A printhead rubber roller mounting assembly

Abstract

The application provides a printing head rubber roller mounting assembly, which comprises a rack, a locking mechanism, and an elastic member, wherein the rack is provided with a groove, the locking mechanism is connected to the rack, one end of the elastic member is connected to the locking mechanism, and the other end of the elastic member is connected to the rack; wherein the middle of the locking mechanism is provided with a mounting hole, one end of the elastic member is connected to the inner wall of the mounting hole, and the other end of the elastic member is connected to the inner side wall of the rack; and the two ends of the locking mechanism are both provided with locking ports. The printing head rubber roller mounting assembly is easy to use and convenient to install. When in use, the printing head rubber roller is mounted at the groove of the rack, the two ends of the printing rubber roller are locked through the locking mechanism, a circular boss is arranged on the front side of the first side plate and the second side plate, the first side plate and the second side plate are respectively locked in the adjusting plate and the first rotating plate, the printing head rubber roller can be prevented from slipping off during installation and use, the material and installation precision requirements are reduced, and the assembly convenience is improved.

Description

Technical Field

[0001] This application belongs to the technical field of label printing equipment, and particularly relates to a printhead roller mounting assembly for a label printer. Background Technology

[0002] In existing label printers, the fixing of the printhead rollers for 2-inch and 3-inch printers is mostly designed using a through-shaft structure, connecting the roller fixing hooks, thermal printhead substrate, and frame via a single optical shaft. During printhead roller installation, the three modules must be stacked and connected via the shaft, making assembly difficult. Furthermore, the concentricity, hole diameter accuracy, and shaft diameter accuracy of the three modules are all critical. In terms of raw material processing, insufficient substrate flatness, concentricity deviation of the holes, and excessively large or small hole diameter tolerances can lead to component slippage during installation and use. These problems all affect the printing effect of the printhead during use, resulting in uneven printing, pale colors, and blurry prints.

[0003] Therefore, how to reduce the installation accuracy requirements of the printhead roller and prevent the components from slipping off during installation and use is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This application provides a printhead roller mounting assembly to solve the problem in existing label printers where the printhead roller has high mounting precision and is prone to partial slippage during installation and use.

[0005] This application provides a printhead rubber roller mounting assembly, including: a frame, the frame having grooves for rotatably connecting the printhead rubber roller;

[0006] A locking mechanism, connected to the frame, is used to lock the printhead roller;

[0007] An elastic element, one end of which is connected to the locking mechanism, and the other end of which is connected to the frame;

[0008] The locking mechanism has a mounting hole in the middle, one end of the elastic element is connected to the inner wall of the mounting hole, and the other end of the elastic element is connected to the inner side wall of the frame; both ends of the locking mechanism are provided with locking ports for locking the two ends of the printhead roller.

[0009] The frame includes a base, a first side plate and a second side plate. Both ends of the printhead roller and both ends of the locking mechanism are rotatably connected to the first side plate and the second side plate respectively via a first rotating shaft.

[0010] The groove includes a first groove and a second groove. The first groove is located at the top of the first side plate, and the second groove is located at the top of the second side plate. The left end of the first rotating shaft passes through the left end of the locking mechanism and is rotatably connected in the first groove. The right end of the first rotating shaft passes through the right end of the locking mechanism and is rotatably connected in the second groove.

[0011] The locking mechanism includes an adjusting plate, a first rotating plate, and a support plate. The support plate is connected between the adjusting plate and the first rotating plate, and the mounting hole is provided on the support plate. The left end of the first rotating shaft passes through the left end of the adjusting plate and is rotatably connected in the first groove. The right end of the first rotating shaft passes through the right end of the first rotating plate and is rotatably connected in the second groove. The top ends of the adjusting plate and the first rotating plate are both provided with the locking opening.

[0012] Optionally, the front sides of the first side plate and the second side plate are provided with circular bosses, and the front sides of the adjusting plate and the first rotating plate are provided with bayonets, and the circular bosses are rotatably connected in the bayonets.

