A device for preventing paper tearing by a paper cutter

Abstract

The application discloses a device for preventing paper tearing by a paper tearing cutter, which comprises a printer body, a fixing assembly and a buffer assembly, an inner lining support is arranged on the upper inner side of the printer body, a transmission mechanism is installed on the lower inner side of the printer body, a paper feeding channel is arranged at the gap between the printer body and the inner lining support, and a printing paper is arranged in the paper feeding channel; a fixing assembly is arranged at the front end of the inner lining support, and a paper tearing cutter body is connected to the outer side of the fixing assembly and used for fixedly mounting the paper tearing cutter body. The application belongs to the technical field of printers, and aims to solve the problem that the paper tearing cutter body is contacted in the process of paper feeding from the front and outside, and the paper tearing saw teeth of the paper tearing cutter body scratch the paper surface. The application achieves the technical effect of solving the problem that the paper tearing cutter body is contacted in the process of paper feeding from the front and outside, and the paper tearing saw teeth of the paper tearing cutter body scratch the paper surface.

Description

Technical Field

[0001] This application relates to the field of printer technology, and more specifically to a device for preventing paper tearing by a paper cutter. Background Technology

[0002] A printer is a computer output device used to print computer-processed results onto relevant media. Printers are now widely used across various industries. The paper tearer is typically located below or to the side of the printer's paper exit. It uses a sharp metal or plastic blade to cut paper by pressing or slicing. Its design is inspired by the frequent need to tear paper in office settings, especially when printing documents, receipts, or affixing labels, where users need to quickly separate the paper.

[0003] For example, a paper tearing blade structure for a thermal printer, disclosed in Chinese patent publication number CN 220147024 U, describes a paper tearing blade structure in which the tearing force can be decomposed into horizontal and vertical forces applied to the thermal printing paper during the tearing operation.

[0004] However, most printers nowadays have a paper tearer at the paper output, which makes it easy to tear off the paper after printing. But during the paper feed, it will come into contact with the paper tearer, causing the tearing teeth of the paper tearer to scratch the paper surface. If the scratches are on the thermal layer of the printed paper, black marks will appear due to heat, affecting the user experience. Utility Model Content

[0005] Therefore, this application provides a device to prevent paper tearing blades from scratching the paper, in order to solve the problem that in the existing process of paper feeding outwards, the paper tearing blade body comes into contact with the paper tearing blade body, causing the tearing teeth of the paper tearing blade body to scratch the paper surface.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A device for preventing paper tearing by a paper cutter includes a printer body, a fixing component, and a buffer component. An inner liner support is provided on the upper inner side of the printer body, and a transmission mechanism is installed on the lower inner side of the printer body. A paper feeding channel is provided in the gap between the printer body and the inner liner support, and printing paper is placed through the inside of the paper feeding channel.

[0008] The front end of the inner lining bracket is provided with a fixing component, and the outside of the fixing component is connected to the paper tearing knife body for fixing and installing the paper tearing knife body.

[0009] The lower front end of the inner liner support is provided with a buffer component that contacts the printing paper, and the buffer component is located below and behind the paper tearer body.

[0010] Furthermore, the fixing component includes a positioning cylinder, a mounting column, and a circular hole. The two sets of positioning cylinders are respectively fixedly installed on the outer front end of the inner lining bracket, and the outer front end of the inner lining bracket is also provided with a mounting column located outside the positioning cylinder. The mounting column is equipped with a matching screw.

[0011] Furthermore, the front end of the inner lining bracket has a through hole, and the inside of the hole has a stepped hole.

[0012] Furthermore, the rear end of the paper tearer body is provided with two sets of positioning holes and mounting holes, and the positioning holes and mounting holes are concentrically arranged with the positioning cylinder and the mounting column, respectively.

[0013] Furthermore, a through hole is provided at the rear edge of the paper tearing knife body, and paper tearing serrations are provided at the front end of the paper tearing knife body.

