate 13 rotates on the external thread 12, thereby pushing the paper roll and locking it in place. The first hexagonal bolt 14 connects to the first hexagonal slot 21, and the second hexagonal bolt 25 is rotated to align with the second hexagonal slot 15. The electric telescopic rod 22 pushes the second hexagonal bolt 25 to connect with the second hexagonal slot 15, thus fixing the mounting roller 11. The first motor 2 rotates to transport the paper. The electric push rod 35 pushes the connecting piece 4, thereby pressing the paper pressure roller 45 onto the paper, thus pressing the paper. Furthermore, during paper feeding, the spring 41 pushes the mounting part 44, ensuring that the pressure roller 45 remains in contact with the paper, effectively preventing the paper roll from becoming loose when fed too quickly. The second motor 33 drives the threaded rod 32 to rotate, causing the rectangular part 31 to slide in the rectangular groove 3, allowing adjustment according to the position of the paper for convenient use. The third motor 42 drives the drive gear 43 to rotate, which in turn rotates the top pressure roller 45. Through the synchronous pulley 5 and synchronous belt, multiple pressure rollers 45 rotate simultaneously, feeding the paper and effectively reducing wear during feeding.

[0034] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A thermal printer with paper pressing and feeding function, characterized in that: Including printer body (1), the printer body (1) inside is provided with installation roller (11), the installation roller (11) outside both sides are provided with installation assembly, the printer body (1) inside rear is provided with paper pressing and feeding assembly; The installation assembly includes a first motor (2) and an electric telescopic rod (22); The paper pressing and feeding assembly includes a rectangular groove (3), a connecting piece (4) and a mounting piece (44), the rectangular groove (3) is internally slidably provided with a rectangular piece (31), and the mounting piece (44) is rotatably provided with a plurality of paper pressing rollers (45) on the inner side.

2. The thermal printer with a pressurized paper feed function according to claim 1, wherein The installation roller (11) is provided with an external thread (12), the external thread (12) is provided with a limiting disc (13), and the limiting disc (13) is in threaded connection with the external thread (12).

3. The thermal printer with a pressurized paper feed function according to claim 1, wherein The installation roller (11) is provided with a first hexagonal bolt (14) and a second hexagonal groove (15) on both sides, respectively, the first motor (2) drive shaft is provided with a first hexagonal groove (21), and the first hexagonal bolt (14) is disassembled in the first hexagonal groove (21).

4. The thermal printer with a pressurized paper feed function according to claim 3, wherein The electric telescopic rod (22) is provided with an annular groove (23), the annular groove (23) is internally rotatably provided with a rotating piece (24), the rotating piece (24) is provided with a second hexagonal bolt (25), and the second hexagonal bolt (25) is disassembled on the second hexagonal groove (15).

5. The thermal printer with a pressurized paper feed function according to claim 1, wherein The rectangular groove (3) is provided with a threaded rod (32) on the inner side below, the rectangular groove (3) is provided with a second motor (33) on one side of the outer side, the threaded rod (32) is connected with the threaded rod (32) of the second motor (33) drive shaft, and the rectangular piece (31) is provided with a threaded tube (34) on the bottom.

6. The thermal printer with a pressurized paper feed function according to claim 1, wherein The rectangular piece (31) is provided with an electric push rod (35), and the electric push rod (35) is connected with the connecting piece (4).

7. The thermal printer with a pressurized paper feed function according to claim 1, wherein The connecting piece (4) and the mounting piece (44) are in sliding connection, the mounting piece (44) is provided with a spring (41) at the rear, and the spring (41) is connected with the connecting piece (4).

8. The thermal printer with a pressurized paper feed function according to claim 1, wherein Multiple synchronous wheels (5) are provided on the outer side of the plurality of paper pressing rollers (45), and the plurality of synchronous wheels (5) are engaged through a synchronous belt.

9. The thermal printer with a pressurized paper feed function according to claim 1, wherein The mounting piece (44) is provided with a third motor (42) on one side of the top, the third motor (42) drive shaft is provided with a drive gear (43), one side of the top paper pressing roller (45) is provided with a driven gear (51), and the drive gear (43) is engaged with the driven gear (51).

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