Printer shaft core with good wear resistance

Abstract

The utility model relates to the technical field of printer central spindles, and discloses a printer central spindle with good wear resistance, which comprises a central spindle body and central spindle rollers, the central spindle rollers are fixedly mounted at two ends of the central spindle body, a protective sleeve is slidably mounted on the central spindle body, and mounting rings are slidably mounted on the two central spindle rollers. Inserting grooves are formed in the side walls of the two ends of the protecting sleeve, inserting rods are fixedly installed on one sides of the two installing rings, and the inserting rods are in sliding connection with the inserting grooves. The protective sleeve arranged on the shaft core body can protect the shaft core body and enhance the wear resistance of the shaft core body, the whole shaft core body can be protected through the connection between the mounting rings on the two sides and the protective sleeve, and the nut in the mounting groove can prevent the shaft core body from being damaged. The shaft core body is fixedly mounted in the protective sleeve and the two mounting rings, the structure is a detachable structure, subsequent replacement of the protective sleeve is facilitated, and the service life and wear resistance of the shaft core body are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of printer shaft cores, in particular to a printer shaft core with good wear resistance. Background Art

[0002] The printer shaft core is an important component in the printer, mainly playing the role of transmission, support and positioning. Different types of printers have different shaft core materials, sizes and uses. In the printer, the shaft core is usually used to connect and transmit various parts of the printer, such as the print head, paper feeding system, etc., to ensure the normal operation of the printer. In inkjet printers and laser printers, the shaft core usually plays a positioning role to determine the location of the printed content. In dot matrix printers, the shaft core mainly plays a transmission role. Through the rotation of the shaft core, the print pin is driven up and down to form the printed content on the paper.

[0003] The existing Chinese patent with announcement number CN216708815U discloses a shaft core for a printer that is easy to inject oil, including a shaft core body, a second mounting shaft and a mounting shaft, one end of the shaft core body is mounted with a first mounting shaft, the other end of the shaft core body is mounted with a second mounting shaft, an oil inlet is provided at the top of the second mounting shaft, a fixed shaft is installed at the top of the second mounting shaft, a sealing cover is movably installed on the outside of the fixed shaft, and a connecting shaft is installed at one end of the fixed shaft. The utility model provides an oil inlet at the top of the second mounting shaft, so that the lubricating oil is discharged from the oil outlet through the connecting groove, thereby lubricating the rotating connecting shaft, making the connecting shaft smoother when rotating, and will not produce abnormal noise or jamming. At the same time, a sealing cover is installed at the top of the second mounting shaft through the mounting shaft, and when oil injection is not required, the sealing cover is rotated to seal.

[0004] However, the above device has the following disadvantages: the printer shaft core is the core component of the printer and is also a component that is prone to wear. The above printer shaft core is not provided with a wear-resistant structure, which causes the shaft core to wear after the printer is used for a long time. After the shaft core is worn, it needs to be replaced before it can be continued to be used to ensure the printing quality of the printer. However, the cost of the shaft core is high, and the maintenance cost is also correspondingly high, so the service life and practicality of the above shaft core are not good.

[0005] Therefore, it is necessary to provide a printer shaft core with good wear resistance to solve the above technical problems. Utility Model Content

[0006] The utility model aims to provide a printer shaft core with good wear resistance, which adopts a protective sleeve and a mounting ring to increase the wear resistance and service life of the shaft core.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: a printer shaft core with good wear resistance, comprising a shaft core body and a shaft core roller, the shaft core roller is fixedly installed at both ends of the shaft core body, a protective sleeve is slidably installed on the shaft core body, and mounting rings are slidably installed on the two shaft core rollers, slots are provided on the side walls at both ends of the protective sleeves, and a plug rod is fixedly installed on one side of the two mounting rings, and the plug rod is slidably connected to the slot, and limiting strips are fixedly installed on the top and bottom ends of the shaft core body, and limiting grooves are provided on the inner walls of the top and bottom ends of the protective sleeve, and the limiting grooves are slidably connected to the limiting strips, and the side walls of the mounting rings are provided with mounting grooves, and nuts are rotatably connected inside the mounting grooves, and the nuts are threadedly connected to the shaft core rollers.

