Anti-wrinkle feeding structure of thermal printer

Abstract

The invention provides an anti-wrinkle feeding structure of a thermal printer, and belongs to the technical field of thermal printers, the anti-wrinkle feeding structure of the thermal printer comprises a shell, side plates are fixedly connected to the two sides of the interior of the shell, U-shaped clamping grooves are formed in the side plates, a clamping shaft is clamped between the side plates through the U-shaped clamping grooves, and the clamping shaft is connected with the shell. The two ends of the clamping shaft are both sleeved with pressing discs, a first limiting assembly used for driving the pressing discs to move is arranged at the bottom of the inner side of the shell, a guide shaft is fixedly connected to the interior of the shell, and the outer sides of the two ends of the guide shaft are both sleeved with shifting pieces. According to the anti-wrinkle feeding structure of the thermal printer, through cooperation of the first limiting assembly, the second limiting assembly and the driving assembly, the thermal paper can be limited, so that the two unfolded sides of the thermal paper are more uniform, the phenomenon of paper jam caused by deflection of the thermal paper is avoided, the working stability of the thermal printer is improved, and the printing efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of thermal printers, and in particular relates to an anti-wrinkle feeding structure of a thermal printer. Background Art

[0002] The working principle of a thermal printer is that a semiconductor heating element is installed on the print head. After the print head is heated and contacts the thermal printing paper, the required pattern can be printed out. Its principle is similar to that of a thermal fax machine. The image is generated by heating and a chemical reaction in the film. The chemical reaction of this thermal printer takes place at a certain temperature, and high temperature will accelerate this chemical reaction.

[0003] When printing, if the paper is wrinkled or uneven, it is very easy to cause paper jam in the printer, which requires the printer to be disassembled for repair, which is not conducive to printing and reduces printing efficiency. For this reason, we propose a thermal printer anti-paper jam structure. Summary of the invention

[0004] The object of the present invention is to provide a thermal printer anti-wrinkle feeding structure, aiming to solve the problem of easy paper jam in thermal printers in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A thermal printer wrinkle-proof feeding structure comprises a shell, side plates are fixedly connected to both sides of the shell, U-shaped slots are arranged inside the side plates, a card shaft is arranged between the side plates through the U-shaped slot, pressure plates are sleeved at both ends of the card shaft, a first limiting component for driving the pressure plate to move is arranged at the bottom of the inner side of the shell, a guide shaft is fixedly connected to the inside of the shell, paddles are sleeved at the outer sides of both ends of the guide shaft, a second limiting component for driving the paddle to move is arranged inside the shell, a driving component for driving the first limiting component and the second limiting component to move synchronously is arranged on one side of the shell, a driven rotating shaft and an active rotating shaft are arranged on one side of the shell, and a motor for driving the active rotating shaft to rotate is fixedly connected to the shell.

[0006] As a preferred embodiment of the present invention, the first limiting assembly includes a second bidirectional screw and a connecting rod, the second bidirectional screw is rotatably connected inside the shell, the outer sides of both ends of the second bidirectional screw are respectively threadedly connected with fixed blocks, the top of the fixed block is fixedly connected with two plug rods, the bottom of the pressure plate is provided with a slot adapted for the plug rod, and the fixed block is slidably connected to the connecting rod.

[0007] As a preferred embodiment of the present invention, the second limiting assembly includes a first bidirectional lead screw, and the two paddles are respectively threadedly connected to two ends of the first bidirectional lead screw.

[0008] As a preferred embodiment of the present invention, the driving assembly includes a third pulley rotatably connected to the shell, a rotating block is fixedly connected to one side of the third pulley, one end of the first bidirectional screw passes through the shell and is fixedly connected to the first pulley, one end of the second bidirectional screw passes through the shell and is fixedly connected to the second pulley, a belt is arranged on the outer side of the third pulley, the first pulley, the second pulley and the third pulley are connected by a belt, and a cover is arranged on the outer side of the belt.

[0009] As a preferred embodiment of the present invention, an anti-slip groove is provided on the outer circumference of the rotating block.

[0010] As a preferred embodiment of the present invention, movable holes are provided on both sides of the top of the U-shaped slot, a coil spring is provided inside the movable hole, one end of the coil spring is fixedly connected to a block, and the upper surface and the lower surface of the block are both inclined surfaces.

