A printer anti-tear paper device

Abstract

The application belongs to the technical field of printing equipment, and specifically relates to a printer paper anti-pulling device, which comprises a mounting seat, a paper outlet for printing paper passing through is arranged on the mounting seat, a pressing assembly is arranged in the mounting seat, the pressing assembly comprises a gear set and a paper pressing cutter, the gear set is connected with a motor, and the gear set drives the paper pressing cutter to move up and down under the driving of the motor, the printing paper at the paper outlet is pressed when the paper pressing cutter moves to the upper side, and the printing paper pressed is released when the paper pressing cutter moves to the lower side. The printer paper anti-pulling device can be installed on a corresponding bill printer, and is used for pressing the printing paper after the bill is printed, so that the printing paper is prevented from being deviated due to the tearing of the bill and the printing effect of the next time is affected.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, specifically to a printer anti-paper-tearing device. Background Technology

[0002] In some existing lottery printers and ticket printing terminals, printed tickets often need to be manually torn off. This traditional method of tearing paper has significant drawbacks: uneven force or slight deviations in direction can easily cause the paper roll to be pulled at an angle and shift. Once the paper roll is pulled at an angle, it will directly affect the subsequent printing effect, causing misaligned characters, skewing, or even missing content, greatly reducing the readability and standardization of the printed tickets, affecting the user experience and the reliability of the equipment. Therefore, this application aims to provide an anti-tear paper device for printers. This device can apply a stable clamping force to the remaining printing consumables (i.e., the paper roll) after the ticket is printed, preventing the remaining unused paper roll from shifting or skewing due to uneven force when the user tears off the printed ticket, thereby ensuring the printing effect of subsequent tickets. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a printer anti-paper tearing device, which can be used to press the remaining unprinted paper after the ticket is printed, so as to avoid the unused paper from shifting due to tearing the ticket, thereby affecting the printing effect of the next time.

[0004] The technical solution of this utility model is: a printer anti-paper-tearing device, including a mounting base, on which a paper outlet for printing paper to pass through is provided; a clamping component is provided inside the mounting base; the clamping component includes a gear set and a paper-pressing blade; the gear set is connected to a motor, and under the drive of the motor, the gear set drives the paper-pressing blade to move up and down; when the paper-pressing blade moves to the top, it clamps the printing paper at the paper outlet; when the paper-pressing blade moves to the bottom, it releases the clamped printing paper.

[0005] Furthermore, the mounting base includes a base frame and a top cover. The base frame is provided with a fixing column for mounting the gear set; the base frame is also provided with a guide groove for guiding the paper pressure knife to move up and down.

[0006] Furthermore, the gear set includes at least a first gear and a second gear that mesh with each other; wherein a cam is provided on the first gear; the paper pressure knife is provided with a groove and a protrusion, the groove being used to cooperate with the cam, and the protrusion being used to cooperate with the guide groove; when the first gear rotates, the paper pressure knife performs periodic up and down movements through the cooperation of the cam and the groove and the cooperation of the protrusion and the guide groove.

[0007] Furthermore, the paper-pressing knife consists of a knife body and a wear-resistant part, wherein the knife body and the wear-resistant part are detachably connected; the wear-resistant part is provided with protrusions and grooves.

[0008] Furthermore, the clamping assembly also includes a limit switch. The first gear is also provided with a sensing part for cooperating with the limit switch. When the sensing part rotates to the position cooperating with the limit switch, the limit switch will send a relevant signal to control the working state of the motor, so that the motor stops or starts, thereby stopping the first gear at a preset angle. This also makes it easier to stop the paper pressing knife at the top or bottom.

[0009] Furthermore, the base frame is provided with a pressing groove at the paper outlet, which is used to cooperate with the paper pressing knife; when the paper pressing knife moves upward, it presses the printing paper into the pressing groove, and the printing paper is bent in the pressing groove to achieve the effect of not being easy to pull out.

[0010] Furthermore, the paper outlet is arranged parallel to one side of the mounting base, and the guide groove is arranged perpendicular to the paper outlet. Preferably, the guide groove is an oblong hole.

[0011] Furthermore, the second gear has a coaxial double gear structure, which allows the second gear to mesh with both the motor's main shaft gear and the first gear simultaneously.

[0012] Furthermore, the base frame and the top cover are detachably connected by screws.