[0008] By adopting the above technical scheme, the protective sleeve arranged on the shaft core body can increase the protection of the shaft core body and enhance its wear resistance, and through the connection between the mounting rings on both sides and the protective sleeve, the overall protection of the shaft core body can be achieved. The nut inside the mounting groove realizes the fixed installation of the shaft core body inside the protective sleeve and the two mounting rings. This structure is a detachable structure, which is convenient for the subsequent replacement of the protective sleeve, thereby ensuring the service life and wear resistance of the shaft core body.

[0009] The utility model is further configured as follows: a plurality of anti-slip grooves are provided on the side wall of the nut.

[0010] By adopting the above technical solution, the provision of the anti-slip pattern can increase the friction between the hand and the nut, facilitate the disassembly of the nut, and increase the practical performance of the device.

[0011] The utility model is further configured as follows: sealing grooves are provided at both ends of the protective sleeve, sealing rings are fixedly installed at one end of the two mounting rings, the sealing grooves and the sealing rings are adapted to each other, sealing rings are fixedly installed inside the mounting rings, and the sealing rings are arranged between the mounting rings and the shaft core roller.

[0012] By adopting the above technical solution, the setting of the sealing ring can increase the sealing between the mounting ring and the protective sleeve, and the sealing ring can increase the sealing between the mounting ring and the shaft core roller, preventing dust from entering the interior through the gap between the mounting ring and the shaft core roller, thereby increasing the dustproof performance of the device.

[0013] The utility model is further configured as follows: a magnetic attraction layer is provided at one end of each of the plurality of insertion rods, and the magnetic attraction layer is magnetically connected to the slot.

[0014] By adopting the above technical solution, the provision of the magnetic attraction layer can increase the stability between the insertion rod and the slot, thereby increasing the stability of the device.

[0015] The utility model is further configured as follows: the side walls of the protective sleeve are respectively provided with a wear-resistant coating and a heat dissipation coating, the wear-resistant coating is arranged on the side walls of the protective sleeve, and the heat dissipation coating is arranged outside the wear-resistant coating.

[0016] By adopting the above technical solution, the shaft core body generates heat during use, and the heat dissipation coating can increase the heat dissipation performance. The wear-resistant coating and the heat dissipation coating are both existing technologies, and their function is to enhance the heat dissipation performance and wear resistance of the article, so they are not described in detail. The setting of the above structure increases the heat dissipation performance and wear resistance of the device.

[0017] The utility model is further configured as follows: waterproof cotton is slidably mounted on the side wall of the shaft core roller, and a spring is arranged between the waterproof cotton and the inner wall of the mounting ring.

[0018] By adopting the above technical solution, since the shaft core body is made of metal, the provision of waterproof cotton can prevent the shaft core body from being corroded after being exposed to moisture, thereby increasing the corrosion resistance and service life of the shaft core body.

[0019] To sum up, the utility model has the following beneficial effects: the protective sleeve arranged on the shaft core body can increase the protection of the shaft core body and enhance its wear resistance, and through the connection between the mounting rings on both sides and the protective sleeves, the overall protection of the shaft core body can be achieved, and the nut inside the mounting groove realizes the fixed installation of the shaft core body inside the protective sleeve and the two mounting rings. The structure is a detachable structure, which is convenient for the subsequent replacement of the protective sleeve, and ensures the service life and wear resistance of the shaft core body. The setting of the sealing ring can increase the sealing between the mounting ring and the protective sleeve, and the sealing ring can increase the sealing between the mounting ring and the shaft core roller, preventing dust from entering the interior through the gap between the mounting ring and the shaft core roller, thereby increasing the dustproof performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the three-dimensional explosion structure of the utility model;

[0022] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the nut and the mounting ring of the utility model;

[0024] Figure 5 A schematic diagram of the three-dimensional structure of the nut and the mounting ring of the utility model from another perspective;

[0025] Figure 6It is a three-dimensional structural schematic diagram of the limiting groove and the limiting strip of the utility model;

[0026] Figure 7 This is a schematic cross-sectional structure diagram of a magnetic attraction layer provided at the end of the plug rod of the utility model;

[0027] Figure 8 It is a schematic cross-sectional structure diagram of a protective sleeve of the utility model provided with a heat dissipation coating and a wear-resistant coating.