[0011] As a preferred embodiment of the present invention, installation grooves are provided on both sides of one end of the shell, a movable block is movably connected inside the installation groove, a compression spring is fixedly connected to the bottom of the movable block, a connecting block is fixedly connected to the bottom of the compression spring, and the driven shaft is rotatably connected between the two connecting blocks.

[0012] As a preferred embodiment of the present invention, movable grooves are arranged inside both sides of the installation groove, and side blocks adapted to the movable grooves are arranged on both sides of the movable block.

[0013] As a preferred embodiment of the present invention, outer surfaces of the driven rotating shaft and the driving rotating shaft are both provided with a rubber layer.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The anti-wrinkle feeding structure of the thermal printer can limit the thermal paper through the cooperation between the first limiting component, the second limiting component and the driving component, so that the two sides of the unfolded thermal paper are more even, avoiding the thermal paper from being skewed and causing paper jams, thereby improving the stability of the thermal printer during operation and helping to improve printing efficiency.

[0015] 2. The anti-wrinkle feeding structure of the thermal printer, through the cooperation among the mounting groove, the movable block, the connecting block, the compression spring and the driven shaft, can apply pressure to the top of the movable block after the printer cover is closed, so that the driven shaft moves downward, making the contact between the driven shaft and the driving shaft closer, which is conducive to driving the thermal paper to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is a schematic cross-sectional structure diagram of the first limiting component in the present invention; Figure 3 It is a schematic diagram of the structure of the driving component in the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the side panel in the present invention; Figure 5 It is a schematic diagram of the internal structure of the installation slot in the present invention.

[0017] In the figure: 1. shell; 2. side plate; 3. clamping shaft; 4. pressure plate; 5. U-shaped clamping groove; 6. clamping block; 7. cover shell; 8. rotating block; 9. guide shaft; 10. driven rotating shaft; 11. driving rotating shaft; 12. paddle; 13. movable groove; 14. first bidirectional screw; 15. mounting groove; 16. movable block; 17. connecting block; 18. motor; 19. slot; 20. plug rod; 21. fixed block; 22. second bidirectional screw; 23. connecting rod; 24. movable hole; 25. coil spring; 26. belt; 27. first pulley; 28. second pulley; 29. ​​third pulley; 30. anti-skid groove; 31. compression spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0019] Please refer to Figures 1-5. The present invention provides the following technical solutions: A thermal printer anti-wrinkle feeding structure includes a shell 1, side panels 2 are fixedly connected to both sides of the shell 1, U-shaped card slots 5 are arranged inside the side panels 2, a card shaft 3 is clamped between the side panels 2 through the U-shaped card slots 5, and pressure plates 4 are sleeved on both ends of the card shaft 3. A first limiting component for driving the pressure plate 4 to move is arranged at the bottom of the inner side of the shell 1, a guide shaft 9 is fixedly connected to the inside of the shell 1, and paddles 12 are sleeved on the outer sides of both ends of the guide shaft 9, a second limiting component for driving the paddle 12 to move is arranged inside the shell 1, a driving component for driving the first limiting component and the second limiting component to move synchronously is arranged on one side of the shell 1, a driven rotating shaft 10 and an active rotating shaft 11 are arranged on one side of the shell 1, and a motor 18 for driving the active rotating shaft 11 to rotate is fixedly connected to the shell 1.

[0020] In a specific embodiment of the present invention, the card shaft 3 is moved upward to remove the card shaft 3 from the U-shaped card slot 5, and the thermal paper roll is sleeved on the outer side of the card shaft 3 so that it is located between the two pressure plates 4. Then, the thermal paper and the card shaft 3 are placed inside the housing 1, and the first limiting component and the second limiting component are driven by the driving component to move synchronously, so that the pressure plate 4 is clamped on the corresponding first limiting component, and then one end of the thermal paper is unfolded so that it bypasses the guide shaft 9 and passes through the driven shaft 10 and the driving shaft 11. The unfolded thermal paper is located between the two paddles 12, and then the driving component is operated to make the first limiting mechanism and the second limiting mechanism move synchronously, so that the thermal paper maintains a suitable distance from the pressure plate 4 and the paddle 12, and the installation of the thermal paper can be completed. The structure limits the thermal paper through the pressure plate 4 and the paddle 12, so that the two sides of the unfolded thermal paper are more uniform, and the thermal paper is prevented from being skewed and causing paper jams, thereby improving the stability of the thermal printer during operation, which is conducive to improving printing efficiency, and the operation is convenient and quick, which is convenient for the installation of thermal paper.

