Developing roller for printer

Abstract

The utility model discloses a developing roller for a printer, and relates to the technical field of printer accessories, the developing roller for the printer comprises a main shaft rod, the outer side of the middle part of the main shaft rod is fixedly sleeved with a shaft inner sleeve, the outer side of the shaft inner sleeve is fixedly provided with a developing shaft main body, and one side of the main shaft rod is welded with a rotating assembly; a cleaning structure is arranged, adsorption cotton is arranged on the outer side of the middle of the cleaning structure through a mounting sleeve, in daily use, overflowed ink can be adsorbed by the adsorption cotton after passing through the adsorption cotton, and the ink cannot be adsorbed by the adsorption cotton after passing through the cleaning structure. Therefore, ink is effectively prevented from overflowing to the connecting position from the side edge of the developing shaft main body, the situation that rotation of the main shaft rod is affected after the ink is dried up and caked is avoided, when cleaning is needed, due to the fact that the mounting sleeve and the adsorption cotton have elasticity, the mounting sleeve can be stretched and taken down to be cleaned or replaced, and the effect of adsorbing the ink for a long time is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of printer accessories, and in particular to a developing roller for a printer. Background Art

[0002] The developing roller is an important component of the printer. When working, the developing roller absorbs ink through the electric charge on its surface, and then transfers the ink to the paper to form a specific image. After that, the paper must pass through the hot pressing roller when it is output, so that the resin component in the toner dissolves rapidly at high temperature, thereby firmly adhering the ink to the surface of the paper and completing the entire printing process.

[0003] Existing developing rollers are generally formed by injection molding, which makes the overall surface smoother and the transferred image clearer. However, due to the ink adsorbed on the developing roller, it will remain on the surface of the developing roller after the machine stops. After starting, due to the rearrangement of the charge, some ink will overflow to both sides of the developing roller. When the ink dries, it will remain at the connection position on both sides of the developing roller, affecting the rotation of the developing roller and making it difficult to clean. Utility Model Content

[0004] The purpose of this application is to solve the problems raised in the above background technology. This application provides a developing roller for a printer.

[0005] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0006] A developing roller for a printer comprises a main shaft rod, an inner sleeve of the shaft is fixedly sleeved on the outer side of the middle part of the main shaft rod, a developing shaft body is fixed on the outer side of the inner sleeve of the shaft, a rotating assembly is welded on one side of the main shaft rod, a clamping shaft rod is welded on the other side of the main shaft rod, side shaft bodies are provided on both sides of the inner sleeve of the shaft, a cleaning structure is provided on the middle part of the outer side of the side shaft body, a limiting structure is provided on the side of the side shaft body away from the inner sleeve of the shaft, and a fixing thread is provided on the outer wall of the main shaft rod.

[0007] By adopting the above technical solution, the cleaning structure can absorb overflowed ink during daily use to prevent the ink from overflowing to the side connection position and solidifying to affect the daily use of the developing shaft body. After using it for a period of time, the operator can remove the cleaning structure for cleaning.

[0008] Furthermore, the rotating assembly includes a fixed shaft rod welded on one side of the main shaft rod, and a pair of clip-on grooves are symmetrically opened on the side of the fixed shaft rod, and the clip-on grooves are trapezoidal slots. A connecting gear is mounted on the outer side of the fixed shaft rod, and a limiting tooth corresponding to the shape of the clip-on groove is fixedly welded on the inner side wall of the connecting gear.

[0009] By adopting the above technical solution, the connecting gear is arranged on the outside of the fixed shaft, and a limiting tooth is provided on the inside of the connecting gear to be clamped in the clamping groove position on the outside of the fixed shaft, so that when the connecting gear rotates, the connecting gear will drive the fixed shaft to rotate together.

[0010] Furthermore, the cleaning structure includes a mounting sleeve that is sleeved on the outside of the side shaft body, the surface of the mounting sleeve is adhered with adsorption cotton, the mounting sleeve is a rubber material component, the mounting sleeve is a stepped annular structure, and the side of the side shaft body is provided with a stepped annular groove corresponding to the mounting sleeve.