[0013] Optionally, the adjusting plate includes a second rotating plate and a handle. The handle is connected to the outer wall of the second rotating plate. The support plate is connected between the first rotating plate and the second rotating plate. The left end of the first rotating shaft passes through the left end of the second rotating plate and is rotatably connected in the first groove. The top end of the second rotating plate is provided with the locking port.

[0014] Optionally, a first limiting plate is provided on the inner wall of the first side plate, and a second limiting plate is provided on the inner wall of the second side plate. The first limiting plate is located directly below the first rotating plate, and the second limiting plate is located directly below the second rotating plate.

[0015] Optionally, a second rotating shaft is provided on the inner wall of the frame, and the elastic element includes a winding part, a first locking part and a second locking part. The winding part is connected between the first locking part and the second locking part, and the winding part is sleeved on the second rotating shaft. The first locking part is connected to the inner wall of the frame, and the second locking part abuts against the mounting hole.

[0016] Optionally, the second rotating shaft includes two pins, and the mounting hole includes two oblong holes. The two pins are respectively fixed on the inner walls of both ends of the frame, and the two oblong holes are respectively located on both sides of the locking mechanism. The elastic element includes two torsion springs. The middle of the torsion spring is sleeved on the corresponding pin, the first end of the torsion spring is connected to the inner wall of the frame, and the second end of the torsion spring abuts against the corresponding mounting hole.

[0017] Optionally, the geometric dimensions of the first groove, the second groove, and the locking port are all adapted to the geometric dimensions of the first rotating shaft.

[0018] Optionally, an anti-slip groove is provided on the inner wall of one end of the mounting hole.

[0019] Optionally, the circular boss includes an arc-shaped end and a smooth end. The bottom end of the smooth end is connected to the front side of the first side plate or the second side plate, and the top end of the smooth end is connected to the arc-shaped end. The arc-shaped end is rotatably connected within the bayonet.

[0020] This application provides a printhead roller mounting assembly. This structure is easy to use and install. In use, the printhead roller is installed in the groove of the frame, and the two ends of the printhead roller are locked by a locking mechanism. Circular bosses are also provided on the front sides of the first and second side plates, so that the first and second side plates are locked in the adjusting plate and the first rotating plate, respectively. This can prevent the printhead roller from slipping during installation and use, reduce material and installation accuracy requirements, and increase assembly convenience. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0023] Figure 1 A schematic diagram of the printhead roller mounting assembly provided in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the frame structure in the printhead roller mounting assembly provided in the embodiments of this application;

[0025] Figure 3 This is a schematic diagram of the locking mechanism in the printhead roller mounting assembly provided in the embodiments of this application;

[0026] Figure 4 This is a schematic diagram of the elastic element in the printhead roller mounting assembly provided in the embodiments of this application;

[0027] Figure 5 This is a schematic diagram of the circular boss in the printhead roller mounting assembly provided in an embodiment of this application.

[0028] In the diagram: 1. Frame; 11. Groove; 111. First groove; 112. Second groove; 12. Base; 13. First side plate; 131. First groove; 14. Second side plate; 141. Second limiting plate; 15. First rotating shaft; 16. Circular boss; 161. Smooth end; 162. Arc end; 17. Second rotating shaft; 171. Pin; 2. Locking mechanism; 21. Mounting hole; 211. Waist-shaped hole; 212. Anti-slip groove; 22. Locking port; 23. Adjusting plate; 231. Second rotating plate; 232. Handle; 233. Bayonet; 24. First rotating plate; 25. Support plate; 3. Elastic element; 31. Winding part; 32. First locking part; 33. Second locking part; 34. Torsion spring; 4. Print head roller. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] This application provides a printhead roller mounting assembly to address the problem in existing label printers where the printhead roller requires high mounting precision and is prone to partial slippage during installation and use. The following description, in conjunction with the accompanying drawings, will illustrate this issue.