[0014] Furthermore, the buffer assembly includes a buffer rod, a spring, and a connecting post. The buffer rod is installed on the lower front end of the inner liner support, and the lower surface of the buffer rod is provided with a paper-pressing surface.

[0015] Furthermore, connecting posts are fixedly installed on the left and right sides of the upper end of the buffer rod, and springs are provided on the outer side of the connecting posts, and threaded holes adapted to screws are opened inside the connecting posts.

[0016] Compared with the prior art, this application has at least the following beneficial effects:

[0017] 1. Connecting posts are fixedly installed on the left and right sides of the upper end of the buffer rod. Springs are provided on the outer side of the connecting posts. When paper needs to be torn, the printing paper moves closer to the tearing teeth under the action of external force. At the same time, the buffer rod is compressed by the force of the printing paper and moves in the opposite direction to achieve the effect of tearing paper. After the paper is torn, due to the elasticity of the spring, the buffer rod will push against the printing paper again, so that the printing paper moves away from the tearing teeth, thereby preventing the tearing teeth of the paper tearer body from scratching the printing paper.

[0018] 2. Two sets of positioning holes and mounting holes are respectively opened through the rear end of the paper tearer body. The positioning holes and mounting holes are concentrically set with the positioning cylinder and the mounting column, respectively, so as to facilitate the paper tearer body to be installed on the outside of the positioning cylinder and the mounting column through the positioning holes and mounting holes, thereby improving the positioning effect of the paper tearer body before fixing. Attached Figure Description

[0019] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are capable of making conventional adjustments or further optimizations to the addition / reduction / classification of certain units, their specific shapes, positional relationships, connection methods, size ratios, etc.

[0020] Figure 1 A schematic diagram of the overall structure of a device for preventing a paper cutter from slicing paper, provided in one embodiment of this application;

[0021] Figure 2 A schematic diagram of the overall structure of the printer body and the transmission mechanism for a device to prevent paper tearing by a paper cutter, provided in one embodiment of this application;

[0022] Figure 3 A side cross-sectional view of a device for preventing a paper cutter from slicing paper, provided in one embodiment of this application;

[0023] Figure 4 A schematic diagram of the overall structure of the connection between the inner liner support and the paper tearer body of a device for preventing paper tearing by a paper tearer according to an embodiment of this application;

[0024] Figure 5 A schematic diagram of the overall structure of the connection between the inner liner support and the buffer rod of a device for preventing paper tearing by a paper cutter, provided in one embodiment of this application;

[0025] Figure 6 A schematic diagram of the overall structure of a device for preventing a paper cutter from slicing paper, provided in one embodiment of this application, showing the connection between the positioning cylinder and the inner liner bracket;

[0026] Figure 7 A schematic diagram of the overall structure of a device for preventing a paper tearer from cutting paper, provided in one embodiment of this application, showing the connection between the paper tearer body and the mounting hole;

[0027] Figure 8 This is a schematic diagram of the overall structure of a device for preventing a paper cutter from slicing paper, provided in one embodiment of this application, showing the connection between the connecting column and the buffer rod.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Printer body; 2. Printing paper; 3. Inner liner support; 4. Tear blade body; 5. Buffer rod; 6. Spring; 7. Screw; 8. Transmission mechanism; 9. Paper path; 10. Positioning cylinder; 11. Mounting post; 12. Round hole; 13. Stepped hole; 14. Positioning hole; 15. Mounting hole; 16. Through hole; 17. Tear serrations; 18. Connecting post; 19. Threaded hole; 20. Paper pressing surface. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 8 As shown in the embodiment of this application, a device for preventing paper tearing by a paper cutter includes: a printer body 1, a fixing component and a buffer component. An inner liner bracket 3 is provided on the upper side inside the printer body 1, and a transmission mechanism 8 is installed on the lower side inside the printer body 1. A paper feeding channel 9 is provided at the gap between the printer body 1 and the inner liner bracket 3, and a printing paper 2 is placed through the inside of the paper feeding channel 9.

