A printer fixed knife fixing structure and a printer

Abstract

The utility model discloses a kind of printer fixed knife fixing structure and printer, wherein, printer fixed knife fixing structure includes: printer shell, the printer shell is equipped with installation part, fixed knife support, it is connected with the installation part;Fixed knife is connected on the fixed knife support;Angle positioning structure, it is integrated in the installation part of the printer shell, the angle of the fixed knife is positioned by angle positioning structure;Connecting structure, in the middle of the installation part, for connecting the fixed knife support, fixed knife and printer shell.The utility model discloses printer fixed knife fixing structure, guarantees the durability and stability of fixed knife angle;And by the positioning installation structure of fixed knife is set in the middle of installation part, the torsional deformation tendency that can effectively constrain fixed knife support and fixed knife due to shear impact force is generated, so that shear force is more evenly transmitted to rigid printer shell and more convenient installation.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, and in particular to a printer blade fixing structure and a printer. Background Technology

[0002] The separate cutter of a thermal printer typically consists of a fixed blade and a moving blade. The fixed blade is mounted as a stationary component on a blade holder, while the moving blade moves under the drive mechanism, automatically cutting the paper through its interaction with the fixed blade. To improve cutting quality, a specific engagement angle must be maintained between the fixed and moving blades. Currently, this angle is usually achieved through an inclined support structure on the metal blade holder. A relevant structure can be found in Chinese patent application CN119078381A, which discloses a printer core, a thermal printer, and a thermal printer. However, the cutter is subjected to considerable shearing impact during each cut. Placing the angle positioning structure (such as an inclined support surface) on a separate metal blade holder requires this holder to be extremely robust to withstand long-term impacts without deformation. However, to control cost and weight, the holder is usually made of thin metal sheet by stamping and bending, resulting in limited rigidity. Prolonged use can affect the cutting performance of the blade. Furthermore, when the space or connecting structure on both sides of the blade holder mounting section is limited, there is also the problem of unreliable connection and fixation between the blade holder and the mounting section. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a printer blade fixing structure and a printer, wherein the printer blade fixing structure includes: Printer housing, wherein the printer housing is provided with a mounting part. A fixed blade support, which is connected to the mounting part; A fixed blade is connected to the fixed blade support; An angle positioning structure is integrated into the mounting part of the printer housing, and the angle of the fixed blade is positioned by the angle positioning structure; A connecting structure is located in the middle of the mounting part and is used to connect the fixed blade bracket, the fixed blade, and the printer housing.

[0004] Preferably, the connection structure is a bolted connection structure, with the connecting bolts passing sequentially through the fixed blade, the fixed blade bracket, and the mounting part of the printer housing.

[0005] Preferably, there are two angle positioning structures, which are respectively located on both sides of the mounting part.

[0006] Preferably, the tilt angle of the angle positioning structure is 1°-1.6°.

[0007] Preferably, the tilt angle of the angle positioning structure is one of 1° or 1.5°.

[0008] Preferably, the fixed blade bracket or the fixed blade is bolted to the angle positioning structure.

[0009] Preferably, the fixed blade holder has a bent portion; the bent portion is connected to the printer housing.

[0010] Preferably, the printer housing sidewall is provided with a positioning protrusion, and the fixed blade bracket and the fixed blade are provided with positioning through holes at positions corresponding to the positioning protrusion.

[0011] Preferably, the printer housing is provided with a guide structure on one side of the printhead plate, and the guide structure is used to position and guide the spring on one side of the printhead plate.

[0012] This utility model also provides a printer that uses any of the printer blade fixing structures described above.

[0013] The printer blade fixing structure provided by this utility model integrates the blade angle positioning structure into the printer housing. Since the printer housing itself is a large, heavy-duty reference component, its overall rigidity is far higher than that of a single stamped metal bracket, allowing it to better resist cutting forces. It is less prone to plastic deformation or springback under long-term use, thus ensuring the durability and stability of the blade angle. Furthermore, by placing the blade positioning and mounting structure in the middle of the mounting section, the problem of unreliable connection and fixation between the blade bracket and the mounting section is solved when space or connection structures on both sides of the blade bracket mounting section are limited. It also effectively restrains the torsional deformation tendency of the blade bracket and blade caused by shearing impact forces, thereby transmitting the shearing force more evenly to the rigid printer housing and facilitating installation. Attached Figure Description

[0014] Figure 1 A schematic diagram of the printer blade fixing structure provided for the implementation of this utility model; Figure 2 Exploded view of the printer blade fixing structure and printer housing; Figure 3 for Figure 2 Enlarged view of section A; The components are: 10. Printer housing; 11. Mounting part; 12. Fixed blade bracket; 121. Bending part; 122. First connecting through hole; 13. Fixed blade; 131. Positioning through hole; 132. Second connecting through hole; 14. Angle positioning structure; 15. Positioning protrusion; 16. Guide structure; 17. Spring. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods. Unless otherwise specified, the materials and reagents used in the following embodiments can be obtained commercially.