[0031] like Figure 1-5 As shown, a printhead roller mounting assembly includes a frame 1, a locking mechanism 2, and an elastic element 3. The frame 1 has a groove 11, within which the printhead roller 4 is mounted and can rotate. The locking mechanism 2 connects to the frame 1 and locks the printhead roller 4 onto the frame 1. One end of the elastic element 3 is connected to the locking mechanism 2, and the other end is connected to the frame 1. The locking mechanism 2 has a mounting hole 21 in the middle, with one end of the elastic element 3 connected to the inner wall of the mounting hole 21 and the other end connected to the inner side wall of the frame 1. Both ends of the locking mechanism 2 have locking lugs 22 for locking both ends of the printhead roller 4.

[0032] In this embodiment, the two ends of the printhead roller 4 are installed in the groove 11 of the frame 1, and the two ends of the printhead roller 4 are locked by the locking mechanism 2. The elastic element 3 can adjust the gap between the upper locking stop 22 of the locking mechanism 2 and the frame 1, thereby adjusting the degree of locking of the printhead roller 4 by the locking mechanism 2. Compared with the traditional structure, this printhead roller mounting assembly eliminates the optical axis mounting method, reduces the amount of material, and lowers the cost of the core mechanism; the locking mechanism 2 and the frame 1 are easy to install and operate; the frame 1 is made of die-cast material, and the locking mechanism is made of stamped material, resulting in high material consistency, fewer variables in mass production after controlling the accuracy of key dimensions, and high stability; the frame 1 and the locking mechanism 2 are mutually complementary, with no other intersecting structures, resulting in a short dimensional chain and controllable precision.

[0033] The frame 1 includes a base 12, a first side plate 13, and a second side plate 14. Both ends of the printhead roller 4 and both ends of the locking mechanism 2 are rotatably connected to the first side plate 13 and the second side plate 14 respectively via a first rotating shaft 15. The groove 11 includes a first groove 111 and a second groove 112. The first groove 111 is located at the top of the first side plate 13, and the second groove 112 is located at the top of the second side plate 14. The left end of the first rotating shaft 15 passes through the left end of the locking mechanism 2 and is rotatably connected to the first groove 111, and the right end of the first rotating shaft 15 passes through the right end of the locking mechanism 2 and is rotatably connected to the second groove 112. The locking mechanism 2 includes an adjusting plate 23, a first rotating plate 24, and a support plate 25. The support plate 25 is connected between the adjusting plate 23 and the first rotating plate 24, and a mounting hole 21 is provided on the support plate 25. The left end of the first rotating shaft 15 passes through the left end of the adjusting plate 23 and is rotatably connected in the first groove 111. The right end of the first rotating shaft 15 passes through the right end of the first rotating plate 24 and is rotatably connected in the second groove 112. The top ends of both the adjusting plate 23 and the first rotating plate 24 are provided with locking openings 22. The front sides of the first side plate 13 and the second side plate 14 are provided with circular bosses 16, and the front sides of the adjusting plate 23 and the first rotating plate 24 are provided with bayonets 233. The circular bosses 16 are rotatably connected in the bayonets 233. The geometric dimensions of the first groove 111, the second groove 112, and the locking openings 22 are all adapted to the geometric dimensions of the first rotating shaft 15.

[0034] In this embodiment, the user can drive the first rotating plate 24 to rotate along the circular boss 16 by adjusting the plate 23, thereby increasing the gap between the first groove 111 and the second groove 112 and the locking port 22. At this time, the elastic member 3 is in a deformed state, and the left end of the printhead roller 4 is installed in the first groove 111 of the first side plate 13 and the right end of the printhead roller 4 is installed in the second groove 112 of the second side plate 14 through the first rotating shaft 15. After the adjusting plate 23 is released, the first rotating plate 24 rotates along the circular boss 16 under the reset of the elastic member 3, thereby decreasing the gap between the first groove 111 and the second groove 112 and the locking port 22, and locking the printhead roller 4 onto the bracket 1. This can prevent the printhead roller 4 from shaking during operation and improve the printing effect. In addition, the locking port 22 can adopt a C-shaped structure, so that the adjusting plate 23 and the first rotating plate 24 form a C-shaped claw, which can increase the fixing effect of the printhead roller 4. The circular boss 16 can serve as a rotating fulcrum on the locking mechanism 2, and also has a locking function, which reduces the requirements for materials and installation accuracy while increasing the ease of assembly.