[0032] The transmission mechanism 8 is activated to move the printing paper 2 within the paper feeding channel 9. The paper feeding channel 9 provides guidance and support for the printing paper 2 during the paper tearing process, preventing it from shifting or bending.

[0033] The front end of the inner lining bracket 3 is provided with a fixing component, and the outer side of the fixing component is connected to the paper tearing knife body 4 for fixing and installing the paper tearing knife body 4. The fixing component includes a positioning cylinder 10, a mounting post 11 and a round hole 12. Two sets of positioning cylinders 10 are respectively fixedly installed on the outer side of the front end of the inner lining bracket 3, and the outer side of the front end of the inner lining bracket 3 is also provided with a mounting post 11 located outside the positioning cylinder 10. The mounting post 11 is equipped with a matching screw 7.

[0034] The inner lining bracket 3 has a through hole 12 at its front end. The positioning cylinder 10, the mounting column 11, and the hole 12 all play a good role in positioning and installing the paper tearer body 4, making it easy to securely install the paper tearer body 4 on the lower front end of the inner lining bracket 3.

[0035] Meanwhile, a stepped hole 13 is provided inside the round hole 12. During the installation process, in order to prevent the buffer rod 5 from coming out, the connecting post 18 on the buffer rod 5 can be made into an elastic buckle. The buckle is inserted into the stepped hole 13 of the inner lining bracket 3 by deformation. The buckle is locked in the stepped hole 13 to achieve the effect of not coming out, thus improving the installation effect.

[0036] The rear end of the paper tearer body 4 is provided with two sets of positioning holes 14 and mounting holes 15. A through hole 16 is provided through the rear edge of the paper tearer body 4, and the front end of the paper tearer body 4 is provided with paper tearing serrations 17. The through hole 16 and the round hole 12 are arranged in a one-to-one correspondence.

[0037] The positioning hole 14 and the mounting hole 15 are concentrically arranged with the positioning cylinder 10 and the mounting post 11, respectively, so that the paper tearer body 4 can be engaged and installed on the outside of the positioning cylinder 10 and the mounting post 11 through the positioning hole 14 and the mounting hole 15, thereby improving the positioning effect of the paper tearer body 4 before fixing.

[0038] The buffer assembly includes a buffer rod 5, a spring 6, and a connecting post 18. The buffer rod 5 is installed on the lower front end of the inner liner bracket 3, and a paper-pressing surface 20 is provided on the lower surface of the buffer rod 5. The connecting post 18 is fixedly installed on the left and right sides of the upper end of the buffer rod 5, and a spring 6 is provided on the outer side of the connecting post 18. The connecting post 18 has a threaded hole 19 that matches the screw 7.

[0039] The upper end of the spring 6 contacts the stepped hole 13 of the inner liner bracket 3, which facilitates the movement of the connecting column 18 and the buffer rod 5 by the elastic force of the spring 6, so that the paper pressing surface 20 on the lower surface of the buffer rod 5 can contact the printing paper 2.

[0040] Working principle

[0041] First, install the paper tearer body 4 on the inner liner bracket 3. Insert the two positioning holes 14 on the paper tearer body 4 into the positioning cylinder 10 of the inner liner bracket 3. At this time, the mounting hole 15 on the paper tearer body 4 is concentric with the mounting post 11 on the inner liner bracket 3. Then, rotate the two screws 7 into the mounting post 11 and tighten them to fix the paper tearer body 4.

