A high-precision developing roller

Abstract

This utility model relates to the field of developing rollers, and more particularly to a high-precision developing roller. It includes a connecting roller and a connecting structure. The connecting roller has a connecting sleeve on its arc-shaped surface. The connecting sleeve is connected to the connecting roller via the connecting structure, and the connecting sleeve is slidably connected to the connecting roller. The connecting structure on the arc-shaped surface of the connecting roller includes two connecting rings, both of which are slidably connected to the connecting roller. This utility model provides a high-precision developing roller that allows for convenient and rapid replacement of the developing roller connecting sleeve, effectively avoiding the need to replace the entire developing roller due to aging of the connecting sleeve. By replacing the connecting sleeve separately, unnecessary component replacements are reduced, significantly lowering the maintenance cost of the developing roller. This optimization not only improves maintenance efficiency but also extends the service life of the developing roller and other related components, thereby reducing overall operating costs.

Description

Technical Field

[0001] This utility model relates to the field of developing rollers, and in particular to a high-precision developing roller. Background Technology

[0002] The developing roller is one of the essential components of a printer or copier, primarily used to evenly transfer the developing powder from the developer solution onto the printing media. It plays a crucial role throughout the printing or copying process, helping to form images or text.

[0003] Existing technologies, such as the utility model with publication number CN219179777U, disclose a developing roller and a developing cartridge. This patent includes a rotating shaft and an elastic sleeve disposed on the rotating shaft. The rotating shaft is a metal shaft with an integrally formed structure, comprising a core shaft and a circular sheath. The circular sheath is disposed at opposite ends of the elastic sleeve, and the outer diameter of the circular sheath is less than or equal to the outer diameter of the elastic sleeve. The developing cartridge of this embodiment includes a cartridge body, a drive assembly, and the aforementioned developing roller. The developing roller is rotatably supported at opposite ends of the cartridge body. The drive assembly includes a developing roller gear connected to the rotating shaft and a rotational driving force receiving component with a drive gear, the developing roller gear meshing with the drive gear. In this utility model, the developing roller rotating shaft uses a metal shaft with an integrally formed structure. The circular sheath of this metal shaft can more precisely control the contact force / compression amount when the elastic sleeve contacts the photosensitive drum, improving image quality.

[0004] The inventors discovered during use that the silicone sleeve in existing technologies is affected by various factors during use, including prolonged friction, high temperature, and high pressure. These factors may cause aging, deformation, or cracks on the surface of the silicone sleeve, thereby affecting the function of the developing roller and print quality. In existing technologies, most developing roller designs do not consider the possibility of replacing the silicone sleeve separately, usually requiring the entire developing roller assembly to be disassembled and replaced, leading to complexity in cleaning and maintenance. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies.

[0006] To solve the above-mentioned technical problems, this utility model provides a high-precision developing roller, including: a connecting roller and a connecting structure. The connecting roller has a connecting sleeve on its arc surface. The connecting sleeve is connected to the connecting roller via the connecting structure. The connecting sleeve and the connecting roller are slidably connected. The connecting structure includes two connecting rings, both of which are slidably connected to the connecting roller and fixedly connected to the connecting sleeve. The inner wall of the connecting sleeve has several sliding grooves. A locking block is slidably connected to the inner wall of the sliding groove. The arc surface of the connecting roller has a locking groove, which engages with the locking block. A spring is provided inside the sliding groove. The two ends of the spring are fixedly connected to the sliding groove and the locking block, respectively. A positioning block is fixedly connected to the side of the locking block near the connecting roller. The arc surface of the connecting roller has a positioning groove, which is adapted to the positioning block.

[0007] The effect achieved by the above components is as follows: when it is necessary to connect the connecting sleeve and the connecting roller, the connecting sleeve is pulled to move, the connecting sleeve drives the slide and the locking block to move, after moving to the appropriate position, the connecting roller abuts against the locking block, the locking block drives the spring to contract, the locking block slides on the inner wall of the slide, and then the locking block drives the positioning block to slide on the inner wall of the positioning groove. After moving to the appropriate position, the spring is stretched to drive the locking block to be locked into the slot for fixation.

[0008] Preferably, the positioning block has a triangular cross-section, and the width of the positioning block is the same as the width of the positioning groove.

[0009] The effect achieved by the above components is that the positioning block and positioning groove can limit the position of the locking block and prevent misalignment when installing the connecting sleeve.