[0035] Based on the above-described embodiments, this application also proposes the following embodiments.

[0036] In one embodiment, the adjusting plate 23 includes a second rotating plate 231 and a handle 232. The handle 232 is connected to the outer wall of the second rotating plate 231. The support plate 25 is connected between the first rotating plate 24 and the second rotating plate 231. The left end of the first rotating shaft 15 passes through the left end of the second rotating plate 231 and is rotatably connected in the first groove 111. The top end of the second rotating plate 231 is provided with a locking port 22.

[0037] The first side plate 13 has a first limiting plate 131 on its inner wall and the second side plate 14 has a second limiting plate 141 on its inner wall. The first limiting plate 131 is located directly below the first rotating plate 24 and the second limiting plate 141 is located directly below the second rotating plate 231.

[0038] In this embodiment, the user can adjust the rotation direction of the first rotating plate 24 and the second rotating plate 231 by operating the handle 232, thereby loosening and locking the printing roller 4, which facilitates the installation and use of the printing roller. In addition, the first limiting plate 131 and the second limiting plate 141 can respectively limit the rotation position of the second rotating plate 231 and the first rotating plate 24, preventing the printing roller from slipping and improving the printing effect.

[0039] In one embodiment, a second rotating shaft 17 is provided on the inner wall of the frame 1, and the elastic element 3 includes a winding part 31, a first locking part 32 and a second locking part 33. The winding part 31 is connected between the first locking part 32 and the second locking part 33, and the winding part 31 is sleeved on the second rotating shaft 17. The first locking part 32 is connected to the inner wall of the frame 1, and the second locking part 33 abuts against the mounting hole 21.

[0040] The second rotating shaft 17 includes two pins 171, and the mounting hole 21 includes two oblong holes 211. The two pins 171 are respectively fixed on the inner walls of both ends of the frame 1, and the two oblong holes 211 are respectively located on both sides of the locking mechanism 2. The elastic element 3 includes two torsion springs 34. The middle of the torsion spring 34 is sleeved on the corresponding pin 171. The first end of the torsion spring 34 is connected to the inner wall of the frame 1, and the second end of the torsion spring 34 abuts against the corresponding mounting hole 21.

[0041] In this embodiment, the elastic element 3 consists of two torsion springs 34, the second rotating shaft 17 consists of two pins 171, and the mounting hole 21 adopts two oblong holes 211. The middle of the torsion spring 34 is a winding part 31, and the two ends of the torsion spring 34 are a first locking part 32 and a second locking part 33, respectively. The winding part 31 can rotate on the second rotating shaft 17. It is connected together by the first locking part 32 and the second locking part 33, which can realize the smooth movement of the first rotating plate 24 and the second rotating plate 231.

[0042] In one embodiment, an anti-slip groove 212 is provided on the inner wall of one end of the mounting hole 21.

[0043] In this embodiment, the second locking part 33 can be limited in the anti-slip groove 212, which can prevent the torsion spring 34 from slipping during use and ensure the overall printing effect.

[0044] In one embodiment, the circular boss includes an arc-shaped end and a smooth end, the bottom end of the smooth end is connected to the front side of the first side plate or the second side plate, the top end of the smooth end is connected to the arc-shaped end, and the arc-shaped end is rotatably connected within the bayonet.

[0045] In this embodiment, when the locking mechanism 2 moves downward, the first rotating plate 24 and the second rotating plate 231 first come into contact with the arc-shaped end, and then connect with the smooth end. The whole process is smooth and can prevent the first rotating plate 24 and the second rotating plate 231 from slipping off, thus improving the printing effect.

