A label printer with returnable thermal film

Abstract

The present invention discloses a label printer with returnable thermal sheets in the field of label printer technology. The label printer comprises a housing, a display component mounted on the front of the housing, a first label outlet disposed on the front of the housing, a serrated row disposed at the opening of the first label outlet, a second label outlet disposed on the top of the housing, a mounting opening disposed at the rear end of the housing, a cover plate hingedly connected to the opening of the mounting opening, and a motor assembly mounted on the side of the housing via a support plate. The motor assembly comprises a drive motor and two servo motors, the output end of the drive motor being engaged with a driven gear via a drive gear, and a driven rod extending through the interior of the driven gear. The present invention reprints a correct label on the back of a paper tape that was incorrectly printed the first time using a second thermal printing plate. This saves paper and, by eliminating the time required to tear off an incorrect label and reprint it, saves label printing time and facilitates label printing.

Description

Technical Field

[0001] The invention relates to the technical field of label printers, in particular to a label printer with returnable thermal sheets. Background Art

[0002] A label printer, or smart label printer, doesn't require a computer connection. It features a built-in keyboard or touchscreen interface, along with a pre-defined font library and a number of label templates. Users can directly input, edit, and format labels using the LCD screen, then print directly. The printing structure of a label printer includes a thermal film, print head, paper feed, top cover, rubber roller, and paper roll holder.

[0003] The thermal sheet is a precision electric heating device. Each sheet has a heating line with numerous tiny hot spots arranged on it, with a density of eight hot spots per 1mm. When the hot spots heat up, the corresponding areas of the thermal paper pressed against the sheet turn black. As the paper roll is pulled by the motor, the hot spots also change according to the changes in the printed data, ultimately forming text or patterns on the thermal paper for product identification and recording.

[0004] However, if a printing error occurs when an existing label printer prints on printing paper with a thermal sheet, the thermal sheet cannot be returned. After printing is completed, the thermal paper with the thermal sheet becomes waste paper, resulting in paper waste. Based on this, the present invention designs a label printer with a returnable thermal sheet to solve the above problem. Summary of the Invention

[0005] The object of the present invention is to provide a label printer with returnable thermal sheet, so as to solve the problem that if a printing error occurs in the existing label printer, the thermal sheet cannot be returned and can only become waste paper after printing, resulting in paper waste.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A label printer with returnable thermal film includes a housing, a display component installed on the front of the housing for displaying the working status of the printer, a first label outlet opened on the front of the housing, the first label outlet is used to send out a label that has been printed correctly once, a sawtooth row is provided at the opening of the first label outlet, and is used to cut off the label printing paper tape, a second label outlet is opened on the top of the housing, and the second label outlet is used to send out a label that has been printed correctly twice, a mounting opening is opened at the rear end of the housing, a cover plate is hinged at the opening of the mounting opening, the cover plate is used to seal the mounting opening, and the side of the housing is supported by a support. The support plate is equipped with a motor assembly, the input end of the motor assembly is electrically connected to an external power supply, the motor assembly includes a driving motor and two servo motors, the output end of the driving motor is engaged with a driven gear through a driving gear, a driven rod is passed through the interior of the driven gear, one end of the driven rod is connected to a paper roll supporting component, the surface of the paper roll supporting component is detachably connected to the paper roll assembly for unwinding the printing paper tape, the output end of the servo motor is engaged with a driven bevel gear through a driving bevel gear, a threaded rod is fixed to the top of the driven bevel gear, the top of the threaded rod is connected to the top of the housing through a connecting bearing, and the bottom of the housing is fixed with The surfaces of the limit rod, the threaded rod and the limit rod are respectively adapted to be connected with a lifting block, a paper traction plate is fixed between the two lifting blocks, a first thermal printing plate is fixed at the lower end of the shell, and a second thermal printing plate is installed at the upper end of the shell. A steering rod component is fixed to the inner wall of the shell for changing the direction of the printing paper tape. When printing, the driving motor is started, and the driving gear and the driven gear meshing with the driving gear are driven to rotate through the output end of the driving motor, and the driven gear drives the driven rod to rotate, and the driven rod drives the paper roll supporting component to unwind the printing paper tape. When a printing error occurs, the driving motor is reversed, and the paper roll supporting component is used to unwind the printing paper tape. The component rewinds the paper tape with incorrect printing, and the servo motor is started at this time. The output end of the servo motor drives the driving bevel gear and the driven bevel gear engaged with the driving bevel gear to rotate, and the threaded rod cooperates with the limit rod to move the lifting block in the vertical direction to a position close to the second thermal printing plate, so that the paper output end of the printing paper tape is close to the second thermal printing plate, and the correct label is reprinted on the back of the paper tape with incorrect printing for the first time through the second thermal printing plate. On the one hand, paper is saved, and at the same time, by eliminating the time of tearing off the incorrect label and reprinting, label printing time is saved, and label printing is convenient.