[0010] Preferably, a limiting rod is fixedly connected inside the slide groove, and the limiting rod is slidably connected to the locking block.

[0011] The effect achieved by the above components is that the limiting rod can limit the movement of the locking block, preventing the locking block from shifting during use.

[0012] Preferably, the limiting rod has a circular cross-section, and the spring is sleeved on the arc surface of the limiting rod.

[0013] The effect achieved by the above components is that the limiting rod can limit the spring, prevent the spring from deforming during use, and improve the service life of the spring.

[0014] Preferably, the arc surface of the connecting ring is provided with a plurality of slots, and the plurality of slots are evenly distributed on the connecting ring.

[0015] The effect achieved by the above components is that the groove can increase the friction between the hand and the connecting ring, preventing slippage when the connecting ring is pulled.

[0016] Preferably, the lower end of the card block has a rounded edge, and the upper end of the rounded edge is higher than the edge of the card slot.

[0017] The effect achieved by the above components is that the rounded edge can prevent jamming when replacing the connecting sleeve.

[0018] Compared with related technologies, the high-precision developing roller provided by this utility model has the following beneficial effects: This invention provides a high-precision developing roller. By designing a connection structure, it enables convenient and rapid replacement of the developing roller's connecting sleeve, effectively avoiding the need to replace the entire developing roller due to sleeve aging. Replacing the connecting sleeve individually reduces unnecessary component replacements, significantly lowering the developing roller's maintenance costs. This optimization not only improves maintenance efficiency but also extends the service life of the developing roller and other related components, thereby reducing overall operating costs. Furthermore, this solution reduces equipment downtime, further improving the overall operating efficiency of the production line. Attached Figure Description

[0019] Figure 1 This utility model provides a structural schematic diagram of a high-precision developing roller; Figure 2 for Figure 1 The diagram shows the connection structure. Figure 3 for Figure 2 The diagram shows a partial structural representation. Figure 4 for Figure 3 The enlarged view of point A shown.

[0020] The following are the labels in the diagram: 1. Connecting roller; 2. Connecting sleeve; 3. Connecting structure; 301. Connecting ring; 302. Groove; 303. Slide groove; 304. Slot; 305. Positioning groove; 306. Slot; 307. Spring; 308. Limiting rod; 309. Rounded edge; 310. Positioning block. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0023] Please see Figures 1 to 4The present invention provides a high-precision developing roller, comprising: a connecting roller 1 and a connecting structure 3. The arc surface of the connecting roller 1 is provided with a connecting sleeve 2. The connecting sleeve 2 is connected to the connecting roller 1 by means of the connecting structure 3. The connecting sleeve 2 and the connecting roller 1 are slidably connected. The arc surface of the connecting roller 1 is provided with the connecting structure 3.