[0011] By adopting the above technical solution, the mounting sleeve has an elastic structure and can be mounted in the stepped annular groove on the outside of the side shaft body. The adsorption cotton on the upper side of the mounting sleeve can absorb the overflowed ink.

[0012] Furthermore, four limiting holes are equidistantly provided on the left and right sides of the shaft inner sleeve, and four limiting columns corresponding to the limiting holes are welded on the side of the side shaft body close to the shaft inner sleeve.

[0013] By adopting the above technical solution, the limiting column is inserted into the limiting hole, so that the shaft inner sleeve and the side shaft body can rotate synchronously.

[0014] Furthermore, a trapezoidal groove is provided on the inner wall of the side shaft body away from the inner sleeve of the side shaft, and a circular through groove corresponding to the main shaft rod is provided in the middle of the side shaft body.

[0015] By adopting the above technical solution, the side shaft body is sleeved on the outside of the main shaft rod, which can be easily disassembled and cleaned.

[0016] Furthermore, the limiting structure is snap-fitted and nested into a trapezoidal groove provided on the side of the side shaft body.

[0017] By adopting the above technical solution, the overall side of the side shaft body remains flat and beautiful.

[0018] Furthermore, the limiting structure includes a metal ring sleeved on the outside of the main shaft, the metal ring is located on a side away from the side shaft body and is fixedly clamped with a rubber ring, and a thread groove corresponding to the fixed thread is opened inside the metal ring.

[0019] By adopting the above technical solution, the metal ring can be installed through the fixing thread.

[0020] In summary, this application has the following beneficial effects:

[0021] The present application is provided with a cleaning structure, and adsorption cotton is provided on the outer middle part of the cleaning structure through a mounting sleeve. During daily use, the overflowed ink will be adsorbed by the adsorption cotton after passing through the adsorption cotton position, thereby effectively preventing the ink from overflowing from the side of the developing shaft body to the connection position, and preventing the ink from drying and agglomerating and affecting the rotation of the main shaft rod. When cleaning is required, since the mounting sleeve and the adsorption cotton themselves are elastic, the mounting sleeve can be stretched and removed for cleaning or replacement, thereby achieving the effect of long-term adsorption of ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of this application;

[0023] Figure 2 This is a split diagram of the fixed shaft position in this application;

[0024] Figure 3 It is a schematic diagram of the side shaft structure in this application;

[0025] Figure 4 It is a cross-sectional view of the side shaft structure in this application.

[0026] Description of reference numerals:

[0027] 1. Snap-fit ​​shaft; 2. Main shaft; 3. Developing shaft body; 4. Adsorption cotton; 5. Side shaft; 6. Connecting gear; 7. Fixed shaft; 8. Snap-fit ​​groove; 9. Limiting hole; 10. Fixed thread; 11. Limiting tooth; 12. Trapezoidal groove; 13. Rubber ring; 14. Limiting column; 15. Metal ring; 16. Mounting sleeve; 17. Shaft inner sleeve. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-4 This application is described in further detail.

[0029] An embodiment of the present application discloses a developing roller for a printer.

[0030] Reference Figure 1 and Figure 2, a developing roller for a printer, comprising a main shaft rod 2, a shaft inner sleeve 17 is fixedly sleeved on the outer side of the middle part of the main shaft rod 2, and the shaft inner sleeve 17 is a metal structure that can provide certain support to the outer developing shaft main body 3, and the developing shaft main body 3 is fixed on the outer side of the shaft inner sleeve 17. The developing shaft main body 3 is formed by injection molding, and the injection molding process can keep the outer side of the developing shaft main body 3 flat as a whole, thereby achieving better transfer effect. A rotating assembly is welded on one side of the main shaft rod 2, and a card-mounting shaft rod 1 is welded on the other side of the main shaft rod 2. Flat grooves are provided on the upper and lower sides of the card-mounting shaft rod 1, which can be conveniently connected to other components by carding. Side shaft bodies 5 are provided on both sides of the shaft inner sleeve 17, and a cleaning structure is provided on the middle part of the outer side of the side shaft body 5. A limiting structure is provided on the side of the side shaft body 5 away from the shaft inner sleeve 17, and a fixing thread 10 is provided on the outer wall of the main shaft rod 2.