[0046] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0047] In the description of this application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0048] In this application, unless otherwise expressly specified and limited, for example, a connection may be a fixed connection, a detachable connection, or an integral part; a connection may be a mechanical connection or an electrical connection; a connection may be direct or indirect through an intermediate medium; or a connection within two elements or an interaction between two elements. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0050] The above provides a detailed description of the printhead roller mounting assembly provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A print head rubber roller mounting assembly characterized by, include: A frame, the frame having grooves for rotatably connecting the printhead roller; A locking mechanism, connected to the frame, is used to lock the printhead roller; An elastic element, one end of which is connected to the locking mechanism, and the other end of which is connected to the frame; The locking mechanism has a mounting hole in the middle, one end of the elastic element is connected to the inner wall of the mounting hole, and the other end of the elastic element is connected to the inner side wall of the frame; both ends of the locking mechanism are provided with locking ports for locking the two ends of the printhead roller. The frame includes a base, a first side plate and a second side plate. Both ends of the printhead roller and both ends of the locking mechanism are rotatably connected to the first side plate and the second side plate respectively via a first rotating shaft. The groove includes a first groove and a second groove. The first groove is located at the top of the first side plate, and the second groove is located at the top of the second side plate. The left end of the first rotating shaft passes through the left end of the locking mechanism and is rotatably connected in the first groove. The right end of the first rotating shaft passes through the right end of the locking mechanism and is rotatably connected in the second groove. The locking mechanism includes an adjusting plate, a first rotating plate, and a support plate. The support plate is connected between the adjusting plate and the first rotating plate, and the mounting hole is provided on the support plate. The left end of the first rotating shaft passes through the left end of the adjusting plate and is rotatably connected in the first groove. The right end of the first rotating shaft passes through the right end of the first rotating plate and is rotatably connected in the second groove. The top ends of the adjusting plate and the first rotating plate are both provided with the locking opening. Both the first side plate and the second side plate have a circular boss on their front sides, and both the adjusting plate and the first rotating plate have a bayonet on their front sides. The circular boss is rotatably connected to the bayonet. The circular boss includes an arc-shaped end and a smooth end. The bottom end of the smooth end is connected to the front side of the first side plate or the second side plate, and the top end of the smooth end is connected to the arc-shaped end. The arc-shaped end is rotatably connected to the bayonet.

2. The print head rubber roller mounting assembly of claim 1, wherein, The adjusting plate includes a second rotating plate and a handle. The handle is connected to the outer wall of the second rotating plate. The support plate is connected between the first rotating plate and the second rotating plate. The left end of the first rotating shaft passes through the left end of the second rotating plate and is rotatably connected in the first groove. The top of the second rotating plate is provided with the locking port.

3. The print head rubber roller mounting assembly of claim 2, wherein, The inner wall of the first side plate is provided with a first limiting plate, and the inner wall of the second side plate is provided with a second limiting plate. The first limiting plate is located directly below the first rotating plate, and the second limiting plate is located directly below the second rotating plate.

4. The print head rubber roller mounting assembly of claim 1, wherein, The inner wall of the frame is provided with a second rotating shaft. The elastic element includes a winding part, a first locking part and a second locking part. The winding part is connected between the first locking part and the second locking part. The winding part is sleeved on the second rotating shaft. The first locking part is connected to the inner wall of the frame. The second locking part abuts against the mounting hole.

5. The print head rubber roller mounting assembly of claim 4, wherein, The second rotating shaft includes two pins, and the mounting hole includes two oblong holes. The two pins are respectively fixed on the inner walls of both ends of the frame, and the two oblong holes are respectively located on both sides of the locking mechanism. The elastic element includes two torsion springs. The middle of the torsion spring is sleeved on the corresponding pin, the first end of the torsion spring is connected to the inner wall of the frame, and the second end of the torsion spring abuts against the corresponding mounting hole.

6. The print head rubber roller mounting assembly of claim 1, wherein, The geometric dimensions of the first groove, the second groove, and the locking opening are all adapted to the geometric dimensions of the first rotating shaft.

7. The print head rubber roller mounting assembly of claim 1, wherein, An anti-slip groove is provided on the inner wall of one end of the mounting hole.

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