[0024] In the embodiments of this utility model, please refer to Figures 2 to 4 The connecting structure 3 includes two connecting rings 301, both of which are slidably connected to the connecting roller 1 and fixedly connected to the connecting sleeve 2. The inner wall of the connecting sleeve 2 is provided with several sliding grooves 303, and a locking block 306 is slidably connected to the inner wall of the sliding groove 303. The arc surface of the connecting roller 1 is provided with a locking groove 304, which is engaged with the locking block 306. A spring 307 is provided inside the sliding groove 303, and the two ends of the spring 307 are fixedly connected to the sliding groove 303 and the locking block 306 respectively. A positioning block 310 is fixedly connected to the side of the locking block 306 near the connecting roller 1. The arc surface of the connecting roller 1 is provided with a positioning groove 305, which is adapted to the positioning block 310. When it is necessary to connect the connecting sleeve 2 and the connecting roller 1, the connecting sleeve 2 is pulled to move. The connecting sleeve 2 drives the slide groove 303 and the locking block 306 to move. After moving to the appropriate position, the connecting roller 1 abuts against the locking block 306, and the locking block 306 drives the spring 307 to retract. The locking block 306 slides on the inner wall of the slide groove 303. Then, the locking block 306 drives the positioning block 310 to slide on the inner wall of the positioning groove 305. After moving to the appropriate position, the spring 307 stretches and drives the locking block 306 to be locked into the locking groove 304 for fixation. The cross-section of the positioning block 310 is triangular, and the width of the positioning block 310 is the same as the width of the positioning groove 305. The positioning block 310 and the positioning groove 305 can limit the locking block 306 to prevent misalignment when installing the connecting sleeve 2. The slide groove 303 is fixedly connected to a limit rod 308, which is slidably connected to the locking block 306. The limiting rod 308 can limit the locking block 306 to prevent it from shifting during use. The limiting rod 308 has a circular cross-section, and the spring 307 is sleeved on the arc surface of the limiting rod 308. The limiting rod 308 can also limit the spring 307 to prevent it from deforming during use, thus improving the service life of the spring 307. The arc surface of the connecting ring 301 has several slots 302 evenly distributed on it. The slots 302 can increase the friction between the hand and the connecting ring 301, preventing slippage when pulling the connecting ring 301. The lower end of the locking block 306 has an arc edge 309, the upper end of which is higher than the edge of the locking groove 304. The arc edge 309 can prevent jamming when replacing the connecting sleeve 2. The working principle of the high-precision developing roller provided by this utility model is as follows: When it is necessary to connect the connecting sleeve 2 and the connecting roller 1, the connecting sleeve 2 is pulled to move. The connecting sleeve 2 drives the sliding groove 303 and the locking block 306 to move. After moving to the appropriate position, the connecting roller 1 abuts against the locking block 306. The locking block 306 drives the spring 307 to retract. The locking block 306 slides on the inner wall of the sliding groove 303. Then, the locking block 306 drives the positioning block 310 to slide on the inner wall of the positioning groove 305. After moving to the appropriate position, the spring 307 stretches and drives the locking block 306 to lock into the locking groove 304. The positioning block 310 and positioning groove 305 can limit the locking block 306 to prevent misalignment during the installation of the connecting sleeve 2. The limiting rod 308 can limit the locking block 306 to prevent it from shifting during use. The limiting rod 308 can limit the spring 307 to prevent it from deforming during use, thus improving the service life of the spring 307. The groove 302 can increase the friction between the hand and the connecting ring 301 to prevent slippage when pulling the connecting ring 301. The rounded edge 309 can prevent jamming when replacing the connecting sleeve 2.

[0025] The circuits and controls involved in this utility model are all existing technologies and will not be described in detail here.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-precision developing roller, characterized in that, include: A connecting roller (1) and a connecting structure (3) are provided. A connecting sleeve (2) is provided on the arc surface of the connecting roller (1). The connecting sleeve (2) is connected to the connecting roller (1) by means of the connecting structure (3). The connecting sleeve (2) is slidably connected to the connecting roller (1). The arc surface of the connecting roller (1) is provided with a connecting structure (3). The connecting structure (3) includes two connecting rings (301). Both connecting rings (301) are slidably connected to the connecting roller (1). Both connecting rings (301) are fixedly connected to the connecting sleeve (2). The inner wall of the connecting sleeve (2) is provided with several sliding grooves (303). The inner wall of the slide groove (303) is slidably connected with a locking block (306). The arc surface of the connecting roller (1) is provided with a locking groove (304). The locking groove (304) is engaged with the locking block (306). A spring (307) is provided inside the slide groove (303). The two ends of the spring (307) are fixedly connected to the slide groove (303) and the locking block (306) respectively. A positioning block (310) is fixedly connected to the side of the locking block (306) near the connecting roller (1). The arc surface of the connecting roller (1) is provided with a positioning groove (305). The positioning groove (305) is adapted to the positioning block (310).

2. A high-precision developing roller according to claim 1, characterized by The positioning block (310) has a triangular cross-section, and the width of the positioning block (310) is the same as the width of the positioning groove (305).

3. A high-precision developing roller according to claim 1, characterized in that, The sliding groove (303) is internally fixedly connected to a limiting rod (308), and the limiting rod (308) is slidably connected to the locking block (306).

4. A high-precision developing roller according to claim 3, characterized in that, The limiting rod (308) has a circular cross-section, and the spring (307) is sleeved on the arc surface of the limiting rod (308).

5. A high-precision developing roller according to claim 1, characterized in that, The arc surface of the connecting ring (301) is provided with a plurality of slots (302), and the plurality of slots (302) are evenly distributed on the connecting ring (301).

6. A high-precision developing roller according to claim 1, characterized in that, The lower end of the card block (306) is provided with an arc edge (309), and the upper end of the arc edge (309) is higher than the edge of the card slot (304).

Images