[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] This utility model provides a printer blade fixing structure and a printer, wherein the printer blade fixing structure includes: Printer housing 10, wherein the printer housing 10 is provided with a mounting part 11, A fixed blade support 12 is connected to the mounting part 11; Fixed blade 13 is connected to the fixed blade support 12; An angle positioning structure 14 is integrated into the mounting portion 11 of the printer housing 10, and the angle of the fixed blade 13 is positioned by the angle positioning structure 14.

[0019] In specific implementation, such as Figures 1-3 As shown, the printer blade fixing structure includes: The printer housing 10 has a mounting part 11 for mounting the fixed blade 13. The printer housing 10 and its mounting part 11 are existing structures and will not be described in detail here. The fixed tool bracket 12 is connected and fixed to the mounting part 11; the connection structure includes, but is not limited to, bolt connection, snap-fit ​​structure, etc. Fixed blade 13 is connected to fixed blade support 12; like Figure 2 As shown, the angle positioning structure 14 is integrated into the mounting portion 11 of the printer housing 10. The angle positioning structure 14 positions the angle of the fixed blade 13. Specifically, the angle positioning structure 14 is an inclined slope structure (e.g., Figure 3 (as shown) A connecting structure, located in the middle of the mounting portion 11, is used to connect the fixed blade support 12, the fixed blade 14, and the printer housing 10. By placing the positioning and mounting structure of the fixed blade 14 in the middle of the mounting portion 11, the problem of unreliable connection and fixation between the fixed blade support and the mounting portion is solved when the space or connecting structure on both sides of the fixed blade support mounting portion is limited. This connecting structure can effectively constrain the torsional deformation tendency of the fixed blade support 12 and the fixed blade 14 caused by shearing impact force, thereby transmitting the shearing force more evenly to the rigid printer housing. In addition, the middle connecting structure serves as an installation reference, which helps to quickly pre-position and fix the fixed blade support 12 and the fixed blade 14 during assembly, making installation more convenient.

[0020] The printer blade fixing structure provided in this embodiment integrates the blade angle positioning structure onto the printer housing. Since the printer housing itself is a large, heavy-duty reference component, its overall rigidity is far higher than that of a single stamped metal bracket, allowing it to better resist cutting forces. It is less prone to plastic deformation or springback under long-term use, thus ensuring the durability and stability of the blade angle. Furthermore, by placing the blade positioning and mounting structure in the center of the mounting section, the problem of unreliable connection and fixation between the blade bracket and the mounting section is solved when space or connection structures on both sides of the blade bracket mounting section are limited. It also effectively constrains the torsional deformation tendency of the blade bracket and blade caused by shearing impact forces, thereby transmitting the shearing force more evenly to the rigid printer housing and facilitating installation.

[0021] Furthermore, the connection structure is a bolted connection structure, with the connecting bolts passing sequentially through the fixed blade 13, the fixed blade bracket 12, and the mounting portion 11 of the printer housing 10.

[0022] In specific implementation, such as Figure 2 As shown, the bolt connection structure includes two second connecting through holes 132 in the middle of the fixed blade 13 and two first connecting through holes 122 in the middle of the fixed blade bracket 12. The bolt passes through the second connecting through holes 132 and the first connecting through holes 122 in sequence and is threadedly connected to the printer housing 10.

[0023] Furthermore, two angle positioning structures 14 are provided, and the two angle positioning structures 14 are respectively provided on both sides of the mounting part 11.

[0024] In specific implementation, two angle positioning structures 14 are provided, and the two angle positioning structures 14 are respectively located on both sides of the mounting part 11 in the horizontal direction. By providing two angle positioning structures 14 on both sides of the mounting part 11, simultaneous and balanced positioning of both ends of the fixed blade 13 is achieved, effectively preventing torsional deformation of the fixed blade due to unilateral force or inaccurate positioning, further ensuring the accuracy and stability of the matching angle between the fixed blade and the moving blade, making the cutting force more uniform and the paper cutting effect better.

[0025] Furthermore, the angle between the inclined surface of the angle positioning structure 14 and the vertical direction is 1°-1.6°. In this embodiment, the tilt angle of the angle positioning structure 14 is limited to the optimized range of 1°-1.6°, providing the best shearing engagement angle for the fixed blade 13 and the moving blade. This angle range ensures a smooth and effortless shearing process, effectively reducing cutting resistance and ensuring a clean, burr-free cut, significantly improving the cutting effect and tool life.

[0026] Furthermore, the tilt angle of the angle positioning structure 14 is either 1° or 1.5°. In this embodiment, the tilt angle is further specified as either 1° or 1.5°, providing a proven optimal angle selection. These two specific angle values ​​can precisely balance cutting sharpness and tool wear, providing the most optimized and standardized configuration options for printers of different models and power ratings, facilitating mass production and performance standardization.