[0013] The beneficial effects of this utility model are as follows: The anti-paper tearing device for printers in this utility model can be installed on the corresponding receipt printer to press the printing paper after the receipt is printed, so as to avoid the unused printing paper from shifting due to tearing the receipt and thus affecting the printing effect of the next time. Attached Figure Description

[0014] Figure 1 This is a perspective view of Embodiment 1 of the present utility model;

[0015] Figure 2 This is an exploded view of Embodiment 1 of this utility model;

[0016] Figure 3 This is a schematic diagram of the base frame in Embodiment 1 of this utility model;

[0017] Figure 4 This is a cross-sectional schematic diagram of the base frame in Embodiment 1 of this utility model;

[0018] Figure 5 This is a schematic diagram of the paper-pressing knife in Embodiment 1 of this utility model;

[0019] Figure 6 This is a schematic diagram of the first gear in Embodiment 1 of this utility model;

[0020] Figure 7 This is a schematic diagram of the paper-pressing knife in Embodiment 1 of this utility model when it is at the top and bottom respectively; where a) is at the top and b) is at the bottom;

[0021] In the diagram: 1. Mounting base; 11. Base frame; 12. Top cover; 13. Paper outlet; 14. Guide groove; 15. Fixing column; 16. Pressing groove; 2. Motor; 3. Second gear; 4. First gear; 41. Cam; 42. Sensing part; 5. Paper pressing knife; 51. Knife body; 52. Wear-resistant part; 53. Protrusion; 54. Groove; 6. Limit switch. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to specific embodiments. Methods or functional components not specifically described in the embodiments are all prior art. Example

[0023] like Figure 1-7 As shown, this embodiment is a printer anti-paper-tearing device, including a mounting base 1, on which a paper outlet 13 for printing paper to pass through is provided; a clamping assembly is provided inside the mounting base 1; the clamping assembly includes a gear set and a paper-pressing blade 5; the gear set is connected to a motor 2, and under the drive of the motor 2, the gear set drives the paper-pressing blade 5 to move up and down; when the paper-pressing blade 5 moves to the top, it clamps the printing paper at the paper outlet 13; when the paper-pressing blade 5 moves to the bottom, it releases the clamped printing paper.

[0024] In this embodiment, the mounting base 1 includes a base frame 11 and a top cover 12, which are detachably connected by screws. A fixing post 15 for mounting the gear assembly is provided on the base frame 11; a guide groove 14 for guiding the paper pressure knife 5 to move up and down is also provided on the base frame 11. The guide groove 14 is an oblong hole; the paper outlet 13 is arranged parallel to one side of the mounting base 1, and the guide groove 14 is perpendicular to the paper outlet 13.

[0025] In this embodiment, the gear set includes a first gear 4 and a second gear 3 that mesh with each other; the first gear 4 is provided with a cam 41; the paper pressure knife 5 is provided with a groove 54 and a protrusion 53, the groove 54 is used to cooperate with the cam 41, and the protrusion 53 is used to cooperate with the guide groove 14; when the first gear 4 rotates, the paper pressure knife 5 performs periodic up and down movement through the cooperation of the cam 41 and the groove 54 and the cooperation of the protrusion 53 and the guide groove 14. The second gear 3 is a coaxial double gear structure, so that the second gear 3 meshes with the main shaft gear of the motor 2 and the first gear 4 simultaneously.

[0026] In this embodiment, the paper pressing knife 5 is composed of a knife body 51 and a wear-resistant part 52, and the knife body 51 and the wear-resistant part 52 are detachably connected; the wear-resistant part 52 is provided with protrusions 53 and grooves 54.

[0027] In this embodiment, the pressing assembly also includes a limit switch 6. The first gear 4 is also provided with a sensing part 42 for cooperating with the limit switch 6. When the sensing part 42 rotates to the position cooperating with the limit switch 6, the limit switch 6 will send a relevant signal to control the working state of the motor 2, so that the motor 2 stops or starts, thereby stopping the first gear 4 at a preset angle. This also makes it easier to stop the paper pressing knife 5 at the top or bottom.

[0028] In this embodiment, the base frame 11 is provided with a pressing groove 16 at the paper outlet 13. The pressing groove 16 is used to cooperate with the paper pressing knife 5. When the blade body 51 of the paper pressing knife 5 moves to the top, it presses the printing paper into the pressing groove 16. The printing paper is bent in the pressing groove 16, so that it is not easy to pull out.