[0031] During daily use, the cleaning structure can absorb overflowed ink to prevent the ink from overflowing to the side connection position and solidifying to affect the daily use of the developing shaft body 3. After using it for a period of time, the operator can remove the cleaning structure for cleaning.

[0032] Reference Figure 2 The rotating assembly includes a fixed shaft rod 7 welded on one side of the main shaft rod 2. A pair of card slots 8 are symmetrically opened on the side of the fixed shaft rod 7. The card slots 8 are trapezoidal slots. The outer side of the fixed shaft rod 7 is sleeved with a connecting gear 6. The inner side wall of the connecting gear 6 is fixedly welded with a limiting tooth 11 corresponding to the shape of the card slot 8. The operator slides the limiting tooth 11 to align with the card slot 8, and can insert the connecting gear 6 into the fixed shaft rod 7 horizontally, and the connecting gear 6 will rotate synchronously with the fixed shaft rod 7.

[0033] The connecting gear 6 is arranged on the outside of the fixed shaft 7, and a limiting tooth 11 is provided on the inside of the connecting gear 6 to be clamped in the clamping groove 8 on the outside of the fixed shaft 7, so that when the connecting gear 6 rotates, the connecting gear 6 will drive the fixed shaft 7 to rotate together.

[0034] Reference Figure 3 and Figure 4 The cleaning structure includes a mounting sleeve 16 that fits over the outside of the side shaft 5. Adsorbent cotton 4 is adhered to the surface of the mounting sleeve 16. The mounting sleeve 16 is made of rubber and has a stepped annular structure. The side of the side shaft 5 is provided with a stepped annular groove corresponding to the mounting sleeve 16. The entire cleaning structure can be disassembled for cleaning. The mounting sleeve 16 is an elastic structure that fits into the stepped annular groove on the outside of the side shaft 5. The adsorbent cotton 4 on the upper side of the mounting sleeve 16 absorbs spilled ink.

[0035] Reference Figure 2Four limiting holes 9 are equidistantly provided on the left and right sides of the inner sleeve 17. Four limiting posts 14 corresponding to the limiting holes 9 are welded on the side of the side shaft body 5 close to the inner sleeve 17 to facilitate plug-in connection. The limiting posts 14 are inserted into the limiting holes 9 to enable the inner sleeve 17 and the side shaft body 5 to rotate synchronously.

[0036] Reference Figure 3 The inner wall of the side shaft body 5 away from the side shaft inner sleeve 17 is provided with a trapezoidal groove 12, and the middle part of the side shaft body 5 is provided with a circular through groove corresponding to the main shaft rod 2. The side shaft body 5 is sleeved on the outside of the main shaft rod 2, which can be easily disassembled and cleaned.

[0037] Reference Figure 2 and Figure 3 The limiting structure is inserted into the trapezoidal groove 12 provided on the side of the side shaft body 5. By adopting the above technical solution, the side of the side shaft body 5 can still remain flat and beautiful after being connected with the limiting structure.

[0038] Reference Figure 2 and Figure 3 The limiting structure includes a metal ring 15 sleeved on the outside of the main shaft 2. The metal ring 15 is located on the side away from the side shaft body 5 and is fixed with a rubber ring 13. The rubber ring 13 can increase the contact friction with the main shaft 2 and reduce the displacement and loosening of the limiting structure due to vibration of the main shaft 2 during use. A thread groove corresponding to the fixed thread 10 is opened inside the metal ring 15, and the metal ring 15 is fixedly installed through the fixed thread 10.