[0008] As a further solution of the present invention: the display component includes a display screen and a function button group, the function button group includes a return button, a switch button, an emergency stop button and a reset button, and the display screen is used to display the working status of the printer.

[0009] As a further solution of the present invention: a round rod is passed through the side wall of the shell, an auxiliary rod portion is fixed to one end of the round rod facing the storage rod portion, a bearing is installed at the connection between the round rod and the shell, and a counterweight block is fixed to the other end of the round rod, which is used to counterweight the round rod to prevent the installation direction of the round rod from being skewed.

[0010] As a further solution of the present invention: a through hole is formed through the side surface of the housing, and the through hole is coaxial with the driving bevel gear.

[0011] As a further solution of the present invention: the housing also includes a protective shell, and a heat dissipation hole is opened through the side of the protective shell, and a cavity is formed in the protective shell for accommodating the motor assembly.

[0012] As a further solution of the present invention: the paper roll supporting component includes a storage rod portion, the interior of the storage rod portion is movably connected to a moving rod, and a traction plate is fixed to one end of the moving rod.

[0013] As a further solution of the present invention: the paper roll assembly includes a printing paper roll and a support frame, and the support frame passes through the interior of the printing paper roll.

[0014] As a further solution of the present invention: a first supporting plate is fixed to the inner wall of the shell facing the first thermal printing plate, and a second supporting plate is fixed to the inner wall of the shell facing below the second thermal printing plate.

[0015] As a further solution of the present invention: the steering rod component includes a first steering rod and a second steering rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the correct label is reprinted on the back of the paper tape that was printed incorrectly the first time through the second thermal printing plate. On the one hand, paper is saved. At the same time, by eliminating the time of tearing off the incorrect label and reprinting, the label printing time is saved and the label printing is convenient.

[0018] 2. In the present invention, the driving bevel gear and the driven bevel gear engaged with the driving bevel gear are driven to rotate by the output end of the servo motor, and the lifting block is moved vertically to a position close to the second thermal printing plate by the threaded rod and the limit rod, so that the paper output end of the printing paper tape is close to the second thermal printing plate, which is convenient for reprinting of incorrectly printed labels.

[0019] 3. In the present invention, a counterweight is fixed to the other end of the round rod, and the counterweight can be used to balance the round rod, thereby preventing the installation direction of the round rod from being skewed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure from the right side perspective of the present invention;

[0022] Figure 3 This is a schematic diagram of the motor assembly installation structure of the present invention;

[0023] Figure 4 For the present invention Figure 3 A magnified view of middle A;

[0024] Figure 5 A front view of the connection of the paper roll supporting component of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the mobile rod of the present invention;

[0026] Figure 7 It is a front view of the internal structure of the shell of the present invention;

[0027] Figure 8 It is a schematic diagram of the threaded rod connection structure of the present invention.

[0028] In the figure: 1. Housing; 2. First label outlet; 3. Second label outlet; 4. Display screen; 5. Function button group; 6. Cover plate; 7. Protective shell; 8. Heat dissipation hole; 9. Driving motor; 10. Driving gear; 11. Driven gear; 12. Perforation; 13. Servo motor; 14. Driving bevel gear; 15. Driven bevel gear; 16. Threaded rod; 17. Lifting block; 18. Limiting rod; 19. Paper traction plate; 20. Connecting bearing; 21. Driven rod; 22. Storage rod; 23. Moving rod; 24. Traction plate; 25. Auxiliary rod; 26. Round rod; 27. Bearing; 28. Counterweight; 29. Support frame; 30. Printing paper roll; 31. First supporting plate; 33. First thermal printing board; 32. Second thermal printing board; 34. Second supporting plate; 35. First steering rod; 36. Second steering rod; 37. Mounting port. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] This embodiment;