[0042] Two springs 6 are inserted into the stepped holes 13 of the inner liner bracket 3. Then, the two connecting posts 18 on the buffer rod 5 are passed through the round hole 12 and the through hole 16 in sequence. Two screws 7 are screwed into the threaded holes 19 on the connecting posts 18 of the buffer rod 5 respectively. The outer diameter of the screw 7 nut is larger than the diameter of the through hole 16 on the paper tearer to prevent the buffer rod 5 from coming out. Because the buffer rod 5 is subjected to the elastic force of the springs 6, the paper pressing surface 20 of the buffer rod 5 is higher than the paper tearing saw teeth 17. When the transmission mechanism 8 is started, the printing paper 2 moves forward in the paper path 9 under the action of the transmission mechanism 8. The paper pressing surface 20 of the buffer rod 5 will press the printing paper 2 down under the action of the springs 6, so that the printing paper 2 is away from the paper tearing saw teeth 17, thereby preventing the paper tearing saw teeth 17 from scratching the paper. When paper needs to be torn, the printing paper 2 moves closer to the tearing teeth 17 under the action of external force. At the same time, the buffer rod 5 is compressed by the force of the printing paper 2 and moves the spring 6 in the opposite direction to achieve the effect of tearing paper. After the paper is torn, due to the elasticity of the spring 6, the buffer rod 5 will push against the printing paper 2 again, so that the printing paper 2 is away from the tearing teeth 17, thereby preventing the tearing teeth 17 of the paper tearer body 4 from scratching the printing paper 2.

[0043] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A device for preventing paper tearing by a paper cutter, comprising a printer body (1), a fixing component, and a buffer component, characterized in that, The printer body (1) has an inner liner bracket (3) on its upper interior side, a transmission mechanism (8) is installed on the lower interior side of the printer body (1), and a paper feeding channel (9) is provided in the gap between the printer body (1) and the inner liner bracket (3). Printing paper (2) is placed through the inside of the paper feeding channel (9). The front end of the inner lining bracket (3) is provided with a fixing component, and the outside of the fixing component is connected to the paper tearing knife body (4) for fixing and installing the paper tearing knife body (4). The inner liner bracket (3) has a buffer component that contacts the printing paper (2) on its lower front side, and the buffer component is located below and behind the paper tearer body (4).

2. The device for preventing a paper tearer from cutting paper according to claim 1, characterized in that, The fixing component includes a positioning cylinder (10), a mounting column (11), and a circular hole (12). The two sets of positioning cylinders (10) are respectively fixedly installed on the outer front end of the inner lining bracket (3), and the outer front end of the inner lining bracket (3) is also provided with a mounting column (11) located outside the positioning cylinder (10). The mounting column (11) is equipped with a matching screw (7).

3. The device for preventing a paper tearer from cutting paper according to claim 2, characterized in that, The front end of the inner lining bracket (3) is provided with a circular hole (12), and a stepped hole (13) is provided inside the circular hole (12).

4. The device for preventing a paper tearer from cutting paper according to claim 1, characterized in that, The rear end of the paper tearer body (4) is provided with two sets of positioning holes (14) and mounting holes (15), and the positioning holes (14) and mounting holes (15) are respectively concentrically arranged with the positioning cylinder (10) and the mounting column (11).

5. The device for preventing a paper tearer from cutting paper according to claim 4, characterized in that, A through hole (16) is provided at the rear edge of the paper tearing knife body (4), and a paper tearing saw tooth (17) is provided at the front end of the paper tearing knife body (4).

6. The device for preventing a paper tearer from cutting paper according to claim 1, characterized in that, The buffer assembly includes a buffer rod (5), a spring (6) and a connecting column (18). The buffer rod (5) is installed on the lower front end of the inner liner bracket (3), and the lower surface of the buffer rod (5) is provided with a paper pressing surface (20).

7. The device for preventing a paper tearer from cutting paper according to claim 6, characterized in that, The upper left and right sides of the buffer rod (5) are respectively fixedly installed with connecting columns (18), and springs (6) are provided on the outside of the connecting columns (18), and threaded holes (19) adapted to screws (7) are opened inside the connecting columns (18).

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