[0021] Specifically, the first limiting assembly includes a second bidirectional screw 22 and a connecting rod 23. The second bidirectional screw 22 is rotatably connected to the inside of the shell 1. The outer sides of both ends of the second bidirectional screw 22 are respectively threadedly connected with fixed blocks 21. The top of the fixed block 21 is fixedly connected with two plug rods 20. The bottom of the pressure plate 4 is provided with a slot 19 adapted to the plug rod 20. The fixed block 21 is slidably connected to the connecting rod 23.

[0022] In this embodiment: the connecting rod 23 limits the fixed block 21 to prevent the fixed block 21 from rotating with the second bidirectional lead screw 22 when it rotates, so that the fixed block 21 moves more smoothly; when the card shaft 3 with the thermal paper roll is installed in the U-shaped card slot 5, the second bidirectional lead screw 22 is rotated to drive the two pressure plates 4 to move in opposite or facing directions at the same time, so that the slot 19 on the pressure plate 4 corresponds to the position of the insertion rod 20, so that the insertion rod 20 can be smoothly inserted into the slot 19, and at this time, the pressure plate 4 can be driven to move by the fixed block 21 to achieve the limitation of the thermal paper roll.

[0023] Specifically, the second limiting assembly includes a first bidirectional lead screw 14 , and the two paddles 12 are respectively threadedly connected to the two ends of the first bidirectional lead screw 14 .

[0024] In this embodiment, the first bidirectional lead screw 14 can simultaneously drive the two paddles 12 to move in opposite or toward directions, so that the distance between the two is increased or decreased, and the unfolded thermal paper can be limited.

[0025] Specifically, the driving assembly includes a third pulley 29 rotatably connected to the shell 1, a rotating block 8 is fixedly connected to one side of the third pulley 29, one end of the first bidirectional screw 14 passes through the shell 1 and is fixedly connected to the first pulley 27, one end of the second bidirectional screw 22 passes through the shell 1 and is fixedly connected to the second pulley 28, a belt 26 is arranged on the outer side of the third pulley 29, the first pulley 27, the second pulley 28 and the third pulley 29 are connected by the belt 26, and a cover shell 7 is arranged on the outer side of the belt 26.

[0026] In the present embodiment: the first pulley 27 and the second pulley 28 have the same size; the third pulley 29 is rotated by rotating the rotating block 8, and the third pulley 29 rotates the first pulley 27 and the second pulley 28 by driving the belt 26, thereby making the first bidirectional lead screw 14 and the second bidirectional lead screw 22 rotate synchronously, so that the pressure plate 4 and the paddle 12 can be adjusted at the same time, and the operation is more convenient and quick.

[0027] Specifically, an anti-slip groove 30 is provided on the outer circumference of the rotating block 8 .

[0028] In this embodiment, the anti-skid groove 30 is used to increase the friction between the rotating block 8 and the finger, so that the rotation of the rotating block 8 is more labor-saving.

[0029] Specifically, movable holes 24 are provided on both sides of the top of the U-shaped slot 5, and a coil spring 25 is provided inside the movable hole 24. One end of the coil spring 25 is fixedly connected to a clamping block 6, and the upper and lower surfaces of the clamping block 6 are both inclined surfaces.

[0030] In this embodiment: the clamping block 6 is used to limit the two ends of the clamping shaft 3, so that the clamping shaft 3 is fixed more securely. When the clamping block 6 is subjected to force, the coil spring 25 is compressed and enters the inside of the movable hole 24, and the limit is released at this time; when the clamping block 6 is not subjected to force, the clamping block 6 is reset under the action of the coil spring 25, thereby realizing the limit of the clamping shaft 3.

[0031] Specifically, mounting grooves 15 are provided on both sides of one end of the shell 1, and a movable block 16 is movably connected inside the mounting groove 15. A compression spring 31 is fixedly connected to the bottom of the movable block 16, and a connecting block 17 is fixedly connected to the bottom of the compression spring 31. The driven shaft 10 is rotatably connected between the two connecting blocks 17.

[0032] In this embodiment: through the cooperation among the mounting groove 15, the movable block 16, the connecting block 17, the compression spring 31 and the driven shaft 10, after the printer cover is closed, pressure can be applied to the top of the movable block 16 to move the driven shaft 10 downward, making the contact between the driven shaft 10 and the driving shaft 11 closer, which is conducive to driving the thermal paper to move.

[0033] Specifically, movable grooves 13 are provided inside both sides of the installation groove 15 , and side blocks matched with the movable grooves 13 are provided on both sides of the movable block 16 .