[0031] See also Figures 1-8In one embodiment of the present invention, a label printer with a retractable thermal film includes a housing 1. A display component is mounted on the front of the housing 1 for displaying the printer's operating status. The display component includes a display screen 4 and a function button group 5. The function button group 5 includes a return button, a power button, an emergency stop button, and a reset button. The display screen 4 is used to display the printer's operating status.The front of the housing 1 is provided with a first label outlet 2, which is used to deliver a label that has been printed correctly once. A sawtooth row is provided at the opening of the first label outlet 2 for cutting off the label printing paper tape. The top of the housing 1 is provided with a second label outlet 3, which is used to deliver a label paper tape that has been printed correctly twice. The tail end of the housing 1 is provided with a mounting port 37, and a cover plate 6 is hinged at the opening of the mounting port 37. The cover plate 6 is used to encapsulate the mounting port 37. A motor assembly is installed on the side of the housing 1 through a support plate. The input end of the motor assembly is electrically connected to an external power supply. The motor assembly includes a drive motor 9 and two servo motors 13. The output end of the drive motor 9 is engaged with a driven gear 11 through a drive gear 10. The driven gear 1 1 is penetrated by a driven rod 21, one end of the driven rod 21 is connected to a paper roll supporting component, the paper roll supporting component includes a storage rod portion 22, the storage rod portion 22 is movably connected to a moving rod 23, one end of the moving rod 23 is fixed with a traction plate 24, the surface of the paper roll supporting component is detachably connected to a paper roll assembly for unwinding the printing paper tape, the output end of the servo motor 13 is engaged with a driven bevel gear 15 through a driving bevel gear 14, a threaded rod 16 is fixed to the top of the driven bevel gear 15, the top of the threaded rod 16 is connected to the top of the housing 1 through a connecting bearing 20, a limiting rod 18 is fixed to the bottom of the housing 1, and the surfaces of the threaded rod 16 and the limiting rod 18 are respectively adapted to be connected to a lifting block 17, and a lifting block 17 is fixed between the two lifting blocks 17. A paper traction plate 19 is fixed to the lower end of the shell 1 with a first thermal printing plate 33, and a second thermal printing plate 32 is installed on the upper end of the shell 1. A steering rod component is fixed to the inner wall of the shell 1 for converting the direction of the printing paper tape. A first supporting plate 31 is fixed to the inner wall of the shell 1 facing the first thermal printing plate 33, and a second supporting plate 34 is fixed to the inner wall of the shell 1 facing below the second thermal printing plate 32. The steering rod component includes a first steering rod 35 and a second steering rod 36. When printing, the drive motor 9 is started, and the output end of the drive motor 9 drives the drive gear 10 and the driven gear 11 meshing with the drive gear 10 to rotate, the driven gear 11 drives the driven rod 21 to rotate, and the driven rod 21 drives the paper roll supporting component to unwind and print. When printing an error on the paper tape, the drive motor 9 reverses, and the paper roll support rewinds the incorrectly printed paper tape. At this time, the servo motor 13 is started. The output end of the servo motor 13 drives the driving bevel gear 14 and the driven bevel gear 15 engaged with the driving bevel gear 14 to rotate. The threaded rod 16 cooperates with the limit rod 18 to move the lifting block 17 vertically to a position close to the second thermal printing plate 32, so that the paper output end of the printing paper tape is close to the second thermal printing plate 32. The second thermal printing plate 32 reprints the correct label on the back of the paper tape with the first print error. On the one hand, this saves paper. At the same time, by eliminating the time of tearing off the incorrect label and reprinting, it saves label printing time and facilitates label printing.

[0032] Preferably, Figure 5 As shown, a round rod 26 passes through the side wall of the shell 1, and an auxiliary rod portion 25 facing the storage rod portion 22 is fixed at one end of the round rod 26. A bearing 27 is installed at the connection between the round rod 26 and the shell 1, and a counterweight block 28 is fixed at the other end of the round rod 26. The counterweight block 28 is used to counterweight the round rod 26 to prevent the installation direction of the round rod 26 from being skewed.

[0033] Preferably, Figure 8 As shown, a through hole 12 is formed through the side surface of the housing 1 , and the through hole 12 is coaxial with the driving bevel gear 14 .

[0034] Preferably, Figure 1 As shown, the housing 1 further includes a protective shell 7 , a heat dissipation hole 8 is opened through the side of the protective shell 7 , and a cavity is formed inside the protective shell 7 for accommodating the motor assembly.

[0035] Preferably, Figure 7 As shown, the paper roll assembly includes a printing paper roll 30 and a support frame 29 , and the support frame 29 passes through the interior of the printing paper roll 30 .