[0028] In the figure: 1. shaft core body; 2. shaft core roller; 3. protective sleeve; 4. mounting ring; 5. nut; 6. anti-slip groove; 7. mounting groove; 8. sealing ring; 9. sealing groove; 10. slot; 11. insertion rod; 12. limit groove; 13. limit strip; 14. spring; 15. waterproof cotton; 16. wear-resistant coating; 17. heat dissipation coating; 18. magnetic attraction layer; 19. sealing ring. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] See also Figures 1 to 8 In an embodiment of the utility model, a printer shaft core with good wear resistance includes a shaft core body 1 and a shaft core roller 2, the shaft core roller 2 is fixedly installed at both ends of the shaft core body 1, a protective sleeve 3 is slidably installed on the shaft core body 1, and a mounting ring 4 is slidably installed on the two shaft core rollers 2, and a slot 10 is opened on the side walls at both ends of the protective sleeve 3, and a plug rod 11 is fixedly installed on one side of the two mounting rings 4, and the plug rod 11 is slidably connected to the slot 10, and a limit strip 13 is fixedly installed on the top and bottom ends of the shaft core body 1, and a limit groove 12 is opened on the inner wall of the top and bottom ends of the protective sleeve 3, and the limit groove 12 and the limit groove 12 are connected to the limit groove 10. The positioning strip 13 is slidably connected, and the side wall of the mounting ring 4 is provided with a mounting groove 7, and a nut 5 is rotatably connected inside the mounting groove 7, and the nut 5 is threadedly connected to the shaft core roller 2; the protective sleeve 3 arranged on the shaft core body 1 can increase the protection of the shaft core body 1 and enhance its wear resistance, and through the connection between the mounting rings 4 and the protective sleeve 3 on both sides, the overall protection of the shaft core body 1 can be achieved, and the nut 5 inside the mounting groove 7 realizes the fixed installation of the shaft core body 1 inside the protective sleeve 3 and the two mounting rings 4. This structure is a detachable structure, which is convenient for the subsequent replacement of the protective sleeve 3 and ensures the service life and wear resistance of the shaft core body 1.

[0031] In the present embodiment, preferably, a plurality of anti-slip grooves 6 are provided on the side wall of the nut 5; the provision of the anti-slip grooves 6 can increase the friction between the hand and the nut 5, facilitate the disassembly of the nut 5, and increase the practical performance of the device.

[0032] In this embodiment, preferably, sealing grooves 9 are provided at both ends of the protective sleeve 3, and sealing rings 8 are fixedly installed at one end of the two mounting rings 4, the sealing grooves 9 and the sealing rings 8 are adapted to each other, and a sealing ring 19 is fixedly installed inside the mounting ring 4, and the sealing ring 19 is arranged between the mounting ring 4 and the shaft core roller 2; the arrangement of the sealing ring 8 can increase the sealing between the mounting ring 4 and the protective sleeve 3, and the sealing ring 19 can increase the sealing between the mounting ring 4 and the shaft core roller 2, preventing dust from entering the interior through the gap between the mounting ring 4 and the shaft core roller 2, thereby increasing the dustproof performance of the device.

[0033] In this embodiment, preferably, a magnetic attraction layer 18 is provided at one end of each of the plurality of the insertion rods 11, and the magnetic attraction layer 18 is magnetically connected to the slot 10; the provision of the magnetic attraction layer 18 can increase the stability between the insertion rod 11 and the slot 10, thereby increasing the stability of the device.

[0034] In this embodiment, preferably, the side walls of the protective sleeve 3 are respectively provided with a wear-resistant coating 16 and a heat dissipation coating 17, the wear-resistant coating 16 is arranged on the side walls of the protective sleeve 3, and the heat dissipation coating 17 is arranged outside the wear-resistant coating 16; the shaft core body 1 generates heat during use, and the heat dissipation coating 17 can increase the heat dissipation performance. The wear-resistant coating 16 and the heat dissipation coating 17 are both prior arts, and their function is to enhance the heat dissipation performance and wear resistance of the article, so they are not described in detail. The arrangement of the above structure increases the heat dissipation performance and wear resistance of the device.