[0029] The working principle of the anti-paper-tearing device in this embodiment is as follows: The motor 2 of the anti-paper-tearing device is controlled by the main board of the printer body. After printing is completed, the motor 2 in this device receives a signal from the main board and starts working, causing the motor 2 to drive the second gear 3 to rotate. The second gear 3 drives the first gear 4 to rotate. When the second gear 3 rotates, the cam 41 on it rotates synchronously. Since the cam 41 cooperates with the groove 54 on the paper pressure knife 5, the rotation of the cam 41 will drive the paper pressure knife 5 to move. The paper pressure knife 5 will move upward under the restriction of the guide groove 14. When the blade body 51 of the paper pressure knife 5 moves to the top, the top of the blade body 51 can be inserted into the squeezing groove 16 on the base frame 11, and the printed paper will also be squeezed into the squeezing groove 16. The sensing unit 42 senses the limit switch 6, and the limit switch 6 sends a corresponding signal to stop the motor 2 in this device; thereby stopping the blade body 51 at the top position. At this time, the printing paper is bent multiple times due to being pressed into the pressing groove 16, making the printing paper in the mounting base 1 less likely to be pulled, and the user can safely tear off the printed ticket; when it is time to print the next content, the main board sends a command, the motor 2 of this device starts to work, the first gear 4 continues to rotate, causing the paper pressure blade 5 to move downward under the action of the cam 41, thereby releasing the pressure on the printing paper, until the blade body 51 moves to the bottom, and the printing paper can pass normally through the paper outlet 13 in this device so that printing can start again; after printing is completed, the above process is repeated.

[0030] The above are only some embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various combinations and modifications of the aforementioned technical features. Any improvements, modifications, equivalent substitutions, or applications of the structure or method of the present utility model to other fields to achieve the same effect without departing from the spirit and scope of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A printer anti-paper-tearing device, comprising a mounting base, characterized in that: The mounting base is provided with a paper outlet for printing paper to pass through; a clamping assembly is provided inside the mounting base; the clamping assembly includes a gear set and a paper clamping blade; the gear set is connected to a motor, and under the drive of the motor, the gear set drives the paper clamping blade to move up and down; when the paper clamping blade moves to the top, it clamps the printing paper at the paper outlet; when the paper clamping blade moves to the bottom, it releases the clamped printing paper.

2. The printer anti-paper-tearing device according to claim 1, characterized in that: The mounting base includes a base frame and a top cover. The base frame is provided with a fixing column for mounting the gear set; the base frame is also provided with a guide groove for guiding the paper pressing knife to move up and down.

3. The printer anti-paper-tearing device according to claim 2, characterized in that: The gear set includes at least a first gear and a second gear that mesh with each other; wherein a cam is provided on the first gear; the paper pressure knife is provided with a groove and a protrusion, the groove is used to cooperate with the cam, and the protrusion is used to cooperate with the guide groove; when the first gear rotates, the paper pressure knife performs periodic up and down movement through the cooperation of the cam and the groove and the cooperation of the protrusion and the guide groove.

4. The printer anti-paper-tearing device according to claim 3, characterized in that: The paper-pressing knife consists of a knife body and a wear-resistant part, and the knife body and the wear-resistant part are detachably connected; the wear-resistant part is provided with protrusions and grooves.

5. The printer anti-paper-tearing device according to claim 3, characterized in that: The clamping assembly also includes a limit switch, and the first gear is also provided with a sensing part for cooperating with the limit switch. When the sensing part rotates to the position cooperating with the limit switch, the limit switch will send a relevant signal to control the working state of the motor, so that the first gear stops at a preset angle.

6. The printer anti-paper-tearing device according to claim 2, characterized in that: The base frame is provided with a pressing groove at the paper outlet, which is used to cooperate with the paper pressing knife; when the paper pressing knife moves upward, it presses the printing paper into the pressing groove, and the printing paper is bent in the pressing groove to achieve the effect of not being easy to pull out.

7. The printer anti-paper-tearing device according to claim 3, characterized in that: The paper outlet is arranged parallel to one side of the mounting base, and the guide groove is arranged perpendicular to the paper outlet.

8. The printer anti-paper-tearing device according to claim 3, characterized in that: The second gear is a coaxial double gear structure, which allows the second gear to mesh with both the motor's main shaft gear and the first gear simultaneously.

9. The printer anti-paper-tearing device according to claim 4, characterized in that: The guide groove is an oblong hole.

10. The printer anti-paper-tearing device according to claim 2, characterized in that: The base frame and the top cover are detachably connected by screws.

Images