[0034] In this embodiment, the cooperation between the movable groove 13 and the side block can improve the installation stability of the movable block 16 and the installation groove 15.

[0035] Specifically, the outer surfaces of the driven rotating shaft 10 and the driving rotating shaft 11 are both provided with a rubber layer.

[0036] In this embodiment, by providing a rubber layer on the outer surface of the driven shaft 10 and the driving shaft 11, the friction between the thermal paper and the driven shaft 10 and the driving shaft 11 can be increased, which is beneficial for the unfolding of the thermal paper.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A thermal printer anti-wrinkle feeding structure, comprising a housing (1), characterized in that: Side plates (2) are fixedly connected to both sides of the shell (1), U-shaped slots (5) are provided inside the side plates (2), a clamping shaft (3) is clamped between the side plates (2) through the U-shaped slots (5), and pressure plates (4) are sleeved on both ends of the clamping shaft (3). A first limit assembly for driving the pressure plate (4) to move is provided at the bottom of the inner side of the shell (1), a guide shaft (9) is fixedly connected to the inside of the shell (1), and paddles (12) are sleeved on the outer sides of both ends of the guide shaft (9), and a second limit assembly for driving the paddle (12) to move is provided inside the shell (1), a driving assembly for driving the first limit assembly and the second limit assembly to move synchronously is provided on one side of the shell (1), a driven shaft (10) and a driving shaft (11) are provided on one side of the shell (1), and a motor (18) for driving the driving shaft (11) to rotate is fixedly connected to the shell (1).

2. The anti-wrinkle feeding structure of a thermal printer according to claim 1, characterized in that: The first limit assembly comprises a second bidirectional lead screw (22) and a connecting rod (23); the second bidirectional lead screw (22) is rotatably connected inside the housing (1); both ends of the second bidirectional lead screw (22) are respectively threadedly connected to fixed blocks (21); the top of the fixed block (21) is fixedly connected to two insertion rods (20); the bottom of the pressure plate (4) is provided with a slot (19) adapted to the insertion rod (20); the fixed block (21) is slidably connected to the connecting rod (23).

3. The anti-wrinkle feeding structure of a thermal printer according to claim 2, characterized in that: The second limit assembly comprises a first bidirectional lead screw (14), and the two paddles (12) are respectively threadedly connected to two ends of the first bidirectional lead screw (14).

4. The anti-wrinkle feeding structure of a thermal printer according to claim 3, characterized in that: The driving assembly comprises a third pulley (29) rotatably connected to the housing (1); a rotating block (8) is fixedly connected to one side of the third pulley (29); one end of the first bidirectional lead screw (14) passes through the housing (1) and is fixedly connected to the first pulley (27); one end of the second bidirectional lead screw (22) passes through the housing (1) and is fixedly connected to the second pulley (28); a belt (26) is arranged on the outer side of the third pulley (29); the first pulley (27), the second pulley (28) and the third pulley (29) are connected via the belt (26); and a cover (7) is arranged on the outer side of the belt (26).

5. The anti-wrinkle feeding structure of a thermal printer according to claim 4, characterized in that: An anti-slip groove (30) is provided in the circumferential direction of the outer side of the rotating block (8).

6. The anti-wrinkle feeding structure of a thermal printer according to claim 1, characterized in that: Both sides of the top of the U-shaped slot (5) are provided with movable holes (24), a coil spring (25) is provided inside the movable hole (24), one end of the coil spring (25) is fixedly connected to a clamping block (6), and the upper surface and the lower surface of the clamping block (6) are both inclined surfaces.

7. The anti-wrinkle feeding structure of a thermal printer according to claim 1, characterized in that: Mounting grooves (15) are provided on both sides of one end of the housing (1); a movable block (16) is movably connected inside the mounting groove (15); a compression spring (31) is fixedly connected to the bottom of the movable block (16); a connecting block (17) is fixedly connected to the bottom of the compression spring (31); and the driven shaft (10) is rotatably connected between the two connecting blocks (17).

8. The anti-wrinkle feeding structure of a thermal printer according to claim 7, characterized in that: Movable grooves (13) are provided inside both sides of the installation groove (15), and side blocks matching the movable grooves (13) are provided on both sides of the movable block (16).

9. The anti-wrinkle feeding structure of a thermal printer according to claim 1, characterized in that: The outer surfaces of the driven rotating shaft (10) and the driving rotating shaft (11) are both provided with a rubber layer.

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