[0035] In this embodiment, preferably, a waterproof cotton 15 is slidably installed on the side wall of the shaft core roller 2, and a spring 14 is arranged between the waterproof cotton 15 and the inner wall of the mounting ring 4; since the shaft core body 1 is a metal product, the arrangement of the waterproof cotton 15 can prevent the shaft core body 1 from being corroded after being exposed to moisture, thereby increasing the corrosion resistance and service life of the shaft core body 1.

[0036] Working principle: The protective sleeve 3 arranged on the shaft core body 1 can increase the protection of the shaft core body 1 and enhance its wear resistance, and through the connection between the mounting rings 4 on both sides and the protective sleeve 3, the overall protection of the shaft core body 1 can be achieved. The nut 5 inside the mounting groove 7 realizes the fixed installation of the shaft core body 1 inside the protective sleeve 3 and the two mounting rings 4. This structure is a detachable structure, which is convenient for the subsequent replacement of the protective sleeve 3, and ensures the service life and wear resistance of the shaft core body 1. The setting of the sealing ring 8 can increase the sealing between the mounting ring 4 and the protective sleeve 3. The sealing ring 19 can increase the sealing between the mounting ring 4 and the shaft core roller 2, prevent dust from entering the interior through the gap between the mounting ring 4 and the shaft core roller 2, and increase the dustproof performance of the device.

[0037] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A printer shaft core with good wear resistance, comprising a shaft core body (1) and a shaft core roller (2), characterized in that: The shaft core roller (2) is fixedly mounted on both ends of the shaft core body (1), a protective sleeve (3) is slidably mounted on the shaft core body (1), and mounting rings (4) are slidably mounted on the two shaft core rollers (2). The side walls at both ends of the protective sleeve (3) are provided with slots (10), and one side of the two mounting rings (4) is fixedly mounted with an insertion rod (11), and the insertion rod (11) is slidably connected to the slot (10). The top and bottom ends of the shaft core body (1) are fixedly mounted with a limit strip (13), and the inner walls of the top and bottom ends of the protective sleeve (3) are provided with a limit groove (12), and the limit groove (12) is slidably connected to the limit strip (13). The side wall of the mounting ring (4) is provided with a mounting groove (7), and a nut (5) is rotatably connected inside the mounting groove (7), and the nut (5) is threadedly connected to the shaft core roller (2).

2. A printer shaft core with good wear resistance according to claim 1, characterized in that: The side wall of the nut (5) is provided with a plurality of anti-slip grooves (6).

3. A printer shaft core with good wear resistance according to claim 1, characterized in that: Both ends of the protective sleeve (3) are provided with sealing grooves (9), one end of each of the two mounting rings (4) is fixedly mounted with a sealing ring (8), the sealing groove (9) and the sealing ring (8) are adapted to each other, a sealing ring (19) is fixedly mounted inside the mounting ring (4), and the sealing ring (19) is arranged between the mounting ring (4) and the shaft core roller (2).

4. A printer shaft core with good wear resistance according to claim 1, characterized in that: A magnetic attraction layer (18) is provided at one end of each of the plurality of insertion rods (11), and the magnetic attraction layer (18) is magnetically connected to the slot (10).

5. A printer shaft core with good wear resistance according to claim 1, characterized in that: The side walls of the protective sleeve (3) are respectively provided with a wear-resistant coating (16) and a heat dissipation coating (17); the wear-resistant coating (16) is provided on the side walls of the protective sleeve (3), and the heat dissipation coating (17) is provided outside the wear-resistant coating (16).

6. A printer shaft core with good wear resistance according to claim 1, characterized in that: A waterproof cotton (15) is slidably mounted on the side wall of the shaft core roller (2), and a spring (14) is arranged between the waterproof cotton (15) and the inner wall of the mounting ring (4).

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