[0027] Furthermore, the fixed blade support 12 or the fixed blade 13 is bolted to the angle positioning structure 14.

[0028] In specific implementation, such as Figure 2 As shown, the fixed tool bracket 12 has through holes on both sides (not marked in the figure), and the angle positioning structure 14 has a threaded groove. Bolts pass through the through holes and connect to the angle positioning structure 14, thereby achieving a detachable connection between the fixed tool bracket 12 and the angle positioning structure 14. In this embodiment, a bolt connection is used to achieve detachable fixing of the fixed tool bracket 12 or fixed tool 13 to the angle positioning structure 14. This connection method is simple and reliable, ensuring connection strength while facilitating on-site installation, debugging, and subsequent maintenance and replacement.

[0029] In specific implementation, such as Figure 2As shown, the fixed blade support 12 is provided with a bent portion 121; the bent portion 121 is connected to the printer housing 10 by bolts (not shown in the figure). By providing the bent portion 121 on the fixed blade support 12 and connecting it to the printer housing 10 through the bent portion, the connection stability between the fixed blade support 12 and the printer housing 10 is improved.

[0030] Furthermore, the printer housing 10 has a positioning protrusion 15 on its side wall, and the fixed blade support 12 and the fixed blade 13 have positioning through holes 131 at positions corresponding to the positioning protrusion 15. By cooperating with the positioning protrusion 15 on the side wall of the printer housing 10 and the corresponding positioning through holes 131 on the fixed blade support 12 and the fixed blade 13, rapid pre-positioning of the fixed blade 13 during installation is achieved. This structure effectively prevents parts from shifting during final tightening (such as bolting), ensuring that the assembly angle is completely consistent with the design angle, and improving assembly efficiency and accuracy.

[0031] In a specific implementation, the printer housing 10 is provided with a guide structure 16 on one side of the printhead plate. The guide structure 16 is used to position and guide the spring 17 on one side of the printhead plate. The connection structure between the printer housing 10, the printhead plate, and the spring 17 is prior art and will not be described in detail here. In this embodiment, the guide structure 16 for positioning and guiding the spring 17 on one side of the printhead plate is integrated into the printer housing 10, and the installation reference of the printhead pressure mechanism is also integrated into the housing. This ensures that the direction of the force of the printhead spring is accurate and does not deviate, making the pressure between the printhead and the roller uniform. This improves the printing quality and avoids abnormal interference to the printhead or cutter module due to improper spring installation, thus achieving coordinated and stable operation of the printing and cutting systems.

[0032] This utility model also provides a printer that uses any of the printer blade fixing structures described above.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A printer blade fixing structure, characterized in that, include: The printer housing (10) is provided with a mounting part (11). Fixed blade support (12), which is connected to the mounting part (11); Fixed blade (13) is connected to the fixed blade support (12); An angle positioning structure (14) is integrated into the mounting part (11) of the printer housing (10) to position the angle of the fixed blade (13); A connecting structure is provided in the middle of the mounting part (11) for connecting the fixed blade bracket (12), the fixed blade (13) and the printer housing (10).

2. The printer blade fixing structure according to claim 1, characterized in that: The connection structure is a bolted connection structure, with the connecting bolts passing through the fixed blade (13), the fixed blade bracket (12) and the mounting part (11) of the printer housing (10) in sequence.

3. The printer blade fixing structure according to claim 1, characterized in that: Two angle positioning structures (14) are provided, and the two angle positioning structures (14) are respectively provided on both sides of the mounting part (11).

4. The printer blade fixing structure according to claim 1, characterized in that: The tilt angle of the angle positioning structure (14) is 1°-1.6°.

5. The printer blade fixing structure according to claim 4, characterized in that: The tilt angle of the angle positioning structure (14) is either 1° or 1.5°.

6. The printer blade fixing structure according to claim 1, characterized in that: The fixed blade support (12) or the fixed blade (13) is bolted to the angle positioning structure (14).

7. The printer blade fixing structure according to claim 1, characterized in that: The fixed blade holder (12) is provided with a bending part (121); the bending part (121) is connected to the printer housing (10).

8. The printer blade fixing structure according to claim 1, characterized in that: The printer housing (10) has a positioning protrusion (15) on its side wall, and the fixed blade bracket (12) and the fixed blade (13) have positioning through holes (131) at positions corresponding to the positioning protrusion (15).

9. The printer blade fixing structure according to any one of claims 1-8, characterized in that: The printer housing (10) is provided with a guide structure (16) on one side of the printhead plate. The guide structure (16) is used to position and guide the spring (17) on one side of the printhead plate.

10. A printer, characterized in that: The printer blade fixing structure as described in any one of claims 1-9 is adopted.

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