[0036] The working principle of the present invention is: when in use, the printer is electrically connected to an external power supply, the drive motor 9 is started, and the output end of the drive motor 9 drives the drive gear 10 and the driven gear 11 meshing with the drive gear 10 to rotate, the driven gear 11 drives the driven rod 21 to rotate, and the driven rod 21 drives the paper roll supporting component to unwind the printing paper tape. When a printing error occurs, the drive motor 9 is reversed, and the paper roll supporting component rewinds the incorrectly printed paper tape. At this time, the servo motor 13 is started, and the output end of the servo motor 13 drives the drive bevel gear 14 and the driven bevel gear 15 meshing with the drive bevel gear 14 to rotate. The threaded rod 16 cooperates with the limit rod 18 to make the lifting block 17 move vertically to a position close to the second thermal printing plate 32, so that the paper output end of the printing paper tape is close to the second thermal printing plate 32, and the correct label is reprinted on the back of the paper tape that was printed incorrectly for the first time through the second thermal printing plate 32.

[0037] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A label printer with a returnable thermal sheet, comprising a housing (1), a display component mounted on the front of the housing (1), and a first label outlet (2) formed on the front of the housing (1), characterized in that: The top of the housing (1) is provided with a second label outlet (3), the rear end of the housing (1) is provided with a mounting port (37), the opening of the mounting port (37) is hinged with a cover plate (6), the side of the housing (1) is provided with a motor assembly via a support plate, the motor assembly comprises a driving motor (9) and two servo motors (13), the output end of the driving motor (9) is engaged with a driven gear (11) via a driving gear (10), a driven rod (21) is passed through the interior of the driven gear (11), one end of the driven rod (21) is connected to a paper roll supporting component, the surface of the paper roll supporting component is detachably connected to the paper roll assembly for unrolling the printing paper tape, the output end of the servo motor (13) is engaged with a driven gear (11) via a driving gear (10), a driven rod (21) is passed through the interior of the driven gear (11), one end of the driven rod (21) is connected to a paper roll supporting component, the surface of the paper roll supporting component is detachably connected to the paper roll assembly for unrolling the printing paper tape, The bevel gear (14) is engaged with a driven bevel gear (15), a threaded rod (16) is fixed to the top of the driven bevel gear (15), the top of the threaded rod (16) is connected to the top of the housing (1) through a connecting bearing (20), a limiting rod (18) is fixed to the bottom of the housing (1), the surfaces of the threaded rod (16) and the limiting rod (18) are respectively adapted to be connected with a lifting block (17), a paper traction plate (19) is fixed between the two lifting blocks (17), a first thermal printing plate (33) is fixed to the lower end of the housing (1), a second thermal printing plate (32) is installed on the upper end of the housing (1), and a steering rod component is fixed to the inner wall of the housing (1) for converting the direction of the printing paper tape.

2. The label printer with returnable thermal film according to claim 1, characterized in that: The display component comprises a display screen (4) and a function button group (5), and the function button group (5) comprises a return button, a switch button, an emergency stop button and a reset button.

3. The label printer with returnable thermal film according to claim 2, characterized in that: The paper roll supporting component comprises a storage rod portion (22), a round rod (26) is passed through the side wall of the housing (1), an auxiliary rod portion (25) facing the storage rod portion (22) is fixed to one end of the round rod (26), a bearing (27) is installed at the connection between the round rod (26) and the housing (1), and a counterweight (28) is fixed to the other end of the round rod (26).

4. The label printer with returnable thermal film according to claim 3, characterized in that: A through hole (12) is provided through the side surface of the housing (1), and the through hole (12) is coaxial with the driving bevel gear (14).

5. The label printer with returnable thermal film according to claim 4, characterized in that: The housing (1) further comprises a protective shell (7), a heat dissipation hole (8) is provided through the side of the protective shell (7), and a cavity is formed in the protective shell (7) for accommodating the motor assembly.

6. The label printer with returnable thermal film according to claim 5, characterized in that: The interior of the storage rod portion (22) is movably connected to a moving rod (23), and one end of the moving rod (23) is fixed with a traction plate (24).

7. The label printer with returnable thermal film according to claim 1, characterized in that: The paper roll assembly comprises a printing paper roll (30) and a support frame (29), wherein the support frame (29) passes through the interior of the printing paper roll (30).

8. The label printer with returnable thermal film according to claim 1, characterized in that: A first supporting plate (31) is fixed on the inner wall of the shell (1) facing the first thermal printing plate (33), and a second supporting plate (34) is fixed on the inner wall of the shell (1) facing the lower part of the second thermal printing plate (32).

9. The label printer with returnable thermal film according to claim 1, characterized in that: The steering rod component includes a first steering rod (35) and a second steering rod (36).

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