[0039] Working principle: When in use, the developing shaft main body 3 electrostatically absorbs the ink to perform the normal printing process. When the ink overflows to the side of the developing shaft main body 3, the ink passes through the adsorption cotton 4 of the cleaning structure and will be adsorbed and retained by the adsorption cotton 4, thereby effectively preventing the ink from overflowing to the connecting gear 6 structure on the side of the main shaft rod 2, and avoiding the ink drying and agglomerating to affect the normal rotation of the connecting gear 6 and the fixed shaft rod 7. After using for a period of time, the cleaning structure needs to be cleaned and maintained. The operator can remove the connecting gear 6 horizontally, and then use a tool to press the inner side of the metal ring 15 of the limiting structure to set the thread on the fixed thread 10 The metal ring 15 is rotated and removed, and then the side shaft body 5 can be separated from the shaft inner sleeve 17 laterally. Since the adsorption cotton 4 is arranged on the outside of the mounting sleeve 16, and the mounting sleeve 16 is a rubber component with a certain elasticity, the entire mounting sleeve 16 together with the adsorption cotton 4 can be lifted up and removed by force, so as to clean or replace the cleaning structure as a whole. When the cleaning is completed, the cleaned cleaning structure is installed on the side shaft body 5, and some of the limiting columns 14 on the side shaft body 5 are aligned with the limiting holes 9 on the side of the shaft inner sleeve 17, and the side shaft body 5 is laterally mounted on the main shaft rod 2, and then the limiting structure is tightened to complete the reset of the device.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A developing roller for a printer, comprising a main shaft (2), characterized in that: The central outer side of the main shaft rod (2) is fixedly sleeved with a shaft inner sleeve (17), the outer side of the shaft inner sleeve (17) is fixed with a developing shaft body (3), a rotating assembly is welded on one side of the main shaft rod (2), and a clamping shaft rod (1) is welded on the other side of the main shaft rod (2), side shaft bodies (5) are provided on both sides of the shaft inner sleeve (17), a cleaning structure is provided on the middle part of the outer side of the side shaft body (5), a limiting structure is provided on the side of the side shaft body (5) away from the shaft inner sleeve (17), and a fixing thread (10) is provided on the outer wall of the main shaft rod (2).

2. A developing roller for a printer according to claim 1, characterized in that: The rotating assembly includes a fixed shaft (7) welded to one side of the main shaft (2), a pair of clamping grooves (8) are symmetrically opened on the side of the fixed shaft (7), and the clamping grooves (8) are slots with a trapezoidal structure. A connecting gear (6) is sleeved on the outer side of the fixed shaft (7), and a limiting tooth (11) corresponding to the shape of the clamping groove (8) is fixedly welded on the inner side wall of the connecting gear (6).

3. The developing roller for a printer according to claim 1, wherein: The cleaning structure comprises a mounting sleeve (16) sleeved on the outside of the side shaft body (5), adsorption cotton (4) is adhered to the surface of the mounting sleeve (16), the mounting sleeve (16) is a rubber material component, the mounting sleeve (16) is a stepped annular structure, and the side of the side shaft body (5) is provided with a stepped annular groove corresponding to the mounting sleeve (16).

4. The developing roller for a printer according to claim 1, wherein: Four limiting holes (9) are equidistantly provided on the left and right sides of the shaft inner sleeve (17), and four limiting columns (14) corresponding to the limiting holes (9) are welded on one side of the side shaft body (5) close to the shaft inner sleeve (17).

5. The developing roller for a printer according to claim 1, wherein: A trapezoidal groove (12) is provided on the inner wall of the side shaft body (5) away from the side shaft inner sleeve (17), and a circular through groove corresponding to the main shaft rod (2) is provided in the middle of the side shaft body (5).

6. The developing roller for a printer according to claim 1, wherein: The limiting structure is snap-fitted and nested in a trapezoidal groove (12) provided on the side of the side shaft body (5).

7. The developing roller for a printer according to claim 1, characterized in that: The limiting structure comprises a metal ring (15) sleeved on the outside of the main shaft (2), the metal ring (15) being located on a side away from the side shaft body (5) and fixedly clamped with a rubber ring (13), and a thread groove corresponding to the fixed thread (10) is provided inside the metal ring (15).

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